Tower type heat sink

• US 7,165,603 B2
• Filed: 04/11/2003
• Issued: 01/23/2007
• Est. Priority Date: 04/15/2002
• Status: Expired due to Fees

• Current Assignee: Fujikura Td.
• Original Assignee: Fujikura Limited
• Inventors: Mochizuki, Masataka, Mashiko, Koichi
• Primary Examiner(s): DUONG, THO V
• Application Number:
  US10/411,281
• Publication Number:
  US 20030218849A1
• Time in Patent Office: 1,383 Days
• Field of Search: 165/104.21, 165/104.26, 165/104.33, 165/185, 165/80.4, 165/80.3, 361/700, 361702-704, 257714-716, 174/15.2
• US Class Current: 165/104.21
• CPC Class Codes: F28D 15/02 in which the medium condenses and evaporates, e.g. heat pipes heat pipes used in solar heat collectors F24S10/95; in radiators F28D1/0226; in nuclear reactors G21C15/257
• CPC Class Codes: H01L 23/427 Cooling by change of state, e.g. use of heat pipes by liquefied gas H01L23/445
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A tower type heat sink wherein a heat pipe for transporting a heat whereby a latent heat of a working fluid encapsulated therein is erected generally vertical on a top face of a flat plate shaped base portion, and a plurality of heat radiating fins are mounted on said heat pipe, and comprises an intermediate portion formed with bending a portion of said heat pipe where the heat radiating fins are not mounted thereon, and a through hole formed on said base portion for letting through said heat pipe to protrude one of its end portion of which said fins are mounted thereon from the top face of said base portion, and to expose the said heating portion on the bottom face of said base portion.

Claims

1. A tower type heat sink wherein a heat pipe for transferring a heat by a latent heat of a working fluid encapsulated therein is erected generally vertical on a top face of the flat plate shaped base portion, and a plurality of heat radiating fins are mounted on said heat pipe, comprising:

a heating portion formed by bending a part of said heat pipe where said heat radiating fins are not mounted thereon;

an installation groove formed on said base portion, an end portion of the heat pipe of which said fins are mounted thereon protrudes from the installation groove from the top face of said base portion, said heating portion being fixed within the installation groove generally in parallel with said bottom face of the base portion;

a curved portion formed on the heat pipe between the part where fins are mounted and said heating portion with no fins mounted thereon, and extending towards the top face of the base portion from said installation groove;

a fixing member for fixing said base portion by pressing a peripheral part of said base portion; and

a heat insulating member intervening in between said base portion and said fixing member.

2. A tower type heat sink according to claim 1, further comprising:

an installation face formed on the bottom face of said base portion, and an exothermic member is to be contacted thereon.

3. A tower type heat sink according to claim 1, further comprising:

a fastening member mounted on the top face of the base portion, for fixing said heating portion to said base portion by pressing.

4. A tower type heat sink according to claim 1, further comprising a shield wall erected for surrounding the periphery of said curved portion, wherein said shield wall is erected on said fixing member.

5. A tower type heat sink according to claim 1,

wherein said heat pipe comprises an L-shaped heat pipe in which one of its end portion is bent generally at right angles, and

wherein said heating portion is formed on said end portion which is bent generally at right angles.

6. A tower type heat sink according to claim 1, further comprising a shield wall erected for surrounding the periphery of said curved portion.