| 摘要 |
PROBLEM TO BE SOLVED: To provide a double-use mattress board device as a bench and futon dryer realizing relaxed state when it is used as a bench, in which easiness in bringing of a conventional double-use futon dryer/mattress board device capable being converted into the bench is improved, and compaction upon being used as bench and being stored is realized, when it is used futon dryer, both of mattress or comforter may be simultaneously dried and when it is used as the bench, back part hardly be deposition.SOLUTION: One of duckboard type mattress board of a pair of duckboard type mattress boards may be developed into X shape in side view and the other duckboard type mattress board may be developed into lambda letter shape in side view. By developing the one duckboard type mattress board and the other duckboard type mattress board, both of them are used as futon dryer respectively. The one duckboard type mattress board and the other duckboard type mattress board are used as mattress board device when they are converted into flat shape and bound with a binding member.SELECTED DRAWING: Figure 1 |
