Lighting device, a method of controlling the same, for selectively emitting light along or against traffic direction
US9310055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2013 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Jul 5, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.