JP2004071615A - Protective cover and semiconductor device therewith - Google Patents

Protective cover and semiconductor device therewith Download PDF

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Publication number
JP2004071615A
JP2004071615A JP2002224615A JP2002224615A JP2004071615A JP 2004071615 A JP2004071615 A JP 2004071615A JP 2002224615 A JP2002224615 A JP 2002224615A JP 2002224615 A JP2002224615 A JP 2002224615A JP 2004071615 A JP2004071615 A JP 2004071615A
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JP
Japan
Prior art keywords
plate portion
protective cover
side plate
semiconductor device
window
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.)
Withdrawn
Application number
JP2002224615A
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Japanese (ja)
Inventor
Masataka Sakamoto
坂本 昌隆
Seiichiro Tsukui
津久井 誠一郎
Mitsuya Tanaka
田中 光矢
Koji Nagaoka
長岡 講二
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.)
Hitachi Ltd
Renesas Eastern Japan Semiconductor Inc
Micron Memory Japan Ltd
Original Assignee
Hitachi Ltd
Elpida Memory Inc
Renesas Eastern Japan Semiconductor Inc
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Filing date
Publication date
Application filed by Hitachi Ltd, Elpida Memory Inc, Renesas Eastern Japan Semiconductor Inc filed Critical Hitachi Ltd
Priority to JP2002224615A priority Critical patent/JP2004071615A/en
Publication of JP2004071615A publication Critical patent/JP2004071615A/en
Withdrawn legal-status Critical Current

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective cover that can suppress the temperature rise of a component or semiconductor device to a low level by efficiently radiating the heat generated from the component to the outside and can be reduced in the number of used members. <P>SOLUTION: This protective cover 21 has side plate sections 23 and 25 facing a substrate 13 on which a component 11 is mounted. The side plate sections 23 and 25 have directed plate sections 41 and 43 (143 or 241) which discharge an air flow B which is produced from an air flow A introduced into spaces between the side plate sections 23 and 25 and substrate 13 after the air flow A cools the component 11 to the outside of the sections 23 and 25. The directed plate sections 41 and 43 (143 or 241) confront the air flow A or B. In addition, this protective cover 21 has window sections 31 and 33 (131) through which the air flow A is taken in or the air flow B is discharged. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、基材に搭載される部品を保護すると共に、部品から発生する熱を放散させるために用いる保護カバー、ICメモリ、DRAM、チップ部品等の熱を発生する部品を搭載した基材に保護カバーを装着した保護カバー付き半導体装置に関するものである。
【0002】
【従来の技術】
近年、DRAM等の半導体メモリ素子の高速化、大容量化が急速に進められており、メモリ素子の高集積化に伴い、その発熱量も増加する傾向にある。また、半導体メモリ素子等の電子部品を収納する半導体装置には、小型化が要求される一方、単体DRAMの高速化による信号の時間遅延を補正するためのIC等が実装される場合があり、半導体メモリ素子以外にも多くのIC、チップ部品等の電子部品が搭載され、半導体装置に搭載する部品の点数は増加する傾向にある。
【0003】
半導体装置には保護カバーが設けられており、この保護カバーが複数の電子部品から発生する熱の放熱の妨げとなり、半導体装置よりも高温となる。また、近年の高速動作に伴う発熱量の増大が原因で半導体装置の動作不良が発生し大きな問題となっている。
【0004】
このような問題を解決するために、電子部品を冷却することが提案されている。例えば、特開平11−354701号公報には、放熱体及び放熱体を装着したメモリモジュールが開示されている。このメモリモジュールは、メモリIC等が実装された基板に基板への装着方向の断面がコの字型形状を成し、コの字型形状の内面は高熱伝導性ラバー等の高熱伝導性部材を介してメモリICに接触し、コの字型形状の外側表面に多数の凹凸が設けられたカバー状ヒートシンクが装着されているものである。
【0005】
【発明が解決しようとする課題】
しかしながら、従来のメモリモジュールでは、高熱伝導性部材を介してメモリICに接触し、コの字型形状の外側表面に多数の凹凸が設けられたカバー状ヒートシンクが装着されているので、部品点数が多くなり、組み立てが複雑となるという問題がある。
【0006】
それ故に、本発明の課題は、部品から発生する熱を効率良く外部へ放散させることができ、簡易な構成で熱を発生する部品や、部品の温度上昇を低く抑えることができる保護カバー、及び保護カバー付き半導体装置を提供することにある。
【0007】
また、本発明の他の課題は、部材点数の削減となり経済性に優れた保護カバー、保護カバー付き半導体装置を提供することにある。
【0008】
【課題を解決するための手段】
本発明によれば、熱を発生する部品を覆いかつ前記部品を実装する基材に装着して用いる保護カバーにおいて、前記部品及び前記部品を実装する前記基材の少なくとも一方面に対向させる側板部を有し、前記側板部は、前記側板部の外で発生させる気流を前記一方面に対向させる前記側板部の内面へ導く指向板部を有し、該指向板部が前記側板部の外で発生させる前記気流に対峙するよう前記側板部の外面から該外面よりも外に向けて形成されていることを特徴とする保護カバーが得られる。
【0009】
また、本発明によれば、熱を発生する部品が実装されている基材と、前記部品を覆いかつ前記基材に装着した保護カバーとを含む保護カバー付き半導体装置において、前記保護カバーは、前記部品を覆いかつ前記部品を実装した前記基材の少なくとも一方面に対向させる側板部を有し、前記側板部は、前記側板部の外で発生させる気流を前記一方面に対向する前記側板部の内面及び前記基材の前記一方面間へ導く指向板部を有し、該指向板部が前記側板部の外で発生させる前記気流に対峙するよう前記側板部の外面から該外面よりも外に向けて形成されていることを特徴とする保護カバー付き半導体装置が得られる。
【0010】
【作用】
前記側板部の外で発生させる気流は、この気流に対峙する指向板部によって側板部の内面へ導かれる。側板部の内面へ導かれた気流は、部品を冷却した後、側板部の外へ放散される。
【0011】
上流側の指向板部は、側板部の外で発生させる気流を側板部の外から側板部の内面へ流入させるように気流に対峙しており、側板部の窓部から内面へ気流を採り込む。下流側の指向板部は、側板部の内面へ採り込まれた気流を下流側の窓部から下流側の側板部の外へ放散するように前記気流に対峙している。
【0012】
側板部の内面及び基材の前記一方面間に設けた熱伝導性部材は、熱伝導性部材が部品に当接しているので、気流によって熱伝導性部材を冷却するとともに部品を冷却することができる。
【0013】
【発明の実施の形態】
以下、本発明に係る保護カバー、及び保護カバー付き半導体装置の第1実施の形態例を説明する。図1及び図2は、第1実施の形態例における保護カバー付き半導体装置を示している。
【0014】
図1及び図2を参照して、保護カバー付き半導体装置は、複数の部品(以下、電子部品と呼ぶ)11が実装されているプリント配線基板のような平板形状の基材(以下、基板と呼ぶ)13と、熱を発生する電子部品11を覆いかつ基板13に装着されている保護カバー21とを備えている。
【0015】
この実施の形態例における保護カバー付き半導体装置は、基板13の一対の表面の下側に図示していない導電部が設けられており、基板13を機器に搭載されているコネクタに差し込んでコネクタのコンタクトに接続するものである。
【0016】
保護カバー21は、電子部品11を実装する基板13の一方面とこの一方面に平行なもう一方面からなる一対の表面のそれぞれに一対一に対向している一対の側板部23、25と、側板部23、25の上端を基板13の一つの板厚面に平行な方向で相互に接続している天板部27とを有している。
【0017】
さらに、保護カバー21は、基板の一対の表面に対向して下方に延びている側板部23、25の下端から基板13の一対の表面へ先端が突き当たるようにそれぞれ曲げられて延びている一対の支持板部28,29を有している。即ち、保護カバー21は、支持板28,29によって基板13に支持されるよう基板13への装着方向の断面が略コの字形状に曲げることによって形成されており、基板13に着脱可能に装着されている。
【0018】
保護カバー21は、基板13に搭載されている電子部品11を外部からの機械的な衝撃から保護する役目とともに、後述する冷却ファンから生じる気流A(図1及び図2に示した矢印A)を採り込んで電子部品11を冷却した後の気流B(図1及び図2に示した矢印B)を放散する役目を果たす。
【0019】
このように、電子部品11を搭載した基板13は、一対の側板部23、25、天板27、及び一対の支持板28,29によって覆われて装着されることによって、側板部23,25の内面、及び基板13の一対の表面間にそれぞれ空間Sが形成されている。
【0020】
保護カバー付き半導体装置では、側板部23,25の外で発生させた気流Aを側板部23,25の外面から側板部23,25及び基板13間の空間Sへ導き電子部品11を冷却し、側板部23,25の内側から外へ気流Bとして放散する。
【0021】
側板部23,25は、これらの内面及び外面間を開口させた複数の窓部(第1窓部31,第2窓部33)と、窓部(第1窓部31,第2窓部33)の近傍に位置し側板部23,25の外で発生させる気流Aに対峙するように側板部23,25から外方に向けて形成されている複数の指向板部(第1指向板部41,第2指向板部43)とを有している。
【0022】
さらに、側板部23,25には、側板部23,25及び基板13間の空間Sを通過する気流Aの上流側及び下流側間に窓部(第1窓部31,第2窓部33)及び指向板部(第1指向板部41,第2指向板部43)が複数個所に形成されている。
【0023】
この実施の形態例における保護カバー付き半導体装置では、サーバーなどのシステムに組み込まれている冷却ファンから発生させる気流Aを効率良く利用して、この気流Aによって電子部品11から発生する熱を側板部23,25の内面から外へ放散し電子部品11を冷却する。窓部(第1窓部31,第2窓部33)及び指向板部(第1指向板部41,第2指向板部43)は、気流A,Bを所定方向へ流す、いわゆるベンチレーターの役目を果たす。
【0024】
なお、保護カバー21は、薄い金属板に打ち抜き加工を施して窓部(第1窓部31,第2窓部33)及び指向板部41,43の展開形状を形成し、その後に、曲げ加工を施することによって製作される。
【0025】
さらに具体的に説明すると、窓部(第1窓部31,第2窓部33)は、上流側で側板部23,25の外で発生させた気流Aを基板13及び側板部23,25間へ採り込むための第1窓部31と、基板13及び一対の側板部23,25間へ採り込まれた気流Aを下流側にかつ側板部23,25の外へ放散するための第2窓部33とからなる。
【0026】
なお、図2によって明らかなように、この実施の形態例においては、側板部23,25の上流側に2つづつの第1窓部31が形成されている。また、側板部23,25の下流側に2つづつの第2窓部33が形成されている。
【0027】
指向板部(第1指向板部41,第2指向板部43)は、側板部23,25の外で発生させた気流Aを第1窓部31へ流入させるための第1指向板部41と、基板13及び側板部23,25間へ採り込まれた気流Aを下流側へかつ側板部23,25の外へ放散するための第2指向板部43とを有している。
【0028】
第1指向板部41は、第1窓部31の下流側端から第1窓部31上へかつ側板部23,25の外面に対して斜め上方に傾斜するように延びている。第2指向板部43は、第2窓部33の上流側端から第2窓部33上へかつ側板部23,25の外面に対して斜め上方に傾斜するように延びている。
【0029】
第1窓部31及び第1指向板部41、第2窓部33及び第2指向板部43は、これらが一対の側板部23,25の上流側から下流側でほぼ中央部を境にして別れて位置しており、上流側における第1窓部31及び第1指向板部41は、気流Aを側板部23,25及び基板13間の空間Sへ導く。さらに、下流側における第2窓部33及び第2指向板部43は、側板部23,25及び基板13間の空間Sの気流Bを側板部23,25の外へ放散する。
【0030】
冷却ファンから生じる気流Aは、側板部23,25の外から第1指向板部41に干渉し、第1窓部31から採り込まれて電子部品11を冷却した後、第2窓部33から外へ流出し第2指向板部43に干渉させて外へ放散する。よって、第2窓部33から外へ流出した気流Bは、上流側から下流側でほぼ中央部を境にして第2指向板部43と第1指向板部41とが対象に逆向きに配置されているので、上流側へ放散されることがない。
【0031】
なお、上流側及び中間に位置する電子部品11の熱を含む気流Bは、下流側の電子部品11に当たるが、気流Bの風速によって下流側に位置する電子部品11を冷却することができる。
【0032】
図3は、保護カバー付き半導体装置の第2実施の形態例を示している。なお、第2実施の形態例の説明においては、図1及び図2に示した保護カバー付き半導体装置と同じ部分には、同じ符号を付して一部の説明を省略する。
【0033】
図3における保護カバー付き半導体装置は、側板部23,25の外で発生させた気流A(図3に示した矢印A)を側板部23,25及び基板13間の空間Sへ導き電子部品11を冷却し、側板部23,25の外へ気流B(図3に示した矢印B)として放散する。保護カバー121は、側板部23,25の内面及び外面間を開口させた複数の窓部131と、窓部131の近傍に位置して側板部23,25の外で発生させる気流Aに対峙するように側板部23,25から外方に向けて形成した複数の第1指向板部141及び複数の第2指向板部143とを有している。
【0034】
一対の側板部23,25には、側板部23,25及び基板13間の空間Sを通過する気流Aの上流側から下流側へ窓部131及び第1指向板部141,第2指向板部143が複数個所に形成されている。
【0035】
この実施の形態例における保護カバー付き半導体装置では、冷却ファンから生じる気流Aをによって電子部品11を冷却した後、熱を含む気流Bを側板部23,25の下流端B1から外へ放散する。
【0036】
ここで、以下の説明においては、側板部23,25の上流側における一方端を上流端A1と呼び、側板部23,25の下流側におけるもう一方端を下流端B1と呼んで以下の説明をする。
【0037】
さらに具体的に説明すると、窓部131は、側板部23,25の外で発生させた気流Aを側板部23,25の外から側板部23,25の内部へ流入させて基板13及び側板部23,25間へ気流Aを採り込む。そして、基板13及び側板部23,25間へ採り込まれた気流Aは、側板部23,25の下流端B1から外へ放散する。
【0038】
図3によって明らかなように、この実施の形態例においては、窓部131が電子部品11のそれぞれに一対一に対応して位置しているので、電子部品11を気流Aによって直接冷却することが可能となる。
【0039】
第1指向板部141及び第2指向板部143は、上流側で側板部23,25の外で発生させた気流Aを側板部23,25の外から側板部23,25の内部へ流入させて基板13及び側板部23,25間へ気流Aを採り込む。
【0040】
複数の窓部131のそれぞれには、第1及び第2指向板部141,143が1つの窓部131に対して備えられている。第1指向板部141は、窓部131の下流側端から窓部131上へかつ側板部23,25の外面に対して斜め上方に傾斜するように延びている。第2指向板部143は、窓部131の上流側端から側板部23,25上へかつ側板部23,25の外面に対して斜め上方に傾斜するように延びている。したがって、第1指向板部141及び第2指向板部143は、これらが同じ方向へ傾斜している。
【0041】
冷却ファンから生じる気流Aは、側板部23,25の外から1つの窓部131の上流側と下流側で対向している第1及び第2指向板部141,143によって窓部131に採り込まれ、窓部131から流入して電子部品11を冷却した後、側板部23,25の下流端B1から外へ放散する。
【0042】
なお、第2実施の形態例では、窓部131及び第1及び第2指向板部141,143をもつ形態のもので説明したが、第1実施の形態例によって説明した第1及び第2窓部31,33、第1及び第2指向板部41,43をもち、電子部品11上に第1及び第2窓部31,33を位置させる構成であってもよい。
【0043】
図4は、保護カバー付き半導体装置の第3実施の形態例を示している。なお、第3実施の形態例の説明においては、図1及び図2に示した保護カバー付き半導体装置と同じ部分には、同じ符号を付して一部の説明を省略する。
【0044】
図4における保護カバー付き半導体装置では、側板部23,25の外で発生させた気流A(図4に示した矢印A)を側板部23,25及び基板13間の空間Sへ導き電子部品11を冷却し、側板部23,25の外へ気流B(図4に示した矢印B)として放散する第1指向板部241及び第2指向板部243を有している。
【0045】
第1指向板部241は、側板部23,25の上流端A1から外へ延びており、第2指向板部243は、側板部23,25のもう一方端である下流端B1から外へ延びている。また、第1指向板部241は、側板部23,25の上流端A1から外方へかつ斜め上方に傾斜するように延びている。第2指向板部243は、側板部23,25の下流端B1から外方へかつ斜め上方に傾斜するように延びている。
【0046】
この実施の形態例における保護カバー付き半導体装置では、冷却ファンから生じる気流Aを側板部23,25の上流端A1へ採り込み、電子部品11から発生した熱を気流Bとともに側板部23,25の下流端B1から第2指向板部243によって導き外へ放散することによって電子部品11を冷却している。
【0047】
図5は、保護カバー付き半導体装置の第4実施の形態例を示している。なお、図5における保護カバー付き半導体装置では、図1及び図2によって説明した保護カバー21を採用している。
【0048】
保護カバー付き半導体装置は、電子部品11に当接した高熱伝導性ラバーもしくは金属板のような板状の熱伝導性部材51,53を有している。熱伝導性部材51,53は、側板部23,25の内面にそれおれ対向しており、かつ側板部23,25の上流端A1及び下流端B1の近傍にまで延びている。側板部23,25と熱伝導性部材51,53との間には、空間Sとなっている。このように、熱伝導性部材51,53及び側板部23,25間に気流A,Bが通過する空間Sを確保 した構造とすることで冷却および放散効果が得られる。
【0049】
冷却ファンから生じる気流Aは、側板部23,25の外から第1指向板部41に干渉し、第1窓部31から内部へ採り込まれて電子部品11に当接している熱伝導性部材51,53を冷却することによって電子部品11をも冷却した後、熱を含む気流Bを第2指向板部43に干渉させつつ第2窓部33から側板部23,25の外へ放散する。
【0050】
なお、図5によって説明した熱伝導性部材51,53は、図3によって説明した第2実施の形態例における保護カバー付き半導体装置、もしくは図4によって説明した第3実施の形態例におけるおける保護カバー付き半導体装置にも採用することができる。
【0051】
また、第1乃至第3実施の形態例によって説明した保護カバー21は、半導体装置に装着するものに限定されることなく、電子部品の他に、熱を発生する部品に対して外部からの機械的な衝撃から保護し、さらに冷却を必要とするものに対して適用することができることは言うまでもない。
【0052】
さらに、第1乃至第3実施の形態例によって説明した保護カバーは、一対の側板部23,25を備えているが、基板13の一方の表面のみに電子部品11が搭載されている場合は一対の側板部25のうち、一方を省略することも可能である。
【0053】
【発明の効果】
以上、実施の形態例によって説明したように、本発明に係る保護カバー、保護カバー付き半導体装置は、指向板部を備えているので、部品(電子部品)から発生の発熱を効率良く外部へ放散させることができ、熱を発生する部品や半導体装置の温度上昇を低く抑えることができる。
【0054】
また、側板部は、薄い板を打ち抜き加工することにより窓部及び指向板部を形成することができるので、部材点数の削減となり経済性に優れた保護カバー、保護カバー付き半導体装置を提供できる。
【0055】
さらに、窓部及び指向板部によって構成した保護カバーを採用して本発明の保護カバー付き半導体装置を製作したもの、単に側板部のみで構成した保護カバーを採用して半導体装置を製作したものとを比較したところ、本発明の保護カバー付き半導体装置では、単に側板部のみで構成した保護カバーを採用して半導体装置としたものよりも、風速1m/s(秒)で電子部品の発熱におけるピーク温度を4℃低下させることができた。
【図面の簡単な説明】
【図1】本発明に係る保護カバー、及び保護カバー付き半導体装置における第1実施の形態例を示しており、保護カバー付き半導体装置の一部を省略して示した斜視図である。
【図2】図1に示した保護カバー付き半導体装置のII−II線で断面して全体を示した断面図である。
【図3】本発明に係る保護カバー付き半導体装置における第2実施の形態例を示す断面図である。
【図4】本発明に係る保護カバー付き半導体装置における第3実施の形態例を示す断面図である。
【図5】本発明に係る保護カバー付き半導体装置における第4実施の形態例を示す断面図である。
【符号の説明】
11  電子部品(部品)
13  基板(基材)
21  保護カバー
23,25  側板部
31  第1窓部
33  第2窓部
131  窓部
41、141  第1指向板部
43、143  第2指向板部
A,B  気流
A1  上流端
B1  下流端
S  空間
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a protective cover used for dissipating heat generated from a component while protecting components mounted on the substrate, a substrate mounted with a heat-generating component such as an IC memory, a DRAM, and a chip component. The present invention relates to a semiconductor device with a protective cover having a protective cover.
[0002]
[Prior art]
In recent years, the speed and capacity of semiconductor memory devices such as DRAMs have been rapidly increased, and the amount of heat generated tends to increase as the memory devices become more highly integrated. In addition, while miniaturization is required for a semiconductor device that houses electronic components such as a semiconductor memory element, an IC or the like for correcting a time delay of a signal due to an increase in the speed of a single DRAM may be mounted. Many electronic components such as ICs and chip components are mounted in addition to semiconductor memory elements, and the number of components mounted on a semiconductor device tends to increase.
[0003]
The semiconductor device is provided with a protective cover. The protective cover prevents heat generated from the plurality of electronic components from being dissipated, and becomes higher in temperature than the semiconductor device. Further, an increase in the amount of heat generated due to recent high-speed operation causes a malfunction of the semiconductor device, which is a serious problem.
[0004]
In order to solve such a problem, it has been proposed to cool electronic components. For example, Japanese Patent Application Laid-Open No. H11-354701 discloses a heat radiator and a memory module equipped with the heat radiator. This memory module has a U-shaped cross section in the mounting direction on the board on which the memory IC and the like are mounted, and the U-shaped inner surface is formed of a high heat conductive member such as high heat conductive rubber. And a cover-shaped heat sink provided with a large number of irregularities on the outer surface of a U-shape.
[0005]
[Problems to be solved by the invention]
However, in a conventional memory module, a cover-shaped heat sink having a large U-shaped outer surface provided with a large number of irregularities is attached to the memory IC through a high thermal conductive member, so that the number of parts is reduced. However, there is a problem that the number of components increases and the assembly becomes complicated.
[0006]
Therefore, an object of the present invention is to efficiently dissipate the heat generated from components to the outside, to generate heat with a simple configuration, and to reduce the temperature rise of components, and a protective cover, and It is to provide a semiconductor device with a protective cover.
[0007]
Another object of the present invention is to provide a protective cover and a semiconductor device with a protective cover which are reduced in the number of members and are economical.
[0008]
[Means for Solving the Problems]
According to the present invention, in a protective cover used to cover a component generating heat and to be mounted on a substrate on which the component is mounted, a side plate portion facing at least one surface of the component and the substrate on which the component is mounted The side plate portion has a directional plate portion that guides an airflow generated outside the side plate portion to an inner surface of the side plate portion facing the one surface, and the directional plate portion is provided outside the side plate portion. A protective cover is obtained, wherein the protective cover is formed so as to face the generated airflow from the outer surface of the side plate portion to the outside of the outer surface.
[0009]
Further, according to the present invention, in a semiconductor device with a protective cover including a substrate on which a component generating heat is mounted, and a protective cover covering the component and mounted on the substrate, the protective cover includes: A side plate portion that covers the component and faces at least one surface of the substrate on which the component is mounted, wherein the side plate portion is configured to face an airflow generated outside the side plate portion to the one surface. A directional plate portion that guides between the inner surface of the base material and the one surface of the base material, and the directional plate portion is positioned outside the outer surface of the side plate portion so as to face the airflow generated outside the side plate portion. , A semiconductor device with a protective cover is obtained.
[0010]
[Action]
The airflow generated outside the side plate is guided to the inner surface of the side plate by the directional plate facing the airflow. The airflow guided to the inner surface of the side plate portion is radiated outside the side plate portion after cooling the components.
[0011]
The upstream directional plate portion faces the airflow so that the airflow generated outside the side plate portion flows from outside the side plate portion to the inner surface of the side plate portion, and takes in the airflow from the window portion of the side plate portion to the inner surface. . The downstream directional plate faces the airflow such that the airflow taken into the inner surface of the side plate is radiated from the downstream window to the outside of the downstream side plate.
[0012]
The heat conductive member provided between the inner surface of the side plate portion and the one surface of the base material, because the heat conductive member is in contact with the component, it is possible to cool the heat conductive member by airflow and cool the component. it can.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a first embodiment of a protective cover and a semiconductor device with a protective cover according to the present invention will be described. 1 and 2 show a semiconductor device with a protective cover according to the first embodiment.
[0014]
Referring to FIGS. 1 and 2, a semiconductor device with a protective cover has a flat substrate (hereinafter, referred to as a substrate) such as a printed wiring board on which a plurality of components (hereinafter, referred to as electronic components) 11 are mounted. 13) and a protective cover 21 that covers the electronic component 11 that generates heat and is mounted on the substrate 13.
[0015]
The semiconductor device with a protective cover according to this embodiment is provided with a conductive portion (not shown) below a pair of surfaces of the substrate 13, and inserts the substrate 13 into a connector mounted on a device to form a connector. It connects to a contact.
[0016]
The protective cover 21 includes a pair of side plate portions 23 and 25 that face each other on a pair of surfaces each including one surface of the substrate 13 on which the electronic component 11 is mounted and the other surface parallel to the one surface, A top plate 27 connects the upper ends of the side plates 23 and 25 to each other in a direction parallel to one plate thickness surface of the substrate 13.
[0017]
Further, the protective cover 21 is bent to extend from the lower ends of the side plate portions 23 and 25 facing the pair of surfaces of the substrate to the pair of surfaces of the substrate 13. Support plates 28 and 29 are provided. That is, the protective cover 21 is formed by bending the cross section in the mounting direction of the substrate 13 into a substantially U-shape so as to be supported by the substrate 13 by the support plates 28 and 29, and is detachably mounted on the substrate 13. Have been.
[0018]
The protective cover 21 serves to protect the electronic components 11 mounted on the substrate 13 from external mechanical shocks, and also serves to prevent airflow A (arrows A shown in FIGS. 1 and 2) generated from a cooling fan described later. It plays the role of dissipating the airflow B (arrow B shown in FIGS. 1 and 2) after taking in and cooling the electronic component 11.
[0019]
As described above, the board 13 on which the electronic component 11 is mounted is covered and mounted by the pair of side plates 23 and 25, the top plate 27, and the pair of support plates 28 and 29, so that Spaces S are respectively formed between the inner surface and the pair of surfaces of the substrate 13.
[0020]
In the semiconductor device with the protective cover, the air current A generated outside the side plate portions 23, 25 is guided from the outer surface of the side plate portions 23, 25 to the space S between the side plate portions 23, 25 and the substrate 13, and the electronic component 11 is cooled. The air is radiated from the inside of the side plate portions 23 and 25 as airflow B to the outside.
[0021]
The side plates 23 and 25 include a plurality of windows (a first window 31 and a second window 33) having an opening between the inner surface and the outer surface thereof, and a window (the first window 31 and the second window 33). ), A plurality of directional plates (first directional plates 41) formed outward from the side plates 23, 25 so as to face the airflow A generated outside the side plates 23, 25. , The second directional plate portion 43).
[0022]
Further, the side plate portions 23 and 25 have windows (first window portion 31 and second window portion 33) between the upstream side and the downstream side of the airflow A passing through the space S between the side plate portions 23 and 25 and the substrate 13. In addition, the directional plate portions (the first directional plate portion 41 and the second directional plate portion 43) are formed at a plurality of locations.
[0023]
In the semiconductor device with a protective cover according to this embodiment, the airflow A generated from a cooling fan incorporated in a system such as a server is efficiently used, and the heat generated from the electronic component 11 by the airflow A is transferred to the side plate portion. The electronic components 11 are cooled by being radiated from the inner surfaces of the components 23 and 25 to the outside. The windows (the first window 31 and the second window 33) and the directional plates (the first directional plate 41 and the second directional plate 43) serve as so-called ventilators that flow the airflows A and B in predetermined directions. Fulfill.
[0024]
The protective cover 21 is formed by punching a thin metal plate to form the expanded shape of the windows (the first window 31 and the second window 33) and the directional plates 41 and 43, and thereafter, is bent. It is produced by applying
[0025]
More specifically, the windows (the first window 31 and the second window 33) transmit the airflow A generated outside the side plates 23 and 25 on the upstream side between the substrate 13 and the side plates 23 and 25. And a second window for dissipating the airflow A taken between the substrate 13 and the pair of side plates 23, 25 downstream and outside the side plates 23, 25. And a unit 33.
[0026]
As is clear from FIG. 2, in this embodiment, two first windows 31 are formed on the upstream side of the side plates 23 and 25, respectively. Further, two second windows 33 are formed downstream of the side plates 23 and 25.
[0027]
The directional plate portions (the first directional plate portion 41 and the second directional plate portion 43) are provided with the first directional plate portion 41 for allowing the airflow A generated outside the side plate portions 23 and 25 to flow into the first window portion 31. And a second directional plate portion 43 for dissipating the air flow A taken between the substrate 13 and the side plate portions 23 and 25 to the downstream side and outside the side plate portions 23 and 25.
[0028]
The first directional plate portion 41 extends from the downstream end of the first window portion 31 onto the first window portion 31 and inclines obliquely upward with respect to the outer surfaces of the side plate portions 23 and 25. The second directional plate portion 43 extends from the upstream end of the second window portion 33 onto the second window portion 33 and inclines obliquely upward with respect to the outer surfaces of the side plate portions 23 and 25.
[0029]
The first window portion 31 and the first directional plate portion 41, and the second window portion 33 and the second directional plate portion 43 are substantially separated from the upstream side and the downstream side of the pair of side plate portions 23 and 25 from the center. The first window portion 31 and the first directional plate portion 41 on the upstream side guide the airflow A to the space S between the side plate portions 23 and 25 and the substrate 13. Further, the second window 33 and the second directional plate 43 on the downstream side dissipate the airflow B in the space S between the side plates 23, 25 and the substrate 13 to the outside of the side plates 23, 25.
[0030]
The airflow A generated from the cooling fan interferes with the first directional plate portion 41 from outside the side plate portions 23 and 25, is taken in from the first window portion 31, cools the electronic component 11, and then flows from the second window portion 33. It flows out and interferes with the second directional plate portion 43 and radiates outside. Therefore, the airflow B flowing out from the second window portion 33 is arranged such that the second directional plate portion 43 and the first directional plate portion 41 are arranged opposite to each other from the upstream side to the downstream side with the boundary substantially at the center. It is not radiated to the upstream side.
[0031]
The airflow B containing heat of the electronic components 11 located on the upstream side and the middle part hits the electronic components 11 on the downstream side. However, the electronic components 11 located on the downstream side can be cooled by the wind speed of the airflow B.
[0032]
FIG. 3 shows a second embodiment of the semiconductor device with a protective cover. In the description of the second embodiment, the same parts as those of the semiconductor device with a protective cover shown in FIGS. 1 and 2 are denoted by the same reference numerals, and a part of the description is omitted.
[0033]
The semiconductor device with a protective cover in FIG. 3 guides an air flow A (arrow A shown in FIG. 3) generated outside the side plate portions 23 and 25 to a space S between the side plate portions 23 and 25 and the substrate 13 so that the electronic component 11 Is cooled and dissipated outside the side plates 23 and 25 as an airflow B (arrow B shown in FIG. 3). The protective cover 121 opposes a plurality of windows 131 having openings between the inner and outer surfaces of the side plates 23 and 25, and an air flow A generated near the windows 131 and generated outside the side plates 23 and 25. A plurality of first directional plate portions 141 and a plurality of second directional plate portions 143 formed outward from the side plate portions 23 and 25 as described above.
[0034]
The pair of side plate portions 23 and 25 have a window 131 and a first directional plate portion 141 and a second directional plate portion from the upstream side to the downstream side of the airflow A passing through the space S between the side plate portions 23 and 25 and the substrate 13. 143 are formed at a plurality of locations.
[0035]
In the semiconductor device with the protective cover according to the present embodiment, the electronic component 11 is cooled by the airflow A generated from the cooling fan, and then the airflow B including heat is radiated outside from the downstream ends B1 of the side plates 23 and 25.
[0036]
Here, in the following description, one end on the upstream side of the side plate portions 23 and 25 is referred to as an upstream end A1, and the other end on the downstream side of the side plate portions 23 and 25 is referred to as a downstream end B1. I do.
[0037]
More specifically, the window portion 131 allows the airflow A generated outside the side plate portions 23 and 25 to flow into the side plate portions 23 and 25 from outside the side plate portions 23 and 25 so that the substrate 13 and the side plate portions The airflow A is taken in between 23 and 25. Then, the airflow A taken between the substrate 13 and the side plates 23 and 25 is radiated outside from the downstream ends B1 of the side plates 23 and 25.
[0038]
As is apparent from FIG. 3, in this embodiment, since the window portions 131 are located in one-to-one correspondence with the electronic components 11, the electronic components 11 can be directly cooled by the airflow A. It becomes possible.
[0039]
The first directional plate portion 141 and the second directional plate portion 143 allow the airflow A generated on the upstream side outside the side plate portions 23 and 25 to flow into the side plate portions 23 and 25 from outside the side plate portions 23 and 25. The airflow A is introduced between the substrate 13 and the side plates 23 and 25.
[0040]
In each of the plurality of windows 131, first and second directional plates 141 and 143 are provided for one window 131. The first directional plate portion 141 extends from the downstream end of the window portion 131 onto the window portion 131 and inclines obliquely upward with respect to the outer surfaces of the side plate portions 23 and 25. The second directional plate portion 143 extends from the upstream end of the window portion 131 onto the side plate portions 23 and 25 and inclines obliquely upward with respect to the outer surfaces of the side plate portions 23 and 25. Therefore, the first directional plate portion 141 and the second directional plate portion 143 are inclined in the same direction.
[0041]
The airflow A generated from the cooling fan is taken into the window 131 from the outside of the side plates 23 and 25 by the first and second directional plates 141 and 143 facing the upstream and downstream of one window 131. In rare cases, after flowing through the window 131 and cooling the electronic component 11, the electronic component 11 is radiated outside from the downstream ends B1 of the side plates 23 and 25.
[0042]
Although the second embodiment has been described as having the window 131 and the first and second directional plates 141 and 143, the first and second windows described in the first embodiment have been described. The first and second window parts 31 and 33 may be located on the electronic component 11 with the parts 31 and 33 and the first and second directional plate parts 41 and 43.
[0043]
FIG. 4 shows a semiconductor device with a protective cover according to a third embodiment. In the description of the third embodiment, the same parts as those of the semiconductor device with a protective cover shown in FIGS. 1 and 2 are denoted by the same reference numerals, and a part of the description is omitted.
[0044]
In the semiconductor device with a protective cover in FIG. 4, an air current A (arrow A shown in FIG. 4) generated outside the side plate portions 23, 25 is guided to a space S between the side plate portions 23, 25 and the substrate 13. And a first directional plate portion 241 and a second directional plate portion 243 which are radiated outside the side plate portions 23 and 25 as an airflow B (arrow B shown in FIG. 4).
[0045]
The first directional plate portion 241 extends outward from the upstream end A1 of the side plate portions 23, 25, and the second directional plate portion 243 extends outward from the downstream end B1, which is the other end of the side plate portions 23, 25. ing. The first directing plate portion 241 extends from the upstream end A1 of the side plate portions 23 and 25 so as to be inclined outward and obliquely upward. The second directional plate portion 243 extends from the downstream end B1 of the side plate portions 23 and 25 so as to be inclined outward and obliquely upward.
[0046]
In the semiconductor device with a protective cover according to this embodiment, the airflow A generated from the cooling fan is taken into the upstream end A1 of the side plate portions 23, 25, and the heat generated from the electronic component 11 is taken together with the airflow B into the side plate portions 23, 25. The electronic component 11 is cooled by being guided from the downstream end B <b> 1 to the outside by the second directional plate portion 243.
[0047]
FIG. 5 shows a semiconductor device with a protective cover according to a fourth embodiment. The semiconductor device with a protective cover in FIG. 5 employs the protective cover 21 described with reference to FIGS.
[0048]
The semiconductor device with a protective cover has plate-shaped heat conductive members 51 and 53 such as a high heat conductive rubber or a metal plate that is in contact with the electronic component 11. The heat conductive members 51 and 53 face the inner surfaces of the side plate portions 23 and 25, respectively, and extend to the vicinity of the upstream end A1 and the downstream end B1 of the side plate portions 23 and 25. A space S is provided between the side plates 23 and 25 and the heat conductive members 51 and 53. As described above, by providing a structure in which the space S through which the air currents A and B pass is secured between the heat conductive members 51 and 53 and the side plate portions 23 and 25, a cooling and radiation effect can be obtained.
[0049]
The airflow A generated from the cooling fan interferes with the first directional plate portion 41 from outside the side plate portions 23 and 25, is taken in from the first window portion 31, and is in contact with the electronic component 11. After the electronic components 11 are also cooled by cooling the 51 and 53, the airflow B including heat is radiated from the second window 33 to the outside of the side plates 23 and 25 while causing the airflow B including heat to interfere with the second directional plate 43.
[0050]
The heat conductive members 51 and 53 described with reference to FIG. 5 are the semiconductor device with the protective cover according to the second embodiment described with reference to FIG. 3 or the protective cover according to the third embodiment described with reference to FIG. The present invention can also be applied to a semiconductor device provided with.
[0051]
Further, the protective cover 21 described in the first to third embodiments is not limited to the one that is mounted on the semiconductor device. It is needless to say that the present invention can be applied to a device which needs to be protected from a physical shock and further requires cooling.
[0052]
Furthermore, the protective cover described in the first to third embodiments includes a pair of side plate portions 23 and 25. However, when the electronic component 11 is mounted on only one surface of the One of the side plate portions 25 may be omitted.
[0053]
【The invention's effect】
As described above with reference to the embodiments, the protective cover and the semiconductor device with the protective cover according to the present invention include the directional plate portion, so that the heat generated from the components (electronic components) is efficiently radiated to the outside. The temperature rise of components or semiconductor devices that generate heat can be suppressed low.
[0054]
In addition, since the side plate portion can form the window portion and the directional plate portion by punching a thin plate, the number of members can be reduced, and a protective cover and a semiconductor device with a protective cover excellent in economic efficiency can be provided.
[0055]
Further, a semiconductor device with a protective cover of the present invention manufactured by employing a protective cover constituted by a window portion and a directional plate portion, and a semiconductor device manufactured by employing a protective cover constituted solely by a side plate portion. When the semiconductor device with the protective cover of the present invention was compared, the peak in the heat generation of the electronic component at a wind speed of 1 m / s (sec) was higher than that of the semiconductor device using the protective cover constituted only by the side plate. The temperature could be reduced by 4 ° C.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a first embodiment of a protective cover and a semiconductor device with a protective cover according to the present invention, in which a part of the semiconductor device with a protective cover is omitted.
FIG. 2 is a cross-sectional view of the entire semiconductor device with a protective cover shown in FIG. 1 taken along line II-II.
FIG. 3 is a sectional view showing a second embodiment of the semiconductor device with a protective cover according to the present invention.
FIG. 4 is a cross-sectional view illustrating a semiconductor device with a protective cover according to a third embodiment of the present invention.
FIG. 5 is a sectional view showing a fourth embodiment of a semiconductor device with a protective cover according to the present invention.
[Explanation of symbols]
11 Electronic parts (parts)
13 Substrate (base material)
21 Protective covers 23, 25 Side plate 31 First window 33 Second window 131 Window 41, 141 First directional plate 43, 143 Second directional plate A, B Airflow A1 Upstream end B1 Downstream end S Space

Claims (12)

熱を発生する部品を覆いかつ前記部品を実装する基材に装着して用いる保護カバーにおいて、前記部品及び前記部品を実装する前記基材の少なくとも一方面に対向させる側板部を有し、前記側板部は、前記側板部の外で発生させる気流を前記一方面に対向させる前記側板部の内面へ導く指向板部を有し、該指向板部が前記側板部の外で発生させる前記気流に対峙するよう前記側板部の外面から該外面よりも外に向けて形成されていることを特徴とする保護カバー。In a protective cover for covering a component generating heat and being mounted on a base material on which the component is mounted, the protective cover includes a side plate portion facing at least one surface of the component and the base material on which the component is mounted, The portion has a directional plate portion that guides an airflow generated outside the side plate portion to an inner surface of the side plate portion facing the one surface, and the directional plate portion faces the airflow generated outside the side plate portion. A protective cover formed from an outer surface of the side plate portion to an outer side of the outer surface. 請求項1記載の保護カバーにおいて、前記指向板部は、前記気流の上流側に位置する前記側板部の一方端で前記側板部の外で発生させる前記気流に対峙して前記気流を前記内面へ導くよう前記一方端から前記側板部の外に向けて延在していることを特徴とする保護カバー。2. The protective cover according to claim 1, wherein the directional plate portion faces the airflow generated outside the side plate portion at one end of the side plate portion located on the upstream side of the airflow, and directs the airflow to the inner surface. 3. A protective cover extending from the one end to the outside of the side plate portion for guiding. 請求項1記載の保護カバーにおいて、前記側板部は、前記内面及び前記外面間を開口させた窓部を有し、前記指向板部は、前記側板部の外で発生させる前記気流に対峙して前記窓部へ採り込むよう前記窓部の近傍に位置していることを特徴とする保護カバー。2. The protective cover according to claim 1, wherein the side plate has a window opening between the inner surface and the outer surface, and the directional plate faces the airflow generated outside the side plate. 3. A protective cover, which is located near the window so as to be taken into the window. 請求項3記載の保護カバーにおいて、前記側板部には、前記内面を通過する前記気流の上流側及び下流側間で前記窓部及び前記指向板部が複数個所に形成されていることを特徴とする保護カバー。4. The protective cover according to claim 3, wherein the window portion and the directional plate portion are formed at a plurality of locations on the side plate portion between an upstream side and a downstream side of the airflow passing through the inner surface. 5. Protective cover. 請求項4記載の保護カバーにおいて、前記上流側の前記指向板部が前記側板部の外で発生させる前記気流に対峙して前記窓部へ採り込むよう前記窓部の近傍に位置しており、前記下流側の前記指向板部が前記側板部の前記内面へ採り込まれた前記気流を前記下流側の前記窓部から前記側板部の外で前記下流側へ放散するよう前記下流側の前記窓部のの近傍に位置していることを特徴とする保護カバー。The protective cover according to claim 4, wherein the directional plate on the upstream side is located near the window so as to be taken into the window in opposition to the airflow generated outside the side plate, The downstream window so that the downstream directional plate portion disperses the airflow taken into the inner surface of the side plate portion from the downstream window portion to the downstream outside the side plate portion. A protective cover characterized by being located in the vicinity of the part. 熱を発生する部品が実装されている基材と、前記部品を覆いかつ前記基材に装着した保護カバーとを含む保護カバー付き半導体装置において、前記保護カバーは、前記部品を覆いかつ前記部品を実装した前記基材の少なくとも一方面に対向させる側板部を有し、前記側板部は、前記側板部の外で発生させる気流を前記一方面に対向する前記側板部の内面及び前記基材の前記一方面間へ導く指向板部を有し、該指向板部が前記側板部の外で発生させる前記気流に対峙するよう前記側板部の外面から該外面よりも外に向けて形成されていることを特徴とする保護カバー付き半導体装置。In a semiconductor device with a protective cover including a substrate on which a component that generates heat is mounted, and a protective cover covering the component and mounted on the substrate, the protective cover covers the component and removes the component. It has a side plate portion facing at least one surface of the mounted base material, and the side plate portion has an inner surface of the side plate portion facing the one surface and an airflow generated outside the side plate portion and the base material. A directional plate portion that guides between the surfaces, and the directional plate portion is formed outwardly from the outer surface of the side plate portion so as to face the airflow generated outside the side plate portion. A semiconductor device with a protective cover, characterized in that: 請求項6記載の保護カバー付き半導体装置において、前記指向板部は、前記気流の上流側に位置する前記側板部の一方端で前記側板部の外で発生させる前記気流に対峙して前記気流を前記内面へ導くよう前記一方端から前記側板部の外に向けて延在していることを特徴とすることを特徴とする保護カバー付き半導体装置。7. The semiconductor device with a protective cover according to claim 6, wherein the directional plate portion faces the airflow generated outside the side plate portion at one end of the side plate portion located on an upstream side of the airflow, and directs the airflow. A semiconductor device with a protective cover, wherein the semiconductor device extends from the one end to the outside of the side plate portion so as to be guided to the inner surface. 請求項6記載の保護カバー付き半導体装置において、前記側板部は、前記内面及び前記外面間を開口させた窓部を有し、前記指向板部は、前記側板部の外で発生させる前記気流に対峙して前記窓部へ採り込むよう前記窓部の近傍に位置していることを特徴とする保護カバー付き半導体装置。7. The semiconductor device with a protective cover according to claim 6, wherein the side plate portion has a window opening between the inner surface and the outer surface, and the directional plate portion is configured to prevent the airflow generated outside the side plate portion. 8. A semiconductor device with a protective cover, wherein the semiconductor device is located near the window so as to face the window. 請求項8記載の保護カバー付き半導体装置において、前記側板部には、前記内面を通過する前記気流の上流側及び下流側間で前記窓部及び前記指向板部が複数個所に形成されていることを特徴とする保護カバー付き半導体装置。9. The semiconductor device with a protective cover according to claim 8, wherein the side plate portion is provided with a plurality of the windows and the directional plate portions between an upstream side and a downstream side of the airflow passing through the inner surface. A semiconductor device with a protective cover, characterized in that: 請求項9記載の保護カバー付き半導体装置において、前記窓部が前記部品上で前記部品に対向していることを特徴とする保護カバー付き半導体装置。10. The semiconductor device with a protective cover according to claim 9, wherein said window portion faces said component on said component. 請求項9又は10記載の保護カバー付き半導体装置において、前記上流側の前記指向板部が前記側板部の外で発生させる前記気流に対峙して前記窓部へ採り込むよう前記窓部の近傍に位置しており、前記下流側の前記指向板部が前記側板部の前記内面へ採り込まれた前記気流を前記下流側の前記窓部から前記側板部の外で前記下流側へ放散するよう前記下流側の前記窓部のの近傍に位置していることを特徴とする保護カバー付き半導体装置。The semiconductor device with a protective cover according to claim 9, wherein the upstream directional plate portion is near the window portion so as to be taken into the window portion in opposition to the airflow generated outside the side plate portion. Is positioned so that the directional plate portion on the downstream side dissipates the airflow taken into the inner surface of the side plate portion from the window portion on the downstream side to the downstream side outside the side plate portion. A semiconductor device with a protective cover, which is located near the window on the downstream side. 請求項7乃至11のいずれか1項に記載の保護カバー付き半導体装置において、前記側板部の内面及び前記基材の前記一方面間に設けた板状の熱伝導性部材を有し、前記熱伝導性部材が前記部品に当接していることを特徴とする保護カバー付き半導体装置。The semiconductor device with a protective cover according to any one of claims 7 to 11, further comprising a plate-shaped heat conductive member provided between an inner surface of the side plate portion and the one surface of the substrate. A semiconductor device with a protective cover, wherein a conductive member is in contact with the component.
JP2002224615A 2002-08-01 2002-08-01 Protective cover and semiconductor device therewith Withdrawn JP2004071615A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009512218A (en) * 2005-10-14 2009-03-19 ジーイー・アビエイション・システムズ・エルエルシー Cross-flow surplus air cooling method for highly reliable electronic equipment
JP2009238786A (en) * 2008-03-25 2009-10-15 Seiko Epson Corp Electronic circuit module and projector
DE102011015547B3 (en) * 2011-03-30 2012-06-21 Fujitsu Technology Solutions Intellectual Property Gmbh Air guide for electrical components arranged on printed circuit board of memory modules of computer server, has roof that is formed with one flap by bending portion of roof along bending edge in direction of proposed placement site
GB2503407A (en) * 2011-10-10 2014-01-01 Control Tech Ltd Electronic Circuit Cover and Airflow Guide
GB2531217B (en) * 2013-08-01 2020-04-08 Snecma Ventilation of a piece of equipment of a turbomachine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009512218A (en) * 2005-10-14 2009-03-19 ジーイー・アビエイション・システムズ・エルエルシー Cross-flow surplus air cooling method for highly reliable electronic equipment
JP2009238786A (en) * 2008-03-25 2009-10-15 Seiko Epson Corp Electronic circuit module and projector
DE102011015547B3 (en) * 2011-03-30 2012-06-21 Fujitsu Technology Solutions Intellectual Property Gmbh Air guide for electrical components arranged on printed circuit board of memory modules of computer server, has roof that is formed with one flap by bending portion of roof along bending edge in direction of proposed placement site
GB2503407A (en) * 2011-10-10 2014-01-01 Control Tech Ltd Electronic Circuit Cover and Airflow Guide
US9036350B2 (en) 2011-10-10 2015-05-19 Control Techniques Ltd Barrier device
GB2503407B (en) * 2011-10-10 2015-12-09 Control Tech Ltd Barrier device
GB2531217B (en) * 2013-08-01 2020-04-08 Snecma Ventilation of a piece of equipment of a turbomachine

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