An air conditioner comprises: a duct (22) for forming an air flow passage (71)； and an ion generation device (26) having needle-like discharge electrodes (41 to 44) which are arranged so as to face each other, and also having an outer case (31) to which the discharge electrodes (41 to 44) are provided, the ion generation device (26) being capable of being mounted to and dismounted from the duct (22). The outer case (31) has a frame shape which includes: an electrode cover section (32) for partially covering the discharge electrodes (41, 42)； an electrode cover section (33) for partially covering the discharge electrodes (43, 44)； and connection sections (34, 35) each connecting one end of the electrode cover section (32) and the corresponding end of the electrode cover section (33). The duct (22) has formed therein grooves (74, 73) into which the connection sections (34, 35) are inserted when the ion generation device (26) is mounted and dismounted, and which guide the outer case (31) in one direction. The outer case (31) has formed therein a space (38) which connects to the air flow passage (71), has the tips of the discharge electrodes (41 to 44) arranged therein, and allows ions to be discharged therein. As a result of this configuration, the air conditioner allows the ion generation device to be mounted to and dismounted from the air conditioner with excellent work efficiency and efficiently delivers ions.L'invention concerne un conditionneur d'air qui comprend: un conduit (22) pour former un passage d'écoulement d'air (71)； et un dispositif de génération d'ions (26) ayant des électrodes de décharge de type aiguille (41 à 44) qui sont disposées de manière à être face à face l'une à l'autre, et ayant aussi un boîtier externe (31) auquel les électrodes de décharge (41 à 44) sont fournies, le dispositif de génération d'ions (26) étant capable d'être monté à et démonté du conduit (22). Le boîtier externe (31) a une forme de cadre qui inclut: une section de couvercle
