US 12,241,597 B2
LED filament lamp
Vincent Arnoud Wouters, Helmond (NL); and Bertrand Johan Edward Hontele, Breda (NL)
Assigned to SIGNIFY HOLDING, B.V., Eindhoven (NL)
Appl. No. 17/639,074
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Sep. 2, 2020, PCT No. PCT/EP2020/074466
§ 371(c)(1), (2) Date Feb. 28, 2022,
PCT Pub. No. WO2021/043823, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 19195817 (EP), filed on Sep. 6, 2019; and application No. 19195974 (EP), filed on Sep. 6, 2019.
Prior Publication US 2022/0299172 A1, Sep. 22, 2022
Int. Cl. F21K 9/232 (2016.01); F21K 9/238 (2016.01); F21Y 103/10 (2016.01); F21Y 115/10 (2016.01); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/357 (2020.01)
CPC F21K 9/232 (2016.08) [F21K 9/238 (2016.08); H05B 45/10 (2020.01); H05B 45/20 (2020.01); H05B 45/357 (2020.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08)] 17 Claims
OG exemplary drawing
 
1. A LED filament lamp comprising:
an envelope enclosing a chamber sealed with a stem, wherein the stem extends into said chamber;
a LED filament structure with at least two individually controllable segments;
a controller configured to decode a received control signal into a decoded control signal and control each of the at least two individually controllable segments based on said decoded control signal, wherein the LED filament structure and the controller are arranged within the chamber;
a driver circuit arranged outside the chamber, wherein the driver circuit comprises two powerlines extending through the stem or the envelope for powering the LED filament structure and the controller, wherein the driver circuit is configured to convey said control signal to the controller via one control line extending through the stem or the envelope; and
wherein each segment of the at least two individually controllable segments is configured to output a different lighting characteristic, wherein the lighting characteristic is one of: a color or color temperature.