Embedded vehicle-mounted light field display

Abstract

The utility model belongs to the field of light field screens, and provides an embedded vehicle-mounted light field display, which comprises a light field screen assembly rotatably arranged in an accommodating cavity and provided with a light field screen capable of being switched among an initial position, an upper rotation limit position and a lower rotation limit position of a central panel, the rotation center of the light field screen is located in the middle of the two sides; and the transmission assembly is connected to the central panel, and the driving end of the transmission assembly is movably meshed with the light field screen assembly so as to drive the light field screen to rotate relative to the central panel. Compared with the prior art, the utility model has the advantages that the rotating center of the light field screen is arranged at the middle positions of the two sides, so that the light field screen can be positioned in the accommodating cavity when switched to different positions, the overall aesthetic property is ensured, and the position switching of the light field screen is not limited by space and application scenes any more; the occupied space is saved, meanwhile, installation and use of a customer are facilitated, and the use experience of the customer is improved to a great extent.

Description

Technical Field

[0001] The utility model belongs to the field of light field screens, and in particular relates to an embedded vehicle-mounted light field display. Background Art

[0002] With the development of automobile intelligence, in-vehicle display systems have become an indispensable part of modern vehicles, not only providing entertainment and information functions, but also gradually becoming a key component to enhance driving safety and comfort. In recent years, light field display technology has attracted much attention because it can provide realistic three-dimensional images and reduce visual fatigue caused by long-term viewing. Especially in high-end vehicles, the application of light field screens is growing rapidly.

[0003] At present, most of the light field screens on the market adopt a flip-type installation method. During the installation of the flip-type light field screen, it is necessary to consider the space it needs to occupy during the flipping process. Therefore, it is often necessary to reserve enough space for the light field screen to flip, which greatly limits its space and application scenarios, and thus cannot achieve the best viewing effect. It is not only not conducive to the customer's installation and use, but also affects the customer's user experience. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an embedded vehicle-mounted light field display.

[0005] The utility model solves the technical problem by adopting a technical solution of providing an embedded vehicle-mounted light field display, which is used to be installed on a central panel with a receiving cavity, and comprises: a light field screen component, which is rotatably arranged in the receiving cavity, and the light field screen component has a light field screen that can be switched between an initial position, an upper rotation limit position and a lower rotation limit position of the central panel, and the rotation center of the light field screen is located at the middle position of both sides thereof;

[0006] A transmission assembly connected to the central panel, wherein a driving end of the transmission assembly is movably engaged with the light field screen assembly to drive the light field screen to rotate relative to the central panel;

[0007] When the light field screen is in the initial position, the screen of the light field screen is located at the opening end of the accommodating cavity, so that the light field screen can be retracted into the accommodating cavity and be flush with the surface of the central panel;

[0008] When the transmission assembly drives the light field screen to switch from the initial position to the upper rotation limit position or the lower rotation limit position, the light field screen can rotate relative to the accommodating cavity around its rotation center, so that the bottom end or the top end of the light field screen can extend out of the accommodating cavity to adjust the projection angle of the light field screen.

[0009] In the above-mentioned embedded vehicle-mounted light field display, the light field screen assembly includes a rotating shaft, which passes through the middle positions of both sides of the light field screen, and one end of the rotating shaft is movably connected to the central panel, and the other end is movably engaged with the transmission assembly.

[0010] In the above-mentioned embedded vehicle-mounted light field display, the transmission component includes:

[0011] A driving member, disposed on the central panel, wherein a driving end of the driving member is coaxially connected with a worm;

[0012] A worm wheel, a transmission gear is provided at the end of the rotating shaft extending out of the central panel, and the transmission gear and the worm are both movably engaged with the worm wheel, so that when the driving member is driven, the light field screen can be driven by the rotating shaft to switch between the initial position, the upper rotation limit position and the lower rotation limit position.

[0013] In the above-mentioned embedded vehicle-mounted light field display, the central panel is connected to a shaft pin cover plate, a limiting hole is arranged on the shaft pin cover plate, and the end of the rotating shaft away from the transmission assembly is rotatably arranged in the limiting hole.

[0014] In the above-mentioned embedded vehicle-mounted light field display, the light field screen assembly further includes a first bearing disposed in the limiting hole, and an inner ring of the first bearing is interference fit with the rotating shaft.

[0015] In the above-mentioned embedded vehicle-mounted light field display, a gasket and a spring buckle are also provided on the rotating shaft, the gasket is pressed against the side wall of the shaft pin cover, and the spring buckle is pressed against the side wall of the gasket to limit the displacement of the gasket along the axial direction of the rotating shaft.

[0016] In the above-mentioned embedded vehicle-mounted light field display, the angle between the upper rotation limit position and the lower rotation limit position is 60°.

[0017] In the above-mentioned embedded vehicle-mounted light field display, a shell is detachably connected to the outer wall of the central panel, an installation cavity is formed in the shell, and the worm wheel, worm, driving member and transmission gear are all arranged in the installation cavity.

[0018] In the above-mentioned embedded vehicle-mounted light field display, a first limit groove and a second limit groove are also formed in the installation cavity, and a limit clamp plate is detachably connected to the first limit groove, and the end of the worm passes through the limit clamp plate and is connected to the driving end of the driving member to prevent the worm from escaping from the first limit groove; a second bearing is arranged in the second limit groove, and the end of the worm away from the limit clamp plate is connected to the inner ring of the second bearing.

[0019] In the above-mentioned embedded vehicle-mounted light field display, the shell is composed of an upper cover and a lower cover, the upper cover and the lower cover together form the installation cavity, and a plurality of extensions are formed at the periphery of the upper cover and the lower cover, each of the extensions is provided with a connecting hole, and a plurality of mounting seats are provided on the central panel, and the connecting holes can be used for fixing parts to pass through and be connected to the mounting seats.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The utility model discloses an embedded vehicle-mounted light field display, which realizes free adjustment of the projection angle of the light field screen by switching between an initial position, an upper rotation limit position and a lower rotation limit position, so as to achieve the best viewing effect required by customers; at the same time, the rotation center of the light field screen is set at the middle position of both sides, so that the light field screen can be in the accommodating cavity when switched to different positions, thereby ensuring the overall aesthetics and making the position switching of the light field screen no longer restricted by space and application scenarios, saving space occupation, and facilitating the installation and use of customers, greatly improving the customer's user experience.

[0022] (2) By setting a bearing in the housing, the smoothness and stability of the light field screen when the driving component rotates through the output of the driving rod, worm gear and transmission gear are effectively improved, avoiding the phenomenon of jamming during the rotation process and affecting the customer's user experience. At the same time, the self-locking property of the worm and worm gear is utilized to provide a guarantee for the stability of the light field screen when it is at the required viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a stereogram of the present application;

[0024] Figure 2 It is a schematic diagram of the installation structure between the rotating shaft, the housing and the shaft pin cover plate on the light field screen;

[0025] Figure 3 It is a schematic diagram of the installation structure of the transmission component in the housing;

[0026] Figure 4 It is a schematic cross-sectional view of the first bearing, the shaft pin cover plate and the gasket.

[0027] In the figure, 1, central panel; 10, receiving chamber;

[0028] 2. Light field screen assembly; 20. Light field screen; 21. Rotating shaft; 210. Transmission gear; 22. First bearing; 23. Gasket; 24. Spring buckle;

[0029] 3. Transmission assembly; 30. Driving member; 31. Worm; 32. Worm wheel;

[0030] 4. Axle pin cover plate; 40. Limit hole;

[0031] 5. Shell; 50. Installation cavity; 500. First limiting groove; 501. Second limiting groove; 51. Limiting clamping plate; 52. Second bearing; 53. Upper cover; 54. Lower cover; 55. Extension part; 550. Connection hole. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] like Figures 1 to 4 As shown, the utility model is an embedded vehicle-mounted light field display, which is used to be installed on a central panel 1 with a receiving cavity 10, and includes: a light field screen component 2, which is rotatably arranged in the receiving cavity 10, and the light field screen component 2 has a light field screen 20 that can be switched between an initial position, an upper rotation limit position, and a lower rotation limit position of the central panel 1, and the rotation center of the light field screen 20 is located at the middle position of both sides thereof; a transmission component 3, which is connected to the central panel 1, and the driving end of the transmission component 3 is movably engaged with the light field screen component 2 to drive the light field screen 2 0 rotates relative to the central panel 1; when the light field screen 20 is in the initial position, the screen of the light field screen 20 is located at the opening end of the accommodating cavity 10, so that the light field screen 20 can be retracted into the accommodating cavity 10 and flush with the surface of the central panel 1; when the transmission component 3 drives the light field screen 20 to switch from the initial position to the upper rotation limit position or the lower rotation limit position, the light field screen 20 can rotate relative to the accommodating cavity 10 around its rotation center, so that the bottom end or the top end of the light field screen 20 can extend out of the accommodating cavity 10 to adjust the projection angle of the screen of the light field screen 20.

[0034] This solution mainly realizes the design mode of embedded flipping of the light field screen 20. It should be noted that the vehicle-mounted light field display is mainly installed on the central panel 1 in the front row of the co-pilot seat of the car. Specifically, when the user does not use the light field screen 20, the screen of the light field screen 20 is just at the opening end of the accommodating cavity 10 and is flush with the surface of the external central panel 1. That is to say, the entire light field screen 20 is completely in the accommodating cavity 10 at this time, which not only ensures the overall aesthetics of the interior of the car, but also saves the space occupied in the car, and also has a certain protective effect on the light field screen 20; when the user needs to watch a movie, the transmission component 3 can drive the light field screen 20 that is movably engaged with it to rotate relative to the central panel 1 to the upper rotation limit position or Figure 1At the lower limit rotation position shown, that is, when the light field screen 20 rotates clockwise (i.e., rotates at the upward rotation limit position) or counterclockwise (i.e., rotates at the downward rotation limit position) around its rotation center, a small part of the bottom or top end of the light field screen 20 (here refers to the position close to the opening end of the accommodating cavity 10) is bound to extend to the outside of the accommodating cavity 10 to rotate to the viewing angle required by the user. Precisely because the rotation center of the light field screen 20 is set at the middle position on both sides, the light field screen 20 can be in the accommodating cavity 10 when switched to different positions. Therefore, the light field screen 20 is no longer restricted by space and application scenarios when switching positions. It only needs to design the space of the accommodating cavity 10 in the central panel 1, which not only provides convenience for customers' installation and use, but also effectively ensures that the customers' user experience is not affected.

[0035] It should be noted that the structure of the accommodating cavity 10 in the present solution is of an arc V-shaped concave design (not shown in the figure), so that during the rotation of the light field screen 20, the bottom end or the top end of the light field screen 20 can be movably pressed against the inner wall of the accommodating cavity 10, so that the light field screen 20 can be restricted to the upper rotation limit position or the lower rotation limit position. The overall structure is simple and the operation is convenient and quick.

[0036] Preferably, the angle between the upper rotation limit position and the lower rotation limit position in the present solution is 60°. In the present embodiment, the target user group of the automobile light field screen 20 has a height between 1.3 meters and 1.9 meters. That is to say, when the light field screen 20 is switched to the lower rotation limit position, the projection of the light field screen 20 at this time is suitable for users with a height of 1.3 meters. Similarly, when the light field screen 20 is switched to the upper rotation limit position, the projection of the light field screen 20 at this time is suitable for users with a height of 1.9 meters. It can be seen that the rotation angle of the light field screen 20 in the present embodiment can be adjusted according to the design method of the above-mentioned accommodating cavity 10 space, so as to meet the viewing effect required by users of different heights and greatly improve the flexibility.

[0037] Further, if Figure 2 and Figure 3 As shown, the light field screen assembly 2 in the present solution includes a rotating shaft 21, which passes through the middle positions of both sides of the light field screen 20, and one end of the rotating shaft 21 is movably connected to the central panel 1, and the other end is movably engaged with the transmission assembly 3; when the transmission assembly 3 is turned on, the rotating shaft 21 can be driven to rotate relative to the central panel 1, thereby realizing the free switching of the light field screen 20 in the accommodating cavity 10 among the initial position, the lower rotation limit position and the upper rotation limit position, which is simple to operate and has good flexibility.

[0038] The central panel 1 is connected with an axle pin cover plate 4 , on which a limiting hole 40 is arranged, and the end of the rotating shaft 21 away from the transmission assembly 3 is rotatably arranged in the limiting hole 40 .

[0039] like Figure 2 and Figure 4 As shown, during the installation of the light field screen 20, the shaft pin cover plate 4 is pre-connected to the central panel 1 by screws or bolts, and the rotating shaft 21 on the light field screen 20 passes through the limiting hole 40, which, on the one hand, limits the position of the light field screen 20 in the accommodating cavity 10, and on the other hand, ensures the smoothness and stability of the rotating shaft 21 when rotating relative to the central panel 1, effectively avoiding the light field screen 20 from colliding with the inner wall of the accommodating cavity 10 or even getting stuck due to the radial displacement of the rotating shaft 21.

[0040] Further reference Figure 4 In this embodiment, the light field screen assembly 2 further includes a first bearing 22 disposed in the limiting hole 40, and the inner ring of the first bearing 22 is interference fit with the rotating shaft 21. While the limiting hole 40 is used to limit the radial displacement of the first bearing 22, the first bearing 22 can also be used to improve the smoothness and stability of the rotating shaft 21 when driving the light field screen 20 to switch between the upper rotation limit position and the lower rotation limit position, thereby ensuring that the light field screen 20 will not be damaged during frequent use, which is conducive to extending the service life of the light field screen 20.

[0041] A gasket 23 and a spring buckle 24 are also provided on the rotating shaft 21 . The gasket 23 is pressed against the side wall of the shaft pin cover 4 , and the spring buckle 24 is pressed against the side wall of the gasket 23 to limit the displacement of the gasket 23 along the axial direction of the rotating shaft 21 .

[0042] like Figure 4 As shown, during the installation process, the gasket 23 can be pre-assembled on the rotating shaft 21, and the spring buckle 24 can be movably connected to the rotating shaft 21, and the gasket 23 can be movably pressed against the gasket 23, thereby ensuring the stability of the gasket 23 when it is installed on the rotating shaft 21, and also providing convenience for the installation and removal of the component. The gasket 23 can play a dustproof effect on the bearing in the shaft pin cover plate 4, and also play a certain buffering effect on the vibration generated when the light field screen 20 relies on the rotation of the rotating shaft 21 to switch between different positions, effectively ensuring the stability of the light field screen 20 during use.

[0043] The transmission assembly 3 includes: a driving member 30, which is arranged on the central panel 1, and the driving end of the driving member 30 is coaxially connected with a worm 31; a worm wheel 32, and a transmission gear 210 is arranged at the end of the rotating shaft 21 extending out of the central panel 1, and the transmission gear 210 and the worm 31 are both movably engaged with the worm wheel 32, so that when the driving member 30 is driven, it can drive the light field screen 20 to switch between the initial position, the upper rotation limit position and the lower rotation limit position through the rotating shaft 21.

[0044] like Figure 3As shown, when the driving member 30 is turned on, the driving end of the driving member 30 can drive the worm 31 coaxially connected thereto to rotate, and under the transmission cooperation of the worm 31 and the worm wheel 32, the transmission gear 210 can drive the rotating shaft 21 to rotate, thereby realizing the free switching of the light field screen 20 between the initial position, the upper rotation limit position and the lower rotation limit position. The driving structure is relatively simple as a whole, and can increase the torque when driving the light field screen 20 to flip under multi-stage transmission, ensuring the smoothness and stability of the light field screen 20 during the flipping process. In addition, this solution can also utilize the self-locking characteristics of the worm 31 and the worm wheel 32 to ensure the stability of the light field screen 20 when it is at the viewing angle required by the user, thereby ensuring that the user's viewing experience is not affected.

[0045] Furthermore, a shell 5 is detachably connected to the outer wall of the central panel 1, and an installation cavity 50 is formed in the shell 5. The transmission gear 210, the driving member 30, the worm wheel 32 and the worm 31 are all arranged in the installation cavity 50. The design of the shell 5 on the outer wall of the central panel 1 can not only provide convenience for the installation of various components in the above-mentioned transmission assembly 3, effectively improve the assembly efficiency of the structure, but also provide a certain protection effect on various components, thereby preventing external dust or impurities from entering and affecting the service life of the components.

[0046] A first limiting groove 500 and a second limiting groove 501 are also formed in the installation cavity 50. A limiting clamp 51 is detachably connected to the first limiting groove 500. The end of the worm 31 passes through the limiting clamp 51 and is connected to the driving end of the driving member 30 to prevent the worm 31 from escaping from the first limiting groove 500. A second bearing 52 is arranged in the second limiting groove 501, and the end of the worm 31 away from the limiting clamp 51 is connected to the inner ring of the second bearing 52.

[0047] like Figure 3 As shown, the first limiting groove 500 in the present scheme is mainly used to connect the limiting clamp plate 51, while the second limiting groove 501 is used to install the second bearing 52. During the installation process of the above-mentioned worm 31, the second bearing 52 at the end of the worm 31 can be used to cooperate with the second limiting groove 501, and the other end relies on the cooperation between the limiting clamp plate 51 and the first limiting groove 500, thereby ensuring the stability of the worm 31 during rotation, achieving the effect of the worm 31 and the driving end of the driving member 30 being coaxially arranged and rotating synchronously, which greatly improves the stability of the structure during operation.

[0048] Preferably, a through hole (not shown in the figure) may be further provided on the central panel 1 of the present solution, and the end of the rotating shaft 21 can pass through the through hole, thereby realizing that the worm gear 32 drives the transmission gear 210 and the rotating shaft 21 to rotate synchronously. Preferably, the present solution also provides the same second bearing 52 as mentioned above in the through hole, and the inner ring of the second bearing 52 is matched with the rotating shaft 21, thereby ensuring the smoothness of the rotating shaft 21 when rotating, and providing a guarantee for the smoothness and stability when the rotating shaft 21 drives the light field screen 20 to switch freely between the initial position and the lower rotation limit position and the upper rotation limit position.

[0049] The shell 5 is composed of an upper cover 53 and a lower cover 54, which together form an installation cavity 50, and a plurality of extensions 55 are formed at the periphery of the upper cover 53 and the lower cover 54, each of which is provided with a connecting hole 550, and a plurality of mounting seats are provided on the central panel 1, and the connecting holes 550 can be used for the fixing parts to pass through and be connected in the mounting seats.

[0050] like Figures 1 to 4 As shown, the housing 5 is assembled by an upper cover 53 and a lower cover 54, wherein when the connection hole 550 on the extension portion 55 of the upper cover 53 or the lower cover 54 is aligned with the mounting seat (not shown in the figure), the worker can pass the fixing member through the connection hole 550 and connect it in the mounting seat, thereby realizing the installation between the housing 5 and the central panel 1. It should be noted that the fixing member in this solution can be replaced by other fixing members such as screws, screws, etc., and the overall structure of this connection method is simple, convenient for installation and disassembly, and also provides convenience for subsequent maintenance and replacement.

[0051] Preferably, in this solution, a control switch (not shown in the figure) is detachably mounted on the central panel 1. By electrically connecting the control switch to the driving member 30, when the user needs to use the light field screen 20, the user can control the opening and closing of the driving member 30 through the control switch, thereby adjusting the light field screen 20 to the viewing angle required by the user. The operation is simple, which brings great convenience to customers when watching movies.

[0052] It should be noted that the driving member 30 in this solution can be replaced by other driving devices such as a stepper motor and a servo motor. In addition, the detachable installation referred to in this solution can be replaced by other conventional connection methods such as bolts and screws.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. An embedded vehicle-mounted light field display, for installation on a central panel having a receiving cavity, characterized in that: include: a light field screen assembly, rotatably disposed in the accommodating cavity, wherein the light field screen assembly comprises a light field screen that can be switched between an initial position of the central panel, an upper rotation limit position, and a lower rotation limit position, and a rotation center of the light field screen is located at a middle position of both sides thereof; A transmission assembly connected to the central panel, wherein a driving end of the transmission assembly is movably engaged with the light field screen assembly to drive the light field screen to rotate relative to the central panel; When the light field screen is in the initial position, the screen of the light field screen is located at the opening end of the accommodating cavity, so that the light field screen can be retracted into the accommodating cavity and be flush with the surface of the central panel; When the transmission assembly drives the light field screen to switch from the initial position to the upper rotation limit position or the lower rotation limit position, the light field screen can rotate relative to the accommodating cavity around its rotation center, so that the bottom end or the top end of the light field screen can extend out of the accommodating cavity to adjust the projection angle of the light field screen.

2. The embedded vehicle-mounted light field display according to claim 1, characterized in that: The light field screen assembly includes a rotating shaft, which passes through the middle positions of both sides of the light field screen, and one end of the rotating shaft is movably connected to the central panel, and the other end is movably engaged with the transmission assembly.

3. The embedded vehicle-mounted light field display according to claim 2, characterized in that: The transmission assembly comprises: A driving member, disposed on the central panel, wherein a driving end of the driving member is coaxially connected with a worm; A worm wheel, a transmission gear is provided at the end of the rotating shaft extending out of the central panel, and the transmission gear and the worm are both movably engaged with the worm wheel, so that when the driving member is driven, the light field screen can be driven by the rotating shaft to switch between the initial position, the upper rotation limit position and the lower rotation limit position.

4. The embedded vehicle-mounted light field display according to claim 2, characterized in that: The central panel is connected with an axle pin cover plate, the axle pin cover plate is provided with a limiting hole, and the end of the rotating shaft away from the transmission assembly is rotatably arranged in the limiting hole.

5. The embedded vehicle-mounted light field display according to claim 4, characterized in that: The light field screen assembly further includes a first bearing disposed in the limiting hole, and an inner ring of the first bearing is interference fit with the rotating shaft.

6. The embedded vehicle-mounted light field display according to claim 4, characterized in that: A gasket and a spring buckle are also provided on the rotating shaft. The gasket is pressed against the side wall of the shaft pin cover plate, and the spring buckle is pressed against the side wall of the gasket to limit the displacement of the gasket along the axial direction of the rotating shaft.

7. The embedded vehicle-mounted light field display according to claim 1, characterized in that: The angle between the upper rotation limit position and the lower rotation limit position is 60°.

8. The embedded vehicle-mounted light field display according to claim 3, characterized in that: A shell is detachably connected to the outer wall of the central panel, an installation cavity is formed in the shell, and the worm wheel, worm, driving member and transmission gear are all arranged in the installation cavity.

9. The embedded vehicle-mounted light field display according to claim 8, characterized in that: A first limiting groove and a second limiting groove are also formed in the installation cavity. A limiting clamp is detachably connected to the first limiting groove. The end of the worm passes through the limiting clamp and is connected to the driving end of the driving member to prevent the worm from escaping from the first limiting groove. A second bearing is arranged in the second limiting groove, and the end of the worm away from the limiting clamp is connected to the inner ring of the second bearing.

10. The embedded vehicle-mounted light field display according to claim 8, characterized in that: The shell is composed of an upper cover and a lower cover, and the upper cover and the lower cover together form the installation cavity, and a plurality of extensions are formed at the periphery of the upper cover and the lower cover, each of the extensions is provided with a connecting hole, and a plurality of mounting seats are provided on the central panel, and the connecting holes can be used for fixing parts to pass through and be connected to the mounting seats.

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