| 摘要 |
A photoluminescent track 31 for an emergency lighting system comprises an elongate holder 33 and an elongate photoluminescent insert 35 received in a channel 37 extending lengthwise of the holder 33. The insert 35 is a push-fit in the channel 37 and is retained by engagement of opposed inwardly directed lips 45,47 at the mouth of the channel 37 with the upper side edges of the insert 35 so that the upper surface of the insert 35 is exposed within the opening. |
