LED display device

Abstract

The utility model provides a kind of LED display device, comprising: frame, first connecting hole is provided on frame;LED display module is detachably set in the front side of frame, and the second connecting hole corresponding with the avoiding hole and being communicated is provided on the LED display module and the avoiding hole;Fastener, when fastener is connected in first connecting hole and second connecting hole, to install LED display module in frame;When fastener leaves first connecting hole or second connecting hole, to remove LED display module from frame;Wherein, fastener is located on one end of LED display module and is provided with front operating part, fastener is located on one end of frame and is provided with rear operating part, and front operating part corresponds to avoiding hole.The technical scheme of the application effectively solves the problem of troublesome dismounting operation of LED display module in related technology.

Description

Technical Field

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

[0002] The LED display device consists of a frame and LED display modules mounted on the frame. The LED display modules are mounted on the frame on the front and back sides respectively using two different fasteners.

[0003] LED display devices are mostly installed indoors or outdoors. Due to space limitations at the back of the LED display device, maintenance can only be performed by removing and installing the LED display modules from the front. This process is called front maintenance. If the space at the back of the LED display device allows for removal and installation of the LED display modules from the back, this process is called rear maintenance.

[0004] Maintenance personnel had to operate two different fasteners during pre- and post-maintenance processes to disassemble and assemble the LED display module, making the operation cumbersome. Utility Model Content

[0005] The main objective of this invention is to provide an LED display device to solve the problem of cumbersome disassembly and assembly of LED display modules in related technologies.

[0006] To achieve the above objectives, this utility model provides an LED display device, comprising: a frame, wherein a first connecting hole is provided on the frame; an LED display module, detachably disposed on the front side of the frame, wherein the LED display module is provided with a clearance hole and a second connecting hole corresponding to and communicating with the clearance hole; and a fastener, wherein when the fastener is connected to the first connecting hole and the second connecting hole, the LED display module is mounted on the frame; and when the fastener leaves the first connecting hole or the second connecting hole, the LED display module is detached from the frame; wherein, a front operating part is provided on one end of the fastener located on the LED display module, and a rear operating part is provided on one end of the fastener located on the frame, the front operating part corresponding to the clearance hole.

[0007] Furthermore, a first internal thread is provided in the first connecting hole, and a second internal thread is provided in the second connecting hole. The fastener includes an external thread segment that connects to the first internal thread or the second internal thread. When the external thread segment connects to the second internal thread and the fastener is still connected to the first connecting hole, the LED display module is mounted on the frame. When the external thread segment connects to the first internal thread and the fastener leaves the second connecting hole, the LED display module can be removed from the frame.

[0008] Furthermore, the front operating part is disposed within the external thread section, and the fastener also includes a clearance section connected between the external thread section and the rear operating part; when the external thread section is connected to the second internal thread, the clearance section is located within the first connecting hole and clearances the first internal thread; when the external thread section is connected to the first internal thread, the clearance section exits the first connecting hole.

[0009] Furthermore, the LED display device also includes an operating tool capable of operating with the front operating part and / or the rear operating part, wherein the operating tool passes through the clearance hole to operate with the front operating part, and the axis of the operating tool is parallel to or at a first preset angle with the axis of the second connecting hole; the LED display device also includes a locking member connected in the second connecting hole, wherein when the operating tool leaves the front operating part and the axis of the operating tool is at a second preset angle with the axis of the second connecting hole, the operating tool and the locking member lock together to support the LED display module, wherein the second preset angle is greater than the first preset angle.

[0010] Furthermore, the locking component includes a locking cylinder, the inner hole of which has a locking surface, and the operating tool can engage with the locking surface in a locking manner.

[0011] Furthermore, the second connecting hole includes a first hole segment corresponding to and communicating with the clearance hole and a second hole segment communicating with the first hole segment. The diameter of the second hole segment is greater than the diameter of the first hole segment, and the length of the second hole segment is greater than the length of the locking member. The locking member is fixed in the second hole segment, and the fastener can be movably connected to the first connecting hole and the second hole segment.

[0012] Furthermore, a stop is provided on the side of the operating tool. When the stop engages with the front stop of the LED display module, the fastener is connected to the first connecting hole, and the operating tool moves away from the front operating part.

[0013] Furthermore, the LED display module includes an LED light panel and a rear cover disposed on the rear side of the LED light panel, with clearance holes disposed on the LED light panel and a second connection hole disposed on the rear cover.

[0014] Furthermore, the rear cover includes a rear cover body and a connecting cylinder fixed inside the rear cover body, and the second connecting hole is provided on the inner hole of the connecting cylinder.

[0015] Furthermore, a rectangular window is provided on the frame, extending through it in the front-back direction. The diagonal of the rectangular window is larger than the maximum width of the LED display module, so that the LED display module can pass through the rectangular window.

[0016] According to the technical solution of this utility model, the LED display device includes: a frame, an LED display module, and fasteners. The frame has a first connecting hole. The LED display module is detachably mounted on the front side of the frame, and the LED display module has a clearance hole and a second connecting hole corresponding to and communicating with the clearance hole. The fasteners are used to install the LED display module onto the frame when connected to the first and second connecting holes; and to remove the LED display module from the frame when the fasteners are removed from either the first or second connecting hole. A front operating part is provided on one end of the fastener located on the LED display module, and a rear operating part is provided on one end of the fastener located on the frame. The front operating part corresponds to the clearance hole. When performing front maintenance on the LED display module, maintenance personnel can use operating tools to operate the front operating part to manipulate the fasteners and disassemble / assemble the LED display module; when performing rear maintenance on the LED display module, maintenance personnel can use operating tools to operate the rear operating part to manipulate the fasteners and disassemble / assemble the LED display module. In this way, maintenance personnel only need to operate on one fastener, eliminating the need to operate on two different fasteners separately, thus simplifying the maintenance process. Therefore, the technical solution of this application effectively solves the problem of cumbersome disassembly and assembly of LED display modules in related technologies. Furthermore, by using only this fastener to install the LED display module on the front side of the frame, without the need for two different fasteners, costs can be reduced. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 A rear perspective view of the LED display module mounted on a frame according to an embodiment of the LED display device of the present invention is shown;

[0019] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the LED display module separating from the front side of the frame during subsequent maintenance of the LED display device;

[0020] Figure 3 It shows Figure 1 A three-dimensional structural diagram of the LED display module passing through a rectangular window during post-maintenance of the LED display device;

[0021] Figure 4 It shows Figure 1 A partially exploded view of the LED display module of an LED display device;

[0022] Figure 5 It shows Figure 4 An enlarged schematic diagram of point A of the LED display module;

[0023] Figure 6 It shows Figure 1 A three-dimensional structural diagram of the fasteners for the LED display device;

[0024] Figure 7 It shows Figure 6 Side view of the fastener;

[0025] Figure 8 A front perspective view of an LED display module mounted on a frame according to an embodiment of the LED display device of the present invention is shown, and the operating tools are also shown in the figure;

[0026] Figure 9 It shows Figure 8 A cross-sectional view of the operating tool inserted into the front operating section during front maintenance of the LED display device, wherein the external thread section is connected to the second internal thread;

[0027] Figure 10 It shows Figure 9 An enlarged diagram of point B when the operating tool is inserted into the front operating section during front maintenance of the LED display device;

[0028] Figure 11 It shows Figure 8 A cross-sectional view of the operating tool inserted into the front operating section during front maintenance of the LED display device, wherein the external thread section is connected to the first internal thread;

[0029] Figure 12 It shows Figure 11 An enlarged diagram of point C when the operating tool is inserted into the front operating section during front maintenance of the LED display device;

[0030] Figure 13 It shows Figure 8 A cross-sectional view of the LED display device when the operating tool is separated from the front operating part during front maintenance, wherein the external thread section is connected to the first internal thread;

[0031] Figure 14 It shows Figure 13 This is an enlarged diagram of point D when the operating tools are separated from the front operating part during front maintenance of the LED display device.

[0032] The above figures include the following reference numerals:

[0033] 10. Frame; 11. First connecting hole; 12. First internal thread; 13. Rectangular window;

[0034] 20. LED display module; 21. Second connecting hole; 211. First hole section; 212. Second hole section; 22. Second internal thread; 23. Clearance hole; 24. LED light panel; 25. Back cover; 251. Back cover body; 252. Connecting cylinder; 26. Handle;

[0035] 30. Fastener; 31. Front operating part; 32. Rear operating part; 33. External thread section; 34. Clearance section;

[0036] 40. Operating tools; 41. Stops;

[0037] 50. Card-related parts. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0039] like Figures 1 to 10 As shown, this application provides an LED display device. An embodiment of the LED display device includes a frame 10, an LED display module 20, and a fastener 30. The frame 10 has a first connecting hole 11. The LED display module 20 is detachably disposed on the front side of the frame 10. The LED display module 20 has a clearance hole 23 and a second connecting hole 21 corresponding to and communicating with the clearance hole 23. The fastener 30, when connected to the first connecting hole 11 or the second connecting hole 21, mounts the LED display module 20 onto the frame 10; when the fastener 30 leaves the first connecting hole 11 or the second connecting hole 21, it removes the LED display module 20 from the frame 10. The fastener 30 has a front operating part 31 at one end of the LED display module 20 and a rear operating part 32 at one end of the frame 10. The front operating part 31 corresponds to the clearance hole 23.

[0040] According to the technical solution of the embodiment of the LED display device, when maintenance personnel perform front maintenance on the LED display module 20, they can use an operating tool to operate the front operating part 31 to operate the fastener 30 to disassemble and assemble the LED display module 20. When maintenance personnel perform rear maintenance on the LED display module 20, they can use an operating tool to operate the rear operating part 32 to operate the fastener 30 to disassemble and assemble the LED display module 20. In this way, maintenance personnel only need to operate one fastener 30, instead of operating two different fasteners separately, which simplifies the operation for maintenance personnel. Therefore, the technical solution of the embodiment of the LED display device effectively solves the problem of cumbersome disassembly and assembly operations of LED display modules in related technologies. Furthermore, by using only this fastener 30 to install the LED display module 20 on the front side of the frame 10, without using two different fasteners, costs can be reduced.

[0041] Specifically, the front operating part 31 is preferably an internal hexagonal hole, a slotted slot, a cross slot, or a Phillips head slot, and the rear operating part 32 is preferably an internal hexagonal hole, a slotted slot, a cross slot, or a Phillips head slot.

[0042] Specifically, the operating tool 40 includes an operating head located at the first end of the operating handle and a grip handle located at the second end of the operating handle. The grip handle facilitates handheld operation by maintenance personnel. The operating head can be inserted into the front operating part 31 and the rear operating part 32 to move the fastener 30. If the front operating part 31 is preferably an internal hexagonal hole, the operating head is preferably a hexagonal insert.

[0043] In this embodiment, the LED display module 20 is further mounted on the front side of the frame 10 via a magnetic structure.

[0044] In this embodiment, there are multiple LED display modules 20, and the array of multiple LED display modules 20 is installed on the front side of the frame. Each LED display module 20 is installed on the frame by multiple fasteners. The above-mentioned multiple means that the number is at least two.

[0045] like Figures 6 to 14As shown, a first internal thread 12 is provided in the first connecting hole 11, and a second internal thread 22 is provided in the second connecting hole 21. The fastener 30 includes an external thread section 33 that connects to either the first internal thread 12 or the second internal thread 22. When the external thread section 33 connects to the second internal thread 22, and the fastener 30 is also connected to the first connecting hole 11, the LED display module 20 is mounted on the frame 10. When the external thread section 33 connects to the first internal thread 12, and the fastener 30 is removed from the second connecting hole 21, the LED display module 20 can be removed from the frame 10. By designing the external thread section 33 of the fastener 30 to connect to either the first internal thread 12 or the second internal thread 22, reliable installation and removal of the LED display module 20 on the frame 10 are achieved. This design ensures that both front and rear maintenance can be easily controlled by changing the thread connection state of the same fastener 30, facilitating maintenance.

[0046] like Figures 6 to 14 As shown, the front operating part 31 is disposed within the external thread section 33, and the fastener 30 also includes a clearance section 34 connecting the external thread section 33 and the rear operating part 32. When the external thread section 33 is connected to the second internal thread 22, the clearance section 34 is located within the first connecting hole 11 and avoids the first internal thread 12. When the external thread section 33 is connected to the first internal thread 12, the clearance section 34 exits the first connecting hole 11. The front operating part 31 is located within the external thread section 33, and the presence of the clearance section 34 allows the fastener 30 to adapt to the structures of the first connecting hole 11 and the second connecting hole 21 in different states. When the external thread section 33 is connected to the second internal thread 22, the clearance section 34 avoids the first internal thread 12, ensuring a stable connection of the fastener 30 and avoiding interference. Conversely, when connected to the first internal thread 12, the clearance section 34 exits the first connecting hole 11, allowing the fastener 30 to be partially removed, with the fastener 30 only connected to the first internal thread 12, facilitating subsequent operation of the fastener 30 and thus improving maintenance efficiency.

[0047] like Figures 6 to 14As shown, the LED display device also includes an operating tool 40 capable of operating with the front operating part 31 and / or the rear operating part 32. The operating tool 40 passes through the clearance hole 23 to operate with the front operating part 31. The axis of the operating tool 40 is parallel to or forms a first preset angle with the axis of the second connecting hole 21. The LED display device also includes a locking member 50 connected in the second connecting hole 21. When the operating tool 40 leaves the front operating part 31 and the axis of the operating tool 40 forms a second preset angle with the axis of the second connecting hole 21, the operating tool 40 engages with the locking member 50 to support the LED display module 20. The second preset angle is greater than the first preset angle. The operating tool 40 can not only directly operate with the front operating part 31 to facilitate the operation of the fastener 30 for front maintenance, but also engage with the locking member 50 by adjusting the axis with the second connecting hole 21 to form a second preset angle. This provides support for front maintenance, allowing the operating tool 40 to effectively support the LED display module 20, facilitating its removal and installation from the frame 10 for front maintenance. The fastener 30 is preferably a screw.

[0048] It should be noted that the parallelism between the axis of the operating tool 40 and the axis of the second connecting hole 21 means that the axis of the operating tool 40 coincides with the axis of the second connecting hole 21 or is separated by a predetermined distance, so as to ensure that the axis of the operating tool 40 and the axis of the second connecting hole 21 are parallel.

[0049] like Figure 4 , Figure 5 and Figure 14 As shown, the locking component 50 includes a locking cylinder with a locking surface inside the cylinder. The operating tool 40 can engage with this locking surface. When the operating tool 40 engages with the locking surface, the friction between the operating tool 40 and the locking component 50 increases. The operating tool 40 can be stably positioned within the inner hole of the locking cylinder without easily dislodging itself, thus stably supporting the LED display module 20. During the removal of the LED display module 20 from the frame under its own weight, the operating tool 40 can pull the LED display module 20, facilitating its separation from the front of the frame and improving the safety and reliability of the disassembly process. In this way, the operating tool 40 can directly drive the LED display module 20, allowing for one-step pre-maintenance. The locking cylinder is preferably a stainless steel stud.

[0050] like Figures 6 to 14As shown, the second connecting hole 21 includes a first hole segment 211 corresponding to and communicating with the clearance hole 23, and a second hole segment 212 communicating with the first hole segment 211. The diameter of the second hole segment 212 is larger than the diameter of the first hole segment 211, and the length of the second hole segment 212 is greater than the length of the locking member 50. The locking member 50 is fixed in the second hole segment 212, and the fastener 30 can be movably connected to the first connecting hole 11 and the second hole segment 212. Thus, the second hole segment 212 has a larger diameter and a length exceeding that of the locking member 50. This design allows the fastener 30 to move freely within the second hole segment 212 while ensuring the stability of the locking member 50. This layout provides sufficient space for the fastener 30, making it less obstructed during assembly and disassembly, while ensuring that the locking member 50 can function effectively, supporting the tilting motion of the operating tool 40, thereby making pre-maintenance more convenient and reliable.

[0051] like Figures 6 to 14 As shown, a stop 41 is provided on the side of the operating tool 40. When the stop 41 engages with the front stop of the LED display module 20, the fastener 30 is connected to the first connecting hole 11, and the operating tool 40 is removed from the front operating part 31. The engagement of the stop 41 with the front stop of the LED display module 20 provides precise position feedback during maintenance. Specifically, when the stop 41 contacts the front of the LED display module 20, the fastener 30 is precisely connected to the first connecting hole 11, while the operating tool 40 is disengaged from the front operating part 31. This design not only simplifies the operation steps but also avoids the need for maintenance personnel to frequently check the position of the fastener 30 during maintenance, improving the convenience and accuracy of operation. The stop is preferably a stop protrusion ring.

[0052] like Figures 6 to 14 As shown, the LED display module 20 includes an LED light panel 24 and a rear cover 25 disposed on the rear side of the LED light panel 24. A clearance hole 23 is disposed on the LED light panel 24, and a second connection hole 21 is disposed on the rear cover 25. By separating the clearance hole 23 on the LED light panel 24 and the second connection hole 21 on the rear cover 25, maintenance personnel can selectively disassemble and assemble the rear cover 25 without affecting the performance and integrity of the LED light panel 24.

[0053] In this embodiment, as Figure 4 As shown, a handle 26 is provided on the rear side of the back cover 25. The handle 26 is designed to facilitate maintenance personnel to hold the LED display module 20 during disassembly and assembly, making operation convenient.

[0054] like Figure 4 , Figure 5 and Figure 10As shown, the rear cover 25 includes a rear cover body 251 and a connecting cylinder 252 fixed inside the rear cover body 251. A second connecting hole 21 is provided on the inner hole of the connecting cylinder 252. By fixing the connecting cylinder 252 inside the rear cover body 251 and providing the second connecting hole 21 on the connecting cylinder 252, the overall structural strength of the rear cover 25 can be enhanced. As an independent component, the connecting cylinder 252 can have its precise second connecting hole 21 pre-machined, thereby improving manufacturing accuracy and assembly accuracy during pre- and post-maintenance. The connecting cylinder 252 is preferably an internally threaded copper pillar.

[0055] Specifically, a connecting tube 252 is embedded in the back cover body 251 during injection molding. A locking tube is installed inside the connecting tube 252. After the locking tube is locked into the connecting tube 252, screw glue needs to be applied to fix the locking tube inside the connecting tube 252.

[0056] Specifically, a nut is press-fitted inside the frame, and the first internal thread is the internal thread hole of the nut.

[0057] like Figures 1 to 3 As shown, a rectangular window 13 is provided on the frame 10, extending through it in the front-to-back direction. The diagonal dimension of the rectangular window 13 is larger than the maximum width of the LED display module 20, so that the LED display module 20 can pass through the rectangular window 13. In the scenario of post-maintenance, maintenance personnel can disassemble and assemble the LED display module from the rear side of the frame 10, and then move the LED display module from the front side to the rear side of the frame 10 through the rectangular window 13, thereby facilitating post-maintenance and simplifying the maintenance process.

[0058] Specifically, the maintenance process after implementing the embodiment of the LED display device is as follows:

[0059] After the LED display module is fixed to the frame with screws, when maintaining the LED display module, simply remove the fixing screws from the back of the frame. When removing the screws, they can be partially removed, using the screws connected to the first internal thread to prevent them from falling out. Once the screws have come off the second internal thread, the LED display module can be removed from the back of the rectangular window 13 on the frame by holding the handle 26 and turning it at a certain angle. The installation of the LED display module is similar; after the LED display module is pre-installed in the corresponding position, the screws are tightened.

[0060] The maintenance process before implementing the embodiment of the LED display device is as follows:

[0061] During post-maintenance of the LED display module, align the operating tool with the hexagonal insert with the clearance hole and insert it. When inserting, the hexagonal insert at the front of the tool should be the front operating part of the internal hexagonal hole. After inserting the tool into the screw, rotate the tool clockwise. This will cause the tool to rotate the screw. When the stop engages with the positioning plane on the front of the LED display module, the screw disengages from the second internal thread. Simultaneously, the external thread of the screw engages with the first internal thread, ensuring the screw is fixed to the frame and does not fall out. This prepares for accurate alignment and screw tightening when installing the LED display module later. After the screw disengages from the second internal thread, repeat the same operation. Once all the screws on the LED display module have disengaged from all the second internal threads inside the LED display module, the LED display module will also detach from the frame. Then, move the operating tool back a certain distance, disengaging the hexagonal insert from the front operating part. Using the tool for support, the module can then be removed from the front. When the LED display module is tight during assembly with the frame, simply tilt the operating tool slightly. This engages the tool with the locking mechanism. The larger the second preset angle, the greater the friction between the tool and the locking mechanism. This generates a pulling force when removing the LED display module, allowing for smooth removal. Conversely, after proper maintenance, when installing the LED display module, insert the operating tool and rotate it counterclockwise to secure it firmly.

[0062] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., may be used here to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figure. It should be understood that spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device as described in the figure.

[0063] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An LED display device, characterized in that, include: A frame (10) having a first connecting hole (11) thereon; The LED display module (20) is detachably mounted on the front side of the frame (10). The LED display module (20) is provided with a clearance hole (23) and a second connecting hole (21) corresponding to and communicating with the clearance hole (23). Fastener (30), when the fastener (30) is connected to the first connecting hole (11) and the second connecting hole (21), to install the LED display module (20) onto the frame (10); when the fastener (30) leaves the first connecting hole (11) or the second connecting hole (21), to remove the LED display module (20) from the frame (10); The fastener (30) is provided with a front operating part (31) on one end of the LED display module (20), and a rear operating part (32) is provided on one end of the frame (10). The front operating part (31) corresponds to the clearance hole (23).

2. The LED display device according to claim 1, characterized in that, The first connecting hole (11) is provided with a first internal thread (12), and the second connecting hole (21) is provided with a second internal thread (22). The fastener (30) includes an external thread section (33) that is connected to the first internal thread (12) or the second internal thread (22). When the external thread segment (33) is connected to the second internal thread (22) and the fastener (30) is also connected to the first connecting hole (11), the LED display module (20) is mounted on the frame (10); when the external thread segment (33) is connected to the first internal thread (12) and the fastener (30) leaves the second connecting hole (21), the LED display module (20) can be removed from the frame (10).

3. The LED display device according to claim 2, characterized in that, The front operating part (31) is disposed in the external thread section (33), and the fastener (30) further includes a clearance section (34) connecting the external thread section (33) and the rear operating part (32); When the external thread segment (33) is connected to the second internal thread (22), the clearance segment (34) is located in the first connecting hole (11) and avoids the first internal thread (12); when the external thread segment (33) is connected to the first internal thread (12), the clearance segment (34) exits the first connecting hole (11).

4. The LED display device according to any one of claims 1 to 3, characterized in that, The LED display device further includes an operating tool (40) capable of operating and cooperating with the front operating part (31) and / or the rear operating part (32), wherein the operating tool (40) passes through the clearance hole (23) to operate and cooperate with the front operating part (31), and the axis of the operating tool (40) is parallel to or at a first preset angle to the axis of the second connecting hole (21); The LED display device further includes a locking member (50) connected in the second connecting hole (21). When the operating tool (40) leaves the front operating part (31) and the axis of the operating tool (40) forms a second preset angle with the axis of the second connecting hole (21), the operating tool (40) and the locking member (50) engage in a locking cooperation so that the operating tool (40) supports the LED display module (20). The second preset angle is greater than the first preset angle.

5. The LED display device according to claim 4, characterized in that, The locking component (50) includes a locking cylinder, the inner hole of which has a locking surface, and the operating tool (40) is capable of locking with the locking surface.

6. The LED display device according to claim 4, characterized in that, The second connecting hole (21) includes a first hole segment (211) corresponding to and communicating with the clearance hole (23) and a second hole segment (212) communicating with the first hole segment (211). The diameter of the second hole segment (212) is greater than the diameter of the first hole segment (211), and the length of the second hole segment (212) is greater than the length of the locking member (50). The locking member (50) is fixed in the second hole segment (212), and the fastener (30) can be movably connected to the first connecting hole (11) and the second hole segment (212).

7. The LED display device according to claim 4, characterized in that, The operating tool (40) is provided with a stop (41) on its side. When the stop (41) is engaged with the front stop of the LED display module (20), the fastener (30) is connected to the first connecting hole (11), and the operating tool (40) moves away from the front operating part (31).

8. The LED display device according to any one of claims 1 to 3, characterized in that, The LED display module (20) includes an LED light board (24) and a rear cover (25) disposed on the rear side of the LED light board (24). The clearance hole (23) is disposed on the LED light board (24), and the second connection hole (21) is disposed on the rear cover (25).

9. The LED display device according to claim 8, characterized in that, The rear cover (25) includes a rear cover body (251) and a connecting cylinder (252) fixed inside the rear cover body (251), and the second connecting hole (21) is provided on the inner hole of the connecting cylinder (252).

10. The LED display device according to any one of claims 1 to 3, characterized in that, The frame (10) is provided with a rectangular window (13) that runs through it in the front-back direction. The diagonal of the rectangular window (13) is larger than the maximum width of the LED display module (20) so that the LED display module (20) can pass through the rectangular window (13).

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