LED flash light and method for indicating near-end-of-life status of such an LED flash light
US9258871B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 2013 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Dec 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention comprises a method for indicating that an LED flash light for an aircraft such as an anti-collision or beacon or strobe LED light has reached a near-end-of-life status, wherein the LED flash light under normal operational condition within a given time interval generates a predetermined number of normal flashes with the number being one or more than one, e.g. two. The method comprises the steps of determining the actual photometric condition of the LED flash light, and comparing the actual photometric condition to a given condition in a normal flashing mode. If the actual condition deviates from the given condition by more than a predetermined amount, the LED flash light is operated in order to generate within the given time interval one additional near-end-of-life-indicating flash.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.