To effectively prevent the heat loss caused by flowing of the outside air from a dock shelter part with a simple structure when refrigerated articles are loaded on and unloaded from a hauling truck, and to effectively utilize the air introduced to an antifreeze pipe or an antifreeze space mounted on a floor part of a low-temperature refrigerator for preventing the freezing, in a refrigerator provided with a chamber for handling of goods.

In a freezer provided with the low-temperature refrigerator 1 and the antifreeze tube 15 or the antifreeze space 24 mounted in adjacent to the refrigerator for introducing the outside air (a) to the floor part of the chamber for handling of goods 2, the outside air (a) having passed through the antifreeze tube 15 or the antifreeze space 24 is introduced to the chamber for handling of goods 2. Further a pipe conduit 7 and a fan 6 are mounted to introduce the outside air (a) having passed through the antifreeze tube 15 or the antifreeze space 24 to the chamber for handling of goods 2.