Writing tool, particularly pen, writing device, lead pen, spring pin, roller ball pen, ball pen, sticking pin or fine writer, for compass, has lighting unit that is attached directly at or in lead
摘要
<p>The writing tool has a lighting unit that is attached directly at or in a lead. The lead is lighted or automatically illuminated or emits the light. The light is supplied by one or multiple light conductors or light channels at a point of the pen.</p>
