Multi-curved surface structure small-pitch LED display screen

Abstract

This invention discloses a small-pitch LED display screen with a multi-curved surface structure, belonging to the field of display device technology. It includes multiple frames, each containing a drive board. A display module is located on one side of each frame, and the drive board is connected to the display module. In this invention, rotating the lead screw seat rotates the adjusting lead screw to adjust the relative height of the leveling assembly and the relative distance between the display module and the drive board. When the display module is impacted, the impact is transmitted from the leveling assembly to the buffer plate. The elastic buffer plate partially collapses, causing the contact plate to contact the bottom force plate. The energy-absorbing component at the top of the force plate deforms and collapses upon contact with the energy-absorbing component on the contact plate. This energy absorption improves the stability of the display module device, enhances the stability between multiple combined frames through independent buffer components, improves the overall placement and combination effect when performing small-pitch curved surface expansion combinations, and enhances the modular combination effect.

Description

Technical Field

[0001] This invention belongs to the field of display device technology, and particularly relates to a small-pitch LED display screen with a multi-curved surface structure. Background Technology

[0002] With the continuous development and improvement of LED technology, indoor LED displays, especially small-pitch products, have become widely used in a wide range of fields due to their seamless splicing, low brightness and high grayscale, high refresh rate, ultra-high definition, low energy consumption, and long lifespan, which meet market demands and promote energy-saving economic development. These applications include: power production dispatch and control centers, military command and control centers, urban management emergency command centers, traffic management command centers, industrial process control display systems, broadcast television display and monitoring systems, shopping mall, hotel, and communication information display systems, financial securities information display systems, government and enterprise multimedia video conferencing display systems, mining safety production monitoring systems, urban environmental monitoring and command systems, fire protection, meteorology, and maritime flood control command systems, airport and subway flight displays, and security monitoring systems.

[0003] Chinese invention patent CN103927947B discloses a small-pitch LED display screen, including a base shell, a HUB board disposed on one side of the base shell, and a small module disposed on the other side and electrically connected to the HUB board. The small module includes a module body and a drive control unit electrically connected to the module body for driving and controlling the module body. An adapter plate is also disposed between the small module and the HUB board, and the HUB board is electrically connected to the adapter plate. The drive control unit is disposed on the adapter plate. This invention can achieve the smallest possible LED display screen pitch and significantly reduce the defect rate of the small modules. However, the aforementioned small-pitch LED display screen needs to be connected to a rear frame during splicing, and assembly errors can easily occur between multiple displays, resulting in a poor overall display effect after assembly, indicating room for improvement. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that assembly errors between multiple displays can easily lead to poor display effects after overall assembly, and to propose a small-pitch LED display with a multi-curved surface structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A small-pitch LED display screen with a multi-curved surface structure includes multiple frames, a driver board inside each frame, and a display module on one side of each frame. The driver board is connected to the display module, and adjacent frames are connected by angle adaptation components. The angle adaptation components adjust the included angle between the frames to form a multi-curved surface structure. Buffer components are installed on both sides of the inner cavity of each frame, and leveling components are installed at both ends of each buffer component. The leveling components are connected to one side of the display module, and the device angle of the display module is adjusted by adjusting the distance between the leveling components and the display module.

[0007] A sealing component is installed on one side of the buffer component, and the sealing component fills the gap between the frame and the display module. In this embodiment, the size of the display module is slightly larger than the size of the frame, and the sealing component provides a complete sealing effect.

[0008] As a further description of the above technical solution:

[0009] The buffer assembly includes a fixed frame connected to one side of the drive plate. The inner cavity of the fixed frame is connected to a base. Buffer plates are slidably connected to both sides of the base. A lead screw seat is rotatably connected to the other end of the buffer plate. An adjusting lead screw is threaded into the lead screw seat. The top of the adjusting lead screw is connected to one side of the leveling assembly. The relative position of the display module on one side of the leveling assembly from the drive plate is adjusted by raising and lowering the adjusting lead screw within the lead screw seat.

[0010] As a further description of the above technical solution:

[0011] The other end of the adjusting screw is provided with a contact plate. Both sides of the inner cavity of the fixed frame are connected with force plates. Energy-absorbing components are provided on the opposite side of the contact plate and the force plate. The cross-sectional shape of the energy-absorbing components is M-shaped, and the energy-absorbing components on both sides are in contact. The shaking of the display module is absorbed by the energy-absorbing components through the downward pressure of the contact plate.

[0012] As a further description of the above technical solution:

[0013] The base has a groove on its top, and a collar is slidably connected in the groove. A telescopic rod is connected to one side of the collar, and the other end of the telescopic rod is connected to one side of the inner cavity of the groove through a fixing member. A first spring is sleeved on the telescopic rod, and the two ends of the first spring are respectively connected to the collar and the corresponding position on one side of the fixing member.

[0014] As a further description of the above technical solution:

[0015] The base is connected to a terminal block at the top, and the terminal block has a wiring section at the bottom. The wiring section extends to the bottom of the base and is connected to the drive plate. It is connected to the first wiring section provided on the side wall of the frame through the terminal block.

[0016] As a further description of the above technical solution:

[0017] The leveling assembly includes an adjustment plate, one side of which has a shaft, and multiple extension rods are rotatably connected around the shaft. The ends of the extension rods are provided with threaded grooves, and adjustment bolts are threadedly connected in the threaded grooves. One end of the adjustment bolt is connected to an adsorption part, and the adsorption part is connected to one side of the display module at the corresponding position.

[0018] As a further description of the above technical solution:

[0019] The angle adaptation component includes a receiving seat, which includes two receiving portions on both sides and a collapsible portion connected between the two receiving portions, thereby matching the angle changes of the two side frames through the collapsible portion.

[0020] As a further description of the above technical solution:

[0021] The collapsible portion has sliding holes on both sides, and guide rods are slidably connected in the sliding holes. A tension roller is connected between the two guide rods, and an elastic membrane is inserted through the tension roller. The two ends of the elastic membrane are coupled to one side of the adjacent display module through coupling members. A second spring is sleeved on the outside of the guide rod, and the two ends of the second spring are connected to the corresponding positions of the tension roller and the end of the guide rod.

[0022] As a further description of the above technical solution:

[0023] Both sides of the accommodating portion are connected to the inner side of the collapsible portion, and the squeezing rollers are in contact with one side of the elastic membrane.

[0024] As a further description of the above technical solution:

[0025] The sealing assembly includes a filling pad located between the display module and the frame. The filling pad has a U-shaped cross-section and an inner rib connected to the inner side of the filling pad. One side of the inner rib is connected to the side of the terminal block via a connecting rib.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In this invention, by setting up a buffer component, when the display module needs to be assembled, the relative height of the leveling component can be adjusted by rotating the lead screw seat to drive the adjustment lead screw to move. This can adjust the relative distance between the display module and the drive plate, thereby improving the adaptability of the device. When the display module is impacted, the impact can be transmitted from the leveling component to the buffer plate. The elastic buffer plate can partially collapse, causing the contact plate to contact the bottom force plate. When the energy-absorbing component at the top of the force plate contacts the energy-absorbing component of the contact plate, it can deform and collapse. By absorbing energy, the device stability of the display module is improved. The stability between multiple combined frames is improved by the independent buffer component. When performing small-pitch curved surface expansion combination, the overall placement and combination effect is improved, and the modular combination effect is improved.

[0028] 2. In this invention, the leveling component, after being connected to the display module via the adsorption part, can fully fit the display module. When the display module is assembled, the depth can be adjusted by turning the adsorption part to rotate the adjusting screw in the thread groove. The adjustment of the depth of the adsorption part can cause the corresponding display module connection position to tilt partially. By adjusting the position of the adsorption part at different angles on the periphery, the leveling process of the display module is completed, which is suitable for splicing and combining display modules after the curved surface angle position is adjusted, reducing assembly gaps and improving the splicing effect of modular combination.

[0029] 3. In this invention, the two side frames can be connected by the designed receiving seat. When the curved surface is arranged, the relative angle of the two side frames is adjusted to combine the curved surface. When the frame angle is adjusted, the receiving seat can be deflected by the corresponding collapsing part of the receiving part. The expansion of the collapsing part allows the two side receiving seats to fully fit the frame, improving the sealing effect of the frame combined with the curved surface, reducing the generation of combination gaps, and improving the combination sealing effect. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall disassembled structure of a small-pitch LED display screen with a multi-curved surface structure proposed in this invention;

[0031] Figure 2 This is a partial structural schematic diagram of a small-pitch LED display screen with a multi-curved surface structure proposed in this invention;

[0032] Figure 3 This is a partial structural diagram of a small-pitch LED display screen with a multi-curved surface structure proposed in this invention;

[0033] Figure 4 This is a rear view schematic diagram of a small-pitch LED display screen with a multi-curved surface structure proposed in this invention;

[0034] Figure 5 This is a schematic diagram of the disassembled structure of a buffer component for a small-pitch LED display screen with a multi-curved surface structure proposed in this invention;

[0035] Figure 6 This is a side view of a small-pitch LED display screen with a multi-curved surface structure proposed in this invention.

[0036] Figure 7 This is a schematic diagram of the overall structure of a buffer component for a small-pitch LED display screen with a multi-curved surface structure proposed in this invention.

[0037] Figure 8 The present invention proposes Figure 7 Enlarged structural diagram of section A;

[0038] Figure 9 This is a schematic diagram of the assembly of an angle adaptation component for a small-pitch LED display screen with a multi-curved surface structure proposed in this invention.

[0039] Figure 10 This is a schematic diagram of the angle adaptation component of a small-pitch LED display screen with a multi-curved surface structure proposed in this invention.

[0040] Legend:

[0041] 1. Frame; 2. Drive board; 3. Display module; 4. Buffer assembly; 401. Buffer plate; 402. Fixing frame; 403. Force plate; 404. Contact plate; 405. Lead screw seat; 406. Terminal block; 407. Collar; 408. Telescopic rod; 409. First spring; 410. Adjusting lead screw; 411. Base; 5. Leveling assembly; 501. Adjusting plate; 502. Extension rod; 503. Adsorption 504. Adjusting bolt; 6. Angle adaptation assembly; 601. Receiving seat; 602. Second wiring part; 603. Collapsible part; 604. Elastic membrane; 605. Coupling element; 606. Tensioning roller; 607. Elastic pad; 608. Squeeze roller; 609. Guide rod; 610. Second spring; 7. Sealing assembly; 701. Filler pad; 702. Connecting rib; 703. Inner rib; 8. First wiring part. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1-10 The present invention provides a technical solution: a small-pitch LED display screen with a multi-curved surface structure, comprising multiple frames 1, a driving plate 2 is provided inside the frame 1, a display module 3 is provided on one side of the frame 1, the driving plate 2 is connected to the display module 3, and adjacent frames 1 are connected by an angle adaptation component 6. The angle adaptation component 6 is used to adjust the included angle between the frames 1 to form a multi-curved surface structure. Buffer components 4 are installed on both sides of the inner cavity of the frame 1, and leveling components 5 are installed at both ends of the buffer components 4. The leveling components 5 are connected to one side of the display module 3, and the device angle of the display module 3 is adjusted by adjusting the distance between the leveling components 5 and the display module 3.

[0044] A sealing component 7 is installed on one side of the buffer component 4, and the sealing component 7 fills the gap between the frame 1 and the display module 3. The sealing component 7 fills the gap between the frame 1 and the display module 3. In this embodiment, the size of the display module 3 is slightly larger than the size of the frame 1, and the sealing component 7 provides a full sealing effect.

[0045] The buffer assembly 4 includes a fixed frame 402 connected to one side of the drive plate 2. The inner cavity of the fixed frame 402 is connected to a base 411. Buffer plates 401 are slidably connected to both sides of the base 411. A lead screw seat 405 is rotatably connected to the other end of the buffer plate 401. An adjusting lead screw 410 is threaded into the lead screw seat 405. The top end of the adjusting lead screw 410 is connected to one side of the leveling assembly 5. The relative position of the display module 3 from the drive plate 2 is adjusted by adjusting the lifting and lowering of the adjusting lead screw 410 within the lead screw seat 405.

[0046] The other end of the adjusting screw 410 is provided with a contact plate 404. Both sides of the inner cavity of the fixing frame 402 are connected with force plates 403. The contact plate 404 and the force plate 403 are provided with energy-absorbing components on the opposite side. The cross-sectional shape of the energy-absorbing components is M-shaped, and the two energy-absorbing components are in contact. The shaking of the display module 3 is absorbed by the energy-absorbing components through the downward pressure of the contact plate 404.

[0047] The base 411 has a groove on its top, and a collar 407 is slidably connected in the groove. A telescopic rod 408 is connected to one side of the collar 407, and the other end of the telescopic rod 408 is connected to one side of the inner cavity of the groove through a fastener. A first spring 409 is sleeved on the telescopic rod 408, and the two ends of the first spring 409 are respectively connected to the collar 407 and the corresponding position of the fastener.

[0048] The base 411 is connected to the top of the terminal block 406, and the terminal block 406 has a wiring part at the bottom. The wiring part extends to the bottom of the base 411 and is connected to the drive plate 2. It is connected to the first wiring part 8 provided on the side wall of the frame 1 through the terminal block.

[0049] Specifically, when the baffle needs to assemble the display module 3 using the data buffer component 4, the leveling component 5 can be used to adjust the display module 3 and the buffer plate 401. By rotating the screw seat 405, the adjusting screw 410 can be moved to adjust the relative height of the leveling component 5, thereby adjusting the relative distance between the display module 3 and the drive plate 2 to improve the adaptability of the device. When the display module 3 is impacted, the impact can be transmitted from the leveling component 5 to the buffer plate 401. The elastic buffer plate 401 can partially collapse, causing the contact plate 404 to contact the bottom force plate 403. When the energy-absorbing component at the top of the force plate 403 contacts the energy-absorbing component of the contact plate 404, it can deform and collapse, which is beneficial to improve the device stability of the display module 3 through energy absorption. The independent buffer component 4 improves the stability between multiple combined frames 1, improves the overall placement and combination effect when performing small-pitch curved surface expansion combination, and improves the modular combination effect.

[0050] Furthermore, the buffer plate 401 can slide in the groove through the collar 407 and press the telescopic rod 408. When the telescopic rod 408 is pressed, it can press the external first spring 409. The first spring 409 can absorb the lateral impact of the buffer plate 401 with its own elasticity. This is beneficial to improve the lateral impact resistance of the buffer plate 401 through the staggered energy absorption of the lateral position, thereby further improving the placement stability of the leveling component 5 and the connected leveling component 5.

[0051] Please see Figures 5-6 The leveling component 5 includes an adjustment plate 501. The adjustment plate 501 has a shaft on one side, and multiple extension rods 502 are rotatably connected around the shaft. The extension rods 502 have threaded grooves at their ends, and adjustment bolts 504 are threadedly connected inside the threaded grooves. One end of the adjustment bolts 504 is connected to an adsorption part 503, and the adsorption part 503 is connected to one side of the display module 3 at the corresponding position.

[0052] In this embodiment, there are three extension rods 502, and the adsorption part 503 is a suction cup or a bonding pad.

[0053] Specifically, the leveling component 5 is connected to the display module 3 via the adsorption part 503. The adsorption part 503 can fully fit the display module 3. When the display module 3 is assembled, the depth can be adjusted by turning the adsorption part 503 to drive the adjusting screw to rotate in the thread groove. The adjustment of the depth of the adsorption part 503 can drive the connection position of the display module 3 at the corresponding position to tilt slightly. This is beneficial for leveling the display module 3 by adjusting the position of the adsorption part 503 at different angles on the periphery. It is also beneficial for adapting to the splicing and combination of the display module 3 after the angle position of the curved surface is adjusted, reducing assembly gaps and improving the splicing effect of modular combination.

[0054] Furthermore, the position of the end adsorption part 503 on the circumference of the shaft can be adjusted by rotating the extension rod 502, thereby facilitating the adjustment of the support point of the display module 3 and adapting to the support stress by adjusting the position of the support point.

[0055] Please see Figures 9-10 The angle adaptation component 6 includes a receiving seat 601, which includes two receiving portions on both sides, and a collapsible portion 603 is connected between the two receiving portions.

[0056] The collapsible portion 603 has sliding holes on both sides, and guide rods 609 are slidably connected in the sliding holes. A tension roller 606 is connected between the two guide rods 609. An elastic membrane 604 is provided outside the tension roller 606. The ends of the elastic membrane 604 are coupled to one side of the adjacent display module 3 through coupling members 605. A second spring 610 is sleeved outside the guide rod 609. The two ends of the second spring 610 are connected to the tension roller 606 and the corresponding position of the end of the guide rod 609. An elastic pad 607 is provided between the ends of the elastic membrane 604.

[0057] The coupling component 605 can be a detachable or non-detachable connecting component such as a buckle, magnetic component, or rivet. The designed elastic pad 607 can maintain the sealing effect between the elastic membranes 604 on both sides and improve dust resistance and sealing.

[0058] Both sides of the collapsible portion 603 of the receiving portion are connected to the inner side of the extrusion roller 608, and the extrusion roller 608 is in contact with one side of the elastic film 604.

[0059] Specifically, through the designed receiving seat 601, the two side frames 1 can be connected through the receiving seat 601, and when the curved surface is arranged, the relative angle of the two side frames 1 can be adjusted to combine the curved surface. When the angle of the frame 1 is adjusted, the receiving seat 601 can be deflected through the corresponding collapsible part 603 of the receiving part, so that the two side receiving seats 601 can fully fit the frame 1 through the expansion of the collapsible part 603, improve the sealing effect of the frame 1 combined with the curved surface, reduce the generation of combination gaps, and improve the combination sealing effect.

[0060] Furthermore, through the designed elastic film 604, the elastic film 604 can be connected to the front display module 3 via the coupling members 605 on both sides, thereby sealing the gap between the two display modules 3. The elastic film 604 can also connect the two display modules 3 simultaneously to improve the joint impact resistance. At the same time, when the elastic film 604 is located between the two display modules 3, the tension roller 606 can control the tension of the elastic film 604 by stretching it, thereby controlling the connection strength between the display modules 3. The lateral squeezing roller 608 can simultaneously adhere to the side of the elastic film 604, which is beneficial for dispersing the impact force through the three-point contact of the elastic film 604, while reducing the interference of the elastic film 604 in the receiving seat 601 and improving the connection effect.

[0061] Meanwhile, the elastic film 604 should be a light-blocking material to improve the sealing effect on the light transmittance of the gap between the combined screens. Furthermore, through the designed tension roller 606 and guide rod 609, the tension roller 606 can slide more stably in the housing 601 through the guide rod 609, avoiding impact that causes the elastic film 604 to shift and affect the positioning effect.

[0062] The frame 1 has a second wiring section 602 on each side, and the second wiring section 602 is connected to the first wiring section 8. Through the design of the first wiring section 8 and the second wiring section 602, the connecting wire harness of the drive board 2 can be extended to the second wiring section 602 on the side of the receiving seat 601 after being connected to the wiring base 406. This makes it convenient to integrate the wire harness into the receiving seat 601, and facilitates the arrangement and extension of the wire harness. Furthermore, the elastic film 604 can improve the sealing effect after being wrapped around the outside of the wire harness, prevent the wire harness from being pulled and pulled away, improve the integration of the wire harness, and facilitate the assembly and arrangement of curved surfaces.

[0063] The sealing assembly 7 includes a filling pad 701, which is located between the display module 3 and the frame 1. The filling pad 701 has a U-shaped cross-section. An inner rib 703 is connected to the inner side of the filling pad 701, and one side of the inner rib 703 is connected to the side of the terminal block 406 through a connecting rib 702.

[0064] The designed filling pad 701, with the two filling pads 701 combined together, can fully seal the gap between the display module 3 and the frame 1. The inner rib 703 and the connecting rib 702 can improve the sealing effect to prevent external dust from entering the gap between the display module 3 and the frame 1.

[0065] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A small-pitch LED display screen with multi-curved surface structure, comprising a plurality of frames (1), a driving board (2) is arranged in the frame (1), a display module (3) is arranged on one side of the frame (1), and the driving board (2) is connected with the display module (3), characterized in that, Furthermore, adjacent frames (1) are connected by an angle adaptation component (6). The angle between the frames (1) is adjusted by the angle adaptation component (6) to form a multi-curved structure. Buffer components (4) are installed on both sides of the inner cavity of the frame (1). Leveling components (5) are installed at both ends of the buffer components (4). The leveling components (5) are connected to one side of the display module (3). The device angle of the display module (3) is adjusted by adjusting the distance between the leveling components (5) and the display module (3). A sealing component (7) is installed on one side of the buffer components (4). The sealing component (7) fills the gap between the frame (1) and the display module (3). The buffer assembly (4) includes a fixed frame (402), which is connected to one side of the drive plate (2). The inner cavity of the fixed frame (402) is connected to a base (411). Both sides of the base (411) are slidably connected to buffer plates (401). The other end of the buffer plate (401) is rotatably connected to a lead screw seat (405). The lead screw seat (405) is threaded with an adjusting lead screw (410). The top end of the adjusting lead screw (410) is connected to one side of the leveling assembly (5). The relative position of the display module (3) to the drive plate (2) is adjusted by adjusting the lifting and lowering of the adjusting lead screw (410) in the lead screw seat (405). The other end of the adjusting screw (410) is provided with a contact plate (404). Both sides of the inner cavity of the fixing frame (402) are connected with force plates (403). The contact plate (404) and the force plate (403) are provided with energy-absorbing components on the opposite side. The cross-sectional shape of the energy-absorbing component is M-shaped, and the two energy-absorbing components are in contact. The contact plate (404) presses down to make the energy-absorbing component absorb the shaking impact of the display module (3). The leveling component (5) includes an adjustment plate (501). The adjustment plate (501) has a shaft on one side, and multiple extension rods (502) are rotatably connected around the shaft. The extension rods (502) have threaded grooves at their ends, and adjustment bolts (504) are threadedly connected inside the threaded grooves. One end of the adjustment bolts (504) is connected to an adsorption part (503), and the adsorption part (503) is connected to one side of the display module (3) at the corresponding position. The angle adaptation component (6) includes a receiving seat (601), which includes two receiving portions on both sides and a collapsible portion (603) connected between the two receiving portions. The collapsible portion (603) matches the angle change of the two side frames (1). 2.The small-pitch LED display screen with multi-curved surface structure of claim 1, wherein, The base (411) has a groove at the top, and a collar (407) is slidably connected in the groove. A telescopic rod (408) is connected to one side of the collar (407), and the other end of the telescopic rod (408) is connected to one side of the inner cavity of the groove through a fixing member. A first spring (409) is provided on the outer sleeve of the telescopic rod (408), and the two ends of the first spring (409) are respectively connected to the collar (407) and the corresponding position of the fixing member. 3.The small-pitch LED display screen with multi-curved surface structure of claim 2, wherein, The base (411) is connected to a terminal block (406) at the top. The terminal block (406) has a wiring part at the bottom. The wiring part extends to the bottom of the base (411) and is connected to the drive plate (2). It is connected to the first wiring part (8) provided on the side wall of the frame (1) through the terminal block. 4.The small-pitch LED display screen with multi-curved surface structure of claim 1, wherein, The angle adaptation component (6) includes a receiving seat (601), which includes two receiving portions on both sides and a collapsible portion (603) connected between the two receiving portions. The collapsible portion (603) matches the angle change of the two side frames (1).

5. The small-pitch LED display screen of a multi-curved surface structure according to claim 4, characterized in that, The collapsible portion (603) has sliding holes on both sides, and guide rods (609) are slidably connected in the sliding holes. A tension roller (606) is connected between the two guide rods (609), and an elastic film (604) is provided outside the tension roller (606). The ends of the elastic film (604) are coupled to one side of the adjacent display module (3) through coupling members (605). A second spring (610) is sleeved outside the guide rod (609). The two ends of the second spring (610) are connected to the corresponding positions of the ends of the tension roller (606) and the guide rod (609), respectively. An elastic pad (607) is provided between the ends of the elastic film (604). 6.The small-pitch LED display screen with multi-curved surface structure of claim 5, wherein, The inner sides of the collapsible portions (603) on both sides of the accommodating portion are connected to the squeezing rollers (608), and the squeezing rollers (608) are in contact with one side of the elastic membrane (604). 7.The small-pitch LED display screen with multi-faceted structure of claim 1, wherein, The sealing assembly (7) includes a filling pad (701), which is located between the display module (3) and the frame (1). The filling pad (701) has a U-shaped cross-section. An inner rib (703) is connected to the inner side of the filling pad (701), and one side of the inner rib (703) is connected to the side of the terminal block (406) through a connecting rib (702).

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