LED poster screen capable of being quickly disassembled and assembled

Abstract

The utility model discloses an LED poster screen capable of being quickly disassembled and assembled. The LED poster screen comprises a screen body, a base and a locking mechanism. Counter bores are formed in the lower end face of the screen body. The base is provided with a vertical rod, the vertical rod can be inserted into the counter bore, a first groove is formed in the side wall of the vertical rod, and a first long-strip-shaped through hole is formed in the groove bottom of the first groove. The locking mechanism comprises a fixing seat and a locking rod, the fixing seat is fixedly installed on the screen body, the locking rod is slidably connected to the fixing seat in the front-back direction, a locking pin is arranged at the front end of the locking rod, and the locking pin can enter or leave the counter bore. When the lock pin is in the first state, the lock rod moves forwards to enable the lock pin to penetrate through the first long-strip-shaped through hole to move into the first groove or move backwards to be separated from the first groove. When the lock pin is in the second state, the vertical rod abuts against the lock pin to limit the lock rod to move in the front-back direction; when the lock pin is in the second state and located in the first groove, the lock pin abuts against the groove wall of the first groove so as to limit the vertical rod to move in the vertical direction. The LED poster screen capable of being rapidly disassembled and assembled is rapid and convenient to install, time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screens, in particular to a LED poster screen that can be quickly disassembled and assembled. Background Art

[0002] Most existing poster screens are installed using a base or diagonal brace. Diagonal brace installations lack wheels, making them difficult to move. Conventional base installations typically use a triangular support plate on the back of the screen, which is screwed to the base and back of the screen, respectively. This installation method is time-consuming, labor-intensive, and inefficient. Utility Model Content

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a LED poster screen that can be quickly disassembled and assembled.

[0004] The embodiment of the present invention provides a quickly detachable LED poster screen, the quickly detachable LED poster screen comprising:

[0005] A screen body, a countersunk hole is provided on its lower end surface, and a through hole connected to the countersunk hole is provided on one side of the screen body;

[0006] The base is provided with a vertical rod, the vertical rod can be inserted into the countersunk hole, the side wall of the vertical rod is provided with a first groove, and the bottom of the first groove is provided with a first elongated through hole;

[0007] The locking mechanism includes a fixing base and a locking rod, wherein the fixing base is fixedly mounted on the screen body, the locking rod is slidably connected to the fixing base in the front-to-back direction, and a locking pin extending radially is provided at the front end of the locking rod, and the locking pin can enter or exit the counterbore through the through hole;

[0008] The locking rod is capable of rotating about its own axis to switch the locking pin between a first state and a second state, wherein: when the locking pin is in the first state, the locking rod moves forward to allow the locking pin to pass through the first elongated through-hole and move into the first groove or move backward to exit the first groove; when the locking pin is in the second state, the vertical rod is capable of preventing the locking pin from reciprocating between the front and rear sides of the first elongated through-hole;

[0009] When the locking pin is in the second state and is located in the first groove, the locking pin can abut against the groove wall of the first groove to limit the vertical movement of the vertical rod.

[0010] The LED poster screen that can be quickly disassembled according to the embodiment of the present invention has at least the following technical effects: when the base and the screen body need to be assembled together, the locking rod is rotated to put the locking pin in the first state, the locking pin is aligned with the first long through hole at this time, the locking rod is pushed forward to make the locking pin pass through the first long through hole and enter the first groove, and then the locking rod is rotated to put the locking pin in the second state, the locking pin is not aligned with the first long through hole at this time, the groove bottom of the first groove restricts the locking pin from moving backward and disengaging from the first groove, and the locking pin can respectively abut against the upper groove wall and the lower groove wall of the first groove to restrict the vertical rod from moving in the up and down directions, thereby completing the assembly of the base and the screen body; when the base and the screen body need to be disassembled from each other, the locking rod is rotated to put the locking pin in the first state, the locking pin is aligned with the first long through hole at this time, the locking rod is pushed backward to make the locking pin pass through the first long through hole and disengage from the first groove, and the vertical rod can move downward to disengage from the countersunk hole, thereby completing the mutual disassembly of the base and the screen body. The LED poster screen that can be quickly disassembled is quick and convenient to install, saving time and effort.

[0011] According to some embodiments of the present invention, the locking mechanism also includes a handle, the fixing seat is provided with an external thread, the handle is provided with an internal thread, the handle is threadedly connected to the fixing seat, the handle can be rotated relative to the fixing seat so that the handle moves in the front and rear directions, and the locking rod is provided with a convex portion; when the locking pin is in the second state and is located in the first groove, the handle can move backward and abut against the convex portion and apply a backward force to the locking rod, so that the locking pin applies a backward force to the bottom of the first groove.

[0012] According to some embodiments of the present invention, the locking mechanism also includes a reset spring, the locking rod is provided with a convex portion, the reset spring is sleeved on the locking rod, the front end of the reset spring is connected to the fixed seat, and the rear end of the reset spring is connected to the front end of the convex portion, and the reset spring is always in a compressed state.

[0013] According to some embodiments of the present invention, the locking mechanism also includes a pad, which is located behind the screen body, and the fixed seat is located behind the pad. The pad is fixedly connected to the screen body and the fixed seat respectively, and the pad is provided with a receiving hole; when the locking pin is located in the receiving hole, the front end of the fixed seat can abut against the locking pin to limit the locking rod from moving backward.

[0014] According to some embodiments of the present invention, the accommodating hole is in the shape of an elongated strip, and the accommodating hole is aligned with the first elongated through hole; when the locking pin is in the first state and is located in the accommodating hole, the hole wall of the accommodating hole restricts the rotation of the locking rod.

[0015] According to some embodiments of the present invention, the vertical rod is fixedly installed with a buckle, the buckle is arranged in the first groove, the buckle is provided with a second long through hole, the second long through hole is aligned with the first long through hole, the front end face of the buckle is provided with a second groove, and when the locking pin is in the second state and is located in the second groove, the locking pin respectively abuts against the upper side wall and the lower side wall of the second groove.

[0016] According to some embodiments of the present invention, the second groove extends in a horizontal direction, and the second elongated through hole extends in a vertical direction.

[0017] According to some embodiments of the present invention, a rotating portion is fixedly provided at the rear end of the locking rod.

[0018] According to some embodiments of the present invention, a roller assembly is provided at the lower end of the base.

[0019] According to some embodiments of the present invention, there are multiple vertical rods, multiple countersunk holes, and multiple locking mechanisms, and the multiple vertical rods, multiple countersunk holes, and multiple locking mechanisms correspond to each other one by one.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 This is a schematic structural diagram of a quickly detachable LED poster screen according to some embodiments of the present invention;

[0023] Figure 2 This is a schematic diagram of the connection between the base and the screen body in some embodiments of the present utility model;

[0024] Figure 3 It is a cross-sectional view of a quickly detachable LED poster screen according to some embodiments of the present invention;

[0025] Figure 4 It is a schematic structural diagram of the base of some embodiments of the present utility model;

[0026] Figure 5 It is a schematic structural diagram of the buckle of some embodiments of the present utility model;

[0027] Figure 6 This is a partial structural diagram of a quickly detachable LED poster screen according to some embodiments of the present invention;

[0028] Figure 7 This is an exploded view of a partial structure of a quickly detachable LED poster screen in some embodiments of the present invention;

[0029] Figure 8 is a structural schematic diagram of some embodiments of the present invention in which the lock pin is in a first state and is located outside the first groove;

[0030] Figure 9 is a structural schematic diagram of some embodiments of the present invention in which the lock pin is in a first state and located in a first groove;

[0031] Figure 10 is a schematic structural diagram of some embodiments of the present invention in which the lock pin is in the second state and located in the first groove;

[0032] Figure 11 It is a schematic diagram of the structure in which the lock pin and the buckle are relatively fixed in some embodiments of the utility model.

[0033] Figure Number:

[0034] Screen body 100, countersunk hole 110, via hole 120, roller assembly 130;

[0035] Base 200, vertical rod 210, first groove 211, first long through hole 212, buckle 220, second long through hole 221, second groove 222;

[0036] Locking mechanism 300 , fixing seat 310 , external thread 311 , locking rod 320 , protrusion 321 , locking pin 322 , rotating portion 323 , handle 330 , internal thread 331 , return spring 340 , backing plate 350 , and receiving hole 351 . DETAILED DESCRIPTION

[0037] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0039] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings.

[0042] According to some embodiments of the present invention, referring to Figures 1 to 4 、 Figures 6 to 8 The LED poster screen that can be quickly disassembled and assembled includes a screen body 100, a base 200 and a locking mechanism 300. The screen body 100 is placed vertically, and the lower end surface of the screen body 100 is provided with an upwardly concave countersunk hole 110. The upper end surface of the base 200 is fixedly provided with a vertical rod 210 extending in the up-down direction, and the vertical rod 210 can be inserted upward into the countersunk hole 110. The side wall of the vertical rod 210 is radially concave to form a first groove 211, and the bottom of the first groove 211 is provided with a first long through hole 212, and the first long through hole 212 extends in the up-down direction. The locking mechanism 300 includes a fixing base 310 and a locking rod 320. The locking rod 320 extends in the front-to-back direction. The fixing base 310 is fixedly mounted on the rear side of the screen body 100. The locking rod 320 is slidably connected to the fixing base 310 in the front-to-back direction. A radially extending locking pin 322 is provided at the front end of the locking rod 320. The locking pin 322 can enter the counterbore 110 forward or exit the counterbore 110 backward under the drive of the locking rod 320. A through hole 120 connected to the counterbore 110 is provided on the rear side of the screen body 100. The locking pin 322 can pass through the through hole 120 into the counterbore 110 and then pass through the first elongated through hole 212 into the first groove 211. The locking pin 322 located in the first groove 211 can move backward, pass through the first elongated through hole 212, and then pass through the through hole 120 to exit the counterbore 110.

[0043] The locking rod 320 can rotate about its own axis to switch the locking pin 322 between the first state and the second state, wherein:

[0044] When the locking pin 322 is in the first state, the locking pin 322 extends in the up and down directions. Since the locking pin 322 is aligned with the first long through hole 212, the locking rod 320 can move forward to drive the locking pin 322 to pass through the first long through hole 212 and move into the first groove 211; the locking rod 320 can move backward to drive the locking pin 322 to pass through the first long through hole 212 to disengage from the first groove 211.

[0045] When the locking pin 322 is in the second state, it extends in the left-right direction. Since the locking pin 322 is not aligned with the first elongated through-hole 212, the vertical rod 210 can collide with the locking pin 322, thereby restricting the forward and backward movement of the locking rod 320. For example, when the locking pin 322 is in the second state and located in the first groove 211, when the locking rod 320 moves backward, the locking pin 322 can abut against the bottom of the first groove 211, thereby preventing the locking pin 322 from disengaging from the first groove 211.

[0046] When the locking pin 322 is in the second state and located in the first groove 211 , the locking pin 322 can abut against the upper and lower groove walls of the first groove 211 to restrict the vertical movement of the vertical rod 210 , thereby preventing the vertical rod 210 from escaping from the counterbore 110 .

[0047] Reference Figures 8 to 11 When the cam 320 is in the unlock state, the locking pin 322 is in the unlock state, and the locking pin 322 is in the unlock state.

[0048] Reference Figures 8 to 11 When the base 200 and the screen body 100 need to be disassembled from each other, the locking rod 320 is rotated to put the locking pin 322 in the first state, so that the locking pin 322 is aligned with the first long through hole 212, and the locking rod 320 is driven to move backward so that the locking pin 322 passes through the first long through hole 212 and disengages from the first groove 211. At this time, the vertical rod 210 can move downward to disengage from the countersunk hole 110, thereby completing the mutual disassembly of the base 200 and the screen body 100.

[0049] Preferably, a rotating portion 323 is fixedly provided at the rear end of the locking rod 320 , so that the locking rod 320 can be rotated by grasping and rotating the rotating portion 323 .

[0050] The LED poster screen that can be quickly disassembled and assembled is quick and convenient to install, saving time and effort.

[0051] According to some embodiments of the present invention, referring to Figures 6 to 11 The locking mechanism 300 further includes a handle 330. The outer peripheral wall of the fixing base 310 is provided with an external thread 311, and the inner peripheral wall of the handle 330 is provided with an internal thread 331. The handle 330 is threadedly connected to the fixing base 310. The handle 330 can be rotated relative to the fixing base 310 so that the handle 330 moves in the front-rear direction relative to the fixing base 310. The rear end of the locking rod 320 is provided with a protrusion 321. It can be understood that, referring to Figure 10 and Figure 11 When the locking pin 322 is in the second state and located in the first groove 211, the handle 330 is rotated so that the handle 330 moves backward and abuts the protrusion 321 and applies a backward force to the locking rod 320, so that the locking pin 322 applies a backward force to the bottom of the first groove 211, that is, the locking pin 322 is tightly pressed against the bottom of the first groove 211, and the locking pin 322 is relatively fixed to the first groove 211, thereby preventing the locking pin 322 from rotating to the first state under the interference of external factors and independently passing through the first elongated through hole 212 and disengaging from the first groove 211. The handle 330 plays the role of locking the locking pin 322.

[0052] According to some embodiments of the present invention, referring to Figures 6 to 11 The locking mechanism 300 also includes a return spring 340. The locking rod 320 is provided with a protrusion 321. The return spring 340 is sleeved on the locking rod 320. The front end of the return spring 340 is connected to the fixing seat 310, and the rear end of the return spring 340 is connected to the front end of the protrusion 321. The return spring 340 is always in a compressed state. It can be understood that the return spring 340 always applies a backward force to the locking rod 320. When the locking pin 322 is in the second state and located in the first groove 211, the return spring 340 can push the locking rod 320 backward, causing the locking pin 322 to closely contact the bottom of the first groove 211, thereby preventing the locking pin 322 from rotating to the first state due to interference from external factors and independently passing through the first elongated through-hole 212 and disengaging from the first groove 211. When the locking pin 322 is in the first state and located in the first groove 211 , under the action of the return spring 340 , the locking pin 322 can move backward and disengage from the first groove 211 through the first elongated through hole 212 without manually pushing the locking rod 320 backward.

[0053] Preferably, refer to Figures 6 to 11When the locking mechanism 300 includes both the handle 330 and the return spring 340, the locking rod 320 is inserted into the fixing seat 310, and the return spring 340 is then sleeved on the locking rod 320. The front end of the return spring 340 is inserted into and connected to the fixing seat 310, and the rear end of the return spring 340 is connected to the front end of the protrusion 321. The handle 330 is then sleeved and threadedly connected to the fixing seat 310. It should be noted that the handle 330 and the return spring 340 can be installed separately, or simultaneously, or neither can be installed on the locking mechanism 300.

[0054] According to some embodiments of the present invention, referring to Figures 6 to 11 The locking mechanism 300 further includes a backing plate 350, which is located behind the screen body 100. The fixing seat 310 is located behind the backing plate 350. The backing plate 350 is fixedly connected to the screen body 100 and the fixing seat 310, respectively. The backing plate 350 is provided with a receiving hole 351. It is understood that when the locking pin 322 is located in the receiving hole 351, the front end of the fixing seat 310 can abut against the locking pin 322 to limit the rearward movement of the locking rod 320. The receiving hole 351 is used to accommodate the locking pin 322, preventing the locking pin 322 from colliding and interfering with the fixing seat 310 and being unable to completely leave the screen body 100.

[0055] Preferably, the receiving hole 351 is elongated and extends in the vertical direction, and is aligned with the first elongated through hole 212. When the locking pin 322 is in the first state and located in the receiving hole 351, the wall of the receiving hole 351 restricts the rotation of the locking rod 320. It is understood that the locking pin 322 can only enter the receiving hole 351 when it is in the first state. At this time, when the locking pin 322 needs to enter the first groove 211, it is only necessary to push the locking rod 320 forward, without having to rotate the locking rod 320 and manually align the locking pin 322 with the first elongated through hole 212, which saves time and effort.

[0056] According to some embodiments of the present invention, referring to Figure 5 、 Figures 7 to 11 The vertical rod 210 is fixedly installed with a buckle 220, and the buckle 220 is arranged in the first groove 211. The buckle 220 is provided with a second long through hole 221, and the second long through hole 221 is aligned with the first long through hole 212. The front end surface of the buckle 220 is provided with a second groove 222, and the second groove 222 extends in the left and right directions. When the locking pin 322 is in the second state and is located in the second groove 222, the locking pin 322 respectively abuts against the upper side wall and the lower side wall of the second groove 222.

[0057] When the base 200 and the screen body 100 need to be assembled together, the locking rod 320 is rotated to put the locking pin 322 in the first state. The locking pin 322 is now aligned with the first long through hole 212, pushing the locking rod 320 to move forward so that the locking pin 322 passes through the first long through hole 212 and enters the first groove 211, and moves to the front side of the buckle 220 through the second long through hole 221. The locking rod 320 is then rotated to put the locking pin 322 in the second state. The locking pin 322 moves backward again to reach the second groove 222. The upper and lower side walls of the second groove 222 are both in contact with the locking pin 322, so that the locking rod 320 cannot move in the up and down direction relative to the vertical rod 210, that is, the vertical rod 210 cannot move in the up and down direction, thereby completing the assembly of the base 200 and the screen body 100. Preferably, when a handle 330 is provided, rearward movement of the handle 330 can press the locking pin 322 into the second groove 222, preventing the locking pin 322 from disengaging from the second groove 222, thereby enhancing the stability of the connection between the vertical rod 210 and the locking pin 322. Preferably, when a return spring 340 is provided, after the locking pin 322 moves to the front side of the buckle 220 and rotates to the second state, the return spring 340 can cause the locking pin 322 to move rearward into the second groove 222, eliminating the need for manual pulling of the locking rod 320.

[0058] When the base 200 and the screen body 100 need to be disassembled from each other, the locking rod 320 is pushed forward so that the locking pin 322 disengages from the second groove 222, and then the locking rod 320 is rotated so that the locking pin 322 is in the first state, so that the locking pin 322 aligns with the second long through hole 221 and the first long through hole 212, and the locking rod 320 is driven to move backward so that the locking pin 322 passes through the second long through hole 221 and the first long through hole 212 and disengages from the first groove 211. At this time, the vertical rod 210 can move downward to disengage from the countersunk hole 110, thereby completing the mutual disassembly of the base 200 and the screen body 100.

[0059] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 A roller assembly 130 is provided at the lower end of the base 200 to facilitate moving the base 200 and save physical effort.

[0060] According to some embodiments of the present invention, referring to Figure 2 and Figure 4 There are multiple vertical rods 210, multiple countersunk holes 110, and multiple locking mechanisms 300, with a one-to-one correspondence between the multiple vertical rods 210, the multiple countersunk holes 110, and the multiple locking mechanisms 300. In this embodiment, there are two vertical rods 210, two countersunk holes 110, and two locking mechanisms 300, thereby enhancing the connection stability between the base 200 and the screen body 100.

[0061] Throughout this specification, references to the term "some embodiments" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0062] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A LED poster screen that can be quickly disassembled and assembled, characterized in that: include: A screen body (100) is provided with a countersunk hole (110) on its lower end surface, and a through hole (120) communicating with the countersunk hole (110) is provided on one side of the screen body (100); The base (200) is provided with a vertical rod (210), the vertical rod (210) can be inserted into the countersunk hole (110), the side wall of the vertical rod (210) is provided with a first groove (211), and the bottom of the first groove (211) is provided with a first long through hole (212); The locking mechanism (300) comprises a fixing seat (310) and a locking rod (320), wherein the fixing seat (310) is fixedly mounted on the screen body (100), and the locking rod (320) is slidably connected to the fixing seat (310) in a front-to-back direction, and a locking pin (322) extending in a radial direction is provided at the front end of the locking rod (320), and the locking pin (322) can enter or leave the counterbore (110) through the through hole (120); The locking rod (320) can rotate around its own axis to switch the locking pin (322) between a first state and a second state, wherein: when the locking pin (322) is in the first state, the locking rod (320) moves forward to allow the locking pin (322) to pass through the first long through hole (212) and move into the first groove (211) or move backward to escape from the first groove (211); when the locking pin (322) is in the second state, the vertical rod (210) can prevent the locking pin (322) from reciprocating between the front and rear sides of the first long through hole (212); When the locking pin (322) is in the second state and is located in the first groove (211), the locking pin (322) can abut against the groove wall of the first groove (211) to limit the vertical rod (210) from moving in the up and down directions.

2. The quickly detachable LED poster screen according to claim 1, characterized in that: The locking mechanism (300) further comprises a handle (330), the fixing seat (310) is provided with an external thread (311), the handle (330) is provided with an internal thread (331), the handle (330) is threadedly connected to the fixing seat (310), the handle (330) can be rotated relative to the fixing seat (310) so that the handle (330) moves in the front-rear direction, and the locking rod (320) is provided with a convex portion (321); when the locking pin (322) is in the second state and is located in the first groove (211), the handle (330) can move backward and abut against the convex portion (321) and apply a backward force to the locking rod (320), so that the locking pin (322) applies a backward force to the groove bottom of the first groove (211).

3. The quickly detachable LED poster screen according to claim 1, characterized in that: The locking mechanism (300) further includes a return spring (340), the locking rod (320) is provided with a convex portion (321), the return spring (340) is sleeved on the locking rod (320), the front end of the return spring (340) is connected to the fixing seat (310), and the rear end of the return spring (340) is connected to the front end of the convex portion (321), and the return spring (340) is always in a compressed state.

4. The quickly detachable LED poster screen according to claim 1, characterized in that: The locking mechanism (300) further includes a backing plate (350), the backing plate (350) being located behind the screen body (100), the fixing seat (310) being located behind the backing plate (350), the backing plate (350) being fixedly connected to the screen body (100) and the fixing seat (310) respectively, and the backing plate (350) being provided with a receiving hole (351); when the locking pin (322) is located in the receiving hole (351), the front end of the fixing seat (310) can abut against the locking pin (322) to limit the backward movement of the locking rod (320).

5. The quickly detachable LED poster screen according to claim 4, characterized in that: The accommodating hole (351) is in an elongated shape and is aligned with the first elongated through hole (212); when the locking pin (322) is in a first state and located in the accommodating hole (351), the hole wall of the accommodating hole (351) restricts the rotation of the locking rod (320).

6. The quickly detachable LED poster screen according to any one of claims 1 to 3, characterized in that: The vertical rod (210) is fixedly mounted with a buckle (220), the buckle (220) is arranged in the first groove (211), the buckle (220) is provided with a second long through hole (221), the second long through hole (221) is aligned with the first long through hole (212), the front end surface of the buckle (220) is provided with a second groove (222), and when the locking pin (322) is in the second state and is located in the second groove (222), the locking pin (322) is respectively in contact with the upper side wall and the lower side wall of the second groove (222).

7. The quickly detachable LED poster screen according to claim 6, characterized in that: The second groove (222) extends in a horizontal direction, and the second elongated through hole (221) extends in a vertical direction.

8. The quickly detachable LED poster screen according to claim 1, characterized in that: A rotating portion (323) is fixedly provided at the rear end of the locking rod (320).

9. The quickly detachable LED poster screen according to claim 1, characterized in that: A roller assembly (130) is provided at the lower end of the base (200).

10. The quickly detachable LED poster screen according to claim 1, characterized in that: There are multiple vertical rods (210), multiple countersunk holes (110), and multiple locking mechanisms (300), and the multiple vertical rods (210), the multiple countersunk holes (110), and the multiple locking mechanisms (300) correspond one to one.

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