Patent ID: 6522528
Filing Date: 2003-02-18
Classification: B60R,H01L

Abstract:
An electric power distributor to be mounted on a motor vehicle for distributing electric power from a power source installed in the motor vehicle to a plurality of electric load units equipped in the motor vehicle, the power electric distributor comprising:a plurality of semiconductor operative elements which are incorporated in a power supply circuit from the power source to the electric load units; a control circuit board including a control circuit for controlling operation of the semiconductor operative elements, the control circuit board being disposed to cover the plurality of semiconductor operative elements with a space between the control circuit board and the semiconductor operative elements; a heat transfer layer attached to the control circuit board on a side of the control circuit board facing the semiconductor operative elements; a housing for enclosing the semiconductor operative elements and the control circuit board; a heat releasing member attached to the semiconductor operative elements and exposed to outside of the housing to release heat caused on the semiconductor operative elements; and a heat transfer member heat-conductively connected between the heat transfer layer and the heat releasing member to transfer heat received by the heat transfer layer to the heat releasing member.