gerador acionado por vento

摘要

A first wind driven generator 10A according to an embodiment of the present invention includes: a rotor head 12 having wind turbine blades 11 attached thereto; a nacelle 14 that pivotally supports the rotor head 12; a tower that supports the nacelle 14; an opening portion 16 that is provided on a tip end of the rotor head 12 and introduces outside air; and a plurality of air-supply acceleration guides 17A that are provided on an outer circumference of the opening portion 16 of the rotor head 12 and collect the outside air in the opening portion 16. The outside air can be actively taken in the rotor head 12 from the opening portion 16 by causing the air-supply acceleration guides 17A to rotate to follow rotation of the rotor head 12. Inside of the rotor head 12 can be efficiently cooled without any need of new motive power because the outside air taken in the rotor head 12 can increase heat release from a surface of a rotor-head cast metal 22.