Patent ID: 9653375
Date: 2017-05-16
CPC Classifications: B61C,H01L,H05K

Claim:
1. A vehicular power conversion device, comprising: semiconductor elements working for power conversion and generating heat; a base having a first surface to which the semiconductor elements are connected for absorbing the heat transmitted from the semiconductor elements; a plurality of heat-radiating fins arranged on a second surface of the base facing in an opposite direction as the first surface, and juxtaposed at intervals to form a passage in an axial direction, receiving the heat from the semiconductor elements, and expelling the heat into air flowing through the passage; a first protective fin attached to the second surface of the base and including an end face having an equal length in the juxtaposition direction to and mutually facing one direction end face of at least some of the heat-radiating fins, and extending in the one direction from that end face, the first protective fin being removably attached to the second surface of the base from the plurality of heat-radiating fins; and a second protective fin attached to the second surface of the base and including an end face having an equal length in the juxtaposition direction to and mutually facing the other direction end face of at least some of the heat-radiating fins, and extending in the other direction from that end face, the second protective fin being removably attached to the second surface of the base from the plurality of heat-radiating fins.