Vehicle lamp
The vehicle lamp design addresses visibility issues by incorporating emission steps and controlled light paths in the light guide to ensure continuous and uniform light emission, enhancing visibility and design.
Patent Information
- Application Number
- PCT/JP2025/013782
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-04-24
- Filing Date
- 2025-04-04
- Publication Date
- 2025-10-30
AI Technical Summary
Existing vehicle lamps with multiple light sources and a light guide suffer from reduced visibility due to a lack of continuity in the emission state between the display screen and the light exit surface, leading to potential visibility issues.
The vehicle lamp design includes a light guide with emission steps positioned outside the outer periphery of the display screen, segment portions with controlled light paths, and a continuous arrangement of light guide sections to enhance the sense of connection and uniformity of light emission.
This configuration improves visibility by ensuring a continuous and uniform light emission, reducing light leakage, and enhancing the sense of connection between the display screen and the light exit surface, thereby improving overall visibility and design.
Smart Images

Figure JP2025013782_30102025_PF_FP_ABST
Abstract
Description
Vehicle lighting fixtures
[0001] The present invention relates to a technical field of a vehicle lamp in which light emitted from a light source is guided by a light guide and then emitted.
[0002] Some vehicle lamps have a configuration in which multiple light sources and a light guide are arranged inside a lamp outer casing formed by a cover and a lamp housing, and light emitted from each of the multiple light sources is guided by the light guide and then emitted (see, for example, Patent Documents 1 and 2).In the vehicle lamps described in Patent Documents 1 and 2, light emitted from the multiple light sources is incident on the light guide from each incident surface, is internally reflected by the total reflection surface, is guided in a predetermined direction, and is emitted from the exit surface.
[0003] JP 2016-91825 A JP 2020-9673 A
[0004] Incidentally, in the above-described vehicle lighting fixtures, a display device for displaying an image may be provided in addition to the light guide, in which case display light is emitted from the display screen of the display device and light is emitted from the exit surface of the light guide.
[0005] In such a configuration, when the display screen and the light exit surface are positioned side by side and light is emitted from both simultaneously, if there is a lack of continuity in the emission state, visibility may be reduced. Therefore, it is desirable to increase the sense of continuity of the light emitted from the display screen and the light exit surface, thereby improving visibility.
[0006] SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle lamp that improves visibility.
[0007] The vehicle lamp of the present invention comprises a plurality of light sources that emit light, a light guide having an incident surface into which the light emitted from the light sources is incident, a plurality of emission steps that control the light incident from the incident surface, and an emission surface from which the light controlled by the emission steps is emitted, and a display device having a display screen, wherein the light guide has a light guide section having the emission steps and a transparent section that covers the display screen, which are provided in a continuous state, and the emission steps are formed on the inner surface of the light guide at least outside the outer periphery of the display screen.
[0008] As a result, the emission step is formed on the inner surface of the light guide, and is positioned at least outside the outer periphery of the display screen, so that the distance between the display screen and the emission step becomes short.
[0009] Another vehicle lamp according to the present invention comprises a plurality of light sources that emit light, and a light guide having a plurality of incident surfaces onto which the light emitted from the light sources is incident, a plurality of total reflection surfaces that internally reflect the light incident from the incident surfaces, and an exit surface from which the light reflected by the total reflection surfaces is emitted, wherein the light guide is provided with a plurality of segment portions that each have an incident surface and a total reflection surface and are arranged in a predetermined direction, and for each of the segment portions, the light incident from the incident surface is emitted from the exit surface.
[0010] As a result, the light emitted from each light source is guided to each segment section and emitted from each emission surface, so that the light guided in a segment section is less likely to affect the emission state of the light emitted from other segment sections positioned next to it.
[0011] According to the present invention, an emission step positioned at least outside the outer periphery of the display screen is formed on the inner surface of the light guide, thereby shortening the distance between the display screen and the emission step, enhancing the sense of connection between the display screen and the light emitted from the emission surface, and improving visibility.
[0012] 2 to 6 show an embodiment of the vehicle lamp of the present invention, and this figure is a perspective view of a vehicle to which the vehicle lamp is assembled. It is a cross-sectional view showing the positional relationship between a display device, a light guide, and an extension. It is a front view showing a part of the light guide. It is a perspective view showing a part of the light guide. It is a side view of the light guide shown together with the light path. It is a perspective view showing a part of the lower surface side of the light guide.
[0013] 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.
[0014] In the following, the front, rear, up, down, left and right directions will be described assuming that the direction of light emitted from the vehicle lamp is the front. However, the front, rear, up, down, left and right directions shown below are for the convenience of explanation, and the present invention is not limited to these directions in terms of implementation.
[0015] The vehicle lamp 1 comprises a lamp housing (not shown) having an opening at its front end, and a cover 2 that closes the opening of the lamp housing, with at least some of the required components being disposed in the internal space formed by the lamp housing and the cover 2 (see FIG. 1). The vehicle lamp 1 is mounted, for example, at a position extending from the center to both left and right sides at the front end of the vehicle 100, and is formed in a curved shape that displaces rearward and upward as it moves outward in the left-right direction, following the shape of the vehicle body.
[0016] The vehicle lamp 1 is provided with a display device 3, a light guide 4, and a light source 5. For example, one display device 3 is provided, the light guides 4 are arranged in positions extending from the front side of the display device 3 to the left and right, and a plurality of light sources 5 are provided. Note that the vehicle lamp 1 may be configured such that a pair of display devices 3 and light guides 4 are arranged side by side on the left and right, for example.
[0017] The display device 3 is disposed at the center in the left-right direction of the vehicle body, and has a display 6 provided as the front portion (see FIG. 2). The front of the display 6 is formed as a display screen 7. The display screen 7, for example, displays an emblem when the vehicle is moving, and is capable of displaying various other displays when the vehicle is not moving. As various displays when the vehicle is not moving, for example, a welcome light display is displayed before the vehicle starts moving. When the display screen 7 is in a non-display state, in which no display is being displayed, it is displayed in a dark color, for example, black.
[0018] The light guide 4 is made of a transparent resin material and each part is integrally formed, and has a transmissive part 8 that covers the display screen 7 from the front side, and a pair of light guide parts 9 positioned on the left and right of the transmissive part 8.
[0019] The transmission portion 8 is a portion that transmits display light that is emitted when an image (video) is displayed on the display screen 7. Therefore, a viewer can view the image displayed on the display screen 7 through the cover 2 and the transmission portion 8.
[0020] The light guide section 9 is configured by arranging a plurality of segments 10 side by side (see FIG. 3 ). In FIG. 3 , each segment 10 is shown separated by a dashed line. The plurality of segments 10 are formed in a stepped pattern, positioned further rearward as they move outward in the left-right direction in accordance with the shape of the vehicle body, and positioned one step higher as they move outward in the left-right direction.
[0021] The segment portion 10 has an intermediate portion 11 that is inclined downward toward the front, a first portion 12 that is connected to the upper end of the intermediate portion 11, and a second portion 13 that is connected to the lower end of the intermediate portion 11 (see Figures 4 and 5).
[0022] The front surface (outer surface) of intermediate portion 11 has upper and lower ends formed as first total reflection surfaces 14 and second total reflection surfaces 15, respectively. First total reflection surface 14 has, for example, a plurality of first reflection portions 14a arranged vertically and horizontally. Light incident on first reflection portion 14a is totally reflected by first reflection portion 14a and directed to second total reflection surface 15 located below. At this time, the light is directed in a slightly diffused state. Second total reflection surface 15 has, for example, a plurality of second reflection portions 15a arranged vertically and horizontally. Light incident on second reflection portion 15a is totally reflected by second reflection portion 15a and directed to first total reflection surface 14 located above. At this time, the light is directed in a slightly diffused state.
[0023] The pitch of the first reflecting portions 14 a formed on the first total reflecting surface 14 and the pitch of the second reflecting portions 15 a formed on the second total reflecting surface 15 are set to be the same as the pitch of the luminous dots in the display device 3 .
[0024] In intermediate section 11, a large number of exit steps 16 are formed, for example, lined up vertically and horizontally, between first total reflection surface 14 and second total reflection surface 15. Exit steps 16 are formed on the rear surface (inner surface) of intermediate section 11. The front surface of intermediate section 11, in front of the part where exit steps 16 are formed, is formed as exit surface 17.
[0025] The first portion 12 has a plate-shaped first reflection control portion 18 facing substantially vertically and a first light entrance portion 19 protruding upward from the first reflection control portion 18. The first reflection control portion 18 may be slightly inclined with respect to the horizontal direction. The first reflection control portion 18 is formed with a plurality of first light reflecting surfaces (not shown) that internally reflect (total reflect) light. The upper surface of the first light entrance portion 19 is formed as a first incident surface 19a.
[0026] The second portion 13 has a plate-shaped second reflection control portion 20 facing approximately in the front-to-rear direction and a second light entrance portion 21 protruding rearward from the second reflection control portion 20. The second reflection control portion 20 may be slightly inclined with respect to the vertical direction. The second reflection control portion 20 is formed with a plurality of second light reflecting surfaces (not shown) that internally reflect (total reflect) light. The rear surface of the second light entrance portion 21 is formed as a second incident surface 21a.
[0027] As described above, the light guide 9 has a plurality of segments 10 arranged side by side, and the segments 10 are arranged in a stepped pattern, with each step positioned higher as it moves outward in the left-right direction (see FIG. 3 ). Because the segments 10 are arranged in this manner, a gap S is formed between the first portions 12 of adjacent segments 10 (see FIG. 6 ). Similarly, a gap S (not shown) is also formed between the second portions 13 of adjacent segments 10.
[0028] Because such gaps S may cause light leakage or a decrease in the strength of the light-guiding section 9, the gaps S between adjacent first sections 12 and the gaps S between adjacent second sections 13 are each closed by a closing plate section 22. The closing plate section 22 is formed, for example, in a rectangular shape having a longitudinal direction. The longitudinal direction of the closing plate section 22 is perpendicular to the direction in which the multiple segments 10 are arranged and perpendicular to the thickness direction of the first section 12 or the second section 13.
[0029] In the adjacent first portions 12, the closing plate portion 22 has its ends 22a, 22b in the short direction joined to one first portion 12 and the other first portion 12. In the adjacent second portions 13, the closing plate portion 22 has its ends 22a, 22b joined to one second portion 13 and the other second portion 13, respectively.
[0030] The end face 22c of the closure plate portion 22 on the intermediate portion 11 side in the longitudinal direction is positioned near the inner surface (rear surface) 11a of the intermediate portion 11, and the end face 22c does not protrude beyond the inner surface 11a.
[0031] When the end face 22c is in a state where it protrudes from the inner surface 11a or is in a state where it is coincident with the inner surface 11a, a portion of the light emitted from the light source 5 and incident on the first light entrance section 19 or the second light entrance section 21 from the first incident surface 19a or the second incident surface 21a may enter the intermediate section 11 from the end face 22c as leakage light R and may be irradiated to the outside as a streak of light.
[0032] Therefore, by preventing the end face 22c from protruding from the inner surface 11a as described above, streaks of light caused by leaked light R are less likely to occur, and good light emission conditions in the vehicle lamp 1 can be ensured.
[0033] The light sources 5 are respectively disposed at positions facing the first incident surface 19a of the first light incident portion 19 and at positions facing the second incident surface 21a of the second light incident portion 21 (see FIGS. 3 and 5). As the light sources 5, for example, light emitting diodes (LEDs) are used, and one light source 5 is provided with one RGB LED each.
[0034] An extension 23 is disposed behind the display device 3 and the light guide 4 (see FIG. 2). The extension 23 has a first cover portion 24 that covers the display device 3 and a second cover portion 25 that covers the light guide portion 9 of the light guide 4. The surface of the extension 23 that covers the display device 3 and the light guide portion 9 is dark in color, for example, black.
[0035] The first cover 24 has a flat plate portion 24a that covers the rear surface of the display device 3 from the rear side, and a frame portion 24b that protrudes forward from the outer periphery of the flat plate portion 24a. The second cover 25 is curved along the light guide 9, and its front surface is formed as an opposing surface 25a that is positioned opposite the light guide 9. One end A of the opposing surface 25a on the display device 3 side of the second cover 25 is aligned with both left and right ends B of the outer periphery of the display screen 7 of the display device 3.
[0036] In this way, by aligning both ends B of the display screen 7 with one end A of the opposing surface 25a, no gap or step occurs between the display screen 7 and the opposing surface 25a, so when the light source 5 is not lit and the display screen 7 is in a non-display state, the display screen 7 and the opposing surface 25a can be seen in a continuous state, creating a good sense of connection between the display screen 7 and the opposing surface 25a and improving visibility.
[0037] In particular, by making the color of the display screen 7 and the color of the opposing surface 25a similar, the display screen 7 and the opposing surface 25a, which are similar in color, can be seen when the light source 5 is not lit and the display screen 7 is in a non-display state, creating a good sense of unity between the display screen 7 and the opposing surface 25a and further improving visibility.
[0038] Furthermore, the color of the display screen 7 and the color of the opposing surface 25a may be similar to the color of the vehicle body. In this case, when the light source 5 is not lit and the display screen 7 is in a non-display state, the display screen 7 and the opposing surface 25a, which are similar in color to the vehicle body, can be seen. This creates a good sense of unity between the display screen 7 and the opposing surface 25a, as well as a good sense of unity between the display screen 7, the opposing surface 25a, and the vehicle body, thereby further improving visibility.
[0039] Although the above example shows the display screen 7 and the opposing surface 25a being black, the color of the display screen 7 and the opposing surface 25a is not limited to black, and may be any color other than black as long as it is a similar color.
[0040] Furthermore, in the vehicle lamp 1, both ends B of the display screen 7 and one end C of the light-guiding section 9 on the display screen 7 side are positioned close to each other, so the distance between the opposing surface 25a and the transmissive section 8 in the front and rear directions is made very small.
[0041] Therefore, since the distance between the display screen 7 and the transmissive section 8 is reduced, when the light source 5 is turned on and the display screen 7 is in a display state, the display light emitted from the display screen 7 and the light emitted from the emission surface 17 can be easily seen continuously, creating a good sense of connection between the two lights and improving visibility.
[0042] In the vehicle lamp 1, it is desirable that the pitch of the light-emitting dots in the display device 3 and the pitch of the emission steps 16 formed in the light guide section 9 are the same.
[0043] In this way, by making the pitch of the light-emitting dots in the display device 3 the same as the pitch of the emission steps 16, the light-emitting dots that emit display light for the image displayed on the display screen 7 and the emission steps 16 that control the light emitted from the emission surface 17 are made to have the same pitch, making it less likely that there will be a difference in the visibility of the light emitted from the display device 3 and the light emitted from the light guide 4, and thereby improving visibility.
[0044] Furthermore, in the vehicle lamp 1, a light guide section 9 having an emission step 16 and a transmission section 8 covering the display screen 7 are provided in a continuous state in the light guide 4, and the emission step 16 is formed on the inner surface of the light guide 4 at least outside the outer periphery of the display screen 7.
[0045] Therefore, since the emission step 16 positioned at least outside the outer periphery of the display screen 7 is formed on the inner surface of the light guide 4, the distance between the display screen 7 and the emission step 16 is shortened, and when the light source 5 is turned on and the display screen 7 is in a display state, the sense of connection (continuity) between the display light emitted from the display screen 7 and the light emitted from the light guide section 9 is enhanced, thereby improving visibility.
[0046] Although the above example shows the emitting steps 16 positioned outside the outer periphery of the display screen 7, the vehicular lamp 1 may be configured so that the emitting steps 16 are positioned on the front side of the outer periphery of the display screen 7. In this case, the number (density) of the emitting steps 16 positioned on the front side of the outer periphery of the display screen 7 may be less than the number (density) of the emitting steps 16 positioned outside the outer periphery of the display screen 7.
[0047] In each segment 10 of the vehicle lamp 1 configured as described above, when light is emitted from the light source 5 positioned opposite the first incident surface 19a, the emitted light is incident from the first incident surface 19a to the first reflection control portion 18 (see FIGS. 4 and 5). The light incident on the first reflection control portion 18 is internally reflected at least once by the plurality of first light reflecting surfaces, and then incident on the first total reflection surface 14, and is internally reflected by each of the first reflecting portions 14a of the first total reflection surface 14, and is guided inside the intermediate portion 11.
[0048] At this time, the light is guided into the intermediate section 11 in a slightly diffused state by the first reflecting portion 14a of the first total reflection surface 14, and is then controlled by the emitting step 16 to be transmitted through the cover 2 and irradiated to the outside. Because the light is slightly diffused, it is easier to irradiate the light to the outside in a uniform state. Furthermore, because the light is slightly diffused, even if the focal lengths of the light emitted from the RGB light-emitting diodes of the light source 5 are slightly different, the non-uniformity of the light due to the difference in focal length is corrected, and it is easier to irradiate the light to the outside in an appropriate state.
[0049] In each segment 10 of the vehicle lamp 1, when light is emitted from the light source 5 positioned opposite the first incident surface 19a, light is also emitted from the light source 5 positioned opposite the second incident surface 21a at the same time (see FIG. 5). The light emitted from the light source 5 positioned opposite the second incident surface 21a enters the second reflection control section 20 from the second incident surface 21a, is internally reflected at least once by the plurality of second light reflecting surfaces, is incident on the second total reflecting surface 15, is internally reflected by each of the second reflecting portions 15a of the second total reflecting surface 15, and is guided inside the intermediate section 11.
[0050] At this time, the light is guided inside intermediate section 11 in a slightly diffused state by second reflecting portion 15a of second total reflection surface 15, and is then controlled by emission step 16 to be transmitted through cover 2 and irradiated toward the outside. Because the light is slightly diffused, similar to the light reflected by first total reflection surface 14, the light is more likely to be irradiated toward the outside in a uniform state, and the non-uniformity of the light due to differences in the focal lengths of the light emitted from each of the RGB light-emitting diodes of light source 5 is corrected, making it easier to irradiate the light in an appropriate state.
[0051] The above-described irradiation of light emitted from the light source 5 toward the outside is performed for each segment 10. For example, in two adjacent segments 10, light emitted from the light source 5 and incident on one segment 10 is guided inside the intermediate section 11 of one segment 10, controlled by the emission step 16 of the one segment 10, and emitted toward the outside from the emission surface 17 of the one segment 10, while light emitted from the light source 5 and incident on the other segment 10 is guided inside the intermediate section 11 of the other segment 10, controlled by the emission step 16 of the other segment 10, and emitted toward the outside from the emission surface 17 of the other segment 10. Therefore, the configuration is such that light incident on one segment 10 does not affect the state of irradiation of light from the other segment 10, and light incident on the other segment 10 does not affect the state of irradiation of light from one segment 10.
[0052] However, in the vehicle lamp 1, a small portion of the light incident on one segment portion 10 may be incident on the other segment portion 10 and emitted from the other segment portion 10, and a small portion of the light incident on the other segment portion 10 may be incident on one segment portion 10 and emitted from the one segment portion 10.
[0053] However, in vehicle lighting fixtures such as those described in Patent Documents 1 and 2, when light incident from multiple light sources is emitted simultaneously from the entire exit surface of the light guide, there is a risk that visibility will be reduced if the brightness of the light incident from each part of the exit surface differs depending on the positions of the multiple light sources and the light guide direction of each light.
[0054] Therefore, in order to achieve high visibility, it is desirable to ensure that the light is emitted uniformly.
[0055] As described above, in the vehicle lamp 1, the light guide 4 is provided with a plurality of segment portions 10 arranged in a predetermined direction, each having a first incident surface 19a, a second incident surface 21a, a first total reflection surface 14, and a second total reflection surface 15, and light incident from the first incident surface 19a and the second incident surface 21a for each segment portion 10 is emitted from the exit surface 17.
[0056] Therefore, since the light emitted from each light source 5 is guided in each segment section 10 and emitted from each exit surface 17, the light guided in the segment section 10 is less likely to affect the emission state of the light emitted from other segment sections 10 positioned next to it, and uniformity in the brightness of the light emitted from all of the multiple exit surfaces 17 can be achieved.
[0057] In particular, the configuration in which light is controlled and emitted for each segment section 10 as described above is unlikely to affect the light emission state of adjacent segment sections 10, so that, for example, when sequential light is emitted in which light is emitted in order for each segment section 10, each light emitted from each segment section 10 can be clearly seen, making this a configuration that is also effective when sequential light is emitted.
[0058] Furthermore, the first total reflection surface 14 and the second total reflection surface 15 are each composed of a plurality of first reflection sections 14a and a plurality of second reflection sections 15a arranged in a predetermined state, and light is reflected in a diffused state by the first reflection sections 14a and the second reflection sections 15a, so that the diffused light is guided to and emitted from the exit surface 17, thereby further improving the uniformity of the brightness of the light.
[0059] Furthermore, since the first total reflection surface 14 and the second total reflection surface 15 each have a plurality of first reflection portions 14a and second reflection portions 15a, the light is controlled by each first reflection portion 14a and each second reflection portion 15a, thereby reducing unevenness in the light emitted from the exit surface 17 and improving the uniformity of the light.
[0060] Furthermore, a display device 3 having a display screen 7 is provided, and a light guide section 9 having a plurality of segment sections 10 and a transmission section 8 covering the display screen 7 are provided in a continuous state in a light guide body 4 .
[0061] Therefore, the image displayed on the display screen 7 can be seen by the light transmitted through the transmitting section 8, and light controlled for each segment section 10 is emitted from the light guiding section 9, so that the image displayed on the display screen 7 and the light emitted from the light guiding section 9 can be seen simultaneously, thereby improving visibility and design.
[0062] Furthermore, a first incident surface 19a and a second incident surface 21a are formed as incident surfaces, and a first total reflection surface 14 and a second total reflection surface 15 are formed as total reflection surfaces, with the first incident surface 19a and the second incident surface 21a positioned on opposite sides of the exit surface 17, and the first total reflection surface 14 and the second total reflection surface 15 positioned on opposite sides of the exit surface 17.
[0063] Therefore, since all light incident from the opposite side is emitted from the exit surface 17, it is possible to improve the uniformity of light in the light guide direction and also improve the brightness of the light by increasing the amount of light.
[0064] In the above, an example is shown in which the light-guiding section 9 is provided with a first section 12 and a second section 13, and light is guided from the opposite side of the intermediate section 11, but the vehicle lamp 1 may be configured so that only one of the first section 12 or the second section 13 is provided, and light is guided to the intermediate section 11.
[0065] In addition, the light incident directions on the first incident surface 19a and the second incident surface 21a are different from each other.
[0066] Therefore, it is possible to make the emission direction of light incident on the first incident surface 19a different from the emission direction of light incident on the second incident surface 21a, which increases the freedom in the placement position of each light source 5 and enables the vehicle lamp 1 to be made smaller.
[0067] In particular, as described above, by configuring the light source 5 to be located behind the second part 13, which is located forward of the first part 12, the front-to-rear size of the vehicle lamp 1 is unlikely to become large, and it is possible to reduce the size of the vehicle lamp 1 in the front-to-rear direction.
[0068] DESCRIPTION OF SYMBOLS 1 Vehicle lamp 3 Display device 4 Light guide 5 Light source 7 Display screen 8 Transmitting section 9 Light guide section 10 Segment section 11 Intermediate section 14 First total reflection surface 14a First reflection section 15 Second total reflection surface 15a Second reflection section 16 Emitting step 17 Emitting surface 19a First incident surface 21a Second incident surface 25 Extension 25a Opposing surface
Claims
1. A vehicle lamp comprising: a plurality of light sources that emit light; a light guide having an incident surface onto which the light emitted from the light sources is incident, a plurality of emission steps that control the light incident from the incident surface, and an emission surface from which the light controlled by the emission steps is emitted; and a display device having a display screen, wherein a light guide section having the emission steps and a transmission section that covers the display screen are provided in a continuous state in the light guide, and the emission steps are formed on the inner surface of the light guide at least outside the periphery of the display screen.
2. A vehicle lamp according to claim 1, wherein the outer periphery of the display screen and one end of the light guide section on the display screen side are positioned close to each other.
3. A vehicle lamp according to claim 1 or 2, wherein the pitch of the light-emitting dots in the display device and the pitch of the emission steps are the same.
4. A vehicle lamp as claimed in claim 1, wherein an extension is provided having a facing surface positioned opposite the inner surface of the light guide and aligned with the display screen, and the periphery of the display screen coincides with one end of the facing surface on the display screen side.
5. A vehicle lamp according to claim 4, wherein the color of the display screen and the color of the opposing surface are similar colors.
6. A vehicle lamp comprising: a plurality of light sources that emit light; and a light guide having a plurality of incident surfaces onto which the light emitted from the light sources is incident, a plurality of total reflection surfaces that internally reflect the light incident from the incident surfaces, and an exit surface from which the light reflected by the total reflection surfaces is emitted, wherein the light guide is provided with a plurality of segment parts that each have the incident surface and the total reflection surface and are arranged in a predetermined direction, and for each of the segment parts, the light incident from the incident surface is emitted from the exit surface.
7. A vehicle lamp according to claim 6, wherein the total reflection surface is constituted by a plurality of reflecting portions arranged in a predetermined state, and the light is reflected in a diffused state by the reflecting portions.
8. A vehicle lamp according to claim 6 or claim 7, wherein a display device having a display screen is provided, and a light guide section having a plurality of said segment sections and a transmission section covering said display screen are provided in said light guide member in a continuous state.
9. A vehicle lamp according to claim 6 or 7, wherein a first incident surface and a second incident surface are formed as the incident surfaces, a first total reflection surface and a second total reflection surface are formed as the total reflection surfaces, the first incident surface and the second incident surface are positioned on opposite sides of the exit surface, and the first total reflection surface and the second total reflection surface are positioned on opposite sides of the exit surface.
10. A vehicle lamp according to claim 9, wherein the directions of incidence of light on the first incident surface and the second incident surface are different.
Citation Information
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