| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solar-light tracking device wherein a drive is small and or a low cost, tracking precision and reliability can be fully obtained, and moreover power consumption is low. SOLUTION: By a first pawl member 44 functioning as an intermittent drive and a rotary solenoid 46 which drives the first pawl member is the forward direction, driving is performed intermittently with a solar-light receiving device 12 is rotated at a prescribed angle around a perpendicular shaft center or a horizontal shaft center. Rotational resistance is always applied to the rotation around the perpendicular shaft center or to the horizontal shaft center of the solar light-receiving device 12 by a second pawl member 52 functioning as a brake device. Thereby, electric power for holding an attitude of the solar light-receiving device 12 whose attitude is changed by a wind pressure is made unnecessary, and power consumption is reduced remarkably. As compared with a case using a gearbox whose gear ratio is several hundred thousand, deterioration in tracking precision which is caused by a large backlash of a final stage gear is eliminated, and a large number of gears and a rotation shaft for rotatably supporting the gears become unnecessary.</p> |
