Display screen

Abstract

A display screen, comprising a cabinet frame (1), a quick lock device (2), a curvature lock device (3), and a control box locking device (5). The quick lock device (2) comprises a first lock body (21) and a second lock body (22), a first end of the cabinet frame (1) in a first direction is provided with the first lock body (21), a second end of the cabinet frame (1) in the first direction is provided with the second lock body (22), and the first lock body (21) of one of two adjacent cabinet frames (1) in the first direction is connected to the second lock body (22) of the other; one side of the cabinet frame (1) in a second direction is provided with an curvature lock mechanism, the other side thereof is provided with a second lock rod assembly (39), the curvature lock mechanism of one of two adjacent cabinet frames (1) in the second direction is connected to the second lock rod assembly (39) of the other, and the curvature lock device (3) is configured to adjust the tiling angle of two adjacent cabinet frames (1) in the second direction; a control box body (51) is locked to the cabinet frame (1) by means of a locking structure.

Description

Display screen

[0001] The present application claims priority to the Chinese patent application No. 202411811655.7, filed on December 10, 2024, with the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of Light Emitting Diode (LED) display screen, for example, to a display screen. BACKGROUND

[0003] As a main carrier of modern media transmission, LED display screens are widely used in various occasions, especially in outdoor advertising, information publishing and other fields, and play an irreplaceable role. However, the LED display screen in the related art still has some deficiencies in the fixation of the box frame and the control box.

[0004] At present, most of the LED display screens are assembled by splicing multiple display screens when used outdoors. The box frames of these display screens are often connected by screws. Although this connection method is stable, it is relatively cumbersome in the process of installation and maintenance. Screw connection requires professional tools and certain technology, which not only increases the installation cost, but also prolongs the installation time. At the same time, when the display screen needs to be disassembled or replaced, the disassembly process of screw connection is also complex, which is not conducive to quick maintenance.

[0005] In addition, the control box of the display screen also faces the same problem. In order to disassemble and maintain the control box, screws are usually used to fix the control box on the LED display screen box, or four snap locks are used for fixation. Although the control box can be disassembled and installed on the LED display screen box, the disassembly and assembly steps are cumbersome and difficult to complete with one hand, which cannot realize quick maintenance. SUMMARY

[0006] The present application provides a display screen which can not only reduce the installation and maintenance cost, improve the work efficiency, but also enhance the stability and safety of the display screen, prolong its service life; the cam lock device adjusts the splicing angle of the adjacent two box frames along the horizontal direction; the control box body can be quickly disassembled and assembled with one hand, which is convenient for maintenance.

[0007] The present application provides a display screen, comprising:

[0008] a box frame;

[0009] The quick locking device comprises a first lock body and a second lock body, the first lock body is arranged at a first end of the box frame along a first direction, the second lock body is arranged at a second end of the box frame along the first direction, and the first lock body of one of the two adjacent box frames along the first direction is connected with the second lock body of the other box frame along the first direction;

[0010] The arc locking device comprises an arc locking mechanism and a second lock rod assembly, the arc locking mechanism is arranged at one side of the box frame along a second direction, the second lock rod assembly is arranged at the other side of the box frame along the second direction, the arc locking mechanism of one of the two adjacent box frames along the second direction is connected with the second lock rod assembly of the other box frame along the second direction, and the arc locking device is arranged to adjust the joint angle of the two adjacent box frames along the second direction;

[0011] The control box locking device comprises a control box body and a locking structure, the control box body is clamped with the box frame through the locking structure, and the locking structure comprises:

[0012] The driving assembly is rotationally connected to the control box body, the driving assembly has a locking state of being clamped with the control box body and an unlocking state of being relatively rotated with the control box body;

[0013] The clamping piece is connected to the driving assembly and is at least partially arranged in the control box body, the driving assembly is rotatable to drive the clamping piece to slide in the control box body, so that the clamping piece is clamped with the box frame. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic view of a display screen provided by an embodiment of the present application;

[0015] Fig. 2 is a structural schematic view of a quick locking device provided by an embodiment of the present application;

[0016] Fig. 3 is an exploded view of the quick locking device provided by an embodiment of the present application;

[0017] Fig. 4 is a sectional view of a first limiting assembly and a first lock rod of the quick locking device provided by an embodiment of the present application;

[0018] Fig. 5 is a sectional view of a first lock rod assembly and a locking sleeve of the quick locking device provided by an embodiment of the present application;

[0019] Fig. 6 is a top view of the first operating handle of the quick locking device provided by an embodiment of the present application in a locking state and an unlocking state;

[0020] Fig. 7 is a structural schematic view of an arc locking device provided by an embodiment of the present application;

[0021] Fig. 8 is a sectional view of the arc locking device provided by an embodiment of the present application when the locking angle is 0°.

[0022] Figure 9 is a cross-sectional view of the arc lock device provided in the embodiment of this application when unlocking at an angle;

[0023] Figure 10 is an exploded view of the arc lock device provided in an embodiment of this application;

[0024] Figure 11 is a schematic diagram of the structure of the fixed pressure block provided in an embodiment of this application;

[0025] Figure 12 is a structural schematic diagram of the third seat of the arc lock base provided in the embodiment of this application;

[0026] Figure 13 is a schematic diagram of the structure of the upper cover of the arc lock base provided in an embodiment of this application;

[0027] Figure 14 is a structural schematic diagram of the angle adjustment knob and connecting rod provided in an embodiment of this application;

[0028] Figure 15 is a schematic diagram of the structure of the latch lock plate provided in the embodiment of this application;

[0029] Figure 16 is a top view of the arc lock device provided in an embodiment of this application;

[0030] Figure 17 is a cross-sectional view of the arc locking device provided in the embodiment of this application when the locking angle is -10°;

[0031] Figure 18 is a cross-sectional view of the arc locking device provided in the embodiment of this application when the locking angle is 15°;

[0032] Figure 19 is a structural schematic diagram of the box frame provided in an embodiment of this application;

[0033] Figure 20 is a schematic diagram of the structure of the display screen provided in an embodiment of this application;

[0034] Figure 21 is an exploded view of the box frame provided in an embodiment of this application;

[0035] Figure 22 is a side sectional view of the display screen when the protective plate provided in the embodiment of this application is in the extended state;

[0036] Figure 23 is a magnified view of part A in Figure 22;

[0037] Figure 24 is a side sectional view of the display screen when the protective plate provided in the embodiment of this application is in a retracted state;

[0038] Figure 25 is a magnified view of part B in Figure 24;

[0039] Figure 26 is an exploded view of the cabinet frame and display module provided in an embodiment of this application;

[0040] Figure 27 is a front view of the box frame provided in an embodiment of this application;

[0041] Figure 28 is a schematic diagram of the display module provided in the embodiment of this application installed on the cabinet frame but not locked;

[0042] Figure 29 is a schematic diagram of the display module provided in the embodiment of this application being installed and locked on the cabinet frame;

[0043] Figure 30 is a schematic diagram of the structure of the display module provided in an embodiment of this application;

[0044] Figure 31 is an exploded view of the display module provided in an embodiment of this application;

[0045] Figure 32 is a cross-sectional view of the locking device in the display module provided in the embodiment of this application;

[0046] Figure 33 is a structural schematic diagram of the second operating handle and the disassembly shaft provided in an embodiment of this application;

[0047] Figure 34 is a cross-sectional view of the display module unlocked by maintenance pins according to an embodiment of this application;

[0048] Figure 35 is a cross-sectional view of the display module locked by maintenance ejector pins according to an embodiment of this application;

[0049] Figure 36 is a first structural schematic diagram of the box frame and the control box with locking structure provided in the embodiment of this application;

[0050] Figure 37 is a second structural schematic diagram of the box frame and the control box with locking structure provided in the embodiment of this application;

[0051] Figure 38 is a magnified view of a portion of point C in Figure 37;

[0052] Figure 39 is a partial schematic diagram of the box frame and the control box with locking structure provided in the embodiment of this application;

[0053] Figure 40 is a structural schematic diagram of the control box with a locking structure provided in an embodiment of this application;

[0054] Figure 41 is a partial exploded view of the control box with a locking structure provided in an embodiment of this application;

[0055] Figure 42 is a first side view of a control box with a locking structure provided in an embodiment of this application;

[0056] Figure 43 is a first cross-sectional view of a control box with a locking structure provided in an embodiment of this application;

[0057] Figure 44 is a magnified view of part D in Figure 43;

[0058] Figure 45 is a second cross-sectional view of the control box with a locking structure provided in an embodiment of this application;

[0059] Figure 46 is a magnified view of a portion of point E in Figure 45;

[0060] Figure 47 is a second side view of the control box with a locking structure provided in an embodiment of this application;

[0061] Figure 48 is a third sectional view of the control box with a locking structure provided in an embodiment of this application;

[0062] Figure 49 is a magnified view of part F in Figure 48.

[0063] The markings in the image are as follows:

[0064] 1. Box frame; 11. Mounting vertical plate; 12. Mounting bracket; 13. Frame body; 131. Receiving cavity; 1311. Inclined surface; 13111. First groove; 132. Guide screw; 133. Baffle; 1331. Second connecting hole; 1332. Second through hole; 134. Second mounting hole; 135. Fixing screw; 14. Protective mechanism; 141. Protective plate; 1411. Second limiting hole; 1412. Second clearance groove; 142. Connecting bracket; 1421. Second connecting post; 1422. Guide groove; 143. First elastic element; 144. Second limiting assembly; 1441. Second limiting post; 14411. Second post; 14412. Limiting part; 14413. Pressing part; 1442. Second limiting spring; 15. Magnet; 16. Snap-fit ​​position; 17. Snap-fit ​​part;

[0065] 2. Quick-lock device; 21. First lock body; 211. Locking seat; 2111. First seat body; 21111. First limiting hole; 2112. First connecting post; 2113. First connecting hole; 212. First locking rod assembly; 2121. First locking rod; 21211. Extension limiting groove; 21212. First limiting ring; 21213. Locking limiting groove; 21214. Rubber sleeve; 21215. Snap connector; 21216. Snap groove; 2122. Locking rod spring; 213. First limiting assembly; 2131, First limiting post; 21311, Limiting head; 21312, First column body; 21313, Spring mounting slot; 2132, First limiting spring; 2133, Pressure plate; 2134, Fixing plate; 214, Locking sleeve; 2141, Vertical section; 2142, Stepped hole; 215, First operating handle; 2151, Locking mark; 2152, Unlocking mark; 22, Second lock body; 221, Lock plate; 2211, First lock hole; 222, Telescopic handle; 223, Second base body;

[0066] 3. Arc lock device; 31. Arc lock base; 311. Third base; 3111. First slide groove; 312. Top cover; 3121. First clearance groove; 3122. First pressing tooth; 3123. Slider positioning hole; 3124. Angle scale line;

[0067] 32. Bolt lock assembly; 321. Bolt lock plate; 3211. Second lock hole; 32111. First through hole; 32112. Lock hole; 3212. Handle; 322. Lock plate side plate; 323. Lock plate cover plate; 324. Second spring;

[0068] 33. Curved locking slider; 331. First mounting hole; 332. Second positioning bead; 333. Second slide groove; 334. Extension; 3341. Clearance hole;

[0069] 34. Angle adjustment knob; 341. First positioning bead;

[0070] 35. Connecting rod; 351. Threaded hole;

[0071] 36. Fixed pressure block; 361. Pressure head; 3611. Second pressing tooth; 3612. First locking plane; 36121. Locking positioning hole; 3613. First unlocking plane; 36131. ​​Unlocking positioning hole; 3614. Limiting block; 3615. Transition slope; 3616. Alignment block; 362. First sleeve; 3621. Through hole;

[0072] 37. The first spring;

[0073] 38. Limit screw;

[0074] 39. Second locking rod assembly; 391. Second locking rod; 392. Locking rod mounting plate; 393. Locking handle;

[0075] 4. Display module; 41. First bottom shell; 411. Accommodating groove; 412. Limiting protrusion; 413. First support block; 4131. First support groove; 414. Iron sheet; 415. Protruding column;

[0076] 42. LED light panel;

[0077] 43. Maintenance hole; 431. Unlocking hole; 432. Locking hole; 4301. First hole; 4302. Second hole;

[0078] 44. Back cover; 441. First clearance opening; 442. Second clearance opening; 443. Third clearance groove; 444. Second recess;

[0079] 45. Locking device; 451. Disassembly / assembly shaft; 4511. Gear structure; 4512. Maintenance part; 45121. Second unlocking plane; 45122. Second locking plane; 45123. Connecting arc surface; 45124. First limiting groove; 45125. Second limiting groove; 4513. Second limiting ring; 452. First locking element; 4521. First snap-fit ​​part; 4522. First rack structure; 453. Second locking element; 4531. Second snap-fit ​​part; 4532. Second rack structure; 454. Second operating handle;

[0080] 46. ​​Maintain the ejector pin;

[0081] 47. First screw;

[0082] 5. Control box locking device; 51. Control box body; 511. Hook; 512. Positioning component;

[0083] 52. Drive assembly; 521. Main body; 522. Locking element; 5221. Cylindrical protrusion; 523. Button; 524. Second elastic element; 525. Fastener; 526. Rotating connector;

[0084] 53. Clamping component; 531. Guide hole; 532. Oblong hole; 533. Snap-fit ​​end;

[0085] 54. First connector; 55. Second connector; 56. Third connector; 57. Ball screw. Detailed Implementation

[0086] The present application will now be described in conjunction with the accompanying drawings and embodiments. The embodiments described herein are for illustrative purposes only. For ease of description, only the parts of the structure relevant to the present application are shown in the accompanying drawings.

[0087] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the meaning of the above terms in this application as appropriate.

[0088] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or indicating that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or indicating that the first feature is at a lower horizontal level than the second feature.

[0089] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0090] As shown in Figures 1 and 36-42, this embodiment provides a display screen, which includes a cabinet frame 1, a quick-lock device 2, an arc-shaped lock device 3, and a control box locking device 5. The quick-lock device 2 includes a first lock body 21 and a second lock body 22. The first lock body 21 is provided at a first end along a first direction of the cabinet frame 1, and the second lock body 22 is provided at a second end along the first direction. The first lock body 21 of one of two adjacent cabinet frames 1 along the first direction is connected to the second lock body 22 of the other. The arc-shaped lock device 3 includes an arc-shaped lock mechanism and a second lock rod assembly 39. The arc-shaped lock mechanism is provided on one side along the second direction of the cabinet frame 1, and the second lock rod assembly 39 is provided on the other side. The arc-shaped lock mechanism of one of two adjacent cabinet frames 1 along the second direction is connected to the second lock rod assembly 39 of the other. The arc-shaped lock device 3 is configured for adjustment. The splicing angle of two adjacent box frames 1 along the second direction; the control box locking device 5 includes a control box body 51 and a locking structure. The control box body 51 is engaged with the box frame 1 through the locking structure. The locking structure includes a drive assembly 52 and a clamping member 53. The drive assembly 52 is rotatably connected to the control box body 51 and has a locked state engaged with the control box body 51 and an unlocked state that rotates relative to the control box body 51. The clamping member 53 is connected to the drive assembly 52 and is at least partially slidably disposed within the control box body 51. The rotation of the drive assembly 52 can drive the clamping member 53 to slide within the control box body 51, so that the clamping member 53 is engaged with the box frame 1. In this embodiment, the first direction is the length direction of the box frame 1, and the second direction is the width direction of the box frame 1.

[0091] During assembly, the first locking body 21 of one of the two adjacent cabinet frames 1 along the first direction is connected to the second locking body 22 of the other, thus connecting the two adjacent cabinet frames 1 along the first direction. Similarly, the arc-shaped locking mechanism of one of the two adjacent cabinet frames 1 along the second direction is connected to the second locking rod assembly 39 of the other, thereby fixing the adjacent displays together. This not only reduces installation and maintenance costs and improves work efficiency, but also enhances the stability and security of the displays and extends their service life. Furthermore, the arc-shaped locking device 3 adjusts the splicing angle of the two adjacent cabinet frames 1 along the second direction, offering convenient operation, improving angle adjustment efficiency, and meeting the angle requirements of the displays. Furthermore, the control box 51 is latched to the housing frame 1 by a locking structure. The locking structure includes a drive assembly 52 and a latching member 53. The drive assembly 52 is rotatably connected to the control box 51 and has a locked state where it is latched to the control box 51 and an unlocked state where it rotates relative to the control box 51. The latching member 53 is connected to the drive assembly 52 and is at least partially slidably disposed within the control box 51. The rotation of the drive assembly 52 can drive the latching member 53 to slide within the control box 51 so that the latching member 53 is latched to the housing frame 1. By setting up the drive assembly 52 and the locking member 53, when the drive assembly 52 is in the unlocked state, rotating the drive assembly 52 will cause the locking member 53 to slide inside the control box 51, thereby pushing the locking member 53 to the corresponding position of the box frame 1 and engaging with the box frame 1. Then, the drive assembly 52 will be engaged with the control box 51 to keep the drive assembly 52 in the locked state, thereby installing the control box 51 on the box frame 1. When it is necessary to remove the control box 51, the drive assembly 52 can be operated with one hand to unlock the drive assembly 52, and rotating the drive assembly 52 will cause the locking member 53 to disengage from the engagement position 16 of the box frame 1. The structure is simple and easy to operate, and it can achieve quick disassembly and assembly with one hand for easy maintenance.

[0092] For example, the box frame 1 is provided with two mounting vertical plates 11 at both ends along the first direction. The two mounting vertical plates 11 at the first end along the first direction are each connected to a first lock body 21, and the two mounting vertical plates 11 at the second end along the first direction are each connected to a second lock body 22. The first lock body 21 and the second lock body 22 are both fixedly connected to the mounting vertical plates 11 by fastening screws.

[0093] In the related technology, when locking two adjacent box frames 1, the locking rod of the quick-locking device 2 cannot maintain the extended state to position the two adjacent box frames 1, which makes it difficult to position the two box frames 1 and reduces the installation efficiency.

[0094] To address the aforementioned shortcomings in related technologies, as shown in Figures 2-6, the first lock body 21 of the quick-lock device 2 includes a locking seat 211 and a first locking rod assembly 212, and the second lock body 22 includes a locking plate 221. The first locking rod assembly 212 is configured to lock the locking seat 211 and the locking plate 221. The locking seat 211 includes a first base 2111 and a first connecting post 2112. The first base 2111 is located at one end of the first connecting post 2112 near the locking plate 221 of the second lock body 22, and the center of the first base 2111 has a first connecting hole 2113 that passes through the first connecting post 2112. The first locking rod assembly 212 includes a first locking rod 2121, which passes through the first connecting hole 2113 and extends out of the first base 2111 to connect with the locking plate 221.

[0095] The second lock body 22 also includes a second base 223 and a telescopic handle 222. The lock plate 221 is telescopically disposed within the second base 223. The telescopic handle 222 is disposed on one side of the second base 223 and connected to the lock plate 221. The lock plate 221 is provided with a first lock hole 2211, the inner diameter of which is larger than the outer diameter of the first lock rod 2121. The second base 223 has a through hole at its center. The first lock rod 2121 has a locking groove 21216 at one end near the lock plate 221 of the second lock body 22. The first lock rod 2121 extends out of the second base 223 through the through hole and the first lock hole 2211. By moving the lock plate 221 with the telescopic handle 222, the locking groove 21216 engages with the lock plate 221, thereby fixing the first lock rod 2121 and the lock plate 221.

[0096] The outer periphery of the first locking rod 2121 is provided with an extension limiting groove 21211; the first seat 2111 is provided with a first limiting component 213 on the side near the first connecting post 2112, and the first limiting component 213 is located circumferentially to the first connecting post 2112; the first limiting component 213 includes a first limiting post 2131, which is telescopically oriented, passing through the first connecting post 2112 and extending into the first connecting hole 2113. The extension of the first limiting post 2131 can cooperate with the extension limiting groove 21211 to keep the first locking rod 2121 in the extended state. When connecting two adjacent box frames 1, the first locking rod 2121 extending from one box frame 1 is used to cooperate with the locking piece 221 on the other box frame 1 to achieve positioning. After positioning, the first locking rod 2121 is operated to lock the locking seat 211 and the locking piece 221. The first locking rod 2121 of the quick-locking device 2 can remain extended to position the two box frames 1, making it easier to lock the two box frames 1 and improving installation efficiency.

[0097] For example, a first limiting hole 21111 is provided on the side of the first base 2111 near the first connecting post 2112, and the first limiting hole 21111 is located circumferentially to the first connecting post 2112. A first limiting component 213 is telescopically disposed within the first limiting hole 21111. A communicating hole connecting the first limiting hole 21111 and the first connecting hole 2113 is provided on the outer periphery of the locking base 211. The first limiting post 2131 extends into the first connecting hole 2113 through the communicating hole. When the first locking rod 2121 passes through the first connecting hole 2113, the first limiting post 2131 retracts. When the first locking rod 2121 extends out of the first base 2111 through the first connecting hole 2113 and connects with the first locking hole 2211 on the second base 223, the first limiting post 2131 extends and can cooperate with the extension limiting groove 21211 so that the first locking rod 2121 remains in the extended state.

[0098] The first limiting component 213 also includes a first limiting spring 2132 and a clamping plate 2133. The first limiting spring 2132 is located at the end of the first limiting post 2131 away from the first connecting post 2112, and the clamping plate 2133 is located at the end of the first limiting post 2131 close to the first connecting post 2112. The first limiting post 2131 includes a limiting head 21311 and a first post 21312. The limiting head 21311 is connected to the end of the first post 21312 away from the first connecting post 2112. The end of the limiting head 21311 away from the first post 21312 is provided with a spring mounting groove 21313. The first end of the first limiting spring 2132 is connected to the end of the first limiting hole 21111 away from the communicating hole. The second end of the first limiting spring 2132 is connected to the bottom of the groove of the spring mounting groove 21313. The limiting head 21311 is slidably disposed in the first limiting hole 21111. The clamping plate 2133 is located between the limiting head 21311 and the first connecting post 2112. The clamping plate 2133 applies a force to the first limiting post 2131, causing the first limiting post 2131 to compress the first limiting spring 2132 and retract. When the force applied to the clamping plate 2133 is removed, the first limiting post 2131 can extend under the elastic restoring force of the first limiting spring 2132 to cooperate with the extended limiting groove 21211.

[0099] In some embodiments, the first limiting component 213 further includes a fixing piece 2134, which is disposed at one end of the first limiting hole 21111 away from the first connecting post 2112, and the fixing piece 2134 is interference-fitted with the first limiting hole 21111. The first end of the first limiting spring 2132 is connected to the fixing piece 2134, and the second end of the first limiting spring 2132 is connected to the first limiting post 2131. To facilitate the installation of the first limiting post 2131, the end of the first limiting hole 21111 away from the first connecting post 2112 is provided through. The clamping plate 2133 is provided with a through hole. The first limiting post 2131 is inserted into the through hole 21111 through the end of the first limiting hole 21111 and placed in the first limiting hole 21111. Then, the first limiting spring 2132 is placed in the spring mounting groove 21313. Finally, the fixing plate 2134 is interference-fitted with the first limiting hole 21111, so that the first end of the first limiting spring 2132 abuts against the fixing plate 2134 and the second end of the first limiting spring 2132 abuts against the bottom of the spring mounting groove 21313, providing elastic support for the first limiting post 2131.

[0100] In related technologies, the locking rod is usually moved axially along the connecting hole by an operating component, which is convenient for the installer. However, the operating component moves axially along the connecting hole with the locking rod, which requires sufficient axial movement space on the box frame 1. This is not suitable for box frames 1 with limited axial movement space.

[0101] To improve the versatility of the quick-lock device 2, the first lock body 21 also includes a locking sleeve 214. One end of the locking sleeve 214 near the first base 2111 is rotatably connected to the first connecting post 2112. The first locking rod 2121 passes through the locking sleeve 214 and the first connecting hole 2113 in sequence. The outer periphery of the locking sleeve 214 cooperates with the first limiting component 213. Rotating the locking sleeve 214 can extend and retract the first limiting post 2131, thereby driving the first locking rod 2121 to move. By rotating the locking sleeve 214, the first limiting post 2131 is driven to extend and retract, thereby limiting and unlocking the first locking rod 2121 within the first connecting hole 2113. When the first locking rod 2121 is not limited within the first connecting hole 2113, it remains extended. When the first locking rod 2121 is unlocked within the first connecting hole 2113, it drives the second seat 223 to move closer to the first seat 2111, connecting the first seat 2111 and the second seat 223 together, thus connecting the two adjacent box frames 1. When disassembling the two box frames 1, the locking plate 221 is moved by the telescopic handle 222, causing the first locking rod 2121 to disengage from the locking plate 221, allowing the second seat 223 to move away from the first seat 2111.

[0102] For example, the outer periphery of the first connecting post 2112 is provided with an external thread, and the inner wall of the locking sleeve 214 near the end of the first connecting post 2112 is provided with an internal thread. The internal thread engages with the external thread, allowing the locking sleeve 214 and the first connecting post 2112 to rotate relative to each other. The threaded engagement between the locking sleeve 214 and the first connecting post 2112 enables the locking sleeve 214 to be connected to the locking seat 211, and the locking sleeve 214 to rotate relative to the first connecting post 2112. In other embodiments, the locking sleeve 214 may also be rotatably connected to the first connecting post 2112 via a bearing.

[0103] The locking sleeve 214 is configured with a stepped hole 2142 at one end away from the first connecting post 2112. The stepped hole 2142 is configured with a larger inner diameter at one end near the internal thread and a smaller inner diameter at the other end away from the internal thread. The inner diameter of the smaller inner diameter hole is larger than the outer diameter of the first locking rod 2121. After the locking sleeve 214 is threadedly connected to the first connecting post 2112, the first locking rod 2121 is inserted into the smaller inner diameter hole, the larger inner diameter hole and the first connecting hole 2113 of the stepped hole 2142 in sequence and then extends out of the first seat 2111 and connects to the first locking hole 2211 on the second seat 223.

[0104] For example, the first locking rod assembly 212 further includes a locking rod spring 2122, which is sleeved on the outside of the first locking rod 2121. The first locking rod 2121 is provided with a first limiting ring 21212 at the end away from the locking piece 221. The first end of the locking rod spring 2122 abuts against the end face of the first connecting post 2112, and the second end of the locking rod spring 2122 abuts against the first limiting ring 21212. When the first locking rod 2121 extends out of the first seat 2111 after passing through the first connecting hole 2113 and connects with the locking plate 221, the locking rod spring 2122 is compressed. When the locking sleeve 214 rotates counterclockwise by 120°, the threaded length between the locking sleeve 214 and the first connecting post 2112 is shortened, the first limiting post 2131 disengages from the extending limiting groove 21211, and the first locking rod 2121 moves away from the first seat 2111 along with the locking sleeve 214. The compression of the locking rod spring 2122 decreases. When the second seat 223 abuts against the first seat 2111, the two adjacent box frames 1 are locked and fixed. The locking rod spring 2122 provides a certain buffer force for the movement of the first locking rod 2121, alleviating the collision force between the second seat 223 and the first seat 2111 during the process of the first locking rod 2121 driving the second seat 223 to move closer to the first seat 2111, thus avoiding collision damage.

[0105] A rubber sleeve 21214 is provided at the end of the first limiting ring 21212 away from the first locking rod 2121. The rubber sleeve 21214 engages with a snap-fit ​​connector 21215 located on one side of the first limiting ring 21212. By providing the rubber sleeve 21214, damage to the display module 4 is prevented when the first locking rod 2121 moves the second lock body 22 towards the locking seat 211, as this would cause the end of the first locking rod 2121 away from the second lock body 22 to collide with the display module 4.

[0106] In some embodiments, a gap is left between the first limiting hole 21111 and the first connecting post 2112, and the gap is located at the end away from the first seat 2111. The locking sleeve 214 extends into the gap and cooperates with the pressing plate 2133. Rotating the locking sleeve 214 can extend and retract the first limiting post 2131. The locking sleeve 214 applies a force to the pressing plate 2133, thereby realizing the extension and retraction of the first limiting post 2131.

[0107] For example, the outer periphery of the locking sleeve 214 is provided with a vertical cut surface 2141. When the first limiting post 2131 extends and engages with the extension limiting groove 21211, the pressing plate 2133 abuts against the vertical cut surface 2141. When the locking sleeve 214 is rotated, the pressing plate 2133 abuts against the outer periphery of the locking sleeve 214, which can cause the first limiting post 2131 to retract and disengage from the extension limiting groove 21211. Since the distance from the vertical cut surface 2141 to the axis of the locking sleeve 214 is less than the radius of the locking sleeve 214, when the locking sleeve 214 rotates 120° counterclockwise as shown in Figure 6, the locking sleeve 214 moves away from the first seat 2111. When the pressing plate 2133 changes from abutting against the vertical cut surface 2141 to abutting against the outer periphery of the locking sleeve 214, the pressing plate 2133 drives the first limiting post 2131 to move away from the first connecting post 2112, compressing the locking rod spring 2122, so that the first limiting post 2131 disengages from the protruding limiting groove 21211. Thus, the first locking rod 2121 can drive the second locking body 22 to move along the axis of the first connecting hole 2113 towards the first seat 2111, until the second seat 223 and the first seat 2111 abut against each other, locking the two adjacent box frames 1.

[0108] In some embodiments, a locking limiting groove 21213 is further provided on the outer periphery of the first locking rod 2121. The depth of the locking limiting groove 21213 is less than the depth of the protruding limiting groove 21211, and the locking limiting groove 21213 extends along the length direction of the first locking rod 2121. The protruding limiting groove 21211 is located at the end of the locking limiting groove 21213 away from the connection between the first locking rod 2121 and the locking piece 221. By providing the locking limiting groove 21213, the distance by which the first locking rod 2121 drives the second lock body 22 to move axially along the first connecting hole 2113 after the first limiting post 2131 disengages from the protruding limiting groove 21211.

[0109] In some embodiments, a first operating handle 215 is provided on the outer periphery of the locking sleeve 214, allowing the locking sleeve 214 to be rotated via the first operating handle 215. By providing the first operating handle 215, it is easier for the operator to rotate the locking sleeve 214, making the locking and unlocking operations less strenuous.

[0110] In some embodiments, a locking mark 2151 and an unlocking mark 2152 are respectively provided on opposite sides of the first operating handle 215. When operating, the operator can unlock the first operating handle 215 by rotating it towards the unlocking mark 2152; and lock it by rotating it towards the locking mark 2151. By providing the locking mark 2151 and unlocking mark 2152, the operator can more intuitively see the rotation direction of the first operating handle 215, making operation more convenient.

[0111] For example, the locking indicator 2151 is set as a locked lock, and the unlocking indicator 2152 is set as an unlocked lock, and they are distinguished by different colors so that the operator can distinguish them more intuitively.

[0112] In some embodiments, as shown in Figures 7-10, the arc lock mechanism includes an arc lock base 31 and a pin lock assembly 32. The pin lock assembly 32 is located on one side of the arc lock base 31, and the second lock rod assembly 39 cooperates with the pin lock assembly 32 to lock.

[0113] The arc lock mechanism provided in this embodiment also includes an arc lock slider 33, a fixing block 36, and an angle adjustment assembly. The arc lock base 31 has a first circumferentially extending groove 3111, and the arc lock slider 33 slides within the first groove 3111. Both ends of the first groove 3111 penetrate the side walls of the arc lock base 31. A pin lock assembly 32 is provided on one side of the arc lock slider 33, allowing the arc lock slider 33 to slide within the first groove 3111, thereby driving the pin lock assembly 32 to slide and change the angle of the pin lock assembly 32, thus changing the splicing angle of the two displays. The arc lock slider 33 has a first mounting hole 331 with its center line extending radially, and the fixing block 36 is retractably disposed within the first mounting hole 331. The angle adjustment assembly includes an angle adjustment knob 34 and a connecting rod 35. The connecting rod 35 is located at the end of the angle adjustment knob 34 near the arc lock seat 31. The connecting rod 35 passes through the fixing block 36 and is rotatably connected to the arc lock slider 33. The mating end face of the fixing block 36 and the angle adjustment knob 34 is provided with an angle locking position and an angle unlocking position. Rotating the angle adjustment knob 34 allows it to selectively engage with either the angle locking position or the angle unlocking position, and the fixing block 36 can be fixed or released from the arc lock seat 31. When the angle adjustment knob 34 engages with the angle locking position on the fixing block 36, the fixing block 36 moves towards the arc lock slider 33 and retracts into the first mounting hole 331, thus fixing the fixing block 36 to the arc lock seat 31 and fixing the angle of the arc lock slider 33. When adjusting the angle, rotating the angle adjustment knob 34 engages with the angle unlocking position on the fixed pressure block 36. The fixed pressure block 36 extends out of the first mounting hole 331 and moves away from the arc lock slider 33, thereby releasing the fixed pressure block 36 from the arc lock seat 31. At this time, by rotating the angle adjustment knob 34, the arc lock slider 33 can be moved along the first slide groove 3111, thus adjusting the angle of the arc lock slider 33, and consequently adjusting the angle of the latch lock assembly 32, thereby adjusting the splicing angle of two adjacent box frames 1.

[0114] When adjusting the angle of the arc lock slider 33, the arc lock device 3 only needs to rotate the angle adjustment knob 34 to unlock the arc lock slider 33; then, the angle adjustment knob 34 drives the arc lock slider 33 to move along the first slide groove 3111 to adjust the angle; after the angle is adjusted, rotate the angle adjustment knob 34 in the opposite direction to fix the fixing block 36 to the arc lock seat 31, thereby fixing the angle of the arc lock slider 33; the operation is simple and the angle adjustment efficiency is improved.

[0115] As shown in Figure 11, the fixed pressure block 36 includes a pressure head 361 and a first sleeve 362. The first sleeve 362 is located at one end of the pressure head 361 near the arc lock slider 33, and the outer diameter of the first sleeve 362 is smaller than the outer diameter of the pressure head 361. The first sleeve 362 is provided with a through hole 3621 that passes through the pressure head 361. The top of the arc lock seat 31 is provided with a first clearance groove 3121 that extends along the extension direction of the first slide groove 3111. The pressure head 361 is located between the angle adjustment knob 34 and the arc lock seat 31. The first sleeve 362 enters the first mounting hole 331 through the first clearance groove 3121. The connecting rod 35 passes through the through hole 3621 and enters the first mounting hole 331 to be rotatably connected to the arc lock slider 33. The structure utilizes the rotation of the angle adjustment knob 34 to both fix the arc lock slider 33 to the arc lock seat 31 using the fixing block 36, and to release the arc lock slider 33 from the arc lock seat 31 using the fixing block 36. This eliminates the need to remove and install screws when adjusting the angle, thus improving the efficiency of angle adjustment.

[0116] For example, the first sleeve 362 is telescopically disposed within the first mounting hole 331 via a first spring 37; the first mounting hole 331 is configured as a stepped hole, the first spring 37 is sleeved on the outer periphery of the connecting rod 35, and the first end of the first spring 37 abuts against the end of the first sleeve 362 away from the pressure head 361, and the second end of the first spring 37 abuts against the stepped surface of the stepped hole. When the fixed pressure block 36 is subjected to pressure from the angle adjustment knob 34, the first spring 37 is compressed, and the pressure head 361 moves toward the arc lock seat 31 and is fixed to the top of the arc lock seat 31. When the force exerted by the angle adjustment knob 34 on the fixed pressure block 36 is released, under the elastic force of the first spring 37, the pressure head 361 moves away from the arc lock seat 31 and is released from fixation to the top of the arc lock seat 31.

[0117] A stepped hole is provided through the arc lock slider 33. The end of the connecting rod 35 away from the angle adjustment knob 34 is provided with a threaded hole 351. The limiting screw 38 extends into the small hole of the stepped hole and is screwed into the threaded hole 351. The connecting rod 35 can rotate relative to the small hole of the stepped hole. The limiting head 21311 of the limiting screw 38 is located at the outer end of the small hole of the stepped hole, which is set to limit the axial movement of the angle adjustment component along the first mounting hole 331, thereby realizing the rotational connection between the angle adjustment component and the arc lock slider 33.

[0118] In other embodiments, a bearing may be installed in the small hole of the stepped hole, and the connecting rod 35 is interference-fitted with the inner hole of the bearing, so that the connecting rod 35 can rotate relative to the first mounting hole 331.

[0119] Along the extension direction of the first clearance groove 3121, first pressing teeth 3122 are provided on both sides of the outer side of the first clearance groove 3121. A second pressing tooth 3611 is provided at the end of the pressing head 361 near the first sleeve 362. The first pressing teeth 3122 and the second pressing teeth 3611 cooperate to fix the fixing block 36 to the arc lock seat 31. When the fixing block 36 is subjected to the force of the angle adjustment knob 34, and the first sleeve 362 retracts to the first mounting hole 331, the second pressing tooth 3611 on the pressing head 361 can cooperate with the corresponding first pressing tooth 3122 to lock and fix it. When the force on the fixing block 36 is released, under the elastic force of the first spring 37, the pressing head 361 moves away from the arc lock slider 33, thereby causing the second pressing tooth 3611 to disengage from the first pressing tooth 3122. It should be noted that the number of first pressing teeth 3122 is far greater than the number of second pressing teeth 3611. The second pressing teeth 3611 cooperate with the corresponding number of first pressing teeth 3122 to ensure the stability of the fixation. When the angle adjustment knob 34 moves the arc lock slider 33 to adjust the angle, the second pressing teeth 3611 cooperate with another part of the first pressing teeth 3122.

[0120] In other embodiments, the fixing block 36 and the arc lock seat 31 can also be fixed by means of slots and blocks.

[0121] In some embodiments, the arc lock slider 33 is further provided with a second positioning bead 332. The second positioning bead 332 is located on both sides of the first mounting hole 331, along the extending direction of the first clearance groove 3121. Multiple slider positioning holes 3123 are spaced apart on both sides of the interior of the first clearance groove 3121. The second positioning bead 332 can selectively engage with one of the slider positioning holes 3123. After the arc lock slider 33 moves to a specified angle, the second positioning bead 332 engages with the slider positioning hole 3123 at the corresponding angle position to achieve precise positioning and ensure angle adjustment accuracy.

[0122] As shown in Figures 12 and 13, the arc lock base 31 includes a third base 311 and a top cover 312. The third base 311 and the top cover 312 are detachably connected by a first screw 47. A first sliding groove 3111 is provided in the third base 3111. After the arc lock slider 33 is placed in the first sliding groove 3111, the top cover 312 is connected to the third base 311 by the first screw 47, which facilitates the installation of the arc lock slider 33. A first clearance groove 3121 is provided in the top cover 312, a first pressing tooth 3122 is provided on the outer wall of the top cover 312, and a slider positioning hole 3123 is provided on the inner wall of the top cover 312.

[0123] As shown in Figure 14, the angle adjustment component provided in this embodiment includes a first locking plane 3612 for the angle locking position and a first unlocking plane 3613 for the angle unlocking position. The height of the first unlocking plane 3613 is lower than that of the first locking plane 3612, and there are two first locking planes 3612. The first unlocking plane 3613 is located between the two first locking planes 3612. Since the angle adjustment component and the arc lock slider 33 are fixed in axial position, that is, the angle adjustment knob 34 will not move towards or away from the arc lock slider 33, when the angle adjustment knob 34 is rotated to abut against the first locking plane 3612, the pressure head 361 moves towards the upper cover 312, compressing the first spring 37, and the second pressing tooth 3611 on the pressure head 361 can cooperate and fix with the first pressing tooth 3122 at the corresponding position on the upper cover 312, thereby fixing the angle of the arc lock slider 33. When the angle adjustment knob 34 is rotated to the first unlocking plane 3613, the height of the first unlocking plane 3613 is lower than that of the first locking plane 3612. Under the elastic restoring force of the first spring 37, the pressure head 361 will move towards the angle adjustment knob 34 until the angle adjustment knob 34 abuts against the first unlocking plane 3613. Rotating the angle adjustment knob 34 120° from the first locking plane 3612 to the first unlocking plane 3613 places the higher first locking plane 3612 on both sides of the first unlocking plane 3613, without affecting the contact between the angle adjustment knob 34 and the lower first unlocking plane 3613.

[0124] In some embodiments, a limiting block 3614 is provided at one end of each first locking plane 3612, and the limiting blocks 3614 of the two first locking planes 3612 are arranged diagonally. The limiting blocks 3614 are configured to limit the rotation angle of the angle adjustment knob 34, ensuring the stability of the angle of the arc lock slider 33 when the angle is fixed. The positions of the two limiting blocks 3614 are set according to the rotation direction of the angle adjustment knob 34. Since the first unlocking plane 3613 is located between the two first locking planes 3612, and the height of the two first locking planes 3612 is higher than that of the first unlocking plane 3613, no limiting structure is required on the first unlocking plane 3613, and the first locking planes 3612 on both sides can limit the angle adjustment knob 34 located on the first locking plane 3612.

[0125] In some embodiments, a transition slope 3615 is provided between the first locking plane 3612 and the first unlocking plane 3613, and the two transition slopes 3615 are arranged diagonally on the first unlocking plane 3613. The provision of the transition slope 3615 makes the angle adjustment knob 34 more smooth and stable during the rotation of the first locking plane 3612 and the first unlocking plane 3613.

[0126] To ensure the accuracy of the rotation position of the angle adjustment knob 34, a first positioning bead 341 is provided on the mating surface between the angle adjustment knob 34 and the fixed pressure block 36. The first locking plane 3612 is also provided with a locking positioning hole 36121, and the first unlocking plane 3613 is also provided with an unlocking positioning hole 36131. ​​The first positioning bead 341 can engage with either the locking positioning hole 36121 or the unlocking positioning hole 36131. ​​When the angle adjustment knob 34 rotates from the first locking plane 3612 to the first unlocking plane 3613, when the first positioning bead 341 slides into the unlocking positioning hole 36131, it indicates that the angle adjustment knob 34 has rotated to the correct position, ensuring the accuracy of the unlocking position of the angle adjustment knob 34 and avoiding affecting the angle adjustment of the arc lock slider 33. When the angle adjustment knob 34 rotates from the first unlocking plane 3613 to the first locking plane 3612, and the first positioning bead 341 slides into the locking positioning hole 36121, it indicates that the angle adjustment knob 34 has been rotated to the correct position, ensuring the accuracy of the locking position of the angle adjustment knob 34 and guaranteeing the accuracy of the angle of the arc lock slider 33.

[0127] The first positioning bead 341 and the second positioning bead 332, also called ball-head plungers or spring plungers, are load devices composed of a housing, spring, ball or column.

[0128] As shown in Figures 10, 15, and 19, the bolt lock assembly 32 includes a bolt lock piece 321 with a second lock hole 3211. The second lock rod assembly 39 includes a lock rod mounting plate 392 and a second lock rod 391. The second lock rod 391 is located at the center of the lock rod mounting plate 392, and both ends of the second lock rod 391 extend out of the lock rod mounting plate 392. The first end of the second lock rod 391 can engage with the second lock hole 3211 for locking, and the second end of the second lock rod 391 is provided with a locking handle 393. By rotating the second lock rod 391 through the locking handle 393, the second lock rod 391 can engage with the second lock hole 3211 for locking. A second sliding groove 333 extending radially is provided on one side of the arc-shaped lock slider 33. The bolt lock piece 321 is telescopically disposed within the second sliding groove 333, so that the bolt lock piece 321 can extend and retract radially along the arc-shaped lock slider 33.

[0129] For example, the bolt lock assembly 32 also includes a second spring 324. The bolt lock piece 321 is L-shaped, with the long arm of the L-shape extending into the second slide groove 333 and the short arm located outside the second slide groove 333, forming a handle 3212 of the bolt lock piece 321. The second spring 324 is located between the bottom of the second slide groove 333 and the long arm of the L-shape. The second lock hole 3211 includes a first through hole 32111 and a locking hole 32112 that are interconnected. The diameter of the locking hole 32112 is smaller than the diameter of the first through hole 32111, and the locking hole 32112 is located close to the center of the arc-shaped lock slider 33. When the second locking rod 391 is inserted into the first through hole 32111, the bolt lock piece 321 is locked into the locking hole 32112 under the elastic force of the second spring 324, which is the locked state. When unlocking, press down on the handle 3212 to compress the second spring 324, and the second locking rod 391 disengages from the locking hole 32112, thereby unlocking.

[0130] In this embodiment, one end of the arc-shaped lock slider 33 is provided with an extension 334 extending towards the center, and the inner side and top of the extension 334 are provided as openings. The pin lock assembly 32 also includes a lock plate side plate 322 and a lock plate cover plate 323. The lock plate side plate 322 is L-shaped, and the outer side wall of the L-shaped lock plate side plate 322 and the extension 334 form a second sliding groove 333. The lock plate cover plate 323 covers the top of the second sliding groove 333. The width of the long arm of the L-shaped pin lock plate 321 near the short arm is smaller. The lock plate cover plate 323 is provided with a clearance elongated hole that matches the width of the long arm of the L-shaped pin lock plate 321 near the short arm. The long arm of the L-shaped lock plate side plate 322 and the outer side wall of the extension 334 are arranged opposite to each other, and both are provided with clearance holes 3341 for clearance of the second lock rod 391. This design facilitates the installation of the latch locking plate 321 and the second spring 324.

[0131] As shown in Figure 16, to ensure the accuracy of angle adjustment, angle scale lines 3124 are provided on both sides of the first clearance groove 3121, and alignment blocks 3616 are provided on opposite sides of the pressure head 361. The alignment blocks 3616 are provided with sharp points. When the angle adjustment knob 34 abuts against the first unlocking plane 3613 and the arc lock slider 33 is unlocked, the angle adjustment knob 34 drives the arc lock slider 33 to move within the first slide groove 3111. When the sharp point of the alignment block 3616 aligns with the specified angle on the angle scale line 3124, the movement stops. Then, the angle adjustment knob 34 is rotated so that the angle adjustment knob 34 abuts against the first locking plane 3612, thus completing the angle adjustment of the bolt lock assembly 32.

[0132] For example, as shown in Figure 8, the locking angle of the arc lock device 3 is 0°, meaning the splicing angle between two adjacent displays connected by the arc lock device 3 is 0°, which is a horizontal splicing. As shown in Figure 17, the locking angle of the arc lock device 3 is -10°, meaning the splicing angle between two adjacent displays connected by the arc lock device 3 is -10°; as shown in Figure 18, the locking angle of the arc lock device 3 is 15°, meaning the splicing angle between two adjacent displays connected by the arc lock device 3 is 15°.

[0133] As shown in Figure 19, by way of example, mounting brackets 12 are provided on opposite sides of the box frame 1, the arc lock seat 31 of the arc lock mechanism is fixed on the mounting bracket 12 on one side, and the locking rod mounting plate 392 of the second locking rod assembly 39 is connected to the mounting bracket 12 on the other side.

[0134] In two adjacent box frames 1, the arc-shaped locking mechanism of one is connected to the second locking rod assembly 39 of the other to lock the two box frames 1 together. At the same time, the arc-shaped locking device 3 can also adjust the splicing angle of the two box frames 1, and it is easy to operate, improving the efficiency of angle adjustment.

[0135] In some embodiments, as shown in Figures 20-22, the display screen further includes a display module 4, which is disposed on the front side of the housing frame 1. The display module 4 includes an LED light panel 42 and a first bottom shell 41. The LED light panel 42 is disposed on the front side of the first bottom shell 41, and LED beads are arranged on the LED light panel 42.

[0136] To protect the LED beads at the edge of the LED light panel 42 from detachment or damage due to minor impacts or external forces, thus affecting product quality, as shown in Figure 21, this embodiment also provides a cabinet frame 1 for the aforementioned display screen. The cabinet frame 1 includes a frame body 13 and a protective mechanism 14. The protective mechanism 14 is located at both ends of the frame body 13 along a first direction, thereby protecting the LED beads at the edge of the LED light panel 42. The protective mechanism 14 is retractably mounted on the frame body 13. When the display screens are stacked and spliced, the protective mechanisms 14 on adjacent frame bodies 13 abut against each other, allowing the two protective mechanisms 14 to automatically retract to be flush with the ends of the frame bodies 13, without affecting the splicing of the display screens. When the display screen is placed alone, the protective mechanism 14 automatically extends to the front of the display module 4 to protect the LED beads at the edge of the LED light panel 42.

[0137] The protection mechanism 14 includes a protection plate 141, a connecting frame 142 and a first elastic element 143. The protection plate 141 extends along the length of the end of the frame body 13 to achieve full coverage of the edge LED beads of the display module 4. As shown in Figures 21-25, the connecting frame 142 is located on one side of the protective plate 141. The frame body 13 is provided with a receiving cavity 131. The first elastic member 143 is located in the receiving cavity 131 and is connected to the connecting frame 142. The extension and retraction direction of the first elastic member 143 is set at a preset angle with the protective plate 141, so that the elastic driving force of the first elastic member 143 on the protective plate 141 is in the inclined direction. When the first elastic member 143 extends and drives the connecting frame 142 to extend out of the receiving cavity 131, the protective plate 141 moves forward and moves away from the frame body 13. When the connecting frame 142 is retracted by the force and compresses the first elastic member 143 in the receiving cavity 131, the protective plate 141 moves backward and moves closer to the frame body 13. This achieves effective protection of the display module 4 when the protective plate 141 extends and can be stored at the end of the frame body 13 when retracted, without affecting the stacking and splicing of the cabinet frame 1. When subjected to force, the connecting frame 142 retracts into the receiving cavity 131 and compresses the first elastic element 143; the first elastic element 143 drives the connecting frame 142 to extend out of the receiving cavity 131, so that the connecting frame 142 drives the protective plate 141 to extend to the front of the display module 4. When the cabinet frames 1 are stacked, the protective mechanisms 14 of two adjacent cabinet frames 1 abut against each other, realizing the automatic retraction of the connecting frame 142 and the protective plate 141; when two adjacent cabinet frames 1 are separated, the connecting frame 142 is tilted out under the action of the elastic restoring force of the first elastic element 143, realizing the automatic extension of the protective plate 141 to protect the display module 4; no manual operation by the installer is required, improving installation efficiency.

[0138] The receiving cavity 131 is located on the rear side of the frame body 13, which makes the frame body 13 compatible with the base function of the protection mechanism 14, reducing accessories and lowering costs; at the same time, it makes the connection of the protection plate 141 more stable and reliable.

[0139] In some embodiments, the end of the first bottom shell 41 is provided with a receiving groove 411, and the protective plate 141 can retract into the receiving groove 411. In order to ensure that the protective plate 141 can be flush with the end of the display screen when it retracts, a receiving groove 411 is provided at the end of the first bottom shell 41. When the protective mechanisms 14 abut against each other, the connecting frame 142 compresses the first elastic member 143 and retracts into the receiving cavity 131. The protective plate 141 retracts to the rear side and moves downward into the receiving groove 411, so as not to affect the splicing of adjacent cabinet frames 1.

[0140] For example, two connecting brackets 142 are provided, and the two connecting brackets 142 are located at both ends on the same side of the protective plate 141. The protective plate 141 is connected by the two connecting brackets 142 to ensure the stability of the protective plate 141 when it is driven to extend and retract.

[0141] In some embodiments, the bottom surface of the receiving cavity 131 is an inclined surface 1311, the inclined surface 1311 forms a preset angle with the protective plate 141, the bottom surface of the connecting frame 142 is parallel to the inclined surface 1311; and the inclined surface 1311 is provided with a first groove 13111, the bottom surface of the first groove 13111 is parallel to the inclined surface 1311, the first elastic member 143 is provided in the first groove 13111, the bottom surface of the connecting frame 142 is provided with a second connecting post 1421, and the second connecting post 1421 is inserted into the first elastic member 143 in a direction perpendicular to the inclined surface 1311. The first elastic element 143 is a spring, and the second connecting post 1421 is inserted between the spirals of the spring. When the connecting frame 142 is subjected to a resisting force, the connecting frame 142 drives the second connecting post 1421 to compress the spring, and the connecting frame 142 retracts into the receiving cavity 131. After the resisting force on the connecting frame 142 is removed, under the action of the elastic restoring force of the spring, the second connecting post 1421 drives the connecting frame 142 to extend out of the receiving cavity 131, thereby driving the protective plate 141 to move away from the receiving groove 411 to the front side of the display module 4.

[0142] For example, the preset included angle is 45°, the longitudinal section of the connecting frame 142 is an isosceles triangle, and the first elastic member 143 is connected to the hypotenuse of the isosceles triangle, so that the force exerted by the first elastic member 143 on the connecting frame 142 is inclined upward. In other embodiments, the preset angle can also be 30° or 60°. The preset angle can be designed according to the moving distance of the protective plate 141.

[0143] In some embodiments, the connecting frame 142 is provided with a guide groove 1422 whose centerline is parallel to the inclined surface 1311. A guide member is provided in the receiving cavity 131, and the guide member cooperates with the guide groove 1422 to guide the movement of the protective plate 141. When the guide member abuts against the first end of the guide groove 1422, the protective plate 141 extends to the first limit position; when the guide member abuts against the second end of the guide groove 1422, the protective plate 141 retracts to the second limit position. By providing the guide member, the limit positions of the connecting frame 142 during extension and retraction are limited, so as to ensure that the protective plate 141 extends to the front side of the display module 4 at the limit position and retracts into the receiving groove 411 at the limit position. The guide groove 1422 is provided on the side plate of the connecting frame 142.

[0144] In some embodiments, two guide members are provided at intervals, one of which abuts against the first end of the guide groove 1422, and the other guide member abuts against the second end of the guide groove 1422. The two guide members respectively limit the first limit position of the connecting frame 142 when it extends and the second limit position when it retracts, while providing guidance for the movement of the connecting frame 142, so that the connecting frame 142 moves smoothly along the inclined surface 1311 during movement without deflection.

[0145] In some embodiments, both adjacent sides of the receiving cavity 131 are provided with openings, one side of which is the telescopic inlet of the connecting frame 142, and the other side of which is the installation inlet of the connecting frame 142. The installation inlet is closed by a baffle 133. After passing through the guide groove 1422, one end of the guide member is connected to the baffle 133, and the other end is connected to the side wall of the receiving cavity 131 opposite to the baffle 133. The receiving cavity 131 is directly opened on the frame body 13, compatible with the fixing function of the protection mechanism 14. In order to facilitate the installation and telescopic movement of the connecting frame 142, the adjacent sides of the receiving cavity 131 are provided with openings. During installation, the connecting frame 142 enters the receiving cavity 131 from the installation inlet. The baffle 133 is provided with a second connecting hole 1331 in the circumferential direction. The fixing screw 135 passes through the second connecting hole 1331 and is fixedly connected to the installation inlet of the receiving cavity 131 in the circumferential direction. The guide is set as a guide screw 132. The baffle 133 is provided with a second through hole 1332. The guide screw 132 passes through the second through hole 1332 and the guide groove 1422 and is screwed to the side wall of the receiving cavity 131 opposite to the baffle 133. The head of the guide screw 132 is engaged with the baffle 133.

[0146] After the protective plate 141 extends out from the front of the display module 4, to prevent accidental contact by installers that would cause the protective plate 141 to retract and thus fail to effectively protect the LED beads, the protection mechanism 14 also includes a second limiting component 144. The second limiting component 144 is telescopically mounted on the frame body 13. The protective plate 141 is provided with a second limiting hole 1411. The second limiting component 144 is configured to engage with the second limiting hole 1411 to fix the protective plate 141 when it extends to the front of the display module 4. The second limiting component 144 is telescopically mounted. It only extends to engage with the second limiting hole 1411 when the protective plate 141 extends to the front of the display module 4 to fix the protective plate 141 and prevent accidental contact that would cause the protective plate 141 to retract. When the protective plate 141 retracts into the receiving groove 411, the second limiting component 144 retracts without affecting the rearward movement of the protective plate 141.

[0147] In some embodiments, the frame body 13 is provided with a second mounting hole 134 whose center line is perpendicular to the protective plate 141, and a second limiting component 144 is disposed in the second mounting hole 134. The second limiting component 144 includes a second limiting post 1441 and a second limiting spring 1442. The second limiting post 1441 includes a limiting end and a second column 14411. The outer diameter of the limiting end is larger than the outer diameter of the second column 14411. The second limiting spring 1442 is sleeved on the outside of the second column 14411. The first end of the second limiting spring 1442 is connected to the second mounting hole 134, and the second end of the second limiting spring 1442 abuts against the limiting end. The end of the limiting end away from the second column 14411 can abut against the second limiting hole 1411. When the protective mechanisms 14 on two adjacent box frames 1 abut against each other, the second limiting post 1441 is subjected to the abutment pressure and can retract into the second mounting hole 134 and disengage from the second limiting hole 1411; when the external force on the second limiting post 1441 is removed, that is, after the two adjacent box frames 1 separate, under the action of the elastic restoring force of the second limiting spring 1442, it extends out of the second mounting hole 134 and cooperates with the second limiting hole 1411 to fix the protective plate 141.

[0148] The second mounting hole 134 is configured as a stepped hole, which includes a first hole, a second hole and a third hole with successively increasing diameters. The second limiting spring 1442 is disposed in the second hole. The first end of the second limiting spring 1442 abuts against the connection between the second hole and the first hole, and the second end of the second limiting spring 1442 abuts against the limiting end, so that the limiting end slides in the third hole.

[0149] In some embodiments, the limiting end includes a limiting part 14412 and a pressing part 14413. The limiting part 14412 is disposed between the second post 14411 and the pressing part 14413, and the outer diameter of the limiting part 14412 is larger than the outer diameter of the pressing part 14413. The limiting part 14412 can abut against the second limiting hole 1411. By pressing the second limiting post 1441 with the pressing part 14413, the limiting part 14412 can disengage from the second limiting hole 1411. The protective plate 141 is also provided with a second clearance groove 1412, which extends along the moving direction of the protective plate 141. When the housing frame 1 is stacked, the two pressing parts 14413 abut against each other, causing the second limiting post 1441 to retract into the second mounting hole 134. Furthermore, by providing the second clearance groove 1412, during the retraction of the protective plate 141 along with the connecting frame 142, the pressing part 14413 remains within the second clearance groove 1412, preventing the protective plate 141 from retracting. The second limiting hole 1411 is located on the side of the second clearance groove 1412 closest to the second mounting hole 134, and is also located on the side of the second clearance groove 1412 closest to the connecting frame 142. When the protective plate 141 extends to the first limit position on the front side of the display module 4, the stepped surface between the limiting part 14412 and the pressing part 14413 abuts against the bottom of the second limiting hole 1411 to fix the protective plate 141, preventing it from retracting when accidentally touched by an installer.

[0150] In some embodiments, as shown in Figures 26-29, the housing frame 1 of this embodiment has a frame structure, which is provided with multiple display module mounting positions. Each display module mounting position is equipped with a display module 4, which is suitable for large outdoor displays.

[0151] Multiple magnets 15 are arranged circumferentially on the front side of the display module mounting position. Correspondingly, multiple iron pieces 414 magnetically connected to the magnets 15 are arranged circumferentially on the display module 4 so as to magnetically connect the display module 4 to the display module mounting position.

[0152] To prevent the display module 4 from accidentally falling due to the loss of magnetism of magnet 15, the display module mounting position is also provided with a snap-fit ​​position 16, which is designed to snap into the display module 4 to achieve a mechanical connection, so as to avoid the display module 4 from accidentally falling.

[0153] As shown in Figures 30-32, this embodiment provides a display module 4 applied to the aforementioned display screen. The display module 4 also includes a rear cover 44 and a locking device 45. An LED light panel 42 is mounted on the front side of the first bottom shell 41, and a maintenance hole 43 is provided through the LED light panel 42 and the first bottom shell 41. The rear cover 44 is connected to the rear side of the first bottom shell 41, and the area of ​​the rear cover 44 is smaller than the area of ​​the first bottom shell 41. It is fixed to the center of the first bottom shell 41 by a first screw 47. An iron sheet 414 for magnetic connection with the magnet 15 of the housing frame 1 is provided circumferentially on the first bottom shell 41. The locking device 45 is located between the first bottom shell 41 and the rear cover 44. The locking device 45 engages with the snap-fit ​​position 16 on the housing frame 1 to achieve a mechanical connection between the display module 4 and the housing frame 1, preventing the display module 4 from accidentally falling off.

[0154] The locking device 45 includes a disassembly shaft 451, a first locking member 452, and a second locking member 453. The disassembly shaft 451 is equipped with a transmission part and a maintenance part 4512. The ends of the first locking member 452 and the second locking member 453 that are close to each other engage with the transmission part. When the disassembly shaft 451 rotates, the transmission part drives the first locking member 452 and the second locking member 453 to move closer to or further away from each other. The ends of the first locking member 452 and the second locking member 453 that are further away from each other are each provided with a locking portion. The rear cover 44 is provided with a clearance opening corresponding to the locking portion. When the first locking member 452 and the second locking member 453 move further away from each other, the locking portions of the ends of the first locking member 452 and the second locking member 453 that are further away from each other can pass through the clearance opening on the rear cover 44 and engage with the locking position 16 on the housing frame 1, thereby locking the display module 4 to the housing frame 1. When the first locking member 452 and the second locking member 453 move toward each other, the locking part disengages from the locking position 16, thereby unlocking the display module 4 from the housing frame 1.

[0155] Maintenance hole 43 is provided corresponding to maintenance part 4512. Maintenance pin 46 passes through maintenance hole 43 and applies force to maintenance part 4512, causing disassembly shaft 451 to rotate. This drives first locking member 452 and second locking member 453 to move closer to or further away from each other, achieving quick unlocking and locking. Maintenance pin 46 only needs to apply force perpendicular to LED light panel 42 to maintenance part 4512, without applying torque. Therefore, the diameter of maintenance hole 43 does not need to be too large, making it suitable for display modules 4 with smaller pixel pitch. This display module 4 enables front maintenance of display modules with smaller pixel pitch, improving the disassembly and assembly efficiency of the display screen.

[0156] In some embodiments, the transmission unit includes a gear structure 4511 disposed on the outer periphery of the mounting / removing shaft 451. A first rack structure 4522 is disposed at one end of the first locking member 452 near the second locking member 453, and a second rack structure 4532 is disposed at one end of the second locking member 453 near the first locking member 452. The first rack structure 4522 is located on the side of the gear structure 4511 near the rear cover 44 and meshes with the gear structure 4511. The second rack structure 4532 is located on the side of the gear structure 4511 near the first bottom shell 41 and meshes with the gear structure 4511. When the disassembly / removal shaft 451 rotates, the gear structure 4511 rotates as well. Since the first rack structure 4522 is located behind the gear structure 4511 and the second rack structure 4532 is located in front of the gear structure 4511, when the gear structure 4511 rotates in the same direction, the first rack structure 4522 and the second rack structure 4532 move in opposite directions. This causes the first locking member 452 and the second locking member 453 to move away from or towards each other, thereby achieving the engagement or disengagement of the locking part with the locking position 16, thus locking or unlocking the display module 4 and the housing frame 1. This locking device 45 only requires rotating the disassembly / removal shaft 451 to lock or unlock the display module 4, making operation convenient and improving the efficiency of disassembly / removal of the display module 4.

[0157] In other embodiments, the transmission unit may also be configured as two coil springs extending in opposite directions and wound around the disassembly / removal shaft 451. One of the coil springs has its other end connected to the first locking member 452, and the other coil spring has its other end connected to the second locking member 453. Rotating the disassembly / removal shaft 451 can also move the first locking member 452 and the second locking member 453 towards or away from each other. Alternatively, the movement of the first locking member 452 and the second locking member 453 towards or away from each other can be achieved through a structure such as gear transmission, cam transmission, or linkage transmission.

[0158] In some embodiments, two gear structures 4511, two first rack structures 4522, and two second rack structures 4532 are provided in a one-to-one correspondence. The maintenance part 4512 is located between the two gear structures 4511. This can ensure the stability of the first locking member 452 and the second locking member 453 when they move, and ensure that the locking part can smoothly engage or disengage from the locking position 16.

[0159] In some embodiments, the locking device 45 further includes a second operating handle 454, the open end of which is connected to the disassembly / removal shaft 451, and both gear structures 4511 are located outside the open end of the second operating handle 454. By rotating the second operating handle 454, the disassembly / removal shaft 451 is rotated, making it easier for the operator to apply force manually. This allows the operator to disassemble and install the display module 4 from the rear side, meaning that the display module 4 can be maintained from both the front and rear.

[0160] In some embodiments, a third clearance groove 443 is provided on the rear cover 44 corresponding to the second operating handle 454. With this arrangement, when maintaining the display module 4, the operator can hold the second operating handle 454 and rotate the disassembly shaft 451 from the rear side without removing the rear cover 44, thereby improving disassembly and assembly efficiency.

[0161] The shape of the third clearance groove 443 is adapted to the shape of the second operating handle 454, and is a U-shaped groove. On each side of the bottom of the U-shaped groove, there is a second groove 444 with the same depth as the third clearance groove 443 and connected to the bottom of the third clearance groove 443, so that when the operator picks up the second operating handle 454, his / her hand can be placed in the two second grooves 444 to pick up the second operating handle 454.

[0162] For example, the latching portion includes a first latching portion 4521 and a second latching portion 4531. The first latching portion 4521 is disposed on the first locking member 452, and the second latching portion 4531 is disposed on the second locking member 453. The clearance opening includes a first clearance opening 441 and a second clearance opening 442. The first clearance opening 441 and the second clearance opening 442 are respectively disposed at opposite ends of the rear cover 44. The first latching portion 4521 extends out of the rear cover 44 through the first clearance opening 441 and latches with the latching position 16 on one side of the housing frame 1. The second latching portion 4531 extends out of the rear cover 44 through the second clearance opening 442 and latches with the latching position 16 on the other side of the housing frame 1.

[0163] The first locking member 452 includes 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 the first rack structure 4522 is located at the end of the first base plate away from the first locking frame. The first locking frame has a certain height, and the first engaging portion 4521 extends outward from the end of the first locking frame away from the first rack structure 4522 and is located on the side of the first locking frame away from the first base plate.

[0164] The second locking member 453 includes 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 the second rack structure 4532 is located at 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 4531 extends outward from the end of the second locking frame away from the second rack structure 4532, and is located on the side of the second locking frame away from the second base plate.

[0165] During assembly, the first locking member 452 and the second locking member 453 are positioned opposite each other, with the first base plate located behind the disassembly shaft 451 and the second base plate located in front of the disassembly shaft 451. This allows the two gear structures 4511 on the disassembly shaft 451 located outside the second operating handle 454 to engage with the first rack structure 4522 and the second rack structure 4532 without obstructing the maintenance part 4512 located between the two gear structures 4511. The first locking frame and the second locking frame are located on opposite sides of the disassembly shaft 451. To ensure the stability of the first locking member 452 and the second locking member 453 during movement and to prevent skew at both ends, the side of the first locking frame away from the first base plate abuts against the first bottom shell 41, and the side of the second locking frame away from the second base plate abuts against the rear cover 44.

[0166] In some embodiments, two first support blocks 413 are spaced apart on the first bottom shell 41 along the extending direction of the disassembly shaft 451, and a first support groove 4131 is provided on the side of the first support block 413 away from the first bottom shell 41. Two second support blocks are spaced apart on the rear cover 44 along the extending direction of the disassembly shaft 451, and a second support groove is provided on the side of the second support block away from the rear cover 44. The first support groove 4131 and the second support groove are joined to form a support hole, and the disassembly shaft 451 is supported in the two support holes. The maintenance part 4512 is located between the two support holes. Since the outer diameter of the maintenance part 4512 is larger than the outer diameter of the disassembly shaft 451, the support hole is formed by the joining of the first support groove 4131 and the second support groove, which facilitates the installation of the disassembly shaft 451. When the second operating handle 454 drives the disassembly shaft 451 to rotate, the disassembly shaft 451 rotates relative to the support hole, thereby achieving support for the disassembly shaft 451 without affecting the rotation of the disassembly shaft 451 under the drive of the second operating handle 454.

[0167] In some embodiments, as shown in Figures 31-35, the disassembly shaft 451 is further provided with two second limiting rings 4513. The two second limiting rings 4513 are respectively provided on both sides of the maintenance part 4512, and the side of the two second limiting rings 4513 that are far apart from each other abuts against the side of the two support holes that are close to each other, so as to restrict the disassembly shaft 451 from moving axially when rotating, thereby preventing the maintenance part 4512 from being misaligned with the maintenance hole 43, so that the maintenance pin 46 cannot apply force to the maintenance part 4512 through the maintenance hole 43 to make the disassembly shaft 451 rotate.

[0168] In some embodiments, referring to Figures 33-35, the maintenance hole 43 includes an unlocking hole 431 and a locking hole 432, which are spaced apart. The maintenance part 4512 includes a second unlocking plane 45121 and a second locking plane 45122, which are spaced apart by a preset angle along the circumferential direction of the disassembly / removal shaft 451. The unlocking hole 431 corresponds to the second unlocking plane 45121, and the locking hole 432 corresponds to the second locking plane 45122. Separating the unlocking hole 431 and the locking hole 432 facilitates the user's disassembly / removal operations. Since the rotation direction of the disassembly shaft 451 is opposite when unlocking and locking, if only one maintenance hole 43 is provided to achieve both unlocking and locking, the operator will need to identify the rotation direction of the disassembly shaft 451. However, since the disassembly shaft 451 is located on the rear side of the LED light panel 42, the rotation direction of the disassembly shaft 451 cannot be accurately identified through the maintenance hole 43 alone. This can lead to an incorrect rotation direction of the disassembly shaft 451, resulting in unlocking when locking. This increases the risk of the display module 4 falling accidentally, resulting in low safety.

[0169] After the maintenance pin 46 passes through the unlocking hole 431, it can abut against the second unlocking plane 45121 and apply a force perpendicular to the direction of the LED light panel 42 to the second unlocking plane 45121. The disassembly shaft 451 can rotate clockwise as shown in Figure 34, which drives the first locking member 452 and the second locking member 453 to move closer to each other, thereby causing the first latching part 4521 and the second latching part 4531 to disengage from the latching positions 16 on both sides of the cabinet frame 1, thereby unlocking the display module 4 from the cabinet frame 1.

[0170] After the maintenance pin 46 passes through the locking hole 432, it can abut against the second locking plane 45122. Similarly, a force perpendicular to the LED light board 42 is applied to the second locking plane 45122. The disassembly shaft 451 can rotate counterclockwise as shown in Figure 35, driving the first locking member 452 and the second locking member 453 to move away from each other. This causes the first latching part 4521 to extend out of the first clearance opening 441 and latch with the latching position 16 on one side of the cabinet frame 1. The second latching part 4531 extends out of the second clearance opening 442 and latches with the latching position 16 on the other side of the cabinet frame 1, thereby realizing the locking of the display module 4 and the cabinet frame 1.

[0171] In some embodiments, referring to Figures 31, 33-35, the maintenance unit 4512 further includes a connecting arc surface 45123 configured to connect the second unlocking plane 45121 and the second locking plane 45122. A first limiting groove 45124 is provided at one end of the connecting arc surface 45123 near the second unlocking plane 45121, and a second limiting groove 45125 is provided at the other end of the connecting arc surface 45123 near the second locking plane 45122. A limiting protrusion 412 is provided on one side of the first bottom shell 41 near the disassembly shaft 451. The limiting protrusion 412 is located between the unlocking hole 431 and the locking hole 432. When the limiting protrusion 412 slides into the first limiting groove 45124, the unlocking hole 431 corresponds to the second unlocking plane 45121; when the limiting protrusion 412 slides into the second limiting groove 45125, the locking hole 432 corresponds to the second locking plane 45122. By setting the first limiting groove 45124 and the second limiting groove 45125, the angle of rotation of the disassembly shaft 451 in the clockwise direction is limited when unlocking, and the angle of rotation of the disassembly shaft 451 in the counterclockwise direction is also limited when locking. This prevents the disassembly shaft 451 from rotating further after the first locking part 4521 and the second locking part 4531 are engaged or disengaged from the locking position 16. This prevents the first locking part 4521 and the second locking part 4531 from moving too far and being damaged by obstruction; or prevents the first rack structure 4522 and the second rack structure 4532 from disengaging from the gear structure 4511, resulting in transmission failure.

[0172] For example, the second unlocking plane 45121 and the second locking plane 45122 are spaced at a preset angle of 90° along the circumferential direction of the disassembly shaft 451. When unlocking, the disassembly shaft 451 rotates 90° clockwise to unlock the display module 4 from the housing frame 1; when locking, the disassembly shaft 451 rotates 90° counterclockwise to lock the display module 4 from the housing frame 1.

[0173] In some embodiments, the maintenance hole 43 includes a first hole 4301 and a second hole 4302 that are concentrically arranged and connected. The first hole 4301 is located on the LED light panel 42, and the second hole 4302 is located on the first bottom shell 41. The inner diameter of the first hole 4301 is equal to the outer diameter of the maintenance pin 46, and the inner diameter of the second hole 4302 is larger than the inner diameter of the first hole 4301. This arrangement allows for a smaller diameter of the first hole 4301. Furthermore, it prevents the maintenance pin 46 from having sufficient movement space within the second hole 4302 when the maintenance hole 43 is slightly misaligned with the maintenance part 4512 due to machining or installation errors. This allows the head of the maintenance pin 46 to slightly offset and still apply force to the maintenance part 4512 to drive the disassembly shaft 451 to rotate.

[0174] In some embodiments, a protrusion 415 abutting against the LED light panel 42 is provided on the side of the first bottom shell 41 near the LED light panel 42, and a second hole 4302 is provided on the protrusion 415. By providing a second hole 4302 on the protrusion 415, the depth of the second hole 4302 can be increased, protecting the maintenance pin 46 and preventing the maintenance pin 46 from breaking when force is applied to the maintenance part 4512.

[0175] The locking device 45 in the display module 4 engages with the locking position 16 on the housing frame 1, securing the display module 4 to the housing frame 1 and preventing it from accidentally falling. This display module 4 allows for both rear maintenance and front maintenance via the maintenance hole 43, and is suitable for front maintenance of display modules 4 with smaller pixel pitches, thus improving the efficiency of disassembly and maintenance of the display module 4.

[0176] In some embodiments, as shown in Figures 36-42, the control box locking device 5 has two locking members 53. One locking member 53 is connected to each side of the drive assembly 52, so that the two locking members 53 move synchronously. By providing two locking members 53, which engage with the housing frame 1 from different positions on both sides, the stability of the connection between the control box 51 and the housing frame 1 can be ensured, preventing gaps between the control box 51 and the housing frame 1 due to loosening at the engagement points.

[0177] Referring to Figure 41, in this embodiment, the third direction is the thickness direction of the control box 51; both clamping members 53 extend along the first direction and are arranged opposite to each other; the clamping members 53 are sheet-shaped; this embodiment describes one of the clamping members 53 as an example, and the structures and arrangements of the two clamping members 53 are the same.

[0178] Referring to Figures 36-39, the clamping member 53 has a snap-fit ​​end 533, and the housing frame 1 has a snap-fit ​​part 17. The snap-fit ​​end 533 engages with the snap-fit ​​part 17. The snap-fit ​​end 533 moves with the clamping member 53. When the snap-fit ​​end 533 moves to the position of the snap-fit ​​part 17, the snap-fit ​​end 533 engages with the snap-fit ​​part 17, thereby fixing the control box 51 to the housing frame 1. In this embodiment, both clamping members 53 have two snap-fit ​​ends 533, and the housing frame 1 has four snap-fit ​​parts 17. Optionally, both the snap-fit ​​end 533 and the snap-fit ​​part 17 are provided with guide slopes to ensure smooth engagement between the snap-fit ​​end 533 and the snap-fit ​​part 17.

[0179] In some embodiments, referring to Figures 43 and 44, the drive assembly 52 includes a main body 521 and a locking member 522. The main body 521 is rotatably connected to the control housing 51 and connected to the clamping member 53. The locking member 522 is rotatably disposed within the main body 521. The first end of the locking member 522 is connected to the main body 521 through a second elastic member 524, and the second end of the locking member 522 is engaged with the control housing 51. The second elastic member 524 can be a spring. By setting the main body 521 and setting the locking member 522 within the main body 521, the locking member 522 is rotatably connected to the main body 521. When the locking member 522 is rotated, the first end of the locking member 522 presses against the second elastic member 524 and the second end tilts up, thereby disengaging from the control housing 51, thus enabling the drive assembly 52 to reach the unlocked state. When the external force is lost, the locking member 522 can be reset under the action of the second elastic member 524. In this embodiment, the main body 521 is a handle, and a clamping member 53 is connected to each end of the handle; the locking member 522 is in the shape of a sheet; the second elastic member 524 is a spring, and the specifications of the spring can be: wire diameter 0.8 mm, outer diameter 6 mm, and length 12 mm.

[0180] In this embodiment, the control box 51 is provided with a hook 511. When the second end of the locking member 522 is engaged with the hook 511, the drive assembly 52 is in a locked state. The control box locking device 5 also includes a third connecting member 56, and the main body 521 is rotatably mounted on the control box 51 through the third connecting member 56. The third connecting member 56 can be an M5×25 flat-head Phillips screw. The control box locking device 5 also includes a rotating connecting member 526, and the locking member 522 is rotatably mounted on the control box 51 through the rotating connecting member 526. The rotating connecting member 526 can be an M4×12 Phillips screw.

[0181] To enable the locking member 53 to slide within the control box 51 when the main body 521 rotates, the control box locking device 5 further includes a first connecting member 54. The locking member 53 has a guide hole 531. The first end of the first connecting member 54 is rotatably connected to the main body 521, and the second end of the first connecting member 54 is slidably disposed within the guide hole 531. Rotation of the main body 521 enables the first connecting member 54 to slide within the guide hole 531. By providing the guide hole 531 and the first connecting member 54, the first connecting member 54 slides within the guide hole 531 when the main body 521 rotates.

[0182] In this embodiment, the third direction is the length direction of the guide hole 531, and the first connector 54 is slidably inserted through the guide hole 531; the first connector 54 is an M4×10 female screw.

[0183] Optionally, the control box locking device 5 also includes a ball screw 57, which passes through the main body 521. Rotation of the main body 521 causes the end of the ball screw 57 to abut against the control box body 51. By providing the ball screw 57, when the main body 521 rotates to a certain extent, the ball screw 57 restricts the rotation of the main body 521. In this embodiment, the nominal diameter of the ball screw 57 is 4 mm and its length is 10 mm. The structure, arrangement, and principle of the ball screw 57 can refer to existing technologies.

[0184] To limit the sliding direction of the clamping member 53 within the control box 51, the control box locking device 5 further includes a second connecting member 55. The second connecting member 55 is connected to the control box 51. The clamping member 53 has an oblong hole 532, and the second connecting member 55 is slidably disposed within the oblong hole 532. By configuring the second connecting member 55 and the oblong hole 532 to cooperate, when the clamping member 53 slides, the second connecting member 55 slides along the inner wall of the oblong hole 532, thereby limiting the sliding direction of the clamping member 53.

[0185] Optionally, at least two oblong holes 532 are provided at intervals, and the second connectors 55 are provided in a one-to-one correspondence with the oblong holes 532. In this embodiment, the first direction is the length direction of the oblong holes 532, and the second connectors 55 are inserted into the oblong holes 532; three second connectors 55 are provided side by side at intervals along the first direction; the second connectors 55 are M4×14 flat-head Phillips screws.

[0186] To limit the relative position of the control box 51 and the housing frame 1 during installation, the control box locking device 5 also includes positioning members 512, with both ends of the positioning members 512 inserted into the control box 51 and the housing frame 1, respectively. By setting the positioning members 512, the relative position of the control box 51 and the housing frame 1 can be limited, ensuring the accurate installation position of the control box 51. In this embodiment, the positioning members 512 are positioning pins; at least two positioning members 512 are spaced apart.

[0187] Optionally, the drive assembly 52 also includes a button 523, which is located outside the main body 521 and connected to the locking member 522. The button 523 is configured to press and cause the locking member 522 to press against the second elastic member 524. By setting the button 523, when holding the handle with one hand, pressing the button 523 will control the locking member 522 to rotate, so that the drive assembly 52 reaches the unlocked state. When the finger is released from the button 523, the locking member 522 will automatically reset.

[0188] In this embodiment, there are two locking members 522 and two buttons 523. Each button 523 corresponds to one locking member 522, thereby driving one clamping member 53. The control box locking device 5 also includes a fastener 525. The button 523 is fixed to the locking member 522 by the fastener 525. There are two fasteners 525. The fastener 525 can be an M2.5 round head screw.

[0189] Optionally, the first end of the locking member 522 is provided with a cylindrical protrusion 5221, and the second elastic member 524 is at least partially sleeved on the cylindrical protrusion 5221. By providing the cylindrical protrusion 5221, it is convenient to install the second elastic member 524 and the locking member 522, and the end of the second elastic member 524 can abut against the locking member 522. In this embodiment, the second elastic member 524 is partially sleeved on the cylindrical protrusion 5221, and the two ends of the second elastic member 524 abut against the main body 521 and the locking member 522, respectively.

[0190] If Figures 43 and 44 are taken as the initial state of the control box locking device 5, at this time, the locking member 522 is engaged with the hook 511 (the drive assembly 52 is in the locked state), and the engaging end 533 of the locking member 53 is engaged with the engaging part 17 of the housing frame 1; when the button 523 is pressed, referring to Figures 45 and 46, the locking member 522 rotates a certain angle in the X1 direction with the rotating connector 526 as the center, and the first end of the locking member 522 presses the second elastic member 524 against the main body 521, compressing the second elastic member 524, and the locking member 522... The second end disengages from the hook 511 (the drive assembly 52 reaches the unlocked state), at which point the first connector 54 is located at the top of the guide hole 531; then the main body 521 rotates along the Y1 direction, see Figures 47-49. As the main body 521 rotates along the Y1 direction, the first connector 54 slides to the bottom of the guide hole 531. At the same time, the clamping member 53 slides inside the control box 51. The clamping member 53 moves along the first direction toward the hook 511, so that the clamping end 533 of the clamping member 53 disengages from the clamping part 17 of the box frame 1.

[0191] The following is the installation and usage process of the control box locking device 5:

[0192] First, the tail end of the main body 521 is passed through the control box 51, and the main body 521 and the clamping member 53 are fixed by the first connector 54. Then, the main body 521 is rotatably fixed to the control box 51 by the third connector 56, and the clamping member 53 is fixed to the control box 51 by the second connector 55. Thus, when the main body 521 rotates, it can drive the clamping member 53 to slide in the first direction inside the control box 51.

[0193] Subsequently, the locking member 522 and the second elastic member 524 are installed in the main body 521 using the rotating connector 526, and the button 523 is fixed to the locking member 522 using the fastener 525, so that pressing the button 523 can drive the locking member 522 to rotate and achieve rotation locking; then the ball screw 57 is fixed to the main body 521 to achieve rotation limit.

[0194] Referring to Figure 49, during use, ensure that the locking part 522 is disengaged from the hook 511, and that the drive assembly 52 can rotate relative to the control box 51 (i.e., the drive assembly 52 is in the unlocked state). Hold the main body 521 with one hand and place the entire control box 51 with the locking structure on the box frame 1, so that the two ends of the positioning part 512 are inserted into the control box 51 and the box frame 1 respectively, thereby determining the relative position of the control box 51 and the box frame 1 and ensuring installation accuracy.

[0195] After placing the control box 51 in place, hold the main body 521 and rotate it in the Y2 direction. During the rotation, the locking member 53 will slide inside the control box 51. The locking member 53 will move in the first direction away from the hook 511. The locking end 533 of the locking member 53 will engage with the locking part 17 of the box frame 1, thereby installing the control box 51 on the box frame 1.

[0196] Referring to Figure 46, rotating the main body 521 along the Y2 direction causes the second end of the locking member 522 to approach the hook 511. The hook 511 acts as a pusher on the locking member 522, causing the locking member 522 to rotate a certain angle along the X1 direction around the rotating connector 526. The first end of the locking member 522 presses the second elastic member 524 against the main body 521, compressing the second elastic member 524 and causing the second end of the locking member 522 to lift up. Referring to Figure 44, after the second end of the locking member 522 lifts up under the action of the second elastic member 524, it can engage with the hook 511 and automatically reset. At this time, the main body 521 cannot continue to rotate (the drive assembly 52 reaches the locked state). It can be understood that during installation, the locking member 522 can be lifted by the hook 511, so there is no need to press the button 523; when disassembling the control box 51, pressing the button 523 can control the rotation of the locking member 522, thereby disengaging the locking member 522 from the hook 511.

[0197] The main body 521 is locked by the locking element 522 as a safety device to prevent accidental unlocking. The entire operation process is completed on the drive component 52, which is suitable for holding the main body 521 with one hand and operating the button 523, so as to realize quick operation by one person with one hand.

Claims

1. A display screen, comprising: Box frame (1); The quick-lock device (2) includes a first lock body (21) and a second lock body (22). The first lock body (21) is provided at the first end of the box frame (1) along the first direction, and the second lock body (22) is provided at the second end of the box frame (1) along the first direction. The first lock body (21) of one of the two adjacent box frames (1) along the first direction and the second lock body (22) of the other are connected. The arc lock device (3) includes an arc lock mechanism and a second lock rod assembly (39). The arc lock mechanism is provided on one side of the box frame (1) along the second direction, and the second lock rod assembly (39) is provided on the other side. The arc lock mechanism of one of the two adjacent box frames (1) along the second direction is connected to the second lock rod assembly (39) of the other. The arc lock device (3) is configured to adjust the splicing angle of the two adjacent box frames (1) along the second direction. A control box locking device (5) includes a control box body (51) and a locking structure. The control box body (51) is engaged with the housing frame (1) via the locking structure. The locking structure includes: The drive assembly (52) is rotatably connected to the control box (51). The drive assembly (52) has a locked state that engages with the control box (51) and an unlocked state that rotates relative to the control box (51). The clamping member (53) is connected to the drive assembly (52) and is at least partially slidably disposed within the control box (51). The rotation of the drive assembly (52) can drive the clamping member (53) to slide within the control box (51) so that the clamping member (53) engages with the box frame (1).

2. The display screen according to claim 1, wherein, The first lock body (21) includes a locking seat (211) and a first locking rod assembly (212), wherein the first locking rod assembly (212) is configured to lock the locking seat (211) to the second lock body (22); The locking seat (211) includes a first seat body (2111) and a first connecting post (2112). The first seat body (2111) is located at one end of the first connecting post (2112) near the second lock body (22), and the center of the first seat body (2111) is provided with a first connecting hole (2113) that passes through the first connecting post (2112). The first locking rod assembly (212) includes a first locking rod (2121), which extends out of the first seat (2111) after passing through the first connecting hole (2113) and connects with the second lock body (22); the outer periphery of the first locking rod (2121) is provided with an extension limiting groove (21211). The first base (2111) is provided with a first limiting component (213) on the side near the first connecting post (2112), and the first limiting component (213) is located in the circumference of the first connecting post (2112); the first limiting component (213) includes a first limiting post (2131), the first limiting post (2131) is telescopically oriented, the first limiting post (2131) passes through the first connecting post (2112) and extends into the first connecting hole (2113), the extension of the first limiting post (2131) can cooperate with the extension limiting groove (21211) so that the first locking rod (2121) is kept in the extended state.

3. The display screen according to claim 2, wherein, The first lock body (21) further includes a locking sleeve (214). The end of the locking sleeve (214) near the first seat (2111) is rotatably connected to the first connecting post (2112). The first locking rod (2121) passes through the locking sleeve (214) and the first connecting hole (2113) in sequence. The outer periphery of the locking sleeve (214) cooperates with the first limiting component (213). Rotating the locking sleeve (214) can extend and retract the first limiting post (2131) to drive the first locking rod (2121) to move. The first base (2111) is provided with a first limiting hole (21111) on the side near the first connecting post (2112), and the first limiting hole (21111) is located in the circumferential direction of the first connecting post (2112); The first limiting component (213) further includes a first limiting spring (2132) and a clamping plate (2133). There is a gap between the first limiting hole (21111) and the first connecting post (2112), and the gap is located at the end away from the first seat (2111). The first limiting spring (2132) is located at the end of the first limiting post (2131) away from the first connecting post (2112). The clamping plate (2133) is located at the end of the first limiting post (2131) close to the first connecting post (2112). The locking sleeve (214) extends into the gap and cooperates with the clamping plate (2133). Rotating the locking sleeve (214) can extend and retract the first limiting post (2131).

4. The display screen according to claim 3, wherein, The locking sleeve (214) has a vertical cut surface (2141) on its outer periphery. When the first limiting post (2131) extends and engages with the extension limiting groove (21211), the pressing plate (2133) abuts against the vertical cut surface (2141). When the locking sleeve (214) is rotated, the pressing plate (2133) abuts against the outer periphery of the locking sleeve (214), which can cause the first limiting post (2131) to retract and disengage from the extension limiting groove (21211).

5. The display screen according to claim 2, wherein, The outer periphery of the first locking rod (2121) is also provided with a locking limiting groove (21213). The depth of the locking limiting groove (21213) is less than the depth of the extension limiting groove (21211). The locking limiting groove (21213) extends along the length direction of the first locking rod (2121). The extension limiting groove (21211) is located at the end of the locking limiting groove (21213) away from the first locking rod (2121) and connected to the second lock body (22).

6. The display screen according to claim 1, wherein, The arc lock mechanism includes an arc lock base (31) and a pin lock assembly (32). The pin lock assembly (32) is located on one side of the arc lock base (31), and the second lock rod assembly (39) cooperates with the pin lock assembly (32) to lock. The arc lock mechanism also includes: The arc lock slider (33) has a first groove (3111) extending circumferentially inside the arc lock base (31). The arc lock slider (33) slides in the first groove (3111), and the two ends of the first groove (3111) pass through the two side walls of the arc lock base (31). The pin lock assembly (32) is provided on one side of the arc lock slider (33). The fixed pressure block (36) is provided with a first mounting hole (331) on the arc-shaped locking slider (33) with its center line extending radially. The fixed pressure block (36) is telescopically disposed in the first mounting hole (331). An angle adjustment assembly includes an angle adjustment knob (34) and a connecting rod (35). The connecting rod (35) is located at one end of the angle adjustment knob (34) near the arc lock seat (31). The connecting rod (35) passes through the fixed pressure block (36) and is rotatably connected to the arc lock slider (33). The fixed pressure block (36) and the mating end face of the angle adjustment knob (34) are provided with an angle locking position and an angle unlocking position. Rotating the angle adjustment knob (34) allows the angle adjustment knob (34) to selectively engage with the angle locking position or the angle unlocking position. The fixed pressure block (36) can be fixed or unfixed with the arc lock seat (31).

7. The display screen according to claim 6, wherein, The angle locking position includes a first locking plane (3612), and the angle unlocking position includes a first unlocking plane (3613). The height of the first unlocking plane (3613) is lower than that of the first locking plane (3612), and there are two first locking planes (3612). The first unlocking plane (3613) is located between the two first locking planes (3612).

8. The display screen according to claim 6, wherein, The fixed pressure block (36) includes a pressure head (361) and a first sleeve (362). The first sleeve (362) is located at one end of the pressure head (361) near the arc lock slider (33), and the outer diameter of the first sleeve (362) is smaller than the outer diameter of the pressure head (361). The first sleeve (362) has a through hole (3621) that passes through the pressure head (361). The top of the arc lock seat (31) is provided with a groove along the first sliding groove. The first clearance groove (3121) extends in the extension direction of (3111), the pressure head (361) is located between the angle adjustment knob (34) and the arc lock seat (31), the first sleeve (362) enters the first mounting hole (331) through the first clearance groove (3121), and the connecting rod (35) passes through the through hole (3621) and enters the first mounting hole (331) to be rotatably connected to the arc lock slider (33); The first sleeve (362) is telescopically disposed in the first mounting hole (331) by the first spring (37); the first mounting hole (331) is configured as a stepped hole, the first spring (37) is sleeved on the outer periphery of the connecting rod (35), and the first end of the first spring (37) abuts against the end of the first sleeve (362) away from the pressure head (361), and the second end of the first spring (37) abuts against the stepped surface of the stepped hole.

9. The display screen according to claim 1, wherein, The box frame (1) includes a frame body (13) and a protective mechanism (14). The protective mechanism (14) is located at both ends of the frame body (13) along a first direction. The protective mechanism (14) includes a protective plate (141), a connecting frame (142), and a first elastic element (143). The protective plate (141) extends along the length direction of the end of the frame body (13). The connecting frame (142) is located on one side of the protective plate (141). The frame body (13) is provided with a receiving cavity (131). The first elastic element (143) The elastic element (143) is disposed in the receiving cavity (131) and connected to the connecting frame (142). The extension and retraction direction of the first elastic element (143) is set at a preset angle with the protective plate (141). When the connecting frame (142) is subjected to force, it can retract into the receiving cavity (131) and compress the first elastic element (143). The first elastic element (143) can drive the connecting frame (142) to extend out of the receiving cavity (131) so that the connecting frame (142) can drive the protective plate (141) to extend to the front side of the display module (4).

10. The display screen according to claim 9, wherein, The bottom surface of the receiving cavity (131) is an inclined surface (1311), and the inclined surface (1311) forms a preset angle with the protective plate (141). The bottom surface of the connecting frame (142) is parallel to the inclined surface (1311). The inclined surface (1311) is provided with a first groove (13111), and the bottom surface of the first groove (13111) is parallel to the inclined surface (1311). The first elastic member (143) is provided in the first groove (13111). The bottom surface of the connecting frame (142) is provided with a second connecting post (1421), and the second connecting post (1421) is inserted into the first elastic member (143) in a direction perpendicular to the inclined surface (1311).

11. The display screen according to claim 10, wherein, The connecting frame (142) is provided with a guide groove (1422) whose center line is parallel to the inclined surface (1311). The receiving cavity (131) is provided with a guide member. The guide member cooperates with the guide groove (1422) to provide guidance for the movement of the protective plate (141).

12. The display screen according to claim 9, wherein, The protection mechanism (14) further includes a second limiting component (144), which is telescopically disposed on the frame body (13). The protection plate (141) is provided with a second limiting hole (1411). The second limiting component (144) is configured to cooperate with the second limiting hole (1411) to fix the protection plate (141) when the protection plate (141) extends to the front side of the display module (4).

13. The display screen according to claim 1, further comprising a display module (4), the display module (4) comprising: The first bottom shell (41) and the light-emitting diode lamp board (42) are mounted on the front side of the first bottom shell (41), and a maintenance hole (43) is provided through the light-emitting diode lamp board (42) and the first bottom shell (41). The rear cover (44) is connected to the rear side of the first bottom shell (41); A locking device (45) is provided between the first bottom shell (41) and the rear cover (44). The locking device (45) includes a disassembly shaft (451), a first locking member (452), and a second locking member (453). The disassembly shaft (451) is provided with a transmission part and a maintenance part (4512). The ends of the first locking member (452) and the second locking member (453) that are close to each other are engaged with the transmission part. When the disassembly shaft (451) rotates, the transmission part drives the first locking member (452) and the second locking member (453) to move towards each other or away from each other. The ends of the first locking member (452) and the second locking member (453) that are away from each other are provided with a snap-fit ​​part (17). The rear cover (44) is provided with a clearance opening corresponding to the snap-fit ​​part (17). The maintenance hole (43) is provided corresponding to the maintenance part (4512). The maintenance pin (46) passes through the maintenance hole (43) and applies force to the maintenance part (4512), which can make the disassembly shaft (451) rotate. The housing frame (1) is provided with a snap-fit ​​position (16) that snaps into the snap-fit ​​part (17).

14. The display screen according to claim 13, wherein, The maintenance hole (43) includes an unlocking hole (431) and a locking hole (432), which are spaced apart. The maintenance part (4512) includes a second unlocking plane (45121) and a second locking plane (45122), which are spaced apart by a preset angle along the circumferential direction of the disassembly shaft (451). The unlocking hole (431) can correspond to the second unlocking plane (45121), and the locking hole (432) can correspond to the second locking plane (45122).

15. The display screen according to claim 14, wherein, The maintenance part (4512) further includes a connecting arc surface (45123) configured to connect the second unlocking plane (45121) and the second locking plane (45122). The connecting arc surface (45123) has a first limiting groove (45124) at one end near the second unlocking plane (45121), and a second limiting groove (45125) at one end near the second locking plane (45122). The first bottom shell (41) is provided with a limiting protrusion (412) on the side near the disassembly shaft (451). The limiting protrusion (412) is located between the unlocking hole (431) and the locking hole (432). When the limiting protrusion (412) slides into the first limiting groove (45124), the unlocking hole (431) corresponds to the second unlocking plane (45121). When the limiting protrusion (412) slides into the second limiting groove (45125), the locking hole (432) corresponds to the second locking plane (45122).

16. The display screen according to claim 13, wherein, The transmission unit includes a gear structure (4511) disposed on the outer periphery of the disassembly shaft (451). The first locking member (452) is provided with a first rack structure (4522) at one end near the second locking member (453). The second locking member (453) is provided with a second rack structure (4532) at one end near the first locking member (452). The first rack structure (4522) is located on the side of the gear structure (4511) near the rear cover (44) and meshes with the gear structure (4511). The second rack structure (4532) is located on the side of the gear structure (4511) near the first bottom shell (41) and meshes with the gear structure (4511).

17. The display screen according to claim 1, wherein, The driving component (52) includes: The main body (521) is rotatably connected to the control box (51) and connected to the clamping member (53); A locking member (522) is rotatably disposed within the main body (521). The first end of the locking member (522) is connected to the main body (521) through a second elastic member (524), and the second end of the locking member (522) is engaged with the control box (51). The main body (521) is provided with a button (523), which is connected to the locking member (522) and is configured to press and drive the locking member (522) to press against the second elastic member (524).

18. The display screen according to claim 17, wherein, The control box locking device (5) further includes a first connector (54). The clamping member (53) is provided with a guide hole (531). The first end of the first connector (54) is rotatably connected to the main body (521), and the second end of the first connector (54) is slidably disposed in the guide hole (531). The rotation of the main body (521) can drive the first connector (54) to slide in the guide hole (531).

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