Vehicular lighting fixture
The vehicle lamp design addresses installation limitations by integrating heat dissipation fins and airflow guidance, enhancing installation freedom and heat dissipation efficiency through continuous paths and efficient airflow distribution.
Patent Information
- Application Number
- JP2023122994
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-07-28
- Publication Date
- 2025-02-07
AI Technical Summary
Existing vehicle lamps face limitations in installing air blowers due to the protruding heat dissipation fins of the first and second light source units, restricting the freedom of installation.
The vehicle lamp design integrates a first and second light source unit with different base members and heat dissipation fins, where the second unit includes a third base member extending in the direction of the first unit's base member, allowing continuous heat dissipation paths and improved airflow guidance through bracketed guide portions.
This configuration enhances the freedom of installing air blowers by ensuring continuous heat dissipation paths and efficient airflow distribution, reducing heat retention and improving overall heat dissipation performance.
Smart Images

Figure 2025019395000001_ABST
Abstract
Description
[Technical field]
[0001] The present invention relates to a vehicle lamp. [Background technology]
[0002] Conventionally, a vehicle lamp including a first light source unit having a first light source that emits light forward, and a second light source unit having a second light source that emits light upward and emits light forward through a reflector has been proposed (see, for example, Patent Document 1). In this vehicle lamp, the first light source unit and the second light source unit are arranged adjacent to each other laterally. In the vehicle lamp, the first light source unit is of a direct type that emits light from the first light source directly forward, has the first light source mounted on the front surface of the base, and has a heat dissipation fin extending rearward from the rear surface of the base. In addition, the second light source unit is of a projector type that reflects light from the second light source forward with a reflector, has the second light source mounted on the upper surface of the base, and has a heat dissipation fin extending downward from the lower surface of the base. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Patent No. 6736978 Summary of the Invention [Problem to be solved by the invention]
[0004] Here, in the vehicle lamp described in Patent Document 1, the heat dissipation fins in the first light source unit protrude rearward from the base, and the heat dissipation fins in the second light source unit protrude downward from the base. Therefore, when installing a blower means for promoting heat dissipation, it can only be installed in a position where the airflow is appropriate for both the rearward protruding heat dissipation fins and the downward protruding heat dissipation fins, and the degree of freedom in installing the blower means was by no means high.
[0005] The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a vehicle lamp that allows greater freedom in installing a blowing means. [Means for solving the problem]
[0006] The vehicle lamp of the present disclosure is a vehicle lamp in which a first unit including a first light source that emits light in a first direction, a first base member that is a plate material for mounting the first light source, and a first heat dissipation fin are arranged in parallel with a second unit including a second light source that emits light in a second direction intersecting the first direction, a second base member that is a plate material for mounting the second light source, and a second heat dissipation fin, the second unit further including a third base member that is a plate material connected to the second base member and extending along the extension direction of the first base member, the first heat dissipation fin extending from the first base member in a direction opposite to the first direction, and the second heat dissipation fin extending from the third base member along the extension direction of the first heat dissipation fin. Effect of the Invention
[0007] According to the present disclosure, it is possible to provide a vehicle lamp that allows for greater freedom in installing a blowing means. [Brief description of the drawings]
[0008] [Figure 1] 1 is a front view showing a vehicle lamp according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a front perspective view showing a partial configuration of FIG. [Diagram 3] FIG. 3 is a front perspective view showing a partial configuration of FIG. 2. [Figure 4] FIG. 3 is a rear perspective view showing a partial configuration of FIG. 2. [Diagram 5] FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. [Figure 6] 3 is a perspective view showing the fan and the bracket shown in FIG. 2. [Figure 7] 6 is a cross-sectional view taken along line VI-VI of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009] The following describes a vehicle lamp according to an embodiment of the present disclosure, but the present invention is not limited to the embodiment and can be modified as appropriate without departing from the spirit of the present invention. In addition, in the embodiment, some configurations are omitted from the illustration and description, but it goes without saying that publicly known or well-known technologies are appropriately applied to the details of the omitted technologies within the scope of the content described below.
[0010] Fig. 1 is a front view showing a vehicle lamp according to this embodiment, and Fig. 2 is a front perspective view showing a part of the configuration shown in Fig. 1. In Fig. 1, for the sake of easy understanding, configurations such as an outer lens and a frame provided in front of the configuration shown in Fig. 1 are omitted.
[0011] The vehicle lamp 1 shown in Fig. 1 is, for example, a headlamp provided at the right front of a vehicle, and includes a first unit 10, a second unit 20, and a projection lens 2 provided in front of them. The vehicle lamp 1 is configured with the first unit 10 and the second unit 20 arranged side by side. The projection lens 2 receives light from a first light source (reference numeral 11 described later) of the first unit 10 and a second light source (reference numeral 21 described later) of the second unit 20, and emits the light so as to form a predetermined optical path.
[0012] As shown in FIG. 2, the first unit 10 is a lamp unit for forming a so-called high beam light distribution, and includes a circuit board CB1 on which a first light source 11 is mounted, a lens 12, and a first base member 13. The first light source 11 emits light forward of the vehicle (first direction). This first light source 11 is mounted on a circuit board CB1 that controls the light emission of the first light source 11. The circuit board CB1 is mounted on the first base member 13. The lens 12 is an optical lens for high beams provided in front of the first light source 11, and is fixed to the first base member 13 via the circuit board CB1 by a screw member or the like. The first base member 13 is a metal plate member for mounting the first light source 11. This first base member 13 is provided so that the normal direction of the plate member is forward.
[0013] In this first unit 10, the normal direction of the first base member 13 is forward, and the first light source 11 is mounted on the first base member 13 via the circuit board CB1. Therefore, the first unit 10 is configured as a direct-type lamp that emits light from the first light source 11 through the lens 12 toward the front of the vehicle.
[0014] The second unit 20 is a lamp unit for forming a so-called low-beam light distribution, and includes a circuit board CB2 on which a second light source 21 is mounted, a reflector 22, a shade 23, and a second base member 24. The second light source 21 emits light upward (a second direction intersecting with the first direction) of the vehicle. The second light source 21 is mounted on a circuit board CB2 that controls the emission of the second light source 21. The circuit board CB2 is mounted on the second base member 24. The reflector 22 has a reflective surface based on a spheroid on its inner surface, and is disposed so as to cover the upper side of the second light source 21 and with the open side of the spheroid facing the front of the vehicle. The shade 23 forms a cutoff line for low beam by a cut portion 23a that cuts a part of the light emitted from the second light source 21 and reflected by the reflector 22. The shade 23 is provided so as to protrude upward from the front end of the second base member 24. The second base member 24 is a metal plate for mounting the second light source 21. The second base member 24 is provided so that the normal direction of the plate is upward.
[0015] In this second unit 20, the normal direction of the second base member 24 is upward, and the second light source 21 is mounted on the second base member 24 via the circuit board CB2. The second unit 20 is also installed so that the reflector 22 covers the upper side of the second light source 21 and the open side of the spheroid faces the front of the vehicle. Therefore, the second unit 20 is configured as a projector-type lamp that emits light from the second light source 21 toward the front of the vehicle via the reflector 22.
[0016] Fig. 3 is a front perspective view showing a part of the configuration in Fig. 2, and Fig. 4 is a rear perspective view showing a part of the configuration in Fig. 2. Fig. 5 is a cross-sectional view taken along line IV-IV in Fig. 2.
[0017] The first base member 13 and the second base member 24 shown in Figures 3 and 4 are integrally formed into a continuous unit. As shown in Figures 3 to 5, the first unit 10 (see Figure 1) further includes a first heat dissipation fin 14.
[0018] The first heat dissipating fins 14 are a plurality of metal plates integrally provided with the first base member 13. The first heat dissipating fins 14 are provided extending rearward (opposite the first direction) from the first base member 13. The first heat dissipating fins 14 are formed extending laterally (more specifically, parallel to the second base member 24), which is the direction in which the first unit 10 and the second unit 20 are aligned, but are not limited thereto and may be angled with respect to the laterally.
[0019] 4 and 5, the second unit 20 (see FIG. 1) includes a third base member 25 and a second heat dissipation fin 26. The third base member 25 is a plate member that is integrally connected to the second base member 24 and extends from the second base member 24 along the extension direction (up-down direction) of the first base member 13. Note that the third base member 25 does not necessarily need to extend parallel to the extension direction of the first base member 13, and may have a slight angle (for example, within about 20°) relative to the parallel direction.
[0020] The second heat dissipating fins 26 are a plurality of metal plates integrally provided with the third base member 25. The second heat dissipating fins 26 are formed extending backward from the third base member 25 in the same direction as the first heat dissipating fins 14. Similarly to the first heat dissipating fins 14, the second heat dissipating fins 26 are also formed extending laterally (more specifically, parallel to the second base member 24) in the direction in which the first unit 10 and the second unit 20 are aligned. However, the second heat dissipating fins 26 are not limited to this, and may be angled with respect to the side.
[0021] In this way, the vehicle lamp 1 according to this embodiment has the units 10 and 20 of the direct type and the projector type, and the first light source 11 and the second light source 21 emit light in different directions. Therefore, the normal directions of the first base member 13 and the second base member 24 on which these light sources 11 and 21 are mounted are also different. For this reason, in a lamp in which heat dissipation fins are simply formed on these base members 13 and 24, the extension directions of the heat dissipation fins are different. However, the vehicle lamp 1 according to this embodiment (see FIG. 1) includes the third base member 25 that extends from the second base member 24 of the second unit 20 in the same direction as the extension direction of the first base member 13, so that the second heat dissipation fin 26 can be extended from the third base member 25. As a result, the vehicle lamp 1 can have the first heat dissipation fin 14 extending from the first base member 13 and the second heat dissipation fin 26 extending from the third base member 25 in the same direction.
[0022] Here, as shown in FIG. 5, the third base member 25 is provided from the second light source 21 toward the normal direction of the second base member 24. In this way, the third base member 25 is provided, for example, directly below the second light source 21. This makes it possible to suppress a decrease in heat dissipation performance of the vehicle lamp 1 due to the presence of the third base member 25 interposed between the second base member 24 and the second heat dissipation fin 26. In the example shown in FIG. 5, the entire third base member 25 is provided so as to coincide with the normal direction of the second light source 21, but this is not limiting, and the connection portion C between the second base member 24 and the third base member 25 may be provided at a position that is in the normal direction of the second light source 21.
[0023] Furthermore, as shown in FIG. 4, it is preferable that the first heat dissipating fin 14 and the second heat dissipating fin 26 are integrated in a continuous manner with a plurality of fins (at least one or more). This allows the heat dissipation path between the fins 14, 26 to be continuous. If the heat dissipation path between the first heat dissipating fin 14 and the second heat dissipating fin 26 is interrupted, heat retention may occur in the interrupted portion, which may cause a decrease in heat dissipation. However, in the vehicle lamp 1 according to this embodiment, the first heat dissipating fin 14 and the second heat dissipating fin 26 are integrated in a continuous manner with at least one fin, so that at least one heat dissipation path is continuous. Therefore, the vehicle lamp 1 has a fin structure that contributes to reducing the possibility of heat retention.
[0024] Further, as shown in FIG. 3 and FIG. 5, the second unit 20 includes a third heat dissipation fin 27, which is a plurality of metal plate members integrally provided with the third base member 25. Here, the third heat dissipation fin 27 is provided extending forward, not rearward, of the third base member 25. As shown in FIG. 3, in this embodiment, the second light source 21 is located rearward of the first light source 11. Also, as shown in FIG. 5, the third base member 25 is provided directly below the second light source 21. With this configuration, the third base member 25 is also provided slightly rearward, and a space exists in front of the third base member 25. The third heat dissipation fin 27 is provided extending forward of the third base member 25 by utilizing this space. Note that, in this embodiment, the third heat dissipation fin 27 is formed so that the heat dissipation path is in the vertical direction. That is, the heat dissipation path of the third heat dissipation fin 27 intersects (is perpendicular to) the heat dissipation path of the second heat dissipation fin 26.
[0025] Referring again to Fig. 2, the vehicle lamp 1 according to this embodiment further includes a fan (air blowing means) 30 and a bracket 40. Fig. 6 is a perspective view showing the fan 30 and the bracket 40 shown in Fig. 2, and Fig. 7 is a cross-sectional view taken along line VI-VI in Fig. 2. The VI-VI cross section is parallel to the first heat dissipation fin 14 and the second heat dissipation fin 26.
[0026] 6 and 7 is for blowing air to the first heat dissipation fins 14 (first base member 13) and the second heat dissipation fins 26 (third base member 25). The fan 30 is provided at a position behind the first heat dissipation fins 14, and blows air forward.
[0027] The bracket 40 is interposed between the fan 30 and the first and second heat dissipation fins 14 and 26. The bracket 40 includes a first induction portion (induction portion) 41 that guides the airflow from the fan 30 to the first heat dissipation fin 14, and a second induction portion (induction portion) 42 that guides the airflow from the fan 30 to the second heat dissipation fin 26, and guides the airflow to each of the heat dissipation fins 14, 26.
[0028] As shown in FIG. 6 and FIG. 7, the first induction section 41 is an opening located on one side of the bracket 40 toward the fan 30. The first induction section 41 is an approximately semicircular opening. The first induction section 41 has one side 41a and the other side 41b facing the opening. The front end of the one side 41a is inclined to the other side. On the other hand, the front end of the other side 41b is also inclined slightly to the other side, but the inclination angle is smaller than that of the one side 41a. Due to this configuration, the first induction section 41 has an outlet opening area smaller than the inlet opening area. Moreover, the opening inlet and the opening outlet are approximately parallel (for example, the difference between the planar angles of the two is within 20°). Therefore, the airflow from the fan 30 is supplied to the first heat dissipation fin 14 with the flow speed increased by the first induction section 41.
[0029] The second induction section 42 is formed by an opening located on the other side of the fan 30 in the bracket 40. The inlet side of the opening of the second induction section 42 is substantially semicircular, and the outlet side of the opening is rectangular. The second induction section 42 has one side 42a facing the opening. The front side of the one side 42a is greatly inclined toward the other side. Therefore, the airflow from the fan 30 is supplied to the second heat dissipation fin 26 by the second induction section 42. The second induction section 42 has a flat plate 43 facing the one side 42a. Here, the area of the opening outlet of the second induction section 42 is also smaller than the area of the opening inlet. Therefore, the airflow from the fan 30 is supplied to the second heat dissipation fin 26 with the flow rate increased by the second induction section 42 as well. The first induction section 41 has the opening inlet and the opening outlet substantially parallel to each other, so that the flow rate is more likely to be increased. On the other hand, since the opening inlet and the opening outlet of the second guide section 42 are not substantially parallel, the flow velocity increasing effect may be smaller than that of the first guide section 41. However, the second guide section 42 can still exhibit the effect of increasing the flow velocity.
[0030] 7, the third base member 25 has a structure inclined with respect to the surface 13a of the first base member 13 on which the first light source 11 is mounted. The inclination direction is along the direction of airflow to the second heat dissipation fins 26. In other words, the third base member 25 has an inclination such that the side farther from the fan 30 is inclined in a direction away from the fan 30 compared to the surface 13a.
[0031] 7, the first base member 13 has an inclined portion 13b on the second base member 24 side (the other side). The inclined portion 13b guides the airflow directed from the fan 30 toward the first heat dissipating fin 14 so that the airflow reaches the first heat dissipating fin 14 and then flows in the opposite direction to the second heat dissipating fin 26. This inclined portion 13b is formed by thickening the rear portion of the first base member 13.
[0032] A more detailed description will be given. First, one side surface 41a of the first guiding portion 41 generates an airflow A1 that flows parallel to the one side surface 41a. In the vehicle lamp 1, the angle between the airflow A1 and the inclined portion 13b (the angle formed on one side) is 90° or more. Furthermore, the other side surface 41b of the first guiding portion 41 generates an airflow A2 that flows parallel to the other side surface 41b. In the vehicle lamp 1, the angle between the airflow A2 and the inclined portion 13b (the angle formed on one side) is 90° or more. Therefore, the airflow guided by the first guiding portion 41 bounces back to one side (the side opposite to the second heat dissipation fin 26) due to such an angle setting of the inclined portion 13b. As a result, the vehicle lamp 1 can reduce the possibility that the airflow flows to the second heat dissipation fin 26 side and stagnates.
[0033] Next, the operation of the vehicle lamp 1 according to this embodiment will be described. First, in the vehicle lamp 1, the third base member 25 is provided on the second base member 24, and this third base member 25 is provided along the extending direction of the first base member 13. Therefore, in the vehicle lamp 1, the first heat dissipating fin 14 provided on the first base member 13 and the second heat dissipating fin 26 provided on the third base member 25 can be provided so as to extend in the same direction. This makes it possible for the vehicle lamp 1 to be less subject to restrictions on the installation position of the fan 30 due to the difference in the extending directions of the heat dissipating fins.
[0034] In particular, since the vehicle lamp 1 has both heat dissipation fins 14, 26 extending in the same direction, at least one of the both heat dissipation fins 14, 26 can be formed integrally and continuously, and it is also possible to make the heat dissipation path continuous.
[0035] Moreover, the third base member 25 is provided from the position of the second light source 21 toward the normal direction of the second base member 24, i.e., directly below the second light source 21. Therefore, the vehicle lamp 1 can quickly transfer the heat of the second light source 21 to the third base member 25 and dissipate the heat from the second heat dissipation fins 26.
[0036] In addition, since the second light source 21 is provided behind the first light source 11, the third base member 25 provided directly below the second light source 21 is also located slightly behind. Therefore, the vehicle lamp 1 can be provided with the third heat dissipation fin 27 in front of the third base member 25.
[0037] Furthermore, the vehicle lamp 1 includes a bracket 40 having a first guiding portion 41 and a second guiding portion 42 between the fan 30 and the first heat dissipation fin 14 and the second heat dissipation fin 26. Therefore, the vehicle lamp 1 can guide the airflow from the fan 30 by the first guiding portion 41 and the second guiding portion 42, and is less likely to be restricted in the installation position of the fan 30, improving the degree of freedom in installing the fan 30.
[0038] Furthermore, since the first guiding portion 41 and the second guiding portion 42 have an outlet area smaller than the inlet area of the opening, the flow speed of the air flowing toward the first heat dissipation fin 14 and the second heat dissipation fin 26 is increased.
[0039] Here, the first base member 13 has an inclined portion 13b in a rear portion. The inclined portion 13b is set at an angle such that the airflow arriving via the first guiding portion 41 is directed in the opposite direction to the second heat dissipating fin 26. Therefore, the airflow guided to the first heat dissipating fin 14 via the first guiding portion 41 smoothly flows in the opposite direction to the second heat dissipating fin 26 after arriving at the first base member 13.
[0040] On the other hand, the third base member 25 is inclined with respect to the surface 13a of the first base member 13 on the mounting side of the first light source 11. This inclination is such that the side of the third base member 25 farther from the fan 30 is in a direction away from the fan 30 compared to the surface 13a. Therefore, although the airflow guided to the second heat dissipation fin 26 by the second guide portion 42 is bounced off the third base member 25, the amount of the bounce is small. As a result, the vehicle lamp 1 reduces the possibility that the airflow from the fan 30 will not reach the deep side of the third base member 25 due to the airflow bounced off the closer side of the third base member 25.
[0041] Thus, according to the vehicle lamp 1 of this embodiment, the second unit 20 includes the third base member 25 extending from the second base member 24 along the extension direction of the first base member 13. Therefore, by providing the heat dissipation fins 14, 26 on the first base member 13 and the third base member 25, respectively, the vehicle lamp 1 can make both heat dissipation fins 14, 26 extend in the same direction. This alleviates the restriction on the installation position of the fan 30 due to the different extension directions of both heat dissipation fins, and increases the freedom of installation of the fan 30.
[0042] In addition, since the third base member 25 is provided from the second light source 21 toward the normal direction of the second base member 24, the heat generated by the second light source 21 is quickly transferred to the third base member 25 through the second base member 24 and dissipated. Therefore, the vehicle lamp 1 can contribute to improving heat dissipation.
[0043] In addition, since the first heat dissipation fin 14 and the second heat dissipation fin 26 are integrally formed, the heat dissipation path of the first heat dissipation fin 14 is directly continuous with the heat dissipation path of the second heat dissipation fin 26. This makes it possible for the vehicle lamp 1 to prevent the accumulation of heat caused by the heat dissipation paths being interrupted.
[0044] In addition, since the second light source 21 is located behind the first light source 11, the third base member 25 is also located behind the first light source 11. As a result, the vehicle lamp 1 has a space in front of the third base member 25. Therefore, the vehicle lamp 1 can be provided with a third heat dissipation fin 27 in front of the third base member 25, for example.
[0045] Furthermore, the vehicle lamp 1 includes a bracket 40 between the fan 30 and both heat dissipation fins 14, 26, and the bracket 40 has guide portions 41, 42 for respectively guiding the airflow of the fan 30. Therefore, the vehicle lamp 1 can distribute the airflow from the fan 30 by the guide portions 41, 42, and the fan 30 can be installed with greater freedom without being restricted in its installation position.
[0046] Moreover, the third base member 25 is inclined with respect to the first base member 13, and the inclination direction is such that the side farther from the fan 30 is farther from the fan 30. Therefore, the vehicle lamp 1 can reduce the amount of airflow from the fan 30 that bounces back after contacting the third base member 25. This can reduce the possibility that the airflow from the fan 30 will not reach the deep side of the third base member 25 due to the airflow being blown to the closer side of the third base member 25 and bouncing back. Therefore, the vehicle lamp 1 can contribute to improving heat dissipation performance.
[0047] In addition, the vehicle lamp 1 has an inclined portion 13b that guides the airflow after reaching the first heat dissipation fin 14 in the direction opposite to the second heat dissipation fin 26, thereby reducing the possibility that the airflow will flow toward the second heat dissipation fin 26 and become stagnant.
[0048] In addition, since the area of the opening outlet of the bracket 40 is smaller than the area of the opening inlet of the first guiding section 41 and the second guiding section 42, the air flow speed is increased, which contributes to improving heat dissipation.
[0049] Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-described embodiments, and modifications may be made or known technologies may be combined without departing from the spirit of the present invention.
[0050] For example, in this embodiment, the third base member 25 is provided perpendicular to the second base member 24, but this is not limited to being perpendicular, and as long as it is along the extension direction of the first base member 13, it is not limited to being perpendicular.
[0051] Furthermore, the third base member 25 is provided at a position directly below the second light source 21, but the position is not limited to this position and may be slightly shifted.
[0052] 5, the first heat dissipating fin 14 and the second heat dissipating fin 26 are integrated on the same plane, but are not limited to being on the same plane. For example, the first heat dissipating fin 14 may extend laterally, and the second heat dissipating fin 26 may be integrated at a slight incline relative to the side, and so on, and the two may not be on the same plane.
[0053] Also, the fan 30 is provided behind the first heat dissipating fin 14, but is not limited thereto. For example, the fan 30 may be provided at another position, such as behind the second heat dissipating fin 26, and may send air to the respective heat dissipating fins 14, 26 by utilizing the guide portions 41, 42 of the bracket 40. Note that, in the vehicle lamp 1 according to this embodiment, since the second light source 21 is provided behind the first light source 11, there is a space behind the first light source 11 (i.e., behind the first heat dissipating fin 14). For this reason, it can be said that it is preferable to provide the fan 30 behind the first heat dissipating fin 14.
[0054] Further, the vehicle lamp 1 according to the present embodiment has been described taking a headlamp as an example, but is not particularly limited to a headlamp. [Explanation of symbols]
[0055] 1: Vehicle lighting fixtures 10: First Unit 11: 1st light source 13: First base member 13a:face 13b: Inclined part 14: First heat dissipation fin 20: Second Unit 21:Second light source 24: Second base member 25: Third base member 26: Second heat dissipation fin 27: 3rd heat dissipation fin 30: Fan (air blowing means) 40: Bracket 41: 1st guiding part (guiding part) 42:Second guiding part (guiding part)
Claims
1. A vehicle lamp in which a first unit including a first light source that emits light in a first direction, a first base member that is a plate material for mounting the first light source, and a first heat dissipation fin, and a second unit including a second light source that emits light in a second direction intersecting the first direction, a second base member that is a plate material for mounting the second light source, and a second heat dissipation fin are arranged side by side, the second unit further includes a third base member that is a plate member connected to the second base member and extending along the extension direction of the first base member, The first heat dissipation fin extends from the first base member in a direction opposite to the first direction, and the second heat dissipation fin extends from the third base member along the extending direction of the first heat dissipation fin. A vehicle lamp characterized by the above.
2. The third base member is provided from the second light source toward a normal direction of the second base member.
2. The vehicle lamp according to claim 1.
3. The first heat dissipating fin and the second heat dissipating fin are integrally formed.
2. The vehicle lamp according to claim 1.
4. The second light source is located on the opposite side of the first light source in the first direction.
3. The vehicle lamp according to claim 2.
5. a blower for blowing air to the first heat dissipation fins and the second heat dissipation fins; a bracket interposed between the first and second heat dissipation fins and the air blowing means, The bracket includes a guide portion that guides the airflow from the air blowing means to each of the first heat dissipating fin and the second heat dissipating fin.
2. The vehicle lamp according to claim 1.
6. The air blowing unit is provided at a position opposite to the first direction with respect to the first heat dissipation fin, and blows air in the first direction, the guide portion of the bracket includes a guide portion that guides the airflow from the air blowing means provided at the position toward the second heat dissipation fin, The third base member is inclined with respect to a surface of the first base member on which the first light source is mounted, and the inclination direction is such that the side farther from the air blowing means is farther away from the air blowing means.
6. A vehicle lamp according to claim 5.
7. The first base member has an inclined portion at a portion of the first base member opposite to the first direction, the inclined portion being configured to guide the airflow directed from the air blowing means toward the first heat dissipating fin so that the airflow, after reaching the first heat dissipating fin, is directed in a direction opposite to the second heat dissipating fin side.
6. A vehicle lamp according to claim 5.
8. The bracket has an opening outlet area smaller than an opening inlet area of the guide portion.
6. A vehicle lamp according to claim 5.
Citation Information
Patent Citations
Vehicle lighting fixtures
JP6736978B2