To automatically switch a temperature management device to a hot storage mode or a cold storage mode without requiring a complex sensing circuit or sophisticated connection work when a cooling/heating device is switched from a hot storage mode to a cold storage mode or from a hot storage mode to a cold storage mode.
Temperature sensors 12 and 13 sense the internal temperature of the cold/hot storage food delivery vehicle designed to perform cold storage and hot storage in the interior by switching the cooling/heating device between a cold storage mode and a hot storage mode. When an abnormal temperature occurs during the cold storage mode or the hot storage mode, the temperature management device 14 emits an abnormal temperature warning signal. At that time, it is judged whether the delivery vehicle is in the cold storage mode or the hot storage mode on the basis of a percentage change in the internal temperature and changes a set temperature for giving an abnormal temperature warning signal.
| JP4102619 | Warm storage |
| WO2010109580 | WAGON VEHICLE FOR NAIL |
OKADA SHIGERU
YAJIMA KAZUYA
