Heat dissipation structure and display device

Abstract

The utility model discloses a heat dissipation structure and a display device, belonging to the technical field of display devices, comprising a heat dissipation cavity and a heat dissipation fan, wherein the heat dissipation fan is arranged in the heat dissipation cavity, and the heat dissipation fan can suck external air through an air inlet for heat dissipation, an air inlet flow channel is arranged at the air inlet, and the air inlet flow channel is inclined with respect to a horizontal plane, and the air inlet flow channel has a head end and a tail end, the head end is close to the heat dissipation cavity, and the tail end is far away from the heat dissipation cavity, and the height of the head end on the horizontal plane is higher than that of the tail end, and water droplets dripping on the air inlet flow channel will flow downward along the air inlet flow channel under the action of gravity to stay away from the heat dissipation cavity, thereby preventing water droplets from invading the heat dissipation cavity from the air inlet flow channel.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, and in particular to a heat dissipation structure and a display device. Background Art

[0002] LED display screens have been widely used in advertising media, stage performances, public displays and other fields due to their excellent brightness, color saturation and visual effects. As the resolution and brightness requirements of display screens continue to increase, the power consumption is also increasing, which causes the power box to generate a lot of heat during operation. In order to ensure the long-term stable operation of the power supply system and avoid performance degradation or even damage caused by overheating, the existing LED display screen power box is usually equipped with heat dissipation holes to timely discharge the internal heat.

[0003] However, in rainy and humid climates, rainwater may enter the power box through the heat dissipation holes, which can easily cause a series of safety hazards such as short circuits and leakage. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a heat dissipation structure and a display device to solve the problem that the heat dissipation and waterproofing of the power box of the current LED display screen cannot be taken into account at the same time.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A heat dissipation structure comprises a heat dissipation cavity and a heat dissipation fan;

[0007] The heat dissipation fan is arranged in the heat dissipation cavity;

[0008] The heat dissipation cavity is provided with an air inlet connected to the outside, and the air inlet is provided with an air inlet channel inclined to the horizontal plane. The air inlet channel is located on the air inlet side of the heat dissipation fan, and the air inlet channel has a head end and a tail end, the head end is close to the heat dissipation cavity, and the tail end is far away from the heat dissipation cavity, and the height of the head end on the horizontal plane is higher than the height of the tail end.

[0009] Preferably, it further comprises a plurality of heat dissipation fins, and part or all of the heat dissipation fins are arranged in the heat dissipation cavity.

[0010] Preferably, the heat dissipation cavity is provided with an exhaust port connected to the outside, one end of the heat dissipation fin is located in the heat dissipation cavity, and the other end of the heat dissipation fin extends to the outside of the exhaust port.

[0011] Preferably, the heat dissipation fins are located on the exhaust side of the heat dissipation fan.

[0012] Preferably, it also includes a base and a cover plate, the base is provided with an air inlet cavity, an installation cavity and an exhaust cavity which are connected in sequence, the air inlet flow channel is arranged in the air inlet cavity, the cooling fan is arranged in the installation cavity, the cooling fins are arranged in the exhaust cavity, the cover plate is arranged to cover the openings of the air inlet cavity, the installation cavity and the exhaust cavity, and the heat dissipation cavity is formed between the cover plate, the air inlet cavity, the installation cavity and the exhaust cavity.

[0013] Preferably, a plurality of guide blocks are provided on the bottom surface of the air inlet cavity, and the air inlet flow channel is formed between the guide blocks, the cover plate and the bottom surface of the air inlet cavity.

[0014] Preferably, there are two air inlet concave cavities, and the two air inlet concave cavities are respectively located on both sides of the installation concave cavity.

[0015] Preferably, the plane where the air inlet hole of the heat dissipation fan is located is coplanar with the bottom surface of the air inlet cavity.

[0016] Preferably, the heat dissipation fan is a centrifugal fan.

[0017] In order to solve the same technical problem, the utility model also provides a display device, including the heat dissipation structure as described above.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The cooling fan is arranged in the cooling cavity. The cooling fan can draw outside air through the air inlet for cooling. An air inlet flow channel is arranged at the air inlet. The air inlet flow channel is inclined with respect to the horizontal plane. The air inlet flow channel has a head end and a tail end. The head end is close to the cooling cavity, and the tail end is far away from the cooling cavity. The height of the head end on the horizontal plane is higher than that of the tail end. Water droplets dripping on the air inlet flow channel will flow downward along the air inlet flow channel under the action of gravity to stay away from the cooling cavity. This can prevent water droplets from invading the cooling cavity from the air inlet flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the front structure of the base of the heat dissipation structure of the utility model;

[0021] Figure 2 It is a side view schematic diagram of the heat dissipation structure of the utility model;

[0022] Figure 3 It is a schematic diagram of the back structure of the base of the heat dissipation structure of the utility model;

[0023] Figure 4 It is a partial exploded schematic diagram of the heat dissipation structure of the utility model;

[0024] Figure 5It is an exploded schematic diagram of the heat dissipation structure of the utility model;

[0025] Figure 6 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0026] In the figure: 10, base; 11, air inlet cavity; 111, air inlet flow channel; 112, guide block; 12, installation cavity; 13, exhaust cavity; 14, front; 15, back; 20, cover; 30, heat dissipation cavity; 31, air inlet; 32, air exhaust; 40, cooling fan; 41, air inlet hole; 42, air exhaust hole; 50, heat dissipation fin. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] Example 1

[0031] Combination Figure 1 , Figure 2 and Figure 4 , schematically shows the heat dissipation structure of the present invention, including a heat dissipation cavity 30 and a heat dissipation fan 40. The heat dissipation cavity 30 can be connected to a heat generating component in an LED display screen, and the heat generating component conducts heat to the heat dissipation cavity 30.

[0032] The heat dissipation fan 40 is disposed in the heat dissipation cavity 30 , and the heat dissipation cavity 30 is provided with an air inlet 31 connected to the outside. When the heat dissipation fan 40 is started, the heat dissipation fan 40 draws air from the outside through the air inlet 31 for heat dissipation.

[0033] An air inlet channel 111 is provided at the air inlet 31 and is arranged obliquely with respect to the horizontal plane. The air inlet channel 111 is located at the air inlet side of the heat dissipation fan 40. The end of the air inlet channel 111 close to the heat dissipation cavity 30 is higher than the end of the air inlet channel 111 close to the outside. In other words, the air inlet channel 111 has a head end and a tail end. The head end is close to the heat dissipation cavity 30, and the tail end is far away from the heat dissipation cavity 30. The height of the head end on the horizontal plane is higher than the height of the tail end. When raindrops fall on the air inlet 31, the raindrops will flow downward along the air inlet channel 111 under the action of gravity, and gradually move away from the heat dissipation cavity 30, so that the raindrops can be prevented from invading the heat dissipation cavity 30 and damaging the heat dissipation fan 40.

[0034] In order to improve the heat dissipation performance, the heat dissipation structure further includes a plurality of heat dissipation fins 50, part or all of which are disposed in the heat dissipation cavity 30. After the heat dissipation fan 40 is started, forced ventilation is performed, and the flowing air flows through the heat dissipation fins 50 to take away the heat on the heat dissipation fins 50. In this embodiment, there are a plurality of heat dissipation fins 50, and the plurality of heat dissipation fins 50 are all plate-shaped and parallel to each other.

[0035] Preferably, the heat dissipation fins 50 are arranged on the air inlet side of the heat dissipation fan 40 , and the heat dissipation fan 40 draws external air through the air inlet 31 . After the air enters the heat dissipation cavity 30 through the air inlet 31 , it first flows through the heat dissipation fins 50 and then flows to the heat dissipation fan 40 .

[0036] Example 2

[0037] Combination Figures 1 to 6 As shown, the difference between this embodiment and embodiment 1 is that the heat dissipation fins 50 are located on the exhaust side of the heat dissipation fan 40, and the heat dissipation fan 40 draws air from the outside through the air inlet 31. The air first flows through the heat dissipation fan 40 and then flows to the heat dissipation fins 50. The advantage of this solution is that the air can first dissipate heat for the driving motor of the heat dissipation fan 40, ensuring the stable operation of the heat dissipation fan 40.

[0038] Specifically, Figure 1 and Figure 4 The heat dissipation cavity 30 is provided with an exhaust port 32 connected to the outside. One end of the heat dissipation fin 50 is located in the heat dissipation cavity 30, and the other end of the heat dissipation fin 50 extends to the outside of the exhaust port 32. The heated air in the heat dissipation cavity 30 is discharged to the outside through the exhaust port 32. The heat dissipation fin 50 is penetrated through the exhaust port 32, which can make the movement direction of the hot air discharged from the exhaust port 32 more regular, so as to reduce turbulence and improve the heat dissipation efficiency of the heat dissipation structure.

[0039] Furthermore, the heat dissipation structure of the present invention further includes a base 10 and a cover plate 20. Figures 4 to 6 As shown, the base 10 has a front side 14 and a back side 15. The back side 15 of the base 10 is used to fit the heat generating component. The front side 14 of the base 10 is provided with an air inlet cavity 11, a mounting cavity 12 and an exhaust cavity 13 which are connected in sequence. An air inlet channel 111 is provided in the air inlet cavity 11, a heat dissipation fan 40 is provided in the mounting cavity 12, and a heat dissipation fin 50 is provided in the exhaust cavity 13. Driven by the heat dissipation fan 40, air flows through the air inlet cavity 11, the mounting cavity 12 and the exhaust cavity 13 in sequence. There are two air inlet cavities 11, and the two air inlet cavities 11 are respectively located on both sides of the mounting cavity 12. The provision of two air inlet cavities 11 can effectively increase the air intake, so that the heat dissipation of the heat dissipation structure is greater.

[0040] like Figure 4 The cover plate 20 is detachably provided to cover the opening of the air inlet cavity 11, the opening of the installation cavity 12 and the opening of the exhaust cavity 13. By removing the cover plate 20, the interior of the air inlet cavity 11, the installation cavity 12 and the exhaust cavity 13 can be exposed to the outside, so that maintenance personnel can perform maintenance operations on the air inlet channel 111, the heat dissipation fan 40 and the heat dissipation fins 50. A heat dissipation cavity 30 is formed between the cover plate 20, the air inlet cavity 11, the installation cavity 12 and the exhaust cavity 13, and the exhaust port 32 is located at one end of the exhaust cavity 13.

[0041] Among them, Figure 6 A plurality of guide blocks 112 are provided on the bottom surface of the air inlet cavity 11, and an air inlet flow channel 111 is formed between the guide blocks 112, the cover plate 20 and the bottom surface of the air inlet cavity 11. The guide blocks 112 are arranged obliquely with respect to the horizontal plane, and the higher end of the guide blocks 112 is close to the cooling fan 40, and the lower end of the guide blocks 112 is close to the outside world. The guide blocks 112 can guide raindrops dripping thereon to the outside world.

[0042] The plane where the air inlet hole 41 of the heat dissipation fan 40 is located is coplanar with the bottom surface of the air inlet cavity 11, so as to avoid the formation of steps and turbulence between the heat dissipation fan 40 and the air inlet cavity 11, thereby affecting the air flow rate. The heat dissipation fan 40 is preferably a centrifugal fan, and the air flow direction blown by the centrifugal fan is more regular. The exhaust hole 42 of the heat dissipation fan 40 is arranged opposite to the end of the heat dissipation fin 50, so that the air blown by the heat dissipation fan 40 can flow along the extension direction of the heat dissipation fin 50 to absorb the heat on the heat dissipation fin 50.

[0043] Example 3

[0044] In order to solve the same technical problem, this embodiment discloses a display device, including a power supply component and the heat dissipation structure as described above, wherein the power supply component is attached to a base 10 of the heat dissipation structure to transfer heat to the base 10 .

[0045] To summarize, the cooling fan 40 is disposed in the cooling cavity 30, and the cooling fan 40 can draw outside air through the air inlet 31 for cooling, and an air inlet channel 111 is disposed at the air inlet 31, and the air inlet channel 111 is inclined with respect to the horizontal plane, and the air inlet channel 111 has a head end and a tail end, the head end is close to the cooling cavity 30, and the tail end is away from the cooling cavity 30, and the height of the head end on the horizontal plane is higher than the height of the tail end, and water droplets dripping on the air inlet channel 111 will flow downward along the air inlet channel 111 under the action of gravity to stay away from the cooling cavity 30, which can prevent water droplets from invading the cooling cavity 30 from the air inlet channel 111.

[0046] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat dissipation structure, characterized in that: Including a heat dissipation cavity and a heat dissipation fan; The heat dissipation fan is arranged in the heat dissipation cavity; The heat dissipation cavity is provided with an air inlet connected to the outside world, and the air inlet is provided with an air inlet channel inclined to the horizontal plane. The air inlet channel is located on the air inlet side of the heat dissipation fan, and the air inlet channel has a head end and a tail end, the head end is close to the heat dissipation cavity, and the tail end is far away from the heat dissipation cavity, and the height of the head end on the horizontal plane is higher than the height of the tail end.

2. The heat dissipation structure according to claim 1, characterized in that: It also includes a plurality of heat dissipation fins, and part or all of the heat dissipation fins are arranged in the heat dissipation cavity.

3. The heat dissipation structure according to claim 2, characterized in that: The heat dissipation cavity is provided with an exhaust port connected to the outside, one end of the heat dissipation fin is located in the heat dissipation cavity, and the other end of the heat dissipation fin extends to the outside of the exhaust port.

4. The heat dissipation structure according to any one of claims 2 to 3, characterized in that: The heat dissipation fins are located on the exhaust side of the heat dissipation fan.

5. The heat dissipation structure according to claim 3, characterized in that: It also includes a base and a cover plate, the base is provided with an air inlet cavity, a mounting cavity and an exhaust cavity which are connected in sequence, the air inlet flow channel is provided in the air inlet cavity, the heat dissipation fan is provided in the mounting cavity, the heat dissipation fins are provided in the exhaust cavity, the cover plate is provided to cover the openings of the air inlet cavity, the mounting cavity and the exhaust cavity, and the heat dissipation cavity is formed between the cover plate, the air inlet cavity, the mounting cavity and the exhaust cavity.

6. The heat dissipation structure according to claim 5, characterized in that: The bottom surface of the air inlet cavity is provided with a plurality of guide blocks, and the air inlet flow channel is formed between the guide blocks, the cover plate and the bottom surface of the air inlet cavity.

7. The heat dissipation structure according to claim 5, characterized in that: There are two air inlet concave cavities, and the two air inlet concave cavities are respectively located on both sides of the installation concave cavity.

8. The heat dissipation structure according to claim 5, characterized in that: The plane where the air inlet hole of the heat dissipation fan is located is coplanar with the bottom surface of the air inlet cavity.

9. The heat dissipation structure according to claim 1, characterized in that: The heat dissipation fan is a centrifugal fan.

10. A display device, characterized in that: It comprises the heat dissipation structure as claimed in any one of claims 1 to 9.

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