Display module and display screen

Abstract

The utility model relates to the technical field of outdoor display screens, and discloses a display module and a display screen, the display module comprises an installation bottom shell, an LED lamp panel, a rear cover and a locking device, the LED lamp panel is installed on the front side of the installation bottom shell, and a maintenance hole is arranged to penetrate through the LED lamp panel and the installation 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 utility model 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 display module safety lock to prevent the display module from accidentally falling.

[0003] Display modules require frequent disassembly and maintenance, especially in the rental industry. To remove a display module, users must not only overcome the magnetic attraction but also unlock the module's safety lock. Because the lock is located on the rear side of the display module, unlocking it from the rear is generally easier. However, rear maintenance requires disassembly of the cabinet frame, reducing assembly and disassembly efficiency. Front maintenance is more convenient and is often used for disassembly and maintenance.

[0004] Existing display modules that allow front maintenance use a hexagonal wrench inserted through a front maintenance hole in the display module to turn a safety lock. However, turning the safety lock requires a certain amount of torque, requiring a hexagonal wrench with a large outer diameter, and correspondingly, a larger aperture in the front maintenance hole. Therefore, this front maintenance method is only suitable for display modules with a larger pixel pitch. For display modules with a smaller pixel pitch, a larger front maintenance hole would affect the display quality, making front maintenance impossible. Utility Model Content

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

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

[0007] The display module includes:

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

[0009] a rear cover connected to the rear side of the mounting base;

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

[0011] The maintenance hole is provided corresponding to the maintenance portion, and a maintenance ejector pin passes through the maintenance hole and applies force to the maintenance portion, thereby enabling the disassembly shaft to rotate.

[0012] As an optional solution for the display module, the maintenance hole includes an unlocking hole and a locking hole, and the unlocking hole and the locking hole are arranged at intervals. The maintenance part includes an unlocking plane and a locking plane, and 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 portion further includes a connecting arc surface for connecting the unlocking plane and the locking plane, wherein the end of the connecting arc surface close to the unlocking plane is provided with a first limiting groove, and the end of the connecting arc surface close to the locking plane is provided with a second limiting groove;

[0014] A limiting protrusion is provided on one side of the mounting bottom shell close to the disassembly 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 for the display module, two first support blocks are provided on the mounting base along the extension direction of the mounting and disassembling axis, and a first support groove is provided on a side of the first support block away from the mounting base.

[0016] Two second support blocks are arranged on the back cover at intervals along the extension direction of the disassembly and assembly axis, and a second support groove is provided on the side of the second support block away from the back cover. The first support groove and the second support groove are connected to form a support hole, and 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 shaft, 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 in contact with the sides of the two support holes that are close to each other.

[0018] As an optional solution for 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 base and is meshed with the gear structure.

[0019] As an optional solution of the display module, two of the gear structure, the first rack structure, and the second rack structure are each provided in one-to-one correspondence, and the maintenance portion is provided 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 both located outside the open end of the operating handle;

[0021] An avoidance groove is provided on the rear cover corresponding to the operating handle.

[0022] As an optional solution for 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, and the second hole is provided on the mounting base, 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 larger than the inner diameter of the first hole;

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

[0024] A display screen comprises a housing and a display module as described in any of the above solutions, wherein the housing is provided with a snap-fit ​​position for snapping with the snap-fit ​​portion.

[0025] Beneficial effects of the utility model:

[0026] The display module provided by the present invention is provided with a maintenance hole extending through the LED light panel and the mounting base, and a locking device is disposed between the mounting base and the rear cover. A transmission portion on the disassembly shaft cooperates with the ends of the first and second locking members that are closer to each other. When the disassembly shaft rotates, the transmission portion can drive the first and second locking members to move toward or away from each other. When the first and second locking members move away from each other, the engaging portions at the ends of the first and second locking members that are farther away from each other can pass through a clearance opening in the rear cover and engage with the engaging portion on the housing, thereby locking the display module to the housing. When the first and second locking members move toward each other, the engaging portion disengages from the engaging portion, thereby unlocking the display module from the housing. The maintenance hole is provided corresponding to the maintenance portion, and a maintenance pin passes through the maintenance hole and applies force to the maintenance portion, causing the disassembly shaft to rotate, thereby driving the first and second locking members to move toward or away from each other, achieving rapid unlocking and locking. The maintenance pin only needs to apply force perpendicular to the LED panel to the maintenance portion, without applying torque. Therefore, the maintenance hole diameter does not need to be large, making it suitable for display modules with smaller pixel pitches. This display module enables front maintenance of display modules with smaller pixel pitches, improving the efficiency of display device disassembly and maintenance.

[0027] The display screen provided by the utility model comprises a housing and the aforementioned display module. The locking portion of the locking device in the display module engages with the locking portion on the housing, securing the display module to the housing and preventing it from accidentally falling. The display module can be maintained from the front via a maintenance hole, and is suitable for front maintenance of display modules with smaller pixel pitches, thereby improving the efficiency of disassembly, assembly, and maintenance of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an exploded schematic diagram of the box and display module provided by an embodiment of the present utility model;

[0029] Figure 2 This is a front view of a box provided by an embodiment of the present utility model;

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

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

[0032] Figure 5 This is a schematic structural diagram of a display module provided by an embodiment of the present utility model;

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

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

[0035] Figure 8 This is a schematic structural diagram of the operating handle and disassembly shaft provided by an embodiment of the utility model;

[0036] Figure 9 This is a cross-sectional view of unlocking the display module by a maintenance ejector provided by an embodiment of the present utility model;

[0037] Figure 10 This is a cross-sectional view of a display module locked by a maintenance ejector provided in an embodiment of the present invention.

[0038] In the picture:

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

[0040] 1. Install the bottom shell; 11. Boss; 12. Limiting 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. Back 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 unit; 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 portion; 522. First rack structure; 53. Second locking member; 531. Second clamping portion; 532. Second rack structure; 54. Operating handle;

[0045] 6. Maintain the ejector pin;

[0046] 7. Screws. DETAILED DESCRIPTION

[0047] The following describes in detail embodiments of the present invention. Examples of the embodiments 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 explain the present invention, and should not be construed as limiting the present invention.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0049] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0050] Unless otherwise expressly specified or 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. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0051] The technical solution of the present invention will be 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 provided therein. A display module is installed on each display module installation position, which is suitable for large outdoor display screens.

[0053] A plurality of magnets 101 are circumferentially spaced apart on the front of the display module mounting position. Accordingly, a plurality of iron sheets 14 magnetically connected to the magnets 101 are circumferentially arranged on the display module to magnetically connect the display module to the display module mounting position.

[0054] In order to prevent the display module from accidentally falling due to the loss of 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 avoid the display module from accidentally falling.

[0055] Since the display modules of large outdoor display screens need to be frequently disassembled and maintained, especially rental display screens, it is necessary to disengage the display module from the box 100 during disassembly and maintenance, 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 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, this embodiment provides a display module, which is applied to the above-mentioned display screen. The display module includes a mounting base 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 1, and a maintenance hole 3 is provided through the LED light board 2 and the mounting base 1. The back cover 4 is connected to the back side of the mounting base 1, and the area of ​​the back cover 4 is smaller than the area of ​​the mounting base 1. It is fixed to the center position of the mounting base 1 by screws 7. An iron sheet 14 for magnetically connecting to the magnet 101 of the box body 100 is provided in the circumference of the mounting base 1. The locking device 5 is provided between the mounting base 1 and the back cover 4. The locking device 5 cooperates with the snap-in position 102 on the box body 100 to achieve a mechanical connection between the display module and 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 portion and a maintenance portion 512. The ends of the first locking member 52 and the second locking member 53 that are close to each other are both engaged with the transmission portion. When the disassembly shaft 51 rotates, the transmission portion drives the first locking member 52 and the second locking member 53 to move toward 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 portion, and the back cover 4 is provided with a corresponding avoidance opening for the clamping portion. When the first locking member 52 and the second locking member 53 move in a direction away from each other, the clamping portion of the end of the first locking member 52 and the second locking member 53 that is away from each other can pass through the avoidance opening on the back cover 4 and engage with the clamping position 102 on the housing 100, thereby locking the display module to the housing 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 housing 100 .

[0058] The maintenance hole 3 is provided corresponding to the maintenance portion 512. The maintenance ejector pin 6 passes through the maintenance hole 3 and applies force to the maintenance portion 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 portion 512, without applying 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. This display module can achieve front maintenance of display modules with smaller pixel pitches, thereby improving the efficiency of disassembly and assembly of the display screen.

[0059] In one embodiment, the transmission portion 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 toward each other, thereby achieving the engagement or disengagement of the engaging portion with the engaging position 102, thereby locking or unlocking the display module and the housing 100. When locking or unlocking the display module, the locking device 5 only needs to rotate the disassembly shaft 51, which is convenient to operate and improves the efficiency of disassembling the display module.

[0060] Of course, in other embodiments, the transmission portion can also be configured as two coil springs wound around the assembly / disassembly shaft 51 and extending in opposite directions, with the other end of one coil spring connected to the first locking member 52 and the other end of the other coil spring connected to the second locking member 53. Rotating the assembly / disassembly shaft 51 can also achieve movement of the first locking member 52 and the second locking member 53 toward or away from each other. Alternatively, movement of the first locking member 52 and the second locking member 53 toward or away from each other can be achieved through a gear transmission, a cam transmission, a connecting rod transmission, or other structures.

[0061] In one embodiment, two gear structures 511, first rack structures 522, and second rack structures 532 are each provided in a one-to-one correspondence, and the maintenance portion 512 is provided between the two gear structures 511, so as to ensure the stability of the first locking member 52 and the second locking member 53 during movement, and ensure that the clamping portion can be smoothly engaged 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 which is connected to the assembly / disassembly shaft 51. Two gear structures 511 are located outside the open end of the operating handle 54. Rotating the operating handle 54 drives the assembly / disassembly shaft 51, making it easier for the operator to manually apply force, allowing the operator to disassemble and assemble the display module from the rear side. This allows for both front- and rear-side maintenance of the display module.

[0063] Furthermore, a clearance groove 43 is provided on the rear cover 4 corresponding to the operating handle 54. This arrangement allows the operator to maintain the display device from the rear side without removing the rear cover 4. The operator can simply hold the operating handle 54 through the clearance groove 43 and rotate the disassembly shaft 51, further improving the efficiency of disassembly and assembly.

[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 pick up the operating handle 54.

[0065] Specifically, the engaging portion includes a first engaging portion 521 and a second engaging portion 531. The first engaging portion 521 is provided on the first locking member 52, and the second engaging portion 531 is provided on the second locking member 53. The escape opening includes a first escape opening 41 and a second escape opening 42. The first escape opening 41 and the second escape opening 42 are respectively provided at opposite ends of the rear cover 4. The first engaging portion 521 extends through the first escape opening 41 to engage with the engaging portion 102 on one side of the case 100, and the second engaging portion 531 extends through the second escape opening 42 to engage with the engaging portion 102 on the other side of the case 100.

[0066] The first locking member 52 comprises a first locking frame and two spaced-apart first base plates. The first locking frame is connected to one end of the two first base plates, and a first rack structure 522 is located on the end of the first base plates away from the first locking frame. The first locking frame has a certain height, and the first engaging portion 521 extends outward from the end of the first locking frame away from the first rack structure 522 and is located on the side of the first locking frame away from the first base plates.

[0067] The second locking member 53 comprises a second locking frame and two spaced-apart second base plates. The second locking frame is connected to one end of the two second base plates, and a second rack structure 532 is located on the end of the second base plate away from the second locking frame. The second locking frame has a certain height, and the second engaging portion 531 extends outward from the end of the second locking frame away from the second rack and is located on the side of the second locking frame away from the second base plates.

[0068] During assembly, the first locking member 52 and the second locking member 53 are positioned relative to each other, with the first base plate positioned behind the assembly / disassembly shaft 51 and the second base plate positioned in front of the assembly / disassembly shaft 51. This allows the two gear structures 511 on the outside of the operating handle 54 on the assembly / disassembly shaft 51 to engage with the first rack structure 522 and the second rack structure 532 without obstructing the maintenance portion 512 located between the two gear structures 511. The first locking frame and the second locking frame are positioned on either side of the assembly / disassembly shaft 51. To ensure stability during movement of the first locking member 52 and the second locking member 53 and to prevent their ends from deflecting, the side of the first locking frame away from the first base plate abuts against the mounting base 1, while the side of the second locking frame away from the second base plate abuts against the rear cover 4.

[0069] In one embodiment, two first support blocks 13 are spaced apart on the mounting base 1 along the extension direction of the assembly / disassembly shaft 51. A first support groove 131 is provided on the side of the first support block 13 facing away from the mounting base 1. Two second support blocks are spaced apart on the rear cover 4 along the extension direction of the assembly / disassembly shaft 51. A second support groove is provided on the side of the second support block facing away from the rear cover 4. The first support groove 131 and the second support groove mate to form a support hole. The assembly / disassembly shaft 51 is supported within the two support holes, and the maintenance portion 512 is located between the two support holes. Because the outer diameter of the maintenance portion 512 is larger than the outer diameter of the assembly / disassembly shaft 51, the support hole formed by the mate between the first support groove 131 and the second support groove facilitates the installation of the assembly / disassembly shaft 51. When the operating handle 54 drives the assembly / disassembly shaft 51 to rotate, the assembly / disassembly shaft 51 rotates relative to the support hole, thereby providing support for the assembly / disassembly shaft 51 without affecting the rotation of the assembly / disassembly shaft 51 driven by the operating handle 54.

[0070] Furthermore, if Figures 6-10 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 away from each other are respectively in contact with 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 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 Figures 8-10The maintenance hole 3 includes an unlocking hole 31 and a locking hole 32, which are spaced apart. The maintenance portion 512 includes an unlocking plane 5121 and a locking plane 5122, which are spaced apart at a preset angle along the circumference of the disassembly shaft 51. The unlocking hole 31 can correspond to the unlocking plane 5121, and the locking hole 32 can correspond to the locking plane 5122. Separating the unlocking hole 31 and the locking hole 32 makes disassembly and assembly operations more convenient for the user. Because the disassembly shaft 51 rotates in opposite directions during unlocking and locking, if only one maintenance hole 3 is provided to achieve both unlocking and locking, the operator will need to identify the rotation direction of the disassembly shaft 51. However, the disassembly shaft 51 is located on the rear side of the LED light board 2. The rotation direction of the disassembly shaft 51 cannot be accurately identified using the maintenance hole 3 alone, resulting in the disassembly shaft 51 rotating in the wrong direction, causing it to unlock while locked, increasing the risk of the display device accidentally falling, and reducing 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. Figure 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. Similarly, a force perpendicular to the direction of the LED lamp board 2 is applied to the locking plane 5122. The disassembly axis 51 can be moved along the direction of the LED lamp board 2. Figure 10 The counterclockwise rotation 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 engages 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 engages with the clamping position 102 on the other side of the box body 100, thereby achieving locking of the display module and the box body 100.

[0074] In one embodiment, continue to refer to Figure 6 、 Figures 8-10The maintenance part 512 also includes a connecting arc surface 5123 for connecting the unlocking plane 5121 and the locking plane 5122. 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 the 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 angle of rotation of the disassembly and assembly shaft 51 in the clockwise direction when unlocking is limited, and the angle of rotation of the disassembly and assembly shaft 51 in the counterclockwise direction when locking is limited, 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 disengaging from the gear structure 511, resulting in transmission failure.

[0075] For example, the preset angle between the unlocking plane 5121 and the locking plane 5122 along the circumferential direction of the disassembly shaft 51 is 90°. When unlocking, the disassembly shaft 51 is rotated 90° in the clockwise direction to unlock the display module and the box body 100; when locking, the disassembly shaft 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 that are concentrically arranged and connected. The first hole 301 is provided on the LED light board 2, and the second hole 302 is provided on the mounting base 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 larger than the inner diameter of the first hole 301. This arrangement can set the diameter of the first hole 301 to be smaller, while also preventing slight misalignment between the maintenance hole 3 and the maintenance portion 512 due to machining or installation errors. The maintenance ejector pin 6 has a certain amount of movement space within the second hole 302, so that even if the head of the maintenance ejector pin 6 is slightly offset, it can still apply force to the maintenance portion 512 to drive the disassembly shaft 51 to rotate.

[0077] Furthermore, a boss 11 is provided on one side of the mounting base 1 near the LED light board 2, and is abutted against the LED light board 2. 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, thereby protecting the maintenance ejector pin 6 and preventing it from breaking when force is applied to the maintenance portion 512.

[0078] The display screen provided in this embodiment utilizes the aforementioned display device. The locking portion of the locking device 5 in the display module engages with the locking portion 102 on the housing 100, securing the display module to the housing 100 and preventing it from accidentally falling. This display module allows for both rear-view maintenance and front-view maintenance through the maintenance hole 3. This is particularly suitable for front-view maintenance of display modules with smaller pixel pitches, improving the efficiency of assembly and disassembly maintenance 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 may be changes in the specific implementation methods and application scope. 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) are mounted, 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 (1); The locking device (5) is arranged between the mounting bottom shell (1) and the rear cover (4), and 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 of approaching or moving away from each other. The ends of the first locking member (52) and the second locking member (53) that are 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 provided corresponding to the maintenance portion (512), and the maintenance ejector pin (6) passes through the maintenance hole (3) to apply force to the maintenance portion (512), thereby enabling the disassembly shaft (51) to rotate.

2. The display module according to claim 1, wherein: The 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 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); and the locking hole (32) can correspond to the locking plane (5122).

3. The display module according to claim 2, wherein: The maintenance portion (512) further comprises a connecting arc surface (5123) for connecting the unlocking plane (5121) and the locking plane (5122); 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 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, wherein: Two first support blocks (13) are provided on the mounting base shell (1) at intervals along the extending direction of the disassembly axis (51), and a first support groove (131) is provided on a side of the first support block (13) away from the mounting base shell (1); Two second support blocks are spaced apart on the rear cover (4) along the extension direction of the disassembly and assembly shaft (51); a second support groove is provided 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 shaft (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, wherein: 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 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); 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 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 base (1) and meshes with the gear structure (511).

7. The display module according to claim 6, wherein: The gear structure (511), the first rack structure (522), and the second rack structure (532) are each provided in 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, wherein: 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); An avoidance groove (43) is provided on the rear cover (4) corresponding to the operating handle (54).

9. The display module according to any one of claims 1 to 5, wherein: The maintenance hole (3) comprises a first hole (301) and a second hole (302) which are concentrically arranged and communicated with each other, the first hole (301) being provided on the LED lamp board (2), the second hole (302) being provided 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 The invention 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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