A RETROFIT LIGHT EMITTING DIODE, LED, TUBE FOR CONNECTING TO AN ELECTRONIC BALLAST, AS WELL AS A CORRESPONDING LIGHTING SYSTEM AND A METHOD

A retrofit LED tube for connection to an electronic ballast, said retrofit LED tube comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage and for driving said LED array based on said received AC supply voltage, a filament circu...

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Bibliographische Detailangaben
Hauptverfasser:	TAO, Haimin, WANG, Yi, CVORIC, Dalibor
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HEATING LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MECHANICAL ENGINEERING NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE WEAPONS
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Beschreibung
Zusammenfassung:	A retrofit LED tube for connection to an electronic ballast, said retrofit LED tube comprising an LED array for emitting light, an alternating current, AC, LED driver arranged for receiving an AC supply voltage and for driving said LED array based on said received AC supply voltage, a filament circuit for supporting a filament current circulating back to said electronic ballast for enabling lamp recognition by said electronic ballast during a lamp recognition phase, and a lamp current to said AC LED driver for driving said LED array during a steady-state phase, and comprising a filament enhancement circuit arranged to reduce at least one of said filament current and said lamp current flowing through said filament circuit, during said steady-state phase.