PROBLEM TO BE SOLVED: To provide an aroma diffuser which enables a liquid perfume to be evaporated and diffused at any arbitrary timing for a user.SOLUTION: The aroma diffuser A includes a housing member 30 which accommodates a vessel member 10, and an evaporation member 40 impregnated with an essential oil E to be evaporated. The evaporation member 40 is disposed on the side of an inner cylinder 22. The housing member 30 includes an opening 35 for exposing the evaporation member 40 to the outside.COPYRIGHT: (C)2015,JPO&INPIT【課題】使用者の任意のタイミングで液状香料の蒸発・拡散を行うことが可能な芳香器を提供する。【解決手段】芳香器Aは、容器部材10を収容する収容部材30と、収容部材30に収容され、精油Eが浸透して蒸発する蒸発部材40と、を備えている。蒸発部材40は、内筒部22側に配置されている。収容部材30は、蒸発部材40を外部に露出させる露出用開口部35を有している。【選択図】図3