JPH03134453A - Heat dissipation device - Google Patents

Heat dissipation device

Info

Publication number
JPH03134453A
JPH03134453A JP26970389A JP26970389A JPH03134453A JP H03134453 A JPH03134453 A JP H03134453A JP 26970389 A JP26970389 A JP 26970389A JP 26970389 A JP26970389 A JP 26970389A JP H03134453 A JPH03134453 A JP H03134453A
Authority
JP
Japan
Prior art keywords
heat
heat dissipation
cooling
dissipation device
heat pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP26970389A
Other languages
Japanese (ja)
Inventor
Mitsuhiko Nakada
仲田 光彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP26970389A priority Critical patent/JPH03134453A/en
Publication of JPH03134453A publication Critical patent/JPH03134453A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To raise cooling efficiency by arranging a heating part of a heat pipe near a heater and a cooling part at the tip end of a cooling fin and containing the heat pipe in a cooling fin of a heat dissipation device. CONSTITUTION:A heating part of a heat pipe 4 is arranged near a heater 5 and a cooling part is arranged at the tip end of a cooling fin 1a of the heat dissipation device 1, and the cooling fin 1a of the heat dissipation device 1 is contained in the heat pipe 4. Accordingly, fluid of the heating part of the heat pipe 4 takes vaporization heat by heat produced in the heater 5 on which the heat dissipation device 1 is mounted and is vaporized into a vapor which is vaporized moves in turn in the heat pipe 4 and frees condensation heat upon being cooled in a cooling part for its liquefaction. Hereby, heat from the heater 1 can effectually be dissipated.

Description

【発明の詳細な説明】 〔概 要〕 放熱効率を向上させる放熱装置の構造の改良に関し、 簡単且つ容易に調達することが可能なヒートパイプを内
蔵した放熱装置の提供を目的とし、発熱体から発生する
熱を、冷却フィンを用いることにより、周囲の空気の流
動によって放散させる放熱装置であって、ヒートパイプ
の加熱部を前記発熱体の近傍に、冷却部を前記冷却フィ
ンの先端部に配設して前記ヒートパイプを前記放熱装置
の前記冷却フィンに内蔵するよう構成する=〔産業上の
利用分野〕 本発明は、放熱効率を向上させる放熱装置の構造の改良
に関するものである。
[Detailed Description of the Invention] [Summary] Regarding the improvement of the structure of a heat dissipation device that improves heat dissipation efficiency, the present invention aims to provide a heat dissipation device with a built-in heat pipe that can be easily and easily procured. A heat dissipation device that uses cooling fins to dissipate generated heat through the flow of surrounding air, the heating part of the heat pipe being disposed near the heating element, and the cooling part disposed at the tip of the cooling fin. [Industrial Application Field] The present invention relates to an improvement in the structure of a heat dissipation device that improves heat dissipation efficiency.

発熱体、例えば集積回路装置はその集積度の向上に伴っ
て発熱量が増加するが、発熱量が増加する割には集積回
路装置のパッケージの体積・表面積は増加せず、従って
放熱装置の取り付は面積が変わらないために放熱効率の
高い放熱装置が必要になっている。
Heat generating elements, such as integrated circuit devices, generate more heat as their degree of integration increases, but the volume and surface area of integrated circuit device packages do not increase despite the increase in heat generation. Since the surface area of the base does not change, a heat dissipation device with high heat dissipation efficiency is required.

以上のような状況から取り付は面積を増加させずに放熱
効率を高くすることが可能な放熱装置が要望されている
Under the above circumstances, there is a demand for a heat radiating device that can increase heat radiating efficiency without increasing the installation area.

〔従来の技術〕[Conventional technology]

従来の放熱装置を第5図(a)及び(b)により詳細に
説明する。
A conventional heat radiating device will be explained in detail with reference to FIGS. 5(a) and 5(b).

第5図(a)はフィン付放熱装置11の断面図であり、
この放熱装置は発熱体5の表面にエポキシ系接着剤によ
る接着或いははんだ付けによって固着されている。
FIG. 5(a) is a cross-sectional view of the finned heat dissipation device 11,
This heat dissipation device is fixed to the surface of the heating element 5 by adhesion with an epoxy adhesive or soldering.

フィン付放熱装置11の冷却フィンllaはアルミニウ
ム或いは銅等の熱伝導度の高い金属からなり、本実施例
ではフィンの外径は19n、フィンとフィンの間の小径
部の外径は8flであり、このような形状は機械加工に
よって形成されている。
The cooling fins lla of the finned heat dissipation device 11 are made of metal with high thermal conductivity such as aluminum or copper, and in this embodiment, the outer diameter of the fins is 19n, and the outer diameter of the small diameter portion between the fins is 8fl. , such a shape is formed by machining.

発熱体5から伝導によって伝えられる熱により冷却フィ
ンllaが加熱されるので、図示しない送風機から風に
送ってこの冷却フィンllaの熱を放熱している。
Since the cooling fins lla are heated by the heat transferred from the heating element 5 by conduction, the heat of the cooling fins lla is radiated by sending it to the wind from a blower (not shown).

第5図(blは櫛形放熱装置13の斜視図であり、この
櫛形放熱装置13のベース13bを発熱体5に固着する
手段は第5図(a)のフィン付放熱装置11の場合と同
じである。
FIG. 5 (bl is a perspective view of the comb-shaped heat radiating device 13, and the means for fixing the base 13b of this comb-shaped heat radiating device 13 to the heating element 5 is the same as in the case of the finned heat radiating device 11 in FIG. 5(a). be.

この櫛形放熱装置13においては、発熱体5で発生した
熱は発熱体5から伝導によりベース13bに伝えられ、
更に上方に設けられている冷却フィン13aまで伝導に
よって熱が伝えられ、図示しない送風機から風を送って
この冷却フィン13aの熱を放熱している。
In this comb-shaped heat dissipation device 13, the heat generated by the heating element 5 is transmitted from the heating element 5 to the base 13b by conduction,
The heat is further transmitted by conduction to the cooling fins 13a provided above, and the heat from the cooling fins 13a is radiated by blowing air from a blower (not shown).

このように従来の放熱装置においては、発生した熱は放
熱装置の中を伝導により移動し、高温になった放熱装置
の冷却フィンの表面は送風機から送られる風によって冷
却されて放熱が行われている。
In this way, in conventional heat dissipation devices, the generated heat moves through the heat dissipation device by conduction, and the surface of the cooling fins of the heat dissipation device, which has become hot, is cooled by the air sent from the blower and heat is dissipated. There is.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

以上説明した従来の放熱装置においては、放熱効率を高
めるために、冷却フィンの表面に送る冷却風の風量を増
加させようとすると、ファンが大型化するので、運転中
のファンの騒音・電力が増大するという問題点があって
実用的でない。また、もう一つの手段として冷却フィン
の長平方向の長さしを増加して放熱面積を拡大する方法
があるが、第6図(a)に示すように冷却フィンの長さ
を無作為に長くしても外気との温度差が減少してフィン
効率が低下してしまうため、第6図(blに示すように
冷却効果が上がらないという問題点があった。
In the conventional heat dissipation device described above, when trying to increase the amount of cooling air sent to the surface of the cooling fins in order to improve heat dissipation efficiency, the fan becomes larger, which reduces the noise and power of the fan during operation. It is not practical due to the problem of increased size. Another method is to increase the length of the cooling fins in the horizontal direction to expand the heat dissipation area, but as shown in Figure 6 (a), the length of the cooling fins is randomly increased. However, since the temperature difference with the outside air decreases and the fin efficiency decreases, there is a problem that the cooling effect is not improved as shown in FIG. 6 (bl).

本発明は以上のような状況から簡単且つ容易に調達する
ことが可能なヒートパイプを内蔵した放熱装置の提供を
目的としたものである。
The present invention aims to provide a heat dissipation device with a built-in heat pipe that can be easily and easily procured under the above circumstances.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の放熱装置は、発熱体から発生する熱を、冷却フ
ィンを用いることにより、周囲の空気の流動によって放
熱させる放熱装置であって、ヒートパイプの加熱部をこ
の発熱体の近傍に、冷却部をこの冷却フィンの先端部に
配設してこのヒートパイプを放熱装置の冷却フィンに内
蔵するよう構成する。
The heat dissipation device of the present invention is a heat dissipation device that dissipates heat generated from a heat generating element through the flow of surrounding air by using cooling fins. The heat pipe is arranged at the tip of the cooling fin, and the heat pipe is built into the cooling fin of the heat dissipation device.

〔作用〕[Effect]

即ち本発明においては、放熱装置に内蔵させるヒートパ
イプの加熱部を発熱体の近傍に、冷却部をこの放熱装置
の冷却フィンの先端部に配設してこのヒートパイプを放
熱装置の冷却フィンに内蔵するから、放熱装置を取り付
けた発熱体において発生した熱により、ヒートパイプの
加熱部の液体が気化熱を奪って蒸発して蒸気になり、こ
の蒸気がヒートパイプの中を移動し、加熱部の反対側の
冷却部で冷却される際に凝縮熱を放出して液化するので
、冷却フィンの熱伝導のみによって加熱体の発熱を放熱
するのと比較すると、液体の気化或いは凝縮の潜熱を利
用するので、冷却効率を高くすることが可能となる。
That is, in the present invention, the heating part of the heat pipe built into the heat radiating device is arranged near the heating element, and the cooling part is arranged at the tip of the cooling fin of the heat radiating device, so that the heat pipe is connected to the cooling fin of the heat radiating device. Because it is built-in, the heat generated in the heating element attached to the heat dissipation device removes the heat of vaporization from the liquid in the heating part of the heat pipe and evaporates into steam, which moves through the heat pipe and heats the heating part. When it is cooled in the cooling section on the opposite side, it releases the heat of condensation and becomes liquefied, so compared to dissipating the heat generated by the heating element only by heat conduction through the cooling fins, it is possible to utilize the latent heat of vaporization or condensation of the liquid. Therefore, it is possible to increase the cooling efficiency.

〔実施例〕〔Example〕

以下第1図〜第4図を用いて本発明の一実施例を説明す
る。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

第1図(a)は本発明による第1の実施例のフィン付放
熱装置1の斜視図、第1図(blは中心断面図である。
FIG. 1(a) is a perspective view of a finned heat dissipation device 1 according to a first embodiment of the present invention, and FIG. 1 (bl is a center sectional view).

この実施例のフィン付放熱装置の概略形状及び発熱体5
への固着方法は従来のフィン付放熱装置11と同じであ
るが、図に示すように外径8mmの中心部の中央にはヒ
ートパイプ4を内蔵しており、はんだ付けにより固定し
ている。
Schematic shape and heating element 5 of the finned heat dissipation device of this example
The fixing method is the same as that of the conventional finned heat dissipation device 11, but as shown in the figure, a heat pipe 4 is built in the center of the center with an outer diameter of 8 mm, and is fixed by soldering.

第2図(a)は本発明による第2の実施例の平面図、第
2図(b)はA−A断面図である。
FIG. 2(a) is a plan view of a second embodiment of the present invention, and FIG. 2(b) is a sectional view taken along line A-A.

この実施例においては、発熱体5の表面に放熱装置のベ
ース2bがエポキシ系接着剤による接着或いははんだ付
けによって固着されている。
In this embodiment, a base 2b of a heat radiating device is fixed to the surface of the heating element 5 by adhesion with an epoxy adhesive or soldering.

ベース2bの上面には穴が設けられており、この穴にヒ
ートパイプ4の加熱部4aを挿入してはんだ付けにより
固定し、ヒートパイプ4の冷却部4bには冷却フィン2
aをはんだ付けにより固定している。
A hole is provided in the upper surface of the base 2b, and the heating part 4a of the heat pipe 4 is inserted into this hole and fixed by soldering.
A is fixed by soldering.

第3図は本発明による第3の実施例の斜視図であり、本
実施例の櫛形放熱装置3の本体は従来の櫛形放熱装置1
3と同じであるが、ヒートパイプ4を第1の実施例と同
様に冷却フィン3aの内部に、はんだ付けによって固定
している。
FIG. 3 is a perspective view of a third embodiment of the present invention.
3, but the heat pipe 4 is fixed inside the cooling fin 3a by soldering as in the first embodiment.

このように放熱装置にヒートパイプ4を内蔵するから、
ヒートパイプ4の加熱部4aの液体が気化熱を奪って蒸
発して蒸気になり、この蒸気がヒートパイプ4の中を移
動し、加熱部4aの反対側の冷却部4bで冷却される際
に凝縮熱を放出して液化するので、冷却フィンの熱伝導
のみによって発熱体5の発熱を放熱する従来の放熱装置
と比較すると、液体の気化或いは凝縮の潜熱を利用する
ので、冷却効率を高くすることが可能となる。
Since the heat pipe 4 is built into the heat dissipation device in this way,
When the liquid in the heating section 4a of the heat pipe 4 absorbs the heat of vaporization and evaporates into steam, this vapor moves through the heat pipe 4 and is cooled in the cooling section 4b on the opposite side of the heating section 4a. Since the heat of condensation is released and the liquid is liquefied, the cooling efficiency is increased because the latent heat of vaporization or condensation of the liquid is used, compared to a conventional heat radiating device that radiates the heat generated by the heating element 5 only by heat conduction through the cooling fins. becomes possible.

〔発明の効果〕〔Effect of the invention〕

以上の説明から明らかなように本発明によれば、ヒート
パイプを用いる極めて簡単な構造の改良により、発熱体
の発熱を極めて効率良く放熱することが可能となる利点
があり、著しい経済的及び、信転性向上の効果が期待で
きる放熱装置の提供が可能である。
As is clear from the above description, the present invention has the advantage that the heat generated by the heating element can be radiated extremely efficiently by improving the extremely simple structure using a heat pipe, resulting in significant economical and It is possible to provide a heat dissipation device that can be expected to have the effect of improving reliability.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明による第1 第2図は本発明による第2 第3図は本発明による第3 図、 の実施例を示す図、 の実施例を示す図、 の実施例を示す斜視 第4図は本発明と従来の放熱装置のフィン効率の差異を
示す図、 第5図は従来の放熱装置を示す図、 第6図は従来の放熱装置の問題点を示す図、である。 図において、 1はフィン付放熱装置、 1aは冷却フィン、 2aは冷却フィン、 2bはベース、 3は櫛形放熱装置、 3a冷却フイン、 3bはベース、 4はヒートパイプ、 4aは加熱部、 4bは冷却部、 5は発熱体、 を示す。 fat斜視図 (′b) 中心断面図 本発明による第1の実施例を示す図 第  1  図 (at 平 面 図 bl A断面図 本発明による第2の実施例を示す図 第 図 (al フィン何故PlV装置の断面図 山) 櫛形放熱装置の斜視図 従来の放熱装置を示す図 第 5 図 本発明による第3の実施例を示す斜視図第 図 長 さ(L) 本発明と従来の放熱装置のフィン効率の差異を示す図第 図 長 さ(L) (al 効 率 長 さ(L) 山) 放 熱 効 果 従来の放P装置の問題点を示す図 第 図
FIG. 1 is a diagram according to the present invention. FIG. 2 is a diagram according to the present invention. FIG. 3 is a diagram according to the present invention. FIG. 4 is a diagram showing the difference in fin efficiency between the present invention and a conventional heat radiating device, FIG. 5 is a diagram showing the conventional heat radiating device, and FIG. 6 is a diagram showing problems with the conventional heat radiating device. In the figure, 1 is a heat dissipation device with fins, 1a is a cooling fin, 2a is a cooling fin, 2b is a base, 3 is a comb-shaped heat dissipation device, 3a is a cooling fin, 3b is a base, 4 is a heat pipe, 4a is a heating section, 4b is a 5 is a heating element. Fat perspective view ('b) Center sectional view A diagram showing the first embodiment according to the present invention Figure 1 (at Plan view BL A sectional view Diagram showing the second embodiment according to the present invention Cross-sectional view of the device Fig. 5 A perspective view of a comb-shaped heat radiating device A diagram showing a conventional heat radiating device Fig. 5 A perspective view showing a third embodiment according to the present invention Length (L) Fins of the present invention and a conventional heat radiating device Diagram showing the difference in efficiency Length (L) (al Efficiency length (L) Mountain) Heat dissipation effect Diagram showing the problems of conventional P dissipation equipment

Claims (1)

【特許請求の範囲】 発熱体(5)から発生する熱を、冷却フィンを用いるこ
とにより、周囲の空気の流動によって放熱させる放熱装
置であって、 ヒートパイプ(4)の加熱部(4a)を前記発熱体(5
)の近傍に、冷却部(4b)を前記冷却フィンの先端部
に配設して前記ヒートパイプ(4)を前記放熱装置の前
記冷却フィンに内蔵することを特徴とする放熱装置。
[Claims] A heat radiating device that radiates heat generated from a heating element (5) through the flow of surrounding air by using cooling fins, the heating part (4a) of a heat pipe (4) The heating element (5
), a cooling unit (4b) is disposed at the tip of the cooling fin, and the heat pipe (4) is built into the cooling fin of the heat radiating device.
JP26970389A 1989-10-16 1989-10-16 Heat dissipation device Pending JPH03134453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26970389A JPH03134453A (en) 1989-10-16 1989-10-16 Heat dissipation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26970389A JPH03134453A (en) 1989-10-16 1989-10-16 Heat dissipation device

Publications (1)

Publication Number Publication Date
JPH03134453A true JPH03134453A (en) 1991-06-07

Family

ID=17476011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26970389A Pending JPH03134453A (en) 1989-10-16 1989-10-16 Heat dissipation device

Country Status (1)

Country Link
JP (1) JPH03134453A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7156158B2 (en) 1997-10-20 2007-01-02 Fujitsu Limited Heat pipe type cooler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113578A (en) * 1974-06-21 1976-02-03 Siemens Ag HIRAGATAHANDOTAISOSHINO KUREISOCHI
JPS5239849A (en) * 1975-09-25 1977-03-28 Meidensha Electric Mfg Co Ltd Cooling apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5113578A (en) * 1974-06-21 1976-02-03 Siemens Ag HIRAGATAHANDOTAISOSHINO KUREISOCHI
JPS5239849A (en) * 1975-09-25 1977-03-28 Meidensha Electric Mfg Co Ltd Cooling apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7156158B2 (en) 1997-10-20 2007-01-02 Fujitsu Limited Heat pipe type cooler
US7721789B2 (en) 1997-10-20 2010-05-25 Fujitsu Limited Heat pipe type cooler

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