Solar-powered illuminated reflector
US4668120A · kind A · utility
Inventor
Key dates
| Filing date | Oct 21, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Oct 21, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S9/037
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A self-contained solar-powered illuminated reflector provides improved visibility at a distance as a traffic safety aid. A housing adapted to be secured to a highway or alternatively, to a vertical wall, encloses a reflector for reflecting light in a predetermined direction toward highway traffic, a light source, a battery and a photovoltaic system. The housing includes a window member for transmitting light outward from the light source in the predetermined direction toward highway or pedestrian traffic. An optical lightguide between the light source and the window member focuses the light from the light source so that the visible effectiveness of the light source is optimized. Circuitry is provided for selectively enabling the operation of the light source for minimizing the power requirement to extend the useful life performance of the traffic marker. The illuminated reflector is arranged to provide maintenance free and fail-safe operation over its useful life.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.