US 12,305,871 B2
HVAC controller including LEDs for illuminating a display
Ricardo Alonso Gonzalez, Chihuahua (MX); Karla Cristina Morales, Chihuahua (MX); Pablo David Del Castillo, Chihuahua (MX); and Cesar Alejandro Arzate, Chihuahua (MX)
Assigned to Resideo, LLC, Golden Valley, MN (US)
Appl. No. 17/756,599
Filed by RESIDEO LLC, Golden Valley, MN (US)
PCT Filed Dec. 4, 2020, PCT No. PCT/US2020/063286
§ 371(c)(1), (2) Date May 27, 2022,
PCT Pub. No. WO2021/113624, PCT Pub. Date Jun. 10, 2021.
Claims priority of provisional application 62/943,735, filed on Dec. 4, 2019.
Prior Publication US 2023/0003407 A1, Jan. 5, 2023
Int. Cl. F24F 11/523 (2018.01); F24F 11/52 (2018.01); F24F 11/65 (2018.01); G05D 23/19 (2006.01); H05B 45/20 (2020.01); H05B 47/105 (2020.01)
CPC F24F 11/523 (2018.01) [F24F 11/52 (2018.01); F24F 11/65 (2018.01); G05D 23/1905 (2013.01); H05B 47/105 (2020.01); H05B 45/20 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A device comprising:
an analog display configured to indicate a current temperature and one or more temperature set points;
a set of light-emitting diodes (LEDs);
a projection ring; and
processing circuitry, wherein the processing circuitry is configured to:
control the set of LEDs to emit one or more optical beams to reflect off of the projection ring onto the analog display,
wherein the one or more optical beams are a first color if the current temperature is lower than a set point temperature of the one or more set point temperatures, and
wherein the one or more optical beams are a second color if the current temperature is greater than the set point temperature of the one or more set point temperatures.