Vehicle lamp

Abstract

To provide a vehicular lighting fixture capable of suppressing damage of a cable.SOLUTION: A bracket; a heat sink supported by the bracket; a first substrate supported by the bracket and having a first light emitting element mounted on one surface thereof; a second substrate supported by the heat sink, having a second light emitting element mounted on the one surface thereof, and emitting light in a first direction; and a first cable supported by the first substrate, wherein the bracket includes a first cable supporting portion supporting the first cable on one side in a second direction orthogonal to the first direction, and a second cable supporting portion supporting the first cable on the other side in the second direction, and, the first cable is supported on the bracket via the heat sink and a gap by the first cable support and the second cable support.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle lamp. [Background technology]

[0002] In recent vehicle lamps, light-emitting elements such as light-emitting diodes (LEDs) are used as light sources. Light-emitting diodes are sometimes cooled by heat sinks because high temperatures can reduce their light-emitting efficiency and shorten their lifespan. Patent Document 1 discloses a vehicle lamp in which a heat sink for cooling a circuit board on which a light-emitting element is mounted is provided on the rear side of the circuit board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2021 / 153233 Summary of the Invention [Problem to be solved by the invention]

[0004] Heat sinks often have sharp corners to ensure a large surface area. Furthermore, the heat sink becomes very hot when radiating heat. Therefore, if the cable connected to the light source device comes into contact with the heat sink, the cable may be damaged.

[0005] The present invention has been proposed in view of the above-described conventional circumstances, and one of its objects is to provide a vehicle lamp that can suppress damage to the cable. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides the following means. [1] A bracket and a heat sink supported by the bracket; a first substrate supported by the bracket and having a first light emitting element mounted on one surface thereof; a second substrate supported by the heat sink, having a second light emitting element mounted on one surface thereof, and emitting light in a first direction; a first cable supported by the first substrate; the bracket has a first cable support portion that supports the first cable on one side in a second direction perpendicular to the first direction, and a second cable support portion that supports the first cable on the other side in the second direction, the first cable is supported on the bracket by the first cable support portion and the second cable support portion via a gap with the heat sink. [2] The first cable support portion has a first notch portion into which the first cable is inserted, the second cable support portion has a second notch portion into which the first cable is inserted, The vehicle lamp according to [1], wherein an opening direction of the first cutout portion and an opening direction of the second cutout portion are directions that intersect with each other. [3] The second cable support portion has a first protruding portion and a second protruding portion protruding in the same direction, and the second notch portion is formed between the first protruding portion and the second protruding portion; The vehicular lamp according to [2], wherein the first protrusion and the second protrusion are arranged to be shifted in the second direction. [4] The first cutout portion is open to the upper side and supports the first cable from the lower side, the first protrusion is located between the first notch and the second protrusion in the second direction and supports the first cable from above; The vehicle lamp according to [3], wherein the second protrusion supports the first cable from below. [5] a second cable supported by the second substrate; a terminal portion connected to the connector portion, The first cable is bundled with the second cable at a position closer to the tip than the portion supported by the first cable support portion and the second cable support portion, and is connected to the terminal portion together with the second cable. [1] A vehicle lamp according to the present invention. [6] The bracket is: a recess recessed in the first direction; the first cable support portion and the second cable support portion are located on both sides of the recess in the second direction and protrude to the opposite side of the recess in the recessing direction, The vehicle lamp according to [1], wherein the heat sink is arranged to be housed in the recess. [7] The vehicle lamp described in [1], wherein the overhead line portion of the first cable that spans between the first cable support portion and the second cable support portion is located on one side of the heat sink in the first direction. [Effects of the Invention]

[0007] As described above, the present invention provides a vehicle lamp that can suppress damage to the cable. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a vehicle lamp according to an embodiment. [Figure 2] FIG. 2 is a plan view of the vehicle lamp according to the embodiment. [Figure 3] FIG. 3 is a perspective view of the light source device according to the vehicle lamp of the embodiment, as viewed obliquely from the front. [Figure 4] FIG. 4 is a perspective view of the light source device according to the vehicle lamp of the embodiment, as viewed obliquely from behind. [Figure 5] FIG. 5 is a plan view of a light source device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings used in the following description, the dimensions of the components may be shown at different scales to make them easier to see, and the dimensional ratios of the components may not necessarily be the same as in reality.

[0010] Furthermore, XYZ coordinates are shown in each figure as appropriate. The Y axis is the front-to-rear direction (first direction) of the vehicle on which the vehicle lamp 1 is mounted, with the +Y side (first side) being the front side and the -Y side (second side) opposite the +Y side being the rear side. The X axis direction is the left-to-right direction (second direction) of the vehicle, with the +X side being the right side and the -X side being the left side. The Z axis direction is the vertical direction, with the +Z side being the upper side and the -Z side being the lower side. Note that the orientation in which the vehicle lamp 1 is assembled to the vehicle is not limited to this embodiment.

[0011] FIG. 1 is a front view of a vehicle lamp 1 according to this embodiment. FIG. 2 is a plan view of the vehicle lamp 1. The vehicle lamp 1 according to this embodiment is a front combination lamp (headlight unit) mounted, for example, at both corners of the front end of a vehicle (not shown) (in this embodiment, at the corner on the right front end). The front combination lamp according to this embodiment is a lamp unit having a headlamp unit 2, a tri-function first lamp 1A, and a second lamp 1B that functions as a side marker. The tri-function first lamp 1A has three main functions: a daytime running lamp (DRL) that emits white light during the day, a position lamp that emits white light at night, and a turn signal (turn lamp) that flashes with amber light.

[0012] In the following description, a vehicle lamp 1 that is mounted on the right side (+X) of a pair of headlights mounted on a vehicle will be described. Note that the vehicle lamp 1 that is mounted on the left side (-X) of a pair of headlights of a vehicle has a configuration that is inverted in the left-right direction X from the following description.

[0013] As shown in Figure 1, the vehicle lamp 1 has a headlamp unit 2, a light source device 50, an extension 21, a first light guide 31, a second light guide 32, a third light guide 33, a first inner lens 41, a second inner lens 42, a third inner lens 43, and a housing 3 that supports these.

[0014] 2, the extension 21 is a plate-like member that extends at an angle toward the right (+X) side toward the rear (-Y) side. The extension 21 is disposed in front (+Y) of the light source device 50, the first light guide 31, the second light guide 32, and the third light guide 33.

[0015] As shown in Fig. 1, the extension 21 is provided with a first opening 21a, a second opening 21b, and a third opening 21c. The first opening 21a is covered by a first inner lens 41. The second opening 21b is covered by a second inner lens 42. The headlamp unit 2 is disposed in the third opening 21c. The headlamp unit 2 emits light to the front (+Y) side through the third opening 21c.

[0016] The first inner lens 41, the second inner lens 42, and the third inner lens 43 are each made of a transparent resin material or glass. The first inner lens 41 is disposed in front of the first light guide 31 and diffuses the light emitted from the first light guide 31 to emit the light to the front (+Y) and right (+X) sides. The second inner lens 42 is disposed in front of the second light guide 32 and the third light guide 33 (+Y) and diffuses the light emitted from the second light guide 32 and the third light guide 33 to emit the light to the front (+Y) and right (+X) sides.

[0017] As shown in Fig. 2, the third inner lens 43 is plate-shaped. The third inner lens 43 extends along a plane perpendicular to the left-right direction X. The third inner lens 43 is disposed on the rear side (-Y) of the extension 21. The third inner lens 43 is also disposed on the right side (+X) of the light source device 50. The third inner lens 43 faces the first light-emitting element 51 of the light source device 50 in the left-right direction X. The third inner lens 43 diffuses light emitted from the first light-emitting element 51 and emits the diffused light to the right side (+X).

[0018] The first light guide 31, the second light guide 32, and the third light guide 33 are each rod-shaped and curved in an arch shape toward the left (-X) as they move toward the front (+Y). The cross-sectional shapes of the first light guide 31, the second light guide 32, and the third light guide 33 in this embodiment are substantially circular. The first light guide 31, the second light guide 32, and the third light guide 33 are made of a light-transmitting material such as polycarbonate, transparent resin, or glass.

[0019] 1 , the first light guide 31, the second light guide 32, and the third light guide 33 are provided at their rear ends with incident portions 31a, 32a, and 33a, respectively. The incident portion 31a of the first light guide 31 faces the second light-emitting element 52 and guides light emitted from the second light-emitting element 52 into the first light guide 31. The incident portion 32a of the second light guide 32 faces the third light-emitting element 53 and guides light emitted from the third light-emitting element 53 into the second light guide 32. The incident portion 33a of the third light guide 33 faces the fourth light-emitting element 54 and guides light emitted from the fourth light-emitting element 54 into the third light guide 33. The light guided into the first light guide 31, the second light guide 32, and the third light guide 33 is emitted substantially uniformly from the entire length of the light guide toward the front (+Y) and right (+X) sides due to the action of a reflection cutter (not shown) provided in each light guide. As a result, the first light guide 31, the second light guide 32, and the third light guide 33 emit light substantially uniformly over their entire lengths.

[0020] FIG. 3 is a perspective view of the light source device 50 as seen obliquely from the front. The light source device 50 includes a first substrate 81, a second substrate 82, a first cable 91, a second cable 92, a bracket 60, and a heat sink 70.

[0021] The first substrate 81 has a first light-emitting element 51 and a first connector portion 81b. The first substrate 81 in this embodiment is a rigid substrate. The first substrate 81 may be a flexible substrate. The first substrate 81 is located on the left side (-X) of the third inner lens 43 and is disposed along the third inner lens 43. The first substrate 81 extends along a plane perpendicular to the left-right direction X and extends at a slight incline toward the right side (+X) as it moves toward the rear side (-Y). The first substrate 81 has a mounting surface 81f on its front surface facing the right side (+X) and a fixed surface 81e facing the opposite side, and the mounting surface 81f faces the third inner lens 43.

[0022] The first light-emitting element 51 and the first connector portion 81b are mounted on a mounting surface 81f of the first substrate 81. The first light-emitting element 51 functions as a light source for the side marker. The first light-emitting element 51 in this embodiment is a light-emitting diode (LED), but is not limited to this.

[0023] A first cable 91 is connected to the first connector portion 81b. As a result, the first cable 91 is supported by the first substrate 81. The first cable 91 supplies power to the first substrate 81. The first cable 91 passes behind the heat sink 70 (-Y) and the left side (-X) of the second substrate 82, and is routed to the front side (+Y) of the second substrate 82. In this embodiment, a heat-resistant cover 91c is provided on the portion of the first cable 91 that passes behind the heat sink 70 (-Y). The heat-resistant cover 91c protects the first cable 91 from the heat of the heat sink 70. Note that the heat-resistant cover 91c is not essential, and may be omitted when a sufficient distance can be secured between the first cable 91 and the heat sink 70, for example.

[0024] The second substrate 82 has a second light-emitting element 52, a third light-emitting element 53, a fourth light-emitting element 54, and a second connector portion 82b. In this embodiment, the substrate body 82a of the second substrate 82 is a rigid substrate. The second substrate 82 may be a flexible substrate. The second substrate 82 is located on the left side (-X) of the first substrate 81. The second substrate 82 extends along a plane perpendicular to the front-rear direction Y. The second substrate 82 has a mounting surface 82f facing the front side (+Y) and a cooled surface 82e facing the rear side (-Y).

[0025] The second light-emitting element 52, the third light-emitting element 53, the fourth light-emitting element 54, and the second connector portion 82b are mounted on a mounting surface 82f of the second substrate 82. The second light-emitting element 52, the third light-emitting element 53, the fourth light-emitting element 54, and the second connector portion 82b are arranged side by side in the vertical direction Z. The second light-emitting element 52, the third light-emitting element 53, and the fourth light-emitting element 54 function as light sources of the tri-function type first lamp 1A. In this embodiment, the second light-emitting element 52, the third light-emitting element 53, and the fourth light-emitting element 54 are light-emitting diodes (LEDs), but are not limited to this.

[0026] A second cable 92 is connected to the second connector portion 82b. As a result, the second cable 92 is supported by the second board 82. The second cable 92 supplies power to the second board 82. The second cable 92 is routed from the second connector portion 82b to the left side (-X) on the front side (+Y) of the second board 82. The first cable 91 and the second cable 92 are joined and bundled on the front side (+Y) of the second board 82. In the following description, the cable in which the first cable 91 and the second cable 92 are bundled is referred to as a cable bundle 90. A terminal portion 90a is provided at the tip of the cable bundle 90. As shown in FIG. 2, the cable bundle 90 is routed inside the housing 3. The terminal portion 90a of the cable bundle 90 is connected to a connector portion 30 provided on the inner surface of the housing 3.

[0027] FIG. 4 is a perspective view of the light source device 50 as seen obliquely from behind. The heat sink 70 is fixed to the bracket 60. The heat sink 70 has a base portion 71, a plurality of heat dissipation fins 72, and a plurality of fixing portions 73A, 73B, and 73C. The base portion 71 extends along a plane perpendicular to the front-rear direction Y. The base portion 71 has a cooling surface 71a facing the front (+Y) side and a heat dissipation surface 71b facing the rear side.

[0028] 2, the cooling surface 71a is a flat surface perpendicular to the front-rear direction Y. The cooling surface 71a contacts the surface 82e to be cooled of the second substrate 82. The second substrate 82 is fixed to the cooling surface 71a. As a result, the second substrate 82 is supported by the heat sink 70.

[0029] As shown in FIG. 4, the heat dissipation fins 72 protrude from the heat dissipation surface 71b toward the rear side (-Y). In this embodiment, the heat dissipation fins 72 are plate-shaped and extend along a plane perpendicular to the left-right direction X. The heat dissipation fins 72 are aligned in the left-right direction X. Note that the shape and arrangement of the heat dissipation fins 72 are not limited to this embodiment. The heat dissipation fins 72 may be, for example, pin-shaped. The heat sink 70 receives heat from the second substrate 82 at the cooling surface 71a and dissipates the heat into the air at the heat dissipation fins 72. In this way, the heat sink 70 cools the second substrate 82.

[0030] The fixing portions 73A, 73B, and 73C are plate-shaped and perpendicular to the front-rear direction Y. The heat sink 70 of this embodiment is provided with three fixing portions 73A, 73B, and 73C. The three fixing portions 73A, 73B, and 73C are provided at the right end, left end, and bottom end of the heat sink 70, respectively. The heat sink 70 is fixed to the bracket 60 with screws at the fixing portions 73A, 73B, and 73C.

[0031] The bracket 60 is made of a metal material and is fixed to the housing 3 of the vehicle lamp 1. The bracket 60 supports the heat sink 70, the first substrate 81, the first cable 91, and the second cable 92.

[0032] The bracket 60 has a recess recessed toward the rear (-Y) side, and a flange portion 65e extending left-right and downward from the opening of the recess. The recess 65d accommodates the base portion 71 and front ends of the heat dissipation fins 72 of the heat sink 70. The flange portion 65e extends along a plane perpendicular to the front-rear direction Y. The fixing portions 73A, 73B, and 73C of the heat sink 70 are fixed to the flange portion 65e with screws. This supports the heat sink 70 on the bracket 60. The second board 82 is also supported on the bracket 60 via the heat sink 70.

[0033] As shown in FIG. 3 , the recess is perpendicular to the front-rear direction Y and includes a main plate portion constituting the bottom of the recess and a substrate support portion. The main plate portion 65p covers and protects the mounting surface 82f of the second substrate 82 from the front side (+Y). The main plate portion 65p is provided with a first through hole 65a, a second through hole 65b, and a third through hole 65c. The first through hole 65a overlaps the second light-emitting element 52 when viewed from the front side (+Y) and exposes the second light-emitting element 52 to the front side (+Y). The second through hole 65b overlaps the third light-emitting element 53 and the second connector portion 82b when viewed from the front side (+Y) and exposes the third light-emitting element 53 and the second connector portion 82b to the front side (+Y). The third through hole 65c overlaps the fourth light-emitting element 54 when viewed from the front side (+Y) and exposes the fourth light-emitting element 54 to the front side (+Y). Furthermore, the second connector portion 82b is disposed in the third through-hole 65c.

[0034] 3, the board support part 66 is connected to the right side (+X) of the bracket 60. The board support part 66 has a support surface 66e that extends along and contacts the fixed surface 81e of the board main body 81a. The first board 81 is fixed to the support surface 66e with screws. In this way, the first board 81 is supported by the bracket 60.

[0035] The flange portion 65e is provided with a plurality of cable support portions 61, 62, 63, and 64 that support the first cable 91 or the cable bundle 90, and a cable guide portion 69. That is, the bracket 60 has the cable support portions 61, 62, 63, and 64 and the cable guide portion 69.

[0036] 4, of the multiple cable support parts 61, 62, 63, and 64, the first cable support part 61, the second cable support part 62, and the third cable support part 63 support a first cable 91. The cable guide part 69 guides the first cable 91. The fourth cable support part 64 supports a cable bundle 90.

[0037] The first cable support part 61 and the second cable support part 62 protrude rearward (-Y) from the flange part 65e of the bracket main body part 65. The tip parts 61t, 62t of the first cable support part 61 and the second cable support part 62 are respectively located rearward (-Y) from the tip parts of the heat dissipation fins 72. The first cable support part 61 is located on the right side (+X) of the heat sink 70. On the other hand, the second cable support part 62 is located on the left side (-X) of the heat sink 70. In other words, the first cable support part 61 and the second cable support part 62 are located on one side and the other side of the heat sink 70 in the left-right direction X. In addition, in this embodiment, the second cable support part 62 is located slightly lower (-Z) than the first cable support part.

[0038] The first cable support part 61 in this embodiment is plate-shaped and perpendicular to the left-right direction X. A first notch 61c that opens upward (+Z) is provided at a tip end 61t of the first cable support part 61. That is, the first cable support part 61 has the first notch 61c. The first cable 91 is inserted into the first notch 61c. This allows the first cable 91 to be supported by the first cable support part 61. In this embodiment, the width dimension of the first notch 61c is slightly larger than the wire diameter of the first cable 91. Therefore, the inner edge of the first notch 61c does not press on the first cable support part 61, and the burden on the first cable support part 61 can be reduced.

[0039] In this embodiment, a first protrusion 62a and a second protrusion 62b are provided at a tip end 62t of the second cable support part 62. That is, the second cable support part 62 has the first protrusion 62a and the second protrusion 62b. The first protrusion 62a and the second protrusion 62b each protrude toward the rear side (-Y). That is, the first protrusion 62a and the second protrusion 62b protrude in the same direction. A second notch 62c that opens toward the rear side (-Y) is formed between the first protrusion 62a and the second protrusion 62b. That is, the second cable support part 62 has the second notch 62c.

[0040] The first cable 91 is inserted into the second cutout 62c. As a result, the first cable 91 is supported by the second cable support part 62. In this embodiment, the width dimension of the second cutout 62c is slightly larger than the wire diameter of the first cable 91. Therefore, like the first cable support part 61, the inner edge of the second cutout 62c does not press against the second cable support part 62.

[0041] In this embodiment, the first cable 91 is provided with a heat-resistant cover 91c at a portion supported by the first cable support part 61 and the second cable support part 62. Therefore, the wire diameter of the first cable 91 at the portion supported by the first cable support part 61 and the second cable support part 62 is the wire diameter of the first cable 91 in a state where it is covered with the heat-resistant cover 91c. Furthermore, when the first cable 91 is not covered with the heat-resistant cover 91c, the width dimensions of the first cutout part 61c and the second cutout part 62c only need to be larger than the wire diameter of the first cable 91 in a state where it is not covered with the heat-resistant cover 91c.

[0042] The first cable 91 has an overhead line portion 91a that is suspended between the first cable support portion 61 and the second cable support portion 62 in the left-right direction X. The overhead line portion 91a faces the heat sink 70 across a gap G. According to this embodiment, the first cable 91 is supported by the bracket 60 on both sides of the heat sink 70 in the left-right direction X, which prevents the first cable 91 from coming into contact with the bracket. Therefore, even if the heat sink 70 is at a high temperature, damage to the first cable 91 due to the heat of the heat sink 70 can be prevented. Furthermore, even if the heat sink 70 has sharp corners, damage to the first cable due to the corners can be prevented.

[0043] In this embodiment, the bracket 60 has a recess 65d on the front side (+Y) that accommodates the heat sink 70, and a first cable support portion 61 and a second cable support portion 62 that are located on both sides of the recess 65d in the left-right direction X and protrude toward the rear side (-Y). According to this embodiment, the bracket 60 can protect the heat sink 70 by accommodating the heat sink 70 in the recess 65d. Furthermore, according to this embodiment, accommodating the heat sink 70 in the recess 65d can shorten the overall lengths of the first cable support portion 61 and the second cable support portion 62, which extend further rearward than the rear (-Y) end of the heat sink 70. This makes the first cable support portion 61 and the second cable support portion 62 less likely to vibrate, allowing the first cable 91 to be stably supported by the first cable support portion 61 and the second cable support portion 62.

[0044] In this embodiment, the second cable support part 62 is located below (-Z) the first cable support part 61. Therefore, the first cable 91 extends downward from the first cable support part 61 toward the second cable support part 62.

[0045] In this embodiment, the opening direction of the first notch 61c (upward (+Z)) and the opening direction of the second notch 62c (rearward (-Y)) intersect with each other. When a cable is supported in notches such as the first notch 61c and the second notch 62c, the cable is likely to come loose in the opening direction of the notch. According to this embodiment, the direction in which the first cable 91 is likely to come loose from the first cable support part 61 and the direction in which the first cable 91 is likely to come loose from the second cable support part 62 can be made to intersect with each other. As a result, even if vibration is applied to the bracket 60, the first cable 91 is unlikely to come loose from the bracket 60. According to this embodiment, the support of the first cable 91 by the bracket 60 can be stabilized.

[0046] As shown in FIG. 4, the first protrusion 62a and the second protrusion 62b are arranged to be offset in the left-right direction X. Therefore, the first protrusion 62a and the second protrusion 62b contact the first cable 91 at positions that are offset from each other in the direction in which the first cable 91 extends (the left-right direction X). According to the second cable support 62 of this embodiment, the first cable 91 can be smoothly routed when the routing direction of the first cable 91 is changed by the second cable support 62. More specifically, in the second cable support 62 of this embodiment, the first protrusion 62a presses the first cable 91 from above (+Z), and the second protrusion 62b presses the first cable 91 from below (-Z). This allows the second cable support 62 to bend the first cable 91. As a result, the second cable support part 62 can route the first cable 91 in a direction inclined upward (+z) on the right side (+X) of the second cable support part 62, and route it in the left-right direction X on the left side (-X) of the second cable support part 62, thereby enabling smooth routing of the first cable 91.

[0047] According to this embodiment, the first cutout 61c supports the first cable 91 from the lower side (-Z). The first protrusion 62a supports the first cable 91 from the upper side (+Z). The second protrusion 62b supports the first cable 91 from the lower side (-Z). In addition, in the left-right direction X, the first protrusion 62a is located between the first cutout 61c and the second protrusion 62b. Therefore, the first cable 91 is supported by each part of the bracket 60 from the up-down direction Z alternately in the order of downward, upward, and downward in the direction in which the first cable 91 extends. This makes it easier for the bracket 60 to hold the first cable 91 even when subjected to vibration, and makes it possible to prevent the bracket 60 from coming off the first cable 91.

[0048] The third cable support portion 63 is provided at the left (-X) end of the flange portion 65e. The third cable support portion 63 is plate-shaped and perpendicular to the front-rear direction Y. The third cable support portion 63 has a third cutout portion 63c that opens to the left (-X) side. The first cable 91 is inserted into the third cutout portion 63c. The width dimension of the third cutout portion 63c is larger than the linear dimension of the first cable 91 at the back of the opening and smaller than the wire diameter of the first cable 91 at the opening portion. This enables the third cutout portion 63c to hold the first cable 91. The first cable 91 is routed in the front-rear direction Y by being supported by the third cutout portion 63c.

[0049] As shown in FIG. 3, the cable guide portion 69 is located below the third cable support portion 63. The cable guide portion 69 has a pair of guide plates 69a. The pair of guide plates 69a protrude forward from a surface of the main plate portion 65p facing the front (+Y) side. The pair of guide plates 69a extend perpendicular to the left-right direction X and are aligned in the left-right direction X. The first cable 91 is passed between the pair of guide plates 69a. The cable guide portion 69 guides the first cable 91, which is supported by the third cable support portion 63, downward.

[0050] The fourth cable support part 64 is located below the cable guide part 69. The fourth cable support part 64 protrudes forward from the main plate part 65p. The fourth cable support part 64 has a fourth notch part 64c that opens upward. The cable bundle 90 is inserted into the fourth notch part 64c. In this way, the fourth cable support part 64 supports the first cable 91 and the second cable 92 that are bundled on the front side (+Y) of the second board 82.

[0051] The first cable 91 bends to the left (-X) below (-Z) the cable guide portion 69 and passes through the fourth notch 64c from the right side (+X) to the left side (-X). The second cable 92 extends from the second board 82 to the front side (+Y) and bends to the left (-X). The second cable 92 is bundled with the first cable 91 and passes through the fourth notch 64c together with the first cable 91 from the right side (+X) to the left side (-X). Therefore, the first cable 91 is bundled with the second cable 92 on the tip side of the portion supported by the first cable support portion 61 and the second cable support portion 62.

[0052] In the present embodiment, the overhead line portion 91a is located on the rear side (-Y) of the heat sink 70. According to the present embodiment, the light source device 50 can be made smaller in the vertical direction than when the overhead line portion 91a is located above or below the heat sink 70. It is generally known that air convection occurs above and below the heat sink 70 as the heat sink 70 dissipates heat. According to the present embodiment, the overhead line portion 91a passes behind the heat sink 70 (-Y), so the first cable 91 does not obstruct the convection around the heat sink 70, and a decrease in the heat dissipation efficiency of the heat sink 70 can be suppressed. In particular, high-temperature air heated by heat dissipation from the heat dissipation fins 72 passes above the heat sink 70. According to the present embodiment, the first cable 91 is not heated by high-temperature air, and the reliability of the first cable 91 can be improved.

[0053] (Variation) 5 is a plan view of a modified light source device 150 that can be used in the above-described embodiment. The light source device 150 of this modified embodiment differs mainly in the configuration of the first cable support part 161 and the second cable support part 162. Note that the same components as those in the above-described embodiment are given the same reference numerals, and their description will be omitted.

[0054] The bracket 160 of this modified example has a bracket main body 65, a first cable support portion 161, and a second cable support portion 162. The first cable support portion 161 and the second cable support portion 162 extend downward from the bracket main body 65 and support a first cable 191 at their lower ends. In this modified example, the overhead line portion 91a of the first cable 191 faces the heat sink 70 in the up-down direction with a gap interposed therebetween. According to this modified example, as in the above-described embodiment, it is possible to prevent the first cable 191 from coming into contact with the bracket. Furthermore, in this modified example, the overhead line portion 91a is located below (-Z) the heat sink 70. This prevents the light source device 150 from becoming large in size in the front-rear direction Y.

[0055] In this modification, the case where the overhead line portion 91a is located below the heat sink 70 has been described, but the first cable 191 may be located above the heat sink 70. In this case, the first cable 191 is disposed sufficiently far from the heat sink 70 so as not to be affected by the air heated by the heat sink 70.

[0056] While the embodiments and modifications of the present invention have been described above, the configurations and combinations thereof in the embodiments and modifications are merely examples, and additions, omissions, substitutions, and other modifications of the configurations are possible without departing from the spirit of the present invention. Furthermore, the present invention is not limited to the embodiments.

[0057] For example, in the above-described embodiment, a headlamp is given as an example of a vehicle lamp according to the present invention, but the vehicle lamp according to the present invention may be applied to lamps for other purposes.

[0058] The light source device of the above-described embodiment does not have a heat sink for cooling the first substrate. However, depending on the number of light-emitting elements mounted on the first substrate and the intended use (light-emitting time), a heat sink for cooling the first substrate may be provided. In this case, the heat sink may be provided separately from the one for cooling the second substrate. Furthermore, the heat sink for cooling the first substrate may also be the same as the one for cooling the second substrate.

[0059] In the above-described embodiment, the width dimensions of the notches of the first cable support part and the second cable support part are described as being slightly larger than the wire diameter of the first cable. However, the width dimensions of these notches may be slightly smaller than the wire diameter of the first cable. In this case, the notches can grip the first cable, and the first cable is prevented from coming off the notches.

[0060] In the above-described embodiment, the description of the outer lens and the reflector provided in the vehicle lamp is omitted. The outer lens and the reflector are fixed to the extension, for example. [Explanation of symbols]

[0061] 1...vehicle lamp, 30...connector portion, 51...first light-emitting element, 52...second light-emitting element, 60, 160...bracket, 61...cable support portion, 61, 161...first cable support portion, 61c...first notch portion, 62, 162...second cable support portion, 62a...first protrusion portion, 62b...second protrusion portion, 62c...second notch portion, 70...heat sink, 71a...cooling surface, 81...first board, 81f, 82f...mounting surface, 82...second board, 82e...cooled surface, 90a...terminal portion, 91...first cable, 92...second cable, Y...front-rear direction (first direction), +Y...front side (first side), -Y...rear side (second side), X...left-right direction (second direction)

Claims

1. A bracket and a heat sink supported by the bracket; a first substrate supported by the bracket and having a first light emitting element mounted on one surface thereof; a second substrate supported by the heat sink, having a second light emitting element mounted on one surface thereof and emitting light in a first direction; a first cable supported by the first substrate; the bracket has a first cable support portion that supports the first cable on one side in a second direction orthogonal to the first direction, and a second cable support portion that supports the first cable on the other side in the second direction, the first cable is supported on the bracket by the first cable support portion and the second cable support portion with a gap between the first cable and the heat sink; Vehicle lighting fixtures.

2. the first cable support portion has a first notch portion into which the first cable is inserted; the second cable support portion has a second notch portion into which the first cable is inserted, An opening direction of the first notch portion and an opening direction of the second notch portion are directions intersecting each other.

2. A vehicle lamp according to claim 1.

3. the second cable support portion has a first protruding portion and a second protruding portion that protrude in the same direction, and the second notch portion is formed between the first protruding portion and the second protruding portion; The first protrusion and the second protrusion are arranged to be shifted in the second direction.

3. A vehicle lamp according to claim 2.

4. the first cutout portion is open to an upper side and supports the first cable from a lower side; the first protruding portion is located between the first notch portion and the second protruding portion in the second direction and supports the first cable from above; The second protrusion supports the first cable from below.

4. A vehicle lamp according to claim 3.

5. a second cable supported by the second substrate; a terminal portion connected to the connector portion, the first cable is bundled with the second cable at a portion closer to a tip end than a portion supported by the first cable support portion and the second cable support portion, and is connected to the terminal portion together with the second cable.

2. A vehicle lamp according to claim 1.

6. The bracket is a recess recessed in the first direction; the first cable support portion and the second cable support portion are located on both sides of the recess in the second direction and protrude to the opposite side in the recessing direction of the recess, The heat sink is arranged to be housed in the recess.

2. A vehicle lamp according to claim 1.

7. a wire portion of the first cable that is bridged between the first cable support portion and the second cable support portion is located on one side of the heat sink in the first direction; 2. A vehicle lamp according to claim 1.

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