A front maintenance LED display screen

Abstract

This utility model discloses a front-maintenance LED display screen, relating to the field of LED displays. It includes an LED display screen body and a mounting frame. A circuit board is mounted on one side of the LED display screen body, a fixing mesh is mounted on another side, and a base plate is fixed to one side of the fixing mesh. A rotating column is mounted on one side of the base plate via a bearing, and a turntable is fixed to one end of the rotating column. The turntable has an arc-shaped groove inside. This utility model solves the problem of inconvenient disassembly of the LED display screen body. In this design, only a flathead screwdriver needs to be inserted into the horizontal groove on the rotating column at the center of the front of the LED display screen body, and rotated 45°. The limiting block moves with the turntable, disengaging from the mounting frame. A spring then ejects the LED display screen body, completing the disassembly without damaging the LED display screen body. Furthermore, only one hole is opened on the front, which fits the rotating column, preventing rainwater from flowing into the hole and avoiding damage to the product.

Description

Technical Field

[0001] The utility model relates to the field of LED display screens, in particular to a front-maintained LED display screen. Background Art

[0002] Existing LED display screens are mainly divided into rear-maintenance LED display screens and front-maintenance LED display screens. The installation and maintenance of rear-maintenance display screens are all performed on the back of the display screen, which has certain restrictions on the installation site and requires reserved maintenance space; the front-maintenance LED display screen makes the overall structure of the display screen thinner and lighter, and the installation and maintenance are performed in front of the LED display screen, which has fewer restrictions on the installation site and a wider range of applications.

[0003] When maintaining the LED display before installation, the installation frame needs to be installed in place, and then the LED display body needs to be fixed to the installation frame from the front. The existing installation methods are mainly divided into upper and lower screw fixing and magnetic fixing. Upper and lower screw fixing means that there are two very small screw holes on the front of the LED display body. Use a small screwdriver to tighten the upper and lower screws so that the buckles on the back are buckled on the installation frame. After the LED display body is installed, when it needs to be disassembled, turn the screws in the opposite direction to make the buckles detach from the installation frame, and then insert the plug plate into the gap between the LED display body to bring out the LED display body, and the disassembly is completed; another magnetic fixing is to use a magnetic block to fix the LED display body in the installation frame. When disassembling, the LED display body needs to be pulled out with a suction cup.

[0004] The existing upper and lower screw fixation requires two holes to be opened on the front of the LED display screen body. The front-maintained LED screen is now widely used outdoors. The more holes on the front, the greater the possibility of rainwater entering the interior. The LED display screen body needs to be replaced frequently. In addition, when removing the LED display screen body, the plug-in board is inserted into the gap between the LED display screen bodies to remove the LED display screen body, which will damage the LED display screen body and cause unnecessary replacement. The magnetic suction has poor stability, and the lamp beads on the surface will also be damaged when the suction cup is removed. At present, the disassembly of the two installation methods will damage the LED display screen body, increasing the cost of use. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a front-maintained LED display screen to solve the technical problem of the inconvenience of disassembling the front-maintained LED display screen body.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a front-maintained LED display screen comprises an LED display screen body and a mounting frame, a circuit board is mounted on one side of the LED display screen body, a fixed net is mounted on one side of the LED display screen body, and a bottom plate is fixed on one side of the fixed net, a rotating column is mounted on one side of the bottom plate through a bearing, and a turntable is fixed at one end of the rotating column, an arc groove is opened inside the turntable, and a protrusion is movably mounted on the inner wall of the arc groove, a connecting rod is fixed at the bottom of the protrusion, and a limiting block is mounted at one end of the connecting rod.

[0007] By adopting the above technical solution, the problem of inconvenient disassembly of the LED display screen body is solved. When the LED display screen needs to be disassembled for maintenance, in this case, it is only necessary to insert a flat-blade screwdriver into the horizontal groove on the rotating column at the center position of the front of the LED display screen body, rotate it 45°, and the limit block moves with the turntable. The limit block is separated from the installation frame, and the spring pops out the LED display screen body. The disassembly is completed without damaging the LED display screen body. In addition, only one hole is opened on the front, and this hole also fits with the rotating column. No rainwater will flow into the hole, thereby avoiding damage to the product by rainwater.

[0008] The utility model is further configured that a plurality of support plates are movably installed inside the installation frame, and a limit plate is movably installed inside the support plate, and both ends of the limit plate are arc-shaped.

[0009] By adopting the above technical solution, when the limit block is connected to the installation frame, the limit block will rotate the limit plate in a vertical state to a parallel state, and the arcs at both ends of the limit plate will not form an extrusion with the limit block.

[0010] The utility model is further configured such that a transverse groove is provided at the other end of the rotating column. Since the rotating column is flush with one side of the LED display screen body, rainwater is not easy to enter the interior of the box, thereby effectively extending the service life. For the convenience of maintenance, a flat-blade screwdriver is inserted into the transverse groove provided at one end of the rotating column and rotated by degrees to open the internal structure, thereby separating the LED display screen body from the mounting frame.

[0011] The utility model is further configured that the cross section of the limit block is configured to be L-shaped, a rubber pad is fixed on the top of the limit block, and a rubber ring is sleeved on the outer wall of the limit plate.

[0012] By adopting the above technical solution, the limit block will be released from the limit plate during the installation process. Both the limit block and the limit plate are provided with a rubber layer, which effectively increases the friction between the limit block and the limit plate, making the limit block not easy to fall off.

[0013] The utility model is further configured that a guide vane is installed on one side of the fixed net, and the guide vane is inclined, and the inclination angle of the guide vane is 20°-30°.

[0014] By adopting the above technical solution, when the fan is started, the wind will be directed to the surroundings according to the inclination angle of the guide blades, so that the heat can be evenly dissipated in the entire box, avoiding excessive heating of local circuit boards and reducing service life.

[0015] The utility model is further configured that a spring is installed on one side of the fixed net, and a limiting ring is installed on one side of the fixed net.

[0016] By adopting the above technical solution, when the limit block is separated from the installation frame, the LED display screen body is ejected outward by utilizing the restoring force of the spring, thereby avoiding the LED display screen body being violently pried apart from the gap, reducing human damage to the LED display screen body and increasing its service life; the limit ring can limit the connecting rod on the fixed net, thereby avoiding the problem of the connecting rod falling off by itself after the installation is completed.

[0017] The utility model is further configured that a fan is installed on one side of the installation frame.

[0018] By adopting the above technical solution, the fan can generate wind force to dissipate heat of the circuit board as quickly as possible, thereby avoiding safety hazards caused by overheating of the circuit board.

[0019] In summary, the utility model mainly has the following beneficial effects:

[0020] 1. The utility model solves the problem of inconvenient disassembly of the LED display screen body by providing a support plate, a limit plate, a fixed net, a turntable, an arc groove, a bottom plate, a rotating column, a transverse groove, a connecting rod, a limit block, a convex block and a spring. When the LED display screen needs to be disassembled for maintenance, the present invention only needs to insert a flat-blade screwdriver into the transverse groove on the rotating column at the center of the front of the LED display screen body, rotate it 45 degrees, and the limit block moves with the turntable. The limit block is separated from the installation frame, and the spring pops up the LED display screen body. The disassembly is completed without damaging the LED display screen body. In addition, only one hole is opened on the front, and this hole also fits with the rotating column. No rainwater will flow into the hole, thereby avoiding damage to the product by rainwater;

[0021] 2. The utility model solves the problem of uneven heat dissipation of the circuit board by the fan by providing a fixed net and guide blades. The fan is installed on one side of the mounting bracket and blows directly toward the circuit board. The guide blades can guide the wind blown by the fan into every corner of the box, so that the overall heat dissipation of the circuit board is uniform and not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front perspective view of the utility model;

[0023] Figure 2 It is a back perspective view of the utility model;

[0024] Figure 3 This is a schematic diagram of the back structure of the utility model;

[0025] Figure 4 It is a schematic diagram of the internal structure of the utility model;

[0026] Figure 5 It is an internal cross-sectional view of the utility model;

[0027] Figure 6 This is a working schematic diagram of the turntable and the limit rod of the utility model;

[0028] Figure 7 This is a schematic diagram of the connection between the turntable and the connecting rod of the utility model;

[0029] Figure 8 It is a schematic diagram of the connection between the limit block and the limit plate of the utility model.

[0030] In the figure: 1. LED display screen body; 2. Installation frame; 21. Support plate; 22. Limit plate; 3. Fixed net; 4. Circuit board; 5. Turntable; 51. Arc groove; 52. Bottom plate; 53. Rotating column; 54. Horizontal groove; 6. Connecting rod; 61. Limit block; 62. Bump; 63. Limit ring; 7. Guide vane; 8. Spring; 9. Fan. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0032] The following describes an embodiment of the utility model based on its overall structure.

[0033] A front maintenance LED display screen, such as Figure 1 - Figure 8 As shown, it includes an LED display screen body 1 and a mounting frame 2.

[0034] Specifically, a circuit board 4 is installed on one side of the LED display screen body 1, a fixed net 3 is installed on one side of the LED display screen body 1, and a bottom plate 52 is fixed on one side of the fixed net 3, a rotating column 53 is installed on one side of the bottom plate 52 through a bearing, and a turntable 5 is fixed on one end of the rotating column 53, the bottom plate 52 is installed on one side of the fixed net 3, and then the connecting rod 6 passes through the limit ring 63 on the fixed net 3, and the connecting rod 6 is placed on the bottom plate 52, an arc groove 51 is opened inside the turntable 5, and a convex block 62 is movably installed on the inner wall of the arc groove 51, and a connecting rod 6 is fixed at the bottom of the convex block 62, and the connecting rod 6 is fixed to the bottom of the convex block 62. A limit block 61 is installed at one end of the connecting rod 6; at the same time, the protrusion 62 on the connecting rod 6 is limited to the arc groove 51. At this time, the LED display body 1 and the installation frame 2 are fitted together to compress the spring 8. Then a flat-head screwdriver is inserted into the transverse groove 54 on the rotating column 53 and rotated 45°, so that the limit block 61 at one end of the four groups of connecting rods 6 is inserted between the two groups of support plates 21. The limit block 61 pushes one end of the limit plate 22 to rotate the limit plate 22 90°. The rubber layer on the limit plate 22 contacts the rubber ring on the limit block 61, which limits the limit block 61 and prevents it from falling off easily. The installation is now complete.

[0035] See also Figure 6 and Figure 8 A plurality of support plates 21 are movably installed inside the mounting frame 2, and a limit plate 22 is movably installed inside the support plate 21. Both ends of the limit plate 22 are arc-shaped. When the limit block 61 is connected to the mounting frame 2, the limit block 61 will rotate the limit plate 22 in a vertical state into a parallel state, and the arc-shaped ends of the limit plate 22 will not form extrusion with the limit block 61.

[0036] See also Figure 1 and Figure 7 A transverse groove 54 is provided at one end of the rotating column 53. Since the rotating column 53 is flush with one side of the LED display body 1, rainwater is not easy to enter the interior of the box, which effectively extends the service life. For easy maintenance, a flat-blade screwdriver is inserted into the transverse groove 54 at one end of the rotating column 53 and rotated 45° to open the internal structure, so that the LED display body 1 and the mounting frame 2 can be separated.

[0037] See also Figure 4 and Figure 8 The cross-section of the limit block 61 is set to be L-shaped, and a rubber pad is fixed on the top of the limit block 61, and a rubber ring is sleeved on the outer wall of the limit plate 22; the limit block 61 will be released from the limit plate 22 during the installation process, and both the limit block 61 and the limit plate 22 are provided with a rubber layer, which effectively increases the friction between the limit block 61 and the limit plate 22, making the limit block 61 not easy to fall off.

[0038] See also Figure 3 - Figure 6A guide blade 7 is installed on one side of the fixed net 3, and the guide blade 7 is tilted. The tilt angle of the guide blade 7 is 20°-30°. When the fan 9 is started, the wind will be guided to the surroundings along the tilt angle of the guide blade 7, so that the heat can be evenly dissipated in the entire box, avoiding excessive heating of the local circuit board 4 and reducing the service life.

[0039] See also Figure 3 - Figure 6 A spring 8 is installed on one side of the fixed net 3, and a limiting ring 63 is installed on one side of the fixed net 3. When the limiting block 61 is separated from the installation frame 2, the LED display body 1 is popped outward by the restoring force of the spring 8, thereby avoiding the LED display body 1 being violently pried apart from the gap, reducing human damage to the LED display body 1 and increasing its service life; the limiting ring 63 can limit the connecting rod 6 on the fixed net 3 to avoid the problem of the connecting rod 6 falling off by itself after the installation is completed.

[0040] See also Figure 2 A fan 9 is installed on one side of the mounting frame 2. The fan 9 can generate wind to dissipate heat from the circuit board 4 as quickly as possible, thereby avoiding safety hazards caused by overheating of the circuit board 4.

[0041] The working principle of the utility model is as follows: when maintaining the LED display screen before installation, the bottom plate 52 is installed on one side of the fixed net 3, and then the connecting rod 6 passes through the limiting ring 63 on the fixed net 3, and the connecting rod 6 is placed on the bottom plate 52, and the rotating column 53 on the turntable 5 passes through the bottom plate 52, the fixed net 3 and the LED display screen body 1, and at the same time, the protrusion 62 on the connecting rod 6 is limited to the arc groove 51, at this time, the LED display screen body 1 and the installation frame 2 are fitted together, so that the spring 8 is compressed, and then a flat-head screwdriver is inserted into the transverse groove 54 on the rotating column 53 and rotated 45°, so that the limiting block 61 at one end of the four groups of connecting rods 6 is inserted between the two groups of support plates 21, and the limiting block 61 pushes one end of the limiting plate 22 to rotate the limiting plate 22 90°, and the rubber layer on the limiting plate 22 contacts the rubber ring on the limiting block 61, and the limiting block 61 is limited so that it will not fall off easily, and the installation is completed.

[0042] After the power is turned on, the fan 9 rotates, and the guide blades 7 on the fixed net 3 disperse the wind to various angles inside the box along the inclination angle of the guide blades 7, so that the circuit board 4 dissipates heat evenly.

[0043] When the LED display needs to be maintained, a flat-blade screwdriver is inserted into the transverse groove 54 of the rotating column 53, and the rotating column 53 is rotated 45° to drive the turntable 5 to rotate synchronously. At the same time, the protrusion 62 moves in the arc groove 51, so that the connecting rods 6 are close to each other, the limit block 61 is separated from the limit plate 22, and the compressed spring 8 is restored to pop out the LED display body 1 and separate it from the installation frame 2, and then the maintenance work is carried out.

[0044] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A front maintenance LED display screen, comprising an LED display screen body (1) and a mounting frame (2), characterized in that: A circuit board (4) is installed on one side of the LED display screen body (1), a fixed net (3) is installed on one side of the LED display screen body (1), and a bottom plate (52) is fixed on one side of the fixed net (3), a rotating column (53) is installed on one side of the bottom plate (52) via a bearing, and a rotating disk (5) is fixed on one end of the rotating column (53), an arc groove (51) is provided inside the rotating disk (5), and a convex block (62) is movably installed on the inner wall of the arc groove (51), a connecting rod (6) is fixed on the bottom of the convex block (62), and a limiting block (61) is installed on one end of the connecting rod (6).

2. A front maintenance LED display screen according to claim 1, characterized in that: The cross section of the limiting block (61) is arranged to be L-shaped, and a rubber pad is fixed on the top of the limiting block (61).

3. A front maintenance LED display screen according to claim 1, characterized in that: A plurality of groups of support plates (21) are movably mounted inside the installation frame (2), and a limit plate (22) is movably mounted inside the support plate (21), and both ends of the limit plate (22) are in an arc shape.

4. A front maintenance LED display screen according to claim 1, characterized in that: The other end of the rotating column (53) is provided with a transverse groove (54).

5. The front maintenance LED display screen according to claim 3, characterized in that: The outer wall of the limiting plate (22) is sleeved with a rubber ring.

6. The front maintenance LED display screen according to claim 1, characterized in that: A guide vane (7) is installed on one side of the fixed net (3), and the guide vane (7) is arranged tilted, and the tilt angle of the guide vane (7) is 20°-30°.

7. The front maintenance LED display screen according to claim 1, characterized in that: A spring (8) is installed on one side of the fixed net (3), and a limiting ring (63) is installed on one side of the fixed net (3).

8. The front maintenance LED display screen according to claim 1, characterized in that: A fan (9) is installed on one side of the installation frame (2).

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