| 摘要 |
<p>A bird-frightening device comprises a multiple-face reflecting object (2), connected, with possible oscillations, through an axial pin (5) to a rotating shaft (4) with vertical axis (x) rotatingly controlled by a motor (3). The reflecting object is rotatingly driven by the shaft and is controlled to oscillate, around axis (y) of the above pin, by means of an eccentric wheel (6) kept in contact with an abutment plane (8) by a spring (7). The reflecting object thereby comprises a complex motion rotating around a variableattitude rotation axis (z). Light reflexes coming from the moving reflecting object very efficiently disturb the birds.</p> |
