LED display device

Abstract

The application provides an LED display device, comprising: a support; an LED display device which is detachably installed on the support through a lock; wherein the lock comprises a lock cylinder which is rotatably arranged at the back of the LED display device and a long strip lock hole which is arranged on the support; the lock cylinder comprises a shaft body part and a stop arm which is arranged on the shaft body part; an operation part is arranged on the shaft body part; the shaft body part is arranged in the long strip lock hole; the stop arm has an unlocking position which corresponds to the long strip lock hole and a locking position which intersects with the long strip lock hole; the lock further comprises a limiting piece which is fixed at the back of the LED display device; a limiting part is further arranged on the shaft body part; the limiting piece comprises a limiting clamping groove; when the limiting clamping groove and the limiting part are in limiting cooperation, the stop arm can be kept at the locking position. The technical scheme of the application effectively solves the problem that in the related art, a screw is used to fix the LED display screen which needs to be detachably installed on the support, so that the LED display screen is difficult to disassemble.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LED display, in particular to an LED display device. BACKGROUND

[0002] The LED display screen usually comprises an LED display module, a frame, a power supply module and a data processing module.

[0003] With the increasing application of LED display screens, the requirements for installation occasions are also increasing. When an outdoor fixed installation display screen is installed, the LED display screen usually needs to be maintained in front and back directions, and the LED display screen needs to be detachably installed on a support.

[0004] The conventional method is to use screws to detachably install the LED display screen on the support, which makes the LED display screen difficult to disassemble. SUMMARY

[0005] The main purpose of the present application is to provide an LED display device to solve the problem that the LED display screen is difficult to disassemble by using screws to detachably install the LED display screen on the support in the related art.

[0006] In order to achieve the above purpose, the present application provides an LED display device, comprising: a support; an LED display detachably installed on the support through a lock; wherein the lock comprises a lock cylinder rotatably arranged at the rear of the LED display and a long strip lock hole arranged on the support, the lock cylinder comprises a shaft body and a stop arm arranged on the shaft body, the shaft body is provided with an operation part, the shaft body is arranged in the long strip lock hole, the stop arm has an unlocking position corresponding to the long strip lock hole and a locking position intersecting with the long strip lock hole; the lock further comprises a limiting piece fixed at the rear of the LED display, the shaft body is further provided with a limiting part, the limiting piece comprises a limiting slot, when the limiting slot is limited and matched with the limiting part, the stop arm can be kept at the locking position.

[0007] Further, the limiting piece is provided with a first avoiding hole through which the shaft body and the stop arm pass, the limiting slot is arranged on the hole wall of the first avoiding hole, and the limiting part comprises a limiting protrusion limited and matched with the limiting slot.

[0008] Further, the stop arm is two stop arms arranged along the circumference of the shaft body at intervals, the first avoiding hole comprises a first strip hole segment and a second strip hole segment matched with the two stop arms respectively, the first avoiding hole further comprises a circular hole segment located between the first strip hole segment and the second strip hole segment and matched with the shaft body, the first strip hole segment is communicated with the outside of the limiting piece through an opening, and the limiting slot is arranged on the side wall of the circular hole segment and adjacent to the opening.

[0009] Further, the extension direction of the limiting slot is parallel to the width direction of the limiting piece.

[0010] Further, the first and second strip-shaped hole sections are symmetrically arranged relative to the shaft body part, the length direction of the first strip-shaped hole section forms an acute angle with the length direction of the limiting sheet, and the side wall of the first strip-shaped hole section has a guide inclined surface connected with the side wall of the gap.

[0011] Further, the side surface of the limiting sheet is provided with an anti-fool recess, and the rear part of the LED display is provided with an anti-fool protrusion matched with the anti-fool recess.

[0012] Further, the rear part of the LED display is provided with a mounting hole, the front end of the shaft body part is mounted in the mounting hole, the limiting sheet is sleeved outside the connection between the front end of the shaft body part and the rear end of the shaft body part, the operation part includes a front operation hole located at the front end of the shaft body part, the LED display is provided with a second avoiding hole communicated with the front operation hole, the operation part includes a rear operation hole located at the rear end of the shaft body part, the bracket is provided with a third avoiding hole communicated with the rear operation hole, and the stop arm is arranged on the side wall of the rear end of the shaft body part.

[0013] Further, the mounting hole is a blind hole, and the LED display device further includes a sealing piece arranged in the mounting hole, and the sealing piece is located between the front end of the shaft body part and the hole bottom wall of the mounting hole.

[0014] Further, the LED display includes a box body and a stand column arranged at the front part of the box body, the mounting hole is arranged at the rear part of the box body, the second avoiding hole is arranged at the stand column, and the limiting sheet is fixed at the rear part of the box body; the LED display further includes a lamp plate module mounted at the front part of the box body, and the lamp plate module is provided with a fourth avoiding hole avoiding the stand column.

[0015] Further, the limiting sheet is fixed at the rear part of the box body through a fastener; and the rear part of the box body is provided with a surrounding rib surrounding the edge of the limiting sheet.

[0016] According to the technical solution of this invention, the LED display device includes a bracket, an LED display, and a lock. The LED display is detachably mounted on the bracket via the lock. The lock includes a lock cylinder rotatably disposed at the rear of the LED display and an elongated lock hole disposed on the bracket. The lock cylinder includes a shaft portion and a stop arm disposed on the shaft portion. An operating part is disposed on the shaft portion, which passes through the elongated lock hole. The stop arm has an unlocking position corresponding to the elongated lock hole and a locking position intersecting the elongated lock hole. Thus, by rotating the shaft portion through the operating part, when the stop arm is in the locked position, the stop arm is locked inside the bracket, and the lock cannot disengage from the elongated lock hole, allowing the LED display to be mounted on the bracket. By rotating the shaft portion through the operating part, when the stop arm is rotated from the locked position to the unlocked position, the stop arm disengages from the elongated lock hole, and the LED display can be detached from the bracket. This lock allows for easy assembly and disassembly of the LED display, making operation convenient. Therefore, the technical solution of this application can solve the problem in related technologies where screws are used to fix the LED display screen to the bracket, making disassembly of the LED display screen difficult. The lock also includes a limiting piece fixed to the back of the LED display screen, and a limiting part is also provided on the shaft body. The limiting piece includes a limiting groove. During the operation of rotating the shaft body only circumferentially along the shaft body, it is not necessary to move the limiting part along the axis of the shaft body. When the limiting groove and the limiting part are engaged, the stop arm can be kept in the locked position, eliminating the need for movement along the axis of the shaft body, making operation convenient and preventing the stop arm from loosening, thus improving the reliability of the lock's locking function. In this way, the LED display screen can be securely mounted on the bracket. Attached Figure Description

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

[0018] Figure 1 A rear view schematic diagram of an embodiment of the LED display device according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A schematic cross-sectional view of the LED display device from direction AA;

[0020] Figure 3 It shows Figure 1 A cross-sectional view of an LED display device from the BB direction;

[0021] Figure 4 It shows Figure 3 Enlarged schematic diagram of point C of the LED display device;

[0022] Figure 5a rear view schematic of the LED display of the LED display device of Figure 1

[0023] Figure 6 a zoomed-in schematic of D of the LED display device of Figure 5

[0024] Figure 7 a zoomed-in schematic of E of the LED display device of Figure 5

[0025] Figure 8 an exploded structural schematic of the lock of the LED display device of Figure 1

[0026] Figure 9 a zoomed-in schematic of E of the LED display device of Figure 8

[0027] Figure 10 a perspective structural schematic of the lock cylinder of the LED display device of Figure 1

[0028] Figure 11 a cross-sectional schematic of the lock cylinder of Figure 10

[0029] Figure 12 a perspective structural schematic of the limiting sheet of the LED display device of Figure 1

[0030] Figure 13 a top view schematic of the limiting sheet of the LED display device of Figure 12

[0031] Figure 14 a perspective structural schematic of the front side of the LED display of the LED display device of Figure 1

[0032] Figure 15 a perspective structural schematic of the front side of the bracket of the LED display device of Figure 1

[0033] Figure 16 a perspective structural schematic of the rear side of the bracket of the LED display device of Figure 1

[0034] Figure 17 a perspective structural schematic of the front side of the box of the LED display of Figure 14

[0035] wherein the above figures comprise the following reference signs:​​​​​​​​​​​​​

[0036] 10, support; 11, long lock hole; 12, third avoiding hole; 20, LED display; 21, mounting hole; 22, second avoiding hole; 23, box; 231, surrounding rib; 24, stand; 25, lamp plate module; 251, fourth avoiding hole; 26, foolproof convex; 30, lock; 31, shaft body; 311, limiting part; 312, front operation hole; 313, rear operation hole; 32, stop arm; 33, limiting sheet; 331, limiting slot; 3311, gap; 332, first avoiding hole; 3321, first strip hole section; 3322, second strip hole section; 3323, round hole section; 3324, guide slope; 333, foolproof groove; 34, fastener; 40, sealing member; 51, first wrench; 52, second wrench. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0038] It should be noted that the terms used herein are only intended to describe specific embodiments, and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a reference to the presence of a feature, step, operation, device, component, and / or combinations thereof.

[0039] Unless specifically stated otherwise, the relative arrangements of the components and steps illustrated in these embodiments and the numerical expressions and values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportion relationship. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification when appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0040] As Figures 1 to 4 and Figure 15 shown, the present application provides a kind of LED display device, including: support 10, LED display 20 and lock 30.LED display 20 is detachably mounted on support 10 by lock 30.Therein, lock 30 includes lock cylinder rotatably arranged in the rear of LED display 20 and long strip lock hole 11 arranged in support 10.Lock cylinder includes shaft body part 31 and the stop arm 32 of setting on shaft body part 31, shaft body part 31 is provided with operating part, shaft body part 31 is arranged in long strip lock hole 11, stop arm 32 has the unlocking position corresponding with long strip lock hole 11 and the locking position intersecting with long strip lock hole 11.Lock 30 further includes the limiting piece 33 of being fixed in the rear of LED display 20, shaft body part 31 is further provided with limiting portion 311, limiting piece 33 includes limiting clamping groove 331, when limiting clamping groove 331 and limiting portion 311 limit cooperation, can make stop arm 32 keep in locking position.

[0041] The technical scheme of the embodiment is applied, lock cylinder includes shaft body part 31 and the stop arm 32 of setting on shaft body part 31, shaft body part 31 is provided with operating part, shaft body part 31 is arranged in long strip lock hole 11, stop arm 32 has the unlocking position corresponding with long strip lock hole 11 and the locking position intersecting with long strip lock hole 11.In this way, by operating part rotation shaft body part 31, make stop arm 32 be in locking position, stop arm 32 is locked in the inside of support 10, lock 30 can not be separated from long strip lock hole 11, LED display 20 can be installed on support 10.By operating part rotation shaft body part 31, make stop arm 32 rotate from locking position to unlocking position, stop arm 32 is separated from long strip lock hole 11, LED display 20 can be disassembled from support 10.In this way, through lock 30, the dismounting of LED display 20 can be easily realized, and it is convenient to operate.Therefore, the technical scheme of the embodiment can solve the problem that the LED display screen needs to be detachably mounted on the support by using screw in the related art, so that the LED display screen is difficult to disassemble.Lock 30 further includes the limiting piece 33 of being fixed in the rear of LED display 20, shaft body part 31 is further provided with limiting portion 311, limiting piece 33 includes limiting clamping groove 331, in the process of only rotating shaft body part 31 along the circumference of shaft body part 31 by operating part, limiting portion 311 does not need to move along the axis of shaft body part 31, when limiting clamping groove 331 and limiting portion 311 limit cooperation, can make stop arm 32 keep in locking position, save the movement action along the axis of shaft body part 31, so that it is convenient to operate and can prevent stop arm 32 from loosening, improve the reliability of lock function.In this way, LED display 20 can be firmly installed on support 10.

[0042] It should be noted that the above-mentioned long strip lock hole 11 can be a long circular hole or a rectangular hole.

[0043] As shown in Figures 3 to 7 , Figure 10 and Figure 11 , the limiting sheet 33 is provided with a first avoiding hole 332 for the shaft body part 31 and the stop arm 32 to pass through. In this way, the limiting sheet 33 can be sleeved on the outside of the shaft body part 31. The limiting groove 331 is arranged on the hole wall of the first avoiding hole 332, and the limiting part 311 includes a limiting protrusion for limiting cooperation with the limiting groove 331. In this way, during the rotation of the shaft body part 31 along the circumferential direction of the shaft body part 31 by the operation part, the limiting part 311 does not need to move along the axis of the shaft body part 31, the part of the limiting sheet 33 provided with the limiting groove 331 is thin, the part of the limiting sheet 33 provided with the limiting groove 331 elastically avoids, the limiting protrusion can be directly clamped into the limiting groove 331 for limiting cooperation, and the stop arm 32 is kept in the locked position. When it is needed to rotate the stop arm 32 from the locked position to the unlocked position, the shaft body part 31 is rotated along the circumferential direction of the shaft body part 31 by the operation part in the opposite direction by applying a larger rotating force, the part of the limiting sheet 33 provided with the limiting groove 331 is thin, the part of the limiting sheet 33 provided with the limiting groove 331 elastically avoids, the limiting protrusion can be separated from the limiting groove 331, and the stop arm 32 can be rotated from the locked position to the unlocked position.

[0044] In this embodiment, the shaft body part 31 is rotated by ninety degrees along the circumferential direction of the shaft body part 31 by the operation part, so that the stop arm 32 can be switched between the locked position and the unlocked position.

[0045] As shown in Figures 4 to 7 , Figures 10 to 13As shown, there are two stop arms 32 spaced apart circumferentially along the shaft portion 31. During the process of the limiting plate 33 being fitted onto the outer side of the shaft portion 31, since the first clearance hole 332 includes a first strip-shaped hole segment 3321 and a second strip-shaped hole segment 3322 respectively cooperating with the two stop arms 32, the limiting plate 33 can avoid the stop arms 32, allowing the two stop arms 32 to pass smoothly through the first strip-shaped hole segment 3321 and the second strip-shaped hole segment 3322 respectively. Simultaneously, since the first clearance hole 332 also includes a circular hole segment 3323 located between the first strip-shaped hole segment 3321 and the second strip-shaped hole segment 3322 and cooperating with the shaft portion 31, the limiting plate 33 can also avoid the shaft portion 31, allowing the shaft portion 31 to pass smoothly through the circular hole segment 3323. The shape of the aforementioned circular hole segment 3323 and the outline of the outer wall of the shaft portion 31 are both circular, thus making the rotation of the shaft portion 31 more stable. The first strip-shaped segment 3321 communicates with the outside of the limiting piece 33 through a notch 3311. This notch 3311 makes the portion of the limiting piece 33 with the limiting groove 331 thinner, facilitating elastic deformation of this portion. The limiting groove 331 is located on the side wall of the circular segment 3323 and adjacent to the notch 3311. Thus, during the rotation of the stop arm 32 from the unlocked position to the locked position, the distance between the limiting groove 331 and the notch 3311 is short, allowing the limiting protrusion to slide directly along the side wall of the circular segment 3323 and quickly and smoothly engage with the limiting groove 331. Conversely, the limiting protrusion can quickly and smoothly rotate out of the limiting groove 331.

[0046] It should be noted that the adjacent arrangement of the limiting slot 331 and the notch 3311 means that the limiting slot 331 and the notch 3311 are both close to the same side of the limiting piece 33, and the limiting slot 331 and the notch 3311 are spaced a certain distance apart.

[0047] like Figures 4 to 7 , Figures 10 to 13 As shown, when the operating part is not subjected to rotational force, the extension direction L1 of the limiting groove 331 is parallel to the width direction L2 of the limiting piece 33, and the limiting protrusion and the limiting groove 331 can be in surface contact. The limiting protrusion cannot rotate, so that the limiting groove 331 and the limiting protrusion can reliably perform limiting engagement.

[0048] like Figures 4 to 7 , Figures 10 to 13 As shown, for ease of processing and forming, the first strip-shaped hole segment 3321 and the second strip-shaped hole segment 3322 are symmetrically arranged relative to the shaft body portion 31. The length direction L3 of the first strip-shaped hole segment 3321 forms an acute angle with the length direction L4 of the limiting piece 33. When the stop arm 32 is in the unlocked position and the locked position, it intersects with the first clearance hole 332. The limiting piece 33 can restrict the axial movement of the lock cylinder so that the lock cylinder can only rotate around the axis of the shaft body portion 31.

[0049] In order to make the limiting protrusion smoothly turn into the limiting slot 331, the side wall of the first strip hole section 3321 has a guide slope 3324 connected with the side wall of the gap 3311. In the process of turning the stop arm 32 from the unlocking position to the locking position, the limiting protrusion abuts against the guide slope 3324 and smoothly slides along the guide slope 3324, smoothly transitions to the side wall of the round hole section 3323, and then is clamped into the limiting slot 331.

[0050] As shown in Figures 4 to 7 , Figures 10 to 15 , in order to facilitate processing and molding, and facilitate observation during installation, the length direction L3 of the first strip hole section 3321 is at an acute angle with the length direction of the long strip lock hole 11.

[0051] As shown in Figure 6 and Figure 7 , in order to improve assembly efficiency, the side surface of the limiting sheet 33 is provided with a foolproof groove 333, and the rear part of the LED display 20 is provided with a foolproof protrusion 26 matched with the foolproof groove 333.

[0052] In order to facilitate operation, the related art has a first wrench 51 and a second wrench 52.

[0053] As shown in Figures 3 to 8 , Figure 11 and Figure 16 , the rear part of the LED display 20 is provided with a mounting hole 21. The front end of the shaft body part 31 is mounted in the mounting hole 21. The limiting sheet 33 is sleeved outside the connection between the front end of the shaft body part 31 and the rear end of the shaft body part 31. The operating part includes a front operating hole 312 at the front end of the shaft body part 31, and the LED display 20 is provided with a second avoiding hole 22 communicated with the front operating hole 312. The operating part includes a rear operating hole 313 at the rear end of the shaft body part 31, and the bracket 10 is provided with a third avoiding hole 12 communicated with the rear operating hole 313. The stop arm 32 is arranged on the side wall of the rear end of the shaft body part 31. The front operating hole 312 and the rear operating hole 313 are isolated from each other and not communicated. The first wrench 51 is inserted into the front operating hole 312 through the second avoiding hole 22 to drive the shaft body part 31 to rotate, so as to facilitate the front disassembly and assembly of the LED display 20 and facilitate the front maintenance. The second wrench 52 is inserted into the rear operating hole 313 through the third avoiding hole 12 to drive the shaft body part 31 to rotate, so as to facilitate the rear disassembly and assembly of the LED display 20 and facilitate the rear maintenance.

[0054] As shown in Figures 4 to 9As shown, the mounting hole 21 is a blind hole, in order to seal the gap between the front end of the shaft body 31 and the hole bottom wall of the mounting hole 21, the LED display device further comprises a sealing member 40 arranged in the mounting hole 21. The sealing member 40 is located between the front end of the shaft body 31 and the hole bottom wall of the mounting hole 21. In this way, the arrangement of the sealing member 40 enables the LED display 20 to have a waterproof function. The sealing member 40 is preferably a sealing ring. The sealing ring is preferably an O-shaped sealing ring.

[0055] As shown in Figure 4 and Figure 17 The LED display 20 comprises a box body 23 and a stand 24 arranged at the front of the box body 23, and the mounting hole 21 is arranged at the rear of the box body 23. The second avoiding hole 22 is arranged in the stand 24. In this way, the stand 24 can improve the structural strength of the box body 23, and facilitate the arrangement of the second avoiding hole 22 on the LED display 20. The limiting sheet 33 is fixed to the rear of the box body 23. The LED display 20 further comprises a lamp panel module 25 arranged at the front of the box body 23, and the lamp panel module 25 is provided with a fourth avoiding hole 251 avoiding the stand 24, so that the stand 24 can be exposed in front of the lamp panel module 25.

[0056] As shown in Figure 4 and Figure 17 In order to facilitate the reliable fixation of the limiting sheet 33 to the rear of the box body 23, the limiting sheet 33 is fixed to the rear of the box body 23 by the fastener 34. The rear of the box body 23 is provided with a surrounding rib 231 surrounding the edge of the limiting sheet 33. The arrangement of the surrounding rib 231 limits the limiting sheet 33, improving the assembly efficiency.

[0057] In the description of the present application, it should be understood that the orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0058] For purposes of the description hereinafter, spatial or directional terms, for example, "above", "below", "upper", "lower", and the like, can be used, and relate to the device as illustrated in the figures. However, it is to be understood that no absolute or relative orientation of the device is intended or implied, unless specifically described as such. Terms concerning attachments, coupling and the like, such as "connected" and "coupled" and the like, are to be construed in accordance with their normal meanings, that is, as referring to an indirect or direct connection or coupling. Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to". Any reference to "comprising" or "containing" is to be construed as meaning "comprising or containing, but not limited to".

[0059] In addition, it should be pointed out that the use of the terms "first", "second" and the like, to describe various elements, is merely intended to differentiate the elements from one another, and does not connote any special order or order of precedence, unless otherwise specifically indicated. Thus, the use of the terms "first", "second" and the like, is not intended to limit the scope of the present application, and is not intended to connote any special order or order of precedence.

[0060] The preferred embodiments herein disclosed are not intended to limit or restrict the scope of the application, but merely convey the best mode contemplated by the inventors of carrying out the claimed application. Any modifications, changes, improvements, and equivalents that fall within the spirit and scope of the application should be considered as falling within the scope of the application.

Claims

1. An LED display device, characterized by, The utility model relates to a kind of LED display and its lock, including: Support (10); LED display (20), detachably mounted on the support (10) by lock (30); Wherein, the lock (30) includes lock cylinder rotatably arranged at the rear of the LED display (20), and long strip lock hole (11) arranged in the support (10), the lock cylinder includes shaft body part (31) and stop arm (32) arranged on the shaft body part (31), operating part is arranged on the shaft body part (31), the shaft body part (31) is arranged in the long strip lock hole (11), the stop arm (32) has the corresponding unlocking position of long strip lock hole (11) and the locking position of crossing long strip lock hole (11), wherein, the long strip lock hole (11) is long round hole or rectangular hole; The lock (30) further includes limiting sheet (33) fixed at the rear of the LED display (20), the shaft body part (31) is further provided with limiting portion (311), the limiting sheet (33) includes limiting clamping groove (331), when the limiting clamping groove (331) is limited and cooperates with the limiting portion (311), the stop arm (32) can be kept in the locking position; The limiting sheet (33) is provided with the first avoiding hole (332) for the shaft body part (31) and the stop arm (32) to pass through, the limiting clamping groove (331) is arranged on the hole wall of the first avoiding hole (332), and the limiting portion (311) includes limiting protrusion limited and cooperated with the limiting clamping groove (331); The stop arm (32) is two and is arranged along the circumferential direction of the shaft body part (31) with interval, the first avoiding hole (332) includes first strip hole section (3321) and second strip hole section (3322) respectively cooperated with two stop arms (32), the first avoiding hole (332) further includes circular hole section (3323) between the first strip hole section (3321) and the second strip hole section (3322) and cooperated with the shaft body part (31), the first strip hole section (3321) is communicated with the outside of the limiting sheet (33) by aperture (3311), and the limiting clamping groove (331) is arranged on the side wall of the circular hole section (3323) and is adjacent to the aperture (3311) and is arranged; The length direction (L3) of the first strip hole section (3321) is acute angle with the length direction (L4) of the limiting sheet (33), wherein, the side wall of the first strip hole section (3321) has guide inclined surface (3324) connected with the side wall of the aperture (3311).

2. The LED display apparatus of claim 1, wherein, The extension direction (L1) of the limiting clamping groove (331) is parallel to the width direction (L2) of the limiting sheet (33).

3. The LED display apparatus of claim 1, wherein, The first strip hole section (3321) and the second strip hole section (3322) are symmetrically arranged relative to the shaft body part (31).

4. The LED display apparatus of claim 1, wherein, The side of the limiting sheet (33) is provided with fool-proof groove (333), and the rear of the LED display (20) is provided with fool-proof protrusion (26) which is fool-proof cooperated with the fool-proof groove (333).

5. The LED display apparatus of claim 1, wherein, The rear of the LED display (20) is provided with a mounting hole (21), the front end of the shaft body (31) is mounted in the mounting hole (21), the limiting sheet (33) is sleeved outside the connection between the front end of the shaft body (31) and the rear end of the shaft body (31), the operation part includes a front operation hole (312) located at the front end of the shaft body (31), the LED display (20) is provided with a second avoiding hole (22) in communication with the front operation hole (312), the operation part includes a rear operation hole (313) located at the rear end of the shaft body (31), the bracket (10) is provided with a third avoiding hole (12) in communication with the rear operation hole (313), and the stop arm (32) is arranged on the side wall of the rear end of the shaft body (31).

6. The LED display apparatus of claim 5, wherein, The mounting hole (21) is a blind hole, and the LED display device further comprises a sealing piece (40) arranged in the mounting hole (21), and the sealing piece (40) is located between the front end of the shaft body (31) and the hole bottom wall of the mounting hole (21).

7. The LED display device according to claim 5, wherein, The LED display (20) comprises a box body (23) and a column (24) arranged at the front of the box body (23), the mounting hole (21) is arranged at the rear of the box body (23), the second avoiding hole (22) is arranged at the column (24), and the limiting sheet (33) is fixed to the rear of the box body (23); The LED display (20) further comprises a lamp plate module (25) mounted at the front of the box body (23), and the lamp plate module (25) is provided with a fourth avoiding hole (251) for avoiding the column (24).

8. The LED display apparatus of claim 7, wherein, The limiting sheet (33) is fixed to the rear of the box body (23) by a fastener (34), and the rear of the box body (23) is provided with a surrounding rib (231) surrounding the edge of the limiting sheet (33).

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