WO2021117918A1

WO2021117918A1 - Device for cooling led by using heat pipe having condensate suction wick and rod-type condensate return wick

Info

Publication number: WO2021117918A1
Application number: PCT/KR2019/017313
Authority: WO
Inventors: 이기우; 김종선; 김상경
Original assignee: 주식회사 폴라앤코
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-17

Abstract

The present invention relates to a device for cooling an LED by using a heat pipe having a condensate suction wick and a rod-type condensate return wick and, more specifically, to a device for cooling an LED by using a heat pipe having a condensate suction wick and a rod-type condensate return wick, wherein a heat pipe is coupled to one surface of an LED which is driven to emit light regardless of the direction of LED light, and an evaporation wick containing an operation fluid is disposed inside the heat pipe. The liquid operation fluid in the evaporation wick is evaporated into gas by heat generated by the LED, the operation fluid having been gasified by the evaporation is cooled by a cooling fin attached to a condensation part, and the cooled operation fluid is then returned to the evaporation wick through a suction wick and a return wick. Accordingly, the present invention enables continuous and rapid cooling of an LED.

Description

LED cooling device using heat pipe with condensate suction wick and ROD type condensate return wick

The present invention provides a condensate suction wick that includes an evaporation wick, a suction wick, and a return wick inside a heat pipe to cool an LED that generates heat during operation by evaporation of a working fluid, and condenses the evaporated working fluid to be used for cooling. And it relates to an LED cooling device using a heat pipe having a rod-type condensate return wick.

LED (Light Emitting Diode, Light Emitting Diode) is a type of semiconductor and uses the phenomenon that electric energy is converted into light energy when a voltage is applied to emit light.

Lighting fixtures using such LEDs have advantages in that they can implement light of various colors as well as consume less power than incandescent lamps, etc., which are mainly used as current lighting fixtures, but also have a disadvantage in that heat generation is increased.

However, the large-capacity LED lighting equipment currently used has a problem in that it does not effectively cool the heat generated by the LED during operation when the light is directed upward.

Accordingly, the development of a device capable of solving these problems is on the rise.

[Prior art literature]

[Patent Literature]

(Patent Document 1) Republic of Korea Patent Publication No. 10-1035100 (Registered on May 9, 2011)

The present invention has been devised to solve the above problems, and an object of the present invention is to enable a large-capacity LED that generates heat during use to be operated regardless of the direction of light and to be efficiently cooled and used during operation, A heat pipe is installed at one end of the LED, and an evaporation wick, a suction wick, and a return wick are installed in the heat pipe. The condensate suction wick and the rod-type condensate return wick are designed to be cooled and returned to the evaporation wick by the capillary force of the return wick so that they can be used for cooling the LED even when directed upward, horizontally or downward, regardless of the direction of the LED light. To provide an LED cooling device using a heat pipe having

Other objects and advantages of the present invention will be set forth below and will be learned by way of example of the present invention. Further, the objects and advantages of the present invention may be realized by means and combinations indicated in the claims.

The present invention is a means for solving the above problems,

a heat pipe 10 composed of a hollow evaporator 20 and a condensing part 30 in the form of a tube communicating with the center of one surface of the evaporator 20 and extending in the longitudinal direction; LED (40) installed on the outer surface of the evaporation unit (20) to emit light; Formed on one side of the evaporator 20, the working fluid (W) is contained therein, the working fluid (W) is evaporated by heat when the LED 40 is driven, and the working fluid vapor (W1) Evaporation wick 50 is generated; Suction wick 60 formed at one end of the condensing unit 30 and condensed while the working fluid vapor (W1) is moved to the end in the longitudinal direction of the condensing unit 30 and absorbed as the working fluid condensate (W2). ); It is installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate (W2) in the suction wick 60 is sucked by capillary force to the evaporation wick 50. a return wick 70 for cooling the LED 40 with the working fluid condensate (W2); Including the large-capacity LED light source is characterized in that it enables cooling in any direction.

As described above, according to the present invention, the large-capacity LED light source being driven can be operated in any direction and can be easily and easily cooled, so that it can be used for a long time and can extend its lifespan.

In addition, the present invention cools the heat generated by the large-capacity LED light source within a short time by attaching a cooling fin to the surface of the condensing unit to cool the working fluid evaporated by the heat of the LED, thereby allowing the working fluid of the heat pipe to return to the evaporation wick, thereby cooling the LED. By allowing it to be used, there is an effect that the cooling efficiency is increased.

In addition, the present invention installs an evaporation wick, a suction wick, and a return wick in the heat pipe, so that the evaporation, movement, condensation, and return of the working fluid are made quickly, so that it operates regardless of the direction of the light source to enable efficient cooling. there is

1 is a view showing a first embodiment of an LED cooling device using a heat pipe having a condensate suction wick and a rod-type condensate return wick according to the present invention.

2 is a view showing second and third embodiments of an LED cooling device using a heat pipe having a condensate suction wick and a rod-type condensate return wick according to the present invention.

3 and 4 are views of an embodiment showing a cooling fin according to the present invention.

5 is a view of an embodiment showing a double tube type for a steam flow passage according to the present invention.

Figure 6 is a view of an embodiment showing the form of a double tube condensing unit according to the present invention.

10: heat pipe 20: evaporation unit

30: condensing unit 31: inner tube

32: external pipe 33: steam flow passage

40: LED 50: evaporation wick

60: suction wick 70: return wick

80: cooling fin 91: first guide groove

92: second guide home

W: Working fluid W1: Working fluid Steam

W2: Working fluid condensate

Before describing various embodiments of the present invention in detail, it is to be understood that the application is not limited to the details of the construction and arrangement of components described in the following detailed description or shown in the drawings. The invention is capable of being embodied and practiced in other embodiments and of being carried out in various ways. Also, device or element orientation (eg "front", "back", "up", "down", "top", "bottom") The expressions and predicates used herein with respect to terms such as ", "left", "right", "lateral", etc. are used merely to simplify the description of the invention, and the associated apparatus Or it will be appreciated that it does not simply indicate or imply that an element must have a particular orientation. Also, terms such as “first” and “second” are used in this application and the appended claims for descriptive purposes and are not intended to indicate or imply relative importance or spirit.

In order to achieve the above object, the present invention has the following features.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, the configuration shown in the embodiments and drawings described in the present specification is only the most preferred embodiment of the present invention and does not represent all of the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

Looking at an embodiment according to the present invention,

In the first embodiment, a heat pipe 10 composed of a hollow evaporator 20 and a tubular condensing part 30 that is in communication with the center of one surface of the evaporator 20 and extends in the longitudinal direction. ; LED (40) installed on the outer surface of the evaporation unit (20) to emit light; The evaporation wick 50 formed on one side of the evaporation unit 20, the evaporation wick contains a working fluid (W) inside, and the working fluid (W) is evaporated by heat when the LED 40 is driven (50); Suction wick 60 formed at one end of the condensing unit 30 and condensed while the working fluid vapor (W1) is moved to the end in the longitudinal direction of the condensing unit 30 and absorbed as the working fluid condensate (W2). ); It is installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate (W2) in the suction wick 60 is sucked by capillary force to the evaporation wick 50. a return wick 70 for cooling the LED 40 with the working fluid condensate (W2); It is characterized in that it comprises a.

In addition, in the second embodiment, a heat pipe consisting of a hollow evaporator 20 and a condensing part 30 in the form of a tube that is in communication with the center of the bottom surface of the evaporator 20 and extends in the longitudinal direction ( 10); an LED 40 installed on the outer upper surface of the evaporator 20 and emitting light upwards; an evaporation wick 50 formed on an upper surface of the evaporation unit 20; an evaporation wick (50) containing a working fluid (W) therein so that the working fluid (W) is evaporated by heat when the LED (40) is driven; Suction wick 60 formed at the lowermost end of the condensing unit 30 and condensed as the working fluid vapor (W1) moves downward along the longitudinal direction of the condensing unit 30 and absorbed into the working fluid condensate (W2). ); It is vertically installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate (W2) in the suction wick 60 is sucked by capillary force, and the evaporation wick ( 50) to return while moving upward, and a return wick 70 for cooling the LED 40 with the working fluid condensate (W2); characterized in that it includes a.

In addition, in the third embodiment, a heat pipe consisting of a hollow evaporator 20 and a condensing part 30 in the form of a tube that is in communication with the center of the upper surface of the evaporator 20 and extends in the longitudinal direction ( 10); LED (40) installed on the outer bottom surface of the evaporator (20) to emit light downward; It is formed on the bottom of the evaporator 20, and the working fluid (W) is contained therein, and the working fluid (W) is evaporated by heat when the LED (40) is driven, so that the working fluid vapor (W1) is an evaporation wick 50 for allowing the vaporizing unit 20 to move upward in the longitudinal direction of the condensing unit 30, and for allowing the working fluid vapor (W1) to be condensed and to fall and be reabsorbed; A suction wick formed at the uppermost end of the condensing unit 30 and condensed as the working fluid vapor (W1) moves upward along the longitudinal direction of the condensing unit 30 and is partially absorbed as the working fluid condensate (W2) ( 60); It is vertically installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate (W2) sucked into the suction wick 60 is sucked by capillary force, and the evaporation a return wick 70 for cooling the LED 40 with the working fluid condensate (W2) by returning it while moving downward to the wick 50; It is characterized in that it comprises a.

In addition, the heat pipe 10 is formed to protrude a plurality of spaced apart in the longitudinal direction, cooling fins 80 for increasing the condensation efficiency of the working fluid vapor (W1); is provided, and the cooling fins 80 can be changed in shape and number according to a preset operating temperature range of the working fluid W in the heat pipe 10 .

In addition, the cooling fin 80 has a central hole for fastening to the outer periphery of the heat pipe 10 is perforated, and a plurality of circular plate-shaped cooling fins 80 having the same diameter are formed in the heat pipe 10 . In the first form (A) installed spaced apart in the longitudinal direction of the heat pipe 10, a central hole for fastening to the outer periphery of the heat pipe 10 is perforated, and a plurality of circular plate shapes are formed in the longitudinal direction of the heat pipe 10 of the cooling fins 80 are installed spaced apart, the plurality of cooling fins 80 toward the moving direction of the working fluid vapor W1, the cooling fins 80 having a gradually smaller diameter are used ( B), characterized in that it is one of.

In addition, the cooling fins 80 are formed to protrude from the outer periphery of the heat pipe 10 in the longitudinal direction, and a plurality of the cooling fins 80 are installed on the outer periphery of the heat pipe 10 while being spaced apart from each other. ) or is formed to protrude in the longitudinal direction on the outer periphery of the heat pipe 10, and a plurality of them are installed to be spaced apart from each other around the outer periphery of the heat pipe 10, and each cooling fin 80 is a working fluid vapor It is characterized in that it is one of the fourth form (D), which has a form in which the width is gradually reduced toward the moving direction of (W1).

In addition, the condensing unit 30 has a plurality of ring-shaped first guide grooves 91 on the inner periphery formed to be spaced apart in the longitudinal direction, so that the working fluid condensate condensed along the first guide groove 91 ( W2) is easily guided and moved toward the evaporation wick 50, and each second guide groove 92 of a straight line is formed on the inner periphery of the condensing unit 30 in the longitudinal direction, the second The guide groove 92 has a shape that intersects the plurality of first guide grooves 91 so that the working fluid condensate W2 condensed along the first guide groove 91 is in the second guide groove 92 . It is characterized in that it is gathered and moved to the evaporation wick 50 side easily.

In addition, the condensing unit 30 has a double-tube structure consisting of an inner tube 31 in which the return wick 70 is installed and an outer tube 32 installed outside the inner tube 31, Between the inner tube 31 and the outer tube 32, the working fluid vapor (W1) and the working fluid condensate (W2) is characterized in that the vapor flow passage 33 is formed is formed.

Hereinafter, an LED cooling device using a heat pipe having a condensate suction wick and a rod-type condensate return wick according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6 .

The LED cooling device using a heat pipe having a condensate suction wick and a rod-type condensate return wick of the present invention includes a heat pipe 10, an LED 40 (Light-Emitting Diode), an evaporation wick 50, a suction wick 60, It includes a return wick 70 and a cooling fin 80 .

First, in the LED cooling device using a heat pipe having a condensate suction wick and a rod-type condensate return wick according to the present invention, the heat pipe 10 is installed on one surface of the LED 40, but the light of the LED 40 is horizontal. In the first case of installing the device horizontally to face, the light of the LED 40 is directed upward, and the LED 40 is vertically installed so that it is positioned at the top of the device, in the second case, the light of the LED 40 In the third case, in which the LED 40 is vertically installed so that it is positioned at the bottom of the device (to be opposite to the second case, up and down) so as to face this lower side, a total of three embodiments are presented.

Of course, the following components installed inside are all the same, and the installation form is different depending on where the light of the LED 40 is directed, but in the present invention, an evaporation wick 50, a suction wick ( 60), by configuring the feedback wick 70, the LED 40 emits light in any direction (horizontal, upper, lower), regardless of the installation form (horizontal, vertical), inside the evaporation wick 50 After the working fluid (W) of the LED 40 is evaporated by heat generation, it is cooled and moved to the original evaporation wick 50 so that it can be used for cooling. Accordingly, the continuous operation of the LED 40 is possible.

First, for convenience of description, the configuration of the device will be described in the first case, that is, the case where the entire device is installed horizontally with the ground so that the LED 40 light is oriented horizontally.

The heat pipe 10 is composed of a hollow evaporator 20 and a condensing part 30 in the form of a tube that communicates with the center of one surface of the evaporator 20 and extends in the longitudinal direction, and is horizontal with the ground. will be installed as

At this time, the diameter of the evaporator 20 is such that the condensing unit 30 has a larger circular cross-section than the diameter, and the length of the condensing unit 30 is relatively longer than that of the evaporator 20, so that the evaporation The part 20 is a disk, and the condensing part 30 is made to form a rod shape of a circular cross section, so that it becomes a 'T' shape.

In addition, an LED 40 for emitting or emitting light (light) is connected to a separate power supply and fixedly installed on the outer surface of the evaporator 20 .

Of course, the diameter of the evaporator 20 will be the same as the diameter of the LED 40, and the cross-sectional shape of the heat pipe 10 is a shape corresponding to the shape of the LED 40, depending on the embodiment of the user, circular, Of course, it is possible to change it in various ways, such as a square, a polygon, etc.

In addition, the condensing unit 30 has a plurality of ring-shaped first guide grooves 91 on the inner periphery formed to be spaced apart in the longitudinal direction, so that the working fluid condensate condensed along the first guide groove 91 ( W2) may be easily guided and moved to the evaporation wick 50 side.

In addition, in addition to the first guide groove 91, each of the second guide grooves 92 of a straight line in the longitudinal direction are formed on the inner periphery of the condensing unit 30, and the second guide grooves 92 are In such a manner that the plurality of first guide grooves 91 intersect, the working fluid condensate (W2) condensed along the first guide grooves 91 is collected in the second guide grooves 92 and the suction wick (60) This is because it can be easily moved to the side.

In addition, in another embodiment for the movement of the working fluid vapor (W1) and the working fluid condensate (W2), the condensing unit 30 includes an inner tube 31 in which a return wick 70 is installed, and the inner By having a double pipe structure consisting of an outer tube 32 installed on the outside of the tube 31, between the inner tube 31 and the outer tube 32, the working fluid vapor (W1) and the working fluid condensate ( It is also possible to form the vapor flow passage 33 through which W2) is moved.

The evaporation wick 50 is formed on one side of the evaporation unit 20, has a shape corresponding to one surface of the evaporation unit 20, and contains a working fluid (W) therein, the LED (40) When driving to generate light, the working fluid (W) is evaporated by the driving heat of the LED (40), and the evaporated working fluid vapor (W1) is in the longitudinal direction of the condensing unit (30) in the evaporating unit (20). to move horizontally toward

That is, the evaporation wick 50 is located in the evaporation unit 20 , and is installed on a surface corresponding to the LED 40 in the evaporation unit 20 .

The suction wick 60 is formed at one end of the condensing unit 30 and has a shape corresponding to one surface of the condensing unit 30, and the working fluid vapor W1 evaporated in the evaporation wick 50 described above. When the condensing unit is gradually condensed while horizontally moving toward the end along the longitudinal direction of the condensing unit 30, this working fluid condensate (W2) is absorbed.

The return wick 70 has a rod shape, is horizontally installed in the center of the heat pipe 10 in the heat pipe 10, one end is connected to the evaporation wick 50, and the suction wick 60 is the other end. It is installed horizontally to connect with the evaporator wick 50, the return wick 70, and the suction wick 60 to have an 'I'-shaped structure in which the suction wick 60 is laid on each other.

The return wick 70 moves into the suction wick 60 so that the absorbed working fluid condensate W2 is sucked by the capillary force of the return wick 70 and returned to the evaporation wick 50 side, so that the evaporation wick ( 50) to the working fluid condensate (W2) to cool the LED (40).

The cooling fins 80 are formed protrudingly spaced apart from each other in the longitudinal direction on the outer periphery of the heat pipe 10 to increase the condensation efficiency of the working fluid vapor W1, and the heat pipe 10 The shape and number can be changed according to the preset operating temperature range of the working fluid (W).

A total of four types of these cooling fins 80 are presented in the present invention.

1. First form (A): The heat pipe 10 has a circular plate shape in which a central hole for fastening to the outer periphery is perforated, and a plurality of cooling fins 80 of this circular plate have the same diameter as the heat pipe. (10) A form that is installed spaced apart in the longitudinal direction.

2. Second form (B): has a circular plate shape in which a central hole for fastening to the outer periphery of the heat pipe 10 is perforated, and a plurality of circular plate cooling fins in the longitudinal direction of the heat pipe 10 (80) is installed spaced apart, the plurality of cooling fins 80 toward the moving direction of the working fluid vapor (W1), the cooling fins 80 are used, the diameter of which gradually decreases.

That is, the cooling fins 80 in the second form (B) all have different diameters, and these are gradually smaller toward the longitudinal direction of the heat pipe 10 (movement direction of the working fluid vapor W1). The cooling fins 80 are fastened.

3. Third form (C): A form in which a plurality of pieces are installed to protrude from the outer periphery of the heat pipe 10 in the longitudinal direction, and to be spaced apart from each other around the outer periphery of the heat pipe 10 .

4. Fourth form (D): protruding in the longitudinal direction on the outer periphery of the heat pipe 10, and a plurality of them are installed spaced apart from each other around the outer periphery of the heat pipe 10, each cooling fin ( 80) is a form in which the width is gradually reduced in the direction of movement of the working fluid vapor (W1).

The cooling fins 80 in the present invention are formed in one of the first, second, third, and fourth forms (A, B, C, D) described above.

In addition, as described above, in the present invention, although the case with the return wing 70 has been described, when the LED light is directed to the bottom, the return wing 70 may be implemented in an unused form.

That is, even if the return blade 70 is installed as described in the present invention, the working fluid condensate (W2) is automatically evaporated and moved automatically, so as follows, it can be configured in a form without the return blade 70 have.

That is, the hollow evaporator 20 and the heat pipe 10 composed of a condensing part 30 in the form of a tube communicating with the center of one surface of the evaporator 20 and extending in the longitudinal direction, the evaporator (20) is installed on the outer surface of the LED 40 that emits light, is formed on one side of the evaporator 20, the working fluid (W) is contained therein, the driving of the LED (40) Between the evaporating wick 50 in which the working fluid (W) is evaporated by heat generation and the double pipe-shaped inner tube 31 and the outer tube 32 constituting the condensing unit 30, the working fluid vapor W1 ) and the working fluid condensate (W2) is to be in a form in which the vapor flow passage 33 is moved.

As a result, the return of the working fluid condensate (W2) is automatically moved to the evaporation wick (50) by gravity, so it is possible to implement a configuration in which the return of the working fluid condensate (W2) can be omitted.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those of ordinary skill in the art to which the present invention pertains. Of course, various modifications and changes are possible within the scope of equivalents of the claims to be described.

Claims

a heat pipe 10 composed of a hollow evaporator 20 and a condensing part 30 in the form of a tube communicating with the center of one surface of the evaporator 20 and extending in the longitudinal direction;

LED (40) installed on the outer surface of the evaporation unit (20) to emit light;

an evaporation wick 50 which is formed on one side of the evaporation unit 20 and contains a working fluid (W) therein so that the working fluid (W) is evaporated by heat when the LED 40 is driven;

Suction wick 60 formed at one end of the condensing unit 30 and condensed while the working fluid vapor (W1) is moved to the end in the longitudinal direction of the condensing unit 30 and absorbed as the working fluid condensate (W2). );

It is installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate (W2) in the suction wick 60 is sucked by capillary force to the evaporation wick 50. a return wick 70 for cooling the LED 40 with the working fluid condensate (W2);

LED cooling device using a heat pipe having a condensate suction wick and an ROD-type condensate return wick, characterized in that it comprises a.
a heat pipe 10 composed of a hollow evaporator 20 and a condensing part 30 in the form of a tube communicating with the center of the bottom surface of the evaporator 20 and extending in the longitudinal direction;

an LED 40 installed on the outer upper surface of the evaporator 20 and emitting light upwards;

an evaporation wick 50 formed on the upper surface of the evaporation unit 20, the working fluid W is contained therein, and the working fluid W is evaporated by heat when the LED 40 is driven;

Suction wick 60 formed at the lowermost end of the condensing unit 30 and condensed as the working fluid vapor (W1) moves downward along the longitudinal direction of the condensing unit 30 and absorbed into the working fluid condensate (W2). );

It is vertically installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate (W2) in the suction wick 60 is sucked by capillary force, and the evaporation wick ( a return wick 70 for cooling the LED 40 with the working fluid condensate (W2) by returning it while moving upwardly to 50);

LED cooling device using a heat pipe having a condensate suction wick and an ROD-type condensate return wick, characterized in that it comprises a.
a heat pipe 10 composed of a hollow evaporator 20 and a condensing part 30 in the form of a tube communicating with the center of the upper surface of the evaporator 20 and extending in the longitudinal direction;

LED (40) installed on the outer bottom surface of the evaporator (20) to emit light downward;

It is formed on the bottom of the evaporator 20, and the working fluid (W) is contained therein, and the working fluid (W) is evaporated by heat when the LED (40) is driven, so that the working fluid vapor (W1) is an evaporation wick 50 for allowing the vaporizing unit 20 to move upward in the longitudinal direction of the condensing unit 30, and for allowing the working fluid vapor (W1) to be condensed and to fall and be reabsorbed;

A suction wick formed at the uppermost end of the condensing unit 30 and condensed as the working fluid vapor (W1) moves upward along the longitudinal direction of the condensing unit 30 and is partially absorbed as the working fluid condensate (W2) ( 60);

It is vertically installed to connect the evaporation wick 50 and the suction wick 60 in the heat pipe 10, and the working fluid condensate W2 sucked into the suction wick 60 is sucked by capillary force, and the evaporation a return wick 70 for cooling the LED 40 with the working fluid condensate (W2) by returning it while moving downward to the wick 50;

LED cooling device using a heat pipe having a condensate suction wick and an ROD-type condensate return wick, characterized in that it comprises a.
4. The method according to any one of claims 1 to 3,

The heat pipe 10 is

A plurality of spaced apart and protruding in the longitudinal direction, cooling fins (80) for increasing the condensation efficiency of the working fluid vapor (W1);

is provided, and the cooling fin 80 includes a condensate suction wick and an ROD-type condensate return wick, characterized in that the shape and number can be changed according to the preset operating temperature range of the working fluid W in the heat pipe 10 . LED cooling device using a heat pipe.
5. The method of claim 4,

The cooling fan 80 is

A central hole for fastening to the outer periphery of the heat pipe 10 is perforated, and a plurality of circular plate-shaped cooling fins 80 having the same diameter are installed spaced apart from each other in the longitudinal direction of the heat pipe 10 . 1 form (A), or

A central hole for fastening to the outer periphery of the heat pipe 10 is perforated, and a plurality of circular plate-shaped cooling fins 80 are spaced apart in the longitudinal direction of the heat pipe 10, and the plurality of cooling fins (80) toward the moving direction of the working fluid vapor (W1), a second form (B) in which a cooling fin 80 whose diameter is gradually smaller is used,

LED cooling device using a heat pipe having a condensate suction wick and an ROD-type condensate return wick, characterized in that it is one of the
5. The method of claim 4,

The cooling fan 80 is

or a third form (C) in which a plurality of protrusions are formed on the outer periphery of the heat pipe 10 in the longitudinal direction, and a plurality of them are installed while being spaced apart from each other on the outer periphery of the heat pipe 10,

It is formed to protrude in the longitudinal direction on the outer periphery of the heat pipe 10, and a plurality of them are installed to be spaced apart from each other around the outer periphery of the heat pipe 10, and each cooling fin 80 is a working fluid vapor (W1) A fourth form (D) having a form in which the width is gradually reduced toward the moving direction of

LED cooling device using a heat pipe having a condensate suction wick and an ROD-type condensate return wick, characterized in that it is one of the
4. The method according to any one of claims 1 to 3,

The condensing unit 30 is

A plurality of ring-shaped first guide grooves 91 are formed to be spaced apart in the longitudinal direction on the inner periphery, so that the working fluid condensate W2 condensed along the first guide groove 91 is directed toward the evaporation wick 50. to be easily guided and moved,

Each of the second guide grooves 92 of a straight line are formed on the inner periphery of the condensing unit 30 in the longitudinal direction, and the second guide grooves 92 intersect the plurality of first guide grooves 91 . Condensate, characterized in that the working fluid condensate (W2) condensed along the first guide groove (91) gathers in the second guide groove (92) and can be easily moved to the evaporation wick (50) side. LED cooling device using heat pipe with suction wick and ROD-type condensate return wick.
4. The method according to any one of claims 1 to 3,

The condensing unit 30 is

By having a double pipe structure consisting of an inner tube 31 in which the return wick 70 is installed, and an outer tube 32 installed outside the inner tube 31,

A condensate suction wick and ROD, characterized in that between the inner tube 31 and the outer tube 32, a vapor flow passage 33 through which the working fluid vapor (W1) and the working fluid condensate (W2) are moved is formed. LED cooling system using heat pipe with type condensate return wick.