PROBLEM TO BE SOLVED: To facilitate detachment of a part of a bottom from a bed device.SOLUTION: A bottom includes: a first main body frame 61 to be attached to a support frame 12 of a bed device 10 a first bottom member 62 placed on an upper surface of the first main body frame 61 in a state where front and rear surfaces are directed in a vertical direction and a first fixing member 63 for detachably fixing the first bottom member 62 to the first main body frame 61. The first fixing member 63 is arranged in an upper surface of the first bottom member 62.SELECTED DRAWING: Figure 1【課題】寝台装置からボトムの一部を容易に取り外すことができる。【解決手段】寝台装置10の支持架台12に取付けられる第1本体フレーム61と、表裏面が上下方向に向けられた状態で第1本体フレーム61の上面に載置された第1ボトム部材62と、第1ボトム部材62を第1本体フレーム61に離脱自在に固定する第1固定部材63と、を備え、第1固定部材63は、第1ボトム部材62の上面に配設されている。【選択図】図1
