Vehicle lamp unit and vehicle lamp

Abstract

A vehicle lamp unit and a vehicle lamp are provided, which can obtain light distribution characteristics as designed. A vehicle lamp unit is characterized by comprising: a substrate on which a light source is mounted; a reflector formed by integrally molding a substrate fixing portion and a reflector body; and a screw, wherein a first through hole for inserting the screw is formed on the substrate, the substrate fixing portion includes a boss portion for screwing the screw, the reflector body includes a base end portion fixed to the substrate fixing portion, and a reflecting surface for reflecting light emitted from the light source, the substrate is fixed to the substrate fixing portion in a state of being clamped between the head of the screw and the substrate fixing portion by screwing the screw inserted into the first through hole and the boss portion, and at least one second through hole is formed between the base end portion of the reflector body and the boss portion in the substrate fixing portion.

Description

Technical Field

[0001] The present invention relates to a vehicle lamp, and more particularly to a vehicle lamp unit and a vehicle lamp capable of obtaining light distribution characteristics as designed. Background Art

[0002] Conventionally, in the field of vehicle lamps, there is known a vehicle lamp having the following structure, which comprises: a substrate on which a light source is mounted; and a reflector in which a substrate fixing portion and a reflector body are integrally formed, and the substrate is fixed to the reflector (substrate fixing portion) by screwing a screw inserted into a through hole formed in the substrate with a boss portion (a thick wall portion protruding from the substrate fixing portion, screw boss portion) provided on the substrate fixing portion (for example, refer to Patent Document 1 ( Figure 2 wait)).

[0003] Patent Document 1: Japanese Patent Application Publication No. 2018-137125 Summary of the invention

[0004] However, the inventors have found that the above-mentioned conventional vehicle lamps cannot obtain the designed light distribution characteristics. This is believed to be because the rigidity of the reflector is lower than that of the substrate, so the boss portion deforms with the screwing, which generates stress and causes the reflector (reflecting surface) to deform.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle lamp unit and a vehicle lamp capable of obtaining light distribution characteristics as designed.

[0006] In order to achieve the above-mentioned purpose, one aspect of the present invention is a vehicle lamp unit, characterized in that it comprises: a substrate on which a light source is mounted; a reflector, which is formed by integrally molding a substrate fixing portion and a reflector body; and a locking component, wherein a first through hole for inserting the locking component is formed on the substrate, the substrate fixing portion includes a locked portion engaged with the locking component, the reflector body includes a base end portion fixed to the substrate fixing portion, and a reflecting surface that reflects light emitted from the light source, and the substrate is fixed to the substrate fixing portion in a state of being clamped between the locking component and the substrate fixing portion by engaging the locking component inserted in the first through hole with the locked portion, and at least one second through hole is formed in the substrate fixing portion between the base end portion of the reflector body and the locked portion.

[0007] Here, the locking member is preferably a screw, and the locked portion is preferably a boss portion for the screw to be screwed into. By screwing the screw into the boss portion, the substrate is fixed to the substrate fixing portion in a state of being clamped between the head of the screw and the substrate fixing portion.

[0008] According to this aspect, it is possible to provide a vehicle lamp unit capable of obtaining light distribution characteristics as designed.

[0009] A through hole is formed in the substrate fixing portion between the base end portion of the reflector body and the boss portion.

[0010] Thus, even when the substrate is fixed to the substrate fixing portion by screwing a screw inserted into a through hole formed in the substrate and a boss provided on the substrate fixing portion, deformation of the reflector (reflecting surface) can be suppressed, thereby obtaining light distribution characteristics as designed.

[0011] Furthermore, in the above invention, a preferred embodiment is characterized in that the reflector has lower rigidity than the substrate.

[0012] In addition, in the above invention, the preferred embodiment is characterized in that the vehicle lamp unit also has a heat dissipation component, a third through hole for inserting the screw is formed in the heat dissipation component, and the substrate is arranged between the heat dissipation component and the substrate fixing portion, and the screws inserted into the first through hole and the third through hole are screwed into the boss portion, so that the substrate and the heat dissipation component are fixed to the substrate fixing portion in a state of being clamped between the head of the screw and the substrate fixing portion.

[0013] Furthermore, in the above invention, a preferred embodiment is characterized in that the reflector has lower rigidity than the substrate and the heat dissipation member.

[0014] Furthermore, in the above invention, a preferred embodiment is characterized in that the heat dissipation member includes a heat dissipation fin.

[0015] Furthermore, in the above invention, a preferred embodiment is characterized in that the heat dissipating member does not include a heat dissipating fin.

[0016] In addition, in the above invention, a preferred embodiment is characterized in that the substrate fixing portion includes a positioning protrusion, and the positioning protrusion is respectively arranged at a plurality of positions, and the boss portion exists between the plurality of positions, and the substrate is fixed to the substrate fixing portion in a state in which the positioning protrusion abuts against the substrate and a gap is formed between the substrate and the substrate fixing portion.

[0017] Furthermore, in the above invention, a preferred embodiment is characterized in that the substrate fixing portion includes a reinforcing rib portion, and the reinforcing rib portion is provided between the second through hole and the boss portion.

[0018] Furthermore, in the above invention, a preferred embodiment is characterized in that the reinforcing rib is provided along the second through hole.

[0019] Furthermore, in the above invention, a vehicle lamp, in a preferred embodiment, is characterized by having a plurality of vehicle lamp units according to any one of the above-mentioned side surfaces and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded perspective view of the vehicle lamp 10 as seen from the front.

[0021] Figure 2 This is an exploded perspective view of the vehicle lamp 10 as seen from the rear.

[0022] Figure 3 It is a plan view of the vehicle lamp 10 (vehicle lamp unit 10A) (the substrate 20 and the heat dissipating member 30 are omitted).

[0023] Figure 4 (a) is along Figure 3 The AA cross-sectional view, Figure 4 (b) is along Figure 3 A cross-sectional view of the BB.

[0024] Figure 5 This is a schematic diagram (equivalent to a longitudinal sectional view) for explaining the function of the positioning protrusion 41e.

[0025] Figure 6 This is a diagram for explaining that the reflected light from the reflecting surface 42 b is irradiated in a direction D2 different from the target direction D1 .

[0026] Figure 7 This is an example (modification) of the through hole H6.

[0027] Figure 8 This is an example (modification) of the through hole H6.

[0028] Fig. 9 This is an example of the reinforcing rib 41h.

[0029] Fig.10 This is a modified example of the heat dissipation member 30 .

[0030] Fig.11 This is a modified example of the lamp unit 10A.

[0031] Fig.12 This is a modified example of the lamp unit 10A.

[0032] Description of symbols

[0033] 10: vehicle lamp; 10A~10C: vehicle lamp unit; 20: substrate; 20a: upper surface; 20b: lower surface; 21: light source; 30: heat dissipation component; 31: base; 31a: upper surface; 31b: lower surface; 32: heat sink; 32a: notch; 40: reflector; 41: substrate fixing portion; 41a: upper surface; 41b: lower surface; 41c: boss; 41d: positioning pin; 41e: positioning convex portion; 41h: reinforcing rib; 41j: connecting portion; 41k: screw hole; 42: reflector body; 42a: base end portion; 42b: reflecting surface; 50: screw; 51: head; D1, D2: directions; H1~H6: through holes; S: gap. DETAILED DESCRIPTION

[0034] Hereinafter, a vehicle lamp 10 according to an embodiment of the present invention will be described with reference to the drawings. In each of the drawings, the same reference numerals are given to corresponding components, and duplicate descriptions are omitted.

[0035] Figure 1 is an exploded perspective view of the vehicle lamp 10 as viewed from the front. Figure 2 This is an exploded perspective view from the rear. Figure 3 is a top view (the substrate 20 and the heat dissipation component 30 are omitted). Figure 4 (a) is along Figure 3 The AA cross-sectional view, Figure 4 (b) is along Figure 3 A cross-sectional view of the BB.

[0036] Figure 1 to Figure 4 The vehicle lamp 10 shown is a vehicle headlamp capable of forming a low beam light distribution pattern or a high beam light distribution pattern, and is mounted on the left and right sides of the front end of a vehicle (not shown). The low beam light distribution pattern or the high beam light distribution pattern is formed on a virtual vertical screen (arranged about 25 meters in front of the front surface of the vehicle) facing the front surface of the vehicle.

[0037] The vehicle lamp 10 mounted on the left and right sides is a bilaterally symmetrical structure, so the vehicle lamp 10 mounted on the right side (right side when facing the front of the vehicle) of the front end of the vehicle (not shown) is representatively described below. In the following, for the convenience of description, the XYZ axes are defined. The X axis extends in the front-rear direction of the vehicle, the Y axis extends in the vehicle width direction, and the Z axis extends in the vertical direction.

[0038] like Figure 1As shown, the vehicle lamp 10 has three vehicle lamp units 10A, 10B, and 10C. Hereinafter, the vehicle lamp units 10A, 10B, and 10C are referred to as lamp units 10A, 10B, and 10C. The lamp units 10A and 10B are lamp units for low beams. On the other hand, the lamp unit 10C is a lamp unit for high beams. The lamp units 10A and 10B for low beams and the lamp unit 10C for high beams have the same structure except for the different reflective surfaces. Therefore, the lamp unit 10A for low beams will be described as a representative example below.

[0039] like Figure 4 As shown, the lamp unit 10A includes a substrate 20 on which a light source 21 is mounted, a heat sink 30, a reflector 40, and screws 50. Although not shown, the lamp unit 10A is disposed in a lamp chamber composed of an out lens and a housing, and is fixed to the housing or the like.

[0040] The substrate 20 is a substrate made of metal such as aluminum, including an upper surface 20 a and an opposite lower surface 20 b .

[0041] The light source 21 is mounted on the lower surface 20b of the substrate 20 and emits light downward. The light source 21 is, for example, a semiconductor light emitting element such as an LED that emits white light.

[0042] The substrate 20 includes a through hole H1 (an example of the “first through hole” of the present invention) and a through hole H2. The through hole H1 is for inserting a boss portion 41c (an example of the “locked portion” of the present invention) (and a screw 50 (an example of the “locking member” of the present invention)) provided on the reflector 40. The through hole H2 is for inserting a positioning pin 41d (see FIG. 2 ) provided on the reflector 40. Figure 4 Each through hole H1 and H2 penetrates the upper surface 20a and the lower surface 20b of the substrate 20.

[0043] The heat dissipation member 30 is a member (heat sink) for dissipating heat generated in the light source 21 for cooling, and includes a base portion 31 and heat dissipation fins 32. The heat dissipation member 30 is made of metal such as aluminum die casting, for example.

[0044] The base portion 31 includes an upper surface 31 a and a lower surface 31 b opposite thereto. A plurality of heat sinks 32 are provided on the upper surface 31 a of the base portion 31 .

[0045] The heat dissipation member 30 (base portion 31) is provided with a through hole H3 (an example of the "third through hole" of the present invention) and a through hole H4. The through hole H3 is provided for inserting the boss portion 41c (and the screw 50) provided on the reflector 40. The through hole H4 is provided for inserting the positioning pin 41d (see Figure 4(b)) is inserted. Each through hole H3, H4 penetrates the upper surface 31a and the lower surface 31b of the base portion 31. In addition, a notch portion 32a is formed in a portion of the heat sink 32 so that the boss portion 41c inserted into the through hole H3 does not interfere (refer to Figure 1 ).

[0046] The reflector 40 includes a substrate fixing portion 41 (top surface) and a reflector body 42. The reflector 40 is made of a synthetic resin such as polycarbonate, and is integrally molded by injection molding the synthetic resin such as polycarbonate.

[0047] The substrate fixing portion 41 includes an upper surface 41 a and a lower surface 41 b opposite thereto. The upper surface 41 a is a plane substantially parallel to the XY plane.

[0048] The reflector body 42 includes a base end portion 42 a continuous with the substrate fixing portion 41 (lower surface 41 b ), and a reflecting surface 42 b that reflects light emitted from the light source 21 .

[0049] The reflecting surface 42b is formed by performing metal vapor deposition such as aluminum vapor deposition on the front surface of the reflector body 42. In addition, when the reflector 40 is made of polycarbonate, there is an advantage that direct vapor deposition can be performed without applying an undercoat.

[0050] The reflecting surface 42b is a reflecting surface based on a parabola, and includes a plurality of rectangular reflecting areas (not shown) divided in a grid shape by a horizontal plane and a vertical plane (so-called multi-reflector). The light source 21 is arranged near the focus of the reflecting surface 42b. The surface shape of each reflecting area is designed so that the light from the light source 21 reflected by the reflecting area and irradiated forward forms a low beam light distribution pattern. In addition, Figure 4 Symbol AX in (a) is the optical axis of the lamp unit 10A, passes through the focus of the reflecting surface 42b and extends in the X direction.

[0051] like Figure 3 As shown, the substrate fixing portion 41 (upper surface 41 a ) includes a boss portion 41 c (screw boss portion), a positioning pin 41 d , and a positioning protrusion 41 e .

[0052] The boss portion 41c is provided on the upper surface 41a of the substrate fixing portion 41, further rearward than the base end portion 42a of the reflector body 42 ( Figure 3 The boss portion 41c is configured as a truncated cone whose diameter decreases as it goes upward (see Figure 1 , Figure 4 The boss portion 41c has a screw hole 41k (see Figure 4 The screw hole 41k extends in the Z direction from the front end surface of the boss portion 41c.

[0053] The positioning pin 41d is provided at an appropriate position (at Figure 3 , two examples are shown).

[0054] The positioning protrusions 41e are respectively provided at a plurality of locations on the upper surface 41a of the substrate fixing portion 41, and the boss portions 41c are located between the plurality of locations. For example, the positioning protrusions 41e are respectively provided at the rear of the boss portions 41c on the upper surface 41a of the substrate fixing portion 41 ( Figure 3 The part above the Figure 3 , two examples are shown) and near the front ( Figure 3 The part below the Figure 3 (In the figure, two places are shown as an example). The front end surface of the positioning protrusion 41e is a plane substantially parallel to the XY plane. In addition, the positioning protrusion 41e is sometimes omitted.

[0055] Figure 5 41e is a schematic diagram (equivalent to a longitudinal sectional view) for explaining the function of the positioning protrusion 41e. Figure 5 In the figure, the boss portion 41c, the screw 50, etc. are omitted. Figure 5 , the substrate 20, the heat dissipation member 30, and the reflector 40 (substrate fixing portion 41) are briefly described.

[0056] like Figure 5 As shown in FIG. 2( a ), the positioning protrusion 41 e is brought into contact with the substrate 20 (lower surface 20 b ), so that a gap S is formed between the lower surface 20 b of the substrate 20 and the upper surface 41 a of the substrate fixing portion 41 of the reflector 40 .

[0057] The length L of the positioning protrusion 41 e in the Z direction may be a length sufficient to form a gap S between the lower surface 20 b of the substrate 20 and the upper surface 41 a of the substrate fixing portion 41 of the reflector 40 , and may be several millimeters, for example.

[0058] like Figure 3 , Figure 4 As shown, a through hole H5 is formed in the substrate fixing portion 41 to allow light from the light source 21 mounted on the substrate 20 to pass through. The through hole H5 penetrates the upper surface 41a and the lower surface 41b of the substrate fixing portion 41. The through hole H5 is formed at a position forward of the base end portion 42a of the reflector body 42.

[0059] The substrate 20 of the above structure is arranged in a state where the lower surface 20b of the substrate 20 faces the upper surface 41a of the substrate fixing portion 41 of the reflector 40 (see Figure 4 ).

[0060] At this time, the boss portion 41c provided on the reflector 40 is inserted into the through hole H1 formed on the substrate 20. At the same time, the positioning pin 41d provided on the reflector 40 is inserted into the through hole H2 formed on the substrate 20. Thus, the substrate 20 is positioned with respect to the XY directions.

[0061] In addition, if Figure 5 As shown in (a) of FIG. 1 , the positioning protrusion 41 e (front end surface) provided on the reflector 40 abuts against the lower surface 20 b of the substrate 20 . Thus, the substrate 20 is positioned with respect to the Z direction.

[0062] At this time, since a gap S is formed between the lower surface 20b of the substrate 20 and the upper surface 41a of the substrate fixing portion 41 of the reflector 40, the lower surface 20b of the substrate 20 and the upper surface 41a of the substrate fixing portion 41 of the reflector 40 do not abut against each other. Thus, regardless of the state of the upper surface 41a of the substrate fixing portion 41 of the reflector 40 (for example, even if the upper surface 41a of the substrate fixing portion 41 of the reflector 40 is not a flat surface but is deformed), the substrate 20 can be positioned with high accuracy in the Z direction.

[0063] As described above, the substrate 20 is positioned in the XYZ directions, and as a result, the light source 21 is disposed near the focal point of the reflector 40 with high accuracy.

[0064] On the other hand, the heat dissipation member 30 of the above structure is arranged in a state where the lower surface 31b of the heat dissipation member 30 abuts against the upper surface 20a of the substrate 20 (see Figure 4 ).

[0065] At this time, the boss portion 41c inserted into the through hole H1 formed on the substrate 20 is inserted into the through hole H3 formed on the heat dissipation member 30 (see Figure 4 At the same time, the positioning pin 41d inserted into the through hole H2 formed on the substrate 20 is inserted into the through hole H4 formed on the heat dissipation member 30 (see Figure 4 (b)). Thus, the heat dissipation member 30 is positioned with respect to the XY directions.

[0066] Although not shown, a thermally conductive member is preferably disposed between the substrate 20 (upper surface 20a) and the heat dissipating member 30 (lower surface 31b) in order to improve the heat conductivity between the substrate 20 (light source 21) and the heat dissipating member 30. The thermally conductive member is, for example, thermal grease or a thermally conductive sheet.

[0067] Furthermore, by screwing the screw 50 into the boss portion 41c as described above (for example, screwing it in clockwise), the substrate 20 and the heat dissipation member 30 are fixed to the substrate fixing portion 41 (see FIG. 1 ) in a state of being sandwiched between the head portion 51 of the screw 50 and the substrate fixing portion 41 (positioning convex portion 41e). Figure 4 (a)), wherein the boss portion 41 c is inserted into the through hole H1 formed on the substrate 20 and the through hole H3 formed on the heat dissipation member 30 .

[0068] In the lamp unit 10A having the above configuration, when the light source 21 is turned on, light from the light source 21 passes through the through hole H5 and is reflected by the reflecting surface 42 b and is irradiated forward, thereby forming a low-beam light distribution pattern.

[0069] Figure 6 This is a diagram for explaining that the reflected light from the reflecting surface 42 b is irradiated in a direction D2 different from the target direction D1 .

[0070] After research, the inventors found that in a lamp unit having a similar structure to the above structure but without the through hole H6, Figure 6 As shown, the reflector 40 (reflecting surface 42 b ) is deformed (deformed from the designed shape), and as a result, the reflected light from the reflecting surface 42 b is irradiated in a direction D2 different from the target direction D1 , and the designed light distribution characteristics cannot be obtained. Figure 6 The symbol ε in represents the deformation.

[0071] The reason why the reflector 40 (reflection surface 42 b ) is deformed can be considered as follows.

[0072] That is, the rigidity of the synthetic resin reflector 40 is lower than that of the metal substrate 20 and the heat sink 30, and therefore, the boss portion 41c is compressed and deformed in the Z direction as the screw 50 is screwed in. The substrate 20 and the heat sink 30 are relatively firmly clamped between the head 51 of the screw 50 and the substrate fixing portion 41 (positioning protrusion 41e) by the repulsive force (or restoring force) of the deformed boss portion 41c.

[0073] At this time, stress (hereinafter referred to as first stress) generated by the repulsive force of the boss portion 41c acts on the reflector 40 (reflection surface 42b). As a result, it is considered that the reflector 40 (reflection surface 42b) is deformed.

[0074] Furthermore, it can also be considered as follows.

[0075] That is, when the boss portion 41c is deformed as described above, an upward force F in the Z direction acts on the substrate fixing portion 41 (see Figure 5At this time, since a gap S is formed between the lower surface 20b of the substrate 20 and the upper surface 41a of the substrate fixing portion 41 of the reflector 40, the substrate fixing portion 41 is bent in an arc shape convex upward with the positioning protrusion 41e as a fulcrum due to the upward force F in the Z direction (see Figure 5 The stress (hereinafter referred to as the second stress) generated by the bending of the substrate fixing portion 41 acts on the reflector 40 (reflection surface 42b). As a result, it is considered that the reflector 40 (reflection surface 42b) is deformed.

[0076] Furthermore, it is also considered that as a result of both the first stress and the second stress acting on the reflector 40 (reflection surface 42 b ), the reflector 40 (reflection surface 42 b ) is deformed.

[0077] The inventors of the present invention have conducted intensive research to obtain the light distribution characteristics as designed. As a result, they have found that Figure 3 , Figure 4 As shown in (b), by forming a through hole H6 (an example of the second through hole of the present invention) between the base end portion 42a of the reflector body 42 and the boss portion 41c in the substrate fixing portion 41, it is possible to obtain a light distribution characteristic as designed.

[0078] This is considered to be because, when the through hole H6 is formed, at least one of the first stress and the second stress acts only on the rear portion 41f of the substrate fixing portion 41 bounded by the through hole H6 (see Figure 5 (b)), so, if Figure 5 As shown by the dotted line 41Af in (b), only the rear portion 41f is bent, and the front portion 41g is not bent.

[0079] Figure 7 , Figure 8 This is an example (modification) of the through hole H6.

[0080] The through hole H6 penetrates the upper surface 41a and the lower surface 41b of the substrate fixing portion 41. The through hole H6 only needs to be formed between the base end portion 42a of the reflector body 42 and the boss portion 41c (see Figure 3 , Figure 4 (b)) can be any shape.

[0081] For example, the through hole H6 may be in a shape that is curved along the base end portion 42a of the reflector body 42 when viewed from above (see FIG. Figure 3 , Figure 8 ), or may be a shape extending linearly in the Y direction (refer to Figure 7 ). In addition, the through hole H6 may be divided by the connecting portion 41j in the middle (refer to Figure 3 , Figure 7 (a)), can also be connected (see Figure 7 (b) Figure 7 (c) Figure 8 ).

[0082] In addition, for example, the through hole H6 may be multiple (see Figure 3 , Figure 7 (a)), or one (refer to Figure 7 (b) Figure 7 (c) Figure 8 ).

[0083] In addition, it is preferred that the through hole H6 be set as long as possible in the Y direction (see Figure 3 , Figure 7 (c)), but it can also be set shorter (see Figure 7 (b)).

[0084] In order to suppress deformation of the rear portion 41f due to at least one of the first stress and the second stress acting on the rear portion 41f, Figure 8 , Fig. 9 As shown, it is preferred that a reinforcing rib 41h is provided in the rear portion 41f. It is preferred that the reinforcing rib 41h is provided between the through hole H6 and the boss portion 41c, and it is particularly preferred that the reinforcing rib 41h is provided in a state of bending along the through hole H6 (see Figure 8 ).

[0085] As described above, according to the present embodiment, it is possible to provide the vehicle lamp unit 10A and the vehicle lamp 10 that can obtain the light distribution characteristics as designed.

[0086] A through hole H6 is formed in the substrate fixing portion 41 between the base end portion 42 a of the reflector body 42 and the boss portion 41 c .

[0087] Thus, even if the substrate 20 is fixed to the reflector 40 (substrate fixing portion 41) by screwing the screw 50 inserted into the through hole H1 formed on the substrate 20 into the boss portion 41c provided on the reflector 40 (substrate fixing portion 41), deformation of the reflector 40 (reflecting surface 42b) can be suppressed, and thus, light distribution characteristics as designed can be obtained.

[0088] In addition, in the above-mentioned embodiment, a screw is exemplified as a locking member of the present invention. In addition, as an object to be locked with the screw, i.e., a locked portion, a boss portion provided on a reflector is exemplified, but the present invention is not limited to these, and includes a unit that is locked and fixed in the Z direction for fixing the reflector (a unit that results in compressive deformation of the reflector). For example, in addition to screwing the screw with the boss portion, the following method can also be used: inserting a locking member such as a buttonhole or a rivet into a locking hole directly formed on the locked portion, such as the boss portion or the reflector, and fixing it by compression and riveting (tightening).

[0089] Next, modified examples will be described.

[0090] In the above embodiment, the vehicle lamp unit of the present invention is applied to a vehicle headlamp (a low beam lamp unit and a high beam lamp unit), but the present invention is not limited thereto. For example, the vehicle lamp unit of the present invention may also be applied to various vehicle lamps other than vehicle headlamps, such as vehicle signal lamps.

[0091] Fig.10 This is a modified example of the heat dissipation member 30 .

[0092] In the above embodiment, an example of using the heat dissipation component 30 including the heat dissipation fins 32 is described, but the present invention is not limited thereto. Fig.10 As shown, a heat sink member 30 that does not include (omitted) the heat sink 32 may also be used.

[0093] Fig.11 This is a modified example of the lamp unit 10A.

[0094] In the above embodiment, an example of using the heat dissipation component 30 is described, but it is not limited to this. Fig.11 As shown, the heat dissipation component 30 may also be omitted.

[0095] In this case, the rigidity of the synthetic resin reflector 40 is lower than that of the metal substrate 20, so the boss portion 41c is compressed and deformed in the Z direction as the screw 50 is screwed in. The substrate 20 is clamped between the head 51 of the screw 50 and the substrate fixing portion 41 (positioning protrusion 41e) by the repulsive force (or restoring force) of the deformed boss portion 41c.

[0096] According to this modification, similarly to the above-described embodiment, by forming the through hole H6 between the base end portion 42 a of the reflector body 42 and the boss portion 41 c in the substrate fixing portion 41 , it is possible to obtain light distribution characteristics as designed.

[0097] Fig.12 This is a modified example of the lamp unit 10A.

[0098] The lamp unit 10A may also be arranged in a state where it is rotated by a predetermined angle around the optical axis AX. Fig.12 As shown, the lamp unit 10A may be arranged in a state rotated 90° around the optical axis AX. In addition, for example, although not shown, the lamp unit 10A may be arranged in a state rotated 45° around the optical axis AX.

[0099] The numerical values ​​shown in the above-mentioned embodiments are all examples, and it is obvious that appropriate numerical values ​​different from these numerical values ​​may be used.

[0100] The above-mentioned embodiments are merely illustrative in all aspects. The present invention is not to be interpreted restrictively by the description of the above-mentioned embodiments. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

Claims

1. A vehicle lamp unit, comprising: a substrate on which a light source is mounted; A reflector, wherein the substrate fixing portion and the reflector body are integrally formed; and Locking parts, A first through hole for inserting the locking member is formed on the substrate. The substrate fixing portion includes a locked portion engaged with the locking component, The reflector body includes a base end portion fixed to the substrate fixing portion and a reflecting surface for reflecting light emitted from the light source. The locking member inserted into the first through hole is engaged with the locked portion, so that the substrate is fixed to the substrate fixing portion in a state of being clamped between the locking member and the substrate fixing portion. At least one second through hole is formed in a region of the substrate fixing portion between the base end portion of the reflector body and the locked portion provided on the rear side thereof.

2. The vehicle lamp unit according to claim 1, wherein: The locking component is a screw, and the locked portion is a boss portion for the screw to be screwed into. By screwing the screw into the boss portion, the substrate is fixed to the substrate fixing portion in a state of being clamped between the screw head and the substrate fixing portion.

3. The vehicle lamp unit according to claim 1 or 2, wherein: The reflector has lower rigidity than the substrate.

4. The vehicle lamp unit according to claim 2, wherein: The vehicle lamp unit also has a heat dissipation component. A third through hole for inserting the screw is formed in the heat dissipation component. The substrate is arranged between the heat dissipation component and the substrate fixing portion. By screwing the screws inserted into the first through holes and the third through holes into the bosses, the substrate and the heat dissipation member are fixed to the substrate fixing portion in a state of being sandwiched between the heads of the screws and the substrate fixing portion.

5. The vehicle lamp unit according to claim 4, wherein: The reflector has lower rigidity than the substrate and the heat dissipation member.

6. The vehicle lamp unit according to claim 2, wherein: When the vehicle lamp unit is mounted on a vehicle, the second through hole extends in a vehicle width direction of the vehicle that is perpendicular to a front-rear direction of the vehicle.

7. The vehicle lamp unit according to claim 2, wherein: The second through hole has a curved shape or a linear shape along the base end portion of the reflector body in a plan view.

8. The vehicle lamp unit according to claim 2, wherein: The substrate fixing portion includes a positioning protrusion, The positioning protrusions are respectively arranged at a plurality of locations, and the boss portions are located between the plurality of locations. The substrate is fixed to the substrate fixing portion in a state where the positioning protrusion is in contact with the substrate and a gap is formed between the substrate and the substrate fixing portion.

9. The vehicle lamp unit according to claim 2, wherein: The substrate fixing portion includes a reinforcing rib portion, The reinforcing rib is provided between the second through hole and the boss portion.

10. The vehicle lamp unit according to claim 9, wherein: The reinforcing rib is provided along the second through hole. 11 . A vehicle lamp comprising a plurality of the vehicle lamp units according to claim 1 .

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