PURPOSE: To miniaturize a device and to reduce the cost thereof by executing horizontal turning and vertical tilt by a single motor.
CONSTITUTION: In the case the center of a photosensor 1-6 is not aligned with a signal light incident position, the motor 1-34 is energized to turn counterclockwise, so that driving power is transmitted through reduction gears 1-35 to 1-38, and the gear 1-38 and a lever 1-39 also move counterclockwise, then a clutch gear 1-41 meshes with gears 1-42 and 1-46. When the gear 1-46 rotates, a tracking case 1-25 is deflected by a fixed angle. By energizing the motor 1-34 so that it may turn clockwise, the power is transmitted through the reduction gears 1-35 to 1-38 and the gear 1-38 and the lever 1-39 also move clockwise, then the clutch gear 1-41 meshes with the gear 1-43. Meanwhile, since a cam surface is formed on the upper surface of the gear 1-43 and an elevating member 45 abutting on one part on the cam surface by a part 1-45a is arranged, the member 1-45 moves up and down along the cam surface when the gear 1-43 is turned, then a camera base 1-27 is tilted in an upper direction by a boss member 1-45c.
FUSHIMI MASAHIRO
KAWAKITA KATSUYA
