To make it possible to efficiently cool material to be cooled by constituting a small-sized light-weight table refrigerator having no cooler by a cover covering the upper part of the refrigerator body, a cold gas circulating hose and an air pump for circulating the cold gas.

Cold gas is fed from a suction inlet 6 by an air pump 11. The one end of a cold gas circulating hose 10 is mounted at a second through hole 104 previously provided at the deep freezing chamber 101 of a normal refrigerator containing a cooler, and the other end is mounted at the exhaust port 5 of the body 1. The one end of a cold gas circulating hose 9 is mounted at a first through hole 103 previously provided at the chamber 101 of the normal refrigerator containing the cooler, and mounted at the suction inlet 6 of the body 1 via an air pump 11 at the intermediate. When a hose obtained by covering both the hoses 9, 10 as gathered to one bundle the periphery with a heat insulator is used, the cooling efficiency is improved.