Outdoor display screen heat dissipation device

Abstract

The utility model discloses an outdoor display screen heat dissipation device which comprises a protective shell arranged outside a display screen, a transparent glass panel arranged on the front side and a rear shell arranged on the rear side, an installation support is arranged on the inner side wall of the rear shell to fix the display screen, and a heat dissipation box is fixedly arranged outside the rear shell. According to the outdoor display screen heat dissipation device, through the synergistic effect of the axial flow fan, the heat dissipation fin set, the heat absorption copper plate, the semiconductor chilling plate and the snakelike heat conduction copper pipe, heat generated by a display screen can be rapidly and effectively dissipated out, and compared with a traditional heat dissipation mode, the heat dissipation efficiency is greatly improved; and the stability of the display screen working for a long time is ensured.

Description

Technical Field

[0001] This utility model relates to the field of display screen heat dissipation technology, specifically an outdoor display screen heat dissipation device. Background Technology

[0002] With the rapid development of information technology, outdoor displays have been widely used in advertising, information dissemination, and traffic guidance. Outdoor displays generate a lot of heat during prolonged operation. If this heat is not dissipated effectively and promptly, the temperature of the internal electronic components will rise, affecting the display quality and lifespan. In severe cases, it can even damage components, causing the display to malfunction.

[0003] Currently, most outdoor display screen cooling devices on the market employ simple natural cooling or single-fan cooling methods. Natural cooling is greatly affected by environmental factors and has low cooling efficiency, making it difficult to meet the cooling needs of the display screen in high-temperature environments. While single-fan cooling can accelerate airflow and remove some heat, in dusty outdoor environments, the fan easily attracts dust, causing the fan blades to rotate obstructed. This not only reduces the cooling effect but also increases the risk of equipment failure. In addition, traditional open ventilation holes pose a risk of rainwater corrosion to internal components when used outdoors. Utility Model Content

[0004] To address the shortcomings mentioned in the background section, the present invention aims to provide an outdoor display screen heat dissipation device that solves the problems of low heat dissipation efficiency and poor dust and water resistance of existing outdoor display screen heat dissipation devices.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An outdoor display screen heat dissipation device includes a protective housing disposed outside the display screen, comprising a transparent glass panel disposed on the front side and a rear shell disposed on the rear side. The inner sidewall of the rear shell is provided with a mounting bracket to fix the display screen. A heat dissipation box is fixedly disposed on the outside of the rear shell, and a heat dissipation component is disposed inside the heat dissipation box. An air inlet and an air outlet are respectively opened on opposite sides of the heat dissipation box. A removable dustproof component is provided at the air inlet and a guide grille is provided at the air outlet.

[0007] More preferably, the heat dissipation assembly includes: an axial fan and a heat dissipation fin assembly arranged sequentially along the air duct direction, wherein the axis of the axial fan coincides with the center line of the air inlet; a heat-absorbing copper plate is attached to the inner wall of the rear shell, and a thermoelectric cooler is disposed on the side of the heat-absorbing copper plate facing away from the display screen; the cold end of the thermoelectric cooler is tightly attached to the heat-absorbing copper plate through thermal grease, and the hot end of the thermoelectric cooler is connected to a serpentine thermally conductive copper pipe, which penetrates the side wall of the rear shell and is welded to the heat dissipation fin assembly.

[0008] More preferably, an inclined guide channel is provided inside the rear shell and below the heat-absorbing copper plate, and a drain hose is connected to the lowest point of the guide channel. A water storage tank with a water level observation window is provided at the bottom of the heat dissipation box, and the outlet end of the drain hose extends to the upper part of the inner cavity of the water storage tank. A drain outlet is provided on the lower part of the side wall of the water storage tank, and a sealing plug is threaded to the drain outlet.

[0009] More preferably, the detachable dustproof assembly includes a filter plate installed inside the heat dissipation box, the top of the heat dissipation box has an installation groove adapted to the shape of the filter plate, and a pressure plate is rotatably installed on the top of the heat dissipation box, the pressure plate being used to restrict the vertical displacement of the filter plate.

[0010] More preferably, the detachable dustproof assembly further includes a pull rod that slides through the top wall of the heat dissipation box. A nylon brush body is fixedly connected to the bottom of the pull rod. The working surface of the nylon brush body maintains a 1-2mm gap with the outer surface of the filter plate. An anti-slip handle is provided at the top of the pull rod. A return spring is sleeved on the outer surface of the pull rod. The two ends of the return spring are respectively connected to the brush bar and the top wall of the heat dissipation box.

[0011] More preferably, the outer surface of the rear shell is provided with a reflective coating, and the inner surface of the rear shell is bonded with an aerogel heat insulation film layer.

[0012] The beneficial effects of this utility model are:

[0013] 1. This utility model, through the synergistic effect of axial fan, heat dissipation fin assembly, heat-absorbing copper plate, semiconductor cooling chip and serpentine heat-conducting copper pipe, can quickly and effectively dissipate the heat generated by the display screen. Compared with traditional heat dissipation methods, it greatly improves heat dissipation efficiency and ensures the stability of the display screen under long-term operation.

[0014] 2. The detachable dustproof component at the air inlet of this utility model effectively blocks dust from entering and prevents dust from damaging the heat dissipation components and the display screen; the air outlet guide grille can prevent rainwater from flowing back in, while the inclined guide channel and water storage tank inside the rear shell can collect and treat condensate in time, preventing condensate from flowing back into the display screen, improving the waterproof performance of the device and extending the service life of the display screen.

[0015] 3. The reflective coating on the outer surface of the back shell and the aerogel heat insulation film on the inner surface of this utility model can effectively block the entry of external heat and the diffusion of internal heat, further optimizing the heat dissipation effect and reducing the impact of the display screen on changes in ambient temperature. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the rear shell structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the heat sink structure in this utility model;

[0020] Figure 4 This is a cross-sectional view of the rear shell structure in this utility model.

[0021] In the picture:

[0022] 1. Protective housing; 2. Transparent glass panel; 3. Rear shell; 4. Mounting bracket; 5. Heat sink box; 6. Air inlet; 7. Air outlet; 8. Airflow guide grille; 9. Axial fan; 10. Heat dissipation fin assembly; 11. Heat-absorbing copper plate; 12. Semiconductor cooling chip; 13. Serpentine heat-conducting copper pipe; 14. Airflow guide groove; 15. Drain hose; 16. Water storage tank; 17. Drain outlet; 18. Sealing plug; 19. Filter plate; 20. Mounting groove; 21. Pressure plate; 22. Pull rod; 23. Nylon brush body; 24. Anti-slip handle; 25. Return spring; 26. Reflective coating; 27. Aerogel heat insulation film layer. Detailed Implementation

[0023] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] like Figure 1-4 As shown, an outdoor display screen heat dissipation device includes:

[0026] A protective housing is installed outside the display screen, comprising a transparent glass panel on the front and a rear shell on the back. The transparent glass panel protects the display screen and ensures the normal display of content. A mounting bracket is installed on the inner wall of the rear shell to secure the display screen and ensure stable installation within the protective housing. A heat sink is fixedly installed on the outside of the rear shell, housing a heat dissipation assembly. The heat sink has air inlets and outlets on opposite sides. A removable dustproof component is installed at the air inlet, and a deflector grille is installed at the air outlet. The removable dustproof component effectively prevents dust from entering the heat sink, avoiding interference with the normal operation of the heat dissipation assembly. The deflector grille guides the exhaust air, ensuring smoother airflow.

[0027] The heat dissipation assembly includes an axial fan and a heat sink fin assembly arranged sequentially along the airflow direction, with the axis of the axial fan coinciding with the center line of the air inlet. When the axial fan operates, it draws in external air from the air inlet and propels the air through the heat sink fin assembly, accelerating airflow and improving heat dissipation efficiency. A heat-absorbing copper plate is fitted to the inner wall of the rear housing. A thermoelectric cooler is positioned on the side of the heat-absorbing copper plate facing away from the display screen. The cold end of the thermoelectric cooler is tightly bonded to the heat-absorbing copper plate with thermal grease, while the hot end is connected to a serpentine heat-conducting copper pipe that penetrates the side wall of the rear housing and is welded to the heat sink fin assembly. The heat-absorbing copper plate quickly absorbs the heat generated by the display screen and further reduces the temperature through the cooling effect of the thermoelectric cooler. The heat generated at the hot end of the thermoelectric cooler is transferred to the heat sink fin assembly through the serpentine heat-conducting copper pipe, and the heat is dissipated by the airflow driven by the axial fan.

[0028] An inclined guide channel is located inside the rear casing, below the heat-absorbing copper plate. A drain hose is connected to the lowest point of the guide channel. A water storage tank with a water level observation window is located at the bottom of the heat dissipation box. The outlet end of the drain hose extends to the upper part of the inner cavity of the water storage tank. A drain outlet is located on the lower part of the side wall of the water storage tank, and a sealing plug is threaded onto the drain outlet. The inclined guide channel guides the condensate generated on the surface of the heat-absorbing copper plate into the drain hose and then into the water storage tank. The water level observation window allows users to observe the water level in the water storage tank. When drainage is needed, the water in the water storage tank can be drained by opening the sealing plug.

[0029] The detachable dustproof assembly includes a filter plate installed inside the heat dissipation box. The top of the heat dissipation box has a mounting groove adapted to the shape of the filter plate. A pressure plate is rotatably mounted on the top of the heat dissipation box to limit the vertical displacement of the filter plate. The pressure plate fixes the filter plate in the mounting groove, facilitating disassembly and cleaning of the filter plate and ensuring dustproof performance. The detachable dustproof assembly also includes a sliding rod that slides through the top wall of the heat dissipation box. A nylon brush body is fixedly connected to the bottom of the rod, with a 1-2mm gap between the working surface of the nylon brush body and the outer surface of the filter plate. A non-slip handle is provided at the top of the rod, and a return spring is fitted onto the outer surface of the rod. The two ends of the return spring are respectively connected to the brush bar and the top wall of the heat dissipation box. Pulling the rod allows the nylon brush body to clean the dust on the surface of the filter plate. After cleaning, the rod automatically returns to its original position under the action of the return spring, providing convenience and speed.

[0030] The outer surface of the back cover is coated with a reflective coating that reflects sunlight, reducing the heat absorbed by the back cover and lowering its temperature. The inner surface of the back cover is covered with an aerogel heat insulation film. The aerogel heat insulation film has excellent heat insulation properties, which can effectively prevent external heat from entering the display screen and also prevent heat from spreading outward from the display screen, further improving the heat dissipation effect.

[0031] Workflow

[0032] When the outdoor display screen is working, the heat generated by the display screen is first absorbed by the heat-absorbing copper plate attached to the inner wall of the back shell. The heat-absorbing copper plate transfers the heat to the cold end of the semiconductor cooling chip through thermal grease. When the semiconductor cooling chip is working, the heat generated by its hot end is transferred to the heat dissipation fin assembly through the serpentine thermal conductive copper pipe.

[0033] Simultaneously, the axial fan starts, drawing in outside air through the air inlet. The filter plate at the air inlet filters the air, preventing dust from entering the heatsink. Driven by the axial fan, the air passes through the heatsink fins, carrying away the heat from the fins, and finally is exhausted through the airflow guide grille at the air outlet.

[0034] During the heat absorption process of the copper plate, condensation will form on its surface. Under the influence of gravity, the condensation flows along the inclined guide channel into the drain hose and then into the water storage tank. When the water level in the storage tank reaches a certain height, the user can observe the water level through the observation window and open the sealing plug of the drain outlet to drain the accumulated water.

[0035] When it is necessary to clean the dust on the surface of the filter plate, the user holds the non-slip handle at the top of the lever and pulls the lever upward. The lever moves the nylon brush body upward, and the nylon brush body cleans the dust on the surface of the filter plate. After cleaning, the user releases the lever, and the lever and nylon brush body automatically return to their original positions under the action of the return spring.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An outdoor display screen heat dissipation device, characterized in that, The device includes a protective housing disposed outside the display screen, comprising a transparent glass panel disposed on the front side and a rear shell disposed on the rear side. The inner sidewall of the rear shell is provided with a mounting bracket to fix the display screen. A heat dissipation box is fixedly disposed on the outside of the rear shell, and a heat dissipation component is disposed inside the heat dissipation box. The heat dissipation box has an air inlet and an air outlet on opposite sides. The air inlet is equipped with a detachable dustproof component and the air outlet is equipped with a guide grille.

2. The outdoor display screen heat dissipating device of claim 1, wherein, The heat dissipation assembly includes: an axial fan and a heat dissipation fin assembly arranged sequentially along the air duct direction, wherein the axis of the axial fan coincides with the center line of the air inlet; a heat-absorbing copper plate is attached to the inner wall of the rear shell, and a thermoelectric cooler is arranged on the side of the heat-absorbing copper plate facing away from the display screen. The cold end of the thermoelectric cooler is tightly attached to the heat-absorbing copper plate through thermal grease, and the hot end of the thermoelectric cooler is connected to a serpentine thermally conductive copper pipe, which penetrates the side wall of the rear shell and is welded to the heat dissipation fin assembly.

3. The outdoor display screen heat dissipation device of claim 2, wherein, An inclined guide channel is provided inside the rear shell and below the heat-absorbing copper plate. A drain hose is connected to the lowest point of the guide channel. A water storage tank with a water level observation window is provided at the bottom of the heat dissipation box. The outlet end of the drain hose extends to the upper part of the inner cavity of the water storage tank. A drain outlet is provided on the lower part of the side wall of the water storage tank. A sealing plug is threadedly connected to the drain outlet.

4. The outdoor display screen heat dissipating device of claim 1, wherein, The detachable dustproof assembly includes a filter plate installed inside the heat dissipation box. The top of the heat dissipation box has an installation groove adapted to the shape of the filter plate. A pressure plate is rotatably installed on the top of the heat dissipation box, and the pressure plate is used to limit the vertical displacement of the filter plate.

5. The outdoor display screen heat dissipating device of claim 4, wherein, The detachable dustproof assembly also includes a pull rod that slides through the top wall of the heat dissipation box. A nylon brush body is fixedly connected to the bottom of the pull rod. The working surface of the nylon brush body maintains a 1-2mm gap with the outer surface of the filter plate. An anti-slip handle is provided at the top of the pull rod. A return spring is sleeved on the outer surface of the pull rod. The two ends of the return spring are respectively connected to the brush bar and the top wall of the heat dissipation box.

6. The outdoor display screen heat dissipating device of claim 1, wherein, The outer surface of the rear shell is provided with a reflective coating, and the inner surface of the rear shell is bonded with an aerogel heat insulation film layer.

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