HUD cover cap treatment method for preventing light spots from being formed, cover cap and vehicle
By dividing the reflective area on the HUD cover and spraying matte paint for shielding and shaping, the problems of high cost and low flexibility in the existing technology are solved, and the combination of safe driving and styling freedom is achieved.
Patent Information
- Application Number
- CN202511050102.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-09-26
AI Technical Summary
The existing technology reduces the glossiness by flocking the entire HUD cover to prevent the formation of light spots, but this is costly and has low flexibility, making it impossible to quickly change the shape.
By dividing the reflective area into reflective and non-reflective areas, spraying the reflective area with matte paint, and performing shading and styling treatments, it is ensured that sunlight does not form dazzling spots on the front windshield, while allowing the appearance to be changed freely.
It avoids the formation of light spots without affecting the shape, ensures the safety of the driver, reduces the cost of change and improves the flexibility of the shape.
Smart Images
Figure CN120696050A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of automotive parts, and in particular to a HUD cover processing method for preventing light spots from forming, a cover, and a vehicle. Background Art
[0002] A car's head-up display (HUD) is an intelligent electronic system that projects vehicle information, such as speed, navigation, and road conditions, onto the windshield in front of the driver, allowing the driver to view critical driving information without having to look down or turn their head. The HUD also provides the driver with both vehicle status and external information, making it a crucial piece of hardware for future vehicle intelligence, connectivity, and human-machine interaction. However, the HUD itself has curved, transparent glass that focuses sunlight, reflecting it onto the HUD cover. The HUD cover then reflects light back onto the glass, creating a dazzling bright area that obscures the driver's vision and compromises safe driving.
[0003] Currently, flocking is performed on the entire HUD cover to reduce its glossiness, thereby preventing it from reflecting sunlight and forming a dazzling spot on the front windshield.
[0004] However, flocking is expensive and inflexible. The entire HUD cover is flocked, which limits the shape of the HUD cover and prevents the shape of the HUD cover from being changed freely and quickly. Summary of the Invention
[0005] In view of this, the present application provides a HUD cover processing method, cover and vehicle to prevent the formation of light spots. By dividing the reflective area and the non-reflective area, spraying matte paint on the reflective area, and shaping the non-reflective area, the appearance of the cover can be freely changed while ensuring that no dazzling light spots are formed on the front windshield.
[0006] In a first aspect, the present application provides a method for processing a HUD cover to prevent light spots from forming, comprising: Determine the reflective area of the HUD cover body, where the reflective area refers to the area capable of reflecting sunlight passing through the vehicle's front windshield onto the front windshield; Spray matte paint on the reflective area of the HUD cover body; Block the reflective area of the HUD cover body sprayed with matte paint; The surface of the HUD cover body after shielding is subjected to shaping processing to obtain a HUD cover that prevents light spots from being formed.
[0007] Optionally, a masking tool is used to shield the reflective area of the HUD cover body sprayed with matte paint; The shielding tooling includes a shielding plate, the cross-sectional shape of the shielding plate is consistent with the cross-sectional shape of the reflection area; the shielding plate is connected to the HUD cover body in a detachable manner.
[0008] Optionally, a frame is provided around the shielding plate; A shielding process groove adapted to the frame is provided on the outer edge of the reflective area of the HUD cover body; The frame is inserted into the shielding process groove to achieve a detachable connection between the shielding plate and the HUD cover body.
[0009] Optionally, the glossiness of the matte paint is less than 0.3, and the reflectivity of the matte paint is less than 0.27.
[0010] Optionally, the spraying thickness of the matte paint is greater than 20 μm and less than 30 μm.
[0011] Optionally, the shaping treatment performed on the surface of the HUD cover body after shielding includes spraying contour paint, leather grain decoration treatment or cleaning treatment.
[0012] Optionally, the reflective area of the HUD cover body is sprayed with matte paint and then heated and dried; after the matte paint is dried, the reflective area of the HUD cover body sprayed with matte paint is shielded.
[0013] The second aspect of the present application provides a HUD cover for preventing light spots from forming, including a HUD cover body, on which a reflective area and a non-reflective area are divided; a matte paint coating is provided on the reflective area; and a shape is provided on the non-reflective area; wherein the reflective area refers to an area that can reflect sunlight passing through the vehicle's front windshield onto the front windshield, and the non-reflective area is an area outside the reflective area on the HUD cover body.
[0014] Optionally, a shielding process groove is provided at the outer edge of the reflection area of the HUD cover body.
[0015] A third aspect of the present application provides a vehicle, comprising a HUD cover for preventing light spots from forming provided by the second aspect of the present application.
[0016] Compared with the prior art, the embodiments of the present application can achieve the following beneficial effects: The embodiments of the present application provide a method for processing a HUD cover to prevent light spots, a cover, and a vehicle. The method first determines the reflective area of the HUD cover body, then sprays matte paint on the reflective area of the HUD cover body; then blocks the reflective area of the HUD cover body sprayed with matte paint; and finally, performs a shaping treatment on the surface of the blocked HUD cover body to obtain a HUD cover that prevents light spots. By blocking the reflective area, the matte paint in the reflective area can be ensured not to be damaged, so that sunlight entering the front windshield will not be reflected by the reflective area onto the front windshield to form a dazzling light spot, thereby preventing the reflected light from interfering with the driver's vision and ensuring safe driving for the driver. Finally, the surface of the blocked HUD cover body is subjected to a shaping treatment, which enables the cover's appearance to be freely changed. Even after mass production, the shape and appearance style can be freely changed, reducing the cost of modification. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0018] Figure 1 This is a flow chart of a HUD cover processing method for preventing light spots from forming provided by an embodiment of the present application; Figure 2 Schematic diagram of the HUD cover reflecting sunlight mentioned in the embodiment of the present application; Figure 3 Schematic diagram of the structure of the HUD cover provided in an embodiment of the present application; Figure 4 This is a schematic diagram of the shielding tooling provided in an embodiment of the present application shielding the HUD cover.
[0019] Among them: 1. Reflective area, 2. Non-reflective area, 3. Shielding process tank, 4. Shielding tooling.
[0020] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION
[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide optional explanations of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.
[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0024] In the present invention, terms such as "fixed connection," "connected," and "connection" should be interpreted broadly to mean a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediary. Relevant researchers or technicians in this field may determine the specific meanings of these terms in the present invention based on specific circumstances, and they should not be construed as limitations of the present invention.
[0025] First, the application scenarios of the embodiments of the present application are described.
[0026] The embodiment of the present application provides a method for processing a HUD cover to prevent light spots from forming, which is applied to the HUD cover of a car. The HUD cover includes a light-transmitting curved glass and a light transmission channel. Figure 2 As shown in the figure, sunlight shines on the HUD translucent curved glass. After the curved glass reflects the sunlight, it reaches the inner wall of the HUD light transmission channel and is refracted twice before being projected onto the driver's field of view on the windshield, forming a dazzling bright light area that affects the driver's vision and thus affects safe driving.
[0027] Currently, flocking is the primary method used to reduce the glossiness of the HUD cover, thereby preventing sunlight from reflecting and creating glare on the windshield. However, flocking is expensive and inflexible. Flocking the HUD cover also limits its styling, preventing the cover from being easily and quickly modified after mass production.
[0028] The HUD cover body refers to the HUD cover body after injection molding, and the HUD cover body has not yet been subjected to flocking, film pasting and other treatments.
[0029] This embodiment of the application applies a method for treating a HUD cover to prevent flare formation to the HUD cover itself, thereby achieving an anti-flare HUD cover. After sunlight is reflected from the HUD cover, the light is no longer entirely reflected by the mirror surface, but rather reflected into the driver's field of view on the windshield. Furthermore, the reflective and non-reflective areas are distinguished, providing a high degree of freedom.
[0030] The HUD cover body mentioned in the embodiments of the present application refers to the HUD cover body currently in use.
[0031] On this basis, an embodiment of the present application provides a method for processing a HUD cover to prevent light spots from forming, including: Determine a reflective area 1 of the HUD cover body, wherein the reflective area refers to an area capable of reflecting sunlight passing through the vehicle's front windshield onto the front windshield; Spray matte paint on the reflective area 1 of the HUD cover body; Block the reflective area of the HUD cover body sprayed with matte paint; The surface of the HUD cover body after shielding is subjected to shaping processing to obtain a HUD cover that prevents light spots from being formed.
[0032] The embodiment of the present application determines the reflective area of the HUD cover body and then sprays matte paint on the reflective area, so that the sunlight entering from the front windshield will not be reflected by the reflective area onto the front windshield to form a dazzling spot, thereby avoiding the reflected light from interfering with the driver's vision and ensuring the driver's safe driving; by blocking the reflective area and then shaping the HUD cover body, while ensuring that the matte paint in the reflective area is not damaged, the appearance of the cover can be freely changed, and the shape and appearance style can be freely changed even after mass production, reducing the cost of change and having a high degree of freedom.
[0033] In some embodiments of the present application, the incident angle range of sunlight, the structural parameters of the HUD cover body, and the installation position of the HUD cover are obtained; According to the range of the incident angle of sunlight, the structural parameters of the HUD cover body and the installation position of the HUD cover, the area on the HUD cover body that can reflect sunlight to the front windshield of the vehicle is determined as the reflection area of the HUD cover body.
[0034] Exemplarily, all reflection positions of the sunlight on the HUD cover body and the reflection direction corresponding to each reflection position are determined based on the range of the sunlight incident angle, the structural parameters of the HUD cover body, and the installation position of the HUD cover; Determine the reflection position on the front windshield that can be reached by the reflection direction as the effective reflection position; The area formed by all effective reflection positions is regarded as the reflection area.
[0035] Optionally, the reflection position of the sunlight on the HUD cover body and the reflection direction corresponding to the reflection position are determined according to ray tracing and reflection laws.
[0036] The embodiment of the present application accurately determines the reflective area on the HUD cover body based on the range of incident angles of sunlight, the structural parameters of the HUD cover body, and the installation position of the HUD cover, thereby spraying the matte paint within the most limited reflective area possible, so that the HUD cover body has a larger non-reflective area for shaping.
[0037] In some embodiments of the present application, a masking tool 4 is used to shield the reflective area of the HUD cover body sprayed with matte paint; The shielding tooling 4 includes a shielding plate, the cross-sectional shape of the shielding plate is consistent with the cross-sectional shape of the reflection area; the shielding plate is connected to the HUD cover body in a detachable manner.
[0038] By providing the masking tool 4, the accuracy and uniformity of masking the reflective area of the HUD cover body are achieved, so as to ensure that the final HUD cover of the same model has a uniform appearance.
[0039] like Figure 4 As shown, a frame is provided around the shielding plate; A shielding process groove 3 adapted to the frame is provided on the outer edge of the reflective area 1 of the HUD cover body; The frame is inserted into the shielding process groove 3 to achieve a detachable connection between the shielding plate and the HUD cover body.
[0040] By providing a frame and a masking process groove 3, it is possible to ensure the quick disassembly of the masking tooling and the HUD cover body, and the frame can also protect the reflective area to prevent the edge of the masking tooling from entering the reflective area when the HUD cover is being shaped, thereby preventing the matte paint of the reflective area from being affected.
[0041] Exemplarily, the width and depth of the masking process groove 3 are 1 mm*0.7 mm, and this size can be changed according to specific needs.
[0042] The shielding process groove 3 distinguishes between the reflective area and the non-reflective area, wherein the non-reflective area refers to the rest of the area on the HUD cover except the reflective area. When it is determined that the inner wall of the light transmission channel of the HUD cover is the reflective area, the position of the shielding process groove 3 is defined to avoid the reflective area. Secondly, combined with the shape and manufacturability, it is defined at the edge corner of the HUD cover channel, such as Figure 3 shown.
[0043] In this embodiment, matte paint is sprayed on the reflective area to diffusely reflect sunlight, thereby preventing glaring spots from forming on the windshield. To ensure the matte effect, the matte paint sprayed on the reflective area is a low-gloss, low-reflectivity paint. The gloss of the matte paint is less than 0.3, and the reflectivity of the matte paint is less than 0.27. The matte paint is sprayed with a thickness of greater than 20μm and less than 30μm.
[0044] The matting paint contains resins with excellent chemical resistance and adhesion to ensure the long-term bonding stability between the coating and the HUD cover substrate. Functional fillers with high light absorption efficiency and large specific surface area are added to reduce reflectivity through light absorption and scattering. Matting powder with a particle size adapted to the coating film thickness is used to form a microscopic rough structure on the coating surface to enhance diffuse reflection.
[0045] For example, when the HUD cover body substrate is made of PC+ABS material, the resin with excellent chemical resistance and adhesion added to the matte paint is polyester-modified epoxy resin; PC+ABS material is a mixture of polycarbonate (PC) and acrylonitrile-butadiene-styrene copolymer (ABS).
[0046] The functional fillers included may be nano carbon black, modified diatomaceous earth, etc.
[0047] The matting powder included may be fumed silica or the like.
[0048] In some embodiments, before spraying matte paint on the reflective area of the HUD cover body, the reflective area of the HUD cover body must first be cleaned to remove oil stains and release agents to ensure the adhesion of the matte paint coating.
[0049] Exemplarily, the reflective area of the HUD cover body is sprayed with matte paint and then heated and dried; after the matte paint is dried, the reflective area of the HUD cover body sprayed with matte paint is shielded.
[0050] After spraying matte paint on the reflective area of the HUD cover body, it is first left to stand at room temperature for 5-10 minutes to avoid deformation caused by sudden heat. It is then heated and dried at a temperature between 40℃ and 50℃ for 50 minutes to ensure that the matte paint is completely dry, adheres to the reflective area, and improves the performance of the matte paint. After that, the reflective area of the HUD cover body where the matte paint is sprayed is shielded using a masking tool.
[0051] Different HUD covers require different shapes. In the embodiment of the present application, the surface of the HUD cover body after being shielded is shaped according to the styling requirements, which can increase the styling department's freedom in choosing the color and texture of the car interior; it can also reduce the overall cost of the parts.
[0052] In some embodiments of the present application, the shaping treatment performed on the surface of the HUD cover body after shielding includes spraying contour paint, leather grain decoration treatment or cleaning treatment.
[0053] If spray painting is required, the masked HUD cover body is sprayed with a contour paint. This can be a PU matte paint with a thickness of 35μm to 65μm and a normal gloss of 1.4±0.2. After spraying the HUD cover body, the color and glossiness of the paint remain consistent with the instrument panel. After spraying, the contour paint is allowed to stand and then baked to ensure that the contour paint is fully adhered to the HUD cover body. The finished product is the anti-glare HUD cover.
[0054] Among them, the spraying process of spraying the outer shape paint and the static baking treatment process can be carried out according to the currently commonly used spraying process.
[0055] The surface of the HUD cover body after shielding can also be treated with leather grain decoration according to the styling requirements, and a HUD cover with anti-light spot formation can be obtained after the treatment.
[0056] When the non-reflective area of the HUD cover body does not need to be painted or treated with leather grain according to the styling requirements, it is only necessary to clean the surface of the HUD cover body after shielding to remove oil stains on the non-reflective area. After the cleaning process is completed, a HUD cover with anti-light spot formation is obtained.
[0057] The present invention provides a method for treating a HUD cover to prevent flare formation. After sunlight is reflected from the HUD cover, it is no longer entirely reflected by the mirror surface, but instead is reflected into the driver's field of view on the windshield. This prevents reflected light from interfering with the driver's vision and ensures safe driving. Furthermore, the reflective and non-reflective areas are distinguished, providing a high degree of flexibility, allowing for the free modification of the shape and appearance even after mass production, thus reducing modification costs.
[0058] The embodiment of the present application also provides a HUD cover to prevent light spots from forming, such as Figure 3 As shown, it includes a HUD cover body, which is divided into a reflective area 1 and a non-reflective area 2; a matte paint coating is provided on the reflective area 1; and a shape is provided on the non-reflective area 2; wherein, the reflective area 1 refers to the area that can reflect sunlight passing through the vehicle's front windshield onto the front windshield, and the non-reflective area 2 is the area outside the reflective area on the HUD cover body.
[0059] Optionally, a shielding process groove 3 is provided at the outer edge of the reflection area 1 of the HUD cover body.
[0060] It should be noted that the anti-spot HUD cover provided in the above embodiment and the anti-spot HUD cover processing method embodiment belong to the same concept. It is the HUD cover finally obtained by the anti-spot HUD cover processing method, and will not be repeated here.
[0061] An embodiment of the present application also provides a vehicle, including a HUD cover for preventing light spots from forming provided by an embodiment of the present application.
[0062] Among them, the vehicle can be an intelligent driving vehicle, etc.
[0063] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only.
[0064] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.
Claims
1. A method for treating a HUD cover to prevent light spots from forming, characterized in that: include: Determine the reflective area of the HUD cover body, where the reflective area refers to the area capable of reflecting sunlight passing through the vehicle's front windshield onto the front windshield; Spray matte paint on the reflective area of the HUD cover body; Block the reflective area of the HUD cover body sprayed with matte paint; The surface of the HUD cover body after shielding is subjected to shaping processing to obtain a HUD cover that prevents light spots from being formed.
2. The method for processing a HUD cover to prevent light spot formation according to claim 1, characterized in that: Use masking tooling to block the reflective area of the HUD cover body where matte paint is sprayed; The shielding tooling includes a shielding plate, the cross-sectional shape of the shielding plate is consistent with the cross-sectional shape of the reflection area; the shielding plate is connected to the HUD cover body in a detachable manner.
3. The method for treating a HUD cover to prevent light spot formation according to claim 2, wherein: A frame is provided around the shielding plate; A shielding process groove adapted to the frame is provided on the outer edge of the reflective area of the HUD cover body; The frame is inserted into the shielding process groove to achieve a detachable connection between the shielding plate and the HUD cover body.
4. The method for treating a HUD cover to prevent light spot formation according to claim 1, wherein: The glossiness of the matte paint is less than 0.3, and the reflectivity of the matte paint is less than 0.
27.
5. The method for treating a HUD cover to prevent light spot formation according to claim 1, wherein: The spraying thickness of the matte paint is greater than 20μm and less than 30μm.
6. The method for treating a HUD cover to prevent light spot formation according to claim 1, wherein: The shaping treatment performed on the surface of the HUD cover body after shielding includes spraying exterior paint, leather grain decoration treatment or cleaning treatment.
7. The method for treating a HUD cover to prevent light spot formation according to claim 1, wherein: The reflective area of the HUD cover body is sprayed with matte paint and then heated and dried; after the matte paint is dried, the reflective area of the HUD cover body sprayed with matte paint is shielded.
8. A HUD cover for preventing light spots from forming, characterized in that: It includes a HUD cover body, which is divided into a reflective area and a non-reflective area; a matte paint coating is provided on the reflective area; and a shape is provided on the non-reflective area; wherein, the reflective area refers to the area that can reflect sunlight passing through the vehicle's front windshield onto the front windshield, and the non-reflective area is the area outside the reflective area on the HUD cover body.
9. The HUD cover for preventing light spot formation according to claim 8, characterized in that: A shielding process groove is provided at the outer edge of the reflection area of the HUD cover body.
10. A vehicle comprising the HUD cover for preventing light spot formation according to any one of claims 8 to 9.