PURPOSE: To cut down the assembly man-hours and costs by integrally molding parts into one piece.

CONSTITUTION: As for a casing construction of a refrigerating machine for a refrigerating container, an inside casing 10, evaporator support frames 23 with evaporator fixing brackets 25 to fix both side edges of an evaporator, and evaporator fixing brackets 26 to fix the middle part of the evaporator are integrally molded of synthetic resin into one piece.