| 摘要 |
PURPOSE:To reduce energy consumption and improve maintenance by dividing and branching the outgoing end side of an optical fiber bundle connected to a light source at one end, connecting the outgoing ends to multi-branch light guides provided above seats, and controlling the outgoing light from the outgoing ends with the control signal. CONSTITUTION:The incidence end 2a of an optical fiber bundle 2 is connected to a light source 1, the outgoing end 2b is divided and branched. The branched outgoing ends 2b are connected to multi-branch light guides arranged above seats 4. Outgoing light control means 3 are provided at the outgoing ends 2b, and the outgoing light is controlled by the control signal. Each outgoing light control means 3 is constituted of a liquid crystal shutter, for example, and the outgoing light may be interrupted or transmitted via the switch action at the seat. |
