Vehicle lighting

Abstract

This invention provides a technology that makes a rod-shaped light guide emit light more uniformly along its longitudinal direction. [Solution] The light guide 20 of the vehicle light fixture 1 includes a rod-shaped light-emitting part 40 and a light supply part 42. The light supplied from the light supply part 42 to the light-emitting part 40 is guided through the interior of the light-emitting part 40 and emitted from its circumferential surface. The light supply part 42 includes a light-incident part 44 into which light from a light source is incident, a rod-shaped first connecting part 46 connected to the circumferential surface 40c of the light-emitting part 40 so that the light from the light-incident part 44, incident on the light-emitting part 40 from the first connecting part 46, is directed toward one end of the light-emitting part 40, a rod-shaped second connecting part 48 connected to the circumferential surface 40c of the light-emitting part 40 so that the light from the light-incident part 44, incident on the light-emitting part 40 from the second connecting part 48, is directed toward the other end of the light-emitting part 40, and a plate-shaped part 50 that is thinner than the first connecting part 46 and the second connecting part 48 and connected to the respective circumferential surfaces 40c of the light-emitting part 40, the first connecting part 46 and the second connecting part 48.

Description

Technical Field

[0001] The present disclosure relates to vehicle lamps.

Background Art

[0002] Conventionally, a vehicle lamp is known that includes a light source and a rod-shaped light guide disposed such that light from the light source enters from one end surface, and the light guided inside the light guide is emitted forward of the lamp from an emission surface along the longitudinal direction of the light guide (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] It is difficult to cause a rod-shaped light guide to emit light uniformly in the longitudinal direction.

[0005] The present disclosure has been made in such a situation, and one of its exemplary purposes is to provide a technique for causing a rod-shaped light guide to emit light more uniformly in the longitudinal direction.

Means for Solving the Problems

[0006] To solve the above problems, a vehicle lamp according to one aspect of the present invention is a vehicle lamp equipped with a light guide and configured to emit light from a light source to the outside via the light guide, wherein the light guide has a rod shape and includes a light-emitting part that emits light from a light source and a light-supplying part for supplying light from the light source to the light-emitting part. Light supplied from the light supply unit to the light-emitting unit is guided through the interior of the light-emitting unit and emitted from its circumferential surface. The light supply unit includes a light-incident section into which light from a light source is incident; a first connecting section having a rod shape, which is connected to the circumferential surface of the light-emitting unit such that the light from the light-incident section incident on the light-emitting unit from the first connecting section is directed toward one end of the light-emitting unit; a second connecting section having a rod shape, which is located closer to the other end of the light-emitting unit than the first connecting section, and is connected to the circumferential surface of the light-emitting unit such that the light from the light-incident section incident on the light-emitting unit from the second connecting section is directed toward the other end of the light-emitting unit; and plate-like sections that are thinner than the first and second connecting sections and connected to the respective circumferential surfaces of the light-emitting unit, the first connecting section, and the second connecting section. [Effects of the Invention]

[0007] According to this disclosure, a technology can be provided that causes a rod-shaped light guide to emit light more uniformly in the longitudinal direction. [Brief explanation of the drawing]

[0008] [Figure 1] This is a diagram illustrating the problems that the embodiment aims to solve. [Figure 2] This is a schematic front view of a lighting fixture according to an embodiment. [Figure 3] This is an exploded perspective view of the lighting unit. [Figure 4] Figure 3 is a front view of the light guide. [Figure 5] Figure 3 is a rear view of the light guide. [Figure 6] Figure 3 is a magnified view of the light supply unit and its surroundings. [Figure 7] Figure 4 is a magnified view of the light supply unit and its surroundings. [Figure 8] This is a cross-sectional view along line AA in Figure 6. [Figure 9]This is a cross-sectional view of the plate-shaped portion and its surrounding area of ​​a modified light guide. [Modes for carrying out the invention]

[0009] The embodiment is a vehicle lighting device. Before specifically describing the vehicle lighting device of the embodiment, the problem that the embodiment aims to solve will be explained.

[0010] Figure 1 is a diagram illustrating the problems that the embodiment is intended to solve. Figure 1 shows a light guide 220 for a vehicle light fixture. The light guide 220 includes a light-emitting section 240 and a light-supplying section 242. Light from a light source (not shown) is incident on the light-supplying section 242. The light-supplying section 242 supplies light from the light source to the light-emitting section 240. The light-emitting section 240 has a rod-like shape. Light from the light-supplying section 242 is incident on the light-emitting section 240 from its circumferential surface 240c. The light incident on the light-emitting section 240 is guided through the interior of the light-emitting section 240 and then emitted from its circumferential surface 240c.

[0011] Incidentally, if light is incident on one end face of the light-emitting part 240, the light emission may weaken as it approaches the other end face of the light-emitting part 240. In contrast, in the example of Figure 1, as described above, light is incident on the circumferential surface 240c of the light-emitting part 240. Specifically, the light supply unit 242 includes a first connection part 246 and a second connection part 248, both of which are rod-shaped. Light is supplied from the first connection part 46 to one end face side of the light-emitting part 40 (upper side in Figure 1), and from the second connection part 48 to the other end side of the light-emitting part 40 (lower side in Figure 1). As a result, light can be emitted relatively strongly on both the one end face side and the other end face side. However, since it is difficult to supply light to the range 240R1 between the one end face side and the other end face side, the light emission weakens there. The following describes a vehicle lighting device according to an embodiment that solves this problem.

[0012] Hereinafter, the present disclosure will be described with reference to the drawings based on preferred embodiments. The embodiments are illustrative rather than limiting the disclosure, and not all features and combinations thereof described in the embodiments are necessarily essential to the disclosure. The same or equivalent components, members, and processes shown in each drawing are denoted by the same reference numerals, and repeated descriptions are appropriately omitted.

[0013] FIG. 2 is a schematic front view of the vehicle lamp 1 according to the embodiment. The vehicle lamp 1 shown in FIG. 2 may be disposed at the front of the vehicle or at the rear of the vehicle.

[0014] The vehicle lamp 1 includes a lamp body 10, a transparent outer cover 12 that covers the front opening of the lamp body 10, and a lamp unit 16 disposed in a lamp chamber 14 that is a space between the lamp body 10 and the outer cover 12.

[0015] When the vehicle lamp 1 is disposed at the front of the vehicle, the lamp unit 16 can be used as, for example, a DRL (Daytime Running Lamp), a clearance lamp, or a turn signal lamp. In this case, the vehicle lamp 1 may include a headlamp unit (not shown) configured to provide low beam and high beam functions.

[0016] When the vehicle lamp 1 is disposed at the rear of the vehicle, the lamp unit 16 can be used as, for example, a tail lamp, a stop lamp, or a turn signal lamp.

[0017] FIG. 3 is an exploded perspective view of the lamp unit 16. FIG. 4 is a front view of the light guide 20 in FIG. 3. FIG. 5 is a rear view of the light guide 20 in FIG. 3.

[0018] The lamp unit 16 includes a light source unit 18, a light guide 20, a reflector 22, and an inner lens 24.

[0019] The light source unit 18 is, among other things, a socket-type light source unit, and includes a light source 30 and a socket 32 on which the light source 30 is mounted. The socket-type light source unit 18 is configured to be detachable from a lamp body 10 (not shown in FIG. 3).

[0020] The light source 30 is typically an LED (light emitting diode). Note that the socket-type light source unit 18 in which the light source 30 is an LED is also referred to as an LED socket. The light source 30 may be an LD (laser diode), organic EL (electroluminescence), inorganic EL, or others.

[0021] The light guide 20 is a resin member having translucency, and is formed of, for example, an acrylic resin or a polycarbonate resin. The light guide 20 includes a light emitting portion 40 and a light supply portion 42. Light from the light source 30 is incident on the light supply portion 42. The light supply portion 42 is connected to the light emitting portion 40 and supplies the light from the light source 30 to the light emitting portion 40. The light supply portion 42 is preferably connected to the central portion in the longitudinal direction of the light emitting portion 40.

[0022] The light emitting portion 40 has a rod-like shape. The light emitting portion 40 has a first end face 40a, a second end face 40b, and a peripheral surface 40c. The peripheral surface 40c corresponds to the side surface of the light emitting portion 40 that connects the two end faces 40a and 40b of the light emitting portion 40.

[0023] As shown in the drawing, the light emitting portion 40 may have a C-shaped shape, a linear (I-shaped) shape, or other shapes when viewed in the front-rear direction of the lamp.

[0024] A portion of the peripheral surface 40c of the light emitting portion 40 on the rear side of the lamp has a plurality of steps 40d arranged in the longitudinal direction of the light emitting portion 40. The plurality of steps 40d are uneven shapes or appropriate reflection elements formed to totally reflect the light guiding through the inside of the light emitting portion 40 and emit it from the peripheral surface 40c toward the front of the lamp. A known configuration can be adopted for the plurality of steps 40d.

[0025] The light supplied from the light supply unit 42 to the light-emitting unit 40 is guided through the interior of the light-emitting unit 40, reflected by the step 40d, and emitted from the front side of the circumferential surface 40c (the side facing the viewer in the direction perpendicular to the plane of the paper in Figure 4).

[0026] The reflector 22 has a reflective surface 22a facing the front of the luminaire. The reflective surface 22a extends along the light-emitting part 40 and faces the circumferential surface 40c of the light-emitting part 40 on the rear side of the light-emitting part 40. The reflective surface 22a is formed, for example, by a vapor deposition process. The reflector 22 supports the light guide 20 and reflects the light that leaks from the light-emitting part 40 to the rear of the luminaire to the front of the luminaire by the reflective surface 22a. This increases the efficiency of light utilization from the light source 30.

[0027] The inner lens 24 is positioned on the front side of the light guide 20 so as to conceal at least the light-emitting portion 40. The inner lens 24 is light-transmitting and transmits light emitted from the light guide 20. In other words, light from the light source 30 is emitted to the outside of the vehicle light fixture 1 via the light guide 20 and the inner lens 24. The inner lens 24 may be colorless or may have an appropriate color depending on the application of the vehicle light fixture 1.

[0028] The inner lens 24 is configured to diffuse light, although this is not always the case. For example, a diffusing agent may be incorporated into the inner lens 24, or the surface of the inner lens 24 may be given a textured finish to diffuse light. In any case, the inner lens 24 emits light from the light-emitting part 40 of the light guide 20 that is emitted in front of the lamp. The figure labeled 16 in Figure 2 can also be interpreted as showing the light emission of the inner lens 24.

[0029] Next, the light guide 20 will be described in more detail. Figure 6 is an enlarged view of the plate-shaped portion 50 and its surroundings in Figure 3. Figure 7 is an enlarged view of the plate-shaped portion 50 and its surroundings in Figure 4. Figure 8 is a cross-sectional view taken along line AA in Figure 6.

[0030] The light supply unit 42 includes a light incidence unit 44, a first connection unit 46, a second connection unit 48, and a plate-shaped unit 50. The light incidence unit 44 is connected to the first connection unit 46 and the second connection unit 48. The light incidence unit 44 has a light incidence surface 44a facing the light source 30. Light from the light source 30 is incident on the light incidence unit 44 from the light incidence surface 44a. The light incident on the light incidence unit 44 is then incident on the first connection unit 46 and the second connection unit 48.

[0031] In the illustrated example, the light incident portion 44 is rod-shaped, with one end face being the aforementioned light incident surface 44a and the other end face 44b being connected to the first connection portion 46 and the second connection portion 48. However, the light incident portion 44 is curved such that the light incident surface 44a generally faces the rear side of the lamp and the other end face 44b generally faces left to right, and the light source unit 18 (not shown in Figures 6-8) is positioned opposite the end face of the light incident portion 44 such that the emission surface of the light source 30 generally faces the front side of the lamp. The first connection portion 46 and the second connection portion 48 branch off from the light incident portion 44.

[0032] The first connecting portion 46 has a rod-like shape. The first connecting portion 46 is connected to the circumferential surface 40c of the light-emitting portion 40 such that the light from the light-incident portion 44 that enters the light-emitting portion 40 from the first connecting portion 46 is directed toward the first end face 40a side of the light-emitting portion 40. Specifically, the first connecting portion 46 is configured to approach the first end face 40a side of the light-emitting portion 40 as it approaches the connection portion with the light-emitting portion 40. The first connecting portion 46 may be slightly curved convex toward the light-emitting portion 40 side as shown in the figure, or it may be straight.

[0033] The second connecting portion 48 has a rod-like shape. The second connecting portion 48 is connected to the second end face 40b of the light-emitting portion 40 at a position closer to the second end face 40b of the light-emitting portion 40 than the first connecting portion 46. The second connecting portion 48 is connected to the circumferential surface 40c of the light-emitting portion 40 such that the light from the light-incident portion 44 that enters the light-emitting portion 40 from the second connecting portion 48 is directed toward the second end face 40b of the light-emitting portion 40. The second connecting portion 48 may be slightly curved convex toward the light-emitting portion 40 side as shown in the figure, or it may be straight.

[0034] The plate-shaped portion 50 is provided between the light-emitting portion 40, the first connecting portion 46, and the second connecting portion 48, and is connected to the circumferential surfaces of the respective portions 40, 46, and 48. The plate-shaped portion 50 has a roughly triangular shape when viewed in the direction of the front of the luminaire. Due to the presence of the plate-shaped portion 50, light is supplied to the longitudinal range 40R1 of the light-emitting portion 40 to which the plate-shaped portion 50 is connected.

[0035] The plate-like portion 50 has a thickness d1 at least at the connection portion (boundary portion) 50a with the first connection portion 46 and a thickness d2 at the connection portion (boundary portion) 50b with the second connection portion 48 that is thinner than the first connection portion 46 and the second connection portion 48.

[0036] More specifically, the thickness d1 of the connecting portion 50a of the plate-like portion 50 is thinner than the maximum dimension D1 of the first connecting portion 46 in the same direction as the thickness direction of the plate-like portion 50. If the shape of the first connecting portion 46 in a cross section perpendicular to the longitudinal direction of the first connecting portion 46 is circular, then the maximum dimension D1 is the diameter of that circle. Similarly, the thickness d2 of the connecting portion 50b of the plate-like portion 50 is thinner than the maximum dimension D2 of the second connecting portion 48 in the same direction as the thickness direction of the plate-like portion 50. If the shape of the second connecting portion 48 in a cross section perpendicular to the longitudinal direction of the second connecting portion 48 is circular, then the maximum dimension D2 is the diameter of that circle.

[0037] Furthermore, the thickness d1 of the connection portion 50a with the first connection portion 46 and the thickness d2 of the connection portion 50b with the second connection portion 48 may be the same, and the maximum dimension D1 of the first connection portion 46 and the maximum dimension D2 of the second connection portion 48 may be the same.

[0038] In the illustrated example, the plate-like portion 50 has a uniform thickness, and therefore the plate-like portion 50 is generally thinner than the connecting portions 46 and 48.

[0039] In any case, because the plate-shaped portion 50 is thinner than the connecting portions 46 and 48, it is possible to avoid excessive light being supplied to the plate-shaped portion 50 and, consequently, to the longitudinal range 40R1 of the light-emitting portion 40 to which the plate-shaped portion 50 is connected, thereby preventing point illumination where that range is strongly illuminated.

[0040] For example, the maximum dimension of the connecting portions 46 and 48 in the same direction as the thickness direction of the plate-like portion 50 may be 7 mm, and the thickness of the plate-like portion 50 may be 0.45 mm. In this case, the range 40R1 will not become dark, nor will there be any point illumination.

[0041] The light guide 20 is formed by injection molding. The light guide 20 has a gate mark 40e formed by injection molding on the side of the circumferential surface of the light-emitting part 40 opposite the plate-shaped part 50, or in other words, on the side of the circumferential surface of the light-emitting part 40 opposite the connection part with the plate-shaped part 50.

[0042] The side of the circumferential surface of the light-emitting section 40 opposite the plate-shaped section 50 is positioned to avoid the light-emitting surface from which light is emitted and the back surface where the step is formed. Therefore, the adverse effect of the gate mark 40e on the light emission from the light-emitting section 40 can be reduced or eliminated.

[0043] Furthermore, having a gate mark 40e on the side of the circumferential surface of the light-emitting section 40 opposite the plate-shaped section 50 means that during injection molding, the gate faces the cavity of the light-emitting section 40, making it easy for resin to flow into the cavity of the light-emitting section 40, and also because the gate faces the cavity of the plate-shaped section 50, making it easy for resin to flow into the cavity of the plate-shaped section 50 and, consequently, into the entire cavity of the light-supplying section 42. In other words, resin can easily flow from a single gate into the entire cavity of the light guide 20.

[0044] In the longitudinal region 40R2 of the light-emitting section 40, where direct light from the light supply section 42 is incident, the step size may be lower and / or the number of steps per unit length in the longitudinal direction may be smaller (in other words, the step density may be lower) compared to the longitudinal region where direct light is incident (i.e., the region other than region 40R2). This prevents the region 40R2 of the light-emitting section 40 where direct light is incident from appearing as a point light, and allows the light-emitting section 40 to light up uniformly.

[0045] The range 40R2 may include the longitudinal range 40R3 of the light-emitting section 40 to which the first connecting section 46 is connected, the longitudinal range 40R4 of the light-emitting section 40 to which the second connecting section 48 is connected, and the longitudinal range 40R1 to which the plate-shaped section 50 is connected.

[0046] The height and / or density of step 40d may differ between ranges 40R3, 40R4 and range 40R1. For example, step 40d may be lower and / or the density of step 40d may be lower in ranges 40R3, 40R4 compared to range 40R1. Conversely, step 40d may be lower and / or the density of step 40d may be lower in range 40R1 compared to ranges 40R3, 40R4.

[0047] The above describes the configuration of the vehicle lighting device 1. Next, we will explain the operation of the vehicle lighting device 1 when it is illuminated.

[0048] When the light source 30 is lit, light from the light source 30 enters the light incident section 44.

[0049] A portion of the light incident on the light incident part 44 enters the first connection part 46 from the light incident part 44, enters the light-emitting part 40 from the first connection part 46, guides the light through the inside of the light-emitting part 40 toward the first end face 40a, and in the process is reflected by step 40d and emitted from the front side of the circumferential surface 40c of the lamp.

[0050] The remaining portion of the light incident on the light incident part 44 enters the second connection part 48 from the light incident part 44, enters the light-emitting part 40 from the second connection part 48, guides the light through the inside of the light-emitting part 40 toward the second end face 40b, and in the process is reflected by step 40d and emitted from the front side of the circumferential surface 40c of the lamp.

[0051] A portion of the light incident on the light incident section 44 enters the first connection section 46 from the light incident section 44, and enters the plate-shaped section 50 from the first connection section 46. Another portion of the light incident on the light incident section 44 enters the second connection section 48 from the light incident section 44, and enters the plate-shaped section 50 from the second connection section 48. The light incident on the plate-shaped section 50 enters the range 40R1 of the light-emitting section 40 from the plate-shaped section 50, and at least a portion of the light incident on the light-emitting section 40 from the plate-shaped section 50 is reflected by the step 40d of the range 40R1 of the light-emitting section 40 and emitted from the front side of the circumferential surface 40c of the lamp.

[0052] Next, the effects of this embodiment will be explained. According to this embodiment, light from the light source 30 is supplied from the light supply unit 42 to the light-emitting unit 40. More specifically, light is supplied from the first connection unit 46 to the first end face 40a side of the light-emitting unit 40, from the second connection unit 48 to the second end face 40b side of the light-emitting unit 40, and from the plate-shaped unit 50 between them. As a result, light is emitted from the entire longitudinal range of the light-emitting unit 40. In other words, the entire longitudinal range of the light-emitting unit 40 can be made to emit light. In addition, since the plate-shaped unit 50 is thinner than the connection units 46 and 48, it is possible to avoid point illumination where too much light is supplied to the plate-shaped unit 50 and, consequently, to the longitudinal range 40R1 of the light-emitting unit 40 to which the plate-shaped unit 50 is connected, causing the range 40R1 to glow strongly. Therefore, according to this embodiment, the entire longitudinal range of the light-emitting unit 40 can be made to emit light relatively uniformly.

[0053] The present disclosure has been described above based on embodiments. These embodiments are illustrative, and it will be understood by those skilled in the art that various modifications are possible in combinations of their components and processing processes, and that such modifications are also within the scope of the present disclosure. Such modifications will be described below.

[0054] (Variation 1) Figures 9(a) to 9(c) are cross-sectional views of the plate-shaped portion 50 and its surrounding area of ​​the light guide 20 according to a modified example. Figures 9(a) to 9(c) correspond to Figures 8(a) to 9(c), respectively.

[0055] In this modified example, the plate-like portion 50 is thicker from the connection point with the first connection point 46 or the second connection point 48 towards the connection point with the light-emitting portion 40. In this case, during injection molding, the cavity of the plate-like portion 50 is wider in the thickness direction of the plate-like portion 50 closer to the gate, so that resin flows easily into the entire plate-like portion 50 and, consequently, the light-supplying portion 42. Alternatively, the plate-like portion 50 can be considered as being thicker from the connection point with the first connection point 46 or the second connection point 48 towards the gate mark 40e.

[0056] (Modification 2) Unlike the embodiment and the modifications described above, the first connecting portion 46 and the second connecting portion 48 may have a plurality of steps arranged longitudinally on the portion of the circumferential surface that is on the rear side of the luminaire. This allows light to be emitted from the first connecting portion 46 and the second connecting portion 46 toward the front of the luminaire.

[0057] (Variation 3) In the embodiments and the modifications described above, the light incident section 44 is composed of a single rod-shaped light guide, but is not limited thereto. The light incident section 44 may be composed of two rod-shaped light guides whose circumferential surfaces are in contact with or close to each other. The light incident section 44 may be composed of two close-proximity rod-shaped light guides and a plate-shaped light guide connecting the two rod-shaped light guides, which is thinner than the two rod-shaped light guides. The light incident section 44 may be composed of a light guide having a shape in which at least a portion of the two rod-shaped light guides overlap each other. In these configurations, the luminaire unit 16 preferably comprises two light sources 30, each of which faces the respective light incident surface of the two rod-shaped light guides. The two light sources 30 may be mounted on one light source unit 18, or on separate light source units 18.

[0058] Any combination of the embodiments and modifications described above is also useful as an embodiment of the present invention. The new embodiments resulting from these combinations possess the combined effects of the respective embodiments and modifications. Furthermore, it will be understood by those skilled in the art that the functions to be performed by each component described in the claims can be achieved by each component shown in the embodiments and modifications individually or in combination thereof. [Explanation of symbols]

[0059] 1 Vehicle lighting fixture, 20 Light guide, 30 Light source, 40 Light-emitting part, 40c Peripheral surface, 40d Step, 40e Gate mark, 42 ​​Light supply part, 44 Light incident part, 46 First connection part, 48 Second connection part, 50 Plate-shaped part.

Claims

1. A vehicle light fixture comprising a light guide and configured to emit light from a light source to the outside via the light guide, The light guide body is A rod-shaped light-emitting part that emits light from the light source, It includes a light supply unit for supplying light from the light source to the light-emitting unit, The light supplied from the light supply unit to the light-emitting unit is guided through the interior of the light-emitting unit and then emitted from its circumferential surface. The aforementioned light supply unit is A light incident section into which light from the aforementioned light source is incident, A first connecting portion having a rod-like shape, the first connecting portion is connected to the circumferential surface of the light-emitting portion such that the light from the light-incident portion that is incident on the light-emitting portion from the first connecting portion is directed toward one end of the light-emitting portion, A second connecting portion having a rod-like shape, located closer to the other end of the light-emitting portion than the first connecting portion, and connected to the circumferential surface of the light-emitting portion such that light from the light-incident portion that enters the light-emitting portion from the second connecting portion is directed toward the other end of the light-emitting portion; A vehicle light fixture comprising the light-emitting portion, the first connecting portion, and the second connecting portion, respectively, and a plate-like portion that is thinner than the first connecting portion and the second connecting portion, which are connected to the circumferential surfaces of the first connecting portion and the second connecting portion.

2. The light guide is formed by injection molding and has a gate mark on the side opposite the plate-shaped portion of the circumferential surface of the light-emitting part, as described in claim 1.

3. The vehicle lamp according to claim 1 or 2, wherein the plate-like portion is thicker from the connection portion with the first connection portion or the second connection portion toward the connection portion with the light-emitting portion.

4. The circumferential surface of the light-emitting portion has a plurality of steps arranged in the longitudinal direction for emitting light that guides light into the interior of the light-emitting portion from the circumferential surface, The vehicle lamp according to claim 1, wherein, of the circumferential surface of the light-emitting portion, in the longitudinal region of the light-emitting portion into which direct light from the light supply portion is incident, the steps are lower or the number of steps per unit length in the longitudinal region is smaller compared to the longitudinal region into which direct light from the light supply portion is incident.

5. The light incident portion has a rod-like shape, The vehicle lamp according to claim 1, wherein the first connection portion and the second connection portion are branched from the light incident portion.

Images