TRAFFIC LIGHT SECTION Russian patent published in 2005 - IPC

FIELD: light-signaling engineering.

SUBSTANCE: section of traffic light signal has case provided with sun-proof visor, optic unit mounted inside case. Optic unit has light source and light filter. Surface of color light filter-diffuser is made in form of ruled surface which has to be the surface formed by parallel movement of straight line being perpendicular to vertical plane crossing axis of radiation of traffic light along preset continuous guide line. Guideline is preset in such a manner that any tangent line inclines at the direction being opposite of radiation of traffic light section. Angle of inclination of tangent line is preset in such a way that beams from external light sources if not being caught sun-proof visor reflect from ruled surface at angle being bigger or equal to zero.

EFFECT: excluded phantom effect.

4 cl, 16 dwg