Vehicle signal lamp and lens body

By introducing a second light source and a transparent light inlet port into the vehicle signal light, the folded part and the light guide part are used to emit light from the first and second light emitting surfaces between the total reflective surfaces, solving the problem of light not emitting region, and improving the continuity of the light source and the appearance effect.

JP7675573B2Active Publication Date: 2025-05-13STANLEY ELECTRIC CO LTD
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Patent Information

Application Number
JP2021104093
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-06-23
Publication Date
2025-05-13
Estimated Expiration
2041-06-23

AI Technical Summary

Technical Problem

The total reflective surface of the existing vehicle signal light is located between the first and second light emitting surfaces, resulting in the generation of an area (dark portion) in which light does not emit.

Method used

A vehicle signal light is designed, wherein the second light source is located inside the first light source and through a transparent light inlet port and a folded portion, the light guide portion emitting light from the light guide portion between the first and second light emitting surfaces between the total reflective surfaces.

Benefits of technology

The area (dark part) that does not emit light between the first and second light emitting surfaces is effectively suppressed, and the continuity and appearance effect of the light source are improved.

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Abstract

To provide a vehicular signal lighting fixture, etc. that can restrain a region (dark part) from which light is not emitted, from occurring between a first light emission surface and a second light emission surface.SOLUTION: A vehicular signal lighting fixture 10 comprises a first light source 30A, a second light source 30B, and a lens body 20. The lens body includes a lens main body 21, a light incidence part 22 arranged at an end part of the lens main body and in front of the first light source, and a light guide part 23 extending rearward via a folded part from the light incidence part. The folded part includes a first light emission surface 26a from which a portion of light from the first light source incident from the light incidence part is emitted, and a total reflection surface 26c for totally reflecting another portion of the light. The light guide part includes a second emission surface 23a from which the totally reflected light is emitted. The total reflection surface is arranged between the first light emission surface and the second light emission surface. A portion of light from the second light source incident from the light incidence part is emitted from the total reflection surface.SELECTED DRAWING: Figure 2
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Description

[Technical field]

[0001] The present invention relates to a vehicle signal lamp and a lens body, and more particularly to a vehicle signal lamp and a lens body that can suppress the occurrence of areas (dark areas) where no light is emitted between a first light exit surface and a second light exit surface. [Background technology]

[0002] A vehicle signal lamp including a lens body and a light source is known (see, for example, FIG. 8 of Patent Document 1). The lens body includes a lens body and a light guiding section extending rearward from an end of the lens body via a folded section. The lens body includes a first light output surface from which light from the light source that entered the lens body exits. The folded section includes a total reflection surface that totally reflects a portion of the light from the light source that entered the lens body. The light guiding section includes a second light output surface from which light that is folded back by being totally reflected by the total reflection surface and guided by the light guiding section exits. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-41711 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, since the total reflection surface is disposed between the first light exit surface and the second light exit surface, there is a problem in that an area (dark area) where no light is emitted occurs between the first light exit surface and the second light exit surface.

[0005] The present invention has been made to solve such problems, and aims to provide a vehicle signal lamp and a lens body that can suppress the occurrence of areas (dark areas) where no light is emitted between the first light exit surface and the second light exit surface. [Means for solving the problem]

[0006] A vehicle signal lamp according to the present invention is a vehicle signal lamp including a first light source that emits a first light, a second light source that is arranged inwardly relative to the first light source and emits a second light, and a lens body that is arranged in front of the first light source and the second light source, wherein the lens body includes a lens body, a light entrance portion that is arranged at an end of the lens body and in front of the first light source, and a light guiding portion that extends rearward from the light entrance portion via a folding portion, wherein the folding portion includes a first light exit surface from which a portion of the first light that enters from the light entrance portion exits, and a total reflection surface that totally reflects another portion of the first light that enters from the light entrance portion, and the light guiding portion includes a second light exit surface from which the other portion of the light that is folded back by being totally reflected by the total reflection surface and guided by the light guiding portion exits, and the total reflection surface is arranged between the first light exit surface and the second light exit surface, and the portion of the second light that enters from the light entrance portion exits from the total reflection surface.

[0007] With this configuration, it is possible to prevent the occurrence of a region (dark portion) from which no light is emitted between the first light output surface and the second light output surface.

[0008] This is because the light emitted by the second light source and entering through the light entering portion is emitted from the total reflection surface disposed between the first light exit surface and the second light exit surface.

[0009] In addition, in the above-described vehicle signal lamp, of the second light emitted by the second light source, light in a narrow angle direction with respect to the optical axis of the second light source may be transmitted through the lens body and irradiated forward, and light in a wide angle direction with respect to the optical axis of the second light source may enter through the light entrance portion and exit from the total reflection surface.

[0010] Furthermore, in the above-described vehicle signal lamp, the light entering portion may be configured as a cap-type light entering portion so that the first light emitted by the first light source enters, and at least a portion of the cap-type light entering portion on the second light source side may be cut off so that the second light emitted by the second light source enters in a wide-angle direction with respect to the optical axis of the second light source.

[0011] In addition, in the above-mentioned vehicle signal lamp, the lens body may include an additional light entrance portion arranged inwardly of the light entrance portion and through which light of the second light emitted by the second light source in a wide-angle direction with respect to the optical axis of the second light source enters.

[0012] In the above-described vehicle signal lamp, the lens body may include a transmission portion provided between the light entrance portion and an end portion of the lens main body, through which a portion of the light emitted by the second light source passes.

[0013] In addition, in the above-mentioned vehicle signal lamp, the total reflection surface may include a first total reflection surface and a second total reflection surface arranged in a V-shaped opening toward the rear, the first total reflection surface and the second total reflection surface may be configured to totally reflect, in this order, the other portion of the first light entering from the light entrance portion, thereby turning back the other portion of the first light, and the first light exit surface may be configured between the first total reflection surface and the second total reflection surface.

[0014] A lens body according to the present invention includes a first light source that emits a first light, and a lens body that is arranged inwardly relative to the first light source and in front of a second light source that emits a second light, the lens body including a lens body, a light entrance portion that is arranged at an end of the lens body and in front of the first light source, and a light guiding portion that extends rearward from the light entrance portion via a folding portion, the folding portion including a first light exit surface from which a portion of the first light that enters from the light entrance portion exits, and a total reflection surface that totally reflects another portion of the first light that enters from the light entrance portion, the light guiding portion including a second light exit surface from which the other portion of the light that is folded back by being totally reflected by the total reflection surface and guided by the light guiding portion exits, the total reflection surface being arranged between the first light exit surface and the second light exit surface, and the portion of the second light that enters from the light entrance portion exits from the total reflection surface.

[0015] With this configuration, it is possible to prevent the occurrence of a region (dark portion) from which no light is emitted between the first light output surface and the second light output surface.

[0016] This is because the light emitted by the second light source and entering through the light entering portion is emitted from the total reflection surface disposed between the first light exit surface and the second light exit surface. Effect of the Invention

[0017] The present invention can provide a vehicle signal lamp and a lens body that can suppress the occurrence of a region (dark portion) where no light is emitted between the first light output surface and the second light output surface. [Brief description of the drawings]

[0018] [Figure 1] FIG. 2 is a partially enlarged perspective view of a vehicle signal lamp. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle lamp according to an embodiment of the present invention will now be described with reference to the accompanying drawings. In each drawing, corresponding components are given the same reference numerals, and duplicated explanations will be omitted.

[0020] The vehicle lamp of this embodiment is a vehicle signal lamp that functions as a stop lamp and a tail lamp, and is mounted on the rear end of a vehicle (not shown) such as a motorcycle. Note that the vehicle is not limited to a motorcycle, and may be a four-wheeled vehicle such as an automobile.

[0021] FIG. 1 is a partially enlarged perspective view of a vehicle signal lamp, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

[0022] As shown in Fig. 1 and Fig. 2, the vehicle signal lamp 10 includes a first light source 30A, a second light source 30B, and a lens body 20 disposed in front of the first light source 30A and the second light source 30B. For ease of explanation, XYZ axes are defined below as shown in Fig. 2. The X axis extends in the vehicle front-rear direction. The Y axis extends in the vehicle width direction. The Z axis extends in the vertical direction.

[0023] The lens body 20 is made of a transparent resin such as acrylic or polycarbonate, and includes a lens main body 21 , a light entrance section 22 , a light guide section 23 , an additional light entrance section 24 , and a transmission section 25 .

[0024] The lens body 21 is a plate-like lens portion having a thickness in the X direction.

[0025] The light entrance portion 22 is disposed at an end portion (an outer end portion in the vehicle width direction) of the lens body 21 and in front of the first light source 30A.

[0026] The light entrance section 22 is configured as a cap-type light entrance section so that the first light Ray1 emitted by the first light source 30A enters therein.

[0027] Specifically, the light entrance section 22 is a cap-type light entrance section including a central light entrance surface 22a, a cylindrical peripheral light entrance surface 22b extending from the outer periphery of the central light entrance surface 22a toward the first light source 30A, and a cylindrical peripheral reflecting surface 22c disposed outside the peripheral light entrance surface 22b. However, the light entrance section 22 is not a complete cap type, and the second light Ray2 emitted by the second light source 30B (the optical axis AX of the second light source 30B) is reflected by the peripheral light entrance surface 22b. 30B The second light source 30B is configured as a cap-shaped light entrance portion with a part cut off on the second light source 30B side so that light Ray2a) in a wide angle direction enters from the side.

[0028] The central light entrance surface 22a is aligned with the optical axis AX of the light entrance portion 22. 22 The central light entrance surface 22a is a convex lens surface (a convex lens surface convex toward the first light source 30A) that is rotationally symmetric with respect to the center of the light entrance surface 22a, and has a focal point set near the first light source 30A (the center of the light emitting surface). 22 It converts (collimates) the light into parallel light.

[0029] In addition, the optical axis AX of the light entrance portion 22 22 The optical axis AX of the light entrance portion 22 extends in the X direction. 22 and the optical axis AX of the first light source 30A 30A are consistent.

[0030] The peripheral reflecting surface 22c is aligned with the optical axis AX of the light entrance portion 22. 22 The peripheral reflecting surface 22c is a total reflection surface having a parabolic shape that is rotationally symmetric with respect to the peripheral light entering surface 22b. The peripheral reflecting surface 22c reflects the light from the first light source 30A along the optical axis AX of the light entering portion 22. 22 The surface shape is designed so that the light emitted from the lens is converted (collimated) into parallel light.

[0031] The light guiding portion 23 extends rearward from the light entrance portion 22 via a folded portion 26 .

[0032] The folding portion 26 includes a first light exit surface 26a from which a portion of the first light Ray1 entering from the light entering portion 22, Ray1a, exits, and a pair of total reflection surfaces 26b, 26c (hereinafter also referred to as the first total reflection surface 26b and the second total reflection surface 26c) which totally reflect the other portion of the first light Ray1 entering from the light entering portion 22, Ray1b.

[0033] The pair of total reflection surfaces 26b, 26c are arranged in a V-shape that opens toward the rear (upward in FIG. 2). First light exit surface 26a is arranged in front of light incident portion 22 and between first total reflection surface 26b and second total reflection surface 26c (at a location corresponding to the bottom of the V) so that a part of light Ray1a of light Ray1 incident from light incident portion 22 exits.

[0034] The first total reflection surface 26b is disposed in front of the light entrance portion 22 and between the first light exit surface 26a and the optical axis AX of the light entrance portion 22 so that the other part of the light Ray1 entering from the light entrance portion 22, that is, the light Ray1b, is incident thereon. 22 At this time, first total reflection surface 26b is disposed in an inclined state so that light Ray1b incident on first total reflection surface 26b is totally reflected toward second total reflection surface 26c.

[0035] Second total reflection surface 26c is disposed on the outer side (outer side in the vehicle width direction) of first total reflection surface 26b. In this case, second total reflection surface 26c is disposed in an inclined state such that light Ray1b from first total reflection surface 26b that is incident on second total reflection surface 26c is totally reflected toward light guide section 23.

[0036] Light guiding section 23 includes second light exit surface 23a from which light Ray1b guided by light guiding section 23 after being totally reflected by first total reflection surface 26b and second total reflection surface 26c in this order is turned back and exits.

[0037] Specifically, the light guide 23 is a plate-shaped light guide (light guide plate) and includes a second light output surface 23a (outer surface) disposed on the outer side (outer side in the vehicle width direction) and an inner surface 23b disposed on the opposite inner side (inner side in the vehicle width direction). The inner surface 23b includes optical elements LC (plurality of optical elements). The optical elements LC are optical elements for diffusively reflecting light Ray1b, which is guided through the light guide 23 and enters the inner surface 23b from the second total reflection surface 26c, and outputting the light from the second light output surface 23a, and are, for example, V-grooves (plurality of optical elements) extending in the Z direction.

[0038] Second total reflection surface 26c is disposed between first light exit surface 26a and second light exit surface 23a.

[0039] The additional light incident section 24 is a light receiving section for receiving the second light Ray2 emitted by the second light source 30B along the optical axis AX 30B Additional light entering portion 24 is disposed on the inner side (inner side in the vehicle width direction) of light entering portion 22 so that light Ray2b in a wide angle direction enters additional light entering portion 24. Light Ray2b entering additional light entering portion 24 exits from second total reflection surface 26c.

[0040] The additional light entrance section 24 is, for example, aligned with the optical axis AX 22 The additional light entrance portion 24 is a planar light entrance surface arranged at an angle θ with respect to the additional light entrance portion 24. The angle θ is an angle determined so that the light Ray2b entering from the additional light entrance portion 24 exits from the second total reflection surface 26c. The angle θ can be determined, for example, by using a predetermined simulation software. The additional light entrance portion 24 is not limited to a planar light entrance surface, and may have any shape as long as the light entering from the additional light entrance portion 24 exits from the second total reflection surface 26c.

[0041] The transmission portion 25 is a light source that is incident on the optical axis AX of the second light source 30B. 30B The transmitting portion 25 is a portion through which light Ray 2c in the wide-angle direction passes with respect to the light incident portion 22. The transmitting portion 25 is provided between the light incident portion 22 and an end portion of the lens body 21 (an end portion on the outer side in the vehicle width direction).

[0042] The first light source 30A and the second light source 30B are semiconductor light emitting elements such as LEDs that emit red light. The first light source 30A and the second light source 30B have a light emitting surface (for example, a rectangular light emitting surface with a side length of 1 mm). The first light source 30A and the second light source 30B are mounted on a board 40 attached to a housing (not shown) or the like. The second light source 30B is mounted on the inside of the first light source 30A. For design reasons, the first light source 30A is mounted at a different height from the second light source 30B (see FIG. 1), but may be mounted at the same height as the second light source 30B.

[0043] In the vehicle signal lamp 10 having the above-mentioned configuration, a tail lamp is realized by simultaneously lighting the first light source 30A and the second light source 30B.

[0044] As shown in Fig. 2, the light Ray1 emitted by the first light source 30A follows the following optical path. That is, a part of the light Ray1 entering from the light entering section 22, light Ray1a (mainly light entering from the peripheral light entering surface 22b and totally reflected by the peripheral reflecting surface 22c) exits from the first light exiting surface 26a. The light Ray1a exiting from the first light exiting surface 26a is irradiated forward (downward in Fig. 2).

[0045] Furthermore, the other part of the light Ray1 entering from the light entering portion 22, that is, the light Ray1b, is turned back by being totally reflected in this order by the first total reflection surface 26b and the second total reflection surface 26c, is guided within the light guiding portion 23, is diffusely reflected by the inner side surface 23b (plurality of optical elements LC), and is output from the second light output surface 23a. The light Ray1b output from the second light output surface 23a is irradiated laterally.

[0046] In addition, the light Ray1 emitted by the first light source 30A that does not enter the light entering section 22, i.e., the light (not shown) that passes inside the light entering section 22 (the cut portion of the light entering section 22), passes through the lens body 21 and is irradiated forward (downward in Figure 2).

[0047] On the other hand, the light Ray2 emitted by the second light source 30B follows the following optical path.30B The wide-angle light Ray2a passes through the inside of the light entrance portion 22 (the cut portion of the light entrance portion 22) and enters the light entrance portion 22 (side). The wide-angle light Ray2b emitted by the second light source 30B enters the additional light entrance portion 24.

[0048] The light rays Ray2a and 2b incident from the light incident portion 22 and the additional light incident portion 24 follow various optical paths as shown in Fig. 2, and exit from the second total reflection surface 26c. The light rays Ray2a and 2b exiting from the second total reflection surface 26c are irradiated diagonally forward (diagonally downward left direction in Fig. 2). Specifically, the light Ray2a exiting from the second total reflection surface 26c irradiates the range between the light Ray1a exiting from the first light exit surface 26a and irradiated forward, and the light Ray1b exiting from the second light exit surface 23a and irradiated laterally.

[0049] Further, the light Ray2c emitted in the wide-angle direction by the second light source 30B is transmitted through the transmitting portion 25 and is irradiated diagonally forward (diagonally downward and leftward in FIG. 2).

[0050] In addition, the light Ray2 emitted by the second light source 30B is aligned along the optical axis AX 30B Light Ray2d in a narrower angle direction with respect to the incident light passes through the lens body 21 and is irradiated forward (downward in FIG. 2).

[0051] As described above, a tail lamp is realized by the light Rays 1a, 1b, 2a, 2b, 2c, and 2d emitted from the lens body 20. At that time, the light Rays 2a and 2b incident from the light entrance section 22 (side) and the additional light entrance section 24 are emitted from the second total reflection surface 26c disposed between the first light exit surface 26a and the second light exit surface 23a, so that it is possible to prevent the occurrence of an area where no light is emitted between the first light exit surface 26a and the second light exit surface 23a.

[0052] In the vehicle signal lamp 10 having the above configuration, the first light source 30A and the second light source 30B are simultaneously turned on with higher luminous intensity in response to a brake operation, thereby realizing a stop lamp. In this case, the optical paths of the light emitted by the first light source 30A and the light emitted by the second light source 30B are similar to those in the tail lamp, and therefore a description thereof will be omitted.

[0053] As described above, according to this embodiment, it is possible to prevent the occurrence of a region (dark portion) where no light is emitted between the first light emitting surface 26a and the second light emitting surface 23a. This makes it possible to realize an appearance in which the first light emitting surface 26a and the second light emitting surface 23a are connected and emit light.

[0054] This is because light Ray 2a, 2b emitted by the second light source 30B and entering through the light entrance section 22 (side) and the additional light entrance section 24 exits from the second total reflection surface 26c arranged between the first light exit surface 26a and the second light exit surface 23a.

[0055] In addition, according to this embodiment, it is possible to prevent the occurrence of an area where no light is emitted between the first light emitting surface 26a and the second light emitting surface 23a, improving the appearance (design) when lit. Also, the visibility of the vehicle signal lamp 10 when viewed from the rear of the vehicle is improved. Also, the lens body 20 can be visually recognized as emitting light uniformly.

[0056] Furthermore, according to this embodiment, it is possible to prevent the light irradiated diagonally forward (lower left direction in Figure 2) from becoming weaker compared to the forward direction (lower direction in Figure 2) to which light emitted from the first light emitting surface 26a is irradiated and the side direction (left direction in Figure 2) to which light emitted from the second light emitting surface 23a is irradiated.

[0057] This is because light Ray 2a, 2b exiting from the second total reflection surface 26c irradiates the range between light Ray 1a exiting from the first light exit surface 26a and irradiated forward and light Ray 1b exiting from the second light exit surface 23a and irradiated to the side.

[0058] Next, a modified example will be described.

[0059] In the above embodiment, the vehicle signal lamp of the present invention is applied to a vehicle signal lamp that functions as a stop lamp and a tail lamp, but the present invention is not limited to this. For example, the vehicle signal lamp of the present invention may be applied to a turn lamp, a position lamp, or other various vehicle signal lamps.

[0060] The numerical values ​​shown in the above embodiments are all examples, and it goes without saying that suitable numerical values ​​different from these can be used.

[0061] The above-described embodiments are merely examples in all respects. The present invention should not be construed as being limited by the description of the above-described embodiments. The present invention can be implemented in various other forms without departing from the spirit or main characteristics thereof. [Explanation of symbols]

[0062] 10...vehicle signal lamp, 20...lens body, 21...lens main body, 22...light entrance portion, 22a...central light entrance surface, 22b...peripheral light entrance surface, 22c...peripheral reflection surface, 23...light guide portion, 23a...second light exit surface, 23b...inner surface, 24...additional light entrance portion, 25...transmitting portion, 26...folding portion, 26a...first light exit surface, 26b...first total reflection surface, 26c...second total reflection surface, 30A...first light source, 30B...second light source, 40...substrate, AX 22a , AX 30A ...optical axis, AX 30B …Optical axis, LC…Optical element

Claims

1. A signal lamp for a vehicle comprising: a first light source that emits a first light; a second light source that is disposed on an inner side of the first light source and emits a second light; and a lens body that is disposed in front of the first light source and the second light source, The lens body includes a lens body, a light entrance portion disposed at an end of the lens body and in front of the first light source, and a light guide portion extending rearward from the light entrance portion via a folded portion, the folding portion includes a first light exit surface from which a portion of the first light incident from the light incident portion exits, and a total reflection surface that totally reflects another portion of the first light incident from the light incident portion, the light guiding portion includes a second light output surface from which the other part of the light guided by the light guiding portion is turned back by being totally reflected by the total reflection surface and is output; the total reflection surface is disposed between the first light exit surface and the second light exit surface, A part of the second light incident from the light incident portion is output from the total reflection surface, Of the second light emitted by the second light source, light in a narrow angle direction with respect to the optical axis of the second light source is transmitted through the lens body and irradiated forward, and light in a wide angle direction with respect to the optical axis of the second light source enters from the light entrance portion and exits from the total reflection surface, The light entrance portion is configured as a cap-type light entrance portion so that the first light emitted by the first light source enters, and at least a portion of the cap-type light entrance portion on the second light source side is cut off so that the second light emitted by the second light source enters in a wide-angle direction with respect to the optical axis of the second light source.

2. A signal lamp for a vehicle comprising: a first light source that emits a first light; a second light source that is disposed on an inner side of the first light source and emits a second light; and a lens body that is disposed in front of the first light source and the second light source, The lens body includes a lens body, a light entrance portion disposed at an end of the lens body and in front of the first light source, and a light guide portion extending rearward from the light entrance portion via a folded portion, the folding portion includes a first light exit surface from which a portion of the first light incident from the light incident portion exits, and a total reflection surface that totally reflects another portion of the first light incident from the light incident portion, the light guiding portion includes a second light output surface from which the other part of the light guided by the light guiding portion is turned back by being totally reflected by the total reflection surface and is output; the total reflection surface is disposed between the first light exit surface and the second light exit surface, A part of the second light incident from the light incident portion is output from the total reflection surface, Of the second light emitted by the second light source, light in a narrow angle direction with respect to the optical axis of the second light source is transmitted through the lens body and irradiated forward, and light in a wide angle direction with respect to the optical axis of the second light source enters from the light entrance portion and exits from the total reflection surface, The lens body is arranged on the inside of the light entrance portion, and includes an additional light entrance portion through which light of the second light emitted by the second light source, which is in a wide-angle direction with respect to the optical axis of the second light source, enters the vehicle signal lamp.

3. A signal lamp for a vehicle comprising: a first light source that emits a first light; a second light source that is disposed inwardly of the first light source and emits a second light; and a lens body that is disposed in front of the first light source and the second light source, The lens body includes a lens body, a light entrance portion disposed at an end of the lens body and in front of the first light source, and a light guide portion extending rearward from the light entrance portion via a folded portion, the folding portion includes a first light exit surface from which a portion of the first light incident from the light incident portion exits, and a total reflection surface that totally reflects another portion of the first light incident from the light incident portion, the light guiding portion includes a second light output surface from which the other part of the light guided by the light guiding portion is turned back by being totally reflected by the total reflection surface and output; the total reflection surface is disposed between the first light exit surface and the second light exit surface, A part of the second light incident from the light incident portion is output from the total reflection surface, The lens body is provided between the light entrance portion and an end portion of the lens main body, and includes a transmission portion through which a portion of the light emitted by the second light source passes.

4. A signal lamp for a vehicle comprising: a first light source that emits a first light; a second light source that is disposed inwardly of the first light source and emits a second light; and a lens body that is disposed in front of the first light source and the second light source, The lens body includes a lens body, a light entrance portion disposed at an end of the lens body and in front of the first light source, and a light guide portion extending rearward from the light entrance portion via a folded portion, the folding portion includes a first light exit surface from which a portion of the first light incident from the light incident portion exits, and a total reflection surface that totally reflects another portion of the first light incident from the light incident portion, the light guiding portion includes a second light output surface from which the other part of the light guided by the light guiding portion is turned back by being totally reflected by the total reflection surface and output; the total reflection surface is disposed between the first light exit surface and the second light exit surface, A part of the second light incident from the light incident portion is output from the total reflection surface, The total reflection surface includes a first total reflection surface and a second total reflection surface arranged in a V-shaped opening toward the rear, the first total reflection surface and the second total reflection surface totally reflect, in this order, the other part of the first light incident from the light incident portion, thereby folding back the other part of the first light; The first light output surface is disposed between the first total reflection surface and the second total reflection surface.

5. A vehicle signal lamp as described in claim 3 or 4, wherein, of the second light emitted by the second light source, light in a narrow angle direction with respect to the optical axis of the second light source passes through the lens body and is irradiated forward, and light in a wide angle direction with respect to the optical axis of the second light source enters through the light entrance portion and exits from the total reflection surface.

6. The vehicle signal lamp as described in Claim 5, wherein the light entrance portion is configured as a cap-type light entrance portion so that the first light emitted by the first light source enters, and the cap-type light entrance portion is configured as a light entrance portion having at least a portion on the second light source side cut off so that the second light emitted by the second light source enters in a wide-angle direction with respect to the optical axis of the second light source.

7. A vehicle signal lamp as described in any one of claims 1, 3 to 6, wherein the lens body includes an additional light entrance portion arranged inwardly of the light entrance portion and through which the second light emitted by the second light source enters in a wide-angle direction with respect to the optical axis of the second light source.

Citation Information

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