| 摘要 |
<p>PROBLEM TO BE SOLVED: To judge the kind of an attached accessory without passing through extra operation by providing a discrimination means at a part where it can be recognized from the outside when it is attached to a device body. SOLUTION: In this attachable/detachable type accessory member, the discrimination means 12 is provided at the part 11 where it can be recognized from the outside when it is attached to the device body. Namely, the holding part 11 of a primary battery pack 10 is equipped with a lock releasing button 12. Just by loading the pack 10 in the battery pack housing part of a camera, the pack 10 is locked by an internal mechanism, so that it is prevented from falling off even when the camera is swung and from being pulled out just by holding the holding part 11. In order to pull out the pack 10, the button 12 is depressed to detach the lock mechanism and the holding part 11 is grasped and pulled out. In such a case, the color or the design of the button 12 is made different so as to facilitate judgement.</p> |
