US 12,144,075 B2
Lighting device which receives power from an external power supply
Wei Li, Shanghai (CN); Yuanqiang Liu, Shanghai (CN); Meiping Mao, Shanghai (CN); Yuan Xin Chen, Shanghai (CN); and Ru Yu Li, Shanghai (CN)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/915,250
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Mar. 29, 2021, PCT No. PCT/EP2021/058144
§ 371(c)(1), (2) Date Sep. 28, 2022,
PCT Pub. No. WO2021/198173, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. PCT/CN2020/083048 (WO), filed on Apr. 2, 2020; and application No. 20179437 (EP), filed on Jun. 11, 2020.
Prior Publication US 2023/0125816 A1, Apr. 27, 2023
Int. Cl. H05B 45/18 (2020.01); H02M 1/32 (2007.01); H05B 45/37 (2020.01)
CPC H05B 45/18 (2020.01) [H02M 1/327 (2021.05); H05B 45/37 (2020.01)] 15 Claims
OG exemplary drawing
 
1. A lighting device comprising:
an input adapted to connect to an external power supply;
a light emitting load to be powered by the external power supply;
a secondary load to be powered by the external power supply; and
a controller configured to:
receive a temperature measurement, which temperature measurement is related to a temperature of the external power supply;
activate the secondary load, and allow the secondary load to be powered by the external power supply, when the temperature measurement is below a threshold,
wherein the lighting device is configured to:
work in a high-power regime, by activating the secondary load, so as to provide a heavier load for the external power supply when the temperature measurement is below a threshold; and
work in a low-power regime, by deactivating the secondary load, so as to provide a less heavy load for the external power supply when the temperature measurement is above the threshold.