An LED digital display screen with light leakage protection

Abstract

This invention relates to the field of LED display technology, and more particularly to an LED digital display with light leakage protection. It includes: a frame, on which uniformly distributed mounting frames are arranged. Mounting frames near one vertical edge and one horizontal edge of the frame are magnetically attracted to each other. Mounting components are fixedly connected to the remaining mounting frames, except for those magnetically attracted to the frame. Sliding posts are slidably connected within each mounting component, and two symmetrically distributed arc-shaped connecting rods are hinged to the sliding posts. The arc-shaped connecting rods are hinged to positioning posts slidably connected to the mounting components. This invention uses a portion of the mounting frames corresponding to one horizontal edge and one vertical edge of the frame as a reference, allowing the remaining mounting frames to quickly eliminate the step difference between adjacent mounting frames by moving the two mutually perpendicular positioning posts. This reduces the number of times the magnets in the mounting frames need adjustment, thereby reducing operation steps and improving installation efficiency.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more particularly to an LED digital display with light leakage protection. Background Technology

[0002] LED displays are electronic devices that use an array of light-emitting diodes for imaging. Due to their high brightness, wide viewing angle, and long lifespan, they are widely used in outdoor advertising and other fields. In actual assembly, these displays are typically composed of several display modules spliced ​​together and often magnetically fixed to a steel frame. However, due to limitations in the welding precision of the steel frame, the frame surface is often difficult to achieve a completely flat surface, resulting in a step difference between adjacent display modules, preventing them from forming a flat plane. This step difference not only ruins the overall appearance of the screen but also causes image fragmentation, edge light leakage, and affects the structure's sealing and stability. To solve the step difference problem, the current installation process often requires repeated adjustments to the height relationship between the magnets and the display modules. This process is cumbersome, inefficient, and affects installation efficiency. Summary of the Invention

[0003] This invention provides an LED digital display screen with light leakage protection to overcome the shortcomings of cumbersome operation and low efficiency in the installation of LED displays.

[0004] Technical Solution: An LED digital display screen with light leakage protection, comprising: a frame, on which uniformly distributed mounting frames are disposed, LED modules are mounted on the mounting frames, and face shields are mounted on the LED modules to block side light from the LED beads; the mounting frames near one vertical edge and the mounting frames near one horizontal edge of the frame are magnetically attracted to each other; and mounting members are fixedly connected to the remaining mounting frames except for the mounting frames magnetically attracted to the frame, with sliding connections within the mounting members. The mounting frame has a sliding column, which is hinged to two symmetrically distributed arc-shaped connecting rods. Each arc-shaped connecting rod is hinged to a positioning column that is slidably connected to the mounting component. The end of the positioning column away from the adjacent mounting component has a frustum portion. The mounting component is fixedly connected to two symmetrically distributed limiting columns. The limiting columns contact the adjacent arc-shaped connecting rods and are used to limit the extreme position of the arc-shaped connecting rods' swing. Positioning blocks are fixedly connected to the mounting frame near, but not on, the positioning columns. Each positioning block has a through hole for the adjacent positioning columns to pass through.

[0005] Furthermore, magnetic plates are fixed to both ends of the sliding column, and two magnetic absorbing plates are fixed to the mounting member. The magnetic plates are used to magnetically attract adjacent magnetic absorbing plates to limit the position of the sliding column within the adjacent mounting member.

[0006] Furthermore, the positioning post has two guide ramps at one end near the adjacent mounting component, and an elastic post is fixedly connected to the position where the arc-shaped connecting rod is hinged to the adjacent positioning post. The positioning post has two symmetrically distributed hinge holes near the elastic post, and the guide ramps are used to guide the adjacent elastic post to deform and enter the hinge holes of the positioning post.

[0007] Furthermore, evenly distributed mounting blocks are fixedly fixed to the mounting frame that is fixed to the mounting component. A fixing component is fixedly fixed inside the mounting block. A sliding rod is slidably connected to the fixing component. An abutment plate is provided on the side of the sliding rod near the frame. The abutment plate is used to abut against the frame. An insert is slidably connected to the fixing component. The insert is used to embed into the adjacent sliding rod to limit the adjacent sliding rod. An elastic arc plate is fixedly connected to the end of the insert away from the adjacent sliding rod.

[0008] Furthermore, the fixing member is provided with a sliding groove near the adjacent elastic arc sheet, and both sides of the elastic arc sheet are provided with arc-shaped portions, which slide within the adjacent sliding groove.

[0009] Furthermore, the mounting block and the adjacent fixing member are slidably connected by a first magnetic ring, which is used to compress the adjacent elastic arc sheet. A tension spring is fixed between the first magnetic ring and the adjacent mounting block. A magnetic suction ring is fixed to the side of the fixing member away from the adjacent abutment plate. There is a magnetic attraction between the first magnetic ring and the adjacent magnetic suction ring, and they are used together to limit the position of the insert.

[0010] Furthermore, a sliding cylinder is fitted onto the sliding rod near the abutment plate, and a second magnetic ring is fixedly connected to the sliding cylinder. The second magnetic ring attracts the first magnetic ring. A rubber ring is fitted onto the sliding rod, and the rubber ring contacts the sliding cylinder and is located between the sliding cylinder and the abutment plate. The rubber ring is used to limit the relative position of the sliding cylinder and the abutment plate.

[0011] Furthermore, the second magnetic ring is fixed with a silicone sleeve, which is used to contact the frame.

[0012] Furthermore, an elastic element is fixedly connected between the sliding rod and the abutment plate. The end of the sliding rod near the abutment plate is hemispherical. The sliding rod contacts the abutment plate. A frustum-shaped through hole is provided in the middle of the sliding cylinder.

[0013] Furthermore, a spring is fixed between the second magnetic ring and the adjacent mounting block.

[0014] Compared with the prior art, the present invention has the following advantages: The present invention uses the part of the mounting frame corresponding to the lower horizontal edge and the left vertical edge of the frame as a reference, so that the remaining mounting frames can quickly eliminate the step difference between two adjacent mounting frames by means of the movement of two mutually perpendicular positioning posts on them. This reduces the number of times the magnets in the mounting frames need to be adjusted, thereby reducing the operation steps and improving the installation efficiency.

[0015] By relying on the insert strip to limit the sliding rod, the contact plate can still be in contact with the frame even when the frame welding precision is low, thus enhancing the stability of the mounting frame on the frame.

[0016] The sliding rod is connected to the abutment plate by an elastic element, which allows the abutment plate to swing relative to the sliding rod, thereby adapting to the unevenness of the frame and ensuring stable contact between the abutment plate and the frame. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the mounting frame and face mask of the present invention; Figure 3 This is a three-dimensional structural diagram of the mounting component and mounting block of the present invention; Figure 4 This is a three-dimensional structural diagram of the sliding column and positioning column of the present invention; Figure 5 This is a three-dimensional structural diagram of the arc-shaped connecting rod and positioning post of the present invention; Figure 6 This is a three-dimensional structural diagram of the arc-shaped connecting rod and the elastic column of the present invention; Figure 7 This is a three-dimensional structural diagram of the fixing component and sliding rod of the present invention; Figure 8 This is a three-dimensional structural cross-sectional view of the mounting block and sliding cylinder of the present invention; Figure 9 Appendix to this invention Figure 8 Enlarged view of point A in the middle.

[0018] The meanings of the reference numerals in the diagram are as follows: 1-Frame, 2-Mounting frame, 3-LED module, 4-Face mask, 5-Mounting component, 6-Sliding column, 7-Arc-shaped connecting rod, 701-Elastic column, 8-Positioning column, 801-Guide slope, 9-Limiting column, 10-Positioning block, 11-Magnetic sheet, 12-Magnetic suction sheet, 13-Mounting block, 14-Fixing component, 15-Sliding rod, 16-Abutting plate, 17-Inlay strip, 18-Elastic arc sheet, 181-Sliding groove, 182-Arc-shaped part, 19-First magnetic ring, 20-Tension spring, 21-Magnetic suction ring, 22-Sliding cylinder, 23-Second magnetic ring, 24-Rubber ring, 25-Silicone sleeve, 26-Elastic component, 27-Spring. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention. Example

[0021] This embodiment provides an LED digital display screen with light leakage protection to solve the problems of cumbersome operation and low efficiency in the installation of LED displays.

[0022] See Figures 1 to 5 An LED digital display screen with light leakage protection includes: a frame 1, which is welded from a steel structure; uniformly distributed mounting frames 2 are provided on the frame 1, with the sides of two adjacent mounting frames 2 in contact with each other; all mounting frames 2 located on the left and lower sides of the frame 1 are directly attached to the frame 1 by magnets, thus providing a reference for the remaining mounting frames 2; LED modules 3 are mounted on the mounting frames 2, and face shields 4 are mounted on the LED modules 3. The face shields 4 are made of mesh opaque material to separate two adjacent LED beads on the LED modules 3, thus blocking the side light of the LED beads and making the image cleaner; the mounting frames 2 near the left vertical edge of the frame 1 and the mounting frames 2 near the lower horizontal edge of the frame 1 are magnetically attracted to the frame 1; the lower left part of the remaining mounting frames 2, except for the mounting frames 2 magnetically attracted to the frame 1, is fixedly connected to the mounting parts; a sliding column 6 is slidably connected inside the mounting parts 5, and the sliding column 6 is hinged to... Two symmetrically distributed arc-shaped connecting rods 7 are hinged to positioning pins 8 that are slidably connected to the mounting component 5. The central axes of the two positioning pins 8 within the same mounting component 5 intersect and are perpendicular. A frustum is provided at the end of the positioning pin 8 away from the adjacent mounting component 5. Two symmetrically distributed limiting pins 9 are fixed to the mounting component 5. The limiting pins 9 contact the adjacent arc-shaped connecting rods 7 and are used to limit the extreme position of the swing of the arc-shaped connecting rods 7. Positioning blocks 10 are fixed to the mounting frame 2 near the adjacent positioning pins 8. The positioning blocks 10 are provided with through holes for the adjacent positioning pins 8 to pass through. The maximum diameter of the positioning pin 8 is equal to the inner diameter of the through hole on the positioning block 10. As the frustum of the positioning pin 8 moves into the through hole of the corresponding positioning block 10, it will drive the adjacent mounting frame 2 to move to the left, down, and forward and backward. Finally, when the maximum diameter of the positioning pin 8 enters the through hole of the positioning block 10, the alignment adjustment of the mounting frame 2 is completed.

[0023] The above setup enables the remaining mounting frames 2, with the lower horizontal edge and left vertical edge of frame 1 as references, to quickly eliminate the step difference between two adjacent mounting frames 2 by moving the two mutually perpendicular positioning posts 8 on them. This reduces the number of times the magnets in the mounting frames 2 need to be adjusted, thereby reducing the number of operation steps and improving installation efficiency.

[0024] See Figure 4 and Figure 5 Both ends of the sliding column 6 are fixed with magnetic sheets 11, which are made of magnets. The mounting part 5 is fixed with two magnetic absorbing sheets 12, which are made of ferromagnetic material. The magnetic sheets 11 are used to magnetically attract adjacent magnetic absorbing sheets 12 to limit the position of the sliding column 6 within the adjacent mounting part 5.

[0025] See Figure 5 and Figure 6 Two guide ramps 801 are provided at one end of the positioning post 8 near the adjacent mounting part 5. An elastic post 701 is fixed at the hinge position of the arc-shaped connecting rod 7 and the adjacent positioning post 8. Two symmetrically distributed hinge holes are provided at the position of the positioning post 8 near the elastic post 701. The guide ramps 801 are used to guide the deformation of the adjacent elastic post 701 to enter the hinge hole of the positioning post 8. When assembling the mounting part 5, sliding post 6, arc-shaped connecting rod 7, positioning post 8 and limiting post 9, first install the limiting post 9 and arc-shaped connecting rod 7 to the corresponding position of sliding post 6. Then place the assembled sliding post 6 into the mounting part 5. Then insert the positioning post 8 into the mounting part 5 and make the guide ramps 801 contact the corresponding elastic post 701 and squeeze the elastic post 701 to deform, so that the end of the arc-shaped connecting rod 7, together with the elastic post 701, moves to the hinge hole of the positioning post 8, thus completing the installation of the arc-shaped connecting rod 7 and the positioning post 8.

[0026] LED display installation process: Vertically fix frame 1 to the installation position. Then, using magnets, install mounting frames 2 sequentially on the left and bottom sides of frame 1 (mounting frames 2, LED modules 3, and faceplate 4 are pre-assembled as one unit). Adjust the mounting frames 2 on the left and bottom sides of frame 1 to be coplanar. Then, using a left-to-right and bottom-to-top installation sequence, install each mounting frame 2 with mounting parts 5 onto frame 1. Detailed installation steps are attached (see appendix). Figure 1(Taking a 4x4 arrangement as an example): Place the mounting frame 2 in two columns and two rows, roughly aligning it with the two adjacent mounting frames 2 below and to its left. Then, use a magnet to drive the sliding column 6 backward. The sliding column 6 drives the two magnetic pieces 11 on it to move backward, causing the front magnetic piece 11 to lose contact with the adjacent magnetic piece 12 and gradually move away. The sliding column 6 pushes the two positioning columns 8 outward from the mounting part 5 through the arc-shaped connecting rod 7. The two positioning columns 8 move into the through holes of the corresponding positioning blocks 10. During the movement, the positioning... The frustum of the positioning post 8 first contacts the edge of the through hole of the positioning block 10. During this process, the frustum of the horizontally placed positioning post 8 drives the adjacent mounting frame 2 to move downward, and the frustum of the vertically placed positioning post 8 drives the adjacent mounting frame 2 to move to the left. Both frustums of the positioning posts 8 drive the adjacent mounting frames 2 to move in the front-back direction. Finally, when the maximum diameter of the positioning post 8 moves into the through hole of the corresponding positioning block 10, the mounting frame 2 contacts and is coplanar with the mounting frames 2 on its lower side and its left side, thus realizing the rapid installation of the mounting frame 2.

[0027] When the maximum diameter of the positioning post 8 enters the through hole of the corresponding positioning block 10, the magnetic plate 11 on the rear side of the sliding post 6 contacts the corresponding magnetic suction plate 12. The magnetic attraction between the magnetic plate 11 and the corresponding magnetic suction plate 12 keeps the relative position of the sliding post 6 and the adjacent mounting piece 5 unchanged. Repeat the above steps until all mounting frames 2 are spliced. After a single mounting frame 2 is damaged, use a magnet to drive the sliding post 6 on the corresponding mounting frame 2 to move forward. Repeat the above steps of moving the sliding post 6 backward to make the two positioning posts 8 corresponding to the damaged mounting frame 2 retract into the corresponding mounting piece 5. Then use a magnet to drive the positioning posts 8 on the right and top sides of the damaged mounting frame 2 to retract respectively. Use a suction cup to remove the damaged mounting frame 2 and replace it with a new mounting frame 2. Example

[0028] This embodiment is a further optimization based on embodiment 1 to enhance the stability of the mounting frame 2 on the frame 1.

[0029] See Figure 3 and Figures 7 to 9 Each mounting frame 2, which is fixed to mounting component 5, has four evenly distributed mounting blocks 13 fixed to it. The remaining mounting frames 2 are fixed to the frame 1 by magnets, as is the case in the prior art. A fixing component 14 is fixed inside the mounting block 13. The fixing component 14 is slidably connected to a sliding rod 15. The rear end of the sliding rod 15 is provided with an abutment plate 16, which is used to abut against the frame 1. The fixing component 14 is slidably connected to an insert strip 17, which is used to embed into adjacent sliding rods 15 to limit the adjacent sliding rods 15. The sliding rod 15 is made of polyetheretherketone (PEEK), which has high strength and can also be cut into grooves by the insert strip 17. An elastic arc sheet 18 is fixed to the end of the insert strip 17 away from the adjacent sliding rod 15. The elastic arc sheet 18 is made of elastic metal.

[0030] The above setup enables the sliding rod 15 to be limited by the insert 17, thus ensuring that the abutment plate 16 can still contact the frame 1 even when the welding precision of the frame 1 is low, thereby enhancing the stability of the mounting frame 2 on the frame 1.

[0031] It should be noted that in this embodiment, the arrangement relationship between the sliding rod 15 and the adjacent abutment plate 16 can be regarded as a fixed connection; the abutment plate 16 itself may be magnetic, so as to actively adhere to the surface of the frame 1.

[0032] See Figure 9 The fixing member 14 is provided with a sliding groove 181 near the adjacent elastic arc plate 18. Both sides of the elastic arc plate 18 are provided with arc-shaped portions 182. The arc-shaped portions 182 slide within the adjacent sliding groove 181, and the arc-shaped portions 182 are completely located within the sliding groove 181 to prevent the first magnetic ring 19 from contacting the arc-shaped portions 182. By relying on the contact between the arc-shaped portions 182 and the sliding groove 181, the resistance to sliding of the elastic arc plate 18 during deformation is reduced.

[0033] See Figure 7 and Figure 8 The mounting block 13 and the adjacent fixing member 14 are slidably connected together by a first magnetic ring 19. The first magnetic ring 19 is made of a magnet and is used to compress the adjacent elastic arc sheet 18. A tension spring 20 is fixed between the first magnetic ring 19 and the adjacent mounting block 13. The tension spring 20 is used to maintain the initial position of the first magnetic ring 19 to maintain the distance between the first magnetic ring 19 and the adjacent elastic arc sheet 18, so that the first magnetic ring 19 can accelerate and quickly compress the adjacent elastic arc sheet 18 with the help of the above-mentioned distance. A magnetic suction ring 21 is fixed to the front side of the fixing member 14. The magnetic suction ring 21 is made of ferromagnetic material. There is a magnetic attraction between the first magnetic ring 19 and the adjacent magnetic suction ring 21 and they are used together to limit the position of the insert 17.

[0034] After the mounting frame 2 is aligned and adjusted, the fixing process is as follows: The abutment plate 16 contacts the frame 1 under the action of magnetism. The magnet drives the first magnetic ring 19 at the four corners of the mounting frame 2 to move forward, stretching the tension spring 20. During the forward movement, the first magnetic ring 19 contacts the adjacent elastic arc plate 18 and squeezes the elastic arc plate 18 to deform, causing the two arc-shaped parts 182 on the elastic arc plate 18 to move away from each other. The elastic arc plate 18 squeezes the adjacent insert 17 to move. The insert 17 gradually approaches the adjacent sliding rod 15. Finally, when the first magnetic ring 19 contacts the front part of the fixing member 14, the elastic arc plate 18 no longer deforms. One end of the insert 17 is embedded in the adjacent sliding rod 15 and limits the sliding rod 15. At this time, the magnetic attraction between the first magnetic ring 19 and the adjacent magnetic ring 21 is greater than the tension of the tension spring 20. The first magnetic ring 19 remains stationary under the action of magnetic attraction.

[0035] When replacing a portion of the mounting frame 2, first repeat the steps of embodiment 1, then use a magnet to drive the four first magnetic rings 19 on the mounting frame 2 to move backward and reset. At this time, the insert 17 is reset under the elastic action of the adjacent elastic arc plate 18 and the limit on the adjacent sliding rod 15 is released. This can reduce the resistance that the mounting frame 2 needs to overcome to move forward, making it easier to remove the mounting frame 2 using a suction cup. Example

[0036] This embodiment is a further optimization based on embodiment 2, so as to facilitate the adjustment of the position of the mounting frame 2 by the positioning column 8.

[0037] See Figure 7 and Figure 8 The sliding rod 15 is fitted with a sliding cylinder 22 at its rear. The sliding cylinder 22 is fixedly connected to a second magnetic ring 23, which is made of a magnet. The second magnetic ring 23 attracts the first magnetic ring 19. The sliding rod 15 is fitted with a rubber ring 24, which contacts the sliding cylinder 22 and is located between the sliding cylinder 22 and the abutment plate 16. The rubber ring 24 is used to limit the relative position of the sliding cylinder 22 and the abutment plate 16.

[0038] When the mounting frame 2 is stored alone, the second magnetic ring 23 is only subject to the magnetic attraction between it and the first magnetic ring 19 (described with the state of each part in the attached figure as the initial state). At this time, the resultant force on the second magnetic ring 23 is forward, causing the second magnetic ring 23 to move forward. Finally, the second magnetic ring 23 is kept stationary by the support force of the mounting block 13.

[0039] After the mounting frame 2 is placed in the corresponding position of the frame 1, the second magnetic ring 23 is not only subject to the magnetic attraction between itself and the first magnetic ring 19, but also to the magnetic attraction between itself and the frame 1. In this state, the magnetic attraction between the second magnetic ring 23 and the frame 1 is greater than the magnetic attraction between the second magnetic ring 23 and the first magnetic ring 19. The resultant force on the second magnetic ring 23 is backward, causing the second magnetic ring 23 to press against the abutment plate 16 and fit against the frame 1. At this point, the abutment plate 16, the sliding rod 15 and the rubber ring 24 stop moving. The rubber ring 24 provides support for the sliding cylinder 22 and the second magnetic ring 23, making the resultant force on the second magnetic ring 23 zero. In this state, the support force provided by the rubber ring 24 is less than the force that needs to be overcome to deform the rubber ring 24.

[0040] When the first magnetic ring 19 moves forward, the magnetic attraction between the second magnetic ring 23 and the first magnetic ring 19 decreases. In this state, the maximum support force that the rubber ring 24 can provide to the sliding cylinder 22 is insufficient to keep the second magnetic ring 23 in a fixed position. The resultant force on the second magnetic ring 23 moves backward, causing the second magnetic ring 23 to drive the sliding cylinder 22 to move backward and pass over the rubber ring 24.

[0041] It should be noted that in this embodiment, the abutment plate 16 is not magnetic. The abutment plate 16 and the frame 1 are adhered to each other by the magnetic attraction between the second magnetic ring 23 and the frame 1.

[0042] The above setup enables the magnetic attraction between the second magnetic ring 23 and the frame 1 to ensure the fit between the abutment plate 16 and the frame 1, and the rubber ring 24 to limit the distance between the second magnetic ring 23 and the frame 1, thereby limiting the compressive force between the abutment plate 16 and the frame 1. This facilitates the movement of the mounting frame 2 relative to the frame 1 under the action of the positioning post 8. After the alignment adjustment of the mounting frame 2 is completed, the second magnetic ring 23 overcomes the limitation of the rubber ring 24 and moves closer to the frame 1, thus increasing the compressive force between the abutment plate 16 and the frame 1 and enhancing the stability of the mounting frame 2. Example

[0043] This embodiment is a further optimization based on embodiment 3, further enhancing the stability of the mounting frame 2.

[0044] See Figure 7 and Figure 8 The second magnetic ring 23 is fixed with a silicone sleeve 25. The thickness of the silicone sleeve 25 is greater than the thickness of the abutment plate 16. The silicone sleeve 25 is used to contact the frame 1. After the second magnetic ring 23 overcomes the limiting effect of the rubber ring 24, the silicone sleeve 25 can directly contact the frame 1 under the compression of the second magnetic ring 23. This generates friction between the silicone sleeve 25 and the frame 1, enhancing the stability of the mounting frame 2.

[0045] It should be noted that in this embodiment, the surface of the abutment plate 16 is smooth, which reduces the coefficient of friction between the abutment plate 16 and the frame 1, thus facilitating the alignment and adjustment of the mounting frame 2. Example

[0046] This embodiment is a further optimization based on embodiment 4 to improve adaptability to the shape of frame 1.

[0047] See Figure 7 and Figure 8 An elastic element 26 is fixed between the sliding rod 15 and the abutment plate 16. The elastic element 26 is made of rubber. The rear end of the sliding rod 15 is hemispherical and makes point contact with the abutment plate 16. A frustum-shaped through hole is provided in the middle of the sliding cylinder 22. The frustum-shaped through hole of the sliding cylinder 22 is used to allow the second magnetic ring 23 to deflect relative to the sliding rod 15 under the limiting effect of the rubber ring 24, so as to ensure that the rear circumference of the silicone sleeve 25 can fit with the frame 1.

[0048] The above configuration enables the sliding rod 15 to be connected to the abutment plate 16 by the elastic element 26, so that the abutment plate 16 can swing relative to the sliding rod 15, thereby adapting to the uneven state of the frame 1 and making the abutment plate 16 stably abut against the frame 1. Example

[0049] This embodiment is a further optimization based on embodiment 5, to improve the ease of removing the mounting frame 2.

[0050] See Figure 7 and Figure 8 A spring 27 is fixed between the second magnetic ring 23 and the adjacent mounting block 13. The spring 27 is in a compressed and stored state.

[0051] When the mounting frame 2 is stored separately, the second magnetic ring 23 is subjected to the magnetic attraction between itself and the first magnetic ring 19, as well as the elastic force of the spring 27. At this time, the backward elastic force on the second magnetic ring 23 is greater than the forward magnetic attraction, that is, the second magnetic ring 23 drives the sliding rod 15 to move backward under the action of the elastic force of the spring 27, thereby increasing the distance between the second magnetic ring 23 and the first magnetic ring 19.

[0052] After the mounting frame 2 is placed in the corresponding position of the frame 1, a magnetic attraction force is generated between the second magnetic ring 23 and the frame 1. In this state, under the action of the elastic force of the spring 27 and the magnetic attraction force between the second magnetic ring 23 and the frame 1, the second magnetic ring 23 drives the sliding rod 15 and the abutment plate 16 to move backward through the sliding cylinder 22 and the rubber ring 24, so that the abutment plate 16 fits against the frame 1. Subsequently, the abutment plate 16, the sliding rod 15 and the rubber ring 24 are stationary. The rubber ring 24 provides a forward supporting force for the second magnetic ring 23. The supporting force provided by the rubber ring 24 is still less than the force that needs to be overcome to deform the rubber ring 24.

[0053] When the first magnetic ring 19 moves forward, the maximum supporting force that the rubber ring 24 can provide to the sliding cylinder 22 is insufficient to keep the second magnetic ring 23 in a fixed position. The resultant force on the second magnetic ring 23 is backward and greater than the force that needs to be overcome to deform the rubber ring 24. This causes the second magnetic ring 23 to drive the sliding cylinder 22 to move backward and pass over the rubber ring 24 until the silicone sleeve 25 contacts the frame 1. Then, the frame 1 provides supporting force to the second magnetic ring 23 through the silicone sleeve 25, making the resultant force on the second magnetic ring 23 zero.

[0054] During the process of adjusting the position of the mounting frame 2 by the positioning post 8, when the positioning post 8 moves the mounting frame 2 forward and backward, it will change the distance between the mounting frame 2 and the frame 1, that is, change the compression length of the spring 27. When removing a part of the mounting frame 2, the spring 27 can actively push the mounting frame 2 forward under its own elastic force, so that the mounting frame 2 pops out from the plane composed of all the mounting frames 2, and the mounting frame 2 can be removed without the use of suction cups or other tools.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. An LED digital display screen with light leakage protection, comprising: A frame (1) is provided with uniformly distributed mounting frames (2), and LED modules (3) are mounted on the mounting frames (2). The LED modules (3) are characterized by having a face shield (4) mounted on them, which is used to block the side light from the LED beads. The mounting frames (2) near one vertical edge and one horizontal edge of the frame (1) are magnetically attracted to each other. Except for the mounting frames (2) magnetically attracted to the frame (1), the remaining mounting frames (2) are fixedly connected with mounting components (5). A sliding column (6) is slidably connected within the mounting component (5). The column (6) is hinged to two symmetrically distributed arc-shaped connecting rods (7), and the arc-shaped connecting rods (7) are hinged to a positioning post (8) that is slidably connected to the mounting member (5). The positioning post (8) has a frustum at one end away from the adjacent mounting member (5). The mounting member (5) is fixed to two symmetrically distributed limiting posts (9). The limiting posts (9) contact the adjacent arc-shaped connecting rods (7) and are used to limit the extreme position of the swing of the arc-shaped connecting rods (7). The mounting frame (2) is fixed to a positioning block (10) at a position close to but not above the positioning post (8). The positioning block (10) is provided with a through hole for the adjacent positioning post (8) to pass through.

2. The LED digital display screen with light leakage protection according to claim 1, characterized in that, Both ends of the sliding column (6) are fixed with magnetic plates (11), and the mounting component (5) is fixed with two magnetic plates (12). The magnetic plates (11) are used to magnetically attract the adjacent magnetic plates (12) to limit the position of the sliding column (6) within the adjacent mounting component (5).

3. An LED digital display screen with light leakage protection according to claim 2, characterized in that, The positioning post (8) has two guide ramps (801) at one end near the adjacent mounting member (5). The arc-shaped connecting rod (7) is fixed with an elastic post (701) at the hinge position of the adjacent positioning post (8). The positioning post (8) has two symmetrically distributed hinge holes near the elastic post (701). The guide ramps (801) are used to guide the adjacent elastic post (701) to deform and enter the hinge hole of the positioning post (8).

4. An LED digital display screen with light leakage protection according to claim 3, characterized in that, Mounting blocks (13) are uniformly distributed on the mounting frame (2) which is fixed to the mounting component (5). Fixing components (14) are fixed inside the mounting blocks (13). The fixing components (14) are slidably connected to the sliding rods (15). The sliding rods (15) are provided with abutting plates (16) on the side near the frame (1). The abutting plates (16) are used to abut against the frame (1). The fixing components (14) are slidably connected to the inserts (17). The inserts (17) are used to embed into the adjacent sliding rods (15) to limit the adjacent sliding rods (15). An elastic arc plate (18) is fixed to the end of the inserts (17) away from the adjacent sliding rods (15).

5. An LED digital display screen with light leakage protection according to claim 4, characterized in that, The fixing member (14) is provided with a sliding groove (181) near the adjacent elastic arc plate (18), and an arc-shaped part (182) is provided on both sides of the elastic arc plate (18), and the arc-shaped part (182) slides in the adjacent sliding groove (181).

6. An LED digital display screen with light leakage protection according to claim 5, characterized in that, The mounting block (13) and the adjacent fixing member (14) are connected by a first magnetic ring (19) for limiting sliding. The first magnetic ring (19) is used to press the adjacent elastic arc sheet (18). A tension spring (20) is fixed between the first magnetic ring (19) and the adjacent mounting block (13). A magnetic suction ring (21) is fixed on the side of the fixing member (14) away from the adjacent abutment plate (16). There is a magnetic attraction between the first magnetic ring (19) and the adjacent magnetic suction ring (21) and they are used together to limit the position of the insert (17).

7. An LED digital display screen with light leakage protection according to claim 6, characterized in that, The sliding rod (15) is fitted with a sliding cylinder (22) near the abutment plate (16). The sliding cylinder (22) is fixed with a second magnetic ring (23). The second magnetic ring (23) attracts the first magnetic ring (19). The sliding rod (15) is fitted with a rubber ring (24). The rubber ring (24) contacts the sliding cylinder (22) and is located between the sliding cylinder (22) and the abutment plate (16). The rubber ring (24) is used to limit the relative position of the sliding cylinder (22) and the abutment plate (16).

8. An LED digital display screen with light leakage protection according to claim 7, characterized in that, The second magnetic ring (23) is fixed with a silicone sleeve (25), which is used to contact the frame (1).

9. An LED digital display screen with light leakage protection according to claim 7, characterized in that, An elastic element (26) is fixed between the sliding rod (15) and the abutting plate (16). The end of the sliding rod (15) near the abutting plate (16) is hemispherical. The sliding rod (15) contacts the abutting plate (16). A frustum-shaped through hole is provided in the middle of the sliding cylinder (22).

10. An LED digital display screen with light leakage protection according to claim 8, characterized in that, A spring (27) is fixed between the second magnetic ring (23) and the adjacent mounting block (13).

Images