| 摘要 |
PROBLEM TO BE SOLVED: To excellently keep merchandise cold while sufficiently enhancing storage efficiency.SOLUTION: A storage box includes: a rectangular parallelepiped storage box body 10 which has a carry-in/out port 11 formed on a front surface and a heat insulation structure; and a door body 20 having a heat insulation structure for opening/closing the carry-in/out port 11 so as to store merchandise W carried-in through the carry-in/out port 11. The storage box includes: a vent hole 23 formed in the storage box body 10; a lid body 24 for opening/closing the vent hole 23; and an opening/closing unit which moves the lid body 24 to be closed so as to close the vent hole 23 when an external temperature of the storage box body 10 is a predetermined reference temperature or more and moves the lid body 24 to be opened so as to open the vent hole 23 when the external temperature is less than the reference temperature.SELECTED DRAWING: Figure 2 |
