US 12,013,090 B2
Lighting device for providing a natural lighting effect
Hendrikus Johan Adrie De Vries, Veldhoven (NL); Martinus Hermanus Wilhelmus Maria Van Delden, Venlo (NL); and Dragan Sekulovski, Eindhoven (NL)
Assigned to SIGNIFY HOLDING, B.V., Eindhoven (NL)
Appl. No. 18/023,929
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Sep. 13, 2021, PCT No. PCT/EP2021/075109
§ 371(c)(1), (2) Date Feb. 28, 2023,
PCT Pub. No. WO2022/058284, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 20196669 (EP), filed on Sep. 17, 2020.
Prior Publication US 2024/0011611 A1, Jan. 11, 2024
Int. Cl. F21S 10/02 (2006.01); F21Y 105/12 (2016.01); F21Y 115/10 (2016.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/30 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01)
CPC F21S 10/023 (2013.01) [H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/30 (2020.01); H05B 47/11 (2020.01); H05B 47/16 (2020.01); F21Y 2105/12 (2016.08); F21Y 2115/10 (2016.08)] 13 Claims
OG exemplary drawing
 
1. A lighting device for providing a natural lighting effect, comprising:
at least three LED chains, each LED chain including a plurality of LED light sources separated from each other along the LED chain, wherein the LED light sources of each LED chain are electrically connected to a common drive signal line,
wherein the light sources of said at least three LED chains are substantially evenly and non-symmetrically distributed over a light area, and
a controller configured to apply a different drive signal to each drive signal line, wherein each drive signal is time varying so as to cause a time variation of at least one property of light emitted from the LED light sources.