Vehicular lighting fixture

Abstract

To provide a vehicular lighting fixture which enables light emission by more uniform light.SOLUTION: A light guide part 5 has a shape in which width increases gradually from one end side toward the other end side and both sides in the width direction sandwiching an optical axis are curved toward one direction. An incident part 7 includes an incident surface 7a opposing to a light source 3 at a central part on the one end side of the light guide part 5. The incident surface 7a has a shape in which both sides in the width direction sandwiching the optical axis are curved toward the one direction and when the light guide part 5 is viewed from the one direction, it is curved in a concave shape, and on the cross section in the thickness direction of the light guide part 5 in parallel with respect to the optical axis, it is curved in a convex shape. A reflection part 8 has a reflection surface 8a which is inclined toward one direction on the other end side of the light guide part 5. The reflection surface 8a has a shape in which both sides in the width direction sandwiching the optical axis are curved toward the one direction.SELECTED DRAWING: Figure 5

Description

[Technical field]

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

[0002] 2. Description of the Related Art Conventionally, a combination of a light source such as a light emitting diode (LED) and a light guide such as an inner lens has been known as a vehicle lamp to be mounted on a vehicle (see, for example, Patent Documents 1 and 2 below).

[0003] In such a vehicle lamp, light emitted from a light source enters the light guide from the entrance surface of the light guide, and while being guided inside the light guide, the light exits from the exit surface of the light guide to the outside of the light guide, making it possible to cause the exit surface of the light guide to emit light as the light-emitting surface of the vehicle lamp. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-85827 A [Patent Document 2] JP 2021-190342 A Summary of the Invention [Problem to be solved by the invention]

[0005] Meanwhile, the above-mentioned LED has a characteristic that light is difficult to diffuse (Lambertian characteristic) while having high directivity (straight-line propagation). For this reason, in vehicle lamps, the difference in brightness between the vicinity of the optical axis of the light emitted from the light source and its surroundings makes the portion of the light guide's exit surface (light-emitting surface) corresponding to the vicinity of the optical axis of the LED appear to shine brighter than the surrounding areas, which is called uneven brightness (light emission).

[0006] In contrast to this, in conventional vehicle lighting fixtures, a light guide is provided with multiple reflective cuts, and the light reflected by these multiple reflective cuts is guided toward the exit surface while diffusing the light by controlling the light distribution of the multiple reflective cuts, thereby obtaining uniform light emission with little unevenness in brightness (light emission) at the exit surface of the light guide.

[0007] However, when point-emitting light emitted from a light source is guided inside a light guide while the exit surface of the light guide is made to emit surface light, in the configuration in which the light distribution is controlled by the above-mentioned multiple reflection cuts, light whose distribution is not controlled may leak out to the outside as stray light between the multiple reflection cuts.

[0008] In this case, when the light emitting surface of the light guide is viewed from a direction other than the front, the luminance (light emission) unevenness occurs due to the above-mentioned stray light, which deteriorates the appearance of the vehicle lamp, especially when it is turned on. Also, processing control is required.

[0009] On the other hand, when the occurrence of uneven brightness (light emission) is eliminated by adding another component such as a light diffusing member, the cost increases due to the increase in the number of components.

[0010] The present invention has been proposed in consideration of the above-mentioned conventional circumstances, and aims to provide a vehicle lamp that enables more uniform light emission by eliminating the difference in brightness between the optical axis of light emitted from a light source and its surroundings, without using multiple reflection cuts. [Means for solving the problem]

[0011] In order to achieve the above object, the present invention provides the following means. [1] A light source; a light guide portion that guides the light emitted from the light source from one end side to the other end side; an incident portion that allows the light emitted from the light source to enter the inside of the light guiding portion from one end side of the light guiding portion; a reflecting section that reflects the light guided toward the other end side of the light guide section toward one direction substantially perpendicular to the optical axis of the light emitted from the light source, the light guiding section has a shape in which a width gradually increases from the one end side toward the other end side, and both sides in a width direction across the optical axis are curved toward the one direction, the entrance portion has an entrance surface facing the light source at a center of one end side of the light guide portion, the entrance surface has a shape in which both sides in a width direction across the optical axis are curved toward the one direction, the entrance surface is curved concavely when the light guiding unit is viewed from the one direction, and the entrance surface has a shape that is curved convexly in a cross section in a thickness direction of the light guiding unit that is parallel to the optical axis, the reflecting portion has a reflecting surface inclined toward the one direction at the other end side of the light guiding portion, The reflective surface has a shape curved toward the one direction on both sides in a width direction across the optical axis. [2] The light guiding section has a shape in which the thickness gradually increases from the one end side toward the other end side, The vehicular lamp according to [1], wherein the reflective surface has a convexly curved shape in a cross section in a thickness direction of the reflective portion parallel to the optical axis. [3] A light guide including the light guide portion, the incident portion, and the reflecting portion, The vehicle lamp described in [1], wherein the light guide includes a light guide portion that guides the light reflected by the reflecting portion toward the one direction, and an exit portion that emits the light guided toward the one direction to the outside of the light guide portion. [4] The vehicular lamp according to [3], wherein the emission portion has a flat emission surface perpendicular to the one direction. [5] A light emitting device comprising a plurality of light emitting units each including the light source and the light guide, The vehicle lamp according to [3], wherein the plurality of light-emitting units are arranged side by side in the width direction and have a structure in which adjacent light guides are connected to each other. [6] A light guide including the light guide portion and the incident portion; A reflector that constitutes the reflecting portion, The vehicle lamp according to [1], wherein the reflector has a reflective surface facing the other end side of the light guide portion. [7] A light emitting device comprising a plurality of light emitting units each including the light source, the light guide, and the reflector, The vehicle lamp described in [6] above, characterized in that the multiple light-emitting units are arranged side by side in the width direction, and have a structure in which adjacent light guides are connected to each other and adjacent reflectors are connected to each other. Effect of the Invention

[0012] As described above, according to the present invention, a vehicle lamp is provided that enables more uniform light emission by eliminating the difference in brightness between the optical axis of light emitted from a light source and its surroundings without using multiple reflection cuts. [Brief description of the drawings]

[0013] [Figure 1] 1 is a perspective view showing a configuration of a vehicle lamp according to an embodiment of the present invention; [Diagram 2] FIG. 2 is a front view showing the configuration of a vehicle lamp. [Diagram 3] FIG. 2 is a top view showing a configuration of a vehicle lamp. [Figure 4] FIG. 2 is a side view showing a configuration of a vehicle lamp. [Diagram 5] FIG. 2 is a top perspective view showing a configuration of a light emitting unit provided in the vehicle lamp. [Figure 6] FIG. 2 is a bottom perspective view showing a configuration of a light emitting unit included in the vehicle lamp. [Figure 7] FIG. 4 is a bottom view showing the configuration of an incident portion of the light-emitting unit. [Figure 8] FIG. 4 is a top view showing the configuration of a reflecting portion of the light-emitting unit. [Figure 9] 4 is a front view showing the optical path of light incident from an incident portion of the light-emitting unit. FIG. [Figure 10] 10 is an enlarged front view of a boxed portion A shown in FIG. 9. [Figure 11] 10 is a cross-sectional view showing the optical path of light in a cross section of the light-emitting unit 2 taken along a line segment BB shown in FIG. [Figure 12] 12 is an enlarged cross-sectional view of a boxed portion C shown in FIG. [Figure 13] 4 is a top view showing the optical path of light reflected by a reflecting portion of the light-emitting unit. FIG. [Figure 14] 4 is a cross-sectional view showing an optical path of stray light in the light-emitting unit. FIG. [Figure 15] FIG. 11 is a cross-sectional view showing a modified example of a vehicle lamp. [Figure 16] FIG. 11 is a cross-sectional view showing a modified example of a vehicle lamp. [Figure 17] FIG. 11 is a cross-sectional view showing a configuration of another vehicle lamp. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the drawings used in the following description, in order to make each component easier to see, the dimensions of the components may be shown at different scales, and the dimensional ratios of each component may not necessarily be the same as in reality.

[0015] As one embodiment of the present invention, for example, a vehicle lamp 1 shown in Figs. 1 to 17 will be described. FIG. 1 is a perspective view showing the configuration of the vehicle lamp 1. FIG. 2 is a front view showing the configuration of the vehicle lamp 1. FIG. 3 is a top view showing the configuration of the vehicle lamp 1. FIG. 4 is a side view showing the configuration of the vehicle lamp 1. FIG. 5 is an upper perspective view showing the configuration of the light emitting unit 2 provided in the vehicle lamp 1. FIG. 6 is a lower perspective view showing the configuration of the light emitting unit 2 provided in the vehicle lamp 1. FIG. 7 is a bottom view showing the configuration of the incident part 7 of the light emitting unit 2. FIG. 8 is a top view showing the configuration of the reflecting part 8 of the light emitting unit 2. FIG. 9 is a front view showing the optical path of the light L incident from the incident part 7 of the light emitting unit 2. FIG. 10 is a front view in which the enclosed part A shown in FIG. 9 is enlarged. FIG. 11 is a cross-sectional view showing the optical path of the light L in the cross section of the light emitting unit 2 taken along the line segment BB shown in FIG. 9. FIG. 12 is a cross-sectional view in which the enclosed part C shown in FIG. 11 is enlarged. FIG. 13 is a top view showing the optical path of the light L reflected by the reflecting part 8 of the light emitting unit 2. Fig. 14 is a cross-sectional view showing the optical path of stray light L' in the light-emitting unit 2. Fig. 15 is a cross-sectional view showing a modified example of the vehicle lamp 1. Fig. 16 is a cross-sectional view showing a modified example of the vehicle lamp 1. Fig. 17 is a cross-sectional view showing the configuration of another vehicle lamp 1A.

[0016] In addition, in the drawings shown below, an XYZ Cartesian coordinate system is set up, with the X-axis direction representing the front-to-rear direction (length direction) of the vehicle lighting fixture 1, the Y-axis direction representing the left-to-right direction (width direction) of the vehicle lighting fixture 1, and the Z-axis direction representing the up-down direction (height direction) of the vehicle lighting fixture 1.

[0017] As shown in Figures 1 to 4, the vehicle lamp 1 of this embodiment has a plurality of (three in this embodiment) light-emitting units 2, and has an integrated structure in which the plurality of light-emitting units 2 are lined up in the width direction.

[0018] Each light-emitting unit 2 includes a light source 3 and a light guide 4 that guides the light emitted from the light source 3. The light-emitting units 2 each have a structure in which the light sources 3 and the light guides 4 are arranged side by side in the width direction, and adjacent light guides 4 are connected to each other.

[0019] That is, the light guides 4 constituting each light-emitting unit 2 are formed of one light guide member 40 in which adjacent light guides 4 are connected to each other. On the other hand, the light sources 3 constituting each light-emitting unit 2 are provided corresponding to each light guide 4.

[0020] The light source 3 is formed of a light emitting element such as an LED that emits light L radially.

[0021] The light source 3 is mounted on one surface (the upper surface in this embodiment) of a mounting substrate (not shown) and emits light L radially in a direction perpendicular to the surface of the mounting substrate (upward in this embodiment).

[0022] The light guide 4 (light guide member 40) is made of a light-transmitting member such as a transparent resin such as polycarbonate or acrylic, or glass.

[0023] As shown in Figures 5 to 8, the light guide 4 has a first light guiding section 5 and a second light guiding section 6, an entrance section 7 located at one end side (the lower end side in this embodiment) of the first light guiding section 5 and for allowing the light L emitted from the light source 3 to enter the inside of the first light guiding section 5, a reflection section 8 located between the other end side (the upper end side in this embodiment) of the first light guiding section 5 and one end side (the rear end side in this embodiment) of the second light guiding section 6 and for reflecting the light L guided inside the first light guiding section 5 toward the second light guiding section 6, and an exit section 9 located at the other end side (the front end side in this embodiment) of the second light guiding section 6 and for exiting the light L guided inside the second light guiding section 6 to the outside of the second light guiding section 6.

[0024] The first light guiding section 5 constitutes a section that guides the light L incident from the incident section 7 toward the reflecting section 8. The first light guiding section 5 has a shape in which the width gradually increases from one end side toward the other end side, and both sides in the width direction sandwiching the optical axis AX of the light L emitted from the light source 3 are curved toward one direction (forward in this embodiment) approximately perpendicular to the optical axis AX (perpendicular in this embodiment). The first light guiding section 5 also has a shape in which the thickness gradually increases from one end side toward the other end side.

[0025] The "one direction" refers to a reference direction that is approximately perpendicular to the optical axis AX of the light L emitted from the light source 3. In this embodiment, the one direction is the front (+X-axis direction) of the light-emitting unit 2 (vehicle lamp 1), but a direction other than the front (+X-axis direction) can be the one direction depending on the orientation of the light-emitting unit 2 (light source 3 and light guide 4).

[0026] Furthermore, the direction approximately perpendicular to the optical axis AX is not limited to only directions perpendicular to the optical axis AX (directions that are 90° relative to the optical axis AX), but also includes, for example, directions that are 90°±5° relative to the optical axis AX.

[0027] The second light guiding section 6 constitutes a section that guides the light reflected by the reflecting section 8 toward the emitting section 9. The second light guiding section 6 has a certain width and thickness corresponding to the reflecting section 8, and has a shape that protrudes in one direction. Furthermore, the light guiding member 40 has a structure in which the second light guiding sections 6 of the light guides 4 adjacent to each other are connected to each other.

[0028] As shown in FIGS. 6 and 7, the incident portion 7 has an incident surface 7a at the center of one end side of the first light guiding portion 5 facing the light source 3.

[0029] The incident surface 7a has a shape curved in one direction on both sides in the width direction across the optical axis AX to match the shape of one end side of the first light guiding section 5. Meanwhile, the incident surface 7a has a concavely curved lens shape (concave lens surface) when the first light guiding section 5 is viewed from one direction, i.e., in a front view of the light guiding body 4. Meanwhile, the incident surface 7a has a convexly curved lens shape (convex lens surface) in a cross section in the thickness direction of the first light guiding section 5 parallel to the optical axis AX, i.e., in a vertical cross section of the light guiding body 4.

[0030] In the incident section 7, as shown in Figures 9 and 10, of the light L radially emitted from the light source 3, in the width direction of the first light-guiding section 5, the light L that passes through the center of the incident surface 7a enters the inside of the first light-guiding section 5 with or without being refracted in a direction away from the optical axis AX (hereinafter referred to as the "diffusion direction"), and the light L that passes through the peripheral part of the incident surface 7a enters the inside of the first light-guiding section 5 while being refracted in a direction approaching the optical axis AX (hereinafter referred to as the "concentration direction").

[0031] That is, in this incident section 7, the shape of the concave lens surface constituting the incident surface 7a is controlled so that the degree of diffusion of the light L radially emitted from the light source 3 decreases (the spacing between adjacent light rays becomes narrower) in the width direction of the first light-guiding section 5 as it moves away from the optical axis AX.

[0032] As a result, light L entering the first light-guiding section 5 from the incident surface 7a (incident section 7) is guided toward the reflecting section 8 while being diffused in the width direction of the first light-guiding section 5, in accordance with the shape of the first light-guiding section 5, the width of which gradually increases from one end side to the other end side of the first light-guiding section 5 described above.

[0033] On the other hand, in the incident section 7, as shown in Figures 11 and 12, the light L incident on the incident surface 7a is refracted in the collecting direction in the thickness direction of the first light guiding section 5 and enters the inside of the first light guiding section 5.

[0034] That is, in this incident section 7, the shape of the convex lens surface constituting the incident surface 7a is controlled so that the degree of concentration of the light L radially emitted from the light source 3 increases with increasing distance from the optical axis AX in the thickness direction of the first light-guiding section 5.

[0035] As a result, light L entering the first light-guiding section 5 from the incident surface 7a (incident section 7) is guided toward the reflecting section 8 while being diffused in the width direction of the first light-guiding section 5, in accordance with the shape of the first light-guiding section 5, the thickness of which gradually increases from one end side to the other end side of the first light-guiding section 5 described above.

[0036] As shown in Figures 5 and 8, the reflecting section 8 has a reflecting surface 8a inclined at a predetermined angle (45° with respect to the optical axis AX in this embodiment) toward one direction between the other end side of the first light-guiding section 5 and one end side of the second light-guiding section 6.

[0037] The reflecting surface 8a has a shape curved in one direction on both sides in the width direction across the optical axis AX to match the shape of the other end side of the first light guiding section 5. On the other hand, the reflecting surface 8a has a convexly curved shape in a cross section in the thickness direction of the reflecting section 8 parallel to the optical axis AX. However, since the reflecting surface 8a is a surface that totally reflects the light L guided inside the first light guiding section 5, the reflecting surface 8a is curved concavely with respect to the incident direction of the light L.

[0038] As shown in FIG. 13, the reflecting section 8 reflects the light L incident on the reflecting surface 8a towards the second light guiding section 6 while collecting the light L in the width direction.

[0039] As a result, the light L reflected by the reflecting surface 8a (reflecting section 8) is guided from one end side to the other end side of the second light guiding section 6 while being collimated in the width direction of the second light guiding section 6.

[0040] On the other hand, in the reflecting section 8, as shown in Figs. 11 and 12, the light L incident on the reflecting surface 8a is reflected toward the second light guiding section 6 while being collected in the thickness direction.

[0041] As a result, the light L reflected by the reflecting surface 8a (reflecting section 8) is guided from one end side to the other end side of the second light guiding section 6 while being collimated in the thickness direction of the second light guiding section 6.

[0042] In addition, in the reflecting section 8, in order to collimate the light L reflected by the reflecting surface 8a in the thickness direction of the second light-guiding section 6, the reflecting surface 8a may be divided into a plurality of reflecting regions (indicated by dashed lines in FIG. 12 in the vertical direction) and the light L reflected toward the second light-guiding section 6 may be collimated while controlling the reflection direction of the light L incident on each reflecting region.

[0043] 5 and 6, the emission section 9 has an emission surface 9a on the other end side of the second light guiding section 6. The emission surface 9a is formed of a flat surface (plane) perpendicular to the one direction.

[0044] In the emission portion 9, the light L is emitted from the emission surface 9a to the outside of the second light guide portion 6 (light guide body 4). This makes it possible for the emission surface 9a to function as a light emitting surface of the vehicle lamp 1 and emit light.

[0045] The emission section 9 may be configured to have a plurality of diffusion cuts (not shown) for diffusing the light L emitted from the emission surface 9a to the outside.

[0046] Examples of the diffusion cut include a lens cut called a flute cut or a fisheye cut, and an uneven structure formed by applying a knurling process, a graining process, etc. By adjusting the shape of the diffusion cut, etc., it is possible to control the degree of diffusion of the light L emitted from the emission surface 9a.

[0047] In addition, the vehicle lamp 1 of this embodiment may be configured to have a diffusion lens 50 provided in front of the emission part 9 to diffuse the light L emitted from the emission surface 9a to the outside, as shown in Fig. 15. Furthermore, in the vehicle lamp 1 of this embodiment, the diffusion lens 50 and the light guide 4 may be connected via a connection part 51, as shown in Fig. 16.

[0048] In the vehicle lamp 1 of this embodiment having the above-mentioned configuration, it is possible to eliminate the difference in brightness between the vicinity of the optical axis AX of the light L emitted from the light source 3 and its surroundings, and to guide more uniform light L through the light guide 4, without providing multiple reflection cuts in the light guide 4.

[0049] Therefore, in the vehicle lamp 1 of this embodiment, the emission surface 9a of the light guide 4 can emit light more uniformly, and the appearance when lit can be improved.

[0050] Furthermore, in the vehicle lamp 1 of this embodiment, it is possible to eliminate uneven brightness (light emission) by using one light guide 4 for light L emitted from one light source 3 without increasing the number of parts.

[0051] In the vehicle lamp 1 of this embodiment, in order to improve the appearance of the above-mentioned exit surface 9a when viewed from a direction other than the front, the light-emitting unit 2 may be provided with a surface 4a in the middle of the light guide 4 for discharging stray light L' so that stray light L' that is not light distribution controlled does not reach the exit surface 9a, as shown in, for example, FIG. 14.

[0052] The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0053] For example, in addition to the above-described vehicular lamp 1, it is possible to employ the configuration of a vehicular lamp 1A as shown in FIG.

[0054] Specifically, this vehicle lamp 1A includes a light guide 4A as shown in FIG. 17, instead of the light guide 4 included in the light emitting unit 2, and a reflector 10.

[0055] The light emitting units 2 are arranged side by side in the width direction, and have a structure in which adjacent light guides 4A are connected to each other and adjacent reflectors 10 are connected to each other.

[0056] The light guide 4A has a configuration in which the second light guide section 6, the reflecting section 8, and the exit section 9 are omitted from the configuration of the light guide 4. Meanwhile, the light guide 4A has a flat (planar) exit surface 5a at the other end side of the first light guide section 5 and perpendicular to the optical axis AX.

[0057] The reflector 10 has a reflecting surface 10a facing the exit surface 5a of the first light guiding section 5. Similar to the reflecting surface 8a, the reflecting surface 10a has a shape curved in one direction on both sides in the width direction across the optical axis AX in accordance with the shape of the other end side (exit surface 5a) of the first light guiding section 5. On the other hand, the reflecting surface 10a has a shape curved in a concave shape in a cross section in the thickness direction of the reflector 10 parallel to the optical axis AX.

[0058] In the vehicle lamp 1A having the above-mentioned configuration, the light L emitted from the emission surface 5a of the first light guiding section 5 is reflected by the reflecting surface 10a of the reflector 10 in one direction.

[0059] In this configuration, as in the above-described vehicle lamp 1, it is possible to eliminate the difference in brightness between the vicinity of the optical axis AX of the light L emitted from the light source 3 and its surroundings without providing multiple reflection cuts in the light guide 4A, while guiding more uniform light L through the light guide 4A and uniformly reflecting the light in one direction by the reflective surface 10a of the reflector 10.

[0060] Therefore, in this vehicle lamp 1A, the front side of the reflector 10 can be used as a light emitting surface to emit light uniformly, and the appearance when lit can be improved.

[0061] Moreover, the above-mentioned diffusing lens 50 may be provided in front of the reflector 10 to diffuse the light L reflected by the reflecting surface 10a of the reflector 10.

[0062] The orientation in which the vehicle lamps 1, 1A are arranged is not particularly limited, and for example, it is possible to arrange the vehicle lamp 1 so that its up-down direction is reversed, or so that its up-down direction is horizontal.

[0063] Moreover, in the above-mentioned vehicle lamp 1, 1A, an emission surface 9a (emission portion 9) is provided on the other end side of the above-mentioned second light guiding portion 6. In this case, the direction (forward) of the light L emitted from the emission surface 9a (emission portion 9) coincides with the one direction.

[0064] On the other hand, the light guide 4 may be extended by adding another reflecting surface (reflecting portion) or light guide portion between the other end side of the second light guide portion 6 and the exit surface 9a (exit portion 9). In this case, the direction (forward) of the light L finally emitted from the exit surface 9a (exit portion 9) may be different from the one direction.

[0065] The vehicle lighting fixtures to which the present invention can be applied are not particularly limited, and the present invention can be widely applied to, for example, tail lights, position lights, brake lights, back lights, daytime running lights (DRLs), turn signal lights, side marker lamps, etc.

[0066] Moreover, the color of the light emitted by the light source 3 can be changed as appropriate depending on the application of the vehicle lamp, such as red light, white light, or orange light. [Explanation of symbols]

[0067] Reference Signs List 1, 1A... Vehicle lamp 2... Light-emitting unit 3... Light source 4... Light guide 5... First light guide section 6... Second light guide section 7... Incident section 8... Reflecting section 9... Emitting section 10... Reflector L... Light AX... Optical axis

Claims

1. A light source; a light guide portion that guides the light emitted from the light source from one end side to the other end side; an input portion that inputs the light emitted from the light source into the light guiding portion from one end side of the light guiding portion; a reflecting section that reflects the light guided toward the other end side of the light guide section toward one direction substantially perpendicular to the optical axis of the light emitted from the light source, the light guiding section has a shape in which a width gradually increases from the one end side toward the other end side, and both sides in a width direction across the optical axis are curved toward the one direction, the entrance portion has an entrance surface facing the light source at a center of one end side of the light guide portion, the entrance surface has a shape in which both sides in a width direction across the optical axis are curved toward the one direction, the entrance surface is curved concavely when the light guiding unit is viewed from the one direction, and the entrance surface has a shape that is curved convexly in a cross section in a thickness direction of the light guiding unit that is parallel to the optical axis, the reflecting portion has a reflecting surface inclined toward the one direction at the other end side of the light guiding portion, The reflective surface has a shape curved toward the one direction on both sides in a width direction across the optical axis.

2. The light guiding portion has a shape in which a thickness gradually increases from the one end side toward the other end side, 2. The vehicle lamp according to claim 1, wherein the reflection surface has a convexly curved shape in a cross section of the reflection portion in a thickness direction parallel to the optical axis.

3. a light guide including the light guide portion, the incident portion, and the reflecting portion; 2. The vehicle lamp according to claim 1, wherein the light guide includes a light guide portion that guides the light reflected by the reflecting portion toward the one direction, and an exit portion that emits the light guided toward the one direction to an outside of the light guide portion.

4. The vehicular lamp according to claim 3 , wherein the light exit portion has a flat light exit surface perpendicular to the one direction.

5. a plurality of light emitting units each including the light source and the light guide; 4. The vehicle lamp according to claim 3, wherein the plurality of light emitting units are arranged side by side in the width direction, and adjacent ones of the light guides are connected to each other.

6. a light guide including the light guide portion and the incident portion; A reflector that constitutes the reflecting portion, The vehicle lamp according to claim 1 , wherein the reflector has the reflective surface facing the other end of the light guide portion.

7. a plurality of light emitting units each including the light source, the light guide, and the reflector; 7. The vehicle lamp according to claim 6, wherein the plurality of light-emitting units are arranged side by side in the width direction, and adjacent ones of the light guides are connected to each other, and adjacent ones of the reflectors are connected to each other.

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