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EP 4 062 099 A1

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(43) Date of publication: 28.09.2022 Bulletin 2022/39 (21) Application number: 20790247.9 (22) Date of filing: 09.10.2020

(51) International Patent Classification (IPC):  F21V 5/08(2006.01) F21V 5/02(2006.01) F21Y 103/10(2016.01) F21Y 115/10(2016.01) F21S 4/28(2016.01) F21W 131/405(2006.01) F21Y 113/20(2016.01) (52) Cooperative Patent Classification (CPC): F21V 5/08; F21W 2131/405; F21S 4/28; F21Y 2115/10; F21Y 2103/10; F21Y 2113/20; F21V 5/02 (86) International application number: PCT/EP2020/078425 (87) International publication number: WO 2021/099026 (27.05.2021 Gazette 2021/21)

(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 (30) Priority: 20.11.2019 CN 201911147299 (71) Applicants: Self Electronics Co., Ltd. Ningbo City, Zhejiang 315103 (CN) SELF ELECTRONICS Germany GmbH 51149 Köln (DE) Lin, Wanjiong Ningbo City, Zhejiang 315103 (CN)

(72) Inventors: FANG, Lei Ningbo, Zhejiang 315103 (CN) ZHAO, Minghai Ningbo, Zhejiang 315103 (CN) HE, Zuping Ningbo, Zhejiang 315103 (CN) (74) Representative: 2K Patentanwälte Blasberg Kewitz & Reichel  Partnerschaft mbB Schumannstrasse 27 60325 Frankfurt am Main 60325 Frankfurt am Main (DE)