Display device

Abstract

The utility model provides a display device which comprises an installation frame, a power supply box and a display module, the power supply box is arranged on the installation frame, the power supply box comprises a box body, an electric connection module and a first electric connection piece, and a first sealing piece is arranged on the peripheral side of the first electric connection piece in a sleeved mode. The display module is arranged on the mounting frame, a display surface of the display module is arranged away from the mounting frame, a second electric connecting piece is arranged on one side, away from the display surface, of the display module, and the first electric connecting piece can be electrically connected with the second electric connecting piece, so that the first sealing piece can abut against the side wall of the peripheral side of the second electric connecting piece. The side, away from the display face, of the display module is provided with a flanging part, the flanging part extends in the direction away from the display face, the flanging part annularly surrounds the peripheral side of the second electric connecting piece, and when the first electric connecting piece and the second electric connecting piece are connected, the flanging part can abut against the side wall, on the peripheral side of the first electric connecting piece, of the box body. The utility model aims to enhance the waterproof performance of the display device and reduce the water inflow risk of the display device.

Description

Technical Field

[0001] This utility model relates to the technical field of display screen equipment, and in particular to a display device. Background Technology

[0002] With the rapid development of the LED industry, the development of LED displays has also greatly improved. Display devices are now widely used in the security industry, advertising media industry, and most public places, with large-scale displays being particularly prevalent. Existing display devices generally consist of a mounting frame, a power supply box, and display modules mounted on the mounting frame. Most display devices on the market use a silicone ring squeezed between the frame and the display module; however, if the silicone ring is not installed properly or after prolonged use, water can still enter the display module and power supply box, leading to short circuits or black screens. Utility Model Content

[0003] The purpose of this invention is to enhance the waterproof performance of the display device and reduce the risk of water ingress.

[0004] To solve the above-mentioned technical problems, this utility model provides a display device, comprising:

[0005] Mounting framework;

[0006] A power supply box is mounted on the mounting frame. The power supply box includes a box body, an electrical connection module disposed within the box body, and a first electrical connector electrically connected to the electrical connection module. A first sealing element is sleeved around the periphery of the first electrical connector.

[0007] A display module is disposed on the surface of the mounting frame. The display surface of the display module is arranged away from the mounting frame. A second electrical connector is provided on the side of the display module away from the display surface. The first electrical connector can be electrically connected to the second electrical connector. The first sealing member can abut against the side wall of the second electrical connector.

[0008] The display module has a flange on the side away from the display surface. The flange extends in the direction away from the display surface and is arranged in a ring around the periphery of the second electrical connector. When the first electrical connector and the second electrical connector are in contact, the flange can abut against the side wall of the housing around the first electrical connector.

[0009] Optionally, the display module includes a housing and a lamp plate disposed on the housing away from the mounting frame, the second electrical connector is disposed on the side of the lamp plate away from the display surface, and the flange is disposed on the side of the housing away from the lamp plate.

[0010] Optionally, the housing has a first annular groove on the side away from the lamp plate, the second electrical connector is disposed in the first annular groove, the flange surrounds and protrudes from the periphery of the first annular groove, and when the first electrical connector and the second electrical connector are electrically connected, the first sealing member is disposed in the first annular groove and abuts against the inner wall of the first annular groove.

[0011] Optionally, a drain outlet is provided on the side wall of the flange portion, and the drain outlet is located on the lower side wall of the flange portion.

[0012] Optionally, the outer periphery of the first seal is provided with a plurality of protrusions, which are spaced apart along the thickness direction of the first seal. When the first seal is placed in the first annular groove, the plurality of protrusions abut against the inner sidewall of the first annular groove.

[0013] Optionally, a second annular groove is provided on the side of the box body facing the mounting frame. The second annular groove surrounds the first electrical connector. A second sealing member is provided in the second annular groove. An abutment portion is provided between the flange and the first annular groove. When the first electrical connector and the second electrical connector are mated, the second sealing member can abut against the surface of the abutment portion.

[0014] Optionally, the box body includes a main body disposed on the mounting frame and a first cover disposed on the side of the main body facing the mounting frame. The main body has a first opening on the side facing the first cover. The first cover can connect to the main body to close the first opening. The side wall of the first cover facing the main body has a third annular groove. A third sealing member is engaged in the third annular groove. When the main body is connected to the first cover, the third sealing member fits against the edge of the first opening.

[0015] Optionally, the box body further includes a second cover disposed on the side of the main body away from the first cover. The main body has a second opening on the side facing the second cover. The second cover can close the second opening. A fourth annular groove is provided on the side wall of the second cover facing the main body. A fourth sealing element is engaged in the fourth annular groove. When the second cover is connected to the main body, the fourth sealing element fits against the edge of the second opening.

[0016] Optionally, one or more power supply boxes are provided, the length direction of the power supply box is consistent with the length direction or width direction of the mounting frame, and the multiple power supply boxes are spaced apart on the mounting frame and electrically connected in sequence, and are located at the same height position of the mounting frame.

[0017] Optionally, the display device includes a plurality of display modules, and the power supply box is provided with a plurality of first electrical connectors corresponding to the number of display modules. A first electrical connector is electrically connected to a second electrical connector on a display module, so that a power supply box can simultaneously connect to a plurality of display modules.

[0018] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: The display device includes a mounting frame, a power supply box, and a display module. The power supply box includes a housing and a first electrical connector, and the display module includes a second electrical connector. By providing a first sealing element around the outer periphery of the first electrical connector, when the first electrical connector and the second electrical connector are mated, the first sealing element can cover the connection between the first electrical connector and the second electrical connector, improving the sealing performance at the connection and reducing the possibility of moisture entering the power supply box or display module from between the first electrical connector and the second electrical connector. Furthermore, a flange is provided on the side of the display module facing away from the display surface, and the flange surrounds the periphery of the second electrical connector. When the first electrical connector and the second electrical connector are mated, the flange can abut against the side wall of the housing around the first sealing element. This further improves the sealing performance at the connection between the first electrical connector and the second electrical connector, thereby enhancing the overall waterproof performance of the display device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a display device in the prior art;

[0020] Figure 2 This is a schematic diagram of the power supply box proposed in this application.

[0021] Figure 3 yes Figure 2 A side sectional view of the power supply box;

[0022] Figure 4 This is a schematic diagram of the display module structure;

[0023] Figure 5 This is a schematic diagram of the display device proposed in this application;

[0024] Figure 6 yes Figure 5 A schematic diagram of one embodiment.

[0025] The reference numerals in the attached drawings are explained as follows: 100, display device; 10, mounting frame; 11, support beam; 12, mounting beam; 13, vertical beam; 14, horizontal beam; 141, mounting hole; 15, cable guide; 151, cable guide cavity; 16, mounting position; 20, power supply box; 21, accommodating cavity; 22, box body; 221, first opening; 222, second opening; 223, main body; 2231, inlet conduit; 224, first cover; 2241, second opening. 225. Second annular groove; 2251. Heat dissipation teeth; 23. Heat-conducting component; 24. First electrical connector; 30. Display module; 31. Housing; 311. First annular groove; 312. Abutment part; 32. Lamp board; 33. Second electrical connector; 34. Flanged part; 341. Drain outlet; 40. First seal; 41. Protruding edge; 50. Second seal; 60. Third seal; 70. Fourth seal; 80. Electrical connection module. Detailed Implementation

[0026] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0027] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Figure 1 A schematic diagram of a prior art power supply box fixed to a mounting frame is shown.

[0030] In existing technology, a silicone ring is squeezed between the frame and the display module in the display device. However, the silicone ring may not be installed properly or may be used for a long time, and water may still enter the display module and power box, causing short circuits or black screens.

[0031] Therefore, this application proposes a display device in which a first sealing member is sleeved on the outer periphery of the first electrical connector, and a flange is provided circumferentially on the periphery of the second electrical connector of the display module, so as to enhance the waterproof performance between the first electrical connector and the second electrical connector and reduce the possibility of moisture entering the power box or the display module through the first electrical connector and the second electrical connector.

[0032] Please see Figure 2 and Figure 4 The present application discloses a display device 100 comprising a mounting frame 10, a power supply box 20, and a display module 30. The power supply box 20 is mounted on the mounting frame 10 and includes a box body 22, an electrical connection module 80 disposed within the box body 22, and a first electrical connector 24 electrically connected to the electrical connection module 80. A first sealing member 40 is sleeved around the periphery of the first electrical connector 24. The display module 30 is disposed on the surface of the mounting frame 10, with its display surface facing away from the mounting frame 10. A second electrical connector 33 is disposed on the side of the display module 30 facing away from the display surface. The first electrical connector 24 can be electrically connected to the second electrical connector 33, allowing the first sealing member 40 to abut against the outer periphery of the second electrical connector 33. The display module 30 has a flange 34 on the side away from the display surface. The flange 34 extends in the direction away from the display surface and is arranged in a ring around the second electrical connector 33. When the first electrical connector 24 is connected to the second electrical connector 33, the flange 34 can abut against the side wall of the box 22 around the first sealing member 40.

[0033] Thus, by fitting a first sealing element 40 around the outer periphery of the first electrical connector 24, when the first electrical connector 24 and the second electrical connector 33 are mated, the first sealing element 40 can abut against the outer periphery of the second electrical connector 33, improving the sealing performance at the connection between the first electrical connector 24 and the second electrical connector 33, thereby reducing the possibility of moisture entering the power supply box 20 or the display module 30 from between the first electrical connector 24 and the second electrical connector 33. Furthermore, a flange portion 34 is provided on the side of the display module 30 facing away from the display surface. The flange portion 34 surrounds the periphery of the second electrical connector 33, and when the first electrical connector 24 and the second electrical connector 33 are mated, the flange portion 34 can abut against the side wall of the box 22 surrounding the first sealing element 40. This further improves the sealing performance at the connection between the first electrical connector 24 and the second electrical connector 33, thereby enhancing the overall waterproof performance of the display device 100 and ensuring the stable operation of the power supply box 20 and the display module 30.

[0034] In some embodiments, the first seal 40 is configured as an annular sealing ring, and the outer periphery of the first seal 40 is provided with multiple layers of raised edges 41, which are spaced apart along the extending direction of the first seal 40.

[0035] In other embodiments, the first seal 40 may also be configured as a waterproof tape or a sealant, as long as it can improve the sealing performance between the first electrical connector 24 and the second electrical connector 33.

[0036] In some embodiments, please refer to Figure 5 and Figure 6 The mounting frame 10 includes four support beams 11 connected end to end, forming a rectangular frame structure. The mounting frame 10 also includes four mounting beams 12, one vertical beam 13, and one horizontal beam 14. The horizontal beam 14 is fixed to the mounting frame 10, and its length direction is consistent with that of the mounting frame 10. The side of the power supply box 20 facing the mounting frame 10 is mounted to the horizontal beam 14 using bolts or screws.

[0037] Furthermore, the crossbeam 14 is provided with two mounting holes 141, which are spaced apart in the horizontal direction. The first electrical connector 24 can pass through one mounting hole 141 and be electrically connected to the second electrical connector 33 of the display module 30.

[0038] It should be noted that the mounting frame 10 can have a length direction, a width direction and a height direction. When the display module 30 is viewed from the front, the horizontal direction is the length direction of the mounting frame 10 and the vertical direction is the height direction of the mounting frame 10.

[0039] In some embodiments, the vertical beam 13 is vertically fixed in the middle of the mounting frame 10, and its two ends are respectively connected to two vertically opposite support beams 11. Two power boxes 20 are arranged horizontally at intervals on opposite sides of the vertical beam 13. A through groove is also provided on the middle side wall of the support beam 11, and a cable guide 15 is provided in the through groove. The cable guide 15 has a cable passage cavity 151 for cables to pass through. The opposite ends of the cable guide 15 in the horizontal direction are respectively connected to the two power boxes 20 on both sides of the vertical beam 13, so that the cables in the accommodating cavity 21 of one power box 20 extend into the power box 20 on the other side through the cable passage cavity 151. In this way, all external cables of the display device 100 are laid inside the power box 20, improving the appearance of the display device 100.

[0040] In this embodiment, four mounting beams 12 are vertically arranged on opposite sides of a vertical beam 13. Two mounting beams 12 on one side of the vertical beam 13 are respectively connected to two vertically oriented support beams 11 and are spaced apart along the same vertical line to form a space for mounting a power supply box 20. The other two mounting beams 12 are vertically arranged on the other side of the vertical beam 13, respectively connected to two vertically oriented support beams 11 and spaced apart along the same vertical line to form a space for mounting another power supply box 20. The vertical beam 13 and the four mounting beams 12 enclose eight mounting positions 16 on the mounting frame 10 for mounting the display module 30.

[0041] In other embodiments, the number of vertical beams 13, mounting beams 12 and support beams 11 can be varied. There can be more than two vertical beams 13, and more than four mounting beams 12 and support beams 11. The number of mounting positions 16 can be less than eight or more, and is not limited to the above situations.

[0042] In some embodiments, please refer to Figure 2 and Figure 3 The power supply box 20 is designed as a rectangular structure, but it can also be circular or elliptical. Furthermore, the length of the power supply box 20 is aligned with the length of the mounting frame 10, allowing the power supply box 20 to be horizontally mounted on the mounting frame 10. This enables maintenance personnel to repair the internal components of the power supply box 20 from the same height on the mounting frame 10, improving the convenience of maintenance.

[0043] In this embodiment, the box 22 has a rectangular structure and includes a main body 223, a first cover 224, and a second cover 225. The first cover 224 is located on the side of the main body 223 near the mounting frame 10, and the second cover 225 is located on the side of the main body 223 away from the mounting frame 10. The main body 223 has a receiving cavity 21. The side of the main body 223 facing the first cover 224 has a first opening 221, and the side of the main body 223 facing the second cover 225 has a second opening 222. Both the first opening 221 and the second opening 222 are connected to the receiving cavity 21. The first cover 224 is used to close the first opening 221, and the second cover 225 is used to close the second opening 222. The first cover 224, the second cover 225, and the main body 223 together form the receiving cavity 21. The electrical connection module 80 is housed within the accommodating cavity 21. Multiple through holes are provided on the first cover 224, and a first electrical connector 24 passes through one of these through holes to electrically connect with the electrical connection module 80. A cable inlet pipe 2231 is provided at the bottom of the main body 223, and the cable inlet pipe 2231 is connected to the accommodating cavity 21. External cables extend into the accommodating cavity 21 through the cable inlet pipe 2231 and electrically connect with the electrical connection module 80.

[0044] In some embodiments, please refer to Figure 2 and Figure 3 The first cover 224 is configured as a shell 31. A second annular groove 2241 is provided on the side of the first cover 224 facing the mounting frame 10. A second sealing element 50 is fitted inside the second annular groove 2241. When the first electrical connector 24 and the second electrical connector 33 are mated, the second sealing element 50 abuts against the surface of the contact portion 312 between the flange portion 34 and the first annular groove 311, thereby sealing the circumference of the first annular groove 311 and improving the waterproof performance between the first electrical connector 24 and the second electrical connector 33.

[0045] In this embodiment, the second sealing element 50 can be configured as a sealing ring or a metal gasket, as long as it improves the sealing between the display module 30 and the power box 20.

[0046] In some embodiments, a third annular groove (not shown) is provided circumferentially on the side wall of the first cover 224 facing the main body 223, and a third sealing member 60 is engaged within the third annular groove. The third sealing member 60 can abut against the edge of the first opening 221 of the main body 223 to seal the first opening 221. In this way, the sealing performance of the power box 20 is improved, which can effectively prevent external moisture or impurities from entering the accommodating cavity 21 through the first opening 221, thereby reducing the possibility of external moisture or impurities entering the accommodating cavity 21 and causing a short circuit in the electrical connection module 80.

[0047] In other embodiments, the third seal 60 may be configured as a rectangular sealing ring or a metal gasket, as long as it can improve the sealing performance of the power supply box 20.

[0048] In some embodiments, the second cover 225 is configured as a housing 31 structure. A fourth annular groove (not shown) is circumferentially provided on the side wall of the second cover 225 facing the main body 223, and a fourth sealing member 70 is engaged within the fourth annular groove. The fourth sealing member 70 can abut against the edge of the second opening 222 of the main body 223 to seal the second opening 222. This improves the sealing performance of the power supply box 20, effectively preventing external moisture or impurities from entering the accommodating cavity 21 through the second opening 222, thereby reducing the possibility of external moisture or impurities entering the accommodating cavity 21 and causing a short circuit in the electrical connection module 80.

[0049] In other embodiments, the fourth seal 70 may be configured as a rectangular sealing ring or a metal gasket, as long as it can improve the sealing performance of the power supply box 20.

[0050] In some embodiments, please refer to Figure 3A heat-conducting element 23 is provided on the side wall of the second cover 225 facing the main body 223. The heat-conducting element 23 is used to resist the electrical connection module 80. The heat generated by the electrical connection module 80 can be conducted to the second cover 225 through the heat-conducting element 23, so that the heat will not accumulate on the electrical connection module 80.

[0051] In other embodiments, the heat-conducting element 23 may be configured as thermally conductive silicone or other thermally conductive materials with superior thermal conductivity, as long as the heat generated by the electrical connection module 80 can be conducted to the second cover 225.

[0052] In some embodiments, please refer to Figure 5 The second cover 225 has multiple heat dissipation teeth 2251 on the side opposite to the heat conductor 23. The multiple heat dissipation teeth 2251 are vertically arranged on the second cover 225 to dissipate the heat conducted from the heat conductor 23 to the second cover 225, gradually reducing the internal temperature of the power supply box 20, preventing the power supply box 20 from being damaged due to excessive internal temperature, ensuring the working stability of the components inside the power supply box 20, and ensuring the display effect of the display module 30.

[0053] In some embodiments, please refer to Figure 2 and Figure 3 The first electrical connector 24 is configured as a socket, and the first electrical connector 24 extends toward the mounting frame 10. The first sealing member 40 is sleeved on the outer peripheral sidewall of the first electrical connector 24 to completely cover the outer peripheral sidewall of the first electrical connector 24.

[0054] In some embodiments, please refer to Figure 4 The display module 30 is a plate-shaped structure, including a housing 31, a lamp plate 32 disposed on the side of the housing 31 facing away from the mounting frame 10, and a second electrical connector 33 disposed on the side of the housing 31 facing away from the lamp plate 32, and the second electrical connector 33 is electrically connected to the lamp plate 32. The housing 31 is a plate-shaped structure, and a first annular groove 311 is formed on the side of the housing 31 facing the mounting frame 10. The second electrical connector 33 is disposed in the first annular groove 311.

[0055] In this embodiment, when the first electrical connector 24 and the second electrical connector 33 are mated, the first sealing member 40 is engaged within the first annular groove 311, and the multi-layered protrusions 41 abut against the inner wall of the first annular groove 311. Simultaneously, the first electrical connector 24 is partially housed within the first annular groove 311. Thus, by providing the first annular groove 311, when the first sealing member 40 is installed within it, the first sealing member 40 adheres more tightly to the socket housing and the second electrical connector 33 under pressure, effectively preventing moisture from entering the interior. Furthermore, when the multi-layered protrusions 41 on the first sealing member 40 abut against the inner wall of the first annular groove 311, each protrusion 41 constitutes an independent sealing barrier. Even if one layer wears or ages and fails, the other layers can continue to provide an effective seal, thereby effectively improving the sealing reliability of the first sealing member 40 to the display device 100.

[0056] In some embodiments, the flange portion 34 is circumferentially disposed on the outer periphery of the first annular groove 311, and the flange portion 34 is configured as an annular structure extending toward the mounting frame 10. A plurality of drain holes 341 are also provided on the sidewall of the flange portion 34, which can drain small amounts of water entering or surrounding the first annular groove 311 from the outside, preventing the continuous accumulation of small amounts of water in the first annular groove 311 and reducing the risk of electrical short circuits caused by water accumulation in the first annular groove 311. Furthermore, the plurality of drain holes 341 are disposed on the sidewall below the flange portion 34, allowing water that may accumulate inside or around the first annular groove 311 to flow out from the drain holes 34 under gravity, facilitating the drainage of water inside or around the first annular groove 311.

[0057] In some embodiments, multiple display modules 30 are provided, and the multiple display modules 30 are fixed to the front side of the mounting frame 10. Each display module 30 is correspondingly mounted on a mounting position 16. The light panel 32 on each display module 30 can be an LED light panel or a microLED light panel.

[0058] In this embodiment, the second electrical connector 33 is a rectangular structure composed of multiple pins. The multiple pins on the second electrical connector 33 are used to insert into the first electrical connector 24 to realize the electrical connection between the electrical connection module 80 and the display module 30.

[0059] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A display device, characterized in that, include: Mounting framework; A power supply box is mounted on the mounting frame. The power supply box includes a box body, an electrical connection module disposed within the box body, and a first electrical connector electrically connected to the electrical connection module. A first sealing element is sleeved around the periphery of the first electrical connector. A display module is disposed on the surface of the mounting frame. The display surface of the display module is arranged away from the mounting frame. A second electrical connector is provided on the side of the display module away from the display surface. The first electrical connector can be electrically connected to the second electrical connector. The first sealing member can abut against the side wall of the second electrical connector. The display module has a flange on the side away from the display surface. The flange extends in the direction away from the display surface and is arranged in a ring around the periphery of the second electrical connector. When the first electrical connector and the second electrical connector are in contact, the flange can abut against the side wall of the housing around the first electrical connector.

2. The display device according to claim 1, characterized in that, The display module includes a housing and a lamp plate disposed on the housing away from the mounting frame. The second electrical connector is disposed on the side of the lamp plate away from the display surface, and the flange is disposed on the side of the housing away from the lamp plate.

3. The display device according to claim 2, characterized in that, The housing has a first annular groove on the side away from the lamp plate. The second electrical connector is disposed in the first annular groove. The flanged portion surrounds and protrudes from the outer periphery of the first annular groove. When the first electrical connector and the second electrical connector are electrically connected, the first sealing member is disposed in the first annular groove and abuts against the inner wall of the first annular groove.

4. The display device according to claim 1, characterized in that, A drain outlet is provided on the side wall of the flanged part, and the drain outlet is located on the lower side wall of the flanged part.

5. The display device according to claim 3, characterized in that, The first seal has a plurality of protruding edges circumferentially arranged around its outer periphery. The plurality of protruding edges are spaced apart along the thickness direction of the first seal. When the first seal is placed in the first annular groove, the plurality of protruding edges abut against the inner sidewall of the first annular groove.

6. The display device according to claim 3, characterized in that, A second annular groove is provided on the side of the box body facing the mounting frame. The second annular groove surrounds the first electrical connector. A second sealing member is provided in the second annular groove. An abutment portion is provided between the flange and the first annular groove. When the first electrical connector and the second electrical connector are mated, the second sealing member can abut against the surface of the abutment portion.

7. The display device according to claim 1, characterized in that, The box includes a main body disposed on the mounting frame and a first cover disposed on the side of the main body facing the mounting frame. The main body has a first opening on the side facing the first cover. The first cover can connect to the main body to close the first opening. The side wall of the first cover facing the main body has a third annular groove. A third sealing element is engaged in the third annular groove. When the main body is connected to the first cover, the third sealing element fits against the edge of the first opening.

8. The display device according to claim 7, characterized in that, The box body also includes a second cover located on the side of the main body away from the first cover. The main body has a second opening on the side facing the second cover. The second cover can close the second opening. A fourth annular groove is provided on the side wall of the second cover facing the main body. A fourth sealing element is engaged in the fourth annular groove. When the second cover is connected to the main body, the fourth sealing element fits against the edge of the second opening.

9. The display device according to claim 1, characterized in that, The power supply box is configured as one or more, and the length direction of the power supply box is consistent with the length direction or width direction of the mounting frame. The multiple power supply boxes are spaced apart on the mounting frame and electrically connected in sequence, and are located at the same height position of the mounting frame.

10. The display device according to claim 1, characterized in that, The display device includes a plurality of display modules, and the power supply box is provided with a plurality of first electrical connectors corresponding to the number of display modules. A first electrical connector is electrically connected to a second electrical connector on a display module, so that a power supply box can simultaneously connect to a plurality of display modules.

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