A signalling or lighting apparatus comprising at least one light source defining a main emission direction, together with at least one elongate light guide, one end of which is lit by the light source, the light guide being adapted to diffuse the light transversely along its length. At least in the vicinity...http://www.google.com.au/patents/US7452114?utm_source=gb-gplus-sharePatent US7452114 - Signalling or lighting apparatus, in particular for a motor vehicle