PROBLEM TO BE SOLVED: To provide a discharge device having reduced pressure drop.SOLUTION: A discharge device 1000 comprises: a counter electrode 700 on the lower potential side including a plurality of planar parts 731 having a longitudinal flat plate shape arranged in approximately parallel to each other, a first connection part 733R for connecting respective one ends of the longitudinal planar parts 731, and a second connection part 733L for connecting respective other ends of the planar parts 731, which are integrally formed of a conductive plate-like body； and a linear shaped discharge electrode 300 on the higher potential side than the counter electrode 700.【課題】圧力損失の低減を図った放電装置を提供する。【解決手段】放電装置１０００は、略平行に並べられた、長手形状で、かつ、平板形状をなす複数の平板部７３１と、平板部７３１の長手形状における一方の端部どうしをつなぐ第１接続部７３３Ｒと、平板部７３１の他方の端部どうしをつなぐ第２接続部７３３Ｌとが、一枚の導電性の板状体で一体に形成され、低電側の対向電極７００と、平板部７３１どうしの間に長手方向に沿って配置され、対向電極７００よりも高電位側の線状体の放電電極３００とを備えた。【選択図】図４
