PROBLEM TO BE SOLVED: To provide an ion generating device capable of suppressing unnecessary creeping discharge.SOLUTION: An ion generating device 1 includes: a first electrode 111； a second electrode 112 disposed with a distance allowing for insulation from the first electrode 111； and a substrate 130 to which the first electrode 111 and the second electrode 112 are fixed. Between the first electrode 111 and the second electrode 112, cutouts 131, 132, 133 of a shape in which a part of the substrate 130 is cut out are formed.SELECTED DRAWING: Figure 1【課題】不要な沿面放電を抑制できるイオン発生装置を提供する。【解決手段】イオン発生装置１は、第１の電極１１１と、前記第１の電極１１１に対して絶縁可能な距離を隔てて配置された第２の電極１１２と、前記第１の電極１１１および前記第２の電極１１２が固定された基板１３０とを備え、前記第１の電極１１１と前記第２の電極１１２との間に、前記基板１３０の一部を切り欠いた形状の切り欠き１３１，１３２，１３３が形成されている。【選択図】図１
