Lighting device, a method of controlling the same, for selectively emitting light along or against traffic direction

摘要

The invention proposes a lighting device (250). The lighting device (250) for road lighting comprises a lighting module and a control module coupled to the lighting module, and configured to control the lighting module to radiate a first light beam (221) towards a first direction to generate a first lighting pattern on the road surface (B), when a first predetermined condition is satisfied, and to control the lighting module to radiate a second light beam (231) towards a second direction to generate a second lighting pattern on the road surface (A), when a second predetermined condition is satisfied, wherein the first direction is oriented to go along the traffic direction and the second direction is oriented to go opposite the traffic direction.