VEHICLE LAMP

专利摘要:
A vehicle lamp is provided comprising a projection lens (12), a first light source (14) arranged at the rear of the projection lens (12) and configured to emit light to form a light. predetermined light distribution pattern, a reflector (15) configured to reflect light emitted by the first light source (14) towards the projection lens (12), a first matrix light source (16) arranged at the rear of the projection lens (12) and comprising a plurality of semiconductor light elements (51) aligned in at least one row, and a second matrix light source (17) arranged at the rear of the lens projection device (12) and comprising a plurality of luminescent elements (55) semiconductors aligned in at least one row. The first matrix light source (16) and the second matrix light source (17) are arranged in a high-low direction.
公开号:FR3051884A1
申请号:FR1754662
申请日:2017-05-26
公开日:2017-12-01
发明作者:Kenichi Takada；Tatsuma Kitazawa；Teruaki Yamamoto；Hiroki Kawai；Akira Hanada
申请人:Koito Manufacturing Co Ltd；
IPC主号:

专利说明:

Cross-reference to related applications [0001] The present application claims the priority benefit of Japanese Patent Applications Nos. 2016-106380, 2016-106381, 2016-106382 and 2016-106383, all filed May 27, 2016.
Technical Field [0002] Aspects of the present invention relate to a vehicle lamp.
BACKGROUND [0003] In recent years a vehicle lamp has been developed comprising a matrix light source having a plurality of semiconductor luminescent elements, such as light emitting diodes (LEDs), arranged in a row form.
JP-A-2016-039020 discloses a vehicle lamp comprising a matrix light source in a projector type optical system using a single projection lens.
However, according to the vehicle lamp disclosed in JP-A-2016-039020, the number of semiconductor luminescent elements that can be mounted on the matrix light source is limited because of the lamp space. For this reason, in some cases, a desired light distribution pattern may not be added to a predetermined light distribution scheme such as a light distribution scheme for dipped beam lights by use of the matrix light source.
[0005] It has also been developed a vehicle lamp using a multifocal projection lens.
For example, JP-A-2011-175818 suggests a vehicle lamp having a multifocal projection lens, a light source for a light distribution for low beam and a light source for a light distribution for traffic lights. road. According to this vehicle lamp, it is possible to design various patterns of light distribution by the respective light sources.
However, in accordance with the lamp disclosed in JP-A-2011-175818, as the projection lens is divided in a top-bottom direction, there is room to improve the exterior design when the lamp is watched from the front.
Also, in accordance with the lamp disclosed in JP-A-2016-039020, an additional light distribution scheme for high beam and a light distribution scheme for low beam headlamps do not partially overlap with one another. other in the vicinity of the limit of the respective light distribution patterns, so that the road surface is not sufficiently illuminated.
In addition, according to the lamp disclosed in JP-A-2016-039020, the number of semiconductor luminescent elements that can be mounted on the matrix light source is limited because of the space of the lamp. For this reason, in some cases, a light distribution pattern may not be formed by using the matrix light source, depending on the uses or situations. SUMMARY [0009] Accordingly, a first aspect of the present invention provides a vehicle lamp capable of improving the degree of design freedom of a light distribution scheme which is to be added to a predetermined light distribution pattern. while suppressing the increase in size of the lamp.
A second aspect of the present invention provides a vehicle lamp capable of improving the degree of freedom of design of a light distribution scheme while maintaining the aesthetic quality of the lamp.
A third aspect of the present invention provides a vehicle lamp capable of amplifying the lighting function of the surface of a road.
[0012] A fourth aspect of the present invention provides a vehicle lamp capable of forming various light distribution patterns while preventing an increase in the size of the lamp.
According to an illustrative embodiment, there is provided a vehicle lamp comprising: a projection lens; a first light source arranged at the rear of the projection lens and configured to emit light so as to form a predetermined light distribution pattern; a reflector configured to reflect light emitted from the first light source toward the projection lens; a first matrix light source arranged at the rear of the projection lens and comprising a plurality of semiconductor luminescent elements aligned in at least one row; and a second matrix light source arranged at the rear of the projection lens and comprising a plurality of semiconductor luminescent elements aligned in at least one row, in which the first matrix light source and the second source of matrix light are arranged in a high-low direction.
According to the above configuration, the vehicle lamp comprises the first matrix light source and the second matrix light source, and the first matrix light source and the second matrix light source are arranged. in a high-low direction. For this reason, it may be possible to mount more semiconductor luminescent elements on the lamp without increasing the width of the lamp in the left-right direction. Also, since it is possible to mount more semiconductor luminescent elements, compared to a lamp having a single matrix light source, it may be possible to improve the degree of design freedom of the light distribution scheme which must be added to a predetermined light distribution pattern, which must be formed by the light of the first light source.
In some embodiments, the projection lens may have a first rear focal point and a second rear focal point, the first matrix light source may be arranged at a position corresponding to the first rear focal point, and the second A matrix light source may be arranged at a position corresponding to the second rear focal point.
According to the configuration above, it may be possible to illuminate with the lights in front of the lamp, which must be emitted by the first matrix light source and the second matrix light source, under the shape of net light distribution patterns, while preventing an increase in size of the lamp. It may also be possible to use the light to be emitted from the first matrix light source as light to amplify the illumination function of the surface of a road, for example.
In some embodiments, the plurality of semiconductor luminescent elements of the first matrix light source may be configured to be individually turned on and off, the plurality of semiconductor luminescent elements of the second Matrix light source can be configured to be individually turned on and off, and in light distribution patterns to be projected on a vertical virtual screen in front of the lamp, a light distribution pattern that must be formed by the elements respective semiconductor luminescent light sources of the first matrix light source and a light distribution pattern to be formed by the respective semiconductor light elements of the second matrix light source can be shifted in the left-right direction of the light source. lamp.
According to the above configuration, it may be possible to increase the number of divisions in the light distribution patterns, which are configured by the first matrix light source and the second matrix light source, and to improve their definitions, so that it is possible to form various patterns of light distribution, according to the uses or situations.
In some embodiments, the second matrix light source may be configured to emit light to form at least a portion of a high beam light distribution scheme.
According to the above configuration, it may be possible to effectively use the light to be emitted from the second matrix light source, at least as part of a light distribution scheme for lights. of road.
In some embodiments. the first matrix light source may be arranged between the first rear focal point of the projection lens and the first light source in the front-rear direction of the lamp.
[0022] In accordance with the above configuration, it may be possible to illuminate with the light emitted from the first matrix light source in front of the lamp through the vicinity of the first rear focal point while preventing a increasing the size of the lamp in the front-to-back direction.
In some embodiments, the first light source may be configured to emit light to form a light distribution pattern for dipped beam, and the vehicle lamp may further comprise: a base member on which the first matrix light source and the second matrix light source are mounted; and an optical element which is a separate component of the base element and is configured to function as a screen to form a cut-off line of the light distribution pattern for low beam in a state where the optical element is mounted on the screen. basic element.
When a portion configured to function as a screen is formed at a tip end of the base member, the tip end has a predetermined thickness due to limitations of the element manufacturing conditions. basic. As the pointed end can not reflect the light forward, it becomes a cause of a dark part.
In accordance with the above configuration, since the optical element is a separate component of the base member, it may be possible to form a fine point end without being limited by the manufacturing conditions of the base member. For this reason, it may be possible to reduce the thickness of the tip end becoming a cause of a dark part, so that it is possible to remove the dark part to a level such that a driver can not not notice it.
In some embodiments, the optical element may include: a first reflective surface configured to reflect light emitted from the first matrix light source toward an incident surface of the projection lens; and a second reflective surface configured to reflect light emitted from the second matrix light source toward the incident surface of the projection lens.
According to the above configuration, it is possible to use even more efficiently the lights to be emitted from the first matrix light source and the second matrix light source.
In some embodiments, the base member may include a first surface on which the first light source is arranged and a second surface on which the first matrix light source and the second matrix light source are arranged, and the second surface may be an inclined surface which is inclined with respect to an optical axis of the projection lens so that a portion of the luminous flux of the first matrix light source arranged on the second surface is directed obliquely. in a forward and upward direction, and a portion of the luminous flux of the first matrix light source is located below the first rear focal point.
In accordance with the above configuration, it may be possible to allow the majority of the light to be emitted from the first matrix light source to pass through the first rear focal point while arranging the first source. of light in a matrix in a position avoiding a path of light so as to form a light distribution diagram for dipped beam. For this reason, it may be possible to effectively use the light of the first matrix light source.
In some embodiments, the lamp may further comprise: a rigid circuit board on which are arranged the first matrix light source and the second matrix light source, and at least a portion of the matrix light source; rigid circuit can be attached to the inclined surface.
According to the above configuration, it may be possible to easily arrange the first matrix light source and the second matrix light source at predetermined positions of the base member.
In some embodiments, the vehicle lamp may further comprise: a flexible circuit board on which are arranged the first matrix light source and the second matrix light source, and at least a portion of the Flexible circuit board can be attached to the inclined surface.
According to the above configuration, the operability can be improved following the mounting of the first matrix light source and the second matrix light source on the base member.
In some embodiments.
The center, that is, the center position, of the first matrix light source may be arranged at a position different from the center, i.e. the central position, of the second light source. in matrix in the left-right direction of the lamp.
According to the above configuration, the degree of freedom of design of light distribution patterns in the left-right direction of the lamp can be improved, so that the lighting function of the surface of a road can be amplified, for example.
According to another illustrative embodiment of the present invention, there is provided a vehicle lamp comprising: a projection lens comprising an exit surface having a convex shape based on a single circular arc; a first light source arranged at the rear of the projection lens; and a second light source arranged at the rear of the projection lens. wherein the projection lens has a first rear focal point and a second rear focal point, wherein the first light source is arranged at a position corresponding to the first rear focal point, and wherein the second light source is arranged in a position corresponding to the second rear focal point.
According to the above configuration, as the exit surface of the projection lens has a convex shape based on a single circular arc and the first light source and the second light source are arranged at the back of the projection lens, it may be possible to maintain an aesthetic quality of the external appearance, when looking at the lamp from the front. Also, since the first light source is arranged at a position corresponding to the first rear focal point and the second light source is arranged at a position corresponding to the second rear focal point, it may be possible to illuminate with the lights ahead. the lamp, which must be emitted from the first light source and the second light source, in the form of clear light distribution patterns, and improve the degree of freedom of design of the light distribution patterns.
In some embodiments, the first light source and the second light source may be arranged in a high-low direction.
According to the above configuration, it may be possible to improve the degree of freedom of design of light distribution patterns in the up-down direction of the lamp while preventing an increase in the size of the lamp in the left-right direction.
In some embodiments, the projection lens may include a first lens portion configured to form the first rear focal point and a second lens portion configured to form the second rear focal point, the first lens portion may be formed under the second lens portion, the first rear focal point may be located above the second rear focal point. the first light source can be configured to emit light towards an incident surface of the first lens portion, and the second light source can be configured to emit light to a light source. incident surface of the second lens part.
According to the above configuration, after the light to be emitted from the first light source towards the incident surface of the projection lens and the light to be emitted from the second source of light in the direction of the incident surface of the projection lens were allowed to cross each other in the up-down direction, the lights illuminate in front of the lamp from the projection lens, so that the degree of design freedom of the light distribution patterns can be improved.
In some embodiments, the first light source and the second light source may be arranged in a left-right direction.
According to the above configuration, it may be possible to improve the degree of freedom of design of light distribution patterns in the left-right direction of the lamp while preventing an increase in lamp size in the lamp. up-down direction.
In some embodiments, the projection lens may include a first lens portion configured to form the first rear focal point and a second lens portion configured to form the second rear focal point, the first lens portion may be formed on the left side with respect to the second lens portion, the first rear focal point is located on the right side with respect to the second rear focal point, the first light source can be configured to emit light towards the an incident surface of the first lens portion, and the second light source may be configured to emit light toward an incident surface of the second lens portion.
According to the above configuration, after the light to be emitted from the first light source towards the incident surface of the projection lens and the light to be emitted from the second source of light in the direction of the incident surface of the projection lens were allowed to cross each other in the left-right direction, the lights illuminate in front of the lamp from the projection lens, so that the degree of design freedom of the light distribution patterns can be improved.
In some embodiments, the projection lens may include a first lens portion configured to form the first rear focal point and a second portion configured to form the second rear focal point, and the vehicle lamp may further comprise a first reflective portion configured to reflect light emitted from the first light source toward an incident surface of the first lens portion; and a second reflecting portion configured to reflect light emitted from the second light source toward an incident surface of the second lens portion.
According to the configuration above, it may be possible to illuminate with the lights in front of the lamp, which must be emitted from the first light source and the second light source, in the form of clearer distribution patterns.
In some embodiments, the first light source may be a first matrix light source comprising a plurality of luminescent semiconductor elements aligned in at least one row, the second light source may be a second source. matrix light comprising a plurality of semiconductor luminescent elements aligned in at least one row, and the central position of the first matrix light source may be arranged at a position different from the central position of the second light source in matrix in the left-right direction of the lamp.
According to the above configuration, it may be possible to improve the degree of freedom of design of light distribution patterns in the left-right direction of the lamp.
In some embodiments, the lamp may further comprise: a base member; and a rigid circuit board on which are mounted the first matrix light source and the second matrix light source, wherein the rigid circuit board can be mounted on the base member.
According to the above configuration, it may be possible to easily arrange the first matrix light source and the second matrix light source at predetermined positions of the base member.
In some embodiments, the lamp may further comprise: a base element, and a flexible circuit board on which are arranged the first matrix light source and the second matrix light source, in which at least a portion of the flexible circuit board may be attached to the base member.
According to the above configuration, the operability can be improved following the mounting of the first matrix light source and the second matrix light source on the base member.
According to yet another illustrative embodiment, there is provided a vehicle lamp comprising: a first light source configured to emit light so as to form a light distribution pattern for low beam; a first matrix light source comprising a plurality of semiconductor luminescent elements aligned in at least one row; and a second matrix light source comprising a plurality of semiconductor luminescent elements aligned in at least one row, wherein the first matrix light source is configured to emit light to form at least a portion of the light source. an additional light distribution scheme for high beams, and wherein the second matrix light source is configured to emit light so as to form a light distribution pattern for overlapping both the light distribution pattern for dipped beam and additional light distribution scheme for high beams on a vertical virtual screen in front of the lamp.
According to the above configuration, it may be possible to increase the width over which the light emitted from the lamp must illuminate the surface of a road and illuminate with light to a position remote by the light which is to form the additional light distribution pattern, which is intended to overlap both the light distribution scheme for low beam and the additional light distribution scheme for high beam.
In some embodiments, the plurality of semiconductor luminescent elements of the first matrix light source may be configured to be individually turned on and off, the plurality of semiconductor luminescent elements of the second Matrix light source can be configured to be individually turned on and off, and in light distribution patterns to be projected on a vertical virtual screen in front of the lamp, a light distribution pattern that must be formed by the elements respective semiconductor luminescent light sources of the first matrix light source and a light distribution pattern to be formed by the respective semiconductor light elements of the second matrix light source can be shifted in the left-right direction of the light source. lamp.
According to the above configuration, the light distribution pattern to be formed by the respective semiconductor light elements of the first matrix light source, and the light distribution pattern to be formed by the elements. respective semiconductor luminescent lights of the second matrix light source, are shifted in the left-right direction of the lamp. For this reason, it may be possible to increase the number of divisions in the light distribution patterns, which are configured by the first matrix light source and the second matrix light source, and to improve their definitions, if although it may be possible to form various patterns of light distribution, depending on the uses or situations.
In certain embodiments, the center, that is to say the central position, of the first matrix light source may be arranged at a position different from the center, that is to say from the central position of the second matrix light source in the left-right direction of the lamp.
According to the above configuration, it may be possible to widen the surface area of a road in the left-right direction of the lamp, which must be illuminated by the light, and to increase the number of divisions of the light distribution patterns, which are configured by the first matrix light source and the second matrix light source.
In some embodiments, the lamp may further comprise: a projection lens, wherein the first matrix light source can be arranged at the rear of the projection lens, and in which steps of respective arrangement of the plurality of semiconductor light elements of the first matrix light source in the left-right direction of the lamp may decrease toward the rear focal point of the projection lens.
According to the above configuration, it may be possible to increase the efficiency of use of the light to be emitted from the first matrix light source while increasing the width on which the light emitted from the lamp must illuminate the surface of a road, so that it is possible to illuminate a distant position with light.
According to yet another illustrative embodiment of the present invention, there is provided a vehicle lamp comprising: a projection lens having a plurality of focal points; a first matrix light source arranged at the rear of the projection lens and comprising a plurality of semiconductor luminescent elements aligned in at least one row; and a second matrix light source arranged at the rear of the projection lens and comprising a plurality of semiconductor luminescent elements aligned in at least one row, wherein the first matrix light source and the second source of light. The matrix lumens are arranged in a high-low direction, in which the plurality of semiconductor light elements of the first matrix light source are configured to be individually turned on and off, wherein the plurality of semiconductor light elements are provided. conductors of the second matrix light source are configured to be individually switched on and off, in which, in the light distribution patterns to be projected on a vertical virtual screen in front of the lamp, a light distribution pattern to be formed by the respective semiconductor light elements of the first source of The matrix light and a light distribution pattern to be formed by the respective semiconductor light elements of the second matrix light source are shifted in the left-right direction of the lamp.
According to the above configuration, the vehicle lamp comprises the first matrix light source and the second matrix light source, and the first matrix light source and the second matrix light source are arranged. in the up-down direction. For this reason, it is possible to mount more semiconductor luminescent elements on the lamp without increasing the width of the lamp in the left-right direction. Also, the light distribution pattern to be formed by the respective semiconductor glow elements of the first matrix light source, and the light distribution pattern to be formed by the respective semiconductor glow elements of the second source. of light in matrix, are shifted in the left-right direction of the lamp. For this reason, it may be possible to increase the number of divisions in the light distribution patterns, which are configured by the first matrix light source and the second matrix light source, and to improve their definitions, if although it may be possible to form various patterns of light distribution, depending on the uses or situations.
In some embodiments, the projection lens may have a first rear focal point and a second rear focal point, the first matrix light source may be arranged at a position corresponding to the first rear focal point, and the second A matrix light source may be arranged at a position corresponding to the second rear focal point.
According to the configuration above, it may be possible to illuminate with the lights in front of the lamp, which must be emitted from the first matrix light source and the second matrix light source. in the form of net light distribution patterns, respectively.
In some embodiments, the projection lens may include a first lens portion configured to form the first rear focal point and a second lens portion configured to form the second rear focal point, and a convex portion protruding into direction of the back of the lamp may be formed at a boundary portion between an incident surface of the first lens portion and an incident surface of the second lens portion.
According to the above configuration, as the focal surfaces to be formed by the convex portion are dispersed, the lights that must pass through the convex portion and which must illuminate in front of the lamp are diffused, so that the The boundary between a lighted area and an unlit area to be formed in front of the lamp can be blurred.
In some embodiments, the projection lens may include a first lens portion configured to form the first rear focal point and a second lens portion configured to form the second rear focal point, and the vehicle lamp may further comprising: a first reflective portion configured to reflect light emitted from the first matrix light source to an incident surface of the first lens portion; and a second reflective portion configured to reflect light emitted from the second matrix light source to an incident surface of the second lens portion.
According to the configuration above, it may be possible to illuminate with the lights in front of the lamp, which must be emitted from the first light source and the second light source, in the form of sharper distribution patterns, respectively.
In some embodiments, the lamp may further comprise: a base member on which are mounted the first matrix light source and the second matrix light source; and an optical element which is a separate component of the base member and is configured to form a first aperture through which the first matrix light source is to be exposed in front of the lamp and a second aperture through which the second A matrix light source must be exposed in front of the lamp in a state where the optical element is mounted on the base member, wherein the optical element may comprise the first reflective portion and the second reflective portion.
According to the configuration above, the optical element is mounted on the base element, so that it is possible to illuminate with the lights in front of the lamp, which must be issued from the first light source and the second light source, in the form of sharper light distribution patterns, respectively.
In some embodiments. a light output portion of each semiconductor light-emitting element of the first matrix light source may be configured to be directed to a different direction than a light-output portion of each semiconductor light-emitting element from the second matrix light source in the up-down direction of the lamp.
According to the above configuration, it may be possible to easily form the light distribution diagram by using each matrix light source, depending on the uses or situations.
In some embodiments, the lamp may further comprise: a base member; and a flexible circuit board on which are mounted the first matrix light source and the second matrix light source, wherein a light output surface of each semiconductor light element of the first matrix light source can be directed to a direction different from that of a light output surface of each semiconductor light-emitting element of the second matrix light source in the up-down direction of the lamp in a state where the flexible circuit board is mounted on the basic element.
According to the above configuration, the flexible circuit board is used, so that the stresses can be reduced when arranging each matrix light source in a predetermined posture. Therefore, the degree of design freedom of the light distribution pattern, which is configured by each matrix light source, can be improved.
In some embodiments, the lamp may further comprise: a base member; and a rigid circuit board on which are mounted the first matrix light source and the second matrix light source. wherein the rigid circuit board can be mounted on the base member.
In accordance with the above configuration, it may be possible to easily arrange the first matrix light source and the second matrix light source at predetermined positions on the base member.
In some embodiments, the projection lens may include a first lens portion configured to form the first rear focal point and a second lens portion configured to form the second rear focal point, the first lens portion may be formed under the second lens portion, the first matrix light source can be arranged above the second matrix light source, the first matrix light source can be configured to emit light in the direction of an incident surface of the first lens portion, and the second matrix light source may be configured to emit light toward an incident surface of the second lens portion.
According to the above configuration, after the light to be emitted from the first light source towards the incident surface of the projection lens and the light to be emitted from the second source of light in the direction of the incident surface of the projection lens were allowed to cross each other in the up-down direction, the lights can illuminate ahead of the lamp from the projection lens.
In certain embodiments, the center, that is to say the central position, of the first matrix light source can be arranged in a position different from the center, that is to say from the central position of the second matrix light source in the left-right direction of the lamp.
According to the above configuration, the degree of freedom of design of light distribution patterns in the left-right direction of the lamp can be improved, so that the lighting function of the surface of a road can be amplified, for example.
According to an illustrative embodiment of the present invention, it may be possible to provide a vehicle lamp capable of improving the degree of freedom of design of the light distribution scheme which must be added to the distribution diagram. predetermined brightness, while suppressing the increase in size of the lamp.
Also, in accordance with an illustrative embodiment of the present invention, it may be possible to provide a vehicle lamp capable of improving the degree of freedom of design of the light distribution patterns while maintaining the aesthetic quality. of the lamp.
Also, according to an illustrative embodiment of the present invention, it may be possible to provide a vehicle lamp capable of amplifying the lighting function of the surface of a road.
Also, according to an illustrative embodiment of the present invention, it may be possible to provide a vehicle lamp capable of forming various light distribution patterns while suppressing the increase in size of the lamp.
Brief Description of the Drawings [0085] The above and other aspects of the present invention will become more apparent and are more readily appreciated from the following description of illustrative embodiments of the present invention, taken in conjunction with the accompanying drawings, in which: Figure 1 is a schematic view of a headlight having a vehicle lamp according to an illustrative embodiment of the present invention, seen from the front; Figs. 2A-2C show a vehicle lamp according to an illustrative embodiment of the present invention, wherein Fig. 2A is a left side view, Fig. 2B is a front view, and Fig. 2C is a right side view; Fig. 3 is an exploded perspective view of the vehicle lamp according to the illustrative embodiment of the present invention; Fig. 4 is a sectional view of the vehicle lamp according to the illustrative embodiment of the present invention; Figure 5 is a perspective view of a base member on which is mounted a light source of the vehicle lamp; Figures 6A and 6B illustrate a structure having a first matrix light source, a second matrix light source and an optical element of the vehicle lamp, where Figure 6A is a front view and Figure 6B is a view. in section taken along the line AA of Figure 6A; Fig. 7 is a sectional view showing a light path of a light source for low beam headlamps of the vehicle lamp; Fig. 8 is a sectional view showing the light paths of the first matrix light source and the second matrix light source of the vehicle lamp; Fig. 9 is a schematic view showing a light distribution pattern to be formed on a vertical virtual screen arranged at the front of the lamp by the light to be illuminated from the vehicle lamp in a projective manner; Figure 10 is a schematic view showing a range of illumination in front of a vehicle by the light to be illuminated from the vehicle lamp, viewed from above; Fig. 11 is a schematic view illustrating a method of forming a light distribution pattern by a matrix light source having semiconductor luminescent elements arranged in two stages; Fig. 12 is a perspective view of a base member having a light source mounted thereon, illustrating a first modified embodiment; Fig. 13 is a perspective view of a base member having a light source mounted thereon, illustrating a second modified embodiment; Fig. 14 is a schematic plan view of a flexible circuit board, illustrating the second modified embodiment; Fig. 15 is a schematic sectional view of the vehicle lamp, illustrating a third modified embodiment; Fig. 16 is a schematic sectional view of the vehicle lamp, illustrating a fourth illustrated embodiment; Fig. 17 is a schematic sectional view of the vehicle lamp, illustrating a fifth modified embodiment; Fig. 18 is a schematic sectional view of the vehicle lamp, illustrating a sixth modified embodiment; Fig. 19 is a schematic view showing a light distribution pattern to be formed on the vertical virtual screen arranged at the front of the lamp by light to illuminate from the vehicle lamp of the sixth embodiment. modified, in a projective way; Fig. 20 is a view schematically showing the arrangement of a matrix light source and a projection lens, illustrating a seventh modified embodiment; Fig. 21 is a schematic sectional view of the vehicle lamp, illustrating an eighth modified embodiment; Fig. 22 is a schematic sectional view of the vehicle lamp, illustrating a ninth modified embodiment; Fig. 23 is a schematic sectional view of the vehicle lamp, illustrating a tenth modified embodiment; Figure 24 is a schematic view of a lighthouse, viewed from the front, illustrating an eleventh modified embodiment; and Figure 25 is a schematic sectional view of a projection lens, illustrating a twelfth modified embodiment.
DETAILED DESCRIPTION [0086] Illustrative embodiments will be described below in detail with reference to the drawings.
As shown in Figure 1, a vehicle lamp 10 of the illustrative embodiment configures a lighthouse 1 of a vehicle. The lighthouse 1 is disposed on the left and right sides of a front part of the vehicle. Furthermore, in Figure 1, only the left headlight 1 of the vehicle is shown. In the illustrative embodiment, each lighthouse 1 is a monocular beacon having a single vehicle lamp 10. The vehicle lamp 10 is disposed in a lamp body (not shown). A transparent cover 2 is mounted at the front of the lamp body. The transparent cover 2 is mounted on the lamp body to form a lamp chamber, and the vehicle lamp 10 is arranged in the lamp chamber.
As shown in FIGS. 2A to 4, the vehicle lamp 10 comprises a fixing ring 11, a projection lens 12, a lens support 13, a light source for dipped beam headlights 14, a reflector 15, a first matrix light source 16, a second matrix light source 17, an optical element 18, a base member 19, a fastener 20 and a fan 21.
The vehicle lamp 10 is a headlamp capable of selectively performing low beam and high beam lighting, and is configured as a projector type lamp unit, for example.
The projection lens 12 has, on a front surface thereof, an exit surface 30 having a convex shape based on a single circular arc. The projection lens 12 has a circular shape, as seen from the front of the lamp. The projection lens 12 has a first lens portion 31 configured to form a first rear focal point F1 and a second lens portion 32 configured to form a second rear focal point F2. The projection lens 12 has a configuration in which the first lens portion 31 has a first incident surface 31a at a side opposite the exit surface 30 and the second lens portion 32 has a second incident surface 32a at the on a side opposite to the exit surface 30.
The projection lens 12 is configured to form the first rear focal point F1 on an optical axis of the first incident surface 31a of the first lens portion 31 and to form the second rear focal point F2 on an optical axis of the second incident surface 32a of the second lens portion 32. The projection lens 12 is configured to project light source images, which must be formed on respective focal surfaces comprising the first rear focal point F1 and the second rear focal point F2, on a vertical virtual screen in front of the lamp, in the form of inverted images. The first rear focal point F1 and the second rear focal point F2 are arranged in a high-low direction so that the first rear focal point F1 is positioned above the second rear focal point F2. That is, the projection lens 12 is a multifocal lens having the two rear focal points F1, F2.
The projection lens 12 is arranged at a front portion of the lens holder 13 having a cylindrical shape. The fixing ring 11 is fixed to the lens holder 13 from the front. The projection lens 12 is held at an outer peripheral rim portion 12a by the lens holder 13 and the attachment ring 11, so that it is supported on the front portion of the lens holder 13. The lens holder 13 configured to support the projection lens 12 is attached to the base member 19. Thus, the projection lens 12 is supported by the base member 19 via the lens holder 13.
The base element 19 is formed of a metallic material having excellent thermal conductivity such as aluminum. The base member 19 has an upper wall portion 19a having a horizontal planar shape and an inclined wall portion 19b extending obliquely downwardly and forwardly from a forward end of the wall portion. upper 19a. On the upper wall portion 19a, a plurality of heat radiating vanes 19c extending downward from a lower surface of the upper wall portion are arranged side-by-side in the front-to-back direction. The fan 21 is arranged under the base element 19. The wind generated by the fan 21 is sent to the heat radiating fins 19c extending downwards from below.
The base member 19 has a configuration in which an upper surface of the upper wall portion 19a is a first surface 41 and a front surface of the inclined wall portion 19b is a second surface 42. In the element base 19, a dipped beam light source 14 is arranged on the first surface 41, and a first matrix light source 16 and a second matrix light source 17 are arranged on the second surface 42.
The dipped beam light source 14 has a white light emitting diode, and an upper surface thereof is configured as a luminescent surface. The dipped beam light source 14 is arranged at the rear of the projection lens 12 and is configured to emit light to form a light distribution pattern for dipped beam, in the illustrative embodiment. The dipped beam light source 14 is attached to the first surface 41 of the upper wall portion 19a of the base member 19 via a fastener 14a.
The reflector 15 is attached to the first surface 41 of the upper wall portion 19a of the base member 19 so as to cover the light source for dipped beam 14 from above. The reflector 15 has an inner surface configured as a reflecting surface 15a, and the reflective surface 15a is configured to reflect light emitted from the low beam light source 14 towards the projection lens 12. Reflective surface 15a is configured as a curved surface having a substantially elliptical shape whose focal point is the center of the light emission of the dipped beam light source 14, and its eccentricity is adjusted to gradually increase from a vertical section towards a horizontal section.
As shown in FIGS. 5, 6A and 6B, the first matrix light source 16 has a plurality (eleven, in the illustrative embodiment) of semiconductor luminescent elements 51 and a circuit board 52. The first matrix light source 16 is arranged at the rear of the projection lens 12. The semiconductor luminous elements 51 are arranged in a single row in the left-right direction. On the other hand, the semiconductor luminous elements 51 may also be arranged in two or more rows. The semiconductor light-emitting element 51 is configured by a white light-emitting diode, for example, and has a light output portion configured by a light-emitting surface having a square shape, for example. Also, in the first matrix light source 16, the respective arrangement steps of the plurality of semiconductor luminescent elements 51 in the left-right direction of the lamp decrease toward the first rear focal point Fl of the lens. projection 12.
The semiconductor luminous elements 51 are mounted on the circuit board 52. The circuit board 52 is provided with a connector 53.
The connector 53 is arranged at the right side of the circuit board 52, as seen from the front. The connector 53 is connected to the third connector (not shown) disposed at a power supply line, and electricity is supplied from the power supply line to the semiconductor light elements 51. Semiconductor luminescent elements 51 of the first matrix light source 16 are configured to be individually illuminated and extinguished.
The circuit board 52 having the semiconductor luminescent elements 51 mounted thereon is supported on the second surface 42, which is the front surface of the inclined wall portion 19b of the base member 19. The first matrix light source 16 is arranged at a position corresponding to the first rear focal point F1 of the projection lens 12. Furthermore, the position corresponding to the first rear focal point F1 is not limited to a position which coincides completely with the first rear focal point F1, and indicates a position comprising the first rear focal point F1, which is to be projected as an inverted image on the vertical virtual screen in front of the lamp by the projection lens 12, and the surroundings of the first rear focal point.
The first matrix light source 16 is arranged so that the light output portions configured by the luminescent surfaces of the semiconductor luminous elements 51 are directed obliquely forward and upward by mounting the card. circuit 52 on the second inclined surface 42. Also, the first matrix light source 16 is arranged so that the light output portions of the semiconductor light elements 51 are located below the first rear focal point Fl. the second surface 42 of the base member 19 is configured as a surface inclined with respect to the optical axis of the first incident surface 31a of the projection lens 12 so that the light output portion of the first matrix light source 16 is located under the first rear focal point F1. Also, the first matrix light source 16 is arranged between e the first rear focal point F1 of the projection lens 12 and the low beam light source 14 in the front-to-back direction of the lamp (see Figure 4 and the like).
The second matrix light source 17 has a plurality (eleven, in the illustrative embodiment) of semiconductor luminescent elements 55 and a circuit board 56. The second matrix light source 17 is arranged at the back of the projection lens 12. The semiconductor luminous elements 55 are arranged in a single row in the left-right direction. On the other hand, semiconductor luminescent elements 55 may also be arranged in two or more rows. The semiconductor light-emitting element 55 is configured by a white light-emitting diode, for example, and has a light-output portion configured by a square-shaped light-emitting surface, for example.
The semiconductor luminescent elements 55 are mounted on the circuit board 56. The circuit board 56 is provided with a connector 57. The connector 57 is arranged at the left side of the circuit board 56, as shown in FIG. we see it from the front. The connector 57 is connected to the third connector (not shown) disposed at a power supply line, and electricity is supplied from the power supply line to the semiconductor glow elements 55. semiconductor luminescent elements 55 of the second matrix light source 17 are configured to be individually turned on and off.
The circuit board 56 having the semiconductor light elements 55 mounted thereon is supported on the second surface 42, which is the front surface of the inclined wall portion 19b of the base member 19, via the fixing element 20. The fastening element 20 has a tapered shape, so that its thickness gradually decreases upwards. The second matrix light source 17 supported on the second surface 42 of the base member 19 via the fastening element 20 is arranged at a position corresponding to the second rear focal point F2 of the projection lens 12. Moreover, the position corresponding to the second rear focal point F2 is not limited to a position which fully coincides with the second rear focal point F2, and indicates a position comprising the second rear focal point F2, which is to be projected as a inverted image on the vertical virtual screen in front of the lamp by the projection lens 12, and the surroundings of the second rear focal point.
The first matrix light source 16 and the second matrix light source 17 are arranged in the up-down direction. Specifically, the first matrix light source 16 is arranged above the second matrix light source 17. Also, the second matrix light source 17 is attached to the second surface 42 of the base member 19 through the fastener 20 whose thickness gradually decreases upward, so that it is inclined more strongly than the first matrix light source 16. Thus, the light output portion configured by the luminescent surface each semiconductor luminescent element 55 of the second matrix light source 17 is directed upwardly than the light output portion configured by the luminescent surface of each luminescent semiconductor element 51 of the first light source. matrix 16. Namely, the light output portion of each luminescent semiconductor element 51 of the first matrix light source 16 is configured to be e directed to a different direction than that of the light output portion of each semiconductor luminescent element 55 of the second matrix light source 17, in the up-down direction of the lamp.
The central position of the first matrix light source 16 is arranged at the right side of the central position of the lamp, as seen from the front, and the central position of the second matrix light source. 17 is arranged at the left side of the central position of the lamp, as seen from the front. Thus, the central position of the first matrix light source 16 is arranged at a position different from the central position of the second matrix light source 17 in the left-right direction of the lamp.
The optical element 18 is a separate component of the base element 19 having the first matrix light source 16 and the second matrix light source 17 mounted thereon, and is mounted at the a front side of the first matrix light source 16 and the second matrix light source 17 supported by the base member 19. The optical element 18 is formed from die cast aluminum or polycarbonate resin having excellent resistance to heat, for example.
The optical element 18 is formed with a first opening 61 and a second opening 62. The first opening 61 and the second opening 62 are formed in the width direction of the optical element 18. In a state where Optical element 18 is supported by base element 19, first aperture 61 is arranged at a position corresponding to the first matrix light source 16 and second aperture 62 is arranged at a position corresponding to the second light source. Thus, the first matrix light source 16 is exposed in front of the lamp through the first opening 61 of the optical element 18, and the second matrix light source 17 is exposed forward. of the lamp via the second opening 62 of the optical element 18.
The optical element 18 has a vertical wall surface that forms a vertical slice portion of the first aperture 61 and is configured as a first reflective surface 65. The first reflective surface 65 is configured to reflect the emitted light from the first matrix light source 16 towards the first incident surface 31a of the projection lens 12. Also, the optical element 18 has a vertical wall surface which forms a vertical slice portion of the second aperture 62 and is configured as a second reflective surface 66. The second reflective surface 66 is configured to reflect light emitted from the second matrix light source 17 toward the second incident surface 32a of the projection lens 12 The first reflecting surface 65 and the second reflecting surface 66 have received mirror inition by deposition of aluminum vapor or the like.
The optical element 18 has a screen portion 68 at an upper portion thereof. The screen portion 68 functions as a screen configured to shade a portion of the light from the dipped beam light source 14 reflected on the reflective surface 15a of the reflector 15 and thereby form a cutoff line of the light distribution pattern for low beam. An upper surface of the screen portion 68 forms a reflecting surface 69 configured to upwardly reflect a portion of the light from the dipped beam light source 14 reflected on the reflective surface 15a of the reflector 15. The reflective surface 69 is formed to be slightly inclined forwards and downwards with respect to a horizontal plane, and is configured to allow the reflected light to be incident on the first incident surface 31a of the projection lens 12. Reflective surface 69 has received a mirror finish by deposition of aluminum vapor or the like.
As shown in Figure 7, the light L emitted from the light source for low beam 14 is reflected on the reflective surface 15a of the reflector 15 and is then incident on the first incident surface 31a of the lens. projection 12. Also, a portion of the light L reflected on the reflective surface 15a of the reflector 15 is reflected on the reflecting surface 69 of the optical element 18 and is then incident on the first incident surface 31a of the projection lens 12. Furthermore, a portion of the light L reflected on the reflective surface 15a of the reflector 15 passes through the first rear focal point Fl.
As shown in FIG. 8, the LAI light emitted from the first matrix light source 16 is directly incident on the first incident surface 31a of the projection lens 12 or is reflected on the first reflecting surface 65 of the optical element 18 and is then incident on the first incident surface 31a of the projection lens 12. The light LA2 emitted from the second matrix light source 17 is directly incident on the second incident surface 32a of the lens projection 12 or is reflected on the second reflecting surface 66 of the optical element 18 and is then incident on the second incident surface 32a of the projection lens 12.
[YES] Figure 9 shows a light distribution pattern projected on a virtual screen disposed in a vertical direction 25 m in front of the lamp. As shown in FIG. 9, the light L emitted from the dipped beam light source 14 and incident on the first incident surface 31a of the projection lens 12 is emitted from the exit surface 30 and forms a light distribution diagram for dipped beam PL. The light distribution pattern for the dipped-beam headlamps PL is formed with a cutoff line CL by the screen portion 68.
The LAI light emitted from the first matrix light source 16 and incident on the first incident surface 31a of the projection lens 12 is emitted from the exit surface 30 and forms an additional light distribution pattern. PI. The additional light distribution pattern PI is a light distribution pattern in which the light distribution patterns Pla of the respective semiconductor light elements 51 of the first matrix light source 16 are aligned in a single row in the horizontal direction. Here, as the respective arrangement steps of the semiconductor luminous elements 51 of the first matrix light source 16 in the left-right direction decrease toward the first rear focal point F1 of the projection lens 12, the central portion the additional light distribution pattern PI has greater illumination, so that the light is illuminated to a distant position.
The light LA2 emitted from the second matrix light source 17 and incident on the second incident surface 32a of the projection lens 12 is emitted from the exit surface 30 and forms an additional light distribution scheme. P2. The additional light distribution pattern P2 is a light distribution pattern in which the light distribution patterns P2a of the respective semiconductor light elements 55 of the second matrix light source 17 are aligned in a single row in the horizontal direction.
The additional light distribution pattern PI, to be formed by the LAI light from the first matrix light source 16, is a light distribution scheme for high beams. The additional light distribution pattern P2, to be formed by the light LA2 from the second matrix light source 17, overlaps both the light distribution pattern for the dipped beam PL, which must be formed by the light L from the dipped beam light source 14, and the additional high beam light distribution pattern PI, to be formed by the LAI light from the first matrix light source 16, on the vertical virtual screen in front of the lamp.
Here, in a space between the light distribution diagram for the dipped-beam headlamps PL whose cut-off line must be formed by the screen portion 68 of the optical element 18 and the additional light distribution pattern for traffic lights. PI road, it is difficult to overlap the light, and the light may not overlap in some cases, so that the amount of light can be reduced.
On the contrary, in accordance with the vehicle lamp 10 of the illustrative embodiment, in a state where the light distribution pattern for low beam headlights PL is formed and the additional light distribution pattern PI, which is a distribution diagram for high beams, is also formed, the additional light distribution pattern P2 is formed between the light distribution scheme for low beam lights PL and the additional light distribution pattern PI, in which the amount of light is reduced. Thus, the space between the light distribution pattern for low beam headlights PL and the additional light distribution pattern PI, in which the amount of light is reduced, is compensated by the additional light distribution pattern P2.
Also, as regards the light distribution patterns to be projected on the vertical virtual screen in front of the lamp, the additional light distribution pattern PI, which must be formed by the light LAI emitted from each semiconductor luminous element 51 of the first matrix light source 16, and the additional light distribution pattern P2, which must be formed by the light LA2 emitted from each semiconductor luminous element 55 of the second light source in matrix 17, are shifted in the left-right direction. Specifically, the additional light distribution pattern PI to be formed by the first matrix light source 16 is formed to the right of the center and the additional light distribution pattern P2 to be formed by the second matrix light source. 17 is formed to the left of the center. Furthermore, here the term "offset" denotes a meaning including a configuration in which the light distribution patterns Pla and the light distribution patterns P2a must be arranged to partially overlap each other in the left-right direction. and a configuration in which the light distribution patterns Pla and the light distribution patterns P2a are to be arranged alternately without overlapping each other in the left-right direction.
Thus, as shown in Figure 10, in comparison with a lighting region of the surface of an AS road by means of a general vehicle lamp, according to the illustrative embodiment, the amount of light is compensated by the additional light distribution pattern P2, and the additional light distribution pattern PI and the additional light distribution pattern P2 are shifted in the left-right direction, so that a lighting region of the surface of a AL route extended in the forward direction (the direction of arrow A in Figure 10) and in the left-right direction (the direction of arrow B in Figure 10) is formed.
Also, as the semiconductor luminous elements 51 of the first matrix light source 16 and the semiconductor luminous elements 55 of the second matrix light source 17 are configured to be individually turned on and off, respectively, it is possible to form light distribution patterns in accordance with various situations. For example, so that the light is not directed at an oncoming vehicle detected by an on-board camera, the additional light distribution pattern PI is formed by extinguishing some of the semiconductor light-emitting elements 51 of the first light source. in a matrix 16 configured to illuminate the position of the oncoming vehicle, so that it is possible to illuminate widely a road ahead of the vehicle within a range not causing a dazzling driver a oncoming vehicle. Also, the additional light distribution pattern P2 is formed by extinguishing some of the semiconductor light elements 55 of the second matrix light source 17 configured to illuminate the oncoming vehicle position, so that it is possible to illuminate largely the road ahead of the vehicle within a range not causing a glare of the driver of the oncoming vehicle.
[0120] (First operational effects)
As described above, the vehicle lamp 10 of the illustrative embodiment comprises the dipped beam light source (an example of the first light source) 14, the first matrix light source 16 and the second source of light. matrix light 17, and the first matrix light source 16 and the second matrix light source 17 are arranged in the up-down direction. For this reason, it is possible to mount many luminescent elements on the lamp without increasing the width of the lamp in the left-right direction. Also, in comparison with a lamp having a single matrix light source, as it is possible to mount more luminescent elements, the degree of freedom of design of the light distribution scheme to be added to the light distribution scheme for lamps crossover PL is improved, for example.
It is also possible to illuminate with the lights LA1, LA2 in front of the lamp, which must be emitted from the first matrix light source 16 and the second matrix light source 17, under the form sharper light distribution patterns, respectively, while suppressing the increase in size of the lamp.
It is also possible to use the LAI light to be emitted from the first matrix light source 16 as light to enhance the illumination function of the surface of a road.
Also, the light distribution diagram PI, which must be formed by the respective semiconductor light elements 51 of the first matrix light source 16, and the light distribution diagram P2, which must be formed by the elements respective semiconductor luminescent lights 55 of the second matrix light source 17 are shifted in the left-right direction of the lamp. For this reason, it is possible to increase the number of divisions in the light distribution patterns, which are configured by the first matrix light source 16 and the second matrix light source 17, and to improve their definitions, so that it is possible to form various patterns of light distribution, depending on the uses or situations.
In addition, the light distribution pattern, which must be formed by the light U 2 to be emitted from the second matrix light source 17, is configured to overlap the additional light distribution pattern PI which must be formed by the LAI light to be emitted from the first matrix light source 16, so that it is possible to effectively use a portion of the LA2 light to be emitted from the second source of matrix light 17, as a light distribution scheme for high beam.
Also, since the first matrix light source 16 is arranged between the first rear focal point F1 of the projection lens 12 and the light source for the dipped beam headlamps 14 in the front-to-back direction of the lamp, it It is possible to illuminate with the LAI light emitted from the first matrix light source 16 in front of the lamp through the vicinity of the first rear focal point F1 while suppressing the increase in size of the lamp in the direction before behind.
On the other hand, if a part functioning as a screen configured to form the cutoff line CL of the dipped beam light distribution diagram PL is formed at a pointed end of the base element 19 the tip end has a predetermined thickness due to stresses in the manufacturing conditions of the base member 19. Since the tip end can not reflect the light forward, it becomes a cause of a dark part.
In contrast, according to the illustrative embodiment, the optical element 18 disposed separately from the base member 19 is provided with the screen portion 68 configured to form the cutoff line CL of the light distribution pattern for PL dipped beam that is mounted on the base member 19. Since the optical element 18 having the screen portion 68 is a separate component of the base member 19, it is possible to finely shape the end portion. without being limited by the manufacturing conditions of the base member 19. For this reason, it is possible to reduce the thickness of the tip end in front of a cause of a dark part, so that it is possible to remove the dark part to a level such that a driver will not be able to notice it.
Also, as the optical element 18 has the first reflective surface 65 configured to reflect the LAI light emitted from the first matrix light source 16 towards the first incident surface 31a of the projection lens. 1 and the second reflective surface 66 configured to reflect light LA2 emitted from the second matrix light source 17 towards the second incident surface 32a of the projection lens 12, it is possible to use even more effectively the lights LA1, LA2 to be emitted from the first matrix light source 16 and the second matrix light source 17.
Also, the second surface 42 of the base member 19 is configured as a surface inclined with respect to the optical axis of the projection lens 12 so that the light output portions of the semiconductor light-emitting elements 51 of the first matrix light source 16 arranged on the second surface 42 are directed obliquely forward and upward, and that the light output portions of the semiconductor luminous elements 51 of the first light source in matrix 16 are located under the first rear focal point F1. It is therefore possible to allow the majority of light to be emitted from the first matrix light source 16 to pass through the first rear focal point Fl while by arranging the first matrix light source 16 in a position avoiding a light path so as to form a light distribution pattern for PL. For this reason, it may be possible to effectively use the LAI light of the first matrix light source 16.
Also, since the central position of the first matrix light source 16 is arranged at a position different from the central position of the second matrix light source 17 in the left-right direction of the lamp, the degree of freedom of design of the light distribution patterns in the left-right direction of the lamp is improved, so that the lighting function of the road surface can be enhanced, for example.
In addition, since the first matrix light source 16 and the second matrix light source 17 are aligned in the two stages in the up-down direction, it is possible to reduce the distance between the light-emitting element and the light source. the rear focal point of the projection lens as short as possible, in comparison with a configuration in which more luminescent elements are aligned in a single stage in the left-right direction of the lamp, so that It is possible to increase the efficiency of use of the light to be emitted from the luminescent elements.
On the other hand, it is possible to increase the definitions of light distribution patterns by increasing the numbers of the semiconductor luminous elements 51 of the first matrix light source 16 and the semiconductor luminous elements 55 of the second a matrix light source 17 to be aligned in the left-right direction, and the number of their stages in the up-down direction.
Also, in the illustrative embodiment, the dipped beam light source 14 has been illustrated in the form of the light source of the projector type optical system. However, the present invention is not limited thereto. That is, it is sufficient for the light source to be a light source of a projector-type optical system (a projection type optical system using a reflector and a projection lens), and the light distribution patterns can be formed according to the uses. For example, a light source configured to form a specific light distribution scheme for illuminating a road surface or a light source configured to form a light distribution pattern that is to illuminate a specific target may be used .
[O133] (Second operational effects)
In accordance with the vehicle lamp 10 of the illustrative embodiment, the exit surface 30 of the projection lens 12 is formed to have a convex shape based on a single circular arc, and the first matrix light source 16 ( an example of the first light source) and the second matrix light source 17 (an example of the second light source) are arranged at the rear of the projection lens 12. It is therefore possible to maintain the quality aesthetic appearance of the exterior of the lamp, seen from the front. Also, since the first matrix light source 16 is arranged at the position corresponding to the first rear focal point F1 and the second matrix light source 17 is arranged at the position corresponding to the second rear focal point F2, it is possible to illuminate with the lights LA1, LA2 in front of the lamp, which are to be emitted from the first matrix light source 16 and the second matrix light source 17, in the form of net light distribution patterns, and to improve the degree of freedom of design of light distribution patterns.
In particular, since the first matrix light source 16 and the second matrix light source 17 are arranged in the up-down direction, it is possible to improve the degree of freedom of design of the light distribution patterns. in the up-down direction of the lamp while suppressing the increase of lamp height in the left-right direction.
Also, as the lamp has the first reflective surface 65 configured to reflect the LAI light emitted from the first matrix light source 16 towards the first incident surface 31a of the projection lens 12 and the second reflective surface 66 configured to reflect the LA2 light emitted from the second matrix light source 17 towards the second incident surface 32a of the projection lens 12, it is possible to use the LAI lights even more efficiently, LA2 to be emitted from the first matrix light source 16 and the second matrix light source 17 and to illuminate with the lights in front of the lamp in the form of sharper light distribution patterns.
Also, since the central position of the first matrix light source 16 is arranged at a position different from the central position of the second matrix light source 17 in the left-right direction of the lamp, the degree of freedom of design of the light distribution patterns in the left-right direction of the lamp is improved, so that the lighting function of the road surface can be enhanced, for example.
In addition, since the first matrix light source 16 and the second matrix light source 17 are aligned in the two stages in the up-down direction, it is possible to reduce the distance between the light-emitting element and the light source. the rear focal point of the projection lens as short as possible, in comparison with a configuration in which more luminescent elements are aligned in a single row in the left-right direction of the lamp, so that It is possible to increase the efficiency of use of the lights to be emitted from the luminescent elements.
On the other hand, it is possible to increase the definitions of light distribution patterns by increasing the numbers of the semiconductor light elements 51 of the first matrix light source 16 and the semiconductor light elements 55 of the second light source. matrix light source 17 to be aligned in the left-right direction and the number of their stages in the up-down direction.
For example, as shown in FIG. 11, when the semiconductor luminous elements 51 of the first matrix light source 16 are aligned in two stages and the respective light distribution patterns Pla of the semiconductor luminous elements 51 in each stage are arranged in a single row, it is possible to illuminate widely with the light distribution pattern PI, which must be formed by the first matrix light source 16, in the left-right direction while suppressing the width of the lamp, and improve its definition. Similarly, when the semiconductor glow elements 55 of the second matrix light source 17 are aligned in two stages and the respective light distribution patterns P2a of the semiconductor glow elements 55 in each stage are arranged in a single row. it is possible to illuminate widely with the light distribution pattern P2, which is to be formed by the second matrix light source 17, in the left-right direction while suppressing the width of the lamp, and to improve its definition.
Also, in the illustrative embodiment, the dipped beam light source 14 has been illustrated in the form of the light source of the projector type optical system. However, the present invention is not limited thereto. That is, it is sufficient for the light source to be a light source of a projector type optical system (a projection type optical system using a reflector and a projection lens), and the light distribution patterns can be formed according to the uses. For example, a light source configured to form a specific light distribution scheme for illuminating a road surface or a light source configured to form a light distribution pattern that is to illuminate a specific target may be used .
[0141] (Third operational effects)
In accordance with the vehicle lamp 10 of the illustrative embodiment, the dipped beam light source 14 (an example of the first light source) is configured to emit light L to form the light distribution pattern for lights. PL, the first matrix light source 16 is configured to emit light LAI to form the additional light distribution scheme for high beams P1, and the second matrix light source 17 is configured to emit the light LA2 to form the additional light distribution pattern P2, which is intended to overlap both the light distribution scheme for low beam headlights PL and the additional light distribution pattern for high beam P1 on the vertical virtual screen in before the lamp. It is thus possible to increase the width of the road surface that the light to be emitted from the lamp is to illuminate, and to illuminate with light to a distant position by the light LA2 to be emitted to from the second matrix light source 17 and form the additional light distribution pattern P2, which is intended to overlap both the light distribution pattern for the dipped beam PL to be formed by the light L of the light source. light for dipped beam headlamps 14 and the additional light distribution scheme for high beam headlamps to be formed by the LAI light of the first matrix light source 16.
Also, the light distribution pattern PI, which must be formed by the respective semiconductor light elements 51 of the first matrix light source 16, and the light distribution pattern P2, which must be formed by the elements respective semiconductor luminescent lights 55 of the second matrix light source 17 are shifted in the left-right direction of the lamp. For this reason, it is possible to increase the number of divisions in the light distribution patterns, which are configured by the first matrix light source 16 and the second matrix light source 17, and to improve their definitions, so that it is possible to form various patterns of light distribution, depending on the uses or situations.
In addition, since the central position of the first matrix light source 16 is arranged at a position different from the central position of the second matrix light source 17 in the left-right direction of the lamp, it is possible to increase the width of the road surface in the left-right direction to be illuminated by the light, and to increase the number of divisions of the light distribution patterns, which are configured by the first matrix light source 16 and the second matrix light source 17.
Also, as the respective arrangement steps of the plurality of semiconductor luminescent elements 51 of the first matrix light source 16 in the left-right direction of the lamp decrease towards the first rear focal point Fl of the projection lens 12, it is possible to increase the efficiency of use of the light to be emitted from the first matrix light source 16 while increasing the width of the road surface to be illuminated by the light emitted from the lamp, so that the light can illuminate a distant position.
In addition, since the first matrix light source 16 and the second matrix light source 17 are aligned in the two stages in the up-down direction, it is possible to reduce the distance between the light-emitting element and the light source. the rear focal point of the projection lens as short as possible, in comparison with a configuration in which more luminescent elements are aligned in a single stage in the left-right direction of the lamp, so that It is possible to increase the efficiency of use of the light to be emitted from the luminescent elements.
On the other hand, it is possible to increase the definitions of the light distribution patterns by increasing the numbers of the semiconductor light elements 51 of the first matrix light source 16 and the semiconductor light elements 55 of the second light source. a matrix light source 17 to be aligned in the left-right direction, and the number of their stages in the up-down direction.
For example, as shown in FIG. 11, when the semiconductor luminous elements 51 of the first networked light source 16 are aligned in two stages and the respective light distribution patterns Pla of the semiconductor luminous elements 51 in each stage are arranged in a single row, it is possible to illuminate widely with the light distribution pattern PI, which must be formed by the first matrix light source 16, in the left-right direction while suppressing the width of the lamp, and improve its definition. Similarly, when the semiconductor glow elements 55 of the second matrix light source 17 are aligned in two stages and the respective light distribution patterns P2a of the semiconductor glow elements 55 in each stage are arranged in a single row. it is possible to illuminate widely with the light distribution pattern P2, which is to be formed by the second matrix light source 17, in the left-right direction while suppressing the width of the lamp, and to improve its definition.
Also, the vehicle lamp 10 is not limited to the projector type lamp and may be a parabola type lamp configured so that the light of the light source illuminates ahead of the vehicle by means of a reflector having a parabolic reflective surface, as seen from a sectional view.
[0149] (Fourth operational effects)
The vehicle lamp 10 of the illustrative embodiment comprises the first matrix light source 16 and the second matrix light source 17, and the first matrix light source 16 and the second matrix light source 17 are arranged in the direction up and down. For this reason, it is possible to mount many semiconductor light elements 51, 55 on the lamp without increasing the width of the lamp in the left-right direction. Also, the light distribution pattern PI, to be formed by the respective semiconductor light elements 51 of the first matrix light source 16, and the light distribution pattern P2, which is to be formed by the semiconductor light elements. respective conductors 55 of the second matrix light source 17 are shifted in the left-right direction of the lamp. For this reason, it is possible to increase the number of divisions in the light distribution patterns, which are configured by the first matrix light source 16 and the second matrix light source 17, and to improve their definitions, so that it is possible to form various patterns of light distribution, depending on the uses or situations.
Also, the projection lens 12 has the first rear focal point F1 and the second rear focal point F2, the first matrix light source 16 is arranged at the position corresponding to the first rear focal point F1, and the second source matrix light 17 is arranged at the position corresponding to the second rear focal point F2. It is therefore possible for the LAI, LA2 lights to illuminate in front of the lamp, which must be emitted from the first matrix light source 16 and the second matrix light source 17, in the form of light patterns. net light distribution.
Also, the projection lens 12 has the first lens portion 31 configured to form the first rear focal point F1 and the second lens portion 32 configured to form the second rear focal point F2, and the first reflective surface 65 configured to reflect the LAI light emitted from the first matrix light source 16 towards the incident surface 31a (an example of the incident surface) of the first lens portion 31 and the second reflective surface 66 configured to reflect the LA2 light emitted from the second matrix light source 17 towards the incident surface 32a (an example of the incident surface) of the second lens portion 32. It is thus possible that the LAI, LA2 lights illuminate in front of the lamp, which must be emitted from the first matrix light source 16 and the second matrix light source 17, in the form of sharper light distribution patterns.
In addition, the first reflecting surface 65 and the second reflecting surface 66 are disposed at the optical element 18, which is a separate component of the base element, and the optical element 18 has the first aperture 61 through which the first matrix light source 16 is exposed in front of the lamp and the second aperture 62 through which the second matrix light source 17 is exposed in front of the lamp in a state where the optical element is mounted on the base member 19. Thus, the optical element 18 is mounted on the base member 19, so that it is possible that the lights LA1, LA2 illuminate in front of the lamp, which must be emitted from the first matrix light source 16 and the second matrix light source 17, in the form of sharper light distribution patterns.
Also, since the light output portions of the respective semiconductor light elements 51 of the first matrix light source 16 are arranged to be directed to a different direction than the light output portions of the elements. respective light emitting semiconductor 55 of the second matrix light source 17 in the up-down direction of the lamp, it is possible to easily form the light distribution patterns using the respective matrix light sources, depending on the uses or situations.
Also, since the central part of the first matrix light source 16 is arranged at a position different from the central position of the second matrix light source 17 in the left-right direction of the lamp, the degree of The freedom of design of the light distribution patterns in the left-right direction of the lamp is improved, so that the illumination function of the surface of a road can be enhanced, for example.
In addition, since the first matrix light source 16 and the second matrix light source 17 are aligned in the two stages in the up-down direction, it is possible to reduce the distance between the light-emitting element and the light source. the rear focal point of the projection lens as short as possible, in comparison with a configuration in which more luminescent elements are aligned in a single stage in the left-right direction of the lamp, so that It is possible to increase the efficiency of use of the luminescent elements.
On the other hand, it is possible to increase the definitions of the light distribution patterns by increasing the numbers of the semiconductor luminous elements 51 of the first matrix light source 16 and the semiconductor luminous elements 55 of the second a matrix light source 17 to be aligned in the left-right direction, and the number of their stages in the up-down direction.
For example, as shown in FIG. 11, when the semiconductor luminous elements 51 of the first matrix light source 16 are aligned in two stages and the respective light distribution patterns Pla of the semiconductor luminous elements 51 in each stage are arranged in a single row, it is possible to illuminate widely with the light distribution pattern PI, which must be formed by the first matrix light source 16, in the left-right direction while suppressing the width of the lamp, and improve its definition. Similarly, when the semiconductor glow elements 55 of the second matrix light source 17 are aligned in two stages and the respective light distribution patterns P2a of the semiconductor glow elements 55 in each stage are arranged in a single row. it is possible to illuminate widely with the light distribution pattern P2, which is to be formed by the second matrix light source 17, in the left-right direction while suppressing the width of the lamp, and to improve its definition.
Also, in the illustrative embodiment, the dipped beam light source 14 has been illustrated in the form of the light source of the projector type optical system. However, the present invention is not limited thereto. That is, it is sufficient for the light source to be a light source of a projector-type optical system (a projection type optical system using a reflector and a projection lens), and the light distribution patterns can be formed according to the uses. For example, a light source configured to form a specific light distribution scheme for illuminating a road surface or a light source configured to form a light distribution pattern that is to illuminate a specific target may be used .
[0159] Modified embodiments of the vehicle lamp 10 of the illustrative embodiment are then described. (First modified embodiment)
As shown in Figure 12, in a first modified embodiment, a single rigid circuit board 70 is present. The rigid circuit board 70 is a glass and epoxy circuit board or a circuit board made of paper and phenol, for example. The rigid circuit board 70 is fixed and mounted on the second surface 42, which is the inclined surface of the base member 19. The rigid circuit board 70 is mounted on it with the first matrix light source 16 and the second light source in matrix 17 with a certain interval in the up-down direction. The rigid circuit board 70 is disposed at a side portion with a connector 71. The connector 71 is connected to a connector (not shown) of a power line, and electricity is supplied from from the power supply line to the semiconductor luminescent elements 51 of the first matrix light source 16 and to the semiconductor luminescent elements 55 of the second matrix light source 17.
According to the above configuration, it is possible to easily arrange the first matrix light source 16 and the second matrix light source 17 at predetermined positions of the base element 19. It is also possible to easily arrange the first matrix light source 16 and the second matrix light source 17 at predetermined positions of the base element 19. possible to eliminate the relative positional difference between the first matrix light source 16 and the second matrix light source 17.
[0161] (Second modified embodiment)
As shown in Figures 13 and 14, in a second modified embodiment, there is provided a single flexible circuit board 80. The flexible circuit board 80 is a circuit board including a wiring diagram 82 made of a sheet of copper is formed on a very flexible base 81 made of a plastic film such as polyimide. The flexible circuit board 80 is fixed and mounted on the second surface 42, which is the inclined surface of the base member 19. The flexible circuit board 80 is mounted on it with the first matrix light source 16 and the second light source in matrix 17 with a certain interval in the up-down direction. A detachable portion 83 extends from a side portion of the flexible circuit board 80, and the detachable portion 83 is provided with a connector 84. The connector 84 is connected to a connector (not shown) of a power supply line, and electricity is supplied from the power supply line to the semiconductor luminescent elements 51 of the first matrix light source 16 and the semiconductor luminescent elements 55 of the second source. of light in a matrix 17.
The flexible circuit board 80 is mounted on the second surface 42 having an inclined surface of the base member 19, on which the semiconductor luminescent elements 51 of the first matrix light source 16 and the luminescent elements semiconductors 55 of the second matrix light source 17 are mounted at different angles. Thus, in a state where the flexible circuit board 80 is mounted on the base member 19, the light output portions, which are the luminescent surfaces of the respective semiconductor light elements 51 of the first matrix light source. 16, are arranged to be directed to a different direction than the light output portions which are the luminescent surfaces of the respective semiconductor glow elements 55 of the second matrix light source 17, in the up-down direction. of the lamp.
Furthermore, preferably, the flexible circuit board 80 is provided with reinforcing plates 85 made of a metal sheet, for example aluminum, at the mounting portions of the semiconductor luminous elements 51 of the first matrix light source 16, semiconductor luminescent elements 55 of the second matrix light source 17, and connector 84, to improve the rigidity of the component mounting parts. In doing so, it is possible to easily fix the first matrix light source 16, the second matrix light source 17 and the connector 84 to the base member 19. Also, when attaching the flexible circuit board 80 to the base member 19, a thermally conductive adhesive, an aluminum sheet or the like may be interposed between the flexible circuit board 80 and the base member 19. It is thus possible to transmit the heat favorably, which It will be generated from the first matrix light source 16 and the second matrix light source 17, from the base element 19. Equally, the first matrix light source 16 and the second light source 16 The matrix 17 can be configured by direct mounting of the semi-conductive semiconductor elements 51, 55 on the flexible circuit board 80, or can be configured by mounting a circuit board, having the light elements. 100 semiconductors 51, 55 mounted thereon, on the flexible circuit board 80.
[0164] In accordance with the above configuration, since the flexible circuit board 80 can be arranged bent, the operability is improved when the first matrix light source 16 and the second light source are mounted. The fixed circuit board 80 is also used, so that the stresses are reduced in the arrangement of the first matrix light source 16 and the second light source. matrix 17 in predetermined postures. Therefore, the degree of design freedom of the light distribution patterns, which are configured by the first matrix light source 16 and the second matrix light source 17, is improved. In addition, the flexible circuit board 80 is used, so that it is possible to easily provide the detachable portion 83. Also, for example, it is possible to arrange the connector 84 in a position where it does not interfere with the constitutional components of the lamp, such as the lamp holder 13, a positioning pin and the like, so that the degree of freedom of design is improved.
[0165] (Third modified embodiment)
As shown in Figure 15, in a third modified embodiment, the lamp has a projection lens 90 having a convex exit surface divided in the up-down direction. Specifically, the projection lens 90 has a first lens portion 91 at an upper side and a second lens portion 92 at a lower side, and the first lens portion 91 and the second lens portion 91 lens 92 are configured integral. The first lens portion 91 has a first incident surface 91a and a first exit surface 91b, and the second lens portion 92 has a second incident surface 92a and a second exit surface 92b.
In the third modified embodiment, the light L from the dipped beam light source 14 and the light LAI from the first matrix light source 16 are incident on the first incident surface 91a of the first light source. lens portion 91 and are emitted from the first exit surface 91b. Also, the light LA2 from the second matrix light source 17 is incident on the second incident surface 92a of the second lens portion 92 and is emitted from the second output surface 92b.
[0167] In accordance with the above structure, it is possible to extend the light distribution patterns forward and widen them in the left-right direction while saving costs.
[0168] (Fourth modified embodiment)
As shown in Figure 16, in a fourth modified embodiment, the lamp has a projection lens 100 and a sub-lens 102. The projection lens 100 and the sub-lens 102 are unifocal lenses respectively. The projection lens 100 has an incident surface 101a and an exit surface 101b. Also, the sub-lens 102 has an incident surface 103a and an exit surface 103b. The sub-lens 102 is arranged between the second matrix light source 17 and the projection lens 100.
In the fourth modified embodiment, the light L from the dipped beam light source 14 and the light LAI from the first matrix light source 16 are incident on the incident surface 101a of the lens. projection 100 and are emitted from the exit surface 101b. Also, the light LA2 from the second matrix light source 17 is incident on the incident surface 103a of the sub-lens 102, is emitted from the exit surface 103b, is incident on the incident surface 101a of the lens 100 and is then emitted from the exit surface 101b.
According to the above structure, as the projection lens 100, which is seen from the front, is the unifocal lens, it is possible to guide the light LA2 from the second matrix light source 17 in a predetermined direction by means of the sub-lens 102, so that the light distribution patterns extend forwardly and widen in the left-right direction while the appearance of the lamp, such as view from the front, is improved.
[0171] (Fifth modified embodiment)
As shown in Figure 17, in a fifth modified embodiment, the second matrix light source 17 is supported not on the base member 19 but on a wall light 111 arranged at a position different from that of the element. base 19, and is arranged above the first matrix light source 16.
In the fifth modified embodiment, the light L from the dipped beam light source 14 and the LAI light from the first matrix light source 16 are incident on the second incident surface 32a of the lens. 12 and are emitted from the exit surface 30. Also, the light LA2 from the second matrix light source 17 is incident on the first incident surface 31a of the projection lens 12 and is emitted from the exit surface 30.
According to the above structure, it is possible to extend and enlarge the light distribution patterns while improving the lamp appearance, as seen from the front.
[0174] (Sixth modified embodiment)
As shown in Fig. 18, a lamp of a sixth modified embodiment comprises a projection lens 120, which is circular as seen from the front of the lamp, and has an exit surface 121 having a convex shape based on a single circular arc on a front surface. The projection lens 120 has a first lens portion 125 configured to form a first rear focal point F1 and a second lens portion 126 configured to form a second rear focal point F2. The projection lens 120 is configured so that the first lens portion 125 is formed under the second lens portion 126 and the first rear focal point F1 is arranged above the second rear focal point F2. Namely, the projection lens 120 is a multifocal lens having the two rear focal points F1, F2.
L light emitted from the light source for low beam 14 is reflected on the reflective surface 15a of the reflector 15 and is then incident on the first incident surface 125a of the first lens portion 125. The first source a matrix light 16 is configured to emit LAI light toward a first incident surface 125a of the first lens portion 125, and the second matrix light source 17 is configured to emit light LA2 direction of a second incident surface 126a of the second lens portion 126. Thus, the lights L, LAI from the light source for low beam lights 14 and the first matrix light source 16 and the light LA2 of the second matrix light source 17 intersect each other in the up-down direction. Furthermore, the present invention is not limited to the configuration in which the first matrix light source 16 emits light LAI directly to the first incident surface 125a of the first lens portion 125. For example, the first A matrix light source 16 may be configured to indirectly transmit the LAI light to the first incident surface 125a of the first lens portion 125 using an optical element such as a reflector, a lens or the like. Similarly, the present invention is not limited to the configuration in which the second matrix light source 17 directly emits light LA2 towards the second incident surface 126a of the second lens portion 126. For example, the second matrix light source 17 may be configured to indirectly transmit light LA2 to the second incident surface 126a of the second lens portion 126 using an optical element such as a reflector, a lens or the like.
FIG. 19 represents a light distribution diagram projected on a virtual screen arranged in the vertical direction at 25 m in front of the lamp. As shown in FIG. 19, the light L emitted from the dipped beam light source 14 and incident on the first incident surface 125a of the projection lens 120 is emitted from the exit surface 121 and forms a light distribution diagram for low beam headlamps PL having a cut-off line CL.
The LAI light emitted from the first matrix light source 16 and incident on the first incident surface 125a of the projection lens 120 is emitted from the exit surface 121 and forms an additional light distribution pattern. PI. Also, the light LA2 emitted from the second network light source 17 and incident on the second incident surface 126a on the projection lens 120 is emitted from the exit surface 121 and forms an additional light distribution pattern P2 .
The additional light distribution pattern P2 formed by the light LA2 from the second matrix light source 17 overlaps both the light distribution pattern for the dipped beam PL formed by the light L from the light source. for low beam headlamps 14 and the additional light distribution pattern for high beam P1 formed by the light LAI from the first matrix light source 16, on the vertical virtual screen in front of the lamp.
According to the above configuration, after the LAI light to be emitted from the first matrix light source 16 towards the first incident surface 125a of the projection lens 120 and the LA2 light to be emitted from the second matrix light source 17 towards the second incident surface 126a of the projection lens 120 have been allowed to intersect each other in the up-down direction, the lights illuminate forward of the lamp from the projection lens 120, so that the degree of freedom of design of the light distribution patterns is improved.
[0180] (Seventh embodiment modified)
As shown in Figure 20, in a seventh modified embodiment, the first matrix light source 16 and the second matrix light source 17 are arranged at the left and right sides. Specifically, the first matrix light source 16 is arranged on the right side and the second matrix light source 17 is arranged on the left side, as seen from the front of the lamp. Also, in the seventh modified embodiment, the lamp comprises a projection lens 130, which is circular as viewed from the front of the lamp and has an exit surface 131 having a convex shape based on a single circular arc on a front surface. The projection lens 130 has a first lens portion 135 configured to form a first rear focal point F1 and a second lens portion 136 configured to form a second rear focal point F2. The first lens portion 135 is formed on the left side with respect to the second lens portion 136, as seen from the front of the lamp, and the first rear focal point F1 is arranged on the right side with respect to the second focal point. back F2, as seen from the front of the lamp. Namely, the projection lens 130 is a multifocal lens having the two rear focal points F1, F2.
The first matrix light source 16 is configured to emit LAI light to a first incident surface 135a of the first lens portion 135, and the second matrix light source 17 is configured to to emit the light LA2 towards a second incident surface 136a of the second lens portion 136. Thus, the L, LAI lights from the dipped beam light source 14 and the first matrix light source 16 and light LA2 from the second matrix light source 17 intersect each other in the left-right direction. Furthermore, the present invention is not limited to the configuration in which the first matrix light source 16 emits light LAI directly to the first incident surface 135a of the first lens portion 135. For example, the first light source A matrix light source 16 may be configured to indirectly transmit the LAI light to the first incident surface 135a of the first lens portion 135 using an optical element such as a reflector, lens, or the like. Similarly, the present invention is not limited to the configuration in which the second matrix light source 17 directly emits light LA2 towards the second incident surface 136a of the second portion of line 136. For example, the The second matrix light source 17 may be configured to indirectly transmit the light LA2 to the second incident surface 136a of the second portion 136 by using an optical element such as a reflector, lens, or the like.
The LAI light emitted from the first matrix light source 16 and incident on the first incident surface 135a of the projection lens 130 is emitted from the exit surface 131 and forms an additional light distribution pattern. PI. Also, the light LA2 emitted from the second matrix light source 17 and incident on the second incident surface 136a of the projection lens 130 is emitted from the exit surface 131 and forms an additional light distribution pattern P2 .
According to the above configuration, it is possible to improve the degree of design freedom of the light distribution patterns in the left-right direction of the lamp while suppressing the detailed increase of the lamp in the direction Up down.
In addition, after the LAI light to be emitted from the first matrix light source 16 towards the first incident surface 135a of the projection lens 130 and the LA2 light to be emitted from the second matrix light source 17 towards the second incident surface 136a of the projection lens 120 have been allowed to cross each other in the left-right direction, the lights illuminate in front of the lamp from projection lens 130, so that the degree of freedom of design of light distribution patterns is further improved.
Moreover, the light LAI to be emitted from the first matrix light source 16 and the light LA2 to be emitted from the second matrix light source 17 need not intersect one another. the other in the left-right direction. For example, the lights LA1, LA2 to be emitted from the first matrix light source 16 and the second matrix light source 17 may respectively be incident on the first incident surface 135a and the second incident surface 136a of the projection lens 130 without being able to cross each other in the left-right direction by using the projection lens 130, the first lens portion 135 of which is formed on the right side with respect to the second part of the lens. lens 136, as seen from the front of the lamp, and the first rear focal point F1 is arranged on the right side relative to the second rear focal point F2, as seen from the front of the lamp.
[0186] (Eighth modified embodiment)
As shown in Fig. 21, a lamp of an eighth modified embodiment has a projection lens 90 having a convex exit surface divided in the up-down direction. Specifically, the projection lens 90 has a first lens portion 91 at an upper side and a second lens portion 92 at a lower side, and the first lens portion 91 and the second portion of the lens portion 91. lens 92 are configured integral. The first lens portion 91 has a first incident surface 91a and a first exit surface 91b, and the second lens portion 92 has a second incident surface 92a and a second exit surface 92b.
According to the lamp of the eighth modified embodiment, the light L from the dipped beam light source 14 and the light LAI from the first matrix light source 16 are incident on the first incident surface 91a. of the first lens portion 91 and is emitted from the first output surface 91b. Also, the light LA2 from the second matrix light source 17 is incident on the second incident surface 92a of the second lens portion 92 and is emitted from the second output surface 92b.
[0188] In accordance with the above structure, it is possible to extend the light distribution patterns forward and widen them in the left-right direction while saving costs.
Also, in accordance with the above configuration, the light distribution diagram for the low beam headlamps PL is formed by the light source for low beam headlamps 14, the additional light distribution pattern for high beam headlamps is formed by the first matrix light source 16, and the additional light distribution pattern P2, which must overlap both the light distribution pattern for the low beam headlamps PL and the additional light distribution pattern for the high beam headlamps, is formed by the second matrix light source 17. Thus, for example, it is possible to increase the width of the road surface to be illuminated by the light to be emitted from the lamp, and to illuminate with the light to a distant position.
[0190] (Ninth modified embodiment)
As shown in Figure 22, a lamp of a ninth modified embodiment has a projection lens 100 and a sub-lens 102. The projection lens 100 and the sub-lens 102 are unifocal lenses respectively. The projection lens 100 has an incident surface 101a and an exit surface 101b. Also, the sub-lens 102 has an incident surface 103a and an exit surface 103b. The sub-lens 102 is arranged between the second matrix light source 17 and the projection lens 100.
In the lamp of the ninth modified embodiment, the light L from the dipped beam light source 14 and the light LAI from the first matrix light source 16 are incident on the incident surface 101a of the projection lens 100 and are emitted from the exit surface 101b. Also, the light LA2 from the second matrix light source 17 is incident on the incident surface 103a of the sub-lens 102, is emitted from the exit surface 103b, is incident on the incident surface 101a of the lens 100 and is then emitted from the exit surface 101b.
According to the above structure, as the projection lens 100, which is seen from the front, is the unifocal lens, it is possible to guide the LA2 light from the second matrix light source 17 into the a predetermined direction by means of the sub-lens 102, so that the light distribution patterns extend forwardly and widen in the left-right direction while the appearance of the lamp, such as view from the front, is improved.
[0193] Also, according to the above configuration, the light distribution diagram for the low beam headlamps PL is formed by the light source for low beam headlamps 14, the additional light distribution pattern for high beam headlamps is formed by the first matrix light source 16, and the additional light distribution pattern P2, which must overlap both the light distribution pattern for the low beam headlamps PL and the additional light distribution pattern for the high beam headlamps, is formed by the second source of matrix light 17. Thus, for example, it is possible to increase the width of the road surface to be illuminated by the light to be emitted from the lamp, and to illuminate with the light to a distant position.
[0194] (Tenth modified embodiment)
As shown in Fig. 23, in a lamp of a tenth modified embodiment, the second matrix light source 17 is supported not on the base member 19 but on the fixture 111 arranged at a position different from that of the base element 19, and is arranged above the first matrix light source 16.
In the lamp of the tenth modified embodiment, the light L from the dipped beam light source 14 and the light LAI from the first matrix light source 16 are incident on the second incident surface 32a of FIG. the projection lens 12 and are emitted from the exit surface 30. Also, the light LA2 from the second matrix light source 17 is incident on the first incident surface 31a of the projection lens 12 and is transmitted to from the exit surface 30.
According to the above structure, it is possible to extend and enlarge the light distribution patterns while improving the lamp appearance, as seen from the front.
Also, in accordance with the above configuration, the light distribution scheme for the dipped-beam headlamps PL is formed by the light source for the dipped-beam headlamps 14, the additional light distribution pattern for the high-beam headlamps PI is formed by the first matrix light source 16, and the additional light distribution pattern P2, which must overlap both the light distribution pattern for the low beam headlamps PL and the additional light distribution pattern for the high beam headlamps, is formed by the second source of matrix light 17. Thus, for example, it is possible to increase the width of the road surface to be illuminated by the light to be emitted from the lamp, and to illuminate with the light to a distant position.
[0198] (Eleventh modified embodiment)
As shown in Figure 24, according to a lamp of an eleventh modified embodiment, a lighthouse 1A is a multi-optic headlight having two vehicle lamps 10A, 10B. For example, a vehicle lamp 10A is a low beam lamp having the light source for low beam headlamps 14 and the other vehicle lamp 10b is a high beam lamp having the first light source 16 in matrix and the second matrix light source 17. The vehicle lamp 10A is configured to emit light L from the dipped beam light source 14 so as to form the light distribution pattern for high beam lights PL. Also, the vehicle lamp lOB is configured to emit light LAI from the first matrix light source 16 so as to form the additional light distribution scheme for high beams P1 and to emit light LA2 from the second light source. in matrix 17 so as to form the additional light distribution diagram P2, which is intended to overlap both the light distribution scheme for low beam headlights PL and the additional light distribution pattern PI on the vertical virtual screen ahead of the lamp.
According to the above structure, it is possible to increase the width of the road surface that the light to be emitted from the lamp must illuminate, and to illuminate with light to a position remote by the light LA2 from the second matrix light source 17 to form the additional light distribution pattern P2, which is intended to overlap both the light distribution pattern for the dipped beam PL to be formed by the light L of the dipped beam light source 14 and the additional light distribution pattern PI to be formed by the light LAI of the first matrix light source 16. Also, like each of the vehicle lamps 10A, 10B has fewer sources of light, it is possible to simplify the structure.
[0200] Also, in accordance with the above configuration, the light distribution diagram for the dipped-beam headlamps PL is formed by the light source for the dipped-beam headlamps 14, the additional light distribution pattern for the high-beam headlamps PI is formed by the first matrix light source 16, and the additional light distribution pattern P2, which must overlap at the same time with the light distribution pattern for low beam headlights PL and the additional light distribution pattern for high beam headlamps, is formed by the second source of matrix light 17. Thus, for example, it is possible to increase the width of the road surface to be illuminated by the light to be emitted from the lamp, and to illuminate with the light to a distant position.
[0201] (Twelfth modified embodiment)
As shown in Fig. 25, in a lamp of a twelfth modified embodiment, a projection lens 12A is integrally formed with a convex portion 33. The convex portion 33 is formed at the boundary portion between the first incident surface 31a of the first lens portion 31 configured to form the first rear focus point F1 and the second incident surface 32a of the second hub portion 32 configured to form the second rear focal point F2. The convex portion 33 protrudes towards the rear of the lamp and is formed in the width direction, which is the left-right direction of the projection lentiile 12.
According to the above configuration, as the focal areas to be formed by the convex portion 33 are dispersed, when the lights L, LAI, LA2 from the light source for low beam 14, the first source of As the matrix light 16 and the second matrix light source 17 pass through the convex portion 33, the lights that must pass through the convex portion 33 and must illuminate in front of the lamp are scattered, so that the boundary between a lighted area and a Unlighted area to be formed in front of the lamp can be blurred.
Moreover, the present invention is not limited to the illustrative embodiments and can be modified and improved appropriately.
In addition, the materials, shapes, sizes, numerical values, formations, numbers, arrangement places and the like, of the respective constitutional elements of the illustrative embodiments, are arbitrary to the extent that the present invention can be practiced, and are not particularly limited.

权利要求:
Claims (34)
[1" id="c-fr-0001]
A vehicle lamp comprising: a projection lens (12); a first light source (14) arranged at the rear of the projection lens and configured to emit light so as to form a predetermined light distribution pattern; a reflector (15) configured to reflect light emitted from the first light source (14) towards the projection lens (12); a first matrix light source (16) arranged at the rear of the projection lens (12) and comprising a plurality of semiconductor light elements (51) aligned in at least one row; and a second matrix light source (17) arranged at the rear of the projection lens (12) and comprising a plurality of semiconductor light elements (55) aligned in at least one row, wherein the first source matrix light (16) and the second matrix light source (17) are arranged in a high-low direction.
[2" id="c-fr-0002]
Vehicle lamp according to claim 1, wherein the projection lens (12) has a first rear focal point (F1) and a second rear focal point (F2), wherein the first matrix light source (16). is arranged at a position corresponding to the first rear focal point (F1), and wherein the second matrix light source (17) is arranged at a position corresponding to the second rear focal point (F2).
[3" id="c-fr-0003]
The vehicle lamp of claim 1 or 2, wherein the plurality of semiconductor light elements (51) of the first matrix light source (16) are configured to be individually turned on and off. wherein the plurality of semiconductor light elements (55) of the second matrix light source (17) are configured to be individually turned on and off, and wherein, in the light distribution patterns to be projected on a vertical virtual screen in front of the lamp, a light distribution pattern to be formed by the respective semiconductor light elements (51) of the first matrix light source (16) and a light distribution pattern to be formed by the respective semiconductor light elements (55) of the second matrix light source (17) are shifted in the left-right direction of the lamp.
[4" id="c-fr-0004]
The vehicle lamp according to one of claims 1 to 3, wherein the second matrix light source (17) is configured to emit light to form at least a portion of a light distribution pattern for traffic lights. road.
[5" id="c-fr-0005]
The vehicle lamp according to one of claims 1 to 4, wherein the first matrix light source (16) is arranged between the first rear focal point (F1) of the projection lens (12) and the first source of light (14) in the front-to-back direction of the lamp.
[6" id="c-fr-0006]
The vehicle lamp according to one of claims 1 to 5, wherein the first light source (14) is configured to emit light to form a light distribution pattern for low beam headlamps, the vehicle lamp comprising furthermore: a base element (19) on which are mounted the first matrix light source (16) and the second matrix light source (17); and an optical element (18) which is a separate component of the base element (19) and is configured to function as a screen to form a cutoff line of the light distribution pattern for low beam in a state where the optical element (18) is mounted on the base element (19).
[7" id="c-fr-0007]
The vehicle lamp according to claim 6, wherein the optical element (18) comprises: a first configured reflecting surface (65) for reflecting light emitted from the first matrix light source (16) in the direction of an incident surface of the projection lens (12); and a second reflective surface (66) configured to reflect light emitted from the second matrix light source (17) toward the incident surface of the projection lens (12).
[8" id="c-fr-0008]
Vehicle lamp according to claim 6 or 7, wherein the base member (19) comprises a first surface (41) on which the first light source (14) is arranged and a second surface (42) on which the first matrix light source (16) and the second matrix light source (17) are arranged, and wherein the second surface (42) is an inclined surface that is inclined with respect to an optical axis of the lens of projection (12) such that a portion of the luminous flux of the first matrix light source (76) arranged on the second surface (42) is directed obliquely in a forward and upward direction, and a portion of the luminous flux of the first matrix light source (16) is located below the first rear focal point (F1).
[9" id="c-fr-0009]
The vehicle lamp according to claim 8, further comprising: a rigid circuit board (70) on which are arranged the first matrix light source (16) and the second matrix light source (17), wherein at least a portion of the rigid circuit board is attached to the inclined surface (42).
[10" id="c-fr-0010]
The vehicle lamp of claim 8, further comprising: a flexible circuit board (80) on which are arranged the first matrix light source (16) and the second matrix light source (17), wherein at least a portion of the flexible circuit board (80) is attached to the inclined surface (42).
[11" id="c-fr-0011]
The vehicle lamp according to one of claims 1 to 10, wherein the center of the first matrix light source (16) is arranged at a position different from the center of the second matrix light source (17) in the left-right direction of the lamp.
[12" id="c-fr-0012]
A vehicle lamp comprising: a projection lens (12) comprising an exit surface (30) having a convex shape based on a single circular arc; a first light source (16) arranged at the rear of the projection lens (12); and a second light source (17) arranged at the rear of the projection lens (12), wherein the projection lens (12) has a first rear focal point (F1) and a second rear focal point (F2) wherein the first light source (16) is arranged at a position corresponding to the first rear focal point (F1), and wherein the second light source (17) is arranged at a position corresponding to the second rear focal point (F2 ).
[13" id="c-fr-0013]
Vehicle lamp according to claim 12, wherein the first light source (16) and the second light source (17) are arranged in a high-low direction.
[14" id="c-fr-0014]
The vehicle lamp of claim 13, wherein the projection lens (120) comprises a first lens portion (125) configured to form the first rear focal point (F1) and a second lens portion (126) configured to forming the second rear focal point (F2), wherein the first lens portion (125) is formed under the second lens portion (126), wherein the first rear focal point (F1) is located above the second point rear focus (F2), wherein the first light source (16) is configured to emit light toward an incident surface (125a) of the first lens portion (125), and wherein the second light source (16) is A light source (17) is configured to emit light toward an incident surface (126a) of the second lens portion (126).
[15" id="c-fr-0015]
Vehicle lamp according to claim 12, wherein the first light source (16) and the second light source (17) are arranged in a left-right direction.
[16" id="c-fr-0016]
The vehicle lamp according to claim 15, wherein the projection lens (12) comprises a first lens portion (135) configured to form the first rear focal point (F1) and a second lens portion (136) configured to forming the second rear focal point (F2), wherein the first lens portion (135) is formed on the left side with respect to the second lens portion (136), wherein the first rear focal point (F1) is located on the right side with respect to the second rear focal point (F2), wherein the first light source (16) is configured to emit light toward an incident surface (135a) of the first lens portion (135); ), and wherein the second light source (17) is configured to emit light toward an incident surface (136a) of the second lens portion (136).
[17" id="c-fr-0017]
The vehicle lamp according to one of claims 12 to 16, wherein the projection lens (12) comprises a first lens portion (31) configured to form the first rear focal point (F1) and a second portion configured to forming the second rear focal point (F2), the vehicle lamp further comprising: a first reflective portion (65) interlocked to reflect light emitted from the first light source (16) toward an incident surface ( 31a) of the first lens portion (31); and a second reflective portion (66) that is interlocked to reflect light emitted from the second light source (17) toward an incident surface (32a) of the second lens portion (32).
[18" id="c-fr-0018]
The vehicle lamp according to one of claims 12 to 17, wherein the first light source is a first matrix light source (16) comprising a plurality of semiconductor light elements (51) aligned in at least a row, wherein the second light source is a second matrix light source (17) comprising a plurality of semiconductor luminescent elements (56) aligned in at least one row, and wherein the center of the first source matrix light (16) is arranged at a position different from the center of the second matrix light source (17) in the left-right direction of the lamp.
[19" id="c-fr-0019]
The vehicle lamp of claim 18, further comprising: a base member (19); and a rigid circuit board (70) on which are mounted the first matrix light source (16) and the second matrix light source (17), wherein the rigid circuit board (70) is mounted on the basic element (19).
[20" id="c-fr-0020]
The vehicle lamp of claim 18, further comprising: a base member (19), and a flexible circuit board (80) on which are arranged the first matrix light source (16) and the second source of matrix light (17), wherein at least a portion of the flexible circuit board (80) is attached to the base member.
[21" id="c-fr-0021]
A vehicle lamp comprising: a first light source (14) configured to emit light to form a light distribution pattern for low beam; a first matrix light source (16) comprising a plurality of semiconductor light elements (51) aligned in at least one row; and a second matrix light source (17) comprising a plurality of semiconductor luminescent elements (56) aligned in at least one row, wherein the first matrix light source (16) is configured to emit light to form at least a portion of an additional distributed light distribution scheme for high beams, and wherein the second matrix light source (17) is configured to emit light to form a light distribution pattern intended to overlap both the light distribution scheme for dipped beam headlamps and the additional light distribution pattern for high beam headlamps on a vertical virtual screen in front of the lamp.
[22" id="c-fr-0022]
22. The vehicle lamp according to claim 21, wherein the plurality of semi-conductive semiconductor elements (51) of the first matrix light source (16) are configured to be individually illuminated and extinguished, in which piurality semiconductor light elements (56) of the second matrix light source (17) are configured to be individually illuminated and extinguished, and in that, in the light distribution patterns to be projected on a vertical virtual screen. in front of the lamp, a light distribution pattern to be formed by the respective semiconductor light elements (51) of the first matrix light source (16) and a light distribution pattern to be formed by the elements respective semiconductor luminescent (56) of the second matrix light source (17) are shifted in the left-right direction of the mpe.
[23" id="c-fr-0023]
Vehicle lamp according to claim 21 or 22, wherein the center of the first matrix light source (16) is arranged at a position different from the center of the second matrix light source (17) in the left direction. -the right of the lamp.
[24" id="c-fr-0024]
The vehicle lamp according to one of claims 21 to 23, further comprising: a projection lens (12), wherein the first matrix light source (16) is arranged at the rear of the projection lens (12), and wherein respective arrangement steps of the plurality of semiconductor light elements of the first matrix light source in the left-right direction of the lamp decrease towards the rear focal point (F1) projection lens (12).
[0025]
A vehicle lamp comprising: a projection lens (12) having a plurality of focal points (F1; F2); a first matrix light source (16) arranged at the rear of the projection lens (12) and comprising a plurality of semiconductor light elements (51) aligned in at least one row; and a second matrix light source (17) arranged at the rear of the projection lens (12) and comprising a plurality of semiconductor light elements (56) aligned in at least one row, wherein the first source of matrix light (16) and the second matrix light source (17) are arranged in a high-low direction, wherein the plurality of semiconductor light elements (51) of the first matrix light source ( 16) are configured to be individually turned on and off, wherein the plurality of semiconductor light elements (56) of the second matrix light source (17) are configured to be individually turned on and off. wherein, in the light distribution patterns to be projected on a vertical virtual screen in front of the lamp, a light distribution pattern to be formed by the respective semiconductor light elements (51) of the first light source. matrix (16) and a light distribution pattern to be formed by the respective semiconductor light elements (56) of the second matrix light source (17) are shifted in the left-right direction of the lamp.
[0026]
Vehicle lamp according to claim 25, wherein the projection lens (12) has a first rear focal point (F1) and a second rear focal point (F2), wherein the first matrix light source (16). is arranged at a position corresponding to the first rear focal point (F1), and wherein the second matrix light source (17) is arranged at a position corresponding to the second rear focal point (F2).
[0027]
The vehicle lamp of claim 26, wherein the projection lens (12) comprises a first lens portion (31) configured to form the first rear focal point (F1) and a second lens portion (32) configured to forming the second rear focal point (F2), and wherein a convex portion (33) projecting towards the rear of the lamp is formed at a boundary portion between an incident surface (31a) of the first lens portion (31) and an incident surface (32a) of the second lens portion (32).
[0028]
The vehicle lamp according to claim 26, wherein the projection lens comprises a first lens portion (31) configured to form the first rear focal point (F1) and a second lens portion (32) configured to form the second rear focal point (F2), the vehicle lamp further comprising: a first reflective portion (65) configured to reflect light emitted from the first matrix light source (16) toward an incident surface (Sla ) of the first lens portion (31); and a second reflective portion (66) configured to reflect light emitted from the second matrix light source (17) toward an incident surface (32b) of the second lens portion (32).
[0029]
Vehicle lamp according to claim 28, further comprising: a base member (19) on which are mounted the first matrix light source (16) and the second matrix light source (17); and an optical element (18) which is a separate component of the base member (19) and is formed with a first opening (61) through which the first matrix light source (16) is to be exposed in front of the lamp and a second aperture (62) through which the second matrix light source (17) is to be exposed in front of the lamp in a state where the optical element (18) is mounted on the base member ( 19), wherein the optical element (18) comprises the first reflecting portion (65) and the second reflecting portion (66).
[0030]
The vehicle lamp according to one of claims 25 to 29, wherein a light output portion of each semiconductor light element (51) of the first matrix light source (16) is configured to be directed to a direction different from that of a light output portion of each semiconductor light element (55) of the second matrix light source (17) in the up-down direction of the lamp.
[0031]
The vehicle lamp of claim 25, further comprising: a base member (19); and a flexible circuit board (80) on which are mounted the first matrix light source (16) and the second matrix light source (17), wherein a light output surface of each semiconductor light element (51) of the first matrix light source (16) is directed to a direction different from that of a light output surface of each semiconductor light element (55) of the second matrix light source (17). ) in the up-down direction of the lamp in a state where the flexible circuit board (80) is mounted on the base member (19).
[0032]
The vehicle lamp of claim 25, further comprising: a base member (19); and a rigid circuit board (70) on which are mounted the first matrix light source (16) and the second matrix light source (17), wherein the rigid circuit board (70) is mounted on the basic element (19).
[0033]
The vehicle lamp of claim 26, wherein the projection lens (120) comprises a first lens portion (125) configured to form the first rear focal point (F1) and a second lens portion (126) configured to forming the second rear focal point (F2), wherein the first lens portion (125) is formed under the second lens portion (126), wherein the first matrix light source (16) is arranged above the second matrix light source (17), wherein the first matrix light source (16) is configured to emit light toward an incident surface (125a) of the first lens portion (125); ), and wherein the second matrix light source (17) is configured to emit light toward an incident surface (126a) of the second lens portion (126).
[0034]
The vehicle lamp according to one of claims 25 to 33, wherein the center of the first matrix light source (16) is arranged at a position different from the center of the second matrix light source (17) in the left-right direction of the lamp.

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法律状态:
2018-04-05| PLFP| Fee payment|Year of fee payment: 2 |

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2019-04-03| PLFP| Fee payment|Year of fee payment: 3 |

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2020-09-25| PLSC| Search report ready|Effective date: 20200925 |

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2021-02-12| ST| Notification of lapse|Effective date: 20210105 |

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JP2016106383A|JP6764257B2|2016-05-27|2016-05-27|Vehicle lighting|

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JP2016106381A|JP2017212168A|2016-05-27|2016-05-27|Vehicular lighting fixture|

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