CN216079722U

CN216079722U - Direct-in type backlight source heat radiation structure

Info

Publication number: CN216079722U
Application number: CN202122648178.5U
Authority: CN
Inventors: 杨达; 王国胜; 曹明进; 吕阳; 庄加局
Original assignee: Ningbo CRRC Times Transducer Technology Co Ltd
Current assignee: Ningbo CRRC Times Transducer Technology Co Ltd
Priority date: 2021-11-01
Filing date: 2021-11-01
Publication date: 2022-03-18
Anticipated expiration: 2031-11-01

Abstract

The utility model belongs to the field of direct-in type backlight sources, and particularly relates to a direct-in type backlight source heat dissipation structure which comprises a shell, wherein a circuit board is contacted in the shell, a backlight source is fixedly arranged on the circuit board, a screen is embedded in the shell, a first fan is fixedly arranged in the shell, the shell is contacted with a protective cover, a second fan is fixedly arranged in the shell, a support is welded on the shell, a sliding groove is formed in the support, a filter screen is connected in the sliding groove in a sliding manner, a guide rod is welded on the shell, and a spring is arranged in the sliding groove. According to the utility model, the shell, the first fan, the second fan and other mechanisms are arranged, the shell is made of aluminum alloy, the shell is contacted with the circuit board to accelerate heat conduction to the circuit board, air is sucked out of the shell through the first fan, and air is blown into the shell through the second fan, so that convection heat dissipation is formed in the shell, and the heat dissipation effect of the device is better.

Description

Direct-in type backlight source heat radiation structure

Technical Field

The utility model relates to the technical field of direct-in type backlight sources, in particular to a direct-in type backlight source heat dissipation structure.

Background

The direct type backlight source technology has the advantages of high luminance, good light-emitting visual angle, high light utilization efficiency, simple structure and the like. A certain space is reserved between the diffusion sheet and the LED backlight to improve the brightness uniformity, so that the thickness, the weight and the power consumption of the module are increased by the direct type backlight source, and the quantity, the brightness and the power consumption of the light source are all larger than those of the edge type backlight source. The heat energy released by the LED backlight in the working state is concentrated in the cavity. In the prior art, when the direct-in backlight source heat dissipation structure is used, the heat dissipation effect of the device is low, and meanwhile, the heat dissipation efficiency of the device is unstable. Accordingly, there is a need for improvements in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a direct-in type backlight source heat dissipation structure, which solves the problem of low heat dissipation effect of a device and also solves the problem of unstable heat dissipation efficiency of the device.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a direct income formula backlight heat radiation structure, includes the casing, the casing internal contact has the circuit board, fixed mounting has the backlight on the circuit board, it has the screen to inlay in the casing, fixed mounting has first fan in the casing, the casing contact has the protection casing, fixed mounting has the second fan in the casing, the welding has the support on the casing, the spout has been seted up in the support, sliding connection has the filter screen in the spout, the welding has the guide arm on the casing, be provided with the spring in the spout, sliding connection has the guide arm in the spring, the lateral wall of support has four spacer pins through threaded connection.

Preferably, the casing is made of aluminum alloy, support legs are welded to the casing, and the support legs are fixed to the circuit board.

Preferably, the welding has the fixture block on the safety cover, the draw-in groove has been seted up on the casing, sliding connection has the fixture block in the draw-in groove.

Preferably, the filter screen is provided with a guide hole, and the guide hole is internally and slidably connected with a guide rod.

Preferably, one end of the spring is welded with the shell, and the other end of the spring is in contact with the filter screen.

Preferably, four limiting pins are uniformly distributed on the support, and the limiting pins are in contact with the filter screen.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, the shell, the first fan, the second fan and other mechanisms are arranged, the shell is made of aluminum alloy, the shell is contacted with the circuit board to accelerate heat conduction to the circuit board, air is sucked out of the shell through the first fan, and air is blown into the shell through the second fan, so that convection heat dissipation is formed in the shell, and the heat dissipation effect of the device is better.

2. According to the utility model, through the arrangement of the structural matching of the filter screen, the spring, the limiting pin and the like, the filter screen filters air entering the shell, when the filter screen is blocked, the filter screen moves upwards under the suction of the second fan so that the spring is compressed, and when the second fan stops working, the spring resets so that the filter screen and the limiting pin collide and vibrate, so that sundries attached to the filter screen are shaken off, the filter screen is not easy to block, and the cooling efficiency is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the utility model at B in FIG. 1.

In the figure: 1. a housing; 2. a circuit board; 3. a support leg; 4. a backlight source; 5. a screen; 6. a first fan; 7. a protective cover; 8. a clamping block; 9. a card slot; 10. a second fan; 11. a support; 12. a chute; 13. Filtering with a screen; 14. a guide bar; 15. a guide hole; 16. a spring; 17. and a limiting pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a direct-in type backlight source heat dissipation structure includes a housing 1, a circuit board 2 is contacted in the housing 1, a backlight source 4 is fixedly installed on the circuit board 2, a screen 5 is embedded in the housing 1, a first fan 6 is fixedly installed in the housing 1, a protective cover 7 is contacted in the housing 1, a second fan 10 is fixedly installed in the housing 1, a support 11 is welded on the housing 1, a sliding groove 12 is formed in the support 11, a filter screen 13 is slidably connected in the sliding groove 12, a guide rod 14 is welded on the housing 1, a spring 16 is arranged in the sliding groove 12, the guide rod 14 is slidably sleeved in the spring 16, and four limit pins 17 are connected to a side wall of the support 11 through threads.

Referring to fig. 1, a housing 1 is made of aluminum alloy, a support leg 3 is welded on the housing 1, and the support leg 3 is fixed to a circuit board 2. By providing the support legs 3, the circuit board 2 is fixed.

Referring to fig. 2, a clamping block 8 is welded on the protective cover 7, a clamping groove 9 is formed on the housing 1, and the clamping block 8 is slidably connected in the clamping groove 9. The fixture block 8 is made of elastic engineering plastic, and is matched with the clamping groove 9 through the fixture block 8, so that the protective cover 7 is limited.

Referring to fig. 3, a guide hole 15 is formed on the filter screen 13, and a guide rod 14 is slidably connected in the guide hole 15. The screen 13 is guided by the guide holes 15 and the guide rods 14.

Referring to fig. 3, one end of the spring 16 is welded to the housing 1, and the other end of the spring 16 is in contact with the screen 13. By providing a spring 16, the auxiliary screen 13 is reset.

Referring to fig. 1 and 3, four limit pins 17 are uniformly distributed on the support 11, and the limit pins 17 are in contact with the filter screen 13. The stroke of the filter screen 13 is limited by arranging the limit pin 17.

The specific implementation process of the utility model is as follows: when in use, the first fan 6 and the second fan 10 are started, the first fan 6 is started to suck air out of the shell 1, the second fan 10 blows air into the shell 1, the heat conduction to the circuit board 2 is accelerated through the contact between the shell 1 and the circuit board 2, and the first fan 6 sucks air to the outside of the shell 1, and the second fan 10 blows air to the inside of the shell 1, so that convection heat dissipation is formed in the shell 1, the heat dissipation effect of the device is better, when the second fan 10 feeds air into the housing 1, the filter screen 13 filters the air fed into the housing 1, when the sieve 13 is clogged, the sieve 13 moves upward under the suction of the second fan 10 so that the spring 16 is compressed, when the second fan 10 stops working, the spring 16 is reset to enable the filter screen 13 and the limiting pin 17 to collide and vibrate, the sundries attached to the filter screen 13 are shaken off, so that the filter screen 13 is not easy to block, and the cooling efficiency is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a direct income formula backlight heat radiation structure, includes casing (1), its characterized in that: the utility model discloses a screen protection device, including casing (1), casing (1) internal contact has circuit board (2), fixed mounting has backlight (4) on circuit board (2), it has screen (5) to inlay in casing (1), casing (1) internal fixed mounting has first fan (6), casing (1) contact has protection casing (7), casing (1) internal fixed mounting has second fan (10), the welding has support (11) on casing (1), spout (12) have been seted up in support (11), sliding connection has filter screen (13) in spout (12), the welding has guide arm (14) on casing (1), be provided with spring (16) in spout (12), sliding sleeve has guide arm (14) in spring (16), the lateral wall of support (11) has four spacer pins (17) through threaded connection.

2. The direct-type backlight source heat dissipation structure of claim 1, wherein: the casing (1) is the aluminum alloy material, the welding has stabilizer blade (3) on casing (1), stabilizer blade (3) and circuit board (2) are fixed.

3. The direct-type backlight source heat dissipation structure of claim 1, wherein: the welding has fixture block (8) on protection casing (7), draw-in groove (9) have been seted up on casing (1), sliding connection has fixture block (8) in draw-in groove (9).

4. The direct-type backlight source heat dissipation structure of claim 1, wherein: a guide hole (15) is formed in the filter screen (13), and a guide rod (14) is connected in the guide hole (15) in a sliding mode.

5. The direct-type backlight source heat dissipation structure of claim 1, wherein: one end of the spring (16) is welded with the shell (1), and the other end of the spring (16) is in contact with the filter screen (13).

6. The direct-type backlight source heat dissipation structure of claim 1, wherein: four spacer pins (17) evenly distributed on support (11), spacer pin (17) and filter screen (13) contact.