Display screen

Abstract

The invention relates to the technical field of LED display screens, and discloses a display screen. The display screen comprises a box frame, a quick locking device, a radian locking device and a control box locking device. The quick locking device comprises a first lock body and a second lock body, the first lock body is arranged at one end of each box body frame in the first direction, the second lock body is arranged at the other end of each box body frame in the first direction, and the first lock body of one box body frame is connected with the second lock body of the other box body frame in the two adjacent box body frames in the first direction; a radian lock mechanism is arranged on one side, in the second direction, of each box body frame, a second lock rod assembly is arranged on the other side of each box body frame, the radian lock mechanism of one of the two adjacent box body frames in the second direction is connected with the second lock rod assembly of the other one of the two adjacent box body frames in the second direction, and the radian lock mechanism is used for adjusting the splicing angle of the two adjacent box body frames in the second direction; and the control box body is clamped with the box body frame through a locking structure. The stability and safety of the display screen are enhanced, the control box body can be quickly disassembled and assembled with one hand, and maintenance is convenient.

Description

Technical Field

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

[0002] As the main carrier of modern media communication, LED display screens are widely used in various occasions, especially in the fields of outdoor advertising, information release, etc., playing an irreplaceable role. However, the existing LED display screens still have some shortcomings in the fixing of the cabinet frame and the control box.

[0003] At present, most LED screens used outdoors are assembled by splicing multiple screens. The cabinet frames of these screens are often connected by screws. Although this connection method is stable, it is relatively cumbersome during installation and maintenance. Screw connection requires professional tools and certain skills, which not only increases the installation cost but also prolongs the installation time. At the same time, when the screen needs to be disassembled or replaced, the disassembly process of the screw connection is also complicated, which is not conducive to quick maintenance.

[0004] 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 buckle locks are used to fix it. Although the control box can be detachably installed on the LED display screen box, the disassembly and assembly steps are cumbersome and difficult to complete with one hand, making it impossible to achieve quick maintenance.

[0005] Based on this, a display screen is urgently needed to solve the above-mentioned problems. Summary of the invention

[0006] Based on the above, the purpose of the present invention is to provide a display screen that can not only reduce installation and maintenance costs and improve work efficiency, but also enhance the stability and safety of the display screen and extend its service life; the arc lock device adjusts the splicing angle of two adjacent box frames along the second direction; the control box body can be quickly disassembled and assembled with one hand, which is convenient for maintenance.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A display screen, comprising:

[0009] Box frame;

[0010] A quick lock device, the quick lock device comprising a first lock body and a second lock body, the first lock body being arranged at one end of the box frame along the first direction, the second lock body being arranged at the other end along the first direction, the first lock body of one of two adjacent box frames along the first direction being connected to the second lock body of the other;

[0011] An arc locking device, comprising an arc locking mechanism and a second locking rod assembly, wherein the arc locking mechanism is arranged on one side of the box frame along the second direction, and the second locking rod assembly is arranged on the other side, wherein the arc locking mechanism of one of the two adjacent box frames along the second direction is connected to the second locking rod assembly of the other, and the arc locking device is used to adjust the splicing angle of the two adjacent box frames along the second direction;

[0012] A control box locking device, 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:

[0013] A driving assembly is rotatably connected to the control box body, wherein the driving assembly has a locked state in which the driving assembly is engaged with the control box body and an unlocked state in which the driving assembly rotates relative to the control box body;

[0014] The clamping member is connected to the driving assembly and is at least partially slidably disposed in the control box body. The rotation of the driving assembly can drive the clamping member to slide in the control box body, so that the clamping member is clamped with the box frame.

[0015] As a preferred technical solution of a display screen, the first lock body includes a locking seat and a first locking rod assembly, and the first locking rod assembly is used to lock the locking seat with the second lock body;

[0016] The locking seat comprises a first seat body and a first connecting column, the first seat body is arranged at one end of the first connecting column, and a first connecting hole penetrating the first connecting column is arranged at the center of the first seat body;

[0017] The first locking rod assembly comprises a first locking rod, which passes through the first connecting hole and then extends out of the first seat body to be connected with the second lock body; an extension limiting groove is arranged on the outer periphery of the first locking rod;

[0018] A first limiting assembly is provided on one side of the first seat body close to the first connecting column, and the first limiting assembly is arranged in the circumference of the first connecting column; the first limiting assembly includes a first limiting column, the first limiting column is telescopically arranged, the first limiting column passes through the first connecting column and extends into the first connecting hole, and the first limiting column is extended to cooperate with the extended limiting groove to keep the first locking rod in an extended state.

[0019] As a preferred technical solution of the display screen, the first lock body further includes a locking sleeve, one end of the locking sleeve is rotatably connected to the first connecting column, the first locking rod passes through the locking sleeve and the first connecting hole in sequence, the outer periphery of the locking sleeve cooperates with the first limiting assembly, and the locking sleeve is rotated to cause the first limiting column to extend and retract, thereby driving the first locking rod to move;

[0020] A first limiting hole is provided on one side of the first seat body close to the first connecting column, and the first limiting hole is located in the circumference of the first connecting column;

[0021] The first limiting assembly also includes a first limiting spring and a clamping plate. A gap is left between the first limiting hole and the first connecting column, and the gap is located at an end away from the first seat body. The first limiting spring is arranged at an end of the first limiting column away from the first connecting column. The clamping plate is arranged at an end of the first limiting column close to the first connecting column. The locking sleeve extends into the gap and cooperates with the clamping plate. Rotating the locking sleeve can make the first limiting column extend and retract.

[0022] As a preferred technical solution for a display screen, the outer periphery of the locking sleeve is provided with a vertical section, and when the first limit column is extended and cooperates with the extension limit groove, the clamping plate abuts against the vertical section; by rotating the locking sleeve, the clamping plate abuts against the outer periphery of the locking sleeve, which can cause the first limit column to contract and disengage from the extension limit groove.

[0023] As a preferred technical solution for a display screen, a locking limit groove is also provided on the outer periphery of the first locking rod, the depth of the locking limit groove is less than the depth of the extending limit groove, and the locking limit groove extends along the length direction of the first locking rod, and the extending limit groove is provided at the end of the locking limit groove away from the connection between the first locking rod and the second lock body.

[0024] As a preferred technical solution of a display screen, the arc lock mechanism includes an arc lock seat and a latch lock assembly, the latch lock assembly is arranged on one side of the arc lock seat, and the second lock rod assembly cooperates with the latch lock assembly to lock; the arc lock mechanism also includes:

[0025] An arc lock slider, wherein a first slide groove extending in a circumferential direction is arranged in the arc lock seat, the arc lock slider is slidably arranged in the first slide groove, and both ends of the first slide groove pass through the two side walls of the arc lock seat, and the latch lock assembly is arranged on one side of the arc lock slider;

[0026] A fixed pressure block, wherein the arc lock slider is provided with a first mounting hole whose center line extends radially, and the fixed pressure block is telescopically arranged in the first mounting hole;

[0027] The angle adjustment assembly includes an angle adjustment knob and a connecting rod, wherein the connecting rod is arranged at one end of the angle adjustment knob, and the connecting rod passes through the fixed pressure block and is rotatably connected to the arc lock slider. The mating end surfaces of the fixed pressure block and the angle adjustment knob are provided with an angle locking position and an angle unlocking position. By rotating the angle adjustment knob, the angle adjustment knob can be selectively matched with the angle locking position or the angle unlocking position, and the fixed pressure block can be fixed or released from the arc lock seat.

[0028] As a preferred technical solution for a display screen, the angle locking position includes a first locking plane, and the angle unlocking position includes a first unlocking plane. The height of the first unlocking plane is lower than the first locking plane, and two first locking planes are provided, and the first unlocking plane is located between the two first locking planes.

[0029] As a preferred technical solution of a display screen, the fixed pressure block includes a pressure head and a first sleeve, the first sleeve is arranged at one end of the pressure head, and the outer diameter of the first sleeve is smaller than the outer diameter of the pressure head, the first sleeve is provided with a through hole penetrating the pressure head, the top of the arc lock seat is provided with a first avoidance groove extending along the extension direction of the first slide groove, the pressure head is arranged between the angle adjustment knob and the arc lock seat, the first sleeve enters the first mounting hole through the first avoidance groove, the connecting rod passes through the through hole and enters the first mounting hole to be rotatably connected with the arc lock slider;

[0030] The first sleeve is telescopically arranged in the first mounting hole through a first spring; the first mounting hole is arranged as a stepped hole, the first spring is sleeved on the outer periphery of the connecting rod, and one end of the first spring abuts against one end of the first sleeve away from the pressure head, and the other end abuts against the stepped surface of the stepped hole.

[0031] As an optimal technical solution for a display screen, the box frame includes a frame body and a protection mechanism, the protection mechanism is arranged at both ends of the frame body along a first direction, the protection mechanism includes a protection plate, a connecting frame and a first elastic member, the protection plate extends along the length direction of the end of the frame body; the connecting frame is arranged on one side of the protective plate, and a accommodating cavity is arranged on the frame body, the first elastic member is arranged in the accommodating cavity and is connected to the connecting frame, the extension and contraction direction of the first elastic member is arranged at a preset angle with the protective plate, and the connecting frame can be retracted into the accommodating cavity and compress the first elastic member when subjected to force; the first elastic member can drive the connecting frame to extend out of the accommodating cavity, so that the connecting frame drives the protective plate to extend to the front side of the display module.

[0032] As a preferred technical solution for a display screen, the bottom surface of the accommodating cavity is an inclined surface, the inclined surface forms the preset angle with the protective plate, and the bottom surface of the connecting frame is parallel to the inclined surface; and the inclined surface is provided with a first groove, the bottom surface of the first groove is parallel to the inclined surface, the first elastic member is arranged in the first groove, and the bottom surface of the connecting frame is provided with a second connecting column, and the second connecting column is inserted into the first elastic member along a direction perpendicular to the inclined surface.

[0033] As a preferred technical solution for a display screen, a guide groove whose center line is parallel to the inclined surface is provided on the connecting frame, and a guide member is provided in the accommodating cavity, and the guide member cooperates with the guide groove to provide guidance for the movement of the protection plate.

[0034] As a preferred technical solution for a display screen, the protection mechanism also includes a second limiting component, which is telescopically arranged on the frame body, and a second limiting hole is arranged on the protection plate. The second limiting component is used to cooperate with the second limiting hole to fix the protection plate when the protection plate is extended to the front side of the display module.

[0035] As a preferred technical solution of a display screen, the display screen further includes a display module, and the display module includes:

[0036] A first bottom shell and an LED light board, wherein the LED light board is mounted on the front side of the first bottom shell, and a maintenance hole is provided through the LED light board and the first bottom shell;

[0037] A rear cover connected to the rear side of the first bottom shell;

[0038] A locking device is arranged between the first bottom shell and the back cover, and the locking device comprises a disassembly shaft, a first locking member and a second locking member. The disassembly shaft is provided with a transmission part and a maintenance part. The ends of the first locking member and the second locking member that are close to each other are both matched with the transmission part. When the disassembly shaft rotates, the transmission part drives the first locking member and the second locking member to move in a direction of approaching or moving away from each other. The ends of the first locking member and the second locking member that are away from each other are both provided with a clamping part, and the back cover is provided with an avoidance opening corresponding to the clamping part.

[0039] The maintenance hole is arranged corresponding to the maintenance part, and the maintenance ejector pin passes through the maintenance hole to apply force to the maintenance part, so as to make the disassembly shaft rotate;

[0040] The box frame is provided with a clamping position for clamping with the clamping part.

[0041] As a preferred technical solution for a display screen, the maintenance hole includes an unlocking hole and a locking hole, the unlocking hole and the locking hole are arranged at intervals, the maintenance part includes a second unlocking plane and a second locking plane, the second unlocking plane and the second locking plane are arranged at preset angles along the circumferential direction of the disassembly and assembly axis; the unlocking hole can correspond to the second unlocking plane; the locking hole can correspond to the second locking plane.

[0042] As a preferred technical solution of a display screen, the maintenance portion further includes a connecting arc surface for connecting the second unlocking plane and the second locking plane, and a first limiting groove is provided at one end of the connecting arc surface close to the second unlocking plane, and a second limiting groove is provided at one end of the connecting arc surface close to the second locking plane;

[0043] A limiting protrusion is provided on one side of the first bottom shell close to the disassembly and assembly axis, and the limiting protrusion is located between the unlocking hole and the locking hole. When the limiting protrusion slides into the first limiting groove, the unlocking hole corresponds to the second unlocking plane; when the limiting protrusion slides into the second limiting groove, the locking hole corresponds to the second locking plane.

[0044] As a preferred technical solution for a display screen, the transmission part includes a gear structure arranged on the outer periphery of the disassembly and assembly shaft, a first rack structure is provided at one end of the first locking member close to the second locking member, and a second rack structure is provided at one end of the second locking member close to the first locking member, the first rack structure is located on a side of the gear structure close to the back cover and meshes with the gear structure; the second rack structure is located on a side of the gear structure close to the first bottom shell and meshes with the gear structure.

[0045] As a preferred technical solution for a display screen, the driving assembly includes:

[0046] A main body, rotatably connected to the control box body and connected to the clamping member;

[0047] A locking member is rotatably disposed in the main body, a first end of the locking member is connected to the main body via a second elastic member, and a second end of the locking member is engaged with the control box body;

[0048] A button is disposed outside the main body, and the button is connected to the locking member and is used for pressing the locking member to drive the locking member to press the second elastic member.

[0049] As an optimal technical solution for a display screen, the control box locking device also includes a first connecting member, the clamping member is provided with a guide hole, one end of the first connecting member is rotatably connected to the main body and the other end is slidably arranged in the guide hole, and the rotation of the main body can drive the first connecting member to slide in the guide hole.

[0050] The beneficial effects of the present invention are:

[0051] The present invention provides a display screen. When assembled, the first lock body of one of the two adjacent box frames along the first direction is connected to the second lock body of the other one to achieve the connection of the two adjacent box frames along the first direction; the arc lock mechanism of one of the two adjacent box frames along the second direction is connected to the second lock rod assembly of the other one to achieve the splicing and fixation of adjacent display screens, which can not only reduce the installation and maintenance costs and improve work efficiency, but also enhance the stability and safety of the display screen and extend its service life. Secondly, the arc lock device adjusts the splicing angle of the two adjacent box frames along the second direction, which is easy to operate, improves the angle adjustment efficiency, and meets the angle requirements of the display screen.

[0052] Furthermore, the control box body is connected to the box frame through a locking structure, and the locking structure includes a driving assembly and a clamping member. The driving assembly is rotatably connected to the control box body, and the driving assembly has a locked state of being connected to the control box body and an unlocked state of being relatively rotated with the control box body; the clamping member is connected to the driving assembly and at least partially slidably arranged in the control box body, and the driving assembly can drive the clamping member to slide in the control box body so that the clamping member is clamped with the box frame. By setting the driving assembly and the clamping member, when the driving assembly is in the unlocked state, the driving assembly is rotated to drive the clamping member to slide in the control box body, so that the clamping member is pushed to the corresponding position of the box frame and clamped with the box frame, and then the driving assembly is clamped with the control box body to keep the driving assembly in the locked state, so that the control box body is installed on the box frame; when the control box body needs to be removed, it is only necessary to operate the driving assembly with one hand to make the driving assembly reach the unlocked state, and the driving assembly is rotated to drive the clamping member to be separated from the clamping position with the box frame. The structure is simple and easy to operate, and it can be quickly disassembled and assembled with one hand for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0054] Figure 1 is a schematic diagram of the structure of a display screen provided by an embodiment of the present invention;

[0055] Figure 2 is a schematic structural diagram of a quick lock device provided by an embodiment of the present invention;

[0056] Figure 3is an exploded view of a quick lock device provided by an embodiment of the present invention;

[0057] Figure 4 is a cross-sectional view of the cooperation between the first limiting assembly and the first locking rod of the quick locking device provided by an embodiment of the present invention;

[0058] Figure 5 is a cross-sectional view of the cooperation between the first locking rod assembly and the locking sleeve of the quick locking device provided by an embodiment of the present invention;

[0059] Figure 6 is a top view of the first operating handle of the quick lock device provided by the embodiment of the present invention when it is in a locked state and an unlocked state;

[0060] Figure 7 is a schematic structural diagram of an arc locking device provided by an embodiment of the present invention;

[0061] Figure 8 is a cross-sectional view of the arc locking device provided by an embodiment of the present invention when the locking angle is 0°;

[0062] Fig. 9 is a cross-sectional view of the arc locking device provided by an embodiment of the present invention when the angle is unlocked;

[0063] Fig.10 is an exploded view of the arc locking device provided by an embodiment of the present invention;

[0064] Fig.11 is a schematic structural diagram of a fixed pressing block provided in an embodiment of the present invention;

[0065] Fig.12 It is a structural schematic diagram of the third seat body of the arc lock seat provided by an embodiment of the present invention;

[0066] Fig.13 It is a structural schematic diagram of the upper cover of the arc lock base provided by an embodiment of the present invention;

[0067] Fig.14 is a schematic structural diagram of an angle adjustment knob and a connecting rod provided in an embodiment of the present invention;

[0068] Fig.15 is a schematic structural diagram of a latch lock piece provided by an embodiment of the present invention;

[0069] Fig.16 is a top view of the arc locking device provided by an embodiment of the present invention;

[0070] Fig.17 is a cross-sectional view of the arc lock device provided by an embodiment of the present invention when the locking angle is -10°;

[0071] Fig.18is a cross-sectional view of the arc locking device provided by an embodiment of the present invention when the locking angle is 15°;

[0072] Fig.19 is a structural schematic diagram of a box frame provided by an embodiment of the present invention;

[0073] Fig. 20 is a schematic diagram of the structure of a display screen provided by an embodiment of the present invention;

[0074] Fig.21 is an exploded schematic diagram of a box frame provided by an embodiment of the present invention;

[0075] Fig. 22 is a side cross-sectional view of a display screen when the protection plate provided by an embodiment of the present invention is in an extended state;

[0076] Fig.23 yes Fig. 22 A partial enlarged view of the middle A;

[0077] Fig.24 is a side cross-sectional view of a display screen when the protection plate provided by an embodiment of the present invention is in a retracted state;

[0078] Fig.25 yes Fig.24 A partial enlarged view of point B in the middle;

[0079] Fig.26 is an exploded schematic diagram of a box frame and a display module provided by an embodiment of the present invention;

[0080] Fig. 27 is a front schematic diagram of a box frame provided by an embodiment of the present invention;

[0081] Fig.28 is a schematic diagram of a display module provided by an embodiment of the present invention when it is installed on a box frame and not locked;

[0082] Fig.29 is a schematic diagram of a display module provided by an embodiment of the present invention when it is installed on a box frame and locked;

[0083] Fig.30 is a schematic diagram of the structure of a display module provided by an embodiment of the present invention;

[0084] Fig.31 is an exploded view of a display module provided by an embodiment of the present invention;

[0085] Fig.32 is a cross-sectional view of the locking device in the display module provided by an embodiment of the present invention;

[0086] Fig.33 It is a schematic structural diagram of a second operating handle and a disassembly shaft provided in an embodiment of the present invention;

[0087] Fig.34 is a cross-sectional view of unlocking a display module by a maintenance ejector pin provided in an embodiment of the present invention;

[0088] Fig.35 is a cross-sectional view of locking a display module by a maintenance ejector pin provided in an embodiment of the present invention;

[0089] Fig.36 1 is a first structural schematic diagram of a box frame and a control box body (with a locking structure) provided in an embodiment of the present invention;

[0090] Fig.37 is a second structural schematic diagram of a box frame and a control box body (with a locking structure) provided in an embodiment of the present invention;

[0091] Fig.38 yes Fig.37 A partial enlarged view of point C in the middle;

[0092] Fig.39 It is a partial schematic diagram of a box frame and a control box body (with a locking structure) provided in an embodiment of the present invention;

[0093] Fig.40 is a schematic structural diagram of a control box body (with a locking structure) provided in an embodiment of the present invention;

[0094] Fig.41 It is a partial exploded view of a control box body (with a locking structure) provided in an embodiment of the present invention;

[0095] Fig.42 is a first side view of a control box body (with a locking structure) provided in an embodiment of the present invention;

[0096] Fig.43 is a first cross-sectional view of a control box body (with a locking structure) provided in an embodiment of the present invention;

[0097] Fig.44 yes Fig.43 A partial enlarged view of point D in the middle;

[0098] Fig.45 is a second cross-sectional view of a control box body (with a locking structure) provided in an embodiment of the present invention;

[0099] Fig.46 yes Fig.45 A partial enlarged view of point E in the middle;

[0100] Fig.47 is a second side view of the control box body (with a locking structure) provided in an embodiment of the present invention;

[0101] Fig.48is a third cross-sectional view of a control box body (with a locking structure) provided in an embodiment of the present invention;

[0102] Fig.49 yes Fig.48 A partial enlarged view of point F in the middle.

[0103] The following are marked in the figure:

[0104] 1. Box frame; 11. Mounting riser; 12. Mounting frame; 13. Frame body; 131. Accommodating 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. Protection mechanism; 141. Protection plate; 1411. Second limiting hole; 1412. Second avoidance groove; 142. Connecting frame; 1421. Second connecting column; 1422. Guide groove; 143. First elastic member; 144. Second limiting assembly; 1441. Second limiting column; 14411. Second column; 14412. Limiting part; 14413. Pressing part; 1442. Second limiting spring; 15. Magnet; 16. Clamping position; 17. Clamping part;

[0105] 2. Quick lock device; 21. First lock body; 211. Locking seat; 2111. First seat body; 21111. First limiting hole; 2112. First connecting column; 2113. First connecting hole; 212. First locking rod assembly; 2121. First locking rod; 21211. Extending limiting groove; 21212. First limiting ring; 21213. Locking limiting groove; 21214. Rubber sleeve; 21215. Card joint; 21216. Card groove; 2122. Lock rod spring; 213. First limiting assembly; 2131, first limiting column; 21311, limiting head; 21312, first column; 21313, spring mounting groove; 2132, first limiting spring; 2133, pressing 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, locking plate; 2211, first locking hole; 222, telescopic handle; 223, second seat body;

[0106] 3. Arc lock device; 31. Arc lock seat; 311. Third seat body; 3111. First slide groove; 312. Upper cover; 3121. First avoidance groove; 3122. First pressing tooth; 3123. Slider positioning hole; 3124. Angle scale line;

[0107] 32. latch lock assembly; 321. latch lock piece; 3211. second lock hole; 32111. first through hole; 32112. latch hole; 3212. handle; 322. lock piece side plate; 323. lock piece cover plate; 324. second spring;

[0108] 33, arc lock slider; 331, first mounting hole; 332, second positioning bead; 333, second slide groove; 334, extension part; 3341, avoidance hole;

[0109] 34. Angle adjustment knob; 341. First positioning bead;

[0110] 35. Connecting rod; 351. Threaded hole;

[0111] 36, fixed pressing block; 361, pressing 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;

[0112] 37. First spring;

[0113] 38. Limit screw;

[0114] 39. Second locking rod assembly; 391. Second locking rod; 392. Locking rod mounting plate; 393. Locking handle;

[0115] 4. Display module; 41. First bottom shell; 411. Accommodating groove; 412. Limiting protrusion; 413. First supporting block; 4131. First supporting groove; 414. Iron sheet; 415. convex column;

[0116] 42. LED light board;

[0117] 43, maintenance hole; 431, unlocking hole; 432, locking hole; 4301, first hole; 4302, second hole;

[0118] 44, rear cover; 441, first avoidance opening; 442, second avoidance opening; 443, third avoidance groove; 444, second groove;

[0119] 45. Locking device; 451. Disassembly and 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 member; 4521. First clamping part; 4522. First rack structure; 453. Second locking member; 4531. Second clamping part; 4532. Second rack structure; 454. Second operating handle;

[0120] 46. ​​Maintain the ejector pin;

[0121] 47. First screw;

[0122] 5. Control box locking device; 51. Control box body; 511. Hook; 512. Positioning piece;

[0123] 52, driving assembly; 521, main body; 522, locking member; 5221, cylindrical protrusion; 523, button; 524, second elastic member; 525, fastener; 526, rotating connecting member;

[0124] 53, clamping piece; 531, guide hole; 532, waist-shaped hole; 533, clamping end;

[0125] 54. First connecting piece; 55. Second connecting piece; 56. Third connecting piece; 57. Glass bead screw. DETAILED DESCRIPTION

[0126] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0127] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0128] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0129] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0130] like Figure 1 , Figure 36-Figure 42 As shown, this embodiment provides a display screen, which includes a box frame 1, a quick lock device 2, an arc lock device 3 and a control box locking device 5. Specifically, the quick lock device 2 includes a first lock body 21 and a second lock body 22. The box frame 1 is provided with the first lock body 21 at one end along the first direction, and the second lock body 22 is provided at the other end along the first direction. The first lock body 21 of one of the two adjacent box frames 1 along the first direction is connected to the second lock body 22 of the other; the arc lock device 3 includes an arc lock mechanism and a second locking rod assembly 39. The box frame 1 is provided with an arc lock mechanism on one side along the second direction, and the second lock rod assembly 39 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 used to adjust The control box locking device 5 includes a control box body 51 and a locking structure, the control box body 51 is clamped with the box frame 1 through the locking structure, the locking structure includes a driving assembly 52 and a clamping member 53, the driving assembly 52 is rotatably connected to the control box body 51, the driving assembly 52 has a locked state of clamping with the control box body 51 and an unlocked state of relative rotation with the control box body 51; the clamping member 53 is connected to the driving assembly 52 and at least partially slidably arranged in the control box body 51, the driving assembly 52 can drive the clamping member 53 to slide in the control box body 51, so that the clamping member 53 is clamped 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.

[0131] During assembly, the first lock body 21 of one of the two adjacent box frames 1 along the first direction is connected to the second lock body 22 of the other one to achieve the connection of the two adjacent box frames 1 along the first direction; 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 one to achieve the splicing and fixation of adjacent display screens, which can not only reduce the installation and maintenance costs and improve work efficiency, but also enhance the stability and safety of the display screen and extend its service life. Secondly, the arc lock device 3 adjusts the splicing angle of the two adjacent box frames 1 along the second direction, which is easy to operate, improves the angle adjustment efficiency, and meets the angle requirements of the display screen. Furthermore, the control box body 51 is clamped with the box frame 1 through a locking structure, and the locking structure includes a driving component 52 and a clamping member 53. The driving component 52 is rotatably connected to the control box body 51, and the driving component 52 has a locked state clamped with the control box body 51, and an unlocked state relatively rotating with the control box body 51; the clamping member 53 is connected to the driving component 52 and is at least partially slidably arranged in the control box body 51. The rotation of the driving component 52 can drive the clamping member 53 to slide in the control box body 51, so that the clamping member 53 is clamped with the box frame 1. By providing the driving assembly 52 and the clamping piece 53, when the driving assembly 52 is in the unlocked state, the driving assembly 52 is rotated to drive the clamping piece 53 to slide in the control box body 51, so that the clamping piece 53 is pushed to the corresponding position of the box frame 1 and is clamped with the box frame 1, and then the driving assembly 52 and the control box body 51 are clamped to keep the driving assembly 52 in the locked state, so that the control box body 51 is installed on the box frame 1; when the control box body 51 needs to be removed, it is only necessary to operate the driving assembly 52 with one hand to make the driving assembly 52 reach the unlocked state, and rotate the driving assembly 52 to drive the clamping piece 53 out of the clamping position with the box frame 1. The structure is simple and the operation is convenient, and it can be quickly disassembled and assembled with one hand for easy maintenance.

[0132] Specifically, two mounting vertical plates 11 are provided at both ends of the box frame 1 along the first direction, wherein the two mounting vertical plates 11 at one end are connected to the first lock body 21, and the two mounting vertical plates 11 at the other end are connected to the second lock body 22, and the first lock body 21 and the second lock body 22 are fixedly connected to the mounting vertical plates 11 by fastening screws.

[0133] When the quick lock device 2 in the prior art locks two adjacent box frames 1, the locking rod of the quick lock device 2 cannot remain in the extended state to position the two adjacent box frames 1, resulting in difficulty in positioning the two box frames 1 and reducing installation efficiency.

[0134] In order to solve the above technical problems, Figure 2-Figure 6As shown, 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 used to lock the locking seat 211 with the locking plate 221. The locking seat 211 includes a first seat body 2111 and a first connecting column 2112. The first seat body 2111 is arranged at one end of the first connecting column 2112, and a first connecting hole 2113 is arranged at the center of the first seat body 2111, which passes through the first connecting hole 2113 and then extends out of the first seat body 2111 to connect with the locking plate 221.

[0135] The second lock body 22 further includes a second base body 223 and a telescopic handle 222. The locking piece 221 is telescopically arranged in the second base body 223. The telescopic handle 222 is arranged at one side of the second base body 223 and connected to the locking piece 221. The locking piece 221 is provided with a first locking hole 2211. The inner diameter of the first locking hole 2211 is larger than the outer diameter of the first locking rod 2121. A through hole is arranged at the center of the second base body 223. A clamping groove 21216 is arranged at one end of the first locking rod 2121. The first locking rod 2121 extends out of the second base body 223 through the through hole and the first locking hole 2211. The locking piece 221 is moved by the telescopic handle 222 so that the clamping groove 21216 is clamped with the locking piece 221, thereby achieving the fixation of the first locking rod 2121 and the locking piece 221.

[0136] The outer circumference of the first locking rod 2121 is provided with an extended limiting groove 21211; a first limiting assembly 213 is provided on one side of the first seat body 2111 close to the first connecting column 2112, and the first limiting assembly 213 is arranged in the circumference of the first connecting column 2112; the first limiting assembly 213 includes a first limiting column 2131, which is telescopically arranged, and the first limiting column 2131 passes through the first connecting column 2112 and extends into the first connecting hole 2113. The first limiting column 2131 is extended to cooperate with the extended limiting groove 21211, so that the first locking rod 2121 remains in an extended state. When connecting two adjacent box frames 1, the first locking rod 2121 extending from one of the box frames 1 cooperates with the locking plate 221 on the other box frame 1, and after positioning is achieved, the first locking rod 2121 is operated to lock the locking seat 211 and the locking plate 221. The first locking rod 2121 of the quick locking device 2 can remain in an extended state, thereby achieving the positioning of the two box frames 1, making it easier to lock the two box frames 1 and improving the installation efficiency.

[0137] Specifically, a first limiting hole 21111 is provided on one side of the first seat body 2111 close to the first connecting column 2112, and the first limiting hole 21111 is located in the circumference of the first connecting column 2112. The first limiting assembly 213 is telescopically arranged in the first limiting hole 21111. A connecting hole connecting the first limiting hole 21111 and the first connecting hole 2113 is provided on the outer periphery of the locking seat 211, and the first limiting column 2131 extends into the first connecting hole 2113 through the connecting hole. When the first locking rod 2121 passes through the first connecting hole 2113, the first limiting column 2131 contracts. When the first locking rod 2121 passes through the first connecting hole 2113 and extends out of the first seat body 2111 and is connected to the first locking hole 2211 on the second seat body 223, the first limiting column 2131 extends and can cooperate with the extending limiting groove 21211, so that the first locking rod 2121 remains in the extended state.

[0138] The first limiting assembly 213 further includes a first limiting spring 2132 and a clamping plate 2133 . The first limiting spring 2132 is disposed at one end of the first limiting column 2131 away from the first connecting column 2112 , and the clamping plate 2133 is disposed at one end of the first limiting column 2131 close to the first connecting column 2112 . The first limiting column 2131 includes a limiting head 21311 and a first column 21312, the limiting head 21311 is connected to one end of the first column 21312, and a spring mounting groove 21313 is provided at the end of the limiting head 21311 away from the first column 21312, one end of the first limiting spring 2132 is connected to the end of the first limiting hole 21111 away from the connecting hole, and the other end is connected to the bottom of the spring mounting groove 21313, the limiting head 21311 is slidably disposed in the first limiting hole 21111, and the clamping plate 2133 is located between the limiting head 21311 and the first connecting column 2112. The force applied to the first limiting column 2131 is applied by the clamping plate 2133, so that the first limiting column 2131 compresses the first limiting spring 2132 to shrink; when the force applied to the clamping plate 2133 is removed, the first limiting column 2131 can extend under the action of the elastic restoring force of the first limiting spring 2132 to cooperate with the extended limiting groove 21211.

[0139] In one embodiment, the first limiting assembly 213 also includes a fixing plate 2134, which is disposed at one end of the first limiting hole 21111 away from the first connecting column 2112, and the fixing plate 2134 is interference fit with the first limiting hole 21111, and one end of the first limiting spring 2132 is connected to the fixing plate 2134, and the other end is connected to the first limiting column 2131. To facilitate the installation of the first limiting column 2131, the first limiting hole 21111 is set through one end away from the first connecting column 2112, and the clamping plate 2133 is provided with a through hole. The first limiting column 2131 is inserted into the through hole through the through end of the first limiting hole 21111 and placed in the first limiting hole 21111, and then the first limiting spring 2132 is placed in the spring mounting groove 21313, and finally the fixing plate 2134 is interference fit with the first limiting hole 21111, so that one end of the first limiting spring 2132 abuts against the fixing plate 2134, and the other end abuts against the bottom of the spring mounting groove 21313, providing elastic support force for the first limiting column 2131.

[0140] The locking rod in the prior art is usually driven by an operating member to move axially along the connecting hole, which is convenient for the installer to operate. However, the operating member moves axially along the connecting hole with the locking rod, and sufficient axial movement space must be left on the box frame 1. It is not applicable to the box frame 1 with limited axial movement space.

[0141] In order to improve the versatility of the quick locking device 2, the first lock body 21 also includes a locking sleeve 214, one end of the locking sleeve 214 is rotatably connected to the first connecting column 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 assembly 213, and rotating the locking sleeve 214 can make the first limiting column 2131 extend and retract to drive the first locking rod 2121 to move. The locking sleeve 214 is rotated so that the locking sleeve 214 drives the first limiting column 2131 to extend and retract, thereby realizing the limiting and limiting unlocking of the first locking rod 2121 in the first connecting hole 2113, so that when the first locking rod 2121 is limited and immovable in the first connecting hole 2113, the first locking rod 2121 remains in an extended state; when the first locking rod 2121 is limited and unlocked in the first connecting hole 2113, the first locking rod 2121 drives the second seat body 223 to move in a direction close to the first seat body 2111, and connects the first seat body 2111 and the second seat body 223 together, thereby realizing the connection of two adjacent box frames 1. When disassembling the two box frames 1, the locking plate 221 is moved by the telescopic handle 222, so that the first locking rod 2121 and the locking plate 221 are disengaged, and then the second seat body 223 can be moved in a direction away from the first seat body 2111.

[0142] Specifically, the outer circumference of the first connecting column 2112 is provided with an external thread, and the inner wall of the locking sleeve 214 close to one end of the first connecting column 2112 is provided with an internal thread, and the internal thread cooperates with the external thread so that the locking sleeve 214 and the first connecting column 2112 can rotate relative to each other. The locking sleeve 214 and the first connecting column 2112 are threadedly matched, so that the locking sleeve 214 can be connected to the locking seat 211, and the locking sleeve 214 can rotate relative to the first connecting column 2112. Of course, in other embodiments, the locking sleeve 214 can also be rotatably connected to the first connecting column 2112 through a bearing.

[0143] The end of the locking sleeve 214 away from the first connecting column 2112 is set as a stepped hole 2142, the end of the stepped hole 2142 close to the internal thread is set as a hole with a larger inner diameter, and the end away from the internal thread is set as a hole with a smaller inner diameter. The inner diameter of the hole with the smaller inner diameter is greater than the outer diameter of the first locking rod 2121. After the locking sleeve 214 is threadedly connected with the first connecting column 2112, the first locking rod 2121 is inserted into the hole with the smaller inner diameter, the hole with the larger inner diameter and the first connecting hole 2113 in turn, and then extends out of the first seat body 2111 to be connected to the first locking hole 2211 on the second seat body 223.

[0144] Specifically, the first locking rod assembly 212 also includes a locking rod spring 2122, which is sleeved on the outside of the first locking rod 2121. A first limiting ring 21212 is provided at one end of the first locking rod 2121 away from the connection with the locking plate 221. One end of the locking rod spring 2122 abuts against the end face of the first connecting column 2112, and the other end abuts against the first limiting ring 21212. When the first locking rod 2121 passes through the first connection hole 2113 and extends out of the first seat body 2111 to connect with the locking plate 221, the locking rod spring 2122 is compressed; when the locking sleeve 214 rotates counterclockwise by 120°, the threaded length of the locking sleeve 214 and the first connection column 2112 is shortened, the first limiting column 2131 is disengaged from the extending limiting groove 21211, the first locking rod 2121 moves away from the first seat body 2111 along with the locking sleeve 214, and the compression amount of the locking rod spring 2122 is reduced. When the second seat body 223 abuts against the first seat body 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, and alleviates the collision force between the second seat body 223 and the first seat body 2111 during the process of the first locking rod 2121 driving the second seat body 223 to move closer to the first seat body 2111, thereby avoiding collision damage.

[0145] The end of the first limiting ring 21212 away from the first locking rod 2121 is further provided with a rubber sleeve 21214, and the rubber sleeve 21214 is engaged with a clamping joint 21215 provided on one side of the first limiting ring 21212. The rubber sleeve 21214 is provided to prevent the end of the first locking rod 2121 away from the second locking body 22 from colliding with the display module 4 and causing damage to the display module 4 when the first locking rod 2121 drives the second locking body 22 to move toward the locking seat 211.

[0146] In one embodiment, a gap is left between the first limiting hole 21111 and the first connecting column 2112, and the gap is located at an end away from the first seat body 2111. The locking sleeve 214 extends into the gap to cooperate with the pressing piece 2133. The locking sleeve 214 is rotated to extend and retract the first limiting column 2131. The locking sleeve 214 applies a force to the pressing piece 2133 to achieve the extension and retraction of the first limiting column 2131.

[0147] Specifically, the outer circumference of the locking sleeve 214 is provided with a vertical section 2141. When the first limiting column 2131 is extended to cooperate with the extended limiting groove 21211, the pressing piece 2133 abuts against the vertical section 2141. When the locking sleeve 214 is rotated, the pressing piece 2133 abuts against the outer circumference of the locking sleeve 214, so that the first limiting column 2131 can be contracted and disengaged from the extended limiting groove 21211. Since the distance from the vertical section 2141 to the axis of the locking sleeve 214 is less than the radius of the locking sleeve 214, when the locking sleeve 214 is extended along the vertical section 2141, the locking sleeve 214 can be disengaged from the extended limiting groove 21211. Figure 6 As shown, the locking sleeve 214 is rotated 120° counterclockwise, and moves away from the first seat body 2111. When the clamping plate 2133 is converted from abutting against the vertical section 2141 to abutting against the outer periphery of the locking sleeve 214, the clamping plate 2133 drives the first limiting column 2131 to move away from the first connecting column 2112, compressing the locking rod spring 2122, so that the first limiting column 2131 is disengaged from the protruding limiting groove 21211, so that the first locking rod 2121 can drive the second lock body 22 to move along the axial direction of the first connecting hole 2113 toward the first seat body 2111, until the second seat body 223 abuts against the first seat body 2111, thereby locking the two adjacent box frames 1.

[0148] In one embodiment, a locking limit groove 21213 is further provided on the outer circumference of the first locking rod 2121, the depth of the locking limit groove 21213 is less than the depth of the extension limit groove 21211, and the locking limit groove 21213 extends along the length direction of the first locking rod 2121, and the extension limit groove 21211 is provided at the end of the locking limit groove 21213 away from the connection between the first locking rod 2121 and the locking plate 221. The locking limit groove 21213 is provided to limit the distance that the first locking rod 2121 drives the second lock body 22 to move axially along the first connecting hole 2113 after the first limiting column 2131 is disengaged from the extension limit groove 21211.

[0149] In one embodiment, a first operating handle 215 is provided on the outer periphery of the locking sleeve 214, and the locking sleeve 214 is rotated by the first operating handle 215. By providing the first operating handle 215, it is more convenient for the operator to rotate the locking sleeve 214, making the locking and unlocking operations more labor-saving.

[0150] In one embodiment, 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 holds the first operating handle 215 and rotates it toward the side close to the unlocking mark 2152 to achieve unlocking; and holds the first operating handle 215 and rotates it toward the side close to the locking mark 2151 to achieve locking. By providing the locking mark 2151 and the unlocking mark 2152, the operator can more intuitively see the rotation direction of the first operating handle 215, and the operation is more convenient.

[0151] Specifically, the locking mark 2151 is set as a locked lock, and the unlocking mark 2152 is set as an open lock, and they are distinguished by different colors to facilitate operators to distinguish more intuitively.

[0152] Furthermore, if Figure 7-10 As shown, the arc lock mechanism includes an arc lock seat 31 and a latch lock assembly 32. The latch lock assembly 32 is arranged on one side of the arc lock seat 31, and the second locking rod assembly 39 cooperates with the latch lock assembly 32 to lock.

[0153] The arc lock mechanism provided in this embodiment also includes an arc lock slider 33, a fixed pressure block 36 and an angle adjustment component. A first slide groove 3111 extending in the circumferential direction is provided in the arc lock seat 31, and the arc lock slider 33 is slidably arranged in the first slide groove 3111, and the two ends of the first slide groove 3111 pass through the two side walls of the arc lock seat 31. A latch lock component 32 is provided on one side of the arc lock slider 33, so that the arc lock slider 33 slides in the first slide groove 3111, which can drive the latch lock component 32 to slide, so as to change the angle of the latch lock component 32, and then change the splicing angle of the two display screens. A first mounting hole 331 with a center line extending in the radial direction is provided on the arc lock slider 33, and the fixed pressure block 36 is telescopically arranged in 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 disposed at one end of the angle adjustment knob 34. The connecting rod 35 passes through the fixed pressure block 36 and is rotatably connected to the arc lock slider 33. The mating end surfaces of the fixed pressure block 36 and the angle adjustment knob 34 are provided with an angle locking position and an angle unlocking position. By rotating the angle adjustment knob 34, the angle adjustment knob 34 can be selectively mated with the angle locking position or the angle unlocking position. The fixed pressure block 36 can be fixed or released with the arc lock seat 31. When the angle adjustment knob 34 is mated with the angle locking position on the fixed pressure block 36, the fixed pressure block 36 moves toward the direction close to the arc lock slider 33 and shrinks into the first mounting hole 331. The fixed pressure block 36 can be fixed with the arc lock seat 31, thereby fixing the angle of the arc lock slider 33. When adjusting the angle, the angle adjustment knob 34 is turned, and the angle adjustment knob 34 cooperates with the angle unlocking position on the fixed pressing block 36, and the fixed pressing block 36 extends out of the first mounting hole 331 and moves away from the arc lock slider 33, thereby releasing the fixed pressing block 36 from the arc lock seat 31. At this time, the arc lock slider 33 is driven by the angle adjustment knob 34 to move along the first slide groove 3111, so that the angle of the arc lock slider 33 can be adjusted, and then the angle of the latch lock assembly 32 can be adjusted to achieve the adjustment of the splicing angle of two adjacent box frames 1.

[0154] When the arc lock device 3 adjusts the angle of the arc lock slider 33, it only needs to rotate the angle adjustment knob 34 to unlock the arc lock slider 33; then the angle can be adjusted by driving the arc lock slider 33 to move along the first slide groove 3111 through the angle adjustment knob 34; after the angle is adjusted, the angle adjustment knob 34 is rotated in the opposite direction, and the fixed pressure block 36 can be fixed to the arc lock seat 31 to fix the angle of the arc lock slider 33; the operation is simple and the angle adjustment efficiency is improved.

[0155] like Fig.11As shown, the fixed pressure block 36 includes a pressure head 361 and a first sleeve 362. The first sleeve 362 is arranged at one end of the pressure head 361, 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 passing through the pressure head 361. The top of the arc lock seat 31 is provided with a first avoidance groove 3121 extending along the extension direction of the first slide groove 3111. The pressure head 361 is arranged 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 avoidance groove 3121, and the connecting rod 35 passes through the through hole 3621 and enters the first mounting hole 331 to be rotatably connected with the arc lock slider 33. The setting of this structure utilizes the rotation of the angle adjustment knob 34, which can enable the fixed pressure block 36 to fix the arc lock slider 33 and the arc lock seat 31, and also enable the fixed pressure block 36 to release the arc lock slider 33 and the arc lock seat 31. There is no need to disassemble and install screws when adjusting the angle, thereby improving the angle adjustment efficiency.

[0156] Specifically, the first sleeve 362 is telescopically arranged in the first mounting hole 331 through the first spring 37; the first mounting hole 331 is set as a stepped hole, the first spring 37 is sleeved on the outer periphery of the connecting rod 35, and one end of the first spring 37 abuts against one end of the first sleeve 362 away from the pressure head 361, and the other end abuts against the stepped surface of the stepped hole. When the fixed pressure block 36 is subjected to the pressure of the angle adjustment knob 34, the first spring 37 is compressed, and the pressure head 361 moves toward the direction close to the arc lock seat 31 and is fixed to the top of the arc lock seat 31. When the force of the angle adjustment knob 34 on the fixed pressure block 36 is relaxed, under the elastic force of the first spring 37, the pressure head 361 moves toward the direction away from the arc lock seat 31 and is released from the top of the arc lock seat 31.

[0157] The stepped hole is set through the arc lock slider 33, and a threaded hole 351 is set at one end of the connecting rod 35 away from the angle adjustment knob 34. The limit screw 38 extends from the small hole of the stepped hole and is screwed with the threaded hole 351. The connecting rod 35 can rotate relative to the small hole of the stepped hole. The limit head 21311 of the limit screw 38 is located at the outer end of the small hole of the stepped hole, which is used to limit the axial movement of the angle adjustment component along the first mounting hole 331, so as to realize the rotation connection between the angle adjustment component and the arc lock slider 33.

[0158] Of course, in other embodiments, a bearing may be provided in the small hole of the stepped hole, and the connecting rod 35 and the inner hole of the bearing may be interference fit, so that the connecting rod 35 can rotate relative to the first mounting hole 331 .

[0159] Along the extension direction of the first avoidance groove 3121, both sides of the outside of the first avoidance groove 3121 are provided with first pressing teeth 3122, and one end of the pressure head 361 close to the first sleeve 362 is provided with second pressing teeth 3611. The first pressing teeth 3122 and the second pressing teeth 3611 cooperate to fix the fixed pressure block 36 to the arc lock seat 31. When the fixed pressure block 36 is subjected to the force of the angle adjustment knob 34 and the first sleeve 362 shrinks to the first mounting hole 331, the second pressing teeth 3611 on the pressure head 361 can be engaged and fixed with the corresponding first pressing teeth 3122. When the force on the fixed pressure block 36 is relaxed, under the elastic force of the first spring 37, the pressure head 361 moves in a direction away from the arc lock slider 33, so that the second pressing teeth 3611 and the first pressing teeth 3122 are disengaged. It should be noted that the number of the first pressing teeth 3122 is much greater than the number of the second pressing teeth 3611. The second pressing teeth 3611 cooperate with the corresponding number of the first pressing teeth 3122 to ensure the stability of the fixation. When the angle adjustment knob 34 drives the arc lock slider 33 to move the adjustment angle, the second pressing teeth 3611 cooperate with another part of the first pressing teeth 3122.

[0160] Of course, in other embodiments, the fixed pressing block 36 and the arc locking seat 31 can also be fixed by means of a slot and a block.

[0161] Furthermore, the arc lock slider 33 is also provided with a second positioning bead 332, which is provided on both sides of the first mounting hole 331. Along the extension direction of the first avoidance groove 3121, a plurality of slider positioning holes 3123 are provided at intervals on both sides of the first avoidance groove 3121, and the second positioning bead 332 can selectively cooperate with one of the slider positioning holes 3123. After the arc lock slider 33 moves to a specified angle, the second positioning bead 332 cooperates with the slider positioning hole 3123 at the corresponding angle position to achieve precise positioning and ensure the angle adjustment accuracy.

[0162] like Fig.12 and Fig.13 As shown, the arc lock seat 31 includes a third seat body 311 and an upper cover 312, the third seat body 311 and the upper cover 312 are detachably connected by a first screw, a first slide groove 3111 is provided in the third seat body 311, after the arc lock slider 33 is arranged in the first slide groove 3111, the upper cover 312 and the third seat body 311 are connected by the first screw, so as to facilitate the installation of the arc lock slider 33. The first avoidance groove 3121 is provided on the upper cover 312, the first pressing tooth 3122 is provided on the outer wall of the upper cover 312, and the slider positioning hole 3123 is provided on the inner wall of the upper cover 312.

[0163] like Fig.14As shown, the angle adjustment assembly provided in this embodiment includes a first locking plane 3612 at the angle locking position and a first unlocking plane 3613 at the angle unlocking position. The height of the first unlocking plane 3613 is lower than the first locking plane 3612, and two first locking planes 3612 are provided, and the first unlocking plane 3613 is located between the two first locking planes 3612. Since the angle adjustment assembly and the arc lock slider 33 are fixed in the axial position, that is, the angle adjustment knob 34 will not move in the direction close to 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 in the direction close to the upper cover 312, compressing the first spring 37, and the second pressing teeth 3611 on the pressure head 361 can be matched and fixed with the first pressing teeth 3122 at the corresponding position on the upper cover 312, so as to fix the angle of the arc lock slider 33. When the angle adjustment knob 34 rotates to the first unlocking plane 3613, the height of the first unlocking plane 3613 is lower than the first locking plane 3612, and the pressure head 361 will be displaced toward the angle adjustment knob 34 under the elastic restoring force of the first spring 37 until the angle adjustment knob 34 abuts against the first unlocking plane 3613. The angle adjustment knob 34 rotates 120° from the first locking plane 3612 to the first unlocking plane 3613, and the first locking plane 3612 with a higher height is set on both sides of the first unlocking plane 3613, which will not affect the abutment of the angle adjustment knob 34 with the first unlocking plane 3613 with a lower height.

[0164] Furthermore, a limiting block 3614 is provided at one end of the first locking plane 3612, and the limiting blocks 3614 of the two first locking planes 3612 are arranged diagonally. The limiting block 3614 is used to limit the rotation angle of the angle adjustment knob 34 to ensure the stability of the angle when the arc lock slider 33 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 arranged between the two first locking planes 3612, and the heights of the two first locking planes 3612 are higher than the first unlocking plane 3613, there is no need to set a limiting structure 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.

[0165] Furthermore, 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 slopes 3615 makes the angle adjustment knob 34 smoother and more stable during the rotation process between the first locking plane 3612 and the first unlocking plane 3613.

[0166] In order to ensure the accuracy of the rotation position of the angle adjustment knob 34, the mating surface of the angle adjustment knob 34 and the fixed pressure block 36 is provided with a first positioning bead 341, 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 cooperate with 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 means that the angle adjustment knob 34 is rotated into place, 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 when the first positioning bead 341 slides into the locking positioning hole 36121, it indicates that the angle adjustment knob 34 is rotated into place, ensuring the accuracy of the locking position of the angle adjustment knob 34 and the accuracy of the angle of the arc lock slider 33.

[0167] It should be noted that the first positioning bead 341 and the second positioning bead 332 are also called ball plungers or spring plungers, and are a type of load device composed of a housing, a spring, a ball or a column.

[0168] like Fig.10 , Fig.15 and Fig.19 As shown, the latch lock assembly 32 includes a latch lock piece 321, and a second lock hole 3211 is provided on the latch lock piece 321. 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 arranged 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. One end of the second lock rod 391 can be locked with the second lock hole 3211, and the other end is provided with a locking handle 393. The second lock rod 391 is rotated by the locking handle 393, so that the second lock rod 391 can be locked with the second lock hole 3211. A second slide groove 333 extending in the radial direction is provided on one side of the arc lock slider 33. The latch lock piece 321 is telescopically arranged in the second slide groove 333, so that the latch lock piece 321 can be telescopic along the radial direction of the arc lock slider 33.

[0169] Specifically, the latch lock assembly 32 further includes a second spring 324, the latch lock piece 321 is set to be L-shaped, the long arm of the L-shape extends into the second slide slot 333, and the short arm is located outside the second slide slot 333, forming a handle 3212 of the latch lock piece 321. The second spring 324 is located between the bottom of the second slide slot 333 and the long arm of the L-shape, and the second lock hole 3211 includes a first through hole 32111 and a clamping hole 32112 that are interconnected. The diameter of the clamping hole 32112 is smaller than the diameter of the first through hole 32111, and the clamping hole 32112 is arranged close to the center of the arc lock slider 33. When the second lock rod 391 is inserted into the first through hole 32111, the latch lock piece 321 is clamped into the clamping hole 32112 under the elastic force of the second spring 324, and is in a locked state at this time. When unlocking, the handle 3212 is pressed downward to compress the second spring 324, and the second locking rod 391 is disengaged from the locking hole 32112, thereby achieving unlocking.

[0170] In this embodiment, an extension portion 334 extending toward the center of the circle is provided at one end of the arc lock slider 33, and the inner side and top of the extension portion 334 are set as openings. The latch 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 set in an L shape, the L-shaped lock plate side plate 322 and the outer side wall of the extension portion 334 enclose a second slide groove 333, the lock plate cover plate 323 is covered on the top of the second slide groove 333, the width of the long arm of the L-shaped latch lock plate 321 near the short arm is smaller, and the lock plate cover plate 323 is provided with a long avoidance hole matching the width of the long arm of the L-shaped latch 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 portion 334 are arranged opposite to each other, and both are provided with avoidance holes 3341 for avoiding the second lock rod 391. Such a configuration facilitates the installation of the latch lock piece 321 and the second spring 324 .

[0171] like Fig.16 As shown, in order to ensure the accuracy of angle adjustment, angle scale lines 3124 are further provided on both sides of the first avoidance groove 3121, and alignment blocks 3616 are provided on opposite sides of the pressure head 361. The alignment blocks 3616 are provided with a tip. When the angle adjustment knob 34 abuts against the first unlocking plane 3613 and the arc lock slider 33 is unlocked, the arc lock slider 33 is driven to move in the first slide groove 3111 by the angle adjustment knob 34, and stops moving when the tip of the alignment block 3616 is aligned with the specified angle on the angle scale lines 3124. Then, the angle adjustment knob 34 is rotated so that the angle adjustment knob 34 abuts against the first locking plane 3612, and the angle adjustment of the latch lock assembly 32 is completed.

[0172] For example, Figure 8As shown, at this time, the locking angle of the arc locking device 3 is 0°, that is, the splicing angle of the two adjacent display screens connected by the arc locking device 3 is 0°, which is horizontal splicing. Fig.17 As shown, at this time, the locking angle of the arc lock device 3 is -10°, that is, the splicing angle of two adjacent display screens connected by the arc lock device 3 is -10°; Fig.18 As shown, at this time, the locking angle of the arc locking device 3 is 15°, that is, the splicing angle of two adjacent display screens connected by the arc locking device 3 is 15°.

[0173] like Fig.19 As shown, specifically, mounting frames 12 are respectively provided on opposite sides of the box frame 1, the arc lock seat 31 of the arc lock mechanism is fixed on the mounting frame 12 on one side, and the locking rod mounting plate 392 of the second locking rod assembly 39 is connected to the mounting frame 12 on the other side.

[0174] The arc lock mechanism of one of the two adjacent box frames 1 is connected to the second locking rod assembly 39 of the other to achieve locking of the two box frames 1. At the same time, the arc lock device 3 can also adjust the splicing angle of the two box frames 1, and the operation is convenient, which improves the angle adjustment efficiency.

[0175] Furthermore, if Figure 20-Figure 22 As shown, the display screen also includes a display module 4, which is arranged on the front side of the box frame 1. The display module 4 includes an LED light board 42 and a first bottom shell 41, the LED light board 42 is arranged on the front side of the first bottom shell 41, and the LED light board 42 is arranged with lamp beads.

[0176] In order to protect the lamp beads at the edge of the LED lamp board 42, avoid falling off or being damaged by a slight collision or external force, which would affect the product quality. Fig.21 As shown, this embodiment also provides a box frame 1, which is applied to the above-mentioned display screen. The box frame 1 includes a frame body 13 and a protection mechanism 14. The protection mechanism 14 is arranged at both ends of the frame body 13 along the first direction, so as to protect the lamp beads at the edge of the LED light board 42. The protection mechanism 14 is telescopically arranged on the frame body 13. When the display screen is stacked and spliced, the protection mechanisms 14 on two adjacent frame bodies 13 abut against each other, so that the two protection mechanisms 14 can automatically shrink to be flush with the ends of the frame body 13, and will not affect the splicing of the display screen. When the display screen is placed alone, the protection mechanism 14 automatically extends to the front side of the display module 4 to protect the lamp beads at the edge of the LED light board 42.

[0177] The protection mechanism 14 includes a protection plate 141, a connecting frame 142 and a first elastic member 143. The protection plate 141 extends along the length direction of the end of the frame body 13 to achieve full coverage of the edge lamp beads of the display module 4. Figure 21-25As shown, the connecting frame 142 is arranged on one side of the protective plate 141, and a accommodating cavity 131 is arranged on the frame body 13. The first elastic member 143 is arranged in the accommodating cavity 131 and is connected to the connecting frame 142. The extension and contraction direction of the first elastic member 143 is arranged 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 an inclined direction. When the first elastic member 143 extends and drives the connecting frame 142 to extend out of the accommodating cavity 131, the protective plate 141 moves toward the front side and moves away from the frame body 13. When the connecting frame 142 is retracted into the accommodating cavity 131 under force to compress the first elastic member 143, the protective plate 141 moves toward the rear side and moves toward the frame body 13, thereby achieving effective protection of the display module 4 when the protective plate 141 is extended, and can be stored at the end of the frame body 13 when retracted, without affecting the stacking and splicing of the box frame 1. The connecting frame 142 can be retracted into the accommodating cavity 131 and compress the first elastic member 143 under force; the first elastic member 143 can drive the connecting frame 142 to extend out of the accommodating cavity 131, so that the connecting frame 142 drives the protection plate 141 to extend to the front side of the display module 4. When the box frames 1 are stacked, the protection mechanisms 14 of two adjacent box frames 1 abut against each other, so that the connecting frame 142 and the protection plate 141 automatically retract; when the two adjacent box frames 1 are separated, the connecting frame 142 is tilted and pushed out under the elastic restoring force of the first elastic member 143, so that the protection plate 141 automatically extends out to protect the display module 4; no manual operation is required by the installer, which improves the installation efficiency.

[0178] The accommodating cavity 131 is disposed at the rear side of the frame body 13 , so that the frame body 13 is compatible with the base function of the protection mechanism 14 , reducing accessories and lowering costs; at the same time, the connection of the protection plate 141 is made more stable and reliable.

[0179] Furthermore, an accommodating groove 411 is provided at the end of the first bottom shell 41, and the protection plate 141 can be retracted into the accommodating groove 411. In order to ensure that the protection plate 141 can be flush with the end of the display screen when retracted, the accommodating groove 411 is provided at the end of the first bottom shell 41, and when the protection mechanisms 14 abut against each other, the connecting frame 142 compresses the first elastic member 143 and retracts it into the accommodating cavity 131, and the protection plate 141 retracts toward the rear side and moves downward into the accommodating groove 411, so as not to affect the splicing of the adjacent box frames 1.

[0180] Specifically, two connecting frames 142 are provided, and the two connecting frames 142 are arranged at two ends of the same side of the protection plate 141. The protection plate 141 is connected by the two connecting frames 142 to ensure the stability when the protection plate 141 is driven to extend and retract.

[0181] In one embodiment, the bottom surface of the accommodating cavity 131 is an inclined surface 1311, the inclined surface 1311 forms a preset angle with the protective plate 141, and 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 arranged in the first groove 13111, and the bottom surface of the connecting frame 142 is provided with a second connecting column 1421, and the second connecting column 1421 is inserted into the first elastic member 143 along a direction perpendicular to the inclined surface 1311. The first elastic member 143 is a spring, and the second connecting column 1421 is inserted between the coils of the spring. When the connecting frame 142 is subjected to a resisting force, the connecting frame 142 drives the second connecting column 1421 to compress the spring, and the connecting frame 142 retracts into the accommodating cavity 131; when the resisting force on the connecting frame 142 is withdrawn, under the action of the elastic restoring force of the spring, the connecting frame 142 is driven to extend out of the accommodating cavity 131 through the second connecting column 1421, thereby driving the protective plate 141 to move in a direction away from the accommodating groove 411 to the front side of the display module 4.

[0182] Exemplarily, the preset 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 of the first elastic member 143 on the connecting frame 142 is inclined upward. Of course, in other embodiments, the preset angle can also be 30° or 60°, which is specifically designed according to the moving distance of the protective plate 141.

[0183] In one embodiment, a guide groove 1422 whose center line is parallel to the inclined surface 1311 is provided on the connecting frame 142, and a guide member is provided in the accommodating cavity 131, and the guide member cooperates with the guide groove 1422 to provide guidance for the movement of the protection plate 141. When the guide member abuts against one end of the guide groove 1422, the protection plate 141 extends to the first limit position, and when the guide member abuts against the other end of the guide groove 1422, the protection plate 141 retracts to the second limit position. By providing a guide member, the limit position of the connecting frame 142 during extension and retraction is limited to ensure that the protection plate 141 extends to the limit position of the front side of the display module 4, and retracts to the limit position in the accommodating groove 411. The guide groove 1422 is provided on the side plate of the connecting frame 142.

[0184] Furthermore, two guide members are provided at intervals, one of which can abut against one end of the guide slot 1422, and the other can abut against the other end of the guide slot 1422. The two guide members respectively limit the first limit position when the connecting frame 142 is extended and the second limit position when it is retracted, and provide a guiding effect on the movement of the connecting frame 142, so that the connecting frame 142 moves smoothly along the inclined surface 1311 during the movement without deflection.

[0185] In one embodiment, both adjacent sides of the accommodating cavity 131 are set as openings, wherein one opening is the telescopic entrance of the connecting frame 142, and the other opening is the installation entrance of the connecting frame 142, and the installation entrance is closed by the baffle 133; after the guide member passes through the guide groove 1422, one end is connected to the baffle 133, and the other end is connected to the side wall of the accommodating cavity 131 opposite to the baffle 133. The accommodating cavity 131 is directly opened on the frame body 13, and is compatible with the fixing function of the protection mechanism 14. In order to facilitate the installation and telescopic of the connecting frame 142, the adjacent two sides of the accommodating cavity 131 are set as openings. When installing, the connecting frame 142 enters the accommodating cavity 131 from the installation entrance. The baffle 133 is circumferentially provided with a second connecting hole 1331, and the fixing screw 135 passes through the second connecting hole 1331 and is fixedly connected to the circumference of the installation entrance of the accommodating cavity 131. The guide member is configured as a guide screw 132 , and a second through hole 1332 is provided on the baffle 133 . The guide screw 132 passes through the second through hole 1332 and the guide groove 1422 and is then screwed to the side wall of the accommodating cavity 131 opposite to the baffle 133 , and the head of the guide screw 132 is clamped on the baffle 133 .

[0186] After the protection plate 141 extends out of the front side of the display module 4, in order to avoid the installation personnel accidentally touching the protection plate 141 and causing it to retract, it is impossible to effectively protect the lamp beads. The protection mechanism 14 also includes a second limit component 144, which is telescopically arranged on the frame body 13. The protection plate 141 is provided with a second limit hole 1411. The second limit component 144 is used to cooperate with the second limit hole 1411 to fix the protection plate 141 when the protection plate 141 extends to the front side of the display module 4. The second limit component 144 is telescopically arranged. Only when the protection plate 141 extends to the front side of the display module 4, the second limit component 144 can extend and cooperate with the second limit hole 1411 to fix the protection plate 141, and prevent the protection plate 141 from being accidentally touched and causing the protection plate 141 to retract; when the protection plate 141 retracts into the accommodating groove 411, the second limit component 144 retracts without affecting the movement of the protection plate 141 to the rear side.

[0187] In one embodiment, the frame body 13 is provided with a second mounting hole 134 whose center line is perpendicular to the protection plate 141, and the second limiting assembly 144 is arranged in the second mounting hole 134. The second limiting assembly 144 includes a second limiting column 1441 and a second limiting spring 1442, the second limiting column 1441 includes a limiting end and a second column 14411, the outer diameter of the limiting end is greater than the outer diameter of the second column 14411, the second limiting spring 1442 is sleeved outside the second column 14411, one end of the second limiting spring 1442 is connected to the second mounting hole 134, and the other end is abutted against the limiting end, and the end of the limiting end away from the second column 14411 can abut against the second limiting hole 1411. When the protection mechanisms 14 on two adjacent box frames 1 abut against each other, the second limiting column 1441 can be retracted into the second mounting hole 134 by the abutting pressure and disengage from the second limiting hole 1411; when the external force on the second limiting column 1441 is removed, that is, the two adjacent box frames 1 are separated, the second limiting column 1441 extends out of the second mounting hole 134 under the action of the elastic restoring force of the second limiting spring 1442 to cooperate with the second limiting hole 1411 to fix the protection plate 141.

[0188] The second mounting hole 134 is configured as a stepped hole, which includes a first hole, a second hole, and a third hole whose diameters increase successively. The second limiting spring 1442 is disposed in the second hole, and one end of the second limiting spring 1442 abuts against the connection between the second hole and the first hole, and the other end abuts against the limiting end, so that the limiting end slides in the third hole.

[0189] In one embodiment, the limiting end includes a limiting portion 14412 and a pressing portion 14413. The limiting portion 14412 is disposed between the second column 14411 and the pressing portion 14413, and the outer diameter of the limiting portion 14412 is greater than the outer diameter of the pressing portion 14413. The limiting portion 14412 can abut against the second limiting hole 1411. The limiting portion 14412 can be disengaged from the second limiting hole 1411 by pressing the second limiting column 14413. The protection plate 141 is also provided with a second avoidance groove 1412, which extends along the moving direction of the protection plate 141. When the box frame 1 is stacked, the two pressing parts 14413 abut against each other, so that the second limiting column 1441 retracts into the second mounting hole 134, and by providing the second avoidance groove 1412, when the protection plate 141 retracts with the connecting frame 142, the pressing part 14413 is located in the second avoidance groove 1412, and will not limit the retraction of the protection plate 141. The second limiting hole 1411 is provided on the side of the second avoidance groove 1412 close to the second mounting hole 134, and the second limiting hole 1411 is located on the side of the second avoidance groove 1412 close to the connecting frame 142. When the protection plate 141 extends to the first limit position on the front side of the display module 4, the step surface between the limiting part 14412 and the pressing part 14413 abuts against the bottom of the second limiting hole 1411 to fix the protection plate 141, so that the protection plate 141 will not retract when it is subjected to the accidental touch force of the installer.

[0190] Furthermore, if Figure 26-Figure 29 As shown, the box frame 1 of this embodiment is a frame structure, in which a plurality of display module installation positions are arranged, and a display module 4 is installed on each display module installation position, which is suitable for outdoor large display screens.

[0191] A plurality of magnets 15 are arranged at intervals in the circumferential direction on the front side of the display module installation position. Accordingly, a plurality of iron sheets 414 magnetically connected to the magnets 15 are arranged in the circumferential direction of the display module 4 to magnetically connect the display module 4 to the display module installation position.

[0192] In order to prevent the display module 4 from accidentally falling due to the disappearance of the magnetism of the magnet 15, the display module installation position is further provided with a snap-fit ​​position 16 for snapping with the display module 4 to achieve a mechanical connection to prevent the display module 4 from accidentally falling.

[0193] like Figure 30-Figure 32As shown, this embodiment provides a display module 4, which is applied to the above-mentioned display screen. The display module 4 also includes a back cover 44 and a locking device 45. The LED light board 42 is installed on the front side of the first bottom shell 41, and a maintenance hole 43 is provided through the LED light board 42 and the first bottom shell 41. The back cover 44 is connected to the back side of the first bottom shell 41, and the area of ​​the back cover 44 is smaller than the area of ​​the first bottom shell 41. It is fixed to the center position of the first bottom shell 41 by a first screw 47. An iron sheet 414 for magnetically connecting with the magnet 15 of the box frame 1 is provided in the circumference of the first bottom shell 41. The locking device 45 is provided between the first bottom shell 41 and the back cover 44. The locking device 45 cooperates with the clamping position 16 on the box frame 1 to realize the mechanical connection between the display module 4 and the box frame 1 to prevent the display module 4 from accidentally falling.

[0194] 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 both matched 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 in a direction close to 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 both provided with a clamping part, and the back cover 44 is provided with an avoidance opening corresponding to the clamping part. When the first locking member 452 and the second locking member 453 move in a direction away from each other, the clamping part of the ends of the first locking member 452 and the second locking member 453 that are away from each other can pass through the avoidance opening on the back cover 44 and be clamped with the clamping position 16 on the box frame 1, thereby locking the display module 4 with the box frame 1. When the first locking member 452 and the second locking member 453 move toward each other, the engaging portion and the engaging position 16 are disengaged, thereby unlocking the display module 4 and the box frame 1 .

[0195] The maintenance hole 43 is set corresponding to the maintenance part 4512. The maintenance ejector pin 46 passes through the maintenance hole 43 to apply force to the maintenance part 4512, which can rotate the disassembly shaft 451, thereby driving the first locking member 452 and the second locking member 453 to move toward or away from each other, thereby achieving rapid unlocking and locking. The maintenance ejector pin 46 only needs to apply a force perpendicular to the direction of the LED light board 42 to the maintenance part 4512, and does not need to apply torque. Therefore, the aperture of the maintenance hole 43 does not need to be too large, and is suitable for display modules 4 with smaller pixel pitches. The display module 4 can realize front maintenance of display modules 4 with smaller pixel pitches, thereby improving the disassembly and assembly efficiency of the display screen.

[0196] In one embodiment, the transmission portion includes a gear structure 4511 arranged on the outer periphery of the disassembly and assembly shaft 451, a first rack structure 4522 is provided at one end of the first locking member 452 close to the second locking member 453, and a second rack structure 4532 is provided at one end of the second locking member 453 close to the first locking member 452, the first rack structure 4522 is located on a side of the gear structure 4511 close to the back cover 44, and is meshed with the gear structure 4511; the second rack structure 4532 is located on a side of the gear structure 4511 close to the first bottom shell 41, and is meshed with the gear structure 4511. When the disassembly shaft 451 rotates, the gear structure 4511 rotates. Since the first rack structure 4522 is located at the rear side of the gear structure 4511 and the second rack structure 4532 is located at the front side 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, thereby driving the first locking member 452 and the second locking member 453 to move away from or close to each other, thereby achieving the engagement or disengagement of the engaging portion and the engaging position 16, so as to achieve the locking or unlocking of the display module 4 and the box frame 1. When the locking device 45 is used to lock or unlock the display module 4, it only needs to rotate the disassembly shaft 451, which is convenient to operate and improves the disassembly efficiency of the display module 4.

[0197] Of course, in other embodiments, the transmission part can also be configured as two coil springs wound around the disassembly shaft 451 and extending in opposite directions, wherein the other end of one of the two coil springs is connected to the first locking member 452, and the other end of the other coil spring is connected to the second locking member 453, and the first locking member 452 and the second locking member 453 can be moved in a direction approaching or away from each other by rotating the disassembly shaft 451. Alternatively, the first locking member 452 and the second locking member 453 can be moved in a direction approaching or away from each other by gear transmission, cam transmission, connecting rod transmission and other structures.

[0198] In one embodiment, two gear structures 4511, first rack structures 4522, and second rack structures 4532 are respectively provided, and the maintenance part 4512 is arranged between the two gear structures 4511, so as to ensure the stability of the first locking member 452 and the second locking member 453 during movement, and ensure that the clamping part can be smoothly clamped or disengaged with the clamping position 16.

[0199] In one embodiment, the locking device 45 further includes a second operating handle 454, the open end of the second operating handle 454 is connected to the disassembly shaft 451, and the two gear structures 4511 are both located outside the open end of the second operating handle 454. By rotating the second operating handle 454 to drive the disassembly shaft 451 to rotate, it is more convenient for the operator to manually apply force, so that the operator can also disassemble the display module 4 at the rear side of the display module 4, that is, the display module 4 can be maintained from the front and from the back.

[0200] Furthermore, a third avoidance groove 443 is provided on the rear cover 44 corresponding to the second operating handle 454. With such a configuration, when performing maintenance, the operator can hold the second operating handle 454 through the third avoidance groove 443 to rotate the disassembly shaft 451 from the rear side of the display module 4 without removing the rear cover 44, thereby further improving the disassembly efficiency.

[0201] The shape of the third avoidance groove 443 is adapted to the shape of the second operating handle 454, and is a U-shaped groove. A second groove 444 with the same depth as the third avoidance groove 443 and connected to the bottom of the third avoidance groove 443 is arranged on opposite sides of the bottom of the U-shaped groove, so that the operator can place his hands in the two second grooves 444 to take the second operating handle 454.

[0202] Specifically, the clamping portion includes a first clamping portion 4521 and a second clamping portion 4531, the first clamping portion 4521 is arranged on the first locking member 452, and the second clamping portion 4531 is arranged on the second locking member 453. The avoidance opening includes a first avoidance opening 441 and a second avoidance opening 442, the first avoidance opening 441 and the second avoidance opening 442 are respectively arranged at opposite ends of the rear cover 44, the first clamping portion 4521 extends out of the rear cover 44 through the first avoidance opening 441 to be clamped with the clamping position 16 on one side of the box frame 1, and the second clamping portion 4531 extends out of the rear cover 44 through the second avoidance opening 442 to be clamped with the clamping position 16 on the other side of the box frame 1.

[0203] The first locking member 452 includes a first locking frame and two first base plates arranged at intervals, the first locking frame is connected to one end of the two first base plates, and the first rack structure 4522 is arranged at one end of the first base plate away from the first locking frame. The first locking frame has a certain height, and the first clamping portion 4521 extends outward from one end of the first locking frame away from the first rack structure 4522 and is located on a side of the first locking frame away from the first base plate.

[0204] The second locking member 453 includes a second locking frame and two second bottom plates arranged at intervals, the second locking frame is connected to one end of the two second bottom plates, and the second rack structure 4532 is arranged at one end of the second bottom plate away from the second locking frame. The second locking frame has a certain height, and the second clamping portion 4531 extends outward from one end of the second locking frame away from the second rack, and is located on a side of the second locking frame away from the second bottom plate.

[0205] During assembly, the first locking member 452 and the second locking member 453 are arranged opposite to each other, that is, the first bottom plate is located at the rear side of the disassembly shaft 451, and the second bottom plate is located at the front side of the disassembly shaft 451, so that the two gear structures 4511 on the disassembly shaft 451 located outside the second operating handle 454 can cooperate with the first rack structure 4522 and the second rack structure 4532, and will not block the maintenance part 4512 located between the two gear structures 4511, and the first locking frame and the second locking frame are respectively located on both sides of the disassembly shaft 451. In order to ensure the stability of the first locking member 452 and the second locking member 453 when moving, and the two ends will not be deflected, the side of the first locking frame away from the first bottom plate abuts against the first bottom shell 41, and the side of the second locking frame away from the second bottom plate abuts against the back cover 44.

[0206] In one embodiment, two first support blocks 413 are arranged at intervals on the first bottom shell 41 along the extension direction of the disassembly shaft 451, and a first support groove 4131 is arranged on the side of the first support block 413 away from the first bottom shell 41. Two second support blocks are arranged at intervals on the rear cover 44 along the extension direction of the disassembly shaft 451, and a second support groove is arranged 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 connected to form a support hole, and the disassembly shaft 451 is supported in the two support holes, and 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 connection 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, and does not affect the rotation of the disassembly shaft 451 driven by the second operating handle 454.

[0207] Furthermore, if Figure 31-Figure 35 As shown, two second limit rings 4513 are also provided on the disassembly and assembly shaft 451, and the two second limit rings 4513 are respectively provided on both sides of the maintenance part 4512, and the sides of the two second limit rings 4513 that are far away from each other are respectively abutted against the sides of the two support holes that are close to each other, so as to limit the axial movement of the disassembly and assembly shaft 451 when rotating, thereby preventing the maintenance part 4512 from being misaligned with the maintenance hole 43, resulting in the maintenance ejector pin 46 being unable to apply force to the maintenance part 4512 through the maintenance hole 43 to rotate the disassembly and assembly shaft 451.

[0208] In one embodiment, continue to refer to Figure 33-Figure 35 The maintenance hole 43 includes an unlocking hole 431 and a locking hole 432, which are arranged at intervals. The maintenance portion 4512 includes a second unlocking plane 45121 and a second locking plane 45122, which are arranged at intervals of a preset angle along the circumferential direction of the disassembly axis 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. The unlocking hole 431 and the locking hole 432 are arranged separately, which is more convenient for users to perform disassembly and assembly operations. Since the rotation directions of the disassembly shaft 451 are opposite when unlocking and locking, if only one maintenance hole 43 is provided to achieve both unlocking and locking, the operator also needs to identify the rotation direction of the disassembly shaft 451. However, the disassembly shaft 451 is located on the rear side of the LED light board 42. The rotation direction of the disassembly shaft 451 cannot be accurately identified only through the maintenance hole 43, which results in the wrong rotation direction of the disassembly shaft 451, leading to unlocking when locking, increasing the risk of accidental falling of the display module 4, and lowering safety.

[0209] After the maintenance ejector pin 46 passes through the unlocking hole 431, it can abut against the second unlocking plane 45121, and exert a force perpendicular to the direction of the LED lamp board 42 on the second unlocking plane 45121, so that the disassembly axis 451 can move along the unlocking hole 431. Fig.34 The clockwise rotation as shown drives the first locking member 452 and the second locking member 453 to move toward each other, thereby causing the first clamping portion 4521 and the second clamping portion 4531 to disengage from the clamping positions 16 on both sides of the box frame 1, thereby unlocking the display module 4 and the box frame 1.

[0210] After the maintenance ejector pin 46 passes through the locking hole 432, it can abut against the second locking plane 45122, and also exert a force perpendicular to the direction of the LED lamp board 42 on the second locking plane 45122, so that the disassembly axis 451 can move along the direction of the second locking plane 45122. Fig.35 The counterclockwise rotation as shown drives the first locking member 452 and the second locking member 453 to move away from each other, so that the first clamping portion 4521 extends out of the first avoidance opening 441 and is clamped with the clamping position 16 on one side of the box frame 1, and the second clamping portion 4531 extends out of the second avoidance opening 442 and is clamped with the clamping position 16 on the other side of the box frame 1, thereby achieving the locking of the display module 4 and the box frame 1.

[0211] In one embodiment, continue to refer to Fig.31 , Figure 33-Figure 35The maintenance part 4512 also includes a connecting arc surface 45123 for connecting the second unlocking plane 45121 and the second locking plane 45122, and a first limiting groove 45124 is provided at one end of the connecting arc surface 45123 close to the second unlocking plane 45121, and a second limiting groove 45125 is provided at one end of the connecting arc surface 45123 close to the second locking plane 45122; a limiting protrusion 412 is provided on one side of the first bottom shell 41 close to the disassembly and assembly axis 451, and 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 providing the first limiting groove 45124 and the second limiting groove 45125, the clockwise rotation angle of the disassembly and assembly shaft 451 is limited when unlocking, and the counterclockwise rotation angle of the disassembly and assembly shaft 451 is limited when locking, so that the disassembly and assembly shaft 451 cannot continue to rotate after rotating to the point where the first clamping portion 4521 and the second clamping portion 4531 are engaged or disengaged with the clamping position 16, thereby preventing the first clamping portion 4521 and the second clamping portion 4531 from moving too far and being damaged by the blocking force; or preventing the first rack structure 4522 and the second rack structure 4532 from being disengaged from the gear structure 4511, resulting in transmission failure.

[0212] Exemplarily, the preset angle between the second unlocking plane 45121 and the second locking plane 45122 along the circumferential direction of the disassembly axis 451 is 90°. When unlocking, the disassembly axis 451 is rotated 90° in the clockwise direction to unlock the display module 4 and the box frame 1; when locking, the disassembly axis 451 is rotated 90° in the counterclockwise direction to lock the display module 4 and the box frame 1.

[0213] In one embodiment, the maintenance hole 43 includes a first hole 4301 and a second hole 4302 which are concentrically arranged and connected. The first hole 4301 is arranged on the LED lamp board 42, and the second hole 4302 is arranged on the first bottom shell 41. The inner diameter of the first hole 4301 is equal to the outer diameter of the maintenance ejector pin 46, and the inner diameter of the second hole 4302 is greater than the inner diameter of the first hole 4301. With such an arrangement, the aperture of the first hole 4301 can be set smaller, and at the same time, when the maintenance hole 43 and the maintenance part 4512 are slightly misaligned due to processing or installation errors, the maintenance ejector pin 46 can have a certain moving space in the second hole 4302, so that the head of the maintenance ejector pin 46 can also exert force on the maintenance part 4512 to drive the disassembly shaft 451 to rotate.

[0214] Furthermore, a boss 415 abutting against the LED light board 42 is provided on one side of the first bottom shell 41 close to the LED light board 42, and the second hole 4302 is provided on the boss 415. By providing the second hole 4302 on the boss 415, the depth of the second hole 4302 can be increased, and the maintenance ejector pin 46 can be protected to prevent the maintenance ejector pin 46 from breaking when force is applied to the maintenance portion 4512.

[0215] The locking portion of the locking device 45 in the display module 4 is engaged with the locking position 16 on the box frame 1, which can fix the display module 4 on the box frame 1 to prevent the display module 4 from accidentally falling. The display module 4 can not only be maintained from behind, but also from the front through the maintenance hole 43, and is suitable for front maintenance of the display module 4 with a smaller pixel pitch, thereby improving the disassembly and maintenance efficiency of the display module 4.

[0216] Furthermore, if Figure 36-Figure 42 As shown, two clamping members 53 are provided in the control box locking device 5, and one clamping member 53 is connected to each side of the driving assembly 52 to drive the two clamping members 53 to move synchronously. By providing two clamping members 53, the two clamping members 53 are respectively clamped with different positions of the box frame 1 from both sides, which can ensure the stability of the connection between the control box body 51 and the box frame 1, and avoid the gap between the control box body 51 and the box frame 1 due to looseness of the clamping joint.

[0217] See also Fig.41 In this embodiment, the third direction is the thickness direction of the control box body 51; the two clamping members 53 extend along the first direction, and the two clamping members 53 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 settings of the two clamping members 53 are the same.

[0218] See also Figure 36-Figure 39 , the clamping member 53 is provided with a clamping end 533, the box frame 1 is provided with a clamping portion 17, and the clamping end 533 is clamped and matched with the clamping portion 17. The clamping end 533 moves with the clamping member 53, and when the clamping end 533 moves to the position of the clamping portion 17, the clamping end 533 is clamped with the clamping portion 17, thereby fixing the control box body 51 on the box frame 1. In this embodiment, the two clamping members 53 are each provided with two clamping ends 533, and the box frame 1 is provided with four clamping portions 17. Optionally, the clamping end 533 and the clamping portion 17 are both provided with guiding inclined surfaces, thereby ensuring that the clamping end 533 and the clamping portion 17 cooperate smoothly.

[0219] See also Fig.43 and Fig.44Further, the driving assembly 52 includes a main body 521 and a locking member 522. The main body 521 is rotatably connected to the control box body 51 and connected to the clamping member 53. The locking member 522 is rotatably arranged in the main body 521. The first end of the locking member 522 is connected to the main body 521 through the second elastic member 524, and the second end of the locking member 522 is clamped with the control box body 51. The second elastic member 524 can be a spring. By setting the main body 521 and arranging the locking member 522 in the main body 521, the locking member 522 is rotatably connected to the main body 521. When the locking member 522 is controlled to rotate, the first end of the locking member 522 presses the second elastic member 524 and the second end tilts up and then disengages from the control box body 51, so that the driving assembly 52 reaches an 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 sheet-shaped; the second elastic member 524 is a spring (the specifications of the spring can be: wire diameter 0.8mm, outer diameter 6mm, length 12mm).

[0220] In this embodiment, a hook 511 is provided on the control box body 51. When the second end of the locking member 522 is engaged with the hook 511, the driving 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 set on the control box body 51 through the third connecting member 56; the third connecting member 56 can be an M5×25 flat head cross screw; the control box locking device 5 also includes a rotating connecting member 526, and the locking member 522 is rotatably set on the control box body 51 through the rotating connecting member 526; the rotating connecting member 526 can be an M4×12 cross screw.

[0221] In order to enable the clamping member 53 to slide in the control box body 51 when the main body 521 rotates, the control box locking device 5 also includes a first connecting member 54, a guide hole 531 is provided on the clamping member 53, one end of the first connecting member 54 is rotatably connected to the main body 521, and the other end of the first connecting member 54 is slidably arranged in the guide hole 531, and the rotation of the main body 521 can drive the first connecting member 54 to slide in the guide hole 531. By providing the guide hole 531 and the first connecting member 54, when the main body 521 rotates, the first connecting member 54 slides in the guide hole 531.

[0222] In this embodiment, the third direction is the length direction of the guide hole 531 , and the first connecting member 54 is slidably inserted into the guide hole 531 ; the first connecting member 54 is an M4×10 threaded screw.

[0223] Optionally, the control box locking device 5 further includes a glass bead screw 57, which is inserted into the main body 521. The rotation of the main body 521 can drive the end of the glass bead screw 57 to abut against the control box body 51. By providing the glass bead screw 57, when the main body 521 rotates to a certain extent, the glass bead screw 57 is used to limit the rotation of the main body 521. In this embodiment, the nominal diameter of the glass bead screw 57 is 4 mm and the length is 10 mm. Among them, the structure, setting method and principle of the glass bead screw 57 can refer to the prior art, and will not be repeated here.

[0224] In order to limit the sliding direction of the clamping member 53 in the control box body 51, the control box locking device 5 further includes a second connecting member 55, which is connected to the control box body 51. The clamping member 53 is provided with a waist-shaped hole 532, and the second connecting member 55 is slidably arranged in the waist-shaped hole 532. By arranging the second connecting member 55 and the waist-shaped hole 532 to cooperate, when the clamping member 53 slides, the second connecting member 55 slides along the inner hole wall of the waist-shaped hole 532, thereby limiting the sliding direction of the clamping member 53.

[0225] Optionally, at least two waist-shaped holes 532 are arranged at intervals, and the second connecting members 55 are arranged one by one corresponding to the waist-shaped holes 532. In this embodiment, the first direction is the length direction of the waist-shaped holes 532, and the second connecting members 55 are inserted into the waist-shaped holes 532; three second connecting members 55 are arranged side by side at intervals along the first direction; and the second connecting members 55 are M4×14 flat head cross screws.

[0226] In order to limit the relative position of the control box body 51 and the box frame 1 during installation, the control box locking device 5 further includes a positioning member 512, and the two ends of the positioning member 512 are respectively inserted into the control box body 51 and the box frame 1. By providing the positioning member 512, the relative position of the control box body 51 and the box frame 1 can be limited to ensure the accurate installation position of the control box body 51. In this embodiment, the positioning member 512 is a positioning pin; at least two positioning members 512 are provided at intervals.

[0227] Optionally, the driving assembly 52 further includes a button 523, which is disposed outside the main body 521 and connected to the locking member 522, and is used to press and drive the locking member 522 to press against the second elastic member 524. By providing the button 523, when holding the handle with one hand, the finger presses the button 523 to control the rotation of the locking member 522, so that the driving assembly 52 reaches the unlocked state, and the finger releases the button 523, and the locking member 522 automatically resets.

[0228] In this embodiment, two locking members 522 are provided, and two buttons 523 are also provided. Each button 523 corresponds to a locking member 522, thereby driving a clamping member 53; the control box locking device 5 also includes a fastener 525, and the button 523 is fixed to the locking member 522 through the fastener 525; two fasteners 525 are provided; the fastener 525 can be a PM2.5 round head screw.

[0229] Optionally, a cylindrical protrusion 5221 is provided at the first end of the locking member 522, 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.

[0230] If Fig.43 and Fig.44 As the initial state of the control box locking device 5, the locking member 522 is engaged with the hook 511 (the driving assembly 52 is in a locked state), and the engaging end 533 of the clamping member 53 is engaged with the engaging portion 17 of the box frame 1; when the button 523 is pressed, Fig.45 and Fig.46 , the locking member 522 rotates a certain angle along the X1 direction with the rotating connecting member 526 as the center, the first end of the locking member 522 presses the second elastic member 524 against the main body 521, the second elastic member 524 is compressed, and the second end of the locking member 522 is disengaged from the hook 511 (the driving assembly 52 reaches the unlocked state), at which time the first connecting member 54 is located at the top of the guide hole 531; then the main body 521 is rotated along the Y1 direction, see Figure 47-Figure 49 As the main body 521 rotates along the Y1 direction, the first connecting member 54 slides to the bottom end of the guide hole 531. At the same time, the clamping member 53 slides in the control box body 51, and the clamping member 53 moves along the first direction toward the direction close to the hook 511, so that the clamping end 533 of the clamping member 53 is disengaged from the clamping portion 17 of the box frame 1.

[0231] The following is the specific installation and use process of the control box locking device 5:

[0232] First, the tail end of the main body 521 is passed through the control box body 51, and the main body 521 and the clamping member 53 are fixed by the first connecting member 54. Then, the main body 521 is rotatably fixed to the control box body 51 by the third connecting member 56, and the clamping member 53 is fixed to the control box body 51 by the second connecting member 55, so that the clamping member 53 can be driven to slide along the first direction in the control box body 51 when the main body 521 rotates.

[0233] Subsequently, the locking member 522 and the second elastic member 524 are installed in the main body 521 using the rotating connecting member 526, and the button 523 is fixed to the locking member 522 using the fastener 525, so that the button 523 can be pressed to drive the locking member 522 to rotate and realize rotational locking; the bead screw 57 is then fixed to the main body 521 to realize rotational limiting.

[0234] See also Fig.49 When in use, make sure that the locking piece 522 is disengaged from the hook 511 to ensure that the drive assembly 52 can rotate relative to the control box body 51 (that is, the drive assembly 52 is in an unlocked state), hold the main body 521 with one hand, and place the entire control box body 51 with a locking structure on the box frame 1, so that the two ends of the positioning piece 512 are respectively inserted into the control box body 51 and the box frame 1, and then determine the relative position of the control box body 51 and the box frame 1 to ensure installation accuracy.

[0235] After the control box body 51 is placed in place, the hand-held main body 521 is rotated along the Y2 direction. During the rotation, the clamping member 53 is driven to slide in the control box body 51, and the clamping member 53 moves along the first direction toward the direction away from the hook 511. The clamping end 533 of the clamping member 53 is engaged with the clamping part 17 of the box frame 1, thereby installing the control box body 51 on the box frame 1.

[0236] See also Fig.46 , the main body 521 is rotated in the Y2 direction so that the second end of the locking member 522 is close to the hook 511, and the hook 511 acts on the locking member 522, so that the locking member 522 rotates a certain angle in the X1 direction with the rotating connecting member 526 as the center, and the first end of the locking member 522 presses the second elastic member 524 against the main body 521, the second elastic member 524 is compressed, and the second end of the locking member 522 is tilted. Fig.44 Under the action of the second elastic member 524, the second end of the locking member 522 is tilted up and can be engaged with the hook 511 and automatically reset. At this time, the main body 521 cannot continue to rotate (the driving assembly 52 reaches the locked state). It can be understood that during installation, the locking member 522 can be lifted up by the hook 511, so there is no need to press the button 523; when disassembling the control box body 51, pressing the button 523 can control the locking member 522 to rotate, thereby disengaging the locking member 522 from the hook 511.

[0237] The locking member 522 is used to lock the main body 521 as a safety device to prevent accidental unlocking. The entire operation process is concentrated on the driving component 52 and is completed. It is suitable for holding the main body 521 and operating the button 523 with one hand to achieve quick operation by one person with one hand.

[0238] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display screen, characterized in that: include: Box frame (1); A quick lock device (2), the quick lock device (2) comprising a first lock body (21) and a second lock body (22), the first lock body (21) being arranged at one end of the box frame (1) along a first direction, the second lock body (22) being arranged at the other end along the first direction, the first lock body (21) of one of two adjacent box frames (1) along the first direction being connected to the second lock body (22) of the other; An arc locking device (3) comprises an arc locking mechanism and a second locking rod assembly (39); the arc locking mechanism is arranged on one side of the box frame (1) along the second direction, and the second locking rod assembly (39) is arranged on the other side; the arc locking mechanism of one of the two adjacent box frames (1) along the second direction is connected to the second locking rod assembly (39) of the other; the arc locking device (3) is used to adjust the splicing angle of the two adjacent box frames (1) along the second direction; A control box locking device (5), the control box locking device (5) comprising a control box body (51) and a locking structure, the control box body (51) being snap-connected to the box frame (1) via the locking structure, the locking structure comprising: A driving assembly (52) is rotatably connected to the control box body (51), and the driving assembly (52) has a locked state in which it is engaged with the control box body (51) and an unlocked state in which it rotates relative to the control box body (51); A clamping member (53) is connected to the driving assembly (52) and is at least partially slidably disposed in the control box body (51). The driving assembly (52) rotates to drive the clamping member (53) to slide in the control box body (51), so that the clamping member (53) is clamped with the box frame (1).

2. The display screen according to claim 1, characterized in that: The first lock body (21) comprises a locking seat (211) and a first locking rod assembly (212), wherein the first locking rod assembly (212) is used to lock the locking seat (211) and the second lock body (22); The locking seat (211) comprises a first seat body (2111) and a first connecting column (2112); the first seat body (2111) is arranged at one end of the first connecting column (2112); and a first connecting hole (2113) penetrating the first connecting column (2112) is arranged at the center of the first seat body (2111); The first locking rod assembly (212) comprises a first locking rod (2121), the first locking rod (2121) passes through the first connecting hole (2113) and then extends out of the first seat body (2111) to be connected with the second lock body (22); the outer periphery of the first locking rod (2121) is provided with an extension limiting groove (21211); A first limiting assembly (213) is provided on one side of the first seat body (2111) close to the first connecting column (2112), and the first limiting assembly (213) is arranged in the circumference of the first connecting column (2112); the first limiting assembly (213) includes a first limiting column (2131), the first limiting column (2131) is telescopically arranged, the first limiting column (2131) passes through the first connecting column (2112) and extends into the first connecting hole (2113), and the first limiting column (2131) is extended to cooperate with the extending limiting groove (21211) so that the first locking rod (2121) remains in an extended state.

3. The display screen according to claim 2, characterized in that: The first lock body (21) further comprises a locking sleeve (214), one end of which is rotatably connected to the first connecting column (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 assembly (213), and the locking sleeve (214) is rotated to cause the first limiting column (2131) to extend and retract, thereby driving the first locking rod (2121) to move; A first limiting hole (21111) is provided on one side of the first seat body (2111) close to the first connecting column (2112), and the first limiting hole (21111) is located in the circumference of the first connecting column (2112); The first limiting assembly (213) also includes a first limiting spring (2132) and a clamping plate (2133). A gap is left between the first limiting hole (21111) and the first connecting column (2112), and the gap is located at an end away from the first seat body (2111). The first limiting spring (2132) is arranged at an end of the first limiting column (2131) away from the first connecting column (2112). The clamping plate (2133) is arranged at an end of the first limiting column (2131) close to the first connecting column (2112). The locking sleeve (214) extends into the gap and cooperates with the clamping plate (2133). Rotating the locking sleeve (214) can make the first limiting column (2131) extend and retract.

4. The display screen according to claim 3, characterized in that: The outer periphery of the locking sleeve (214) is provided with a vertical section (2141), and when the first limiting column (2131) is extended to cooperate with the extending limiting groove (21211), the pressing plate (2133) abuts against the vertical section (2141); when the locking sleeve (214) is rotated, the pressing plate (2133) abuts against the outer periphery of the locking sleeve (214), so that the first limiting column (2131) can be contracted and disengaged from the extending limiting groove (21211).

5. The display screen according to claim 2, characterized in that: A locking limit groove (21213) is also provided on the outer periphery of the first locking rod (2121), the depth of the locking limit groove (21213) is less than the depth of the extending limit groove (21211), and the locking limit groove (21213) extends along the length direction of the first locking rod (2121), and the extending limit groove (21211) is provided at the end of the locking limit groove (21213) away from the connection between the first locking rod (2121) and the second lock body (22).

6. The display screen according to claim 1, characterized in that: The arc lock mechanism comprises an arc lock seat (31) and a latch lock assembly (32), wherein the latch lock assembly (32) is arranged on one side of the arc lock seat (31), and the second lock rod assembly (39) cooperates with the latch lock assembly (32) to lock; the arc lock mechanism also comprises: An arc lock slider (33), wherein a first slide groove (3111) extending in a circumferential direction is arranged in the arc lock seat (31), the arc lock slider (33) is slidably arranged in the first slide groove (3111), and both ends of the first slide groove (3111) pass through the two side walls of the arc lock seat (31), and the latch lock assembly (32) is arranged on one side of the arc lock slider (33); A fixed pressing block (36), wherein the arc locking slider (33) is provided with a first mounting hole (331) whose center line extends radially, and the fixed pressing block (36) is telescopically arranged in the first mounting hole (331); The angle adjustment component comprises an angle adjustment knob (34) and a connecting rod (35), wherein the connecting rod (35) is arranged at one end of the angle adjustment knob (34), and the connecting rod (35) passes through the fixed pressure block (36) and is rotatably connected to the arc lock slider (33), and the mating end surfaces of the fixed pressure block (36) and the angle adjustment knob (34) are provided with an angle locking position and an angle unlocking position, and the angle adjustment knob (34) is rotated to enable the angle adjustment knob (34) to selectively cooperate with the angle locking position or the angle unlocking position, and the fixed pressure block (36) can be fixed or released with the arc lock seat (31).

7. The display screen according to claim 6, characterized in that: 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 the first locking plane (3612), and two first locking planes (3612) are provided, and the first unlocking plane (3613) is located between the two first locking planes (3612).

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

9. The display screen according to claim 1, characterized in that: The box frame (1) comprises a frame body (13) and a protection mechanism (14); the protection mechanism (14) is arranged at both ends of the frame body (13) along a first direction; the protection mechanism (14) comprises a protection plate (141), a connecting frame (142) and a first elastic member (143); the protection plate (141) extends along the length direction of the end of the frame body (13); the connecting frame (142) is arranged on one side of the protection plate (141); the frame body (13) is provided with a receiving cavity (131); the first elastic member (143) The elastic member (143) is arranged in the accommodating cavity (131) and is connected to the connecting frame (142); the extension direction of the first elastic member (143) is arranged at a preset angle with the protective plate (141); the connecting frame (142) can be retracted into the accommodating cavity (131) and compress the first elastic member (143) when subjected to force; the first elastic member (143) can drive the connecting frame (142) to extend out of the accommodating cavity (131), so that the connecting frame (142) drives the protective plate (141) to extend to the front side of the display module (4).

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

11. The display screen according to claim 10, characterized in that: The connecting frame (142) is provided with a guide groove (1422) whose center line is parallel to the inclined surface (1311), and the accommodating cavity (131) is provided with a guide member, which cooperates with the guide groove (1422) to provide guidance for the movement of the protection plate (141).

12. The display screen according to claim 9, characterized in that: The protection mechanism (14) further comprises a second limiting component (144), the second limiting component (144) being telescopically arranged on the frame body (13), the protection plate (141) being provided with a second limiting hole (1411), the second limiting component (144) being used for cooperating with the second limiting hole (1411) to fix the protection plate (141) when the protection plate (141) is extended to the front side of the display module (4).

13. The display screen according to claim 1, characterized in that: The display screen further comprises a display module (4), wherein the display module (4) comprises: A first bottom shell (41) and an LED light board (42), wherein the LED light board (42) is mounted on the front side of the first bottom shell (41), and a maintenance hole (43) is provided through the LED light board (42) and the first bottom shell (41); A rear cover (44) connected to the rear side of the first bottom shell (41); A locking device (45) is arranged between the first bottom shell (41) and the rear cover (44), and the locking device (45) comprises 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 both matched 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 in a direction of approaching or moving 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 both provided with a clamping part (17), and the rear cover (44) is provided with an avoidance opening corresponding to the clamping part (17). The maintenance hole (43) is arranged corresponding to the maintenance part (4512), and the maintenance ejector pin (46) passes through the maintenance hole (43) to apply force to the maintenance part (4512), thereby enabling the disassembly shaft (451) to rotate; The box frame (1) is provided with a clamping position (16) for clamping with the clamping portion (17).

14. The display screen according to claim 13, characterized in that: The maintenance hole (43) includes an unlocking hole (431) and a locking hole (432), and the unlocking hole (431) and the locking hole (432) are arranged at intervals. The maintenance portion (4512) includes a second unlocking plane (45121) and a second locking plane (45122), and the second unlocking plane (45121) and the second locking plane (45122) are arranged at preset angles along the circumferential direction of the disassembly and assembly axis (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, characterized in that: The maintenance portion (4512) further comprises a connecting arc surface (45123) for connecting the second unlocking plane (45121) and the second locking plane (45122), wherein one end of the connecting arc surface (45123) close to the second unlocking plane (45121) is provided with a first limiting groove (45124), and one end of the connecting arc surface (45123) close to the second locking plane (45122) is provided with a second limiting groove (45125); A limiting protrusion (412) is provided on one side of the first bottom shell (41) close to the disassembly and assembly shaft (451), and 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, characterized in that: The transmission part includes a gear structure (4511) arranged on the outer periphery of the disassembly and assembly shaft (451); a first rack structure (4522) is provided at one end of the first locking member (452) close to the second locking member (453); a second rack structure (4532) is provided at one end of the second locking member (453) close to the first locking member (452); the first rack structure (4522) is located on a side of the gear structure (4511) close to the rear cover (44) and meshes with the gear structure (4511); the second rack structure (4532) is located on a side of the gear structure (4511) close to the first bottom shell (41) and meshes with the gear structure (4511).

17. The display screen according to claim 1, characterized in that: The drive assembly (52) comprises: A main body (521) is rotatably connected to the control box body (51) and connected to the clamping member (53); A locking member (522) is rotatably disposed in the main body (521), a first end of the locking member (522) is connected to the main body (521) via a second elastic member (524), and a second end of the locking member (522) is engaged with the control box body (51); The main body (521) is provided with a button (523) on the outside. The button (523) is connected to the locking member (522) and is used for pressing the locking member (522) to press against the second elastic member (524).

18. The display screen according to claim 17, characterized in that: The control box locking device (5) further comprises a first connecting member (54), a guide hole (531) is provided on the clamping member (53), one end of the first connecting member (54) is rotatably connected to the main body (521) and the other end is slidably disposed in the guide hole (531), and the rotation of the main body (521) can drive the first connecting member (54) to slide in the guide hole (531).

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