| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooling box capable of quickly and surely changing a heat storage material solution of a heat storage member placed inside a cold insulation chamber into a solid phase.SOLUTION: A cooling box 10 has: a cold insulation chamber 14; a blowout port 5 for blowing out cooled air into the cold insulation chamber 14; a first heat storage member 1 and a second heat storage member 2 which are cooled by the air blown out of the blowout port 5 and store cold heat in the case where a temperature inside the cold insulation chamber 14 is below a predetermined temperature, and which radiate stored cold heat into the cold insulation chamber 14 in the case where the temperature inside the cold insulation chamber 14 is equal to or greater than the predetermined temperature; and a heat storage member placing part 3 for separating the first heat storage member 1 and the second heat storage member 2 and placing them so that a ventilation passage 4 is formed along a blowout direction of the air blown out of the blowout port 5. The first heat storage member 1 and the second heat storage member 2 have; a heat storage material solution 1b in which a latent heat storage material is dissolved; a container 1a for accommodating the heat storage material solution 1b; and a solid over-cooling prevention material 1c which precipitates inside the container 1a. |
