Vehicle lighting fixtures

Abstract

To improve appearance in a light emitting state.SOLUTION: A vehicular lighting fixture includes: a light source; a light guide extending in a right and left direction in a vehicle loading state and guiding the light from the light source to emit the light from a side face; an inner lens disposed along the side face of the light guide and guiding and emitting the light emitted from the light guide; and an outer lens transmitting the light emitted from the inner lens. The outer lens has a plate-like shape, of which an upper face portion and a lower face portion are extended so that a front face portion is projected to a front side in a vehicle loading state. The inner lens has a plate-like shape and has a first part disposed along the front face portion of the outer lens to emit the light toward the front face portion, and a second part disposed along the upper face portion of the outer lens from an upper end of the first part toward a back side and emitting the light toward the upper face portion. The light guide is disposed to emit the light toward the first part and the second part of the inner lens, and the lower face portion of the outer lens.SELECTED DRAWING: Figure 4

Description

[Technical Field]

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

[0002] BACKGROUND ART A vehicle lamp having an outer lens that protrudes rearward of the vehicle is known (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-041397 Summary of the Invention [Problem to be solved by the invention]

[0004] In a vehicle lamp such as that described in Patent Document 1, in order to improve the appearance of the luminous state of the outer lens, a configuration has been proposed in which, for example, a reflector is placed along the lower portion of the outer lens, and the reflector reflects light from the light source toward the front and upper portions of the outer lens. However, with this configuration, the lower portion of the outer lens where the reflector is placed does not emit light, so improvement is required in terms of the appearance when luminous.

[0005] The present invention has been made in view of the above, and has an object to provide a vehicle lamp that can improve the appearance in a light-emitting state. [Means for solving the problem]

[0006] The vehicle lamp of the present invention comprises a light source, a light guide that extends in the left-right direction when mounted on a vehicle and guides light from the light source and emits it from a side, an inner lens that is arranged along the side of the light guide and guides the light emitted from the light guide and emits it, and an outer lens that transmits the light emitted from the inner lens, wherein the outer lens is plate-shaped and has an upper surface and a lower surface that extend so that the front surface when mounted on a vehicle protrudes toward the front side, and the inner lens is plate-shaped and has a first portion that is arranged along the front surface of the outer lens and emits light toward the front surface, and a second portion that is arranged along the upper surface of the outer lens from the upper end of the first portion toward the back side and emits the light toward the upper surface, and the light guide is arranged to emit light toward the first and second portions of the inner lens and the lower surface of the outer lens.

[0007] In the above-mentioned vehicular lamp, the light guide may have a first light guiding section that emits the light to at least the first portion, and the first portion may be configured to emit the light from the first light guiding section toward the front portion.

[0008] In the above-mentioned vehicular lamp, the first light-guiding portion may be formed to emit the light toward a lower surface of the second portion, and the second portion may have a prism portion that refracts the light from the first light-guiding portion toward the upper surface portion.

[0009] In the above vehicle lamp, the first light guiding portion may be provided to emit the light toward the lower surface portion.

[0010] In the above-mentioned vehicle lamp, the light guide may have a second light guiding portion that emits the light toward an end face on the back side of the second portion, and the second portion may be configured to guide the light from the second light guiding portion to the front side along the extension direction of the second portion so as not to cause internal reflection of the light, and emit the light toward the front portion.

[0011] In the above-described vehicle lamp, the light guide may include a third light guide portion that emits the light toward a lower surface of the second portion, separate from the first light guide portion and the second light guide portion. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a vehicle lamp that can improve the appearance in a light-emitting state. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram showing an example of the rear part of a vehicle according to this embodiment. [Figure 2] FIG. 2 is an exploded perspective view showing an example of a vehicle lamp. [Figure 3] FIG. 3 is a diagram showing the configuration along the cross section AA in FIG. [Figure 4] FIG. 4 is a diagram showing the configuration along the cross section BB in FIG. [Figure 5] FIG. 5 is a cross-sectional view showing a vehicle lamp according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of a vehicle lamp according to the present invention will be described with reference to the drawings. However, the present invention is not limited to this embodiment. Furthermore, the components in the following embodiments include those that are easily replaceable by those skilled in the art, or those that are substantially the same.

[0015] In this embodiment, the front and rear directions are directions in a state where the device is mounted on a vehicle (mounted on a vehicle). For example, when the device is mounted on the front of the vehicle, the front is the front direction (front side) and the rear is the rear direction (rear side). When the device is mounted on the rear of the vehicle, the rear is the front direction (front side) and the front is the rear direction (rear side). When the device is mounted on the side of the vehicle, the outside of the vehicle is the front direction (front side) and the inside of the vehicle is the rear direction (rear side).

[0016] FIG. 1 is a diagram showing an example of the rear of a vehicle 1 according to this embodiment. As shown in FIG. 1, the vehicle 1 includes a vehicle body 2, a running device 3, and a vehicle lamp 100. The vehicle body 2 has a driver's cab where a driver sits. The vehicle body 2 is supported by the running device 3. The running device 3 has wheels on which tires 4 are mounted, a steering device for changing the direction of travel of the vehicle 1, and a brake device for slowing down or stopping the running device 3. The vehicle 1 includes a boarding / alighting door provided on the side of the vehicle body 2, and a tailgate 7 provided on the rear of the vehicle body 2. The boarding / alighting door and the tailgate 7 are each movably supported on the vehicle body 2 via a hinge mechanism.

[0017] In this embodiment, the vehicular lamp 100 is provided on each of the left and right sides of the rear of the vehicle body 2. In this embodiment, the vehicular lamp 100 is provided at the rear of the vehicle body 2. Therefore, the rear side in the front-to-rear direction will be referred to as the front side of the vehicular lamp 100, and the front side in the front-to-rear direction will be referred to as the back side of the vehicular lamp 100.

[0018] The vehicle lighting device 100 includes functional lamps, such as tail lamps that are provided at the rear of the vehicle body 2 and light up in conjunction with the lighting of the head lamps, stop lamps that are provided at the rear of the vehicle body 2 and light up in conjunction with the operation of the brake device, and rear turn signal lamps that are provided at the rear of the vehicle body 2 and light up to indicate the direction in which the vehicle 1 is traveling to those around it.

[0019] The vehicle lamps 100 are disposed, for example, on the vehicle body 2 side. In this embodiment, the vehicle body 2 is a fixed part. The back door 7 is a movable part. The structure of the vehicle lamp 100 provided on the left rear part of the vehicle body 2 and the structure of the vehicle lamp 100 provided on the right rear part of the vehicle body 2 are symmetrical in the left-right direction and are substantially identical in structure. The following mainly describes the vehicle lamp 100 provided on the left rear part of the vehicle body 2, and the description of the vehicle lamp 100 provided on the right rear part of the vehicle body 2 will be simplified or omitted.

[0020] Fig. 2 is an exploded perspective view showing an example of a vehicle lamp 100. Fig. 3 is a diagram showing the configuration along the AA cross section in Fig. 1. Fig. 3 shows a state in which the light guide 20 and the inner lens 30 are housed in the lamp chamber 60, and the housing 50 is not shown. Fig. 4 is a diagram showing the configuration along the BB cross section in Fig. 3.

[0021] 2 to 4, the vehicle lamp 100 includes a light source 10, a light guide 20, an inner lens 30, an outer lens 40, and a housing 50. The vehicle lamp 100 is configured such that the light source 10, the light guide 20, the inner lens 30, etc. are housed in a lamp chamber 60 surrounded by the housing 50 and the outer lens 40. The vehicle lamp 100 has a curved or bent shape, or a so-called slant shape, that is curved or bent toward the rear side from the inside of the vehicle to the outside of the vehicle.

[0022] The light source 10 may be, for example, a semiconductor light source such as an LED, a laser light source, etc. The light source 10 has a light emitting surface 11 that emits light.

[0023] The light guide 20 is, for example, rod-shaped. The light guide 20 has a first light guide section 21 and a second light guide section 22. The first light guide section 21 and the second light guide section 22 are vertically aligned and integrally formed via a connecting section 23 (see FIG. 4 , etc.). The first light guide section 21 and the second light guide section 22 extend in a curved manner toward the rear side, for example, from the inside of the vehicle to the outside of the vehicle, so as to follow the slanted shape of the vehicle lamp 100.

[0024] The first light guiding section 21 is disposed, for example, on the lower side. The first light guiding section 21 has a first incident section 24, a first reflecting section 25, and a first exit section 26. The first incident section 24 faces the light emitting surface 11 of the light source 10. The first incident section 24 causes light from the light source 10 to enter the inside of the light guide 20. In the first light guiding section 21, for example, the end face on the outer side and rear side of the vehicle serves as the first incident section 24. This shape allows the light from the light source 10 to be appropriately guided inside the slanted vehicle lamp 100.

[0025] The first reflecting portion 25 is provided on the back side of the light guide 20. The first reflecting portion 25 internally reflects the light incident from the first incident portion 24 toward the front side. A plurality of prism portions 25a are formed in the first reflecting portion 25. The plurality of prism portions 25a adjust the reflection direction so that the light is internally reflected toward the front side.

[0026] The first emission section 26 is provided on the front side of the light guide 20. The first emission section 26 emits light that has been internally reflected by the first reflection section 25 toward the front side. The first emission section 26 is formed so as to curve from the front side to the rear side from the inside of the vehicle to the outside of the vehicle. The first emission section 26 is arranged so as to face the first portion 31 of the inner lens 30. A prism section 26a is provided in the first emission section 26. The prism section 26a adjusts the emission direction of the light. By providing the prism section 26a, the first emission section 26 is configured to emit light toward the rear side of the first portion 31 of the inner lens 30, the lower surface of the second portion 32, and the lower surface portion 43 of the outer lens 40, which will be described later.

[0027] Second light guiding section 22 is disposed, for example, on the upper side. Second light guiding section 22 is connected to first light guiding section 21 via connecting section 23. Second light guiding section 22 guides light from first light guiding section 21 via connecting section 23. Second light guiding section 22 has second reflecting section 27 and second emitting section 28.

[0028] The second reflecting portion 27 is provided on the back side of the light guide 20. The second reflecting portion 27 internally reflects the light incident from the connecting portion 23 toward the front side. A plurality of prism portions 27a are formed on the second reflecting portion 27. The plurality of prism portions 27a adjust the reflection direction so that the light is internally reflected toward the front side.

[0029] The second exit portion 28 is provided on the front side of the light guide 20. The second exit portion 28 emits light that has been internally reflected by the second reflecting portion 27 toward the front side. The second exit portion 28 is formed so as to curve from the front side to the rear side from the inside of the vehicle to the outside of the vehicle. The second exit portion 28 is arranged so as to face the second portion 32 of the inner lens 30. The light emitted from the second exit portion 28 enters the second portion 32 of the inner lens 30 and is configured to be emitted toward the front side.

[0030] The inner lens 30 guides and emits the light emitted from the light guide 20. The inner lens 30 has, for example, a plate shape. The inner lens 30 has a first portion 31 and a second portion 32.

[0031] The first portion 31 is disposed along a front portion 41 of the outer lens 40, which will be described later. The first portion 31 has a rear end face 31a and a front end face 31b. The rear end face 31a faces the rear side. Light from the first light guiding portion 21 of the light guide 20 described above is incident on the rear end face 31a. The front end face 31b faces the front portion 41 of the outer lens 40. The front end face 31b emits light incident from the rear end face 31a toward the front portion 41.

[0032] The second portion 32 is disposed along an upper surface portion 42 of the outer lens 40, which will be described later. The second portion 32 is provided from the upper end of the first portion 31 toward the rear surface. The second portion 32 emits light toward the upper surface portion 42.

[0033] The second portion 32 has a rear end surface 32a, a front end surface 32b, a bottom surface 32c, and a top surface 32d. The rear end surface 32a is located at the end of the second portion 32 on the rear side. The rear end surface 32a faces the rear direction. Light from the second light guiding section 22 of the light guide 20 described above is incident on the rear end surface 32a.

[0034] The lower surface 32c is disposed below the second portion 32. Light from the first light guide portion 21 of the light guide 20 is incident on the lower surface 32c. The lower surface 32c faces downward. The lower surface 32c is provided with a prism portion 32e. The prism portion 32e refracts the light incident from the lower surface 32c toward the upper surface portion 42 of the outer lens 40.

[0035] The upper surface 32d is disposed on the upper side of the second portion 32. The upper surface 32d is disposed opposite the upper surface portion 42 of the outer lens 40. A prism portion 32f is provided on the upper surface 32d. The prism portion 32f refracts light that is emitted from the upper surface 32d. The upper surface 32d emits light that has entered from the lower surface 32c toward the upper surface portion 42.

[0036] The front end surface 32b is provided at the front end of the second portion 32. The front end surface 32b faces the front direction. The front end surface 32b emits light incident from the rear end surface 32a toward the front part 41 of the outer lens 40.

[0037] The outer lens 40 emits the light emitted from the inner lens 30 to the outside of the vehicle lamp 100. The outer lens 40 is plate-shaped. The outer lens 40, together with the housing 50, houses each part of the vehicle lamp 100. The outer lens 40 is formed, for example, using a transparent resin material or a resin material of a color similar to the lighting color.

[0038] The outer lens 40 has a front portion 41, an upper surface portion 42, a lower surface portion 43, and a side surface portion 44. The front portion 41 faces the front direction. The front portion 41 faces the front end surface 31b of the first portion 31 and the front end surface 32b of the second portion 32 of the inner lens 30. The front portion 41 transmits light emitted from the front end surfaces 31b, 32b in the front direction.

[0039] The upper surface portion 42 faces the upper surface 31c of the inner lens 30. The upper surface portion 42 transmits light emitted from the upper surface 32d obliquely upward toward the front side.

[0040] The lower surface portion 43 is disposed below the inner lens 30. The outer lens 40 has a shape in which the upper surface portion 42 and the lower surface portion 43 extend toward the front side so that the front surface portion 41 protrudes toward the front side.

[0041] The side surface portion 44 is provided at the end of the outer lens 40 that is on the inside of the vehicle. The side surface portion 44 is provided with a prism portion 44a. The prism portion 44a is formed, for example, on the inner surface of the side surface portion 44. The prism portion 44a reflects light that enters the outer lens 40 from the back door 7 side toward the back door 7 side.

[0042] The housing 50 holds the light source 10, the light guide 20, the inner lens 30 and the outer lens 40.

[0043] Next, an example of the operation of the vehicle lamp 100 configured as described above will be described. When the driver performs a predetermined operation to turn on the headlamps or the tail lamps and stop lamps that are turned on in conjunction with the brake device, the vehicle lamp 100 receives an operation signal from the operation device. A control circuit provided on the board or the like of the light source 10 controls the light emission of the light source 10 in accordance with the received signal.

[0044] Light is emitted from light-emitting surface 11 of light source 10. A portion of this light enters first light-guiding section 21 from first entrance section 24 of light guide 20, is internally reflected by prism section 25a of first reflecting section 25, and is emitted from first exit section 26.

[0045] 4, a portion of light L1 emitted in the front direction from first emission portion 26 is incident on rear end surface 31a of first portion 31 of inner lens 30. Light L1 incident on rear end surface 31a is guided in the thickness direction by first portion 31 and emitted in the front direction from front end surface 31b. Light L1 emitted from front end surface 31b passes through front portion 41 of outer lens 40 and is emitted in the front direction.

[0046] A portion of light L2 emitted from the first emission portion 26 obliquely upward toward the front surface is incident on the lower surface 32c of the second portion 32 of the inner lens 30. The light L2 incident on the lower surface 32c is refracted by the prism portion 32e and guided in the thickness direction of the second portion 32, and is emitted obliquely upward toward the front surface from the upper surface 32d via the prism portion 32f. The light L2 emitted from the upper surface 32d passes through the upper surface portion 42 of the outer lens 40 and is emitted obliquely upward toward the front surface.

[0047] A portion of the light L3 emitted from the first emission portion 26 obliquely downward toward the front side reaches the lower surface portion 43 of the outer lens 40. The light L3 that has reached the lower surface portion 43 is transmitted through the lower surface portion 43 and emitted obliquely downward toward the front side.

[0048] Another portion of the light emitted from the light-emitting surface 11 of the light source 10 and entering the inside of the first light guide section 21 enters the second light guide section 22 via the connection section 23, is internally reflected by the prism section 27a of the second reflecting section 27, and is emitted from the second emission section 28. The light L4 emitted from the second emission section 28 is incident on the rear end surface 32a of the second portion 32 of the inner lens 30. The light L4 incident on the rear end surface 32a reaches the front end surface 32b without being internally reflected by the bottom surface 32c and the top surface 32d, and is emitted from the front end surface 32b in the front direction. The light L4 emitted from the front end surface 32b passes through the front section 41 of the outer lens 40 and is emitted in the front direction.

[0049] In this embodiment, the light guide 20 emits light L1 toward the first portion 31 of the inner lens 30, emits light L2 and light L4 toward the second portion 32, and emits light L3 toward the bottom surface 43 of the outer lens 40. In this way, the lights L1, L2, L3, and L4 emitted from the light guide 20 are emitted uniformly from the front surface 41, the top surface 42, and the bottom surface 43 of the outer lens 40.

[0050] As described above, the vehicle lamp 100 according to this embodiment includes the light source 10, the light guide 20 that extends in the left-right direction when mounted on the vehicle and guides light from the light source 10 and emits it from the side, the inner lens 30 that is arranged along the side of the light guide 20 and guides the light emitted from the light guide 20 and emits it, and the outer lens 40 that transmits the light emitted from the inner lens 30. The outer lens 40 is plate-shaped and has an upper surface 42 and a lower surface 43 that protrudes toward the front side when mounted on the vehicle. The lower surface portion 43 has an extending shape, the inner lens 30 is plate-shaped, and has a first portion 31 arranged along the front surface portion 41 of the outer lens 40 and emitting light toward the front surface portion 41, and a second portion 32 arranged along the upper surface portion 42 of the outer lens 40 from the upper end of the first portion 31 toward the back side and emitting light toward the upper surface portion 42, and the light guide 20 is configured to emit light toward the first portion 31 and second portion 32 of the inner lens 30 and the lower surface portion 43 of the outer lens 40.

[0051] According to this configuration, when the vehicle lamp 100 is in a light-emitting state, the light beams L1, L2, L3, and L4 emitted from the light guide 20 are uniformly emitted from the front surface 41, the upper surface 42, and the lower surface 43 of the outer lens 40. This improves the appearance of the vehicle lamp 100 in a light-emitting state.

[0052] In the vehicle lamp 100 according to this embodiment, the light guide 20 has a first light guiding section 21 that emits light to at least the first portion 31, and the first portion 31 is provided to emit light from the first light guiding section 21 toward the front portion 41. With this configuration, light can be efficiently emitted from the front portion 41.

[0053] In the vehicle lamp 100 according to this embodiment, the first light guiding section 21 is formed to emit light toward the lower surface of the second section 32, and the second section 32 has prism sections 32e, 32f that refract the light from the first light guiding section 21 toward the upper surface section 42. With this configuration, light can be efficiently emitted from the upper surface section 42.

[0054] In the vehicular lamp 100 according to this embodiment, the first light guiding section 21 is provided so as to emit light toward the lower surface section 43. According to this configuration, the light can be efficiently emitted from the lower surface section 43.

[0055] In the vehicle lamp 100 according to this embodiment, the light guide 20 has a second light guiding section 22 that emits light toward the end face on the rear side of the second section 32, and the second section 32 is provided so as to guide the light from the second light guiding section 22 toward the front side along the extension direction of the second section 32 so as not to cause internal reflection of the light, and emit the light toward the front section 41. This configuration allows an observer looking at the front section 41 to visually perceive the light as if it were shining three-dimensionally.

[0056] The technical scope of the present invention is not limited to the above-described embodiment, and appropriate modifications can be made without departing from the spirit of the present invention. For example, in the above-described embodiment, the light guide 20 has the first light guide portion 21 and the second light guide portion 22, but the present invention is not limited to this.

[0057] Fig. 5 is a diagram showing a vehicular lamp 100A according to a modified example. As shown in Fig. 5, in the vehicular lamp 100A, the light guide 20A may have a third light guide section 29 separate from the first light guide section 21 and the second light guide section 22. The third light guide section 29 is disposed below the first light guide section 21 and connected to the first light guide section 21 via a connecting section 23A. For example, light from the light source 10 may be supplied to the third light guide section 29 via the first light guide section 21, or a light source (not shown) separate from the light source 10 may be disposed and light from the light source may be supplied to the third light guide section 29.

[0058] The third light guiding section 29 emits light L5 from the emission section 29a on the front side. The light L5 travels diagonally upward from the front side and enters the second section 32 of the inner lens 30 from the lower surface 32c. The light L5 that enters the second section 32 is emitted from the upper surface 32d via the prism section 32f, passes through the upper surface 42 of the outer lens 40, and is emitted to the outside. Therefore, the light can be efficiently emitted from the upper surface of the outer lens 40. [Explanation of symbols]

[0059] L1, L2, L3, L4, L5...light, 1...vehicle, 2...vehicle body, 3...traveling device, 4...tire, 7...back door, 10...light source, 11...light-emitting surface, 20, 20A...light guide, 21...first light guide section, 22...second light guide section, 22a, 25a, 26a, 27a, 28a, 32e, 32f, 44a...prism section, 23, 23A...connection section, 24...first incident section, 25...first reflecting section, 26...first emitting section, 27...second Reflection part, 28...Second emission part, 29...Third light guide part, 29a...Emission part, 30...Inner lens, 31...First part, 31a, 32a...Back side end face, 31b, 32b...Front side end face, 31c, 32d... Top surface, 32...Second part, 32c...Bottom surface, 40...Outer lens, 41...Front part, 42...Top part, 43...Bottom part, 44...Side part, 50...Housing, 60...Light chamber, 100,100A...Vehicle light fixture

Claims

1. A light source and a light guide extending in the left-right direction when mounted on a vehicle, guiding light from the light source and emitting it from a side surface; an inner lens disposed along the side surface of the light guide and configured to guide the light emitted from the light guide and emit the light; an outer lens that transmits the light emitted from the inner lens; Equipped with the outer lens is plate-shaped, and has an upper surface and a lower surface extending so that a front surface thereof protrudes toward the front side when the outer lens is mounted on a vehicle; the inner lens is plate-shaped and has a first portion that is arranged along the front surface portion of the outer lens and emits light toward the front surface portion, and a second portion that is arranged along the top surface portion of the outer lens from an upper end of the first portion toward a rear side and emits the light toward the top surface portion, The light guide is provided to emit light toward the first portion and the second portion of the inner lens and the lower surface portion of the outer lens. Vehicle lighting fixtures.

2. the light guide body has a first light guide portion that outputs the light to at least the first portion, The first portion is provided to emit the light from the first light guiding portion toward the front portion.

2. A vehicle lamp according to claim 1.

3. the first light guiding portion is formed to emit the light toward a lower surface of the second portion, The second portion has a prism portion that refracts the light from the first light guiding portion toward the upper surface portion.

3. A vehicle lamp according to claim 2.

4. The first light guiding portion is provided to emit the light toward the lower surface portion.

3. A vehicle lamp according to claim 2.

5. the light guide body has a second light guide portion that emits the light toward an end face on a rear side of the second portion, The second portion is provided to guide the light from the second light guiding portion to the front side along an extending direction of the second portion so as not to cause internal reflection of the light, and to emit the light toward the front portion. The vehicle lamp according to any one of claims 1 to 4.

6. The light guide has a first light guide portion that emits the light to at least the first portion, The light guide body includes a third light guide portion that emits the light toward a lower surface of the second portion, the third light guide portion being separate from the first light guide portion and the second light guide portion.

6. A vehicle lamp according to claim 5.

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