| 摘要 |
PURPOSE: To diffuse the wind of the lower propeller of upper and lower propellers to four directions upon collision with a floor and and send it directly upward by the upper propeller and to hence diffuse the indoor air more and wider. CONSTITUTION: A motor fixed part 4 is provided at the center of the body 1 to fix a motor 3, and propellers 2 are mounted at the upper and lower parts of the rotary shaft 5 of the motor. |
