Cooling device and electronic apparatus

• US 7,486,518 B2
• Filed: 06/23/2006
• Issued: 02/03/2009
• Est. Priority Date: 06/30/2005
• Status: Active Grant

• Current Assignee: Toshiba Client Solutions CO., Ltd. (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Tomioka, Kentaro
• Primary Examiner(s): Gandhi; Jayprakash N
• Assistant Examiner(s): Thomas; Bradley H
• Application Number:
  US11/474,178
• Publication Number:
  US 20070002540A1
• Time in Patent Office: 956 Days
• Field of Search: 361695-696, 361/697, 361699-703, 361/711, 361/718, 165/80.4, 165/185, 165/104.33, 174/252, 174/16.3, 257/E23.098
• US Class Current: 361/718
• CPC Class Codes: G06F 1/203 for portable computers, e.g. for laptops
• CPC Class Codes: G06F 2200/201 Cooling arrangements using cooling fluid
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00528 wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file
• 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

According to one embodiment, a cooling device includes: a heat transfer unit including a passage, through which a coolant circulates, a heat-receiving section, which is thermally connected to a heating element, and a heat-sinking section for dissipating heat received by the heat-receiving section; a heat dissipation member thermally connected to the heat-sinking section; and a fan that blows air to the heat dissipation member. The heat transfer unit includes: a first plate member, in which a groove corresponding to the passage is formed; and a second plate member, which covers the groove. The heat-receiving section and the heat-sinking section are provided on one of the first and second plate members. The fan is provided on one side of the first or second plate member that is provided with the heat-receiving section and the heat-sinking section.

Claims

1. A cooling device comprising:

a heat transfer unit including (i) a passage, through which a coolant circulates in a first direction, (ii) a heat-receiving section thermally connected to a heating element, (iii) a heat-sinking section for dissipating heat received by the heat-receiving section, (iv) a first plate member, in which a groove corresponding to the passage is formed, (v) a plurality of protrusions, each protrusion is inclined so as to form an obtuse angle between a sidewall of the groove and a surface of the protrusion in contact with the coolant flowing in the first direction, and (vi) a second plate member covering the groove, wherein

the heat-receiving section and the heat-sinking section are provided on one of the first and second plate members.

2. An electronic apparatus comprising:

a casing;

a heating element housed in the casing; and

a cooling device that cools the heating element, the cooling device comprising;

a heat transfer unit including a passage through which a coolant circulates in a first direction, a heat-receiving section, which is thermally connected to a heating element, and a heat-sinking section for dissipating heat received by the heat-receiving section;

a heat dissipation member thermally connected to the heat-sinking section; and

a fan that blows air to the heat dissipation member, wherein

the heat transfer unit comprises;

a first plate member, in which a groove corresponding to the passage is formed,

a plurality of protrusions formed over a sidewall of the groove and each of the plurality of protrusions being included so as to form an obtuse angle between the sidewall and a surface of the protrusion in contact with the coolant flowing in the first direction, and

a second plate member, which covers the groove,

the heat-receiving section and the heat-sinking section are provided on one of the first and second plate members, and

the fan is provided on one side of the first or second plate member that is provided with the heat-receiving section and the heat-sinking section.