EP 3855870 B1 20230308 - LED LIGHT SOURCE DEVICE
Title (en)
LED LIGHT SOURCE DEVICE
Title (de)
LED-LICHTQUELLENVORRICHTUNG
Title (fr)
DISPOSITIF DE SOURCE LUMINEUSE À DEL
Publication
Application
Priority
EP 20153197 A 20200122
Abstract (en)
[origin: EP3855870A1] An LED light source device (20) is disclosed, comprising: (a). a plurality of first LED devices (22) configured to emit white light, (b). at least one second LED device (23) configured to emit far red light, and (c). at least one third LED device (24) configured to emit UV light; wherein the plurality of first, second and third LED devices (22, 23, 24) are arranged in a circuit, the circuit comprising first and second terminals (25, 26) for connection with a single current source; the circuit further comprising a plurality of parallel first current paths (30, 30', 30"), each first current path (30) comprising a number of first LED devices (22) connected in series; a first group of first current paths (30) being arranged in series with a second current path (31), comprising at least one second LED device (23); and a second group of first current paths (30') being arranged in series with a third current path (32), comprising at least one third LED device (24).
IPC 8 full level
H05B 45/40 (2020.01)
CPC (source: EP)
H05B 45/40 (2020.01)
Designated contracting state (EPC)
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
DOCDB simple family (publication)
EP 3855870 A1 20210728; EP 3855870 B1 20230308; EP 4207949 A1 20230705
DOCDB simple family (application)
EP 20153197 A 20200122; EP 23158316 A 20200122