Display module and display screen

Abstract

The invention relates to the technical field of outdoor display screens, and discloses a display module and a display screen, the display module comprises a mounting bottom shell, an LED lamp panel, a rear cover and a locking device, the LED lamp panel is mounted on the front side of the mounting bottom shell, and a maintenance hole penetrates through the LED lamp panel and the mounting bottom shell. The rear cover is connected to the rear side of the mounting bottom shell; and the locking device is arranged between the mounting bottom shell and the rear cover. The locking device comprises a dismounting and mounting shaft, a first locking piece and a second locking piece, the ends, close to each other, of the first locking piece and the second locking piece are matched with a transmission part on the dismounting and mounting shaft, the dismounting and mounting shaft rotates, and the transmission part drives the first locking piece and the second locking piece to move in the direction close to each other or away from each other. The rear cover is provided with an avoiding opening corresponding to the clamping part of one end, far away from each other, of the first locking piece and the second locking piece. The maintenance holes are arranged corresponding to the maintenance parts on the disassembly and assembly shaft, the maintenance ejector pins penetrate through the maintenance holes to apply force to the maintenance parts, the disassembly and assembly shaft can be made to rotate, and pre-maintenance of the display module with the small pixel pitch is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of outdoor display screens, and in particular to a display module and a display screen. Background Art

[0002] LED display screens are used in various occasions as the main carrier of media communication. The display modules of most LED display screens are fixed to the box frame by magnetic attraction and have the function of a safety lock of the display module to prevent the display module from accidentally falling.

[0003] Display modules need to be frequently disassembled and maintained, especially in the rental industry. When removing a display module, the user needs to not only overcome the attraction of the magnet, but also unlock the safety lock of the display module. Since the safety lock of the display module is located on the back of the display module, it is usually easier to unlock the safety lock from the back of the display module. However, rear maintenance requires the box frame to be disassembled before it can be carried out, which reduces the efficiency of disassembly and maintenance. Since front maintenance is more convenient, front maintenance is usually used for disassembly and maintenance.

[0004] In the prior art, the display module capable of front maintenance is to rotate the safety lock by passing a hexagonal wrench through the front maintenance hole in the display module. However, rotating the safety lock requires a certain torque, and the required hexagonal wrench has a larger outer diameter, and accordingly, the aperture of the front maintenance hole is also larger. Therefore, this front maintenance method is only applicable to display modules with a larger pixel pitch. For display modules with a smaller pixel pitch, a front maintenance hole with a larger aperture in the display module will affect the display effect of the display module, and front maintenance cannot be achieved. Summary of the invention

[0005] The object of the present invention is to provide a display module and a display screen, so as to realize the front maintenance of the display module with a smaller pixel pitch and improve the disassembly and assembly efficiency of the display screen.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The display module includes:

[0008] An installation bottom shell and an LED light board, wherein the LED light board is installed on the front side of the installation bottom shell, and a maintenance hole is provided through the LED light board and the installation bottom shell;

[0009] A rear cover connected to the rear side of the mounting bottom shell;

[0010] A locking device is arranged between the mounting bottom shell and the back cover, the locking device comprises a disassembly shaft, a first locking member and a second locking member, the disassembly shaft is provided with a transmission part and a maintenance part, the ends of the first locking member and the second locking member close to each other are both matched with the transmission part, and the disassembly shaft rotates, and the transmission part drives the first locking member and the second locking member to move in a direction close to each other or away from each other; the ends of the first locking member and the second locking member far away from each other are both provided with a clamping part, and the back cover is provided with an avoidance opening corresponding to the clamping part;

[0011] The maintenance hole is arranged corresponding to the maintenance part, and the maintenance ejector pin passes through the maintenance hole to apply force to the maintenance part, so that the disassembly shaft can rotate.

[0012] As an optional scheme of the display module, the maintenance hole includes an unlocking hole and a locking hole, the unlocking hole and the locking hole are arranged at intervals, the maintenance part includes an unlocking plane and a locking plane, the unlocking plane and the locking plane are arranged at preset angles along the circumferential direction of the disassembly and assembly axis; the unlocking hole can correspond to the unlocking plane; the locking hole can correspond to the locking plane.

[0013] As an optional solution of the display module, the maintenance part further includes a connecting arc surface for connecting the unlocking plane and the locking plane, and a first limiting groove is provided at one end of the connecting arc surface close to the unlocking plane, and a second limiting groove is provided at one end of the connecting arc surface close to the locking plane;

[0014] A limiting protrusion is provided on one side of the mounting bottom shell close to the disassembly and assembly axis, and the limiting protrusion is located between the unlocking hole and the locking hole. When the limiting protrusion slides into the first limiting groove, the unlocking hole corresponds to the unlocking plane; when the limiting protrusion slides into the second limiting groove, the locking hole corresponds to the locking plane.

[0015] As an optional solution of the display module, two first support blocks are arranged on the mounting bottom shell at intervals along the extending direction of the disassembly axis, and a first support groove is arranged on a side of the first support block away from the mounting bottom shell;

[0016] Two second support blocks are arranged on the rear cover at intervals along the extension direction of the disassembly and assembly axis, a second support groove is arranged on the side of the second support block away from the rear cover, the first support groove and the second support groove are connected to form a support hole, the disassembly and assembly axis is supported in the two support holes; the maintenance part is located between the two support holes.

[0017] As an optional solution for the display module, two limiting rings are further provided on the disassembly and assembly axis, and the two limiting rings are respectively provided on both sides of the maintenance part, and the sides of the two limiting rings that are away from each other are respectively abutted against the sides of the two supporting holes that are close to each other.

[0018] As an optional scheme of the display module, the transmission part includes a gear structure arranged on the outer periphery of the disassembly and assembly shaft, a first rack structure is provided at one end of the first locking member close to the second locking member, and a second rack structure is provided at one end of the second locking member close to the first locking member, the first rack structure is located on a side of the gear structure close to the back cover and is meshed with the gear structure; the second rack structure is located on a side of the gear structure close to the mounting bottom shell and is meshed with the gear structure.

[0019] As an optional solution of the display module, the gear structure, the first rack structure, and the second rack structure are each provided with two in one-to-one correspondence, and the maintenance part is arranged between the two gear structures.

[0020] As an optional solution of the display module, the locking device further includes an operating handle, the open end of the operating handle is connected to the disassembly shaft, and the two gear structures are located outside the open end of the operating handle;

[0021] The rear cover is provided with an avoidance groove corresponding to the operating handle.

[0022] As an optional solution of the display module, the maintenance hole includes a first hole and a second hole that are concentrically arranged and connected, the first hole is provided on the LED light board, the second hole is provided on the mounting bottom shell, the inner diameter of the first hole is equal to the outer diameter of the maintenance ejector pin, and the inner diameter of the second hole is greater than the inner diameter of the first hole;

[0023] A convex column abutting against the LED light board is arranged on one side of the mounting bottom shell close to the LED light board, and the second hole is arranged on the convex column.

[0024] A display screen comprises a housing and a display module as described in any of the above schemes, wherein the housing is provided with a clamping position for clamping with the clamping part.

[0025] Beneficial effects of the present invention:

[0026] The display module provided by the present invention is provided with a maintenance hole penetrating the LED light board and the mounting bottom shell, and the locking device is provided between the mounting bottom shell and the back cover. The transmission part on the disassembly shaft cooperates with the end of the first locking member and the second locking member that is close to each other. When the disassembly shaft rotates, the transmission part can drive the first locking member and the second locking member to move in a direction close to each other or away from each other. When the first locking member and the second locking member move in a direction away from each other, the clamping part at the end of the first locking member and the second locking member that is away from each other can pass through the avoidance opening on the back cover and clamp with the clamping position on the box body, thereby locking the display module and the box body. When the first locking member and the second locking member move in a direction close to each other, the clamping part and the clamping position are disengaged, thereby unlocking the display module and the box body. The maintenance hole is provided corresponding to the maintenance part, and the maintenance ejector pin passes through the maintenance hole to apply force to the maintenance part, which can rotate the disassembly shaft, thereby driving the first locking member and the second locking member to move in a direction close to each other or away from each other, and realizing rapid unlocking and locking. The maintenance ejector pin only needs to apply a force perpendicular to the direction of the LED light board to the maintenance part without applying a torque, so the aperture of the maintenance hole does not need to be too large, and is suitable for display modules with smaller pixel pitches. The display module can realize front maintenance of display modules with smaller pixel pitches, thereby improving the disassembly and maintenance efficiency of the display device.

[0027] The display screen provided by the present invention comprises a box body and the above-mentioned display module. The locking part of the locking device in the display module is locked with the locking position on the box body, which can fix the display module on the box body to prevent the display module from accidentally falling. The display module can realize front maintenance of the display module through the maintenance hole, and is suitable for front maintenance of display modules with smaller pixel pitches, thereby improving the disassembly and maintenance efficiency of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is an exploded schematic diagram of a cabinet and a display module provided by an embodiment of the present invention;

[0029] Figure 2 is a front schematic diagram of a box provided by an embodiment of the present invention;

[0030] Figure 3 is a schematic diagram of a display module provided by an embodiment of the present invention when it is installed on a box body and not locked;

[0031] Figure 4 is a schematic diagram of a display module provided by an embodiment of the present invention when it is installed on a box and locked;

[0032] Figure 5 is a schematic diagram of the structure of a display module provided by an embodiment of the present invention;

[0033] Figure 6 is an exploded view of a display module provided by an embodiment of the present invention;

[0034] Figure 7 is a cross-sectional view of the locking device in the display module provided by an embodiment of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the operating handle and the disassembly shaft provided by an embodiment of the present invention;

[0036] Fig. 9 is a cross-sectional view of unlocking a display module by a maintenance ejector pin provided in an embodiment of the present invention;

[0037] Fig.10 It is a cross-sectional view of locking a display module by a maintenance ejector pin provided in an embodiment of the present invention.

[0038] In the figure:

[0039] 100, box body; 101, magnet; 102, snap-fit ​​position;

[0040] 1. Install the bottom shell; 11. convex column; 12. limit protrusion; 13. first support block; 131. first support groove; 14. iron sheet;

[0041] 2. LED light board;

[0042] 3. Maintenance hole; 31. Unlocking hole; 32. Locking hole; 301. First hole; 302. Second hole;

[0043] 4. rear cover; 41. first avoidance opening; 42. second avoidance opening; 43. avoidance groove; 44. groove;

[0044] 5. Locking device; 51. Disassembly and assembly shaft; 511. Gear structure; 512. Maintenance part; 5121. Unlocking plane; 5122. Locking plane; 5123. Connecting arc surface; 5124. First limiting groove; 5125. Second limiting groove; 513. Limiting ring; 52. First locking member; 521. First clamping part; 522. First rack structure; 53. Second locking member; 531. Second clamping part; 532. Second rack structure; 54. Operating handle;

[0045] 6. Maintain the ejector pin;

[0046] 7. Screws. DETAILED DESCRIPTION

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0048] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0049] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0052] like Figure 1-Figure 4 As shown, this embodiment provides a display screen, including a box body 100 and a display module. The box body 100 is a frame structure, and multiple display module installation positions are arranged therein. A display module is installed on each display module installation position, which is suitable for outdoor large display screens.

[0053] A plurality of magnets 101 are arranged at intervals in the circumferential direction on the front side of the display module installation position. Accordingly, a plurality of iron sheets 14 magnetically connected to the magnets 101 are arranged in the circumferential direction of the display module to magnetically connect the display module to the display module installation position.

[0054] In order to prevent the display module from accidentally falling due to the disappearance of the magnetism of the magnet 101, the display module installation position is further provided with a snap-fit ​​position 102 for snapping with the display module to achieve a mechanical connection to prevent the display module from accidentally falling.

[0055] The display modules of large outdoor display screens need to be frequently disassembled and maintained, especially rental display screens. During disassembly and maintenance, it is necessary to disengage the display module from the box 100, and then remove the display module from the front side of the display screen through the suction cup. In order to improve the efficiency of disassembly and assembly of the display module, front maintenance is usually adopted. In the prior art, for display modules that can be front-maintained, a hexagonal wrench needs to be inserted into the front maintenance hole to turn the safety lock. Since turning the safety lock requires a certain torque, the outer diameter of the hexagonal wrench required is relatively large, and accordingly, the aperture of the front maintenance hole is also relatively large. For display modules with smaller pixel pitches, a front maintenance hole with a larger aperture in the display module will affect the display effect of the display module, and front maintenance cannot be achieved.

[0056] In order to solve the above technical problems, Figure 5-Figure 7 As shown, the present embodiment provides a display module, which is applied to the above-mentioned display screen, and the display module includes a mounting base shell 1, an LED light board 2, a back cover 4 and a locking device 5. The LED light board 2 is mounted on the front side of the mounting base shell 1, and a maintenance hole 3 is provided through the LED light board 2 and the mounting base shell 1. The back cover 4 is connected to the rear side of the mounting base shell 1, and the area of ​​the back cover 4 is smaller than the area of ​​the mounting base shell 1, and is fixed to the center position of the mounting base shell 1 by screws 7. An iron sheet 14 for magnetically connecting with the magnet 101 of the box body 100 is provided in the circumference of the mounting base shell 1. The locking device 5 is provided between the mounting base shell 1 and the back cover 4, and the mechanical connection between the display module and the box body 100 is realized by the locking device 5 cooperating with the snap-in position 102 on the box body 100 to prevent the display module from accidentally falling.

[0057] The locking device 5 includes a disassembly shaft 51, a first locking member 52 and a second locking member 53. The disassembly shaft 51 is provided with a transmission part and a maintenance part 512. The ends of the first locking member 52 and the second locking member 53 that are close to each other are both matched with the transmission part. When the disassembly shaft 51 rotates, the transmission part drives the first locking member 52 and the second locking member 53 to move in a direction close to each other or away from each other. The ends of the first locking member 52 and the second locking member 53 that are away from each other are both provided with a clamping part, and the back cover 4 is provided with an avoidance opening corresponding to the clamping part. When the first locking member 52 and the second locking member 53 move in a direction away from each other, the clamping part of the ends of the first locking member 52 and the second locking member 53 that are away from each other can pass through the avoidance opening on the back cover 4 and be clamped with the clamping position 102 on the box body 100, thereby locking the display module and the box body 100. When the first locking member 52 and the second locking member 53 move toward each other, the engaging portion and the engaging position 102 are disengaged, thereby unlocking the display module and the box body 100 .

[0058] The maintenance hole 3 is set corresponding to the maintenance part 512. The maintenance ejector pin 6 passes through the maintenance hole 3 to apply force to the maintenance part 512, which can rotate the disassembly shaft 51, thereby driving the first locking member 52 and the second locking member 53 to move toward or away from each other, thereby achieving rapid unlocking and locking. The maintenance ejector pin 6 only needs to apply a force perpendicular to the direction of the LED light board 2 to the maintenance part 512, and does not need to apply torque. Therefore, the aperture of the maintenance hole 3 does not need to be too large, and is suitable for display modules with smaller pixel pitches. The display module can realize front maintenance of display modules with smaller pixel pitches, thereby improving the disassembly and assembly efficiency of the display screen.

[0059] In one embodiment, the transmission part includes a gear structure 511 arranged on the outer periphery of the disassembly and assembly shaft 51, a first rack structure 522 is provided at one end of the first locking member 52 close to the second locking member 53, and a second rack structure 532 is provided at one end of the second locking member 53 close to the first locking member 52, the first rack structure 522 is located on a side of the gear structure 511 close to the rear cover 4, and is meshed with the gear structure 511; the second rack structure 532 is located on a side of the gear structure 511 close to the mounting bottom shell 1, and is meshed with the gear structure 511. When the disassembly shaft 51 rotates, the gear structure 511 rotates. Since the first rack structure 522 is located at the rear side of the gear structure 511 and the second rack structure 532 is located at the front side of the gear structure 511, when the gear structure 511 rotates in the same direction, the first rack structure 522 and the second rack structure 532 move in opposite directions, thereby driving the first locking member 52 and the second locking member 53 to move away from or close to each other, thereby achieving the engagement or disengagement of the engaging portion and the engaging position 102, so as to achieve the locking or unlocking of the display module and the box body 100. When the locking device 5 is used to lock or unlock the display module, it only needs to rotate the disassembly shaft 51, which is convenient to operate and improves the disassembly efficiency of the display module.

[0060] Of course, in other embodiments, the transmission part can also be configured as two coil springs wound around the disassembly shaft 51 and extending in opposite directions, wherein the other end of one of the two coil springs is connected to the first locking member 52, and the other end of the other coil spring is connected to the second locking member 53. By rotating the disassembly shaft 51, the first locking member 52 and the second locking member 53 can also be moved in a direction approaching or away from each other. Alternatively, the first locking member 52 and the second locking member 53 can be moved in a direction approaching or away from each other through structures such as gear transmission, cam transmission, and connecting rod transmission.

[0061] In one embodiment, two gear structures 511, first rack structures 522, and second rack structures 532 are respectively provided, and the maintenance part 512 is arranged between the two gear structures 511, so as to ensure the stability of the first locking member 52 and the second locking member 53 when moving, and ensure that the clamping part can be smoothly clamped or disengaged with the clamping position 102.

[0062] In one embodiment, the locking device 5 further includes an operating handle 54, the open end of the operating handle 54 is connected to the disassembly shaft 51, and the two gear structures 511 are both located outside the open end of the operating handle 54. By rotating the operating handle 54 to drive the disassembly shaft 51 to rotate, it is more convenient for the operator to manually apply force, so that the operator can also disassemble and assemble the display module at the rear side of the display module, that is, the display module can be maintained from the front and from the back.

[0063] Furthermore, the back cover 4 is provided with an avoidance groove 43 corresponding to the operating handle 54. With such a configuration, when performing maintenance, the operator can hold the operating handle 54 and rotate the disassembly shaft 51 through the avoidance groove 43 from the rear side of the display device without removing the back cover 4, thereby further improving the disassembly efficiency.

[0064] The shape of the avoidance groove 43 is adapted to the shape of the operating handle 54, and is a U-shaped groove. A groove 44 with the same depth as the avoidance groove 43 and connected to the bottom of the avoidance groove 43 is provided on opposite sides of the bottom of the U-shaped groove, so that the operator can place his hands in the two grooves 44 to take the operating handle 54.

[0065] Specifically, the clamping portion includes a first clamping portion 521 and a second clamping portion 531, the first clamping portion 521 is provided on the first locking member 52, and the second clamping portion 531 is provided on the second locking member 53. The avoidance opening includes a first avoidance opening 41 and a second avoidance opening 42, the first avoidance opening 41 and the second avoidance opening 42 are respectively provided at opposite ends of the rear cover 4, the first clamping portion 521 extends out of the rear cover 4 through the first avoidance opening 41 to be clamped with the clamping position 102 on one side of the box body 100, and the second clamping portion 531 extends out of the rear cover 4 through the second avoidance opening 42 to be clamped with the clamping position 102 on the other side of the box body 100.

[0066] The first locking member 52 includes a first locking frame and two first base plates arranged at intervals, the first locking frame is connected to one end of the two first base plates, and the first rack structure 522 is arranged at one end of the first base plate away from the first locking frame. The first locking frame has a certain height, and the first clamping portion 521 extends outward from one end of the first locking frame away from the first rack structure 522 and is located on a side of the first locking frame away from the first base plate.

[0067] The second locking member 53 includes a second locking frame and two second bottom plates arranged at intervals, the second locking frame is connected to one end of the two second bottom plates, and the second rack structure 532 is arranged at one end of the second bottom plate away from the second locking frame. The second locking frame has a certain height, and the second clamping portion 531 extends outward from one end of the second locking frame away from the second rack, and is located on a side of the second locking frame away from the second bottom plate.

[0068] During assembly, the first locking member 52 and the second locking member 53 are arranged opposite to each other, that is, the first bottom plate is located at the rear side of the disassembly shaft 51, and the second bottom plate is located at the front side of the disassembly shaft 51, so that the two gear structures 511 on the disassembly shaft 51 located outside the operating handle 54 can cooperate with the first rack structure 522 and the second rack structure 532, and will not block the maintenance part 512 located between the two gear structures 511, and the first locking frame and the second locking frame are respectively located on both sides of the disassembly shaft 51. In order to ensure the stability of the first locking member 52 and the second locking member 53 when moving, and the two ends will not be deflected, the side of the first locking frame away from the first bottom plate abuts against the installation bottom shell 1, and the side of the second locking frame away from the second bottom plate abuts against the back cover 4.

[0069] In one embodiment, two first support blocks 13 are arranged at intervals on the mounting bottom shell 1 along the extension direction of the disassembly shaft 51, and a first support groove 131 is arranged on the side of the first support block 13 away from the mounting bottom shell 1. Two second support blocks are arranged at intervals on the rear cover 4 along the extension direction of the disassembly shaft 51, and a second support groove is arranged on the side of the second support block away from the rear cover 4. The first support groove 131 and the second support groove are connected to form a support hole, and the disassembly shaft 51 is supported in the two support holes, and the maintenance part 512 is located between the two support holes. Since the outer diameter of the maintenance part 512 is larger than the outer diameter of the disassembly shaft 51, the support hole is formed by the connection between the first support groove 131 and the second support groove, which facilitates the installation of the disassembly shaft 51. When the operating handle 54 drives the disassembly shaft 51 to rotate, the disassembly shaft 51 rotates relative to the support hole, thereby achieving support for the disassembly shaft 51, and does not affect the rotation of the disassembly shaft 51 driven by the operating handle 54.

[0070] Furthermore, if Figure 6-Figure 10 As shown, two limit rings 513 are further provided on the disassembly and assembly shaft 51, and the two limit rings 513 are respectively provided on both sides of the maintenance part 512, and the sides of the two limit rings 513 that are far away from each other are respectively abutted against the sides of the two support holes that are close to each other, so as to limit the axial movement of the disassembly and assembly shaft 51 when rotating, thereby preventing the maintenance part 512 from being misaligned with the maintenance hole 3, resulting in the maintenance ejector pin 6 being unable to apply force to the maintenance part 512 through the maintenance hole 3 to rotate the disassembly and assembly shaft 51.

[0071] In one embodiment, continue to refer to Figure 8-Figure 10The maintenance hole 3 includes an unlocking hole 31 and a locking hole 32, and the unlocking hole 31 and the locking hole 32 are arranged at intervals. The maintenance portion 512 includes an unlocking plane 5121 and a locking plane 5122, and the unlocking plane 5121 and the locking plane 5122 are arranged at preset angles along the circumferential direction of the disassembly and assembly axis 51; the unlocking hole 31 can correspond to the unlocking plane 5121; and the locking hole 32 can correspond to the locking plane 5122. The unlocking hole 31 and the locking hole 32 are arranged separately, which is more convenient for the user to disassemble and assemble. Since the rotation directions of the disassembly and assembly axis 51 are opposite when unlocking and locking, if only one maintenance hole 3 is set to achieve both unlocking and locking, the operator also needs to identify the rotation direction of the disassembly and assembly axis 51, and the disassembly and assembly axis 51 is located at the rear side of the LED light board 2. The rotation direction of the disassembly and assembly axis 51 cannot be accurately identified only through the maintenance hole 3, which causes the wrong rotation direction of the disassembly and assembly axis 51, resulting in unlocking when locking, increasing the risk of accidental falling of the display device, and low safety.

[0072] After the maintenance ejector pin 6 passes through the unlocking hole 31, it can abut against the unlocking plane 5121, and exert a force perpendicular to the direction of the LED lamp board 2 on the unlocking plane 5121, so that the disassembly axis 51 can move along the unlocking plane 5121. Fig. 9 The clockwise rotation as shown drives the first locking member 52 and the second locking member 53 to move toward each other, thereby causing the first clamping portion 521 and the second clamping portion 531 to disengage from the clamping positions 102 on both sides of the box body 100, thereby unlocking the display module and the box body 100.

[0073] After the maintenance ejector pin 6 passes through the locking hole 32, it can abut against the locking plane 5122, and also exert a force perpendicular to the direction of the LED lamp board 2 on the locking plane 5122, so that the disassembly axis 51 can move along the direction of the LED lamp board 2. Fig.10 The counterclockwise rotation as shown drives the first locking member 52 and the second locking member 53 to move away from each other, so that the first clamping portion 521 extends out of the first avoidance opening 41 and is clamped with the clamping position 102 on one side of the box body 100, and the second clamping portion 531 extends out of the second avoidance opening 42 and is clamped with the clamping position 102 on the other side of the box body 100, thereby achieving the locking of the display module and the box body 100.

[0074] In one embodiment, continue to refer to Figure 6 , Figure 8-Figure 10The maintenance part 512 also includes a connecting arc surface 5123 for connecting the unlocking plane 5121 and the locking plane 5122, and a first limiting groove 5124 is provided at one end of the connecting arc surface 5123 close to the unlocking plane 5121, and a second limiting groove 5125 is provided at one end of the connecting arc surface 5123 close to the locking plane 5122; a limiting protrusion 12 is provided on one side of the installation bottom shell 1 close to the disassembly axis 51, and the limiting protrusion 12 is located between the unlocking hole 31 and the locking hole 32. When the limiting protrusion 12 slides into the first limiting groove 5124, the unlocking hole 31 corresponds to the unlocking plane 5121; when the limiting protrusion 12 slides into the second limiting groove 5125, the locking hole 32 corresponds to the locking plane 5122. By providing the first limiting groove 5124 and the second limiting groove 5125, the clockwise rotation angle of the disassembly and assembly shaft 51 is limited when unlocking, and the counterclockwise rotation angle of the disassembly and assembly shaft 51 is limited when locking, so that the disassembly and assembly shaft 51 cannot continue to rotate after rotating to the point where the first clamping portion 521 and the second clamping portion 531 are engaged or disengaged with the clamping position 102, thereby preventing the first clamping portion 521 and the second clamping portion 531 from moving too far and being damaged by the blocking force; or preventing the first rack structure 522 and the second rack structure 532 from being disengaged from the gear structure 511, resulting in transmission failure.

[0075] Exemplarily, the preset angle between the unlocking plane 5121 and the locking plane 5122 along the circumferential direction of the disassembly axis 51 is 90°. When unlocking, the disassembly axis 51 is rotated 90° in the clockwise direction to unlock the display module and the box body 100; when locking, the disassembly axis 51 is rotated 90° in the counterclockwise direction to lock the display module and the box body 100.

[0076] In one embodiment, the maintenance hole 3 includes a first hole 301 and a second hole 302 which are concentrically arranged and connected. The first hole 301 is arranged on the LED lamp board 2, and the second hole 302 is arranged on the mounting bottom shell 1. The inner diameter of the first hole 301 is equal to the outer diameter of the maintenance ejector pin 6, and the inner diameter of the second hole 302 is greater than the inner diameter of the first hole 301. Such an arrangement can set the aperture of the first hole 301 to be smaller, and at the same time, when the maintenance hole 3 and the maintenance portion 512 are slightly misaligned due to processing or installation errors, the maintenance ejector pin 6 can have a certain moving space in the second hole 302, so that the head of the maintenance ejector pin 6 can also exert force on the maintenance portion 512 to drive the disassembly shaft 51 to rotate when it is slightly offset.

[0077] Furthermore, a boss 11 is provided on one side of the mounting bottom shell 1 close to the LED lamp board 2, and the second hole 302 is provided on the boss 11. By providing the second hole 302 on the boss 11, the depth of the second hole 302 can be increased, and the maintenance ejector pin 6 can be protected to prevent the maintenance ejector pin 6 from breaking when force is applied to the maintenance portion 512.

[0078] The display screen provided in this embodiment uses the above-mentioned display device, and the locking portion of the locking device 5 in the display module is locked with the locking position 102 on the box 100, which can fix the display module on the box 100 to prevent the display module from accidentally falling. The display module can not only achieve rear maintenance, but also achieve front maintenance through the maintenance hole 3, and is suitable for front maintenance of display modules with smaller pixel pitches, thereby improving the disassembly and maintenance efficiency of the display device.

[0079] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A display module, characterized in that: include: A mounting base shell (1) and an LED light board (2), wherein the LED light board (2) is mounted on the front side of the mounting base shell (1), and a maintenance hole (3) is provided through the LED light board (2) and the mounting base shell (1); A rear cover (4) connected to the rear side of the mounting base shell (1); A locking device (5) is arranged between the mounting bottom shell (1) and the rear cover (4), the locking device (5) comprising a disassembly shaft (51), a first locking member (52) and a second locking member (53), the disassembly shaft (51) is provided with a transmission part and a maintenance part (512), the ends of the first locking member (52) and the second locking member (53) close to each other are both matched with the transmission part, the disassembly shaft (51) rotates, and the transmission part drives the first locking member (52) and the second locking member (53) to move in a direction close to each other or away from each other; the ends of the first locking member (52) and the second locking member (53) far away from each other are both provided with a clamping part, and the rear cover (4) is provided with an avoidance opening corresponding to the clamping part; The maintenance hole (3) is arranged corresponding to the maintenance part (512), and the maintenance ejector pin (6) passes through the maintenance hole (3) to apply force to the maintenance part (512), thereby enabling the disassembly shaft (51) to rotate.

2. The display module according to claim 1, characterized in that: The maintenance hole (3) comprises an unlocking hole (31) and a locking hole (32), the unlocking hole (31) and the locking hole (32) are arranged at intervals, the maintenance portion (512) comprises an unlocking plane (5121) and a locking plane (5122), the unlocking plane (5121) and the locking plane (5122) are arranged at intervals of a preset angle along the circumferential direction of the disassembly and assembly axis (51); the unlocking hole (31) can correspond to the unlocking plane (5121); the locking hole (32) can correspond to the locking plane (5122).

3. The display module according to claim 2, characterized in that: The maintenance portion (512) further comprises a connecting arc surface (5123) for connecting the unlocking plane (5121) and the locking plane (5122), wherein one end of the connecting arc surface (5123) close to the unlocking plane (5121) is provided with a first limiting groove (5124), and one end of the connecting arc surface (5123) close to the locking plane (5122) is provided with a second limiting groove (5125); A limiting protrusion (12) is provided on one side of the mounting bottom shell (1) close to the disassembly axis (51), and the limiting protrusion (12) is located between the unlocking hole (31) and the locking hole (32). When the limiting protrusion (12) slides into the first limiting groove (5124), the unlocking hole (31) corresponds to the unlocking plane (5121); when the limiting protrusion (12) slides into the second limiting groove (5125), the locking hole (32) corresponds to the locking plane (5122).

4. The display module according to claim 1, characterized in that: Two first support blocks (13) are arranged at intervals on the installation base shell (1) along the extension direction of the disassembly axis (51), and a first support groove (131) is arranged on a side of the first support block (13) away from the installation base shell (1); Two second support blocks are arranged on the rear cover (4) at intervals along the extension direction of the disassembly and assembly axis (51); a second support groove is arranged on a side of the second support block away from the rear cover (4); the first support groove (131) and the second support groove are connected to form a support hole; the disassembly and assembly axis (51) is supported in the two support holes; and the maintenance portion (512) is located between the two support holes.

5. The display module according to claim 4, characterized in that: Two limiting rings (513) are also provided on the disassembly and assembly shaft (51), and the two limiting rings (513) are respectively provided on both sides of the maintenance portion (512), and the sides of the two limiting rings (513) that are away from each other are respectively in contact with the sides of the two supporting holes that are close to each other.

6. The display module according to any one of claims 1 to 5, characterized in that: The transmission part comprises a gear structure (511) arranged on the outer periphery of the disassembly and assembly shaft (51); a first rack structure (522) is arranged at one end of the first locking member (52) close to the second locking member (53); a second rack structure (532) is arranged at one end of the second locking member (53) close to the first locking member (52); the first rack structure (522) is located on a side of the gear structure (511) close to the rear cover (4) and meshes with the gear structure (511); the second rack structure (532) is located on a side of the gear structure (511) close to the mounting bottom shell (1) and meshes with the gear structure (511).

7. The display module according to claim 6, characterized in that: The gear structure (511), the first rack structure (522), and the second rack structure (532) are each provided with two in a one-to-one correspondence, and the maintenance portion (512) is provided between the two gear structures (511).

8. The display module according to claim 7, characterized in that: The locking device (5) further comprises an operating handle (54), the open end of the operating handle (54) being connected to the disassembly shaft (51), and the two gear structures (511) are both located outside the open end of the operating handle (54); The rear cover (4) is provided with an avoidance groove (43) corresponding to the operating handle (54).

9. The display module according to any one of claims 1 to 5, characterized in that: The maintenance hole (3) comprises a first hole (301) and a second hole (302) which are concentrically arranged and connected, the first hole (301) being arranged on the LED lamp board (2), the second hole (302) being arranged on the mounting bottom shell (1), the inner diameter of the first hole (301) being equal to the outer diameter of the maintenance ejector pin (6), and the inner diameter of the second hole (302) being greater than the inner diameter of the first hole (301); A convex column (11) abutting against the LED light board (2) is provided on one side of the mounting base shell (1) close to the LED light board (2), and the second hole (302) is provided on the convex column (11).

10. A display screen, characterized in that It comprises a box body (100) and a display module according to any one of claims 1 to 9, wherein the box body (100) is provided with a snap-fit ​​position (102) for snapping with the snap-fit ​​portion.

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