• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A vehicle light (10) includes a projection lens (12) and a first light source (14). Light emitted by the first light source (14) is radiated forward by the projection lens (12). The mask (20) blocks a portion of light from the first light source (14) toward the projection lens (12) to form a low beam light distribution pattern. The light emitting unit (30) causes light to be incident on the projection lens (12) to form an additional light distribution pattern for the high beam. The light emitting unit (30) includes a second light source (32) and a transparent element (34). The light emitted by the second light source (32) is incident on the transparent element (34). The transparent element (34) emits incident light from its front end surface (34a). An emission window (34dB) is formed in the upper surface (34d) of the transparent element (34) and at the rear of a leading edge of the upper surface (34d). The transmitting window (34dB) emits light incident on the transparent element (34) towards the projection lens (12).
    公开号:FR3024762A1
    申请号:FR1557663
    申请日:2015-08-11
    公开日:2016-02-12
    发明作者:Michio Tsukamoto
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    [0001] [0001] Exemplary embodiments of the invention relate to a projector type vehicle light. [0002] Projector-type vehicle lights are known in which light from a light source disposed at the rear of a projection lens is emitted forward by the projection lens. JP 2005-108554 A (corresponding to US 2005/0068787 A1) discloses a configuration such that the low beam illumination and the high beam illumination are made selectively using such a light. vehicle type projector. In this vehicle light, a portion of the light which is directed from a first light source to the projection lens is blocked by a mask so as to form a passing light light distribution pattern. In addition, light emitted by a second light source is incident on the projection lens so as to additionally form an additional light distribution pattern for the high beam. A combination of the low beam light distribution pattern and the additional high beam light distribution pattern is a road light distribution pattern. In the vehicle light described in JP 2005-108554 A, the mask separates the light emitted by the first light source and the light emitted by the second light source at a rear focal plane of the light. projection lens. As a result, the low beam light distribution pattern and the additional street light distribution pattern do not overlap. If a front end portion of the mask has any thickness, a gap is formed between the cross fire light distribution pattern and the additional high beam light distribution pattern. [0007] Exemplary embodiments of the invention have been realized due to the above circumstances, and provide a vehicle light which is configured to be able to selectively perform a passing light illumination and a high beam illumination and to be able to form a high beam light distribution pattern with a regular continuity between a low beam light distribution pattern and a high beam light distribution pattern . In order to obtain the vehicle light described above, an exemplary embodiment designs a configuration in which a light emitting unit 20 for forming an additional light distribution pattern of traffic light. is provided with a transparent element. [0009] (1) A vehicle light is configured to be capable of selectively providing low beam illumination and high beam illumination. The vehicle light includes a projection lens and a first light source. The first light source is disposed at the rear of the projection lens. Light emitted by the first light source 30 is irradiated forwards through the projection lens. A mask and a light emitting unit are disposed at the rear of the projection lens. The mask blocks a portion of the light that is directed from the first light source toward the projection lens to form a low beam light distribution pattern. The light emitting unit causes light to be incident on the projection lens to form an additional high beam light distribution pattern in addition to the low beam light distribution pattern. The light emitting unit comprises a second light source and a transparent element. The transparent element comprises a front end surface. Light emitted by the second light source is incident on the transparent element. The transparent element is configured to emit incident light from the front end surface. The mask is configured by performing surface treatment on an upper surface of the transparent member. An emission window is formed in the upper surface of the transparent element and at the rear of a leading edge of the upper surface. The transmitting window is configured to emit light, which is incident from the second light source on the transparent element, to the projection lens. Light from the first light source may be incident on the projection lens as direct light. Alternatively, light from the first light source may be reflected by a reflector and then incident on the projection lens as reflected light. [0011] The "first light source" and the "second light source" are not particularly limited. Examples of the first and second light sources include (i) light emitting elements such as light emitting diodes and laser diodes, and (ii) light bulb sources. The "mask" is configured by performing a surface treatment on the upper surface of the transparent element. It should be noted that the "surface treatment" method is not particularly limited so long as light from the first light source is prevented from being incident on the transparent element. Examples of the surface treatment include (i) a mirror surface treatment such as aluminum deposition or (ii) a non-reflective treatment such as a black coating. [0013] The shape and the specific material properties of the "transparent element" are not particularly limited, as long as the light that is incident from the second light source on the transparent element is emitted from the surface of the transparent element. front end and the transmitting window to the projection lens. [0014] The specific arrangement and shape of the "emission window" are not particularly limited, as long as the emission window is formed to be separated from the front edge of the upper surface of the transparent element and at the rear of the front edge of the upper surface of the transparent element. [0015] As described in the above configuration, the vehicle light is configured to be a headlamp-type vehicle light which selectively provides low beam illumination and high beam illumination. . In addition, the vehicle light includes the light emitting unit for forming the additional traffic light distribution pattern. The light emitting unit comprises the second light source and the transparent element. The mask blocks some of the light from the first light source. The mask is configured as a surface treatment on the upper surface of the transparent member. The transparent element is configured to emit light, which is incident from the second light source, from the front end face and the emission window from the upper surface to the projection lens. This configuration provides the following advantageous effects. [0016] The basic form of the additional traffic light distribution pattern may be formed by the light emitted from the front end surface of the transparent element. In addition, the additional traffic light distribution pattern may be formed by the light emitted from the transmission window, so as to extend to an area below a cutoff line 15 of the transmission pattern. low beam light distribution. Thus, it is possible to prevent a gap between the passing light light distribution pattern and the additional light distribution pattern of road light to be formed. As a result, the continuity between the low beam light distribution pattern and the additional street light distribution pattern can be improved. [0018] Therefore, the vehicle light from point (1) can selectively perform the low beam illumination and the high beam illumination and can form the road light light distribution pattern with the regular continuity between the low beam light distribution pattern and the additional fire light distribution pattern. [0019] (2) In the vehicle light of (1), the upper surface of the transparent element may comprise an area in front of the emission window. The area of the upper surface of the transparent member may be a forward reflective surface extending obliquely downwardly and rearwardly from the leading edge of the upper surface. With this configuration, the front reflective surface reflects a portion of light emitted from the transmitting window, so that the reflected light can be used to form the additional traffic light distribution pattern. As a result, it is furthermore possible to improve the continuity between the crosslamp light distribution pattern and the additional traffic light distribution pattern. [0020] (3) In the vehicle light according to any one of the points (1) and (2), the transparent element may comprise a plurality of transparent segments which are arranged in parallel in the right and left directions. The second light source may include a plurality of light emitting elements which are arranged such that light emitted by the light emitting elements is incident on the transparent segments, respectively. The plurality of light emitting elements can be configured so that they are able to be turned on individually. With this configuration, the following advantageous effects can be obtained. That is, the additional light distribution pattern can be formed by simultaneously turning on the different light emitting elements. Thus, a traffic light distribution pattern can be formed. Also, an additional light distribution pattern in which a portion of the additional light distribution pattern described above is absent can be formed by selectively illuminating a portion of the different light emitting elements. An intermediate light distribution pattern 3024762 7 having an intermediate shape between the low beam light distribution pattern and the street light light distribution pattern can thus be formed.
    [0002] Fig. 1 is a side sectional view illustrating a vehicle light according to an exemplary embodiment of the invention; Fig. 2 shows the vehicle light according to the exemplary embodiment when viewed along a direction of an arrow II in Fig. 1; Fig. 3 is a detailed view of a portion III in Fig. 1; Figure 4 is a perspective view illustrating major elements of the vehicle light; Figs. 5A and 5B are views illustrating light distribution patterns formed on a virtual vertical screen which is in a position 25 m in front of the vehicle light, by light emitted towards the front of the vehicle light FIGS. 5A and 5B showing the light distribution patterns to be seen through; Figure 6 is similar to Figure 4 and shows a vehicle light according to an exemplary modification of the exemplary embodiment; and Figure 7 is similar to Figures 5A and 5B and shows how the vehicle light according to the modification example operates. [0023] Exemplary embodiments of the invention will be described below with reference to the accompanying drawings. Fig. 1 is a side sectional view illustrating a vehicle light 10 in an exemplary embodiment of the invention. Fig. 2 shows the vehicle light 10 when viewed along a direction of an arrow II in Fig. 1. Fig. 3 is a detailed view of a portion III in Fig. 1. Fig. 4 5 is a perspective view illustrating main elements of the vehicle light 10. As shown in FIGS. 1 to 4, the vehicle light 10 according to the exemplary embodiment is a lighthouse which can realize 10 selectively a low beam illumination and a high beam illumination. The vehicle light 10 is of a projector type. [0026] That is, the vehicle light 10 is configured to include a projection lens 12, a light emitting element 14, and a reflector 16. The projection lens 12 has an optical axis Ax extending in front and rear vehicle directions. The light emitting element 14 serves as a light source. The light emitting element 14 is disposed on a rear side of a rear focal point F of the projection lens 12. The reflector 16 is arranged to cover the light emitting element 14 by the above. The reflector 16 reflects light from the light emitting element 14 to the projection lens 12. [0027] In addition, the vehicle light 10 is configured to include a mask 20 and a transmitting unit The mask 20 blocks a portion of the light traveling from the light emitting element 14 to the projection lens 12 so as to form a low beam light distribution pattern. The light emitting unit 30 causes light to be incident on the projection lens 12 to additionally form an additional traffic light distribution pattern with respect to the light distribution pattern. low beam. [0028] The vehicle light 10 is configured such that the optical axis Ax moves slightly downwardly with respect to the front and rear vehicle directions in a state where an adjustment of the optical axis Ax is completed. The specific configuration of the vehicle light 10 will then be described. The projection lens 12 is a plano-convex aspherical lens having a convex front surface and a planar rear surface. The projection lens 12 reverses and projects a light source image formed in a rear focal plane of the projection lens 12 on a virtual vertical screen in front of the vehicle light 10. The rear focal plane comprises the rear focal point F of the projection lens 12. [0031] A lens holder 18 supports the projection lens 12 at an outer peripheral rim portion 20 of the projection lens 12. In addition, a base member 22 supports the support lens 18. The light emitting element 14 is a white light emitting diode. The light emitting element 14 comprises a light emitting surface having a laterally elongated rectangle shape. The light emitting element 14 is arranged to face upward in a state where the light emitting surface of the light emitting element 14 is in a horizontal plane including the optical axis Ax. The light emitting element 14 is supported by the base member 22. [0033] A reflective surface 16a of the reflector 16 is configured by a curved surface which is a substantially elliptical surface having a substantially identical long axis. the optical axis Ax and having a first focal point at a light emitting center of the light emitting element 14.
    [0003] The eccentricity of the reflecting surface 16a progressively increases from a vertical cross section to a horizontal cross section. Therefore, the reflector 16 converges light from the light emitting element 14 at a point which is slightly forward of the rear focal point F in the vertical cross section. The converging position of the reflector 16 in the horizontal cross-section is slightly further forward of the rear focal point F. The reflector 16 is supported by the base member 22. [0034] The light emitting unit 30 is configured to include a transparent element 34 and a plurality of light emitting elements 32. The transparent element 34 is disposed below the rear focal point F of the projection lens 12. The light emitting elements 32 serve as second source of light. The light emitted by the light emitting elements 32 is incident on the transparent element 34. A specific configuration of the light emitting unit 30 will be described later. The mask 20 is formed by performing a mirror treatment (such as aluminum deposition) on an upper surface 34d of the transparent element 34 constituting the light emitting unit 30. [0036] The mask 20 blocks a portion of the light that is emitted by the light emitting element 14 and is reflected by the reflector 16. In addition, the mask 20 reflects the light blocked upwardly so as to be incident on the projection lens 12.
    [0004] This incident light is emitted forwards by the projection lens 12 as light downward. [0037] The mask 20 comprises a left zone which is on a left side of the optical axis Ax (on a right side of the vehicle light 10 when seen from the front side of the vehicle light 10), a straight area which is on a right side of the optical axis Ax, and a short inclined surface between the left zone and the right zone. The left zone is formed by a first horizontal plane comprising the optical axis Ax. The right zone is configured by a second horizontal plane which is at a lower height of a landing than the left zone. The short inclined surface connects the left zone and the right zone. A front edge 20a of the mask 20 extends from the rear focal point F to both left and right sides. A specific configuration of the light emitting unit 30 will then be described. The transparent element 34 of the light emitting unit 30 is configured by fifteen transparent segments 34A, 34B, 34C, 34D. Each of the transparent segments 34A, 34B, 34C, 34D is a transparent plate made of a transparent resin (or glass). The transparent segments 34A, 34B, 34C, 34D extend along a vertical plane parallel to the optical axis Ax. The transparent segments 34A, 34B, 34C, 34D are arranged parallel to each other along the right and left directions with side surfaces of the transparent segments 34A, 34B, 34C, 34D which are in close contact with each other. the other. Each of the transparent segments 34A, 34B, 34C, 34D has the same width in the right and left directions. The side surfaces of the transparent segments 34A, 34B, 34C, 34D have substantially the same shape with respect to each other. Each of the transparent segments 34A, 34B, 34C, 34D includes a front end surface 34a, a bottom surface 34b, a reflective surface 34c, and the top surface 34d. Each front end surface 34a is in the rear focal plane of the projection lens 12 and extends along a vertical plane perpendicular to the optical axis Ax. Each lower surface 34b has a planar shape. Similarly, when viewed in a side sectional view (e.g., FIGS. 1 and 3), each bottom surface 34b extends obliquely downward and rearward from a position below an intersection between the optical axis Ax and the corresponding front end surface 34a. Each reflective surface 34c has a curved surface shape and extends upwardly from a trailing edge of the lower surface 34b. Each top surface 34d has a planar shape and extends forwardly from an upper edge of the reflective surface 34c. When viewed from the side, the front end surfaces 34a of the transparent segments 34A, 34B, 34C, 34D are in the same position, the lower surfaces 34b of the transparent segments 34A, 34B, 34C, 34D. are in the same position, and the reflective surfaces 34c of the transparent segments 34A, 34B, 34C, 34D are in the same position. On the other hand, the upper surfaces 34d form part of the mask 20. Therefore, the upper surfaces 34d are at different heights depending on the positions where the transparent segments 34A, 34B, 34C, 34D are provided. The seven transparent segments 34A constitute the left zone of the mask 20. The upper surfaces 34d of the seven transparent segments 34A are disposed in the first horizontal plane comprising the optical axis Ax. The six transparent segments 34D make up the right zone of the mask 20. The upper surfaces 34d of the six transparent segments 34D are disposed in the second horizontal plane which is lower than a bearing in the first horizontal plane including the optical axis Ax. The transparent segment 34B is at the axial axis Ax. The upper surface 34d of the transparent segment 34B is arranged to span (i) the first horizontal plane including the optical axis Ax and (ii) the short inclined surface. The transparent segment 34C is adjacent to the transparent segment 34B and is on a right side of the transparent segment 34B. The upper surface 34d of the transparent segment 34C is arranged to span (i) the short inclined surface and (ii) the second horizontal plane which is lower than the first horizontal plane including the optical axis Ax. The upper surfaces 34d of the transparent segments 34A, 34B, 34C, 34D extend forward from the upper edges of the reflective surfaces 34c along a horizontal direction. A leading end portion of each upper surface 34d constitutes a front reflecting surface 34dA extending obliquely downwardly and rearwardly from a leading edge of the upper surface 34d (i.e. before 20a of the mask 20). Each of the transparent segments 34A, 34B, 34C, 34D is provided with an emission window 34dB which extends parallel to the front end surface 34a and which is disposed at a rear edge of the front reflective surface 34dA. In a manner similar to the upper surfaces 34d, mirror treatment is performed on the reflective surfaces before 34dA. It should be noted that a mirror treatment is not performed on the transmission windows 34dB. Each of the transparent segments 34A, 34B, 34C, 34D is supported by the base member 22 at the bottom surface 34b. Each light emitting element 32 5 is a white light emitting diode. The light emitting elements 32 are supported by the base member 22 in a state where the light emitting elements 32 are disposed below and near rear end areas of the lower surfaces 34b of the transparent segments 34A, 34B, 34C, 34D. Each light emitting element 32 is disposed such that a light emitting surface 32a is obliquely directed upwardly and rearwardly in a direction perpendicular to the lower surface 34b [0049] A recess portion 34b1 is formed in the rear end region of the lower surface 34b of each of the transparent segments 34A, 34B, 34C, 34D. Each recess portion 34b1 has a hemispherical shape and surrounds the light emitting surface 32a of the corresponding light emitting element 32. The light emitted by each light emitting element 32 is incident at the the recess portion 34b1, on the corresponding segment of the transparent segments 34A, 34B, 34C, 34D. Mirror processing is performed on the reflecting surface 34c of each of the transparent segments 34A, 34B, 34C, 34D. Mirror treatment is also performed on portions, on a front side of the recess portions 34b1, of the lower surfaces 34b. Each of the transparent segments 34A, 34B, 34C, 34D internally reflect light, which is incident from the corresponding light emitting element 32, forwardly at the reflective surface 34c. Each reflective surface 34c is configured by a substantially elliptical curved surface having a first focal point at the light emitting center of the corresponding light emitting element 32. Each reflective surface 34c is configured such that the reflected light is caused to converge at a point which is slightly in front of the rear focal point F. The light reflected by the reflecting surface 34c of each of the transparent segments 34A, 34B, 34C, 34D is emitted forwardly through the corresponding front end surface 34a and the corresponding transmission window 34dB. The light emitted from the front end surfaces 34a is a light passing through a portion, below the front edge 20a of the mask 20, of the rear focal plane of the projection lens 12. In addition, the The light emitted from the emission windows 34dB is a light passing through a portion, above the front edge 20a of the mask 20, of the rear focal plane of the projection lens 12. Therefore, light passing through the rear focal plane of the projection lens 12, the light passing near the front edge 20a of the mask 20 is not lost. In addition, some of the light emitted from the emission windows 34dB is reflected upward by the reflective surfaces before 34dA. Therefore, a large amount of light passing near and above the front edge 20a of the mask 20 can be provided. [0053] FIGS. 5A and 5B are views illustrating light distribution patterns formed on a virtual vertical screen which is in a position 25 m in front of the vehicle light, by light emitted forwardly from 10. In Figures 5A and 5B, the light distribution patterns are drawn so as to be seen through. Figure 5A shows a PH1 road light distribution pattern. Figure 5B shows an intermediate light distribution pattern PM1. The traffic light light distribution pattern PH1 shown in FIG. 5A is a combined light distribution pattern, i.e., a combination of a passing light light distribution pattern. PL1 and an additional light distribution pattern of PA road light. [0055] It is assumed that the passing light light distribution pattern PL1 is a left-handed passing traffic light light distribution pattern. The crosslamp light distribution pattern PL1 includes clipping lines CL1, CL2 on an upper end. Clipping lines CL1, CL2 are at different heights. Clipping lines CL1, CL2 extend in the horizontal direction through a V-V line. The line V-V passes, in the vertical direction, through a point H-V which is a point of flight of fire.
    [0005] The lower cut line CL1 is formed on an approaching path side, i.e. on a right side of the V-V line. The upper cut line CL2 is formed on a taxiway side, i.e. a left side of the line V-V. The upper cut line CL2 is formed in a higher position than the lower cut line CL1. An inclined portion is formed between the upper cutoff line CL2 and the lower cutoff line CL1 and connects the upper cutoff line CL2 and the lower cutoff line CL1. The crosslamp light distribution pattern PL1 is formed by projecting a light source image of the light emitting element 14 in the form of an inverted image and projected on the vertical screen. The light source image of the light emitting element 14 is formed at the rear focal plane of the projection lens 12 by the light emitted by the projection lens 12. light emitting element 14 and reflected by the reflector 16. The clipping lines CL1, CL2 are in the form of an inverted and projected image of the front edge 20a of the mask 20. In the distribution pattern of FIG. With the passing beam light PL1, an inflection point E is approximately 0.5 ° to 0.6 ° below HV. It should be noted that the point of inflection E is an intersection between the lower cut line CL1 and the line V-V. In the PH1 traffic light distribution pattern, the additional light distribution pattern PA is additionally formed as a laterally elongated light distribution pattern which extends around and above the lines. cutoff CL1, CL2. Thus, the traffic light distribution pattern PH1 illuminates a wide range of a road ahead of the vehicle. The additional light distribution pattern PA is a combined light distribution pattern, i.e., a combination of the fifteen light distribution patterns Pa. [0060] Each light distribution pattern Pa is a light distribution pattern in the form of an inverted and projected image of a light source image of the corresponding light emitting element 32. The light source image of each emission element 30 of light 32 is formed at the rear focal plane of the projection lens 12 by the light emitted from the corresponding segment of the transparent segments 34A, 34B, 34C, 34D of the light emitting unit 30. 3024762 18 [0061 ] Each light distribution pattern Pa has a substantially rectangle shape that is slightly elongated in the up and down directions. Each light distribution pattern Pa is formed in order to span the 5 cleavage lines CL1, CL2. Upper edges of the light distribution patterns Pa are well above the cut lines CL1, CL2 and at the same height. Lower edges of the light distribution patterns Pa are at a distance below the cut lines CL1, CL2. Part of each light distribution pattern Pa, which is above the cut lines CL1, CL2, is formed by the light emitted by the vertically elongated front end surface 34a of the corresponding segment 15 of the transparent segments 34A, 34B, 34C, 34D. Part of each light distribution pattern Pa, which is below the cut lines CL1, CL2, is formed by the light emitted from the horizontally elongated emission window 34dB of the corresponding segment of the transparent segments 34A, 34B, 34C, 34D. The intermediate light distribution pattern PM1 shown in Fig. 5B does not include the additional light distribution pattern PA in the traffic light light distribution pattern PH1. Instead, the intermediate light distribution pattern PM1 comprises an additional light distribution pattern PAm of which part of the additional light distribution pattern PA is absent. [0064] More specifically, the additional light distribution pattern PAm is a light distribution pattern in which, of the fifteen light distribution patterns Pa, the fifth and sixth light distribution patterns Pa are missing from the right. . The additional light distribution pattern PAm is formed by stopping the light emitting elements 32 which emit the light to be incident on the fifth and sixth transparent segments 34A from the left, among the fifteen elements of light. light emission 32 of the light emitting unit 30. Since such an intermediate light distribution pattern PM1 is formed, the vehicle light of the light 10 does not illuminate an approaching vehicle 2 The vehicle light 10 can thus illuminate the traffic route ahead of the vehicle as widely as possible as long as there is no glare from a driver of the approaching vehicle 2. [0066] The shape of the additional light distribution pattern PAm can be varied by sequentially changing the light emitting elements 32 to be extinguished according to a position of the approaching vehicle. Vehicle uptake 10 can thus illuminate the road ahead of the vehicle as widely as possible as long as there is no glare from a driver of approaching vehicle 2. [0067] to an onboard camera (not shown) if the approaching vehicle 2 is present or not. If there is a preceding vehicle on the road 25 for moving ahead of the vehicle or if there is a pedestrian on a road shoulder portion of the traveling road, the preceding vehicle and / or the pedestrian may be detected by the on-board camera and part of the light distribution patterns Pa can be stopped so as not to dazzle a driver of the preceding vehicle and / or the pedestrian. Advantageous effects of the exemplary embodiment will be described below. The vehicle light 10 according to the exemplary embodiment is configured to be a headlamp-type light which selectively provides low beam illumination and high beam illumination. The vehicle light 10 includes the light emitting unit 30 for forming the additional traffic light distribution pattern PA. The light emitting unit 30 comprises the transparent element 34 and the fifteen light emitting elements 32 (which serve as the second light source). The mask 20 blocks a portion of the light from the light emitting element 14 (which serves as the first light source). The mask 20 is formed by performing a surface treatment on the upper surface 34d of the transparent element 34.
    [0006] In addition, the transparent element 34 is configured so that light, which is incident from the light emitting elements 32, is emitted towards the projection lens 12 from the front end surfaces 34a and the 34dB emission windows of the upper surfaces 34d. This configuration provides the following advantageous effects. The light emitted from the front end surfaces 34a of the transparent element 34 may form a basic shape of the additional traffic light distribution pattern PA. In addition, the light emitted from the emitter windows 34dB of the transparent element 34 may form the additional light distribution pattern PA such that the additional light distribution pattern PA 30 extends to an area below the cut lines CL1, CL2 of the low beam light distribution pattern PL1. [0071] Thus, it is possible to prevent a gap between the PL1 crossing light light distribution pattern and the additional PA light distribution pattern from being formed. In addition, continuity between the low beam light distribution pattern PL1 and the additional light distribution pattern PA can be improved. Similarly, according to the exemplary embodiment, the vehicle light 10 can selectively perform the high beam illumination and the low beam illumination. The vehicle light 10 may also form the road light light distribution pattern PH1 with a smooth continuity between the low beam light distribution pattern PL1 and the additional light distribution pattern PA. In the transparent element 34 of the exemplary embodiment, the upper surfaces 34d comprise zones in front of the emission windows 34dB. The areas of the upper surfaces 34d are the forward reflective surfaces 34dA extending obliquely downwardly and rearwardly from the leading edges of the upper surfaces 34d (i.e., the leading edge 20a of the mask 20 ). Therefore, the reflective surfaces before 34dA reflect a portion of the light emitted from the emission windows 34dB, and the thus reflected light can be used to form the additional PA light distribution pattern. Thus, the continuity between the crosslamp light distribution pattern PL1 and the additional light distribution pattern PA can be further improved. On the other hand, in the exemplary embodiment, the transparent element 34 comprises the fifteen transparent segments 34A, 34B, 34C, 34D which are arranged in parallel in the right and left directions. The fifteen light emitting elements 32 are arranged so that the light emitted from the light emitting elements 32 is incident on the transparent segments 34A, 34B, 34C, 34D, respectively. The light emitting elements 32 are configured to be able to light individually. This configuration provides the following advantageous effects. That is, the fifteen light emitting elements 32 can be simultaneously turned on to form the additional light distribution pattern PA. Thus, the road fire light distribution pattern PH1 can be formed. In addition, a portion of the fifteen light emitting elements 32 may be selectively ignited to form the additional light distribution pattern PAm. In the additional light distribution pattern PAm, part of the additional light distribution pattern PA is absent. As a result, it is possible to form the intermediate light distribution pattern PM1 having an intermediate shape between the low beam light distribution pattern PL1 and the street light light distribution pattern PH1. The above advantageous effects can be achieved by the projector-type optical system provided with the single projection lens 12. That is, the exemplary embodiment can form several types of lighting patterns, i.e. the additional light distribution patterns of the PA, PAm road light by means of a compact configuration. In the exemplary embodiment, the front end surfaces 34a and the emission windows 34dB of the transparent segments 34A, 34B, 34C, 34D extend in the vertical plane perpendicular to the optical axis. Ax. Alternatively, the front end surfaces 34a and the emission windows 34dB may extend in a direction that is inclined toward the forward and backward directions relative to the vertical plane perpendicular to the optical axis Ax. In the exemplary embodiment, the transparent element 34 comprises the fifteen transparent segments 34A, 34B, 34C, 34D. The number of transparent segments is not limited to this, but can be any desired number. In the exemplary embodiment, the projection lens 12 may be configured such that a rear focal point of an upper region of the projection lens 12 is below a point. focal rear other areas of the projection lens 12 than the upper zone of the projection lens 12.
    [0007] Alternatively, a front surface of the projection lens 12 may have a light scattering function. These configurations make it possible to form the additional light distribution pattern PA having a more uniform light intensity distribution at the cut lines CL1, CL2. An exemplary modification of the exemplary embodiment will be described. [0081] FIG. 6 illustrates a vehicle light 110 according to the modification example and corresponds to FIG. 4. As shown in FIG. 6, a basic configuration of the vehicle light 110 is similar to FIG. that of the vehicle light 10 according to the exemplary embodiment. However, a light emitting unit 130 is different from the light emitting unit 30 of the exemplary embodiment. That is, in a manner similar to the light emitting unit 30 of the exemplary embodiment, the light emitting unit 130 of 3024762 24 The modification example is configured to include a transparent element 134 and fifteen light-emitting elements 32. The transparent element 134 is disposed below the rear focal point F of the projection lens 12. The transmission elements of FIG. 32 light serve as the second source of light. The light emitted from the light-emitting elements 32 is incident on the transparent element 134. Unlike the exemplary embodiment 10, the transparent element 134 of the transmission unit 130 of the modification example is configured by a single transparent resin element (or a single glass element). In addition, the fifteen light emitting elements 32 are configured to be simultaneously turned on. The transparent element 134 of the modification example is configured as if the fifteen transparent segments 34A, 34B, 34C, 34D of the exemplary embodiment were integrated. A front end face 134a, a bottom face 134b, reflective surfaces 134c, an upper surface 134d, a reflective surface 134dA front, and a transmission window 134dB of the transparent member 134 are formed contiguously. The fifteen light emitting elements 32 are arranged in the same positions as those of the exemplary embodiment. FIG. 7 is a view illustrating a PH2 road light distribution pattern formed on the virtual vertical screen by illuminated light toward the front of the vehicle light 110. In FIG. PH2 road light distribution pattern is designed to be seen through. The traffic light light distribution pattern PH2 is a combined distribution pattern, i.e. a combination of a PL2 dipped beam light distribution pattern and a pattern. 5 additional traffic light distribution PB. The crosslamp light distribution pattern PL2 is identical to the crosslamp light distribution pattern PL1 of the exemplary embodiment. The additional light distribution pattern PB is a light distribution pattern formed by simultaneously turning on the fifteen light emitting elements 32 of the light emitting unit 130. The additional light distribution pattern PB 15 is a laterally elongated light distribution pattern that extends around and above the cut lines CL1, CL2. [0091] In a similar manner to the additional light distribution pattern PA of the exemplary embodiment, the additional light distribution pattern PB is formed to extend above and below the clipping CL1, CL2. An upper edge of the additional light distribution pattern PB extends in the horizontal direction to be well above the cut lines CL1, CL2. A lower edge of the additional light distribution pattern PB is at a distance below the break lines CL1, CL2. [0092] A portion, above the cleavage lines CL1, CL2, of the additional light distribution pattern PB is formed by the light emitted from the front end surface 134a of the transparent element 134. Part, below the cutoff lines CL1, CL2, the additional light distribution pattern PB is formed by the light emitted from the transmission window 134dB of the upper surface 134d. When the configuration of the modification example is used, the vehicle light 10 can selectively perform the low beam illumination and the high beam illumination. It is also possible to form the traffic light light distribution pattern PH2 with a regular continuity between the passing light light distribution pattern PL2 and the additional light distribution pattern PB. In the modification example, the light emitting unit 130 comprises the fifteen light emitting elements 32. The number of light emitting elements is not limited to this, but can be any desired number. In the modification example, the transparent element 134 of the light emitting unit 130 comprises the fifteen reflecting surfaces 134c which are arranged in parallel. Alternatively, reflective surfaces having another shape may be used. It should be noted that values given in the exemplary embodiment and the modification example are merely examples and that different other values can be used appropriately. The invention is not limited to the configurations of the exemplary embodiment and the modification example. Various other modified configurations may be adopted.
    权利要求:
    Claims (3)
    [0001]
    REVENDICATIONS1. A vehicle lamp (10) configured to be capable of selectively providing low beam illumination and high beam illumination, the vehicle lamp comprising: a projection lens (12); and a first light source (14) disposed at the rear of the projection lens (12), wherein light emitted from the first light source (14) is irradiated forwards through the projection lens ( 12), a mask (20) and a light emitting unit (30, 130) are arranged at the rear of the projection lens (12), the mask (20) blocks a portion of the light which is directed from the first light source (14) to the projection lens (12) to form a low beam light distribution pattern (PL1, PL2), the light emitting unit (30, 130) the light incident on the projection lens (12) to form an additional high beam light distribution pattern (PH1, PM1, PH2) in addition to the low beam light distribution pattern (PL1, PL2) ), the vehicle light (10) being characterized in that: the light-emitting unit (30, 130) comprises a second light source (32), and a transparent element (34, 134) comprising a front end surface (34a, 134a), light emitted by the second light source (32) being incident on the element transparent (34,134), the transparent element (34,134) is configured to emit light incident from the front end surface (34a, 134a), the mask (20) is configured to produce Surface treatment on an upper surface (34d, 134d) of the transparent element (34, 134), and an emission window (34dB, 134dB) is formed in the upper surface (34d, 134d) of the element transparent (34, 134) and at the rear of a leading edge of the upper surface (34d, 134d), and the transmitting window (34dB, 134dB) is configured to emit light, which is incident from the second light source (32) on the transparent element (34, 134) towards the projection lens (12). 15
    [0002]
    Vehicle light (10) according to claim 1, characterized in that the upper surface (34d, 134d) of the transparent element (34, 134) has an area in front of the emission window (34dB, 134dB) , and the area of the upper surface (34d, 134d) of the transparent member (34, 134) constitutes a front reflecting surface (34dA, 134dA) extending obliquely downward and rearward from the front edge of the upper surface (34d, 134d).
    [0003]
    Vehicle light (10) according to one of Claims 1 to 2, characterized in that the transparent element (34) has a plurality of transparent segments (34A, 34B, 34C, 34D) which are arranged in parallel in the right and left directions, the second light source (32) has a plurality of light emitting elements (32a) which are arranged in such a way that light emitted by the light emitting elements (32a) light (32a) is incident on the transparent segments (32A, 32B, 32C, 32D), respectively, and the plurality of light emitting elements (32a) are configured so that they are capable of to be lit individually.
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    同族专利:
    公开号 | 公开日
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    FR3024762B1|2019-05-03|
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    法律状态:
    2016-07-12| PLFP| Fee payment|Year of fee payment: 2 |
    2017-07-07| PLFP| Fee payment|Year of fee payment: 3 |
    2018-05-04| PLSC| Publication of the preliminary search report|Effective date: 20180504 |
    2018-07-13| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-15| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-15| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2014163370|2014-08-11|
    JP2014163370A|JP6448250B2|2014-08-11|2014-08-11|Vehicle lighting|
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