Back frame for LED display screen

Abstract

The back frame for the LED display screen comprises a base and a frame, a hold-down spring is fixedly connected to the top face in the frame, a hold-down top plate is fixedly connected to the bottom end of the hold-down spring, an insertion plate is slidably connected to the bottom face of the hold-down top plate, an arc-shaped plate is hinged to the bottom end of the insertion plate, an expansion spring is fixedly connected to one side of the arc-shaped plate, and the expansion spring is fixedly connected to the other side of the arc-shaped plate. A protective limiting plate is slidably connected to one side of the frame, a heat dissipation groove is formed in the other side of the frame, a rotating column is fixedly connected to the top end of one side of the frame, a supporting plate is fixedly connected to the top face of the base, a basic groove frame is fixedly connected to the bottom face of the frame, and a telescopic plate is elastically and telescopically connected to the interior of the basic groove frame through a limiting spring. A tooth panel is rotatably connected to the center of the top surface of the base, a limiting groove is formed in the top surface of the tooth panel, and moving rollers are symmetrically and fixedly connected to the bottom surface of the base in four directions; by means of the structure, display screen structures of different specifications can be clamped and installed in the frame, and the universality of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of back frame devices, in particular to a back frame for an LED display screen. Background Technique

[0002] An LED display screen is a display device that uses light-emitting diodes as the display technology and is widely used in fields such as advertising, information display, entertainment, and monitoring. The back frame of an LED display screen refers to a support system specifically used to support and fix the LED display screen.

[0003] The existing Chinese patent document CN212624665U discloses a back frame for an LED display screen, including a back frame body of the LED display screen and a motor. A frame and a base are provided on the back frame body of the LED display screen. A display screen is fixedly installed inside the frame. The same protective frame is fixedly installed on the side walls of the frame and the base. The motor is fixedly installed on the inner wall of the protective frame. A first chamber and a second chamber are provided inside the base. A lifting plate matching with it is slidably connected inside the second chamber. The lower end of the lifting plate is fixedly connected with a plurality of universal locking wheels. The top of the first chamber is rotatably connected with a plurality of first reciprocating lead screws. The lower ends of the plurality of first reciprocating lead screws all rotatably penetrate through the bottom of the first chamber and the top of the second chamber and are rotatably connected to the bottom of the second chamber. The plurality of first reciprocating lead screws located inside the second chamber all threadedly penetrate through the lifting plate; the utility model is not only convenient for workers to move the back frame body of the LED display screen, but also can effectively clean the display screen; however, this back frame for an LED display screen still has deficiencies: its display screen is directly fixed inside the frame, and no angle adjustment structure is provided. When the surface of the display screen reflects light due to external light and cannot be clearly seen, the structure fixed inside the frame cannot adjust the tilt angle of the display screen, affecting the display effect of the display screen. Content of the Utility Model

[0004] The purpose of the utility model is to provide a back frame for an LED display screen to solve the problem that in the above-mentioned back frame for an LED display screen, its display screen is directly fixed inside the frame, no angle adjustment structure is provided, and when the surface of the display screen reflects light due to external light and cannot be clearly seen, the structure fixed inside the frame cannot adjust the tilt angle of the display screen, affecting the display effect of the display screen.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A back frame for an LED display screen, comprising: a base and a frame. A pressing spring is fixedly connected to the inner top surface of the frame. The bottom end of the pressing spring is fixedly connected to a pressing top plate. A plug board is slidably connected to the bottom surface of the pressing top plate. The bottom end of the plug board is hinged to an arc panel. An expanding spring is fixedly connected to one side of the arc panel. A protective limiting plate is slidably connected to one side of the frame. A heat dissipation slot is provided on the other side of the frame. A rotating column is fixedly connected to the top end of one side of the frame. A support plate is fixedly connected to the top surface of the base. A base groove frame is fixedly connected to the bottom surface of the frame. A telescopic plate is elastically telescopically connected to the inside of the base groove frame through a limiting spring. A toothed panel is rotatably connected to the center of the top surface of the base. A limiting groove is provided on the top surface of the toothed panel. Moving rollers are fixedly connected symmetrically in four directions at the bottom of the base.

[0006] As a further scheme of the present utility model: The number of the pressing springs is provided with several groups, symmetrically arranged on the inner top surface of the frame. The bottom ends of several groups of the pressing springs are all fixedly connected to the same group of pressing top plates.

[0007] As a further scheme of the present utility model: A connecting sliding groove is provided on the bottom surface of the pressing top plate. A connecting sliding bar adapted to the specification of the connecting sliding groove is fixedly connected to the top end of the plug board. One end of the expanding spring is fixedly connected to one side of the plug board, and the other end is fixedly connected to one side of the arc panel. The number of the plug board and its connecting structure is both provided with two groups.

[0008] As a further scheme of the present utility model: Protective sliding bars are fixedly connected to both the top end and the bottom end of one side of the protective limiting plate. Protective sliding grooves adapted to the number and specification of the protective sliding bars are provided on the opposite sides of the frame. The number of the protective limiting plate and its connecting structure is both provided with several groups.

[0009] As a further scheme of the present utility model: The number of the rotating columns is provided with two groups, symmetrically arranged at the top ends of both sides of the frame. The number of the support plates is provided with two groups, symmetrically arranged at both ends of the top surface of the base. The two rotating columns respectively penetrate through the top ends of the corresponding support plates on the corresponding sides so that the frame is rotatably mounted on the top of the base.

[0010] As a further scheme of the present utility model: A connecting groove is provided at the center of the bottom surface of the toothed panel. A connecting convex block adapted to the specification of the connecting groove is fixedly connected to the center of the top surface of the base. The limiting groove is adapted to the specification of the telescopic plate.

[0011] As a further scheme of the present utility model: The number of the limiting springs is provided with two groups, symmetrically arranged in the telescopic slots inside the base groove frame. One end of the two groups of the limiting springs is fixedly connected to the inside of the base groove frame, and the other end is fixedly connected to the top end of the telescopic plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] 1. In the present utility model, the pressing top plate presses the top end of the display screen body through a pressing spring, and the spring structure enables it to adapt to the heights of display screens of different specifications. When the pressing top plate presses the display screen body, the plug board slidingly connected to the bottom surface thereof is inserted behind the display screen body accordingly. The hinged arc-shaped panel abuts against the back surface of the display screen body under the action of the expanding spring, improving its placement stability inside the frame. Moreover, the plug board and its connection structure can flexibly adjust the distance between the two through the connection chute and the connection slide bar, and cooperate with the protective limiting plate to press against the display screen to adapt to the widths of display screens of different specifications. The structures of several groups of protective limiting plates can also enclose the front and back sides of the frame when the device is idle, preventing the surface of the display screen inside from being contaminated by dust or impurities. The above structures enable different specifications of display screen structures to be clamped and installed inside the frame, improving the versatility of the device;

[0014] 2. The frame is rotatably connected between two support plates with the rotating column as the center. Several groups of rack structures for clamping and limiting are provided on the top surface of the tooth panel, and it is rotatably connected to the center of the top surface of the base through a circular connection groove and a connection convex block. When the tooth panel and the base are in a parallel state, the limiting groove is clamped with the telescopic plate to fix their relative positions. When the tooth panel is turned to be perpendicular to the base, the telescopic plate extends out of the base groove frame under the elastic connection of the limiting spring and is inserted into the corresponding tooth groove on the surface of the tooth panel to fix the inclination angle of the frame relative to the support plate, avoiding the display screen from being reflected by external light and affecting the display effect, and meeting the tilting display requirements at different angles. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of a back frame for an LED display screen according to the present utility model;

[0016] Figure 2 is the structural schematic diagram of the pressing top plate in a back frame for an LED display screen according to the present utility model;

[0017] Figure 3 is the structural schematic diagram of the base groove frame in a back frame for an LED display screen according to the present utility model;

[0018] Figure 4 is the structural schematic diagram of the plug board in a back frame for an LED display screen according to the present utility model;

[0019] Figure 5 is the structural schematic diagram of the tooth panel in a back frame for an LED display screen according to the present utility model;

[0020] Figure 6 is the structural schematic diagram of the connection groove in a back frame for an LED display screen according to the present utility model;

[0021] Figure 7It is a schematic structural diagram of the inclined state of the frame in a back frame for an LED display screen described in the present utility model.

[0022] In the figure: 1. Base; 2. Frame; 3. Pressing spring; 4. Pressing top plate; 5. Insertion plate; 6. Connecting chute; 7. Connecting slide bar; 8. Arc panel; 9. Expanding spring; 10. Protective limiting plate; 11. Protective chute; 12. Protective slide bar; 13. Heat dissipation groove; 14. Rotating column; 15. Support plate; 16. Basic groove frame; 17. Telescopic plate; 18. Limiting spring; 19. Tooth panel; 20. Connecting convex block; 21. Connecting groove; 22. Limiting groove; 23. Moving roller. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Next, the embodiments of the present utility model will be described according to its overall structure.

[0025] Refer to Figures 1 to 7, in the embodiment of the present utility model, a back frame for an LED display screen includes: a base 1 and a frame 2. A pressing spring 3 is fixedly connected to the inner top surface of the frame 2. The bottom end of the pressing spring 3 is fixedly connected to a pressing top plate 4. The bottom surface of the pressing top plate 4 is slidably connected to an insertion plate 5. The bottom end of the insertion plate 5 is hinged to an arc-shaped panel 8. One side of the arc-shaped panel 8 is fixedly connected to an expansion spring 9. One side of the frame 2 is slidably connected to a protective limiting plate 10. A heat dissipation groove 13 is provided on the other side of the frame 2. A rotating column 14 is fixedly connected to the top end of one side of the frame 2. A support plate 15 is fixedly connected to the top surface of the base 1. A base groove frame 16 is fixedly connected to the bottom surface of the frame 2. An expansion plate 17 is elastically telescopically connected to the inside of the base groove frame 16 through a limiting spring 18. The center of the top surface of the base 1 is rotatably connected to a toothed panel 19. A limiting groove 22 is provided on the top surface of the toothed panel 19. Moving rollers 23 are fixedly connected to the four directions of the bottom surface of the base 1 symmetrically.

[0026] Referring to Figure 2 , a plurality of groups of pressing springs 3 are provided, symmetrically arranged on the inner top surface of the frame 2. The bottom ends of the plurality of groups of pressing springs 3 are all fixedly connected to the same group of pressing top plates 4.

[0027] Adopting the above solution: The pressing top plate 4 is elastically connected to the pressing spring 3 to adapt to the height requirements of display screens of different specifications. The continuously tightened pressing spring 3 can stably longitudinally press the display screen body inside the frame 2. Buffer cushions for preventing scratches on the display screen are provided on the inner side of the frame 2 and the surfaces of related structures in contact with the display screen.

[0028] Referring to Figures 2 to 4 , a connecting sliding groove 6 is provided on the bottom surface of the pressing top plate 4. A connecting sliding bar 7 adapted to the specification of the connecting sliding groove 6 is fixedly connected to the top end of the insertion plate 5. One end of the expansion spring 9 is fixedly connected to one side of the insertion plate 5, and the other end is fixedly connected to one side of the arc-shaped panel 8. The number of the insertion plate 5 and its connecting structures are both provided with two groups.

[0029] Adopting the above solution: When the pressing top plate 4 presses the display screen body, the insertion plate 5 slidably connected to the bottom surface thereof is inserted behind the display screen body accordingly, so that the hinged arc-shaped panel 8 abuts against the back surface of the display screen body under the action of the expansion spring 9, improving its placement stability inside the frame 2. Moreover, the insertion plate 5 and its connecting structures can flexibly adjust the distance between the two through the connecting sliding groove 6 and the connecting sliding bar 7 to adapt to the widths of display screens of different specifications.

[0030] Referring to Figure 2 , protective sliding bars 12 are fixedly connected to both the top end and the bottom end of one side of the protective limiting plate 10. Protective sliding grooves 11 adapted to the number and specification of the protective sliding bars 12 are provided on the two opposite sides of the frame 2. The number of the protective limiting plate 10 and its connecting structures are both provided with a plurality of groups.

[0031] Adopting the above solution: The protective limit plates 10 that are slidably connected to the front and rear sides of the frame 2 through the protective slide bars 12 and the anti-slip chutes 11 can flexibly adjust the spacing and quantity, making the ends of their sides abut against the end frames of both ends of the display body. The abutting structure of the arc-shaped panel 8 and the expanding spring 9 enables the display body to be stably pressed horizontally inside the frame 2. The structures of several groups of protective limit plates 10 can also enclose the front and rear sides of the frame 2 when the device is idle, preventing the surface of the display inside from being contaminated by dust or impurities.

[0032] Referring to Figure 1 and Figure 2 There are two sets of rotating columns 14, which are symmetrically arranged at the top ends of both sides of the frame 2. There are two sets of support plates 15, which are symmetrically arranged at both ends of the top surface of the base 1. The two sets of rotating columns 14 respectively penetrate the top ends of the corresponding support plates 15 on their respective sides, enabling the frame 2 to be rotatably mounted on the top of the base 1.

[0033] Adopting the above solution: The frame 2 is mounted on the top of the base 1 through the rotating columns 14 symmetrically arranged at the top ends of both sides, penetrating the support plates 15, and is rotatably connected between the two sets of support plates 15 with the rotating columns 14 as the center.

[0034] Referring to Figure 5 and Figure 6 A connecting groove 21 is opened at the center of the bottom surface of the tooth panel 19. A connecting convex block 20 that is adapted to the specification of the connecting groove 21 is fixedly connected to the center of the top surface of the base 1. The limiting groove 22 is adapted to the specification of the telescopic plate 17.

[0035] Adopting the above solution: The top surface of the tooth panel 19 is provided with several groups of rack structures for clamping and limiting, and is rotatably connected to the center of the top surface of the base 1 through the circular connecting groove 21 and the connecting convex block 20. When the tooth panel 19 and the base 1 are in a parallel state, the limiting groove 22 is clamped with the telescopic plate 17 to fix their relative positions.

[0036] Referring to Figure 3 There are two sets of limiting springs 18, which are symmetrically arranged in the telescopic grooves inside the base groove frame 16. One end of each of the two sets of limiting springs 18 is fixedly connected to the inside of the base groove frame 16, and the other end is fixedly connected to the top end of the telescopic plate 17.

[0037] Adopting the above solution: Rotate the tooth panel 19 to make it perpendicular to the base 1. The telescopic plate 17 extends out of the base groove frame 16 and is snapped into the corresponding tooth grooves on the surface of the tooth panel 19 due to the elastic connection of the limiting springs 18, so as to fix the inclination angle of the frame 2 relative to the support plate 15, prevent the display from reflecting light caused by external light and affecting the display effect, and meet the inclination display requirements at different angles.

[0038] The working principle of the present utility model is as follows: The display screen body is placed inside the frame 2. The distance and quantity of the protective limit plates 10 are adjusted so that the ends of both sides of the front and rear sides thereof are tightly abutted against the two end frames of the display screen body to clamp the display screen. The pressing top plate 4 presses the top end of the display screen body tightly through the pressing spring 3, and the spring structure enables it to adapt to the heights of different specifications of display screens. When the pressing top plate 4 presses the display screen body tightly, the insertion plate 5 slidingly connected to the bottom surface thereof is inserted behind the display screen body accordingly, so that the hinged arc-shaped panel 8 abuts tightly against the back surface of the display screen body under the action of the expanding spring 9, improving its placement stability inside the frame 2. Moreover, the insertion plate 5 and its connection structure can flexibly adjust the distance between the two through the connection chute 6 and the connection slide bar 7, and cooperate with the protective limit plates 10 to tightly abut against the display screen to adapt to the widths of different specifications of display screens. The structures of several groups of protective limit plates 10 can also enclose the front and rear sides of the frame 2 when the device is idle, preventing the surface of the display screen inside from being contaminated by dust or impurities. The above structures enable different specifications of display screen structures to be clamped and installed inside the frame 2, improving the versatility of the device. The heat dissipation slots 13 facilitate passing through the heat dissipation slot openings, and wires can also be externally connected through these slots. The frame 2 is erected on the top of the base 1 through the rotating columns 14 symmetrically arranged at the two top ends thereof passing through the support plates 15, and is rotatably connected between the two support plates 15 with the rotating columns 14 as the center. The top surface of the tooth panel 19 is provided with several groups of rack structures for clamping and limiting, and is rotatably connected to the center of the top surface of the base 1 through the circular connection groove 21 and the connection protrusion 20. When the tooth panel 19 and the base 1 are in a parallel state, the limit groove 22 is clamped with the telescopic plate 17 to fix their relative positions. When the tooth panel 19 is turned to be perpendicular to the base 1, the telescopic plate 17 extends out of the base groove frame 16 under the elastic connection of the limit spring 18 and is clamped into the corresponding tooth grooves on the surface of the tooth panel 19 to fix the inclination angle of the frame 2 relative to the support plate 15, avoiding the display screen from being reflected by external light and affecting the display effect, and meeting the tilting display requirements at different angles.

[0039] The above-mentioned is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A back frame for an LED display screen, characterized in that, Including: A base (1) and a frame (2), a pressing spring (3) is fixedly connected to the inner top surface of the frame (2), the bottom end of the pressing spring (3) is fixedly connected to a pressing top plate (4), a plug board (5) is slidably connected to the bottom surface of the pressing top plate (4), the bottom end of the plug board (5) is hinged to an arc panel (8), a spreading spring (9) is fixedly connected to one side of the arc panel (8), a protective limiting plate (10) is slidably connected to one side of the frame (2), a heat dissipation slot (13) is opened on the other side of the frame (2), a rotating column (14) is fixedly connected to the top end of one side of the frame (2), a supporting plate (15) is fixedly connected to the top surface of the base (1), a base groove frame (16) is fixedly connected to the bottom surface of the frame (2), a telescopic plate (17) is elastically telescopically connected to the inside of the base groove frame (16) through a limiting spring (18), a toothed panel (19) is rotatably connected to the center of the top surface of the base (1), a limiting groove (22) is opened on the top surface of the toothed panel (19), and moving rollers (23) are fixedly connected to the bottom of the base (1) symmetrically in four directions.

2. The back frame for an LED display screen according to claim 1, characterized in that, The number of the pressing springs (3) is set to several groups, which are symmetrically arranged on the inner top surface of the frame (2), and the bottom ends of several groups of the pressing springs (3) are fixedly connected to the same pressing top plate (4).

3. The back frame for an LED display screen according to claim 1, characterized in that, A connecting sliding groove (6) is opened on the bottom surface of the pressing top plate (4), a connecting sliding bar (7) adapted to the specification of the connecting sliding groove (6) is fixedly connected to the top end of the plug board (5), one end of the spreading spring (9) is fixedly connected to one side of the plug board (5), and the other end is fixedly connected to one side of the arc panel (8). The number of the plug board (5) and its connecting structure is set to two groups.

4. The back frame for an LED display screen according to claim 1, characterized in that, Protective sliding bars (12) are fixedly connected to the top end and the bottom end of one side of the protective limiting plate (10), protective sliding grooves (11) adapted to the number and specification of the protective sliding bars (12) are opened on the opposite sides of the frame (2), and the number of the protective limiting plate (10) and its connecting structure is set to several groups.

5. The back frame for an LED display screen according to claim 1, characterized in that, The number of the rotating columns (14) is set to two groups, which are symmetrically arranged at the top ends of both sides of the frame (2), the number of the supporting plates (15) is set to two groups, which are symmetrically arranged at both ends of the top surface of the base (1), and the two rotating columns (14) respectively penetrate through the top ends of the corresponding supporting plates (15) so that the frame (2) is rotatably mounted on the top of the base (1).

6. The back frame for an LED display screen according to claim 1, characterized in that A connecting groove (21) is opened at the center of the bottom surface of the toothed panel (19), a connecting convex block (20) adapted to the specification of the connecting groove (21) is fixedly connected to the center of the top surface of the base (1), and the limiting groove (22) is adapted to the specification of the telescopic plate (17).

7. The back frame for an LED display screen according to claim 1, characterized in that, The number of the limiting springs (18) is set to two groups, which are symmetrically arranged in the telescopic grooves inside the base groove frame (16), and one end of the two limiting springs (18) is fixedly connected to the inside of the base groove frame (16), and the other end is fixedly connected to the top end of the telescopic plate (17).

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