CN201571152U - Radiating structure of liquid crystal display television - Google Patents

Abstract

The utility model is applied to the field of LCD TVs (liquid crystal display televisions), and provides a radiating structure for an LCD TV (liquid crystal display television). The radiating structure comprises a radiator, a circuit board, and a power component fixedly mounted on the circuit board, and further comprises at least one heat tube, wherein the heat tube comprises an evaporation end and a condensation end; the evaporation end is fixedly connected with the power component; the condensation end is fixedly connected with the radiator; two ends of the heat tube are closed; a closed cavity is formed inside the heat tube and filled with liquid; a plurality of capillary tubes capable of enabling the liquid to flow to the evaporation end from the condensation end are fixedly arranged on the side wall of the closed cavity; and the closed cavity adopts a vacuum cavity. The radiating structure for the LCD TV provided by the utility model has the advantages of good radiating effect and high radiating reliability, and can enable components inside the LCD TV to keep reliable operating temperature, thereby facilitating the prolonging of the service life.

Description

Heat dissipation structure of a liquid crystal television

technical field

The utility model belongs to the field of televisions, in particular to a heat dissipation structure of a liquid crystal television.

Background technique

At present, most of the heat dissipation methods adopted by the power components of LCD TVs are to use copper or aluminum radiators close to the power components, and use heat conduction to transfer heat from the power components to the radiators. The radiators use radiation and natural The convection cooling method reduces the temperature. This traditional heat dissipation method has limitations and can only be placed close to the power components. Heat is easy to accumulate at the power components, and the contact area between the power components and the radiator has a great influence on thermal resistance. , the heat dissipation effect is not good, the reliability of heat dissipation is low, and the radiator is large in size and heavy in weight, which is not conducive to reducing the thickness of the LCD TV.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art above, and provide a heat dissipation structure of a liquid crystal television, which has good heat dissipation effect and high heat dissipation reliability, and can keep the components inside the liquid crystal television at a reliable working temperature, thereby benefiting Extend the working life of LCD TV.

The utility model is achieved in this way, a heat dissipation structure of a liquid crystal television, including a radiator, a circuit board and a power element fixedly installed on the circuit board, and at least one heat pipe, the heat pipe includes an evaporation end and a condensation end, the evaporating end is fixedly connected to the power element, and the condensing end is fixedly connected to the radiator.

Specifically, both ends of the heat pipe are closed and a closed cavity is formed inside, and liquid is disposed in the closed cavity.

Further, a plurality of capillary tubes are fixed on the side wall of the closed cavity to allow the liquid to flow from the condensation end to the evaporation end.

Specifically, the closed cavity is a vacuum cavity.

Further, the heat sink is composed of several heat sinks stacked at intervals, and the heat sinks are provided with through holes for the condensation ends of the heat pipes to pass through.

Specifically, the heat sink is fixedly arranged at the ventilation window of the liquid crystal television casing.

The utility model provides a heat dissipation structure of a liquid crystal television, which has good heat dissipation effect and high heat dissipation reliability, and can keep the components inside the liquid crystal television at a suitable working temperature, thereby improving the working reliability of the liquid crystal television and prolonging the life of the liquid crystal television. The working life of the TV.

Description of drawings

FIG. 1 is a schematic diagram of a heat dissipation structure of a liquid crystal television provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, the heat dissipation structure of a kind of liquid crystal TV provided by the embodiment of the utility model comprises radiator 1, circuit board 2 and the power element 3 that is fixedly installed on described circuit board 2, also comprises at least one heat pipe 4. The heat pipe 4 includes an evaporating end 41 and a condensing end 42 , the evaporating end 41 is fixedly connected to the power element 3 , and the condensing end 42 is fixedly connected to the radiator 1 . Through such a design, the heat generated by the power element 3 can be transferred to the evaporation end 41 in time, and the heat in the condensation end 42 can be transferred to the radiator 1 in time for heat dissipation.

Specifically, both ends of the heat pipe 4 are closed and a closed cavity is formed inside, and liquid is disposed in the closed cavity. A plurality of capillary tubes are fixed on the side wall of the closed cavity to allow the liquid to flow from the condensing end 42 to the evaporating end 41 . When the heat generated by the power element 3 is conducted to the evaporating end 41 fixedly connected to the power element 3, the liquid in the evaporating end 41 absorbs heat, and the temperature rises at the same time, so that the power element 3 is cooled. After the liquid in the evaporating end 41 is heated to the boiling point by the heat generated by the power element 3 when it is in operation, the liquid in the evaporating end 41 evaporates to form steam, and the steam flows to the condensing end 42 and flows to the condensing end with a relatively low temperature. 42 releases heat while condensing into a liquid. The condensing end 42 conducts the heat released by the steam to the radiator 1 fixedly connected with the condensing end 42 to dissipate heat. The liquid formed by the condensation of the vapor at the condensing end 42 flows back to the evaporating end 41 under gravity or capillary force. Through the heat absorption and evaporation of the liquid in the evaporation end 41 of the heat pipe 4, and the heat release and condensation cycle in the condensation end 42, the heat generated by the power element 3 can be continuously conducted to the radiator 1 through the heat pipe 4 Among them, the radiator 1 transmits heat to the environment through radiation and natural convection cooling, so that the power element 3 maintains a reliable working temperature, which is beneficial to improving the reliability of the LCD TV and prolonging the life of the LCD TV.

More specifically, the closed cavity is a vacuum cavity, which is beneficial to reduce the boiling point of the liquid in the heat pipe 4 and make the boiling point of the liquid close to the ambient temperature, thereby facilitating the work of the liquid in the heat pipe 4 in the power absorbing element 3 After the heat generated during the operation, the temperature rises to the boiling point as soon as possible and forms steam. The steam flows to the condensing end 42 to release heat and condenses into a liquid, so that the heat generated by the power element 3 can be conducted to the radiator 1 through the heat pipe 4 as soon as possible. Heat accumulation at the power element 3 is avoided.

Furthermore, the heat sink 1 is composed of several heat sinks 11 stacked at intervals, so as to increase the heat dissipation area of the heat sink 1 and improve the heat dissipation performance of the heat sink 1, so that the heat can be evenly conducted to each heat sink 11, Therefore, the heat in the radiator 1 can be transferred to the environment through the cooling fins 11 as soon as possible, and at the same time, the temperature of the condensing end 42 is lowered, thereby facilitating the condensation of the steam in the condensing end 42 . The heat sink 11 is provided with a through hole for the condensing end 42 to pass through, so as to facilitate the reliable fixed connection of the condensing end 42 with the radiator 1, so that the heat released by the steam in the condensing end 42 can be reliably transmitted to the radiator 1 in each heat sink 11.

Specifically, the heat sink 1 is fixedly arranged at the ventilation window of the liquid crystal television casing. Specifically, the heat pipe 4 can be bent, so that the heat generated by the power element 3 can be flexibly led to a suitable position for heat dissipation, so that the layout of the radiator 1 is flexible. The LCD TV provided by the utility model The heat dissipation structure fixes the radiator 1 at the ventilation window of the LCD TV casing, so as to facilitate the heat in the radiator 1 to be transferred to the environment faster, so that the components inside the LCD TV can maintain a reliable working temperature , thus helping to prolong the working life of the LCD TV.

At present, the thermal resistance of traditional all-copper or all-aluminum radiators can only reach 0.04°C/W under air-cooled conditions, while the thermal resistance of the heat pipe radiator adopted by the utility model can reach 0.01°C/W. Under the condition of convection cooling, the performance of the heat pipe radiator can be improved by more than ten times compared with the traditional all-aluminum or all-copper radiator. The heat pipe radiator adopted by the utility model has good heat dissipation effect and high heat dissipation reliability, so that the components inside the LCD TV can maintain a reliable working temperature, thereby improving the reliability of the LCD TV and prolonging the working of the LCD TV. At the same time, due to the good heat dissipation effect of the heat pipe, correspondingly, when the radiator 1 is small in size, it can also ensure that the components inside the LCD TV maintain a reliable working temperature, which can help reduce the volume of the radiator and reduce the weight of the LCD TV , so as to facilitate the ultra-thin design of the LCD TV.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (6)

1. the radiator structure of a liquid crystal TV set, comprise radiator, wiring board and be fixedly mounted on power component on the described wiring board, it is characterized in that: also comprise a minimum heat pipe, described heat pipe comprises evaporation ends and condensation end, described evaporation ends is fixedlyed connected with described power component, and described condensation end is fixedlyed connected with described radiator.

2. the radiator structure of a kind of liquid crystal TV set as claimed in claim 1 is characterized in that: described heat pipe closed at both ends also forms a closed cavity in inside, is provided with liquid in the described closed cavity.

3. the radiator structure of a kind of liquid crystal TV set as claimed in claim 2, it is characterized in that: described closed cavity sidewall is installed with some capillaries that make described liquid be flow to evaporation ends by described condensation end.

4. the radiator structure of a kind of liquid crystal TV set as claimed in claim 3, it is characterized in that: described closed cavity is a vacuum cavity.

5. the radiator structure of a kind of liquid crystal TV set as claimed in claim 1, it is characterized in that: the fin that described radiator is piled up by some intervals is formed, but described fin offers the through hole that the condensation end of heating tube wears.

6. as the radiator structure of each described a kind of liquid crystal TV set in the claim 1 to 5, it is characterized in that: described radiator is fixed at described liquid crystal TV set ventilation for enclosures window place.

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