| 摘要 |
<P>PROBLEM TO BE SOLVED: To ensure locking of a lighting cover at a covering position by installing a second lock mechanism in addition to a first lock mechanism, and to facilitate locking operation and unlocking operation of the second lock mechanism. <P>SOLUTION: A vertically rotatable lighting cover 24 is installed between a covering position that covers the lower side of a lighting fixture 21 mounted on a car ceiling and an uncovering position that uncovers the lower side of the lighting fixture 21. Then, a first lock mechanism 25 and a second lock mechanism 26 are installed that lock the lighting cover 24 at the covering position. The second lock mechanism 26 is equipped with a slide member which is slidable with a keyhole-shaped slot 39 formed having a small diameter part and a large diameter part and with a lock pin 34 which, when inserted in the large diameter part, can slip out therefrom by rotating the lighting cover 24 to the uncovering position and which, when inserted in the small diameter part, regulates the rotation of the lighting cover 24 to the uncovering position. <P>COPYRIGHT: (C)2012,JPO&INPIT |
