JP6736978B2 - Vehicle lighting - Google Patents

Description

The present invention relates to a vehicle lamp.

As a vehicular lamp mounted on a vehicle, a configuration including a plurality of light source units is known. As such a vehicle lamp, for example, a configuration including a light source unit that emits a low beam pattern and a light source unit that emits a high beam or ADB (Adaptive Device Beam) pattern is known (for example, Patent Document 1). reference).

JP2012-38609A

In a configuration including a plurality of light source units, a configuration that efficiently dissipates heat generated by the light source of each light source unit is required. Therefore, for example, a configuration in which a fan is provided for each light source unit is proposed. However, when a fan is arranged for each light source unit, a space corresponding to that is required, and the vehicular lamp becomes large.

The present invention has been made in view of the above, and an object of the present invention is to provide a vehicular lamp capable of increasing the heat dissipation efficiency of a plurality of light source units while saving space.

A vehicular lamp according to the present invention includes a first light source that emits light and a plurality of plate-shaped first fins that radiate heat generated by the first light source, and the light emitted from the first light source. A first light source unit for irradiating the first light source unit, a second light source arranged side by side on the first light source unit for emitting light, and a plurality of plate-shaped second fins for radiating heat generated by the second light source. A second light source unit that emits light emitted from the second light source, and a second light source unit that is arranged side by side on the opposite side of the second light source unit with respect to the first light source unit. An airflow supply unit that supplies an airflow toward one light source unit, wherein the plurality of first fins and the plurality of second fins are parallel to an airflow supply direction that is a direction in which the airflow is supplied. It is arranged at a position where at least some of them are overlapped with each other when viewed from the air flow supply direction.

In addition, in the above vehicle lighting device, the first light source unit and the second light source unit may be connected to each other.

Further, in the above vehicle lighting device, the airflow supply unit may be connected to the first light source unit.

Further, in the above vehicle lamp, the first light source and the second light source emit the light in directions orthogonal to each other, and the plurality of first fins and the plurality of second fins are orthogonal to each other. May be arranged.

Moreover, in the above vehicle lamp, the first light source unit may be a light source unit capable of dynamically adjusting and irradiating a high beam pattern.

In addition, the above vehicle lighting device allows a gas to flow inside and outside the housing and a housing that houses the first light source unit, the second light source unit, and the air flow supply unit, and restricts the flow of liquid. A breathing hole unit may be further provided, and the airflow supply unit may be arranged in the vicinity of the breathing hole unit.

Further, in the above vehicle lighting device, the first light source unit, the second light source unit, the air flow supply unit, and the breathing hole unit may be arranged in a straight line.

Further, in the above vehicle lamp, at least one of the plurality of first fins and the plurality of second fins may have a rib portion that directs the airflow from the airflow supply unit toward the light source.

A vehicular lamp according to the present invention includes a light source that emits light, a base portion having a first surface that supports the light source, and a light source that is disposed on a second surface of the base portion that is provided on the back side of the first surface. Having a plurality of plate-shaped fins for radiating the heat generated by the light source unit for irradiating the light emitted from the light source, and arranged side by side to the light source unit to direct an air flow toward the light source unit. An air flow supply unit for supplying, and a rib portion provided between at least two adjacent fins of the plurality of fins, and a rib portion for directing the air flow supplied between the two fins to the second surface side, A penetrating hole that is provided so as to penetrate the first surface and the second surface of the base portion and that allows the airflow directed to the second surface side by the rib portion to pass to the first surface side; And a guide portion that guides the airflow that has passed through the hole from the second surface side to the first surface side to the light source.

According to the present invention, it is possible to provide a vehicular lamp capable of improving the heat dissipation efficiency of a plurality of light source units while saving space.

FIG. 1 is a perspective view showing an example of a vehicle lamp according to the first embodiment. FIG. 2 is a diagram showing a state in which the vehicular lamp is viewed from the rear. FIG. 3 is an exploded perspective view showing an example of the first light source unit. FIG. 4 is a side sectional view showing an example of the second light source unit. FIG. 5 is a perspective view showing a positional relationship among the plurality of first fins, the plurality of second fins, and the air flow supply unit. FIG. 6 is a diagram showing an example of the vehicular lamp according to the second embodiment. FIG. 7 is a perspective view showing an example of a first light source unit in the vehicular lamp according to the third embodiment. FIG. 8 is a sectional view showing an example of the first light source unit. FIG. 9 is a sectional view showing an example of the first light source unit.

Hereinafter, an embodiment of a vehicular lamp according to the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment. In addition, constituent elements in the following embodiments include elements that can be easily replaced by those skilled in the art, or substantially the same elements.

In the following description, the front-back, top-bottom, and left-right directions are the directions when the vehicle headlights are attached to the vehicle arranged on a plane parallel to the horizontal plane, and when viewed from the front of the driver's seat. Indicates the direction at. Therefore, in this embodiment, the up-down direction is the vertical direction, and the front-back direction and the left-right direction are directions parallel to the horizontal plane (horizontal direction).

<First Embodiment>
FIG. 1 is a perspective view showing an example of a vehicular lamp 100 according to the first embodiment. FIG. 2 is a diagram showing a state in which the vehicle lamp 100 is viewed from the rear. As shown in FIGS. 1 and 2, the vehicular lamp 100 includes a first light source unit 10, a second light source unit 20, and an airflow supply unit 30.

In the present embodiment, the first light source unit 10 is, for example, an ADB (Adaptive Device Beam) unit. The first light source unit 10 dynamically adjusts an ADB pattern in which a high beam pattern is dynamically adjusted so as not to dazzle an oncoming vehicle or a preceding vehicle on the basis of an image of an image pickup device or the like mounted on a vehicle in a predetermined irradiation direction. Irradiate. In the present embodiment, the irradiation direction is, for example, the front of the vehicle.

The second light source unit 20 is a low beam unit that emits a low beam pattern in a predetermined irradiation direction. In the present embodiment, the irradiation direction is, for example, the front of the vehicle. The second light source units 20 are arranged side by side on the first light source unit 10. Here, the side of the first light source unit 10 is, for example, a direction intersecting or orthogonal to the irradiation direction of the ADB pattern. In the present embodiment, the side of the first light source unit 10 is, for example, the left side or the right side of the first light source unit 10.

The first light source unit 10 and the second light source unit 20 are integrally connected by a connection mechanism 40. The first light source unit 10 and the second light source unit 20 are not limited to the above-mentioned types of light source units, and may be other types of light source units such as a bi-function projector unit.

FIG. 3 is an exploded perspective view showing an example of the first light source unit 10. As shown in FIG. 3, the first light source unit 10 includes a substrate 11, a first light source 12, a reflector 13, a frame 14, a projection lens 15, a retainer 16, and a heat sink member 17. .. The substrate 11 is supported by the heat sink member 17, for example. The first light source 12 is mounted on the substrate 11. The substrate 11 has a predetermined circuit for supplying an electric signal to the first light source 12, a connector 11a connected to the circuit, and the like.

In the present embodiment, the first light source 12 is a semiconductor-type light source such as an LED, an OEL, or an OLED (organic EL). A plurality of first light sources 12 are provided, but one may be provided. The plurality of first light sources 12 are arranged, for example, at equal pitches in the left-right direction, but the present invention is not limited to this, and may not be equal pitches. The first light source 12 has a light emitting surface 12f. The light emitting surface 12f is directed to the front of the vehicle, for example. The first light source 12 emits light from the light emitting surface 12f toward the front of the vehicle so as to form a Lambertian distribution.

The reflector 13 is arranged below the first light source 12 in the vertical direction. The reflector 13 is fixed to the heat sink member 17 by a fixing member such as a screw 13a. The reflector 13 has a reflecting surface 13b. The reflecting surface 13b reflects the light from the first light source 12 toward the front of the vehicle. The reflector 13 is arranged with a gap between it and a first surface 18a of a base portion 18 described later.

The frame 14 houses the substrate 11, the first light source 12, and the reflector 13. The frame 14 is fixed to the heat sink member 17 by a fixing member such as a screw 16a described later. The projection lens 15 is arranged in front of the vehicle with respect to the first light source 12 and the reflector 13. The projection lens 15 is supported by the frame 14. The projection lens 15 irradiates the light emitted from the first light source 12 and the light reflected by the reflecting surface 13b in front of the vehicle.

The retainer 16 holds the projection lens 15 between itself and the frame 14. The retainer 16 is fixed to the heat sink member 17 by a fixing member such as a screw 16a. The screw 16a is configured to fix the retainer 16 and the frame 14 together to the heat sink member 17, but the invention is not limited to this, and the retainer 16 and the frame 14 are fixed by separate fixing members. It may be configured.

The heat sink member 17 radiates the heat generated by the first light source 12 to the outside. The heat sink member 17 has a base portion 18 and a plurality of first fins 19. The heat sink member 17 has a base portion 18 and a plurality of first fins 19 integrally formed. The heat sink member 17 can be manufactured by using, for example, die molding.

The base 18 is formed in a rectangular plate shape and is arranged perpendicular to the horizontal plane. The base 18 has a first surface 18a facing the front and a second surface 18b arranged on the back surface side of the first surface 18a. The first surface 18 a supports the substrate 11, the reflector 13, the frame 14, and the retainer 16. The second surface 18b faces rearward.

The plurality of first fins 19 are formed in, for example, a rectangular plate shape. The plurality of first fins 19 are provided on the second surface 18b of the base portion 18. The plurality of first fins 19 are provided rearward from the second surface 18b. In this way, the plurality of first fins 19 are provided in the direction opposite to the light emission direction of the first light source 12. The plurality of first fins 19 are parallel to the horizontal plane, and are arranged in the vertical direction side by side, for example, at equal pitches. In addition, the plurality of first fins 19 may not be arranged at equal pitches in the vertical direction. The space 19S surrounded by the second surface 18b of the base 18 and the plurality of first fins 19 is in a state where the left side, the right side, and the rear side are open.

FIG. 4 is a side sectional view showing an example of the second light source unit 20. As shown in FIG. 4, the second light source unit 20 includes a substrate 21, a second light source 22, a reflector 23, a projection lens 24, a shade 25, a holder 26, and a heat sink member 27. .. The substrate 21 is supported by the heat sink member 27, for example. The second light source 22 is mounted on the substrate 21. The substrate 21 has a predetermined circuit that supplies an electric signal to the second light source 22.

The second light source 22 is a semiconductor-type light source such as an LED, an OEL, or an OLED (organic EL) in the present embodiment. The second light source 22 has a light emitting surface 22f. The light emitting surface 22f is directed upward in the vertical direction, for example. The second light source 22 emits light from the light emitting surface 22f so as to form a Lambertian distribution. Therefore, the first light source 12 and the second light source 22 emit light in the directions orthogonal to each other.

The reflector 23 is arranged above the second light source 22 in the vertical direction. The reflector 23 is supported by, for example, the heat sink member 27 or the holder 26. The reflector 23 has a reflecting surface 23a. The reflecting surface 23a reflects the light from the second light source 22 to the front of the vehicle. The reflecting surface 23a may be, for example, a reflecting surface having a free-form surface based on an ellipse or a reflecting surface having a spheroidal surface.

The projection lens 24 is arranged in front of the vehicle with respect to the reflector 23. The projection lens 24 is supported by, for example, a holder 26. The projection lens 24 has a lens focus (not shown) and a lens axis (not shown). The lens focus of the projection lens 24 matches or almost matches the second reference focus of the reflector 23. The lens axis of the projection lens 24 coincides with or substantially coincides with the reference optical axis of the reflector 23. The projection lens 24 irradiates the front of the vehicle with the reflected light from the reflecting surface 23a and other than the reflected light shielded by the shade 25.

The shade 25 is arranged between the reflector 23 and the projection lens 24. The shade 25 is supported by, for example, a holder 26. The shade 25 shields a part of the light reflected by the reflector 23 and forms a cutoff line in the low beam pattern.

The heat sink member 27 radiates the heat generated by the second light source 22 to the outside. The heat sink member 27 has a base portion 28 and a plurality of second fins 29. The heat sink member 27 is integrally formed with a base portion 28 and a plurality of second fins 29. The heat sink member 27 can be manufactured by using, for example, die molding.

The base portion 28 supports the substrate 21 and the reflector 23. The second fin 29 is formed in a rectangular plate shape, for example. The plurality of second fins 29 are each perpendicular to the horizontal plane, and are arranged side by side in the front-rear direction, for example, at equal pitches. Note that the plurality of second fins 29 do not have to be arranged in the front-rear direction at equal pitches. The plurality of second fins 29 are provided downward from the base portion 28. In this way, the plurality of second fins 29 are provided in the direction opposite to the light emission direction of the second light source 22. The space 29S surrounded by the base portion 28 and the plurality of second fins 29 is in a state in which the left side, the right side, and the lower side are open.

Further, as shown in FIGS. 1 and 2, the airflow supply unit 30 is arranged side by side on the side opposite to the second light source unit 20 with respect to the first light source unit 10. The airflow supply unit 30 has a fan 31. The airflow supply unit 30 generates the airflow P by rotating the fan 31. In the airflow supply unit 30, the fan 31 is directed to the first light source unit 10 side, more specifically, the space 19S between the plurality of first fins 19. The airflow supply unit 30 supplies the airflow P toward the space 19S of the first light source unit 10 by the rotation of the fan 31. Therefore, the airflow P is supplied in a direction parallel to the left-right direction. Hereinafter, the direction in which the air flow P is supplied (the direction parallel to the left-right direction) is referred to as the air flow supply direction D1.

The airflow supply unit 30 is fixed to the heat sink member 17 of the first light source unit 10 by a fixing member (not shown) such as a screw. The position of the airflow supply unit 30 is adjusted in the up-down direction so that the airflow P is supplied to the space 19S on the back side of at least the plurality of first light sources 12 among the plurality of spaces 19S. With this arrangement, the airflow P is reliably supplied to the portion where the amount of heat generation is large, so that the heat radiation efficiency is improved.

FIG. 5 is a perspective view showing a positional relationship among the plurality of first fins 19, the plurality of second fins 29, and the air flow supply unit 30. In FIG. 5, in order to make it easier to determine the positional relationship, the illustration of the configuration other than the first fin 19, the second fin 29, and the air flow supply unit 30 is omitted. Further, in FIG. 5, the first fin 19 and the air flow supply unit 30 are shown with a space therebetween.

Further, in the first light source unit 10, the emission direction of light from the first light source 12 is forward, and the plurality of first fins 19 are arranged rearward from the base portion 18. On the other hand, in the second light source unit 20, the light emission direction of the second light source 22 is upward, and the plurality of second fins 29 are arranged downward from the base portion 28. Therefore, when the light emitting directions of the first light source 12 and the second light source 22 are orthogonal to each other, the plurality of first fins 19 and the plurality of second fins 29 are orthogonal to each other as shown in FIG. Is located in.

In the present embodiment, the plurality of first fins 19 and the plurality of second fins 29 are both arranged in parallel with the air flow supply direction D1. Further, when viewed from the airflow supply direction D1, the plurality of first fins 19 and the plurality of second fins 29 are arranged at positions where at least some of them overlap. Therefore, in the overlapping portion when viewed from the air flow supply direction D1, the space between the plurality of first fins 19 and the space between the plurality of second fins 29 are in a state of communicating in the left-right direction. There is.

Next, the operation of the vehicular lamp 100 configured as described above will be described. In the following description, it is assumed that the second light source unit 20 irradiates a low beam pattern in front of a vehicle (hereinafter referred to as an own vehicle) equipped with the vehicular lamp 100. In this state, for example, when one or more preceding vehicles and an oncoming vehicle are traveling in front of the own vehicle, the first light source unit 10 does not emit the ADB pattern and only the low beam pattern is emitted. It is illuminated in front of the vehicle.

Further, for example, when no preceding vehicle or an oncoming vehicle is traveling in front of the host vehicle, the first light source unit 10 irradiates the ADB pattern in front of the host vehicle. As a result, both the low beam pattern and the ADB pattern irradiate the front of the host vehicle. It should be noted that the first light source unit 10 is used when the preceding vehicle is running and the oncoming vehicle is not running, or when the preceding vehicle is not running and the oncoming vehicle is running, etc. It may be possible to individually irradiate a pattern of ADB depending on the case.

When the first light source unit 10 and the second light source unit 20 are operated as described above, the first light source 12 and the second light source 22 provided in the respective light source units generate heat. The heat generated in the first light source 12 and the second light source 22 is radiated from the first fin 19 and the second fin 29, respectively.

Further, the airflow supply unit 30 is used in order to enhance the heat radiation efficiency in the first light source unit 10 and the second light source unit 20. By operating the airflow supply unit 30, the fan 31 rotates and the airflow P is supplied to the airflow supply unit 30. As shown in FIGS. 2 and 5, the airflow P enters the space 19S between the plurality of first fins 19 and passes in the left-right direction, and then enters between the plurality of second fins 29. It passes between the plurality of second fins 29 in the left-right direction. That is, the airflow P supplied from the airflow supply unit 30 flows so as to pass through the spaces 19S between the plurality of first fins 19 and the spaces 29S between the plurality of second fins 29 in the left-right direction. Therefore, one air flow supply unit 30 supplies the air flow both between the plurality of first fins 19 (spaces 19S) and between the plurality of second fins 29 (spaces 29S).

As described above, in the vehicular lamp 100 according to the present embodiment, the plurality of first fins 19 and the plurality of second fins 29 are arranged parallel to the airflow supply direction D1 and viewed from the airflow supply direction D1. Therefore, the airflow P from the airflow supply unit 30 is supplied to both between the plurality of first fins 19 and between the plurality of second fins 29. Therefore, the heat radiation efficiency of the two light source units of the first light source unit 10 and the second light source unit 20 can be increased by one air flow supply unit 30. As a result, in the vehicular lamp 100, since it is not necessary to provide the airflow supply unit 30 for each light source unit, it is possible to improve the heat dissipation efficiency of the plurality of light source units while saving space.

Further, in the vehicular lamp 100 according to the present embodiment, since the first light source unit 10 and the second light source unit 20 are connected to each other, the positional relationship between the plurality of first fins 19 and the plurality of second fins 29 is displaced. Can be suppressed.

Further, in the vehicular lamp 100 according to the present embodiment, since the airflow supply unit 30 is connected to the first light source unit 10, the plurality of first fins 19, the plurality of second fins 29, and the airflow supply unit 30. It is possible to prevent the positional relationship between and.

Further, in the vehicular lamp 100 according to the present embodiment, the first light source 12 and the second light source 22 emit light in directions orthogonal to each other, and the plurality of first fins 19 and the plurality of second fins 29 are orthogonal to each other. Even in the case of being arranged, the airflow P from the airflow supply unit 30 is supplied to both the plurality of first fins 19 and the plurality of second fins 29. As a result, the heat radiation efficiency of the two light source units of the first light source unit 10 and the second light source unit 20 can be improved regardless of the directions in which the first light source 12 and the second light source 22 emit light.

In addition, the vehicular lamp 100 according to the present embodiment is configured such that, of the two light source units, the first light source unit 10 and the second light source unit 20, an air flow is generated to the side of the first light source unit 10, which is an ADB unit that generates a large amount of heat. The supply unit 30 is arranged. Therefore, the vehicle lamp 100 can efficiently dissipate heat from the plurality of light source units.

<Second Embodiment>
Next, a second embodiment of the present invention will be described. FIG. 6 is a diagram showing an example of the vehicular lamp 200 according to the second embodiment. As shown in FIG. 6, the vehicular lamp 200 includes a lamp housing (housing) 101, a first light source unit 10, a second light source unit 20, an air flow supply unit 30, and a breathing hole unit 102. ..

The lamp housing 101 houses the first light source unit 10, the second light source unit 20, and the air flow supply unit 30. The lamp housing 101 may house another vehicular lamp. The breathing hole unit 102 is provided in the lamp housing 101. The breathing hole unit 102 allows a gas to flow inside and outside the lamp housing 101 and regulates the flow of a liquid or the like.

In the vehicular lamp 200 according to the present embodiment, the airflow supply unit 30 is arranged near the breathing hole unit 102. For example, the airflow supply unit 30 is arranged at a position where the surface opposite to the surface from which the airflow P is discharged faces the breathing hole unit 102. With this arrangement, the gas intake side of the air flow supply unit 30 is arranged near the breathing hole unit 102. Therefore, the air flow P supplied from the air flow supply unit 30 is formed to include a large amount of gas introduced from the outside of the lamp housing 101.

Further, in the vehicular lamp 200 according to the present embodiment, the first light source unit 10, the second light source unit 20, the air flow supply unit 30, and the breathing hole unit 102 are arranged in a straight line. In the present embodiment, these four units are arranged side by side in a linear direction parallel to the airflow supply direction D1 in which the airflow P is supplied. With this arrangement, the airflow P flows in a linear direction from the breathing hole unit 102 to the airflow supply unit 30, the first light source unit 10, and the second light source unit 20. Therefore, the airflow P easily flows in the airflow supply direction D1. A breathing hole unit 102A having the same configuration as that of the breathing hole unit 102 moves the first light source unit 10, the second light source unit 20, and the air flow supply unit 30 in the air flow supply direction D1 with the breathing hole unit 102. It may be provided at a sandwiching position. That is, the breathing hole unit 102A may be provided at a position opposite to the breathing hole unit 102 in the air flow supply direction D1 with respect to the second light source unit 20. For example, the breathing hole unit 102A may be arranged on the extension of the airflow supply direction D1 with respect to the second light source unit 20. In this case, the breathing hole unit 102A can be arranged at the end of the lamp housing 101 on the side opposite to the breathing hole unit 102 in the airflow supply direction D1, as shown in FIG. 6, for example. It is not limited. In this way, by providing the breathing hole unit 102A between the breathing hole unit 102 and the first light source unit 10, the second light source unit 20, and the airflow supply unit 30 in the airflow supply direction D1, the airflow is generated. Since it becomes possible to control, the heat radiation effect is improved. Further, the breathing hole unit 102A can be arranged at a position lined up in a linear direction between the first light source unit 10, the second light source unit 20, the air flow supply unit 30, and the breathing hole unit 102. As a result, the airflow can be easily controlled so as to flow in a straight line direction, so that the heat dissipation effect is improved. The breathing hole unit 102A may be located at a position deviated from the linear direction. Further, the position of the breathing hole unit 102A is not limited to the position described above or the configuration shown in FIG. 6, and may be provided at another position.

<Third Embodiment>
Next, a third embodiment of the present invention will be described. FIG. 7 is a perspective view showing an example of the first light source unit 210 of the vehicular lamp 300 according to the third embodiment. As shown in FIG. 7, the first light source unit 210 includes a substrate 11, a first light source 12, a reflector 13, a frame 14, a projection lens 15, a retainer 16, and a heat sink member 217. .. In the third embodiment, the configuration of the heat sink member 217 of the first light source unit 210 is different from that of the first embodiment, and the other configurations are similar to those of the first embodiment. Hereinafter, differences from the first embodiment will be mainly described.

The heat sink member 217 has a base portion 218, a plurality of first fins 19, a rib portion 220, and a guide portion 221. 8 and 9 are cross-sectional views showing an example of the first light source unit 210. FIG. 8 is a view showing a cross section in a plane parallel to the horizontal plane and including the space 19S in which the rib portion 220 is arranged. FIG. 9 is a diagram showing a configuration along the AA cross section in FIG.

As shown in FIGS. 7 to 9, the base portion 218 is formed in a rectangular plate shape and is arranged perpendicular to the horizontal plane. The base 18 has a first surface 218a facing forward and a second surface 218b arranged on the back surface side of the first surface 218a. The first surface 218a supports the substrate 11, the reflector 13, the frame 14, and the retainer 16. The second surface 218b faces rearward. On the second surface 218b, a plurality of first fins 19 are arranged side by side at equal pitches in the vertical direction.

In addition, the base 218 has a through hole 218c. The through hole 218c penetrates the first surface 218a and the portion of the second surface 218b between the adjacent first fins 19 in the front-rear direction. The through hole 218c is a central portion in the left-right direction of the base portion 218, and is arranged below the substrate 11 in the vertical direction. More specifically, the through holes 218c are arranged below the plurality of first light sources 12 in the vertical direction. The size of the through hole 218c in the left-right direction is larger than the size of the plurality of first light sources 12 between the ends in the left-right direction.

The rib portion 220 is provided in the space 19S connected to the through hole 218c among the plurality of spaces 19S. The rib portion 220 has a rectangular plate shape and is arranged perpendicular to each of the second surface 218b and the first fin 19. The rib portion 220 is provided integrally with the base portion 218 and the first fin 19, and is arranged so as to close the space between the adjacent first fins 19. The front end of the rib 220 is connected to the edge of the base 218 that defines the through hole 218c. The rib portion 220 directs the airflow P flowing from the airflow supply unit 30 in the airflow supply direction D1 toward the front side of the second surface 218b, that is, the first light source 12 side. That is, the rib portion 220 changes the direction of the airflow P in the space 19S from the airflow supply direction D1 to the forward flow direction D2.

The guide portion 221 is provided on the first surface 218a of the base portion 218. The guide portion 221 guides the airflow P passing through the through hole 218c from the second surface 218b side to the first surface 218a side to the first light source 12. The guide portion 221 has a bottom portion 221a, a wall portion 221b, and a side portion 221c. The bottom portion 221a is formed so as to extend forward from the lower edge of the through hole 218c in the vertical direction. The bottom portion 221a is formed, for example, parallel to the horizontal plane. The bottom portion 221a suppresses the airflow P passing through the through hole 218c from coming out downward. The wall portion 221b extends vertically upward from the front end portion of the bottom portion 221a. The wall portion 221b directs the airflow P passing through the through hole 218c upward in the vertical direction. The side portion 221c is arranged on the side of the wall portion 221b. The side portion 221c suppresses the airflow P passing through the through hole 218c from coming out laterally, and directs the airflow P upward in the vertical direction. In this way, the guide portion 221 changes the direction of the air flow P passing through the through hole 218c from the flow guiding direction D2 to the upward guiding direction D3.

In the vehicular lamp 300 according to the present embodiment, in the first light source unit 210, the airflow P guided by the guide portion 221 in the guide direction D3 passes between the first surface 218a of the base portion 218 and the reflector 13, One light source 12 is supplied. As a result, the airflow P is directly supplied to the first light source 12, so that the heat radiation efficiency is improved.

In addition, in this embodiment, although the structure which provided the rib part 220 in the space 19S of the 1st light source unit 210 was mentioned as the example, it is not limited to this. For example, in the vehicle lamp, the rib portion may be provided in the space 29S of the second light source unit 20. In this case, the airflow P is directed to the base 28 side by the rib portion of the space 29S. Further, by forming the through hole in the base portion 28, the airflow P directed to the base portion 28 side can be guided to the substrate 21 side. Further, by providing the guide portion, the airflow P that has passed through the through hole and is guided to the substrate 21 side can be guided to the second light source 22.

The technical scope of the present invention is not limited to the above-described embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the first light source 12 and the second light source 22 emit light in directions orthogonal to each other, but the present invention is not limited to this. For example, the first light source 12 and the second light source 22 may be configured to emit light in mutually parallel directions, or emit light in other directions that are neither mutually orthogonal nor mutually parallel. It may be configured to.

Further, in the above embodiment, the case where the side of the first light source unit 10 is the left side or the right side of the first light source unit 10 has been described as an example, but the present invention is not limited to this. For example, the side of the first light source unit 10 may be a direction that is offset in the front-rear direction with respect to the left or right as long as it is a direction that intersects or is orthogonal to the irradiation direction of the ADB pattern. Further, the lateral direction of the first light source unit 10 is not limited to the direction parallel to the horizontal plane, and may be the direction inclined in the vertical direction with respect to the horizontal plane (for example, upward, downward, etc.).

Further, in each of the above embodiments, the first light source units 10 and 210 arranged on the side of the air flow supply unit 30 are ADB units, and the second light source unit 20 is a low beam unit, but the present invention is not limited to this. However, the first light source units 10 and 210 may be low beam units, and the second light source unit 20 may be an ADB unit.

10, 210 First light source unit 11, 21 Substrate 11a Connector 12 First light source 12f, 22f Light emitting surface 13, 23 Reflector 13a, 16a Screw 13b, 23a Reflective surface 14 Frame 15, 24 Projection lens 16 Retainer 17, 27, 217 Heat sink Members 18, 28, 218 Bases 18a, 218a First surface 18b, 218b Second surface 19 First fins 19S, 29S Space 20 Second light source unit 22 Second light source 25 Shade 26 Holder 29 Second fin 30 Airflow supply unit 31 Fan 40 Coupling mechanism 100, 200, 300 Vehicle lamp 101 Lamp housing 102, 102A Breathing hole unit 218c Through hole 220 Rib part 221 Guide part 221a Bottom part 221b Wall part 221c Side part D1 Air flow supply direction D2 Guide direction D3 Guide direction P Air flow

Claims (4)

A first light source that emits light forward in the front-rear direction when mounted on a vehicle; a first base portion that is plate-shaped and that is disposed orthogonal to the front-rear direction and that supports the first light source on the front surface in the front-rear direction; Jo a and first to have the first Fi down you dissipate heat generated by the first base wherein the longitudinal direction of the rear surface to the perpendicular to the first base portion and a plurality provided the first light source so as to be parallel to each other 1 possess a heat sink, and a first light source unit for irradiating the light emitted from the first light source in front of the front-rear direction,
A second light source, which is arranged side by side with the first light source unit and emits light upward in the vertical direction when mounted on a vehicle, and a second light source that is plate-shaped and is arranged in parallel with the plane orthogonal to the vertical direction. A plurality of second bases that support the second light source on the upper surface in the direction and a plurality of plate-shaped lower surfaces of the second base that are perpendicular to the second base and are parallel to each other; a second heat sink have a second Fi down you dissipate heat generated by the second light source, was closed, and the second light source unit for irradiating light emitted from the second light source in front of the front-rear direction,
An air flow supply unit that is arranged side by side on the side opposite to the second light source unit with respect to the first light source unit and that supplies an air flow toward the first light source unit,
Positions in which the plurality of first fins and the plurality of second fins are arranged in parallel to the airflow supply direction that is the direction in which the airflow is supplied, and at least partially overlap with each other when viewed from the airflow supply direction. It is located in,
The first light source unit and the second light source unit are connected to each other,
The airflow supply unit is connected to the first light source unit,
The plurality of the first fins and the plurality of the second fins are vehicle lamps that are arranged orthogonal to each other . The vehicle lamp according to claim 1, wherein the first light source unit is a light source unit capable of dynamically adjusting and irradiating a high beam pattern. A housing that houses the first light source unit, the second light source unit, and the airflow supply unit;
A breathable vent unit that allows gas to flow inside and outside the housing and that regulates the flow of liquid;
The air flow supply unit for a vehicle lamp according to claim 1 or claim 2 disposed in the vicinity of the ventilation hole unit. The vehicular lamp according to claim 3 , wherein the first light source unit, the second light source unit, the air flow supply unit, and the breathing hole unit are arranged side by side in a straight line direction.

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