PROBLEM TO BE SOLVED: To provide a volatilization device allowing easy insertion of a suction wick and preventing spill upon falling down.SOLUTION: A mounting unit 13 mounted on a mouth part 12 of a container 11 is constituted of a cap 21 and a decoration cover 22, and a held member 24 is held in a holding space 23. Relation between the material constituting the held member 24 and the component of a liquid medicine 2 is set so that the held member 24 constituting a surrounding part absorbs a liquid medicine 2 and is swollen up. Thereby, when the held member 24 is swollen up, the wall thickness in the horizontal direction of the ring-shaped held member 24 is increased to reduce the diameter of an opening part 101, and a seal part 93 set on the outer periphery face 91 is brought into press-contact with the inside face 92 of the decoration cover 22.COPYRIGHT: (C)2012,JPO&INPIT【課題】吸上芯の挿入を容易としつつ転倒時のこぼれを抑制することができる揮散装置を提供する。【解決手段】容器体11の口部12に装着される装着ユニット13をキャップ21と装飾カバー22で構成し、保持空間23に被保持部材24を保持する。包囲部を構成する被保持部材24が液状薬剤2を吸収して膨潤するように、被保持部材24を構成する材質と液状薬剤2の成分との関係を設定する。これにより、被保持部材24が膨潤した際に、リング状に形成された被保持部材24の水平方向の肉厚が増大し、開口部101を縮径するとともに、外周面91に設定されたシール部93が装飾カバー22の内側面92に圧接されるように構成する。【選択図】図1
