| 摘要 |
PURPOSE: A bird access preventing device is provided to efficiently prevent the access of birds by periodically repeating a sound. CONSTITUTION: A bird access preventing device comprises a support shaft(10) which comprises a fixing unit(20) for fixing an object, a central tube(30) which is rotationally combined, multiple horizontal bars(32) which are installed in a radial direction, a hemi-spherical rotating blade(33) which carries out a pinwheel function in the outer end of a horizontal bar, a reflector(35) which is installed on the inside concave surface of the hemi-spherical rotating blade, a convex mirror(40) which is installed on the upper side of at least one horizontal bar, a cover screw(50) capable of preventing the penetration of rainwater into a bearing, and a curved pipe(60). |
