A LED LIGHT SOURCE FILAMENT ARRANGEMENT COMPRISING BLUE AND RED LEDS

Abstract

A LED light source filament arrangement (1) configured to, in operation, emit LED filament light (2), the LED light source filament (1) arrangement comprising a first plurality of LED light sources (3) configured to, in operation, emit first LED light source light (4), the first LED light source light comprising blue LED light source light, a second plurality of LED light sources (5) configured to, in operation, emit second LED light source light (6), the second LED light source light comprising red LED light source light, and a luminescent layer (7) covering at least a part of the first plurality of LED light sources (3) and at least a part of the second plurality of LED light sources (5), the luminescent layer (7) being configured to convert at least 88% of the blue LED light source light (4) into converted light (8), the converted light (8) being one or more of green and yellow light, and the second plurality of LED light sources (5) being arranged in a successional configuration without any LED light sources configured to, in operation, emit LED light source light of other colors than red being provided in the succession of the LED light sources of the second plurality of LED light sources (5).

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