Building projector for use in construction site, has pivoting mechanism for pivoting projection unit around rotational axis relative to base, where rotational axis runs through crossing point or rotational axis coincides with crossing line

摘要

The projector (100) has a projection unit (10) for radiating light beams in a visible or invisible wave band, where the light beams are intersected in a crossing point or a crossing line. The projection unit is fastened to a base (2), and a reversibly deactivatable pivoting mechanism (30) is provided for pivoting the projection unit around a rotational axis relative to the base, where the rotational axis runs through the crossing point or the rotational axis coincides with the crossing line. A clamping device (20) detachable fastens the projector to a carrier.