PROBLEM TO BE SOLVED: To provide an ion generation device which widely discharges long-life ions from a ceiling to sterilize and deodorize the inside of the room.SOLUTION: An ion generation device has a main body embedded in a ceiling and generates ions from a ceiling surface. The main body includes: a partition plate 18 disposed in a cylindrical main body case 10 a sirocco fan 23 as air blowing means disposed below the partition plate 18 electrostatic atomization means 1 disposed at an opening through the partition plate 18 and a grill 11 which is disposed at the lower end of the main body case 10 and has a main body suction opening 12 and a main body discharge opening 13. The electrostatic atomization means 1 includes: a Peltier element 7 an atomization part 6 consisting of a discharge electrode 2, which is in contact with a cooling surface of the Peltier element 7, and an opposite electrode 3 and a cooling fin 8 which is in contact with a heat discharging surface. A swirling air flow is generated by means of a helical air flow path provided in the inside of the main body case 10, and the swirling air flow that was applied to a cooling fin 8 is discharged from the main body discharge opening 13.
