LED display screen box body rear cover and LED display screen

Abstract

The utility model discloses an LED display screen box body rear cover and an LED display screen, the rear cover is used for being installed on the back face of an LED display unit, the rear cover comprises a rear cover main body, the rear cover main body is provided with a containing cavity protruding in the direction away from the LED display unit, and the peripheral side wall of the containing cavity is provided with a handle hole; a handle reinforcing rib is fixedly arranged on the inner wall of the accommodating cavity corresponding to the edge of the handle hole; the upper reinforcing structure and the lower reinforcing structure are located on the upper side and the lower side of the containing cavity respectively and connected between the outer circumferential side wall of the containing cavity and the rear cover body. The auxiliary reinforcing structures, the upper reinforcing structure and the lower reinforcing structure are arranged at intervals, and the auxiliary reinforcing structures are connected between the outer circumferential side wall of the containing cavity and the rear cover body. The handle is integrally molded, has the advantage of mass production price, has the function of the handle, and ensures the stress strength of the handle part through the handle reinforcing rib structure.

Description

Technical Field

[0001] This utility model discloses an LED display screen, particularly an LED display screen cabinet back cover and an LED display screen, belonging to the technical field of LED display equipment. Background Technology

[0002] Currently, most LED display screen back covers on the market are made of aluminum or die-cast aluminum alloy, primarily serving to support and protect the LED display screen. Furthermore, the external design of the LED display screen back covers is purely decorative. Because the back covers of LED displays are made of die-cast aluminum, even the handles on the back covers are made of die-cast aluminum. This inherent structural characteristic leads to certain unavoidable drawbacks: firstly, die-cast aluminum back covers have long processing times and are difficult to manufacture; secondly, the entire back cover is expensive and heavy. Summary of the Invention

[0003] In view of the above-mentioned shortcomings of the existing LED display screen back cover, which is made of die-cast aluminum, resulting in long processing time and high difficulty, this utility model provides an LED display screen cabinet back cover, which is a plastic shell made of one-piece mold and has a special structural design, which can solve the problems of long processing time and high difficulty of LED cabinet back cover, and is more convenient to carry and transport.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a back cover for an LED display screen, the back cover being used to install on the back of an LED display unit, the back cover comprising:

[0005] The back cover body has a receiving cavity protruding in the direction away from the LED display unit. A handle hole is provided on the outer peripheral side wall of the receiving cavity, and a handle reinforcing rib is fixedly provided on the inner wall of the receiving cavity corresponding to the edge of the handle hole.

[0006] The upper and lower reinforcing structures are located on the upper and lower sides of the accommodating cavity, respectively, and are connected between the outer peripheral sidewall of the accommodating cavity and the rear cover body.

[0007] Multiple auxiliary reinforcement structures are spaced apart from the upper and lower reinforcement structures and connected between the outer peripheral sidewall of the accommodating cavity and the rear cover body.

[0008] An LED display screen includes a back cover, an LED display unit, and a controller as described above. The LED display unit includes an LED display module and a fixed bracket fixedly installed on the back of the LED display module. The controller is fixedly installed on the fixed bracket. The back cover is installed on the LED display unit. The accommodating cavity is used to accommodate the controller. The power interface and signal interface on the controller are respectively provided corresponding to the power interface opening and signal interface opening on the accommodating cavity.

[0009] The technical solution adopted by this utility model to solve its technical problem further includes:

[0010] Both the upper and lower reinforcing structures include an isosceles trapezoidal structure and a rectangular structure connecting the isosceles trapezoidal structure and the accommodating cavity. The base dimension of the isosceles trapezoidal structure near the edge of the rear cover body is smaller than the base dimension near the accommodating cavity; and / or,

[0011] The upper and lower reinforcing structures are inclined from the outside to the inside.

[0012] The accommodating cavity is rectangular, and the plurality of auxiliary reinforcement structures are respectively disposed at the four corners of the accommodating cavity; and / or,

[0013] The auxiliary reinforcement structure is trapezoidal, with the base dimension of the trapezoidal structure near the edge of the rear cover body being larger than the base dimension of the trapezoidal structure near the accommodating cavity; and / or,

[0014] The auxiliary reinforcement structure is inclined from the inside out.

[0015] The handle holes are in at least one set, each set including multiple handle holes, and adjacent handle holes are spaced apart. Each handle hole has a handle reinforcing rib at two symmetrical edges, and adjacent handle holes are provided with handle reinforcing ribs.

[0016] The accommodating cavity is positioned at the middle of the rear cover body; and / or,

[0017] The circumferential sidewall of the accommodating cavity is provided with a power interface opening and a signal interface opening, and an interface mark is provided at the position corresponding to the power interface opening and the signal interface opening.

[0018] The rear cover body has multiple screw holes, and these screw holes are arranged circumferentially around the receiving cavity.

[0019] The inner side of the rear cover body is provided with screw hole inner bosses corresponding to the screw holes around the screw holes. The circumferential sidewalls of the screw hole inner bosses are provided with multiple screw hole reinforcing ribs, which are evenly distributed along the circumference of the screw hole inner bosses.

[0020] The rear cover body is provided with multiple clearance slots, which are used to avoid the magnet mounting position on the back of the LED display unit.

[0021] The inner side of the rear cover body is provided with a reinforcing protrusion corresponding to the edge of the clearance groove; and / or,

[0022] The inner side of the four perimeters of the back cover body is provided with a ring-shaped raised edge.

[0023] The rear cover body is provided with a locking buckle structure.

[0024] The rear cover body has a locking notch corresponding to the position of the locking buckle structure, and the locking buckle structure is disposed within the locking notch.

[0025] The locking buckle structure includes a locking buckle support and a locking buckle. The locking buckle is fixedly mounted on the locking buckle support, and its position corresponds to the inner side of the rear cover body.

[0026] A release handle is fixedly provided on the locking buckle support, and the release handle is provided on the outer side of the rear cover body; and / or,

[0027] The back cover body is provided with a limiting buckle, and the limiting buckle corresponds to a hook provided on the inner side of the back cover body; and / or,

[0028] The back cover body is provided with anti-deformation buckles, which are protrusions with a trapezoidal, arc-shaped, or a combination of arc and trapezoidal cross-sections provided on the side of the back cover body.

[0029] The LED display screen also includes connecting screws. The back cover body has screw holes, and the connecting screws pass through the screw holes to connect with the LED display unit. There is a gap between the screw head of the connecting screw and the back cover body.

[0030] The beneficial effects of this utility model are as follows: This utility model adopts an integrated mold molding process, which has the advantage of mass production price, and has a built-in handle function. The handle is reinforced with a rib structure to ensure the strength of the handle part under stress. This utility model uses a limiting buckle structure to prevent the back cover from loosening. The locking buckle structure can prevent the back cover from shaking too much. The anti-deformation buckle is used to prevent warping and deformation due to the excessive size of the back cover. The stepped screws in this utility model have a clearance fit with the back cover, which allows for a certain amount of looseness and can prevent the back cover from deforming and becoming uneven due to thermal expansion.

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0032] Figure 1 This is a front view structural diagram of the present utility model.

[0033] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0034] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0035] Figure 4 This is a schematic diagram of the right-side structure of this utility model.

[0036] Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0037] Figure 6 This is a top view of the structure of this utility model.

[0038] Figure 7 This is a schematic diagram of the structure of this utility model from a bottom view.

[0039] Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure of BB.

[0040] Figure 9 This is a three-dimensional structural diagram of the present invention.

[0041] Figure 10 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0042] Figure 11 for Figure 10 A magnified schematic diagram of the C-shaped structure.

[0043] Figure 12 for Figure 10 A magnified schematic diagram of the structure of part D.

[0044] Figure 13 for Figure 10A magnified schematic diagram of the structure of part E in the middle.

[0045] Figure 14 for Figure 10 A magnified schematic diagram of the middle F section.

[0046] Figure 15 for Figure 10 A magnified schematic diagram of the structure of part G.

[0047] Figure 16 for Figure 10 A magnified schematic diagram of the middle H section.

[0048] Figure 17 This is a three-dimensional structural diagram of the LED display module for applying this utility model.

[0049] Figure 18 This is a three-dimensional structural diagram of the LED display module using this utility model from another perspective.

[0050] Figure 19 This is a front view structural diagram of the LED display screen of this utility model.

[0051] Figure 20 for Figure 19 Schematic diagram of structure II.

[0052] Figure 21 for Figure 19 A schematic diagram of the JJ structure.

[0053] Figure 22 for Figure 19 A schematic diagram of the KK structure.

[0054] Figure 23 for Figure 19 A schematic diagram of the LL structure.

[0055] Figure 24 This is a three-dimensional structural diagram of the LED display screen of this utility model.

[0056] Figure 25 This is a three-dimensional structural diagram of the LED display screen of this utility model from another perspective.

[0057] Figure 26 This is a schematic diagram of the exploded structure of the LED display screen of this utility model.

[0058] In the diagram, 1-back cover, 11-back cover body, 12-accommodating cavity, 13-upper reinforcing structure, 14-lower reinforcing structure, 15-auxiliary reinforcing structure, 16-avoidance groove, 17-screw hole, 18-handle hole, 19-locking buckle notch, 110-locking buckle, 111-release handle, 112-limiting buckle, 113-crossbeam, 114-handle reinforcing rib, 115-screw hole inner boss, 116-screw hole reinforcing rib, 117-reinforcing protrusion, 118-annular protrusion, 119-anti-deformation buckle, 120-locking buckle support, 2-LED display module, 3-fixed bracket, 4-controller, 5-magnet base. Detailed Implementation

[0059] This embodiment is a preferred embodiment of the present invention. All other embodiments that are the same as or similar to this embodiment in principle and basic structure are within the protection scope of the present invention.

[0060] Since this utility model mainly protects the back cover of an LED display cabinet, the outer surface of the back cover is defined as the front of the back cover, and the corresponding view is defined as the front view of the back cover. The up, down, left and right directions in this utility model are defined by the direction in which it is used (that is, the direction shown in the front view).

[0061] Please refer to the appendix for details. Figure 1 To be continued Figure 18This utility model mainly protects an LED display screen back cover, which is used to install on the back of the LED display unit. It is injection molded using an integrated mold and mainly includes a back cover body 11. In this embodiment, the back cover body 11 is the part of the back cover other than other structural components. The back cover body 11 is provided with a receiving cavity 12 for accommodating the controller inside the display screen. In this embodiment, the receiving cavity 12 is a rectangular cavity protruding in the direction away from the LED display unit. The receiving cavity 12 is set at the middle position of the back cover body 11. In specific implementation, the shape and opening position of the receiving cavity 12 can be specifically set according to actual needs. In this embodiment, a power interface opening and a signal interface opening are provided on the outer peripheral sidewall of the accommodating cavity 12. These openings correspond to the positions of the power interface and signal interface on the controller, respectively. Since the power interface and signal interface on the controller are located on the side in this embodiment, the power interface opening and signal interface opening are also located on the side, minimizing the overall thickness of the LED display screen during use and preventing interference from power and signal cables. In practical implementation, if the thickness is not a concern, the power interface opening and signal interface opening can also be located on the front of the accommodating cavity 12. In this embodiment, interface markings (not shown in the figure) are provided at the positions of the power interface opening and signal interface opening to indicate the interface location and function. The interface markings can be located on the back cover body 11 or on the accommodating cavity 12, depending on visibility.

[0062] In this embodiment, the back cover body 11 is provided with an upper reinforcing structure 13 and a lower reinforcing structure 14, which can prevent the back cover body 11 from having a large area of ​​flat plate structure, thereby ensuring the structural strength stability of the back cover body 11 and minimizing deformation or damage during use. The upper reinforcing structure 13 is positioned above the accommodating cavity 12, and the lower reinforcing structure 14 is positioned below the accommodating cavity 12. Both the upper reinforcing structure 13 and the lower reinforcing structure 14 are isosceles trapezoidal structures. The base dimension of the isosceles trapezoidal structure on the side near the edge of the rear cover body 11 is smaller than the base dimension on the side near the accommodating cavity 12. That is, the base dimension on the side near the edge of the rear cover body 11 is shorter, and the base dimension on the side near the accommodating cavity 12 is longer. Both the upper reinforcing structure 13 and the lower reinforcing structure 14 include an isosceles trapezoidal structure and a rectangular structure connecting the isosceles trapezoidal structure and the accommodating cavity 12. A rectangular structure is formed by vertically extending the bottom of the isosceles trapezoidal structure. Alternatively, it can be understood as cutting off a portion of the two bases of the isosceles trapezoid in the vertical direction. In specific implementation, the upper reinforcing structure 13 and the lower reinforcing structure 14 can also adopt other forms. The basic design principle is to minimize the presence of large flat plate structures on the rear cover body 11. In this embodiment, the upper reinforcing structure 13 and the lower reinforcing structure 14 are inclined from the outside to the inside, that is, the thickness of the upper reinforcing structure 13 and the lower reinforcing structure 14 gradually thins from near the outer edge to the accommodating cavity 12, and has a smooth transition. In this embodiment, both the upper reinforcing structure 13 and the lower reinforcing structure 14 are provided on the rear cover body 11. In specific implementation, only the upper reinforcing structure 13 or only the lower reinforcing structure 14 may be provided.

[0063] In this embodiment, the back cover body 11 is provided with multiple sets of auxiliary reinforcement structures 15. There are four sets of auxiliary reinforcement structures 15, which are respectively set at the four corners of the accommodating cavity 12. In specific implementation, the auxiliary reinforcement structures 15 can also be set with one, two, three or more sets according to actual needs, and the setting position can also be adjusted according to actual needs. In this embodiment, the auxiliary reinforcement structure 15 has a trapezoidal structure. The bottom edge of the trapezoidal structure near the edge of the back cover body 11 is larger than the bottom edge near the accommodating cavity 12. That is, the bottom edge near the edge of the back cover body 11 is longer, and the bottom edge near the accommodating cavity 12 is shorter. The auxiliary reinforcement structure 15 is inclined from the inside to the outside, that is, the thickness of the auxiliary reinforcement structure 15 gradually thins from the position near the accommodating cavity 12 to the outer edge, and has a smooth transition.

[0064] In this embodiment, handle holes 18 are respectively provided on the left and right sides of the accommodation cavity 12, facilitating the lifting and carrying of the rear cover 1 and the LED display screen using the rear cover 1 at the handle holes 18. Specifically in implementation, the handle holes 18 can also be only opened on the left side or the right side of the accommodation cavity 12, or can be opened on the upper side and / or the lower side of the accommodation cavity 12 according to actual needs. In this embodiment, the handle holes 18 are at least one group, each group includes multiple handle holes 18, and the adjacent handle holes 18 are spaced apart. Among them, handle strengthening ribs 114 are provided at two edges symmetrical to each handle hole 18, and handle strengthening ribs 114 are also provided between the adjacent handle holes 18. In this embodiment, taking two groups of handle holes 18 as an example, each group of handle holes includes two handle holes 18. The handle strengthening ribs 114 at two edges symmetrical to the handle hole 18 can increase the strength at the upper and lower ends of the handle hole 18, effectively preventing damage during use.

[0065] In this embodiment, a cross beam 113 is fixedly provided at the middle position of the handle hole 18, making the handle hole 18 in a "day" shape. A handle strengthening rib 114 is fixedly provided at the position of the accommodation cavity 12 corresponding to the cross beam 113, increasing the strength at the position of the cross beam 113 and further preventing damage during use.

[0066] In this embodiment, screw holes 17 are provided on the rear cover main body 11 for fixedly installing the rear cover 1 and the fixing bracket 3 in the LED display screen together. Four screw holes 17 are provided, corresponding to the four corner positions of the accommodation cavity 12 respectively. Specifically in implementation, the number and positions of the screw holes 17 can be specifically set according to actual needs. In this embodiment, screw hole inner bosses 115 are provided around the screw holes 17 on the inner side of the rear cover main body 11, which can both support a certain distance between the rear cover main body 11 and the fixing bracket and enhance the strength of the rear cover main body 11 at the position of the screw holes 17, preventing damage during use. In this embodiment, screw hole strengthening ribs 116 are provided on the circumferential side wall of the screw hole inner boss 115, further enhancing the mechanical strength at the position of the screw holes 17. In this embodiment, six screw hole strengthening ribs 116 are provided, and the six screw hole strengthening ribs 116 are evenly distributed in a ring around the screw hole inner boss 115. Specifically in implementation, the setting positions and forms of the screw hole strengthening ribs 116 can be specifically set according to actual needs.

[0067] In this embodiment, clearance grooves 16 are respectively provided on the left and right sides of the back cover body 11. The clearance grooves 16 are used to avoid the LED display module with magnet mounting positions on the back of the LED display unit. In this embodiment, there are eight clearance grooves 16, four on the left and four on the right sides of the back cover body 11. The two clearance grooves 16 in the middle on the left side of the back cover body 11 are U-shaped, and the clearance grooves 16 at the upper and lower ends on the left side of the back cover body 11 are half U-shaped, that is, one side of the U-shape, or a J-shaped structure. In this embodiment, the inner edge of the clearance groove 16 structure is provided with reinforcing protrusions 117 to enhance the mechanical strength at the location of the clearance groove 16. In specific implementation, the specific number of clearance grooves 16 is set according to the number of magnet mounting positions on the back of the LED display unit.

[0068] In this embodiment, an annular protrusion 118 is provided on the inner side of the four perimeters of the back cover body 11, which can enhance the mechanical strength of the four perimeters of the back cover body 11. The annular protrusion 118 overlaps with the reinforcing protrusion 117 at the position of the relief groove 16. In this utility model, the annular protrusion 118 corresponding to the position of the relief groove 16 is defined as the reinforcing protrusion 117.

[0069] In this embodiment, the rear cover body 11 is provided with a locking buckle structure. Four sets of the locking buckle structure are provided, with two sets on each of the upper and lower sides of the rear cover body 11. In specific implementation, the number and position of the locking buckle structures can be adjusted according to actual needs. Please refer to the attached diagram for details. Figure 11 In this embodiment, a locking buckle notch 19 is provided on the back cover body 11 at the position corresponding to the locking buckle structure. The locking buckle structure is set in the locking buckle notch 19 so that it does not protrude from the edge of the back cover body 11. In specific implementation, other forms can also be adopted according to actual needs. The locking buckle structure mainly includes a locking buckle support part 120 and a locking buckle 110. The locking buckle 110 is fixedly set on the locking buckle support part 120. The setting position of the locking buckle 110 corresponds to the inner side of the back cover body 11. One end of the locking buckle support part 120 is fixedly set on the back cover body 11. The locking buckle 110 can be engaged with the back cover body 11 through the locking buckle support part 120. In this embodiment, a release handle 111 is also fixedly provided on the locking buckle support part 120. The release handle 111 is provided on the outer side of the rear cover body 11. The locking buckle support part 120 can be pressed by the release handle 111 to realize the locking and releasing of the locking buckle 110.

[0070] In this embodiment, the rear cover body 11 is provided with limiting buckles 112. Four sets of limiting buckles 112 are provided, with two sets on each of the upper and lower sides of the rear cover body 11. In specific implementation, the number and position of the limiting buckles 112 can be adjusted according to actual needs. Please refer to the attached document for details. Figure 12 In this embodiment, the limiting buckle 112 is provided with a hook on the inner side of the back cover body 11, and the limiting buckle 112 can be snapped onto the LED display module by the hook.

[0071] In this embodiment, the rear cover body 11 is provided with anti-deformation buckles 119. Four sets of anti-deformation buckles 119 are provided, with two sets on each of the left and right sides of the rear cover body 11. In specific implementation, the number and position of the anti-deformation buckles 119 can be adjusted according to actual needs. Please refer to the attached document for details. Figure 16 In this embodiment, the anti-deformation buckle 119 is a protrusion with a trapezoidal, arc-shaped or a combination of arc and trapezoidal cross-section provided on the side of the back cover body 11, which can be snapped onto the LED display module.

[0072] During assembly, the back cover is aligned with the LED display module (also known as the housing) and pressed down. The clearance groove 16 corresponds to the magnet seat 5 on the LED display module. When pressing, first press the release handle 111. After the limit buckle 112 and the anti-deformation buckle 119 are engaged, release the release handle 111 to make the locking buckle 110 fasten the LED display module. The back cover is then fixedly installed together with the fixing bracket 3 inside the display screen at the screw hole 17 by the stepped screw.

[0073] This utility model also protects an LED display screen, which includes a back cover 1, an LED display module 2, a fixing bracket 3, and a controller 4 as described above. The fixing bracket 3 is fixedly installed on the back of the LED display module 2, and the controller 4 is fixedly installed on the fixing bracket 3. The back cover 1 is installed on the LED display module 2. During installation, the receiving cavity 12 is set at the position corresponding to the controller 4. The power interface and signal interface on the controller 4 are respectively set at the power interface opening and signal interface opening on the receiving cavity 12.

[0074] In this embodiment, the limiting buckle 112, the anti-deformation buckle 119, and the locking buckle 110 on the back cover 1 are respectively snapped onto the LED display module 2. They are fixed together with the fixing bracket 3 at the screw hole 17 on the back cover 1 by step screws. The step screws and the screw hole 17 are clearance fit to prevent the LED display module from being squeezed and deformed due to thermal expansion or other reasons, so that the display surface is uneven and the display effect is affected. The clearance groove 16 is set corresponding to the magnet seat 5 on the LED display module 2.

[0075] In this embodiment, the width of the clearance groove 16 is greater than the diameter of the magnet base 5. At the same time, the clearance groove 16 has a "U" or semi-"U" shaped structure and can extend and retract left and right. That is, a certain amount of movable gap is maintained between the magnet base 5 and the back cover 1. There is a certain size of loose space around the magnet base 5 to prevent the LED display module from being squeezed and deformed due to thermal expansion or other reasons, so that the display surface is uneven and the display effect is affected.

[0076] This utility model is formed using an integrated mold, offering advantages in mass production price, and features a built-in handle. The handle's strength is ensured by a stepped screw structure. A limiting buckle structure prevents the back cover from loosening, and a locking buckle structure prevents excessive back cover movement. An anti-deformation buckle prevents warping and deformation due to an oversized back cover. The stepped screws and back cover have a clearance fit, allowing for a certain amount of looseness to prevent the back cover from deforming or becoming uneven due to thermal expansion.

Claims

1. A rear cover for an LED display screen cabinet, characterized in that: The rear cover is used to mount on the back of the LED display unit, and the rear cover includes: The back cover body (11) has a receiving cavity (12) protruding in the direction away from the LED display unit. A handle hole (18) is provided on the outer peripheral side wall of the receiving cavity (12). A handle reinforcing rib (114) is fixedly provided on the inner wall of the receiving cavity (12) at the edge corresponding to the handle hole (18). The upper reinforcing structure (13) and the lower reinforcing structure (14) are located on the upper and lower sides of the accommodating cavity (12) respectively, and are connected between the outer peripheral sidewall of the accommodating cavity (12) and the rear cover body (11); Multiple auxiliary reinforcement structures (15) are spaced apart from the upper reinforcement structure (13) and the lower reinforcement structure (14) and are connected between the outer peripheral sidewall of the accommodating cavity (12) and the rear cover body (11).

2. The LED display screen cabinet rear cover according to claim 1, characterized in that: Both the upper reinforcing structure (13) and the lower reinforcing structure (14) include an isosceles trapezoidal structure and a rectangular structure connecting the isosceles trapezoidal structure and the accommodating cavity (12). The base dimension of the isosceles trapezoidal structure near the edge of the rear cover body (11) is smaller than the base dimension near the accommodating cavity (12); and / or, The upper reinforcing structure (13) and the lower reinforcing structure (14) are inclined from the outside to the inside.

3. The LED display screen cabinet rear cover according to claim 1, characterized in that: The accommodating cavity (12) is rectangular, and multiple auxiliary reinforcement structures (15) are respectively disposed at the four corners of the accommodating cavity (12); and / or, The auxiliary reinforcement structure (15) is trapezoidal, and the bottom edge dimension of the trapezoidal structure near the edge of the rear cover body (11) is larger than the bottom edge dimension near the accommodating cavity (12); and / or, The auxiliary reinforcement structure (15) is inclined from the inside to the outside.

4. The LED display screen cabinet rear cover according to claim 1, characterized in that: The handle hole (18) is at least one set, each set includes multiple handle holes (18), and adjacent handle holes (18) are spaced apart. Each handle hole (18) has a handle reinforcing rib (114) at two symmetrical edges, and adjacent handle holes (18) are provided with handle reinforcing ribs (114).

5. The LED display screen cabinet rear cover according to claim 1, characterized in that: The accommodating cavity (12) is positioned at the middle of the rear cover body (11); and / or, The accommodating cavity (12) has a power interface opening and a signal interface opening on its circumferential sidewall, and an interface mark is provided at the position corresponding to the power interface opening and the signal interface opening.

6. The LED display screen cabinet rear cover according to claim 1, characterized in that: The rear cover body (11) is provided with a plurality of screw holes (17), and the plurality of screw holes (17) are arranged circumferentially around the receiving cavity (12). The inner side of the back cover body (11) is provided with screw hole inner bosses (115) around the screw holes (17). The circumferential sidewall of the screw hole inner bosses (115) is provided with multiple screw hole reinforcing ribs (116), and the multiple screw hole reinforcing ribs (116) are evenly distributed along the circumference of the screw hole inner bosses (115).

7. The LED display screen cabinet rear cover according to claim 1, characterized in that: The rear cover body (11) is provided with a plurality of clearance grooves (16), which are used to avoid the magnet mounting position on the back of the LED display unit. The inner side of the rear cover body (11) is provided with a reinforcing protrusion (117) corresponding to the edge of the relief groove (16); and / or, The inner side of the four perimeter of the rear cover body (11) is provided with a ring-shaped protrusion (118).

8. The LED display screen cabinet rear cover according to claim 1, characterized in that: The rear cover body (11) is provided with a locking buckle structure. The rear cover body (11) has a locking buckle notch (19) at the position corresponding to the locking buckle structure, and the locking buckle structure is disposed in the locking buckle notch (19). The locking buckle structure includes a locking buckle support part (120) and a locking buckle (110). The locking buckle (110) is fixedly disposed on the locking buckle support part (120), and the locking buckle (110) is disposed on the inner side of the rear cover body (11). A release handle (111) is fixedly provided on the locking buckle support (120), and the release handle (111) is provided on the outer side of the rear cover body (11); and / or, The rear cover body (11) is provided with a limiting buckle (112), and the limiting buckle (112) is provided with a hook corresponding to the inner side of the rear cover body (11); and / or, The back cover body (11) is provided with an anti-deformation buckle (119), which is a protrusion with a trapezoidal or arc-shaped or a combination of arc and trapezoidal cross-section provided on the side of the back cover body (11).

9. An LED display screen, characterized in that: The LED display screen includes a back cover (1) as described in any one of claims 1 to 8, an LED display unit and a controller (4). The LED display unit includes an LED display module (2) and a fixed bracket (3) fixedly installed on the back of the LED display module (2). The controller (4) is fixedly installed on the fixed bracket (3). The back cover (1) is installed on the LED display unit. The accommodating cavity (12) is used to accommodate the controller (4). The power interface and signal interface on the controller (4) are respectively set to correspond to the power interface opening and signal interface opening on the accommodating cavity (12).

10. The LED display screen according to claim 9, characterized in that: The LED display screen also includes connecting screws. The back cover body (11) is provided with screw holes (17). The connecting screws pass through the screw holes (17) and are connected to the LED display unit. There is a gap between the screw cap of the connecting screw and the back cover body (11).

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