| 摘要 |
PROBLEM TO BE SOLVED: To easily assemble a plurality of heat insulating panels in spite of a simple and inexpensive constitution. SOLUTION: This heat insulating panel comprises a first panel 2 which has a recess and a flange portion 5 formed at the opening edge of the recess 4, and a second panel 3 which is joined to and integrated with the first panel 2 via the flange portion 5. An internal space, which is formed of the first and second panels 2 and 3, is evacuated. The respective heat insulating panels 1 are arranged in such a checked pattern that the first panel side and the second panel side are alternately positioned. The second panel 3 of the heat insulating panel 1 overlaps a bottom surface of a recess of another adjacent heat insulating panel 1 at least at a peripheral edge. COPYRIGHT: (C)2009,JPO&INPIT
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