A multi-protection display screen and assembly thereof

Abstract

The application relates to the technical field of display screen protection devices, in particular to a multiple-protection display screen and an assembly thereof, which comprises a trolley, the upper end of the trolley is fixedly connected with a storage box, the inner side of the storage box is provided with a naked-eye three-dimensional corner screen main body, the naked-eye three-dimensional corner screen main body is composed of a plurality of small display screens, the inner side of the storage box is provided with a folding and unfolding mechanism for adjusting the screen, the inner side of the storage box is provided with a maintenance mechanism for maintaining the screen, the bidirectional thread design of the third threaded rod in the adjusting assembly can drive two first moving blocks to be synchronously opened and closed, the sliding meshing structure of the clamping strip rod and the worm is matched, so that the detection assembly can be self-adapted to the rear-end components of the silicon-based OLED small display screen of different sizes; the arc-shaped clamping plate of the detection assembly is attached to the corner wheel contour of the screen body, a positioning probe accurately locks key areas such as a driving chip welding point and an encapsulation layer edge, and an industrial camera slides along the arc-shaped rack to realize dead-angle-free scanning.

Description

Technical Field

[0001] This invention relates to the field of display screen protection devices, specifically to a multi-protection display screen and its components. Background Technology

[0002] Silicon-based OLED video wall displays are widely used in outdoor advertising due to the high pixel density and excellent contrast characteristics brought by organic light-emitting diodes. However, the light-emitting layer of organic light-emitting diodes is fragile and easily affected by the environment, making its protection and maintenance a core challenge. Outdoor wind, sand and rain can easily corrode the encapsulation structure, leading to performance degradation. Local failures of the video wall require complete disassembly, which can easily damage precision components.

[0003] Patent CN221832878U discloses a protective plate for an LCD screen. This solution uses a drive motor to drive a threaded rod to lift and lower a sliding plate, so that the hinged protective plate can block or detach from the LCD screen. At the same time, a fan on the sliding plate generates airflow, and the direction of the airflow is adjusted by a rotating plate. During the process of the protective plate falling, the screen is cleaned of dust, which solves the problem of cleaning LCD screens in high dust environments to a certain extent. However, the above technical solutions still have the following shortcomings in practical applications: First, the solution has poor adaptability to different objects. Designed for ordinary LCD screens, it fails to consider the fragile nature of the organic light-emitting diode (OLED) layer in silicon-based OLED splicing screens. Its airflow-based dust removal method cannot remove tiny sand particles adhering to the screen, and it lacks protective design for screen edges and splicing seams, allowing contaminants to easily penetrate during outdoor use. Second, the cleaning method carries a risk of damage. The solution lacks a flexible cleaning structure adapted to OLEDs. If directly applied to silicon-based OLED screens, particles carried by the airflow or subsequent manual wiping may scratch the OLED layer, leading to display failure. Third, it lacks targeted maintenance capabilities. The solution only provides… The system is equipped with passive protection and basic cleaning functions. However, it cannot accurately locate, disassemble, or perform specialized testing on faulty units in silicon-based OLED splicing screens due to localized faults. Traditional maintenance methods, which involve disassembling the entire splicing display, significantly increase the probability of damage to the organic light-emitting diodes and flexible circuit boards, leading to a surge in maintenance costs. Fourthly, the protection scenarios are limited. The protective plates in the comparison documents can only block the front of the screen and cannot provide a sealed space for dust and rain protection for silicon-based OLED splicing screens placed outdoors. Long-term exposure of the screen can easily lead to accelerated aging of the organic light-emitting diode encapsulation layer. Therefore, we propose a multi-protection display screen and its components. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a multi-protection display screen and its components.

[0005] The technical solution adopted by this invention to solve its technical problem is: a multi-protection display screen and its components, including a trolley, a storage box fixedly connected to the upper end of the trolley, a naked-eye 3D corner screen body arranged inside the storage box, the naked-eye 3D corner screen body being composed of multiple small display screens spliced ​​together, a screen-raising and lowering mechanism arranged inside the storage box, the screen-raising and lowering mechanism including a lifting component for adjusting the screen position, a cleaning component for cleaning the screen, a screen-maintenance mechanism arranged inside the storage box, the screen-retrieving component including a screen-adsorbing component for adsorbing a specified small display screen, an adjustment component for switching height, and a detection component for detecting the status of the small display screen chassis.

[0006] Preferably, the lifting assembly includes a first motor installed inside the storage box, the output shaft of the first motor is fixedly connected to a first gear, the upper end of the first gear is fixedly connected to a first threaded rod, the outer side of the first threaded rod is threadedly connected to the housing of the naked-eye 3D corner screen body, and the lifting assembly also includes a rear guide rod slidably connected to the inner side of the housing of the naked-eye 3D corner screen body.

[0007] Preferably, a second gear is meshed with the outer side of the first gear, a second threaded rod is fixedly connected to the inner side of the second gear, the lower end of the second threaded rod is rotatably connected to the storage box, a guide plate is threadedly connected to the outer side of the second threaded rod, a front guide rod is slidably connected to the inner side of the guide plate, the lower end of the front guide rod is fixedly connected to the storage box, and two T-shaped sliders are fixedly connected to the inner side of the guide plate. The T-shaped sliders are slidably connected to the inner side of the housing of the naked-eye 3D corner screen body.

[0008] Preferably, the cleaning assembly includes two connecting frames, one side of which is fixedly connected to a guide plate, and the other side of the two connecting frames is fixedly connected to a mounting box. Multiple electric fans are installed inside the mounting box, and flexible brushes are fixedly connected to the outer side of the blades of the electric fans.

[0009] Preferably, the screen-grabbing assembly includes a mounting bracket slidably connected to the outside of the guide plate. A second motor is mounted on the upper end of the mounting bracket. A third gear is fixedly connected to the output shaft of the second motor. A first rack is meshed with the outer side of the third gear. The first rack is fixedly connected to the inner wall of the guide plate. Multiple electric telescopic rods are mounted on the rear end of the mounting bracket. A pressure sensor is provided on the inner side of each electric telescopic rod. A vacuum suction cup is fixedly connected to the output shaft of each electric telescopic rod via a universal coupling.

[0010] Preferably, the adjustment assembly includes a support frame fixedly connected to the mounting bracket, a third threaded rod rotatably connected to the inner side of the support frame, two mutually symmetrical threads provided on the outer side of the third threaded rod, a fourth motor mounted on one side of the support frame, the output shaft of the fourth motor fixedly connected to the third threaded rod, two first moving blocks threadedly connected to the outer side of the third threaded rod, and a second moving block fixedly connected to the lower end of the first moving blocks.

[0011] Preferably, a worm gear is rotatably connected to the inner side of the second moving block, and a locking bar is slidably connected to the inner side of the two worm gears. The locking bar is rotatably connected to the inner side of the support frame, and a fifth motor is installed on the other side of the support frame. The output shaft of the fifth motor is fixedly connected to the locking bar.

[0012] Preferably, a third moving block is fixedly connected to the front end of the second moving block, a fourth gear is rotatably connected to the inner side of the third moving block, a limit frame is fixedly connected to the lower end of the third moving block, a fourth threaded rod is rotatably connected to the inner side of the limit frame, the upper end of the fourth threaded rod is fixedly connected to the fourth gear, a connecting block is threadedly connected to the outer side of the fourth threaded rod, and the connecting block is slidably connected to the inner side of the limit frame.

[0013] Preferably, the detection component includes two symmetrical arc-shaped clamps. The outer sides of the arc-shaped clamps are fixedly connected to a connecting block. An arc-shaped rack is slidably connected to the inner side of the arc-shaped clamps. Limit plates are fixedly connected to both the upper and lower ends of the arc-shaped rack. Multiple fifth gears are rotatably connected to the inner side of the arc-shaped clamps. Multiple sixth motors are installed at the lower end of the arc-shaped clamps. The output shafts of the sixth motors are fixedly connected to a corresponding fifth gear above them. A positioning probe is installed on the inner wall of the arc-shaped clamps.

[0014] Preferably, a movable frame is slidably connected to the outer side of the arc-shaped rack, a seventh motor is installed at the upper end of the movable frame, a sixth gear is fixedly connected to the output shaft of the seventh motor, the outer side of the sixth gear meshes with the arc-shaped rack, and an industrial camera is installed on one side of the movable frame.

[0015] Compared with the prior art, the present invention provides a multi-protection display screen and its components, which has the following beneficial effects: 1. In non-working state, the naked-eye 3D corner screen is completely stored in the storage box. The sealed structure of the storage box provides dust and rain protection, preventing outdoor wind, sand, and rain from directly corroding the silicon-based OLED driver chip and flexible cable. Compared with the existing open protection structure, the aging rate of the screen encapsulation layer is reduced. During the unfolding / folding of the screen, the lifting component moves the naked-eye 3D corner screen up and down. At the same time, the meshing transmission of the first and second gears causes the guide plate to move in the opposite direction. Then, the connecting frame drives the cleaning component to work synchronously. The directional airflow generated by the electric fan first blows away hard particles such as sand, and the flexible brush performs a second wiping. This avoids the damage to the light-emitting layer caused by dry wiping and hard scraping in the existing technology, keeping the surface of the silicon-based OLED screen clean and ensuring that the display contrast is not affected by dust.

[0016] 2. The screen retrieval assembly, through the meshing transmission of the second motor, the third gear, and the first rack, combined with the longitudinal adjustment of the lifting assembly, can improve positioning accuracy in a two-dimensional coordinate system of "horizontal + longitudinal". The pressure sensor built into the electric telescopic rod controls the contact pressure in real time, and the universal coupling adapts to the curvature of the corner screen, ensuring a stable seal between the vacuum suction cup and the screen body while avoiding compression of the fragile encapsulation layer of the silicon-based OLED. Compared with existing technologies, this reduces the breakage rate of disassembling faulty screens. The bidirectional thread design of the third threaded rod in the adjustment assembly can drive the two first moving blocks to open and close synchronously. Combined with the sliding meshing structure of the locking rod and the worm gear, this allows for more precise detection. The component can adapt to the back-end components of silicon-based OLED small displays of different sizes; the arc-shaped clamp of the detection component fits the corner contour of the screen, the positioning probe accurately locks the key areas such as the solder joints of the driver chip and the edge of the encapsulation layer, and the industrial camera slides along the arc-shaped toothed rack to achieve a scan without blind spots. Compared with the existing manual visual inspection, the accuracy of fault identification is improved, and it can capture cable damage and cold solder joint traces; through the non-destructive disassembly of the screen component, the rapid adaptation of the adjustment component, and the accurate inspection of the detection component, the maintenance time of a single faulty screen is shortened, and there is no need to disassemble the entire naked-eye 3D corner screen body, which greatly reduces the manpower and time costs of outdoor maintenance.

[0017] 3. The T-shaped slider in the lifting component slides along the slide groove of the naked-eye 3D corner screen main body, ensuring that the guide plate and the screen body always remain vertically aligned, so that the movement trajectory of the cleaning component and maintenance mechanism is completely matched with the screen body, avoiding scratches; the lateral movement of the screen picking component and the longitudinal movement of the lifting component form an orthogonal coordinate system, and the movement ranges do not overlap, solving the pain point of motion conflict of multiple mechanisms in the existing technology; the first motor drives the screen body lifting and the guide plate moving synchronously through the gear set, realizing "single power source dual action", improving power transmission efficiency; the sliding meshing structure of the locking bar and worm gear in the adjustment component not only ensures the continuity of power transmission, but also adapts to the spacing adjustment requirements of the first moving block, avoiding the problem of easy breakage of the existing rigid transmission structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the internal structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the launching and retracting mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the launching and retracting mechanism of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the launching and retracting mechanism of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the overall structure of the maintenance mechanism of the present invention; Figure 7 This is a schematic diagram of the overall structure of the screen capture component of the present invention; Figure 8 This is a schematic diagram of the overall structure of the adjustment component of the present invention; Figure 9 This is a cross-sectional schematic diagram of the overall structure of the adjustment component of the present invention; Figure 10 This is a schematic diagram of the overall structure of the detection component of the present invention; Figure 11 This is a cross-sectional schematic diagram of a portion of the detection component of the present invention; Figure 12 This is a schematic diagram of the detection component of the present invention.

[0019] In the diagram: 1. Trolley; 2. Storage box; 3. Main body of naked-eye 3D corner screen; 4. Retraction mechanism; 41. Lifting assembly; 411. First motor; 412. First gear; 413. First threaded rod; 414. Rear guide rod; 415. Second gear; 416. Second threaded rod; 417. Guide plate; 418. Front guide rod; 419. T-shaped slider; 42. Cleaning assembly; 421. Connecting frame; 422. Mounting box; 423. Electric fan; 424. Flexible brush; 5. Maintenance mechanism; 51. Screen retrieval assembly; 511. Mounting frame; 512. Second motor; 513. Third gear; 514. First rack; 515. Electric telescopic rod; 516. True 52. Empty suction cup; 52. Adjustment assembly; 521. Support frame; 522. Third threaded rod; 523. Fourth motor; 524. First moving block; 525. Second moving block; 526. Worm gear; 527. Clamping bar; 528. Fifth motor; 529. Third moving block; 5210. Fourth gear; 5211. Limiting frame; 5212. Fourth threaded rod; 5213. Connecting block; 53. Detection assembly; 531. Arc-shaped clamping plate; 532. Arc-shaped rack; 533. Limiting plate; 534. Fifth gear; 535. Sixth motor; 536. Positioning probe; 537. Moving frame; 538. Sixth gear; 539. Seventh motor; 5310. Industrial camera. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The following electrical components are all electrically connected via an external PLC controller.

[0022] Please see Figures 1-12 A multi-protection display screen and its components include a trolley 1, a storage box 2 fixedly connected to the upper end of the trolley 1, a naked-eye 3D corner screen body 3 arranged inside the storage box 2, the naked-eye 3D corner screen body 3 being composed of multiple small display screens spliced ​​together, a screen-raising and lowering mechanism 4 arranged inside the storage box 2, the screen-raising and lowering mechanism 4 including a lifting component 41 for adjusting the screen position, a cleaning component 42 for cleaning the screen, a maintenance mechanism 5 arranged inside the storage box 2 for maintaining the screen, the screen-picking component 51 for adsorbing a specified small display screen, an adjustment component 52 for switching height, and a detection component 53 for detecting the status of the small display screen chassis.

[0023] In this embodiment, the lifting assembly 41 includes a first motor 411 installed inside the storage box 2. The output shaft of the first motor 411 is fixedly connected to a first gear 412. The upper end of the first gear 412 is fixedly connected to a first threaded rod 413. The outer side of the first threaded rod 413 is threadedly connected to the housing of the naked-eye 3D corner screen body 3. The lifting assembly 41 also includes a rear guide rod 414 slidably connected to the inner side of the housing of the naked-eye 3D corner screen body 3.

[0024] Specifically, the first motor 411 provides a power source for the lifting and lowering of the naked-eye 3D corner screen body 3, and its output shaft can synchronously drive the first gear 412 and the first threaded rod 413 to rotate; the first threaded rod 413 converts the rotational motion of the motor into the linear motion of the screen body through the threaded engagement with the housing of the naked-eye 3D corner screen body 3; the rear guide rod 414 plays a vertical limiting role for the naked-eye 3D corner screen body 3, preventing the screen body from shifting or shaking during the lifting and lowering process, avoiding pixel point soldering failures due to unstable posture of the silicon-based OLED screen body, and ensuring that the screen body smoothly detaches or falls back into the storage box 2.

[0025] In this embodiment, the outer side of the first gear 412 is meshed with the second gear 415, the inner side of the second gear 415 is fixedly connected with the second threaded rod 416, the lower end of the second threaded rod 416 is rotatably connected to the storage box 2, the outer side of the second threaded rod 416 is threadedly connected with the guide plate 417, the inner side of the guide plate 417 is slidably connected with the front guide rod 418, the lower end of the front guide rod 418 is fixedly connected to the storage box 2, and the inner side of the guide plate 417 is fixedly connected with two T-shaped sliders 419, which are slidably connected to the inner side of the housing of the naked-eye 3D corner screen body 3.

[0026] Specifically, the first gear 412 drives the second gear 415 to rotate in the opposite direction through meshing transmission, realizing the reverse transmission of power, so that the second threaded rod 416 and the first threaded rod 413 form an opposite movement trend; the second threaded rod 416 drives the guide plate 417 to move in the vertical direction through threaded engagement, and the front guide rod 418 provides stable support for the guide plate 417 to prevent it from rotating; the T-shaped slider 419 can slide along the slide groove of the naked-eye 3D corner screen body 3 housing to ensure that the guide plate 417 and the screen body always remain vertically aligned, preventing the guide plate 417 from scraping the edge of the silicon-based OLED screen body when it drives the cleaning component 42 to move, and at the same time providing a stable installation base for the subsequent maintenance mechanism 5.

[0027] In this embodiment, the cleaning component 42 includes two connecting frames 421. One side of the connecting frame 421 is fixedly connected to the guide plate 417, and the other side of the two connecting frames 421 is fixedly connected to the mounting box 422. Multiple electric fans 423 are installed inside the mounting box 422, and flexible brushes 424 are fixedly connected to the outer side of the blades of the electric fans 423.

[0028] Specifically, the connecting bracket 421 serves to connect and fix the mounting box 422 to the guide plate 417, ensuring that the cleaning component 42 can move synchronously with the guide plate 417; the mounting box 422 provides a mounting carrier for the electric fan 423, ensuring its stability during operation; when the electric fan 423 rotates, it generates directional airflow, which can blow away outdoor dust and sand particles on the surface of the silicon-based OLED screen, while driving the flexible brush 424 to rotate and gently wipe the screen; the material of the flexible brush 424 is adapted to the fragile light-emitting layer of the silicon-based OLED, avoiding hard scratch damage to the screen, achieving dual protection of "airflow dust blowing + brush cleaning", and completing the cleaning operation when the screen is unfolded or stored.

[0029] In this embodiment, the screen-grabbing assembly 51 includes a mounting bracket 511 slidably connected to the outside of the guide plate 417. A second motor 512 is mounted on the upper end of the mounting bracket 511. A third gear 513 is fixedly connected to the output shaft of the second motor 512. A first rack 514 is meshed with the outer side of the third gear 513. The first rack 514 is fixedly connected to the inner wall of the guide plate 417. A plurality of electric telescopic rods 515 are mounted on the rear end of the mounting bracket 511. A pressure sensor is provided on the inner side of the electric telescopic rod 515. A vacuum suction cup 516 is fixedly connected to the output shaft of the electric telescopic rod 515 through a universal coupling.

[0030] Specifically, the mounting bracket 511 provides mounting support for each component of the screen removal assembly 51 and can slide along the outside of the guide plate 417 to achieve lateral displacement; the second motor 512 provides power for lateral movement, and its output shaft drives the third gear 513 to roll along the first rack 514, thereby driving the mounting bracket 511 to be precisely positioned; the electric telescopic rod 515 can achieve telescopic movement, pushing the vacuum suction cup 516 closer to or away from the screen body, and the pressure sensor on its inner side can monitor the contact pressure in real time to prevent squeezing the silicon-based OLED screen encapsulation structure; the universal coupling can adapt to the curvature of the outer corner of the naked-eye three-dimensional corner screen body 3, ensuring that the vacuum suction cup 516 and the screen body form a complete sealed cavity, and the vacuum suction cup 516 smoothly removes the faulty screen body through adsorption force, avoiding pulling the silicon-based OLED flexible circuit board.

[0031] In this embodiment, the adjustment component 52 includes a support frame 521 fixedly connected to the mounting frame 511. A third threaded rod 522 is rotatably connected to the inner side of the support frame 521. Two mutually symmetrical threads are provided on the outer side of the third threaded rod 522. A fourth motor 523 is installed on one side of the support frame 521. The output shaft of the fourth motor 523 is fixedly connected to the third threaded rod 522. Two first moving blocks 524 are threadedly connected to the outer side of the third threaded rod 522. A second moving block 525 is fixedly connected to the lower end of the first moving block 524.

[0032] Specifically, the support frame 521 provides a stable mounting frame for the adjustment component 52, ensuring stable operation of each transmission component; the fourth motor 523 drives the third threaded rod 522 to rotate, and the bidirectional symmetrical thread on the outer side of the third threaded rod 522 can drive the two first moving blocks 524 to open or close synchronously; the second moving block 525 receives the power from the first moving block 524, driving the subsequent components to adjust the spacing, so that the detection component 53 can be adapted to core components of different sizes such as the silicon-based OLED screen back-end drive board and ribbon cable interface, providing a foundation for accurate detection.

[0033] In this embodiment, a worm gear 526 is rotatably connected to the inner side of the second moving block 525, and a locking bar 527 is slidably connected to the inner side of the two worm gears 526. The locking bar 527 is rotatably connected to the inner side of the support frame 521. A fifth motor 528 is installed on the other side of the support frame 521, and the output shaft of the fifth motor 528 is fixedly connected to the locking bar 527.

[0034] Specifically, the fifth motor 528 provides power for the angle adjustment, and its output shaft drives the clamping rod 527 to rotate. The clamping rod 527 and the worm gear 526 form a sliding meshing structure, which can adapt to the change in the distance between the two worm gears 526 as the first moving block 524 occurs while driving the worm gear 526 to rotate. The worm gear 526 transmits the rotational power of the clamping rod 527 to the subsequent gear assembly, realizing the direction and transmission of power, and providing power support for the longitudinal movement of the detection assembly 53.

[0035] In this embodiment, a third moving block 529 is fixedly connected to the front end of the second moving block 525, a fourth gear 5210 is rotatably connected to the inner side of the third moving block 529, a limit frame 5211 is fixedly connected to the lower end of the third moving block 529, a fourth threaded rod 5212 is rotatably connected to the inner side of the limit frame 5211, the upper end of the fourth threaded rod 5212 is fixedly connected to the fourth gear 5210, and a connecting block 5213 is threadedly connected to the outer side of the fourth threaded rod 5212. The connecting block 5213 is slidably connected to the inner side of the limit frame 5211.

[0036] Specifically, the third moving block 529 provides mounting support for the fourth gear 5210, receives the power from the second moving block 525, and transmits it to the transmission component; the fourth gear 5210 meshes with the worm gear 526, converting the rotational power of the worm gear 526 into the rotation of the fourth threaded rod 5212; the limiting frame 5211 guides and limits the connecting block 5213, preventing it from rotating with the fourth threaded rod 5212; the fourth threaded rod 5212 drives the connecting block 5213 to move longitudinally along the limiting frame 5211 through threaded engagement, thereby driving the detection component 53 to complete longitudinal scanning and realize comprehensive detection of the silicon-based OLED screen.

[0037] In this embodiment, the detection component 53 includes two mutually symmetrical arc-shaped clamps 531. The outer side of the arc-shaped clamps 531 is fixedly connected to the connecting block 5213. An arc-shaped rack 532 is slidably connected to the inner side of the arc-shaped clamps 531. Limit plates 533 are fixedly connected to both the upper and lower ends of the arc-shaped rack 532. Multiple fifth gears 534 are rotatably connected to the inner side of the arc-shaped clamps 531. Multiple sixth motors 535 are installed at the lower end of the arc-shaped clamps 531. The output shafts of the sixth motors 535 are fixedly connected to a corresponding fifth gear 534 above. A positioning probe 536 is installed on the inner wall of the arc-shaped clamps 531.

[0038] Specifically, the arc-shaped structure of the arc-shaped clamp 531 can conform to the contour of the silicon-based OLED corner screen, achieving a surrounding fixation of the faulty screen; the sixth motor 535 drives the fifth gear 534 to rotate, and multiple fifth gears 534 work together to drive the arc-shaped rack 532 to slide along the arc-shaped clamp 531, adjusting the extension length of the arc-shaped rack 532 to adapt to the screen size; the limiting plate 533 can prevent the arc-shaped rack 532 from shifting due to vibration when sliding, ensuring detection accuracy; the positioning probe 536 can accurately identify key areas such as the solder joints of the silicon-based OLED driver chip and the edge of the encapsulation layer, providing a coordinate reference for the detection of the industrial camera 5310, ensuring the targeting of the detection.

[0039] In this embodiment, a movable frame 537 is slidably connected to the outer side of the arc-shaped rack 532. A seventh motor 539 is installed at the upper end of the movable frame 537. A sixth gear 538 is fixedly connected to the output shaft of the seventh motor 539. The outer side of the sixth gear 538 is meshed with the arc-shaped rack 532. An industrial camera 5310 is installed on one side of the movable frame 537.

[0040] Specifically, the movable frame 537 provides a mounting carrier for the seventh motor 539 and the industrial camera 5310, and can slide along the arc-shaped rack 532; the seventh motor 539 drives the sixth gear 538 to rotate, and the sixth gear 538 drives the movable frame 537 to move smoothly through meshing with the arc-shaped rack 532; the industrial camera 5310 moves synchronously with the movable frame 537 to perform a comprehensive scan of the back end of the silicon-based OLED screen, focusing on capturing faults such as poor soldering marks of the driver chip, broken flexible cable, and aging cracks in the encapsulation layer, and completing accurate fault diagnosis.

[0041] Working principle: When in use, push the cart 1 to move the device to the designated outdoor placement location. The stable base of the cart 1 ensures the stability of the device in outdoor environments with light winds and uneven ground, avoiding pixel failures and other malfunctions caused by vibration in the silicon-based OLED screen. Then, the lifting component 41 of the retraction mechanism 4 is activated. The specific action logic is as follows: the first motor 411 inside the storage box 2 is activated, and its output shaft synchronously drives the first gear 412 and the first threaded rod 413 fixed on the same axis to rotate. The first threaded rod 413, through the threaded engagement with the housing of the naked-eye 3D corner screen body 3, combined with the vertical limit of the screen body by the rear guide rod 414, drives the naked-eye 3D corner screen body 3, which is spliced ​​from silicon-based OLED small displays, to rise in a straight line at a uniform speed and gradually leave the sealed protective space of the storage box 2. At the same time, the first gear 412 drives the second gear 415 to rotate in the opposite direction through meshing transmission, so that the second threaded rod 416 fixed inside the second gear 415 rotates synchronously. The second threaded rod 416, through the double constraint of the threaded engagement with the front guide rod 418, drives the guide plate 417 to move from top to bottom in the vertical direction, forming an intersecting motion trajectory with the naked-eye 3D corner screen body 3. During the movement of the guide plate 417, two T-shaped sliders 419 fixed on its inner side slide along the grooves of the main body 3 of the naked-eye 3D corner screen, ensuring that the guide plate 417 and the screen body remain vertically aligned and avoiding scratches on the edge of the silicon-based OLED screen. During this process, the guide plate 417 drives the mounting box 422 of the cleaning component 42 to move synchronously via the connecting frame 421, activating multiple electric fans 423 inside the mounting box 422. As the electric fans 423 rotate, they generate directional airflow to blow away outdoor dust and sand particles adhering to the surface of the silicon-based OLED screen, preventing scratches during subsequent operations. Simultaneously, flexible brushes 424 fixed to the outer side of their blades rotate synchronously, gently wiping the screen surface. The flexible material is adapted to the fragile light-emitting layer of the silicon-based OLED, preventing hard scratches. This design achieves "simultaneous screen unfolding / storage and cleaning," removing outdoor contaminants before the silicon-based OLED screen is activated and isolating dust before storage, forming initial protection throughout the entire process. Due to their high pixel density and precise driving circuitry, silicon-based OLED splicing screens are prone to localized faults such as driver chip failure and encapsulation layer aging in individual small displays, requiring targeted handling by maintenance mechanism 5. When a small silicon-based OLED display in the naked-eye 3D corner screen body 3 exhibits display abnormalities such as bright spots or black screens, the screen-retrieving component 51 of maintenance mechanism 5 is activated: First, the second motor 512 is started, and its output shaft drives the third gear 513 to roll along the first rack 514 fixed to the inner wall of the guide plate 417, causing the mounting frame 511 to move laterally along the outer side of the guide plate 417; simultaneously, in coordination with the start and stop control of the lifting component 41, the screen-retrieving component 51 is precisely moved to the front of the faulty screen in the "horizontal + vertical" two-dimensional coordinate system, completing the repair of the silicon-based OLED fault. The fault unit is located, and after positioning, multiple electric telescopic rods 515 at the rear end of the mounting bracket 511 are activated. Their output shafts push the vacuum suction cup 516 closer to the surface of the faulty screen. The pressure sensor built into the electric telescopic rod 515 monitors the contact pressure in real time to prevent excessive pressure from squeezing the encapsulation structure of the silicon-based OLED screen. At the same time, the universal coupling between the vacuum suction cup 516 and the output shaft of the electric telescopic rod 515 can adapt to the curvature of the curved silicon-based OLED screen at the external angle of the naked-eye 3D corner screen body 3, ensuring that the suction cup and the screen surface form a complete sealed cavity. When the suction force of the vacuum suction cup 516 reaches the safe removal threshold of the silicon-based OLED screen, the output shaft of the electric telescopic rod 515 retracts in the opposite direction, smoothly pulling the faulty small display screen out of the splicing structure, avoiding pulling on the flexible circuit board of the silicon-based OLED during disassembly. After the faulty screen is removed, the adjustment component 52 of the maintenance mechanism 5 is activated to adapt to the testing requirements of the precision components at the rear end of the silicon-based OLED screen: the fourth motor 523 on one side of the support frame 521 is activated, and its output shaft drives the third threaded rod 522 connected to the inner side to rotate. The bidirectional symmetrical thread on the outer side of the third threaded rod 522, together with the guide constraint of the clamping rod 527 on the first moving block 524, drives the two first moving blocks 524 and the second moving block 525 fixed at the lower end to open or close synchronously. Then, the second moving block 525 drives the limit frame 5211 to adjust the spacing, so that the testing component 53 can adapt to the core components of different sizes such as the drive board and ribbon cable interface at the rear end of the silicon-based OLED screen. After the adjustment component 52 completes the spacing adaptation, the detection component 53 is activated to perform special testing on silicon-based OLEDs: First, multiple sixth motors 535 at the lower end of the arc-shaped clamp 531 are activated, and their output shafts drive the corresponding fifth gears 534 on the inner side of the arc-shaped clamp 531 to rotate. The multiple fifth gears 534 mesh in coordination to drive the arc-shaped rack 532 to slide along the inner side of the arc-shaped clamp 531. The limiting plates 533 at the upper and lower ends of the arc-shaped rack 532 can prevent displacement due to vibration during the sliding process, adapting to the high precision requirements of silicon-based OLED testing. The two arc-shaped clamps 531 move synchronously, surrounding the faulty silicon-based OLED screen from both sides. The arc structure fits the corner contour of the silicon-based OLED screen to ensure no blind spots in the detection. At this time, the positioning probe 536 on the inner wall of the arc-shaped clamp 531 is activated to accurately identify key detection areas such as the solder joints of the silicon-based OLED driver chip and the edge of the encapsulation layer, providing a coordinate reference for subsequent testing. After positioning is completed, the seventh motor 539 on the upper end of the moving frame 537 is started. Its output shaft drives the sixth gear 538 to rotate. The sixth gear 538 drives the moving frame 537 to move smoothly along the arc rack 532 through meshing transmission. At the same time, the industrial camera 5310 on one side of the moving frame 537 scans and inspects the back end of the silicon-based OLED screen. The focus is on capturing the solder joint marks of the silicon-based OLED driver chip, the damage of the flexible cable, and the aging cracks of the encapsulation layer, thus completing the initial fault diagnosis. To achieve comprehensive testing, the fifth motor 528 on the other side of the support frame 521 is activated. Its output shaft drives the clamping rod 527 to rotate. The clamping rod 527 drives the worm gear 526 to rotate through sliding engagement with the worm gear 526. The worm gear 526 drives the fourth gear 5210 inside the third moving block 529 to rotate, which in turn drives the fourth threaded rod 5212 to rotate within the limit frame 5211. The fourth threaded rod 5212, through threaded engagement with the limit frame 5211, guides the connecting block 5213 and the connected testing component 53 to move longitudinally along the silicon-based OLED screen, achieving comprehensive maintenance and testing of the core components and organic light-emitting diodes of each spliced ​​silicon-based OLED display, accurately locating fault points to support subsequent repair work. After maintenance, the screen retrieval component 51 resets and installs the repaired silicon-based OLED small display screen, and the lifting component 41 moves in the opposite direction to drive the naked-eye 3D corner screen body 3 back into the storage box 2. During this process, the cleaning component 42 starts again to perform a second cleaning on the reset screen body. The sealed structure of the storage box 2 provides dustproof and rainproof outdoor static protection for the silicon-based OLED screen body, ensuring the stability of the equipment in non-working state.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-protection display screen and its components, comprising a trolley (1), characterized in that: The upper end of the trolley (1) is fixedly connected to a storage box (2). The storage box (2) is equipped with a naked-eye 3D corner screen body (3) inside. The naked-eye 3D corner screen body (3) is composed of multiple small display screens spliced ​​together. The storage box (2) is equipped with a screen retraction mechanism (4) for adjusting the screen. The retraction mechanism (4) includes a lifting component (41) for adjusting the screen position. The retraction mechanism (4) includes a cleaning component (42) for cleaning the screen. The storage box (2) is equipped with a maintenance mechanism (5) for maintaining the screen. The maintenance mechanism (5) includes a screen picking component (51) for adsorbing a specified small display screen, an adjustment component (52) for switching the height, and a detection component (53) for detecting the status of the small display screen chassis. The adjustment assembly (52) includes a support frame (521) fixedly connected to the mounting bracket (511). A third threaded rod (522) is rotatably connected to the inner side of the support frame (521). Two mutually symmetrical threads are provided on the outer side of the third threaded rod (522). A fourth motor (523) is installed on one side of the support frame (521). The output shaft of the fourth motor (523) is fixedly connected to the third threaded rod (522). Two first moving blocks (524) are threadedly connected to the outer side of the third threaded rod (522). A second moving block (525) is fixedly connected to the lower end of the first moving block (524). The inner side of the second moving block (525) is rotatably connected to a worm gear (526), ​​and the inner sides of the two worm gears (526) are slidably connected to a locking bar (527). The locking bar (527) is rotatably connected to the inner side of the support frame (521). The other side of the support frame (521) is equipped with a fifth motor (528), and the output shaft of the fifth motor (528) is fixedly connected to the locking bar (527). The front end of the second moving block (525) is fixedly connected to a third moving block (529). The inner side of the third moving block (529) is rotatably connected to a fourth gear (5210). The worm (526) is meshed with the fourth gear (5210). The lower end of the third moving block (529) is fixedly connected to a limit frame (5211). The inner side of the limit frame (5211) is rotatably connected to a fourth threaded rod (5212). The upper end of the fourth threaded rod (5212) is fixedly connected to the fourth gear (5210). The outer side of the fourth threaded rod (5212) is threadedly connected to a connecting block (5213). The connecting block (5213) is slidably connected to the inner side of the limit frame (5211). The detection component (53) includes two mutually symmetrical arc-shaped clamps (531), the outer sides of which are fixedly connected to the connecting block (5213).

2. The multi-protection display screen and its components according to claim 1, characterized in that: The lifting assembly (41) includes a first motor (411) installed inside the storage box (2). The output shaft of the first motor (411) is fixedly connected to a first gear (412). The upper end of the first gear (412) is fixedly connected to a first threaded rod (413). The outer side of the first threaded rod (413) is threadedly connected to the housing of the naked-eye three-dimensional corner screen body (3). The lifting assembly (41) also includes a rear guide rod (414) slidably connected to the inner side of the housing of the naked-eye three-dimensional corner screen body (3).

3. The multi-protection display screen and its components according to claim 2, characterized in that: The outer side of the first gear (412) is meshed with a second gear (415), the inner side of the second gear (415) is fixedly connected with a second threaded rod (416), the lower end of the second threaded rod (416) is rotatably connected to the storage box (2), the outer side of the second threaded rod (416) is threadedly connected with a guide plate (417), the inner side of the guide plate (417) is slidably connected with a front guide rod (418), the lower end of the front guide rod (418) is fixedly connected to the storage box (2), the inner side of the guide plate (417) is fixedly connected with two T-shaped sliders (419), and the T-shaped sliders (419) are slidably connected to the inner side of the housing of the naked-eye three-dimensional corner screen body (3).

4. The multi-protection display screen and its components according to claim 1, characterized in that: The cleaning assembly (42) includes two connecting frames (421), one side of which is fixedly connected to a guide plate (417), and the other side of the two connecting frames (421) is fixedly connected to a mounting box (422). Multiple electric fans (423) are installed inside the mounting box (422), and flexible brushes (424) are fixedly connected to the outer side of the blades of the electric fans (423).

5. A multi-protection display screen and its components according to claim 1, characterized in that: The screen-grabbing assembly (51) includes a mounting bracket (511) slidably connected to the outside of the guide plate (417). A second motor (512) is mounted on the upper end of the mounting bracket (511). A third gear (513) is fixedly connected to the output shaft of the second motor (512). A first rack (514) is meshed with the outside of the third gear (513). The first rack (514) is fixedly connected to the inner wall of the guide plate (417). A plurality of electric telescopic rods (515) are mounted on the rear end of the mounting bracket (511). A pressure sensor is provided on the inner side of the electric telescopic rod (515). A vacuum suction cup (516) is fixedly connected to the output shaft of the electric telescopic rod (515) through a universal coupling.

6. The multi-protection display screen and its components according to claim 1, characterized in that: An arc-shaped rack (532) is slidably connected to the inner side of the arc-shaped clamp (531). Limit plates (533) are fixedly connected to both the upper and lower ends of the arc-shaped rack (532). Multiple fifth gears (534) are rotatably connected to the inner side of the arc-shaped clamp (531). The multiple fifth gears (534) mesh with the arc-shaped rack (532). Multiple sixth motors (535) are installed at the lower end of the arc-shaped clamp (531). The output shafts of the sixth motors (535) are respectively connected to a corresponding fifth gear above. (534) Fixed connection, the inner wall of the arc-shaped clamp (531) is equipped with a positioning probe (536), the outer side of the arc-shaped rack (532) is slidably connected with a moving frame (537), the upper end of the moving frame (537) is equipped with a seventh motor (539), the output shaft of the seventh motor (539) is fixedly connected with a sixth gear (538), the outer side of the sixth gear (538) is meshed with the arc-shaped rack (532), and an industrial camera (5310) is installed on one side of the moving frame (537).

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