Front maintenance device, LED unit box and LED display

Abstract

The present invention relates to the technical field of LED module structure, and provides a front maintenance device, an LED unit box and an LED display screen, wherein the front maintenance device includes a retaining structure installed on a box body, a pin structure adapted to the retaining structure and movably connected to the LED module in the height direction, and a locking structure installed on the LED module and used to limit the movement of the pin structure relative to the LED module, the retaining structure is provided with a retaining groove for the pin structure to be inserted, the pin structure is provided with a locking groove for the locking structure to be inserted, and the locking structure is plugged into the locking groove when the pin structure is plugged into the retaining groove. When disassembly for front maintenance is required, the locking structure only needs to be pulled out of the locking groove, and the pin structure falls down due to its own gravity and leaves the retaining groove, so that the retaining structure of the box body is separated from the pin structure of the LED module, and the LED module is disassembled from the box body, that is, the disassembly operation of the LED module and the box body can be quickly realized by controlling the locking structure.

Description

Technical Field

[0001] The invention relates to the technical field of LED module structures, and in particular provides a front maintenance device, an LED unit box and an LED display screen. Background Art

[0002] LED outdoor display screens are commonly found on the exterior walls or glass curtain walls of buildings, city landmarks, large advertising screens, etc. LED outdoor display screens are mainly composed of LED unit boxes, which include a box body and LED modules installed on the box body, and display is performed through the LED modules.

[0003] Front maintenance is increasingly becoming a technical label for LED displays. Currently, various patents related to front maintenance of LED displays are mainly focused on how to quickly disassemble LED display modules, such as through magnetic suction structures, various lock structure solutions, etc., to achieve rapid installation or removal of LED display modules on the box frame.

[0004] The lock structure used in the existing front maintenance is complicated and cumbersome, which makes the installation and disassembly operations during the front maintenance inconvenient and cannot achieve quick disassembly. Summary of the invention

[0005] An object of the present invention is to provide a front maintenance device, aiming to solve the problem that the existing LED unit box is inconvenient to disassemble during front maintenance and cannot be quickly disassembled.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] In the first aspect, the present application provides a front maintenance device for loading and unloading an LED module and a box body, the front maintenance device includes a retaining structure installed on the box body, a pin structure adapted to the retaining structure and movably connected to the LED module along the height direction, and a locking structure installed on the LED module and used to limit the movement of the pin structure relative to the LED module, the retaining structure is provided with a retaining groove for inserting the pin structure, the pin structure is provided with a locking groove for inserting the locking structure, and the locking structure is inserted into the locking groove when the pin structure is inserted into the retaining groove.

[0008] Beneficial effects of the present invention: the front maintenance device provided by the present invention utilizes the fixing structure installed on the box body to cooperate with the ejector structure provided on the LED module, the ejector structure is inserted into the fixing groove of the fixing structure, and at the same time the locking structure on the LED module is plugged into the locking groove of the ejector structure, so that the ejector structure maintains a connection state of being inserted in the fixing groove of the fixing structure, thereby allowing the LED module to be loaded on the box body; when it is necessary to disassemble for front maintenance, it is only necessary to pull the locking structure out of the locking groove, and the ejector structure falls away from the fixing groove according to its own gravity, so that the fixing structure of the box body is separated from the ejector structure of the LED module, and the LED module is disassembled from the box body, that is, the disassembly operation of the LED module and the box body can be quickly realized by controlling the locking structure.

[0009] In one embodiment, the locking structure includes a locking plug-in movably connected to the LED module along the insertion direction and an elastic member disposed between the locking plug-in and the LED module.

[0010] By adopting the above-mentioned technical solution, the locking plug-in is used to be inserted into the locking groove, and the locking plug-in can move on the LED module to be inserted into or leave the locking groove, thereby realizing rapid loading and unloading of the LED module and the box; the elastic member can enable the locking plug-in to move out of the locking groove and then return to its original position for rapid installation again.

[0011] In one embodiment, the locking plug-in is a plug-in block, which is provided with a plug-in protrusion for inserting into the locking groove, and the plug-in block is also provided with a connection hole for connecting with an external device.

[0012] By adopting the above-mentioned technical solution, the plug-in protrusion of the plug-in block is inserted into the locking groove, and the connecting hole on the plug-in block is used to connect with the external device. The plug-in block is pulled out by the external device, so that the plug-in protrusion can be disengaged from the locking groove to unlock the position lock of the ejector structure, so that the ejector structure can be disengaged from the retaining groove to realize the rapid disassembly of the LED module and the box.

[0013] In one embodiment, the locking plug-in is a magnet, and the magnet is provided with an inserting protrusion for inserting into the locking groove.

[0014] By adopting the above-mentioned technical solution, the plug-in protrusion of the magnet is inserted into the locking groove. When unlocking is required, it is only necessary to use a tool that cooperates with the magnetic attraction of the magnet to adsorb the magnet, so that the magnet and the plug-in protrusion are disengaged from the locking groove to unlock the position lock of the ejector structure, so that the ejector structure can be disengaged from the retaining groove to achieve rapid disassembly of the LED module and the box.

[0015] In one embodiment, the front maintenance device also includes a limiting structure installed on the LED module, the ejector structure includes a sleeve, and a ejector body telescopically connected to the sleeve and used to insert into the retaining groove, the sleeve is provided with a locking groove and a limiting groove cooperating with the limiting structure, the limiting structure is inserted in the limiting groove and can slide in the limiting groove.

[0016] By adopting the above-mentioned technical solution, the ejector body is inserted into the retaining groove to realize the locking connection with the retaining structure, and the locking groove provided on the sleeve cooperates with the locking structure to realize the locking quick installation and unlocking and disassembly, and at the same time, the limiting groove provided on the sleeve cooperates with the limiting structure, so that when the locking structure is separated from the locking groove, the sleeve and the ejector body will not fall away from the LED module, but will be restricted on the LED module by the limiting structure, so as to avoid the ejector structure from falling and affecting the subsequent installation.

[0017] In one embodiment, the ejector pin body includes a large needle portion facing the retaining groove and a small needle portion integrally formed with the large needle portion and having a smaller diameter than the large needle portion. A compression spring is sleeved on the small needle portion, one end of the compression spring presses against the large needle portion, and the other end of the compression spring presses against the sleeve.

[0018] By adopting the above technical solution, the large needle part of the ejector body is inserted into the retaining groove to achieve locking connection with the retaining structure, and the compression spring sleeved on the small needle part enables the ejector body to be elastically telescopically connected to the sleeve.

[0019] In one embodiment, the ejector pin structure further includes a hand-operated member, and one end of the small needle portion is inserted through the sleeve to the outside and connected to the hand-operated member.

[0020] By adopting the above technical solution, the positions of the sleeve and the ejector body can be adjusted by using the hand lever. When the LED module and the box are quickly installed, the position of the sleeve can be adjusted by the hand lever to reinsert the locking piece into the locking groove. Therefore, during installation, it is only necessary to directly snap the LED module onto the box, and the ejector body can be pushed back into the retaining groove to achieve a locking connection between the retaining structure and the ejector structure.

[0021] In one embodiment, the retaining structure includes a retaining member having a connecting portion connected to the box body at one end and an inverted claw portion provided at the other end of the connecting portion, and a retaining groove is formed between the inverted claw portion and the connecting portion.

[0022] By adopting the above technical solution, the connecting portion of the retaining member is connected to the box body, and a retaining groove is formed between the inverted claw portion and the connecting portion. When installing the LED module on the box body, it is only necessary to directly snap the LED module onto the box body, and the ejector pin body of the ejector pin structure can enter the retaining groove along the inverted claw portion to achieve a locking connection.

[0023] In a second aspect, the present application further provides an LED unit box, including an LED module and a box body. The LED unit box also includes a front maintenance device as described above, and the LED module can be detachably mounted on the box body through the front maintenance device.

[0024] Beneficial effects of the present invention: The LED unit box provided by the present invention, on the basis of having the above-mentioned front maintenance device, can be quickly disassembled to facilitate timely front maintenance operations.

[0025] In a third aspect, the present application also provides an LED display screen, comprising the LED unit box as described above.

[0026] Beneficial effects of the present invention: The LED display screen provided by the present invention, based on the above-mentioned LED unit box, is convenient for quickly implementing front maintenance work of the LED display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0028] Figure 1 A schematic diagram of the structure of an LED unit box provided by an embodiment of the present invention;

[0029] Figure 2 A side view of an LED unit box provided by an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the structure of a front maintenance device provided in an embodiment of the present invention provided on an LED module;

[0031] Figure 4 A schematic diagram of the structure of a front maintenance device provided by an embodiment of the present invention;

[0032] Figure 5 A schematic diagram of the structure of a locking plug-in provided by an embodiment of the present invention;

[0033] Figure 6 A schematic diagram of the structure of another locking plug-in provided by an embodiment of the present invention;

[0034] Figure 7 A schematic structural diagram of an ejector pin structure provided by an embodiment of the present invention;

[0035] Figure 8 A schematic diagram of the structure of the ejector body provided by an embodiment of the present invention;

[0036] Fig. 9 A schematic structural diagram of a retention structure provided in an embodiment of the present invention.

[0037] Among them, the reference numerals in the figure are:

[0038] 100, front maintenance device; 200, LED module; 300, housing; 400, LED unit box; 10, retaining structure; 101, retaining groove; 11, retaining piece; 111, connecting portion; 112, inverted claw portion; 20, ejector structure; 201, locking groove; 202, limiting groove; 21, sleeve; 22, ejector body; 221, large needle portion; 222, small needle portion; 23, compression spring; 24, hand-operated piece; 30, locking structure; 31, locking plug-in; 311, plug-in protrusion; 312, connecting hole; 32, elastic piece; 40, limiting structure. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Please refer to Figures 1 to 4 In the first aspect, the present application provides a front maintenance device 100 for loading and unloading an LED module 200 and a box body 300. The front maintenance device 100 includes a retaining structure 10 installed on the box body 300, a pin structure 20 adapted to the retaining structure 10 and movably connected to the LED module 200 along the height direction, and a locking structure 30 installed on the LED module 200 and used to limit the movement of the pin structure 20 relative to the LED module 200. The retaining structure 10 is provided with a retaining groove 101 for inserting the pin structure 20, and the pin structure 20 is provided with a locking groove 201 for inserting the locking structure 30. When the pin structure 20 is inserted into the retaining groove 101, the locking structure 30 is inserted into the locking groove 201.

[0044] The ejector structure 20 is movably connected in the height direction of the LED module 200, that is, the ejector structure 20 can freely move up and down along the height direction of the LED module 200. When there is no external force restriction, the ejector structure 20 will fall according to its own gravity. The locking structure 30 is used to lock the position of the ejector structure 20. By inserting the locking structure 30 into the locking groove 201, for example, the locking groove 201 is arranged perpendicular to the moving direction of the ejector structure 20, and the locking structure 30 is inserted into the locking groove 201 to hinder the movement of the ejector structure 20, so that the ejector structure 20 remains in the current position. Therefore, when the ejector structure 20 is inserted into the fixing groove of the retaining structure 10 at a higher position along the height direction, the locking structure 30 is inserted into the locking groove 201 of the ejector structure 20, so that the ejector structure 20 remains in the position inserted into the retaining groove 101, that is, the ejector structure 20 is locked and connected with the retaining structure 10, and the LED module 200 is connected with the box 300. When the locking structure 30 is separated from the locking groove 201 of the ejector structure 20, the ejector structure 20 falls due to its own gravity and separates from the retaining groove 101, so that the ejector structure 20 is separated from the retaining structure 10, that is, the LED module 200 is separated from the box body 300, so as to achieve a quick disassembly effect.

[0045] When front maintenance is required, the LED module 200 needs to be removed from the box 300 to achieve front maintenance from the front end of the box 300. At this time, the LED module 200 and the box 300 are in a connected state, wherein the ejector structure 20 is inserted into the retaining groove 101 of the retaining structure 10 to achieve a locking connection between the ejector structure 20 and the retaining groove 101, and the locking structure 30 is inserted into the locking groove 201 of the ejector structure 20 to achieve position locking of the ejector structure 20. In order to quickly remove the LED module 200 from the box 300, it is only necessary to pull the locking structure 30 out of the locking groove 201. After the ejector structure 20 loses the locking effect of the locking structure 30, it will fall according to its own gravity and detach from the retaining groove 101, that is, the ejector structure 20 on the LED module 200 is disconnected from the retaining structure 10 on the box 300, thereby achieving the purpose of quickly removing the LED module 200 from the box 300. After completing the front maintenance operation, it is only necessary to move the ejector structure 20 in the height direction until the locking structure 30 can be inserted into the locking groove 201 again, so that the locking structure 30 locks the position of the ejector structure 20 again, and then directly snap the LED module 200 onto the box body 300, so that the ejector structure 20 is directly inserted into the retaining groove 101 of the retaining structure 10, so as to quickly achieve installation.

[0046] The front maintenance device 100 provided by the present invention utilizes the retaining structure 10 installed on the box body 300 to cooperate with the ejector structure 20 provided on the LED module 200, and the ejector structure 20 is inserted into the retaining groove 101 of the retaining structure 10, and at the same time, the locking structure 30 on the LED module 200 is plugged into the locking groove 201 of the ejector structure 20, so that the ejector structure 20 remains in the connection state of being inserted into the retaining groove 101 of the retaining structure 10, so that the LED module 200 is 00 is loaded on the box body 300; when it needs to be disassembled for front maintenance, it only needs to pull out the locking structure 30 from the locking groove 201, and the ejector structure 20 falls down according to its own gravity and leaves the retaining groove 101, so that the retaining structure 10 of the box body 300 and the ejector structure 20 of the LED module 200 are separated, and the LED module 200 is removed from the box body 300, that is, the disassembly operation of the LED module 200 and the box body 300 can be quickly realized by controlling the locking structure 30.

[0047] Please refer to Figures 1 to 6In one embodiment, the locking structure 30 includes a locking plug-in 31 movably connected to the LED module 200 along the direction of inserting into the locking groove 201 and an elastic member 32 disposed between the locking plug-in 31 and the LED module 200. In order to facilitate the movement of the locking plug-in 31, a receiving cavity can be provided on the LED module 200 to provide the locking plug-in 31, and the elastic member 32 is disposed between the receiving cavity and the locking plug-in 31. The locking plug-in 31 is slidably matched with the receiving cavity, so that the locking plug-in 31 can move in the receiving cavity. Among them, the elastic member 32 can be a reset spring, one end of the reset spring is connected to the bottom of the receiving cavity, and the other end of the reset spring is connected to the locking plug-in 31. When the locking plug-in 31 is moved by an external tool to disengage the locking plug-in 31 from the locking groove 201, the locking plug-in 31 compresses the reset spring. When the force applied by the external tool is removed, the compression spring recovers its elastic deformation and pushes the locking plug-in 31 back to its original position, so that the locking plug can be used again to install the LED module 200 and the box 300.

[0048] Please refer to Figure 2 , Figure 4 and Figure 5 In one embodiment, the locking plug-in 31 is a plug-in block, and a plug-in protrusion 311 for inserting into the locking groove 201 is provided on the plug-in block, and a connection hole 312 for connecting with an external device is also provided on the plug-in block. The plug-in protrusion 311 of the plug-in block is used to insert into the locking groove 201 or to disengage from the locking groove 201 to achieve the effect of locking the ejector structure 20 or unlocking the ejector structure 20. At the same time, the connection block on the plug-in block is connected to the external device, and the plug-in block is connected to the external device to control the movement of the plug-in block, so that the plug-in block is disengaged from the locking groove 201 and the LED module 200 is quickly disassembled. Specifically, tapping can be performed in the connection hole 312, and the external device is used to engage with the connection hole 312 to achieve connection. In this way, the movement of the plug-in block can be controlled by operating the external device, so that the plug-in protrusion 311 of the plug-in block can be easily removed from the locking groove 201. After the disassembly operation is completed, the external device is removed, and the plug-in block returns to its original position through the elastic member 32 to restore elastic deformation, and the ejector structure 20 is moved up and returned to its original position, so that the plug-in protrusion 311 of the plug-in block is reinserted into the locking groove 201, and the plug-in block locks the position of the ejector structure 20. When installing, the LED module 200 only needs to be directly buckled on the box body 300, and the ejector structure 20 is squeezed into the retaining groove 101 and connected to the retaining structure 10 again, so as to achieve quick installation. It can be understood that the plug-in block can be used as a rust-proof embedded aluminum block.

[0049] Please refer to Figure 2 , Figure 4 and Figure 6In one embodiment, the locking plug-in 31 is a magnet, and a plug-in protrusion 311 for inserting into the locking groove 201 is provided on the magnet. The plug-in protrusion 311 of the plug-in block is used to insert into the locking groove 201 or to disengage from the locking groove 201 to achieve the effect of locking or unlocking the ejector structure 20. At the same time, an external tool is used to cooperate with the magnet magnetic attraction. When the LED module 200 needs to be quickly disassembled, it is only necessary to adsorb the magnet from the direction away from the locking groove 201 by the external tool, so that the magnet moves toward the external tool and squeezes the elastic member 32. At the same time, the plug-in protrusion 311 of the magnet is disengaged from the locking groove 201, so that the ejector structure 20 is unlocked and falls according to its own gravity and disengages from the retaining groove 101, thereby realizing the rapid separation of the ejector structure 20 and the retaining structure 10, that is, realizing the rapid separation of the LED module 200 and the box body 300. After the disassembly operation is completed, the external tool is removed. At this time, the magnet returns to its original position through the elastic deformation restored by the elastic member 32, and the ejector structure 20 is moved back to its original position, so that the plug-in protrusion 311 of the magnet is reinserted into the locking groove 201, so that the magnet locks the position of the ejector structure 20. During installation, it is only necessary to directly snap the LED module 200 onto the box body 300, and the ejector structure 20 is squeezed into the retaining groove 101 and connected to the retaining structure 10 again, thereby achieving quick installation.

[0050] Please refer to Figure 2 , Figure 4 and Figure 7In one embodiment, the front maintenance device 100 further includes a limiting structure 40 installed on the LED module 200. The ejector structure 20 includes a sleeve 21 and an ejector body 22 telescopically connected to the sleeve 21 and used to be inserted into the retaining groove 101. The sleeve 21 is provided with a locking groove 201 and a limiting groove 202 that cooperates with the limiting structure 40. The limiting structure 40 is inserted into the limiting groove 202 and can slide in the limiting groove 202. It can be understood that in order to ensure that the ejector structure 20 only moves in the height direction on the LED module 200, a channel along the height direction can be provided on the LED module 200, and the ejector structure 20 is provided in the channel, so that the ejector structure 20 can only move in the height direction along the channel. The ejector body 22 is telescopically connected to the sleeve 21 , so that when the LED module 200 is installed on the box 300 , the ejector body 22 is squeezed into the retaining groove 101 and can be squeezed into the sleeve 21 first, and then pop out and extend into the retaining groove 101 to achieve a locking connection after reaching the retaining groove 101 . A locking groove 201 is provided on the sleeve 21 to realize the insertion and locking of the locking structure 30. A limiting groove 202 is also provided on the sleeve 21. The limiting structure 40 is inserted into the limiting groove 202. When the locking structure 30 disengages from the locking groove 201 and releases the lock on the ejector structure 20, the ejector structure 20 falls according to its own gravity, and the limiting structure 40 moves upward in the height direction corresponding to the limiting groove 202 until the limiting structure 40 abuts against the side wall at the top of the limiting groove 202, that is, the limiting structure 40 supports the sleeve 21 of the ejector structure 20 to prevent the ejector structure 20 from disengaging from the LED module 200 when falling and affecting the subsequent installation. It can be understood that the locking groove 201 can be a slot hole provided on the sleeve 21, or an annular groove provided on the sleeve 21 around the central axis; similarly, the limiting groove 202 can be a movable groove provided on the sleeve 21, and the limiting structure 40 can move up and down in the height direction in the movable groove, or it can be an annular groove provided on the sleeve 21 around the central axis. The limiting structure 40 is installed on the LED module 200, and the limiting structure 40 has a convex portion for extending into the limiting groove 202 to limit the moving range of the ejector structure 20.

[0051] Please refer to Figure 2 , Figure 4 , Figure 7 and Figure 8In one embodiment, the ejector body 22 includes a large needle portion 221 facing the retaining groove 101 and a small needle portion 222 integrally formed with the large needle portion 221 and having a smaller diameter than the large needle portion 221. A compression spring 23 is sleeved on the small needle portion 222, one end of the compression spring 23 abuts against the large needle portion 221, and the other end of the compression spring 23 abuts against the sleeve 21. The large needle portion 221 of the ejector body 22 is extended into the retaining groove 101 for connection, and the compression spring 23 is sleeved on the small needle portion 222, so that one end of the compression spring 23 abuts against the large needle portion 221, and the other end abuts against the sleeve 21, so as to realize the elastic telescopic connection of the ejector body 22 in the sleeve 21. When installing the LED module 200 on the box body 300, firstly extend the locking structure 30 into the locking groove 201 of the ejector structure 20 to lock the ejector structure 20, and then directly snap-fit ​​and connect the LED module 200 to the box body 300. During the snap-fitting process, the large needle portion 221 of the ejector body 22 will be squeezed into the retaining groove 101 from the end of the retaining structure 10 away from the box body 300. During the process of squeezing into the retaining groove 101, the retaining structure 10 squeezes the large needle portion 221 into the sleeve 21 and compresses the compression spring 23. When the large needle portion 221 reaches the position of the retaining groove 101, the compression spring 23 restores its elastic deformation and lifts the large needle portion 221 into the retaining groove 101, thereby realizing the locking connection between the ejector structure 20 and the retaining structure 10. At the same time, a through hole nut can be sleeved on the large needle part 221 of the ejector body 22 , the through hole nut is fixedly connected to the large needle part 221 and a layer of spring is arranged between the through hole nut and the sleeve 21 to limit the contraction amount of the large needle part 221 .

[0052] Please refer to Figure 2 , Figure 4 , Figure 7 and Figure 8 In one embodiment, the ejector structure 20 further includes a hand-operated member 24, one end of the small needle portion 222 is inserted through the sleeve 21 to the outside and connected to the hand-operated member 24. The hand-operated member 24 can be used to adjust the position of the sleeve 21 and the ejector body 22. When the LED module 200 and the box 300 are quickly installed, the position of the sleeve 21 can be adjusted by the hand-operated member 24 to reinsert the locking member into the locking groove 201. Therefore, during installation, the LED module 200 only needs to be directly fastened to the box 300, and the ejector body 22 can be pushed back into the retaining groove 101 to achieve a locking connection between the retaining structure 10 and the ejector structure 20.

[0053] Please refer to Figure 2 , Figure 4 and Fig. 9In one embodiment, the retaining structure 10 includes a retaining member 11, and the retaining member 11 has a connecting portion 111 connected to the box body 300 at one end and an undercut claw portion 112 provided at the other end of the connecting portion 111, and a retaining groove 101 is formed between the undercut claw portion 112 and the connecting portion 111. The connecting portion 111 of the retaining member 11 is connected to the box body 300, and the retaining groove 101 is formed between the undercut claw portion 112 and the connecting portion 111. When installing the LED module on the box body 300, it is only necessary to directly snap the LED module 200 onto the box body 300. Since the side edge of the undercut claw portion 112 is an oblique edge inclined toward the outer end of the retaining groove 101, for example. The undercut claw portion 112 is in a truncated cone structure with the bottom of the truncated cone structure facing the retaining groove 101. When the ejector structure 20 moves from the outside toward the retaining groove 101, the ejector body 22 can enter the retaining groove 101 along the oblique edge of the undercut claw portion 112 to achieve a locking connection, and the undercut claw portion 112 forms a non-return surface on the side facing the retaining groove 101 to prevent the ejector body 22 from escaping from the retaining groove 101.

[0054] Please refer to Figures 1 to 4 In the second aspect, the present application further provides an LED unit box 400, including an LED module 200 and a box body 300. The LED unit box 400 also includes the front maintenance device 100 as described above, and the LED module 200 is detachably mounted on the box body 300 through the front maintenance device 100. The LED unit box 400 provided by the present invention, on the basis of having the front maintenance device 100 described above, can realize rapid disassembly of the LED unit box 400, so as to facilitate timely front maintenance operations.

[0055] In a third aspect, the present application further provides an LED display screen, comprising the above-mentioned LED unit box 400. The LED display screen provided by the present invention, based on the above-mentioned LED unit box 400, is convenient for quickly implementing front maintenance work.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A front maintenance device for loading and unloading LED modules and boxes, characterized in that: The front maintenance device includes a retaining structure installed on the box body, a pin structure adapted to the retaining structure and movably connected to the LED module along the height direction, and a locking structure installed on the LED module and used to limit the movement of the pin structure relative to the LED module. The retaining structure is provided with a retaining groove for the pin structure to be inserted, and the pin structure is provided with a locking groove for the locking structure to be inserted. When the pin structure is inserted into the retaining groove, the locking structure is inserted into the locking groove; the locking structure includes a locking plug-in movably connected to the LED module along the insertion direction and a locking plug-in provided at the The front maintenance device also includes a limiting structure installed on the LED module, the ejector structure includes a sleeve, and an ejector body telescopically connected to the sleeve and used to be inserted into the retaining groove, the sleeve is provided with the locking groove and a limiting groove cooperating with the limiting structure, the limiting structure is inserted into the limiting groove and can slide in the limiting groove; the retaining structure includes a retaining piece, the retaining piece has a connecting portion connected to the box body at one end and an inverted claw portion provided at the other end of the connecting portion, and the retaining groove is formed between the inverted claw portion and the connecting portion.

2. The front maintenance device according to claim 1, characterized in that: The locking plug-in is a plug-in block, on which a plug-in protrusion for inserting into the locking groove is provided, and on which a connection hole for connecting with an external device is also provided.

3. The front maintenance device according to claim 1, characterized in that: The locking plug-in is a magnet, and an inserting protrusion for inserting into the locking groove is provided on the magnet.

4. The front maintenance device according to claim 1, characterized in that: The ejector pin body includes a large needle portion facing the retaining groove and a small needle portion integrally formed with the large needle portion and having a smaller diameter than the large needle portion. A compression spring is sleeved on the small needle portion, one end of the compression spring presses against the large needle portion, and the other end of the compression spring presses against the sleeve.

5. The front maintenance device according to claim 4, characterized in that: The ejector pin structure further comprises a hand-operated member, and one end of the small needle portion is passed through the sleeve to the outside and is connected to the hand-operated member.

6. An LED unit box, comprising an LED module and a box body, characterized in that: The LED unit box further comprises a front maintenance device as described in any one of claims 1 to 5, and the LED module is detachably mounted on the box body through the front maintenance device.

7. An LED display screen, characterized in that: Comprising the LED unit box as described in claim 6.

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