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:
Nov. 15, 1994
Filed:
Oct. 04, 1991
Noriyuki Ashiwake, Tsuchiura, JP;
Takahiro Daikoku, Ushiku, JP;
Toshio Hatsuda, Ibaraki, JP;
Shizuo Zushi, Hadano, JP;
Satomi Kobayashi, Rye, NY (US);
Hitachi, Ltd., , JP;
Abstract
Disclosed are heat sinks particularly effective in cooling semiconductors of a high heat dissipating density and including a multiplicity of tabular fins laminated via spacers and having through-holes pierced in their central parts, the holes admitting introduction of cooling fluids which radially flow in between the fins. The cooling fluids are supplied to the respective heat sinks attached to the multiplicity of semiconductors mounted on a board. In a specific form of the invention, the semiconductor cooling device has a heat sink provided with parallel tabular internal fins and a cooling fluid nozzle having an elongated opening substantially orthogonal to the fins, the nozzle being disposed to span over the parallel tabular fins substantially at longitudinal mid portions of these fins, so that the cooling fluid is evenly distributed from the mid portions of the fins to both longitudinal ends of the fins.