The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 15, 2008
Filed:
Aug. 13, 2004
Shunsuke Yamana, Odawara, JP;
Hiroshi Fukuda, Odawara, JP;
Kenji Fujita, Odawara, JP;
Takayuki Atarashi, Tsuchiura, JP;
Hitoshi Matsushima, Ryugasaki, JP;
Shunsuke Yamana, Odawara, JP;
Hiroshi Fukuda, Odawara, JP;
Kenji Fujita, Odawara, JP;
Takayuki Atarashi, Tsuchiura, JP;
Hitoshi Matsushima, Ryugasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In this invention, the CPU of a NAS board, which is liable to become hot, is cooled by concentrating a larger amount of air onto a heat sink. A plurality of logic circuit boardsare mounted on a control sectionD of a disc array device. The circuit componentA for realizing the NAS function, liable to become hot, is provided with a heat sink. The aperture of the main air inlet section (Wb) is covered with a top plate. Airflow guidance sections (Wa, Wc) are respectively provided on both sides of the main air inlet section. Since the fin pitch of the airflow guidance sections is set narrow, the air inflow resistance (airflow resistance) of these is higher than that of the main air inlet section. Due to this difference in airflow resistance, the air in the vicinity of the airflow guidance sections is guided into the main air inlet section. The top plateprevents outflow of air that has flowed into the main air inlet section to outside the heat sink