COB display screen installation structure

Abstract

The invention relates to the technical field of display equipment installation, in particular to a COB display screen installation structure which comprises a support, the support is used for being installed on a bearing structure, a COB display screen is installed on the support and composed of a display screen body and a box body, an installation plate is welded to the back face of the box body of the COB display screen, moving parts are symmetrically arranged on the support, and the COB display screen is installed on the support. The moving part is rotationally connected with symmetrically-arranged rotating shafts, the support is provided with a clamping block, and the clamping block is matched with the square groove in a clamped mode. Through the integrated transmission structure that the first bidirectional threaded rod is in linkage with the moving part, the rack, the gear and the wedge block, rapid installation and reliable locking of the COB display screen are achieved, the overall structure is subjected to double positioning of limiting and pressing, it is ensured that the COB display screen is stable and reliable after being installed, the relative displacement risk in the using process is effectively reduced, and the service life of the COB display screen is prolonged. The installation requirements in various scenes are met, and the operation convenience and the structural stability are both achieved.

Description

Technical Field

[0001] This invention relates to the field of display device installation technology, and in particular to a COB display screen installation structure. Background Technology

[0002] COB displays, as a highly integrated display device with excellent display effects, have been widely used in various scenarios such as indoor and outdoor advertising displays, stage performances, monitoring centers, and commercial complexes. As the application scope of COB displays continues to expand, the ease of installation and disassembly, stability, and efficiency have become key factors affecting user experience and construction costs.

[0003] In existing technologies, the installation of COB displays typically relies on traditional bolt and nut fixing methods. Specifically, the COB display's cabinet structure needs to be aligned with the mounting bracket, wall, or other load-bearing structure through pre-set mounting holes. The operator then needs to manually screw in the bolts and nuts to lock them in place, one by one, after aligning each mounting hole. While this installation method can ensure the stability of the connection to a certain extent, it has many significant drawbacks:

[0004] First, the installation process is cumbersome and inefficient. Since COB display cabinets typically require multiple bolts for multi-point fixation, operators must complete the alignment, screwing in, and tightening of each bolt one by one. Especially in large-area splicing installation scenarios, this process needs to be repeated dozens or even hundreds of times, which not only consumes a lot of manpower and time, but also easily leads to delays in the installation progress due to operator fatigue.

[0005] Secondly, disassembly and maintenance are inconvenient. When the COB display needs to be inspected, replaced, or moved, all bolts and nuts must be removed one by one in reverse order, which is also cumbersome and time-consuming. Especially in emergency maintenance scenarios, it will seriously affect the normal use of the display.

[0006] To address the problems of cumbersome installation, low efficiency, and inconvenient maintenance of existing COB display screens, there is an urgent need for an installation structure that can achieve one-click locking, thereby simplifying the installation process and improving the efficiency of installation and disassembly of COB display screens. Summary of the Invention

[0007] The technical solution is: a COB display screen mounting structure, including a bracket for mounting on a load-bearing structure, the COB display screen being mounted on the bracket, the COB display screen consisting of a display screen and a cabinet, a mounting plate welded to the back of the COB display screen cabinet, symmetrically arranged movable parts on the bracket, symmetrically arranged rotating shafts rotatably connected to the movable parts, and locking blocks on the bracket that engage with square slots.

[0008] Furthermore, it also includes a movable frame, on which the support is slidably connected symmetrically arranged movable frames, and a first rack is fixedly connected to the movable frame near the rotating shaft. The first rack meshes with a first gear, and the first gear is fixedly connected to the rotating shaft. A first bidirectional threaded rod is rotatably connected to the center of the back of the support, and the first bidirectional threaded rod is threadedly connected to the movable frame.

[0009] Furthermore, it also includes a first spring, which is symmetrically arranged and connected between the moving part and the bracket. A first wedge block is fixedly connected to the moving part, and a second wedge block is fixedly connected to the moving bracket. The second wedge block and the first wedge block are in a pressing fit.

[0010] Furthermore, it also includes a worm gear, which is located in the middle of the first bidirectional threaded rod. The worm gear meshes with a worm, and the worm and the bracket are rotatably connected. A knob is fixedly connected to the end of the worm.

[0011] Furthermore, it also includes U-shaped blocks, which are symmetrically arranged and slidably connected to the bracket. An ejector is fixedly connected between the front parts of the U-shaped blocks. Protrusions are provided on the left side of the top and bottom of the ejector. A sliding groove is opened on the back of the mounting plate, and the sliding groove and the ejector slide together. Symmetrically arranged screws are rotatably connected to the bracket. The screws are threadedly connected to the U-shaped blocks. A second gear is fixedly connected to the end of the screw near the ejector. A second rack is fixedly connected to the left side of the upper movable frame, and a second rack is also connected to the right side of the lower movable frame. The second rack meshes with the adjacent second gear.

[0012] Furthermore, it also includes sliding plates, which are symmetrically arranged and slidably connected to the ejector. Multiple equally spaced rollers are rotatably connected to the side of the sliding plates that are away from each other. A pair of symmetrically arranged second bidirectional threaded rods are rotatably connected to the ejector. The second bidirectional threaded rods are threadedly connected to the sliding plates. A third gear is fixedly connected to the second bidirectional threaded rod. The third gear meshes with a third rack. A second spring is connected between the third rack and the ejector. A stop plate is fixedly connected to the side of the third rack that is away from the third gear. The stop plate and the bracket are in a pressing fit.

[0013] Furthermore, it also includes a third wedge block, which is slidably connected to the ejector on the side away from the protrusion. A third spring is connected between the third wedge block and the ejector. An inclined surface is opened on the left side of the mounting plate, and the inclined surface of the mounting plate and the third wedge block are pressed together.

[0014] Furthermore, it also includes a fourth rack, which is fixedly connected to the third wedge block. The fourth rack meshes with a fourth gear, which is fixedly connected to a rotating rod. The rotating rod and the ejector are rotatably connected. A one-way gear is fixedly connected to the rear of the rotating rod. The one-way gear meshes with a fifth rack, which is fixedly connected to a sliding plate. A telescopic rod is fixedly connected to the right side of the protrusion. A push-out plate is fixedly connected to the right end of the telescopic rod. A fourth spring is connected between the push-out plate and the protrusion and is wound around the telescopic rod.

[0015] The beneficial effects are as follows: 1. This invention achieves rapid installation and reliable locking of the COB display screen through an integrated transmission structure of the first bidirectional threaded rod linkage moving part, rack, gear and wedge block. The operator only needs to align the square slot of the display screen mounting plate with the locking block and insert it. Rotating the first bidirectional threaded rod will drive the locking block to rotate 90° to complete the mounting plate limit. Subsequently, the wedge block squeeze transmission drives the locking block to move backward and press the mounting plate. This not only completely eliminates the assembly gap between the locking block and the square slot in the traditional limit structure, avoiding the risk of loosening caused by the display screen hanging due to its own weight, but also saves the cumbersome bolt tightening operation, greatly simplifying the installation process and improving installation efficiency. At the same time, the overall structure ensures that the COB display screen is stable and reliable after installation through "limiting + pressing" dual positioning, effectively reducing the risk of relative displacement during use, adapting to the installation needs of various scenarios, and combining convenient operation and structural stability.

[0016] 2. This invention perfectly solves the problem of single-panel maintenance and disassembly of large-area spliced ​​COB displays by adding a linkage ejection mechanism consisting of a U-shaped block, ejector, screw, second gear, and second rack. This design eliminates the need for operators to support the screen from the front to prevent it from falling or to push it from the back, completely avoiding the inconvenience of disassembly caused by the lack of a grip structure on the small screen surface. It not only enables the quick and safe removal of a single small screen but also does not affect the installation stability of surrounding normal small screens, greatly reducing the difficulty of maintenance operations and labor costs. At the same time, the ejector can initially support the mounting plate. Combined with the full-process adaptable design of "installation limit + locking + disassembly ejection", it ensures the flatness and structural stability of the spliced ​​installation and takes into account the convenience of later maintenance, further improving the practicality and adaptability of the overall installation structure. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention.

[0019] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle.

[0020] Figure 4 This is a three-dimensional structural diagram of the first gear, first rack, and movable frame components of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the second gear, roller, and sliding plate components of the present invention.

[0022] Figure 6 For the present invention Figure 5 Enlarged view of section B in the middle.

[0023] Figure 7 For the present invention Figure 5 Enlarged view of point C in the middle.

[0024] Figure 8 This is a three-dimensional structural diagram of the COB display screen and mounting plate of the present invention.

[0025] Component names and numbers in the diagram: 1_Bracket, 2_COB Display Screen, 3_Mounting Plate, 4_Square Channel, 5_Card Block, 6_Moving Part, 7_Rotating Shaft, 8_First Gear, 9_First Rack, 10_Moving Frame, 11_First Double-Sided Threaded Rod, 12_First Spring, 13_First Wedge Block, 14_Second Wedge Block, 15_Worm Gear, 16_Worm, 17_Knob, 18_U-Shaped Block, 19_Ejector Part, 20_Protrusion, 21_Screw, 22 23. Second rack, 24. Roller, 25. Sliding plate, 26. Second double-direction threaded rod, 27. Third gear, 28. Third rack, 29. Second spring, 30. Support plate, 31. Third wedge block, 32. Third spring, 311. Inclined surface, 331. Rotating rod, 33. One-way gear, 34. Fourth rack, 341. Fourth gear, 35. Fifth rack, 36. Push-out plate, 37. Telescopic rod, 38. Fourth spring. Detailed Implementation

[0026] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0027] A COB display mounting structure, such as Figure 1 As shown, the system includes a bracket 1 for mounting on a supporting structure. A COB display screen 2 is mounted on the bracket 1. The COB display screen 2 consists of a display screen and a housing. The bracket 1 is only a partial structure of the overall bracket. Multiple COB display screens 2 can be mounted on the overall bracket, and a large display screen is assembled from multiple COB display screens 2. Currently, the COB display screen 2 is mounted on the bracket 1 using bolts and nuts. Since the COB display screen 2 housing typically requires multiple bolts for multi-point fixing, operators must align, screw in, and tighten the bolts one by one, resulting in cumbersome and inefficient installation operations. Furthermore, disassembly and maintenance are inconvenient, severely affecting the normal use of the display screen. Therefore, this embodiment adopts the following solution:

[0028] like Figure 2 and Figure 3 As shown, a mounting plate 3 is welded to the back of the COB display screen 2. A square groove 4 is opened on the side of the mounting plate 3 away from the COB display screen 2. The bracket 1 is equipped with symmetrically arranged movable parts 6. The movable parts 6 are rotatably connected to symmetrically arranged rotating shafts 7. The bracket 1 is equipped with a locking block 5. The locking block 5 and the square groove 4 are engaged. The operator can bring the mounting plate 3 on the back of the COB display screen 2 close to the locking block 5, so that the locking block 5 and the square groove 4 are aligned and the locking block 5 is inserted into the square groove 4. If it is necessary to lock the mounting plate 3 with the locking block 5, the locking block 5 needs to be driven to rotate and misalign with the square groove 4, as follows:

[0029] like Figure 2 and Figure 3 As shown, a symmetrically arranged movable frame 10 is slidably connected to the bracket 1. A first rack 9 is fixedly connected to the movable frame 10 near the rotating shaft 7. The first rack 9 meshes with a first gear 8. The first gear 8 is fixedly connected to the rotating shaft 7. A first bidirectional threaded rod 11 is rotatably connected to the middle of the back of the bracket 1. The first bidirectional threaded rod 11 and the movable frame 10 are threadedly connected.

[0030] After the locking block 5 is inserted into the square slot 4, the first bidirectional threaded rod 11 can be rotated to move the movable frame 10 to the side away from each other. The movable frame 10 drives the first rack 9 to move to the side away from each other. The first rack 9 drives the first gear 8 to rotate 90°. The first gear 8 drives the rotating shaft 7 and the locking block 5 to rotate 90°. The locking block 5 can then restrict the mounting plate 3 so that the COB display screen 2 can be mounted on the bracket 1.

[0031] However, after the locking block 5 limits the mounting plate 3 by rotating, there will inevitably be an assembly gap between it and the inner wall of the square groove 4. Since the mounting plate 3 and the COB display screen 2 itself have a certain weight, the display screen will be suspended on the locking block 5 based on this gap. At this time, the locking block 5 can only play the role of supporting the weight of the display screen and cannot lock and position the COB display screen 2, which leads to the risk of the display screen being relatively loose.

[0032] Therefore, as Figure 3 and Figure 4 As shown, a first spring 12 is symmetrically arranged between the movable part 6 and the bracket 1. A first wedge block 13 is symmetrically arranged and fixedly connected to the movable part 6. A second wedge block 14 is symmetrically arranged and fixedly connected to the movable frame 10. The second wedge block 14 and the first wedge block 13 are pressed together.

[0033] After the first rack 9 drives the first gear 8 to rotate 90°, the moving frame 10 continues to drive the first rack 9 and the second wedge block 14 to move away from each other. When the first rack 9 and the first gear 8 separate, the second wedge block 14 approaches and squeezes the first wedge block 13. The first wedge block 13 drives the moving part 6 to move backward, the first spring 12 is compressed, the moving part 6 moves backward, drives the rotating shaft 7 and the locking block 5 to move backward. After the locking block 5 moves backward and contacts the inner wall of the mounting plate 3, it presses the mounting plate 3, thereby locking the position of the COB display screen 2.

[0034] During the above operation, the operator needs to rotate the first bidirectional threaded rod 11 to achieve the function of limiting and clamping the mounting plate 3 with the locking block 5. If the operator releases the first bidirectional threaded rod 11, the first bidirectional threaded rod 11 may rotate because it is not restrained, causing the locking block 5 to loosen and making it difficult to lock the COB display screen 2. Therefore, if Figure 2 As shown, a worm gear 15 is provided in the middle of the first bidirectional threaded rod 11. The worm gear 15 meshes with a worm 16, which is rotatably connected to the bracket 1. A knob 17 is fixedly connected to the end of the worm 16. By rotating the knob 17, the worm 16 and the worm gear 15 are driven to rotate, thereby driving the first bidirectional threaded rod 11 to rotate. Since the worm gear 15 and the worm 16 have a self-locking function, the first bidirectional threaded rod 11 will be locked, thereby locking the locking block 5.

[0035] COB display screen 2 is usually formed by splicing multiple small screens to form a large flat screen. This installation structure is suitable for the installation and fixing of a single small screen. After splicing, the surfaces of all COB display screens 2 remain flush. When one of the COB display screens 2 is damaged and needs to be repaired, the damaged small screen needs to be disassembled separately. However, since there is no holding structure on the surface of the display screen after splicing and the whole surface is flat, after loosening the locking structure of the small screen, the operator needs to support it from the front to prevent it from falling. At the same time, the small screen needs to be pushed forward from the back of the bracket 1 to be removed, which makes the disassembly operation difficult.

[0036] Therefore, this embodiment sets up an ejection mechanism, such as Figure 2 and Figure 5 As shown, it includes U-shaped blocks 18, which are symmetrically arranged and slidably connected to the bracket 1. An ejector 19 is fixedly connected between the front parts of the U-shaped blocks 18. The ejector 19 is composed of two blocks, which can be connected by welding, bolts and nuts, etc. The ejector 19 is divided into two independent blocks to facilitate the installation of subsequent parts.

[0037] like Figure 5As shown, protrusions 20 are provided on the left side of the top and bottom of the ejector 19. A sliding groove is opened on the back of the mounting plate 3, which slides in conjunction with the ejector 19. The protrusions 20 are used to hold the left side of the mounting plate 3 to prevent the mounting plate 3 from moving out of the ejector 19. Initially, the ejector 19 is in a forward-moving state. When installing the COB display screen 2, the mounting plate 3 only needs to be slid horizontally into the ejector 19, and the ejector 19 supports the mounting plate 3 and the COB display screen 2. The bracket 1 is rotatably connected with symmetrically arranged screws 21. The screws 21 and the U-shaped block 18 are threadedly connected. The end of the screw 21 near the ejector 19 is fixedly connected to a second gear 23. The left side of the upper movable frame 10 is fixedly connected to a second rack 22, and the right side of the lower movable frame 10 is also connected to a second rack 22. The second rack 22 meshes with the adjacent second gear 23.

[0038] When the movable frame 10 moves to the side that is far apart from each other, the movable frame 10 will first drive the second rack 22 to move, the second rack 22 will drive the second gear 23 to rotate, the second gear 23 will drive the screw 21 to rotate, the screw 21 will rotate and drive the U-shaped block 18 and the ejector 19 to move backward, thereby causing the mounting plate 3 and the COB display screen 2 to move backward. The square groove 4 of the mounting plate 3 will engage with the locking block 5. Subsequently, the movable frame 10 will continue to move, causing the locking block 5 to rotate and move backward to press the mounting plate 3.

[0039] When the operator needs to remove the COB display screen 2 for maintenance, the knob 17 can be rotated in reverse. The knob 17 drives the worm gear 16 and worm wheel 15 to reverse, and the worm wheel 15 drives the first bidirectional threaded rod 11 to reverse. The first bidirectional threaded rod 11 reverses, causing the moving frame 10 to move closer to each other. The moving frame 10 moves closer to each other, causing the second rack 22, the second wedge block 14, and the first rack 9 to move closer to each other. The second wedge block 14 will first separate from the first wedge block 13, and then the first spring 12 will drive the moving part 6 to move forward and reset. The moving part 6 will drive the first wedge block 13, the rotating shaft 7, and the locking block 5 to move forward, and the locking block 5 will be reset. After block 5 moves forward and releases mounting plate 3, first rack 9 will mesh with first gear 8. First rack 9 drives first gear 8 to reverse. First gear 8 reverses and drives rotating shaft 7 and locking block 5 to reverse. After locking block 5 reverses and overlaps with square groove 4, second rack 22 continues to move and meshes with second gear 23, driving second gear 23 to reverse. Second gear 23 reverses and drives screw 21 to reverse, causing U-shaped block 18 and ejector 19 to move forward. Ejector 19 moves forward and drives mounting plate 3 and COB display screen 2 to move forward. COB display screen 2 moving forward makes it easier for operators to remove COB display screen 2 that needs maintenance.

[0040] When moving the mounting plate 3 into or out of the ejector 19, due to the weight of both the mounting plate 3 and the COB display screen 2, there is significant friction between the mounting plate 3 and the ejector 19 during insertion, making it difficult to insert the mounting plate 3. Therefore, this embodiment proposes the following solution:

[0041] like Figures 5-6 As shown, the ejector 19 is slidably connected to symmetrically arranged sliding plates 25. The sliding plates 25 are rotatably connected to a plurality of equally spaced rollers 24 on the side away from each other. The ejector 19 is rotatably connected to a pair of symmetrically arranged second bidirectional threaded rods 26. The second bidirectional threaded rods 26 and the sliding plates 25 are threadedly connected. A third gear 27 is fixedly connected to the second bidirectional threaded rods 26. The third gear 27 meshes with a third rack 28. A second spring 29 is connected between the third rack 28 and the ejector 19. The side of the third rack 28 away from the third gear 27 is fixedly connected to an abutment plate 30. The abutment plate 30 and the bracket 1 are in a pressing fit.

[0042] Initially, the outer wall of the roller 24 is in the state of being removed from the ejector 19. This reduces friction when the mounting plate 3 moves into the ejector 19, thus facilitating the installation of the COB display screen 2. When the U-shaped block 18 moves the ejector 19 backward, it will cause the abutment plate 30, the third rack 28, and the third gear 27 to move backward. When the abutment plate 30 moves away from the bracket 1, the compressed second spring 29 moves the third rack 28 forward. The third rack 28 drives the third gear 27 to rotate, and the third gear 27 drives the second bidirectional threaded rod 26 to rotate. The second bidirectional threaded rod 26 drives the sliding plate 25 and the roller 24 to rotate. The rollers move closer to each other, causing the roller 24 to retract into the ejector 19. In this way, the roller 24 will not affect the stability of the mounting plate 3 on the ejector 19. When the U-shaped block 18 moves forward, it drives the ejector 19 forward, which in turn drives the abutment plate 30, the third rack 28, and the third gear 27 forward. After the abutment plate 30 contacts the bracket 1, the abutment plate 30 and the third rack 28 stop moving. The U-shaped block 18 and the ejector 19 continue to move forward, driving the third gear 27 to continue moving forward. At this time, the third rack 28 drives the third gear 27 to reverse, thereby causing the roller 24 to automatically extend out of the ejector 19.

[0043] During the process of the ejector 19 moving backward, causing the mounting plate 3 and COB display screen 2 to move backward, the mounting plate 3 and COB display screen 2 may not be properly positioned, or the COB display screen 2 may move laterally during the movement. This could cause the mounting plate 3 to move backward, and the back of the mounting plate 3 may collide with other displays. Therefore, this embodiment provides the following solution:

[0044] like Figure 5 , Figure 7 and Figure 8As shown, the ejector 19 is slidably connected to the third wedge block 31 on the side away from the protrusion 20. The third wedge block 31 and the ejector 19 are connected by a third spring 32. The left side of the mounting plate 3 has an inclined surface 311, and the inclined surface 311 of the mounting plate 3 and the third wedge block 31 are pressed together.

[0045] When the mounting plate 3 moves to the left, the inclined surface 311 contacts the third wedge block 31, causing the third wedge block 31 to move closer to each other. The third spring 32 is compressed. When the right side of the mounting plate 3 separates from the third wedge block 31, the third spring 32 drives the third wedge block 31 to move further away from each other, thus restricting the right side of the mounting plate 3. This can prevent the mounting plate 3 from shifting on the ejector 19.

[0046] The mounting plate 3 is restrained by the third wedge block 31. However, when the operator needs to remove the mounting plate 3, the third wedge block 31 needs to be pressed down manually to remove it from the mounting plate 3, which is very inconvenient. Therefore, the following solution is proposed:

[0047] like Figure 5 and Figure 7 As shown, a fourth rack 34 is fixedly connected to the third wedge block 31. The fourth rack 34 meshes with a fourth gear 341. The fourth gear 341 is fixedly connected to a rotating rod 331. The rotating rod 331 and the ejector 19 are rotatably connected. A one-way gear 33 is fixedly connected to the rear of the rotating rod 331. The one-way gear 33 meshes with a fifth rack 35. The fifth rack 35 and the sliding plate 25 are fixedly connected. A telescopic rod 37 is fixedly connected to the right side of the protrusion 20. A push-out plate 36 is fixedly connected to the right end of the telescopic rod 37. A fourth spring 38 is connected between the push-out plate 36 and the protrusion 20. The fourth spring 38 is wound around the telescopic rod 37.

[0048] When the mounting plate 3 moves into the ejector 19, it squeezes the ejector plate 36, causing the ejector plate 36 to move to the left. The telescopic rod 37 and the fourth spring 38 are compressed. Then, the third wedge block 31 abuts against the right side of the mounting plate 3. Afterward, when the sliding plate 25 moves towards the side that is closer to each other, it causes the roller 24 and the fifth rack 35 to move towards the side that is closer to each other. The fifth rack 35 drives the one-way gear 33 to rotate. At this time, the one-way gear 33 is spinning freely, so the fourth gear 341 will not rotate. The third wedge block 31 keeps restricting the COB display screen 2. When the ejector 19 moves forward, the sliding plate 25 moves away from each other, causing the roller 24 to move out, and the fifth rack 35 moves, driving the one-way gear 341 to rotate. 3. Reverse rotation: At this time, the one-way gear 33 reverses, driving the rotating rod 331 and the fourth gear 341 to reverse. The fourth gear 341 reverses, driving the fourth rack 34 and the third wedge block 31 to move closer to each other. The fourth spring 38 is compressed. After the third wedge block 31 no longer presses against the mounting plate 3, the compressed fourth spring 38 drives the push plate 36 to move to the right. The push plate 36 pushes the mounting plate 3 and the COB display screen 2 to the right. The push plate 36 passes the third wedge block 31. The fifth rack 35 continues to move away from each other and will separate from the one-way gear 33. When the operator removes the mounting plate 3 and the COB display screen 2, the third spring 32 drives the third wedge block 31 to move and reset.

[0049] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A COB display screen mounting structure, comprising a bracket (1) for mounting on a load-bearing structure, a COB display screen (2) mounted on the bracket (1), the COB display screen (2) comprising a display screen and a housing, characterized in that, The COB display screen (2) has a mounting plate (3) welded to the back of the cabinet. The bracket (1) is provided with symmetrically arranged moving parts (6). The moving parts (6) are rotatably connected with symmetrically arranged rotating shafts (7). The bracket (1) is provided with a locking block (5). The locking block (5) and the square groove (4) are engaged.

2. The COB display screen mounting structure according to claim 1, characterized in that, It also includes a movable frame (10), on which the bracket (1) is slidably connected a symmetrically arranged movable frame (10), on which a first rack (9) is fixedly connected near the rotating shaft (7), the first rack (9) meshes with a first gear (8), the first gear (8) is fixedly connected to the rotating shaft (7), and a first bidirectional threaded rod (11) is rotatably connected to the middle of the back of the bracket (1), the first bidirectional threaded rod (11) and the movable frame (10) are threadedly connected.

3. The COB display screen mounting structure according to claim 2, characterized in that, It also includes a first spring (12), the first spring (12) is symmetrically arranged and connected between the moving part (6) and the bracket (1), the moving part (6) is fixedly connected with a first wedge block (13) symmetrically arranged, the moving frame (10) is fixedly connected with a second wedge block (14) symmetrically arranged, and the second wedge block (14) and the first wedge block (13) are pressed together.

4. The COB display screen mounting structure according to claim 3, characterized in that, It also includes a worm gear (15), which is located in the middle of the first bidirectional threaded rod (11). The worm gear (15) meshes with a worm (16), and the worm (16) and the bracket (1) are rotatably connected. A knob (17) is fixedly connected to the end of the worm (16).

5. The COB display screen mounting structure according to claim 4, characterized in that, It also includes U-shaped blocks (18), symmetrically arranged U-shaped blocks (18) are slidably connected to the bracket (1), and ejector (19) is fixedly connected between the front parts of the U-shaped blocks (18). Protrusions (20) are provided on the left side of the top and bottom of the ejector (19). A sliding groove is opened on the back of the mounting plate (3), and the sliding groove and the ejector (19) are slidably engaged. A symmetrically arranged screw (21) is rotatably connected to the bracket (1). The screw (21) and the U-shaped blocks (18) are threadedly connected. A second gear (23) is fixedly connected to one end of the screw (21) near the ejector (19). A second rack (22) is fixedly connected to the left side of the upper movable frame (10), and a second rack (22) is also connected to the right side of the lower movable frame (10). The second rack (22) meshes with the adjacent second gear (23).

6. The COB display screen mounting structure according to claim 5, characterized in that, It also includes a sliding plate (25), which is symmetrically arranged and slidably connected to the ejector (19). Multiple equally spaced rollers (24) are rotatably connected to the side of the sliding plate (25) away from each other. A pair of symmetrically arranged second bidirectional threaded rods (26) are rotatably connected to the ejector (19). The second bidirectional threaded rods (26) and the sliding plate (25) are threadedly connected. A third gear (27) is fixedly connected to the second bidirectional threaded rod (26). The third gear (27) meshes with a third rack (28). A second spring (29) is connected between the third rack (28) and the ejector (19). A stop plate (30) is fixedly connected to the side of the third rack (28) away from the third gear (27). The stop plate (30) and the bracket (1) are pressed together.

7. The COB display screen mounting structure according to claim 6, characterized in that, It also includes a third wedge block (31), which is slidably connected to the ejector (19) on the side away from the protrusion (20). A third spring (32) is connected between the third wedge block (31) and the ejector (19). A slope (311) is opened on the left side of the mounting plate (3), and the slope (311) of the mounting plate (3) and the third wedge block (31) are pressed together.

8. The COB display screen mounting structure according to claim 7, characterized in that, It also includes a fourth rack (34), which is fixedly connected to the third wedge block (31). The fourth rack (34) meshes with a fourth gear (341), which is fixedly connected to a rotating rod (331). The rotating rod (331) and the ejector (19) are rotatably connected. A one-way gear (33) is fixedly connected to the rear of the rotating rod (331). The one-way gear (33) meshes with a fifth rack (35). The fifth rack (35) and the sliding plate (25) are fixedly connected. A telescopic rod (37) is fixedly connected to the right side of the protrusion (20). A push plate (36) is fixedly connected to the right end of the telescopic rod (37). A fourth spring (38) is connected between the push plate (36) and the protrusion (20). The fourth spring (38) is wound around the telescopic rod (37).

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