| 摘要 |
PURPOSE: To eliminate the need of preceding connecting work by wiring in advance various kinds of electric wires on a ceiling in the longitudinal directions of the housings of lighting fixtures. CONSTITUTION: A plurality of kinds of electric wires 18 and 19 are laid on a ceiling fitted with lighting fixtures 1 regularly arranged in the longitudinal and transversal directions in the longitudinal directions of the housings of the fixtures 1 and the light fixtures 1 which are arranged in parallel with each other in the vicinities of main electric lines 4 are connected to the main electric lines 4 with headers and the lighting fixture rows are connected to each other with connectors 21 and 22 which are used for connecting electric wires 18 and 19 to each other. Therefore, such other electric apparatuses as a smoke detector 2, a loudspeaker 3, etc., are connected to exclusively used electric wires 18 and 19 wired to nearby lighting fixture rows 1 through the connectors 21 and 22. |
