Patent ID: 6381134
Filing Date: 2002-04-30
Classification: H05K

Abstract:
A ventilated electric instrument comprising:(a) a casing bottom part substantially in the shape of an open-top box integrally comprising a bottom panel, a pair of opposite face panels, and a pair of opposite partition panels; (b) a casing top part substantially in the shape of an inverted U integrally comprising a top panel, which closes the open-top of the casing bottom part and which defines in combination therewith a circuit chamber between the pair of partition panels of the casing bottom part, and a pair of opposite side panels depending from the top panel to define in combination with the partition panels of the casing bottom part an air intake passageway and an exhaust passageway on opposite sides of the circuit chamber; (c) a fan mounted in the circuit chamber for causing airflow from the intake passageway to the exhaust passageway through the circuit chamber; (d) electric circuit means mounted in the circuit chamber and positioned to be cooled by the airflow; and (e) terminal means arranged on one of the face panels of the casing bottom part and electrically connected to the electric circuit means.