Modular LED strip lighting apparatus

摘要

A LED based lighting apparatus is disclosed. The light engine used in the lighting apparatus may use a multi-layer metal core printed circuit board and have a plurality of LED groups that are independently controllable by a control unit. The power supply input and return paths connected to each LED group may be implemented on different layers to allow a compact footprint that may be used with traditional fluorescent encasements with relatively little modification.

主权项

1. A light engine comprising:
a printed circuit board; a plurality of LED groups on said printed circuit board coupled between a power supply input and a respective one of a plurality of return paths associated with said LED group; each of said LED groups comprising a plurality of LED sets coupled in parallel; each of said LED sets comprising a plurality of LEDs coupled in series; wherein a first one of said LED groups is comprised of at least a subset of LEDs having a first colour temperature, and a second one of said LED groups is comprised of at least a subset of LEDs having a second colour temperature different from said first colour temperature; wherein at least one of said LEDs having a first colour temperature from said first LED group and at least one of said LEDs having a second colour temperature from said second LED group are intertwined on said light engine.