Display screen heat dissipation device and display equipment

Abstract

The utility model discloses a display screen heat dissipation device and a display device, the display screen heat dissipation device comprises a heat dissipation assembly and a phase change layer, the heat dissipation assembly is used for contacting with a heating unit of a display screen, the heat dissipation assembly comprises a shell, a cavity is arranged in the shell, and the cavity is used for accommodating a liquid phase change working medium; the phase change layer makes contact with the heat dissipation assembly and is connected with the cavity so that the liquid phase change working medium can enter the phase change layer. The liquid phase change working medium in the heat dissipation assembly enters the phase change layer, the liquid phase change working medium of the phase change layer exceeds the preset temperature and is converted into the gas state from the liquid state in the operation temperature rising process of the heat dissipation assembly making contact with the heating unit, heat of the heating unit and the surrounding environment is absorbed in the vaporization process, and the heat dissipation effect is achieved; when the heating unit is in a non-operation state, the phase change layer absorbs moisture of the external environment to facilitate recycling, it can be guaranteed that the heating unit always keeps a proper operation temperature, the heat dissipation effect is good, and the display screen is suitable for long-time operation and low in cost.

Description

Technical Field

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

[0002] LED display screens are used in many fields. The heat generated when the LED display screen is working will cause the temperature of the LED panel lamp surface to rise, resulting in problems such as bluish or local color blocks on the lamp surface, and affecting the user experience.

[0003] Based on the above reasons, how to keep the display screen lamp surface or power supply at a low temperature and meet the needs of ultra-long-term use of the display screen has become a problem to be solved at present. The utility model proposes a new solution to the above problem. Utility Model Content

[0004] In order to overcome at least one of the above-mentioned disadvantages, the present invention provides a display screen heat dissipation device and a display device. The purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] In a first aspect of the present invention, a display screen heat dissipation device is provided, the display screen heat dissipation device comprising:

[0006] A heat dissipation component, the heat dissipation component is used to contact the heating unit of the display screen, the heat dissipation component includes a shell, a cavity is opened in the shell, and the cavity is used to accommodate a liquid phase change medium;

[0007] A phase change layer, the phase change layer is in contact with the heat dissipation component, and the phase change layer is connected to the cavity so that the liquid phase change medium enters the phase change layer;

[0008] When the temperature of the liquid phase-change medium in the phase-change layer is higher than a preset temperature, the liquid phase-change medium is converted from a liquid state to a gaseous state.

[0009] In one possible implementation manner, a first channel is provided on a contact surface of the shell for contacting the phase change layer, and the liquid phase change medium in the cavity enters the phase change layer through the first channel.

[0010] In one possible implementation, the cavity includes at least two flow channels, at least two of the flow channels are connected, the number of groups of the first channels corresponds to the flow channels, and each group of the first channels is arranged along an extension direction of the corresponding flow channel.

[0011] In one possible implementation, a breathable net is provided on the first channel, and the first channel is located in the edge projection area of ​​the breathable net, so as to form a stop for the phase change layer in the direction in which the phase change layer moves toward the cavity.

[0012] In one possible implementation manner, a fluid infusion port is provided on the shell, and the fluid infusion port is communicated with the cavity.

[0013] In one possible implementation, the display screen heat dissipation device also includes a liquid replenishing device, which includes a liquid storage container, an infusion tube, a liquid pump and an injection head. The liquid storage container is connected to the injection head through the infusion tube, and the injection head is used to connect to the liquid replenishing port and transport the liquid phase change working medium in the liquid storage container into the cavity through the liquid replenishing port.

[0014] In one possible implementation, the display screen heat dissipation device further includes a liquid level detection device, which is disposed in the cavity and is used to detect the liquid level of the liquid phase change medium in the cavity, and the liquid level detection device is connected to the liquid replenishing device.

[0015] In one possible implementation, the phase change layer is in contact with the housing; and / or,

[0016] The display screen heat dissipation device also includes a shell, the phase change layer is located in the shell, a second channel corresponding to the first channel is opened on the shell, and the phase change layer is connected to the cavity through the first channel and the second channel.

[0017] In one possible implementation, the heating unit is a panel module and / or a power supply, and the connection method between the heating unit and the heat dissipation component is at least one of magnetic attraction, bolts, snaps, and bonding.

[0018] A second aspect of the present invention provides a display device, comprising any one of the above display screen heat dissipation devices.

[0019] Beneficial technical effects of the utility model: According to the contents of the present disclosure, the display screen heat dissipation device and the display device enter the phase change layer through the liquid phase change medium in the heat dissipation component. When the heat dissipation component in contact with the heating unit is in the process of heating up, the liquid phase change medium in the phase change layer exceeds the preset temperature and is converted from liquid to gas. During the vaporization process, it absorbs heat from the heating unit and the surrounding environment to achieve the effect of heat dissipation. When the heating unit is not in operation, the phase change layer absorbs moisture from the external environment for easy recycling, which can ensure that the heating unit always maintains a suitable operating temperature, has good heat dissipation effect, and is low in cost. It is suitable for long-term operation of the display screen, can ensure the consistency of the temperature of the entire display screen, improve the display quality and color stability of the display screen, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the accompanying drawings, the following are given by way of example and not limitation:

[0021] Figure 1A cross-sectional view of the display screen structure of the utility model is shown;

[0022] Figure 2 A schematic diagram of the heat dissipation assembly structure of the utility model is shown;

[0023] Figure 3 A structural cross-sectional view of a heat dissipation assembly of the utility model at one angle is shown;

[0024] Figure 4 A structural cross-sectional view of the heat dissipation assembly of the utility model from another angle is shown;

[0025] Figure 5 A partial structural schematic diagram of the water replenishing device of the utility model is shown.

[0026] In the figure:

[0027] 100. heating unit; 200. display device;

[0028] 1. Heat dissipation component; 2. Phase change layer;

[0029] 11. Shell; 12. Cavity; 13. First channel; 14. Fluid infusion port; 31. Infusion tube; 32. Fluid injection head; 41. Liquid level detection probe. DETAILED DESCRIPTION

[0030] In the following detailed disclosure, these embodiments are fully described with reference to the drawings. In order to make the technical scheme of the utility model more clear and specific to those skilled in the art, the implementation methods described below are not limited to this. The utility model is further described in detail below in combination with the embodiments and drawings.

[0031] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the present invention.

[0033] The first aspect of the utility model is as follows Figure 1 and Figure 2 As shown, a display screen heat dissipation device is provided, which includes a heat dissipation component 1 and a phase change layer 2. The heat dissipation component 1 is used to contact the heating unit 100 of the display screen. The heat dissipation component 1 includes a shell 11. A cavity 12 is opened in the shell 11. The cavity 12 is used to accommodate a liquid phase change medium. The phase change layer 2 is in contact with the heat dissipation component 1, and the phase change layer 2 is connected to the cavity 12 so that the liquid phase change medium enters the phase change layer 2. When the temperature of the liquid phase change medium in the phase change layer is higher than a preset temperature, the liquid phase change medium is converted from a liquid state to a gas state.

[0034] The display screen heat dissipation device allows the liquid phase change medium in the heat dissipation component 1 to enter the phase change layer 2. When the heat dissipation component 1 in contact with the heating unit 100 is in operation and the temperature is increased, the liquid phase change medium in the phase change layer 2 exceeds the preset temperature and is converted from liquid to gas. During the vaporization process, it absorbs the heat of the heating unit 100 and the surrounding environment to achieve the heat dissipation effect. When the heating unit 100 is not in operation, the phase change layer 2 absorbs moisture from the external environment for easy recycling, which can ensure that the heating unit 100 always maintains a suitable operating temperature, has a good heat dissipation effect, is suitable for long-term operation of the display screen, has low cost, and is suitable for long-term operation of the display screen. It can ensure the consistency of the temperature of the entire display screen, improve the display quality and color stability of the display screen, extend the service life, and can greatly improve user satisfaction.

[0035] When the temperature is higher than the preset temperature, the liquid phase change medium in the phase change layer 2 vaporizes and absorbs the heat from the surrounding environment, thereby reducing the temperature of the heating unit 100. The display screen heat dissipation device has a simple structure, is easy to use, has a good cooling effect, and has certain economy and practicality.

[0036] In this embodiment, the liquid phase change working fluid is liquid water as an example, and the phase change layer 2 is made of an aqueous phase change material, and the aqueous phase change material can be an ice skin heat dissipation film. In specific implementation, when the shell temperature of the heating unit 100, that is, the panel module and / or the power supply is higher than 40°C, the liquid water in the aqueous phase change material begins to volatilize and absorb heat; when the shell temperature of the panel module and / or the power supply is lower than 35°C, the aqueous phase change material begins to absorb moisture to ensure that the aqueous phase change material can be recycled. The aqueous phase change material can release moisture at high temperatures to take away a large amount of heat, thereby quickly reducing the temperature of the lamp surface and lowering the temperature of the lamp surface to the temperature required by the product; at the same time, the aqueous phase change material can absorb moisture in the air at low temperatures to achieve the effect of recycling the aqueous phase change material, and can also reduce the humidity near the display screen and reduce the failure rate of the lamp beads due to moisture.

[0037] The shell 11 may be made of metal or alloy, such as aluminum, aluminum alloy, magnesium alloy, etc., or may be made of plastic, such as polycarbonate, fiberglass, etc.

[0038] In one possible implementation, Figure 2 As shown, a first channel 13 is provided on the contact surface of the shell 11 for contacting the phase change layer 2 , and the liquid phase change medium in the cavity 12 enters the phase change layer 2 through the first channel 13 .

[0039] It is understandable that the shape of the housing 11 can be adapted to the shape of the display screen heating unit 100, and the housing 11 can be a polygon for easy splicing, such as a triangle, a square, etc. The housing 11 can be a plate-shaped body with at least a part of the interior being hollow, and the hollow part is the cavity.

[0040] like Figure 1 As shown, the first surface of the shell 11 is used to contact the heating unit 100, and the second surface of the shell 11 is used to contact the phase change layer. The first channel 13 is opened on the second surface of the shell 11, and the liquid phase change medium in the cavity 12 enters the phase change layer 2 through the first channel 13.

[0041] In one possible implementation, Figure 1-Figure 3 As shown, the cavity 12 includes at least two flow channels, at least two flow channels are connected, the number of groups of first channels 13 corresponds to the flow channels, and each group of first channels 13 is arranged along the extension direction of the corresponding flow channel, and each group of first channels 13 is connected to the corresponding flow channel.

[0042] It can be understood that the cavity 12 is a hollow part in the shell 11, and the cavity 12 is formed by connecting multiple flow channels, that is, the liquid phase change medium is filled in the flow channel, and the extension direction and width of the flow channel can be set as needed. Among them, the flow channel can be perpendicular to the thickness direction of the shell 11, and the first channel 13 can be set along the thickness direction of the shell 11.

[0043] like Figure 3 As shown, multiple flow channels can be interconnected through the bottom so that the liquid levels in the multiple flow channels can be maintained at the same horizontal plane, avoiding a situation where the liquid level in a certain flow channel is too different from the liquid level in other flow channels, thereby ensuring the efficiency of the multiple flow channels in transporting liquid phase change fluid to the phase change layer. The sizes of the multiple flow channels can be consistent, and the spacing between the multiple flow channels can be the same, ensuring uniform heat dissipation efficiency, reducing the temperature difference of the entire display screen, maintaining a relatively uniform temperature of the large screen, and improving the display quality and color stability of the display screen.

[0044] In one embodiment, a breathable net is provided on the first channel 13 , and the first channel 13 is located in the edge projection area of ​​the breathable net to form a stop for the phase change layer 2 in the direction of movement of the phase change layer 2 toward the cavity 12 .

[0045] It is understandable that a gas-permeable net is provided at the first channel 13, and the liquid phase change medium can pass through the gas-permeable net into the phase change layer 2, while the phase change layer 2 cannot pass through the gas-permeable net into the cavity 12. When the phase change layer 2 is in contact with the housing 11 by potting, the gas-permeable net can isolate the phase change layer 2 from the cavity 12.

[0046] The breathable net is a dustproof breathable net and covers the first channels 13 . The breathable net can be laid on each first channel 13 individually, laid on multiple first channels 13 as a whole, or multiple breathable nets can be spliced ​​and laid on all first channels 13 .

[0047] In one possible implementation, Figure 2 As shown, a fluid infusion port 14 is provided on the shell 11 , and the fluid infusion port 14 is communicated with the cavity 12 .

[0048] It can be understood that the liquid phase change medium is injected into the cavity 12 through the liquid inlet 14. Figure 3 As shown, when the shell 11 is placed vertically, the liquid replenishing port 14 can be set at the upper part of the shell 11 to prevent the liquid level of the liquid phase change medium in the shell 11 from exceeding the liquid replenishing port 14 and overflowing from the liquid replenishing port 14.

[0049] In one possible implementation, Figure 5 As shown, the display screen heat dissipation device also includes a liquid replenishing device, which includes a liquid storage container, an infusion tube 3, a liquid pump and a liquid injection head 32. The liquid storage container is connected to the liquid injection head 32 through the infusion tube 31. The liquid injection head 32 is used to connect to the liquid replenishing port 14 and transport the liquid phase change working medium in the liquid storage container to the cavity 12 through the liquid replenishing port 14.

[0050] It can be understood that by setting up a replenishing device to replenish the liquid phase change working fluid of the heat dissipation component 1, the infusion container is connected to one end of the infusion tube 31, the other end of the infusion tube 31 is connected to the injection head 32, and the injection head 32 is aligned with the replenishing port 14 of the heat dissipation component 1.

[0051] It is understandable that a plurality of injection heads 32 and infusion tubes 31 may be provided, corresponding to each heat dissipation component 1. It is also possible to provide one or a group of injection heads 32 and infusion tubes 31, and to provide an auxiliary displacement device, so as to drive the injection head 32 to move to the corresponding infusion port 14. The auxiliary displacement device is used to drive the injection head 31 to move to the infusion port 14 to be infused, and to connect the injection head 31 to the infusion port 14. The injection head 31 may be a needle-like structure, which is convenient for insertion into the infusion port 14. The auxiliary displacement device may include components such as guide rails, drive devices, and transmission devices, so as to drive the injection head 31 to move to the corresponding infusion port 14 position and connect.

[0052] It is understandable that the phase change layer 2 itself is flexible. When the injection head 32 is pulled out from the liquid filling port 14, the phase change layer 2 can automatically block the liquid filling port 14; a check valve can also be set at the liquid filling port 14 to prevent the liquid phase change medium from overflowing.

[0053] In one possible implementation, Figure 3 and Figure 4 As shown, the display screen heat dissipation device also includes a liquid level detection device, which is arranged in the cavity 12 and is used to detect the liquid level of the liquid phase change medium in the cavity 12. The liquid level detection device is connected to the liquid replenishing device.

[0054] It is understandable that if Figure 3 As shown, a liquid level detection device is provided to detect the liquid level in the cavity 12. The liquid level detection device includes at least two liquid level detection probes 41, which are respectively provided at the lower and higher positions of the cavity 12, serving as the minimum liquid level and the maximum liquid level for the normal operation of the liquid phase change medium in the cavity 12. Too much or too little liquid in the cavity 12 will affect the normal operation of the heat dissipation component 1.

[0055] The remaining amount of liquid phase change medium in each heat dissipation component 1 is detected by the liquid level detection device, and the replenishing device drives the injection head 31 to move to the corresponding replenishing port 14 to be replenished and connects according to the detection data, and the liquid phase change medium in the liquid storage container is transported to the corresponding cavity 12 by starting the liquid pump to achieve the replenishment effect, so as to replenish the liquid phase change material for the phase change layer 2 when the display screen works for a long time.

[0056] In specific implementation, the liquid replenishing device starts after receiving the water shortage signal provided by the liquid level detection device, and according to the coordinates provided by the control module, the liquid injection head 32 is inserted into the corresponding position of the liquid replenishing port 14 to replenish the liquid phase change working medium in the cavity 12. When the liquid level detection probe 41 near the liquid replenishing port 14 provides a liquid replenishing full signal, the liquid replenishing device stops replenishing, and is pulled out from the liquid replenishing port 14 of the housing 11 and returns to the initial position.

[0057] The number of the liquid level detection probes 41 may be one, two, three or any other integer greater than three.

[0058] It is understandable that if Figure 4 As shown, multiple liquid level detection probes 41 are located in different horizontal and vertical planes. The liquid level detection probes 41 can be set along the diagonal direction of the cavity 12, so that when the heat dissipation component 1 is placed upright, flat or tilted, the liquid level in the cavity 12 can be clearly monitored to achieve the effect of timely liquid replenishment.

[0059] If the display screen does not need to work for a long time, it can be in direct contact with the phase change layer 2, and the water-based phase change material can be recycled by releasing water at high temperature and absorbing water at low temperature.

[0060] In one possible implementation manner, the phase change layer 2 is in contact with the shell 11; and / or, the display screen heat dissipation device also includes a shell, the phase change layer 2 is located inside the shell, a second channel corresponding to the first channel 13 is opened on the shell, and the phase change layer 2 is connected to the cavity 12 through the first channel 13 and the second channel.

[0061] It is understandable that the liquid phase change material may be in contact with the housing 11 by potting, or the liquid phase change material may be made into a sheet and then attached to the housing 11 .

[0062] In one possible implementation, the heating unit 100 is a panel module and / or a power supply, and the connection method between the heating unit 100 and the heat dissipation component 1 is at least one of magnetic attraction, bolts, snaps, and bonding.

[0063] A second aspect of the present invention provides a display device, comprising any one of the above display screen heat dissipation devices.

[0064] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0066] In view of the above detailed description, these and other changes can be made to these embodiments, and this written description includes the best mode embodiments to disclose the utility model. The scope of the patent obtained by the utility model is defined by the claims, and the claims are not limited by the content of the present disclosure. The protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the scope disclosed by the utility model, according to the technical solution and its concept of the utility model, makes equivalent replacement or change, which is within the protection scope of the utility model.

Claims

1. A display screen heat dissipation device, characterized in that: The display screen heat dissipation device comprises: A heat dissipation component, the heat dissipation component is used to contact the heating unit of the display screen, the heat dissipation component includes a shell, a cavity is opened in the shell, and the cavity is used to accommodate a liquid phase change medium; A phase change layer, the phase change layer is in contact with the heat dissipation component, and the phase change layer is connected to the cavity so that the liquid phase change medium enters the phase change layer; When the temperature of the liquid phase-change medium in the phase-change layer is higher than a preset temperature, the liquid phase-change medium is converted from a liquid state to a gas state; The cavity includes at least two flow channels, and the flow channels are perpendicular to the thickness direction of the shell. At least two of the flow channels are connected through the bottom so that the liquid levels in the multiple flow channels are maintained at the same horizontal plane.

2. The display screen heat dissipation device according to claim 1, characterized in that: A first channel is provided on a contact surface of the shell for contacting the phase change layer, and the liquid phase change medium in the cavity enters the phase change layer through the first channel.

3. The display screen heat dissipation device according to claim 2, characterized in that: The number of groups of the first channels corresponds to the flow channels, and each group of the first channels is arranged along an extending direction of the corresponding flow channel.

4. The display screen heat dissipation device according to claim 2, characterized in that: A breathable net is provided on the first channel. The first channel is located in the edge projection area of ​​the breathable net and is used to form a stop for the phase change layer in the moving direction of the phase change layer toward the cavity.

5. The display screen heat dissipation device according to claim 1, characterized in that: The shell is provided with a fluid infusion port, and the fluid infusion port is communicated with the cavity.

6. The display screen heat dissipation device according to claim 5, characterized in that: The display screen heat dissipation device also includes a liquid replenishing device, which includes a liquid storage container, an infusion tube, a liquid pump and a liquid injection head. The liquid storage container is connected to the liquid injection head through the infusion tube. The liquid injection head is used to connect to the liquid replenishing port and transport the liquid phase change working medium in the liquid storage container to the cavity through the liquid replenishing port.

7. The display screen heat dissipation device according to claim 6, characterized in that: The display screen heat dissipation device further comprises a liquid level detection device, which is disposed in the cavity and is used to detect the liquid level of the liquid phase change medium in the cavity. The liquid level detection device is connected to the liquid replenishing device.

8. The display screen heat dissipation device according to claim 2, characterized in that: The phase change layer is in contact with the shell; and / or, The display screen heat dissipation device also includes a shell, the phase change layer is located in the shell, a second channel corresponding to the first channel is opened on the shell, and the phase change layer is connected to the cavity through the first channel and the second channel.

9. The display screen heat dissipation device according to claim 1, characterized in that: The heating unit is a panel module and / or a power supply, and the connection method between the heating unit and the heat dissipation component is at least one of magnetic attraction, bolts, snaps, and bonding.

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

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