Heat dissipation structure of liquid crystal display module

Abstract

The utility model discloses a heat dissipation structure of a liquid crystal display module, which relates to the technical field of liquid crystal display modules and comprises a liquid crystal display screen, a rear cover plate is arranged on the back of the liquid crystal display screen, a heat dissipation groove is arranged at the upper end of the surface of the rear cover plate, and a cooling box is mounted at the lower end of the surface of the rear cover plate. According to the heat dissipation structure of the liquid crystal display module, the cooling box, the heat dissipation fan, the semiconductor chilling plate and the like are arranged, and the heat dissipation fan is installed at the bottom of the rear cover plate, so that air is fed into the bottom of the rear cover plate and discharged from the heat dissipation grooves in the bottom, the exchange efficiency of internal and external airflow is improved, and the heat dissipation effect is improved; the semiconductor chilling plate is used for generating cooling capacity, air can be cooled, cold air is fed into the liquid crystal display module, cooling is achieved, the heat dissipation effect is guaranteed, the overall structure is simpler, the production cost and the machining difficulty are low, and the economic effect of a product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display modules, in particular to a heat dissipation structure of a liquid crystal display module. Background Art

[0002] Liquid crystal display modules have the advantages of light weight, small size, and low power consumption, and have been widely used in various information, communication and other products. However, when the liquid crystal display module is working, some driver chips need to be placed close to the liquid crystal display panel. The temperature of these driver chips is about 40 to 45°C, which will cause the temperature of the pixel units in the liquid crystal display panel close to these driver chips to increase, causing the liquid crystal display panel to have display problems such as screen flickering and screen stickiness (image retention), thereby affecting the display quality of the liquid crystal display module. Therefore, a heat dissipation structure is generally set on the liquid crystal display module to achieve heat dissipation and ventilation.

[0003] For example, patent number CN218630432U discloses a heat dissipation structure of a liquid crystal display module, including a liquid crystal display module, a heat dissipation structure is arranged on the front of the liquid crystal display module, an auxiliary structure is arranged on the front of the liquid crystal display module, the heat dissipation structure includes two shells, the backs of the two shells are fixedly connected to the front of the liquid crystal display module, refrigerators are fixedly installed on the inner bottom walls of the two shells, water cooling pipes are fixedly installed on the tops of the two refrigerators, heat dissipation fins are fixedly installed on the opposite sides of the two shells, a heat conducting sheet is fixedly installed on the front of the liquid crystal display module, and two connecting copper tubes are fixedly installed inside the two shells; the heat dissipation structure of the liquid crystal display module achieves the purpose of dissipating heat for the liquid crystal display module by being provided with the heat dissipation structure, provides a working environment with a suitable temperature for the liquid crystal display module, and improves its service life;

[0004] The general heat dissipation structure is to open ventilation slots on the back cover to achieve the circulation of internal and external air, so that the internal heat can be dissipated to achieve heat dissipation, but the heat dissipation effect is poor and is affected by the environment. The water cooling structure in the patent has many structural parts, which not only increases the processing difficulty, but also increases the overall cost. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a heat dissipation structure for a liquid crystal display module, which solves the problem that a general heat dissipation structure is to open ventilation slots on a back cover plate to achieve internal and external air circulation so that internal heat can be dissipated to achieve heat dissipation, but the heat dissipation effect is poor and is affected by the environment.

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a heat dissipation structure of a liquid crystal display module, including a liquid crystal display screen, a rear cover plate is provided on the back of the liquid crystal display screen, a heat dissipation groove is provided on the upper end of the rear cover plate surface, a cooling box is installed on the lower end of the rear cover plate surface, heat dissipation fans are installed on the left and right sides of the cooling box surface, a semiconductor refrigeration plate is installed on the back of the cooling box, a heat exchange plate is provided on the inner side of the cooling box, and a filter is provided on the inner side of the cooling box at the side of the heat exchange plate.

[0007] Preferably, the heat dissipation slots are arranged in two groups on the left and right sides of the rear cover plate, and the heat dissipation slots in each group are distributed at equal intervals.

[0008] Preferably, the rear cover plate and the cooling box are connected to each other via a through hole, and the length and width of the through hole are smaller than the length and width of the cooling box.

[0009] Preferably, the heat dissipation fan and the cooling box are connected to each other through an air supply port.

[0010] Preferably, three semiconductor refrigeration sheets are evenly spaced, a fin is provided on the surface of the hot end of the semiconductor refrigeration sheet, a cold end of the semiconductor refrigeration sheet extends to the inner side of the cooling box, and the fins are evenly spaced.

[0011] Preferably, the heat exchange fins are distributed at equal intervals, one end of the heat exchange fin is fixedly connected to the cold end of the semiconductor refrigeration fin, and the other end of the heat exchange fin extends to the outside of the through hole.

[0012] Preferably, the filter screen is composed of a filter screen frame and a desiccant filler, filter screens are installed at both ends of the inner side of the filter screen frame, and a desiccant filler is arranged on the inner side of the filter screen frame between the two filter screens.

[0013] The utility model provides a heat dissipation structure of a liquid crystal display module. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The heat dissipation structure of the liquid crystal display module is provided with a cooling box, a heat dissipation fan and a semiconductor refrigeration sheet, etc., and a heat dissipation fan is installed at the bottom of the rear cover plate, so that air is supplied to the bottom of the rear cover plate and discharged from the bottom heat dissipation groove, thereby increasing the exchange efficiency of the internal and external airflows and improving the heat dissipation effect. When the supplied air passes through the cooling box, the semiconductor refrigeration sheet is used to generate cold air, which can be cooled and supplied to the liquid crystal display module to achieve cooling and ensure the heat dissipation effect. The overall structure is simpler, the production cost and processing difficulty are low, and the economic effect of the product is guaranteed.

[0015] 2. The heat dissipation structure of the liquid crystal display module is provided with a heat dissipation fan and a filter. When the heat dissipation fan drives the air flow to enter the cooling box, the air is filtered through the filter. The filter structure can remove dust and impurities in the air, and the desiccant filler reduces the water vapor in the air, preventing dust and moisture from entering the liquid crystal display screen, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the cooling box structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the half-section structure of the cooling box of the utility model.

[0020] In the figure: 1. LCD display; 2. rear cover; 3. heat sink; 4. cooling box; 41. through hole; 5. heat dissipation fan; 6. semiconductor cooling plate; 61. fin; 7. heat exchange plate; 8. filter; 81. filter frame; 82. desiccant filler. DETAILED DESCRIPTION

[0021] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution: a heat dissipation structure of a liquid crystal display module, comprising a liquid crystal display screen 1, a rear cover plate 2 is arranged at the back of the liquid crystal display screen 1, a heat dissipation slot 3 is opened at the upper end of the surface of the rear cover plate 2, the heat dissipation slot 3 is arranged in two groups on the left and right sides of the rear cover plate 2, each group of heat dissipation slots 3 is distributed at equal intervals, a cooling box 4 is installed at the lower end of the surface of the rear cover plate 2, the rear cover plate 2 and the cooling box 4 are connected to each other through a through hole 41, the length and width of the through hole 41 are smaller than the length and width of the cooling box 4, heat dissipation fans 5 are installed on the left and right sides of the surface of the cooling box 4, the heat dissipation fan 5 and the cooling box 4 are connected to each other through an air supply port, the heat dissipation fan 5 is added, the heat dissipation fan 5 blows air in the cooling box 4, and the airflow enters the liquid crystal display screen 1 through the through hole 41, thereby increasing the exchange efficiency of the internal and external air and improving the heat dissipation effect;

[0023] A semiconductor refrigeration sheet 6 is installed on the back of the cooling box 4. Three semiconductor refrigeration sheets 6 are evenly spaced. The surface of the hot end of the semiconductor refrigeration sheet 6 is provided with a fin 61. The cold end of the semiconductor refrigeration sheet 6 extends to the inner side of the cooling box 4. The fins 61 are evenly spaced. A heat exchange sheet 7 is provided on the inner side of the cooling box 4. The heat exchange sheet 7 is evenly spaced. One end of the heat exchange sheet 7 is fixedly connected to the cold end of the semiconductor refrigeration sheet 6. The other end of the heat exchange sheet 7 extends to the outside of the through hole 41. A filter screen 8 is provided on the inner side of the cooling box 4 at the side of the heat exchange sheet 7. The filter screen 8 is composed of a filter screen frame 81 and a desiccant filler 82. The filter screen 8 is composed of a filter screen frame 81 and a desiccant filler 82. Filters are installed at both ends of the inner side of the mesh frame 81, and a desiccant filler 82 is arranged on the inner side of the filter frame 81 between the two filters. The hot end of the semiconductor refrigeration plate 6 dissipates heat and cools down through the fins 61, and the cold end is conducted through the heat exchange plate 7. When the air enters the cooling box 4, it can contact the heat exchange plate 7 to cool the air, so that cold air is blown into the LCD screen 1 to achieve cooling at the same time. At the same time, the air will pass through the filter 8, the filter removes dust in the air, and the desiccant filler 82 removes moisture in the air to prevent dust and moisture from entering the LCD screen 1, thereby improving practicality.

[0024] During operation, a heat dissipation fan 5 is added, and air is blown in the cooling box 4 by the heat dissipation fan 5, and the airflow enters the liquid crystal display screen 1 through the through hole 41, thereby increasing the exchange efficiency of the internal and external air and improving the heat dissipation effect. The hot end of the semiconductor refrigeration plate 6 dissipates heat and cools down through the fins 61, and the cold amount of the cold end is conducted through the heat exchange plate 7. When the air enters the cooling box 4, it can contact the heat exchange plate 7 to achieve cooling of the air, thereby blowing cold air into the liquid crystal display screen 1, and cooling is achieved synchronously. At the same time, the air will pass through the filter 8, the filter removes dust in the air, and the desiccant filler 82 removes moisture in the air to prevent dust and moisture from entering the liquid crystal display screen 1, thereby improving practicality.

[0025] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A heat dissipation structure of a liquid crystal display module, comprising a liquid crystal display screen (1), characterized in that: The back of the liquid crystal display screen (1) is provided with a rear cover plate (2), the upper end of the surface of the rear cover plate (2) is provided with a heat dissipation groove (3), the lower end of the surface of the rear cover plate (2) is provided with a cooling box (4), the left and right sides of the surface of the cooling box (4) are provided with heat dissipation fans (5), the back of the cooling box (4) is provided with a semiconductor cooling plate (6), the inner side of the cooling box (4) is provided with a heat exchange plate (7), and the inner side of the cooling box (4) is provided with a filter screen (8) at the side of the heat exchange plate (7).

2. The heat dissipation structure of a liquid crystal display module according to claim 1, characterized in that: The heat dissipation grooves (3) are arranged in two groups on the left and right sides of the rear cover plate (2), and the heat dissipation grooves (3) in each group are distributed at equal intervals.

3. The heat dissipation structure of a liquid crystal display module according to claim 1, characterized in that: The rear cover plate (2) and the cooling box (4) are connected to each other via a through hole (41), and the length and width of the through hole (41) are smaller than the length and width of the cooling box (4).

4. The heat dissipation structure of a liquid crystal display module according to claim 1, characterized in that: The heat dissipation fan (5) and the cooling box (4) are connected to each other via an air supply port.

5. The heat dissipation structure of a liquid crystal display module according to claim 1, characterized in that: Three semiconductor refrigeration sheets (6) are distributed at equal intervals, a fin (61) is provided on the surface of the hot end of the semiconductor refrigeration sheet (6), a cold end of the semiconductor refrigeration sheet (6) extends to the inside of the cooling box (4), and the fins (61) are distributed at equal intervals.

6. The heat dissipation structure of a liquid crystal display module according to claim 1, characterized in that: The heat exchange fins (7) are distributed at equal intervals, one end of the heat exchange fin (7) is fixedly connected to the cold end of the semiconductor refrigeration fin (6), and the other end of the heat exchange fin (7) extends to the outside of the through hole (41).

7. The heat dissipation structure of a liquid crystal display module according to claim 1, characterized in that: The filter screen (8) is composed of a filter screen frame (81) and a desiccant filler (82); filter screens are installed at both ends of the inner side of the filter screen frame (81); and the desiccant filler (82) is arranged between two filter screens on the inner side of the filter screen frame (81).

Images