CN112419914A

CN112419914A - Combined LED display screen

Info

Publication number: CN112419914A
Application number: CN202011368963.9A
Authority: CN
Inventors: 汪艳林
Original assignee: Anhui Mingyang Electronics Co ltd
Current assignee: Anhui Mingyang Electronics Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-02-26

Abstract

The invention discloses a combined LED display screen, which comprises a shell for wrapping LED display modules and an auxiliary assembling disc for assembling a plurality of LED display modules, wherein the edge part of the shell is provided with a clamping part, when the plurality of LED display modules are assembled, the clamping parts on the adjacent shells are mutually butted and then connected through bolts, so that the plurality of LED display modules are assembled together, the auxiliary assembling disc comprises a base, an assembling channel is arranged on the base, the LED display modules are assembled and disassembled in the assembling channel, the height and the width of the assembling channel are equal to those of the shell, so as to limit the position of the shell, so that the clamping parts can be quickly and accurately butted, the assembling efficiency of the LED display modules is improved, the side part of the assembling channel is provided with an auxiliary driving component, the shell can be driven to move in the assembling channel through the auxiliary driving component, and the force application size and the direction of the LED display modules in the assembling and disassembling process are stable, the stability of LED display module assembly and disassembly processes is improved.

Description

Combined LED display screen

Technical Field

The invention relates to the technical field of LED display, in particular to a combined LED display screen.

Background

The LED is praised as a green light-emitting product in the 21 st century, has the characteristics of long service life, energy conservation, environmental protection and the like, and the application of the LED display screen technology is rapidly developed along with the rapid development of the cultural industry. At present, LED display screens in the market are formed by arranging and assembling a plurality of LED display modules, generally, the LED display modules are firstly assembled in an occluded mode, and then the display modules are assembled and fixed through parts such as screws or connecting sheets. However, the LED display screen with the structure is inconvenient to assemble and is mainly reflected in the following two aspects:

first, when the display module is engaged, the display module needs to be held by hand to ensure the accuracy of the display module, which makes it difficult to achieve the purpose of engagement accurately.

Secondly, due to the combined structure, it is difficult to grasp and control the flatness of the surface of the LED display screen in actual operation, so that a lot of time and effort are required to adjust the flatness of the surface of the combined display screen to meet the requirement of playing effect.

Disclosure of Invention

The invention aims to provide a combined LED display screen to solve the technical problem that the surface flatness of a combined structure in the prior art is difficult to control.

In order to solve the technical problems, the invention specifically provides the following technical scheme:

the utility model provides a modular LED display screen, is in including a plurality of by shell and parcel LED display unit that LED display module in the shell is constituteed the marginal fixed mounting of shell has a plurality of joint parts, LED display unit below is provided with supplementary concatenation dish, and is a plurality of LED display unit combines through supplementary concatenation dish and forms the integral structure, every LED display unit bottom equal fixed mounting has the alignment rod that is used for the calibration roughness, fixed mounting has and is used for the adjustment in the supplementary concatenation dish the alignment mechanism of alignment rod support length.

As a preferable scheme of the present invention, the calibration mechanism includes an extension arm fixedly installed at the bottom of the auxiliary assembly tray for lifting the lifting calibration rod, and a wide area lifting plate embedded with the lifting calibration rod is provided at the top of each extension arm, the extension arm is composed of two mutually hinged connection rods, and the other ends of the two connection rods are respectively hinged to the auxiliary assembly tray and the wide area lifting plate.

As a preferable scheme of the present invention, a linear laser is fixedly mounted on any one of the wide area lifting plates, a prism is disposed at an outlet of the linear laser, aligners are fixedly mounted on the other wide area lifting plates, and a calibration scale is disposed on each of the lifting calibration rods from top to bottom.

As a preferable scheme of the present invention, the housing is rectangular, the engaging member includes an engaging plate disposed on a left side surface of the housing and an engaging groove disposed on a right side surface of the housing, the engaging plate and the engaging groove are provided with corresponding screw connecting holes, and a bolt supporting member is disposed in the screw connecting hole on the engaging groove.

As a preferable scheme of the present invention, the bolt support assembly includes a support hole disposed at an outer periphery of an upper half portion of the threaded connection hole, a lower support ring is disposed in the support hole, a support spring is connected to an upper end of the lower support ring, an upper support ring is connected to an upper end of the support spring, and an anti-drop ring is connected to an upper end of the upper support ring.

As a preferable aspect of the present invention, the outer diameter of the lower support ring is equal to the inner diameter of the support hole, the inner diameter of the support hole is larger than the inner diameter of the threaded connection hole, the support spring and the lower support ring are coaxially disposed, the upper support ring and the lower support ring are identical in structure and symmetrically disposed at two ends of the support spring, and the outer diameter of the anti-falling ring is larger than the outer diameter of the upper support ring.

As a preferred scheme of the invention, the auxiliary driving assembly comprises a disassembly and assembly seam arranged on the side surface of the assembly channel, the disassembly and assembly seam is parallel to the assembly channel, a disassembly and assembly slider is arranged in the disassembly and assembly seam in a sliding manner, a calibration cylinder horizontally penetrates through the disassembly and assembly slider and is perpendicular to the side wall of the assembly channel, a calibration rod penetrates through the calibration cylinder, an anti-falling ring is arranged at the end part of the outer end of the calibration cylinder, the outer end of the calibration rod is axially connected with a push rod, the push rod penetrates through the anti-falling ring, the diameter of the push rod is equal to the inner diameter of the anti-falling ring, and the tail end of the push rod is connected with a hand-operated wheel;

and the front side surface and the rear side surface of the shell are provided with calibration holes, and the calibration holes correspond to the calibration rod in size.

As a preferable scheme of the invention, the push rod is coaxially provided with a driving gear, the bottom of the dismounting seam is provided with a driving rack, and the driving gear is meshed with the driving rack.

As a preferable scheme of the invention, the assembling channel comprises a channel body arranged at the front side and the rear side of the base

A shaped side plate, two of

The horizontal ends of the side plates are oppositely arranged and do not contact with each other

The two side plates are oppositely arranged

And splicing areas are formed between the side plates.

Compared with the prior art, the invention has the following beneficial effects:

according to the LED display screen, the clamping parts are arranged on the shell, so that the LED display units which are adjacent and need to be spliced have the common connecting parts, the clamping parts are used, the LED display units can be directly connected through clamping to form the complete LED display screen, the operations such as independent alignment and the like are not needed, the flatness of the surface is adjusted through the calibration rod in the combination process, and the integral combination effect is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a combined LED display screen according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a clip component in an embodiment of the present invention

FIG. 3 is a schematic structural diagram of a bolt support assembly according to an embodiment of the present invention

FIG. 4 is a schematic diagram of a side view structure of a spliced channel according to an embodiment of the present invention

FIG. 5 is a schematic structural diagram of an auxiliary driving assembly according to an embodiment of the present invention

FIG. 6 is a schematic top view of the dismounting seam according to the embodiment of the present invention.

The reference numerals in the drawings denote the following, respectively:

1. a housing; 2. an auxiliary assembly tray; 3. a clip member; 4. an LED display unit; 5. lifting the calibration rod; 6-calibrating the hole; 7. a calibration mechanism;

21. a base; 22. assembling a channel; 23. an auxiliary drive assembly;

221、

a shaped side plate; 222. splicing areas;

231. assembling and disassembling the seam; 232. disassembling and assembling the sliding block; 233. a calibration cylinder; 234. a calibration rod; 235. the anti-drop ring; 236. a push rod; 237. a hand-operated wheel; 238. a drive gear; 239. a drive rack;

31. a clamping and connecting plate; 32. a clamping groove; 33. connecting a threaded hole; 34. a bolt support assembly;

341. a support hole; 342. a lower support ring; 343. a support spring; 344. an upper support ring; 345. preventing a ring from falling;

701-extending arm; 702-wide area lift pad; 703-aligner.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 6, the invention provides a combined LED display screen, which includes a plurality of LED display units 4 composed of a housing 1 and an LED display module wrapped in the housing 1, wherein a plurality of clamping components 3 are fixedly mounted at the edge of the housing 1, an auxiliary assembling disc 2 is arranged below the LED display units 4, the plurality of LED display units 4 are combined to form an integrated structure through the auxiliary assembling disc 2, a lifting calibration rod 5 for calibrating flatness is fixedly mounted at the bottom of each LED display unit 4, and a calibration mechanism 7 for adjusting the support length of the lifting calibration rod 5 is fixedly mounted in the auxiliary assembling disc 2.

Due to the combined structure, for each individual LED display unit 4, due to its own properties or factors during the assembly process, the surface unevenness is very likely to occur after the assembly, and since the conventional combined screen is only fixed and limited at the outermost edge, it is difficult to adjust the local flatness thereof. The invention realizes the local adjustment by arranging the lifting calibration rod 5 and the calibration mechanism 7.

The calibration mechanism 7 includes fixed mounting and is in be used for lifting the extension arm 701 of lift alignment pole 5 is used for the supplementary 2 bottoms of amalgamation dish, just extension arm 701 top all be provided with lift alignment pole 5 gomphosis's wide area lift board 702, extension arm 701 comprises two articulated connecting rods each other, and two the other end of connecting rod respectively with supplementary amalgamation dish 2 and wide area lift board 702 are articulated.

And a linear laser is fixedly mounted on any one of the wide area lifting plates 702, a prism is arranged at an outlet of the linear laser, an aligner 703 is fixedly mounted on the other wide area lifting plate 702, and calibration scales are arranged from top to bottom on each lifting calibration rod 5.

In combination with the above technical features, in the present invention, a unified calibration platform is established by the calibration mechanism 7, that is, the calibration platform is established manually, and then the height of the lifting calibration rod 5 is adjusted to adjust the height thereof, so as to adjust the local flatness thereof. In the embodiment, the local adjustment is based by establishing the calibration platform, so that one-time quick calibration or pre-calibration can be realized, namely, the support height is set in advance according to the calibration of the calibration platform, and the phenomenon of unevenness in the assembling process can be prevented. At present, LED display screens in the market are formed by arranging and assembling a plurality of LED display modules, the LED display modules are usually firstly engaged and assembled, and then parts such as screws or connecting sheets are adopted to assemble and fix the unit display modules. When the occlusion of the display module is carried out, a handheld occlusion mode is often adopted, great energy is needed to achieve accurate occlusion, and the efficiency is not high. This embodiment is through setting up supplementary concatenation dish 2, supplementary concatenation dish 2 includes base 21, be provided with on the base 21 and assemble passageway 22, the LED display module is in accomplish the dismouting in assembling passageway 22, assemble passageway 22 high and width with shell 1's height and width equal, can right the position of shell 1, highly restrict, make the LED display module correspond, need not to aim at this process, and two LED display modules are close to each other and can accomplish the process that the interlock was assembled, promote the efficiency that the LED display module was assembled.

Specifically, in this embodiment the shell 1 is the cuboid form, joint part 3 is including setting up the joint board 31 and the setting of the left surface of shell 1 are in the joint groove 32 of the 1 right flank of shell, when carrying out LED display module assembly and assembling, in the joint board 31 correspondence on one of them LED display module inserted the joint groove 32 on another LED display module to accomplish the interlock. The joint board 31 with be provided with threaded connection hole 33 on the joint groove 32, threaded connection hole 33 that has the same quantity on joint board 31 and the joint groove 32, and when joint board 31 inserted in joint groove 32, on the joint board 31 with joint groove 32 on corresponding threaded connection hole 33 be located same straight line, after connecting the bolt in threaded connection hole 33, accomplish LED display module's the fixing of assembling promptly.

Furthermore, during the process of mounting and dismounting, a plurality of screws need to be screwed, during the process of mounting the screws, the screws need to be aligned with the threaded holes, the front ends of the screws are inserted into the threaded holes, during the process, the screws need to be held, then the screws need to be screwed, during the process of dismounting the screws, the screws need to be manually picked up from the threaded holes after the screws are unscrewed, the picking speed is high, otherwise the screws incline or slide down along the screw holes, so that the existing screw dismounting process has some inconvenience, in order to solve the above disadvantages, the embodiment arranges a bolt supporting component 34 in the threaded connecting holes 33 on the clamping grooves 32, the bolt supporting component 34 can provide a guiding effect during the mounting process of the bolts, facilitate the bolts to be accurately inserted into the threaded connecting holes 33, and simultaneously provide a supporting effect for the dismounting process of the bolts, and during the screwing-out process of the bolts, it provides ascending holding power for the bolt all the time, avoids the bolt to topple over, lifts the bolt after stopping to twist the bolt simultaneously, puts up in threaded connection hole 33's top to take out of bolt is convenient for.

Specifically, in the present embodiment, the bolt support assembly 34 includes a support hole 341 disposed on the outer periphery of the upper half portion of the threaded connection hole 33, a lower support ring 342 is disposed in the support hole 341, a support spring 343 is connected to the upper end of the lower support ring 342, an upper support ring 344 is connected to the upper end of the support spring 343, a drop-preventing ring 345 is connected to the upper end of the upper support ring 344, the outer diameter of the lower support ring 342 is equal to the inner diameter of the support hole 341, the inner diameter of the support hole 341 is greater than the inner diameter of the threaded connection hole 33, the support spring 343 is disposed coaxially with the lower support ring 342, the upper support ring 344 and the lower support ring 342 are identical in structure and symmetrically disposed at the two ends of the support spring 343, and the outer diameter of the drop-preventing ring 345 is greater than the outer diameter of the.

Furthermore, the conventional fixing method of the mounting plate usually needs to knock the mounting plate away from the unit display module by means of knocking with an auxiliary tool after the screw is unscrewed, so that the unit display module is usually in an occluded state with the mounting plate, the mounting and dismounting are time-consuming and troublesome, inconvenience is brought to mounting and maintenance personnel, the mounting and maintenance efficiency is affected, meanwhile, the display module is possibly damaged by knocking with an auxiliary tool, in order to solve the above disadvantages, the present embodiment is provided with an auxiliary driving assembly 23 at the side of the assembling channel 22, the shell 1 can be driven to move in the splicing channel 22 through the auxiliary driving component 23, the force direction that this mechanical structure exported is fixed, and the size then easily controls, can promote the stability of LED display module assembly disassembly and assembly process for making the stable application of force of size and direction of providing among the LED display module assembly disassembly and assembly process.

Specifically, the auxiliary driving assembly 23 includes a disassembly and assembly slit 231 provided on a side surface of the assembly passage 22, the assembling and disassembling slit 231 is parallel to the assembling channel 22, an assembling and disassembling slide block 232 is arranged in the assembling and disassembling slit 231 in a sliding way, a calibration cylinder 233 horizontally penetrates through the disassembling and assembling slide block 232, the calibration cylinder 233 is vertical to the side wall of the assembling channel 22, a calibration rod 234 is arranged in the calibration cylinder 233 in a penetrating way, the outer end part of the calibration cylinder 233 is provided with a shedding prevention ring 235, a push rod 236 is axially connected to the outer end of the calibration rod 234, the push rod 236 passes through the anti-slip ring 235, the diameter of the push rod 236 is equal to the inner diameter of the anti-drop ring 235, the end of the push rod 236 is connected with a hand wheel 237, a driving gear 238 is coaxially arranged on the pushing rod 236, a driving rack 239 is arranged at the bottom of the dismounting and mounting slot 231, and the driving gear 238 is meshed with the driving rack 239;

the front side surface and the rear side surface of the shell 1 are provided with calibration holes 6, and the calibration holes 6 correspond to the calibration rods 234 in size.

In the assembling and combining process of the LED display modules, two LED display modules are firstly inserted from two ends of the assembling channel 22 respectively, and the two LED display modules are pushed to approach each other. In the present embodiment, the length of the base 21 is greater than the length of the assembly passage 22. Taking the LED display module inserted into the assembling channel 22 from the left end as an example, when the LED display module is placed on the base 21 at the beginning, the left end is suspended, and the right end is not assembled in the assembling channel 22, the right end slowly enters the assembling channel 22 along with pushing the LED display module, and after the left end of the LED display module is flush with the left end of the base 21 (agreeing to the vertical surface), the LED display module stops being pushed, and the push rod 236 is pushed inward, so that the calibration rod 234 moves inward, at this time, the calibration rod 234 just aligns with the calibration hole 6, the calibration rod 234 is inserted into the calibration hole 6, and then the hand wheel 237 is rotated, so that the push rod 236, the calibration rod 234 and the drive gear 238 rotate, and the disassembling slide block 232 and the LED display module move inward by utilizing the meshing transmission relationship between the drive gear 238 and the drive rack 239.

Two assembling and disassembling seams 231 are arranged on one side face of the assembling channel 22, the two assembling and disassembling seams 231 correspond to the two LED display modules respectively, the left assembling and disassembling seam 231 controls the left LED display module to move, the right assembling and disassembling seam 231 controls the right LED display module to move, and when the left assembling and disassembling slide block 232 moves to the rightmost end of the left assembling and disassembling seam 231 and the right assembling and disassembling slide block 232 moves to the leftmost end of the right assembling and disassembling seam 231, the two LED display modules are assembled and meshed.

Similarly, when the LED display modules need to be combined and separated, the LED display modules are also combined and placed on the base 21, a segment of the LED display modules is manually pushed to be inserted into the assembly channel 22, after the end of the LED display module is flush with the edge of the base 21, the hand wheel 237 is rotated, the position of the calibration rod 234 is changed until the calibration rod 234 is aligned with the calibration hole 6, then the push rod 236 is pushed inwards to move the calibration rod 234 inwards, the calibration rod 234 is inserted into the calibration hole 6, the auxiliary driving assembly 23 is connected with the LED display module combination, the position of the LED display module combination is moved by rotating the hand wheel 237, so that the calibration holes 6 of the connected LED display modules in the LED display module combination are all moved into the assembly channel 22 and exposed in the assembly and disassembly seam 231, and then the other calibration rod 234 is aligned with the other calibration hole 6 by rotating the other hand wheel 237, so that the LED display module is also connected to the output end of the auxiliary driving assembly 23, and then the two hand-operated wheels 237 are rotated in opposite rotation directions to move the two LED display modules back to back, thereby separating the two LED display modules.

It should be noted that, in the present embodiment, the assembling passage 22 includes two passages disposed at the front and rear sides of the base 21

A side plate 221, two of said

The horizontal ends of the side plates 221 are oppositely arranged and do not contact, two

The area between the side plates 221 is shaped as a split area 222 to facilitate the removal and installation of the bolts.

According to the invention, the auxiliary assembling disc 2 is arranged, the auxiliary assembling disc 2 comprises the assembling channel 22, the LED display module is assembled and disassembled in the assembling channel 22, the height and the width of the assembling channel 22 are equal to those of the shell 1, the position and the height of the shell 1 can be limited, the LED display module is assembled without aligning the process, the two LED display modules approach each other to complete the process of meshing and assembling, and the assembling efficiency of the LED display module is improved;

by arranging the bolt supporting assembly 34, the bolt supporting assembly 34 can provide a guiding effect for the bolt installation process, so that the bolt can be conveniently and accurately inserted into the threaded connecting hole 33, and can provide a supporting effect for the bolt disassembly process, and in the bolt screwing-out process, the bolt supporting assembly always provides upward supporting force for the bolt, so that the bolt is prevented from tilting, and meanwhile, the bolt is lifted after the bolt is stopped to be screwed and is erected above the threaded connecting hole 33, so that the bolt can be conveniently taken out;

through setting up auxiliary drive assembly 23, lead to auxiliary drive assembly 23 can drive shell 1 is in it removes to assemble the passageway 22, owing to adopt the power of mechanical structure output to carry out the dismouting to LED display module assembly, its direction of output force is fixed, and the size is then easily controlled, can provide the application of force that size and direction are stable for making LED display module assembly disassembly and assembly in-process to promote the stability of LED display module assembly disassembly and assembly process.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.

Claims

1. The utility model provides a modular LED display screen, its characterized in that is in including a plurality of by shell (1) and parcel LED display unit (4) that LED display module in shell (1) is constituteed shell (1) edge fixed mounting has a plurality of joint parts (3), LED display unit (4) below is provided with supplementary concatenation dish (2), and is a plurality of LED display unit (4) form integrated structure through supplementary concatenation dish (2) combination, at every LED display unit (4) bottom equal fixed mounting has lift alignment rod (5) that are used for the calibration roughness, supplementary concatenation dish (2) internal fixation installs and is used for the adjustment lift alignment rod (5) support the alignment mechanism (7) of length.

2. The combined LED display screen of claim 1, wherein: calibration mechanism (7) are including fixed mounting supplementary amalgamation dish (2) bottom is used for lifting the extension arm (701) of lift alignment pole (5), just extension arm (701) top all be provided with wide area lifting plate (702) of lift alignment pole (5) gomphosis, extension arm (701) comprise two mutual articulated connecting rods, and two the other end of connecting rod respectively with supplementary amalgamation dish (2) and wide area lifting plate (702) are articulated.

3. The combined LED display screen of claim 1, wherein: be located wherein any one fixed mounting has a linear laser instrument on wide area lifting plate (702), just the exit of linear laser instrument is provided with the prism, other equal fixed mounting has aligner (703) on wide area lifting plate (702), every be provided with the calibration scale by top to bottom on lift alignment pole (5).

4. The combined LED display screen of claim 1, wherein: shell (1) is the cuboid form, joint part (3) are including setting up joint board (31) and the setting of the left surface of shell (1) are in the joint groove (32) of shell (1) right flank, joint board (31) with be provided with corresponding threaded connection hole (33) on joint groove (32), be located be provided with bolt supporting component (34) in threaded connection hole (33) on joint groove (32).

5. The combined LED display screen of claim 4, wherein: the bolt supporting assembly (34) comprises a supporting hole (341) arranged on the periphery of the upper half part of the threaded connecting hole (33), a lower supporting ring (342) is arranged in the supporting hole (341), the upper end of the lower supporting ring (342) is connected with a supporting spring (343), the upper end of the supporting spring (343) is connected with an upper supporting ring (344), and the upper end of the upper supporting ring (344) is connected with an anti-falling ring (345).

6. The combined LED display screen of claim 5, wherein: the outer diameter of the lower support ring (342) is equal to the inner diameter of the support hole (341), the inner diameter of the support hole (341) is larger than the inner diameter of the threaded connection hole (33), the support spring (343) and the lower support ring (342) are coaxially arranged, the upper support ring (344) and the lower support ring (342) are identical in structure and symmetrically arranged at two ends of the support spring (343), and the outer diameter of the anti-falling ring (345) is larger than the outer diameter of the upper support ring (344).

7. The combined LED display screen of claim 1, wherein: the auxiliary driving component (23) comprises a dismounting seam (231) arranged on the side surface of the splicing channel (22), the disassembly and assembly slit (231) is parallel to the assembly channel (22), a disassembly and assembly slide block (232) is arranged in the disassembly and assembly slit (231) in a sliding way, a calibration cylinder (233) horizontally penetrates through the disassembly and assembly slide block (232), the calibration cylinder (233) is vertical to the side wall of the assembly channel (22), a calibration rod (234) penetrates through the calibration cylinder (233), an anti-drop ring (235) is arranged at the end part of the outer end of the calibration cylinder (233), a push rod (236) is axially connected to the outer end of the calibration rod (234), the push rod (236) penetrates through the anti-falling ring (235), the diameter of the push rod (236) is equal to the inner diameter of the anti-falling ring (235), and the tail end of the push rod (236) is connected with a hand-operated wheel (237);

the front side face and the rear side face of the shell (1) are provided with calibration holes (6), and the calibration holes (6) correspond to the calibration rods (234) in size.

8. The combined LED display screen of claim 7, wherein: the push rod (236) is coaxially provided with a driving gear (238), the bottom of the dismounting seam (231) is provided with a driving rack (239), and the driving gear (238) is meshed with the driving rack (239).

9. The combined LED display screen of claim 8, wherein: the assembly channel (22) comprises a base (21) arranged at the front side and the rear side

A shaped side plate (221), two of said

The horizontal ends of the side plates (221) are arranged oppositely and do not contact with each other

The side plates (221) are oppositely arranged and are arranged at two sides

Splicing areas (222) are formed between the side plates (221).