LED curved screen with radian convenient to adjust

Abstract

The utility model discloses an LED curved screen convenient to adjust radian, which comprises an LED curved screen template and an angle adjusting mechanism connected to the back side of the LED curved screen template, the angle adjusting mechanism comprises connecting pieces, a telescopic piece and an adjusting piece, the two ends of the telescopic piece are respectively connected with one connecting piece in a rotating mode, and the adjusting piece is connected with the telescopic piece in a rotating mode. The connecting piece is fixedly connected with the LED curved screen template, the adjusting piece is connected with the telescopic piece, the adjusting piece is used for adjusting the telescopic length of the telescopic piece, and the telescopic piece is used for driving the LED curved screen template to bend when stretching out and drawing back. According to the utility model, the angle adjusting mechanism is arranged on the back side of the LED curved screen template, and the adjusting piece in the angle adjusting mechanism is rotated to drive the telescopic piece to stretch out and draw back, so that when the telescopic piece stretches out, the LED curved screen template is driven to bend inwards to form a concave curved screen, and when the telescopic piece retracts, the LED curved screen template is driven to bend outwards to form a convex curved screen; the radian of the curved screen is easy to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display screens, in particular to an LED curved screen which is convenient to adjust the radian. Background Technique

[0002] The existing curved LED display screen is a display device with a radian, which improves the sense of broadness in the user's visual experience. The curved display screen gives a wider field of view because the edges slightly bent towards the user can be closer to the user, achieving a viewing angle basically the same as that at the central position of the screen. At the same time, the curved screen can provide a better movie-watching experience. In recent years, with the rapid development of LED display technology, LED display screens have been widely used in public places such as large exhibition halls, outdoor advertisements, stadiums, airport halls, government service halls, stations, temporary stages, and exhibitions.

[0003] For the current LED curved screen, each LED display unit board is respectively fixed on a frame, the adjacent frames are connected by a hinge device (radian lock), and then these LED unit boards are connected by wires, and the power supply and control system are connected to form a bendable LED display screen. When in use, the curvature of the curved surface of the display screen is constant, which is not convenient for the staff to adjust the degree of curvature of the curved surface of the display screen. Content of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an LED curved screen which is convenient to adjust the radian, so as to solve the problem that the degree of curvature of the LED curved screen cannot be adjusted in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] The LED curved screen which is convenient to adjust the radian includes an LED curved screen template and an angle adjustment mechanism connected to the back side of the LED curved screen template. The angle adjustment mechanism includes a connecting piece, a telescopic piece, and an adjusting piece. Both ends of the telescopic piece are respectively rotatably connected with a connecting piece. The connecting piece is fixedly connected with the LED curved screen template. The adjusting piece is connected with the telescopic piece. The adjusting piece is used to adjust the telescopic length of the telescopic piece. When the telescopic piece expands and contracts, it is used to drive the LED curved screen template to bend.

[0007] As a further improvement of the above technical solution, a telescopic piece is respectively connected between the upper ends and between the lower ends of the two connecting pieces, and the adjusting piece is connected between the two telescopic pieces.

[0008] As a further improvement of the above technical solution, the telescopic member includes a sliding block and a sleeve block having a sliding cavity. The sliding block is slidably connected to the sliding cavity. One end of the sliding block away from the sleeve block and one end of the sleeve block away from the sliding block are respectively rotatably connected to the two connecting members through an arc-shaped connecting block.

[0009] As a further improvement of the above technical solution, an observation window is provided on the sleeve block, and a radian scale line is provided on the sliding block. When the sliding block slides in the sleeve block, the radian scale line passes below the observation window.

[0010] As a further improvement of the above technical solution, the adjusting member includes a housing and transmission structures provided at both ends of the housing. The housing is rotatably connected between the two sleeve blocks. The transmission structure is connected between the housing and the sliding block. When the housing rotates, the sliding block is driven to move in the sliding cavity through the transmission structure.

[0011] As a further improvement of the above technical solution, the transmission structure includes a mounting block, a gear provided on the mounting block, and a rack provided on the sliding block. The mounting block is fixedly connected to the housing, and one end of the mounting block away from the housing penetrates through the sleeve block and extends into the sliding cavity. The gear is provided at the end of the mounting block located in the sliding cavity. An avoidance groove is provided on the sliding block, and the rack is provided on the side wall of the avoidance groove. The gear is located in the avoidance groove and meshes with the rack.

[0012] As a further improvement of the above technical solution, a fixing block is provided on the mounting block. An avoidance hole communicating with the sliding cavity is provided on the fixing block. One end of the mounting block away from the housing passes through the avoidance hole and extends into the avoidance groove and is connected with the gear. An installation hole communicating with the avoidance hole is provided on the fixing block. A limiting rod is provided in the installation hole. An annular groove is provided on the mounting block. When the mounting block rotates with the housing, the limiting rod slides in the annular groove.

[0013] As a further improvement of the above technical solution, a first adjustment hole in an annular array is provided on the fixing block, and a locking bead is provided on the mounting block. The locking bead is used to be stuck into the first adjustment hole to fix the positions of the mounting block and the sleeve block.

[0014] As a further improvement of the above technical solution, a sliding groove is provided at the bottom of the avoidance groove where the sliding block is located, the end of the mounting block is slidably connected to the sliding groove, a plurality of second adjustment holes arranged along the length direction of the sliding block are provided at the bottom of the sliding groove, a clamping protrusion is provided at the end of the mounting block, the clamping protrusion is connected with an unlocking structure, and the unlocking structure is used to drive the clamping protrusion to be embedded into the second adjustment hole to fix the positions of the mounting block and the sliding block, or to drive the clamping protrusion to leave the second adjustment hole to unlock the mounting block and the sliding block.

[0015] As a further improvement of the above technical solution, the unlocking structure includes a connecting rod and a first spring. A sliding hole is provided on the mounting block, the connecting rod is slidably arranged in the sliding hole, and the clamping protrusion is arranged at the end of the connecting rod;

[0016] The housing includes a fixed housing and a movable housing. A guiding structure is connected between the fixed housing and the movable housing, and the guiding structure is used to guide the movable housing to move closer to or away from the fixed housing;

[0017] The mounting block is fixedly connected to the fixed housing. Two oppositely arranged guiding blocks are provided on the movable housing. Two opposite limiting planes are provided at the lower end of the connecting rod. The connecting rod is slidably connected between the sliding gaps of the two guiding blocks through the limiting planes. An inclined guiding surface is provided at the bottom of the guiding block. A guiding rod is connected to the bottom of the connecting rod. The first spring is used to provide an elastic force to make the connecting rod have a tendency to move towards the sleeve block.

[0018] The beneficial effects of the present utility model are as follows: An angle adjustment mechanism is provided on the back side of the LED curved screen template. By rotating the adjustment member in the angle adjustment mechanism, the telescopic member can be driven to expand and contract. Both ends of the telescopic member are rotationally connected to the LED curved screen template through connecting members. Therefore, when the telescopic member extends, the LED curved screen template is driven to bend inward to form an inwardly concave curved screen, and when the telescopic member contracts, the LED curved screen template is driven to bend outward to form an outwardly convex curved screen. The adjustment is simple. In addition, through the cooperation of structures such as the rack, gear, adjustment hole, and scale in the adjustment member in the present utility model, the radian of the curved screen can be accurately adjusted. Description of the Drawings

[0019] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0020] Figure 1 is an assembly schematic diagram of the LED display screen with adjustable radian in the embodiment of the present utility model;

[0021] Figure 2 is a structural disassembly diagram of the LED display screen with adjustable radian in the embodiment of the present utility model;

[0022] Figure 3 is the assembly schematic diagram of the angle adjustment mechanism in the embodiment of the present utility model;

[0023] Figure 4 is the structural exploded view of the angle adjustment mechanism in the embodiment of the present utility model;

[0024] Figure 5 is Figure 4 the partial enlarged view at position A in

[0025] Figure 6 is Figure 4 the partial enlarged view at position B in

[0026] Figure 7 is the front view of the structural explosion of the adjusting part in the embodiment of the present utility model;

[0027] Figure 8 is the axonometric view of the structural explosion of the adjusting part in the embodiment of the present utility model;

[0028] Figure 9 is the structural diagram of the movable housing in the embodiment of the present utility model;

[0029] Figure 10 is the cross-sectional view of the adjusting part in the embodiment of the present utility model;

[0030] Figure 11 is the front view of the angle adjustment mechanism in the embodiment of the present utility model;

[0031] Figure 12 is Figure 11 the cross-sectional view along A - A in

[0032] Figure 13 is Figure 12 the partial enlarged view at position C in

[0033] Reference numerals: 100, LED curved screen template; 200, box body; 300, central control box; 400, angle adjustment mechanism;

[0034] 410, connecting piece; 411, connecting block; 412, hinge seat;

[0035] 420, telescopic piece; 421, sleeve block; 4211, observation window; 4212, fixed block; 4213, avoidance hole; 4214, mounting hole; 4215, first adjustment hole; 422, sliding block; 4221, radian scale line; 4222, second adjustment hole; 4223, chute; 4224, avoidance groove; 4225, rack; 423, arc connecting block;

[0036] 430, Adjusting member; 431, Housing; 4311, Fixed housing; 4312, Movable housing; 432, Transmission structure; 4321, Mounting block; 4322, Gear; 4323, Locking bead; 43231, Bead body; 13212, Elastic member; 4324, Annular groove; 4325, Limiting rod; 4326, Clamping projection; 4327, Connecting rod; 43271, First connecting rod; 43272, Lug; 43273, Second connecting rod; 43274, Limiting plane; 4328, Guide rod; 4329, First spring; 434, Guide post; 435, Second spring; 436, Limiting bolt; 437, Guide block; 438, Guide sleeve; 439, Connecting pipe. Detailed implementation manners

[0037] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model. In addition, all connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the composition of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations. For example, fixed connection / fixed installation can be selected from screw connection, bolt connection, pin connection, key connection, bonding, mortise and tenon connection, welding, riveting, etc. according to needs. For example, detachable connection can be selected from screw connection, bolt connection, threaded connection, snap connection, mortise and tenon connection, magic tape connection, etc. according to needs. The various technical features in the creation of the present utility model can be combined with each other without conflicting with each other.

[0038] Referring to Figure 1 and Figure 2 , an embodiment of the present utility model provides an LED curved screen that is convenient to adjust the radian, including an LED curved screen template 100, a box body 200, a central control box 300 and an angle adjustment mechanism 400. Specifically, there are two LED curved screen templates 100 and they are connected in the vertical direction. The two LED curved screen templates 100 are installed on the box body 200. The central control box 300 is connected to the middle of the back side of the LED curved screen template 100. There are two angle adjustment mechanisms 400. The two angle adjustment mechanisms 400 are connected to the back side of the LED curved screen template 100 and are symmetrically arranged on both sides of the central control box 300. The radian bends on the left and right sides of the LED curved screen template 100 are respectively controlled by the two angle adjustment mechanisms 400.

[0039] Specifically, referring to Figure 3, the angle adjustment mechanism 400 includes a connecting member 410, a telescopic member 420, and an adjusting member 430. One connecting member 410 is rotatably connected to each end of the telescopic member 420. The two connecting members 410 are respectively fixedly connected to the box body 200 and the central control box 300. One telescopic member 420 is connected between the upper ends of the two connecting members 410 and between the lower ends respectively. The adjusting member 430 is connected between the two telescopic members 420, so that the angle adjustment mechanism 400 as a whole forms a structure in the shape of the Chinese character "ri". The adjusting member 430 is used to adjust the telescopic length of the telescopic member 420. When the telescopic member 420 expands and contracts, it is used to drive the LED curved screen template 100 to bend. Therefore, when the telescopic member 420 extends, it drives the LED curved screen template 100 to bend inward to form a concave curved screen, and when the telescopic member 420 contracts, it drives the LED curved screen template 100 to bend outward to form a convex curved screen.

[0040] Referring to Figure 4 and Figure 11 , the telescopic member 420 includes a sliding block 422 and a sleeve block 421 with a sliding cavity. The sliding cavity is arranged along the length direction of the sleeve block 421. The sliding block 422 is slidably connected to the sliding cavity, so as to realize the telescopic function. An arc-shaped connecting block 423 is provided at one end of the sliding block 422 away from the sleeve block 421 and at one end of the sleeve block 421 away from the sliding block 422. The two arc-shaped connecting blocks 423 are respectively rotatably connected to the two connecting members 410. Specifically, the connecting member 410 includes a connecting block 411 and hinge seats 412 arranged at both ends of the connecting block 411. A hinge hole is provided at the end of the arc-shaped connecting block 423, and the arc-shaped connecting block 423 is connected to the hinge seat 412 through a hinge shaft. Due to the arrangement of the arc-shaped connecting block 423 and its rotation with the connecting member 410, it can drive the LED curved screen template 100 to bend when the telescopic member 420 extends or contracts.

[0041] In some embodiments, referring to Figure 4 , an observation window 4211 is provided on the sleeve block 421, and a radian scale line 4221 is provided on the sliding block 422. When the sliding block 422 slides in the sleeve block 421, the radian scale line 4221 passes below the observation window 4211. In this way, according to the length of the telescopic member 420 extending or contracting, the radian of the bending of the LED curved screen template 100 is measured. Therefore, the radian scale line 4221 with specific radian values is engraved. When the telescopic member 420 expands and contracts, just look at the numbers on the radian scale line 4221 through the observation window 4211 to know the radian of the bending of the LED curved screen template 100.

[0042] In this embodiment, referring to Figure 4, the adjusting member 430 includes a housing 431 and transmission structures 432 disposed at both ends of the housing 431. The housing 431 is rotatably connected between the two sleeve blocks 421. The transmission structures 432 are connected between the housing 431 and the sliding block 422. When the housing 431 rotates, the sliding block 422 is driven to move in the sliding cavity through the transmission structures 432.

[0043] In a specific embodiment, referring to Figures 4 - 10 , Figure 13 , the transmission structure 432 includes a mounting block 4321, a gear 4322 disposed on the mounting block 4321, and a rack 4225 disposed on the sliding block 422. The mounting block 4321 is fixedly connected to the housing 431, and one end of the mounting block 4321 away from the housing 431 penetrates through the sleeve block 421 and extends into the sliding cavity. The gear 4322 is disposed at the end of the mounting block 4321 located in the sliding cavity. An avoidance groove 4224 is provided on the sliding block 422, and the rack 4225 is disposed on the side wall of the avoidance groove 4224. The gear 4322 is located in the avoidance groove 4224 and meshes with the rack 4225. Thus, when the housing 431 rotates, the mounting block 4321 and the gear 4322 are driven to rotate synchronously. When the gear 4322 rotates, the rack 4225 is driven to move, that is, the sliding block 422 is driven to slide in the sliding cavity, realizing the telescopic adjustment of the telescopic member 420.

[0044] Furthermore, a fixing block 4212 is provided on the mounting block 4321. An avoidance hole communicating with the sliding cavity is provided on the fixing block 4212. A cylindrical portion is provided at one end of the mounting block 4321 away from the housing 431. The cylindrical portion is rotatably connected to the avoidance hole 4213. The cylindrical portion passes through the avoidance hole 4213 and extends into the avoidance groove 4224. The gear 4322 is fixed to the end of the cylindrical portion away from the housing 431. Through the above settings, the stable rotation of the mounting block 4321 and the housing 431 is realized.

[0045] In addition, a mounting hole 4214 communicating with the avoidance hole 4213 is provided on the fixing block 4212. A limiting rod 4325 is provided in the mounting hole 4214. One end of the limiting rod 4325 is connected to a side wall of the sleeve block 421, and this side wall can be detachably connected to the main body portion of the sleeve block 421. An annular groove 4324 is provided on the circumferential surface of the cylindrical portion in the radial direction. When the mounting block 4321 rotates with the housing 431, the other end of the limiting rod 4325 slides in the annular groove 4324 to axially position the housing 431 and prevent the housing 431 from moving along its axial direction, further improving the stability of the rotation of the mounting block 4321 and the housing 431.

[0046] In some embodiments, referring to Figure 4 , Figure 5 , Figures 6 - 8 , a first adjusting hole 4215 in an annular array is provided on the fixing block 4212, a locking bead 4323 is provided on the mounting block 4321, the locking bead 4323 includes a bead body 43231 and an elastic member 13212, the elastic member 13212 is fixedly connected to the mounting block 4321, when the mounting block 4321 rotates, the moving track of the bead body 43231 is located directly below the first adjusting hole 4215, that is, the bead body 43231 can be inserted into and removed from the first adjusting hole 4215, when the mounting block 4321 stops rotating, the bead body 43231 can be inserted into the corresponding first adjusting hole 4215 to fix the positions of the mounting block 4321 and the sleeve block 421. Through the above settings, when the staff rotates the housing 431 to adjust the curvature of the LED curved screen template 100, the gear movement of the adjusted curvature can be clearly felt, improving the touch feeling of the staff, and the curvature adjustment situation can be reconfirmed in combination with the curvature scale line 4221.

[0047] In a preferred embodiment, referring to Figure 4 , Figures 6 - 10 , Figures 12 - 13 , the sliding block 422 is provided with a sliding groove 4223 at the bottom of the avoiding groove 4224, the end of the cylindrical portion is provided with a sliding shaft portion, the sliding shaft portion is slidably connected in the sliding groove 4223 to adapt to the movement of the sliding block 422, a plurality of second adjusting holes 4222 arranged along the length direction of the sliding block 422 are provided at the bottom of the sliding groove 4223, the adjusting member 430 further includes a clamping convex 4326, the clamping convex 4326 is connected with an unlocking structure, the unlocking structure is used to drive the clamping convex 4326 to be embedded into the second adjusting hole 4222 to fix the positions of the mounting block 4321 and the sliding block 422, at this time the sliding block 422 cannot move in the sliding cavity, that is, the telescopic member 420 cannot be telescopic, so as to prevent the accidental adjustment of the curvature of the LED curved screen; the unlocking structure is used to drive the clamping convex 4326 to leave the second adjusting hole 4222 to unlock the mounting block 4321 and the sliding block 422, at this time the sliding block 422 can move in the sliding cavity, that is, the telescopic member 420 can be telescopic, and the curvature of the LED curved screen can be adjusted.

[0048] Further, the unlocking structure includes a connecting rod 4327 and a first spring 4329. The connecting rod 4327 is of a stepped structure and includes a first connecting rod 43271 and a second connecting rod 43273. A lug 43272 is provided at one end of the second connecting rod 43273 close to the first connecting rod 43271. A stepped sliding hole is provided on the mounting block 4321. The sliding hole includes a first sliding hole and a second sliding hole. The first connecting rod 43271 is slidably connected in the first sliding hole, and the lug 43272 is slidably connected in the second sliding hole. The clamping projection 4326 is provided at the end of the first connecting rod 43271. The first spring 4329 is sleeved on the second connecting rod 43273 and connected between the lug 43272 and the housing 431, so that an elastic force makes the connecting rod 4327 tend to move towards the sleeve block 421, that is, makes the projection snap into the second adjustment hole 4222.

[0049] Further, the housing 431 includes a fixed housing 4311 and a movable housing 4312. A guiding structure is connected between the fixed housing 4311 and the movable housing 4312. The guiding structure includes a guide sleeve 438 provided on the fixed housing 4311 and a guide post 434 provided on the movable housing 4312. The guide post 434 is slidably connected in the guide sleeve 438, so as to guide the movable housing 4312 to move closer to or away from the fixed housing 4311.

[0050] In addition, a connecting pipe 439 is provided on the fixed housing 4311. The inner wall of the connecting pipe 439 is provided with threads. A through hole is provided on the movable housing 4312. A limit bolt 436 is slidably connected in the through hole. The rod portion of the limit bolt 436 passes through the through hole and is threadedly connected to the connecting pipe 439, that is, the movable housing 4312 is connected to the fixed housing 4311. A second spring 435 is sleeved on the connecting pipe 439, and the second spring 435 is connected between the movable housing 4312 and the fixed housing 4311. When an external force drives the movable housing 4312 to move towards the fixed housing 4311, the movable housing 4312 slides relative to the limit bolt 436, and at this time the second spring 435 is in a compressed state. After the external force disappears, the second spring 435 drives the movable housing 4312 to move away from the fixed housing 4311, and the head of the limit bolt 436 limits to prevent the movable housing 4312 from continuing to move.

[0051] In the above embodiments, the mounting block 4321 is fixedly connected to the fixed housing 4311. Two oppositely arranged guiding blocks 437 are provided on the movable housing 4312. Two opposite limiting planes 43274 are provided on the second connecting rod 43273. The second connecting rod 43273 is slidably connected between the two guiding blocks 437 through the limiting planes 43274. An inclined guiding surface is provided at the bottom of the guiding block 437. A guiding rod 4328 is connected to the bottom of the connecting rod 4327. The guiding rod 4328 is in sliding contact with the guiding surface.

[0052] When an external force drives the movable housing 4312 to move towards the fixed housing 4311, the guiding surface drives the guiding rod 4328 to move downward, that is, drives the connecting rod 4327 to move towards the housing 431, thereby driving the clamping protrusion 4326 away from the second adjusting hole 4222, so that the angle adjusting mechanism 400 is in an unlocked state. At this time, the housing 431 can be rotated to adjust the curvature of the curved screen; after the external force disappears, the movable housing 4312 moves away from the fixed housing 4311, the guiding surface no longer acts on the guiding rod 4328, and under the action of the first spring 4329, the connecting rod 4327 is driven to move towards the telescopic member 420, that is, the clamping protrusion 4326 is inserted into the second adjusting hole 4222, thereby restricting the adjustment of the curvature of the curved screen and making the angle adjusting mechanism 400 in a locked state.

[0053] The above is a specific description of the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An LED curved screen that is convenient for adjusting the radian, characterized in that: It includes an LED curved screen template and an angle adjustment mechanism connected to the back side of the LED curved screen template. The angle adjustment mechanism includes a connecting member, a telescopic member, and an adjusting member. Both ends of the telescopic member are respectively rotatably connected to one of the connecting members. The connecting member is fixedly connected to the LED curved screen template. The adjusting member is connected to the telescopic member. The adjusting member is used to adjust the telescopic length of the telescopic member. When the telescopic member expands and contracts, it is used to drive the LED curved screen template to bend.

2. The LED curved screen facilitating arc adjustment according to claim 1, wherein: One of the telescopic members is respectively connected between the upper ends and the lower ends of the two connecting members. The adjusting member is connected between the two telescopic members.

3. The LED curved screen facilitating arc adjustment according to claim 2, wherein: The telescopic member includes a sliding block and a sleeve block with a sliding cavity. The sliding block is slidably connected in the sliding cavity. One end of the sliding block away from the sleeve block and one end of the sleeve block away from the sliding block are respectively rotatably connected to the two connecting members through an arc-shaped connecting block.

4. The LED curved screen facilitating arc adjustment according to claim 3, wherein: An observation window is provided on the sleeve block, and a radian scale line is provided on the sliding block. When the sliding block slides in the sleeve block, the radian scale line passes below the observation window.

5. The LED curved screen facilitating arc adjustment according to claim 3, wherein: The adjusting member includes a housing and a transmission structure provided at both ends of the housing. The housing is rotatably connected between the two sleeve blocks. The transmission structure is connected between the housing and the sliding block. When the housing rotates, it drives the sliding block to move in the sliding cavity through the transmission structure.

6. The LED curved screen facilitating the adjustment of the radian according to claim 5, characterized in that: The transmission structure includes a mounting block, a gear provided on the mounting block, and a rack provided on the sliding block. The mounting block is fixedly connected to the housing, and one end of the mounting block away from the housing penetrates the sleeve block and extends into the sliding cavity. The gear is provided at the end of the mounting block located in the sliding cavity. An avoidance groove is provided on the sliding block, and the rack is provided on the side wall of the avoidance groove. The gear is located in the avoidance groove and meshes with the rack.

7. The LED curved screen facilitating arc adjustment according to claim 6, characterized in that: A fixing block is provided on the mounting block. An avoidance hole communicating with the sliding cavity is provided on the fixing block. One end of the mounting block away from the housing passes through the avoidance hole and extends into the avoidance groove and is connected with the gear. An installation hole communicating with the avoidance hole is provided on the fixing block. A limiting rod is provided in the installation hole. An annular groove is provided on the mounting block. When the mounting block rotates with the housing, the limiting rod slides in the annular groove.

8. The LED curved screen facilitating arc adjustment according to claim 7, wherein: The fixing block is provided with a first adjustment hole in an annular array. A locking bead is provided on the mounting block. The locking bead is used to be stuck into the first adjustment hole to fix the positions of the mounting block and the sleeve block.

9. The LED curved screen facilitating arc adjustment according to claim 7, wherein: A sliding groove is provided at the bottom of the avoidance groove where the sliding block is located. The end of the mounting block is slidably connected in the sliding groove. A plurality of second adjustment holes arranged along the length direction of the sliding block are provided at the bottom of the sliding groove. A clamping protrusion is provided at the end of the mounting block. The clamping protrusion is connected with an unlocking structure. The unlocking structure is used to drive the clamping protrusion to embed into the second adjustment hole to fix the positions of the mounting block and the sliding block, or to drive the clamping protrusion to leave the second adjustment hole to unlock the mounting block and the sliding block.

10. The LED curved screen facilitating arc adjustment according to claim 9, characterized in that: The unlocking structure includes a connecting rod and a first spring. A sliding hole is provided on the mounting block. The connecting rod is slidably disposed in the sliding hole, and the clamping protrusion is disposed at the end of the connecting rod. The housing includes a fixed housing and a movable housing. A guiding structure is connected between the fixed housing and the movable housing. The guiding structure is used to guide the movable housing to move in a direction close to or away from the fixed housing. The mounting block is fixedly connected to the fixed housing. Two oppositely arranged guiding blocks are provided on the movable housing. Two opposite limiting planes are provided at the lower end of the connecting rod. The connecting rod is slidably connected between the sliding gaps of the two guiding blocks through the limiting planes. An inclined guiding surface is provided at the bottom of the guiding block. A guiding rod is connected to the bottom of the connecting rod. The first spring is used to provide an elastic force to make the connecting rod have a tendency to move towards the sleeve block.

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