Abstract: Wind power generator including a wind turbine rotating in a cylindrical wind tunnel body and capable of generating high output power by accelerating a wind flow. The wind tunnel body expands toward a wind flow direction and the wind turbine is arranged adjacent to a wind inlet of the wind tunnel body. An angle of inclination of a side wall portion of the wind tunnel body against an axis of the wind tunnel body is in a range from 5 to 25 degrees. The inlet of the wind tunnel body has a curved surface smoothly expanding toward an outside of the wind tunnel body. A collar-shaped brim is formed on an outside of an opening edge of a wind outlet of the wind tunnel body. Wind flowing into the wind tunnel body sharply accelerates immediately after passing through the inlet and rotates the wind turbine.

Abstract: A wind power generator provided with a wind turbine rotating in a wind tunnel body, capable of generating high output power by efficiently accelerating a wind flow. The wind power generator comprises a cylindrical wind tunnel body (1) expanding toward a flowing direction of wind and a wind turbine (3) for generating electricity disposed at a position adjacent to an inlet (2a) for wind of the wind tunnel body (1), wherein an angle of inclination &phgr; of a side wall portion of the wind tunnel body (1) against an axis of the wind tunnel body (1) is in a range from 5 to 25 degrees, the inlet (2a) of the wind tunnel body (1) has a curved surface (5) smoothly expanding toward an outside of the wind tunnel body (1), and a collar-shaped brim having a width B is formed on an outside of an opening edge of an outlet (2b) for wind of the wind tunnel body (1).