A safety helmet or head piece having an incident light source disposed on the top or the crown of the helmet or head piece, means for controlling the orientation of the light source, wherein light emanates as a beam substantially vertically and upwardly irrespective of the orientation of the helmet or head piece. The light beam is a single or collimated beam comprised by one or more laser light sources of any colour or colour mix. The light source is mounted on the helmet or head piece so that the beam always emanates in substantially a vertical upwards direction irrespective of the orientation of the helmet or head piece. The invention being directed to the location and rescue of injured workers in poor visibility conditions and to the reduction and prevention of accidents in general.