LED display screen

Abstract

This utility model belongs to the field of display technology, and specifically provides an LED display screen. The utility model has a mounting frame with a mounting edge and a lock hole on the mounting edge. The splicing sub-display screen includes a bottom shell. The lock includes a locking rod, a lock head, and a lock cylinder rotatably mounted on the bottom shell, with both ends of the locking rod fixed to the lock head and the lock cylinder respectively. The lock head follows the locking rod through the lock hole and is locked to the mounting edge. This utility model allows the lock head to be disengaged from the mounting edge by rotating the lock head, so that the projection area of ​​the lock hole on the ground on the mounting edge covers the projection area of ​​the lock head on the ground. This allows for quick separation of the lock head from the mounting edge via the lock hole. Since the lock is assembled onto the bottom shell of the splicing sub-display screen, and the mounting edge is located on the mounting frame, the splicing sub-display screen can be quickly detached from the mounting frame simply by rotating the lock head.

Description

Technical Field

[0001] This utility model belongs to the field of display technology, and more specifically, relates to an LED display screen. Background Technology

[0002] Today, LED display production technology is becoming increasingly mature. With the continuous application of LED displays, some industries (such as the display rental industry) are particularly concerned about the issue of rapid assembly and disassembly of LED displays.

[0003] LED displays are composed of multiple splicing sub-displays. On the one hand, during disassembly after use, each sub-display needs to be removed individually, which is not only inefficient for disassembling a single sub-display but also time-consuming. On the other hand, due to limitations in installation space and manufacturing costs, many LED displays lack maintenance access. Therefore, in scenarios requiring maintenance, the sub-display to be maintained must be removed from the LED display's mounting frame before maintenance can be performed, which is inconvenient for disassembling individual sub-displays.

[0004] Therefore, there is an urgent need to invent an LED display screen to solve the aforementioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is how to quickly detach a single splicing sub-display screen from the mounting frame using a locking device, thus providing an LED display screen.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is to provide an LED display screen, which includes:

[0007] The mounting frame has a mounting edge, and the mounting edge has a locking hole;

[0008] Splicing sub-display screen, including the base shell;

[0009] The lock includes a lock bar, a lock head, and a lock cylinder rotatably mounted on the bottom housing, wherein the two ends of the lock bar are respectively fixed to the lock head and the lock cylinder; the lock head follows the lock bar through the lock hole and is locked and fixed to the mounting edge;

[0010] When the lock head is rotated to the point where the lock hole covers the projection area of ​​the lock head on the bottom shell, the lock head is released from the mounting edge and separated from the mounting edge through the lock hole.

[0011] In one more specific embodiment, the LED display screen further includes a limiting body mounted on the base shell;

[0012] The bottom shell has a first mounting hole for accommodating the lock cylinder; the lock includes a locked state and an unlocked state. When the lock is in the locked state, one end of the lock cylinder abuts against the wall of the first mounting hole, and the other end partially engages with and abuts against the limiting body.

[0013] When the lock switches from the locked state to the unlocked state, the lock bar follows the lock head and drives the lock cylinder to rotate, and the lock cylinder disengages from the limiting body.

[0014] In one specific embodiment, the limiting body further includes two limiting structures, and both limiting structures are fixed to the surface of the limiting body; the head end of one limiting structure is arranged close to the tail end of the other limiting structure.

[0015] The surface of the lock cylinder is provided with two second clearance groove structures, and when the lock cylinder is disengaged from the limiting body, the two limiting structures simultaneously exit from the corresponding second clearance groove structures.

[0016] In one specific embodiment, each of the limiting structures includes a first limiting edge and a limiting protrusion; wherein, the first limiting edge includes a first limiting edge segment and a second limiting edge segment that engages with the first limiting edge segment, and the height of the first limiting edge segment gradually increases from the first end to the last end; along the height direction of the limiting structure, the second limiting edge segment has a mounting surface that is flush with the outer end face of the last end of the first limiting edge segment, and the limiting protrusion is fixed on the mounting surface;

[0017] The second clearance groove structure includes a first clearance groove body and a second clearance groove body connected to the first clearance groove body. When the lock cylinder rotates in the opposite direction relative to the limiting body, the first limiting edge segment is gradually embedded into the first clearance groove body until the limiting protrusion presses against the groove wall of the second clearance groove body.

[0018] In one specific embodiment, the first mounting hole is a stepped hole, and the first mounting hole includes a first mounting hole segment and a second mounting hole segment that engages with the first mounting hole segment, and the second mounting hole segment is arranged away from the limiting body; the size of the first mounting hole segment is greater than the size of the second mounting hole segment;

[0019] The lock cylinder includes a sleeve and a rotating sleeve with one end mounted on the inner end face of the sleeve, and the sleeve is rotatably mounted in the first mounting hole section; the rotating sleeve is rotatably mounted in the second mounting hole section.

[0020] In one specific embodiment, the bottom shell is further provided with a first pivot hole that communicates with the second mounting hole section; the middle portions of the lock cylinder and the lock rod are respectively provided with a second pivot hole and a third pivot hole that communicates with the second pivot hole, and the second pivot hole also communicates with the first pivot hole; the middle portion of the lock head is machined with a pivot groove that communicates with the third pivot hole;

[0021] The LED display screen also includes a rotating shaft, which is rotatably mounted in the first rotating shaft hole through the rotating shaft groove, the third rotating shaft hole and the second rotating shaft hole to assist the lock in rotating relative to the bottom shell.

[0022] In one specific embodiment, a boss is machined on the surface of the lock cylinder;

[0023] The lock cylinder has a first clearance groove structure that is identical in structure and size to the second clearance groove structure, and the boss is located between the two first clearance groove structures; a limiting structure is embedded in the first clearance groove structure when the lock head is released from the corresponding mounting edge.

[0024] In one specific embodiment, both ends of the limiting body extend into lugs, and each lug is provided with a second mounting hole;

[0025] A third mounting hole is provided on the bottom shell at the corresponding position of each of the second mounting holes;

[0026] The LED display screen also includes a plurality of fasteners, and two of the fasteners are respectively connected to the corresponding third mounting holes via the second mounting hole.

[0027] In one specific embodiment, the second limiting edge segment also has a limiting surface and a first stop surface that forms an obtuse angle with the limiting surface, and the limiting surface is parallel to the outer end face of the first end of the second limiting edge segment;

[0028] Each of the first clearance grooves has a second stop surface arranged opposite to the first stop surface, and each of the second stop surfaces presses against the corresponding first stop surface when the corresponding first limiting edge is embedded into the first clearance groove.

[0029] In one specific embodiment, a handle for easy gripping is installed at one end of the lock head; and / or, multiple anti-slip protrusions are symmetrically arranged on both sides of the lock head along its length.

[0030] The beneficial effects of this utility model are as follows: by rotating the lock head in the lock, the orthographic projection area of ​​the lock hole on the mounting edge on the ground covers the orthographic projection area of ​​the lock head on the ground, thereby releasing the lock head from the mounting edge and enabling rapid separation of the lock head from the mounting edge via the lock hole. Since the lock is assembled onto the bottom shell of the splicing sub-display screen, and the mounting edge is located on the mounting frame, it means that by using the aforementioned method, the splicing sub-display screen can be quickly detached from the mounting frame simply by rotating the lock head. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of an LED display screen according to one embodiment of the present invention;

[0033] Figure 2 This is a utility model Figure 1 Enlarged view of point B in the middle;

[0034] Figure 3 This utility model Figure 1 Cross-sectional view;

[0035] Figure 4 This is a utility model Figure 3 Enlarged view of point C in the middle;

[0036] Figure 5 This utility model Figure 1 Exploded view;

[0037] Figure 6 This is a utility model Figure 5 Enlarged view of point A in the middle;

[0038] Figure 7 This is a schematic diagram of the lock structure in one embodiment of the present invention;

[0039] Figure 8 This is a utility model Figure 7 A structural diagram of the lock cylinder, lock bar, and lock core;

[0040] Figure 9 This is a utility model Figure 8 Cross-sectional view;

[0041] Figure 10 This is one of the structural schematic diagrams of the limiting body in one embodiment of this utility model;

[0042] Figure 11 This is a second schematic diagram of the structure of the limiting body in one embodiment of this utility model;

[0043] Figure 12 This is a front view of the bottom shell in one embodiment of the present invention;

[0044] Figure 13 This is a utility model Figure 12 A cross-sectional view of A-A;

[0045] Reference numerals: 1, LED display screen; 10, mounting frame; 100, mounting edge; 1000, keyhole; 1001, fourth mounting hole;

[0046] 11. Splicing sub-display screen; 110. Display module; 111. Base shell; 1110. First mounting hole; 1110a. First mounting hole segment; 1110b. Second mounting hole segment; 1111. First mounting groove; 1112. Third mounting hole; 1113. First pivot hole; 1114. Second limiting edge; 1115. Limiting component;

[0047] 12. Lock; 120. Lock cylinder; 1200. Second clearance groove structure; 1200a. First clearance groove body; 1200b. Second clearance groove body; 1200c. Second stop surface; 1200d. Boss; 1200e. First clearance groove structure; 1200f. Second pivot hole; 1201. Sleeve; 1202. Rotating sleeve; 121. Lock head; 1210. Handle; 1211. Anti-slip protrusion; 1212. Pivot groove; 122. Lock rod; 1220. Third pivot hole;

[0048] 123. Limiting body; 1230. Limiting structure; 1230a. First limiting edge; 1230b. Limiting protrusion; 1230c. First limiting edge segment; 1230d. Second limiting edge segment; 1230e. Mounting surface; 1230f. Limiting surface; 1230g. First stop surface; 1231. Second mounting groove; 1232. Lug; 1232a. Second mounting hole. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0050] refer to Figure 1- Figure 10 This utility model provides an LED display screen 1, which can be applied to commercial advertising and brand promotion (e.g., outdoor advertising screens, indoor digital signage, etc.), stage performances and entertainment production (e.g., concerts or music festivals, theaters and television programs, etc.), sports events and venue applications (e.g., scoreboards and information displays, opening ceremonies of large-scale events, etc.), and traffic control and information dissemination (e.g., intelligent traffic guidance screens, station / airport information screens, etc.). Of course, the application scenarios of this LED display screen 1 are not limited to the aforementioned.

[0051] The LED display screen 1 includes a mounting frame 10, multiple splicing sub-display screens 11 and locks 12. Each splicing sub-display screen 11 is mounted on the mounting frame 10 through a corresponding lock 12. The LED display screen 1 is composed of multiple splicing sub-display screens 11.

[0052] The mounting frame 10 has multiple mounting edges 100 for fixing the splicing sub-display screens 11, wherein each mounting edge 100 has multiple locking holes 1000, and the multiple locking holes 1000 are arranged along the length direction of the mounting edge 100. In this specific embodiment, the number of mounting edges 100 can be four, and each mounting edge 100 can have six locking holes 1000. Of course, in other specific embodiments, the number of mounting edges 100 and the number of locking holes 1000 can be other than those specified.

[0053] Each splicing sub-display 11 includes a display module 110 and a base shell 111, with the display module 110 mounted on the base shell 111. The base shell 111 has a plurality of first mounting holes 1110 for accommodating the lock cylinder 120 (see below for details) and first mounting grooves 1111 communicating with the first mounting holes 1110. Obviously, the number of first mounting holes 1110 is equal to the number of first mounting grooves 1111, and also equal to the number of the aforementioned lock holes 1000.

[0054] Each lock 12 is assembled onto the base shell 111 and includes a lock cylinder 120, a lock head 121, and a locking rod 122 fixed at both ends to the lock cylinder 120 and the lock head 121, respectively. The lock cylinder 120 is assembled into the first mounting hole 1110. Specifically, the lock cylinder 120 is rotatably installed into the first mounting hole 1110. The locking rod 122 passes through the first mounting hole 1110 and the first mounting groove 1111 and extends through the corresponding lock hole 1000. The lock head 121 is locked and fixed to the mounting edge 100, so that the splicing sub-display screen 11 can be assembled onto the mounting frame 10 through the lock 12. Obviously, the lock 12 includes a locked state and an unlocked state. When the lock 12 is in the locked state, the orthographic projection area of ​​the keyhole 1000 on the bottom shell 111 partially overlaps with the orthographic projection area of ​​the lock head 121 on the bottom shell 111. When the lock 12 is in the unlocked state, the orthographic projection area of ​​the keyhole 1000 on the bottom shell 111 covers the orthographic projection area of ​​the lock head 121 on the bottom shell 111.

[0055] Referring to the foregoing, in order to prevent the lock cylinder 120 from moving along the axial direction of the lock rod 122 during rotation within the first mounting hole 1110 by stopping the lock cylinder 120 with the limiting body 123, the limiting body 123 is assembled into the first mounting groove 1111. When the lock head 121 is rotated to the point where the projection area of ​​the lock hole 1000 on the ground covers the projection area of ​​the lock head 121 on the ground, the lock head 121 is released from the mounting edge 100 and is separated from the mounting edge 100 through the corresponding lock hole 1000. Thus, the splicing sub-display screen 11 can be quickly separated from the mounting frame 10 simply by rotating the lock head 121, thereby improving the speed at which a single splicing sub-display screen 11 is removed from the mounting frame 10.

[0056] Furthermore, to prevent the sub-display screen 11 from rotating relative to the mounting frame 10, a limiting member 1115 is installed on the bottom shell 111. Correspondingly, a fifth mounting hole (not shown) is also provided on the mounting edge 100. When the sub-display screen 11 is installed onto the mounting frame 10 via the locking device 12, the limiting member 1115 is engaged in the fifth mounting hole and protrudes from the surface of the mounting edge 100. Of course, in other specific embodiments, other methods can also be used to prevent the sub-display screen 11 from rotating relative to the mounting frame 10.

[0057] In one specific embodiment, the LED display screen 1 further includes a limiting body 123 mounted on the base shell 111. Referring to the foregoing, the lock 12 includes a locked state and an unlocked state. When the lock 12 is in the locked state, one end of the lock cylinder 120 abuts against the wall of the first mounting hole 1110, and the other end partially engages with and abuts against the limiting body 123. When the lock 12 switches from the locked state to the unlocked state, the locking rod 122 follows the lock head 121 and drives the lock cylinder 120 to rotate, causing the lock cylinder 120 to disengage from the limiting body 121. At this time, a gap is formed between the lock cylinder 120 and the limiting body 121.

[0058] In one specific embodiment, the limiting body 123 further includes two limiting structures 1230, which are used to lock the lock cylinder 120 to the limiting body 123. Along the length of the mounting edge 100, both limiting structures 1230 are fixed to the surface (specifically the back side) of the limiting body 123, with the head end of one limiting structure 1230 positioned close to the tail end of the other limiting structure 1230. Alternatively, the two limiting structures 1230 are arranged in a mirror image.

[0059] The limiting body 123 has a second mounting groove 1231 for accommodating the locking rod 122, and two limiting structures 1230 are respectively located on both sides of the second mounting groove 1231. Specifically, when the lock cylinder 120 rotates with the lock head 121, the locking rod 122 also rotates within the second mounting groove 1231. In this specific embodiment, in order to facilitate the limiting body 123 disengaging from the locking rod 122 while the locking rod 122 rotates within the second mounting groove 1231, the projection shape of the second mounting groove 1231 on the ground can be U-shaped. Of course, in other specific embodiments, the projection shape of the second mounting groove 1231 on the ground can also be other shapes.

[0060] Correspondingly, the surface (specifically the front) of the lock cylinder 120 is provided with two second clearance groove structures 1200. When the lock cylinder 120 disengages from the limiting body 123, the two limiting structures 1230 simultaneously retract from their corresponding second clearance groove structures 1200e. It should be noted that the limiting body 123 is fixed to the base shell 111. During the process of the lock rod 122 following the lock head 121 and driving the lock cylinder 120 to rotate, the limiting body 123 remains stationary, while the two second clearance groove structures 1200 move out of their corresponding limiting structures 1230. In other words, the two limiting structures 1230 passively retract from their corresponding second clearance groove structures 1200.

[0061] In one specific embodiment, each limiting structure 1230 includes a first limiting edge 1230a and a limiting protrusion 1230b. The first limiting edge 1230a includes a first limiting edge segment 1230c and a second limiting edge segment 1230d that engages with the first limiting edge segment 1230c. The height of the first limiting edge segment 1230c gradually increases from its beginning to its end (it should be noted that the end of the first limiting edge segment 1230c is close to the second limiting edge segment 1230d). The width of the first limiting edge segment 1230c is equal to the width of the second limiting edge segment 1230d. Furthermore, along the height direction of the limiting structure 1230, the second limiting edge segment 1230d has a mounting surface 1230e that is flush with the outer end face of the end face of the first limiting edge segment 1230c, and the limiting protrusion 1230b is fixed to the mounting surface 1230e. In this specific embodiment, the mounting surface 1230e can be a plane, and the limiting protrusion 1230b can be located in the middle of the mounting surface 1230e. It should be noted that the first end of the first limiting segment 1230c is transitionally engaged with the surface of the limiting body 123.

[0062] The second clearance groove structure 1200 includes a first clearance groove body 1200a and a second clearance groove body 1200b connected to the first clearance groove body 1200a. Clearly, the first clearance groove body 1200a is used to accommodate the first limiting edge segment 1230c, and the second clearance groove body 1200b is used to accommodate the limiting protrusion 1230b. When the lock cylinder 120 rotates in the opposite direction relative to the limiting body 123, that is, when the lock 12 switches from the unlocked state to the locked state, the first limiting edge segment 1230c is gradually embedded into the first clearance groove body 1200a until the limiting protrusion 1230b presses against the groove wall of the second clearance groove body 1200b.

[0063] In one specific embodiment, when the lock 12 is in the unlocked state, to prevent the limiting protrusion 1230b from pressing against the surface of the lock cylinder 120 and causing wear, a boss 1200d is machined on the surface of the lock cylinder 120. When the lock 12 is in the unlocked state, to facilitate temporary accommodation of the limiting structure 1230, a first clearance groove structure 1200e with the same structure and size as the second clearance groove structure 1200 is provided on the boss 1200d, and the boss 1200d is located between the two second clearance groove structures 1200. The first clearance groove structure 1200e is used to embed a limiting structure 1230 when the lock head 121 is unlocked from the mounting edge 100. It should be noted that, in order to reduce the manufacturing cost of the lock head 121, only a single second clearance groove 1200b is provided on the surface of the lock head 121 at the position corresponding to the first clearance groove structure 1200e. In other words, when the lock 12 is in the locked state, when one limiting structure 1230 is embedded in the first clearance groove structure 1200e, the limiting protrusion 1230b in the other limiting structure 1230 is embedded in the second clearance groove 1200b. At this time, the mounting surface 1230e in the other limiting structure 1230 is in contact with the surface of the lock head 121. Obviously, the height of the protrusion 1200d is equal to the height of the second limiting edge 1230d. When the lock 12 is in the unlocked state, both limiting structures 1230 are simultaneously embedded in the corresponding first clearance groove structures 1200.

[0064] Optionally, referring to the foregoing, in order to fix the limiting body 123 to the base shell 111, both ends of the limiting body 123 extend into lugs 1232, and each lug 1232 is provided with a second mounting hole 1232a. Correspondingly, a third mounting hole 1112 is provided on the base shell 111 at the corresponding position of each second mounting hole 1232a. Further, the LED display screen 1 also includes a plurality of fasteners, and each fastener is fixed to the corresponding third mounting hole 1112 via the second mounting hole 1232a. In other specific embodiments, the limiting body 123 can also be fixed to the base shell 111 in other ways. In this specific embodiment, the fastener can be a bolt, and each bolt is threaded into the corresponding third mounting hole 1112 via the second mounting hole 1232a.

[0065] Preferably, after the limiting structure 1230 is embedded into the corresponding second clearance groove structure 1200, in order to prevent the limiting structure 1230 from moving out of the corresponding second clearance groove structure 1200 under the rotation of the lock cylinder 120, the second limiting edge segment 1230d also has a limiting surface 1230f and a first stop surface 1230g that forms an obtuse angle with the limiting surface 1230f, and the limiting surface 1230f is parallel to the outer end face of the first end of the second limiting edge segment 1230d. Correspondingly, each first clearance groove 1200a has a second stop surface 1200c arranged opposite to the first stop surface 1230g, and each second stop surface 1200c presses against the corresponding first stop surface 1230g when the corresponding first limiting edge segment 1230c is embedded in the first clearance groove 1200a. At this time, the limiting surface 1230f also fits against the inner end face of the tail end of the first clearance groove 1200a (it should be noted that the first end of the first clearance groove 1200a corresponds to the first end of the first limiting edge segment 1230c, and the tail end of the first clearance groove 1200a corresponds to the tail end of the second limiting edge segment 1230d; the first limiting edge 1230a is formed by joining the first limiting edge segment 1230c to the second limiting edge segment 1230d).

[0066] In one specific embodiment, the first mounting hole 1110 is a stepped hole, and the first mounting hole 1110 includes a first mounting hole section 1110a communicating with the first mounting groove 1111 and a second mounting hole section 1110b engaging with the first mounting hole section 1110a. The second mounting hole section 1110b is arranged away from the limiting body 123, and the size value (e.g., diameter or radius) of the first mounting hole section 1110a is larger than the size value of the second mounting hole section 1110b. The lock cylinder 120 includes a sleeve 1201 and a rotating sleeve 1202 fitted inside the sleeve 1201, with one end of the rotating sleeve 1202 fixed to the inner end face of the sleeve 1201. The sleeve 1201 is rotatably mounted to the first mounting hole section 1110a, and the rotating sleeve 1202 is partially rotatably mounted to the second mounting hole section 1110b.

[0067] In one specific embodiment, to assist the lock cylinder 120 in rotating relative to the base shell 111 around the axis of the lock rod 122, the base shell 111 is also provided with a first pivot hole 1113 communicating with the second mounting hole section 1110b; the middle portions of the lock cylinder 120 and the lock rod 122 are respectively provided with a second pivot hole 1200f and a third pivot hole 1202a communicating with the second pivot hole 1200f, and the second pivot hole 1200f is also communicating with the first pivot hole 1113; the middle portion of the lock head 121 is machined with a pivot groove 1212 communicating with the third pivot hole 1202a. Correspondingly, the LED display screen 1 also includes a pivot (not shown), and the pivot passes through the pivot groove 1212, the third pivot hole 1202a and the second pivot hole 1200f and is rotatably installed in the first pivot hole 1113 to assist the lock 12 in rotating relative to the base shell 111.

[0068] In one specific embodiment, to facilitate the user's grip and rotation of the lock head 121 to quickly separate the lock 12 from the mounting edge 100, thereby allowing the splicing sub-display screen 11 to be detached from the mounting frame 10, a handle 1210 is installed at one end of the lock head 121. Furthermore, to prevent slippage when the user grips the lock head 121, multiple anti-slip protrusions 1211 are symmetrically arranged on both sides of the lock head 121 along its length.

[0069] In one specific embodiment, in order to assemble the limiting body 123 onto the base shell 111, second limiting edges 1114 are respectively arranged on the base shell 111 on both sides of the first mounting groove 1111, and the limiting body 123 is embedded in the first mounting groove 1111 and placed between the two second limiting edges 1114. Obviously, the structure of the second limiting edges 1114 is adapted to the side contour of the limiting body 123.

[0070] The above are merely specific embodiments of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model. Therefore, this utility model is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An LED display screen, characterized in that, include: The mounting frame has a mounting edge, and the mounting edge has a locking hole; Splicing sub-display screen, including the base shell; The lock includes a lock bar, a lock head, and a lock cylinder rotatably mounted on the bottom housing, wherein the two ends of the lock bar are respectively fixed to the lock head and the lock cylinder; the lock head follows the lock bar through the lock hole and is locked and fixed to the mounting edge; When the lock head is rotated to the point where the lock hole covers the projection area of ​​the lock head on the bottom shell, the lock head is released from the mounting edge and separated from the mounting edge through the lock hole.

2. The LED display screen according to claim 1, characterized in that, The LED display screen also includes a limiting body assembled onto the bottom shell; The bottom shell has a first mounting hole for accommodating the lock cylinder; the lock includes a locked state and an unlocked state. When the lock is in the locked state, one end of the lock cylinder abuts against the wall of the first mounting hole, and the other end partially engages with and abuts against the limiting body. When the lock switches from the locked state to the unlocked state, the lock bar follows the lock head and drives the lock cylinder to rotate, and the lock cylinder disengages from the limiting body.

3. The LED display screen according to claim 2, characterized in that, The limiting body further includes two limiting structures, and both limiting structures are fixed to the surface of the limiting body; the first end of one limiting structure is arranged close to the tail end of the other limiting structure. The surface of the lock cylinder is provided with two second clearance groove structures, and when the lock cylinder is disengaged from the limiting body, the two limiting structures simultaneously exit from the corresponding second clearance groove structures.

4. The LED display screen according to claim 3, characterized in that, Each of the limiting structures includes a first limiting edge and a limiting protrusion; wherein, the first limiting edge includes a first limiting edge segment and a second limiting edge segment that engages with the first limiting edge segment, and the height of the first limiting edge segment gradually increases from the first end to the last end; along the height direction of the limiting structure, the second limiting edge segment has a mounting surface that is flush with the outer end face of the last end of the first limiting edge segment, and the limiting protrusion is fixed on the mounting surface; The second clearance groove structure includes a first clearance groove body and a second clearance groove body connected to the first clearance groove body. When the lock cylinder rotates in the opposite direction relative to the limiting body, the first limiting edge segment is gradually embedded into the first clearance groove body until the limiting protrusion presses against the groove wall of the second clearance groove body.

5. The LED display screen according to claim 2, characterized in that, The first mounting hole is a stepped hole, and the first mounting hole includes a first mounting hole segment and a second mounting hole segment that engages with the first mounting hole segment, and the second mounting hole segment is arranged away from the limiting body; the size of the first mounting hole segment is greater than the size of the second mounting hole segment; The lock cylinder includes a sleeve and a rotating sleeve that fit together, and one end of the rotating sleeve is fixed to the inner end face of the sleeve; the sleeve is rotatably installed into the first mounting hole section; the rotating sleeve is rotatably installed into the second mounting hole section.

6. The LED display screen according to claim 5, characterized in that, The bottom shell is also provided with a first pivot hole that communicates with the second mounting hole section; the middle parts of the lock cylinder and the lock rod are respectively provided with a second pivot hole and a third pivot hole that communicates with the second pivot hole, and the second pivot hole also communicates with the first pivot hole; the middle part of the lock head is machined with a pivot groove that communicates with the third pivot hole; The LED display screen also includes a rotating shaft, which is rotatably mounted in the first rotating shaft hole through the rotating shaft groove, the third rotating shaft hole and the second rotating shaft hole to assist the lock in rotating relative to the bottom shell.

7. The LED display screen according to claim 3, characterized in that, The surface of the lock cylinder is machined with bosses; The lock cylinder has a first clearance groove structure that is identical in structure and size to the second clearance groove structure, and the boss is located between the two first clearance groove structures; a limiting structure is embedded in the first clearance groove structure when the lock head is released from the corresponding mounting edge.

8. The LED display screen according to claim 2, characterized in that, Both ends of the limiting body extend into lugs, and each lug is provided with a second mounting hole; A third mounting hole is provided on the bottom shell at the corresponding position of each of the second mounting holes; The LED display screen also includes a plurality of fasteners, and two of the fasteners are respectively connected to the corresponding third mounting holes via the second mounting hole.

9. The LED display screen according to claim 4, characterized in that, The second limiting edge segment also has a limiting surface and a first stop surface that forms an obtuse angle with the limiting surface, and the limiting surface is parallel to the outer end face of the first end of the second limiting edge segment; Each of the first clearance grooves has a second stop surface arranged opposite to the first stop surface, and each of the second stop surfaces presses against the corresponding first stop surface when the corresponding first limiting edge is embedded into the first clearance groove.

10. The LED display screen according to any one of claims 1-9, characterized in that, One end of the lock cylinder is fitted with a handle for easy gripping; And / or, along the length of the lock head, multiple anti-slip protrusions are symmetrically arranged on both sides of the lock head.

Images