发明名称 LED REPLACEMENT LAMP FOR SAFE OPERATION UNDER FAULT CONDITION
摘要 An LED replacement lamp (20) is described. An LED lighting assembly (40) comprising LED lighting elements is electrically connected to filament emulation circuits, connected to electrical contacts at each of two opposite ends (22a, 22b) of an elongated member. The filament emulation circuits (42) each comprise a first resistor circuit (46) and a second resistor circuit (48) connected to first and second electrical contacts (26a, 24a). The first and second resistor circuits (46, 48) are connected to the LED lighting assembly (40) at a common terminal (50). In order to provide an LED replacement lamp for safe operation even in cases of component failure, and if the replacement lamp (20) is used in incorrect wiring configurations, the first and second resistor circuits (46, 48) each comprise a series connection of at least two resistors, in such a way that in case of failure of one of the resistors, the total resistance of the filament emulation circuits (42) remains above a determined resistance value.
申请公布号 WO2015014680(A1) 申请公布日期 2015.02.05
申请号 WO2014EP65772 申请日期 2014.07.23
申请人 KONINKLIJKE PHILIPS N.V. 发明人 TAO, HAIMIN;VAN DIJK, BERNHARD, CHRISTIAAN;SU, BORONG
分类号 H05B33/08 主分类号 H05B33/08
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