| 摘要 |
<p>The system has a seat or slot (6) provided in the visible part of a unit e.g. step, skirting board, handrail, end piece and corner, and a light source (7) powered accordingly. The seat presents a cross-section shape tapered towards an open side of a slot. The light source is inserted into the slot and is retained by tapered walls. An independent claim is also included for the tread nosing.</p> |
