Automobile sun shield

Abstract

The automobile sun shield comprises a shell assembly, mirror glass and a light-emitting assembly, and the shell assembly is provided with a mounting part; the mirror glass is mounted on the mounting part and is provided with a light-transmitting area; the light-emitting assembly is attached to the rear end face of the mirror glass, and the light-emitting assembly and the light-transmitting area are arranged in a front-back corresponding mode. The light-emitting assembly comprises a light guide plate, a lamp bead and a diffusion film, the lamp bead is electrically connected with a control circuit board in the shell assembly, and the diffusion film is attached to the upper surface, right facing the mirror glass light-transmitting area, of the light guide plate. The diffusion film comprises a light shading face and a light emitting face, the light emitting face corresponds to the light transmitting area, and the light shading face is used for preventing part of light directly scattered by the lamp beads. Through cooperation of the light guide plate and the diffusion film, uniform diffuse reflection of light can be achieved, the overall lighting effect of the light-emitting assembly is improved, the overall brightness uniformity is improved, and the use experience and the use effect of a user are improved.

Description

Technical Field

[0001] This application relates to the field of automotive parts manufacturing technology, specifically an automotive sun visor. Background Technology

[0002] Car sun visors are an indispensable part of cars. For cars with various functions, sun visors are usually provided to avoid direct exposure of the driver and passengers to strong light such as sunlight and headlights. Depending on the function and layout of the sun visor, it is usually equipped with a flip-up or sliding vanity mirror. Vanity mirrors are basically equipped with light-emitting components (lights) to illuminate the user.

[0003] For sun visors equipped with flip-up vanity mirrors and built-in lights, if the light-emitting components on the car sun visor are unobstructed, the light will diffuse outwards in a circular pattern from the center of the light source. This uneven distribution of light results in a significant decrease in light intensity and brightness in areas farther from the light source. Because the light radiates outwards from a point or small area of ​​light source, the light intensity is highest in the central area and gradually decreases outwards, creating a gradient effect from strong to weak, which reduces the user's visual experience and usability. Summary of the Invention

[0004] The purpose of this application is to provide a car sun visor to solve the problem mentioned in the background art where the light from the car sun visor diffuses outward in a circular shape from the center of the light source, resulting in a significant decrease in light intensity and brightness in areas farther from the light source, thus affecting the user experience.

[0005] To achieve the above objectives, this application provides the following technical solution: a car sun visor, comprising: The housing assembly is equipped with a mounting section; The mirror glass is installed in the mounting section and has a light-transmitting area; The light-emitting component is attached to the rear end face of the mirror glass and is positioned in a front-to-back correspondence with the light-transmitting area; The light-emitting component includes a light guide plate, LED beads, and a diffusion film. The LED beads are electrically connected to the control circuit board inside the housing assembly, and the diffusion film is attached to the upper surface of the light guide plate facing the light-transmitting area of ​​the mirror glass. The diffusion film includes a light-shielding surface and a light-emitting surface. The light-emitting surface is arranged corresponding to the light-transmitting area, and the light-shielding surface is used to prevent some of the light directly scattered by the lamp beads.

[0006] Compared to existing technologies, this invention utilizes a diffusion film, which includes a light-shielding surface and a light-emitting surface. The light-shielding surface blocks some of the light directly scattered by the LED chips, preventing glare or uneven light diffusion caused by direct light exposure. The light guide plate, employing the principle of diffuse reflection, evenly diffuses the blocked light and the light scattered by the LED chips to the light-emitting surface, ensuring that the light is evenly and softly distributed as it passes through the light-transmitting area of ​​the mirror glass. This achieves uniform light distribution and soft diffusion. The combination of the light guide plate and the diffusion film enables uniform diffuse reflection of light, improving the overall lighting effect of the light-emitting components, enhancing overall brightness uniformity, and improving the user experience and overall performance.

[0007] Preferably, the light-emitting component further includes a lamp housing and a reflective film. The lamp housing is connected to the mounting part, and the reflective film is disposed on the side of the light guide plate away from the diffusion film. The light guide plate and the lamp beads are both installed inside the lamp housing. The reflective film is used to reflect the light leaking through the light guide plate back to the light-emitting surface.

[0008] In this embodiment, the reflective film is used to reflect the light leaking through the edge or back of the light guide plate back to the light-emitting surface, so that the reflected light can be evenly distributed after being scattered by the light guide plate and the diffuser film, thereby reducing light loss, improving light utilization, and reducing light energy waste.

[0009] Preferably, the lower surface of the light guide plate is provided with a reflective part, which is used to uniformly scatter the light generated by the lamp beads to the light emitting surface through diffuse reflection; The reflective part consists of multiple spaced protrusions.

[0010] In this embodiment, by providing a reflective part, the reflective part can increase the number of multiple scatterings of light and improve the diffusion angle of light. At the same time, when light is diffusely reflected, it can avoid the generation of light spots and dark areas, so that the light-emitting surface of the light guide plate can present a more uniform, softer, and stripe-free lighting effect.

[0011] Preferably, both the light-emitting surface and the light-shielding surface have light-shielding adhesive on their outer peripheral edges.

[0012] In this embodiment, the light-shielding adhesive wraps around the outer periphery of both the light-emitting surface and the light-shielding surface, which can effectively block light from scattering out from the edge of the light guide plate and prevent light from scattering out from the side of the light guide plate. This ensures that light is mainly emitted uniformly from the light-emitting surface to the light-transmitting area, thereby improving the utilization rate of light.

[0013] Preferably, in the horizontal direction, the total width of the diffusion film is W1, the width of the light-shielding surface is W2, the width of the light-emitting surface is W3, and the width of the light-shielding adhesive is W4; The width of the light-shielding surface is 36% to 42% of the total width of the diffusion film, the width of the light-emitting surface is 52% to 56% of the total width of the diffusion film, and the width of the light-shielding adhesive is 3% to 4% of the total width of the diffusion film.

[0014] In this embodiment, by reasonably setting the proportional relationship between the three, sufficient light-blocking area can be ensured to ensure uniform light emission, while avoiding insufficient overall brightness due to excessive light-blocking area, thus improving the user's visual experience.

[0015] Preferably, the thickness of the light guide plate is in the range of 2mm to 3mm.

[0016] In this embodiment, a thinner light guide plate can reduce the scattering loss of light during propagation, which helps to improve the uniform distribution of light and light transmission efficiency. It is also easy to install in the space of the car sun visor, improving installation flexibility and layout compactness, and reducing manufacturing costs.

[0017] Preferably, the area of ​​the diffusion film is larger than the area of ​​the light guide plate.

[0018] In this embodiment, the area of ​​the diffusion film is larger than the area of ​​the light guide plate, ensuring that the diffusion film can completely cover the edge area of ​​the light guide plate, preventing light from leaking out from the edge of the light guide plate, and better controlling the light reflected in the light guide plate, thereby improving the uniformity of light and the luminous effect.

[0019] Preferably, the lamp housing is provided with a mounting groove and a lamp slot for fixing the lamp beads, the light guide plate is installed in the mounting groove, and the lamp slot is located on the side of the light-shielding surface away from the light-emitting surface.

[0020] In this embodiment, by setting a lamp housing, it is possible to prevent the light reflected from the lamp beads from damaging other components inside the housing assembly, thus providing a certain degree of protection for the light-emitting component and extending its service life. At the same time, the lamp housing can replace the traditional black-edge light-shielding design, directly covering or blocking the edge of the light guide plate, thereby effectively preventing light from leaking out from the edge and ensuring that the light is concentrated and evenly scattered from the light-emitting surface to the light-transmitting area.

[0021] Preferably, the two inner sidewalls of the lamp housing in the short side direction are provided with a first groove and a first protrusion, and the light guide plate is provided with a second protrusion and a second groove respectively corresponding to the first groove and the first protrusion. The first groove and the second protrusion cooperate, and the first protrusion and the second groove cooperate to realize the snap-fit ​​between the lamp housing and the light guide plate.

[0022] In this embodiment, the snap-fit ​​connection method facilitates the disassembly and installation of the light guide plate, allowing users to adjust and replace it according to actual needs. The operation is simple, saves time, and improves assembly efficiency.

[0023] Preferably, the housing assembly includes a hollow mirror frame for mounting mirror glass, and the mirror frame is detachably connected to the mounting part; The inner wall of the mirror frame is provided with at least two buckles, and the outer wall of the lamp housing is provided with at least two slots. The buckles and slots cooperate to achieve the snap-fit ​​connection between the light-emitting component and the housing component.

[0024] In this embodiment, the snap-fit ​​connection method facilitates the disassembly and installation of the light-emitting component. When it is necessary to replace or maintain the light-emitting component, the user only needs to gently disassemble the light-emitting component to separate the two. This allows the user to adjust and replace the component according to their actual needs, making the operation simple, saving time and improving assembly efficiency. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of an automobile sun visor provided in an embodiment of this application; Figure 2 An exploded structural diagram of a car sun visor provided in an embodiment of this application; Figure 3 An exploded view of the light-emitting component in an automotive sun visor provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the lamp housing in an automotive sun visor provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the mirror frame in an automobile sun visor provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the mirror cover in a car sun visor provided in one embodiment of this application.

[0026] In the diagram: 1. Housing assembly; 2. Mirror glass; 3. Light-emitting component; 11. Mounting section; 12. Mirror frame; 13. Mirror cover; 14. Shaft; 15. Front cover; 16. Rear cover; 17. Sun visor frame; 21. Light transmission area; 31. Light guide plate; 32. Lamp bead; 33. Diffuser film; 34. Lamp housing; 35. Reflective film; 121. Buckle; 122. Fixing part; 131. Snap-on part; 311. Second groove; 312. Second protrusion; 331. Light-shielding surface; 332. Light-emitting surface; 333. Light-shielding adhesive; 341. Slot; 342. Lamp slot; 343. Mounting slot; 344. First groove; 345. First protrusion; 1311. Through hole. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0028] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0029] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0030] The present application will now be described in further detail with reference to the accompanying drawings, see below. Figures 1 to 6 illustrate.

[0031] This embodiment provides a car sun visor, which is applied in the field of automotive parts manufacturing technology. Specifically, for example... Figures 1 to 6 As shown, the system includes a housing assembly 1, a mirror glass 2, and a light-emitting component 3. The housing assembly 1 has a mounting part 11, which is a recessed structure and is recessed towards the center of the housing assembly 1. The mirror glass 2 is mounted on the mounting part 11 and has a light-transmitting area 21. The light-emitting component 3 is attached to the rear end face of the mirror glass 2 and is mounted on the mounting part 11. The light-emitting component 3 and the light-transmitting area 21 are arranged in a front-to-back correspondence, which can scatter the light from the light-emitting component 3 to provide illumination for the user when looking in the mirror. The light-emitting component 3 includes a light guide plate 31, LED beads 32, and a diffusion film 33. The light guide plate 31 is a transparent structure. The LED beads 32 are LED light boards and are electrically connected to the control circuit board inside the housing assembly 1. The diffusion film 33 is attached to the upper surface of the light guide plate 31 facing the light-transmitting area 21 of the mirror glass 2, and the diffusion film 33 is bonded to the surface of the light guide plate 31.

[0032] Among them, such as Figure 3As shown, the diffusion film 33 includes a light-shielding surface 331 and a light-emitting surface 332. The light-emitting surface 332 is correspondingly arranged with the light-transmitting area 21. The LED bead 32 is arranged on the side of the light-shielding surface 331 away from the light-emitting surface 332. The LED bead 32 is located below the light-shielding surface 331 and at one end of the light guide plate 31. The light-shielding surface 331 is used to block some of the light directly scattered by the LED bead 32, preventing direct light irradiation from causing glare or uneven diffusion. The light-emitting surface 332 is used to evenly scatter the light transmitted by the light guide plate 31. The light guide plate 31 uses the principle of diffuse reflection to evenly scatter the blocked light to the light-emitting surface 332, ensuring that the light can be evenly and softly distributed when passing through the light-transmitting area 21 of the mirror glass 2, thereby achieving uniform light distribution and soft diffusion, improving the overall lighting effect of the light-emitting component 3, enhancing the overall brightness uniformity, and improving the user experience and effect.

[0033] Furthermore, the light-emitting component 3 also includes a lamp housing 34 and a reflective film 35. The lamp housing 34 is connected to the mounting part 11. The reflective film 35 is disposed on the side of the light guide plate 31 away from the diffuser film 33. The light guide plate 31 and the lamp beads 32 are both installed inside the lamp housing 34. The reflective film 35 is used to reflect the light leaking through the edge or back of the light guide plate 31 back to the light-emitting surface 332, so that the reflected light can be evenly distributed after being scattered by the light guide plate 31 and the diffuser film 33, reducing light loss, improving light utilization, and reducing light energy waste.

[0034] Among them, such as Figure 3 , Figure 4 As shown, the lamp housing 34 is provided with a mounting groove 343 and a lamp groove 342 for fixing the lamp beads 32. The light guide plate 31 is installed in the mounting groove 343. The size of the mounting groove 343 is adapted to the size of the light guide plate 31. The size of the lamp groove 342 is adapted to the size of the lamp beads 32. The lamp beads 32 are snapped into the lamp groove 342. In the vertical direction, the highest point of the light guide plate 31 is lower than the highest point of the mounting groove 343. The lamp groove 342 is located on the side of the light shielding surface 331 away from the light emitting surface 332, which can ensure that the light emitted by the lamp beads 32 is effectively blocked by the light shielding surface 331 and prevent light leakage. By setting the lamp housing 34, the light reflected from the lamp bead 32 when it emits light can be prevented from damaging other components inside the housing assembly 1, thus providing a certain degree of protection for the light-emitting assembly 3 and extending its service life. At the same time, the lamp housing 34 can replace the traditional black edge light-shielding design, directly covering or blocking the edge of the light guide plate 31, thereby effectively preventing light from leaking out from the edge and ensuring that the light is concentrated and evenly scattered from the light-emitting surface 332 to the light-transmitting area 21.

[0035] The lamp housing 34 has a first groove 344 and a first protrusion 345 on both inner sidewalls along its short side. The light guide plate 31 has a second protrusion 312 and a second groove 311 corresponding to the first groove 344 and the first protrusion 345, respectively. The first groove 344 and the second protrusion 312 cooperate, and the first protrusion 345 and the second groove 311 cooperate to realize the snap-fit ​​connection between the lamp housing 34 and the light guide plate 31. The snap-fit ​​connection method can facilitate the disassembly and installation of the light guide plate 31, and make it easy for users to adjust and replace according to actual needs. The operation is simple, saves time and improves assembly efficiency.

[0036] Furthermore, the lower surface of the light guide plate 31 is provided with a reflective part, which is used to diffusely scatter the light generated by the lamp bead 32 to the light emitting surface 332. The reflective part consists of multiple spaced protrusions with a semi-circular structure, which can increase the number of times the light is scattered and improve the diffusion angle of the light. At the same time, when the light is diffusely reflected, it can avoid the generation of light spots and dark areas, so that the light emitting surface 332 of the light guide plate 31 can present a more uniform, softer, and stripe-free lighting effect. When the user observes from various angles, the visual effect of the light is basically the same and there is no obvious difference, which improves the user experience and the effect of use.

[0037] The thickness of the light guide plate 31 ranges from 2mm to 3mm, preferably 2.4mm. A thinner light guide plate 31 can reduce the scattering loss of light during propagation, which helps to improve the uniform distribution of light and light transmission efficiency. It is also easy to install in the space of the car sun visor, improving installation flexibility and layout compactness, and reducing manufacturing costs.

[0038] Furthermore, such as Figure 3 As shown, both the light-emitting surface 332 and the light-shielding surface 331 are provided with light-shielding adhesive 333 on their outer periphery. The light-shielding adhesive 333 is black and white adhesive. The light-shielding adhesive 333 wraps the outer periphery of both the light-emitting surface 332 and the light-shielding surface 331, which can effectively block light from scattering out from the edge of the light guide plate 31 and prevent light from scattering out from the side of the light guide plate 31. This ensures that the light is mainly emitted evenly from the light-emitting surface 332 to the light-transmitting area 21, thereby improving the utilization rate of light.

[0039] Among them, such as Figure 3As shown, in the horizontal direction, the total width of the diffusion film 33 is W1, the width of the light-shielding surface 331 is W2, the width of the light-emitting surface 332 is W3, and the width of the light-shielding adhesive 333 is W4. Specifically, the width of the light-shielding surface 331 is 36% to 42% of the total width of the diffusion film 33, the width of the light-emitting surface 332 is 52% to 56% of the total width of the diffusion film 33, and the width of the light-shielding adhesive 333 is 3% to 4% of the total width of the diffusion film 33. This means that the width of the light-shielding surface 331 is 36% to 42% of the total width of the diffusion film 33, the width of the light-emitting surface 332 is 52% to 56% of the total width of the diffusion film 33, and the width of the light-shielding adhesive 333 is 3% to 4% of the total width of the diffusion film 33. For example, when the total width of the diffusion film 33 is 35 mm, the width of the light-shielding surface 331 is 12.6 mm to 14.7 mm, preferably 13.75 mm; the width of the light-emitting surface 332 is 18.2 mm to 19.6 mm, preferably 18.75 mm; and the width of the light-shielding adhesive 333 is 1.05 mm to 1.4 mm, preferably 1.25 mm. By reasonably setting the proportional relationship between the three, sufficient light-shielding area can be ensured, ensuring uniform light emission, while avoiding insufficient overall brightness due to excessive light-shielding area, thus improving the user's visual experience.

[0040] The area of ​​the diffusion film 33 is larger than that of the light guide plate 31, ensuring that the diffusion film 33 can completely cover the edge area of ​​the light guide plate 31, preventing light from leaking out from the edge of the light guide plate 31, and better controlling the light reflected in the light guide plate 31, thereby improving the uniformity of light and the luminous effect.

[0041] Among them, such as Figure 4 , Figure 5 As shown, the housing assembly 1 includes a hollow mirror frame 12 for mounting the mirror glass 2. The mirror frame 12 is detachably connected to the mounting part 11. The size of the mirror frame 12 is adapted to the size of the mounting part 11, and the size of the mirror glass 2 is adapted to the size of the mirror frame 12. The mirror frame 12 has a rectangular structure. The inner side wall of the mirror frame 12 is provided with at least two buckles 121, and the outer side wall of the lamp housing 34 is provided with at least two slots 341. The two slots 341 are respectively located on both sides of the short side of the lamp housing 34. The buckles 121 and the slots 341 cooperate to realize the snap-fit ​​connection between the light-emitting component 3 and the housing assembly 1. The snap-fit ​​connection method can facilitate the disassembly and installation of the light-emitting component 3. When it is necessary to replace or maintain the light-emitting component 3, the user only needs to gently disassemble the light-emitting component 3 to separate the two. This makes it easy for the user to adjust and replace according to their actual needs. The operation is simple, saves time, and improves assembly efficiency.

[0042] Furthermore, such as Figure 6As shown, the housing assembly 1 also includes a front cover 15, a rear cover 16, and a sun visor frame 17 disposed between the two. One side of the sun visor frame 17 is connected to the front cover 15, and the other side of the sun visor frame 17 is connected to the rear cover 16. The mounting part 11 is disposed on the front cover 15 and is recessed toward the sun visor frame 17. The housing assembly 1 also includes a mirror cover 13 and at least two shafts 14. A mirror glass 2 is located between the mirror cover 13 and the light-emitting component 3. The mirror cover 13 has at least two spaced-apart fastening portions 131 on the side facing the mirror frame 12. Each fastening portion 131 has a through hole 1311 for the shaft 14 to pass through. The mirror frame 12 has multiple spaced-apart fixing portions 122 on the side facing the sun visor frame 17. Each fixing portion 122 has a fastening portion 131 between two adjacent fixing portions 122, and each fixing portion 122 has a through hole 1311 for the shaft 14 to pass through. 4. Through-holes; each shaft 14 is at least partially located in the through-hole 1311 of a snap-fit ​​part 131, and the shaft 14 is at least partially located in the insertion holes of two adjacent fixing parts 122 of the snap-fit ​​part 131, so that the mirror cover 13 can rotate relative to the housing assembly 1 about the shaft 14. By providing the mirror cover 13, the mirror cover 13 can protect the mirror glass 2. When the user does not need to use it, the mirror cover 13 can cover the mirror glass 2 to protect the mirror glass 2 and prevent external substances from damaging it. When the user needs to use the mirror glass 2, the mirror cover 13 can be flipped open, which is convenient to operate and improves the user experience and comfort.

[0043] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The descriptions of the embodiments above are only for the purpose of helping to understand the present application and its core ideas. It should be noted that those skilled in the art can make several improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A car sun visor, characterized in that, include: The housing assembly (1) is provided with a mounting part (11); A mirror glass (2) is installed in the mounting part (11) and has a light-transmitting area (21). The light-emitting component (3) is attached to the rear end face of the mirror glass (2) and is arranged in a front-to-back correspondence with the light-transmitting area (21); The light-emitting component (3) includes a light guide plate (31), an LED bead (32) and a diffusion film (33). The LED bead (32) is electrically connected to the control circuit board inside the housing assembly (1). The diffusion film (33) is attached to the upper surface of the light guide plate (31) facing the light-transmitting area (21) of the mirror glass (2). The diffusion film (33) includes a light-shielding surface (331) and a light-emitting surface (332). The light-emitting surface (332) is arranged corresponding to the light-transmitting area (21). The light-shielding surface (331) is used to block some of the light directly scattered by the lamp beads (32).

2. The car sun visor according to claim 1, characterized in that, The light-emitting component (3) also includes a lamp housing (34) and a reflective film (35). The lamp housing (34) is connected to the mounting part (11). The reflective film (35) is disposed on the side of the light guide plate (31) away from the diffusion film (33). The light guide plate (31) and the lamp beads (32) are both installed inside the lamp housing (34). The reflective film (35) is used to reflect the light leaking through the light guide plate (31) back to the light-emitting surface (332).

3. The car sun visor according to claim 1, characterized in that, The lower surface of the light guide plate (31) is provided with a reflective part, which is used to uniformly scatter the light generated by the lamp bead (32) to the light-emitting surface (332) through diffuse reflection. The reflective part consists of multiple spaced protrusions.

4. The car sun visor according to claim 1, characterized in that, The outer edges of the light-emitting surface (332) and the light-shielding surface (331) are provided with light-shielding adhesive (333).

5. The car sun visor according to claim 4, characterized in that, In the horizontal direction, the total width of the diffusion film (33) is W1, the width of the light-shielding surface (331) is W2, the width of the light-emitting surface (332) is W3, and the width of the light-shielding adhesive (333) is W4. The width of the light-shielding surface (331) is 36% to 42% of the total width of the diffusion film (33), the width of the light-emitting surface (332) is 52% to 56% of the total width of the diffusion film (33), and the width of the light-shielding adhesive (333) is 3% to 4% of the total width of the diffusion film (33).

6. The car sun visor according to claim 1, characterized in that, The thickness of the light guide plate (31) ranges from 2 mm to 3 mm.

7. The car sun visor according to claim 1, characterized in that, The area of ​​the diffusion film (33) is larger than the area of ​​the light guide plate (31).

8. The car sun visor according to claim 2, characterized in that, The lamp housing (34) is provided with an installation groove (343) and a lamp groove (342) for fixing the lamp beads (32). The light guide plate (31) is installed in the installation groove (343), and the lamp groove (342) is located on the side of the light-shielding surface (331) away from the light-emitting surface (332).

9. The car sun visor according to claim 2, characterized in that, The lamp housing (34) has a first groove (344) and a first protrusion (345) on both inner sidewalls in the short side direction. The light guide plate (31) has a second protrusion (312) and a second groove (311) corresponding to the first groove (344) and the first protrusion (345). The first groove (344) cooperates with the second protrusion (312), and the first protrusion (345) and the second groove (311) cooperate to realize the snap-fit ​​between the lamp housing (34) and the light guide plate (31).

10. The car sun visor according to claim 2, characterized in that, The housing assembly (1) includes a hollow mirror frame (12) for mounting mirror glass (2), and the mirror frame (12) is detachably connected to the mounting part (11). The inner wall of the mirror frame (12) is provided with at least two buckles (121), and the outer wall of the lamp housing (34) is provided with at least two slots (341). The buckles (121) cooperate with the slots (341) to realize the snap-fit ​​between the light-emitting component (3) and the housing component (1).

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