| 摘要 |
PROBLEM TO BE SOLVED: To board a ceiling without directly driving nails or the like on the ceiling boards and facilitate exchanging works into new ceiling boards by overlapping rear sashes on front sashes of adjacent ceiling boards laterally arranged to form the ceiling. SOLUTION: A plurality of ceiling boards 2,... on which rear sashes 3, 3 are provided at one of the right and left sides and front sashes 4, 4 are provided at the other side are arranged laterally. Rear sashes 3 are superposed on the front sashes 4 of adjacent ceiling boards 2 to form a ceiling 1. In this case, the side parts of respective ceiling boards 2 are inserted into ceiling board- receive grooves 3b, 3b, 4b, 4b formed in the rear sashes 3 and the front sashes 4. The rear and front sashes 3, 4 can be connected by connecting sashes 5,... positioned at the roof-space side to face the right and left, and the ceiling boards 2 and the rear and front sashes 3, 4 can be formed as a unit. In this way, the ceiling boards can be hung without directly driving fixing tools such as nails into the ceiling boards and hence, exchanging works of the ceiling 1 can be facilitated. |
