Strobe warning light
US5475361A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1993 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | May 20, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B5/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The reflector of a strobe warning light for mounting on a wall has reflective surfaces for enhancing the amount of light projected into a sector defined by a horizontal reference plane and a vertical reference plane that intersect at the lamp axis, the lamp being oriented horizontally. Two wing-like reflective surfaces reflect light into a zone of the sector from 10 degrees to 40 degrees from the horizontal reference plane. Two other wing-like reflectors that adjoin the first two reflect light generally parallel to the lamp axis in opposite directions to increase the light intensity as the light is viewed from the sides. The wing-like reflective surfaces are located in diagonally opposite quadrants with respect to the horizontal reference plane and a plane at the lamp centerline perpendicular to the lamp axis, thereby leaving openings in the remaining two quadrants. A concave reflective surface behind the vertical reference plane reflects light away from the wall. A lens over the lamp has a concave reflective surface that reflects light generally downwardly to enhance the light output in the 70 to 90 degree range from the horizontal reference plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.