Display device

Abstract

The present application provides a display device. The display device comprises at least two display units which are detachably connected, a light supplementing assembly, and an adapter support; the light supplementing assembly comprises a light bar, a first transmission component, an adapter plate, and a second transmission component which are connected; the light bar covers a seam between the two display units; part of the first transmission component passes through the seam and extends to one end of the adapter plate; the second transmission component is arranged on backlight sides of the two adjacent display units; the second transmission component is detachably connected to the adapter plate.

Description

Display devices Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] Currently, display splicing technology is rapidly developing to achieve large-scale displays. However, due to cost and reliability issues, splicing devices for organic light-emitting diode (OLED) and micro-LED direct display (MDD) panels have been hindered from widespread adoption. Therefore, splicing devices for LCD panels remain the mainstream product on the market.

[0003] In existing splicing devices, a light bar is usually provided between two display devices to eliminate the splicing seam between the spliced ​​display devices. However, the light bar and the driver are not removable, making the maintenance and installation of the fill light structure more difficult. SUMMARY OF THE INVENTION

[0004] The present application provides a display device to improve the problem of difficulty in reinstalling a fill light structure at a seam in an existing spliced ​​display device.

[0005] To solve the above problem, the technical solution provided by this application is as follows:

[0006] The present application proposes a display device, comprising:

[0007] At least two display devices, with a seam between two adjacent display devices;

[0008] an adapter bracket, located on the backlight side of the two adjacent display devices, with a portion of the adapter bracket extending into the joint, and the adapter bracket being detachably connected to at least one of the two adjacent display devices; and

[0009] A fill light assembly is detachably connected to the adapter bracket, and the fill light assembly includes:

[0010] a light bar, located on the light-emitting side of two adjacent display devices, and covering the joint;

[0011] a first transmission member disposed in the seam, wherein a first end of the first transmission member is electrically connected to a surface of the light bar facing away from the light emitting side, and a second end of the first transmission member extends toward the backlight side of the display device and passes through the seam;

[0012] an adapter plate, located on a side of the first transmission member away from the light bar, wherein the second end of the first transmission member is electrically connected to the first end of the adapter plate;

[0013] The second transmission member is located at the backlight side of the two adjacent display devices, and the first end of the second transmission member is detachably connected to the second end of the adapter plate.

[0014] The present application also proposes a display device, comprising:

[0015] At least two display devices, with a seam between two adjacent display devices;

[0016] an adapter bracket, located on the backlight side of the two adjacent display devices, with a portion of the adapter bracket extending into the joint, and the adapter bracket being detachably connected to at least one of the two adjacent display devices; and

[0017] A fill light assembly is detachably connected to the adapter bracket, and the fill light assembly includes:

[0018] a light bar, located on the light-emitting side of two adjacent display devices, and covering the joint;

[0019] a first transmission member disposed in the seam, wherein a first end of the first transmission member is electrically connected to a surface of the light bar facing away from the light emitting side, and a second end of the first transmission member extends toward the backlight side of the display device and passes through the seam;

[0020] an adapter plate, located on a side of the first transmission member away from the light bar, wherein the second end of the first transmission member is electrically connected to the first end of the adapter plate;

[0021] a second transmission member, located on the backlight side of two adjacent display devices, wherein a first end of the second transmission member is detachably connected to a second end of the adapter plate;

[0022] A controller is fixed on the backlight side of one of the two adjacent display devices, and the second end of the second transmission member is electrically connected to the controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG1 is a structural diagram of the display device of the present application on the light-emitting side;

[0024] FIG2 is a structural diagram of the display device of the present application on the backlight side;

[0025] FIG3 is a first structural diagram of a fill light component in the display device of the present application;

[0026] FIG4 is a second structural diagram of a fill light component in the display device of the present application;

[0027] FIG5 is a structural diagram of the light bar in the display device of the present application on the side away from the light output;

[0028] FIG6 is a structural diagram of the adapter bracket in the display device of the present application;

[0029] FIG7 is an enlarged view of area M in FIG6 ;

[0030] FIG8 is an enlarged view of area L in FIG6 ;

[0031] FIG9 is a top view of the structure of the adapter bracket in the display device of the present application;

[0032] FIG10 is an enlarged view of area N in FIG9 . Modes for Carrying Out the Invention

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; and "inside" and "outside" refer to the outline of the device.

[0034] In existing splicing devices, a light bar is usually set between two display devices to eliminate the splicing seam between the spliced ​​display devices. However, the light bar and driver are not removable, making the front maintenance and installation of the fill light structure difficult. This application proposes the following technical solutions to solve the above technical problems.

[0035] Referring to Figures 1 to 10, the present application proposes a display device 100, including at least two display devices 200, a fill light component 300 and an adapter bracket 60, with a seam 400 between two adjacent display devices 200; the display device 200 can be an LCD display device, a Mini LED display device, a Micro LED display device or other light-emitting display device.

[0036] In this embodiment, referring to FIG. 3 and FIG. 4 , the fill light assembly 300 may include a light bar 10 , a first transmission member 20 , an adapter plate 30 , and a second transmission member 40 , which are connected to each other.

[0037] In this embodiment, referring to Figures 3 and 4 , the light bar 10 can be disposed on the light-emitting side 201 of two adjacent display devices 200, with the light bar 10 covering the seam 400. A first transmission member 20 can be disposed within the seam 400, with a first end of the first transmission member 20 electrically connected to a surface of the light bar 10 that faces away from the light-emitting side 201, and a second end of the first transmission member 20 extending toward the backlight side 202 of the display device 200 and passing through the seam 400. An adapter plate 30 can be located on a side of the first transmission member 20 away from the light bar 10, with the second end of the first transmission member 20 electrically connected to the first end of the adapter plate 30. A second transmission member 40 can be located on the backlight side 202 of two adjacent display devices 200, with the first end of the second transmission member 400 and the second end of the adapter plate 30 being detachably connected. The adapter bracket 60 can be located on the backlight side 202 of two adjacent display devices 200, and part of the adapter bracket 60 extends into the seam 400. The adapter bracket 60 can be detachably connected to at least one of the two adjacent display devices 200, and the adapter assembly 300 is detachably connected to the adapter bracket 60.

[0038] The present application sets an adapter bracket 60 on the backlight side 202 of one of the two adjacent display devices 200, and the fill light assembly 300 is detachably connected to the adapter bracket 60, which simplifies the installation of the light bar 10 and the adapter plate 30, while realizing the separate design of the light bar and the driver in the fill light assembly 300, and the detachable connection of the second transmission component 40 and the adapter plate 30, which facilitates the overall maintenance of the fill light assembly 300.

[0039] It should be noted that the light bar 10 and the first transmission component 20 of the present application are detachably connected, the adapter plate 30 and the first transmission component 20 and the second transmission component 40 are all detachable, and the fill light assembly 300 and the adapter bracket 60 are detachably connected, so that all components of the present application can be disassembled, which is convenient for front maintenance and installation of each component.

[0040] It should be noted that the number of display devices 200 can be 2n display devices 200, for example, the display device 100 of the 1X2 combination in Figure 1, there is a seam 400 between two adjacent display devices 200, and the fill light component 300 is used to eliminate the seam 400 between two adjacent display devices 200; or, the display device 100 of the 2X2 combination of four display devices 200, there are four seams 400 between the four display devices 200, and it is necessary to set a fill light component 300 in each of the four seams 400. In the following embodiments, the technical solution of the present application is illustrated using the display device 100 of the 1X2 combination in Figures 1 and 2.

[0041] It should be noted that, in the present application, two light strips 10 can be set between two adjacent display devices 200, and each light strip 10 is connected to three first transmission components 20 connecting plates, and at the same time, the three first transmission components 20 are connected to one adapter plate 30, and one adapter plate 30 is connected to one second transmission component 40, and the two second transmission components 40 are connected to the same controller 50; and when the length of the seam 400 is longer, three or more light strips 10 can be set. The number of light strips 10 is mainly determined by the length of the seam 400 and the length of the light strip 10 itself. The following embodiment illustrates the technical solution of the present application with two light strips 10.

[0042] It should be noted that the light-emitting device on the light bar 10 can be set as Mini LED or Micro LED, and the LED of corresponding size can be set according to the size and resolution of the display device 100. The light-emitting device can be an LED device that emits red light, green light and blue light.

[0043] It should be noted that the fill light assembly 300 further includes a controller 50 , which is a HUB. The controller 50 can be fixed to the backlight side 202 of one of the two adjacent display devices 200 , and the second end of the second transmission member 40 is electrically connected to the controller 50 .

[0044] It should be noted that the first transmission member 20 may be a printed circuit board (PCB), and the second transmission member 40 may be a flexible flat cable. The first transmission member 20 is typically chemically etched from flexible copper clad foil (FCCL) to create a single-sided, double-sided, or multi-layer flexible circuit board with varying circuit configurations. The second transmission member 40 is typically constructed from two layers of insulating foil, top and bottom, with a flat copper foil sandwiched between them. This results in a simpler, thicker finished product.

[0045] The technical solution of this application is now described in conjunction with specific embodiments.

[0046] In the display device 100 of the present application, referring to FIG5 , the fill light assembly 300 further includes at least two gaskets 110 arranged on the side of the light bar 10 away from the light emitting side, at least two gaskets 110 are located on both sides of the light bar 10 , the gaskets 110 are detachably connected to the adapter bracket 60 , and at least two gaskets 110 are located in the joint 400 .

[0047] Referring to FIG5 , the gasket 110 may be a magnetic metal pad, which is primarily used to secure the light bar 10 to the adapter bracket 60. To facilitate the detachability of the light bar 10, a magnet member may be provided on the adapter bracket 60 in this embodiment to magnetically attach the light bar 10 to the adapter bracket 60. This simplifies the installation of the light bar 10, and the detachable connection between the light bar 10 and the adapter bracket 60 facilitates disassembly and maintenance of the light bar 10. Furthermore, to ensure seamless adhesion between the light bar 10 and the surface of the display device 200, the position of the gasket 110 corresponds to the seam 400, meaning that the gasket 110 can be embedded within the seam 400 when the light bar 10 is attached to the surface of the display device 200.

[0048] In this embodiment, in order to minimize the seam 400 of the light bar 10 , the width of the seam 400 of the present application needs to be smaller than the width of the light bar 10 , so as to achieve seamless splicing of the display device 200 .

[0049] At the same time, the spacing between the light-emitting devices on the light bar 10 and the light-emitting devices in the adjacent display device 200 needs to be close to or equal to the spacing between two adjacent light-emitting devices in the display device 200, so as to achieve equal spacing between two adjacent light-emitting devices at any position on the display device 100; if multiple columns of light-emitting devices are provided on the light bar 10, the spacing between two adjacent light-emitting devices on the light bar 10 needs to be close to or equal to the spacing between two adjacent light-emitting devices in the display device 200, so as to achieve equal spacing between two adjacent light-emitting devices at any position on the display device 100, thereby meeting the uniformity of the distribution of light-emitting devices.

[0050] In this embodiment, two gaskets 110 can be provided on one light bar 10, and the gasket 110 can be fixedly connected to the back of the light bar 10 through an adhesive layer, such as 416 instant adhesive, or fixedly connected to the back of the light bar 10 through welding materials such as soldering.

[0051] In this embodiment, referring to FIG. 3 and FIG. 4 , the first transmission member 20 and the adapter plate 30 may be located on the same plane, and the adapter plate 30 and the light bar 10 are vertically arranged, and the first transmission member 20 and the adapter plate 30 are separated from the adjacent display device 200 .

[0052] In the structures of Figures 3 and 4 , the first transmission member 20 and the adapter plate 30 are arranged vertically. The first end of the first transmission member 20 is electrically connected to the interface of the light bar 10, and the second end of the first transmission member 20 is electrically connected to the first end of the adapter plate 30. In this embodiment, the first end of the adapter plate 30 is provided with three adapter interfaces, one of which is electrically connected to a first transmission member 20. The second end of the adapter plate 30 is provided with two adapter interfaces, and the second transmission member 40 can be electrically connected to one of the adapter interfaces.

[0053] In the structure of FIG. 3 and FIG. 4 , in order to connect the second transmission circuit 40 , the second transmission member 40 is bent from the output end of the adapter board 30 to the connection end of the controller 50 .

[0054] In this embodiment, the first transmission member 20 is detachably connected to the light bar 10 and the adapter plate 30 , and the second transmission member 40 is detachably connected to the adapter plate 30 and the controller 50 .

[0055] In this embodiment, referring to FIG. 6 , the adapter bracket 60 may include an adapter body 610 and a plurality of fixing rods 620 disposed on the side of the adapter body 610 . The light bar 10 and the adapter plate 30 are both detachably connected to the fixing rods 620 .

[0056] 6 and 7 , the adapter body 610 may include a first body 611 and a second body 612 vertically arranged, the first body 611 and the light bar 10 being arranged in parallel, and the second body 612 being orthographically projected on the display device 100 and located within the seam 400; the first body 611 is provided with a plurality of mounting holes 611 a, and the first body 611 is fixedly connected to the surface of the backlight side 202 of the display device 200 through the plurality of mounting holes 611 a.

[0057] In this embodiment, the surface of the backlight side 202 of the display device 200 is provided with fixing holes (not shown) corresponding to the multiple mounting holes 611a, and screws are provided in the mounting holes 611a and the fixing holes. The first body 611 is fixedly connected to the side of the display device 200 facing away from the light-emitting surface of the display device 100 by multiple screws; at the same time, since the fixing rod 620 is mainly used to fix the light strip 10 and the adapter plate 30 at the position of the seam 400, the orthographic projection of the second body 612 in the seam 400 needs to be located in the seam 400.

[0058] 6 and 7 , a groove 621 corresponding to the gasket 110 is provided on the side of the fixing rod 620 close to the light bar 10 , and the gasket 110 is embedded in the groove 621 ; at the same time, the magnetic component on the adapter bracket 60 can be set in the groove 621 , and the gasket 110 and the magnetic component are magnetically attracted to each other.

[0059] In this embodiment, the fixing rod 620 may extend from the bottom of the second body 612 toward the first body 611 , exceed the surface of the first body 611 and extend into the seam 400 , and be connected to the light bar 10 .

[0060] For example, in Figures 6 to 10, four fixing plates are provided near one end of the light bar on the four fixing rods 620. The fixing plates have grooves 621 in them, and the gaskets 110 are embedded in the grooves 621, with one groove 621 corresponding to one gasket 110. The fixing plates can be made of magnets, or a magnetic material can be provided on the surface of the fixing plates. The gaskets 110 are detachably connected to the fixing plates through magnetic force.

[0061] In this embodiment, referring to Figures 6 and 7 , the grooves 621 may also have openings facing adjacent fixing rods 620. This means that the grooves 621 on two fixing plates corresponding to the same light bar 10 may have opposing openings. For example, the grooves 621 on fixing plates A1 and A2 in Figure 6 have opposing openings, and fixing plates A3 and A4 have opposing openings. Furthermore, two adjacent fixing plates corresponding to different light bars 10 may be integrally provided, such as fixing plates A2 and A3 in Figure 6 .

[0062] In the present application, a fixing plate with magnetic attraction is provided on the fixing rod 620, and the gasket 110 is embedded in the groove 621 on the corresponding fixing plate, so that the light bar 10 and the adapter bracket 60 can be detachably connected. While simplifying the installation of the light bar 10, the detachable connection between the light bar 10 and the adapter bracket 60 can facilitate the disassembly of the light bar 10 for maintenance of the light bar 10; secondly, the grooves 621 on the two adjacent fixing rods 620 have relative openings, which can prevent the light bar 10 from shaking.

[0063] In the display device 100 of the present application, referring to Figures 3, 6, and 7, the adapter bracket 60 further includes a plurality of reinforcing ribs 613. A first side of the reinforcing rib 613 is fixedly connected to the first body 611, and a second side of the reinforcing rib 613 is fixedly connected to the second body 612. The reinforcing ribs 613 are primarily used to connect the first body 611 and the second body 612 and to increase the strength of the adapter bracket 60.

[0064] Please refer to Figures 6 to 10. A accommodating cavity 622 is further provided between the second main body 612 and the multiple fixing rods 620. The accommodating cavity 622 is provided with an accommodating inlet 622a on the side close to the light bar 10, and the accommodating cavity 622 is provided with an accommodating outlet 622b on the side away from the light bar 10. The first transmission member 20 and the adapter plate 30 enter the accommodating cavity 622 from the accommodating inlet, and the second end of the adapter plate 30 is connected to the first end of the second transmission member 40 at the accommodating outlet 622b.

[0065] In this embodiment, the second main body 612 is a sandwich design. When the adapter plate 30 is installed, the adapter plate 30 can enter the accommodating cavity 622 through the accommodating inlet 622a. At the same time, the two ends of the adapter plate 30 can slide in the accommodating cavity 622 and nest in the accommodating cavity 622, and the sliding of the adapter plate 30 will drive the first transmission member 20 to move in the accommodating cavity 622, so that the first transmission member 20 is fixed in the accommodating cavity 622, and the second end of the adapter plate 30 is connected to the first end of the second transmission member 40 at the position of the accommodating outlet 622b; at the same time, the adapter plate 30 can slide out of the slide groove 622, so that the adapter plate 30 and the first transmission member 20 are separated from the adapter bracket 60.

[0066] In this embodiment, there may be multiple accommodating cavities 622 , and the number of accommodating cavities 622 may be the same as the number of adapter plates 30 . One accommodating cavity 622 may accommodate one adapter plate 30 .

[0067] In this embodiment, the thickness of the adapter plate 30 in the direction from the first body 611 to the second body 612 is less than the width of the accommodating cavity 622. To allow the adapter plate 30 to slide freely within the accommodating cavity 622, the thickness of the adapter plate 30 of the present application needs to be less than the width of the accommodating cavity 622 to prevent the adapter plate 30 from interfering with the second body 612 within the accommodating cavity 622.

[0068] In this embodiment, in order to facilitate the adapter plate 30 to smoothly enter the accommodating cavity 622, the connection position between the first body 611 and the second body 612 can be provided with a chamfer to increase the width of the accommodating cavity 622 at the entrance position, that is, the present application can set chamfers at the accommodating inlet and accommodating outlet positions to increase the width of the accommodating cavity 622 at the entrance and exit positions.

[0069] In this embodiment, the display device may include electronic display devices such as a mobile phone, a television, and a laptop computer.

[0070] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] The above is a detailed introduction to a display device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, include: At least two display devices, with a seam between two adjacent display devices; An adapter bracket is located at the backlight side of the two adjacent display devices, and a portion of the adapter bracket extends into the joint, and the adapter bracket is detachably connected to at least one of the two adjacent display devices; as well as A fill light assembly is detachably connected to the adapter bracket, and the fill light assembly includes: A light bar, located at the light-emitting side of two adjacent display devices, and the light bar covers the joint; A first transmission member is disposed in the seam, wherein a first end of the first transmission member is electrically connected to a side of the light bar facing away from the light emitting side, and a second end of the first transmission member extends toward the backlight side of the display device and passes through the seam; an adapter plate, located at a side of the first transmission member away from the light bar, the second end of the first transmission member being electrically connected to the first end of the adapter plate; The second transmission member is located at the backlight side of two adjacent display devices, and the first end of the second transmission member and the second end of the adapter plate are detachably connected.

2. The display device according to claim 1, in, The first transmission member and the adapter plate are located on the same plane, and the adapter plate and the light bar are arranged vertically; Wherein, the first transmission member and the adapter plate are both separately arranged from the two adjacent display devices.

3. The display device according to claim 1, in, The fill light assembly further includes at least two gaskets arranged on a side of the light bar away from the light output, at least two of the gaskets are located on both sides of the light bar, and the gaskets are detachably connected to the adapter bracket; Wherein, at least two of the gaskets are located in the joint.

4. The display device according to claim 3, in, The adapter bracket includes an adapter body and a plurality of fixing rods arranged on the side of the adapter body, and the light bar and the adapter plate are both detachably connected to the fixing rods.

5. The display device according to claim 4, in, A groove corresponding to the gasket is provided on one side of the fixing rod close to the lamp board, and the gasket is embedded in the groove.

6. The display device according to claim 5, in, The gasket is a magnetic metal pad, and the adapter bracket also includes a magnetic component, which is arranged in the groove, and the gasket and the magnetic component are magnetically attracted to each other.

7. The display device according to claim 5, It is characterized in that A fixing plate is provided at one end of the fixing rod close to the light bar, and the groove is formed on the fixing plate.

8. The display device according to claim 4, in, The adapter body comprises a first body and a second body which are arranged vertically, the first body and the light bar are arranged in parallel, and the second body is orthographically projected on the display device and is located within the joint.

9. The display device according to claim 8, in, The first body is provided with a plurality of mounting holes, and the first body is fixedly connected to the surface of the backlight side of the display device through the plurality of mounting holes.

10. The display device according to claim 8, in, A receiving cavity is further provided between the second body and the plurality of fixing rods. A receiving inlet is provided on one side of the receiving cavity close to the light bar, and a receiving outlet is provided on the side of the receiving cavity away from the light bar. Wherein, the first transmission member and the adapter plate enter the receiving cavity from the receiving inlet, and the second end of the adapter plate is connected to the first end of the second transmission member at the receiving outlet.

11. The display device according to claim 8, wherein, In the direction from the first body to the second body, the thickness of the adapter plate is less than the width of the receiving cavity.

12. The display device according to claim 8, wherein, The number of the receiving cavities is equal to the number of the adapter plates.

13. The display device according to claim 8, wherein, A chamfer is provided at the connection position between the first body and the second body.

14. The display device according to claim 8, wherein, The adapter bracket further includes a plurality of reinforcing ribs. The first side of the reinforcing rib is fixedly connected to the first body, and the second side of the reinforcing rib is fixedly connected to the second body.

15. The display device according to claim 3, wherein, The gasket is fixedly connected to the light bar through an adhesive layer or a welding material.

16. The display device according to claim 1, wherein, The width of the seam is less than the width of the light bar.

17. The display device according to claim 1, wherein, The first transmission member is a printed circuit board, and the second transmission member is a flexible flat cable.

18. The display device according to claim 1, wherein, The distance between the light-emitting devices on the light bar and the light-emitting devices in the adjacent display device is equal to the distance between two adjacent light-emitting devices in the display device.

19. A display device, which comprises: At least two display devices, with a seam between two adjacent display devices; An adapter bracket, located on the backlight side of two adjacent display devices, and part of the adapter bracket extends into the seam. The adapter bracket is detachably connected to at least one of the two adjacent display devices; and A supplementary light component, detachably connected to the adapter bracket. The supplementary light component includes: A light bar, located on the light-emitting side of two adjacent display devices, and the light bar covers the seam; A first transmission member, arranged in the seam. The first end of the first transmission member is electrically connected to the side of the light bar facing away from the light-emitting side, and the second end of the first transmission member extends towards the backlight side of the display device and passes through the seam; An adapter plate, located on the side of the first transmission member away from the light bar. The second end of the first transmission member is electrically connected to the first end of the adapter plate; A second transmission member, located on the backlight side of two adjacent display devices. The first end of the second transmission member is detachably connected to the second end of the adapter plate; A controller, fixed on the backlight side of one of the two adjacent display devices, and the second end of the second transmission member is electrically connected to the controller.

20. The display device according to claim 19, Among them, the adapter bracket includes an adapter body and a plurality of fixing rods arranged on the side surface of the adapter body. The adapter body includes a first body and a second body arranged vertically. The first body is arranged parallel to the light bar, and the second body is orthogonally projected onto the display device within the seam; wherein, a receiving cavity is further provided between the second body and the plurality of fixing rods. A receiving inlet is provided on one side of the receiving cavity close to the light bar, and a receiving outlet is provided on the side of the receiving cavity far from the light bar. The first transmission member and the adapter plate enter the receiving cavity from the receiving inlet, and the second end of the adapter plate is connected to the first end of the second transmission member at the receiving outlet.

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