PROBLEM TO BE SOLVED: To prevent a brush-shaped conductor of a discharge electrode from being in contact with a surface of own device.SOLUTION: An ion generator (1) includes a discharge electrodes (21), (22), projecting from a surface of own device, generating ions by discharging. The discharge electrodes (21), (22) include: a tip part (31), provided with a brush-shaped conductor； and a base end part (33), to which the brush-shaped conductor is mounted. A length by which a base end part (33) is projecting from the surface of own device is longer than a length of the tip part (31).SELECTED DRAWING: Figure 1【課題】放電電極におけるブラシ状の導電体が、自装置の表面と接触しないようにする。【解決手段】イオン発生装置（１）は、自装置の表面から突出し、放電によりイオンを発生させる放電電極（２１）・（２２）を備える。放電電極（２１）・（２２）は、ブラシ状の導電体を備える先端部（３１）と、ブラシ状の導電体が取り付けられる基端部（３３）と、を有し、基端部（３３）が自装置の表面から突出する長さは、先端部（３１）の長さよりも長い。【選択図】図１
