Vehicle-mounted projection equipment and vehicle

Abstract

The embodiment of the utility model relates to the technical field of vehicle-mounted projection equipment, and particularly discloses vehicle-mounted projection equipment. The vehicle-mounted projection equipment comprises a shell, a lens mechanism and an elastic piece. The shell is provided with a first mounting part, a second mounting part and a first connecting part, the first mounting part and the second mounting part are oppositely arranged on the two sides of the shell, and the first connecting part is close to the first mounting part. The lens mechanism comprises a lens module, a rotating part and a second connecting part, the rotating part is provided with a first end and a second end which are oppositely arranged on the two sides of the lens module, the first end is rotationally connected to the first mounting part, the second end is rotationally connected to the second mounting part, and the second connecting part is arranged on the lens module close to the first end. The elastic piece is connected between the first connecting part and the second connecting part, and the elastic piece is used for enabling the end part of the first end to abut against the first mounting part. By means of the structure, the first end abuts against the first installation part all the time through the elasticity of the elastic piece, and therefore errors generated in the manufacturing and installation process are reduced.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of vehicle-mounted projection equipment, in particular to a vehicle-mounted projection equipment and a vehicle. BACKGROUND

[0002] The vehicle-mounted projection equipment (HUD "Head Up Display") is also called a projector, which is a device capable of projecting images or videos onto the windshield of a vehicle, and can display various vehicle information, road condition information and the like.

[0003] The inventor found that, at present, the vehicle-mounted projection equipment comprises a shell and a lens mechanism, the shell is provided with a mounting clamping groove, the mounting clamping groove is integrally formed when the shell is formed, and the lens mechanism is mounted in the mounting clamping groove. However, this structure will interfere with the imaging effect of the lens mechanism due to errors in the process of production and installation, and is inconvenient to use. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the present application provides a vehicle-mounted projection equipment, which can improve the current situation that the structure will interfere with the imaging effect of the lens mechanism due to errors in the process of production and installation, and is inconvenient to use.

[0005] To solve the above technical problems, one technical scheme adopted by the present application is to provide a vehicle-mounted projection equipment. The vehicle-mounted projection equipment comprises a shell, a lens mechanism and an elastic piece. The shell is provided with a first mounting part, a second mounting part and a first connecting part, the first mounting part and the second mounting part are oppositely arranged on two sides of the shell, and the first connecting part is arranged close to the first mounting part. The lens mechanism comprises a lens module, a rotating piece and a second connecting part, the rotating piece has a first end and a second end, the first end and the second end are oppositely arranged on two sides of the lens module, the first end is rotationally connected to the first mounting part, the second end is rotationally connected to the second mounting part, and the second connecting part is arranged on the lens module close to the first end. The elastic piece is connected between the first connecting part and the second connecting part, and the elastic piece is used for abutting the end of the first end to the first mounting part.

[0006] In one or more embodiments, the shell is provided with a receiving cavity for receiving the lens mechanism. The first mounting part is arranged to protrude from the shell towards the receiving cavity, and a first mounting groove is arranged in a recess at one end of the receiving cavity, and the first end is rotationally inserted into the first mounting groove.

[0007] In one or more embodiments, the inner contour of the groove bottom of the first mounting groove is arranged in a circular truncated cone shape or a circular conical shape, and the outer contour of the first end is arranged in a circular truncated cone shape

[0008] In one or more embodiments, the housing is provided with a receiving cavity for receiving the lens mechanism. The rotating member further has a rotating disc, the axis of the rotating disc coincides with the axis of the second end, the rotating disc is provided on the second end, and the rotating disc is located at the end of the second end away from the lens module. The second mounting portion is protrudingly arranged towards the receiving cavity, the second mounting portion is provided with a second mounting groove, the second mounting groove is annular, and the rotating disc is rotationally connected to the second mounting groove.

[0009] In one or more embodiments, the second mounting groove has a first portion, the first portion is at least partially embedded in the second mounting portion, the first portion is provided with a limiting groove, the length of the slot of the limiting groove is less than the diameter of the rotating disc, and the limiting groove is used to limit the movement of the rotating disc perpendicular to the axis of the rotating disc.

[0010] In one or more embodiments, the second mounting groove further has a second portion, the second portion is away from the first mounting portion relative to the first portion, the second portion is open and perpendicular to the axis of the rotating disc, the length of the opening of the second portion is greater than or equal to the diameter of the rotating disc; and the length of the slot of the limiting groove is greater than the diameter of the second end and less than one half of the diameter of the rotating disc.

[0011] In one or more embodiments, the first connecting portion and the second connecting portion are both provided as hooks, and the two ends of the elastic member are respectively clamped to the first connecting portion and the second connecting portion.

[0012] In one or more embodiments, the lens mechanism comprises a first fixing portion and a second fixing portion, the first fixing portion is mounted on the end of the lens module close to the first end, and the second fixing portion is mounted on the end of the lens module close to the second end.

[0013] In one or more embodiments, the vehicle-mounted projection device further comprises a second limiting portion, the second limiting portion is located in the receiving cavity and / or the first mounting portion and / or the second mounting portion, and the second limiting portion is used to fix the current rotation angle of the lens module.

[0014] To solve the above technical problems, another technical solution adopted by the present application is to further provide a vehicle comprising the vehicle-mounted projection device as described above.

[0015] The beneficial effect of the embodiment of the present application is that, different from the prior art, the embodiment of the present application provides a vehicle-mounted projection device. The vehicle-mounted projection device comprises a shell, a lens mechanism and an elastic member. The shell is provided with a first mounting portion, a second mounting portion and a first connecting portion. The first mounting portion and the second mounting portion are oppositely arranged on two sides of the shell. The first connecting portion is arranged close to the first mounting portion. The lens mechanism comprises a lens module, a rotating member and a second connecting portion. The rotating member has a first end and a second end. The first end and the second end are oppositely arranged on two sides of the lens module. The first end is rotationally connected to the first mounting portion. The second end is rotationally connected to the second mounting portion. The second connecting portion is arranged on the lens module close to the first end. The elastic member is connected between the first connecting portion and the second connecting portion. The elastic member is used to abut the end of the first end against the first mounting portion. Through the above structure, the setting position of the lens module between the first mounting portion and the second mounting portion is adjusted by the elasticity of the elastic member, so that the first end is always abutted against the first mounting portion, thereby reducing the error generated in the manufacturing and installation process. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by the drawings without creative labor for those skilled in the art.

[0017] Figure 1 is a perspective view of the vehicle-mounted projection device provided by one of the embodiments of the present application;

[0018] Figure 2 is an exploded view of the vehicle-mounted projection device provided by one of the embodiments of the present application;

[0019] Figure 3 is a perspective view of the shell provided by one of the embodiments of the present application;

[0020] Figure 4 is a partial perspective view of the shell provided by one of the embodiments of the present application.

[0021] The reference signs of the vehicle-mounted projection device 1000 are as follows:

[0022] Housing 100 Lens mechanism 200 First mounting portion 110 Lens module 210 First mounting slot 111 Rotary member 220 Second mounting portion 120 First end 221 Second mounting slot 121 Second end 222 First portion 1211 Rotary disc 223 Limiting slot 1211a Second connecting portion 230 Second portion 1212 First fixing portion 240 First connecting portion 130 Second fixing portion 250 Receiving cavity 140 Elastic member 300 DETAILED DESCRIPTION

[0023] For the convenience of understanding the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "vertical", "horizontal", "left", "right", and similar expressions used in the specification are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used in the specification are the same as those commonly understood by those skilled in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0025] At present, the vehicle-mounted projection device includes a shell, a projection light machine and a lens mechanism. The projection light machine projects image light to the lens mechanism. The lens mechanism deflects and modulates the light and reflects the image light to the position of the automobile windshield, window, etc. to display the picture. The shell is provided with a mounting clamping groove which is integrally formed when the shell is formed. The lens mechanism is mounted in the mounting clamping groove. However, such structure will interfere with the imaging effect of the lens mechanism due to errors during production and installation. For example, when the lens mechanism is mounted in the mounting clamping groove, the two ends of the lens structure cannot be abutted in place to form an error. Such error is unpredictable at the beginning of design, which is easy to cause the lens angle of the lens mechanism to be unstable and inconvenient to use.

[0026] Based on this, the present application provides a vehicle-mounted projection device 1000, please refer to Figure 1 and Figure 2The vehicle-mounted projection device 1000 comprises a housing 100, a lens mechanism 200 and an elastic member 300. The housing 100 is provided with a first mounting portion 110, a second mounting portion 120 and a first connecting portion 130. The first mounting portion 110 and the second mounting portion 120 are oppositely arranged on two sides of the housing 100, and the first connecting portion 130 is arranged close to the first mounting portion 110. The lens mechanism 200 comprises a lens module 210, a rotating member 220 and a second connecting portion 230. The rotating member 220 has a first end 221 and a second end 222, which are oppositely arranged on two sides of the lens module 210. The first end 221 is rotationally connected to the first mounting portion 110, and the second end 222 is rotationally connected to the second mounting portion 120. The second connecting portion 230 is arranged on the lens module 210 close to the first end 221. The elastic member 300 is connected between the first connecting portion 130 and the second connecting portion 230, and is used to abut the end of the first end 221 against the first mounting portion 110.

[0027] It should be noted that, when the lens mechanism 200 is mounted on the housing 100, the second end 222 is inserted into the second mounting portion 120, and the second end 222 can rotate relative to the second mounting portion 120 and can also slide a small amount relative to the second mounting portion 120. The first end 221 is inserted into the first mounting portion 110, and the first end 221 can rotate relative to the first mounting portion 110. In addition, the first end 221 is abutted against the first mounting portion 110 under the elastic action of the elastic member 300, so that the second end 222 is relatively stationary with the second mounting portion 120 in the axial direction of the second end 222. And the elastic member 300 makes the first end 221 and the first mounting portion 110 have a static friction force, so as to keep the lens module 210 relatively stationary with the housing 100 after the angle is adjusted.

[0028] Optionally, the axis of the first end 221 and the axis of the second end 222 are collinear. When the lens module 210 does not need to rotate a large angle in actual use, the distance between the axis of the first end 221 and the bottom of the accommodating cavity 140 is greater than the distance between the axis of the first end 221 and the bottom of the lens module 210. Or, when the lens module 210 needs to rotate a full circle in actual use, the distance between the axis of the first end 221 and the bottom of the accommodating cavity 140 is less than the distance between the axis of the first end 221 and the bottom of the lens module 210.

[0029] Through the above structure, the vehicle-mounted projection device 1000 provided by the embodiment of the present application adjusts the setting position of the lens module 210 between the first mounting portion 110 and the second mounting portion 120 by using the elasticity of the elastic member 300, so that the first end 221 is always abutted against the first mounting portion 110, thereby reducing the error generated in the manufacturing and installation process.

[0030] For the above-mentioned housing 100, please refer to Figure 1 and Figure 2 The housing 100 is provided with a receiving cavity 140 for accommodating the lens mechanism 200. It can be understood that the housing 100 is provided in a cuboid shape, and the inner contour of the receiving cavity 140 can be provided in a geometrically similar shape to the housing 100.

[0031] In some embodiments, please refer to Figure 3 and in combination with other drawings, the first mounting portion 110 is provided to protrude from the housing 100 towards the receiving cavity 140, and the first mounting portion 110 is provided with a first mounting groove 111 at one end of the receiving cavity 140, and the first end 221 is rotatably inserted into the first mounting groove 111. It can be understood that the first mounting portion 110 is provided to protrude towards the receiving cavity 140 in a cylindrical shape, and the inner contour of the first mounting groove 111 is geometrically similar to the outer contour of the first end 221, thereby increasing the contact area between the first end 221 and the first mounting groove 111, so that the rotating member 220 can extend into the first mounting portion 110, thereby improving the rotation stability of the rotating member 220.

[0032] Further, please refer to Figure 3 and in combination with other drawings, the inner contour of the groove bottom of the first mounting groove 111 is provided in a circular truncated cone shape or a circular cone shape, and the outer contour of the first end 221 is provided in a circular truncated cone shape. Thus, the contact area between the first end 221 and the first mounting groove 111 is further increased, and the circular contact surface between the first end 221 and the first mounting groove 111 is optimized to a combination of a fan-shaped contact surface and a circular contact surface, thereby increasing the static friction between the first end 221 and the first mounting groove 111, and improving the stability of the lens module 210 after adjusting the angle.

[0033] In some embodiments, please refer to Figure 1 and Figure 2In combination with other figures, the rotating member 220 further has a rotating disc 223, the axis of the rotating disc 223 coincides with the axis of the second end 222, the rotating disc 223 is arranged on the second end 222, and the rotating disc 223 is located at the end of the second end 222 away from the lens module 210. Optionally, the diameter of the rotating disc 223 is greater than the diameter of the second end 222. The second mounting portion 120 is arranged protruding towards the accommodation cavity 140, the second mounting portion 120 is provided with a second mounting groove 121, the second mounting groove 121 is annular, and the rotating disc 223 is rotationally connected to the second mounting groove 121. It can be understood that, by arranging the rotating disc 223, the contact area between the second mounting groove 121 and the second end 222 is reduced, so that the friction between the second end 222 and the second mounting groove 121 is reduced, and then the elastic member 300 facilitates the abutment of the first end 221 to the first mounting groove 111. It still needs to be explained that at least part of the second mounting portion 120 protrudes from the accommodation cavity 140 as a table body.

[0034] Further, please refer to Figure 4 In combination with other figures, the second mounting groove 121 has a first part 1211, the first part 1211 is at least partially embedded in the second mounting portion 120, the first part 1211 is provided with a limiting groove 1211a, the limiting groove 1211a is perpendicular to the axial direction of the rotating disc 223, the length of the slot of the limiting groove 1211a is less than the diameter of the rotating disc 223, and the limiting groove 1211a is used to limit the movement of the rotating disc 223 perpendicular to the axial direction of the rotating disc 223. It can be understood that, by locating the rotating disc 223 in the limiting groove 1211a, the movement of the rotating disc 223 perpendicular to the axial direction is limited, and the situation that the rotating disc 223 comes out of the second mounting groove 121 is reduced; in some embodiments, the elastic member 300 pulls the first end 221 towards the direction of the first mounting portion 110, and at the same time, the second end 222 is always located in the limiting groove 1211a, so as to prevent the rotating disc 223 from coming out of the limiting groove 1211a. It needs to be explained that, the length of the slot of the limiting groove 1211a is the distance between the two ends of the open area of the limiting groove 1211a observed perpendicular to the axial direction of the second end 222, that is, the diameter of the rotating disc 223 is greater than the length of the slot of the limiting groove 1211a, so as to ensure that the rotating disc 223 rotates in the limiting groove 1211a without coming out, thereby improving the rotating stability of the rotating disc 223.

[0035] Further, the second installation groove 121 further has a second part 1212, the second part 1212 is away from the first installation part 110 relative to the first part 1211, the second part 1212 is open, perpendicular to the axial direction of the rotating disc 223, the length of the opening of the second part 1212 is greater than or equal to the diameter of the rotating disc 223. Similarly, the "length of the opening of the second part 1212" is the distance between the two ends of the open area of the second part 1212 observed perpendicular to the axial direction of the second end 222. By setting the second part 1212, when installing, the rotating disc 223 can be placed in the second part 1212 without causing assembly interference between the rotating disc 223 and the second part 1212. At the same time, the second end 222 is placed in the limiting groove 1211a through the slot of the limiting groove 1211a, and the lens structure 200 is pulled, so that the rotating disc 223 located in the second part 1212 is moved into the limiting groove 1211a, thereby enabling the limiting groove 1211a to limit the movement of the rotating disc 223. In addition, the length of the slot of the limiting groove 1211a is greater than the diameter of the second end 222 and less than one-half of the diameter of the rotating disc 223. Thus, the rotation of the rotating disc 223 in the limiting groove 1211a is more stable and less likely to come out. That is, the above structure can facilitate the installation of the second end 222 and the rotating disc 223 with the second installation groove 121, thereby simplifying the installation process and improving the installation efficiency of the equipment. It can be understood that the profiles of the above-mentioned first part 1211, limiting groove 1211a and second part 1212 in contact with the rotating disc 223 are all set to be circular arcs, thereby preventing the relative rotation or sliding between the rotating disc 223 and the three from causing interference, and improving the movability of the rotating disc 223 in the limiting groove 1211a.

[0036] In some optional embodiments, the housing 100 is further provided with a first limiting part (not shown in the figure), which is located in the second installation groove 121. The first limiting part, together with the elastic member 300, limits the axial movement of the lens module 210, thereby preventing the second end 222 from coming out of the second installation groove 121.

[0037] In some embodiments, please refer to Figure 2 and Figure 3And in combination with other figures, the first connecting part 130 and the second connecting part 230 are both provided as hooks, and the two ends of the elastic member 300 are respectively clamped in the first connecting part 130 and the second connecting part 230. It can be understood that the elastic member 300 is a tension spring or a compression spring, when the elastic member 300 is provided as a tension spring, the projections of the first connecting part 130 and the second connecting part 230 on the same plane do not coincide with each other, and the elastic member 300 is in a tensile state between the first connecting part 130 and the second connecting part 230; when the elastic member 300 is provided as a compression spring, the projections of the first connecting part 130 and the second connecting part 230 on the same plane coincide, and the elastic member 300 is in a compressed state between the first connecting part 130 and the second connecting part 230.

[0038] For the above-mentioned lens module 210, the lens module 210 can be a combination of a lens and a mounting frame (not shown in the figure), so that the mounting frame can serve as the mounting basis of the lens and the above-mentioned rotating part 220 and the second connecting part 230. The mounting frame can be provided around the lens, and the rotating part 220 can be a segmented structure extending from the mounting frame or an integrated shaft body inserted into the mounting frame, as long as the first end 221 and the second end 222 are extended relative to the mounting frame.

[0039] In some embodiments, referring to Figure 2 And in combination with other figures, the lens mechanism 200 includes a first fixed part 240 and a second fixed part 250, the first fixed part 240 is mounted on the end of the lens module 210 close to the first end 221, and the second fixed part 250 is mounted on the end of the lens module 210 close to the second end 222. The first fixed part 240 is provided protruding relative to the lens module 210, so as to increase the available area of the second connecting part 230, and the second fixed part 250 is provided protruding relative to the lens module 210, so as to increase the available area of the second end 222. The first fixed part 240 and the second fixed part 250 can be directly mounted on the above-mentioned lens or mounting frame, and the first fixed part 240 and the second fixed part 250 are further provided with reinforcing ribs, which can improve the structural strength on the one hand and reduce the weight of the lens mechanism 200 on the other hand, so as to facilitate fixing the rotation angle of the current lens through the static friction force between the first end 221 and the first mounting groove 111, and reduce the possibility of lens deflection due to insufficient static friction force.

[0040] In some embodiments, the vehicle-mounted projection device 1000 further comprises a second limiting part (not shown in the figure) located in the accommodating cavity 140 and / or the first mounting part 110 and / or the second mounting part 120, which is used to fix the current rotation angle of the lens module 210. When the second limiting part is arranged in the accommodating cavity 140, it can be a sliding rail type abutting block, which directly abuts the lens to prevent the lens from deflecting, and the design of the sliding rail facilitates the adjustment of the rotation angle of the lens. When the lens needs to be rotated, the abutting block is not in contact with the lens; when the lens needs to be fixed, the abutting block is separated from the lens. When the second limiting part is arranged in the first mounting part 110 and / or the second mounting part 120, it can be any structure that limits its rotation. By arranging the above-mentioned second limiting part, the fixation of the lens after adjusting the angle is further assisted, and the possibility of lens deflection due to insufficient static friction is reduced.

[0041] In summary, the present application also provides a vehicle, which comprises the above-mentioned vehicle-mounted projection device 1000, and at least one of a car, an electric vehicle, and a driverless vehicle (a manned passenger type). Since the above-mentioned vehicle-mounted projection device 1000 can improve the current situation that the structure in the production and installation process will interfere with the imaging effect of the lens mechanism due to errors, and is inconvenient to use. Therefore, the vehicle can also improve such a situation.

[0042] The present application aims to provide a vehicle-mounted projection device 1000, which comprises a shell 100, a lens mechanism 200, and an elastic member 300. The shell 100 is provided with a first mounting part 110, a second mounting part 120, and a first connecting part 130. The first mounting part 110 and the second mounting part 120 are oppositely arranged on both sides of the shell 100, and the first connecting part 130 is arranged close to the first mounting part 110. The lens mechanism 200 comprises a lens module 210, a rotating member 220, and a second connecting part 230. The rotating member 220 has a first end 221 and a second end 222, which are oppositely arranged on both sides of the lens module 210. The first end 221 is rotationally connected to the first mounting part 110, and the second end 222 is rotationally connected to the second mounting part 120. The second connecting part 230 is arranged close to the first end 221 of the lens module 210. The elastic member 300 is connected between the first connecting part 130 and the second connecting part 230, and is used to abut the end of the first end 221 to the first mounting part 110. Through the above structure, the setting position of the lens module 210 between the first mounting part 110 and the second mounting part 120 is adjusted by the elasticity of the elastic member 300, so that the first end 221 is always abutted to the first mounting part 110, thereby reducing the errors generated in the manufacturing and installation process.

[0043] Based on the same inventive concept, the application further provides a vehicle comprising the vehicle-mounted projection device 1000 described above, and the structure and functions of the vehicle-mounted projection device 1000 can be referred to the above embodiments, which will not be repeated here.

[0044] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application, but the present application can be implemented in many different forms, and is not limited to the embodiments described in the specification. The embodiments are not additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Furthermore, the above technical features continue to be combined with each other, forming various embodiments not listed above, which are all considered to be within the scope of the present application. Furthermore, for those skilled in the art, the above description can be improved or transformed, and all these improvements and transformations should be within the scope of protection of the appended claims of the present application.

Claims

1. A vehicle-mounted projection device, characterized by comprising: The application relates to a vehicle-mounted projection device. The vehicle-mounted projection device comprises a shell, a lens mechanism and an elastic member. The shell is provided with a first mounting portion, a second mounting portion and a first connecting portion. The first mounting portion and the second mounting portion are oppositely arranged on two sides of the shell.

2. The vehicle-mounted projection device according to claim 1, characterized by, The first connecting portion is arranged close to the first mounting portion. The lens mechanism comprises a lens module, a rotating member and a second connecting portion.

3. The vehicle-mounted projection device according to claim 2, characterized by, The rotating member has a first end and a second end.

4. The vehicle-mounted projection device according to claim 1, characterized by, The first end and the second end are oppositely arranged on two sides of the lens module. The first end is rotatably connected to the first mounting portion. The second end is rotatably connected to the second mounting portion.

5. The vehicle-mounted projection device according to claim 4, characterized by, The second connecting portion is arranged on the lens module close to the first end.

6. The vehicle-mounted projection device according to claim 5, characterized by, The elastic member is connected between the first connecting portion and the second connecting portion. The elastic member is used for abutting the end of the first end to the first mounting portion.

7. The vehicle-mounted projection device according to any one of claims 1 to 6, characterized by, The shell is provided with a receiving cavity for receiving the lens mechanism.

8. The vehicle-mounted projection device according to any one of claims 1 to 6, characterized by, The first mounting portion is arranged to protrude from the shell towards the receiving cavity.

9. The vehicle-mounted projection device according to any one of claims 1 to 6, characterized by, One end of the first mounting portion in the receiving cavity is concavely arranged with a first mounting groove. The first end is rotatably inserted into the first mounting groove. The inner contour of the groove bottom of the first mounting groove is arranged in a circular truncated cone shape or a circular cone shape. The outer contour of the first end is arranged in a circular truncated cone shape. The shell is provided with a receiving cavity for receiving the lens mechanism. The rotating member further has a rotating disc. The axis of the rotating disc coincides with the axis of the second end. The rotating disc is arranged on the second end. The second end is arranged on the second end away from the lens module. The second mounting portion is arranged to protrude into the receiving cavity. The second mounting portion is provided with a second mounting groove. The second mounting groove is annular. The rotating disc is rotatably connected to the second mounting groove. The second mounting groove has a first part. The first part is at least partially embedded in the second mounting portion. The first part is provided with a limiting groove. The limiting groove is perpendicular to the axial direction of the rotating disc. The length of the slot opening of the limiting groove is less than the diameter of the rotating disc. The limiting groove is used for limiting the movement of the rotating disc perpendicular to the axial direction of the rotating disc. The second mounting groove further has a second part. The second part is away from the first mounting portion relative to the first part. The second part is arranged to be open. The length of the opening of the second part is greater than or equal to the diameter of the rotating disc. The length of the slot opening of the limiting groove is greater than the diameter of the second end and less than one half of the diameter of the rotating disc. The first connecting portion and the second connecting portion are both arranged as hooks. The two ends of the elastic member are respectively clamped to the first connecting portion and the second connecting portion. The lens mechanism comprises a first fixing portion and a second fixing portion. The first fixing portion is arranged on the lens module close to the end of the first end. The second fixing portion is arranged on the lens module close to the end of the second end. The vehicle-mounted projection device further comprises a second limiting portion. The second limiting portion is arranged on the receiving cavity and / or the first mounting portion and / or the second mounting portion. The second limiting portion is used for fixing the current rotation angle of the lens module.

10. A vehicle, characterized by The vehicle-mounted projection device according to any one of claims 1 to 9.

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