Full color parapet lamp for road or bridge
US6234647A · kind A · utility
3Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a tubular lamp, particularly relates to a high-intensity parapet lamp for road or bridge, which can display various colors and is controlled by computer program. The cavity of the lamp is sealed with soldered illuminants and light-reflecting circuit board; the power supply wires pass through the inner tube and the ends of the power supply wires are connected to multi-contact connector assemblies. The lamp is lit up at night and is controlled by computer program to produce a flowing effect which can indicate the direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.