PURPOSE: To improve thermal insulation performance and maintenance performance of a cooled air circulation type refrigeration showcase.

CONSTITUTION: In a cooled air circulation type refrigeration showcase, wherein a cooler 6 and a fan for feeding air into a showcase are provided in a cooled air circulation duct 5 defined between an outer case 1 and an inner case 2 of a body of case to circulate cooled air into the showcase for thermally insulating commodities on display, the longitudinal dimension of an impeller 8a of the cross-flow fan 8 is selected so as to correspond to the width of the cooled air circulation duct and further the fan is disposed at the rear of the case under a deck pan 4 provided at the bottom of the case.