| 摘要 |
PROBLEM TO BE SOLVED: To prevent dust and a footstep of a vertical passage from entering a medium stage bedroom by laying the vertical passage between the medium stage bedroom and a lower stage bedroom, and arranging a going in and out means leading to the medium stage bedroom, a going in and out means leading to a floor part of an upper stage bedroom and a going in and out means leading to the lower stage bedroom in this vertical passage. SOLUTION: In this sleeper 1, an upper stage bedroom 2, a medium stage bedroom 3 and a lower stage bedroom 4 having respectively relatively low effective heights e, f, g on the left and right by sandwiching a center line part are superposed in upper, middle and lower parts. In this case, a vertical passage 5 having a relatively high effective height (h) is laid between the medium stage bedroom 3 and the lower stage bedroom 4. A sliding door being an entrance means 6 is arranged so as to lead to the medium stage bedroom 3 from this vertical passage 5, and a pivotal cover plate 9 and a half-high sliding door 10 being an entrance means 7 are arranged so as to lead to a lower part of the upper stage bedroom 2 from the vertical passage 5 via an inclined ladder means 8. A doubly folding door being a going in and out means 11 is arranged so as to lead to the lower stage bedroom 4 from the vertical passage 5 via an inclined ladder means 12.
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