Building control device with a light guide configured for uniformly illuminating a graphical symbol that is visible to a user of the building control device
US12282187B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2023 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Sep 13, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A building control device includes a printed circuit board (PCB) assembly with a controller. A lighting assembly is operatively coupled to the PCB and is controlled by the controller. The lighting assembly includes a light guide that extends around a periphery of an interposing region. The light guide having a front face and one or more light sources optically coupled to the light guide such that light provided by the one or more light sources enters the light guide and is distributed to the front face of the light guide to provide a diffuse light output. A cover forms at least part of a front face of the building control device and includes a transparent region in registration with at least part of the front face of the light guide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.