| 摘要 |
A hazard warning device comprises a hollow cylindrical post 1, means such as a clip 2 for mounting a battery 3 within the post 1, a lens 4 for releasable mounting on top of the post 1 and a lamp bulb holder 5 for making electrical contact with the terminals 23 and 24 of the battery 3 so as to illuminate a bulb 21 in the holder 5. The post 1 is provided near its top end with a circumferential groove 14 to receive a corresponding circumferential tooth 13 on the internal surface of the lens 4 which enables the lens 4 to be lockably mounted on the post 1. The bulb holder 5 comprises a plastics disc 18 in which are mounted five terminal studs 19a, b, c, d and e and a lamp bulb socket 20. The holder 5 so can be rotated with the lens 4 when this is axially rotated on the post 1 to cause the studs 19a, b, c or d to make and break contact with the battery terminal 24 to illuminate and turn off the bulb 21. The post has slots to support road barriers. An extractor tool 31 which embraces the post 1 enables the lens 4 to be forced off the post for maintenance. <IMAGE> |
