Abstract: This converter comprises: a housing having heat dissipation fins formed on the top surface thereof; a printed circuit board disposed in the inner space of the housing; and a bus bar, the bottom surface of which is in surface contact with the top surface of the printed circuit board, wherein the heat dissipation fins and the bus bar can be disposed overlapping each other in a vertical direction to enhance heat dissipation efficiency and can be further reduced in weight.

Abstract: This converter comprises: a housing having heat dissipation fins formed on the top surface thereof; a printed circuit board disposed in the inner space of the housing; and a bus bar, the bottom surface of which is in surface contact with the top surface of the printed circuit board, wherein the heat dissipation fins and the bus bar can be disposed overlapping each other in a vertical direction to enhance heat dissipation efficiency and can be further reduced in weight.

Abstract: An electricity charging plug device comprises: a housing; an operating part of which a portion is exposed to the outside of the housing; a locking part connected to the operating part and slidably coupled to a vehicle connector when the device is coupled to the vehicle connector; a moving part connected to the operating part and having inclination changes according to the movement of the operating part; and a pressing part connected to the moving part so as to move toward the vehicle connector according to the movement of the moving part, wherein the pressing part protrudes outwards of the housing according to the movement of the moving part to press the vehicle connector.