LED display module with good heat dissipation effect

Abstract

The utility model relates to an LED (light-emitting diode) display module with a good heat dissipation effect, which comprises a shell internally provided with a circuit board, a top opening of the shell is provided with a sealing frame through a connecting piece, a display screen is fixedly arranged in the sealing frame, the display screen is electrically connected with the circuit board, and the circuit board is fixedly connected with the shell. The shell comprises an inner shell body and an outer shell body which is arranged on the peripheral side of the inner shell body in a sleeving mode and fixedly connected with the inner shell body, the side wall of the inner shell body is fixedly connected with a plurality of cooling fins, one ends of the cooling fins are located in the exhaust channel, and the other ends of the cooling fins extend to the leeward position of the circuit board. Heat generated when the circuit board works can be transmitted to the ends, located in the exhaust channel, of the cooling fins through the ends, close to the circuit board, of the cooling fins, the air cooling device is used for conveying high-speed flowing cold air along the exhaust channel to discharge the heat on the cooling fins, and uniform heat dissipation of all positions of the circuit board is achieved. And the heat dissipation effect of the LED display module is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED display modules, and in particular relates to an LED display module with good heat dissipation effect. Background Art

[0002] LED display modules are products made up of a certain number of light-emitting diodes arranged together in a regular pattern, then packaged and waterproofed. They can be used to display images, text or animation information and are widely used in airports, stations, shops, hotels and other places.

[0003] The circuit board of the LED display module generates a large amount of heat when working. To facilitate heat dissipation, an air cooling device is generally installed on the LED display module housing. The existing method generally uses a fan for heat dissipation. Since the fan is fixed to the housing, the circuit board on the side away from the fan is blocked, resulting in poor heat dissipation effect in the leeward position of the circuit board. Utility Model Content

[0004] The purpose of the present invention is to provide an LED display module with a simple structure, reasonable design and good heat dissipation effect in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] The heat dissipation device is a kind of LED display module with good heat dissipation effect, which includes a shell with a circuit board installed inside, a sealing frame installed on the top opening of the shell through a connecting piece, a display screen fixedly installed in the sealing frame, and the display screen is electrically connected to the circuit board. The shell includes an inner shell and an outer shell which is sleeved on the circumference of the inner shell and fixedly connected to the inner shell, an exhaust passage of an annular structure is formed between the inner shell and the outer shell, a plurality of heat dissipation fins are fixedly provided on the side wall of the inner shell, one end of the heat dissipation fin is located in the exhaust passage, and the other end of the heat dissipation fin extends to the leeward position of the circuit board, a heat dissipation pipe fixedly connected to the shell is provided on one side wall of the shell, a through hole is provided on a circumference of a section of the heat dissipation pipe located in the exhaust passage, an air cooling device is fixedly installed in the heat dissipation pipe, and an exhaust hole is provided on the side wall of the shell on the side opposite to the heat dissipation pipe.

[0007] As a further optimization solution of the present invention, the connecting piece includes a threaded hole opened in the side wall of the open end of the shell, and also includes a screw rod that passes through the sealing frame and is arranged in alignment with the threaded hole, and the screw rod is threadedly connected to the shell through the threaded hole.

[0008] As a further optimization solution of the present invention, the heat dissipation fin is a plate-shaped structure, and one end of the heat dissipation fin located in the exhaust channel is fixedly connected to a metal ring.

[0009] As a further optimization solution of the present invention, the air cooling device includes a motor embedded in the inner cavity of the heat dissipation pipe, and a fan blade is fixedly connected to the output end of the motor. The diameters of the motor and the fan blade are both smaller than the inner diameter of the heat dissipation pipe.

[0010] As a further optimization solution of the present invention, multiple connecting shafts are fixedly connected to the peripheral side of the motor, the multiple connecting shafts and the multiple through holes are staggered, and one end of the connecting shaft away from the motor is fixedly connected to the inner wall of the heat dissipation pipe.

[0011] As a further optimization solution of the present invention, a protective ring is screwed to one end of the heat dissipation pipe located outside the shell, a filter is provided in the protective ring, and the peripheral side of the filter is fixedly connected to the inner wall of the protective ring.

[0012] The beneficial effect of the present invention is that: since a plurality of heat dissipation fins are fixedly connected to the side wall of the inner shell, and one end of the heat dissipation fin is located in the exhaust channel and the other end extends to the leeward position of the circuit board, the heat generated when the circuit board is working can be transmitted through the end of the heat dissipation fin close to the circuit board to the end of the heat dissipation fin located in the exhaust channel, and the air cooling device is used to transport high-speed cold air along the exhaust channel to discharge the heat from the heat dissipation fins, thereby achieving uniform heat dissipation at various positions of the circuit board, thereby greatly improving the heat dissipation effect of the LED display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the shell of the utility model;

[0016] Figure 4 This utility model Figure 3 A magnified view of the local details at point A;

[0017] Figure 5 It is a schematic diagram of the installation structure of the air cooling device of the utility model.

[0018] In the figure: 1. Outer shell; 2. Inner shell; 3. Circuit board; 4. Display screen; 5. Sealing frame; 6. Screw; 7. Threaded hole; 8. Exhaust channel; 9. Heat dissipation fin; 10. Metal ring; 11. Heat dissipation pipe; 12. Through hole; 13. Air cooling device; 14. Connecting shaft; 15. Exhaust hole; 16. Protective ring; 17. Filter. DETAILED DESCRIPTION

[0019] The present application is described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1 - Figure 5 As shown, an LED display module with good heat dissipation effect includes a shell with a circuit board 3 installed inside, a sealing frame 5 is installed on the top opening of the shell through a connecting piece, a display screen 4 is fixedly installed in the sealing frame 5, and the display screen 4 is electrically connected to the circuit board 3. The shell, the circuit board 3, the sealing frame 5 and the display screen 4 together constitute the LED display module, the shell includes an inner shell 2 and an outer shell 1 that is sleeved on the circumference of the inner shell 2 and fixedly connected to the inner shell 2, the connecting piece includes a threaded hole 7 opened on the side wall of the open end of the outer shell 1, and also includes a screw 6 that passes through the sealing frame 5 and is arranged in alignment with the threaded hole 7, the screw 6 is screwed to the outer shell 1 through the threaded hole 7, and the screw connection method is convenient for disassembly of the sealing frame 5 and the display screen 4. When the circuit board 3 is damaged, it is convenient to replace and repair the circuit board 3 in the shell;

[0022] An annular exhaust passage 8 is formed between the inner shell 2 and the outer shell 1. A plurality of heat dissipation fins 9 are fixedly provided on the side wall of the inner shell 2. The heat dissipation fins 9 are plate-shaped. One end of the heat dissipation fin 9 is located in the exhaust passage 8, and the other end of the heat dissipation fin 9 extends to the leeward position of the circuit board 3. A metal ring 10 is fixedly connected to one end of the heat dissipation fin 9 located in the exhaust passage 8. The metal ring 10 is provided to increase the contact surface between the heat dissipation fin 9 and the flowing air in the exhaust passage 8, thereby improving the heat dissipation efficiency of the heat dissipation fin 9.

[0023] A heat dissipation pipe 11 fixedly connected to the shell 1 is penetrated by one side wall of the shell 1. A through hole 12 is opened on a circumference of the heat dissipation pipe 11 located in the exhaust channel 8. An air cooling device 13 is fixedly installed in the heat dissipation pipe 11. The air cooling device 13 includes a motor embedded in the inner cavity of the heat dissipation pipe 11. The output end of the motor is fixedly connected to a fan blade. The diameters of the motor and the fan blade are smaller than the inner diameter of the heat dissipation pipe 11. A plurality of connecting shafts 14 are fixedly connected to the circumference of the motor. The plurality of connecting shafts 14 are staggered with the plurality of through holes 12. The end of the connecting shaft 14 away from the motor is fixedly connected to the inner wall of the heat dissipation pipe 11. An exhaust hole 15 is opened on the side wall of the shell 1 on the opposite side of the heat dissipation pipe 11.

[0024] It should be noted that, in this LED display module with good heat dissipation effect, when the circuit board 3 generates a large amount of heat due to long-term work, causing the temperature inside the inner shell 2 to be too high, the air cooling device 13 can be started, and the fan blades are driven by the motor to rotate at high speed, and the cold air in the external environment is introduced into the exhaust channel 8 through the heat dissipation pipe 11 and the through hole 12, and flows along the exhaust channel 8 to the exhaust hole 15 position for discharge. Since a plurality of heat dissipation fins 9 are fixedly connected to the side wall of the inner shell 2, and one end of the heat dissipation fin 9 is located in the exhaust channel 8, and the other end of the heat dissipation fin 9 extends to the leeward position of the circuit board 3, the heat generated by the circuit board 3 during operation can be transmitted through the end of the heat dissipation fin 9 close to the circuit board 3 to the end of the heat dissipation fin 9 located in the exhaust channel 8, and the high-speed flowing cold air is used to discharge the heat on the heat dissipation fin 9, thereby achieving uniform heat dissipation at various positions of the circuit board 3, thereby greatly improving the heat dissipation effect of the LED display module.

[0025] Example 2

[0026] Further improvements were made based on Example 1, such as Figure 1 and Figure 2 As shown, a protective ring 16 is screwed to one end of the heat dissipation pipe 11 outside the housing 1 , a filter screen 17 is provided inside the protective ring 16 , and the periphery of the filter screen 17 is fixedly connected to the inner wall of the protective ring 16 .

[0027] A protective ring 16 is provided to protect one end of the heat dissipation pipe 11 located outside the housing 1 , and a filter 17 is provided inside the protective ring 16 to filter dust and impurities in the air, thereby preventing dust and impurities from entering the heat dissipation pipe 11 as much as possible, thereby damaging the air cooling device 13 installed in the heat dissipation pipe 11 and affecting the service life of the air cooling device 13 .

[0028] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. An LED display module with good heat dissipation effect, comprising a housing with a circuit board (3) installed inside, a sealing frame (5) installed on the top opening of the housing through a connector, a display screen (4) fixedly installed in the sealing frame (5), and the display screen (4) is electrically connected to the circuit board (3), characterized in that: The shell comprises an inner shell (2) and an outer shell (1) which is sleeved on the circumference of the inner shell (2) and fixedly connected to the inner shell (2); an annular exhaust passage (8) is formed between the inner shell (2) and the outer shell (1); a plurality of heat dissipation fins (9) are fixedly provided on the side wall of the inner shell (2); one end of the heat dissipation fin (9) is located in the exhaust passage (8); the other end of the heat dissipation fin (9) extends to the leeward position of the circuit board (3); a heat dissipation pipe (11) fixedly connected to the outer shell (1) is provided on one side wall of the outer shell (1); a through hole (12) is provided on a circumference of a section of the heat dissipation pipe (11) located in the exhaust passage (8); an air cooling device (13) is fixedly installed in the heat dissipation pipe (11); an exhaust hole (15) is provided on the side wall of the outer shell (1) opposite to the heat dissipation pipe (11).

2. The LED display module with good heat dissipation effect according to claim 1, characterized in that: The connecting member comprises a threaded hole (7) formed on the side wall of the open end of the housing (1), and also comprises a screw rod (6) penetrating the sealing frame (5) and arranged in alignment with the threaded hole (7); the screw rod (6) is threadedly connected to the housing (1) through the threaded hole (7).

3. The LED display module with good heat dissipation effect according to claim 1, characterized in that: The heat dissipation fin (9) is a plate-shaped structure, and one end of the heat dissipation fin (9) located in the exhaust passage (8) is fixedly connected to a metal ring (10).

4. The LED display module with good heat dissipation effect according to claim 1, characterized in that: The air cooling device (13) comprises a motor embedded in the inner cavity of the heat dissipation tube (11), a fan blade is fixedly connected to the output end of the motor, and the diameters of the motor and the fan blade are both smaller than the inner diameter of the heat dissipation tube (11).

5. The LED display module with good heat dissipation effect according to claim 4, characterized in that: A plurality of connecting shafts (14) are fixedly connected to the peripheral side of the motor, the plurality of connecting shafts (14) and the plurality of through holes (12) are staggered and distributed, and one end of the connecting shaft (14) away from the motor is fixedly connected to the inner wall of the heat dissipation pipe (11).

6. The LED display module with good heat dissipation effect according to claim 1, characterized in that: One end of the heat dissipation pipe (11) located outside the housing (1) is screwed with a protective ring (16), a filter (17) is provided inside the protective ring (16), and the peripheral side of the filter (17) is fixedly connected to the inner wall of the protective ring (16).

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