Sun visor and vehicle

By integrating projection devices, electrochromic glass and sensors on the vehicle sun visor, the problem of single function of the sun visor is solved, and the entertainment projection and makeup mirror functions are realized when the vehicle is stopped, improving user experience and saving costs.

WO2025138994A1PCT designated stage expired Publication Date: 2025-07-03BYD CO LTD
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Patent Information

Application Number
PCT/CN2024/116244
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-12-29
Filing Date
2024-09-02
Publication Date
2025-07-03

AI Technical Summary

Technical Problem

Existing vehicle visors have a relatively single function and cannot provide additional entertainment or practical functions in low sunlight.

Method used

A projection device is set up on the sun visor, and electrochromic glass and diffraction light waveguide technology are used to project entertainment information such as videos and movies, and a sensor is used to adjust the light intensity and the controller is used to adjust the transparency to meet the user's entertainment needs.

Benefits of technology

Provides a large-size entertainment projection experience, avoids dizziness, simplifies structure and reduces costs, while achieving versatile utilization of sun visors.

✦ Generated by Eureka AI based on patent content.

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    Figure CN2024116244_03072025_PF_FP_ABST
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Abstract

A sun visor (11), comprising: a sun visor body (111) and a projection device (112). The projection device (112) is disposed on the sun visor (11). Also disclosed is a vehicle (10). When the vehicle (10) is in a stationary state, images are inputted into the projection device (112) so that the projection device (112) can project entertainment information such as videos and movies into the eyes of a user by means of the sun visor (11), and the sun visor (11) is fully utilized.
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Description

Sun visor and vehicle

[0001] Priority information

[0002] This application claims priority and benefits of the patent application with patent application number "202311866144.0" filed with the State Intellectual Property Office of China on December 29, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of vehicle accessories, and more particularly, to a sun visor and a vehicle. Background Art

[0004] In the prior art, sun visors are installed above the driver's seat and the passenger seat of a vehicle to fold down to block sunlight when the sun is strong. Lenses can also be installed on the sun visors to serve as makeup mirrors. However, in weak sunlight or when the vehicle is stopped, the sun visors cannot serve other purposes after being used as makeup mirrors. Therefore, the existing sun visors have relatively limited functions and cannot be fully utilized.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a sun visor and a vehicle, which can solve the problem that the sun visor in a vehicle has a relatively single function, resulting in an inability to fully utilize the sun visor.

[0007] The sun visor of the embodiment of the present application is used for a vehicle. The sun visor comprises a sun visor body and a projection device. The projection device is arranged on the sun visor body.

[0008] In this way, by arranging a projection device on the sun visor, when the vehicle is in a stopped state, by adjusting the electrochromic glass to a transparent state, entertainment information such as videos and movies can be projected through the sun visor body to provide users with travel entertainment, thereby solving the problem of the single function of the sun visor and making full use of the sun visor.

[0009] In some embodiments, the projection device is used to project an image onto a predetermined location within the passenger compartment of the vehicle.

[0010] In this way, by projecting the image projected by the projection device directly onto the user's eyeballs, the virtual image distance of the projected image can be made greater than 10 meters, which can provide a large-size picture and enhance the entertainment experience. In addition, it can also avoid the situation where the sun visor is too close to the user and the image is directly formed on the sun visor. The viewing distance is too close, and long-term use will cause dizziness and other discomfort.

[0011] In some embodiments, the distance between the virtual image formed by the projection device and the predetermined position is greater than 10 meters.

[0012] In this way, the virtual image projected by the projection device is 10 meters away from the user's eyeballs, allowing the user to watch the image from a distance, so that the user will not feel dizzy when watching the image for a long time.

[0013] In some embodiments, the projection device is a diffractive light waveguide.

[0014] In this way, by selecting the diffraction light waveguide as the projection device, the diffraction light waveguide can be set inside the sun visor body, without the need to set up an additional structure on the sun visor for fixing the projection device and occupying the interior space of the vehicle, thereby simplifying the sun visor structure and reducing costs.

[0015] In some embodiments, the diffraction optical waveguide includes an incoupling grating, a waveguide substrate, and an outcoupling grating, and the incoupling grating and the outcoupling grating are alternately arranged on the waveguide substrate.

[0016] In this way, by staggering the coupling-in grating and the coupling-out grating of the diffraction light waveguide on the waveguide substrate, light containing image information can accurately reach the preset position after being diffracted in the coupling-in grating, the waveguide substrate and the coupling-out grating.

[0017] In some embodiments, the sun visor further includes electrochromic glass, and the electrochromic glass is disposed between the projection device and the predetermined position.

[0018] In this way, by arranging an electrochromic glass on the side of the projection device facing the user, when the sun visor is in use, the electrochromic glass can be adjusted to make the electrochromic glass transparent, so that the projection device can project through the electrochromic glass. When not in use, the electrochromic glass can be made opaque, and the projection device can be hidden behind the electrochromic glass.

[0019] In some embodiments, the sun visor body is formed with a vanity mirror opening, the sun visor body is formed with a vanity mirror opening, the electrochromic glass is arranged in the vanity mirror opening, and the electrochromic glass is configured to work in an opaque state to serve as a vanity mirror.

[0020] Thus, by forming a vanity mirror opening on the sun visor body and disposing the electrochromic glass within the vanity mirror opening, the electrochromic glass can be used as a vanity mirror lens. The sun visor also includes a controller and a user input device, so that the controller can control the transmittance of the electrochromic glass to zero according to user input, thereby allowing the electrochromic glass to function as a vanity mirror. This eliminates the need to re-install a lens on the sun visor to serve as a vanity mirror, thus saving costs.

[0021] In some embodiments, the electrochromic glass is configured to operate in a transparent state to allow the projection device to project through the electrochromic glass.

[0022] In this way, the controller can also make the electrochromic glass transparent according to the control instruction input by the user in the user input device, that is, the transmittance of the electrochromic glass is not 0, so that the projection device can project through the electrochromic glass.

[0023] In some embodiments, the sun visor further includes a sensor for detecting ambient brightness, and the electrochromic glass is configured to adjust transmittance according to the ambient brightness so that the projection of the projection device matches the ambient brightness.

[0024] In this way, by arranging a sensor on the sun visor, the controller can adjust the projection brightness of the projection device according to the light intensity, thereby preventing excessive light differences from causing discomfort to the user during viewing.

[0025] In some embodiments, the sensor is disposed near a light path projected by the projection device.

[0026] In this way, by placing the sensor close to the projection light path of the projection device, the sensor can accurately obtain the light intensity of the external environment during projection, thereby adjusting the projection light intensity in time to avoid a large light intensity difference, which would cause the user to experience dizziness, glare and other discomforts while watching the image.

[0027] In some embodiments, the sun visor includes a controller, which is configured to control the electrochromic glass to adjust transmittance according to an input signal so that the electrochromic glass operates in a transparent state and an opaque state.

[0028] In this way, by arranging a controller in the sun visor, the working state of the sun visor can be controlled according to the user's wishes, thereby making the user's operation more convenient.

[0029] In some embodiments, the sun visor includes an image generating device, and the image generating device is electrically connected to the projection device so that image information generated by the image generating device is transmitted to the projection device.

[0030] In this way, by electrically connecting the image generating device to the projection device, when the user needs entertainment, the projection information can be input into the projection device for projection, satisfying the user's entertainment and leisure, thereby solving the problem of the single function of the sun visor and making full use of the sun visor.

[0031] The vehicle according to the embodiment of the present application includes any one of the sun visors described above.

[0032] In some embodiments, the vehicle includes a fixed structure connected to the sun visor so that the sun visor can be folded and disposed within the vehicle.

[0033] In this way, the sun visor is connected by the fixing structure included in the vehicle, so that the sun visor can be folded when the sun visor is not in use to avoid blocking the user's sight.

[0034] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] FIG1 is a schematic structural diagram of a vehicle according to certain embodiments of the present application;

[0037] FIG2 is a schematic plan view of a sun visor according to certain embodiments of the present application;

[0038] FIG3 is a schematic structural diagram of a sun visor according to certain embodiments of the present application;

[0039] FIG4 is a schematic structural diagram of a sun visor according to certain embodiments of the present application.

[0040] Description of the drawings:

[0041] 10. Vehicle; 11. Sun visor; 111. Sun visor body; 1111. Front cover; 1112. Rear cover; 112. Projection device; 1121. Incoupling grating; 1122. Waveguide substrate; 1123. Outcoupling grating; 113. Electrochromic glass; 114. Dressing mirror opening; 115. Controller; 116. User input device; 117. Sensor; 118. Image generating device; 119. Fixed structure. DETAILED DESCRIPTION

[0042] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of the present application, and should not be understood as limiting the embodiments of the present application.

[0043] In the description of the present application, it should be understood that the terms "thickness", "upper", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0044] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. In an example, it can be a fixed connection, or a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements.

[0045] In the embodiments of the present application, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] Referring to Figure 1 , while operating a vehicle 10, drivers often experience eye discomfort due to sunlight or lighting outside the vehicle, leading to visual fatigue or blurred vision, which in turn poses a driving safety hazard. In this case, a fully light-blocking sun visor 11 is installed above the driver's seat of the vehicle 10 to block light from reaching the driver's eyes. Furthermore, the sun visor 11 can be equipped with a lens to serve as a vanity mirror. However, once the sun visor 11 is used as a vanity mirror, it can no longer serve other purposes. Consequently, the existing sun visor 11 has a limited functionality, preventing it from being fully utilized.

[0047] 2 and 3 , a sun visor 11 according to an embodiment of the present application is used for a vehicle 10 . The sun visor 11 includes a sun visor body 111 and a projection device 112 . The projection device 112 is disposed on the sun visor body 111 .

[0048] In this way, by arranging a projection device 112 on the sun visor 11, when the vehicle 10 is in a stopped state, by adjusting the electrochromic glass 113 to a transparent state, entertainment information such as videos and movies can be projected through the sun visor body 111 to provide users with travel entertainment, thereby solving the problem of the single function of the sun visor 11 and making full use of the sun visor 11.

[0049] Specifically, the sun visor 11 on the vehicle 10 includes a sun visor body 111. The sun visor body 111 is substantially rectangular in shape and includes a front cover 1111 and a rear cover 1112. The front cover 1111 and the rear cover 1112 are connected to form a receiving cavity, and the projection device 112 can be disposed within the receiving cavity. Furthermore, a fixing structure 119 is provided on the sun visor body 111. The fixing structure 119 can be a fixing bracket. One end of the fixing bracket is fixed to the sun visor body 111 (i.e., the front cover 1111 and the rear cover 1112) via a nut or a rotating shaft, and the other end of the fixing bracket is fixed to the roof of the vehicle 10 via a nut or a rotating shaft. Therefore, when sun shading is not needed, the sun visor body 111 can be folded up by the fixing structure 119 and extended down when needed. In this way, by providing a fixing structure 119 on the sun visor 11 and allowing the sun visor body 111 to be movably fixed in the vehicle 10 through the fixing structure 119, the position of the sun visor 11 can be flexibly adjusted according to the height of the user's eyes, thereby preventing the sun visor 11 from blocking the user's line of sight, and allowing the projection to enter the user's eyes when projecting, thereby improving the user's viewing experience.

[0050] The sun visor 11 also includes a projection device 112 that can project an image. In certain embodiments, the projection device 112 can project the image onto a preset position within the passenger compartment of the vehicle 10. The preset position can be adjusted to align with the user's eyeballs. For example, the preset position can be at the same level as the user's eyeballs, so that the projected virtual image is greater than 10 meters away from the user's eyeballs. This provides a large-scale image and enhances the entertainment experience. It also prevents the sun visor 11 from being too close to the user, causing the image to be directly projected onto the sun visor 11. This can cause discomfort such as dizziness due to prolonged viewing.

[0051] In some embodiments, the projection device 112 may be a diffractive optical waveguide, comprising an incoupling grating 1121, a waveguide substrate 1122, and an outcoupling grating 1123. The waveguide substrate 1122 may be the inner wall of a rectangular or circular channel defined within the rear cover 1112 of the sun visor 11. The waveguide substrate 1122 includes a first plane and a second plane that are parallel to each other, with the incoupling grating 1121 and the outcoupling grating 1123 interlaced on the first and second planes. Thus, when the projection device 112 is in operation, incident light carrying image information is projected onto the incoupling grating 1121, then transmitted or reflected by the incoupling grating 1121 into the waveguide substrate 1122, transmitted to the outcoupling grating 1123, and then coupled out through the outcoupling grating 1123 into the user's eye. In this way, by selecting the projection device 112 as a diffraction light waveguide, the diffraction light waveguide can be set inside the sun visor body 111, and there is no need to set an additional structure on the sun visor 11 for fixing the projection device 112 and occupying the internal space of the vehicle 10, thereby simplifying the structure of the sun visor 11 and reducing costs.

[0052] Referring to FIG. 3 , in some embodiments, the sun visor 11 further includes an electrochromic glass 113 , which is disposed between the projection device 112 and the predetermined position.

[0053] In this way, by arranging the electrochromic glass 113 on the side of the projection device 112 facing the user, when the sun visor 11 is in use, the electrochromic glass 113 can be adjusted to make the electrochromic glass 113 transparent, so that the projection device 112 can project through the electrochromic glass 113. When not in use, the electrochromic glass 113 can be made opaque, and the projection device 112 can be hidden behind the electrochromic glass 113.

[0054] Specifically, the sun visor 11 also includes an electrochromic glass 113. The shape of the electrochromic glass 113 matches the shape of the sun visor body 111, that is, the shape of the electrochromic glass 113 is basically rectangular. The electrochromic glass 113 can adjust the light transmittance of the electrochromic glass 113 when the voltage is controlled to change, thereby preventing light from passing through the electrochromic glass 113 and allowing light to pass through the electrochromic glass 113.

[0055] The electrochromic glass 113 is disposed between the projection device 112 and the predetermined position, and may be disposed between the projection device 112 and the user's eyeball. The electrochromic glass 113 is disposed within the accommodating cavity formed by the sun visor body 111 and is clamped by the front cover 1111 and the rear cover 1112. Thus, the electrochromic glass 113 is fixed by the front cover 1111 and the rear cover 1112, thereby preventing the electrochromic glass 113 from shifting due to the bumps of the vehicle 10.

[0056] A projection device 112 is provided on the side of the electrochromic glass 113 away from the user, so that the outgoing light with image information coupled out by the outcoupling grating 1123 can pass through the transparent electrochromic glass 113 and enter the user's eyeball.

[0057] Please refer to FIG. 2 again. In some embodiments, the sun visor body 111 is formed with a vanity mirror opening 114 . The electrochromic glass 113 is disposed in the vanity mirror opening 114 . The electrochromic glass 113 is configured to operate in an opaque state to serve as a vanity mirror.

[0058] Thus, by forming a vanity mirror opening 114 on the sun visor body 111 and disposing the electrochromic glass 113 within the vanity mirror opening 114, the electrochromic glass 113 can be used as a vanity mirror lens. Since the sun visor 11 also includes a controller 115 and a user input device 116, the controller 115 can control the transmittance of the electrochromic glass 113 to zero based on user input, thereby enabling the electrochromic glass 113 to function as a vanity mirror. This eliminates the need to re-install a lens on the sun visor 11 to serve as a vanity mirror, thus saving costs.

[0059] Specifically, in some embodiments, the sun visor 11 functions as a vanity mirror. A vanity mirror opening 114 is formed on the sun visor body 111, that is, the vanity mirror opening 114 is disposed on the front cover 1111 of the sun visor 11 facing the user, allowing the user to apply makeup through the vanity mirror opening 114. The electrochromic glass 113 can be disposed within the vanity mirror opening 114, thereby enabling the electrochromic glass 113 to serve as the lens of the vanity mirror.

[0060] The sun visor 11 further includes a controller 115 and a user input device 116. The controller 115 may be an electronic control unit (ECU) that processes received electrical signals, and the user input device 116 may be a button, a knob, or a touch screen display that inputs user-required control commands.

[0061] The controller 115 can connect the electrochromic glass 113 and the user input device 116. When the user needs to use the dressing mirror function, the user inputs a control instruction for using the dressing mirror function in the user input device 116. The controller 115 can control the electrochromic glass 113 to become opaque according to the control instruction, so that the user can use the opaque electrochromic glass 113 to put on makeup from the dressing mirror opening 114.

[0062] For example, when a user needs to use a dressing mirror to put on makeup, by pressing a button to use the dressing mirror, or adjusting a knob on the dressing mirror, or clicking an interface to use the dressing mirror on the touch screen, the electronic control unit can receive an electrical signal to use the dressing mirror, thereby controlling the control voltage of the electrochromic glass 113, so that the transmittance of the electrochromic glass 113 is adjusted to 0, that is, the electrochromic glass 113 becomes opaque, so that the user can put on makeup through the opaque electrochromic glass 113 at the dressing mirror opening 114.

[0063] Referring to FIG. 2 , in some embodiments, the electrochromic glass 113 is configured to become transparent to allow the projection device 112 to project through the electrochromic glass 113 .

[0064] In this way, the controller 115 can also make the electrochromic glass 113 transparent according to the control instruction input by the user through the user input device 116, that is, the transmittance of the electrochromic glass 113 is not 0, so that the projection device 112 can project through the electrochromic glass 113.

[0065] Specifically, when the user needs to use the projection function of the sun visor 11, the user inputs a control instruction for using the projection function in the user input device 116, and the controller 115 can make the electrochromic glass 113 transparent according to the control instruction, so that the projection device 112 can project through the electrochromic glass 113.

[0066] For example, when the user needs to use the projection function of the sun visor 11, by pressing the button for using the projection function, or adjusting the knob for using the projection function, or clicking the interface for using the projection function on the touch screen, the electronic control unit can receive the electrical signal for using the projection device 112, thereby controlling the control voltage of the electrochromic glass 113, so that the transmittance of the electrochromic glass 113 is adjusted not to 0, that is, the electrochromic glass 113 becomes transparent, so that the projection device 112 can apply makeup through the transparent electrochromic glass 113 in the opening 114 of the dressing mirror.

[0067] Referring to FIG. 2 and FIG. 3 , in some embodiments, the sun visor 11 further includes a sensor 117 for detecting ambient brightness. The electrochromic glass 113 is configured to adjust the transmittance according to the ambient brightness so that the projection of the projection device 112 matches the ambient brightness.

[0068] Thus, by providing the sensor 117 on the sun visor 11 , the controller 115 can adjust the projection brightness of the projection device 112 according to the light intensity, thereby preventing the user from feeling uncomfortable during viewing due to excessive light differences.

[0069] Specifically, the sun visor 11 also includes a sensor 117, which can be a light sensor, such as a high-precision silicon photodiode (SPD). Sensor 117 is disposed on the sun visor body 111 and positioned near the light path of the projection device 112. Specifically, sensor 117 can be positioned on the front cover 1111 on the side closest to the user and along the projection light path. Sensor 117 can detect the light intensity of the environment surrounding the vehicle 10 and transmit the detected light intensity data to a controller 115 connected to sensor 117, which can then adjust the projection brightness based on the light intensity data. This allows sensor 117 to accurately detect the light intensity of the external environment during projection and adjust the projection light intensity in a timely manner.

[0070] For example, when a user needs to use the projection function of the sun visor 11, in order to avoid the excessive light intensity difference causing the user to experience dizziness, glare and other discomforts while watching the projection, it is necessary to adjust the brightness of the projection to maintain a balance with the brightness of the external environment. After the projection device 112 starts the projection, the controller 115 can obtain the light intensity generated by the projection and record it as L0. At this time, the light sensor can obtain the light intensity of the external environment and record it as L1. The obtained light intensity L1 is transmitted to the controller 115 through the light sensor. The controller 115 can compare the light intensity L1 with the light intensity L0, so that the controller 115 adjusts the control voltage of the electrochromic glass 113 according to the light intensity difference, so that the light transmittance of the electrochromic glass 113 reaches the optimal value, thereby improving the user's experience of watching the projection.

[0071] Optionally, referring to FIG. 2 , FIG. 3 and FIG. 4 , the sun visor 11 further includes an image generating device 118 , which is electrically connected to the projection device 112 so that image information generated by the image generating device 118 is transmitted to the projection device 112 .

[0072] In this way, by providing the image generating device 118 on the sun visor 11 , the projection device 112 can receive and project the image information generated by the image generating device 118 , thereby solving the problem of the sun visor 11 having a single function.

[0073] Specifically, the sun visor 11 further includes an image generating device 118, which may be a graphics processing unit (GPU). The image generating device 118 is capable of generating images required for projection. The image generating device 118 may be disposed on the sun visor 11 and connected to the projection device 112. For example, the image generating device 118 may be disposed on the outer cover of the sun visor 11, so that light containing the image generated by the image generating device 118 can enter the projection device 112.

[0074] In some embodiments, the image generating device 118 may also be disposed outside the sun visor 11. For example, the image generating device 118 may be fixed to the roof of the vehicle 10 via a bracket and be on the same plane as the projection device 112 of the sun visor 11, so that the light containing the image generated by the image generating device 118 can enter the projection device 112.

[0075] Referring to FIG. 1 , a vehicle 10 according to an embodiment of the present application includes a sun visor 11 according to the above embodiment.

[0076] According to the vehicle 10 of the embodiment of the present application, the sun visor 11 of the above embodiment can achieve the functions of better shading and vanity mirror, which can avoid safety hazards to a certain extent and allow the user to put on makeup. In addition, the sun visor 11 of the vehicle 10 also has a projection function, thereby making full use of the sun visor 11 of the vehicle 10.

[0077] Throughout this specification, reference to the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with an embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, for example, two or three, unless otherwise specifically defined.

[0079] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A sun visor (11) for a vehicle (10), characterized in that, Comprising: A sun visor body (11); A projection device (112), the projection device (112) being provided on the sun visor body (11).

2. The sun visor (11) according to claim 1, characterized in that, The projection device (112) is configured to project an image to a predetermined position inside the passenger compartment of the vehicle (10).

3. The sun visor (11) according to claim 1 or 2, characterized in that, The distance from the virtual image formed by the projection device (112) to the predetermined position is greater than 10 meters.

4. The sun visor (11) according to any one of claims 1 to 3, characterized in that, The projection device (112) is a diffractive optical waveguide.

5. The sun visor (11) according to claim 4, characterized in that, The diffractive optical waveguide includes an input grating (1121), a waveguide substrate (1122), and an output grating (1123), the input grating (1121) and the output grating (1123) being arranged alternately on the waveguide substrate (1122).

6. The sun visor (11) according to claim 1, characterized in that, The sun visor (11) further comprises: An electrochromic glass (113), the electrochromic glass (113) being provided between the projection device (112) and the predetermined position.

7. The sun visor (11) according to claim 6, characterized in that, The sun visor body (11) is formed with a vanity mirror opening (114), the electrochromic glass (113) being provided in the vanity mirror opening (114), and the electrochromic glass (113) being configured to be operable in an opaque state to serve as a vanity mirror.

8. The sun visor (11) according to claim 6 or 7, characterized in that, The electrochromic glass (113) is configured to be operable in a transparent state to allow the projection device (112) to project through the electrochromic glass (113).

9. The sun visor (11) according to claims 6-8, characterized in that, The sun visor (11) further comprises: A sensor (117), the sensor (117) being used to detect the ambient brightness, and the electrochromic glass (113) being configured to adjust the light transmittance according to the ambient brightness so that the projection of the projection device (112) matches the ambient brightness.

10. The sun visor (11) according to claim 9, characterized in that, The sensor (117) is arranged close to the optical path of the projection of the projection device (112).

11. The sun visor (11) according to claim 9 or 10, characterized in that, The sun visor (11) includes a controller (115), the controller (115) being used to control the electrochromic glass (113) to adjust the light transmittance according to an input signal so that the electrochromic glass (113) operates in a transparent state and an opaque state.

12. The sun visor (11) according to claims 9-11, characterized in that, The sun visor (11) includes an image generation device (118), the image generation device (118) being electrically connected to the projection device (112) so that the image information generated by the image generation device (118) is transmitted to the projection device (112).

13. A vehicle (10), characterized in that, Including the sun visor (11) according to any one of claims 1 to 9.

14. The vehicle (10) according to claim 13, characterized in that, The vehicle (10) includes a fixing structure (119), the fixing structure (119) being connected to the sun visor (11) so that the sun visor (11) is foldably arranged inside the vehicle (10).

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