| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a flash device that accurately indicates a camera whether photography with flash light is to be performed or photography with natural light is to be performed according to a change in the posture of the flash device and realizes the photography with the flash light is instantaneously performed when it is set in using posture. <P>SOLUTION: The external flash device where a light emitting tube Xe is made to emit light with the charging charge of a main capacitor C2 and whose posture is changed to the using posture and housing posture in a state where it is attached to the camera is equipped with a signal switching means SW2 inputting a flash light photography improper signal in the camera with the change in the posture from the using posture to the housing posture and inputting a flash light photography permissible signal with the change in the posture from the housing posture to the using posture, and charging circuits 3 and 10 capable of charging a main capacitor C1 regardless of the state of the switching means SW2 when a power source is turned on. <P>COPYRIGHT: (C)2004,JPO |
