US 11,839,001 B2
Ceiling fan having an electric lamp which has continuous color temperature control
Christopher Andrew Merck, Vernon, NJ (US); and Zohar Shinar, Demarest, NJ (US)
Assigned to OLIBRA LLC, Cresskill, NJ (US)
Filed by OLIBRA LLC, Cresskill, NJ (US)
Filed on Jun. 21, 2022, as Appl. No. 17/845,229.
Claims priority of provisional application 63/212,733, filed on Jun. 21, 2021.
Prior Publication US 2022/0418065 A1, Dec. 29, 2022
Int. Cl. H05B 45/20 (2020.01); H05B 47/19 (2020.01); H05B 47/115 (2020.01); F21V 33/00 (2006.01)
CPC H05B 45/20 (2020.01) [F21V 33/0096 (2013.01); H05B 47/115 (2020.01); H05B 47/19 (2020.01)] 16 Claims
OG exemplary drawing
 
1. A ceiling fan, comprising:
an electric motor, configured to rotate a set of blades;
an electric lamp, which is an integrated component of the ceiling fan and is co-located beneath said set of blades;
wherein the electric motor and the electric lamp receive electric power from a mains electric socket via a single electric power cord that provides Alternating Current (AC) power to both the electric motor and the electric lamp;
wherein the electric lamp is configured to emit visible light having light warmth at a user-configurable level along a continuous spectrum of light warmth;
wherein the continuous spectrum of light warmth, that can be is emitted by said electric lamp, is a continuous spectrum between a lower-bound value and an upper-bound value;
wherein the electric lamp comprises a first set of LEDs and a second set of LEDs;
wherein the first set of LEDs emits visible light at a first, fixed, light warmth value, which is the lower-bound value of said continuous spectrum of light warmth levels;
wherein the second set of LEDs emits visible light at a second, fixed, light warmth value, which is the upper-bound value of said continuous spectrum of light warmth levels;
wherein the electric lamp further comprises an electric circuit that is configured to blend (i) light emitted by the first set of LEDs with (ii) light emitted by the second set of LEDs;
wherein the electric circuit comprises a triac dimming unit that is configured to dim, separately, a positive half-wave and a negative half-wave of a sinus waveform of the Alternating Current (AC) that drives the first set of LEDs and the second set of LEDs;
wherein the electric circuit changes the Alternating Current (AC) into an electric current having a bi-phasic waveform;
wherein the positive half of said bi-phasic waveform drives only the first set of LEDs via a first half-wave rectifier diode;
wherein the negative half of said bi-phasic waveform drives only the second set of LEDs via a second half-wave rectifier diode.