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:
Feb. 20, 1996
Filed:
Jun. 07, 1994
Nobuyuki Yanagi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Cooling air compulsorily introduced from an air inflow hole 18 into a duct 10 by means of a fan 5 is compressed within the duct 10 and enters a duct 13 from an air outflow hole 11 through an air inflow hole 12 to be injected into a package 23 from an air outflow hole 14 through an air inflow hole 15. Subsequently, it flows along both surfaces of a printed circuit board 21, during which it exchanges heat with the heat evolving portion of the printed circuit board 21 to flow out from an air outflow hole 16 into the container body 1. From the interior of a container body 1, air flows out through an air outflow hole 17 to the exterior. The printed circuit board 21 can be cooled efficiently with a small air flow rate and an excellent performance of electromagnetic shielding can be achieved.