| 摘要 |
A cooling box to perform temperature control so that an internal temperature of the cooling box storing an item to be refrigerated becomes equal to a set temperature includes: a control device including an ambient-temperature sensor to detect an ambient temperature of the box, and adjust a supply amount of warm air into the box after stopping supply of cold air thereinto based on the ambient temperature; and a thermally-insulating-door sensor to detect whether an opening connected with the interior of the cooling box is in either an open or closed state, when the sensor detects a change of the opening from an open to closed state, the control device executing control so that the warm-air-supply-amount reaches a first value until a predetermined period has elapsed, and executing control so that the warm-air-supply-amount reaches a second value smaller than the first value after the predetermined period has elapsed.
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