Patent ID: 7495183
Filing Date: 2009-02-24
Classification: H01L,H01R,H05K

Abstract:
1. An electronic circuit apparatus comprising: a circuit board to which a circuit component is fixed by soldering via a solder; a connector which is mounted at a connector mounting portion of a surface of the circuit board to connect the circuit board with an external electrical circuit; and a casing which is insertion-molded by a resin, wherein: the casing is molded to seal a part of the connector, and a whole of the circuit board and the circuit component in the resin, all of surfaces of an assembly of the circuit board and the circuit component other than the connector mounting portion substantially contacting the single resin casing; the resin by which the casing is molded has a hardening reaction temperature lower than a melting point of the solder; the connector includes a pin which is made of an electrically conductive material, and a housing which is made of a resin and houses therein at least one end of the pin; the electronic circuit apparatus further comprises a heat radiation unit; the circuit component is an electronic unit which generates heat; the heat radiation unit is attached to the circuit board so that heat is transmittable from the electronic unit to the heat radiation unit; a part of the heat radiation unit is exposed to an outside of the casing; and the heat radiation unit includes at least one heat radiation fin for radiating heat, and a pair of clip portions which clip the electronic unit so that the heat radiation unit is fixedly attached to the electronic unit.