JPWO2008081848A1 - Cooling device, electronic heating element cooling external kit, and electronic heating element assembly with cooling device - Google Patents

Abstract

A cooling device with low manufacturing cost and high cooling efficiency is provided. SOLUTION: A cylindrical body 10, a heat radiating fin 2 that is formed integrally with a cylindrical surface 10a of the cylindrical body and protrudes outward from the cylindrical surface, a blower pipe 4 that is inserted through the cylindrical surface and allows ventilation from a fan 50, and a cylinder A top plate 12 that closes the upper end of the body, and a bottom plate 14 that closes the lower end of the cylinder and makes contact with the electronic heating element 30 to conduct heat, and the radiating fin has a hollow portion that communicates with the internal space of the cylinder. And the electronic heating element is cooled by the cooling liquid contained in the inner space of the cylindrical body and the hollow portion of the radiating fin. [Selection] Figure 1

Description

  The present invention relates to a cooling device for cooling an electronic heating element such as a CPU or an internal combustion engine such as an automobile engine mounted on a computer or the like, an external heating kit for cooling an electronic heating element, and an electronic heating element assembly with a cooling device.

2. Description of the Related Art As a CPU cooling device, there is known a CPU that cools air radiating fins attached to an upper surface of a CPU by blowing air from a fan. On the other hand, the amount of heat generation tends to increase with the improvement of CPU performance, and recently, a liquid cooling type CPU cooling device has begun to be used. However, the conventional liquid cooling type cooling device requires a cooling liquid tank, a radiator, and a pump for sending liquid between them, and there is a problem that the size and complexity of the device increases and the operating noise of the pump is large. It was. Thus, several liquid-cooled CPU cooling devices that do not use a liquid feed pump have been developed (see Patent Documents 1 and 2).
On the other hand, conventionally, as a water cooling device for cooling an internal combustion engine such as an automobile engine, it is known to use a water cooling jacket covering a head of the engine and a radiator.

JP 2005-228809 JP Utility Model Registration No. 3085383

However, in the case of the techniques described in Patent Documents 1 and 2, there is a problem in that the manufacturing cost increases because the container for storing the coolant and the heat radiation fin are separate. In addition, in these techniques, heat radiation from the coolant is performed only by the heat radiation fins, so that it cannot be said that the cooling efficiency is sufficient.
Further, the water cooling apparatus currently used for automobile engines and the like is an external radiator system, but the pipe flowing through the cooling liquid of the radiator is thin and easily clogged, and the manufacturing cost is high and it cannot be said that it is strong.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cooling device with low manufacturing cost and high cooling efficiency.

In order to achieve the above object, a cooling device of the present invention includes a cylindrical body, a radiating fin that is formed integrally with the cylindrical surface of the cylindrical body and protrudes outward from the cylindrical surface, and an upper end and a lower end of the cylindrical body. A top plate and a bottom plate, and a cylindrical pipe, or a blower pipe that is inserted between the top plate and the bottom plate and passes air from a fan or by natural wind, the cylindrical surface, the top plate, and the bottom plate A contact plane that is formed in any of the above and that conducts heat by contacting the object to be cooled, and the radiation fin has a hollow portion that communicates with the internal space of the cylindrical body, and the internal space of the cylindrical body and the The object to be cooled is cooled by a cooling liquid accommodated in a hollow portion of the radiating fin.
With such a configuration, the entire apparatus also serves as a coolant tank, so that the apparatus is compact and inexpensive. In addition, since the cooling liquid is accommodated in the hollow portion of the radiating fin, the heat of the cooling liquid in the cylinder is efficiently radiated from the radiating fin. Further, since the air from the fan or natural air can be passed through the blower pipe inserted through the cylinder surface, the heat of the coolant in the cylinder is more efficiently discharged. That is, the entire device is cooled from the outside by the hollow fins and is cooled from the inside of the device by the blower pipe.

The cooling device of the present invention includes a cylinder, a heat radiation fin that is formed integrally with the cylinder surface of the cylinder and protrudes outward from the cylinder surface, a top plate that closes the upper end and the lower end of the cylinder, and The bottom plate,
A blower pipe that is inserted between the cylindrical surface or the top plate and the bottom plate and allows ventilation from a fan or natural wind; and the heat dissipating fin has a hollow portion that communicates with the internal space of the cylindrical body. The cooling liquid that contacts the object to be cooled and conducts heat cools the object to be cooled by entering and exiting the internal space of the cylindrical body and the hollow portions of the radiation fins.

It is preferable that the cylindrical body and the radiating fin are obtained by molding a wall surface of a cylindrical material, or obtained by drawing or extrusion molding.
With such a configuration, manufacturing is simplified compared to the case where the fins are manufactured separately, and the protruding heat-radiating fins have a reinforcing effect as ribs, ensuring strength even when the thickness of the cylindrical body is reduced. In addition, the amount of material used can be reduced.

One of the cylindrical surface, the top plate, or the bottom plate through which the blower pipe is inserted retreats toward the object to be cooled, and is from a fan attached to the surface or natural wind. It is preferable that the air blow by is guided to the cooling object side.
With such a configuration, since the outside air blown from the fan or by natural wind directly hits the object to be cooled, it is possible to prevent condensation of the object to be cooled due to cooling.

A liquid-filled pipe is attached to the outer surface of any one of the cylindrical surface, the top plate, and the bottom plate, and is pivotally supported in the outer surface so that the tip of the liquid-filled pipe is removable. It is preferably occluded.
With such a configuration, it is possible to easily fill or replenish the coolant from the liquid-filled pipe by rotating the liquid-filled pipe so that the tip of the liquid-filled pipe faces upward regardless of the orientation of the apparatus. Preferably, when the liquid-filled pipe is formed from a transparent material, the amount of the cooling liquid can be confirmed.

It is preferable that the top plate or the bottom plate and the cylindrical surface are connected by a cylindrical body portion.
With such a configuration, the top plate or the bottom plate can be attached in a direction deviated from the axial direction of the cylindrical surface by curving the body portion, and the cooling object to be brought into contact with the top plate or the bottom plate and the present invention. Easy handling with the device. Further, when the object to be cooled is a CPU or the like disposed in the back of a computer or an engine located in the back of the automobile, the body of the present invention can be disposed outside by extending the body. .

  The cooling object may be an electronic heating element, a battery cell, an electric motor, or an internal combustion engine.

The electronic heating element cooling external kit of the present invention is used in the cooling device, and includes a first terminal for controlling and supplying power to the electronic heating element, and a second terminal for supplying power to the fan. And an extension cord or an electronic device side terminal for connecting each terminal to an electronic device on which the electronic heating element is mounted.
With such a configuration, the electronic heating element and the electronic heating element cooling device can be collectively attached to the outside of the electronic device. At this time, since the electronic heating element cooling device does not require a power source such as a circulation pump, it is not necessary to mount a large number of power terminals in the external kit, and the external heating becomes easy.

An electronic heating element assembly with a cooling device according to the present invention includes a cylindrical body, a radiating fin that is formed integrally with a cylindrical surface of the cylindrical body and protrudes outward from the cylindrical surface, and a top plate that closes an upper end of the cylindrical body. An air heating pipe that is inserted into the cylindrical surface and allows ventilation from a fan or natural wind, and an electronic heating element, and the radiating fin has a hollow portion that communicates with an internal space of the cylindrical body, and the cylindrical body The upper surface of the electronic heating element is directly connected to the lower end of the electronic heating element so that the lower end is closed, and the electronic heating element is cooled by the cooling liquid accommodated in the inner space of the cylindrical body and the hollow portions of the radiating fins.
With such a configuration, the cooling liquid comes into direct contact with the surface of the electronic heating element, so that the cooling effect is increased. From the viewpoint of preventing corrosion of the surface of the electronic heating element, it is preferable to provide a rust-proof coating on the surface of the electronic heating element.

  According to the present invention, a cooling device with low manufacturing cost and high cooling efficiency can be obtained.

Hereinafter, a cooling device according to a first embodiment of the present invention will be described with reference to the drawings. 1st Embodiment is a case where a cooling target object is electronic heating elements, such as CPU, and is a case where a cooling device contacts a cooling target object directly.
FIG. 1 is an overall configuration diagram of an electronic heating element cooling device 100 according to a first embodiment of the present invention. In this figure, an electronic heating element cooling device 100 includes a rectangular tubular cylinder 10, a plurality of plate-like heat radiation fins 2 formed on four cylindrical surfaces of the cylindrical body and protruding outward, and a fan 50. The blower pipe 4 inserted so as to penetrate from the front-side cylinder surface 10a to the rear-side cylinder surface 10b, the top plate 12 that closes the upper end of the cylinder, and the electronic heating element that closes the lower end of the cylinder And a bottom plate 14 that conducts heat in contact with 30.

The radiating fin 2 is formed integrally with the cylindrical surface, and the radiating fin 2 has a hollow portion communicating with the internal space of the cylindrical body 10. And the electronic heating element 30 is cooled with the cooling liquid accommodated in the internal space of the cylinder and the hollow portion of the heat radiating fin.
Further, the blower pipe 4 allows the air blown from the fan 50 to pass therethrough, and at this time, the coolant in the cylinder 10 touches the wall surface of the blower pipe 4 to be cooled. Therefore, a predetermined screw hole for attaching the fan 50 is provided in the cylindrical surface 10a. In addition, you may provide the screw hole for fan attachment in each of the four cylinder surfaces in the cylinder 10 as needed so that a fan can be attached to the position which obtains the largest ventilation effect.
In this embodiment, the bottom plate 14 has a bottomed rectangular tube shape whose diameter increases from the bottom surface toward the opening end, and the diameter of the opening end is substantially the same as the diameter of the lower end of the cylindrical body 10. Therefore, when the bottom plate 14 and the cylinder 10 are connected, the side surface of the bottom plate 14 forms a part of the cylinder surface of the cylinder 10, and the cylinder surface forms a slope that recedes toward the electronic heating element 30 side. For example, the cylindrical surface 10a on the front side is connected to a slope 14a that retreats toward the electronic heating element 30 side.

As the electronic heating element 30, a CPU that is a control unit of a computer can be usually used. The electronic heating element cooling device can be made of, for example, a metal such as aluminum, copper, nickel, and stainless steel having excellent thermal conductivity, or an alloy thereof. In particular, aluminum, copper, and alloys thereof that are easy to form are preferable in that the cylindrical surface of the cylindrical body and the heat radiation fin are integrally formed as described later. The method of attaching the top plate 12 and the bottom plate 14 to the cylindrical body 10 is not particularly limited, and may be fixed so that it cannot be removed by welding, soldering, or the like, and can be removed by attaching a water-tight seal to the mounting portion and screwing. It may be fixed.
Further, the bottom surface of the bottom plate 14 preferably has substantially the same size and shape as the top surface of the electronic heating element 30 so that the heat of the electronic heating element 30 can be efficiently conducted. A predetermined head may be interposed between the bottom plate 14 and the electronic heating element 30 according to the size and shape of the electronic heating element 30.

  The coolant is not particularly limited, and for example, water, alcohol, refrigerant, automobile engine coolant (coolant), or the like can be used. The cooling liquid may be filled before the top plate 12 is attached to the cylindrical body 10, or may be filled from a cooling liquid inlet provided in the top plate 12 or the cylindrical body 10, for example. After filling the coolant, the opening is sealed so that the coolant does not evaporate. When the amount of the filling liquid is adjusted so that the liquid level of the cooling liquid is below the uppermost surface of the cylindrical body 10, the cooling liquid is easily evaporated and condensed in the cylindrical body 10, thereby improving the exhaust heat effect.

According to the electronic heating element cooling apparatus according to the first embodiment of the present invention, the entire apparatus also serves as a coolant tank, so that the apparatus becomes compact. Further, since the cooling liquid is accommodated in the hollow portion of the heat radiating fin, the heat of the cooling liquid in the cylinder 10 is efficiently radiated from the heat radiating fin. Furthermore, since the air from the fan can be passed through the blower pipe inserted through the cylinder surface, the heat of the coolant in the cylinder 10 is discharged more efficiently.
Further, since at least the front cylindrical surfaces 10a and 14a through which the blower pipe 4 is inserted are retracted toward the electronic heating element 30, the air blown from the fan 50 attached to this surface is transmitted electronically. Guide to the body 30 side. Therefore, since the outside air directly hits the electronic heating element 30, it is possible to prevent condensation of the electronic heating element 30 due to cooling.

  2 is a cross-sectional view taken along line II-II in FIG. The upper end of the cylindrical body 10 is closed with the top plate 12, and the lower end of the cylindrical body is closed with the bottom plate 14, thereby forming an internal space of the cylindrical body 10, and the space is filled with a cooling liquid. The liquid level L of the cooling liquid is, for example, about ½ of the height of the cylindrical body 10. The bottom plate 14 has a side surface 14a that extends upward from the bottom surface 14b side.

The method of integrally forming the radiating fins 2 with the cylindrical body 10 is not particularly limited. For example, a wall surface of a cylindrical material can be molded, drawn, or extruded.
FIG. 3 is a process diagram showing an example of a method for forming the radiating fin 2 integrally with the cylindrical body 10. In this figure, first, a rectangular tubular aluminum material (square pipe) 9x is prepared (FIG. 3A). Next, this material is placed in a predetermined mold. The inner surface shape of this mold is almost the same as the outer shape of the cylinder 10 and the heat radiating fins 2.
Then, by performing a hydroforming process that closes the end of the material 9x and applies water pressure to the inside thereof, a part of the wall surface of the material 9x enters the inner surface of the mold, and the heat radiating fin precursor 2x integrated with the cylinder 10 Is formed (FIG. 3B). Here, since the radiation fin precursor 2x is formed by stretching the wall surface of the material 9x, the interior of the radiation fin precursor 2x is hollow and communicates with the internal space of the cylindrical body 10.
Next, the cylindrical body 10 is taken out from the mold. Since the hollow portion is exposed at the end face of the radiating fin precursor 2x, it is processed so that the end faces of the radiating fin precursor 2x are crushed, and the hollow portion is sealed (FIG. 3C). The hollow portion may be sealed by soldering or the like on the end face of the heat radiation fin precursor 2x. And as shown in FIG. 2, what is necessary is just to block | close the upper and lower ends of the cylinder 10 with a top plate and a bottom plate.

  As described above, by forming the radiating fins integrally with the cylindrical body, the manufacturing is simplified as compared with the case where the fins are manufactured separately, and the protruding radiating fins have a reinforcing effect as ribs. Even if the thickness of the body is reduced, the strength can be secured and the amount of material used can be reduced. In particular, when expensive copper or aluminum is used as the material, forming the fins by cutting out a solid material as in the past (for example, FIG. 1 of Patent Document 2) increases the material cost, but the embodiment of the present invention. In this case, since the heat radiating fins and the cylinder can be formed without waste from the pipe material or the like, the material cost is reduced.

FIG. 4 shows an external kit for an electronic heating element according to an embodiment of the present invention. The external kit 120 includes a first terminal (CPU socket board) 122 for controlling and supplying power to the electronic heating element 30, and a second terminal (terminal with cord) 124 for supplying power to the fan 50; An extension cord 126 for connecting each terminal to the electronic device 200 is provided. The electronic device 200 is a personal computer, for example, and the electronic heating element 30 is mounted to control the device. The fan 50 is attached to the electronic heating element cooling device 100 of the present invention.
The second terminal 124 is connected to the first terminal 122. One end of the extension cord 126 is connected to the first terminal 122, and the other end is connected to the electronic device side terminal 128. Then, by connecting the electronic device side terminal 128 to the control board (motherboard) 210 of the electronic device 200, the electronic heating element 30 is controlled and supplied with power, and the fan 50 is supplied with power through the control board 210.

As described above, since the electronic heating element cooling device 100 does not require a power source such as a circulation pump, it is not necessary to mount many power supply terminals on the external kit side, and the electronic heating element, the electronic heating element cooling device, Can be easily attached to the outside of the electronic device.
When the control board (motherboard) 210 is disposed at the end (near the front or top surface) of the electronic device 200, the extension cord 126 may not be used. That is, the external kit may include the first terminal and the second terminal, and the electronic device side terminal 128 may be connected to the first terminal and the second terminal without using the extension cord. In this case, by connecting the electronic device side terminal 128 directly to the mother board 210, the first terminal and the second terminal are exposed from the electronic device body, and the CPU and the cooling device can be connected.
In such a case, for example, a motherboard is placed near the front plate or top plate of the case of a desktop personal computer or notebook computer, and the socket (electronic device side terminal) of the external kit is connected to the motherboard from the opening of the case. It is assumed that the CPU and the cooling device are connected to other sockets (first terminal and second terminal) of the external kit as well as connecting.

FIG. 5 is a side view showing an embodiment in which the tubular body 20 and the liquid-filled pipe 40 are further provided in the electronic heating element cooling device of FIG. In FIG. 5, the same components as those in FIG. The cylindrical body 20 has an upper end that opens upward, and a body that is connected to the upper end is curved to reach the lower end. The lower end of the barrel portion 20 opens in the lateral direction by the barrel portion being bent at a substantially right angle. The upper end of the trunk portion 20 is connected to the cylinder 10, and the lower end surface of the trunk portion 20 is connected to the surface of the electronic heating element 30.
In this embodiment, the mother board 210 is arranged vertically in the personal computer, the CPU socket 210a for connecting to the electronic heating element 30 is provided on the surface of the mother board 210, and the electronic heating element 30 is arranged vertically along the mother board 210 surface. Connected to. In this embodiment, by using the curved body portion 20, the cooling device can be installed at a desired position regardless of the direction of the electronic heating element.

  In FIG. 5, the liquid-filled pipe 40 is connected to the side surface (cylinder surface) of the cylinder body 10. Specifically, one end of the liquid-filled pipe 40 is pivotally supported at right angles to the side surface of the cylindrical body 10, and the liquid-filled pipe 40 extends to the outside so as not to interfere with the heat radiating fins (not shown). Bent to the other end. A screw-type lid 40a is attached to the other end of the liquid-filled pipe 40 and is closed. Regardless of the orientation of the device, the coolant can be easily filled or replenished from the fluid-filled pipe by rotating so that the tip of the fluid-filled pipe faces upward.

FIG. 6 shows an electronic heating element assembly with a cooling device according to an embodiment of the present invention. The electronic heating element assembly with a cooling device has the same configuration as the electronic heating element cooling device described above except that one end of the cylinder is closed with the surface of the electronic heating element instead of being closed with the top plate (or bottom plate). Are the same. Therefore, in FIG. 6, the same components as those in FIG.
Unlike the cylinder 10 of FIG. 1, the lower end of the cylinder 10 v of FIG. 6 is not narrowed and has an edge smaller than the upper edge of the electronic heating element 30. Then, the electronic heating element 30 and the cooling device are integrated by bringing the lower end of the cylindrical body 10v and the upper surface of the electronic heating element 30 into contact (or fitting) and fixing with welding, soldering, adhesive, or the like. Can do. For example, this assembly can be easily assembled by attaching a cooling device at the same time when manufacturing a CPU called a box product (custom product).

Next, a cooling device according to a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, the object to be cooled is an internal combustion engine such as an automobile engine, and the cooling device does not directly contact the object to be cooled, and the coolant from the object to be cooled is circulated to the cooling device.
FIG. 7 is an overall configuration diagram of a cooling device 100B according to the second embodiment of the present invention. In this figure, the cooling device 100B includes a rectangular tubular cylinder 16, a plurality of plate-like heat radiation fins 2B that are formed on the opposing side surfaces of the four cylindrical surfaces of the cylindrical body and project outward, and the front surface. A plurality of blower pipes 4B inserted so as to penetrate from the cylindrical surface 16a on the side to the cylindrical surface 16b on the back side, a top plate 12B that closes the upper end of the cylindrical body, and a bottom plate (not shown) that closes the lower end of the cylindrical body Z)).
The object to be cooled (gasoline engine) 30B includes a jacket 30Bx for cooling the cylinder head at the top, and coolant is stored in the jacket 30Bx. The jacket 30Bx is connected to the cooling device 100B by pipes 31 and 32. Then, by a water pump (not shown), the coolant flows into the upper part of the cooling device 100B from the jacket 30Bx via the pipe 31, and returns from the lower part of the cooling device 100B to the jacket 30Bx via the pipe 32. .
In the second embodiment, the fan is disposed in front of the cylindrical surface 16a (not shown). Further, when a vehicle equipped with the engine 30B is operated, a traveling wind is generated in the direction of the arrow V in the figure, but the blower pipe 4B is arranged in a direction parallel to the traveling wind V and takes in the traveling wind. .
Further, a cap 101 is attached to the top plate 12B, so that the coolant can be replenished into the cooling device 100B.

  In the case of an internal combustion engine, the amount of heat generated is large, and cooling is often performed by circulating a coolant from a jacket or the like provided in the internal combustion engine to a cooling device. However, a battery cell (fuel cell vehicle) that generates a relatively small amount of heat. In the case of a fuel cell or a secondary battery of an electric vehicle) or an electric motor (such as a motor of an electric vehicle) mounted on the battery, as in the first embodiment, the battery cell or the electric motor is directly brought into contact with the cooling device for cooling. be able to.

  Since the cooling device 100B according to the second embodiment has substantially the same configuration as the cooling device 100 according to the first embodiment, detailed description thereof is omitted. Further, the internal combustion engine is not particularly limited, such as a gasoline engine such as an automobile or a truck, a diesel engine, a motorcycle engine, a marine engine, or the like.

In this embodiment, the top plate, bottom plate, and cylinder (including fins) of the front portion are integrally molded (press processing, etc.) with the center line C in the figure as the boundary, and the rear surface with the center line C as the boundary. After the top plate, the bottom plate, and the cylindrical body of the part are integrally formed (press processing or the like), the front part and the rear part can be joined by welding or the like to manufacture the cooling device. And what is necessary is just to insert a ventilation pipe, after couple | bonding a front-surface part and a rear surface part.
According to the second embodiment, since the whole is a tank type for storing the coolant, the amount of coolant stored is larger than that of a conventional radiator, and a thin pipe like a conventional radiator is used as a fin. Since it is not arranged around, the flow of the coolant is improved (the cooling effect is also improved). In addition, since a thin pipe is not used unlike a conventional radiator, there is no trouble of clogging of the pipe, the structure is simple and robust, the production efficiency is high, and the cost can be reduced.

In the present invention, the cross section of the cylindrical body is not limited to a rectangular shape, and can be designed freely, for example, a circular shape. Further, as shown in FIG. 1 described above, the blower pipe may be inserted between the top plate and the bottom plate without being limited to the case where the blower pipe penetrates the cylindrical surface of the cylindrical body. Further, unless the electronic heating element is positioned in the direction in which the blower pipe extends (for example, in the case of FIG. 1, the direction in which the blower pipe is inserted through the top plate and the bottom plate is not possible because it interferes with the electronic heating element). There may be a plurality of directions. For example, another blower pipe may extend in a direction intersecting with the blower pipe 4 shown in FIG.
In addition to these, instead of providing heat radiation fins on the entire cylindrical surface of the cylindrical body as shown in FIG. 1 described above, a part of the cylindrical surface may be flat to serve as a contact surface with the electronic heating element.

1 is an overall configuration diagram of a cooling device according to a first embodiment of the present invention. It is sectional drawing which follows the II-II line | wire of FIG. It is process drawing which shows an example of the method of forming a radiation fin integrally with a cylinder. It is a figure which shows the external kit for electronic heating elements which concerns on embodiment of this invention. It is a side view of the electronic heating element cooling device concerning another embodiment of the present invention. It is a side view which shows the electronic heating element assembly with a cooling device which concerns on embodiment of this invention. It is a whole block diagram of the cooling device which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

2, 2B Radiation fin 2x Radiation fin precursor 4, 4B Blower pipe 10, 16 Cylindrical body 10a, 10b, 16a, 16b Cylindrical surface 12, 12B Top plate 14 Bottom plate 30, 30B Cooling object (electronic heating element, engine)
50 Fan 100, 100B Cooling device 120 External kit 122 First terminal 124 Second terminal 126 Extension cord 200 Electronic device

Claims (9)

A cylindrical body, a radiating fin that is integrally formed with the cylindrical surface of the cylindrical body and protrudes outward from the cylindrical surface, a top plate and a bottom plate that respectively close an upper end and a lower end of the cylindrical body,
A blower pipe that is inserted between the cylindrical surface or the top plate and the bottom plate and allows ventilation from a fan or natural wind;
A contact plane that is formed on any of the cylindrical surface, the top plate, and the bottom plate and that conducts heat in contact with the object to be cooled;
The radiating fin has a hollow portion communicating with the internal space of the cylindrical body,
The cooling device which cools the said cooling target object with the cooling fluid accommodated in the internal space of the said cylinder, and the hollow part of the said radiation fin. A cylindrical body, a radiating fin that is integrally formed with the cylindrical surface of the cylindrical body and protrudes outward from the cylindrical surface, a top plate and a bottom plate that respectively close an upper end and a lower end of the cylindrical body,
A blower pipe that is inserted between the cylindrical surface or the top plate and the bottom plate and allows ventilation from a fan or natural wind;
The radiating fin has a hollow portion communicating with the internal space of the cylindrical body,
The cooling device which cools the said cooling target object by the cooling fluid which contacts a cooling target object and conducts heat enters / exits the internal space of the said cylinder, and the hollow part of the said radiation fin. The cooling device according to claim 1 or 2, wherein the cylindrical body and the radiating fin are obtained by molding a wall surface of a cylindrical material, or are obtained by drawing or extrusion molding. One of the cylindrical surface, the top plate, or the bottom plate through which the blower pipe is inserted retreats toward the object to be cooled, and is from a fan attached to the surface or natural wind. The cooling device according to claim 1, wherein the air blow by is guided to the object to be cooled. A liquid-filled pipe is attached to the outer surface of any one of the cylindrical surface, the top plate, and the bottom plate, and is pivotally supported in the outer surface so that the tip of the liquid-filled pipe is removable. The cooling device according to any one of claims 1 to 4, wherein the cooling device is closed. The cooling device according to any one of claims 1 to 5, wherein the top plate or the bottom plate and the cylindrical surface are connected by a cylindrical body. The cooling device according to any one of claims 1 to 6, wherein the object to be cooled is an electronic heating element, a battery cell, an electric motor, or an internal combustion engine. 8. The cooling device according to claim 7, wherein a first terminal for controlling and supplying power to the electronic heating element, a second terminal for supplying power to the fan, and each terminal are connected to the electronic heating element. External heating kit for cooling an electronic heating element, comprising an extension cord or an electronic device side terminal for connecting to an electronic device on which is mounted. A cylindrical body, a radiating fin that is integrally formed with the cylindrical surface of the cylindrical body and protrudes outward from the cylindrical surface, and a top plate that closes an upper end of the cylindrical body;
A blower pipe that is inserted through the cylinder surface and passes air from a fan or by natural wind;
An electronic heating element,
The radiating fin has a hollow portion communicating with the internal space of the cylindrical body,
The upper surface of the electronic heating element is directly connected to the lower end of the cylindrical body and the lower end is closed,
The electronic heating element assembly with a cooling device which cools the said electronic heating element with the cooling fluid accommodated in the internal space of the said cylinder, and the hollow part of the said radiation fin.

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