DISCLOSED IS AN ION-GENERATION DEVICE PROVIDED WITH: AN AIR BLOWER THAT HAS A MOTOR, SAID MOTOR HAVING OUTPUT SHAFTS (21, 21) IN BOTH DIRECTIONS ALONG THE MOTOR AXIS, AND ALSO HAS TWO IMPELLERS (3, 3) RESPECTIVELY ATTACHED TO THE OUTPUT SHAFTS (21, 21) AND TWO DUCTS (5, 5) WHEREBY THE AIR BLOWN BY THE ROTATION OF THE IMPELLERS (3, 3) IS CONVEYED IN THE SAME DIRECTION IN SEPARATE STREAMS AND RELEASED TO THE OUTSIDE. PART OR ALL OF EACH DUCT (5, 5) IS PROVIDED WITH A LAMINAR AIRFLOW SECTION THAT CAUSES THE AIR TO FORM A LAMINAR FLOW. BY PUTTING AN ION GENERATOR IN EACH LAMINAR AIRFLOW SECTION, IONS PRODUCED BY THE ION GENERATORS CAN BE EFFICIENTLY ADDED TO THE AIR, INCREASING THE CONCENTRATION OF IONS RELEASED INTO THE ROOM TOGETHER WITH THE AIR.
