PROBLEM TO BE SOLVED: To secure a sufficient airtightness, by fitting squarecolumnar wooden shafts on one side face of a rectangular front face plate, leaving halvings with a specified width at the periphery and fitting heat insulation members to the front face plate except the halvings and connecting A-type and B-type panels. ;SOLUTION: A panel body 1 is constituted of an A-type panel 1a and a B-type panel 1b. A wooden shaft 3 and a heat insulation member 4 are attached to one side of a rectangular front face plate 2 having a strength at the A-type panel 1a and halvings are formed at the outer periphery of the front face plate 2. And a square-columnar connection wooden shaft 6 is fitted so as to contact the heat insulation member 4 at the halving 5 along one side of the A-type panel 1a, in the B-type panel 1b. Then, the heat insulation member 4 where the connection wooden shaft 6 of the B-type panel 1b is not arranged is fitted in the column 9a of a framework and further, the A-type panel 1a is fitted between the connection wooden shaft 6 and the framework and fixed by a fixing metal tool. Accordingly, the panel can be appropriately used in a framework having a longer span than one ken (1.818m).;COPYRIGHT: (C)1998,JPO
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