PURPOSE: To provide a heat insulated storage vehicle not only economizing fuel consumption by heating the inside of a storage using hot water from an engine room during travel but also dissolving the environmental pollution of exhaust gas and noise generated in the idling state of an engine at the starting time and also shortening waiting time.
CONSTITUTION: A part of a heater circulating path 1 reaching an interior heater from an engine room 11 is diverged to form an engine room hot water circulating path 20 for feeding hot water to a heat insulated storage heat exchanger 21 facing a part in a storage. A hot water boiler 31 is provided outside of a vehicle, and a circulating pipe from the hot water boiler 31 is removably connected to a part of the engine room hot water circulating path 20 through couplers 32a, 33a so as to form a hot water boiler circulating path 30. Hot water can thereby be fed to the heat insulated storage heat exchanger 21 alternatively from two heat sources that are the engine room 11 and the external hot water boiler 31.