To provide a Stirling cooling box capable of preventing dew condensation and freezing of food based upon supercooling of a refrigeration chamber, and capable of preventing dew condensation caused by a temperature difference between a cold air supply passage and the refrigeration chamber.
The Stirling cooling box 1A is provided with a generated cold air supply passage 12 supplying the cold air generated by passing air through a Stirling refrigerating machine to the refrigeration chamber 5, and a circulation cold air supply passage 14 leading the cold air in the refrigeration chamber 5 to a refrigeration chamber 5 exterior, and supplying it again to the refrigeration chamber 5 without passing through the Stirling refrigerating machine. In the generated cold air supply passage 12, one part is extended along the refrigeration chamber 5, and it has a generated cold air blowout opening 12c facing the refrigeration chamber 5. The circulation cold air supply passage 14 is positioned between the generated cold air supply passage 12 and the refrigeration chamber 5, and it has a circulation cold air blowout opening 14c facing the refrigeration chamber 5. The refrigeration chamber 5 has in its interior, a mixing area for mixing the cold air blown out from the generated cold air blowout opening 12c, and the cold air blown out from the circulation cold air blowout opening 14c.
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai