• 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 lamp (1) comprises a light source (11), a projection lens (45) in which light from the light source strikes a surface and light is emitted from the other surface, a light source a lens (40) to which the projection lens is attached and which extends to a side opposite to the direction of light emitted from the projection lens, and a base plate (30) disposed on the opposite side to a side of the lens holder to which the projection lens is attached and having an opening (30a) through which light from the light source passes. The base plate (30) has a light shielding portion (31) which is provided between the projection lens and the lens holder and extends to the projection lens, and the light shield portion. (31) is formed by folding a portion of the base plate.
    公开号:FR3040468A1
    申请号:FR1657923
    申请日:2016-08-25
    公开日:2017-03-03
    发明作者:Hiroki Matsumoto；Akinori Matsumoto
    申请人:Koito Manufacturing Co Ltd；
    IPC主号:
    专利说明:

    CONTEXT
    TECHNICAL AREA
    The present invention relates to a lamp.
    RELATED ART
    As a lamp, for example, a lamp is known which comprises a light source and a projection lens for transmitting light emitted from the light source to project the light at a desired location. This is for example a vehicle fire.
    In the following Patent Document 1, a technique relating to a vehicle headlight which is a type of vehicle light is shown. The vehicle headlamp disclosed in Patent Document 1 comprises a lens holder, a projection lens attached to the lens holder, a reflector, and a light source or the like. The light from the light source is reflected in the reflector and projected towards the projection lens. In this vehicle headlight, a light emitting diode (LED) is used as a light source. When the light-emitting diode is used as a light source, the amount of heat generated therefrom is reduced compared to a related art light source such as a halogen lamp or a discharge lamp. As a result, the lens holder or the projection lens may be made of a resin.
    [0004] Patent Document 1: Japanese Patent Publication Laid-open No. 2014-146463 [0005] When the lens holder and the projection lens consist of a resin as described above, a reduction weight and cost of manufacture of the lamp is obtained.
    ABSTRACT
    The present inventors have studied the possibility that the following phenomenon occurs. That is, the present inventors have studied the possibility that, when the lamp is used outdoors, sunlight arriving inside through the projection lens from the outside be condensed. on a portion of the lens holder made of a resin and, thus, the lens holder is damaged.
    From the results of the study above, the present inventors have found that damage to the lens holder due to sunlight can be suppressed when a light shielding portion prevents Sunlight is radiated to the lens holder is provided between the projection lens and the lens holder.
    [0008] Examples of embodiments of the invention provide a lamp in which damage to a lens holder due to sunlight is suppressed.
    [0009] A lamp according to an exemplary embodiment comprises: a light source; a projection lens in which light from the light source is incident on one surface and light is emitted from the other surface; a lens holder to which the projection lens is attached and which extends to a side opposite to the direction of light emitted from the projection lens; and a base plate disposed opposite to one side of the lens holder to which the projection lens is attached and having an opening through which light from the light source passes, wherein the base plate has a portion forming a light shield which is provided between the projection lens and the lens holder and which extends towards the projection lens, and the light shielding portion is formed by folding a portion of the base plate.
    When the light shielding portion is provided between the projection lens and the lens support as described above, at least a portion of the sunlight passing through the projection lens from the outside of the the lamp is not radiated towards the lens holder but is radiated towards the light shielding portion. As a result, damage to the lens holder due to sunlight is suppressed. In addition, since the light screen portion is formed by folding a portion of the base plate, an increase in the cost of manufacturing the lamp is avoided.
    The lamp may further comprise: a screen that stops a portion of the light from the light source and is attached to a side opposite to a side of the base plate where the projection lens is provided.
    When such a screen is provided, the light emitted from the light source is controlled and thus hits the projection lens. Therefore, the light emitted from the projection lens can be formed into a desired light distribution pattern. In addition, the relative position between the projection lens and the lens support is fixed and the relative position between the screen and the base plate is also fixed. Therefore, when the relative position between the base plate and the lens holder is fixed, the relative position between the projection lens and the screen is determined accurately. As a result, it is easy to accurately form a desired light distribution pattern.
    The screen can be molded using a mold. As described above, the screen serves to control light from the light source. In order to precisely form the light distribution pattern of the light emitted from the projection lens, it is necessary that the shape of the screen be accurate. When the screen is molded using a mold, the screen with a very precise shape can be obtained. However, the base plate and the screen can be molded in one piece using a mold. However, particularly when the screen requiring precision is molded using a mold and the base plate is formed from sheet metal or the like, an increase in the manufacturing cost of the lamp is suppressed.
    An attachment portion at which the screen and the base plate are attached to each other may be located in a direction perpendicular to a fold line created when the screen portion to the light is formed by folding a portion of the base plate. Since the light screen portion is formed by folding a portion of the base plate, in the direction perpendicular to the fold line created at the time of formation of the screen portion to the light, the bending stiffness in the direction parallel to the fold line is increased. Therefore, since the screen and the base plate are attached to each other in the position as described above, the deformation of the base plate is suppressed by a force applied to the plate. base when the screen and the base plate are attached to each other. As a result, a positional deviation of the screen is avoided.
    The screen may comprise a portion of radiation to which the light emitted from the light source is radiated by being reflected in the projection lens, and the radiation portion prevents at least a portion of the light radiated by being reflected in the projection lens does not reach the projection lens again.
    When the light emitted from the light source is radiated towards the screen by being reflected in the projection lens, and then is again transmitted through the projection lens by being reflected in the screen, there is a possibility that the light is radiated to an undesired place. As described above, since at least a portion of the light radiated to the screen is prevented from reaching the projection lens again, undesired light is prevented from being emitted from the projection lens. projection.
    The radiation portion may extend in a direction in which at least a portion of the light radiated by being reflected in the projection lens is reflected so that it does not reach the lens again. projection.
    Since it is easy to manufacture the screen having such a shape, it is possible to avoid unwanted light being emitted from the projection lens, while suppressing an increase in the manufacturing cost of the screen. lamp.
    As described above, according to the present invention, there is provided a lamp in which damage to a lens holder due to sunlight is suppressed.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 is a sectional view schematically showing a configuration of a lamp according to an embodiment of the present invention.
    [0020] Figure 2 is a perspective view showing a lamp unit.
    Figure 3 is an exploded perspective view showing elements constituting the lamp unit.
    Figure 4 is an exploded perspective view showing a base plate and a screen.
    FIG. 5 is a perspective view of the base plate, as seen from a different direction of FIG. 4.
    Fig. 6 is an enlarged perspective view showing a portion VI of the base plate shown in Fig. 5.
    Fig. 7 is a view showing a section of some elements constituting the lamp unit and an example of an optical path of light emitted from a light source.
    Figure 8 is a view showing a section of the screen.
    DETAILED DESCRIPTION
    [0027] Hereinafter, the exemplary embodiment of a lamp according to the present invention will be described in detail with reference to the drawings. However, the scale or size ratios or the like of the respective elements on each drawing may be different from the actual ratios.
    Figure 1 is a sectional view schematically showing a configuration of a lamp according to an embodiment of the present invention. A vehicle headlamp as an example of the lamp is shown in Fig. 1. A vehicle headlight 1 shown in Fig. 1 comprises a lamp unit 2 and an outer housing 3 for accommodating the lamp unit 2. Ci after these components constituting the vehicle headlight 1 will be described in detail.
    Outer casing 3 [0029] The outer casing 3 comprises a lamp housing 4 and a front cover 5. A lamp unit 2 is housed in a lamp chamber 3a which is defined by the lamp housing 4 and the front cover 5. The lamp housing 4 has an opening on the side towards which light from a light source 11 is emitted (described later). The front cover 5 is arranged to close the opening of the lamp housing 4. The front cover 5 is made of a translucent material and the light emitted from the light source 11 is transmitted through the front cover 5 In addition, the lamp housing 4 has an opening 4a. The opening 4a is used at the time of replacement of the components of the lamp unit 2. Then, the outer casing 3 further comprises a rear cover 6 to close the opening 4a of the lamp housing 4.
    Lamp unit 2 [0030] Fig. 2 is a perspective view showing the lamp unit 2. In addition, Fig. 3 is an exploded perspective view showing elements constituting the lamp unit 2. As shown in Figs. 1 to 3, the lamp unit 2 comprises, as main components, a light source unit 10, a reflector 20, a base plate 30, a screen 35, a lens holder 40 and a projection lens 45.
    Light Source Unit [0031] The light source unit 10 comprises the light source 11, an emission control circuit 12, a heat sink 13 and a cooling fan 15. In the vehicle headlight 1 of the present embodiment, the light source 11 is an LED. The emission control circuit 12 controls the light emission from the light source 11. The heat sink 13 has a base 13a and a plurality of heat radiating fins 13b. The base 13a is a plate-shaped element. The light source 11 and the emission control circuit 12 are provided on one side of the base 13a and the heat radiating fins 13b are provided on the other side of the base 13a. In addition, the cooling fan 15 is disposed on the side where the heat radiating fins 13b of the heat sink 13 are provided. The heat emitted from the light source 11 and the emission control circuit 12 is transmitted to the heat radiating fins 13b from the base 13a of the heat sink 13. The heat radiating fins 13b are cooled by the cooling fan 15. In this way, the heat is emitted efficiently from the light source unit 10. Reflector 20 [0032] The reflector 20 is provided to cover the light source 11 and is fixed to the light source unit 10 by screws 24. In addition, the reflector 20 has a reflecting surface 20a on the side facing the light source 11. The reflecting surface 20a is a substantially ellipsoidal curved surface in which the center of the light light emission from the light source 11 is a first focus. At least a portion of the light emitted from the light source 11 is reflected to the projection lens 45 by the reflecting surface 20a.
    Projection lens 45 [0033] The light emitted from the light source 11 is reflected by the reflecting surface 20a as described above. Then, light hits a surface 45b of the projection lens 45 (i.e., the light is incident on that surface 45b) and is emitted from the other surface 45a thereof. The projection lens 45 is an aspherical planoconvex lens. The incident surface 45b struck by the light from the light source 11 has a planar shape, and the emission surface 45a from which the light from the light source 11 is emitted has a convex surface shape. curved in a direction of light emission. In addition, the projection lens 45 has a rim portion 46 at its outer periphery. Then, the projection lens 45 projects, as an inverted image, a light source image formed on a rear focal plane which is a focal plane having a back focus. Therefore, when the screen 35 (described later) is disposed on the rear focal plane, the light with the light distribution pattern corresponding to the shape of the screen 35 is emitted from the projection lens 45.
    Lens holder 40 [0034] The lens holder 40 is an element for supporting the projection lens 45. The flange portion 46 of the projection lens 45 is attached to the lens holder 40. As described above, the source 11 is an LED, and thus, the amount of heat generated from the light source 11 is reduced, compared to a halogen lamp or a discharge lamp or the like. Therefore, the projection lens 45 and the lens holder 40 may be made of a resin such as polycarbonate. In the vehicle headlamp 1 of the present embodiment, the projection lens 45 and the lens holder 40 are made of a resin. When the projection lens 45 and the lens holder 40 are made of a resin, the projection lens 45 and the lens holder 40 can be fixed by welding. In addition, when the projection lens 45 and the lens holder 40 are made of a resin, it is possible to reduce the weight of the vehicle headlight 1 and reduce the manufacturing cost thereof.
    The lens holder 40 has a cylindrical portion 41 provided on the side of the projection lens 45 and a pair of leg portions 42 provided on the side of the light source 11. The two leg portions 42 are spaced in a horizontal direction. Only one of the pair of leg portions 42 is shown in Figures 1 to 3. The cylindrical portion 41 is a hollow member whose shape has the appearance of a truncated cone. The cylindrical portion 41 extends in such a manner that an inside diameter and an outside diameter widen towards the opposite side to the direction of the light emitted from the projection lens 45. An end portion of the cylindrical portion 41 on the projection lens side 45 is welded to the flange portion 46 of the projection lens 45 as described above. In addition, the pair of leg portions 42 is a portion which is formed continuously with the cylindrical portion 41. The two leg portions 42 extend in such a manner that a gap between the leg portions 42 becomes wider towards the side opposite the direction of the light emitted from the projection lens 45. A rim portion 43 is formed at an end portion of each of the pair of leg portions 42. The flange portions 43 are attached to the light source unit 10 by screws 44.
    Base Plate 30 and Screen [0036] FIG. 4 is an exploded perspective view showing the base plate 30 and the screen 35. FIG. 5 is a perspective view of the base plate 30 as seen in FIG. a direction different from FIG. 4. FIG. 6 is an enlarged perspective view showing a portion VI of the base plate 30 shown in FIG.
    The base plate 30 is fixed to the light source unit 10 by screws 34, 44 and disposed between the lens holder 40 and the light source unit 10. That is to say, that the base plate 30 is disposed on the opposite side to the side of the lens holder 40 to which the projection lens 45 is attached.
    The base plate 30 has an opening 30a through which the light emitted from the light source 11 passes. The light emitted from the light source 11 passes through the opening 30a of the base plate 30, and then strikes the projection lens 45.
    In addition, the base plate 30 has a plate-shaped light-shield portion 31 which is formed by folding a portion of the base plate 30. The light-shielding portion 31 is provided between the projection lens 45 and lens holder 40 (that is, the light shield portion 31 is positioned in a space defined by the projection surface 45b of the projection lens 45 and an inner surface of the lens holder 40 ) and extends to the projection lens 45. More specifically, two light shielding portions 31 are arranged side by side in the horizontal direction. Each of the light shield portions 31 is provided between each of the pair of leg portions 42 of the lens holder 40 and the projection lens 45 (i.e., each of the light shield portions 31 is positioned in a space defined by an inner surface of one of the leg portions 42 of the lens holder 40 and the projection surface 45b of the projection lens 45) and extends toward the projection lens 45. When the light 31 are provided in this manner, at least a portion of the sunlight passing through the projection lens 45 from outside the vehicle headlamp 1 is not radiated to the leg portions 42 of the lens holder 40, but is radiated towards the light shielding portions 31.
    As a result, damage to the lens holder 40 due to sunlight is suppressed. For example, even when a focus of sunlight passing through the projection lens 45 is formed on the lens holder 40, the light shielding portions 31 prevent sunlight from being radiated to the focus, suppressing light. this causes damage to the lens holder 40.
    In addition, the light shield portions 31 are formed not by attaching a separate member to the base plate 30, but by folding a portion of the base plate 30. Therefore, an increase in the cost of manufacture of the vehicle headlight 1 is deleted.
    However, the light shielding portions 31 are spaced apart from the lens holder 40. When the light shielding portions 31 and the lens holder 40 are spaced apart from each other, the heat applied to the screen portions in the light 31 by the sunlight is hardly transmitted to the lens holder 40. Therefore, the damage of the lens holder 40 by heat is more easily suppressed.
    The light shielding portions 31 may be configured so that sunlight passing in from the outside of the lamp unit 2 through the projection lens 45 is not radiated. to the lens holder 40. For example, the light shield portions 31 may be formed by folding a portion of the base plate 30 at a right angle or may be formed along the inner surface of the leg portions 42 of the lens holder 40.
    In addition, the base plate 30 has a mounting portion 32 for mounting the lamp unit 2 on the lamp housing 4. The mounting portion 32 consists of a through hole formed at a position at which the base plate 30 is not covered by other elements constituting the lamp unit 2, when looking at the lamp unit 2 from the side of the projection lens 45. Since one screw (not shown) passing through the mounting portion 32 is screwed into a screw hole (not shown) formed in the lamp housing 4, the base plate 30 is secured being held between a head portion of the screw and the lamp housing 4 and thus the lamp unit 2 is fixed to the lamp housing 4.
    The material constituting the base plate 30 is not particularly limited. However, since the base plate 30 is provided with the light shielding portions 31 for receiving sunlight, the base plate 30 is preferably made of a heat resistant material such as a metal.
    Next, the screen 35 is described. The screen 35 is an element for stopping a portion of the light from the light source 11. The screen 35 is attached to the side of the base plate 30 opposite the side where the projection lens 45 is disposed. The light emitted from the light source 11 strikes the projection lens 45 being controlled by the screen 35. In this way, the light emitted from the projection lens 45 can be formed into a pattern of distribution. desired light. The light emitted from the light source 11 is reflected by the reflector 20 and a part thereof is radiated towards the screen 35. Part of the light radiated towards the screen 35 does not strike the projection lens 45 because it is stopped by the screen 35. In addition, some other part of the light radiated towards the screen 35 strikes the projection lens 45 by being reflected by the screen 35. At this time, when the screen 35 has a custom shape for a desired light distribution pattern, a desired cut line is formed or a signal is formed. In this way, the light strikes the projection lens 45 so as to form a desired light distribution pattern. Accordingly, various light distribution patterns can be formed simply by appropriately modifying the shape of the screen 35.
    As described above, the screen 35 serves to control the light that is emitted from the light source 11 and strikes the projection lens 45. In order to accurately form the light distribution pattern of the light emitted from the projection lens 45, it is preferable that the shape of the screen 35 is accurate. Therefore, the screen 35 is preferably molded using a mold. In particular, the screen 35 is preferably molded by die casting of aluminum. When the screen 35 is molded using a mold, the screen 35 with a very precise shape can be obtained. However, the base plate 30 and the screen 35 can be molded in one piece using a mold. However, particularly when the precision requiring screen is molded using a mold and the base plate 30 is formed from sheet metal or the like, an increase in the manufacturing cost of the vehicle headlamp 1 is avoided.
    As described above, the projection lens 45 and the lens holder 40 are attached to each other, and the screen 35 and the base plate 30 are also attached to each other. other. In addition, the base plate 30 is secured being held between the lens holder 40 and the light source unit 10. Therefore, the base plate 30 and the lens holder 40 are also attached to each other. the other, and thus a relative position between the projection lens 45 and the screen 35 is accurately determined. In addition, the base plate 30 and the reflector 20 are attached to the light source unit 10. Therefore, a relative position between the light source 11, the reflector 20, the screen 35 and the projection lens 45 is also accurately determined. Therefore, in accordance with the vehicle headlamp 1 of the present embodiment, the light striking the projection lens 45 through the screen 35 from the light source 11 propagates easily along a path desired and it is easy to accurately form a desired light distribution pattern.
    A method of fixing the screen 35 and the base plate 30 to one another is not particularly limited. For example, the screen 35 and the base plate 30 are fixed by matting or screwing. An attachment portion 36 at which the screen 35 and the base plate 30 are attached to each other is positioned in the direction perpendicular to a fold line 30b created when the light shield portion 31 is formed by folding a portion of the base plate 30. Since the light screen portion 31 is formed by folding a portion of the base plate 30, in the direction perpendicular to the fold line 30b created at the time from forming the screen portion to light, the bending stiffness in the direction parallel to the fold line 30b is increased. Therefore, since the screen 35 and the base plate 30 are attached to each other at the position as described above, the deformation of the base plate 30 is suppressed by a force applied to the base plate 30 when the screen 35 and the base plate 30 are fixed to each other. Since the deformation of the base plate 30 is suppressed, a positional deviation of the screen 35 is avoided. Therefore, a desired light distribution pattern can be formed more easily and more accurately by the screen 35.
    However, in the vehicle headlamp 1 of the present embodiment, a bead 33 is formed at the origin of the light shielding portion 31, i.e., at a position where the fold line 30b is formed. When the bead 33 is formed in this manner, the deformation of the base plate 30 is more easily avoided when the screen 35 and the base plate 30 are attached to each other. As a result, the positional deviation of the screen 35 is more easily suppressed and a desired light distribution pattern can be more easily and accurately formed by the screen 35.
    In addition, the screen 35 has a radiation portion 37 to which the light emitted from the light source 11 is radiated by being reflected in the projection lens 45. Now, the radiation portion 37 is described 7 is a view showing a section of some elements constituting the lamp unit 2 and an example of an optical path of the light emitted from the light source 11. An example the optical path is indicated by an arrow in FIG. 7. In addition, FIG. 8 is a view showing a section of the screen 35.
    Most of the light, which is emitted from the light source 11 and reaches the incident surface 45b of the projection lens 45 by being reflected in the reflector 20, is emitted from the emission surface 45a. But, as shown in FIG. 7, a part of the light, which is emitted from the light source 11 and which reaches the incident surface 45b of the projection lens 45 by being reflected in the reflector 20, can be reflected back to the screen 35 by the bearing surface 45b. The portion of the light reflected by the incident surface 45b in this manner is radiated to the radiation portion 37 of the screen 35. The radiation portion 37 is configured such that at least a portion of the light radiated by being reflected in the bearing surface 45b can not reach the projection lens 45 again. Specifically, the radiation portion 37 is shaped to be inclined at a predetermined angle θ with respect to the bearing surface 45b. An interrupted line shown in FIG. 8 represents a plane parallel to the incidence surface 45b. When the radiation portion 37 is shaped to be inclined in this manner, at least a portion of the light radiated to the radiation portion 37 being reflected in the projection lens 45 is reflected in a direction in which the light is not reflected. not strike the projection lens 45. The tilt angle Θ of the radiation portion 37 with respect to the incident surface 45b can be appropriately modified according to a positional relationship between the projection lens 45 and the radiation portion 37, or the like. For example, the angle of inclination Θ can be about 10 °.
    When the light emitted from the light source 11 is radiated towards the screen 35 by being reflected in the projection lens 45, and is then again transmitted through the projection lens 45 by being reflected in the In screen 35, there is a possibility that the light is radiated to an undesired location. As described above, since at least a portion of the light radiated to the screen 35 is prevented from reaching the projection lens 45 again, the emission of unwanted light from the lens 45 is removed. In addition, it is easy to manufacture the screen 35 which has the radiation portion 37 inclined at the predetermined angle Θ with respect to the bearing surface 45b. Therefore, in accordance with the vehicle headlamp 1 of the present embodiment, it is possible to suppress the emission of unwanted light from the projection lens 45 while suppressing an increase in the manufacturing cost.
    [0053] Above, an illustrative embodiment of the present invention has been described as an example. However, the present invention is not limited to this configuration. For example, the configuration of the light shielding portion is not limited to the above example. The light shielding portion may be formed by folding a portion of the base plate and may be configured to suppress radiation of sunlight to the lens holder. Therefore, the shape, size, and installation position of the light shielding portion can be appropriately modified depending on the shape or the like of the lens holder.
    In addition, in the vehicle headlamp 1 of the above embodiment, an example where the screen 35 is attached to the base plate 30 has been described. However, the lamp of the present invention is not limited to such an example. The screen may be arranged at a position to control the light distribution pattern of light that is emitted from the light source and is then emitted from the projection lens through the light source. screen. The screen may not be attached to the base plate.
    In addition, in the vehicle headlamp 1 of the above embodiment, an example where the screen 35 is molded using a mold has been described. However, a method of manufacturing the screen is not particularly limited. Since the shape of the screen is accurate when the screen is molded using a mold as described above, it is desirable that the screen be molded using a mold.
    In addition, in the vehicle headlamp 1 of the above embodiment, as an example, the attachment portion 36 at which the screen 35 and the base plate 30 are attached to one another. to the other is located in a direction perpendicular to the fold line 30b. However, the position at which the screen and the base plate are attached to each other is not particularly limited. In the case where the fixing portion 36 is located in the direction perpendicular to the fold line 30b as described above, the deformation of the base plate 30 is avoided when the screen 35 is attached to the base plate 30 .
    In addition, the configuration of the radiation portion of the screen is not limited to the example described above. The radiation portion may be configured so that at least a portion of the light radiated by being reflected in the projection lens can not reach the projection lens again. That is, the radiation portion may extend in the direction in which at least a portion of the light radiated by being reflected in the projection lens is reflected so as not to reach the lens of the lens again. projection. The radiation portion may be configured such that a tilt direction or tilt angle is changed in the middle. In addition, the radiation portion may have a shape (such as a knurled shape) to irregularly reflect the radiated light or may be painted in a color to absorb light.
    In addition, the material constituting the projection lens and the lens holder is not limited to a resin. However, in the case where the lens holder is made of a resin or the like, which is weakly heat resistant, the effect of the present invention, i.e. the suppressing effect of the Damage to the lens holder due to sunlight can be obtained more remarkably. In addition, when the projection lens is also made of a resin, the projection lens can be easily attached, by welding, to the resin lens holder.
    In addition, the lamp of the present invention is not limited to the vehicle headlight. However, since it is an object of the present invention to suppress damage to the lens holder due to sunlight, the lamp of the present invention can be used outdoors. Therefore, the lamp of the present invention is preferably a lamp which, such as the headlamp of a vehicle, is used outdoors and subjected to the radiation of sunlight. As an example other than the vehicle headlight, a headlamp or the like can be illustrated.
    According to the present invention, there is provided a lamp in which damage to a lens holder due to sunlight is suppressed. The lamp is suitably used for a lamp used outdoors, such as a vehicle headlight.
    权利要求:
    Claims (8)
    [1" id="c-fr-0001]
    A lamp (1) comprising: a light source (11); a projection lens (45) in which light from the light source strikes a surface (45b) and light is emitted from the other surface (45a); a lens holder (40) to which the projection lens is attached and which extends to a side opposite to the direction of light emitted from the projection lens; and a base plate (30) disposed opposite to one side of the lens holder to which the projection lens is attached and having an opening (30a) through which light from the light source passes, wherein the plate base comprises a light shielding portion (31) which is provided between the projection lens and the lens holder and which extends towards the projection lens, and the light shielding portion (31) is formed by folding a part of the base plate.
    [2" id="c-fr-0002]
    The lamp of claim 1, further comprising: a screen (35) which stops some of the light from the light source (11) and which is attached to a side opposite to a side of the base plate ( 30) where the projection lens is provided.
    [3" id="c-fr-0003]
    The lamp of claim 2, wherein the screen (35) is molded using a mold.
    [4" id="c-fr-0004]
    4. A lamp according to claim 2 or 3, wherein an attachment portion (36) at which the screen (35) and the base plate (30) are attached to each other is located in a direction perpendicular to a fold line (30b) created when the light shield portion (31) is formed by folding a portion of the base plate (30).
    [5" id="c-fr-0005]
    5. Lamp according to any one of claims 2 to 4, wherein the screen (35) comprises a portion of radiation (37) to which the light emitted from the light source (11) is radiated by being reflected in the projection lens (45), and the radiation portion (37) prevents at least a portion of the light radiated from being reflected in the projection lens from reapplying the projection lens.
    [6" id="c-fr-0006]
    The lamp according to claim 5, wherein the radiation portion (37) extends in a direction in which at least a portion of the light radiated by being reflected in the projection lens (45) is reflected so as not to not reach the projection lens again.
    [7" id="c-fr-0007]
    A lamp as claimed in any one of claims 1 to 6, wherein the light screen portion (31) is formed by folding the portion of the base plate (30) at right angles.
    [8" id="c-fr-0008]
    The lamp of any one of claims 1 to 7, wherein the light shield portion (31) is formed along an interior surface of the lens holder (40).
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    FR3002308A1|2014-08-22|VEHICLE LIGHTING DEVICE
    EP2947380B1|2018-12-19|Light-emitting module with light-emitting diode and screen
    FR2932245A1|2009-12-11|LIGHTING MODULE FOR MOTOR VEHICLE PROJECTOR
    同族专利:
    公开号 | 公开日
    DE102016216031A1|2017-03-02|
    JP6595258B2|2019-10-23|
    JP2017045616A|2017-03-02|
    CN106482062A|2017-03-08|
    CN106482062B|2019-09-06|
    US20170059109A1|2017-03-02|
    US10125944B2|2018-11-13|
    FR3040468B1|2018-11-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3540130C1|1985-11-13|1987-04-02|Hella Kg Hueck & Co|Headlights for motor vehicles|
    DE10217785C1|2002-04-21|2003-10-16|Matthias Brand|Light distribution module for automobile headlamp has variable light stop provided as part of carrier attached to headlamp reflector and supporting setting drive|
    JP2006253098A|2005-03-14|2006-09-21|Koito Mfg Co Ltd|Vehicular headlamp|
    JP5414246B2|2008-11-19|2014-02-12|株式会社小糸製作所|Vehicle headlamp|
    FR2983279B1|2011-11-24|2015-08-21|Valeo Vision|OPAQUE AND MOBILE ELEMENT PREVENTING THE FOCUSING OF SOLAR RAYS IN A PROJECTOR|
    KR101460729B1|2012-05-02|2014-11-12|현대모비스 주식회사|Lamp apparatus for an automobile|
    JP5977111B2|2012-07-31|2016-08-24|株式会社小糸製作所|Vehicle headlamp|
    JP6147510B2|2013-01-28|2017-06-14|株式会社小糸製作所|Vehicle headlamp|
    CN203857382U|2014-05-23|2014-10-01|上海通用汽车有限公司|Vehicle lens-type headlamp decorative ring and lens-type headlamp|
    JP6510330B2|2015-06-10|2019-05-08|株式会社小糸製作所|Vehicle lighting system|CN108916797B|2017-03-31|2021-03-23|诚益光电科技股份有限公司|Car light device and shielding plate structure thereof|
    CN207364902U|2017-04-11|2018-05-15|法雷奥照明湖北技术中心有限公司|Light emitting module and the motor vehicles including the light emitting module|
    US10544915B2|2017-04-27|2020-01-28|Valeo North America, Inc.|Vehicle lamp assembly having an improved heat sink with light shield|
    JP2019046714A|2017-09-05|2019-03-22|株式会社小糸製作所|Lamp unit and vehicular lamp|
    EP3527875A1|2018-02-15|2019-08-21|ZKW Group GmbH|Motor vehicle headlamp with a burning lens sheet|
    JP2019149284A|2018-02-27|2019-09-05|株式会社小糸製作所|Optical unit|
    JP2019194947A|2018-05-01|2019-11-07|株式会社小糸製作所|Lamp unit|
    CN110985990A|2019-10-31|2020-04-10|江苏恒瑞车灯有限公司|Adjusting and fixing device for lens of combined headlamp and combined headlamp|
    法律状态:
    2017-07-07| PLFP| Fee payment|Year of fee payment: 2 |
    2018-05-25| PLSC| Search report ready|Effective date: 20180525 |
    2018-07-13| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-11| PLFP| Fee payment|Year of fee payment: 4 |
    2021-05-07| ST| Notification of lapse|Effective date: 20210405 |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2015167174|2015-08-26|
    JP2015167174A|JP6595258B2|2015-08-26|2015-08-26|Lamp|
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