Solar-powered lighting system
US4484104A · kind A · utility
38Cited by
9References
18Claims
0Family size
Inventor
Key dates
| Filing date | Jun 1, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Jun 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/812
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solar-powered lighting system suitable for signs or hoardings (10), navigation beacons or as an emergency supply for hotels, cinemas, hospitals or other services. The system incorporates solar cell arrays (17) which generate electricity which is stored in batteries (22). A sensing circuit (14) selectively connects the batteries (22) to lights (14). A timing/switching circuit (32), (32a) may be provided to selectively connect the lights (14) to a mains supply (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.