(19)

(11)

EP 4 335 244 A1

(12)

(43) Date of publication: 13.03.2024 Bulletin 2024/11 (21) Application number: 21945411.3 (22) Date of filing: 15.06.2021

(51) International Patent Classification (IPC):  H05B(2006.01) (52) Cooperative Patent Classification (CPC): H05B 47/18; H05B 45/56; H05B 47/183 (86) International application number: PCT/CN2021/100065 (87) International publication number: WO 2022/261818 (22.12.2022 Gazette 2022/51)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Tridonic GmbH & Co. KG 6851 Dornbirn (AT)	(72) Inventors: LIU, Yaping Shenzhen, Guangdong 518131 (CN) LI, Xinhai Shenzhen, Guangdong 518131 (CN) (74) Representative: Rupp, Christian  Mitscherlich PartmbB Patent- und Rechtsanwälte Karlstraße 7 80333 München 80333 München (DE)