SERVO AMPLIFIER INCLUDING HEAT SINK HAVING SHORTENED FLOW PASSAGE FOR NATURAL CONVECTION

Title:

SERVO AMPLIFIER INCLUDING HEAT SINK HAVING SHORTENED FLOW PASSAGE FOR NATURAL CONVECTION

Document Type and Number:

Japanese Patent JP2014022680

Kind Code:

A

Abstract:

To provide a servo amplifier including a heat sink with an excellent heat radiation effect.

A servo amplifier includes a heat generation source and a heat sink which is thermally connected to the heat generation source and utilizes natural convection to dissipate heat from the heat generation source to a circumference. The heat sink has a plurality of fins formed to define a plurality of flow passages for a fluid flowing from below to above. Each flow passage extends over between a lowermost part operating as an air suction part and an uppermost part operating as an exhausting part. Each flow passage has a length smaller than a perpendicular dimension of a part where the fins are formed. Further, a lowermost part of each flow passage is arranged horizontally apart so as not to be arranged perpendicularly above uppermost parts of other flow passages.

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Inventors:

TAKIGAWA HIROSHI
OKUAKI KENICHI

Application Number:

JP2012162512A

Publication Date:

February 03, 2014

Filing Date:

July 23, 2012

Export Citation:

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Assignee:

FANUC LTD

International Classes:

H05K7/20; H01L23/36

Domestic Patent References:

JP2007032535A	2007-02-08
JPH05251883A	1993-09-28
JP2012089594A	2012-05-10

Attorney, Agent or Firm:

Atsushi Aoki
Tetsuro Shimada
Shinji Mitsuhashi
Masahiro Tahara
Hirose Shigeki
Kazuo Maejima

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