| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric fan device in which the dimension can be reduced in the direction of the rotation shaft of the fan.SOLUTION: An electric fan device 1 includes a fan 5, a first rotary member 7 fixed to the fan 5, and rotating together with the fan 5 around a rotating shaft 13, a first permanent magnet array 9 where N poles and S poles are arranged alternately on an outer peripheral surface 21 of the first rotary member 7 in the circumferential direction thereof, a second rotary member 27, a second permanent magnet array 29 where N poles and S poles are arranged alternately on a peripheral surface 33 of the second rotary member 27 in the circumferential direction thereof, and coupling magnetically with the first permanent magnet array 9, and a motor 31 for rotating the first rotary member 7 and fan 5, in a state where the second rotary member 27 and the first rotary member 7 are in non-contact, by rotating the second rotary member 27.SELECTED DRAWING: Figure 1 |
