Vehicle lighting

Abstract

To provide a vehicle lighting device that makes it difficult for protruding parts to be perceived as dark areas. [Solution] The vehicle light fixture has a side unit SU, the side unit SU comprises a first light source 11 and a second light source 12 that emit light, and a first light guide member 30 that receives light from the first light source 11 from one side and guides it toward the other side, and emits the guided light from a first emission surface 35, the first light guide member 30 has a main body portion 37 and a protruding portion 38 that protrudes from a part 30b of the other side end 30a of the main body portion 37 and is provided integrally with the part 30b, and the second light source 12 irradiates light onto the protruding portion 38.

Description

Technical Field

[0001] The present disclosure relates to vehicle lamps.

Background Art

[0002] Conventionally, vehicle lamps including a light source and a light guide member that guides light from the light source and emits the light from a predetermined surface have been known. In such vehicle lamps, light from the light source is introduced into the light guide member from one side of the light guide member and guided toward the other side of the light guide member. Therefore, it is difficult for the light to reach the other side, which is away from the light source, and the other side of the light guide member tends to become dark. Thus, vehicle lamps have been proposed in which the angle of a specific surface of the light guide member is adjusted in a substantially stepped shape to facilitate guiding the light from the light source to the other side of the light guide member (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] Here, in a vehicle lamp including a light guide member, it is assumed that a protruding portion protruding from the other side is provided on the other side of the light guide member due to design or the like. In this case, since the protruding portion is further away from one side of the light guide member, even if the technique described in Patent Document 1 is used, it is difficult for the light to reach the protruding portion, and it is likely to be recognized as a dark portion.

[0005] The present disclosure has been made to solve such conventional problems, and an object thereof is to provide a vehicle lamp capable of making it difficult to recognize the protruding portion as a dark portion.

Means for Solving the Problems

[0006] The vehicle lighting device according to this disclosure comprises a first light source and a second light source that emit light, and a light guide member that receives light from the first light source from one side and guides it toward the other side, and emits the guided light from an emission surface, wherein the light guide member has a main body and a protruding portion that protrudes from a part of the other end of the main body and is provided integrally with the part, and the second light source irradiates light onto the protruding portion. [Effects of the Invention]

[0007] According to this disclosure, it is possible to provide a vehicle lighting device that makes it difficult for protruding parts to be perceived as dark areas. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front view showing a vehicle lighting device related to this disclosure. [Figure 2] This is a perspective view showing the side unit shown in Figure 1. [Figure 3] Figure 1 is an exploded perspective view showing the side unit. [Figure 4] Figures 2 and 3 show detailed configuration diagrams of the first light guide member, where (a) is a cross-sectional view taken along line IV-IV in Figure 3, (b) is a partially enlarged view of (a), and (c) is a partially enlarged view of the configuration shown in Figure 3. [Figure 5] Figure 3 is a diagram showing the details of the second light guide member, where (a) is a cross-sectional view of VV shown in Figure 3, and (b) is a partially enlarged view of (a). [Figure 6] This is a front view showing the second light guide member shown in Figure 3. [Figure 7] This is a cross-sectional view taken along line VII-VII in Figure 3. [Figure 8] This is a conceptual diagram showing the light emission from the side unit. [Modes for carrying out the invention]

[0009] The vehicle lighting equipment according to the embodiments of this disclosure will be described below, but this disclosure is not limited to the embodiments described below and can be modified as appropriate without departing from the spirit of this disclosure. In addition, in the embodiments, some parts of the illustration and explanation of some components are omitted, but it goes without saying that the details of the omitted technologies are appropriately applied to the extent that they do not contradict the content described below.

[0010] Figure 1 is a front view showing a vehicle lighting fixture according to this disclosure. The vehicle lighting fixture 1 shown in Figure 1 is installed, for example, in the front right portion of a vehicle as viewed from the driver's seat, and comprises a headlight unit FU, a side unit SU, a decorative member BE, and an outer lens OL. Although the vehicle lighting fixture 1 appears to be roughly rectangular in the front view shown in Figure 1, in reality it has a curved structure that is curved in the depth direction according to the shape of the front right portion of the vehicle.

[0011] The headlight unit FU emits light toward the front of the vehicle and forms a predetermined light distribution pattern. The side unit SU is, for example, a turn signal lamp, a daytime running lamp, or a clearance lamp. The side unit SU is provided on the side of the headlight unit FU that is on the outside of the vehicle. The decorative member BE is a light-opaque member provided in front of each unit FU and SU. The decorative member BE is called a bezel and has openings in the part corresponding to each unit FU and SU. The outer lens OL is provided in front of the decorative member BE. The outer lens OL is, for example, made of a clear lens.

[0012] Figure 2 is a perspective view showing the side unit SU shown in Figure 1, and Figure 3 is an exploded perspective view showing the side unit SU shown in Figure 1. As shown in Figures 2 and 3, the side unit SU comprises a first light source 11 and a second light source 12, a base member 20, a first light guide member (light guide member) 30, a second light guide member 40, and a lens portion 50.

[0013] The first light source 11 and the second light source 12 emit light in a predetermined direction. The first light source 11 and the second light source 12 are respectively mounted on substrates B1 and B2. Predetermined circuits are formed on the substrates B1 and B2. Also, the substrates B1 and B2 are mounted with power supply connectors (not shown). The first light source 11 and the second light source 12 can emit light by being supplied with power through the power supply connectors.

[0014] The first light source 11 is provided on the first substrate B1. The first substrate B1 is provided on one side of the base member 20. One surface of the first substrate B1 faces the front side. The first substrate B1 has a vertically long structure. The first light source 11 is provided in a plurality arranged in the vertical direction on one surface of the vertically long first substrate B1.

[0015] The second light source 12 is provided on the second substrate B2. The second substrate B2 is provided on the other side of the base member 20. One surface of the second substrate B2 faces upward. For example, one second light source 12 is provided on one surface of the second substrate B2.

[0016] The base member 20 is a member that forms the basis of the side unit SU. One side portion 21 of the base member 20 has a flat plate structure. Also, the other side portion 22 of the base member 20 has a curved structure that curves upward and sideward. The base member 20 has a standing wall 23 at the other side end. The standing wall 23 will be described later.

[0017] The first light guide member 30 is a light transmissive member that guides light. The first light guide member 30 is disposed at a position covering the front side of the first light source 11 and the base member 20. The first light guide member 30 is formed with a light introduction portion (see reference numeral 31 in FIG. 4) for introducing light from the first light source 11.

[0018] FIG. 4 is a configuration diagram showing details of the first light guide member 30 shown in FIGS. 2 and 3. (a) is a cross-sectional view taken along line IV-IV of FIG. 3, (b) is a partial enlarged view of (a), and (c) is an enlarged view of a partial configuration shown in FIG. 3. Note that the configurations indicated by reference numerals 34 and 36 in FIG. 4(a) are shown enlarged for the sake of clarity.

[0019] As shown in FIGS. 4(a) and 4(b), a light introduction part 31 is formed on the back surface of one side of the first light guide member 30. The first light introduction part 31 is in a cup shape, and the bottom surface 31b inside the leg part 31a of the cup faces the first light source 11. Therefore, the light from the first light source 11 enters from the inner surface and the bottom surface 31b of the leg part 31a.

[0020] As shown in FIG. 4(a), the first light guide member 30 has a reflection part 32 on the surface of one side. As shown in FIGS. 4(b) and 4(c), the reflection part 32 has a first reflection surface 32a facing the back surface side and the other side of the first light guide member 30. A part of the light introduced by the first light introduction part 31 is reflected by the first reflection surface 32a and guided to the other side.

[0021] The reflection part 32 has a second reflection surface 32b in a V shape on one side of the first reflection surface 32a. As shown in FIG. 4(c), a part of the light introduced by the first light introduction part 31 is guided in the vertical direction by reflection by the second reflection surface 32b. The first light guide member 30 has a second reflection part 33 in a triangular shape (substantially triangular shape) at one side end. The light reflected vertically by the second reflection surface 32b is guided to the other side by reflection by the second reflection part 33.

[0022] As shown in FIG. 4(a), the first light guide member 30 has a number of prisms 34 on the other back surface. The number of prisms 34 is, for example, in a triangular cross-section. The number of prisms 34 reflects the light guided to the other side and emits it from the first emission surface (emission surface) 35 on the surface side. The first emission surface 35 is a part that becomes the other surface of the first light guide member 30. The first emission surface 35 emits the light reflected by the number of prisms 34. The first emission surface 35 has a number of lenses 36 capable of diffusing the emitted light in the horizontal direction. The number of lenses 36 is constituted by cylindrical lenses in the form of a number of ridges extending in the vertical direction. Note that the number of lenses 36 is not limited to cylindrical lenses as long as it has a function of diffusing the emitted light in the horizontal direction, and may be a fish-eye lens or the like.

[0023] As shown in Figure 3, the first light guide member 30 comprises a main body portion 37 and a protruding portion 38. The main body portion 37 is the main part of the first light guide member 30. The main body portion 37 has a portion on the opposite side of the first light introduction portion 31 that can be recognized as the other end 30a. The protruding portion 38 protrudes from a part 30b of this other end 30a and is formed integrally with the part 30b. The position of the part 30b can be assumed by extending the portion of the other end 30a excluding the part 30b. The protruding portion 38 is the part that protrudes from such assumed part 30b.

[0024] In this embodiment, the protrusion 38 protrudes from the portion of the other end 30a of the main body 37 that includes the lower end. The protrusion 38 is triangular in shape when viewed from the front and tapers vertically as it moves away from the other end 30a of the main body 37. In this embodiment, the protrusion 38 has a number of prisms 34 on its back surface and a number of lenses 36 on its front surface, forming a first emission surface 35, similar to the above.

[0025] Such protrusions 38 are formed to protrude further from the other end 30a of the main body 37. In particular, because the protrusions 38 have a tapered shape, it is difficult for light from the first light source 11 to reach them, and dark areas are easily formed.

[0026] Therefore, the side unit SU according to this embodiment is equipped with a second light source 12 and a second light guide member 40 to illuminate the protruding portion 38. In this embodiment, the second light source 12 irradiates light onto the protruding portion 38 via the second light guide member 40.

[0027] The second light guide member 40 shown in Figures 2 and 3 has a second emission surface 41 that receives and outputs light from the second light source 12. The second emission surface 41 is located on the back side of the protrusion 38 and irradiates the protrusion 38 with light from the second light source 12. Figure 5 is a configuration diagram showing details of the second light guide member 40 shown in Figure 3, where (a) is a cross-sectional view of VV shown in Figure 3, and (b) is a partially enlarged view of (a). As shown in Figure 5(a), the second light guide member 40 has a second light introduction section 42, a light guiding section 43, a reflecting section 44, and an emission section 45.

[0028] The second light introduction section 42 is equipped with a light-receiving section 42a that has an inverted frustoconical shape when viewed in cross-section. The top surface 42b of the light-receiving section 42a is directly facing the second light source 12. Therefore, light from the second light source 12 is introduced from the top surface 42b of the light-receiving section 42a. The second light introduction section 42 is equipped with a first reflective surface 42c on the upper side of the light-receiving section 42a.

[0029] The first reflective surface 42c has a roughly conical shape, as shown in Figure 5. Of the light received from the light receiving section 42a, the light that reaches the other end 42c1 of the first reflective surface 42c is reflected by the first reflective surface 42c in a first direction. The first direction is the direction from the second emission surface 41 toward the protrusion 38 in the cross-sectional view shown in Figure 5. On the other hand, of the light received from the light receiving section 42a, the light that reaches the one end 42c2 of the first reflective surface 42c is reflected by the first reflective surface 42c in the direction opposite to the first direction.

[0030] The second light introduction section 42 is equipped with a second reflective surface 42d at one end. The second reflective surface 42d has a V-shape that is horizontal when viewed in cross-section. Light reflected by the first reflective surface 42c in the direction opposite to the first direction is reflected by the second reflective surface 42d toward the first direction.

[0031] The light guide portion 43 guides the light received from the second light source 12 via the second light introduction portion 42 in a first direction. The reflecting portion 44 has a reflective surface 44a set at a predetermined angle with respect to the first direction. Depending on the angle setting of the reflective surface 44a, the reflecting portion 44 reflects the light guided along the first direction by the light guide portion 43 in a second direction. In this embodiment, the second direction is approximately upward. An output portion 45 is provided approximately above the reflecting portion 44.

[0032] As shown in Figure 5(b), the emission unit 45 has a second emission surface 41 on the other end face. The emission unit 45 has a number of prisms 45a on the one end face. The number of prisms 45a reflect the light reflected in the second direction by the reflecting unit 44 in the first direction. The number of prisms 45a are, for example, triangular in cross-section. The emission unit 45 uses the reflection by the number of prisms 45a to emit the light received from the second light source 12 from the second emission surface 41.

[0033] Figure 6 is a front view showing the second light guide member 40 shown in Figure 3. As shown in Figure 6, the second emission surface 41 of the second light guide member 40 has a shape corresponding to the protrusion 38. More specifically, the second emission surface 41 has a shape that is substantially the same as the protrusion 38 when viewed from the front. The second emission surface 41 may be different in size as long as its shape is substantially the same. "Substantially the same shape" means, for example, that when the lengths of specific corresponding sides with different lengths are matched, the area difference is within 20%, and more preferably, within 10%.

[0034] Furthermore, as shown in Figure 5(b), the second light guide member 40 has numerous fisheye lenses 41a formed on the second emission surface 41. As a result, the second emission surface 41 can diffuse light in all directions (up, down, left, and right). Consequently, as shown in Figure 6, the second light guide member 40 is slightly smaller than the protrusion 38 when viewed from the front, yet is sufficient to illuminate the entire area of ​​the protrusion 38.

[0035] Furthermore, as shown in Figure 6, the projection 38 is located in the first direction of the reflective surface 44a. That is, in the front view shown in Figure 6, the projection 38 and the reflective surface 44a are in a state of overlap. As a result, light that has passed through the reflective surface 44a without being reflected in the second direction by the reflective surface 44a also reaches the projection 38. Thus, the efficiency of light utilization is improved.

[0036] Here, in the projection 38 shown in Figures 2 and 6, the part that protrudes the most from the other end 30a of the main body 37 is the part that tends to be the darkest. Furthermore, the apex 38a of the projection 38, which protrudes the most from the other end 30a, is located downwards. In contrast, the emission part 45 of the second light guide member 40 shown in Figure 5 introduces light from the opposite direction to the second direction (an example of a specific direction) and emits it from the second emission surface 41. For this reason, the second emission surface 41 is bright in the direction opposite to the second direction and tends to become darker towards the second direction. Therefore, the darkened part of the projection 38 corresponds to the relatively bright part of the second emission surface 41 of the second light guide member 40.

[0037] Furthermore, as shown in Figure 2, the vertical wall 23 of the base member 20 covers the other end 30a of the main body 37 from the other side, except for a part 30b 30b. Therefore, light that is guided by the first light guide member 30 and emitted from the other end 30a instead of the first emission surface 35 reaches the vertical wall 23. As a result, the light is reflected by the vertical wall 23 and illuminates the area near the other end 30a of the main body 37.

[0038] Furthermore, the base member 20 and other components may have a vertical wall that further covers the other end 30d (see Figure 3) of the protruding portion 38 from the other side. Also, this vertical wall may not cover the entire other end 30d of the protruding portion 38, but only a part of it. This is because it illuminates the other end 30d of the protruding portion 38, making it difficult for the protruding portion 38 to be perceived as a dark area.

[0039] Refer again to Figures 2 and 3. The lens portion 50 is the outermost component of the side unit SU. The lens portion 50 covers the first emission surface 35 of the first light guide member 30. The lens portion 50 also covers the protruding portion 38. Figure 7 is a cross-sectional view taken along line VII-VII in Figure 3, and Figure 8 is a conceptual diagram showing the emission of light from the side unit SU. Note that in Figure 7, reference numerals 51 and 52 refer to only a portion of the components.

[0040] As shown in Figure 7, it is preferable that the lens portion 50 has a staircase shape on its inner surface 50a, which faces the first light guide member 30, with a zigzag extension in the lateral direction. This makes it easier for the lens portion 50 to emit light in the desired direction, between the stair tread surface 51 and the riser surface 52, as shown in Figure 8. Furthermore, it is preferable that the outer surface 50b of the lens portion 50 also has a staircase shape with a zigzag extension in the lateral direction. This prevents the emission side from having a curved structure, making it even easier for the lens portion 50 to emit light in the desired direction. In particular, it is preferable that the outer surface 50b has a staircase shape with surfaces parallel to the tread surface 51 and the riser surface 52 of the inner surface 50a, respectively.

[0041] Next, the operation of the vehicle lighting device 1 according to this embodiment will be described. First, when the side unit SU is lit, both the first light source 11 and the second light source 12 are lit. Light from the first light source 11 is introduced by the first light introduction section 31 located on one side of the first light guide member 30 and guided to the other side of the first light guide member 30.

[0042] Light guided to the other side of the first light guide member 30 is reflected by a number of prisms 34 provided on the back side of the first light guide member 30 and emitted from the first emission surface 35. Here, the other side of the first light guide member 30 tends to become dark. However, in this embodiment, the side unit SU has a vertical wall 23 formed on the base member 20. Therefore, light that is emitted from the other side end 30a of the first light guide member 30 without being emitted from the first emission surface 35 reaches the vertical wall 23, is reflected by the vertical wall 23, and illuminates the vicinity of the other side end 30a of the main body 37. Thus, the other side of the main body 37 is less likely to become dark.

[0043] Furthermore, light from the second light source 12 is incident on the second light guide member 40 and emitted from the second emission surface 41. Here, the protruding portion 38 is further away from the first light introduction portion 31 than the other end 30a of the main body portion 37, and therefore tends to become darker. In particular, because the protruding portion 38 has a tapered shape as it moves away from the other end 30a, it is difficult for light from the first light source 11 to reach it, and it tends to become even darker. However, since light is irradiated onto the protruding portion 38 from the second emission surface 41 of the second light guide member 40 located on the back of the protruding portion 38, the protruding portion 38 is less likely to become a dark area.

[0044] Furthermore, since at least the inner surface 50a of the lens portion 50 is stepped in the lateral direction, it is easy to emit light in the intended direction, on the stair tread surface 51 side and the riser surface 52 side. As a result, when viewed from two directions, the protruding portion 38 is less likely to be perceived as a dark area. Therefore, the protruding portion 38 is perceived as bright when viewed, for example, from the front and from the side.

[0045] In addition, the first emitting surface 35 of the first light guide member 30 is equipped with a number of lenses 36 that can diffuse the emitted light laterally. As a result, the protruding portion 38 also diffuses light laterally. Therefore, the protruding portion 38 becomes brighter and easier to recognize when viewed from both the front and the side, for example.

[0046] Furthermore, since the second emission surface 41 of the second light guide member 40 has a shape corresponding to the protrusion 38, the light dispersion is reduced, such as the light intensity being higher in only a part of the protrusion 38. In particular, the second emission surface 41 has a large number of fisheye lenses 41a formed on it. As a result, when viewed from the front, the second emission surface 41 can be made smaller than the protrusion 38, contributing to miniaturization.

[0047] In addition, the reflective surface 44a of the second light guide member 40 is arranged such that the protrusion 38 is located in the first direction of the reflective surface 44a. Therefore, even if some light is transmitted without being reflected by the reflective surface 44a, this light is more likely to irradiate the protrusion 38.

[0048] Furthermore, the most protruding apex 38a of the protruding portion 38 is located downwards from the other end 30a. In contrast, the emission portion 45 of the second light guide member 40 introduces and outputs light from below. Therefore, the side unit SU corresponds the portion of the protruding portion 38 that tends to become dark with the relatively bright portion of the second emission surface 41 of the second light guide member 40.

[0049] Based on the above, even if a protruding portion 38 is formed integrally with the other end 30a of the first light guide member 30 from a part 30b of the other end 30a of the side unit SU, the protruding portion 38 can be made less likely to be recognized as a dark area.

[0050] In this manner, the first light guide member 30 of the vehicle lamp 1 according to this embodiment has a protruding portion 38 that extends from a part 30b of the other end 30a of the main body portion 37 and is integrally provided with the part 30b, and the second light source 12 irradiates light onto the protruding portion 38. Therefore, even if the light from the first light source 11 does not sufficiently reach the protruding portion 38, the light from the second light source 12 irradiates the protruding portion 38, making it difficult to perceive it as a dark area. Thus, it is possible to provide a vehicle lamp 1 that makes it difficult to perceive the protruding portion 38 as a dark area.

[0051] Furthermore, the vehicle lamp 1 includes a second light guide member 40 that emits light from a second emission surface 41 corresponding to the shape of the protrusion 38. Therefore, the vehicle lamp 1 can emit light from the second emission surface 41, making it easier to illuminate the protrusion 38 more uniformly. Consequently, the vehicle lamp 1 can contribute to reducing the variation in the amount of light irradiated onto the protrusion 38.

[0052] The second light guide member 40 is equipped with a number of fisheye lenses 41a on its second emission surface 41. Therefore, even if the second emission surface 41 is small relative to the protrusion 38, the second light guide member 40 can irradiate light over the entire area of ​​the protrusion 38, and can contribute to miniaturization by reducing the size of the second emission surface 41.

[0053] Furthermore, the second light guide member 40 is positioned such that the protrusion 38 is located in the first direction of the reflective surface 44a. As a result, some of the light that is transmitted through the reflective surface 44a without being reflected also reaches the protrusion 38. Therefore, the vehicle lamp 1 can improve the efficiency of light utilization.

[0054] Furthermore, the light-emitting section 45 reflects the light introduced from below using numerous prisms 45a and emits it from the second light-emitting surface 41. As a result, the lower part of the light-emitting section 45 tends to be brighter than the upper part. On the other hand, the apex 38a of the protruding section 38, which protrudes the furthest from the other end 30a, is located at the bottom, and the apex 38a is the darkest. Therefore, the apex 38a, which is the darkest part of the protruding section 38, becomes the brighter side of the light-emitting section 45. In this way, the vehicle light fixture 1 can be configured so that the dark areas are less noticeable by compensating for the dark apex 38a with the brighter side of the light-emitting section 45.

[0055] Furthermore, since the inner surface 50a of the lens portion 50 is shaped like a staircase in the lateral direction, it becomes easier to emit light in the desired directions in two directions: towards the stair tread surface 51 and towards the riser surface 52. As a result, for example, if the stair tread surface 51 side of the lens portion 50 is facing forward and the riser surface 52 side of the lens portion 50 is facing sideways, the vehicle light fixture 1 can be configured to easily emit light in the desired direction both forward and to the side.

[0056] Furthermore, since the protruding portion 38 tapers as it moves away from the other end 30a of the main body portion 37, the tapered apex portion 38a is particularly prone to forming dark areas. Therefore, the vehicle lamp 1 illuminates the protruding portion 38, which has the apex portion 38a that is particularly prone to forming dark areas, with light from the second light source 12. Consequently, even if the vehicle lamp 1 has a protruding portion 38 that is more prone to forming dark areas, it is possible to make it difficult for dark areas to form.

[0057] Furthermore, since the first light guide member 30 has a number of lenses 36 on its surface that can diffuse light laterally, it can emit light in a way that spreads laterally. As a result, the vehicle light fixture 1 can be configured in such a way that the protruding part 38 is not easily perceived as a dark area, not only when viewed from the front, but also when viewed from the side.

[0058] Although the present disclosure has been described above based on embodiments, this disclosure is not limited to the above embodiments, and modifications may be made, or the technologies of the above embodiments or publicly known technologies may be combined, without departing from the spirit of this disclosure.

[0059] For example, in the above embodiment, the protrusion 38 is formed on the side unit SU provided on the side of the headlight unit FU. However, the protrusion 38 is not limited to being formed on the side unit SU in particular.

[0060] Furthermore, although there is one second light source 12 in the above embodiment, there may be more than one. Also, the vehicle lamp 1 may not have a second light guide member 40 and may use multiple second light sources 12 to illuminate the protruding portion 38 substantially uniformly. Moreover, the number of first light sources 11 is not limited to those described above.

[0061] Furthermore, the protruding portion 38 is not limited to the shape shown in Figure 2, as long as it protrudes from a portion 30b that is assumed to be an extension of the other end 30a. Therefore, the protruding portion 38 may have other shapes, such as a rectangular shape. Also, the protruding portion 38 is not limited to protruding from a portion including the lower end, but may also protrude from a portion including the upper end or from an intermediate portion between the upper and lower parts. [Explanation of symbols]

[0062] 1: Vehicle lighting fixtures 11: 1st light source 12:Second light source 30: First light guide member (light guide member) 30a: Other end 30b: some 35: First launch surface (launch surface) 36: Lens 37: Main body 38:Protrusion 38a: Vertex 40: Second light guide member 41: Second launch surface 41a: Fisheye lens 43: Light guiding part 44:Reflector 44a: Reflective surface 45: Ejection section 45a: Multiple prisms 50: Lens part 50a: Inner surface

Claims

1. A first light source and a second light source that emit light, The system includes a light guide member that receives light from the first light source from one side and guides it toward the other side, and emits the guided light from an emission surface, The light guide member has a main body and a protruding portion that extends from a part of the other end of the main body and is provided integrally with that part. The equipped second light source irradiates the protruding portion with light. A vehicle lighting device characterized by the following features.

2. The system further includes a second light guide member that receives light from the second light source and irradiates the protrusion with light from a second emission surface having a shape corresponding to the shape of the protrusion. The vehicle lighting device according to feature 1.

3. The second light guide member has a number of fisheye lenses formed on the second emission surface. The vehicle lighting device according to feature 2.

4. The second light guide member comprises a light guide portion that guides light from the second light source along a first direction toward the protruding portion from the second emission surface, a reflective portion having a reflective surface set at a predetermined angle with respect to the first direction and reflecting the light guided by the light guide portion in a second direction due to the angle setting of the reflective surface, and an emission portion having a second emission surface and a plurality of prisms that reflect the light reflected by the reflective portion in the second direction toward the first direction, and causing the light reflected by the plurality of prisms to be emitted from the second emission surface. The reflective surface is arranged such that the protrusion is located in the first direction of the reflective surface. The vehicle lighting device according to feature 2.

5. The second light guide member has an emission section on one side having the second emission surface and on the other side having a number of prisms, The emission unit reflects light introduced from a specific direction using the numerous prisms and emits it from the second emission surface. The portion of the protruding part that protrudes the most from the other end is located on the side of the specific direction rather than on the opposite side of the specific direction. The vehicle lighting device according to feature 2.

6. The light guide member comprises a lens portion that covers the light emission surface, The lens portion has a stepped inner surface that faces the light guide member. The vehicle lighting device according to feature 1.

7. The aforementioned protrusion has a shape that tapers towards the other end as it moves away from it. The vehicle lighting device according to feature 1.

8. The light-guiding member's emission surface has a number of lenses capable of diffusing the emitted light laterally. The vehicle lighting device according to feature 1.

Images