Dustproof structure of liquid crystal display

Abstract

The utility model discloses a LCD dustproof structure, including rear casing, the cavity in -house top of rear casing is equipped with the rib -plate of one inwards inclined convex, the rib -plate and rear casing roof constitute recess portion between, and the flat plate is connected between rib -plate and bottom plate, and the fan -shaped fin that the one side of flat plate is provided by multiple fin is composed, and its fan heel is located in recess portion. The rib -plate on the close fan heel is equipped with the air outlet, and the dust screen is installed at the hole, and the rib -plate between air outlet and fan heel installs the electric fan, the utility model discloses through the initiative of electric fan and the heat on fan -shaped fin blows outwards, and the airflow can blow the dust on dust screen, and effectively give consideration to heat dissipation and dust prevention, prevent dust screen blockage, improve the heat dissipation efficiency, prolong the service life of display screen.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, specifically to a dustproof structure for liquid crystal displays. Background Technology

[0002] A liquid crystal display (LCD) is an active-matrix liquid crystal display driven by thin-film transistors (TFTs). It primarily uses electrical current to stimulate liquid crystal molecules to create dots, lines, and surfaces, which, in conjunction with backlighting, form the image. As a flat-panel display, LCDs are widely used due to their advantages such as low power consumption, small size, and low radiation, and are currently primarily used in television and computer screens.

[0003] LCD screens generate heat during prolonged use, requiring heat to be dissipated through the casing. However, the heat dissipation outlet becomes an entry point for external dust. Dust entering the LCD screen can affect display quality. Current solutions use dust filters for protection, but these filters tend to accumulate dust and become clogged after long-term use, impacting heat dissipation efficiency. Utility Model Content

[0004] The purpose of this invention is to solve the problems mentioned in the background art by providing a dustproof structure for a liquid crystal display screen that combines heat dissipation and dust prevention in a synergistic manner.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: It provides a dustproof structure for a liquid crystal display screen, including a rear housing. A rib with an inwardly inclined protrusion is provided at the top of the cavity of the rear housing. A groove is formed between the rib and the top plate of the rear housing. A flat plate is connected between the rib and the bottom plate of the rear housing. A fan-shaped fin is provided on one side of the flat plate. The fan-shaped fin is composed of multiple fins. The fan base of the fan-shaped fin is located within the groove. An air outlet is opened on the rib near the fan base. A dustproof net is installed at the air outlet. An electric fan for removing heat from the fan-shaped fin and blowing away dust is installed on the rib between the air outlet and the fan base.

[0006] Furthermore, one end of the fin located at the fan base is arc-shaped, and the fan base cover covers the air intake surface on the back of the fan.

[0007] Furthermore, a mounting bracket is provided on the rib plate, and the electric fan is mounted on the mounting bracket with the air blowing surface of the electric fan facing the air outlet.

[0008] Furthermore, a connecting plate is provided between the flat plate and the fan-shaped fin plate, the fan-shaped fin plate is bonded to the surface of the connecting plate, and the connecting plate is installed on the flat plate by fasteners.

[0009] Furthermore, the dustproof net is made of 80-200 mesh nylon mesh or metal woven mesh.

[0010] Furthermore, the dustproof net is provided with a frame and is detachably installed at the air outlet.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By actively cooling the fan-shaped fins with a dust filter, efficient heat dissipation is achieved while effectively preventing dust from entering, solving the problem of traditional dust filters accumulating dust and clogging, thus affecting heat dissipation. The fan-shaped fins feature an arc-shaped base design that covers the fan's intake surface, concentrating heat and improving airflow path to enhance heat dissipation efficiency.

[0012] 2. The fan-shaped fins are glued and fixed to the flat plate by connecting plates, which is convenient for disassembly and cleaning; the fan is fixed to the ribs by mounting brackets, which makes the structure stable and easy to install. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a vertical sectional view of the center part of the rear housing along the fan base in this utility model; Figure 3 for Figure 2 Enlarged view of section B; Figure 4 This is a schematic diagram of the installation of the electric fan on the rib plate of this utility model; Figure 5 This is a schematic diagram of the back of the rear shell in this utility model.

[0014] In the diagram: 1-rear shell, 2-rib plate, 3-groove, 4-flat plate, 5-fan-shaped fin, 6-dustproof net, 7-electric fan, 8-mounting bracket, 9-connecting plate, 21-air outlet, 51-fin, 52-fan base. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Combination Figures 1 to 5 As shown Figures 1 to 5 As shown, the present invention provides a dustproof structure for a liquid crystal display screen, including a rear housing 1. A rib 2 with an inwardly inclined protrusion is provided at the top of the cavity of the rear housing 1. The rib 2 and the top plate of the rear housing 1 form a groove 3. A flat plate 4 is connected between the rib 2 and the bottom plate of the rear housing 1. A fan-shaped fin 5 is provided on one side of the flat plate 4. The fan-shaped fin 5 is composed of multiple fins 51, and its fan base 52 is provided in the groove 3 (fan base: refers to the part at the bottom of the fan that fixes the fan blades, which is the gripping part when the fan is closed).

[0018] An air outlet 21 is provided on the rib 2 near the fan base 52, and a dustproof net 6 is installed at the air outlet 21. The dustproof net 6 is preferably made of 80-200 mesh nylon mesh or metal woven mesh to effectively block dust while ensuring ventilation efficiency. An electric fan 7 is installed on the rib 2 between the air outlet 21 and the fan base 52. The electric fan 7 is used to remove heat from the fan-shaped fins 5 and blow away the accumulated dust.

[0019] Furthermore, one end of the fin 51 located at the fan base 52 is designed in an arc shape, so that the fan base 52 can cover the air intake surface on the back of the fan 7, thereby optimizing airflow and enhancing heat dissipation and dust removal.

[0020] like Figure 2-3 As shown, the fan base 52 is located at one end of all the fins 51, directly facing the air intake of the fan 7. Its arc-shaped design can more effectively "converge" the heat flowing through all the fins (the fan base 52 serves as a heat convergence point). The arc-shaped fan base 52 "covers" the air intake surface of the fan 7, forcing the fan to blow the heat on the fins 51 outward to the maximum extent when it is working.

[0021] A mounting bracket 8 is provided on the rib plate 2. The electric fan 7 is fixed on the rib plate 2 through the mounting bracket 8, and its blowing surface faces the air outlet 21 to ensure that hot air and dust on the dust filter 6 are effectively blown away.

[0022] A connecting plate 9 is provided between the flat plate 4 and the fan-shaped fin plate 5. The fan-shaped fin plate 5 is fixed to the surface of the connecting plate 9 by adhesive bonding. The connecting plate 9 is installed on the flat plate 4 by fasteners (such as screws) for easy disassembly and maintenance.

[0023] Working principle: When the LCD screen is working, the heat generated is conducted to the fins 51 of the fan-shaped fin plate 5. After the fan 7 starts, it draws in air from the suction surface on its back. The airflow passes through the fan base 52 area of ​​the fan-shaped fin plate, carrying away the heat from the fins. Because the fan base 52 is arc-shaped and covers the suction surface of the fan 7, it can effectively gather heat and guide airflow, improving heat exchange efficiency. Subsequently, the fan blows the hot air towards the air outlet 21 and exhausts it to the outside of the rear housing 1 through the dust filter 6.

[0024] A dust filter 6 is installed at the air outlet 21 to prevent external dust from entering the display screen. Simultaneously, the airflow from the fan 7 blows away the dust accumulated on the filter, preventing it from becoming clogged and maintaining smooth ventilation. This design achieves a self-cleaning function for the cooling airflow, ensuring the dust filter remains effective for a long time.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dustproof structure for a liquid crystal display screen, comprising a rear housing (1), characterized in that: The cavity of the rear housing (1) has an inwardly inclined rib (2) at the top. The rib (2) and the top plate of the rear housing (1) form a groove (3). A flat plate (4) is connected between the rib (2) and the bottom plate of the rear housing (1). A fan-shaped fin (5) is provided on one side of the flat plate (4). The fan-shaped fin (5) is composed of multiple fins (51). The fan base (52) of the fan-shaped fin (5) is located in the groove (3). An air outlet (21) is opened on the rib (2) near the fan base (52). A dustproof net (6) is installed at the air outlet (21). An electric fan (7) is installed on the rib (2) between the air outlet (21) and the fan base (52) to remove heat from the fan-shaped fin (5) and blow away dust.

2. The dustproof structure for a liquid crystal display screen according to claim 1, characterized in that: One end of the fin (51) located at the fan base (52) is arc-shaped, and the fan base (52) covers the air intake surface on the back of the electric fan (7).

3. The dustproof structure for a liquid crystal display screen according to claim 1, characterized in that: A mounting bracket (8) is provided on the rib plate (2), and the electric fan (7) is mounted on the mounting bracket (8), with the blowing surface of the electric fan (7) facing the air outlet (21).

4. The dustproof structure for a liquid crystal display screen according to claim 1, characterized in that: A connecting plate (9) is provided between the flat plate (4) and the fan-shaped fin (5). The fan-shaped fin (5) is bonded to the surface of the connecting plate (9). The connecting plate (9) is installed on the flat plate (4) by fasteners.

5. The dustproof structure for a liquid crystal display screen according to claim 1, characterized in that: The dustproof net (6) is made of 80-200 mesh nylon net or metal woven net.

6. The dustproof structure for a liquid crystal display screen according to claim 1, characterized in that: The dustproof net (6) is provided with a frame and is detachably installed at the air outlet (21).

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