Vehicle lighting fixtures

Abstract

To provide a vehicle lamp capable of preventing generation of spot lighting in an intersection part in which two light guide bodies intersect each other, to improve its appearance during light emission.SOLUTION: A vehicle lamp comprises a plurality of light emitting units 11A, 11B including a light source and a rod-shaped light guide 4. The plurality of light emitting units 11A, 11B arranges light guides 41, 42 in a front-rear direction of the vehicle lamp on at least one tip side, and has an intersection part 12B where a part of a light emitting part S of the front light guide 42 and a tip side of the rear light guide 41 intersect in a front view. At the intersection part 12B, a reflective cut 14a is not provided on the tip side of the rear light guide 41.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] BACKGROUND ART Conventionally, a combination of a light source such as a light emitting diode (LED) and a rod-shaped light guide (light guide rod) has been known as a vehicle lamp to be mounted on a vehicle (see, for example, Patent Document 1 below).

[0003] In such a vehicle lamp, light emitted from a light source enters the light guide through an entrance portion provided on the base end side of the light guide, and is guided toward the tip side of the light guide while repeatedly reflecting inside the light guide. Furthermore, the light reflected by multiple reflection cutouts provided on the back side of the light guide is emitted from the front side of the light guide to the outside of the light guide. This allows the light-emitting portion provided on the front side of the light guide to emit light in a line pattern.

[0004] Furthermore, Patent Document 1 below discloses a light guide for a vehicle in which two light guides are arranged to intersect at an intersection in the direction of light emission to the outside, and an additional lens portion is provided to cover the space formed at the intersection so that the two light guides are visually perceived as a single continuous light guide. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-197576 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the vehicle light guide described in the above-mentioned Patent Document 1, the light emitted from the two light guides overlaps at the intersection of the two light guides, making this area appear brighter than the surrounding area, resulting in a so-called point light, making it impossible to obtain uniform light emission. This causes problems such as a deterioration in the visibility and appearance of the light-emitting part, making it difficult to achieve a good lighting feeling.

[0007] The present invention has been proposed in view of the above-mentioned conventional circumstances, and aims to provide a vehicle lamp that can improve the appearance when emitting light by preventing the occurrence of spot light at the intersection where two light guides intersect. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides the following means. [1] A light source and a rod-shaped light guide, the light emitted from the light source is incident into the light guide from an incident portion provided on the base end side of the light guide, the light is guided toward the tip side of the light guide, and the light reflected by a plurality of reflection cutouts provided on the back side of the light guide is emitted from the front side of the light guide to the outside of the light guide, and a plurality of light-emitting units are provided to cause a light-emitting portion provided on the front side of the light guide to emit light; The light guide is disposed in a front-rear direction of the vehicle lamp at the tip side of at least one of the plurality of light emitting units, an intersection portion where a part of the light emitting portion of the front light guide intersects with a tip side of the rear light guide in a front view; The vehicle lamp according to claim 1, wherein the reflection cut is not provided on the tip side of the rear light guide at the intersection. [2] The vehicle lamp according to [1], characterized in that the tip surface of the rear light guide is inclined toward the rear side with respect to the axial direction of the rear light guide so as to reflect or transmit light incident on the tip surface in a direction other than the front side. [3] The vehicle lamp according to [1], wherein a curved portion curved toward the rear side of the vehicle lamp is provided at the tip side of the rear light guide. [4] A bracket including a first receiving portion that holds the rear light guide and a second receiving portion that holds the front light guide, The vehicular lamp according to any one of [1] to [3], characterized in that at the intersection, the first receiving portion is arranged on the back side of the tip end of the rear light guide where the reflection cut is not provided, and the second receiving portion is arranged between the front side of the rear light guide and the back side of the front light guide. [5] The vehicular lamp according to any one of [1] to [3], characterized in that, when the intersection is viewed from the front, the tip end side of the rear light guide where the reflection cut is not provided is perpendicular to the front light guide. [Effects of the Invention]

[0009] As described above, according to the present invention, it is possible to provide a vehicle lamp that can improve the appearance when emitting light by preventing the occurrence of spot light at the intersection where two light guides intersect. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a front view showing a configuration of a vehicle lamp according to an embodiment of the present invention; [Figure 2] 2 is a cross-sectional view of the vehicle lamp taken along line AA in FIG. 1, illustrating the optical path of light as seen from the front. [Figure 3] 2 is a diagram for explaining the optical path of light as seen from the side in a cross-sectional view of the vehicle lamp taken along line AA shown in FIG. 1. FIG. [Figure 4] FIG. 3 is a front view showing the configuration of an intersection where a first light guide and a second light guide intersect. [Figure 5] 5 is a cross-sectional view showing the configuration of an intersection of line segment BB shown in FIG. 4. [Figure 6] FIG. 10 is a cross-sectional view showing a modified example of the bracket. [Figure 7] FIG. 10 is a cross-sectional view showing a modified example of the first light guide. [Figure 8] 10 is a front view showing another example of the configuration of the intersection where the first light guide and the second light guide intersect. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings used in the following description, the dimensions of the components may be shown at different scales to make them easier to see, and the dimensional ratios of the components may not necessarily be the same as in reality.

[0012] As one embodiment of the present invention, a vehicle lamp 1 shown in, for example, FIGS. 1 to 5 will be described. Fig. 1 is a front view showing the configuration of a vehicular lamp 1A. Fig. 2 is a diagram for explaining the optical path of light L when viewed from the front in a cross-sectional view of the vehicular lamp 1 taken along line AA shown in Fig. 1. Fig. 3 is a diagram for explaining the optical path of light L when viewed from the side in the cross-sectional view of the vehicular lamp 1 taken along line AA shown in Fig. 1. Fig. 4 is a front view showing the configuration of an intersection where a first light guide and a second light guide intersect. Fig. 5 is a cross-sectional view showing the configuration of the intersection along line BB shown in Fig. 4.

[0013] In addition, in the drawings shown below, an XYZ Cartesian coordinate system is set up, with the X-axis direction representing the front-to-rear direction (length direction) of the vehicle lighting fixture 1, the Y-axis direction representing the left-to-right direction (width direction) of the vehicle lighting fixture 1, and the Z-axis direction representing the up-to-down direction (height direction) of the vehicle lighting fixture 1.

[0014] As shown in FIG. 1, the vehicle lamp 1 of this embodiment is a rear combination lamp mounted on both corners of the rear end of a vehicle (not shown) (in this embodiment, the corner on the right rear end) to which the present invention is applied to a tail lamp TLL that emits red light.

[0015] In the following description, unless otherwise specified, the terms "front," "rear," "left," "right," "upper," and "lower" refer to the respective directions when the vehicle lamp 1 is viewed from the front (rear of the vehicle). Therefore, the respective directions when the vehicle is viewed from the front (front of the vehicle) are the reverse of the front, rear, left, and right directions.

[0016] As shown in Figures 1 to 5, the vehicle lamp 1 of this embodiment has a configuration in which multiple (two in this embodiment) light sources 3A, 3B, a first inner lens 4, a bracket 5, a second inner lens 6, and an extension 7 are arranged inside a lamp body 2.

[0017] The lamp body 2 is composed of a housing 8 with an opening on the front side, and a transparent outer lens (cover lens) 9 that covers the opening of the housing 8. In the vehicle lamp 1 of this embodiment, the light-emitting portion S of the tail lamp TLL is exemplified as a case in which the front side of the lamp body 2 emits red light in a substantially rectangular frame shape (square shape). Note that the shapes of the lamp body 2 and the light-emitting portion S can be changed as appropriate to suit the design of the vehicle, etc.

[0018] 4, the light sources 3A and 3B are formed of LEDs that emit, for example, red light (hereinafter simply referred to as "light") L1 and L2, and are mounted on the surfaces of circuit boards 10A and 10B on which drive circuits for driving the LEDs are provided, and the light sources 3A and 3B radially emit the light L1 and L2 toward the rear of the vehicle. The circuit boards 10A and 10B are disposed between the housing 8 and the bracket 5.

[0019] 2 to 5, the first inner lens 4 includes a plurality of (two in this embodiment) light guides 41, 42 corresponding to the plurality of light sources 3A, 3B, respectively, for guiding the light L1, L2 emitted from the light sources 3A, 3B, and these plurality of light guides 41, 42 are combined to form a single light guide lens corresponding to the shape of the above-mentioned light-emitting section S. The light guides 41, 42 are made of a light-transmitting material such as a transparent resin such as polycarbonate or acrylic, or glass.

[0020] In this embodiment, of the multiple light sources 3A, 3B and multiple light guides 41, 42, the first light source 3A and the first light guide 41 constitute a first light-emitting unit 11A, and the second light source 3B and the second light guide 42 constitute a second light-emitting unit 11B.

[0021] The first inner lens 4 has intersection portions 12A, 12B where the tip side of the rear light guide (in this embodiment, the first light guide 41) constituting one of the multiple light-emitting units 11A, 11B (in this embodiment, the first light-emitting unit 11A) intersects with the front light guide (in this embodiment, the second light guide 42) constituting the other light-emitting unit (in this embodiment, the second light-emitting unit 11B) when viewed from the front.

[0022] That is, this first inner lens 4 is formed into an approximately rectangular frame shape (L-shaped) when viewed from the front by arranging a rod-shaped first light guide 41 and a rod-shaped second light guide 42 in a state where they are overlapped in the front-to-back direction at the intersections 12A and 12B.

[0023] Specifically, when viewed from the front, the first light guide 41 has a first light guide portion 41a extending forward from the base end side facing the first light source 3A at the lower right, a second light guide portion 41c extending leftward from the tip of the first light guide portion 41a via a branch portion 41b, and a third light guide portion 41d extending upward via the branch portion 41b, curving leftward, and then extending leftward.

[0024] When viewed from the front, the second light guide 42 has a fourth light guide portion 42a extending forward from the base end side facing the second light source 3B at the lower left, and a fifth light guide portion 42b extending upward from the tip of the fourth light guide portion 42a.

[0025] When viewed from the front, the first inner lens 4 has a first intersection 12A where the tip of the second light-guiding section 41c and the middle part of the fifth light-guiding section 42b intersect (orthogonal in this embodiment), and a second intersection 12B where the tip of the third light-guiding section 41d and the tip of the fifth light-guiding section 42b intersect (orthogonal in this embodiment).

[0026] In this embodiment, the first intersection 12A and the second intersection 12B have basically the same configuration, and therefore the configuration will be described while illustrating the second intersection 12B side.

[0027] The first light-emitting unit 11A allows light L1 emitted from the first light source 3A to enter the inside of the first light guide 41 from an incident portion 13a provided on the base end side of the first light guide 41 (first light guide section 41a), and guides the light L1 toward the tip side of the first light guide 41 (second light guide section 41c and third light guide section 41d), and also emits light L1 reflected by multiple reflection cuts 14a provided on the back side of the first light guide 41 (second light guide section 41c and third light guide section 41d) to the outside of the first light guide 41 from an exit portion 15a provided on the front side of the first light guide 41 (second light guide section 41c and third light guide section 41d).

[0028] The second light-emitting unit 11B allows light L2 emitted from the second light source 3B to enter the interior of the second light guide 42 from an incident portion 13b provided on the base end side of the second light guide 42 (fourth light guide portion 42a), and guides the light L2 toward the tip side of the second light guide 42 (fifth light guide portion 42b), and also emits light L2 reflected by multiple reflection cuts 14b provided on the back side of the second light guide 42 (fifth light guide portion 42b) to the outside of the second light guide 42 from an exit portion 15b provided on the front side of the second light guide 42 (fifth light guide portion 42b).

[0029] This allows the light-emitting portion S to be created on the front side of the first light guide 41 and the second light guide 42 by emitting light from the exit portion 15a of the first light guide 41 (first light guide portion 41a) and the exit portion 15b of the second light guide 42 (fifth light guide portion 42b).

[0030] The incident portions 13a and 13b are located on the base end side of the light guides 41 and 42 and have flat (planar) incident surfaces facing the light sources 3A and 3B. The incident portions 13a and 13b allow the light L1 and L2 emitted from the light sources 3A and 3B to enter the light guides 41 and 42 from the incident surfaces. Note that the incident portions 13A and 13b are not limited to the configuration having the flat (planar) incident surfaces described above, and may have a lens shape that collimates or condenses the light L1 and L2 radially emitted from the light sources 3A and 3B and enters the light guides 41 and 42.

[0031] The multiple reflection cuts 14a, 14b are not particularly limited in shape, size, number, etc., as long as they reflect light L1, L2 incident on the back side of the light guides 41, 42 (the second light guide section 41c, the third light guide section 41d, and the fifth light guide section 42b) at an angle such that the light L1, L2 is emitted (transmitted) from the front side of the light guides 41, 42 to the outside.

[0032] In this embodiment, for example, the light guides 41, 42 (the second light guide section 41c, the third light guide section 41d, and the fifth light guide section 42b) are configured by cutting out the central portion of the back side of the light guides 41, 42 in a direction perpendicular to the axial direction of the light guides 41, 42, and the grooves having an approximately triangular cross section are aligned in the axial direction of the light guides 41, 42 (the second light guide section 41c, the third light guide section 41d, and the fifth light guide section 42b).

[0033] Furthermore, in order to uniformize the light L1, L2 emitted from the emission sections 15a, 15b (described later) in the direction in which the light guides 41, 42 (the second light guide 41c, the third light guide 41d, and the fifth light guide 42b) extend, the grooves forming the reflection cut sections 14a, 14b are gradually deeper from one end (the entrance sections 13a, 13b side) of the light guides 41, 42 (the second light guide 41c, the third light guide 41d, and the fifth light guide 42b) toward the other end. Alternatively, the intervals between adjacent reflection cut sections 14a, 14b may be gradually narrower from one end to the other end of the light guides 41, 42 (the second light guide 41c, the third light guide 41d, and the fifth light guide 42b).

[0034] In addition, a pair of reflective surfaces 14c are provided on both sides of the central portion (multiple reflective cuts 14a, 14b) on the back side of the light guides 41, 42 (second light guide section 41c, third light guide section 41d and fifth light guide section 42b).

[0035] The pair of reflecting surfaces 14c are configured as concave curved surfaces curved in an arc shape in a vertical cross section (hereinafter referred to as a "vertical cross section") perpendicular to the axial direction of the light guides 41, 42 (the second light guide portion 41c, the third light guide portion 41d, and the fifth light guide portion 42b). Note that the pair of reflecting surfaces 14c are not necessarily required and may be omitted in some cases. In this case, for example, the light guides 41, 42 may have a substantially circular or rectangular shape in a cross section perpendicular to the axial direction.

[0036] The emission sections 15a and 15b are located on the front side of the light guides 41 and 42 (the second light guide 41c, the third light guide 41d, and the fifth light guide 42b) and have emission surfaces that are continuous in the axial direction of the light guides 41 and 42 (the second light guide 41c, the third light guide 41d, and the fifth light guide 42b). The emission surfaces are formed by convex curved surfaces that are curved in an arc shape in a vertical cross section of the light guides 41 and 42 (the second light guide 41c, the third light guide 41d, and the fifth light guide 42b).

[0037] Incidentally, the light output portions 15a and 15b may be configured to have a plurality of diffusion cuts (not shown) for diffusing the light L1 and L2 emitted from the emission surfaces toward the outside. Examples of the diffusion cuts include lens cuts called flute cuts and fisheye cuts, and uneven structures formed by knurling or embossing. In addition, by adjusting the shape of the diffusion cuts, it is possible to control the degree of diffusion of the light L1 and L2 emitted from the emission surfaces.

[0038] In the first light guide 41 (second light guide portion 41c and third light guide portion 41d), non-light emitting portions D, which do not emit light due to the absence of reflection cutoff portions 14a, are provided from intersections 12A and 12B to the tip. That is, reflection cutoff portions 14a are provided in an area that does not overlap with second light guide 42 (fifth light guide portion 42b) in a front view.

[0039] In addition, the tip surface 41e of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) is inclined toward the back side with respect to the axial direction of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) so as to reflect or transmit the light L1 incident on the tip surface 41e in a direction other than the front side.

[0040] Bracket 5 is made of a colored (e.g., black) light-shielding member and is disposed between housing 8 and first inner lens 4. Bracket 5 has a first receiving portion 5a that holds first light guide 41 (second light guide portion 41c and third light guide portion 41d) from the rear surface side, and a second receiving portion 5b that holds second light guide 42 (fifth light guide portion 42b) from the rear surface side.

[0041] The first receiving portion 5a is arranged on the back side of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) excluding the non-light emitting portion D at the intersections 12A and 12B.

[0042] The second receiving portion 5b is disposed at the intersections 12A and 12B between the front side of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) and the back side of the second light guide 42 (the fifth light guide portion 42b). That is, the second receiving portion 5b is provided in a range overlapping with the non-light-emitting portion D in a front view.

[0043] As shown in Figures 2, 3 and 5, the second inner lens 6 is made of a light-transmitting material such as a transparent resin such as polycarbonate or acrylic, or glass, and is formed into an approximately rectangular frame shape (a square shape) when viewed from the front.

[0044] The second inner lens 6 is disposed opposite to the front side of the first inner lens 4, and serves as a diffusion lens that diffuses the light L1, L2 emitted forward from the first inner lens 4.

[0045] In addition, the second inner lens 6 has diffusion surfaces 6a, 6b on at least one or both sides (both sides in this embodiment) of its back side and front side, which diffuse and transmit light L1, L2 emitted from the first inner lens 4.

[0046] The diffusion surfaces 6a and 6b have an uneven structure for diffusing the light L1 and L2. Examples of such an uneven structure include a lens cut called a flute cut or a fisheye cut, and an uneven structure formed by applying a knurling process or a texturing process. In this embodiment, the diffusion surfaces 6a and 6b are textured to diffuse the light L1 and L2 in the left-right and up-down directions.

[0047] In addition, in the second inner lens 6, it is possible to control the light distribution and degree of diffusion of the light L1, L2 emitted from the second inner lens 6 by adjusting the shape of the diffusion surfaces 6a, 6b, etc.

[0048] The extension 7 has a colored (e.g., black) first light-shielding member 71 that covers the outside of the second inner lens 6, and a colored (e.g., black) second light-shielding member 72 that covers the inside of the second inner lens 6, and blocks light L1, L2 emitted from other than the front side of the second inner lens 6.

[0049] In the vehicle lamp 1 of this embodiment having the above-described configuration, the light emitting portion S of the tail lamp TLL can emit red light in an approximately rectangular frame shape (L-shaped) on the front side of the lamp body 2 using light L1, L2 emitted from the front side of the second inner lens 6.

[0050] In the vehicle lamp 1 of this embodiment, the tip side of the above-mentioned first light guide 41 (second light guide portion 41c and third light guide portion 41d) and the second light guide 42 (fifth light guide portion 42b) intersect at intersection portions 12A and 12B when viewed from the front, and a non-light-emitting portion D is provided from the intersection portions 12A and 12B to the tip of the first light guide 41 (second light guide portion 41c and third light guide portion 41d).

[0051] As a result, in the vehicle lamp 1 of this embodiment, as shown in Figures 2 and 5, light L1 reflected by the reflection cut 14a is emitted from the front-side exit section 15a within an area that does not overlap with the second light guide 42 (fifth light guide section 42b) when viewed from the front, and this light L1 does not enter the second light guide 42 (fifth light guide section 42b).

[0052] In addition, in the vehicle lamp 1 of this embodiment, at the above-mentioned intersections 12A, 12B, the first receiving portion 5a is arranged on the back side of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) excluding the non-light-emitting portion D, and the second receiving portion 5b is arranged between the front side of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) and the back side of the second light guide 42 (the fifth light guide portion 42b).

[0053] As a result, in the vehicle lamp 1 of this embodiment, as shown in Figure 5, light L1 leaking from the tip side of the first light guide 41 (second light guide section 41c and third light guide section 41d) can be blocked by the second receiving section 5b provided in the area overlapping with the non-light-emitting section D, thereby preventing the light L1 from entering the second light guide 42 (fifth light guide section 42b).

[0054] Therefore, in the vehicle lamp 1 of this embodiment, at the intersections 12A, 12B, the light L1 emitted from the exit portion 15a of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) and the light L2 emitted from the exit portion 15b of the second light guide 42 (the fifth light guide portion 42b) do not overlap, so it is possible to prevent the occurrence of spot lights in terms of appearance when viewed from the front.

[0055] Furthermore, in the vehicle lamp 1 of this embodiment, it is possible to obtain uniform light emission between the exit portion 15a of the first light guide 41 (the second light guide portion 41c and the third light guide portion 41d) and the exit portion 15b of the second light guide 42 (the fifth light guide portion 42b).

[0056] In addition, in the vehicle lamp 1 of this embodiment, the tip surface 41e of the above-mentioned first light guide 41 (second light guide portion 41c and third light guide portion 41d) is inclined toward the back side with respect to the axial direction of the first light guide 41 (second light guide portion 41c and third light guide portion 41d).

[0057] As a result, in the vehicle lamp 1 of this embodiment, as shown in Figures 3 and 5, the light L1 incident on the tip surface 41e is reflected or transmitted in a direction other than the front side, so that it is possible to prevent a portion of the light L1 guided inside the first light guide 41 (the second light guide section 41c and the third light guide section 41d) from becoming stray light L1' and leaking out to the outside from the exit section 15a of the light guide 41 (the second light guide section 41c and the third light guide section 41d).

[0058] On the other hand, as shown by the virtual line T in Figure 5, when the tip surface 41e' of the first light guide 41 (the second light guide section 41c and the third light guide section 41d) is perpendicular to the axial direction of the first light guide 41 (the second light guide section 41c and the third light guide section 41d), part of the light L1 reflected by this tip surface 41e' becomes stray light L1' and leaks out from the exit section 15a of the light guide 41 (the second light guide section 41c and the third light guide section 41d).

[0059] In this case, when the intersections 12A and 12B are viewed from the side, they are visually recognized as point lights due to the light L1' leaking to the outside, and the appearance of the emitted light when viewed from the side is poor.

[0060] As described above, the vehicle lamp 1 of this embodiment can prevent the occurrence of spot light at the intersections 12A, 12B where the two light guides 41, 42 intersect, while achieving uniform light emission, thereby improving the appearance when lit.

[0061] The present invention is not necessarily limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the bracket 5 may have the configuration shown in FIGS. 6(A) and 6(B) in addition to the configuration described above.

[0062] Of these, the bracket 5 may be configured such that a portion of the second receiving portion 5b that faces the back side of the second light guide 42 (fourth light guide portion 42a) is omitted at the intersections 12A and 12B, as shown in Figure 6(A).

[0063] On the other hand, the bracket 5 may be configured to have a wall portion 5c facing the first light guide 41 (second light guide portion 41c and third light guide portion 41d) at the intersections 12A and 12B, as shown in Figure 6(A).

[0064] In addition, the first light guide 41 may have a configuration in which, in addition to the configuration having the tip surface 41e described above, a curved portion 41f curved toward the back side is provided at the tip side of the first light guide 41 (second light guide portion 41c and third light guide portion 41d), as shown in Figure 7, for example.

[0065] Even in this configuration, it is possible to prevent a portion of the light L1 guided inside the first light guide 41 (the second light guide section 41c and the third light guide section 41d) from becoming stray light L1' and leaking out from the exit section 15a of the light guide 41 (the second light guide section 41c and the third light guide section 41d) to the outside.

[0066] In addition to the above-mentioned configuration, the first inner lens 4 can also be configured to form a light-guiding lens corresponding to the shape of the light-emitting section S by combining a first light guide 43 and a second light guide 44, such as the first inner lens 4A shown in Figure 8.

[0067] Specifically, when viewed from the front, the first light guide 43 has a first light guide portion 43a extending forward from the base end side facing the first light source 3A at the lower right, a second light guide portion 43c extending leftward from the tip of the first light guide portion 43a via a branch portion 43b, and a third light guide portion 43d extending upward via the branch portion 43b.

[0068] When viewed from the front, the second light guide 44 has a fourth light guide section 44a extending forward from the base end side facing the second light source 3B on the upper left, a fifth light guide section 44c extending from the tip of the fourth light guide section 44a toward the right via a branch section 44b, and a sixth light guide section 44d extending downward via the branch section 44b.

[0069] When viewed from the front, the first inner lens 4A has a first intersection 12C where the tip of the second light-guiding section 43c and the tip of the sixth light-guiding section 44d intersect (orthogonal in this embodiment), and a second intersection 12D where the tip of the third light-guiding section 43d and the tip of the fifth light-guiding section 44c intersect (orthogonal in this embodiment).

[0070] This allows the first inner lens 4A to be formed into a substantially rectangular frame shape (a square shape) when viewed from the front. Also, the first inner lens 4A can have four right-angled corners without curved portions such as the third light guide section 41d described above.

[0071] In the above embodiment, the first light guide 41 and the second light guide 42 are configured as separate bodies, each having a light source 3A, 3B. However, the base end side of the first light guide 41 and the base end side of the second light guide 42 may be integrated, i.e., one light guide may be configured to branch into two bodies, the first light guide 41 and the second light guide 42, to form two light-emitting units and provide one light source.

[0072] Furthermore, in the above embodiment, the vehicle lamp 1 is applied to a tail lamp as an example, but the vehicle lamp to which the present invention is applied is not limited to rear vehicle lamps such as the tail lamp described above, and the present invention can also be applied to front vehicle lamps.

[0073] That is, the present invention can be widely applied to vehicle lighting fixtures other than the above-mentioned tail lamps, such as brake lamps, backup lamps, daytime running lamps (DRLs), sidelights (position lamps), turn signals (turn lamps), etc. Furthermore, the color of the light emitted by the light source is not limited to the above-mentioned red light, but can be changed as appropriate depending on the application of the vehicle lighting fixture, such as white light or orange light. [Explanation of symbols]

[0074] DESCRIPTION OF SYMBOLS 1...vehicle lamp 2...lamp body 3A...first light source 3B...second light source 4, 4A...first inner lens 5...bracket 5a...first receiving portion 5b...second receiving portion 5c...wall portion 6...second inner lens 7...extension 8...housing 9...outer lens (cover lens) 10A, 10B...circuit board 11A...first light-emitting unit 11B...second light-emitting unit 12A...first intersection portion 12B...second intersection portion 12C...first intersection portion 12D...second intersection portion 13a, 13b...incident portion 14a, 14b...reflection cut 15a, 15b...exit portion 41...first light guide body 41e...tip surface 41f...curved portion 42...second light guide body 71...first light-blocking member 72... Second light-shielding member S... Light-emitting portion D... Non-light-emitting portion L1, L2... Light

Claims

1. The light guide includes a light source and a rod-shaped light guide, and includes a plurality of light-emitting units that cause light emitted from the light source to enter the inside of the light guide from an incident portion provided on the base end side of the light guide and guide the light toward the tip side of the light guide, and that emit light reflected by a plurality of reflection cutouts provided on the back side of the light guide from the front side of the light guide to the outside of the light guide, thereby causing a light-emitting portion provided on the front side of the light guide to emit light, The light guide is disposed in a front-rear direction of the vehicle lamp at the tip side of at least one of the plurality of light emitting units, an intersection portion where a part of the light emitting portion of the front light guide intersects with a tip side of the rear light guide in a front view; The vehicle lamp according to claim 1, wherein the reflection cut is not provided on the tip side of the rear light guide at the intersection.

2. 2. The vehicle lamp according to claim 1, wherein the tip surface of the rear light guide is inclined toward the rear side with respect to the axial direction of the rear light guide so as to reflect or transmit light incident on the tip surface in a direction other than the front side.

3. 2. The vehicle lamp according to claim 1, wherein a curved portion curved toward a rear side of the vehicle lamp is provided at a tip end of the rear light guide.

4. a bracket including a first receiving portion that holds the rear light guide and a second receiving portion that holds the front light guide; 4. The vehicle lamp according to claim 1, wherein at the intersection, the first receiving portion is arranged on the back side of the tip end of the rear light guide where the reflection cut is not provided, and the second receiving portion is arranged between the front side of the rear light guide and the back side of the front light guide.

5. 4. The vehicle lamp according to claim 1, wherein, when the intersection is viewed from the front, the tip side of the rear light guide where the reflection cut is not provided is perpendicular to the front light guide.

Images