| 摘要 |
In an image pickup apparatus having an openable and closable shutter mechanism to protect an image pickup lens portion of a ultra-small and light-weight video camera, the shutter mechanism is composed of a drive mechanism 34 including an output shaft rotated by a motor 36 through a deceleration mechanism, a cam plate 24 engaged with the output shaft of the drive mechanism 34 to be rotated through a shaft mechanism coaxial with the output shaft, a shutter plate 23 engaged with a cam groove 27 of the cam plate 24 to be slidably lowered and elevated in the longitudinal direction of a video camera body portion to open and close the front surface of the image pickup lens portion and a clutch mechanism provided in the drive mechanism 34 to isolate a drive transmission system of the output shaft and the motor 36 when external force stronger than predetermined external force is applied to the shutter plate 23 which is being opened and closed. In the ultra-small micro MV video camera, the shutter mechanism to protect the image pickup lens portion can be miniaturized, the shutter mechanism can be avoided from being broken and the highly-precise shutter mechanism can be obtained by simple and easy assembly. <IMAGE> |
