Curved mirror, projection device, head-up display system and vehicle

Abstract

The utility model provides a curved mirror, a projection device, a head-up display system and a vehicle. The curved mirror comprises an injection molding body and a reflecting film. The injection molding body comprises a curved mirror body, a fixed frame and two rotating shafts, the curved mirror body comprises a reflecting surface and a non-reflecting surface, the reflecting surface is opposite to the non-reflecting surface in the thickness direction of the curved mirror body, and the reflecting surface is a concave surface. The fixed frame is arranged around the curved mirror body, the thickness of the fixed frame is larger than that of the curved mirror body, and the fixed frame protrudes relative to the non-reflecting surface. In the first direction, the two rotating shafts are connected to the two opposite sides of the fixed frame respectively and are coaxially arranged, and the first direction is the length direction of the injection molding body. The reflecting film is connected to the reflecting surface and is used for reflecting light. According to the embodiment of the invention, the assembly mode of the curved mirror can be simplified, so that the production cost of the head-up display system is reduced, and the imaging quality of the head-up display system is improved.

Description

Technical Field

[0001] The present application relates to the field of head-up display, and in particular to a curved mirror, a projection device, a head-up display system and a vehicle. Background Art

[0002] At present, common head-up display systems generally include a curved mirror responsible for reflecting and projecting image information onto the windshield of the vehicle. The curved mirror is generally assembled on the housing of the vehicle's projection device through multiple brackets. However, due to the low structural strength of the curved mirror made of glass, the complicated assembly process will not only increase the production cost of the entire head-up display system, but also affect the structural stability of the curved mirror, thereby affecting the imaging quality of the entire head-up display system. Utility Model Content

[0003] The embodiments of the present application provide a curved mirror, a projection device, a head-up display system and a vehicle, which can simplify the assembly method of the curved mirror, thereby reducing the production cost of the head-up display system and improving the imaging quality of the head-up display system.

[0004] In a first aspect, the present application provides a curved mirror, which includes an injection molded body and a reflective film. The injection molded body includes a curved mirror body, a fixed frame and two rotating shafts, and the curved mirror body, the fixed frame and the two rotating shafts are integrally injection molded. The curved mirror body includes a reflective surface and a non-reflective surface. In the thickness direction of the curved mirror body, the reflective surface is opposite to the non-reflective surface, and the reflective surface is a concave surface. The fixed frame is connected to the periphery of the curved mirror body in a surrounding manner. In the thickness direction of the injection molded body, the thickness of the fixed frame is greater than the thickness of the curved mirror body, and the fixed frame protrudes relative to the non-reflective surface. In the first direction, the two rotating shafts are respectively connected to the opposite sides of the fixed frame, and the two rotating shafts are coaxially arranged, wherein the first direction is the length direction of the injection molded body. The reflective film covers the reflective surface.

[0005] In this embodiment, since the thickness of the fixed frame is relatively thick, the fixed frame can reinforce the overall strength of the curved mirror body, thereby preventing the curved mirror body from being deformed when subjected to external force, preventing the curved mirror body from being slightly deformed due to excessive stress, and preventing the reflection light path of the reflection film on the reflection surface from being changed, thereby preventing the imaging distortion of the head-up display system.

[0006] In addition, since the curved mirror is integrally injection molded, when the curved mirror is demolded, the overall structure of the curved mirror is relatively stable and the curved mirror is not easily deformed, thus avoiding deformation during demolding and affecting the flatness of the reflective surface. A flat curved mirror can reduce light scattering and diffraction, making the image projected onto the vehicle's windshield clearer and sharper. It reduces image distortion and deformation caused by the uneven reflective surface of the curved mirror, ensuring that the driver can accurately read vehicle information.

[0007] A flat curved mirror can reduce the visual fatigue of the driver's eyes when observing images. It can avoid glare or ghosting caused by uneven mirror surfaces and improve driving safety. A flat curved mirror helps to achieve more precise light path design, ensuring that light can be projected into the driver's field of vision according to the predetermined path.

[0008] In a possible implementation, the fixed frame includes two first parts and two second parts, the two first parts are arranged opposite to each other along the second direction, and the two first parts are respectively connected to the two long sides of the curved mirror body. The second direction is the width direction of the injection molded body. The two second parts are arranged opposite to each other along the first direction, and the two second parts are respectively connected to the two wide sides of the curved mirror body. The second part is connected between the two first parts, and the second part includes a middle part and two end parts, the middle part is connected between the two end parts, the thickness of the middle part is greater than the thickness of the end parts, and the two rotating shafts are respectively connected to the middle part of the two second parts on one side away from the curved mirror body.

[0009] In this embodiment, since the stress on the shaft is concentrated during the rotation of the shaft, the middle part of the second part is thickened to prevent the stress of the shaft from being transferred to the second part, causing the second part to deform, and to prevent the deformation of the second part from affecting the shape of the reflective surface of the curved mirror body, thereby preventing the curved mirror body from being slightly deformed due to excessive stress, and preventing the reflection light path of the reflective film on the reflection surface from changing to cause imaging distortion of the head-up display system.

[0010] In a possible embodiment, the injection molded body also includes a first fixed block, the first fixed block includes a first supporting surface and a second supporting surface, the extension direction of the first supporting surface intersects with the extension direction of the second supporting surface, the first supporting surface is connected to the side of the middle part away from the rotating axis, and the second supporting surface is connected to the non-reflective surface.

[0011] In this embodiment, the first fixing block can further strengthen the relative position of the second part and the curved mirror body, further enhance the structural strength of the second part, and reduce deformation of the second part due to the force of the rotating shaft.

[0012] In a possible implementation, the second part includes an outer side surface and a transition surface, the transition surface faces the reflective surface, the outer side surface faces away from the curved mirror body, the rotating shaft is connected to the outer side surface, the transition surface is connected between the reflective surface and the outer side surface, and the reflective film and the transition surface are staggered.

[0013] In this embodiment, the transition surface can transition between the rotating shaft and the reflecting surface. After the external force of the rotation of the rotating shaft is transmitted to the second part, after the external force is transmitted from the rotating shaft to the reflecting surface through the transition surface, the external force on the reflecting surface has been attenuated. Therefore, the reflecting surface may not be deformed due to the external force of the rotating shaft, thereby avoiding slight deformation of the reflecting surface due to excessive stress, and avoiding changes in the reflection light path of the reflective film on the reflecting surface, which may cause imaging distortion of the head-up display system.

[0014] In a possible implementation, the injection molding body further includes a push rod, and the push rod includes a connecting portion and a guiding portion. The connecting portion includes a first connecting segment and a second connecting segment, the first connecting segment and the second connecting segment are bent and connected, the first connecting segment is connected to the side of the first portion facing the non-reflective surface, and the second connecting segment is connected to the side of the first portion facing away from the curved mirror body. The guiding portion is connected to the side of the second connecting segment facing away from the first portion.

[0015] In this embodiment, the push rod is used to accurately adjust the position of the curved mirror to ensure that the image projected by the head-up display system can be accurately aligned with the driver's field of vision. By adjusting the push rod, the position of the curved mirror can be fine-tuned to adapt to the sitting posture and vision requirements of different drivers.

[0016] In a possible implementation manner, the second connecting section is concavely provided with a material cutting groove, and the material cutting groove is concavely provided from the surface of the second connecting section toward the reflecting surface.

[0017] In this embodiment, the material groove can reduce the volume of the second connecting section, avoid excessive deformation of the second connecting section when it cools and shrinks after demolding, avoid the deformation of the push rod affecting the structural stability of the first part, and further avoid the deformation shrinkage force being transmitted to the curved mirror body, thereby ensuring that the reflective surface of the curved mirror body is not affected by injection molding structures such as the fixed frame.

[0018] In addition, the material removal groove can also reduce the connection area between the second connecting section and the first part, thereby reducing the force transmitted from the push rod to the first part and avoiding the push rod from affecting the shape of the fixed frame and the curved mirror body.

[0019] In a possible implementation manner, the surface of the first connecting section facing the curved mirror body is flush with the surface of the first part facing the curved mirror body. The injection molded body further includes a second fixing block, the second fixing block includes a third supporting surface and a fourth supporting surface, the third supporting surface intersects with the extension direction of the fourth supporting surface, the third supporting surface is connected to the non-reflective surface, and the fourth supporting surface is connected to the surface of the first connecting section facing the curved mirror body and the surface of the first part facing the curved mirror body.

[0020] In this embodiment, the second fixed block can make the relative position of the first part and the curved mirror body more stable, and prevent the relative position of the first part and the curved mirror body from changing when receiving the external force of the push rod, so as to make the overall structure of the curved mirror more stable and prevent the curved mirror from being slightly deformed or vibrated and affecting the stability of the light reflected by the curved mirror.

[0021] In a second aspect, the present application also provides a projection device, comprising an optical engine, a shell and the curved mirror as described above, wherein two rotating shafts of the curved mirror are rotatably connected to the shell, and the optical engine is used to emit image light. The image light is transmitted in the optical path between the optical engine and the curved mirror, and is reflected on the reflective film of the curved mirror.

[0022] In a third aspect, the present application also provides a head-up display system, which includes an imaging device and the projection device as described above, and the imaging device can receive light emitted by the projection device to form an image.

[0023] In a fourth aspect, the present application also provides a vehicle, comprising a vehicle body and the head-up display system as described above, wherein the head-up display system is installed in the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0025] Figure 1 is a schematic structural diagram of a vehicle provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 An exploded schematic diagram of a curved mirror of a projection device shown;

[0027] Figure 3 yes Figure 2 A schematic structural diagram of a curved mirror at an angle shown;

[0028] Figure 4 yes Figure 3 An enlarged schematic diagram of part A of the curved mirror shown;

[0029] Figure 5 yes Figure 3 An enlarged schematic diagram of part B of the curved mirror shown;

[0030] Figure 6 yes Figure 3 An enlarged schematic diagram of part C of the curved mirror shown;

[0031] Figure 7 yes Figure 3 A schematic structural diagram of the curved mirror at another angle shown;

[0032] Figure 8 yes Figure 7 An enlarged schematic diagram of portion D of the curved mirror is shown.

[0033] Reference numerals:

[0034] 100, vehicle; 10, vehicle body; 20, head-up display system; 21, imaging device; 22, projection device; 220, curved mirror; 222, injection molding; 223, curved mirror body; 221, reflective film; 224, fixed frame; 225, rotating shaft; 226, push rod; 2231, reflective surface; 2232, non-reflective surface; 2241, first part; 2242, second part; 2243, middle part; 2244, end part; 2245, outer side surface; 2246, transition surface; 227, first Fixed block; 2271, first supporting surface; 2272, second supporting surface; 2273, first block; 2274, second block; 2275, third block; 2276, fourth block; 2277, fifth block; 2261, connecting portion; 2262, guiding portion; 2263, first connecting section; 2264, second connecting section; 2266, material ditch; 228, second fixed block; 2283, sixth block; 2284, seventh block; 2285, eighth block; 2286, ninth block; 2287, tenth block. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the following embodiments.

[0036] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0037] Multiple: refers to two or more than two.

[0038] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either direct or indirect through an intermediary.

[0039] Vertical: The verticality defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. It also allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0040] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.

[0041] See also Figure 1 , Figure 1 1 is a schematic diagram of the structure of a vehicle 100 provided in an embodiment of the present application. The vehicle 100 includes a vehicle body 10 and a head-up display system 20. The head-up display system 20 is installed in the vehicle body 10.

[0042] It should be noted that Figure 1 The purpose is only to schematically describe the connection relationship between the vehicle body 10 and the head-up display system 20, and it does not specifically limit the connection position, specific structure and quantity of each device. The structure illustrated in the embodiment of the present application does not constitute a specific limitation on the vehicle 100. In other embodiments of the present application, the vehicle 100 may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0043] The head-up display system 20 includes an imaging device 21 and a projection device 22 . The imaging device 21 can receive light emitted by the projection device 22 to form an image.

[0044] In this embodiment, the head-up display system 20 can directly project important information such as vehicle speed, rotation speed, fuel level, gear position, navigation instructions, traffic information, road speed limit and / or driver assistance system status (such as lane departure warning, adaptive cruise control) onto the windshield in front of the driver. In this way, the driver can obtain this information in real time without lowering his head to check the instrument panel or diverting his eyes, thereby improving driving safety and convenience.

[0045] The projection device 22 can project the information to be displayed (such as vehicle speed, navigation instructions, etc.) onto the imaging device 21 in the form of an image. Specifically, the projection device 22 converts the information into a visible image through a series of optical means (such as an image generator forms an image, and then performs optical magnification, zooming, etc.) and projects it onto the windshield or a specific position in front of the driver. In this way, the driver can directly see the required information without lowering his head to check the dashboard or shifting his sight.

[0046] The imaging device 21 serves as a carrier of the projected image, and clearly presents the image projected by the projection device 22. The imaging device 21 can be the windshield itself, or a piece of transparent resin glass in front of the driver.

[0047] The projection device 22 includes an optical engine (not shown), a housing (not shown) and a curved mirror (not shown). The curved mirror is rotatably connected to the housing, and the optical engine is used to emit image light, which can be transmitted in the optical path between the optical engine and the curved mirror and reflected on the surface of the curved mirror.

[0048] The curved mirror is located on the optical path of the optical machine and is used to reflect the image light generated by the optical machine. Through the reflection of the curved mirror, the image light forms an optical path along a specific angle, and is thus projected onto the imaging device 21. The design of the curved mirror enables the light to propagate along a predetermined path, ensuring that the image can be accurately presented within the driver's field of vision.

[0049] At present, common head-up display systems generally include a curved mirror responsible for reflecting and projecting image information onto the windshield of the vehicle. The curved mirror is generally assembled on the housing of the vehicle's projection device through multiple brackets. However, due to the low structural strength of the curved mirror made of glass, the complicated assembly process will not only increase the production cost of the entire head-up display system, but also affect the structural stability of the curved mirror, thereby affecting the imaging quality of the entire head-up display system.

[0050] Based on this, see Figure 2 , Figure 2 yes Figure 1 The exploded schematic diagram of the curved mirror 220 of the projection device 22 shown. The embodiment of the present application provides a curved mirror 220, which can simplify the assembly method of the curved mirror 220, thereby reducing the production cost of the head-up display system 20 and improving the imaging quality of the head-up display system 20. For the convenience of description, the length direction of the curved mirror 220 is defined as the first direction, and the first direction is the Y direction in the figure. The width direction of the curved mirror 220 is defined as the second direction. The second direction is the X direction in the figure. The thickness direction of the curved mirror 220 is defined as the third direction. The third direction is the Z direction in the figure. Among them, the first direction, the second direction and the third direction can be perpendicular to each other. Exemplarily, the length of the curved mirror 220 provided in the embodiment of the present application can be greater than or equal to 340 mm, and the width of the curved mirror 220 can be greater than or equal to 140 mm.

[0051] The curved mirror 220 includes an injection molded body 222 and a reflective film 221. The injection molded body 222 can be injection molded. In this embodiment, the injection molding process is relatively fast. This means that more injection molded parts can be produced within a given production time. The injection molding process is easy to automate, which further improves production efficiency and reduces labor costs. Relatively little waste is generated during the injection molding process, and the labor cost of the injection molding operation is relatively low compared to other types of molding processes.

[0052] See also Figure 3 , Figure 3 yes Figure 2A schematic diagram of the structure of the curved mirror 220 at an angle is shown. The injection molding body 222 includes a curved mirror body 223, a fixed frame 224, two rotating shafts 225 and a push rod 226. The fixed frame 224 is arranged around the curved mirror body 223. In a first direction, the two rotating shafts 225 are respectively connected to the opposite sides of the fixed frame 224, and the two rotating shafts 225 are coaxially arranged. Among them, the first direction is also the length direction of the injection molding body 222. The push rod 226 is connected to the outer periphery of the fixed frame 224, and is arranged on a different side of the fixed frame 224 from the rotating shaft 225.

[0053] In this embodiment, the fixed frame 224 is relatively thick, and the fixed frame 224 can reinforce the overall strength of the curved mirror body 223 to prevent the curved mirror body 223 from deforming when subjected to external force, thereby preventing the reflection light path of the reflection film 221 from changing and causing imaging distortion of the head-up display system 20.

[0054] In addition, since the curved mirror 220 is integrally injection molded, the overall structure of the curved mirror 220 is relatively stable. When the curved mirror 220 is demolded, the curved mirror 220 is not easily deformed, thereby avoiding deformation of the curved mirror 220 during demolding and affecting the flatness of the curved mirror body 223. The flat curved mirror 220 can reduce the scattering and diffraction of light, making the image projected onto the windshield of the vehicle clearer and sharper. The image distortion and deformation caused by the uneven reflective surface of the curved mirror 220 are reduced, ensuring that the driver can accurately read the vehicle information.

[0055] The flat curved mirror 220 can also reduce the visual fatigue of the driver's eyes when observing images, avoid glare or ghosting caused by uneven mirror surface, and improve driving safety. In addition, the flat curved mirror 220 helps to achieve more accurate light path design, ensuring that the light can be projected into the driver's field of vision according to the predetermined path.

[0056] It should be noted that the curved mirror body 223, the fixed frame 224, the two rotating shafts 225 and the push rod 226 are all integrally injection molded. The division of the injection molded body 222 into multiple parts in this application is only to describe the structure of the injection molded body 222, and does not mean that the multiple parts are independent of each other.

[0057] For more information, please refer to Figure 2 and Figure 3 The curved mirror body 223 includes a reflective surface 2231 and a non-reflective surface 2232. In the thickness direction of the curved mirror body 223, the reflective surface 2231 is opposite to the non-reflective surface 2232, and the reflective surface 2231 is a concave surface. The non-reflective surface 2232 is a convex surface. The reflective surface 2231 can be covered by a reflective film 221. The reflective film 221 is used to reflect light. Among them, the concave surface refers to an arc-shaped concave curved surface.

[0058] The thickness of the fixed frame 224 is greater than the thickness of the curved mirror body 223 . The fixed frame 224 surrounds the periphery of the curved mirror body 223 , and the fixed frame 224 protrudes relative to the non-reflective surface 2232 .

[0059] The fixed frame 224 includes two first parts 2241 and two second parts 2242. The two first parts 2241 are arranged opposite to each other along the second direction, and the two first parts 2241 are respectively connected to the two long sides of the curved mirror body 223. The two second parts 2242 are arranged opposite to each other along the first direction, and the two second parts 2242 are respectively connected to the two wide sides of the curved mirror body 223, and the second part 2242 is connected between the two first parts 2241.

[0060] See also Figure 4 , Figure 4 yes Figure 3 The enlarged schematic diagram of the portion A of the curved mirror 220 is shown. The second portion 2242 includes a middle portion 2243 and two end portions 2244 , the middle portion 2243 is connected between the two end portions 2244 , and the thickness of the middle portion 2243 is greater than the thickness of the end portions 2244 .

[0061] Please refer to Figure 2 and Figure 4 The second part 2242 further includes an outer side surface 2245 and a transition surface 2246. The surfaces of the two end portions 2244 and the middle portion 2243 facing away from the curved mirror body 223 form the outer side surface 2245. The surfaces of the two end portions 2244 and the middle portion 2243 facing the reflecting surface 2231 form the transition surface 2246. The outer side surface 2245 is bent and connected to the transition surface 2246, and the side of the transition surface 2246 away from the outer side surface 2245 is connected to the edge of the reflecting surface 2231. The transition surface 2246 is staggered with the reflecting film 221 located on the surface of the reflecting surface 2231.

[0062] The two rotating shafts 225 are respectively connected to the sides of the middle portions 2243 of the two second parts 2242 away from the curved mirror body 223. Specifically, the rotating shaft 225 is connected to the outer side surface 2245 of the middle portion 2243.

[0063] In this embodiment, the rotating shaft 225 of the curved mirror 220 can make the curved mirror 220 rotate relative to the housing of the projection device. The rotation of the curved mirror 220 can be used to correct the aberrations caused by the optical machine. Rotating the curved mirror 220 can correct these aberrations to make the picture clearer and more uniform in color.

[0064] Since the stress on the rotating shaft 225 is concentrated during the rotation process, the middle portion 2243 of the second portion 2242 is thickened to prevent the stress of the rotating shaft 225 from being transferred to the second portion 2242, thereby preventing the second portion 2242 from being deformed and affecting the shape of the reflecting surface 2231 of the curved mirror body 223, thereby preventing the reflecting light path of the reflecting film 221 of the reflecting surface 2231 from being changed, thereby preventing the imaging distortion of the head-up display system 20.

[0065] In addition, the transition surface 2246 can transition between the rotating shaft 225 and the reflecting surface 2231. After the external force of the rotation of the rotating shaft 225 is transmitted to the second part 2242, after the external force is transmitted from the rotating shaft 225 to the reflecting surface 2231 through the transition surface 2246, the external force exerted on the reflecting surface 2231 has been attenuated. Therefore, the reflecting surface 2231 will not be deformed due to the external force exerted on the rotating shaft 225, thereby avoiding slight deformation of the reflecting surface 2231 and changing the reflecting light path of the reflecting film 221 on the reflecting surface 2231, which will cause imaging distortion of the head-up display system 20.

[0066] In some possible embodiments, please refer to Figure 3 and Figure 6 , Figure 6 yes Figure 3 The enlarged schematic diagram of the C part of the curved mirror 220 shown. The injection molded body 222 also includes a first fixed block 227. The first fixed block 227 includes a first support surface 2271 and a second support surface 2272, and the extension direction of the first support surface 2271 intersects with the extension direction of the second support surface 2272. The angle between the first support surface 2271 and the second support surface 2272 can be less than 180°. The first support surface 2271 is connected to the side of the middle part 2243 of the second part 2242 away from the rotation axis 225. The second support surface 2272 is connected to the edge area of ​​the non-reflective surface 2232.

[0067] In this embodiment, the first fixing block 227 can further strengthen the relative position of the second portion 2242 and the curved mirror body 223 , further enhance the structural strength of the second portion 2242 , and reduce deformation of the second portion 2242 due to the force of the rotating shaft 225 .

[0068] Exemplarily, the number of the first fixing blocks 227 may be ten. Among them, five first fixing blocks 227 are connected between a second portion 2242 and the non-reflective surface 2232. The five first fixing blocks 227 are respectively a first block 2273, a second block 2274, a third block 2275, a fourth block 2276 and a fifth block 2277. The first block 2273 is connected to the junction of one end 2244 and the middle portion 2243. The second block 2274 is connected to the junction of the other end 2244 and the middle portion 2243. The third block 2275, the fourth block 2276 and the fifth block 2277 are located between the first block 2273 and the second block 2274. Along the second direction, the first block 2273, the third block 2275, the fourth block 2276, the fifth block 2277 and the second block 2274 are arranged in sequence, wherein the distance between the third block 2275, the fourth block 2276 and the fifth block 2277 is smaller than the distance between the first block 2273 and the third block 2275 and the distance between the fifth block 2277 and the second block 2274.

[0069] The other five first fixing blocks 227 are connected between another second portion 2242 and the non-reflective surface 2232. The connection method of the other five first fixing blocks 227 can refer to the above description of the first block 2273, the second block 2274, the third block 2275, the fourth block 2276 and the fifth block 2277. This application will not repeat them here.

[0070] See also Figure 5 , Figure 5 yes Figure 3 FIG. 2 is an enlarged schematic diagram of the portion B of the curved mirror 220 . The push rod 226 includes a connecting portion 2261 and a guiding portion 2262 . The connecting portion 2261 is used to connect with a first portion 2241 . The guiding portion 2262 is connected to the connecting portion 2261 .

[0071] In this embodiment, the guide portion 2262 can be connected to the moving motor of the projection device 22. The push rod 226 can move the curved mirror 220 relative to the housing of the projection device. By moving the curved mirror 220, the projection device 22 can adapt to different projection environments and requirements. The position and size of the projected image can be adjusted by moving the curved mirror 220 to achieve the best viewing effect.

[0072] Specifically, the connecting portion 2261 includes a first connecting segment 2263 and a second connecting segment 2264. The first connecting segment 2263 and the second connecting segment 2264 are connected in a bent manner. The first connecting segment 2263 is connected to the side of the first portion 2241 facing the non-reflective surface 2232, and the second connecting segment 2264 is connected to the side of the first portion 2241 facing away from the curved mirror body 223. The guiding portion 2262 is connected to the side of the second connecting segment 2264 facing away from the first portion 2241.

[0073] In this embodiment, the push rod 226 is used to accurately adjust the position of the curved mirror 220 to ensure that the image projected by the head-up display system 20 can be accurately aligned with the driver's field of vision. By adjusting the push rod 226, the position of the curved mirror 220 can be fine-tuned to adapt to different drivers' sitting postures and vision requirements.

[0074] For example, please refer to Figure 7 and Figure 8 , Figure 7 yes Figure 3 A schematic structural diagram of the curved mirror 220 at another angle is shown. Figure 8 yes Figure 7 The enlarged schematic diagram of the D portion of the curved mirror 220 is shown. The second connecting section 2264 is concavely provided with a material groove 2266 , and the material groove 2266 is concavely provided from the second connecting section 2264 toward the surface of the reflective surface 2231 .

[0075] In this embodiment, the material groove 2266 can reduce the volume of the second connecting section 2264, avoid the second connecting section 2264 from being deformed too much when cooling and shrinking after demolding, prevent the deformation of the push rod 226 from affecting the structural stability of the first part 2241, and further avoid the deformation shrinkage force from being transmitted to the curved mirror body 223, thereby ensuring that the shape of the reflecting surface 2231 of the curved mirror body 223 is not affected by the injection molding structure such as the fixed frame 224.

[0076] In addition, the material groove 2266 can also reduce the connection area between the second connecting section 2264 and the first part 2241, thereby reducing the force transmitted from the push rod 226 to the first part 2241 and preventing the push rod 226 from affecting the shape of the fixed frame 224 and the curved mirror body 223.

[0077] For some possible embodiments, please refer to Figure 5 The surface of the first connecting section 2263 facing the curved mirror body 223 is flush with the surface of the first portion 2241 facing the curved mirror body 223. The injection molding body 222 further includes a second fixing block 228, and the second fixing block 228 includes a third supporting surface 2281 and a fourth supporting surface 2282. The extension directions of the third supporting surface 2281 and the fourth supporting surface 2282 intersect, and the third supporting surface 2281 is connected to the edge area of ​​the non-reflective surface 2232, and the fourth supporting surface 2282 is connected to the surface of the first connecting section 2263 facing the curved mirror body 223 and the surface of the first portion 2241 facing the curved mirror body 223.

[0078] In this embodiment, the second fixing block 228 can make the relative position of the first part 2241 and the curved mirror body 223 more stable, and prevent the relative position of the first part 2241 and the curved mirror body 223 from changing when being subjected to the force of the push rod 226, so as to make the overall structure of the curved mirror 220 more stable, and prevent the curved mirror 220 from being slightly deformed or vibrated and affecting the stability of the light reflected by the curved mirror 220.

[0079] Exemplarily, the number of the second fixing blocks 228 may be five. The five second fixing blocks 228 are respectively the sixth block 2283, the seventh block 2284, the eighth block 2285, the ninth block 2286 and the tenth block 2287. The sixth block 2283 is connected to one end of the first connecting portion 2261. The seventh block 2284 is connected to the other end of the first connecting portion 2261. The eighth block 2285, the ninth block 2286 and the tenth block 2287 are located between the sixth block 2283 and the seventh block 2284. Along the first direction, the sixth block 2283, the eighth block 2285, the ninth block 2286, the tenth block 2287 and the seventh block 2284 are arranged in sequence, wherein the spacing between the eighth block 2285, the ninth block 2286 and the tenth block 2287 is smaller than the spacing between the sixth block 2283 and the eighth block 2285 and the spacing between the tenth block 2287 and the seventh block 2284.

[0080] The above are exemplary embodiments of the present application. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made thereto without departing from the principles of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A curved mirror, characterized in that: The curved mirror comprises an injection-molded body and a reflective film; The injection molded body comprises a curved mirror body, a fixed frame and two rotating shafts, wherein the curved mirror body, the fixed frame and the two rotating shafts are integrally injection molded, wherein the curved mirror body comprises a reflective surface and a non-reflective surface, wherein in the thickness direction of the curved mirror body, the reflective surface is opposite to the non-reflective surface, and the reflective surface is a concave surface; The fixed frame is connected to the periphery of the curved mirror body in a surrounding manner. In the thickness direction of the injection molded body, the thickness of the fixed frame is greater than the thickness of the curved mirror body. The fixed frame protrudes relative to the non-reflective surface. In a first direction, the two rotating shafts are respectively connected to opposite sides of the fixed frame, and the two rotating shafts are coaxially arranged, wherein the first direction is the length direction of the injection molded body; The reflective film covers the reflective surface.

2. The curved mirror according to claim 1, characterized in that: The fixed frame includes two first parts and two second parts, the two first parts are arranged opposite to each other along a second direction, and the two first parts are respectively connected to two long sides of the curved mirror body, wherein the second direction is the width direction of the injection molded body; The two second parts are arranged opposite to each other along the first direction, the two second parts are respectively connected to the two wide sides of the curved mirror body, the second part is connected between the two first parts, the second part includes a middle part and two end parts, the middle part is connected between the two end parts, the thickness of the middle part is greater than the thickness of the end parts, and the two rotating shafts are respectively connected to the side of the middle part of the two second parts away from the curved mirror body.

3. The curved mirror according to claim 2, characterized in that: The injection molded body also includes a first fixed block, which includes a first supporting surface and a second supporting surface. The extension direction of the first supporting surface intersects with the extension direction of the second supporting surface. The first supporting surface is connected to a side of the middle portion away from the rotating shaft, and the second supporting surface is connected to the non-reflective surface.

4. The curved mirror according to claim 3, characterized in that: The second part includes an outer side surface and a transition surface, the transition surface faces the reflective surface, the outer side surface is away from the curved mirror body, the rotating shaft is connected to the outer side surface, the transition surface is connected between the reflective surface and the outer side surface, and the reflective film and the transition surface are completely offset.

5. The curved mirror according to any one of claims 2 to 4, characterized in that: The injection molded body also includes a push rod, which includes a first connecting section, a second connecting section and a guide portion. The first connecting section and the second connecting section are bent and connected. The first connecting section is connected to the side of the first portion facing the non-reflective surface, the second connecting section is connected to the side of the first portion facing away from the curved mirror body, and the guide portion is connected to the side of the second connecting section facing away from the first portion.

6. The curved mirror according to claim 5, characterized in that: The second connecting section is concavely provided with a material cutting groove, and the material cutting groove is concavely arranged on the surface of the second connecting section facing the reflecting surface.

7. The curved mirror according to claim 6, characterized in that: The surface of the first connecting section facing the curved mirror body is flush with the surface of the first part facing the curved mirror body; The injection molded body also includes a second fixed block, the second fixed block includes a third supporting surface and a fourth supporting surface, the third supporting surface intersects with the extension direction of the fourth supporting surface, the third supporting surface is connected to the non-reflective surface, and the fourth supporting surface is connected to the surface of the first connecting section facing the curved mirror body, and the surface of the first part facing the curved mirror body.

8. A projection device, characterized in that: It comprises an optical machine, a shell and a curved mirror as described in any one of claims 1 to 7, wherein the two rotating shafts of the curved mirror are rotatably connected to the shell, the optical machine is used to emit image light, and the image light is transmitted in the optical path between the optical machine and the curved mirror and reflected on the reflective film of the curved mirror.

9. A head-up display system, characterized in that: The head-up display system comprises an imaging device and the projection device as claimed in claim 8, and the imaging device is capable of receiving light emitted by the projection device to form an image.

10. A vehicle, characterized in that: It comprises a vehicle body and the head-up display system as claimed in claim 9, wherein the head-up display system is installed in the vehicle body.

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