LED display box group connecting device and LED display device

Abstract

This application relates to the field of LED display equipment technology, and provides an LED display cabinet assembly connection device and an LED display device. The LED display cabinet assembly connection device includes: a main body, disposed at the rear end of the LED display cabinet assembly, forming a clamping space between the main body and the LED display cabinet assembly for clamping and fixing a frame; a first connecting structure and a second connecting structure disposed on the main body; a front connecting part, the control end of which is located at the front end of the LED display cabinet assembly, extending from the front end to the rear end of the LED display cabinet assembly, with both ends connected to the first connecting structure and the LED display cabinet assembly respectively; and a rear connecting part, the control end of which is located at the rear end of the LED display cabinet assembly, extending from the rear end to the front end of the LED display cabinet assembly, with both ends connected to the second connecting structure and the LED display cabinet assembly respectively. This avoids the drawbacks of traditional front and rear installations requiring different connecting pieces, greatly improving versatility.

Description

Technical Field

[0001] This application belongs to the field of LED display equipment technology, and more specifically, relates to an LED display box assembly connection device and an LED display device. Background Technology

[0002] In the installation of LED displays between the cabinet and the steel structure frame, there are mainly two scenarios: front mounting and rear mounting. Both involve fixing the cabinet to the square tube (frame) with screws through connecting plates. However, existing front mounting connecting plates use a double-layer structure, with one layer fixing the cabinet and the other clamping the square tube. The double-layer structure needs to be locked to the square tube with screws, which results in cumbersome operation, a large number of parts, and high material costs. Rear mounting connecting plates are attached to the cabinet with screws to clamp the square tube, but their structure is completely independent of the front mounting connecting plates and cannot be shared. This requires separate management of the two types of connecting plates during design, production, and installation, which is not only inconvenient to use but also increases the overall cost due to redundant design and material preparation.

[0003] The core shortcoming of existing technology lies in the excessive complexity of the front mounting structure and the lack of universality of the front and rear mounting connectors, which increases material and process costs, and also leads to increased efficiency and costs due to cumbersome operation procedures and difficulty in classification and management. Utility Model Content

[0004] The purpose of this application is to provide an LED display box assembly connection device and an LED display device to solve the problem of poor universality of connectors between LED display box assemblies and mounting frames in the prior art.

[0005] To achieve the above objectives, according to one aspect of this application, an LED display box assembly connection device is provided, used for connecting an LED display box assembly and a mounting frame. The front end of the LED display box assembly is one end for mounting an LED display screen, and the other end opposite the front end is the rear end of the LED display box assembly. The LED display box assembly connection device includes: a main body disposed at the rear end of the LED display box assembly, forming a clamping space between the main body and the LED display box assembly for clamping the mounting frame; a first connecting structure and a second connecting structure are provided on the main body; a front connecting portion, the control end of which is located at the front end of the LED display box assembly, extending from the front end to the rear end of the LED display box assembly, with both ends of the front connecting portion connected to the first connecting structure and the LED display box assembly respectively; and a rear connecting portion, the control end of which is located at the rear end of the LED display box assembly, extending from the rear end to the front end of the LED display box assembly, with both ends of the rear connecting portion connected to the second connecting structure and the LED display box assembly respectively.

[0006] Optionally, there are multiple front connecting parts, which are located on both sides of the clamping space. There are also multiple first connecting structures, and the positions of the multiple first connecting structures correspond to the positions of the multiple front connecting parts.

[0007] Optionally, there are multiple rear connecting parts, which are located on both sides of the clamping space, and multiple second connecting structures, the positions of which correspond to the positions of the multiple rear connecting parts.

[0008] Optionally, the LED display box assembly is provided with a plurality of first through holes, the positions of the plurality of first through holes corresponding to the positions of a plurality of first connecting structures, the front connecting part includes a first screw, the first connecting structure is a first threaded hole, the first screw is screwed into the first threaded hole through the first through hole to connect the LED display box assembly and the main body.

[0009] Optionally, the main body has multiple positioning protrusions on the side near the LED display box assembly, and positioning space is formed between the multiple positioning protrusions, with the fixing frame part embedded in the positioning space.

[0010] Optionally, the positioning protrusion includes an annular protrusion, and multiple annular protrusions are configured to correspond one-to-one with multiple first threaded holes, with the annular protrusions arranged circumferentially along the first threaded holes.

[0011] Optionally, the LED display box assembly is provided with a plurality of second threaded holes, the positions of which correspond to the positions of a plurality of second connecting structures. The rear connecting part includes a second screw, and the second connecting structure is a second through hole. The second screw is screwed into the second threaded hole through the second through hole to connect the LED display box assembly and the main body.

[0012] Optionally, the second through hole is an elliptical hole.

[0013] Optionally, the main body is provided with multiple weight-reducing parts.

[0014] According to another aspect of this application, an LED display device is provided, which includes an LED display box assembly, a mounting frame, and an LED display box assembly connecting device, wherein the LED display box assembly connecting device is the aforementioned LED display box assembly connecting device.

[0015] The beneficial effects of the LED display box assembly connection device provided in this application are as follows: Compared with the prior art, the LED display box assembly connection device in the embodiments of this application effectively overcomes the shortcomings of the prior art through innovative structure and achieves significant technical effects. Firstly, the clamping space formed by the main body and the LED display cabinet, along with the front and rear connecting parts, can simultaneously adapt to both front-mounted and rear-mounted scenarios. The front connecting part is operated from the front of the LED display cabinet for front-mounted fixation, while the rear connecting part is operated from the rear for rear-mounted fixation. This avoids the drawbacks of traditional front and rear installations requiring different connecting pieces, greatly improving versatility, reducing the types of parts, and lowering design, production, and inventory management costs. Secondly, this structure abandons the complex double-layer structure of existing front-mounted connecting pieces, simplifying the installation process. Through the control end design of the front and rear connecting parts, the connection between the cabinet and the mounting frame can be completed more simply, whether operated from the front or rear, shortening installation time and improving installation efficiency. Thirdly, when the installation space is ample, the front and rear connecting parts can simultaneously cooperate with the first and second connecting structures on the main body, ensuring connection stability. While reducing costs and simplifying operations, it still ensures the reliability of the connection between the LED display cabinet and the mounting frame, effectively meeting the needs of the LED display installation field for efficient, low-cost, and stable connections. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the front-mounted connection between the LED display module and the mounting frame in an embodiment of this application.

[0018] Figure 2 for Figure 1 Enlarged view of region A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure in which the LED display module and the mounting frame are connected by a rear-mounting method in an embodiment of this application.

[0020] Figure 4 for Figure 3 Enlarged view of region B in the middle;

[0021] Figure 5 This is a schematic diagram of the LED display box assembly connection device according to an embodiment of this application;

[0022] Figure 6This is a structural schematic diagram of the LED display box assembly connection device according to an embodiment of this application from another angle;

[0023] The details of the reference numerals used in the above figures are as follows:

[0024] 1. LED display module; 101. First through hole; 2. Mounting bracket;

[0025] 10. Main body; 11. First connecting structure; 111. First threaded hole; 12. Second connecting structure; 121. Second through hole; 13. Weight reduction part; 14. Annular boss;

[0026] 20. Front connecting part;

[0027] 30. Rear connecting part; Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly or indirectly on that other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to that other element. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] As described in the background section, the installation of LED displays between the cabinet and the steel structure frame mainly falls into two scenarios: front mounting and rear mounting. In both cases, the cabinet is fixed to the square tube (frame) by screws passing through connecting plates. However, existing front mounting connecting plates use a double-layer structure, with one layer fixing the cabinet and the other clamping the square tube. The double-layer structure needs to be locked to the square tube with screws, which results in cumbersome operation, a large number of parts, and high material costs. Rear mounting connecting plates are attached to the cabinet with screws to clamp the square tube, but their structure is completely independent of the front mounting connecting plates and cannot be shared. This requires separate management of the two types of connecting plates during design, production, and installation, which is not only inconvenient to use but also increases the overall cost due to redundant design and material preparation.

[0033] The core shortcoming of existing technology lies in the excessive complexity of the front mounting structure and the lack of universality of the front and rear mounting connectors, which increases material and process costs, and also leads to increased efficiency and costs due to cumbersome operation procedures and difficulty in classification and management.

[0034] To solve the above problem, see Figures 1 to 6 As shown in the figure, the LED display box assembly connecting device in this embodiment of the application is used to connect the LED display box assembly and the fixing frame 2. The front end of the LED display box assembly is the end for mounting the LED display screen, and the other end opposite to the front end of the LED display box assembly is the rear end of the LED display box assembly. The LED display box assembly connecting device includes: a main body 10, a front connecting part 20 and a rear connecting part 30. The main body 10 is disposed at the rear end of the LED display box assembly and forms a clamping space between itself and the LED display box assembly for clamping the fixing frame 2. The main body 10 is provided with a first connecting structure 11 and a second connecting structure 12. The control end of the front connecting part 20 is located at the front end of the LED display box assembly. The front connecting part 20 extends from the front end of the LED display box assembly to the rear end of the LED display box assembly. The two ends of the front connecting part 20 are respectively connected to the first connecting structure 11 and the LED display box assembly. The control end of the rear connecting part 30 is located at the rear end of the LED display box assembly. The rear connecting part 30 extends from the rear end of the LED display box assembly to the front end of the LED display box assembly. The two ends of the rear connecting part 30 are respectively connected to the second connecting structure 12 and the LED display box assembly.

[0035] It should be noted that an LED display cabinet is a cabinet unit that does not contain an LED display screen. As an important component of an LED display system, it typically integrates functional components such as electrical drive modules and power supply modules. Its main function is to support and protect related electrical components, provide electrical connection and power support for the LED display screen, and is the basic structural unit for achieving stable operation of the LED display system.

[0036] The fixing frame 2 refers to a steel structure frame made of materials such as metal square tubes, which is used to support and fix the LED display box assembly. Its main function is to provide a stable installation foundation for the LED display box assembly, ensuring that the LED display box assembly remains stable during use, while bearing the weight and external forces from the LED display box assembly and its auxiliary equipment. The LED display box assembly connecting device in this embodiment is used to connect and fix the LED display box assembly to the fixing frame 2, such as metal square tubes. The clamping space is the space area formed between the main body 10 and the LED display box assembly, used to accommodate and clamp the fixing frame 2, so that the fixing frame 2 can be stably installed on the LED display box assembly, ensuring the reliability and stability of the connection. The first connecting structure 11 and the second connecting structure 12 refer to the structures provided on the main body 10, used to connect with the front connecting part 20 and the rear connecting part 30 respectively. These structures can be in the form of threaded holes, slots, buckles, etc., and by cooperating with the front and rear connecting parts 30, they realize the fastening and positioning of the fixing frame 2.

[0037] The control end of the front connection part 20 is located at the front end of the LED display box assembly, and can pass from the front end to the rear end of the LED display box assembly. Its two ends are respectively connected to the first connection structure 11 on the main body 10 and the LED display box assembly. During the front installation operation, the LED display box assembly and the mounting frame 2 can be quickly and stably connected by operating the control end of the front connection part 20.

[0038] The control end of the rear connection part 30 is located at the rear end of the LED display box assembly, extending from the rear end to the front end. Both ends are connected to the second connection structure 12 on the main body 10 and the LED display box assembly, respectively. This is used to achieve rear installation of the LED display box assembly. By operating the control end of the rear connection part 30, the connection and fixation between the LED display box assembly and the mounting bracket 2 during the final installation process can be easily completed.

[0039] The LED display box assembly connection device in this application embodiment effectively overcomes the shortcomings of the prior art through its innovative structure, achieving significant technical effects. Firstly, the clamping space formed by the main body 10 and the LED display cabinet, along with the front and rear connecting parts 30, can simultaneously adapt to both front-mounted and rear-mounted scenarios. The front connecting part 20 is operated from the front of the LED display cabinet for front-mounted fixation, while the rear connecting part 30 is operated from the rear for rear-mounted fixation. This avoids the drawbacks of traditional front and rear installations requiring different connecting pieces, greatly improving versatility, reducing the types of parts, and lowering design, production, and inventory management costs. Secondly, this structure abandons the complex double-layer structure of existing front-mounted connecting pieces, simplifying the installation process. Through the control end design of the front and rear connecting parts 30, the connection between the cabinet and the mounting frame 2 can be completed more simply, whether operated from the front or rear, shortening installation time and improving installation efficiency. Thirdly, when the installation space is ample, the front and rear connecting parts 30 can simultaneously cooperate with the first and second connecting structures 12 on the main body 10, ensuring connection stability. While reducing costs and simplifying operations, it still ensures the reliability of the connection between the LED display cabinet and the mounting frame 2, effectively meeting the needs of the LED display installation field for efficient, low-cost, and stable connections.

[0040] In this embodiment, there are multiple front connecting parts 20, each located on one side of the clamping space. There are also multiple first connecting structures 11, with their positions corresponding to the positions of the multiple front connecting parts 20. By setting multiple front connecting parts 20 and distributing them on both sides of the clamping space, and simultaneously setting multiple first connecting structures 11, a multi-dimensional and balanced connection and fixing effect can be achieved. On one hand, the multiple front connecting parts 20 work together from both sides of the clamping space, significantly enhancing the clamping force on the fixing frame 2, effectively preventing instability such as shaking or shifting of the fixing frame 2 after installation, and greatly improving the reliability and stability of the connection between the LED display box assembly and the fixing frame 2. On the other hand, the multi-connection point design disperses the force between the fixing frame 2 and the LED display box assembly, reducing the risk of structural damage caused by excessive force at a single point and extending the service life of the connection device.

[0041] In this embodiment, there are multiple rear connecting parts 30, which are respectively located on both sides of the clamping space. There are also multiple second connecting structures 12, with their positions corresponding to the positions of the rear connecting parts 30. In this embodiment, placing multiple rear connecting parts 30 on both sides of the clamping space and correspondingly providing multiple second connecting structures 12 significantly improves the connection performance between the LED display assembly and the mounting bracket 2. Firstly, the multiple rear connecting parts 30 exert force collaboratively from both sides of the clamping space, forming a more uniform clamping force, effectively preventing loosening or displacement of the mounting bracket 2, greatly enhancing the stability and reliability of the connection under the rear-mounting method, and ensuring the stability of the LED display assembly during use. Secondly, the symmetrically distributed multiple rear connecting parts 30 and second connecting structures 12 can disperse the stress on the mounting bracket 2, avoiding structural damage caused by localized stress concentration and extending the service life of the connection device.

[0042] In this embodiment of the application, the LED display box assembly is provided with a plurality of first through holes 101. The positions of the plurality of first through holes 101 correspond to the positions of a plurality of first connecting structures 11. The front connecting part 20 includes a first screw. The first connecting structure 11 is a first threaded hole 111. The first screw is screwed into the first threaded hole 111 through the first through hole 101 to connect the LED display box assembly and the main body 10. The nut of the first screw is the control end of the first connecting structure 11, and the first nut is stopped by the first through hole 101 to realize the connection with the LED display box assembly. The corresponding arrangement of multiple first through holes 101 and first threaded holes 111 constructs a multi-point stable connection system, making the connection between the LED display box assembly and the main body 10 tighter and more secure. This effectively disperses the stress on the connection parts, reduces the risk of structural damage due to excessive stress at a single point, and significantly improves the overall stability and reliability of the connection device. Secondly, the connection method of screwing the first screw into the first threaded hole 111 is simple and convenient to operate, requiring no complicated tools or professional skills, greatly simplifying the installation process, improving installation efficiency, and reducing labor costs. Furthermore, the threaded connection structure has good disassembly, facilitating the later inspection, maintenance, or replacement of the LED display box assembly, effectively improving the maintainability of the equipment.

[0043] In this embodiment, the main body 10 has multiple positioning protrusions on the side near the LED display box assembly, forming a positioning space between them. The fixing frame 2 is partially embedded in the positioning space. The positioning protrusions and the positioning space constitute a precise limiting structure, which can quickly and accurately position the fixing frame 2 during installation, preventing the fixing frame 2 from shifting or misaligning during installation, greatly improving installation efficiency and reducing the time cost of repeated adjustments. After the fixing frame 2 is embedded in the positioning space, the multiple positioning protrusions surround and constrain the fixing frame 2 from multiple directions, effectively enhancing the stability of the fixing frame 2 after installation, reducing the risk of shaking or loosening, and ensuring the reliability of the connection between the LED display box assembly and the fixing frame 2.

[0044] The positioning protrusion in this embodiment includes an annular protrusion 14, with multiple annular protrusions 14 corresponding one-to-one with multiple first threaded holes 111. The annular protrusions 14 are arranged circumferentially along the first threaded holes 111. In this embodiment, the corresponding arrangement of the annular protrusions 14 and the first threaded holes 111 achieves multiple technical effects. The annular protrusions 14, arranged circumferentially along the first threaded holes 111, provide a stable support surface during the tightening of the first screw, avoiding local deformation caused by the screw tightening force, ensuring the reliability and stability of the threaded connection, and extending the service life of the connection structure. The one-to-one correspondence between the annular protrusions 14 and the first threaded holes 111 allows for rapid positioning during installation. Operators can accurately align the first threaded holes 111 by observing the position of the annular protrusions 14, significantly improving installation efficiency. Simultaneously, it enables quick and accurate positioning of the fixing bracket 2 during installation, preventing the fixing bracket 2 from shifting or misaligning during installation, greatly improving installation efficiency.

[0045] In this embodiment, the LED display box assembly is provided with multiple second threaded holes, the positions of which correspond to the positions of multiple second connecting structures 12. The rear connecting part 30 includes a second screw, and the second connecting structure 12 is a second through hole 121. The second screw is screwed into the second threaded hole through the second through hole 121 to connect the LED display box assembly and the main body 10. First, the multiple second threaded holes and the second through hole 121 are correspondingly arranged to form a multi-point fastening connection system, making the connection between the LED display box assembly and the main body 10 tighter and more secure. This can evenly distribute the force on the connection parts, avoid structural damage caused by single-point stress concentration, and significantly improve the stability and reliability of the connection device. Second, the connection method of screwing the second screw into the second threaded hole is simple and easy to operate, requiring no complicated tools or professional skills, greatly simplifying the post-installation process, shortening the installation time, and reducing labor costs. Furthermore, the threaded connection structure has good disassembly, which facilitates the later inspection, maintenance, or replacement of the LED display box assembly, effectively improving the maintainability of the equipment.

[0046] In this embodiment, the second through hole 121 is an elliptical hole. The elliptical hole has a major axis and a minor axis, providing some adjustment space for the installation of the second screw. This allows for slight positional deviations between the mounting bracket 2 and the LED display box assembly during installation, reducing the precision requirements during installation, making the installation operation more convenient, and improving installation efficiency. The structural characteristics of the elliptical hole can effectively compensate for changes in component dimensions caused by processing errors, thermal expansion and contraction, etc., ensuring proper fit between the second screw and the second threaded hole, avoiding connection difficulties or stress concentration caused by minor dimensional differences, and enhancing the stability and reliability of the connection device.

[0047] In this embodiment, the main body 10 is provided with multiple weight-reducing parts 13. In this embodiment, the main body 10 is provided with multiple weight-reducing parts 13 (preferably grooves). By opening grooves or hollow holes, the material usage of the main body 10 is directly reduced, effectively reducing the overall weight of the connecting device. This not only reduces raw material costs but also facilitates transportation and installation, reduces the operational burden on construction personnel, and improves installation efficiency. Secondly, the weight-reducing parts 13 do not have a substantial impact on the structural strength of the main body 10. Under the premise of ensuring a stable connection between the main body 10 and the LED display box assembly and the fixing frame 2, the goal of lightweighting is achieved.

[0048] According to another aspect of this application, an LED display device is provided, which includes an LED display box assembly, a mounting bracket 2, and an LED display box assembly connecting device, wherein the LED display box assembly connecting device is the aforementioned LED display box assembly connecting device. First, thanks to the universal design of the connecting device, this LED display device can flexibly adapt to both front-mounted and rear-mounted scenarios, avoiding the need to replace parts due to differences in installation methods, thus reducing the complexity and cost of engineering implementation. Second, the multi-point fastening structure (such as multiple front and rear connecting parts 30 cooperating with corresponding connecting structures) and positioning protrusions in the connecting device significantly improve the connection stability between the LED display box and the mounting frame 2, ensuring that the display device can withstand vibration and external impact during long-term use, reducing the risk of loosening and displacement, and extending the overall service life. Third, the convenient installation features of the connecting device (such as quick screw connection and elliptical hole adjustment) greatly simplify the construction process of the LED display device, shorten the construction cycle, and reduce labor costs. Finally, the lightweight main body 10 design (including the weight-reducing part 13) and modular installation logic make the LED display device easier to transport, handle, and maintain, while adapting to different specifications of display boxes and mounting frames 2, enhancing the applicability and competitiveness of the product in various application scenarios (such as outdoor advertising screens and indoor displays). It can be used for the installation of straight screen cabinets and brackets, and can also be adapted to the installation of curved cabinets and brackets by machining the angle. It adopts a direct molding process, which eliminates the need for mechanical processing, effectively improving production efficiency and product consistency.

[0049] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A connection device for an LED display box assembly, characterized in that, An LED display box assembly connection device is used for connecting LED display box assemblies and mounting frames, wherein the front end of the LED display box assembly is the end for mounting the LED display screen, and the other end opposite the front end of the LED display box assembly is the rear end of the LED display box assembly. The LED display box assembly connection device includes: The main body is disposed at the rear end of the LED display box assembly and forms a clamping space between the main body and the LED display box assembly for clamping the fixing frame. The main body is provided with a first connecting structure and a second connecting structure. The front connecting part has its control end located at the front end of the LED display box assembly. The front connecting part extends from the front end of the LED display box assembly to the rear end of the LED display box assembly. Both ends of the front connecting part are respectively connected to the first connecting structure and the LED display box assembly. The rear connection part has its control end located at the rear end of the LED display box assembly. The rear connection part extends from the rear end of the LED display box assembly to the front end of the LED display box assembly. The two ends of the rear connection part are respectively connected to the second connection structure and the LED display box assembly.

2. The LED display box assembly connection device according to claim 1, characterized in that, There are multiple front connecting parts, which are respectively located on both sides of the clamping space. There are multiple first connecting structures, and the positions of the multiple first connecting structures correspond to the positions of the multiple front connecting parts.

3. The LED display box assembly connection device according to claim 1, characterized in that, There are multiple rear connecting parts, which are respectively located on both sides of the clamping space. There are multiple second connecting structures, and the positions of the multiple second connecting structures correspond to the positions of the multiple rear connecting parts.

4. The LED display box assembly connection device according to claim 2, characterized in that, The LED display box assembly is provided with a plurality of first through holes, the positions of which correspond to the positions of a plurality of first connecting structures. The front connecting part includes a first screw, and the first connecting structure is a first threaded hole. The first screw is screwed into the first threaded hole through the first through hole to connect the LED display box assembly and the main body.

5. The LED display box assembly connection device according to claim 4, characterized in that, The main body has multiple positioning protrusions on the side near the LED display box assembly, and a positioning space is formed between the multiple positioning protrusions. The fixing frame is embedded in the positioning space.

6. The LED display box assembly connection device according to claim 5, characterized in that, The positioning protrusion includes an annular protrusion, and multiple annular protrusions are arranged in a one-to-one correspondence with multiple first threaded holes. The annular protrusions are arranged along the circumference of the first threaded holes.

7. The LED display box assembly connection device according to claim 5, characterized in that, The LED display box assembly is provided with a plurality of second threaded holes, the positions of which correspond to the positions of a plurality of second connecting structures. The rear connecting part includes a second screw, and the second connecting structure is a second through hole. The second screw is screwed into the second threaded hole through the second through hole to connect the LED display box assembly and the main body.

8. The LED display box assembly connection device according to claim 7, characterized in that, The second through hole is an elliptical hole.

9. The LED display box assembly connection device according to claim 1, characterized in that, The main body is provided with multiple weight-reducing parts.

10. An LED display device, characterized in that, The LED display device includes an LED display box assembly, a fixing frame, and an LED display box assembly connecting device, wherein the LED display box assembly connecting device is the LED display box assembly connecting device according to any one of claims 1 to 9.

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