| 摘要 |
<p>A fail-safe lighting apparatus, in particular for street lighting, and its use. The use of a sensor to determine the failure of a component in a lighting assembly. A method whereby a signal transmitted to a remote computer is monitored and maintenance of a lighting apparatus is conducted only when the signal indicates failure of a component. In the illustrated embodiment, a lighting apparatus (1) comprises a first lamp assembly (2) with a first lamp (4) and a reflector (5), and a second lamp assembly (3) with a second lamp (7) and a reflector (8). A spring (10) urges the second lamp assembly (3) into a lighting position. In use, the first lamp assembly (2) is positioned in a lighting position by the use of a solenoid (6). When the first lamp (4) fails, the solenoid is activated allowing the first (2) and second (3) lamp assemblies to rotate about the fulcrum (9), thus displacing the first lamp assembly (2) and moving the second lamp assembly (3) into a lighting position.</p> |
