CN217113728U - LED display device - Google Patents

Abstract

The utility model provides a LED display device, include: a support; the LED display is detachably arranged on the bracket through a lockset; the lock comprises a lock core and a long lock hole, wherein the lock core is rotatably arranged at the rear part of the LED display, the long lock hole is arranged in the support, the lock core comprises a shaft body part and a stop arm 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 lock hole in a penetrating mode, and the stop arm is provided with an unlocking position corresponding to the long lock hole and a locking position crossed with the long lock hole; the lockset further comprises a limiting sheet fixed behind the LED display, the shaft body is further provided with a limiting portion, the limiting sheet comprises a limiting clamping groove, and when the limiting clamping groove is in limiting fit with the limiting portion, the stopping arm can be kept at a locking position. The technical scheme of this application has solved the use screw fixation among the correlation technique effectively and needs detachably to install on the support with the LED display screen for the LED display screen dismantles the difficult problem.

Description

LED display device

Technical Field

The utility model relates to a LED shows technical field, particularly, relates to a LED display device.

Background

The LED display screen generally comprises an LED display module, a frame, a power supply module and a data processing module.

LED display screen uses more and more extensively, also more and more high to the installation occasion, and the maintenance around need carrying out to the LED display screen usually when outdoor fixed mounting display screen, the LED display screen needs detachably to install on the support.

The conventional method is that screws are used for fixing the LED display screen on the bracket in a detachable mode, so that the LED display screen is difficult to detach.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a LED display device to use the screw fixation among the solution correlation technique to need detachably to install the LED display screen on the support, make the problem of the difficulty is dismantled to the LED display screen.

In order to achieve the above object, the present invention provides a LED display device, including: a support; the LED display is detachably arranged on the bracket through a lockset; the lock comprises a lock core and a long lock hole, wherein the lock core is rotatably arranged at the rear part of the LED display, the long lock hole is arranged in the support, the lock core comprises a shaft body part and a stop arm 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 lock hole in a penetrating mode, and the stop arm is provided with an unlocking position corresponding to the long lock hole and a locking position crossed with the long lock hole; the lockset further comprises a limiting sheet fixed behind the LED display, the shaft body is further provided with a limiting portion, the limiting sheet comprises a limiting clamping groove, and when the limiting clamping groove is in limiting fit with the limiting portion, the stopping arm can be kept at a locking position.

Furthermore, a first avoiding hole for the shaft body part and the stop arm to penetrate is formed in the limiting sheet, the limiting clamping groove is formed in the hole wall of the first avoiding hole, and the limiting part comprises a limiting protrusion in limiting fit with the limiting clamping groove.

Further, the backstop arm is two along axis body portion circumference interval setting, first dodge the hole including respectively with two backstop arm complex first bar hole sections and second bar hole sections, first dodge the hole still including be located between first bar hole section and the second bar hole section and with axis body portion complex round hole section, first bar hole section passes through the outside intercommunication of opening and spacing piece, spacing draw-in groove sets up on the lateral wall of round hole section and with the adjacent setting of opening.

Furthermore, the extending direction of the limiting clamping groove is parallel to the width direction of the limiting sheet.

Further, first bar pore segment and second bar pore segment set up for axial part symmetry, and the length direction of first bar pore segment becomes acute angle contained angle with the length direction of spacing piece, and wherein, the lateral wall of first bar pore segment has the direction inclined plane of being connected with the lateral wall of opening.

Furthermore, the side of the limiting piece is provided with a fool-proof groove, and the rear part of the LED display is provided with a fool-proof protrusion matched with the fool-proof groove in a fool-proof way.

Further, the LED display rear portion is provided with the mounting hole, the front end of axle body portion is installed in the mounting hole, spacing piece cover is established outside the junction of the front end of axle body portion and the rear end of axle body portion, the operation portion is including the preceding handle hole that is located the front end of axle body portion, be provided with the second that communicates with preceding handle hole on the LED display and dodge the hole, the operation portion is including the back handle hole that is located the rear end of axle body portion, be provided with the third that communicates with back handle hole on the support and dodge the hole, the backstop arm sets up in the lateral wall of the rear end of axle body portion.

Further, the mounting hole is a blind hole, the LED display device further comprises a sealing piece arranged in the mounting hole, and the sealing piece is located between the front end of the shaft body portion and the bottom wall of the mounting hole.

Further, the LED display comprises a box body and an upright post arranged at the front part of the box body, the mounting hole is arranged at the rear part of the box body, the second avoidance hole is arranged on the upright post, and the limiting piece is fixed at the rear part of the box body; the LED display is still including installing in the anterior lamp plate module of box, and the fourth that is provided with on the lamp plate module and dodges the stand dodges the hole.

Furthermore, the limiting sheet is fixed on the back of the box body through a fastener; the back of the box body is provided with a surrounding rib which is arranged around the edge of the limiting sheet.

Use the technical scheme of the utility model, LED display device includes: support, LED display and tool to lock. The LED display is detachably arranged on the bracket through the lockset. The lock comprises a lock cylinder and a long lock hole, the lock cylinder is rotatably arranged at the rear part of the LED display, the long lock hole is formed in the support, the lock cylinder comprises a shaft body part and a stopping arm arranged on the shaft body part, an operation part is arranged on the shaft body part, the shaft body part penetrates through the long lock hole, and the stopping arm is provided with an unlocking position corresponding to the long lock hole and a locking position crossed with the long lock hole. Thus, when the operation part rotates the shaft part to enable the stop arm to be in the locking position, the stop arm is locked inside the support, the lockset cannot be separated from the strip lock hole, and the LED display can be installed on the support. The stop arm is separated from the strip-shaped lock hole when the stop arm rotates from the locking position to the unlocking position through the rotating shaft body part of the operating part, and the LED display can be detached from the support. Therefore, the LED display can be easily assembled and disassembled through the lockset, and the operation is convenient. Therefore, the technical scheme of this application can solve the use screw fixation among the correlation technique and need detachably install on the support with the LED display screen for the difficult problem is dismantled to the LED display screen. The lockset further comprises a limiting piece fixed behind the LED display, a limiting portion is further arranged on the shaft portion and comprises a limiting clamping groove, the limiting clamping groove is formed in the circumferential rotating shaft portion process only along the shaft portion through the operating portion, the limiting portion does not need to move along the axis of the shaft portion, when the limiting clamping groove is in limiting fit with the limiting portion, the stopping arm can be kept in a locking position, the movement along the axis of the shaft portion is omitted, the stopping arm can be prevented from loosening and loosening conveniently to operate, and the reliability of the locking function of the lockset is improved. In this way, the LED display can be securely mounted on the stand.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic rear view of an embodiment of a LED display device according to the present invention;

FIG. 2 shows a schematic sectional view A-A of the LED display device of FIG. 1;

FIG. 3 shows a schematic cross-sectional view of the LED display apparatus of FIG. 1 from the B-B direction;

FIG. 4 shows an enlarged schematic view at C of the LED display device of FIG. 3;

FIG. 5 shows a schematic rear view of an LED display of the LED display device of FIG. 1;

FIG. 6 shows an enlarged schematic view at D of the LED display device of FIG. 5 with the stop arm in the unlocked position;

FIG. 7 shows a partial schematic view of the stop arm of the LED display device of FIG. 5 in a locked position;

FIG. 8 shows an exploded view of the latch of the LED display device of FIG. 1;

FIG. 9 shows an enlarged schematic view at E of the LED display device of FIG. 8;

fig. 10 shows a perspective view of a key cylinder of the LED display device of fig. 1;

FIG. 11 shows a cross-sectional schematic view of the lock cylinder of FIG. 10;

fig. 12 is a schematic perspective view illustrating a spacing sheet of the LED display device of fig. 1;

fig. 13 shows a schematic top view of a spacing piece of the LED display device of fig. 12;

FIG. 14 shows a schematic perspective view of the front side of the LED display device of FIG. 1;

FIG. 15 shows a perspective view of the front side of the support of the LED display device of FIG. 1;

fig. 16 shows a perspective view of the rear side of the stand of the LED display device of fig. 1;

fig. 17 shows a perspective view of the front side of the housing of the LED display of fig. 14.

Wherein the figures include the following reference numerals:

10. a support; 11. a strip-shaped lock hole; 12. a third avoidance hole; 20. an LED display; 21. mounting holes; 22. a second avoidance hole; 23. a box body; 231. encircling the rib; 24. a column; 25. a lamp panel module; 251. a fourth avoidance hole; 26. a fool-proof projection; 30. a lock; 31. a shaft portion; 311. a limiting part; 312. a front operation hole; 313. a rear operation hole; 32. a stopper arm; 33. a limiting sheet; 331. a limiting clamping groove; 3311. opening the gap; 332. a first avoidance hole; 3321. a first strip-shaped hole section; 3322. a second strip-shaped hole section; 3323. a circular bore section; 3324. a guide slope; 333. a fool-proof groove; 34. a fastener; 40. a seal member; 51. a first wrench; 52. a second wrench.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 4 and fig. 15, the present invention provides an LED display device including: support 10, LED display 20 and lock 30. The LED display 20 is detachably mounted on the stand 10 by a locker 30. The lock 30 includes a lock cylinder rotatably disposed at the rear of the LED display 20 and a strip lock hole 11 disposed in the bracket 10. The lock cylinder includes a shaft portion 31 and a stopper arm 32 provided on the shaft portion 31, an operation portion is provided on the shaft portion 31, the shaft portion 31 is inserted into the elongated lock hole 11, and the stopper arm 32 has an unlock position corresponding to the elongated lock hole 11 and a lock position intersecting the elongated lock hole 11. The lock 30 further includes a limiting piece 33 fixed behind the LED display 20, the shaft 31 is further provided with a limiting portion 311, the limiting piece 33 includes a limiting slot 331, and when the limiting slot 331 is in limiting fit with the limiting portion 311, the stopping arm 32 can be kept at the locking position.

By applying the technical scheme of this embodiment, the lock cylinder includes a shaft portion 31 and a stop arm 32 disposed on the shaft portion 31, an operation portion is disposed on the shaft portion 31, the shaft portion 31 penetrates through the elongated lock hole 11, and the stop arm 32 has an unlocking position corresponding to the elongated lock hole 11 and a locking position intersecting with the elongated lock hole 11. When the stopper arm 32 is positioned at the lock position by rotating the shaft portion 31 by the operating portion in this manner, the stopper arm 32 is locked inside the holder 10, the lock 30 cannot be disengaged from the elongated lock hole 11, and the LED display 20 can be attached to the holder 10. When the stopper arm 32 is rotated from the lock position to the unlock position by rotating the shaft portion 31 with the operating portion, the stopper arm 32 is disengaged from the elongated lock hole 11, and the LED display 20 can be detached from the holder 10. Therefore, the LED display 20 can be easily assembled and disassembled through the lock 30, and the operation is convenient. Therefore, the technical scheme of this embodiment can solve and use the screw fixation in order to need detachably to install the LED display screen on the support among the relevant art for LED display screen dismantles the difficult problem. The lock 30 further comprises a limiting piece 33 fixed behind the LED display 20, a limiting portion 311 is further arranged on the shaft body portion 31, the limiting piece 33 comprises a limiting clamping groove 331, the limiting portion 311 does not need to move along the axis of the shaft body portion 31 in the process of rotating the shaft body portion 31 only along the circumferential direction of the shaft body portion 31 through the operation portion, when the limiting clamping groove 331 is in limiting fit with the limiting portion 311, the stopping arm 32 can be kept at a locking position, the movement action along the axis of the shaft body portion 31 is omitted, the stopping arm 32 can be prevented from loosening conveniently to operate, and the reliability of the locking function of the lock is improved. In this way, the LED display 20 can be securely mounted on the stand 10.

The elongated locking hole 11 may be an oblong hole or a rectangular hole.

As shown in fig. 3 to 7, 10 and 11, the stopper piece 33 is provided with a first avoiding hole 332 through which the shaft body 31 and the stopper arm 32 pass. Thus, the stopper piece 33 can be fitted around the outside of the shaft portion 31. The limiting clamping groove 331 is arranged on the hole wall of the first avoiding hole 332, and the limiting portion 311 comprises a limiting protrusion in limiting fit with the limiting clamping groove 331. In this way, in the process of rotating the shaft body 31 only along the circumferential direction of the shaft body 31 by the operation portion, the limiting portion 311 does not need to move along the axis of the shaft body 31, the portion of the limiting piece 33 provided with the limiting clamping groove 331 is thin, the portion of the limiting piece 33 provided with the limiting clamping groove 331 elastically avoids, the limiting protrusion can be directly clamped into the limiting clamping groove 331 to perform limiting matching, and the stopping arm 32 is kept at the locking position. When the stopping arm 32 needs to be rotated from the locking position to the unlocking position, when a large rotating force is applied by rotating the shaft body 31 only along the circumferential direction of the shaft body 31 in the opposite direction of the operating portion, the portion of the limiting piece 33 provided with the limiting clamping groove 331 is thin, the portion of the limiting piece 33 provided with the limiting clamping groove 331 elastically avoids, the limiting protrusion can be separated from the limiting clamping groove 331, and the stopping arm 32 can be rotated from the locking position to the unlocking position.

In the present embodiment, the stopper arm 32 can be switched between the lock position and the unlock position by the operating portion rotating the shaft portion 31 by ninety degrees only in the circumferential direction of the shaft portion 31.

As shown in fig. 4 to 7 and 10 to 13, the stopper arms 32 are provided at two circumferential intervals along the shaft body portion 31. Spacing piece 33 overlaps the in-process in the outside of shaft part 31, because first dodge hole 332 including respectively with two backstop arm 32 complex first bar pore section 3321 and second bar pore section 3322, spacing piece 33 can dodge backstop arm 32, and two backstop arms 32 of being convenient for can pass through first bar pore section 3321 and second bar pore section 3322 respectively smoothly. Simultaneously because first dodge hole 332 still including being located between first bar pore section 3321 and the second bar pore section 3322 and with axis body portion 31 complex round hole section 3323, spacing piece 33 also can dodge axis body portion 31, is convenient for axis body portion 31 smoothly passes through round hole section 3323. The shape of the circular hole section 3323 and the contour of the outer sidewall of the shaft body 31 are both circular, so that the rotation of the shaft body 31 is more smooth. The first strip-shaped hole section 3321 is communicated with the outside of the limiting plate 33 through the opening 3311, so that the part of the limiting plate 33 provided with the limiting clamping groove 331 is thinner due to the opening 3311, and the part of the limiting plate 33 provided with the limiting clamping groove 331 is elastically deformed. The limiting clamping groove 331 is arranged on the side wall of the round hole section 3323 and is adjacent to the opening 3311. In this way, in the process that the stop arm 32 rotates from the unlocking position to the locking position, the distance between the limiting clamping groove 331 and the opening 3311 is short, the limiting protrusion can directly slide along the side wall of the circular hole section 3323, and the limiting protrusion can be quickly and smoothly clamped into the limiting clamping groove 331. Otherwise, the limiting protrusion can be quickly and smoothly rotated out of the limiting slot 331.

It should be noted that the arrangement of the position-limiting clamping slot 331 and the opening 3311 adjacent to each other means that the position-limiting clamping slot 331 and the opening 3311 are both close to the same side of the position-limiting plate 33, and the position-limiting clamping slot 331 and the opening 3311 are spaced apart from each other by a certain distance.

As shown in fig. 4 to 7 and 10 to 13, when the operation portion is not subjected to a rotational force, the extending direction L1 of the limiting slot 331 is parallel to the width direction L2 of the limiting piece 33, the limiting protrusion can be in surface-to-surface contact with the limiting slot 331, and the limiting protrusion cannot rotate, so that the limiting slot 331 and the limiting protrusion can be reliably in limiting engagement.

As shown in fig. 4 to 7 and 10 to 13, the first and second strip hole sections 3321 and 3322 are symmetrically disposed with respect to the shaft portion 31 for easy processing and molding. The length direction L3 of the first strip-shaped hole section 3321 forms an acute included angle with the length direction L4 of the limiting piece 33. When the stop arm 32 is located at the unlocking position and the locking position, the stop arm intersects with the first avoidance hole 332, and the limiting piece 33 can limit the axial movement of the lock cylinder, so that the lock cylinder can only rotate around the axis of the shaft part 31.

In order to make the limit protrusion smoothly rotate into the limit slot 331, the sidewall of the first strip-shaped hole section 3321 has a guide inclined surface 3324 connected with the sidewall of the notch 3311. In the process that the stopping arm 32 rotates from the unlocking position to the locking position, the limiting protrusion abuts against the guide inclined surface 3324 and smoothly slides along the guide inclined surface 3324, smoothly transitions to the side wall of the circular hole section 3323, and is clamped into the limiting clamping groove 331.

As shown in fig. 4 to 7 and 10 to 15, for convenience of processing and forming and convenience of observation during installation, an acute included angle is formed between the length direction L3 of the first strip-shaped hole section 3321 and the length direction of the strip-shaped lock hole 11.

As shown in fig. 6 and 7, in order to improve the assembly efficiency, the side surface of the stopper piece 33 is provided with a fool-proof groove 333, and the rear portion of the LED display 20 is provided with a fool-proof protrusion 26 which is in fool-proof fit with the fool-proof groove 333.

For convenience of operation, there are a first wrench 51 and a second wrench 52 in the related art.

As shown in fig. 3 to 8, 11, and 16, the rear portion of the LED display 20 is provided with a mounting hole 21. The front end of the shaft portion 31 is fitted into the mounting hole 21. The stopper piece 33 is fitted around the joint between the front end of the shaft body 31 and the rear end of the shaft body 31. The operating portion includes a front operating hole 312 located at the front end of the shaft portion 31, the LED display 20 is provided with a second avoiding hole 22 communicated with the front operating hole 312, the operating portion includes a rear operating hole 313 located at the rear end of the shaft portion 31, the bracket 10 is provided with a third avoiding hole 12 communicated with the rear operating hole 313, and the stopper arm 32 is disposed on the side wall of the rear end of the shaft portion 31. The front operation hole 312 and the rear operation hole 313 are isolated from each other and are not communicated. The first wrench 51 is inserted into the front operation hole 312 through the second avoiding hole 22 to drive the shaft body 31 to rotate, so as to facilitate front assembly and disassembly of the LED display 20 and to facilitate front maintenance. The second wrench 52 is inserted into the rear operation hole 313 through the third avoiding hole 12 to drive the shaft body 31 to rotate, so as to facilitate the rear disassembly and assembly of the LED display 20 and the implementation of the rear maintenance.

As shown in fig. 4 to 9, the mounting hole 21 is a blind hole, and the LED display device further includes a sealing member 40 disposed in the mounting hole 21 in order to seal a gap between the front end of the shaft portion 31 and the hole bottom wall of the mounting hole 21. The seal member 40 is located between the front end of the shaft body portion 31 and the hole bottom wall of the mounting hole 21. Thus, the sealing member 40 is provided to make the LED display 20 waterproof. The seal 40 is preferably a gasket. The sealing ring is preferably an O-ring.

As shown in fig. 4 and 17, the LED display 20 includes a case 23 and a pillar 24 provided at a front portion of the case 23, and the mounting hole 21 is provided at a rear portion of the case 23. The second avoiding hole 22 is provided in the pillar 24. In this way, the pillar 24 can improve the structural strength of the case 23, and is convenient for providing the second avoiding hole 22 on the LED display 20. The stopper 33 is fixed to the rear of the case 23. The LED display 20 further includes a lamp panel module 25 installed at the front portion of the box 23, and a fourth avoiding hole 251 provided on the lamp panel module 25 for avoiding the stand column 24, so that the stand column 24 can be exposed in front of the lamp panel module 25.

As shown in fig. 4 and 17, in order to reliably fix the stopper piece 33 to the rear surface of the case 23, the stopper piece 33 is fixed to the rear surface of the case 23 by a fastener 34. The rear of the case 23 is provided with a peripheral rib 231 surrounding the edge of the stopper piece 33. The arrangement of the surrounding ribs 231 limits the limiting pieces 33, and the assembling efficiency is improved.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An LED display device, comprising:

a support (10);

the LED display (20) is detachably arranged on the bracket (10) through a lock (30);

the lock (30) comprises a lock cylinder and a strip lock hole (11), the lock cylinder is rotatably arranged at the rear part of the LED display (20), the strip lock hole (11) is arranged on the support (10), the lock cylinder comprises a shaft part (31) and a stop arm (32) arranged on the shaft part (31), an operation part is arranged on the shaft part (31), the shaft part (31) is arranged in the strip lock hole (11) in a penetrating mode, and the stop arm (32) is provided with an unlocking position corresponding to the strip lock hole (11) and a locking position crossed with the strip lock hole (11);

the lock (30) further comprises a limiting sheet (33) fixed behind the LED display (20), a limiting portion (311) is further arranged on the shaft portion (31), the limiting sheet (33) comprises a limiting clamping groove (331), and the stop arm (32) can be kept at the locking position when the limiting clamping groove (331) is in limiting fit with the limiting portion (311).

2. The LED display device according to claim 1, wherein a first avoiding hole (332) for the shaft portion (31) and the stopping arm (32) to pass through is formed in the limiting sheet (33), the limiting clamping groove (331) is formed in a hole wall of the first avoiding hole (332), and the limiting portion (311) comprises a limiting protrusion in limiting fit with the limiting clamping groove (331).

3. The LED display device according to claim 2, wherein the stopper arm (32) is two that set up along the shaft portion (31) circumference interval, first dodge hole (332) includes first strip-shaped hole section (3321) and second strip-shaped hole section (3322) with two stopper arm (32) complex respectively, first dodge hole (332) still including being located between first strip-shaped hole section (3321) and second strip-shaped hole section (3322) and with shaft portion (31) complex round hole section (3323), first strip-shaped hole section (3321) through opening (3311) with the outside intercommunication of spacing piece (33), spacing draw-in groove (331) set up on the lateral wall of round hole section (3323) and with opening (3311) adjacent setting.

4. The LED display device according to claim 3, wherein the extending direction (L1) of the stopper groove (331) is parallel to the width direction (L2) of the stopper piece (33).

5. The LED display device according to claim 3, wherein the first strip-shaped hole section (3321) and the second strip-shaped hole section (3322) are symmetrically arranged with respect to the shaft portion (31), a length direction (L3) of the first strip-shaped hole section (3321) forms an acute angle with a length direction (L4) of the stopper piece (33), and wherein a side wall of the first strip-shaped hole section (3321) has a guide slope (3324) connected with a side wall of the notch (3311).

6. The LED display device according to any one of claims 1 to 5, wherein a fool-proof groove (333) is provided on a side surface of the position-limiting piece (33), and a fool-proof protrusion (26) which is in fool-proof fit with the fool-proof groove (333) is provided on a rear portion of the LED display (20).

7. The LED display device according to any one of claims 1 to 5, the rear part of the LED display (20) is provided with a mounting hole (21), the front end of the shaft part (31) is mounted in the mounting hole (21), the limiting sheet (33) is sleeved outside the joint of the front end of the shaft body part (31) and the rear end of the shaft body part (31), the operation portion includes a front operation hole (312) at a front end of the shaft portion (31), a second avoidance hole (22) communicated with the front operation hole (312) is arranged on the LED display (20), the operating portion includes a rear operating hole (313) at a rear end of the shaft portion (31), a third avoidance hole (12) communicated with the rear operation hole (313) is arranged on the bracket (10), the stopper arm (32) is provided on a side wall of the rear end of the shaft body (31).

8. The LED display device according to claim 7, wherein the mounting hole (21) is a blind hole, the LED display device further comprising a sealing member (40) disposed in the mounting hole (21), the sealing member (40) being located between a front end of the shaft portion (31) and a hole bottom wall of the mounting hole (21).

9. The LED display device of claim 7,

the LED display (20) comprises a box body (23) and an upright post (24) arranged at the front part of the box body (23), the mounting hole (21) is arranged at the rear part of the box body (23), the second avoidance hole (22) is arranged on the upright post (24), and the limiting sheet (33) is fixed at the rear part of the box body (23);

LED display (20) still including install in the anterior lamp plate module (25) of box (23), be provided with on lamp plate module (25) and dodge the fourth of stand (24) dodges hole (251).

10. The LED display device according to claim 9, wherein the stopper piece (33) is fixed to the rear of the case (23) by a fastener (34); and a surrounding rib (231) arranged around the limiting sheet (33) is arranged behind the box body (23).

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