PURPOSE: To suppress the temperature variation without power even under an environment under which the difference between day and night in the outside air temperature is great, e.g. a dessert, etc., by constituting almost all part of a container box body of a double layer plate which is formed on a heat reflective surface, on which a vacuum layer is made to exist.
CONSTITUTION: A container main body 2, in which a content appliance 9 is stored, is formed of a main body frame body 21, inner layer plate 22 and outer layer 24, and has a vacuum layer 23 from which air is removed. Also, a hole 25, which a cable 92 goes through, is provided on the container main body 2, and a gap between the cable 92 and hole 25 is sealed by a gasket 7. Also, the inner layer plate 22 and outer layer plate 24 are made of a stainless steel plate with luster, or are silver-plated to raise the reflectance of heat. Also, a lid body 5 is constituted of a transparent inner layer plate 52 and transparent outer layer plate 54, between which a lid frame 51 and vacuum layer 53 are made to exist. A lid body 5 is attached to the main body 2 by a hinge 3, and the opening of the main body 2 is sealed by a clamping fitting 4 with a packing 6.
Yasunaka Yamanaka
Katsuhiro Taniguchi
