LED box body with high electromagnetic compatibility

Abstract

The utility model relates to the technical field of LED box bodies, and discloses an LED box body with high electromagnetic compatibility, which comprises an LED box body, a plurality of back plates are fixedly mounted in the LED box body, shielding box bodies are fixedly mounted on the back plates, two wiring holes are formed in the front surface of each shielding box body, an extrusion mechanism is arranged on each shielding box body, and the shielding box bodies are arranged in the wiring holes. The extrusion mechanism comprises two U-shaped plates and two gears, two connecting grooves are formed in the shielding box body, containing grooves are formed in the inner walls of the left side and the right side of each connecting groove, and through the arrangement of the two U-shaped plates, two sets of circuits on the receiving card enter the shielding box body from the two wiring holes to be connected with the wiring card; and the two U-shaped plates extrude the lines, so that the gaps between the connecting lines are reduced, and the electromagnetic radiation is better shielded, thereby improving the shielding effect of the box body on the electromagnetic radiation, and further improving the electromagnetic compatibility of the box body.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED box technical field, concretely is a LED box with high electromagnetic compatibility. BACKGROUND

[0002] Electromagnetic compatibility (EMC, namely Electromagnetic Compatibility) is the ability of equipment or system to operate in its electromagnetic environment without giving rise to intolerable electromagnetic disturbances to any equipment in its environment. Therefore, EMC includes two aspects of requirements: one is that the electromagnetic disturbance generated by equipment in the normal operation process to the environment cannot exceed certain limit value, and the other is that the equipment has a certain degree of anti-interference to the electromagnetic disturbance existing in the environment, i.e. electromagnetic sensitivity. With the application of LED display screen in the professional indoor field more and more widely, the design and improvement of electromagnetic compatibility become particularly important.

[0003] The existing LED box will bind the receiving card on the back plate of the LED box after being spliced and installed, and then the receiving card is wired, and the receiving card is responsible for receiving and processing signals from the control system. In the process of receiving and processing signals, the electronic circuit in the receiving card will perform switching operation, which will generate electromagnetic field, thereby possibly causing electromagnetic radiation. Shielding material or shielding box is usually used to wrap the receiving card to reduce the leakage of electromagnetic radiation. However, when the shielding box wraps the receiving card, a plurality of long holes need to be opened to pass the wires connected with the receiving card, which will cause the electromagnetic radiation possibly leaking from the inside of the holes. There is a large gap between the wires and the upper and lower inner walls of the wiring hole, and the electromagnetic radiation may leak from the gap, which will affect the external equipment. UTILITARY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the defects of the prior art, the utility model provides a LED box with high electromagnetic compatibility, which solves the problem that the shielding box needs to open a plurality of long holes to pass the wires connected with the receiving card when wrapping the receiving card, which will cause the electromagnetic radiation possibly leaking from the inside of the holes, and there is a large gap between the wires and the wiring hole, and the electromagnetic radiation may leak from the gap, which will affect the external equipment.

[0006] (II) Technical scheme

[0007] To achieve the above object, the utility model provides the following technical scheme: A LED box body that electromagnetic compatibility is high, including LED box body, a plurality of backboards are fixedly installed in the inside of LED box body, the shielding box body is fixedly installed on a plurality of backboards, the front surface of shielding box body is equipped with two wiring holes,

[0008] The extrusion mechanism is arranged on the shielding box body, the extrusion mechanism comprises two U-shaped plates and two gears, two connecting grooves are formed in the inside of the shielding box body, receiving grooves are formed in the left and right side inner walls of the two connecting grooves, four receiving grooves are communicated with the interiors of the corresponding wiring holes respectively, the two U-shaped plates are slidably installed in the interiors of the two connecting grooves respectively, the left and right ends of the two U-shaped plates extend into the interiors of the corresponding receiving grooves respectively, and an installation groove is formed in the inside of the shielding box body.

[0009] Preferably, the extrusion mechanism further comprises two connecting plates and two toothed plates, the two connecting plates are fixedly installed on the corresponding surfaces of the two U-shaped plates respectively, the corresponding ends of the two connecting plates slidably extend into the interior of the installation groove, the two toothed plates are fixedly installed on the corresponding ends of the two connecting plates respectively, and the two toothed plates are in meshing connection with the gear.

[0010] Preferably, a rectangular hole is formed in the front surface of the gear, a rectangular plate is slidably installed in the interior of the rectangular hole, a polygonal groove is formed in the front surface of the shielding box body, a connecting rod is rotatably installed on the rear inner wall of the polygonal groove, the rear end of the connecting rod slidably extends into the interior of the rectangular hole, and the connecting rod is in fixed connection with the rectangular plate.

[0011] Preferably, a polygonal plate is slidably installed in the interior of the polygonal groove, and the polygonal plate is in fixed connection with the connecting rod.

[0012] Preferably, a movable door is arranged on the upper surface of the shielding box body.

[0013] Preferably, a ventilation hole is formed in the rear surface of the shielding box body.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a LED box body that electromagnetic compatibility is high, has the following beneficial effects:

[0016] 1、The LED box body that electromagnetic compatibility is high, through two U-shaped plates setting, and reducing the number of wiring hole makes two groups of lines on the receiving card enter the interior of shielding box body from two wiring holes and connect with the wiring card, then makes two U-shaped plates extrude the line, reduces the gap between the connecting line, better shields electromagnetic radiation, thereby improves the shielding effect of electromagnetic radiation of the box body, and further improves the electromagnetic compatibility of the box body.

[0017] 2、 the LED box body that electromagnetic compatibility is high, through the polygonal plate is pulled out from the inside of polygonal slot, make connecting rod with rectangular plate move, in rotating polygonal plate makes gear synchronous rotation, make two U-shaped plate move, after rotating, push polygonal plate back to the inside of polygonal slot again, to the gear is fixed, simple operation, it is convenient for staff to use the box body, improve the work efficiency of staff. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole overhead structure schematic diagram of the utility model electromagnetic compatibility high LED box body;

[0019] Figure 2 It is shielding box body inside cutaway front view structure schematic diagram of the utility model;

[0020] Figure 3 It is shielding box body inside cutaway side view structure schematic diagram of the utility model;

[0021] Figure 4 It is shielding box body inside cutaway overhead structure schematic diagram of the utility model.

[0022] In the drawing: 1, LED box body;2, backboard;3, shielding box body;4, wiring hole;5, U-shaped plate;6, gear;7, connecting slot;8, storage slot;9, installation slot;10, connecting plate;11, toothed plate;12, rectangular hole;13, rectangular plate;14, polygonal slot;15, connecting rod;16, polygonal plate;17, movable door;18, ventilation hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-4 The utility model provides a kind of new technical scheme: a kind of electromagnetic compatibility high LED box body, including LED box body 1, the inside fixed mounting of LED box body 1 has multiple backboard 2, multiple backboard 2 are all fixedly installed with shielding box body 3, the front surface of shielding box body 3 is equipped with two wiring holes 4;

[0025] The extrusion mechanism is installed on the shielding box body 3. The extrusion mechanism includes two U-shaped plates 5 and two gears 6. The U-shaped plates 5 are made of the same material as the shielding box body 3. The shielding box body 3 has two connecting grooves 7 inside. The inner walls of the left and right sides of the two connecting grooves 7 are provided with storage grooves 8. The four storage grooves 8 are respectively connected to the corresponding wiring holes 4. The two U-shaped plates 5 are slidably installed inside the two connecting grooves 7. The left and right ends of the two U-shaped plates 5 extend into the corresponding storage grooves 8. The shielding box body 3 has an installation groove 9 inside. The gears 6 are rotatably installed on the inner wall of the installation groove 9.

[0026] Furthermore, the extrusion mechanism also includes two connecting plates 10 and two toothed plates 11. The two connecting plates 10 are respectively fixedly installed on the corresponding surfaces of the two U-shaped plates 5. The corresponding ends of the two connecting plates 10 slide into the interior of the mounting groove 9. The two toothed plates 11 are respectively fixedly installed on the corresponding ends of the two connecting plates 10. The two toothed plates 11 are meshed with the gear 6.

[0027] Furthermore, by setting up two U-shaped plates 5, the two sets of lines on the receiving card enter the interior of the shielding box body 3 from the two wiring holes 4 and connect to the wiring card. Then, the two U-shaped plates 5 squeeze the lines to reduce the gap between the connecting lines and better shield electromagnetic radiation, thereby improving the shielding effect of the box against electromagnetic radiation and thus improving the electromagnetic compatibility of the box.

[0028] Furthermore, a rectangular hole 12 is provided on the front surface of the gear 6, and a rectangular plate 13 is slidably installed inside the rectangular hole 12. A polygonal groove 14 is provided on the front surface of the shielding box body 3, and a connecting rod 15 is rotatably installed on the rear inner wall of the polygonal groove 14. The rear end of the connecting rod 15 extends slidably into the interior of the rectangular hole 12, and the connecting rod 15 is fixedly connected to the rectangular plate 13.

[0029] Furthermore, a polygonal plate 16 is slidably installed inside the polygonal groove 14, and the polygonal plate 16 is fixedly connected to the connecting rod 15.

[0030] Furthermore, by pulling the polygonal plate 16 out from the inside of the polygonal groove 14, the connecting rod 15 and the rectangular plate 13 can be moved. The gear 6 can be rotated synchronously by rotating the polygonal plate 16. After the rotation is completed, the polygonal plate 16 can be pushed back into the inside of the polygonal groove 14 to fix the gear 6. The operation is simple, which makes it convenient for the staff to use the box and improves the staff's work efficiency.

[0031] Furthermore, the upper surface of the shielding box body 3 is provided with a movable door 17.

[0032] Furthermore, ventilation holes 18 are provided on the rear surface of the shielding box body 3.

[0033] Working Principle: When installing this LED box, the shielding box body 3 is soldered to the back plate 2, and then the back plate 2 is installed inside the LED box body 1. After installation, the wiring is arranged. The receiver card's connection wires are flat. When arranging the wiring, one end of the wire connected to the receiver card can be passed through the wiring hole 4 into the interior of the shielding box body 3 and exit from the top of the shielding box body 3. Then, the wiring card is connected. After wiring, the wiring card is placed inside the shielding box body 3. After the wiring is arranged, the polygonal plate 16 can be pulled out from inside the polygonal slot 14. The connecting rod 15 fixedly connected to the polygonal plate 16 and the rectangular plate 13 fixedly connected to the connecting rod 15 are moved, causing the polygonal plate 16 to open. The polygonal plate 16, connecting rod 15, and rectangular plate 13 all move forward. After the polygonal plate 16 leaves the interior of the polygonal groove 14, the polygonal plate 16 can be rotated. The polygonal plate 16 drives the connecting rod 15 and the rectangular plate 13 to rotate, so that the gear 6 on the outer surface of the rectangular plate 13 rotates synchronously. The rotation of the gear 6 drives the two toothed plates 11 that are meshed with it to move closer to each other. The two toothed plates 11 drive the two connecting plates 10 to move synchronously. The two connecting plates 10 drive the two U-shaped plates 5 that are fixedly connected to them to move synchronously inside the corresponding connecting groove 7 and receiving groove 8, so that the two U-shaped plates 5 enter the corresponding wiring hole 4 to squeeze the wires located inside the wiring hole 4, reduce the gap between the connecting wires, and better shield electromagnetic radiation.

[0034] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED enclosure with high electromagnetic compatibility, comprising an LED enclosure body (1), wherein multiple back plates (2) are fixedly installed inside the LED enclosure body (1), and a shielding box body (3) is fixedly installed on each of the multiple back plates (2), characterized in that: The shielding box body (3) has two wiring holes (4) on its front surface; The extrusion mechanism is set on the shielding box body (3). The extrusion mechanism includes two U-shaped plates (5) and two gears (6). The shielding box body (3) has two connecting grooves (7) inside. The inner walls of the two connecting grooves (7) on the left and right sides are provided with storage grooves (8). The four storage grooves (8) are respectively connected to the corresponding wiring holes (4). The two U-shaped plates (5) are respectively slidably installed inside the two connecting grooves (7). The left and right ends of the two U-shaped plates (5) extend into the corresponding storage grooves (8). The shielding box body (3) has an installation groove (9) inside. The gears (6) are rotatably installed on the inner wall of the installation groove (9).

2. The LED enclosure with high electromagnetic compatibility according to claim 1, characterized in that: The extrusion mechanism also includes two connecting plates (10) and two toothed plates (11). The two connecting plates (10) are respectively fixedly installed on the corresponding surfaces of the two U-shaped plates (5). The corresponding ends of the two connecting plates (10) slide into the interior of the mounting groove (9). The two toothed plates (11) are respectively fixedly installed on the corresponding ends of the two connecting plates (10). The two toothed plates (11) are meshed with the gear (6).

3. The LED enclosure with high electromagnetic compatibility according to claim 1, characterized in that: The front surface of the gear (6) has a rectangular hole (12), and a rectangular plate (13) is slidably installed inside the rectangular hole (12). The front surface of the shielding box body (3) has a polygonal groove (14), and a connecting rod (15) is rotatably installed on the rear inner wall of the polygonal groove (14). The rear end of the connecting rod (15) extends slidably into the interior of the rectangular hole (12), and the connecting rod (15) is fixedly connected to the rectangular plate (13).

4. The LED enclosure with high electromagnetic compatibility according to claim 3, characterized in that: A polygonal plate (16) is slidably installed inside the polygonal groove (14), and the polygonal plate (16) is fixedly connected to the connecting rod (15).

5. The LED enclosure with high electromagnetic compatibility according to claim 1, characterized in that: The upper surface of the shielding box body (3) is provided with a movable door (17).

6. The LED enclosure with high electromagnetic compatibility according to claim 1, characterized in that: Ventilation holes (18) are provided on the rear surface of the shielding box body (3).

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