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US20100139905A1 - Combination Heat Sink Formed of a Stack of Heat Spreader Sheet Members - Google Patents

Combination Heat Sink Formed of a Stack of Heat Spreader Sheet Members Download PDF

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Publication number
US20100139905A1
US20100139905A1 US12/329,572 US32957208A US2010139905A1 US 20100139905 A1 US20100139905 A1 US 20100139905A1 US 32957208 A US32957208 A US 32957208A US 2010139905 A1 US2010139905 A1 US 2010139905A1
Authority
US
United States
Prior art keywords
heat spreader
spreader sheet
sheet member
heat
flat base
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.)
Abandoned
Application number
US12/329,572
Inventor
Chin-Hsing Horng
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.)
Yuan Deng Metals Industrial Co Ltd
Original Assignee
Yuan Deng Metals Industrial Co 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 Yuan Deng Metals Industrial Co Ltd filed Critical Yuan Deng Metals Industrial Co Ltd
Priority to US12/329,572 priority Critical patent/US20100139905A1/en
Assigned to YUAN DENG METALS INDUSTRIAL CO. LTD. reassignment YUAN DENG METALS INDUSTRIAL CO. LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HORNG, CHIN-HSING
Publication of US20100139905A1 publication Critical patent/US20100139905A1/en
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H01L23/3672—Foil-like cooling fins or heat sinks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
    • H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07
    • H01L21/4814—Conductive parts
    • H01L21/4871—Bases, plates or heatsinks
    • H01L21/4882—Assembly of heatsink parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
    • H01L23/4093—Snap-on arrangements, e.g. clips
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001—Technical content checked by a classifier
    • H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Definitions

  • the present invention relates to a heat sink and more particularly, to a combination heat sink formed by means of fastening a number of heat spreader sheet members in a stack.
  • An advanced electronic device has a high operation speed. During operation of a high-speed electronic device, much waste heat is produced. To maintain normal functioning of a high-speed electronic device, heat sink or cooler means must be provided to carry waste heat away rapidly, avoiding the accumulation of heat. To enhance the heat dissipation performance of a heat sink, the heat spreading surface area must be relatively increased. Increasing the number of heat spreader sheet members or radiation fins can increase the heat spreading surface area. However, increasing the number of heat spreader sheet members or radiation fins of a heat sink relatively lowers the fabrication speed.
  • the present invention has been accomplished under the circumstances in view. It is one object of the present invention to provide a combination heat sink, which is formed of a number of heat spreader sheet members that are fastened together in a stack. It is another object of the present invention to provide a combination heat sink, which allows quick installation of a number of heat spreader sheet members to form the desired combination heat sink without the use of any fastening devices.
  • a combination heat sink is formed of a stack of heat spreader sheet members.
  • Each heat spreader sheet member has a flat base panel and two side flanges respectively perpendicularly extending along two opposite lateral sides of the flat base panel in a parallel manner. Further, each side flange has a plurality of protruding positioning portions. When two heat spreader sheet members are attached together, the protruding positioning portions of one heat spreader sheet member are bent sideways and secured to the side flanges of the other heat spreader sheet member, and therefore the two stacked heat spreader sheet members are firmed secured together.
  • each heat spreader sheet member has a plurality of narrow elongated notches respectively symmetrically formed on the two opposite lateral sides thereof.
  • the narrow elongated notches of one heat spreader sheet member receive the protruding positioning portions of another heat spreader sheet member respectively, facilitating installation
  • FIG. 1 illustrates two heat spreader sheet members before installation according to the present invention.
  • FIG. 2 corresponds to FIG. 1 , showing the two heat spreader sheet members attached together.
  • FIG. 3 corresponds to FIG. 2 , showing the protruding positioning portions of one heat spreader sheet member fastened to the side flanges of the other heat spreader sheet member.
  • a heat spreader sheet member 1 in accordance with the present invention comprising a flat base panel 11 , two side flanges 12 respectively perpendicularly extending along two opposite lateral sides of the flat base panel 11 in a parallel manner, and a plurality of narrow elongated notches 111 cut through the flat base panel 11 and symmetrically disposed at two opposite lateral sides and respectively transversely extending through the side flanges 12 .
  • the side flanges 12 are stamped, forming a plurality of protruding positioning portions 121 corresponding to the notches 111 .
  • the protruding positioning portions 121 are respectively suspending right below the notches 111 .
  • the extending direction of the notches 111 is perpendicular to the corresponding side flange 12 .
  • one heat spreader sheet member 1 is attached to the top side of the other heat spreader sheet member 1 to insert the protruding positioning portions 121 of the upper heat spreader sheet member 1 through the notches 111 of the lower heat spreader sheet member 1 , and then the protruding positioning portions 121 of the upper heat spreader sheet member 1 is bent sideways to have the protruding positioning portions 121 of the upper heat spreader sheet member 1 be closely attached to the side flanges 12 of the lower heat spreader sheet member 1 .
  • the two heat spreader sheet members 1 are fastened together.
  • a number of heat spreader sheet members 1 are stacked up, forming a heat sink.
  • the heat spreader sheet member 1 is a single-piece member made of a copper or aluminum sheet material.
  • the gap between the protruding positioning portions 121 and the topmost edge of the side flanges 12 is approximately equal to the wall thickness of the flat base panel 11 , therefore the flat base panel 11 of one heat spreader sheet member 1 can be fitted into the gap between the protruding positioning portions 121 and side flanges 12 of another heat spreader sheet member 1 to have the flat base panel 11 of one heat spreader sheet member 1 be supported on the side flanges 12 of another heat spreader sheet member 1 , allowing circulation of air through the space between the flat base panels 11 of the two stacked heat spreader sheet members 1 .

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

A combination heat sink formed of a stack of heat spreader sheet members is disclosed. Each heat spreader sheet member has a flat base panel two side flanges respectively perpendicularly extending along two opposite lateral sides of the flat base panel in a parallel manner, a plurality of narrow elongated notches respectively symmetrically formed on the two opposite lateral sides of the flat base panel, and a plurality of protruding positioning portions respectively formed of the side flanges in such a manner that when two heat spreader sheet members are attached together the protruding positioning portions of one heat spreader sheet member are inserted through the narrow elongated notches of the other heat spreader sheet member bent sideways and secured to the side flanges of the other heat spreader sheet member, and therefore the two stacked heat spreader sheet members are firmed secured together.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a heat sink and more particularly, to a combination heat sink formed by means of fastening a number of heat spreader sheet members in a stack.
  • 2. Description of the Related Art
  • An advanced electronic device has a high operation speed. During operation of a high-speed electronic device, much waste heat is produced. To maintain normal functioning of a high-speed electronic device, heat sink or cooler means must be provided to carry waste heat away rapidly, avoiding the accumulation of heat. To enhance the heat dissipation performance of a heat sink, the heat spreading surface area must be relatively increased. Increasing the number of heat spreader sheet members or radiation fins can increase the heat spreading surface area. However, increasing the number of heat spreader sheet members or radiation fins of a heat sink relatively lowers the fabrication speed.
  • Therefore, it is desirable to provide a combination heat sink that can be easily and rapidly assembled.
    • SUMMARY OF THE INVENTION
  • The present invention has been accomplished under the circumstances in view. It is one object of the present invention to provide a combination heat sink, which is formed of a number of heat spreader sheet members that are fastened together in a stack. It is another object of the present invention to provide a combination heat sink, which allows quick installation of a number of heat spreader sheet members to form the desired combination heat sink without the use of any fastening devices.
  • To achieve these and other objects of the present invention, a combination heat sink is formed of a stack of heat spreader sheet members. Each heat spreader sheet member has a flat base panel and two side flanges respectively perpendicularly extending along two opposite lateral sides of the flat base panel in a parallel manner. Further, each side flange has a plurality of protruding positioning portions. When two heat spreader sheet members are attached together, the protruding positioning portions of one heat spreader sheet member are bent sideways and secured to the side flanges of the other heat spreader sheet member, and therefore the two stacked heat spreader sheet members are firmed secured together.
  • Further, the flat base panel of each heat spreader sheet member has a plurality of narrow elongated notches respectively symmetrically formed on the two opposite lateral sides thereof. When two heat spreader sheet members are attached together, the narrow elongated notches of one heat spreader sheet member receive the protruding positioning portions of another heat spreader sheet member respectively, facilitating installation
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 illustrates two heat spreader sheet members before installation according to the present invention.
  • FIG. 2 corresponds to FIG. 1, showing the two heat spreader sheet members attached together.
  • FIG. 3 corresponds to FIG. 2, showing the protruding positioning portions of one heat spreader sheet member fastened to the side flanges of the other heat spreader sheet member.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIG. 1, a heat spreader sheet member 1 in accordance with the present invention is shown comprising a flat base panel 11, two side flanges 12 respectively perpendicularly extending along two opposite lateral sides of the flat base panel 11 in a parallel manner, and a plurality of narrow elongated notches 111 cut through the flat base panel 11 and symmetrically disposed at two opposite lateral sides and respectively transversely extending through the side flanges 12. The side flanges 12 are stamped, forming a plurality of protruding positioning portions 121 corresponding to the notches 111. The protruding positioning portions 121 are respectively suspending right below the notches 111. The extending direction of the notches 111 is perpendicular to the corresponding side flange 12.
  • Referring to FIGS. 2 and 3 and FIG. 1 again, when stacking two heat spreader sheet members 1 together, one heat spreader sheet member 1 is attached to the top side of the other heat spreader sheet member 1 to insert the protruding positioning portions 121 of the upper heat spreader sheet member 1 through the notches 111 of the lower heat spreader sheet member 1, and then the protruding positioning portions 121 of the upper heat spreader sheet member 1 is bent sideways to have the protruding positioning portions 121 of the upper heat spreader sheet member 1 be closely attached to the side flanges 12 of the lower heat spreader sheet member 1. Thus, the two heat spreader sheet members 1 are fastened together. By means of the aforesaid installation procedure, a number of heat spreader sheet members 1 are stacked up, forming a heat sink.
  • Further, the heat spreader sheet member 1 is a single-piece member made of a copper or aluminum sheet material.
  • In conclusion, the invention has advantages and features as follows:
  • 1. By means of inserting the protruding positioning portions 121 of a first heat spreader sheet member 1 through the notches 111 of a second heat spreader sheet member 1, and then bending the protruding positioning portions 121 of the first heat spreader sheet member 1 sideways to have the protruding positioning portions 121 of the first heat spreader sheet member 1 be closely attached to the side flanges 12 of the second heat spreader sheet member 1, two heat spreader sheet members 1 are fastened together in a stack. Thus, a number of heat spreader sheet members 1 can be stacked up easily and rapidly, forming a heat sink. Further, because a heat spreader sheet member in accordance with the present invention is a single-piece member directly stamped from a copper or aluminum sheet material, the fabrication cost is low.
  • 2. The gap between the protruding positioning portions 121 and the topmost edge of the side flanges 12 is approximately equal to the wall thickness of the flat base panel 11, therefore the flat base panel 11 of one heat spreader sheet member 1 can be fitted into the gap between the protruding positioning portions 121 and side flanges 12 of another heat spreader sheet member 1 to have the flat base panel 11 of one heat spreader sheet member 1 be supported on the side flanges 12 of another heat spreader sheet member 1, allowing circulation of air through the space between the flat base panels 11 of the two stacked heat spreader sheet members 1.
  • Although a particular embodiment of the invention has been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.

Claims (4)

1. A combination heat sink formed of a stack of heat spreader sheet members, each said heat spreader sheet member comprising a flat base panel and two side flanges respectively perpendicularly extending along two opposite lateral sides of said flat base panel in a parallel manner, wherein each said heat spreader sheet member comprises a plurality of narrow elongated notches respectively symmetrically formed on the two opposite lateral sides of the flat base panel thereof, and a plurality of protruding positioning portions respectively formed integral with the side flanges thereof corresponding to said narrow elongated notches in such a manner that the protruding positioning portions of one said heat spreader sheet member are respectively inserted through the narrow elongated notches of another said heat spreader sheet member and bent sideways to have said heat spreader sheet members be fastened together in a stack and the flat base panel of one said heat spreader sheet member be supported on the side flanges of another said heat spreader sheet member.
2. The combination heat sink as claimed in claim 1, wherein each said heat spreader sheet member is a single-piece member
3. The combination heat sink as claimed in claim 1, wherein each said heat spreader sheet member is formed of a copper sheet material.
4. The combination heat sink as claimed in claim 1, wherein each said heat spreader sheet member is formed of an aluminum sheet material.
US12/329,572 2008-12-06 2008-12-06 Combination Heat Sink Formed of a Stack of Heat Spreader Sheet Members Abandoned US20100139905A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/329,572 US20100139905A1 (en) 2008-12-06 2008-12-06 Combination Heat Sink Formed of a Stack of Heat Spreader Sheet Members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/329,572 US20100139905A1 (en) 2008-12-06 2008-12-06 Combination Heat Sink Formed of a Stack of Heat Spreader Sheet Members

Publications (1)

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US20100139905A1 true US20100139905A1 (en) 2010-06-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140318757A1 (en) * 2013-04-24 2014-10-30 Foxconn Technology Co., Ltd. Heat sink incorporating interlocked fin
CN111278261A (en) * 2020-03-12 2020-06-12 江门市江海区金泰达五金有限公司 Radiator and production method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040206475A1 (en) * 2003-03-05 2004-10-21 Lee Hsieh Kun Heat sink assembly having combined fins
US6880621B2 (en) * 2003-02-14 2005-04-19 Dung-Mau Wang Radiator
US6942026B2 (en) * 2003-12-02 2005-09-13 Golden Sun News Techniques Co., Ltd. Fin assembly of heat sink
US20060162920A1 (en) * 2005-01-24 2006-07-27 Yuh-Cheng Chemical Ltd. Heat sink
US7246654B2 (en) * 2005-01-03 2007-07-24 Yun-Chieh Chu Heat dissipating device
US7304851B2 (en) * 2005-06-21 2007-12-04 Yuh-Cheng Chemical Ltd. Heat sink and its fabrication method
US7697294B2 (en) * 2008-06-20 2010-04-13 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Heat dissipation device having an improved fin structure
US7721790B2 (en) * 2006-10-31 2010-05-25 Foxconn Technology Co., Ltd. Heat sink

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6880621B2 (en) * 2003-02-14 2005-04-19 Dung-Mau Wang Radiator
US20040206475A1 (en) * 2003-03-05 2004-10-21 Lee Hsieh Kun Heat sink assembly having combined fins
US6942026B2 (en) * 2003-12-02 2005-09-13 Golden Sun News Techniques Co., Ltd. Fin assembly of heat sink
US7246654B2 (en) * 2005-01-03 2007-07-24 Yun-Chieh Chu Heat dissipating device
US20060162920A1 (en) * 2005-01-24 2006-07-27 Yuh-Cheng Chemical Ltd. Heat sink
US7304851B2 (en) * 2005-06-21 2007-12-04 Yuh-Cheng Chemical Ltd. Heat sink and its fabrication method
US7721790B2 (en) * 2006-10-31 2010-05-25 Foxconn Technology Co., Ltd. Heat sink
US7697294B2 (en) * 2008-06-20 2010-04-13 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Heat dissipation device having an improved fin structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140318757A1 (en) * 2013-04-24 2014-10-30 Foxconn Technology Co., Ltd. Heat sink incorporating interlocked fin
CN111278261A (en) * 2020-03-12 2020-06-12 江门市江海区金泰达五金有限公司 Radiator and production method thereof

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Legal Events

Date Code Title Description
AS Assignment

Owner name: YUAN DENG METALS INDUSTRIAL CO. LTD.,TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HORNG, CHIN-HSING;REEL/FRAME:021934/0358

Effective date: 20081030

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION

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