Combined edgelit signage and illumination
US9589487B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2015 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Dec 22, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F2013/222
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system can combine edgelit signage and edgelit illumination. The system can comprise two edgelit lightguide sections, one supporting signage and another supporting illumination. The lightguide section that supports signage can comprise a backlit face inscribed with text or graphics conveying an emergency message. The lightguide section that supports illumination can comprise a face patterned with features that release light, for example for emergency illumination. The two lightguide sections can be two areas of a single edgelit lightguide. The two lightguide sections can alternatively formed from two separate lightguides. In some examples, one or more illumination lightguide sections can be configured as a trim plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.