Vehicle lamp

Abstract

Provided is a vehicle lamp. The light guide portion has a shape in which the width gradually increases from the first end toward the second end, and both sides in the width direction sandwiching the optical axis are bent in one direction. The incident portion has an incident surface facing the light source at a center portion of the first end of the light guide portion. The incident surface is curved in one direction across both sides in the width direction of the optical axis, is curved in a concave shape when the light guide portion is viewed from the one direction, and is curved in a convex shape in a cross-section in the thickness direction of the light guide portion parallel to the optical axis. The reflecting portion has a reflecting surface inclined in one direction at a second end of the light guide portion. The reflecting surface has a shape that bends in one direction across both sides in the width direction of the optical axis.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on Japanese Patent Application No. 2023-111792 filed on July 6, 2023, the contents of which are incorporated herein by reference. Technical Field

[0003] The invention relates to a vehicle lamp. Background Art

[0004] Conventionally, as a vehicle lamp mounted on a vehicle, there is known a structure in which a light source such as a light emitting diode (LED) and a light guide such as an inner lens are combined (for example, refer to Japanese Patent Application Publication No. 2016-85827 and Japanese Patent Application Publication No. 2021-190342).

[0005] In such a vehicle lamp, light emitted from a light source is incident on the inside of the light guide from the incident surface of the light guide, and while the light is guided inside the light guide, the light is emitted from the exit surface of the light guide to the outside of the light guide. Thus, the exit surface of the light guide can be used as the light emitting surface of the vehicle lamp to emit light.

[0006] However, although the above-mentioned LED has high directivity (straightness), it has the characteristic that light is difficult to diffuse (Lambertian property). Therefore, in the vehicle lamp, due to the brightness difference between the vicinity of the optical axis of the light emitted from the light source and its periphery, it is easy to produce so-called brightness (light emission) unevenness, in which the part of the light guide body corresponding to the vicinity of the optical axis of the LED appears to emit stronger light than the peripheral part.

[0007] In contrast, in existing vehicle lamps, multiple reflective cutoff portions are provided on the light guide, and while the light reflected by these multiple reflective cutoff portions is guided toward the exit surface, the light is diffused by controlling the light distribution of the multiple reflective cutoff portions, thereby obtaining uniform light emission with less brightness (luminescence) unevenness on the exit surface of the light guide.

[0008] However, in a structure in which light distribution is controlled by utilizing the above-mentioned multiple reflection cutoffs while light emitted from a point of light source is guided inside the light guide while the light output surface of the light guide is surface-emitting, light for which light distribution control is performed sometimes becomes stray light between the multiple reflection cutoffs and leaks to the outside.

[0009] In this case, when the light-emitting surface of the light guide is observed from a direction other than the front view, uneven brightness (luminescence) occurs due to the stray light, and the appearance of the vehicle lamp, especially when lit, deteriorates. In addition, processing management is required (enabled).

[0010] On the other hand, when other components such as a light diffusion component are added to eliminate the occurrence of uneven brightness (light emission), the cost increases due to the increase in the number of components. Summary of the invention

[0011] An aspect of the present invention provides a vehicle lamp that can emit light more uniformly by eliminating the brightness difference between the vicinity of the optical axis of light emitted from a light source and its periphery without using a plurality of reflection cut-off portions.

[0012] The embodiment of the present invention provides the following structures.

[0013] (1) A vehicle lamp having:

[0014] light source;

[0015] a light guide portion that guides light emitted from the light source from a first end located at one end side to a second end located at the other end side;

[0016] an incident portion configured to allow light emitted from the light source to be incident from a first end of the light guide portion to an interior of the light guide portion; and

[0017] a reflecting portion that reflects the light guided toward the second end of the light guiding portion toward a direction substantially orthogonal to the optical axis of the light emitted from the light source,

[0018] The light guide portion has a shape in which the width gradually increases from the first end toward the second end, and both sides in the width direction sandwiching the optical axis are bent toward the one direction.

[0019] The incident portion has an incident surface facing the light source at the center of the first end of the light guide portion.

[0020] The incident surface has a shape in which both sides in the width direction sandwiching the optical axis are curved toward the one direction, curved into a concave shape when the light guide portion is viewed from the one direction, and curved into a convex shape in a cross section in the thickness direction of the light guide portion parallel to the optical axis,

[0021] The reflecting portion has a reflecting surface inclined toward the one direction at the second end of the light guiding portion,

[0022] The reflecting surface has a shape in which both sides in the width direction sandwiching the optical axis are curved in the one direction.

[0023] (2) The vehicle lamp according to (1) above, wherein:

[0024] The light guide portion has a shape in which the thickness gradually increases from the first end toward the second end.

[0025] The reflecting surface has a shape that is curved in a convex shape in a cross section in a thickness direction of the reflecting portion parallel to the optical axis.

[0026] (3) The vehicle lamp according to (1) above, wherein:

[0027] A light guide is provided, the light guide comprising the light guide portion, the incident portion and the reflective portion,

[0028] The light guide includes a light guide portion that guides the light reflected by the reflection portion toward the one direction, and an emission portion that emits the light guided toward the one direction toward the outside of the light guide portion.

[0029] (4) The vehicle lamp according to the above (3), wherein the emission portion has a flat emission surface that is orthogonal to the one direction.

[0030] (5) The vehicle lamp as described in (3) above is characterized in that it has a plurality of light emitting units including the light source and the light guide.

[0031] The plurality of light emitting units have a structure in which they are arranged side by side in the width direction and adjacent light guides of the light guides are connected to each other.

[0032] (6) The vehicle lamp according to the above (1), characterized in that it has:

[0033] a light guide body including the light guide portion and the incident portion; and

[0034] a reflector constituting the reflecting portion,

[0035] The reflector has the reflecting surface facing the second end of the light guiding portion.

[0036] (7) The vehicle lamp according to (6) above, characterized in that:

[0037] There are multiple light-emitting units, which include the light source, the light guide and the reflector. The multiple light-emitting units have the following structure: they are arranged in the width direction, and the adjacent light guides of the light guides are connected to each other, and the adjacent reflectors of the reflectors are connected to each other.

[0038] According to an aspect of the present invention, a vehicle lamp is provided that can emit light with more uniform light by eliminating the brightness difference between the vicinity of the optical axis of light emitted from a light source and its periphery without using a plurality of reflection cut-off portions. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a perspective view showing the structure of a vehicle lamp according to one embodiment of the present invention.

[0040] Figure 2 It is a front view showing the structure of the vehicle lamp.

[0041] Figure 3 It is a plan view showing the structure of a vehicle lamp.

[0042] Figure 4 It is a side view showing the structure of a vehicle lamp.

[0043] Figure 5 It is an upper perspective view showing the structure of a light emitting unit included in the vehicle lamp.

[0044] Figure 6 It is a bottom perspective view showing the structure of a light emitting unit included in the vehicle lamp.

[0045] Figure 7 It is a bottom view showing the structure of the incident part of the light emitting unit.

[0046] Figure 8 It is a plan view showing the structure of the reflection part of the light emitting unit.

[0047] Fig. 9 This is a front view showing the optical path of light incident from the incident portion of the light emitting unit.

[0048] Fig.10 Yes Fig. 9 The enclosed portion X shown in FIG. 1 is an enlarged front view.

[0049] Fig.11 Is based on Fig. 9 2 is a cross-sectional view of the optical path of light in the cross section of the light emitting unit 2 along the line segment XI-XI shown in FIG.

[0050] Fig.12 Yes Fig.11 An enlarged cross-sectional view of the enclosed portion XII is shown in FIG.

[0051] Fig.13 It is a plan view showing the optical path of light reflected by the reflecting portion of the light emitting unit.

[0052] Fig.14 It is a cross-sectional view showing the optical path of stray light of the light emitting unit.

[0053] Fig.15 It is a cross-sectional view showing a modified example of the vehicle lamp.

[0054] Fig.16 It is a cross-sectional view showing a modified example of the vehicle lamp.

[0055] Fig.17 It is a cross-sectional view showing the structure of another vehicle lamp. DETAILED DESCRIPTION

[0056] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0057] In the drawings used in the following description, in order to make each component easier to see, the scale of the dimensions may differ between components, and the dimensional ratio of each component may not necessarily be the same as the actual one.

[0058] As one embodiment of the present invention, for example Figure 1 to Figure 17 The vehicle lamp 1 shown will be described.

[0059] in addition, Figure 1 It is a perspective view showing the structure of the vehicle lamp 1 . Figure 2 It is a front view showing the structure of the vehicle lamp 1 . Figure 3 It is a plan view showing the structure of the vehicle lamp 1 . Figure 4 It is a side view showing the structure of the vehicle lamp 1 . Figure 5 It is an upper perspective view showing the structure of the light emitting unit 2 included in the vehicle lamp 1 . Figure 6 It is a bottom perspective view showing the structure of the light emitting unit 2 included in the vehicle lamp 1 . Figure 7 It is a bottom view showing the structure of the incident portion 7 of the light emitting unit 2 . Figure 8 It is a plan view showing the structure of the reflection part 8 of the light emitting unit 2. Fig. 9 It is a front view showing the optical path of the light L incident from the incident portion 7 of the light emitting unit 2 . Fig.10 Yes Fig. 9 The enclosed portion X shown in FIG. 1 is an enlarged front view. Fig.11 Is based on Fig. 9 2 is a cross-sectional view of the optical path of the light L in the cross section of the light emitting unit 2 along the line segment XI-XI shown in FIG. Fig.12 Yes Fig.11 An enlarged cross-sectional view of the enclosed portion XII shown in FIG. Fig.13 It is a plan view showing the optical path of the light L reflected by the reflecting portion 8 of the light emitting unit 2 . Fig.14 2 is a cross-sectional view showing the optical path of stray light L′ of the light emitting unit 2 . Fig.15 It is a cross-sectional view showing a modified example of the vehicle lamp 1 . Fig.16 It is a cross-sectional view showing a modified example of the vehicle lamp 1 . Fig.17 It is a cross-sectional view showing the structure of another vehicle lamp 1A.

[0060] In addition, in the accompanying drawings shown below, an XYZ vertical coordinate system is set, and the X-axis direction is represented as the front-to-back direction (length direction) of the vehicle lamp 1, the Y-axis direction is represented as the left-right direction (width direction) of the vehicle lamp 1, and the Z-axis direction is represented as the up-down direction (height direction) of the vehicle lamp 1.

[0061] like Figure 1 to Figure 4 As shown, the vehicle lamp 1 of the present embodiment includes a plurality of (three in the present embodiment) light emitting units 2, and the plurality of light emitting units 2 have a structure in which they are integrated in a state of being aligned in the width direction.

[0062] Each light emitting unit 2 includes a light source 3 and a light guide 4 that guides light emitted from the light source 3. The light emitting units 2 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.

[0063] That is, the light guide 4 constituting each light emitting unit 2 is constituted by one light guide member 40 in which adjacent light guides 4 are connected to each other. On the other hand, the light source 3 constituting each light emitting unit 2 is provided corresponding to the light guide 4, respectively.

[0064] The light source 3 is constituted by a light emitting element such as an LED that emits light L radially.

[0065] The light source 3 radially emits light L from one surface (the upper surface in this embodiment) of a mounting substrate (not shown) in a direction perpendicular to the one surface of the mounting substrate (upward in this embodiment).

[0066] The light guide 4 (light guide member 40 ) is made of, for example, a transparent resin such as polycarbonate or acrylic, or a light-transmitting member such as glass.

[0067] like Figures 5 to 8 As shown, the light guide 4 includes: a first light guide portion 5 and a second light guide portion 6; an incident portion 7, which is located at a first end of the first light guide portion 5 on one end side (the lower end side in the present embodiment), so that the light L emitted from the light source 3 is incident on the inside of the first light guide portion 5; a reflecting portion 8, which is located between a second end of the first light guide portion 5 on the other end side (the upper end side in the present embodiment) and a first end of the second light guide portion 6 on one end side (the rear end side in the present embodiment), and reflects the light L guided inside the first light guide portion 5 toward the second light guide portion 6; and an emitting portion 9, which is located at a second end of the second light guide portion 6 on the other end side (the front end side in the present embodiment), and emits the light L guided inside the second light guide portion 6 to the outside of the second light guide portion 6.

[0068] The first light guide 5 is a part that guides the light L incident from the incident portion 7 to the reflecting portion 8. The first light guide 5 has a shape in which the width gradually increases from one end side to the other end side, and the two sides of the width direction of the optical axis AX sandwiching the light L emitted from the light source 3 are bent in a direction (in this embodiment, forward) that is substantially orthogonal to the optical axis AX (orthogonal in this embodiment). In addition, the first light guide 5 has a shape in which the thickness gradually increases from one end side to the other end side.

[0069] In addition, "one direction" means a direction that serves as a reference in a direction substantially orthogonal to the optical axis AX of the light L emitted from the light source 3. In the present embodiment, 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) may be used as one direction depending on the arrangement direction of the light emitting unit 2 (light source 3 and light guide 4).

[0070] The direction substantially orthogonal to the optical axis AX is not limited to the direction orthogonal to the optical axis AX (the direction forming 90° with respect to the optical axis AX), and includes, for example, the direction forming 90°±5° with respect to the optical axis AX.

[0071] The second light guide portion 6 is a portion that guides the light reflected by the reflector 8 to the emission portion 9. The second light guide portion 6 has a constant width and thickness corresponding to the reflector 8, and has a shape that protrudes in one direction. In addition, the light guide member 40 has a structure in which the second light guide portions 6 of the light guide bodies 4 adjacent to each other are connected.

[0072] like Figure 6 and Figure 7 As shown, the incident portion 7 has an incident surface 7 a at a central portion of one end side of the first light guide portion 5 facing the light source 3 .

[0073] The incident surface 7a is consistent with the shape of one end side of the first light guide 5, and has a shape that is bent in one direction on both sides of the width direction of the optical axis AX. On the other hand, when the first light guide 5 is observed from one direction, that is, in the main view of the light guide 4, the incident surface 7a has a lens shape (concave lens surface) that is bent into a concave shape. On the other hand, in the cross section of the first light guide 5 in the thickness direction parallel to the optical axis AX, that is, in the vertical cross section of the light guide 4, the incident surface 7a has a lens shape (convex lens surface) that is bent into a convex shape.

[0074] In the incident portion 7, as Fig. 9 and Fig.10As shown, among the light L radially emitted from the light source 3, the light L that passes through the central portion of the incident surface 7a in the width direction of the first light guide portion 5 is refracted in a direction away from the optical axis AX (hereinafter referred to as the "diffusion direction") or is incident on the interior of the first light guide portion 5 without being refracted, and the light L that passes through the peripheral portion of the incident surface 7a is refracted in a direction close to the optical axis AX (hereinafter referred to as the "convergence direction") and is incident on the interior of the first light guide portion 5.

[0075] That is, in the incident portion 7, the shape of the concave lens surface constituting the incident surface 7a is controlled so that in the width direction of the first light guide portion 5, as the distance from the optical axis AX increases, the diffusion degree of the light L radially emitted from the light source 3 decreases (the adjacent intervals between the light rays become narrower).

[0076] Thus, the light L incident into the interior of the first light guide portion 5 from the incident surface 7a (incident portion 7) diffuses in the width direction of the first light guide portion 5 and guides toward the reflecting portion 8, corresponding to the shape of the first light guide portion 5 whose width gradually increases from one end side to the other end side of the first light guide portion 5.

[0077] On the other hand, in the incident portion 7, as Fig.11 and Fig.12 As shown, the light L incident on the incident surface 7 a is refracted in a convergent direction in the thickness direction of the first light guide portion 5 and is incident on the inside of the first light guide portion 5 .

[0078] That is, in the incident portion 7 , the shape of the convex lens surface constituting the incident surface 7 a is controlled so that the degree of convergence of the light L radially emitted from the light source 3 increases with distance from the optical axis AX in the thickness direction of the first light guide portion 5 .

[0079] Thus, the light L incident into the interior of the first light guide portion 5 from the incident surface 7a (incident portion 7) is diffused in the width direction of the first light guide portion 5 and guided toward the reflecting portion 8, corresponding to the shape of the first light guide portion 5 in which the thickness gradually increases from one end side to the other end side of the first light guide portion 5.

[0080] like Figure 5 and Figure 8 As shown, the reflector 8 has a reflective 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 of the first light guide 5 and one end of the second light guide 6 .

[0081] The reflecting surface 8a has a shape that is bent in one direction on both sides of the width direction sandwiching the optical axis AX, corresponding to the shape of the other end side of the first light guide 5. On the other hand, the reflecting surface 8a has a shape that is bent into a convex shape in a cross section in the thickness direction of the reflecting portion 8 parallel to the optical axis AX. Among them, since the reflecting surface 8a is a surface that totally reflects the light L guided inside the first light guide 5, it becomes a reflecting surface 8a that is bent into a concave shape relative to the incident direction of the light L.

[0082] In the reflection part 8, as Fig.13 As shown, the light L incident on the reflecting surface 8 a is converged in the width direction and reflected toward the second light guiding portion 6 .

[0083] Thus, the light L reflected by the reflecting surface 8 a (reflecting portion 8 ) is guided from one end side to the other end side of the second light guiding portion 6 while being parallelized (collimated) in the width direction of the second light guiding portion 6 .

[0084] On the other hand, in the reflecting portion 8, as Fig.11 and Fig.12 As shown, the light L incident on the reflecting surface 8 a is converged in the thickness direction and reflected toward the second light guiding portion 6 .

[0085] Thus, the light L reflected by the reflecting surface 8 a (reflecting portion 8 ) is guided from one end side to the other end side of the second light guiding portion 6 while being parallelized (collimated) in the thickness direction of the second light guiding portion 6 .

[0086] In the reflecting portion 8, in order to parallelize (collimate) the light L reflected by the reflecting surface 8a in the thickness direction of the second light guide portion 6, the reflecting surface 8a is arranged in a plurality of reflecting regions (in the vertical direction from Fig.12 ), while controlling the reflection direction of the light L incident on each reflection area, the light L reflected toward the second light guide portion 6 is parallelized (collimated).

[0087] like Figure 5 and Figure 6 As shown, the emission portion 9 has an emission surface 9a on the other end side of the second light guide portion 6. The emission surface 9a is composed of a flat surface (plane) orthogonal to one direction.

[0088] 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). Thus, the emission surface 9a can be made to emit light as the light emitting surface of the vehicle lamp 1.

[0089] In addition, the emission section 9 is provided with a plurality of diffusion cutoff sections (not shown) for diffusing the light L emitted from the emission surface 9 a to the outside.

[0090] As the diffusion cut-off portion, for example, a lens cut-off portion called a groove cut or a fisheye cut, a concave-convex structure formed by knurling or pleating, etc. In addition, by adjusting the shape of the diffusion cut-off portion, the diffusion degree of the light L emitted from the exit surface 9a can be controlled.

[0091] In addition, in the vehicle lamp 1 of the present embodiment, Fig.15 As shown in FIG. 1 , a diffusion lens 50 may be provided in front of the emission portion 9 to diffuse the light L emitted from the emission surface 9a to the outside. Fig.16 As shown, the diffuser lens 50 and the light guide 4 may be connected via a connecting portion 51 .

[0092] In the vehicle lamp 1 of the present embodiment having the above-described structure, it is not necessary to provide a plurality of reflection cutoff portions on the light guide 4 , thereby eliminating the brightness difference between the vicinity of the optical axis AX of the light L emitted from the light source 3 and its periphery, and at the same time, the light guide 4 guides the light L more uniformly.

[0093] Therefore, in the vehicle lamp 1 of the present embodiment, the emission surface 9a of the light guide 4 can emit light more uniformly, and the appearance when lit can be improved.

[0094] Furthermore, in the vehicle lamp 1 of the present embodiment, the number of components is not increased, and one light guide 4 is used for the light L emitted from one light source 3, thereby eliminating the occurrence of uneven brightness (light emission).

[0095] In addition, in the vehicle lamp 1 of the present embodiment, in order to improve the appearance of the emission surface 9a when viewed from a direction other than the front, in the light emitting unit 2, for example, Fig.14 As shown, a surface 4 a for discharging stray light L′ may be provided in the middle of the light guide 4 so that the stray light L′ for which light distribution control is not performed does not reach the emission surface 9 a.

[0096] In addition, the present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

[0097] For example, unlike the above-mentioned vehicle lamp 1, a Fig.17 The structure of the vehicle lamp 1A is shown.

[0098] Specifically, the vehicle lamp 1A includes a light guide 4 instead of the light guide 4 of the light emitting unit 2. Fig.17 The light guide 4A and the reflector 10 are shown.

[0099] The plurality of 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.

[0100] The light guide 4A is the structure of the light guide 4 except that the second light guide 6, the reflector 8 and the emission section 9 are omitted. On the other hand, the light guide 4A has a flat (plane) emission surface 5a at the other end of the first light guide 5 and perpendicular to the optical axis AX.

[0101] The reflector 10 has a reflecting surface 10a that is opposite to the exit surface 5a of the first light guide unit 5. The reflecting surface 10a, like the reflecting surface 8a, has a shape that is curved in one direction on both sides in the width direction sandwiching the optical axis AX, corresponding to the shape of the other end side (exit surface 5a) of the first light guide unit 5. On the other hand, the reflecting surface 10a has a shape that is curved in a concave shape in a cross section in the thickness direction of the reflector 10 parallel to the optical axis AX.

[0102] In the vehicle lamp 1A having the above-described structure, the light L emitted from the emission surface 5 a of the first light guide portion 5 is reflected in one direction by the reflection surface 10 a of the reflector 10 .

[0103] In the case of this structure, similar to the above-mentioned vehicle lamp 1, multiple reflection cut-off portions do not need to be provided on the light guide 4A, and the brightness difference between the vicinity of the optical axis AX of the light L emitted from the light source 3 and its periphery is eliminated, and while more uniform light L is guided through the light guide 4A, it is uniformly reflected in one direction through the reflection surface 10a of the reflector 10.

[0104] Therefore, in the vehicle lamp 1A, the front side of the reflector 10 can be used as a light emitting surface, and the light can be emitted uniformly, so that the appearance when lit can be improved.

[0105] In addition, the diffusion lens 50 may be provided in front of the reflector 10 to diffuse the light L reflected by the reflection surface 10 a of the reflector 10 .

[0106] The arrangement direction of the vehicle lamps 1 and 1A is not particularly limited. For example, the vehicle lamps 1 may be arranged in the reverse direction or in the horizontal direction.

[0107] In the vehicle lamp 1, 1A, an emission surface 9a (emission portion 9) is provided on the other end side of the second light guide portion 6. At this time, the direction (forward) of the light L emitted from the emission surface 9a (emission portion 9) coincides with one direction.

[0108] On the other hand, the light guide 4 may be a structure that is extended by further adding another reflecting surface (reflecting portion) or a 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 also be a direction different from one direction.

[0109] In addition, there is no particular limitation on the vehicle lighting fixtures to which the present invention is applicable. For example, taillights (rear lights) or vehicle width lights (position lights), brake lights, reversing lights, daytime running lights (DRL), direction indicators (turn signals), side headlights, etc., can be widely applied to the present invention.

[0110] In addition, the color of the light emitted by the light source 3 can be appropriately changed to red light, white light, orange light, etc. according to the purpose of the vehicle lamp.

Claims

1. A vehicle lamp, characterized in that: have: light source; A light guide portion that guides light emitted from the light source from a first end located at one end side to a second end located at the other end side; an incident portion configured to allow light emitted from the light source to be incident from a first end of the light guide portion to an interior of the light guide portion; and a reflecting portion that reflects the light guided toward the second end of the light guiding portion toward a direction substantially orthogonal to the optical axis of the light emitted from the light source, The light guide portion has a shape in which the width gradually increases from the first end toward the second end, and both sides in the width direction sandwiching the optical axis are bent toward the one direction. The incident portion has an incident surface facing the light source at the center of the first end of the light guide portion. The incident surface has a shape in which both sides in the width direction sandwiching the optical axis are curved toward the one direction, curved into a concave shape when the light guide portion is viewed from the one direction, and curved into a convex shape in a cross section in the thickness direction of the light guide portion parallel to the optical axis, The reflecting portion has a reflecting surface inclined toward the one direction at the second end of the light guiding portion, The reflecting surface has a shape in which both sides in the width direction sandwiching the optical axis are curved in the one direction.

2. The vehicle lamp according to claim 1, characterized in that: The light guide portion has a shape in which the thickness gradually increases from the first end toward the second end. The reflecting surface has a shape that is curved in a convex shape in a cross section in a thickness direction of the reflecting portion parallel to the optical axis.

3. The vehicle lamp according to claim 1, characterized in that: The vehicle lamp has a light guide body, which includes the light guide portion, the incident portion, and the reflecting portion. The light guide includes a light guide portion that guides the light reflected by the reflection portion toward the one direction, and an emission portion that emits the light guided toward the one direction toward the outside of the light guide portion.

4. The vehicle lamp according to claim 3, characterized in that: The emission portion has a flat emission surface that is orthogonal to the one direction.

5. The vehicle lamp according to claim 3, characterized in that: The vehicle lamp has a plurality of light emitting units, which include the light source and the light guide. The plurality of light emitting units have a structure in which they are arranged side by side in the width direction and adjacent light guides among the light guides are connected to each other.

6. The vehicle lamp according to claim 1, characterized in that: The vehicle lamp has: a light guide body including the light guide portion and the incident portion; and a reflector constituting the reflecting portion, The reflector has the reflecting surface facing the second end of the light guiding portion.

7. The vehicle lamp according to claim 6, characterized in that: The vehicle lamp has a plurality of light-emitting units, wherein the plurality of light-emitting units include the light source, the light guide and the reflector. The plurality of light emitting units have a structure in which they are arranged side by side in the width direction, the adjacent light guides among the light guides are connected to each other, and the adjacent reflectors among the reflectors are connected to each other.

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