Patent ID: 7090044

Claim:
A semiconductor apparatus for an automobile comprising: a module having a semiconductor element for switching control; a base member contacting said module at a surface thereof; a case contacting said base member and having a fluid path providing for flow of a cooling medium; wherein said fluid path comprises a cooling part for cooling said module through said base member, an introducing part for introducing said cooling medium supplied from an outside into said cooling part, and a draining part for draining said cooling medium introduced into said cooling part to the outside; wherein a cross-section area of said fluid path from said introducing part to said cooling part increases at a predetermined rate in a direction in which said cooling medium flows, wherein a cross-section area of said cooling path has a predetermined area, and wherein a cross-section area of said fluid path from said cooling part to said draining part decreases at a predetermined rate in the direction in which said cooling medium flows.