Patent ID: 8618501

Claim:
An ion generating device for use in a duct which is used by being set near an outlet port inside the duct, the ion generating device comprising: a mother ion generating unit including: a flat plate-shaped mother unit case having an opening formed in a flat surface of the flat plate-shaped mother unit case; a mother-unit ion generating element which is attached inside the opening of the mother unit case and has a discharge surface at which ions are generated, the discharge surface of the mother-unit ion generating element being exposed through the opening; and a drive circuit which is accommodated in the mother unit case and drives the mother-unit ion generating element; and a daughter ion generating unit including: a flat plate-shaped daughter unit case having an opening formed in a flat surface of the flat plate-shaped daughter unit case; and a daughter-unit ion generating element which is attached inside the opening of the daughter unit case and has a discharge surface at which ions are generated, the discharge surface of the daughter-unit ion generating element being exposed through the opening, the daughter ion generating unit being connected to the drive circuit of the mother ion generating unit such that the daughter-unit ion generating element is driven by the drive circuit.