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
US12345936B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Sep 13, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A building control device includes a printed circuit board including control circuitry for controlling at least part of the building control device. An LCD display is operatively coupled to the printed circuit board and is controlled at least in part by the control circuitry of the printed circuit board. A plurality of LEDs are operatively coupled to the printed circuit board and are controlled at least in part by the control circuitry of the printed circuit board. An opaque plate defines an at least translucent arc-shaped region that extends around at least part of the LCD display. A light guide is situated behind the opaque plate and is configured to be illuminated by the plurality of LEDs such that light from the light guide is visible through the at least translucent arc-shaped region of the opaque plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.