JP2020095876A - Vehicular lighting fixture - Google Patents

Abstract

To efficiently reduce an effect of a laser light source on an optical component.SOLUTION: A vehicular lighting fixture comprises: a light source device including a laser light source; an optical component provided on a first side in an optical axis direction of the laser light source with respect to the light source device, and comprising an incident surface for light from the laser light source; a heat dissipating member provided on a second side opposite to the first side in the optical axis direction with respect to the light source device, thermally connected to the light source device, comprising a fin on the second side, and in which a vent hole allowing communication between the first side and the second side is formed; and an air blower provided on the second side with respect to the heat dissipating member, and communicating with a space between the laser light source and the optical component in the optical axis direction via the vent hole.SELECTED DRAWING: Figure 2B

Description

The present invention relates to a vehicle lamp.

Patent Document 1 discloses a vehicular lamp in which a low beam light distribution pattern is formed by a plurality of light source units having different light distribution characteristics, which uses a compound optical lens in which a shade and a reflecting mirror are integrally formed on the lens itself. ing.

Further, Patent Document 2 discloses a vehicular lamp in which a fan that blows air is provided on the back surface of a heat sink that is thermally connected to a light source.

JP, 2004-241349, A JP, 2012-212521, A

By the way, when a laser light source is used as the light source, the distance (gap) between the optical component and the laser light source tends to be shorter than when an LED (Light Emitting Diode) is used as the light source, and the It becomes difficult to reduce the influence (eg, melting loss) on the parts.

Therefore, in one aspect, the present invention aims to efficiently reduce the influence of a laser light source on an optical component.

In one aspect, a light source device including a laser light source,
An optical component that is provided on the first side in the optical axis direction of the laser light source with respect to the light source device and has an incident surface of light from the laser light source,
The first side is provided on the second side opposite to the first side in the optical axis direction with respect to the light source device, is thermally connected to the light source device, and has a fin on the second side. And a heat dissipation member having a ventilation hole for communicating the second side with the second side,
A vehicular lamp comprising: a blower provided on the second side with respect to the heat dissipation member, the blower communicating with the space between the laser light source and the optical component in the optical axis direction through the ventilation hole. Provided.

In one aspect, the present invention makes it possible to efficiently reduce the influence of a laser light source on optical components.

It is a top view of the vehicle provided with the vehicle lamp of this embodiment. It is a perspective view of the lamp unit of this embodiment. It is an exploded perspective view of the lamp unit of this embodiment. It is sectional drawing of the compound optical lens of this embodiment. It is a front view of a heat sink. It is a front view of the lamp unit of this embodiment. FIG. 6 is a vertical cross-sectional view of the lamp unit of the present embodiment taken along the line AA of FIG. 5. It is a longitudinal cross-sectional view of a lamp unit according to a comparative example.

Hereinafter, modes for carrying out the present invention (hereinafter, referred to as “embodiments”) will be described in detail with reference to the accompanying drawings.
The same elements are denoted by the same numbers or reference numerals throughout the description of the embodiments.

Further, in the embodiment and the drawings, unless otherwise specified, “front” and “rear” indicate “forward direction” and “reverse direction” of the vehicle 102, and “up”, “down”, and “reverse direction”, respectively. “Left” and “right” respectively indicate directions viewed from the driver who gets on the vehicle 102.
Needless to say, "upper" and "lower" are also "upper" and "lower" in the vertical direction, and "left" and "right" are also "left" and "right" in the horizontal direction.
Hereinafter, the front side (an example of the first side) of a certain member (or part) refers to the front side with respect to the member (or part), and similarly, the rear side (second part) of the certain member (or part). The example of the side refers to the rear side with respect to the member (or part).

FIG. 1 is a plan view of a vehicle 102 including the vehicle lamp of the present embodiment.
As shown in FIG. 1, the vehicular lamp of the present embodiment is a vehicular headlamp (101L, 101R) provided on each of the front side and the left side of the vehicle 102, and is hereinafter simply referred to as a vehicular lamp. To do.

The vehicle lamp of the present embodiment includes a housing (not shown) that is open to the front side of the vehicle and an outer lens (not shown) that is attached to the housing so as to cover the opening, and is formed of the housing and the outer lens. The lamp unit 1 (see FIG. 2A) and the like are arranged in the lamp chamber.

FIG. 2A is a perspective view of the lamp unit 1 of the present embodiment. FIG. 2B is an exploded perspective view of the lamp unit 1 of this embodiment. FIG. 3 is a cross-sectional view of the compound optical lens 31 of the present embodiment, and is a cross-sectional view taken along the lens optical axis Z and seen from the side surface in the vertical direction. FIG. 4 is a front view of the heat sink 10. In addition, in FIG. 3, the light emitting region 22</b>B of the light source 22 that is schematically illustrated is also illustrated.

As shown in FIGS. 2A to 4, the lamp unit 1 includes a heat sink 10 (an example of a heat dissipation member), a light source device 20 attached to the heat sink 10, and an optical control member 30 arranged on the front side of the light source device 20. , And a fan 50.

(Heat sink 10)
The heat sink 10 includes a base portion 11 (an example of a first mounting portion) on which the light source device 20 is disposed, a plurality of heat radiation fins 12 provided on the rear side of the base portion 11, and arranged in the vehicle width direction, and a vertical portion of the base portion 11. Positioning pins 11A and 11C that are provided on one side (the lower side in FIG. 2A) of the direction and that are spaced apart in the vehicle width direction and project toward the front side, a mounting portion 111, and a mounting portion 112 (an example of a second mounting portion) Is equipped with.

The base portion 11 is formed with a pair of screw screw holes 11B at a position spaced apart in the vertical direction on the center side in the vehicle width direction. A pair of screws N for fixing the light source device 20 described later are screwed and fixed. Further, the base portion 11 is provided with a pair of left and right positioning pins 11C.

Further, the heat sink 10 has a pair of left and right mounting portions 111 formed on the front side (the side where the light source device 20 is provided) and outside the base portion 11 in the vehicle width direction. A pair of left and right positioning pins 11A are provided, and a fastening member BT for fixing an optical control member 30 described later is screwed and fixed. The fastening member BT is, for example, a screw. Further, the heat sink 10 has mounting portions 112 formed at four corners on the rear side, and fastening members (not shown) for fixing the fan 50 are screwed and fixed to the mounting portions 112.

The radiating fins 12 are portions that increase the heat radiation efficiency by increasing the contact area with the outside air. The radiating fin 12 may be in the form of a pin, may be in the form of a straight straight fin, or may be in any shape. In the present embodiment, the radiating fins 12 are formed on the rear side of the heat sink 10 (on the side opposite to the side on which the light source device 20 is provided), and extend in the up-down direction in a manner arranged in a plurality in the left-right direction.

In the present embodiment, the heat sink 10 is the aluminum die-cast heat sink 10. However, the heat sink 10 is not limited to this, and may be made of metal or resin having high thermal conductivity.

In the present embodiment, as shown in FIG. 4, the heat sink 10 has ventilation holes 114 formed on both sides of the base portion 11 in the left-right direction. The ventilation hole 114 is a through hole that penetrates in the front-rear direction. That is, the ventilation hole 114 is a through hole that connects the front side and the rear side of the heat sink 10 to each other.

The ventilation holes 114 allow the air from the fan 50 described later to pass therethrough, and will be described later in a space 90 (see FIG. 3) between the light source device 20 and the optical control member 30 in the optical axis direction of the light source 22 (=lens optical axis Z). The fan 50 has a function of sending the wind (hereinafter, simply referred to as a "ventilation function").

The ventilation holes 114 may have any shape and size, and may be formed at any location, as long as the required ventilation function is ensured.

In the present embodiment, as an example, the ventilation holes 114 are provided side by side in the left-right direction (an example of a direction intersecting the optical axis direction), as shown in FIG. 4. Specifically, as shown in FIG. 4, the ventilation holes 114 are provided on both sides of the base portion 11 (two locations in total). That is, the left and right ventilation holes 114 are provided so that the light source device 20 is located between the ventilation holes 114 in the left-right direction when viewed in the optical axis direction. In this case, the wind can be guided from both the left and right sides of the light source device 20 to the front side of the heat sink 10, and the ventilation function can be efficiently enhanced.

Further, in the present embodiment, as an example, the ventilation hole 114 is in the form of a long hole that is long in the up-down direction as shown in FIG. 4, and is located on both sides of the light source device 20 when viewed in the optical axis direction. It extends all over in the vertical direction. In this case, the ventilation hole 114 can efficiently guide the wind to the space 90 or the like between the light source device 20 and the optical control member 30, and can enhance the ventilation function.

Further, in the present embodiment, as an example, the ventilation holes 114 are formed between the radiating fins 12 in the left-right direction (an example of a direction intersecting the optical axis direction). In this case, the radiation fin 12 and the ventilation hole 114 can be formed simultaneously. That is, since the ventilation holes 114 can be formed in the region where the heat radiation fins 12 are formed, a part of the wind (wind from the fan 50) that hits the heat radiation fins 12 can be guided to the front side of the heat sink 10 through the ventilation holes 114. ..

Further, in the present embodiment, as an example, the ventilation hole 114 is provided between the mounting portion 111 and the base portion 11 in the left-right direction. That is, the ventilation hole 114 is adjacent to the attachment portion 111 that is a connection portion between the optical control member 30 and the heat sink 10. In this case, air can be sent to the mounting portion 111, and the mounting portion 111 can protect the optical control member 30 that can receive heat from the heat sink 10. The cooling action of the air (wind) flowing through the ventilation holes 114 will be described in more detail later with reference to FIGS. 5 and 6.

(Light source device 20)
The light source device 20 includes a heat transfer member 21 and a light source 22 arranged on the heat transfer member 21.

In the present embodiment, the heat transfer member 21 uses a plate material made of aluminum having an outer shape larger than that of the light source 22, but the material is not limited to aluminum, and a metal or resin other than aluminum having high thermal conductivity is used. And so on.

Then, the heat transfer member 21 quickly diffuses the heat generated by the light source 22 to a wide range and efficiently transfers the heat to the heat sink 10 to enhance the cooling efficiency of the light source 22.

The light source 22 includes a substrate 22A having a light emitting region 22B that transmits light, and a light emitting chip (not shown) that is disposed on the back side of the substrate 22A and emits light for causing the light emitting region 22B to emit light. In the embodiment, the LD light source (laser light source) uses an LD chip (laser diode chip) as a light emitting chip.

Then, the light source device 20 is provided at a position corresponding to the pair of positioning holes 24</b>A through which the pair of left and right positioning pins 11</b>C provided in the base portion 11 are inserted, and the screw screw hole 11</b>B provided in the base portion 11. And a pair of screw holes 24B, and can be fixed to the heat sink 10 by the screw N while being positioned by the positioning pin 11C.

Although not shown, a connector connecting member for electrically connecting the light source 22 and an external connector is connected to the light source device 20, and one end side of electric wiring (not shown) electrically connects to the light source 22. The other end side of the electric wiring (not shown) is connected to the inside of the connector connecting member and electrically connected to the external connector.

(Optical control member 30)
The optical control member 30 includes a compound optical lens 31 that irradiates the light from the light source 22 to the front side, and a fixing portion 32 that fixes the compound optical lens 31 to the heat sink 10. The member 31 and the fixing portion 32 are members integrally formed of transparent resin (for example, acrylic resin or polycarbonate resin). The optical control member 30 may be made of glass.

As shown in FIG. 3, the compound optical lens 31 of the present embodiment includes an incident surface 31B on which the light from the light source 22 is incident, an exit surface 31A that irradiates the light incident from the incident surface 31B to the front side, and an incident surface. A shade portion 31C formed between 31B and the emission surface 31A is a lens integrally formed.

The shade portion 31C is formed so as to form a substantially triangular recess inside the composite optical lens 31 from the vertically lower side between the entrance surface 31B and the exit surface 31A of the composite optical lens 31. The position of the apex of the triangular recess is the top line 31CA that matches the shape of the cut-off line.

The compound optical lens 31 is formed on the upper side (vertical direction upper side) on the incident surface 31B side of the top line 31CA of the shade portion 31C, and forms the first light distribution pattern of the low-beam light distribution pattern incident from the incident surface 31B. A free-form semi-dome-shaped first reflector surface 31D that reflects the light L1 toward the exit surface 31A and a lower surface (vertical direction lower side) of the entrance surface 31B side than the top line 31CA, and from the entrance surface 31B. A second semi-dome-shaped second reflector surface 31E (total reflection surface) having a free-form curved surface that reflects the incident light L2 forming the condensing light distribution pattern of the low-beam light distribution pattern toward the emission surface 31A. In the present embodiment, the first light distribution pattern is a diffused light distribution pattern of a low beam light distribution pattern, and therefore may be hereinafter referred to as a first diffused light distribution pattern.

Further, the width in the vehicle width direction of the position where the first reflector surface 31D and the second reflector surface 31E are adjacent to each other is larger in the first reflector surface 31D, and the first diffused light distribution pattern of the low-beam light distribution pattern is excellent. To be able to form.

As described above, in the present embodiment, the single diffused optical lens 31 can form the first diffused light distribution pattern and the condensed light distribution pattern of the low-beam light distribution pattern, so that the lamp unit 1 for forming the low-beam light distribution pattern is provided. It is not necessary to provide many lamps, and the vehicular lamp can be downsized.

On the other hand, in the present embodiment, the incident surface 31B has a concave shape in which the entire shape is concave inside the compound optical lens 31, and the light L3 forming the second light distribution pattern of the low beam light distribution pattern is made incident on the center side. It has a convex surface 31BA protruding to the outside of the compound optical lens 31.

In the present embodiment, the second light distribution pattern is a medium diffusion light distribution pattern that is smaller than the first diffusion light distribution pattern of the low beam light distribution pattern.

The convex surface 31BA has a substantially rectangular outer shape (square shape), and is formed such that the front focus is located near the top line 31CA or near the top line 31CA, as shown in FIG.

Since the light source 22 is located on the rear side of the convex surface 31BA so that the center of the convex surface 31BA and the light emission center of the light source 22 are substantially aligned when viewed in the vehicle width direction and the vertical direction, the light incident from the convex surface 31BA is largely refracted. In this way, the light is gently condensed toward the top line 31CA, and further spreads gently from the front focus toward the emission surface 31A to form a good medium diffusion light distribution pattern.
More precisely, the convex surface 31BA condenses light in the vertical direction, but diffuses it so as to spread the light in the horizontal direction.

The fixing portion 32 includes a leg portion 32A extending to the outside on the left and right, and a base portion 32B for fixing that is provided so as to be connected to the leg portion 32A.

The base portion 32B is provided at a position corresponding to the pair of positioning holes 32BA through which the pair of left and right positioning pins 11A provided in the mounting portion 111 pass and the mounting portion 111 provided outside the base portion 11. It is provided with a pair of left and right screw holes 32BB, and is fixed to the heat sink 10 by the fastening member BT while being positioned by the positioning pin 11A.

In the present embodiment, the composite optical lens 31 is formed so as to obtain a desired light distribution, but the configuration itself of the composite optical lens 31 is arbitrary. The compound optical lenses 31 provided as a pair may have different configurations so as to obtain a desired light distribution as a whole, instead of being bilaterally symmetrical.
Although not shown, the optical control member 30 may include a cover. In this case, the cover opens the light exit surface 31A (see FIG. 3) of the compound optical lens 31 and the light entrance surface 31B (see FIG. 3) of the compound optical lens 31 so as not to be blocked, and It may be configured to cover the sides. The cover may be separate from the optical control member 30, and may be fastened to the heat sink 10 together with the optical control member 30 by the fastening member BT.

(Fan 50)
The fan 50 is an example of a blower, and operates, for example, electrically. The fan 50 is provided on the rear side of the heat sink 10. The fan 50 generates a forward air flow toward the heat radiation fins 12 of the heat sink 10. The fan 50 mainly has a function of applying heat to the heat radiation fins 12 of the heat sink 10 to accelerate heat radiation, and also generates a flow of air between the light source 22 and the optical control member 30 to generate a flow of air from the light source 22. It has a function of reducing the influence of heat or energy on the optical control member 30 (hereinafter, also referred to as “lens heat protection function”). Hereinafter, unless otherwise specified, the air (wind) flow in the description is a flow formed by the fan 50.

In the present embodiment, as an example, the fan 50 is provided in such a manner that the rotation axis of the blade 52 is substantially aligned with the optical axis direction of the light source 22. However, the fan 50 may be provided such that the rotation axis of the blade 52 is offset with respect to the optical axis direction of the light source 22. Further, the fan 50 may be provided in such a manner that the rotation axis of the blade 52 is slightly inclined in the optical axis direction of the light source 22.

The fan 50 may always operate in the lighting state of the lamp unit 1, or may operate in the lighting state of the lamp unit 1 when a predetermined operation condition is satisfied.

(Action, motion, etc.)
Next, the operation of the fan 50 and the ventilation hole 114 according to the present embodiment will be described with reference to FIGS. 5 to 7. FIG. 5 is a front view of the lamp unit 1 of the present embodiment. FIG. 6 is a vertical cross-sectional view of the lamp unit 1 of the present embodiment taken along the line AA of FIG. FIG. 7 is a vertical sectional view of a lamp unit 1A according to a comparative example. 5 and 6, the flow of air resulting from the operation of the fan 50 is schematically shown by the dotted arrows R1, R2, R3, and the heat flow is schematically shown by the thick arrows R20, R21. .. Similarly, in FIG. 7, the flow of air resulting from the operation of the fan 50 is schematically shown by a dotted arrow R1 and the flow of heat is schematically shown by a thick arrow R30.

The lamp unit 1A according to the comparative example is different from the lamp unit 1 according to the present embodiment in that the heat sink 10 is replaced with the heat sink 10A. The heat sink 10A of the lamp unit 1A according to the comparative example is different from the heat sink 10 of the lamp unit 1 according to the present embodiment in that the ventilation hole 114 is not provided.

In the comparative example, when the fan 50 operates as shown in FIG. 7, air flows toward the front side toward the heat radiation fins 12 as indicated by an arrow R1. The air hitting the radiating fins 12 removes heat from the radiating fins 12 and realizes cooling of the radiating fins 12.

This point is the same in the case of the present embodiment as well, and referring to FIG. 6, when the fan 50 operates, air flows toward the front side toward the heat radiation fins 12 as indicated by an arrow R1. The air hitting the radiating fins 12 removes heat from the radiating fins 12 and realizes cooling of the radiating fins 12. That is, as shown by arrows R20 and R21 in FIGS. 5 and 6, the heat from the light source device 20 is transmitted to the heat sink 10 via the heat transfer member 21, and the air contacting the heat sink 10 is rotated and released to the outside. To be done.

However, in the comparative example, since the ventilation hole 114 is not provided, the ventilation function realized in the present embodiment cannot be realized. That is, all the air flowing toward the heat radiation fins 12 only flows to the rear side of the heat sink 10 and does not flow to the front side of the heat sink 10.

On the other hand, in the present embodiment, a part of the wind toward the heat radiation fin 12 flows toward the front side of the heat sink 10, as indicated by an arrow R2. The air thus guided to the front side of the heat sink 10 flows into the space 90 between the optical control member 30 and the light source 22 (see arrow R3). At this time, the light source device 20 itself including the light source 22 is also cooled by direct contact with air (wind).

As shown by an arrow R3, when air flows into the space 90 between the optical control member 30 and the light source 22, the heat that can be accumulated in the space 90 moves to the outside of the space 90 together with the air (to the upper side of the space 90). Be moved. Thereby, the lens heat protection function is realized.

Further, referring to FIG. 6, when the air flows into the space 90 between the optical control member 30 and the light source 22, the air also flows around the mounting portion 111. As a result, the mounting portion 111 can be cooled.

By the way, in order to miniaturize the lamp unit 1, when an LD light source (laser light source) having a phosphor having an area smaller than that of an LED is used in order to miniaturize the optical system, the loss of the light source luminous flux is minimized. In order to suppress it, the distance between the LD light source (laser light source) and the optical component becomes a layout closer to that of the LED. That is, the distance Δ1 between the optical control member 30 and the light source 22 in the present embodiment (separation distance in the optical axis direction, see FIG. 3) is better when using the LD light source (laser light source) than when using the LED. Also tends to be shorter.

When the distance Δ1 between the optical control member 30 and the light source 22 is reduced, the light source 22 is likely to have an adverse effect on the optical control member 30 (for example, melting loss of the optical control member 30). Specifically, the light energy emitted from the light source 22 and the space temperature increase (that is, the temperature increase in the space 90) due to the heat transfer using the light source 22 as a heat source are significant. In this case, if the temperature of the space 90 exceeds the heat resistant temperature of the incident surface 31B of the optical control member 30, the optical control member 30 may be melted and damaged.

In this respect, in the comparative example, since the ventilation hole 114 is not provided as described above, it is difficult for the air flow to occur in the space 90 between the optical control member 30 and the light source 22, and the melting loss of the optical control member 30 occurs. There is a risk.

On the other hand, according to the present embodiment, as described above, the air is forced to flow from the fan 50 through the ventilation holes 114 toward the space 90 between the optical control member 30 and the light source 22. Therefore, the temperature rise in the space 90 can be reduced. As a result, it is possible to reduce the possibility that the temperature of the space 90 exceeds the heat resistant temperature of the incident surface 31B of the optical control member 30. Therefore, according to the present embodiment, even if the distance Δ1 between the optical control member 30 and the light source 22 is small, it is possible to reduce the possibility of melting damage of the optical control member 30.

Here, when the distance Δ1 between the optical control member 30 and the light source 22 becomes small, the optical control is caused due to heat conduction through a component such as the heat sink 10 between the optical control member 30 and the light source 22. The fixing portion 32 (that is, the vicinity of the screw hole 32BB) that is the attachment portion of the member 30 may exceed the heat resistant temperature of the material and may be melted. Further, when the fixing portion 32 is deformed by heat, the positional relationship between the heat sink 10 and the optical control member 30 changes, and accordingly, the positional relationship between the light source 22 attached to the heat sink 10 and the optical control member 30 changes. And the change in the positional relationship may affect the light distribution performance of the lamp unit 1. In particular, when an LD light source is used like the lamp unit 1, higher positional accuracy tends to be required between the light source 22 and the optical control member 30 than when an LED is used.

On the other hand, in the comparative example, since the ventilation hole 114 is not provided as described above, the air of the fan 50 cannot be guided to the front side to the optical control member 30, and the air from the fan 50 can be guided around the mounting portion 111. Can't be flushed. Therefore, the fixing portion 32 of the optical control member 30 is easily deformed and may be melted and damaged.

On the other hand, according to the present embodiment, as described above, the air can be flowed from the fan 50 around the mounting portion 111 via the ventilation holes 114. Therefore, the fixed portion 32 of the optical control member 30 can be cooled by the air blown by the fan 50. This can reduce the possibility that the fixing portion 32 of the optical control member 30 is deformed or melted. Therefore, according to the present embodiment, it is possible to effectively reduce the possibility that the light distribution performance of the lamp unit 1 is deteriorated due to the deformation of the fixing portion 32 due to heat.

Further, in the comparative example, since the heat sink 10A does not have the ventilation hole 114 as described above, as shown by an arrow R30 in FIG. 7, when the heat from the light source 22 is transmitted to the heat sink 10A, the heat sink 10A reaches the mounting portion 111. It is easy to understand.

On the other hand, according to the present embodiment, since the heat sink 10 includes the ventilation holes 114 as described above, it is difficult for the heat from the light source 22 to be transferred to the mounting portion 111. That is, since the ventilation holes 114 are provided in such a manner that the heat transfer path, which is a problem in the comparative example, is blocked, the heat transferred to the mounting portion 111 can be reduced. This can further reduce the possibility that the fixing portion 32 of the optical control member 30 is deformed or melted. Therefore, according to the present embodiment, it is possible to more effectively reduce the possibility that the light distribution performance of the lamp unit 1 is deteriorated due to the deformation of the fixing portion 32 due to heat.

Although the respective embodiments have been described in detail above, the present invention is not limited to the specific embodiments, and various modifications and changes can be made within the scope of the claims. It is also possible to combine all or a plurality of the constituent elements of the above-described embodiments.

For example, in the above-mentioned embodiment, the compound optical lens 31 is integrally molded, but it may be configured separately.

Further, in the above-described embodiment, the lamp unit 1 is realized as a unit including one light source device 20 (and one optical control member 30), but two or more light source devices 20 (and one optical control unit). It may be realized as a unit including the member 30). In this case, the heat sink 10 may be common to the two or more light source devices 20 (and one optical control member 30), and the fan 50 may also be the two or more light source devices 20 (and one optical control member 30). It may be common to the members 30).

1 Lamp Unit 10 Heat Sink 11 Base Part 11A Positioning Pin 11B Screw Threading Hole 11C Positioning Pin 12 Radiating Fin 20 Light Source Device 21 Heat Transfer Member 22 Light Source 22A Substrate 22B Light Emitting Area 24A Positioning Hole 24B Screw Hole 30 Optical Control Member 31 Complex Optical Lens 31B Incident surface 32 Fixing part 32A Leg part 32B Base part 32BA Positioning hole 32BB Screw hole 90 Space N screw Z Lens optical axis BT Fastening member 101L, 101R Vehicle headlight 102 Vehicle

Claims (5)

A light source device including a laser light source,
An optical component that is provided on the first side in the optical axis direction of the laser light source with respect to the light source device and has an incident surface of light from the laser light source,
The first side is provided on the second side opposite to the first side in the optical axis direction with respect to the light source device, is thermally connected to the light source device, and has a fin on the second side. And a heat dissipation member having a ventilation hole for communicating the second side with the second side,
A vehicular lamp comprising: a blower that is provided on the second side with respect to the heat dissipation member and that communicates with a space between the laser light source and the optical component in the optical axis direction via the ventilation hole. A plurality of the fins are provided side by side in a direction intersecting the optical axis direction,
The vehicular lamp according to claim 1, wherein the ventilation hole is located between the plurality of fins in a direction intersecting with the optical axis direction. A plurality of the ventilation holes are provided side by side in a direction intersecting the optical axis direction,
The vehicular lamp according to claim 1, wherein the light source device is located between the plurality of ventilation holes in a direction intersecting the optical axis direction. The heat dissipation member has a first attachment portion to which the light source device is attached, and a second attachment portion to which the optical component is attached,
The vehicle lighting device according to any one of claims 1 to 3, wherein the ventilation hole is located between the first mounting portion and the second mounting portion. The vehicular lamp according to claim 4, wherein the ventilation hole is adjacent to the mounting portion.

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