WO1996042044A1 - Structure mecanique d'un appareil pour le traitement d'informations - Google Patents
Structure mecanique d'un appareil pour le traitement d'informations Download PDFInfo
- Publication number
- WO1996042044A1 WO1996042044A1 PCT/JP1995/001161 JP9501161W WO9642044A1 WO 1996042044 A1 WO1996042044 A1 WO 1996042044A1 JP 9501161 W JP9501161 W JP 9501161W WO 9642044 A1 WO9642044 A1 WO 9642044A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mechanical structure
- information processing
- cpu
- processing device
- chip
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/203—Cooling means for portable computers, e.g. for laptops
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/20—Indexing scheme relating to G06F1/20
- G06F2200/201—Cooling arrangements using cooling fluid
Definitions
- the present invention relates to a mechanical structure of an information processing device such as a notebook computer, a laptop, a convenience store, and the like, in which a large number of electric circuits are stored in a small space. More particularly, it relates to a mechanical structure around a heat-generating component in such an information processing device. More specifically, the present invention relates to a mechanical structure that can suitably realize both cooling of the heat-generating component in the information processing device and removal of the heat-generating component (replacement with another component).
- FIG. 4 shows the external structure of a notebook computer (hereinafter, simply referred to as "PCj" or "system j") 100. This figure is shown in Japanese Patent Application No. 06-30003 (assigned to the present applicant).
- the PC 100 is composed of a thin main body 110 and a lid 120 provided to be openable and closable with respect to the main body 110.
- the lid 120 has a shallow upper casing 121.
- a pair of substantially cylindrical projections 122 are formed at the lower edge of the upper casing 121.
- the lid 120 is hingedly connected to the main body 110 by rotatably supporting the pair of protrusions 122 on the main body 110.
- a liquid crystal display (LCD) 123 as a display means of the PC 100 is buried in a substantially central portion on the open side of the upper casing 121 (that is, on the back side of the lid 120).
- the opening and closing operation of the lid body 120 with respect to the main body 110 is performed by sliding the opening and closing operation part 124 provided at substantially the front part of each of the left and right side surfaces of the upper casing 121 in the front-rear direction.
- the main body 110 includes a shallow bottom lower casing 111.
- the lower casing 1 11 is provided with a support plate 1 12 of a predetermined size for covering the rear part of the upper opening.
- a support plate 1 12 of a predetermined size for covering the rear part of the upper opening.
- a keyboard Trackpoint 113 (“TrakPoInt” is a trademark of IBM in the United States) is provided as an input means of the PC 100.
- a pair of speakers 114 for audio output is buried in both left and right corners on the front side of the keypad 113.
- a pair of tongue-shaped protrusions 115 are formed at the rear edge of the keyboard 113, and the pair of protrusions are formed.
- the keyboard 1 13 is hinged to the support plate 1 12 so as to be openable and closable by the support plate 1 12 being pivotally supported by the front edge of the support plate 1 12.
- the bottom of the lower casing 1 1 1 hinge part has the remaining battery capacity, the usage status of the PC drive, the usage status of the floppy 'disk' drive (FDD), the hard disk drive (
- FIG. 5 shows a state in which the lid 120 and the keyboard 113 of the PC 100 are opened, and the internal structure of the main body 100 is exposed.
- a partition for separating a front chamber and a rear chamber is provided in a lower casing 1 1 1.
- the 1 16 is formed by bending a thin metal plate into a predetermined shape. You. In the rear room covered by the support plate 1 12 and the partition 1 16, there are CPU (Central Processing Unit), system memory, memory-controller, ROM, video controller, audio controller, etc. A system board (not shown) with such main electrical components mounted on the surface is housed. This rear room is relatively narrow, and therefore, the mounting density of electric components in the room is very high. In the front room before the partition 116, human output devices such as an HDD pack 117 and a CD-ROM drive 118 and a battery pack 119 can be removed (remove purple). It is attached to. HDD pack 117, CD-ROM drive 1 1
- Corresponding connectors are provided for mechanically and electrically connecting the terminals of the battery pack and the battery pack.
- recent personal computers' performance keys and zips are remarkable. This is largely due to the speedup of the CPU, which is a wonder of PCs.
- high-speed operation has the disadvantage of increasing the amount of heat generated inside the computer. This is because the current passing through the transistors inside the chip increases as the operating frequency increases, and the power consumption inevitably increases.
- Many of the CPUs currently being developed and manufactured use CMOS technology, and their power consumption is much lower than that of bipolar semiconductors represented by TTL.
- the MOS transistor also contains a specific capacitance component in each gate, an increase in the amount of heat generated cannot be avoided as the operating frequency increases.
- CPUs with an operating frequency of around 100 MHz such as Pentium, which is sold by Inte, a U.S.A. company, generate significant heat.
- Pentium which is sold by Inte, a U.S.A. company
- Some PCs run away due to their own heat and eventually break down, especially in the case of the notebook-sized PC mentioned above, where the mounting density of internal electronic components is extremely high, The problem of heat generation is more serious because there are few escape areas.For desktop PCs, forced cooling using cooling fans and cooling fins is possible, but for notebook PCs, there is almost no space for mounting these.
- heat pipes that have a heat transfer function are brought into contact with heat-generating electrical components such as CPUs, video-controller chips, system memory, and coprocessors.
- a cooling channel is provided, or a heat sink (a metal housing may also serve as a heat sink) made of a material with excellent heat conductivity (for example, copper or aluminum) and formed over a large surface area is brought into contact with the heat sink.
- a heat sink a metal housing may also serve as a heat sink
- the volume and fan height are required compared to forced cooling using a cooling fan. It does not hinder the miniaturization of PCs, but the circuit board, electronic components, and heat pipes are joined together in a relatively complicated laminated structure.
- Fig. 6 shows the cooling structure (conventional example) used in a notebook computer.
- a heat-generating component such as a CPU chip is mounted on a system port so as to face a housing (for example, a lower casing 111).
- the housing is made of a good heat transfer material such as a magnesium alloy.
- An elastic body having a relatively high heat conductivity eg, silicon rubber
- Lower casing 1 1 1 is an example For example, it is a component with a relatively large surface area that is integrally formed by, for example, fabrication, and also acts as a heat sink.
- the CPU chip emits the most heat from its upper surface, but by adopting such a configuration, heat can be effectively dissipated through the silicon rubber and the lower casing 111. It is a translation.
- the demand for personal 'computer performance' apps has been realized in many different forms.
- Some modern PCs have other CPUs that are pin compatible with the standard ones (generally faster new version CPUs, such as the Power PC 603 versus the Power PC 603).
- An object of the present invention is to provide an excellent machine for an information processing device in which a large number of electric circuits are housed in a small space, such as a notebook computer, a jig, a jib computer, etc. To provide a strategic structure.
- a further object of the present invention is to provide an excellent mechanical structure around a heat-generating component in such an information processing device.
- a further object of the present invention is to provide a mechanical structure capable of suitably realizing both the cooling effect of the heat-generating component in the information processing device and the removal (replacement with another component) of the heat-generating component. It is in.
- the present invention has been made in view of the above problems, and a first aspect of the present invention is directed to a mechanical structure of an information processing device including one or more electric components, the inside of which is covered by a housing, The housing is provided with an opening for exchanging internal electric parts, and a lid which is fitted into the exchange opening and comes into contact with the electric part to be exchanged. This is the mechanical structure of the processing equipment.
- the electric component to be replaced is, for example, a CPU chip or a CPU card on which the CPU chip is mounted.
- a mechanical structure of an information processing device including a system board on which one or more electric components are mounted, and the inside of which is covered by a housing.
- a replacement port is drilled at a position facing the replacement part on the board, and a lid for closing the replacement port is provided.
- the lid is mounted in the following order: lid-replacement part ⁇ heat dissipation member ⁇ system board It is a mechanical structure of an information processing device characterized by being overlapped.
- a third aspect of the present invention is a system in which a CPU chip is mounted and wiring is printed ⁇ In a CP recard connected to a board, an opening is formed in a substantially central portion, This is a CPU card characterized in that a connector for connecting to a CPU and a CPU chip are mounted on the same surface.
- the replacement part in the second aspect may be this CPU card.
- a flat projection for projecting through the opening of the CPU card and abutting on the lower surface side of the CPU chip is protruded from the lid, heat radiation from the lid can be promoted.
- a mechanical structure of an information processing device such as a notebook computer or a laptop computer in which a large number of electric circuits are integrated in a small space. It is possible to provide a mechanical structure that can suitably realize both the cooling effect of the heat-generating component in the device and the removal of the heat-generating component (replacement with another component).
- heat can be taken from the upper and lower surfaces of the heat generating component, and the heat radiation effect is high.
- the heat radiation effect can be improved without impairing the ease of replacement of the heat generating component.
- the present invention is embodied by a relatively simple mechanical structure, which is advantageous in cost. Further objects, features, and advantages of the present invention will become apparent from a more detailed description based on embodiments of the present invention described below and the accompanying drawings.
- FIG. 1 shows a cross section of a notebook computer 100 according to an embodiment of the present invention on the main body 110 side.
- FIG. 2 shows an exploded view of the lower casing 111 of the PC 100.
- FIG. 3 shows an exploded view of the lower casing 111 of the PC 100.
- FIG. 4 is a diagram showing an external configuration of the notebook computer 100. As shown in FIG.
- FIG. 5 is a view showing a state in which the lid 120 of the PC 100 is opened and the keyboard 113 is opened to expose the internal structure of the main body.
- FIG. 6 is a diagram showing a conventional example of a cooling structure employed in the notebook computer 100. As shown in FIG.
- FIG. 1 shows a cross section of a main body 110 of a notebook computer 100 according to an embodiment of the present invention.
- the same components as those in FIGS. 4 and 5 are denoted by the same reference numerals.
- a system board 12 having various electric circuits mounted on its surface is accommodated in the lower casing 111.
- the lower casing 1 1 1 and the lower casing 121 are made of a magnesium alloy. This is because of the mechanical strength of the housing, heat dissipation, and EMI (Electronic Interference). ) This is due to its superior prevention.
- a stacking connector 14a is mounted on the lower surface of the system board 12.
- the stacking 'connector 14a is for coupling with the stacking connector 14b on the CPU card 13 side.
- the CPU card 13 has a rectangular opening 15 at a substantially central portion, and has a CPU chip 11 mounted on an upper surface thereof (that is, the same surface as the stacking 'connector 14b) in FIG. It should be noted that, unlike the conventional example shown in FIG. 6, the CPU chip 11 is provided so as to face the system board 12 side.
- Heat pipe between system board 12 and CPU card 13 19 are pinkers.
- a heat pipe is a metal (for example, a sales) sealed pipe in which a capillary substance is mixed inside and a small amount of liquid is sealed in a partial vacuum. Heat is absorbed from one end (the heat-generating component side), and is released at the other end of the pipe (outside the equipment) due to steam condensation. The heat transfer speed of the heat pipe is called the sound velocity level.
- the heat pipe 19 in FIG. 1 has a slender shape with a flat cross section, is bent at a substantially center in the longitudinal direction, and has two flat portions 19a and 19b bordering the bent portion.
- the flat portion 19a is screwed inside the bottom surface of the lower casing 111 by a plurality of screws (see FIG. 2).
- the flat portion 19b is a free end and the lower casing
- the heat pipe 19 is flexible, and the bent portion at the substantially center is formed slightly smaller than the height of the CPU chip 11 at the time of mounting, so that the heat pipe 19 is crimped on the CPU chip 11 with a restoring force. Become like As a result, mechanical and thermal contact between the parts 11 and 19 can be secured by compensating for processing accuracy and assembly errors.
- the CPU chip generates the most heat at its upper surface, but in the present embodiment, the heat is transmitted to the bottom of the lower casing 111 through the heat pipe 19 as a flow path.
- the lower casing 111 is formed integrally using a highly conductive magnesium alloy and has a relatively large surface area, so that it also functions as a heat sink.
- An exchange hole for exchanging the CPU card 13 is formed substantially below the position where the CPU card 13 is provided on the bottom of the lower casing 1 1 (see FIGS. 2 and 3). .
- the bottom cover 16 is fitted into the replacement port and is screwed by a plurality of screws 17 to cover the replacement port.
- a pedestal 18 having a predetermined height is protruded from a substantially central portion of the bottom cover 16.
- the pedestal 18 recognizes the opening 15 of the CPU card 13 and comes into contact with the lower surface of the CPU chip 11.
- the bottom lid 16 is a good heat transfer body made of the same magnesium alloy or aluminum alloy as the casings 111, 121, and also functions as a heat sink. Therefore, ⁇ ? 1 (The heat of the chip 11 is taken away from the upper and lower surfaces by the heat pipe 19 and the bottom cover 16.
- resin sheets 20a and 20b for example, silicon-rubber doped with aluminum oxide powder
- resin sheets 20a and 20b having excellent elasticity and thermal conductivity may be attached to the upper and lower surfaces of the CPU chip 11 respectively.
- the resin sheets 20a and 20b absorb processing errors and assembly errors, and serve to ensure thermal contact between the CPU chip 11 and the heat pipe 19 and the pedestal 18.
- FIGS. 2 and 3 show the perspective view of P from the upper and lower directions, respectively.
- a plurality of bosses / screw holes 21 for screwing the bottom cover 16 and the heat pipe 19 are provided on the inner peripheral surface of the lower opening of the lower casing 111 and on the side edge of the heat pipe 19. Further, a groove is formed along the flat portion 19a for embedding the heat pipe 19 at a predetermined position.
- the CPU card 13 When replacing the CPU card 13, the CPU card 13 may be pulled out from the system board 12 after removing the bottom cover 16. Unlike the conventional example shown in FIG. 6, the CPU 11 and the zip 11 are provided so as to face the system board 12. In addition, the heat pipe 19 is provided in the S3 on the opposite side of the CPU power supply 13 not in the pulling-out direction. In short, there is no member that hinders or interferes with the removal of the CPU card 13, and the replacement operation can be performed very smoothly.
- the present invention has been described in detail with reference to the specific embodiments, it is obvious that those skilled in the art can modify or substitute the embodiments without departing from the spirit of the present invention. For example, the present invention can be applied to a portable information processing device such as a word processor. In short, the present invention has been disclosed by way of example, and should not be construed as limiting. In order to determine the gist of the present invention, the claims described at the beginning should be considered.
- a mechanical structure of an information processing device such as a notebook computer, a laptop computer, or the like, in which a large number of electric circuits are housed in a small space. It is possible to provide a mechanical structure that can suitably realize both the cooling effect of the component and the removal of the heat-generating component (replacement with another component).
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Casings For Electric Apparatus (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
- Facsimiles In General (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1995/001161 WO1996042044A1 (fr) | 1995-06-08 | 1995-06-08 | Structure mecanique d'un appareil pour le traitement d'informations |
KR1019970708340A KR100281199B1 (ko) | 1995-06-08 | 1995-06-08 | 정보 처리 기기의 기계적 구조 |
DE69525081T DE69525081D1 (de) | 1995-06-08 | 1995-06-08 | Mechanische struktur einer informationsverarbeitungsvorrichtung |
EP95921146A EP0834795B1 (en) | 1995-06-08 | 1995-06-08 | Mechanical structure of information processing device |
US08/945,933 US5969940A (en) | 1995-06-08 | 1995-06-08 | Mechanical structure of information processing device |
JP9502883A JP2940642B2 (ja) | 1995-06-08 | 1995-06-08 | 情報処理機器の機械的構造 |
TW084106188A TW270981B (en) | 1995-06-08 | 1995-06-16 | Mechanical structure of an information handling unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1995/001161 WO1996042044A1 (fr) | 1995-06-08 | 1995-06-08 | Structure mecanique d'un appareil pour le traitement d'informations |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996042044A1 true WO1996042044A1 (fr) | 1996-12-27 |
Family
ID=14125997
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1995/001161 WO1996042044A1 (fr) | 1995-06-08 | 1995-06-08 | Structure mecanique d'un appareil pour le traitement d'informations |
Country Status (7)
Country | Link |
---|---|
US (1) | US5969940A (ja) |
EP (1) | EP0834795B1 (ja) |
JP (1) | JP2940642B2 (ja) |
KR (1) | KR100281199B1 (ja) |
DE (1) | DE69525081D1 (ja) |
TW (1) | TW270981B (ja) |
WO (1) | WO1996042044A1 (ja) |
Cited By (4)
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WO2001056346A1 (en) * | 2000-01-25 | 2001-08-02 | Fujitsu Limited | Retention module, heat sink and electronic device |
KR100322144B1 (ko) * | 1997-09-22 | 2002-03-08 | 가타오카 마사타카 | 키보드장치 |
JP2002215264A (ja) * | 2001-01-23 | 2002-07-31 | Matsushita Electric Ind Co Ltd | 情報処理装置 |
JP2008269353A (ja) * | 2007-04-20 | 2008-11-06 | Toshiba Corp | 電子機器 |
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US6366460B1 (en) * | 1998-07-27 | 2002-04-02 | Compaq Computer Corporation | Heat dissipation structure for electronic apparatus component |
KR200232049Y1 (ko) * | 1998-12-02 | 2001-08-07 | 윤종용 | 액세스 도어를 갖는 휴대형 컴퓨터 |
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JP4386219B2 (ja) | 2000-03-31 | 2009-12-16 | 富士通株式会社 | 放熱機構及び当該放熱機構を有する電子機器 |
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US6567269B2 (en) * | 2001-04-23 | 2003-05-20 | Hewlett-Packard Development Company, L.P. | Computer system having removable processor and modular thermal unit |
KR100395953B1 (ko) * | 2001-05-10 | 2003-08-27 | 주식회사 히타치엘지 데이터 스토리지 코리아 | 광기록 또는 재생기기의 방열장치 |
JP3583762B2 (ja) * | 2002-03-07 | 2004-11-04 | 株式会社東芝 | 電子機器 |
JP2005107122A (ja) | 2003-09-30 | 2005-04-21 | Toshiba Corp | 電子機器 |
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JP4387777B2 (ja) | 2003-11-28 | 2009-12-24 | 株式会社東芝 | 電子機器 |
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JP2005317797A (ja) | 2004-04-28 | 2005-11-10 | Toshiba Corp | ポンプ、電子機器および冷却装置 |
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JP2006286036A (ja) * | 2005-03-31 | 2006-10-19 | Orion Denki Kk | 記録再生装置 |
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KR102013326B1 (ko) * | 2012-08-29 | 2019-08-23 | 삼성전자주식회사 | 휴대단말장치에 구비된 슬롯 및 윈도우 보호 커버 |
US9554488B2 (en) * | 2014-04-18 | 2017-01-24 | Raytheon Company | Method to align surface mount packages for thermal enhancement |
WO2016153811A1 (en) * | 2015-03-20 | 2016-09-29 | Apple Inc. | One piece frame for a component in an electronic device |
CN105599612A (zh) * | 2015-12-25 | 2016-05-25 | 重庆德科电子仪表有限公司 | 一种仪表后盖与液晶支架的组件 |
KR20190097475A (ko) * | 2018-02-12 | 2019-08-21 | 조인셋 주식회사 | 열 전달이 향상된 히트 파이프 |
US20190289745A1 (en) * | 2018-03-13 | 2019-09-19 | Rosemount Aerospace Inc. | Flexible heat sink for aircraft electronic units |
US20230247349A1 (en) * | 2022-01-28 | 2023-08-03 | Apple Inc. | Electronic device |
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JPS51150237A (en) * | 1975-06-19 | 1976-12-23 | Oki Electric Ind Co Ltd | Pachage |
JPH02224361A (ja) * | 1989-02-27 | 1990-09-06 | Nec Corp | 集積回路ケース |
JPH062432U (ja) * | 1992-06-02 | 1994-01-14 | 株式会社東芝 | 電子機器 |
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US5134547A (en) * | 1989-02-11 | 1992-07-28 | Olympus Optical Co., Ltd. | Electric apparatus housing an electromagnetic wave noise generating source |
WO1992002117A1 (en) * | 1990-07-26 | 1992-02-06 | Fujitsu Limited | Heat dissipating structure of semiconductor device |
US5424913A (en) * | 1994-01-11 | 1995-06-13 | Dell Usa, L.P. | Heat sink/component access door for portable computers |
JP3258198B2 (ja) * | 1995-04-28 | 2002-02-18 | 株式会社東芝 | 回路モジュールの冷却装置およびこの冷却装置を有する携帯形電子機器 |
US5805417A (en) * | 1995-10-13 | 1998-09-08 | Hitachi, Ltd. | Heat dissipation structure in a portable computer including a heat dissipation block extending from a heat dissipation plate through a first circuit board to a CPU on a second circuit board |
-
1995
- 1995-06-08 DE DE69525081T patent/DE69525081D1/de not_active Expired - Lifetime
- 1995-06-08 KR KR1019970708340A patent/KR100281199B1/ko not_active IP Right Cessation
- 1995-06-08 JP JP9502883A patent/JP2940642B2/ja not_active Expired - Fee Related
- 1995-06-08 US US08/945,933 patent/US5969940A/en not_active Expired - Fee Related
- 1995-06-08 EP EP95921146A patent/EP0834795B1/en not_active Expired - Lifetime
- 1995-06-08 WO PCT/JP1995/001161 patent/WO1996042044A1/ja active IP Right Grant
- 1995-06-16 TW TW084106188A patent/TW270981B/zh active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS51150237A (en) * | 1975-06-19 | 1976-12-23 | Oki Electric Ind Co Ltd | Pachage |
JPH02224361A (ja) * | 1989-02-27 | 1990-09-06 | Nec Corp | 集積回路ケース |
JPH062432U (ja) * | 1992-06-02 | 1994-01-14 | 株式会社東芝 | 電子機器 |
Non-Patent Citations (1)
Title |
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See also references of EP0834795A4 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100322144B1 (ko) * | 1997-09-22 | 2002-03-08 | 가타오카 마사타카 | 키보드장치 |
WO2001056346A1 (en) * | 2000-01-25 | 2001-08-02 | Fujitsu Limited | Retention module, heat sink and electronic device |
US6992889B1 (en) | 2000-01-25 | 2006-01-31 | Fujitsu Limited | Retention module, heat sink and electronic device |
JP2002215264A (ja) * | 2001-01-23 | 2002-07-31 | Matsushita Electric Ind Co Ltd | 情報処理装置 |
JP4654517B2 (ja) * | 2001-01-23 | 2011-03-23 | パナソニック株式会社 | 情報処理装置 |
JP2008269353A (ja) * | 2007-04-20 | 2008-11-06 | Toshiba Corp | 電子機器 |
Also Published As
Publication number | Publication date |
---|---|
KR100281199B1 (ko) | 2001-02-01 |
TW270981B (en) | 1996-02-21 |
KR19990021866A (ko) | 1999-03-25 |
EP0834795B1 (en) | 2002-01-02 |
EP0834795A1 (en) | 1998-04-08 |
US5969940A (en) | 1999-10-19 |
DE69525081D1 (de) | 2002-02-28 |
EP0834795A4 (en) | 1999-02-03 |
JP2940642B2 (ja) | 1999-08-25 |
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