PROBLEM TO BE SOLVED: To enhance accuracy of dimensional control of separated interval between a discharge electrode and a counter electrode by reducing the number of constituent components in a discharge device for performing streamer discharge.SOLUTION: In this discharge device, by applying a predetermined voltage between a discharge electrode (51) and a counter electrode (52) arranged opposite to the discharge electrode (51), streamer discharge is performed between a discharge needle (54a) of a discharge part electrically connected to the discharge electrode (51) and the counter electrode (52). A space member (70) setting the separated interval between the discharge electrode (51) and the counter electrode (52) is constituted by an insulator case (70) with a hollowed box-like shape having insulation properties. The discharge electrode (51) is fixed to the upper surface of the inside of this insulator case (70), and the counter electrode (52) is fixed to the lower surface of the inside of the insulator case (70).COPYRIGHT: (C)2015,JPO&INPIT【課題】ストリーマ放電を行う放電装置において、構成部品点数を削減して、放電電極と対向電極との離隔寸法管理の精度を高める。【解決手段】本放電装置は、放電電極(51)と上記放電電極(51)に対向して配置される対向電極(52)との間に所定電圧を印加して、上記放電電極(51)に電気的に接続された放電部の放電針(54a)と対向電極(52)との間でストリーマ放電を行う。放電電極(51)と対向電極(52)の離隔を設定するスペース部材(70)は、絶縁性を有する中空の箱体形状の絶縁体ケース(70)で構成される。この絶縁体ケース(70)の内部上面に放電電極(51)が固定され、絶縁体ケース(70)の内部下面に対向電極(52)が固定される。【選択図】図9
