NOVELTY - A wind-powered generator (15) has a traveling airflow intake port (2), and an electric power generation air path (10) located downstream of the port. A windmill (14) is positioned in the air path. A partition plate (24) is provided to partition off the air path and a rerouting air path (11) formed parallel to power generation air path in a ventilating path (9) at the downstream of power generation air path. A traveling airflow guidance control board (16) set at front end vicinity of plate is connected to ventilating path. The generated power is stored in battery.    USE - Vehicle such as hybrid-type motor vehicle, plug-in type electric vehicle, etc., with wind-powered generator.    ADVANTAGE - The rotating speed of the windmill can be controlled reliably, and the volume of air in the power generation air path can be controlled without raising the wind pressure. When the rotation speed of the windmill increases, the volume of air that hits the windmill and the generator can be decreased, so that lifetime of the windmill or generator can be prolonged. The traveling air flow can be smoothly guided to the power generation air path or the rerouting air path, without generation of turbulences as the front end side is extended in taper shape towards the airflow. Since metal fatigue does not occur in the shaft portion of airflow guidance control board, the size of one layer of a rotating shaft drive device can be reduced. The effect of excessive wind pressure on the air paths can be prevented. Sufficient electric power can be generated, and the driving impotency by the expiry of battery can be prevented. The vehicle's traveling performance is not impaired.    DESCRIPTION OF DRAWING(S) - The drawing shows a side schematic view explaining the mode in which divided guidance of the airflow is carried out bidirectionally.    Traveling airflow intake port (2)    Ventilating path (9)    Electric power generation air path (10)    Rerouting air path (11)    Windmill (14)    Wind-powered generator (15)    Traveling airflow guidance control board (16)    Partition plate (24)