PURPOSE: To provide a refrigerator in which the number of wires passed through a foamed heat insulator can be deleted, an increase in dissipation power can be suppressed, serviceability can be improved and reliability of a circuit can be improved in the refrigerator which is controlled by an electronic controller.

CONSTITUTION: A wire 17 from a load installed in a refrigerator is passed via a through hole 15 for coupling an interior to an exterior thereby to completely eliminate the wire in a foamed heat insulator. Since a control board 14 is provided out of the refrigerator, an increase in heat load and an increase in dissipation power in the refrigerator are eliminated, and serviceability of replacing the board, etc., is improved. Further, heat insulating means 19 is provided at outside of the hole, thereby obviating deterioration of heat insulating performance.