Left and right connecting device for LED display screen box frame

Abstract

The utility model provides an LED display screen box frame left-right connecting device which comprises display screen mounting frames, an LED display screen can be mounted on each display screen mounting frame, each display screen mounting frame comprises a first mounting side and a second mounting side, at least one radian lock assembly is arranged on the first mounting side of each display screen mounting frame, and at least one radian lock assembly is arranged on the second mounting side of each display screen mounting frame. At least one U-shaped lock assembly is arranged on the second installation side of the display screen installation frame, and the adjacent display screen installation frames are connected in a matched mode through the radian lock assemblies and the U-shaped lock assemblies. A display screen box frame for installing the LED display module is designed to be identical unit modules, and classification is not needed in the installation, disassembly and transportation processes; the display screen mounting frames of the adjacent unit modules are connected in a matched mode through the radian lock assemblies and the U-shaped lock assemblies, the U-shaped lock assemblies and the radian lock assemblies are matched to guarantee the connecting strength, stability and mounting / dismounting operation efficiency of an LED display screen overall mounting system, and the radian lock assemblies are adjusted to achieve the splicing radian of a large LED display screen.

Description

Technical Field

[0001] The utility model relates to a left - right connection device for an LED display box frame, belonging to the technical field of large - scale LED display assembly equipment. Background Art

[0002] A large - scale LED display needs to be formed by splicing and assembling multiple modular LED display modules. The LED display box frame of this solution is used to fix each LED display module and splice and assemble all LED display modules into a large - scale LED display.

[0003] The existing connection structure of the LED display box frame usually uses conventional connection methods such as bolts, resulting in extremely large assembly workload for large - scale LED displays. And since the assembly work may also involve working at heights, the extremely large workload will also bring high risks during the assembly process. Therefore, the existing assembly method of the LED display box frame needs to be improved urgently. Summary of the Invention

[0004] Aiming at the deficiencies of the above - mentioned existing technologies, the purpose of the utility model is to provide a left - right connection device for an LED display box frame.

[0005] According to an embodiment of the utility model, the first solution is as follows: A left - right connection device for an LED display box frame includes a display installation frame. An LED display can be installed on each display installation frame. The display installation frame includes a first installation side and a second installation side. At least one arc lock assembly is arranged on the first installation side of the display installation frame, and at least one U - shaped lock assembly is arranged on the second installation side of the display installation frame. Adjacent display installation frames are connected by the cooperation of the arc lock assembly and the U - shaped lock assembly.

[0006] Further, the arc lock assembly includes a first docking plate, and the U - shaped lock assembly includes a second docking plate that cooperates with the first docking plate. The arc lock can adjust the angle of the first docking plate relative to the display installation frame. In the locked connection state of adjacent display installation frames, the first docking plate and the second docking plate are in close contact. [[ID=--]]

[0007] Further, at least one positioning pin is arranged on the first docking plate, and positioning grooves that are adapted to the positions and quantities of the positioning pins are arranged on the second docking plate. In the pre - splicing state of adjacent display installation frames, the positioning pins are inserted into the positioning grooves to limit the relative displacement of the first docking plate and the second docking plate.

[0008] Further, define one surface of the display installation frame facing the LED display as the connection surface. The second docking plate of the U - shaped lock assembly is perpendicular to the connection surface. When the arc lock assembly is adjusted to 0 degrees, the first docking plate is perpendicular to the connection surface.

[0009] Further, the arc lock assembly includes a locking buckle. In the open state of the locking buckle, the adjustable angles of the arc lock assembly include: -7.5°, -5°, -2.5°, 0°, 2.5°, 5°, 7.5°.

[0010] Further, the U-shaped lock assembly includes a lock body, a U-shaped connecting rod, a handle, and a safety buckle. The arc lock assembly includes a locking groove that cooperates with the U-shaped connecting rod.

[0011] Further, the lock body is connected to the display screen mounting frame through a first rotating shaft, and the U-shaped connecting rod is connected to the lock body through a second rotating shaft. In the pre-splicing state of adjacent display screen mounting frames, open the safety buckle, rotate the U-shaped connecting rod of the U-shaped lock assembly along the first rotation direction so that the U-shaped end is limited in the locking groove of the arc lock assembly, and drive the U-shaped connecting rod along the second rotation direction through the handle to reverse the second connecting shaft end into the locking position, forming a locked connection state of adjacent display screen mounting frames, where the second rotation direction is opposite to the first rotation direction.

[0012] Further, the overall area of the display screen mounting frame is slightly smaller than the area of the LED display screen.

[0013] Further, at least one positioning pin is provided on the first mounting side of the display screen mounting frame, and a positioning groove that matches the number, position, and structure of the positioning pins is provided on the second mounting side of the display screen mounting frame.

[0014] According to the implementation scheme of the present invention, using the left-right connection device for the display screen box frame in the first scheme provided by the present invention, the second scheme is provided as:

[0015] An overall installation system for an LED display screen, including any one of the above-mentioned left-right connection devices for the display screen box frame.

[0016] Compared with the prior art, the beneficial effects of the independent claim of the technical solution provided in this application are:

[0017] First, the display screen box frame for installing the LED display module is designed as completely identical unit modules, so there is no need to distinguish between left and right positions, and there is no need to classify during installation, removal, and transportation, nor will there be misoperations caused by incorrect distinction.

[0018] Secondly, the display screen box frame of each unit module is divided into a first installation side and a second installation side. The first installation side and the second installation side cooperate with each other. When correctly divided into the connection surface facing the LED display screen, the first installation side of each unit module faces the second installation side of the adjacent unit module, and the second installation side of each unit module also faces the first installation side of another adjacent unit module. In the overall installation system of the LED display screen, the installation and removal operations of each unit module are the same, the efficiency of the operator's repeated operations can be guaranteed, and the consistency of operation can also reduce the probability of incorrect operation;

[0019] Secondly, the display screen mounting frames of adjacent unit modules are connected through the arc lock assembly and the U-lock assembly. The U-lock assembly and the arc lock assembly cooperate to ensure the connection strength, stability and installation / removal efficiency of the overall installation system of the LED display screen. The arc lock assembly adjusts the splicing angle between the adjacent LED display screen box frames, thereby realizing the splicing curvature of the large LED display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 these drawings without paying any creative work.

[0021] in:

[0022] Figure 1 A schematic structural diagram of a display screen mounting frame in one embodiment;

[0023] Figure 2 A schematic diagram of connecting adjacent display screen mounting frames in one embodiment;

[0024] Figure 3 A schematic diagram of the structure of an arc lock assembly and a U-shaped lock assembly in one embodiment;

[0025] Figure 4 Schematic diagram of the connection between the arc lock assembly and the U-shaped lock assembly in one embodiment.

[0026] Figure 5 Flowchart of a method for installing left and right connection devices of an LED display cabinet frame in one embodiment.

[0027] Reference numerals:

[0028] 100 - Display screen mounting frame; 10 - Arc lock assembly; 101 - First docking plate; 102 - Locking buckle; 103 - Locking groove; 20 - U-shaped lock assembly; 201 - Second docking plate; 202 - Lock body; 203 - U-shaped connecting rod; 204 - Handle; 205 - Safety buckle; 207 - First rotating shaft; 208 - Second rotating shaft. Detailed implementation manner

[0029] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0030] Embodiment 1

[0031] This solution relates to an assembly and splicing device for a large LED display screen system. Large LED display screens usually use multiple small modular LED display modules (small LED display screens). In many scenarios, large LED display screens need to be quickly assembled and disassembled. For example, concerts held in stadiums are rented by time. During the stage construction process, the installation time and removal time of the large LED display screen will be included in the rental time. How to quickly complete the installation or disassembly within a limited time while ensuring the installation accuracy and stability of the large LED display screen is extremely difficult to achieve. A relatively conservative and stable installation or disassembly process means that more venue time needs to be rented and the cost is higher.

[0032] In order to improve the installation or disassembly rate of the large LED display screen, the existing solution is to pre-fix the small LED display modules of the large LED display screen on the display screen mounting frame 100, and realize the quick splicing of the LED display modules through the splicing of the display screen mounting frame 100 on site. However, the splicing operation of the existing display screen mounting frame 100 is relatively complex, resulting in insufficient installation efficiency. Due to the limited on-site operation time, it not only causes great work pressure on the operators, but also is prone to installation errors and high-altitude operation risks due to the high operation difficulty and workload.

[0033] To solve the above problems, this embodiment provides a left-right connection device for the LED display screen box frame, including a display screen mounting frame 100. An LED display screen can be installed on each display screen mounting frame 100, such as Figure 1As shown in the figure, the display screen mounting frame 100 includes a first mounting side (in the F1 direction) and a second mounting side (in the F2 direction). At least one arc lock assembly 10 is provided on the first mounting side of the display screen mounting frame 100, and at least one U-shaped lock assembly 20 is provided on the second mounting side of the display screen mounting frame 100. Adjacent display screen mounting frames 100 are cooperatively connected through the arc lock assembly 10 and the U-shaped lock assembly 20.

[0034] Through the left and right connection device of the LED display screen box frame of this embodiment, the display screen box frame for installing the LED display module is designed as completely identical unit modules. In this way, there is no need to distinguish between the left and right positions, and no classification is required during installation, removal, and transportation, nor will there be misoperations caused by incorrect distinction; the display screen box frame of each unit module is divided into a first mounting side and a second mounting side, and the first mounting side and the second mounting side cooperate with each other. When correctly distinguished as the connection surface facing the LED display screen, the first mounting side of each unit module faces the second mounting side of the adjacent unit module, and the second mounting side of each unit module also faces the first mounting side of another adjacent unit module. In the overall installation system of the LED display screen, the installation and removal operations of each unit module are the same, and the operation efficiency of the operator's repeated operations can be guaranteed, and the consistent operation can also reduce the probability of misoperation; the display screen mounting frames 100 of adjacent unit modules are cooperatively connected through the arc lock assembly 10 and the U-shaped lock assembly 20. The cooperation between the U-shaped lock assembly 20 and the arc lock assembly 10 ensures the connection strength, stability, and installation / removal operation efficiency of the overall installation system of the LED display screen. The arc lock assembly 10 adjusts the splicing angle between adjacent LED display screen box frames, thereby realizing the splicing arc of the large LED display screen.

[0035] Specifically, the arc lock assembly 10 includes a first docking plate 101, and the U-shaped lock assembly 20 includes a second docking plate 201 that cooperates with the first docking plate 101. The arc lock can adjust the angle of the first docking plate 101 relative to the display screen mounting frame 100. In the locked connection state of adjacent display screen mounting frames 100, the first docking plate 101 and the second docking plate 201 are closely attached.

[0036] Adjacent display screen mounting frames 100 are connected through the arc lock assembly 10 and the U-shaped lock assembly 20. Therefore, it is necessary to design new arc lock assemblies 10 and U-shaped lock assemblies 20 to simplify the disassembly and assembly operation process between the display screen mounting frames 100, increase the connection strength between the display screen mounting frames 100, and achieve the angular connection between the display screen mounting frames 100, and realize the splicing of the curved LED display screen through the angular connection between the display screen mounting frames 100. This solution is extremely difficult to implement.

[0037] To achieve the quick connection between the radian lock component 10 and the U-shaped lock component 20, in this embodiment, the U-shaped lock component 20 is designed to include a lock body 202, a U-shaped connecting rod 203, a handle 204, and a safety buckle 205. At the same time, the radian lock component 10 includes a locking groove 103 that cooperates with the U-shaped connecting rod 203. The connection and disassembly between adjacent display screen mounting frames 100 are realized as simple operations of inserting the U-shaped connecting rod 203 into the locking groove 103 and taking it out of the locking groove 103. At the same time, when adjusting the angle of the first docking plate 101 of the radian lock to adjust the connection angle of adjacent display screen mounting frames 100, it does not affect the operation of inserting and taking out the U-shaped connecting rod 203 from the locking groove 103 at all.

[0038] Specifically, the second docking plate 201 can be connected to the lock body of the U-shaped lock component 20, or the second docking plate 201 is fixedly arranged on the display screen mounting frame 100.

[0039] Specifically, the lock body 202 is connected to the display screen mounting frame 100 through a first rotating shaft 207, and the U-shaped connecting rod 203 is connected to the lock body 202 through a second rotating shaft 208. In the pre-splicing state of adjacent display screen mounting frames 100, open the safety buckle 205, rotate the U-shaped connecting rod 203 of the U-shaped lock component 20 along the first rotation direction so that the U-shaped end is limited in the locking groove 103 of the radian lock component 10, and drive the U-shaped connecting rod 203 along the second rotation direction through the handle 204 to reverse the second connecting shaft end into the lock position, forming a locked connection state of adjacent display screen mounting frames 100, where the second rotation direction is opposite to the first rotation direction.

[0040] To achieve the connection strength between the display screen mounting frames 100, the radian lock component 10 and the U-shaped lock component 20 are butt-connected, and the stable connection between the brackets of adjacent display screen mounting frames 100 is realized through the cooperation between the first docking plate 101 and the second docking plate 201. The radian lock component 10 includes a first docking plate 101, the U-shaped lock component 20 includes a second docking plate 201 that cooperates with the first docking plate 101, and the radian lock can adjust the angle of the first docking plate 101 relative to the display screen mounting frame 100. In the locked connection state of adjacent display screen mounting frames 100, the first docking plate 101 and the second docking plate 201 are closely attached.

[0041] In addition, at least one positioning pin is provided on the first docking plate 101, and positioning grooves adapted to the positions and quantities of the positioning pins are provided on the second docking plate 201. In the pre-splicing state of adjacent display screen mounting frames 100, insert the positioning pins into the positioning grooves to limit the relative displacement between the first docking plate 101 and the second docking plate 201. The matching structure of the positioning pins and the positioning grooves facilitates the correct splicing of adjacent display screen mounting frames 100 in the pre-splicing state of adjacent display screen mounting frames 100.

[0042] To achieve the angular connection between the display screen mounting frames 100, in this embodiment, a first docking plate 101 is connected to the arc lock, and a second docking plate 201 is arranged in the U-shaped lock assembly 20 arranged on the second installation side of the display screen mounting frame 100. A surface of the display screen mounting frame 100 facing the LED display screen is defined as the connection surface. The second docking plate 201 of the U-shaped lock assembly 20 is perpendicular to the connection surface. When the arc lock assembly 10 is adjusted to 0 degrees, the first docking plate 101 is perpendicular to the connection surface.

[0043] Specifically, the arc lock assembly 10 includes a locking buckle 102. In the open state of the locking buckle 102, the adjustable angles of the arc lock assembly 10 include: -7.5°, -5°, -2.5°, 0°, 2.5°, 5°, 7.5°. By adjusting the arc lock, the included angle range between the first docking plate 101 and the connection surface includes: -7.5°, -5°, -2.5°, 0°, 2.5°, 5°, 7.5°, so as to realize the adjustment of the included angle range between adjacent display modules of the large LED display screen within: -7.5°, -5°, -2.5°, 0°, 2.5°, 5°, 7.5°. That is, the arc-shaped LED display screen is realized through preliminary calculation as the arc adjustment of the arc lock assembly 10, and the accurate arc adjustment is realized through the arc scale on the arc lock and the positioning of the arc adjustment teeth of the arc lock. Finally, during the rapid installation process of the display screen mounting frame 100, the operator can quickly realize the splicing of the arc-shaped LED display screen by adjusting the arc of the arc lock at the required position.

[0044] Specifically, the overall area of the display screen mounting frame 100 is slightly smaller than the area of the LED display screen. That is, after the adjacent display screen mounting frames 100 are connected, there are gaps between the display screen mounting frames 100, but the front-end LED display screens are closely spliced.

[0045] To achieve the rapid, accurate and convenient connection of adjacent display screen mounting frames 100, at least one positioning pin is further arranged on the first installation side of the display screen mounting frame 100, and a positioning groove matching the number, position and structure of the positioning pins is arranged on the second installation side of the display screen mounting frame 100.

[0046] Embodiment Two

[0047] This embodiment provides a method for connecting the left and right of an LED display screen box frame, including the steps:

[0048] S1: Obtain the display screen mounting frame 100;

[0049] An LED display screen can be installed on the display screen mounting frame 100. The display screen mounting frame 100 includes a first mounting side and a second mounting side. At least one arc lock assembly 10 is provided on the first mounting side of the display screen mounting frame 100, and at least one U-shaped lock assembly 20 is provided on the second mounting side of the display screen mounting frame 100;

[0050] S2: Move the display screen mounting frame 100 to the pre-splicing position of the existing fixed display screen mounting frame;

[0051] The pre-splicing position is the first mounting side or the second mounting side of the existing display screen mounting frame;

[0052] When the pre-splicing position is the first mounting side of the existing display screen mounting frame, the second mounting side of the display screen mounting frame 100 approaches the pre-splicing position. When the pre-splicing position is the second mounting side of the existing display screen mounting frame, the first mounting side of the display screen approaches the pre-splicing position;

[0053] S3: The positioning pin of the display screen mounting frame 100 cooperates with the positioning groove of the existing display screen mounting frame to make the display screen mounting frame 100 accurately approach the existing display screen mounting frame. When the positioning pin is inserted into the corresponding positioning groove, accurate splicing between the display screen mounting frame 100 and the existing display screen mounting frame is achieved;

[0054] S4: The first docking plate 101 of the arc lock assembly 10 and the second docking plate 201 of the U-shaped lock assembly 20 achieve accurate splicing between the first docking plate 101 and the second docking plate 201 through the cooperation between the positioning pin and the positioning groove;

[0055] S5: Open the locking buckle 102 of the arc lock assembly 10, adjust the splicing angle between the existing display screen mounting frame and the display screen mounting frame 100 according to the design requirements, and lock the locking buckle 102;

[0056] S6: Open the safety buckle 205 of the U-shaped lock assembly 20, buckle the U-shaped connecting rod 203 into the locking groove 103 of the arc lock assembly 10 and fixedly connect the first splicing plate and the second splicing plate, and lock the safety buckle 205;

[0057] Specifically, open the safety buckle 205, rotate the U-shaped connecting rod 203 of the U-shaped lock assembly 20 in the first rotation direction so that the U-shaped end is limited in the locking groove 103 of the arc lock assembly 10, and drive the U-shaped connecting rod 203 to rotate in the second rotation direction through the handle 204 so that the second connecting shaft end reversely rotates into the locked position, forming a locked connection state between adjacent display screen mounting frames 100, where the second rotation direction is opposite to the first rotation direction.

[0058] It also includes steps:

[0059] For S7, the reverse operation can be used to remove the display installation frame 100 from the existing display installation frame.

[0060] The display cabinet frame for installing the LED display module is designed as completely identical unit modules, so there is no need to distinguish between left and right positions. During installation, removal, and transportation, no classification is required, and incorrect distinction will not cause misoperation.

[0061] The display cabinet frame of each unit module is divided into a first installation side and a second installation side. The first installation side and the second installation side cooperate with each other. When correctly distinguished as the connection surface facing the LED display, the first installation side of each unit module faces the second installation side of the adjacent unit module, and the second installation side of each unit module also faces the first installation side of another adjacent unit module. In the overall installation system of the LED display, the installation and removal operations of each unit module are the same, which can ensure the operation efficiency of the operator's repeated operations, and consistent operations can also reduce the probability of misoperation; the display installation frames 100 of adjacent unit modules are connected by the cooperation of the arc lock assembly 10 and the U-shaped lock assembly 20. The cooperation of the U-shaped lock assembly 20 and the arc lock assembly 10 ensures the connection strength, stability, and installation / removal operation efficiency of the overall installation system of the LED display. The arc lock assembly 10 adjusts the splicing angle between adjacent LED display cabinet frames, thereby realizing the splicing arc of the large LED display.

[0062] Embodiment 3

[0063] An overall installation system for an LED display includes the left-right connection device of the display cabinet frame as described in any of the above.

[0064] The display cabinet frame for installing the LED display module is designed as completely identical unit modules, so there is no need to distinguish between left and right positions. During installation, removal, and transportation, no classification is required, and incorrect distinction will not cause misoperation.

[0065] The display cabinet frame of each unit module of the overall LED display installation system is divided into a first installation side and a second installation side. The first installation side and the second installation side cooperate with each other. When correctly distinguished as the connection surface facing the LED display, the first installation side of each unit module faces the second installation side of the adjacent unit module, and the second installation side of each unit module also faces the first installation side of another adjacent unit module. In the overall LED display installation system, the installation and removal operations of each unit module are the same, which can ensure the operation efficiency of the operator's repeated operations, and the consistent operation can also reduce the probability of misoperation; the display installation frames 100 of adjacent unit modules are connected by the cooperation of the arc lock assembly 10 and the U-shaped lock assembly 20. The cooperation between the U-shaped lock assembly 20 and the arc lock assembly 10 ensures the connection strength, stability and installation / removal operation efficiency of the overall LED display installation system. The arc lock assembly 10 adjusts the splicing angle between adjacent LED display cabinet frames, thereby realizing the splicing arc of the large LED display.

[0066] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification. The above embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application.

[0067] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly disposed on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meanings of "a plurality" and "several" are two or more, unless otherwise specifically defined.

[0069] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementable conditions of the present application. Therefore, they do not have any technical substantial meaning. Any modification of the structure, change of the ratio relationship or adjustment of the size, without affecting the effects that the present application can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present application.

Claims

1. A left - right connection device for an LED display box frame, characterized in that, It includes a display screen mounting frame, and an LED display screen can be mounted on each display screen mounting frame. The display screen mounting frame includes a first mounting side and a second mounting side. At least one arc lock assembly is provided on the first mounting side of the display screen mounting frame, and at least one U-shaped lock assembly is provided on the second mounting side of the display screen mounting frame. Adjacent display screen mounting frames are cooperatively connected through the arc lock assembly and the U-shaped lock assembly.

2. The left and right connection device of the LED display box frame according to claim 1, wherein: The arc lock assembly includes a first docking plate, and the U-shaped lock assembly includes a second docking plate that cooperates with the first docking plate. The arc lock can adjust the angle of the first docking plate relative to the display screen mounting frame. In the locked connection state of adjacent display screen mounting frames, the first docking plate and the second docking plate are closely attached.

3. The left and right connection device of the LED display box frame according to claim 2, characterized in that: At least one positioning pin is provided on the first docking plate, and positioning grooves that are adapted to the positions and quantities of the positioning pins are provided on the second docking plate. In the pre-splicing state of adjacent display screen mounting frames, the positioning pins are inserted into the positioning grooves to limit the relative displacement between the first docking plate and the second docking plate.

4. The left and right connection device of the LED display box frame according to claim 2, characterized in that: Define one surface of the display screen mounting frame facing the LED display screen as the connection surface. The second docking plate of the U-shaped lock assembly is perpendicular to the connection surface. When the arc lock assembly is adjusted to 0 degrees, the first docking plate is perpendicular to the connection surface.

5. The left and right connection device for the LED display box frame according to claim 4, characterized in that: The arc lock assembly includes a locking buckle. In the open state of the locking buckle, the adjustable angles of the arc lock assembly include: -7.5°, -5°, -2.5°, 0°, 2.5°, 5°, 7.5°.

6. The left and right connection device of the LED display box frame according to claim 1, characterized in that: The U-shaped lock assembly includes a lock body, a U-shaped connecting rod, a handle, and a safety buckle. The arc lock assembly includes a locking groove that cooperates with the U-shaped connecting rod.

7. The left and right connection device of the LED display box frame according to claim 6, characterized in that: The lock body is connected to the display screen mounting frame through a first rotating shaft, and the U-shaped connecting rod is connected to the lock body through a second rotating shaft. In the pre-splicing state of adjacent display screen mounting frames, the safety buckle is opened, and the U-shaped connecting rod of the U-shaped lock assembly is rotated in a first rotation direction so that the U-shaped end is limited in the locking groove of the arc lock assembly. The second rotating shaft is driven by the handle to drive the U-shaped connecting rod to rotate in a second rotation direction so that the second connecting shaft end is reversely rotated into the locked position, forming a locked connection state of adjacent display screen mounting frames, wherein the second rotation direction is opposite to the first rotation direction.

8. The left and right connection device of the LED display box frame according to claim 1, characterized in that: The overall area of the display screen mounting frame is slightly smaller than the area of the LED display screen.

9. The left and right connection device of the LED display box frame according to claim 1, characterized in that: At least one positioning pin is further provided on the first mounting side of the display screen mounting frame, and positioning grooves that match the quantity, position, and structure of the positioning pins are further provided on the second mounting side of the display screen mounting frame.

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