Liquid crystal display screen heat dissipation device

Abstract

The utility model discloses a liquid crystal display screen heat dissipation device which comprises a rear shell and a front cover which are assembled together, an outer shell is formed between the rear shell and the front cover, a liquid crystal assembly is installed in the outer shell, and the middle of the back side of the rear shell protrudes outwards to form a hollow boss. A boss is arranged in the rear shell, a slope surface is formed between the edge of the boss and the edge of the rear shell, ventilation holes are formed in the opposite slope surfaces, an air outlet plate is installed on the inner wall of the boss, an air outlet nozzle facing the surface of the back side of the liquid crystal assembly is arranged on one side of the air outlet plate, and the air outlet nozzle inclines from the ventilation hole in one side to the ventilation hole in the other side; the liquid crystal display module has a larger air outlet area, so that the liquid crystal display module has a better heat dissipation effect, and the phenomenon of insufficient heat dissipation in an area with higher heating temperature caused by non-uniformity of heating temperature distribution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to display screens, in particular to a heat dissipation device for a liquid crystal display screen. Background Art

[0002] Liquid crystal display is an active matrix liquid crystal display driven by thin film transistors. It mainly uses electric current to stimulate liquid crystal molecules to generate points, lines, and surfaces to form a picture with the back light tube. Its working principle is that under the action of the electric field, the arrangement direction of liquid crystal molecules changes, the transmittance of the external light source changes (modulation), and the electro-optical conversion is completed. Then, the different excitations of the three primary color signals are used to complete the color reproduction in the time domain and space domain through the red, green, and blue primary color filters. The traditional heat dissipation method is to evenly arrange fans on the back panel and use the fans to draw air to form air convection to dissipate heat. However, this method does not take into account the uneven distribution of the heating temperature of the panel, resulting in insufficient heat dissipation in areas with higher heating temperatures, and cannot effectively reduce the temperature of the backlight module. Utility Model Content

[0003] In order to solve the defects in the prior art that the heating temperature distribution of the panel is uneven, resulting in insufficient heat dissipation in areas with higher heating temperatures and inability to effectively reduce the temperature of the backlight module, the utility model provides a heat dissipation device for a liquid crystal display screen.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a heat dissipation device for a liquid crystal display screen, comprising a rear shell and a front cover assembled together, wherein an outer shell is formed between the rear shell and the front cover, a liquid crystal component is installed in the outer shell, a middle portion of a back side of the rear shell protrudes outwardly to form an internally hollow boss, an edge of the boss forms an inclined surface with the edge of the rear shell, ventilation holes are arranged on the opposite inclined surfaces, an air outlet plate is installed on the inner wall of the boss, and an air outlet nozzle facing the back surface of the liquid crystal component is arranged on one side of the air outlet plate, and the air outlet nozzle is arranged obliquely from the ventilation hole on one side toward the ventilation hole on the other side; a micro fan and a flat dust filter box are installed on the rear shell, an air inlet end of the micro fan is connected to an air outlet end of the dust filter box, and the air outlet end of the micro fan is connected to the air outlet plate via an air guide pipe.

[0006] As a preferred technical solution of the utility model, the surface size of the boss is three quarters of the surface size of the liquid crystal component.

[0007] As a preferred technical solution of the utility model, the density of the air outlets of the air outlet plate at the position facing the device area with high heat generation in the liquid crystal assembly is greater than that in other areas.

[0008] As a preferred technical solution of the utility model, the slope surface is provided with an inwardly concave groove, a magnetic block is provided on the peripheral side of the groove, and an iron dust-blocking net attracted to the magnetic block is provided in the groove.

[0009] As a preferred technical solution of the utility model, the dust filter box is provided with filter screens on three sides, and the rear shell is provided with an insertion strip, and the back side of the dust filter box is provided with a limiting cavity for vertically inserting the insertion strip.

[0010] As a preferred technical solution of the utility model, an air outlet pipe is provided on the dust filter box.

[0011] The beneficial effects of the utility model are:

[0012] This type of heat dissipation device for a liquid crystal display screen is provided with an air outlet plate installed on the inner wall of the boss, and an air outlet nozzle is provided on one side of the air outlet plate facing the back surface of the liquid crystal component, so that it has a large air outlet area, thereby having a good heat dissipation effect on the liquid crystal component. The air filtered by the dust filter is pumped into the air outlet plate from the outside through a micro-fan and sprayed out from the air outlet nozzle. An active heat dissipation method is adopted, and an air outlet nozzle is provided on one side of the air outlet plate facing the back surface of the liquid crystal component, which is conducive to gas circulation, has a good heat dissipation effect, and effectively prevents dust from entering. In the utility model, the density of air outlet nozzles in the air outlet plate facing the device area with high heat generation in the liquid crystal component is greater than that in other areas. The size of the air outlet can be adjusted according to the amount of heat dissipation, thereby avoiding the uneven distribution of heating temperature, which leads to the occurrence of insufficient heat dissipation in areas with higher heating temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a structural schematic diagram of a heat dissipation device for a liquid crystal display screen of the utility model;

[0015] Figure 2 It is a structural schematic diagram of a ventilation hole of a heat dissipation device for a liquid crystal display screen of the utility model;

[0016] Figure 3 It is a structural schematic diagram of a groove of a heat dissipation device for a liquid crystal display screen of the utility model;

[0017] Figure 4 The utility model is a structural schematic diagram of an inserting strip of a heat dissipation device for a liquid crystal display screen.

[0018] In the figure: 1. rear shell; 2. front cover; 3. boss; 4. slope surface; 5. ventilation hole; 6. air outlet plate; 7. air outlet nozzle; 8. micro fan; 9. dust filter box; 10. groove; 11. magnetic block; 12. dust blocking net; 13. filter net; 14. insert; 15. limit cavity; 16. air outlet pipe. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0020] Example: Figures 1 to 4 As shown, the utility model is a heat dissipation device for a liquid crystal display screen, comprising a rear shell 1 and a front cover 2 assembled together, and a shell is formed between the rear shell 1 and the front cover 2, a liquid crystal component is installed in the shell, the middle part of the back side of the rear shell 1 protrudes outward to form an internal hollow boss 3, the edge of the boss 3 and the edge of the rear shell form a slope surface 4, ventilation holes 5 are provided on the opposite slope surfaces 4, and an air outlet plate 6 is installed on the inner wall of the boss 3, and an air outlet nozzle 7 facing the back surface of the liquid crystal component is provided on one side of the air outlet plate 6, and the air outlet nozzle 7 is inclined from one side of the ventilation hole toward the other side of the ventilation hole 5; the rear shell 1 is installed with a micro fan 8 and a flat dust filter box 9, the air inlet end of the micro fan 8 is connected to the air outlet end of the dust filter box 9, and the air outlet end of the micro fan 8 is connected to the air outlet plate 6 via an air guide pipe. An air outlet plate 6 is installed on the inner wall of the boss 3, and an air outlet nozzle 7 is provided on one side of the air outlet plate 6 facing the back surface of the liquid crystal component. This has a larger air outlet area, thereby having a better heat dissipation effect on the liquid crystal component. The external air filtered by the dust filter 13 is pumped into the air outlet plate 6 through the micro fan 8 and sprayed out from the air outlet nozzle 7. An active heat dissipation method is adopted, and an air outlet nozzle 7 is provided on one side of the air outlet plate 6 facing the back surface of the liquid crystal component. This is beneficial to gas circulation, has a better heat dissipation effect, and effectively prevents dust from entering.

[0021] The surface size of the boss 3 is three quarters of the surface size of the liquid crystal component.

[0022] Among them, the density of the air outlet nozzles 7 of the air outlet plate 6 facing the device area with high heat generation in the liquid crystal component is greater than that in other areas. The air outlet volume is adjusted according to the amount of heat dissipation, thereby avoiding the uneven distribution of heat temperature and the occurrence of insufficient heat dissipation in areas with higher heat temperatures.

[0023] Among them, the slope surface 4 is provided with an inwardly recessed groove 10, a magnetic block 11 is provided on the peripheral side of the groove 10, and an iron dust blocking net 12 attracted to the magnetic block 11 is provided in the groove 10. The dust blocking net 12 plays a role in blocking dust, thus preventing dust from entering the interior through the ventilation hole when not in use; and it is easy to install and disassemble, so as to facilitate dust cleaning.

[0024] The dust filter box 9 is provided with filter screens 13 on three sides, and the rear shell 1 is provided with an insertion strip 14. The back side of the dust filter box 9 is provided with a limiting cavity 15 for vertical insertion of the insertion strip 14, so as to facilitate the disassembly of the dust filter box and facilitate dust cleaning.

[0025] Wherein, the dust filter box 9 is provided with an air outlet pipe 16 .

[0026] When working, this type of heat dissipation device for a liquid crystal display screen has an air outlet plate 6 installed on the inner wall of the boss 3, and an air outlet nozzle 7 is provided on one side of the air outlet plate 6 facing the back surface of the liquid crystal component, so that it has a larger air outlet area, thereby having a better heat dissipation effect on the liquid crystal component. The air filtered by the dust filter 13 from the outside is pumped into the air outlet plate 6 through the micro fan 8, and is ejected from the air outlet nozzle 7. An active heat dissipation method is adopted, and an air outlet nozzle 7 is provided on one side of the air outlet plate 6 facing the back surface of the liquid crystal component, which is conducive to gas circulation, has a better heat dissipation effect, and effectively prevents dust from entering. In the utility model, the density of the air outlet nozzles 7 at the position of the air outlet plate 6 facing the device area with high heat generation in the liquid crystal component is greater than that in other areas. The size of the air outlet can be adjusted according to the amount of heat dissipation, thereby avoiding the uneven distribution of the heating temperature, which leads to the occurrence of insufficient heat dissipation in the area with higher heating temperature.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat dissipation device for a liquid crystal display screen, comprising a rear shell (1) and a front cover (2) assembled together, wherein a shell is formed between the rear shell (1) and the front cover (2), and a liquid crystal component is installed in the shell, characterized in that: The middle part of the back side of the rear shell (1) bulges outward to form a boss (3) with a hollow interior, the edge of the boss (3) and the edge of the rear shell form a slope surface (4), the opposite slope surface (4) is provided with a ventilation hole (5), and an air outlet plate (6) is installed on the inner wall of the boss (3), and an air outlet nozzle (7) facing the back surface of the liquid crystal component is provided on one side of the air outlet plate (6), and the air outlet nozzle (7) is arranged from one side of the ventilation hole toward the other side of the ventilation hole (5); the rear shell (1) is installed with a micro fan (8) and a flat dust filter box (9), the air inlet end of the micro fan (8) is connected to the air outlet end of the dust filter box (9), and the air outlet end of the micro fan (8) is connected to the air outlet plate (6) via an air guide pipe.

2. A liquid crystal display screen heat dissipation device according to claim 1, characterized in that: The surface size of the boss (3) is three quarters of the surface size of the liquid crystal component.

3. The liquid crystal display heat dissipation device according to claim 1, characterized in that: The density of the air outlet nozzles (7) of the air outlet plate (6) at a position facing a device region with high heat generation in the liquid crystal assembly is greater than that in other regions.

4. The liquid crystal display heat dissipation device according to claim 1, characterized in that: The slope surface (4) is provided with an inwardly recessed groove (10), a magnetic block (11) is provided on the peripheral side of the groove (10), and an iron dust-blocking net (12) which is attracted to the magnetic block (11) is provided in the groove (10).

5. The liquid crystal display heat dissipation device according to claim 1, characterized in that: The dust filter box (9) is provided with filter screens (13) on three sides, and the rear shell (1) is provided with an insertion strip (14), and the back side of the dust filter box (9) is provided with a limiting cavity (15) for vertically inserting the insertion strip (14).

6. The liquid crystal display screen heat dissipation device according to claim 5, characterized in that: The dust filter box (9) is provided with an air outlet pipe (16).

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