PURPOSE: To prevent a container wall from being deflected by the difference of temperatures in the interior and exterior of a vacuum heat-insulating container wherein a vacuum heat-insulating space is defined between an outer container and an inner container and is filled with a filler.
CONSTITUTION: A rolling mechanism 8 consisting of spherical members 9, which are brought into rolling contact with an inner container 3, and retaining plates 10 for the spherical members, is arranged between the inner container 3 and a filler 5. Even when the difference of temperatures in the interior and exterior of a container becomes greater in a state that an ambient air pressure acts on an outer container 2 and the inner container 3 and, as a result, the inner container 3 is thermally extended or retracted, only the inner container 3 is thermally extended or retracted in a smooth manner. Accordingly, deflection of the whole container can be prevented from arising.
YAMAZAKI HIROSHI
MORIMOTO MASANOBU
