Radiating fins and method for manufacturing the same

摘要

Radiating fin assembly (4c) according to the invention has a base plate (5a) and a fin body (6c) held on said base plate, said fin body is constituted from a plurality of substantially plane plate like fins extending each in the flowing direction of cooling fluid, said fins are arranged or stacked in a direction perpendicular to the flowing direction of cooling fluid, said fins have each thereon a plurality of first fin sections arranged in a same plane with determined gaps therebetween and a plurality of second fin sections located each in the portions having none of said first fin sections, and said second fin sections are arranged in a plane offset from the plane of said first fin sections in a direction perpendicular to the flowing direction of cooling fluid.