PROBLEM TO BE SOLVED: To provide an oxygen concentrator which is used by a user with the loss of visual acuity without feeling anxiety by a voice guidance and is also used during a night.SOLUTION: The oxygen concentrator 1 which generates compressed air by using a part of the atmosphere, separately produces oxygen by absorbing nitrogen from the compressed air by an absorbing agent, and enables the inhalation of oxygen, which is separately produced, by using an inhaling instrument 14 is equipped with a voice guidance means 203, 23 which generates the voice having the content corresponding to an actuation status of the oxygen concentrator and an operation status at the time of inhalation.COPYRIGHT: (C)2008,JPO&INPIT【課題】音声ガイドにより視力の低下したものも安心して使用でき、また夜間でも使用できる酸素濃縮装置の提供。【解決手段】大気の一部を用いて圧縮空気を発生させ、圧縮空気から吸着剤により窒素を吸着することで酸素を分離生成し、吸引具14を用いて分離生成された酸素を吸入するように構成された酸素濃縮装置1において、酸素濃縮装置の動作状況、吸入時の操作状況に応じた音声内容を音声発生する音声ガイド手段203、23を備える。【選択図】 図7