US 11,744,190 B2
Horticultural lighting device for sustaining indoor plant growth as well as corresponding horticultural lighting system and method
Donald Bouton Ellingham, Jr., Waltham, MA (US); James M. Gaines, Lexington, MA (US); Kai Han, Shanghai (CN); Chuan Yuan, Shanghai (CN); and Yuefeng Zhang, Buffalo Grove, IL (US)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/59,705
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed May 20, 2019, PCT No. PCT/EP2019/062930
§ 371(c)(1), (2) Date Nov. 30, 2020,
PCT Pub. No. WO2019/228838, PCT Pub. Date Dec. 5, 2019.
Claims priority of application No. PCT/CN2018/089257 (WO), filed on May 31, 2018; application No. 18183949 (EP), filed on Jul. 17, 2018; and application No. 19161866 (EP), filed on Mar. 11, 2019.
Prior Publication US 2021/0212267 A1, Jul. 15, 2021
Int. Cl. A01G 7/04 (2006.01); H05B 47/115 (2020.01); H05B 45/20 (2020.01); H05B 45/46 (2020.01)
CPC A01G 7/045 (2013.01) [H05B 45/20 (2020.01); H05B 45/46 (2020.01); H05B 47/115 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A horticultural lighting device for sustaining indoor plant growth, wherein said horticultural lighting device comprises:
a lighting unit arranged for providing illumination in accordance with one of a plurality of modi, wherein, for each modus, said lighting unit is arranged for illuminating in different electromagnetic spectrums;
a power unit arranged for receiving a mains supply voltage and for providing power to said lighting unit;
a control unit arranged for detecting interruptions in the received AC mains supply voltage and for switching to a next modus within said plurality of modi for said lighting unit triggered by detected interruptions, wherein the next modus is selected based on a duration of at least one detected interruption of the detected interruptions or a particular sequence of the detected interruptions in the received AC mains supply voltage.