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:
Jul. 21, 1987
Filed:
Jan. 14, 1985
Toshio Ohashi, Atsugi, JP;
Shukou Yamamoto, Sano, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
A transistor protection device in accordance with the present invention includes a base platform consisting of a flat aluminum board for fixing a power transistor with small screws or the like. A supporting plate is placed at a prescribed distance from the base platform, and the base platform and the supporting plate are separated by means of solid heat conducting rods and hollow rods through which are inserted conductors. The heat conducting rods are arranged to have their top ends to make contact with the bottom surface of the power transistor which is the portion of maximum heat production in the power transistor, in order to conduct the heat generated to the outside of the power transistor. Because of the better radiation capability which takes place in relatively thin rods, there are installed a plurality of the heat conducting rods. Moreover, on the heat conducting rods, in the section between the base platform and the supporting plate, there are provided numerous radiation fins stacked one after another in order to enhance the radiation capability of the heat conducting rods.