Vehicle sunshade
Patent Information
- Authority / Receiving Office
- TH · TH
- Patent Type
- Applications
- Filing Date
- 2021-12-01
- Publication Date
- 2026-06-29
AI Technical Summary
Existing vehicle sun visors with integrated lighting face issues due to gaps between light guide plates and mirrors, which can lead to light blockage by air or dust, causing glare and uneven light distribution.
A vehicle sun visor design where a light guide plate is positioned on the front side of the light source, with a mirror plate overlapping it in the thickness direction, and a diffusing member directly attached to the mirror plate's back surface, eliminating gaps and ensuring light is diffused at a suitable angle without glare.
The solution prevents light blockage and glare by ensuring close contact between the diffusing member and mirror plate, providing uniform and directed illumination to the user.
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Abstract
Description
Vehicle sun visor
[0001] The present invention relates to a sun visor for a vehicle that includes a mirror.
[0002] Patent Document 1 discloses a lighting device that is applied to an automobile combination meter, etc. This lighting device includes a light source and a light guide plate, and the light guide plate has a reflective surface at its end. The light source is positioned so that only the half of the light that is closest to the light guide plate from the optical axis is reflected by the reflective surface. The light reflected by the reflective surface travels inside the light guide plate and is reflected and diffused by the textured surface at the bottom of the light guide plate.
[0003] Patent Document 2 discloses a lighting device provided in a mirror unit of a vehicle sun visor. This lighting device has an LED as a light source, and the LED is adjacent to the side edge of a light guide plate that constitutes the mirror. However, because the light guide plate is thin, it is not easy to place the LED adjacent to the side edge of the light guide plate. Therefore, it is considered to apply the lighting device described in Patent Document 1 to the back side of the light guide plate. That is, a lighting light guide plate is provided in parallel to the back side of the mirror light guide plate. The lighting light guide plate reflects and diffuses light with a textured surface on the bottom surface. The diffused light enters the light-emitting area of the mirror light guide plate.
[0004] Japanese Patent No. 3838187 Japanese Patent Application Laid-Open No. 2011-183958
[0005] However, there is a gap, or layer of air, between the lighting light guide plate and the mirror light guide plate. Dust can get into the gap. This raises concerns that the air or dust in the gap could block the light or polarize it in an undesired direction. Therefore, there has been a need for a vehicle sun visor that has a light source located on the back side of the mirror plate (light guide plate) that makes up the mirror, and is configured to emit light from the light source at a preferred angle.
[0006] According to one feature of the present disclosure, a vehicle sun visor equipped with a mirror and a light source includes a plate-shaped visor body and a light source provided within the visor body. A light guide plate through which light from the light source can pass is disposed on the front side of the light source. One of the end faces of the light guide plate is a first emission surface that reflects light entering the light guide plate from the back side of the light guide plate along the light guide plate. A second emission surface is formed on the back side of the light guide plate that reflects light passing along the light guide plate to the front side. A mirror plate is disposed juxtaposed to the front side of the light guide plate. The mirror plate has a mirror region that covers the light source and the first emission surface of the light guide plate from the front side. A reflective film that forms a mirror is attached to the back side of the mirror region of the mirror plate. The mirror plate has a light-emitting region that covers the second emission surface of the light guide plate from the front side. A diffusion member is directly and closely contacted to the back side of the light-emitting region of the mirror plate, and the diffusion member diffuses light from the light guide plate to the front side.
[0007] Therefore, the light guide plate and mirror plate are stacked in the thickness direction. This allows the mirror and light-emitting structure to be formed in a relatively thin structure. The diffusion member is in direct contact with the back surface of the mirror plate. Therefore, no gap is formed between the diffusion member and the mirror plate. As a result, light passing through the diffusion member is not blocked or polarized by air in the gap or dust that has gotten into the gap. As a result, light emitted from the light-emitting area of the mirror plate is diffused toward the user at an appropriate angle. The light source and the first exit surface of the light guide plate are covered with a reflective film. This prevents the light source and the first exit surface of the light guide plate from directly entering the user's field of vision. This prevents the user from feeling dazzled.
[0008] According to another feature of the present disclosure, the diffusing member is formed by a concave-convex shape formed on the back surface of the light-emitting area of the mirror plate. In other words, the diffusing member is not a separate component from the mirror plate, but is formed on the mirror plate itself. This reduces the number of parts in the vehicle sun visor. Furthermore, because the diffusing member is formed on the mirror plate itself, no gap is formed between the mirror plate and the diffusing member.
[0009] According to another feature of the present disclosure, the diffusing member has a smooth surface that directly contacts the rear surface of the mirror plate and a back surface that has an uneven shape to diffuse light. Therefore, when the smooth surface of the diffusing member is in close contact with the rear surface of the mirror plate, the contact area between the mirror plate and the diffusing member is increased. This more reliably prevents gaps from forming at the contact surface between the mirror plate and the diffusing member. Therefore, light emitted from the light-emitting region of the mirror plate is diffused toward the user at a suitable angle. Furthermore, the strength of the contact between the mirror plate and the diffusing member can be improved.
[0010] According to another feature of the present disclosure, a planar coloring member containing a coloring material is provided on the back surface of the diffusing member. Therefore, light from the light guide plate is colored by passing through the coloring member. This allows the color of light emitted from the light-emitting region of the mirror plate to be set as desired. The coloring member is located upstream of the diffusing member. Therefore, the coloring member can be made relatively small. For example, if the coloring member is located downstream of the diffusing member, it needs to be enlarged to take into account the diffusion of light. Compared to this structure, the coloring member can be made relatively small.
[0011] According to another feature of the present disclosure, a vehicle sun visor includes a second diffusing member that directly contacts the back surface of the diffusing member of the mirror plate. The second diffusing member has a smooth surface that contacts the diffusing member and a back surface that has an uneven shape to diffuse light. Therefore, light from the light guide plate is diffused by the second diffusing member. The light emitted from the second diffusing member is further diffused by the diffusing member of the mirror plate. As a result, light emitted from the light-emitting area of the mirror plate is diffused toward the user over a wider angle.
[0012] 11 is a perspective view of a part of the interior of a vehicle and a sun visor attached to the vehicle ceiling. FIG. 11 is a perspective view of the sun visor with the mirror unit lid open. FIG. 11 is a cross-sectional view taken along line III-III in FIG. 2. FIG. 11 is an exploded perspective view of the mirror unit. FIG. 11 is a rear perspective view of the mirror plate. FIG. 11 is a cross-sectional view taken along line VI-VI in FIG. 4. FIG. 11 is a cross-sectional view taken along line VII-VII in FIG. 2. FIG. 11 is a partial enlarged view of VIII in FIG. 7. FIG. 11 is a cross-sectional view of a mirror plate and a diffusing member corresponding to FIG. 6 in another embodiment. FIG. 11 is a cross-sectional view of a mirror plate and a diffusing member corresponding to FIG. 6 in another embodiment. FIG. 11 is a cross-sectional view of a mirror plate corresponding to FIG. 6 in another embodiment. FIG. 11 is a partial enlarged view of XII in FIG. 11.
[0013] One embodiment of the present invention will be described with reference to Figures 1 to 8. As shown in Figure 1, a vehicle sun visor 1 is attached to a ceiling surface 21 adjacent to the upper edge of a windshield 20 inside a vehicle cabin. The vehicle sun visor 1 includes a plate-shaped visor body 10 and a mirror unit 2 provided on one side of the visor body 10. The visor body 10 includes a flat plate-shaped first shell 10a and a second shell 10b stacked in the thickness direction. A skin 10c is applied to the surface of the visor body 10 (see Figure 7).
[0014] As shown in Figure 1, a support shaft 11 and a support shaft 13 are attached to the visor body 10. The support shaft 11 is a generally L-shaped rod having a horizontal shaft 11a and a vertical shaft 11b. The horizontal shaft 11a is long and linear, and is rotatably inserted into the upper side of the visor body 10. The vertical shaft 11b extends upward from the tip of the horizontal shaft 11a, generally perpendicular to the horizontal shaft 11a. The tip of the vertical shaft 11b is rotatably attached to a bracket 12. The bracket 12 is attached to a ceiling surface 21 of the vehicle interior.
[0015] 1 , the support shaft 13 is substantially cylindrical and is removably held by a hook 23 fixed to the ceiling surface 21. By attaching the support shaft 13 to the hook 23, the visor body 10 rotates about the support shaft 13 and the horizontal shaft 11a between a use position P along the windshield 20 and a storage position K along the ceiling surface 21. Furthermore, by removing the support shaft 13 from the hook 23, the visor body 10 becomes rotatable about the vertical shaft 11b. As a result, the visor body 10 rotates between the use position P along the windshield 20 and a side position S along the side window 22.
[0016] 2 and 3, the mirror unit 2 has an openable and closable lid 2b. The following description will be given with the visor body 10 positioned in the use position P, and the top, bottom, left, right, front and back directions defined based on the state seen from the user. One side (front surface) of the visor body 10 is formed with a rectangular mirror housing portion 10d, where the first shell 10a is recessed in the thickness direction toward the inside of the visor body 10. The mirror unit 2 is fitted into the mirror housing portion 10d.
[0017] As shown in Fig. 4, the mirror unit 2 has a rectangular mirror frame 2a. A lid 2b is attached to the front side of the mirror frame 2a in an openable and closable manner. A mirror plate 3, a reflector 6, and a unit base 5 are attached to the back side of the mirror frame 2a, in that order. A light source 4 is provided on the unit base 5. The mirror plate 3 can be covered by closing the lid 2b. A diffusion sheet 7 (diffusion member) is disposed on the back side of the mirror plate 3, as shown in Fig. 5.
[0018] As shown in Figure 4, the unit base 5 has a base 5a with a notch 5d formed in the center of the base 5a. Boards 5b are arranged on both the left and right sides of the base 5a. A plurality of light sources 4, for example, three light sources 4, are arranged on each board 5b. The light sources 4 are, for example, light-emitting diodes (LEDs). A switch 5c for turning the power of the light sources 4 on and off is arranged above the notch 5d.
[0019] 4 and 8, a reflector 6 equipped with a light guide plate 6a is disposed on the unit base 5. The reflectors 6 are disposed on both the left and right sides of the base 5a and cover the substrate 5b on which the light source 4 is mounted. The light guide plate 6a is rectangular and covers the substrate 5b. All surfaces of the light guide plate 6a except for the front surface are surrounded by the reflector 6. The reflector 6 has a reflecting plate 6d on the surface that contacts the back surface of the light guide plate 6a.
[0020] As shown in Figure 4, a flat, plate-shaped mirror plate 3 is provided alongside the front side of the light guide plate 6a. The mirror plate 3 is attached to the mirror frame 2a and covers the left and right reflectors 6. As a result, the left and right light guide plates 6a are covered by one mirror plate 3. The upper edge of the lid 2b is rotatably attached to the mirror frame 2a. As a result, the lid 2b can be rotated upward as shown in Figure 3, exposing the mirror plate 3.
[0021] The mirror plate 3 is, for example, a glass half mirror. As shown in Fig. 4, the mirror plate 3 has a mirror region 3a in the center in the left-right direction, which acts as a mirror, and light-emitting regions 3b on both the left and right sides, which act as illuminators. As shown in Figs. 7 and 8, the mirror region 3a covers the light source 4 and the first light exit surface 6b of the light guide plate 6a from the front side. The light-emitting region 3b covers the second light exit surface 6c of the light guide plate 6a from the front side. A silver film is attached to the back surface of the mirror region 3a as a reflective film 8 that constitutes the mirror.
[0022] As shown in Fig. 5, the reflective film 8 is attached to the rear surface of the mirror plate 3. Specifically, a silver film is attached by printing from the center to both left and right sides on the rear surface of the mirror plate 3, excluding both left and right ends of the mirror plate 3. The portions of the mirror plate 3 where the silver film is attached become a mirror surface, and reflect light incident from the front side of the mirror plate 3. In other words, they function as mirror regions 3a.
[0023] As shown in Figures 5 and 6, the diffusion sheet 7 is in direct contact with the back surface 3d of the light-emitting region 3b of the mirror plate 3. For example, the diffusion sheet 7 is attached to the mirror plate 3 with an adhesive or double-sided adhesive tape. The diffusion sheet 7 has a smooth surface 7a and an uneven surface 7b. The smooth surface 7a serves as the front surface of the diffusion sheet 7 and is in direct contact with the back surface of the mirror plate 3. The uneven surface 7b serves as the back surface of the diffusion sheet 7 and has an uneven shape to diffuse light. The uneven shapes are arranged alternately in the left-right direction and extend in the up-down direction. The diffusion sheet 7 diffuses light toward the front surface by changing the angle of the light from the light guide plate 6a toward the front surface. By adhering the back surface 3d of the light-emitting region 3b to the smooth surface 7a of the diffusion sheet 7, the formation of a gap between the mirror plate 3 and the diffusion sheet 7 is suppressed.
[0024] As shown in FIG. 8 , the light guide plate 6a is made of a material through which light from the light source 4 can pass. For example, acrylic resin is used. The light guide plate 6a has an end face toward the center of the unit base 5, and the end face has a first exit surface 6b on the back surface thereof, which is inclined from the center of the unit base 5 toward the end in the left-right direction. The first exit surface 6b is inclined toward the base 5a of the unit base 5. The first exit surface 6b is positioned so as to overlap with the light beam from the light source 4. The first exit surface 6b reflects light entering the light guide plate 6a from the back surface of the light guide plate 6a along the light guide plate 6a. The light guide plate 6a is patterned so that light reflected by the first exit surface 6b exits from the front surface of the light guide plate 6a. The back surface of the light guide plate 6a is in contact with the reflector plate 6d of the reflector 6. The back surface of the light guide plate 6a is formed with a second exit surface 6c that reflects light passing along the light guide plate 6a to the front side.
[0025] As shown in Figure 3, the mirror unit 2 is provided with a switch 5c that is turned on when the cover 2b is open and turned off when the cover 2b is closed. When the switch 5c is turned on, it electrically connects or disconnects the board 5b to the vehicle's power supply. An electric wire from the vehicle's power supply runs from the ceiling surface 21 through the support shaft 11 and the visor body 10 and is connected to the switch 5c and the board 5b. This supplies power to the light source 4, causing it to emit light.
[0026] As shown in Figure 8, light emitted from the light source 4 enters the light guide plate 6a from the rear surface of the light guide plate 6a and is reflected by the first exit surface 6b. The light reflected from the first exit surface 6b travels through the light guide plate 6a either while being reflected along the light guide plate 6a or directly. Because the light source 4 is positioned away from the light-emitting region 3b, the light emitted by the light source 4 and the light reflected from the first exit surface 6b are prevented from directly entering the user's field of vision. The light within the light guide plate 6a is reflected by the second exit surface 6c on the back side of the light-emitting region 3b. The light reflected from the second exit surface 6c enters the light-emitting region 3b of the mirror plate 3 via the diffusion sheet 7.
[0027] 6, light passing through the diffusion sheet 7 is diffused by the uneven surface 7b. Specifically, the light reflected from the second light exit surface 6c of the light guide plate 6a is refracted and reflected by the uneven shape of the uneven surface 7b, and is diffused uniformly in multiple directions. As a result, the pattern of the reflected light from the second light exit surface 6c is hidden from the user's perspective, and light is emitted with uniform brightness.
[0028] 6 and 8, the light diffused by the uneven surface 7b passes through the smooth surface 7a and enters the light-emitting area 3b from the rear surface of the mirror plate 3. Because the smooth surface 7a and the rear surface of the mirror plate 3 are in close contact with each other and there is no or almost no air gap, the diffused light is not polarized and is emitted at a suitable angle from the surface of the light-emitting area 3b. This allows the light-emitting area 3b to function as an illumination device.
[0029] As described above, the vehicle sun visor 1 includes a plate-shaped visor body 10 and a light source 4 provided within the visor body 10, as shown in FIG. 2. The mirror unit 2 includes a light guide plate 6a disposed on the front side of the light source 4, through which light from the light source 4 can pass, as shown in FIGS. 4 and 8. One of the end faces of the light guide plate 6a is a first light exit surface 6b that reflects light entering the light guide plate 6a from the rear surface of the light guide plate 6a along the light guide plate 6a. The rear surface of the light guide plate 6a is formed with a second light exit surface 6c that reflects light passing along the light guide plate 6a toward the front side (see FIG. 8). A mirror plate 3 is provided juxtaposed to the front side of the light guide plate 6a. The mirror plate 3 includes a mirror region 3a that covers the light source 4 and the first light exit surface 6b of the light guide plate 6a from the front side. A reflective film 8 that forms a mirror is attached to the rear surface of the mirror region 3a of the mirror plate 3. The mirror plate 3 has a light-emitting region 3b that covers the second light-emitting surface of the light guide plate 6a from the front side. A diffusion member (e.g., a diffusion sheet 7) is in direct contact with the back surface 3d of the light-emitting region 3b of the mirror plate 3, and the diffusion member (diffusion sheet 7) diffuses the light from the light guide plate 6a toward the front side.
[0030] Therefore, the light guide plate 6a and the mirror plate 3 are stacked in the thickness direction. This allows for a mirror and light-emitting structure to be constructed in a relatively thin structure. The diffusion member (diffusion sheet 7) is in direct contact with the back surface of the mirror plate 3. Therefore, no gap is formed between the diffusion member (diffusion sheet 7) and the mirror plate 3. As a result, light passing through the diffusion member (diffusion sheet 7) is not blocked or polarized by air or dust trapped in the gap. As a result, light emitted from the light-emitting region 3b of the mirror plate 3 is diffused toward the user at a suitable angle. The light source 4 and the first exit surface 6b of the light guide plate 6a are covered with a reflective film 8. This prevents the light source 4 and the first exit surface 6b of the light guide plate 6a from directly entering the user's field of vision. This prevents the user from experiencing glare.
[0031] As shown in FIG. 6 , the diffusing member (e.g., the diffusion sheet 7) has a smooth surface (e.g., the smooth surface 7a) that directly contacts the back surface of the mirror plate 3, and a back surface (e.g., the uneven surface 7b) that has an uneven shape to diffuse light. Therefore, when the smooth surface (smooth surface 7a) of the diffusing member (diffusion sheet 7) is closely attached to the back surface of the mirror plate 3, the contact area between the mirror plate 3 and the diffusing member (diffusion sheet 7) is increased. This more reliably prevents gaps from forming at the contact surface between the mirror plate 3 and the diffusing member (diffusion sheet 7). Therefore, light emitted from the light-emitting region 3b of the mirror plate 3 is diffused toward the user at a suitable angle. Furthermore, the strength of the intimate contact between the mirror plate 3 and the diffusing member (diffusion sheet 7) can be improved.
[0032] 6, the diffusing member (e.g., the diffusion sheet 7) is directly and closely attached to the rear surface of the mirror plate 3 by adhesive. Therefore, the mirror plate 3 and the diffusing member (diffusion sheet 7) are in close contact with each other at their contact surfaces. This makes it possible to configure the diffusing member (diffusion sheet 7) to be less likely to peel off from the mirror plate 3.
[0033] 7 and 8, the reflector 6 and the light guide plate 6a are inclined at the same angle on the end surface of the unit base 5 toward the center, thereby forming a first light exit surface 6b (see FIG. 8). Furthermore, the first light exit surface 6b is positioned so as to overlap with the light beam from the light source 4. Therefore, the light source 4 can be hidden from the user's view, while the light emitted by the light source 4 can be incident on the light guide plate 6a.
[0034] As shown in Figure 7, the mirror unit 2 has the mirror plate 3 and the substrate 5b arranged so that their respective planes are parallel to one another. This configuration allows the mirror plate 3 and the substrate 5b to be positioned independently of the thickness of the visor body 10. Furthermore, the mounting surface of the substrate can be widely used. This allows electronic components other than the light source 4 to be mounted on a single substrate, and also reduces the number of components and assembly steps, thereby reducing costs.
[0035] The present disclosure is not limited to the appearance and configuration described in the above-described embodiment, and various modifications, additions, and deletions are possible within the scope that does not change the gist of the present disclosure.
[0036] For example, as shown in Figures 11 and 12, the diffusing member may be formed by a textured surface on the back surface 3d of the light-emitting region of the mirror plate 3. Specifically, the textured surface is formed by mechanically grinding the reflective film on both left and right ends of the mirror plate 3 (see Figure 12). The textured surface may be formed, for example, by laser processing, into a striped, grid, or grained pattern. Shot peening may also be used to form partial depressions. In other words, the diffusing member (the textured surface on the back surface 3d of the light-emitting region) is not a separate component from the mirror plate 3, but is formed on the mirror plate 3 itself. This reduces the number of components in the vehicle sun visor 1. Furthermore, because the diffusing member (the textured surface on the back surface 3d of the light-emitting region) is formed on the mirror plate 3 itself, no gap is formed between the mirror plate 3 and the diffusing member (the textured surface on the back surface 3d of the light-emitting region).
[0037] The mirror plate 3 shown in FIG. 11 may also have a configuration including a second diffusing member (e.g., a diffusing sheet 7) that directly contacts the rear surface of the diffusing member (the uneven surface of the rear surface 3d of the light-emitting region). The front and rear surfaces of the second diffusing member (diffusing sheet 7) are both smooth. A flat colored member (e.g., a milky white material) containing a colorant is printed on the rear surface of the second diffusing member (diffusing sheet 7). Therefore, light from the light guide plate 6a is colored by passing through the colored member. This allows the color of light emitted from the light-emitting region 3b of the mirror plate 3 to be freely set. The colored member is located upstream of the second diffusing member (diffusing sheet 7). Therefore, the colored member can be made relatively small. For example, if a colored member is located downstream of the second diffusing member (diffusing sheet 7), the colored member must be enlarged to account for the light diffusion. Compared to this structure, the colored member can be made relatively small. Instead of being printed, the colored member may be attached in sheet form.
[0038] As shown in Fig. 6, the second diffusing member (diffusing sheet 7) may have a smooth front surface 7a that contacts the diffusing member (diffusing sheet 7) and a back surface 7b that has an uneven surface to diffuse light. Light from the light guide plate 6a is diffused by the second diffusing member (diffusing sheet 7). The light emitted from the second diffusing member (diffusing sheet 7) is further diffused by the uneven surface formed on the back surface 3d of the light-emitting area. As a result, the light emitted from the light-emitting area 3b of the mirror plate 3 is diffused toward the user at a wider angle.
[0039] In the mirror plate 3 shown in Fig. 11, the uneven shape of the back surface 3d of the light-emitting region functions as a diffusing member. In this way, when the back surface of the mirror plate 3 is mechanically processed, a configuration is possible in which a second diffusing member (diffusing sheet 7) is not attached to the back surface 3d of the light-emitting region. Alternatively, a configuration may be adopted in which a flat colored member containing a coloring material (e.g., a material of milky white, orange, etc.) is printed on the uneven shape of the back surface 3d of the light-emitting region. The colored member may also be attached in the form of a sheet.
[0040] A planar colored member (e.g., a milky white, orange, or other material) containing a coloring agent may be provided on the back surface of the diffusion sheet 7, 30 shown in Figures 6 and 9. Light from the light guide plate 6a is colored by passing through the colored member. This allows the color of light emitted from the light-emitting region 3b of the mirror plate 3 to be set as desired. The colored member is located upstream of the diffusion sheet 7, 30. This allows the colored member to be made relatively small. The colored member can be attached by any method, such as by printing or by adhering it in sheet form.
[0041] The diffusion sheet 7 shown in Fig. 6 has its smooth surface 7a attached to the mirror plate 3 and its uneven surface 7b facing away from the mirror plate 3. Alternatively, a diffusion sheet 30 shown in Fig. 9 may be provided. The diffusion sheet 30 has its uneven surface 30b adhered to the back surface 3d of the light-emitting region 3b of the mirror plate 3. The smooth surface 30a faces away from the mirror plate 3. Alternatively, a diffusion sheet 31 shown in Fig. 10 may be provided. The diffusion sheet 31 is made of a material 31a containing a light-reflecting substance such as glass beads.
[0042] The diffusion sheet 7 shown in Fig. 6 is attached to the mirror plate 3 with an adhesive or adhesive tape. Alternatively, the diffusion member may be printed on the mirror plate 3 by inkjet printing or screen printing. This makes it difficult for the diffusion member to peel off from the mirror plate 3. The diffusion member may be a sheet-like member alone, or may be thinly printed on the back surface of the mirror plate 3.
[0043] The mirror shown in Fig. 3 is a half mirror, and includes a mirror plate 3 made of a light-transmitting material and a reflective film 8 that reflects light (see Fig. 5). Alternatively, a normal mirror may be provided in the mirror area 3a. The mirror plate 3 shown in Fig. 3 may be made of glass, or may be made of a material that allows light to pass through, such as acrylic resin. The reflective film 8 shown in Fig. 5 is a silver film printed on the mirror plate 3. Instead of the silver film, aluminum may be attached to the mirror plate 3 by vapor deposition or the like.
[0044] The visor body 10 shown in Fig. 2 is configured to have two shells. Alternatively, the visor body 10 may be formed in one piece from foam beads or the like.
[0045] The light source 4 shown in Fig. 4 is an LED. Alternatively, other types of light sources may be used as the light source 4. The number and arrangement of the light sources 4 may be changed as appropriate. The light guide plate 6a shown in Fig. 4 is made of an acrylic resin. Alternatively, the light guide plate 6a may be made of other materials such as polycarbonate or glass.
[0046] The first light exit surface 6b shown in Fig. 8 is inclined so that the plane faces the base 5a. This inclination angle can be set arbitrarily. The first light exit surface 6b has a planar cross-sectional shape with a straight line. Alternatively, the first light exit surface 6b may be formed in a curved or bent shape.
[0047] 8, a second light exit surface 6c is formed on the rear surface thereof. The second light exit surface 6c can be formed by various methods, such as printing a dot pattern or cutting a groove.
[0048] DESCRIPTION OF SYMBOLS 1 Vehicle sun visor 2 Mirror unit 2a Mirror frame 2b Cover 3 Mirror plate 3a Mirror area 3b Light-emitting area 3d Back surface of light-emitting area 4 Light source 5 Unit base 5a Base 5b Substrate 5c Switch 6 Reflector 6a Light guide plate 6b First light-emitting surface 6c Second light-emitting surface 7 Diffusion sheet (diffusion member) 7a Smooth surface (surface of diffusion member) 7b Textured surface (back surface of diffusion member) 8 Reflection film 10 Visor body