(19)

(11)

EP 3 899 378 A1

(12)

(43) Date of publication: 27.10.2021 Bulletin 2021/43 (21) Application number: 19820661.7 (22) Date of filing: 19.12.2019

(51) International Patent Classification (IPC):  F24S 23/79(2018.01) H01L 31/054(2014.01) (52) Cooperative Patent Classification (CPC): G02B 19/0028; H01L 31/0547; H01L 31/0549; H01L 31/0543; F24S 23/12; F24S 23/10; F24S 23/71; F24S 23/79; F24S 23/30; Y02E 10/40; Y02E 10/52 (86) International application number: PCT/IB2019/061109 (87) International publication number: WO 2020/128955 (25.06.2020 Gazette 2020/26)

(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: 20.12.2018 IT 201800020437 (71) Applicant: Trentino Rainbow Energy S.r.l. 38049 Altopiano della Vigolana (TN) (IT)	(72) Inventors: DECARLI, Paolo 38070 Terlago (Trento) (IT) VINCENZI, Donato 44121 Ferrara (IT) TONEZZER, Michele 38049 Vigolo Vattaro (Trento) (IT) (74) Representative: Puggioli, Tommaso  Bugnion S.p.A. Via di Corticella, 87 40128 Bologna 40128 Bologna (IT)