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EP 3 746 701 A1

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(43) Date of publication: 09.12.2020 Bulletin 2020/50 (21) Application number: 18902948.1 (22) Date of filing: 29.01.2018

(51) International Patent Classification (IPC):  F21V 21/002(2006.01) F21V 19/00(2006.01) (86) International application number: PCT/CN2018/074450 (87) International publication number: WO 2019/144402 (01.08.2019 Gazette 2019/31)

(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: MA MD TN (71) Applicant: Tridonic GmbH & Co. KG 6851 Dornbirn (AT)	(72) Inventors: YANG, Canbang Shenzhen, Guangdong 518109 (CN) XU, Jian Shenzhen, Guangdong 518101 (CN) LU, Yuan Shenzhen, Guangdong 518109 (CN) (74) Representative: Kiwit, Benedikt  Mitscherlich PartmbB Patent- und Rechtsanwälte Sonnenstraße 33 80331 München 80331 München (DE)