초록 ▼

An LED light string employs a plurality of LEDs wired in a series-parallel block. Further, each series-parallel block may be coupled in parallel, the parallel connection coupled across a supply voltage through an electrical interface. LEDs of the light string may comprise either a single color LED o

An LED light string employs a plurality of LEDs wired in a series-parallel block. Further, each series-parallel block may be coupled in parallel, the parallel connection coupled across a supply voltage through an electrical interface. LEDs of the light string may comprise either a single color LED or an LED including multiple sub-dies, each sub-die of a different color. LED series-parallel blocks of the light string may be operated in continuous, periodic or pseudo-random state. The LED light string may provide polarized connectors to couple LED light strings end-to-end and in parallel with the supply voltage. The electrical interface may have one or more parallel outputs and a switch so as to operate multiple LED light strings in continuous, periodic or pseudo-random states. The LED light string may be adapted so as to employ LEDs of different drive voltages in each series section of the series-parallel block. Fiber optic bundles may be coupled to individual LEDs to diffuse LED light output in a predetermined manner.

대표청구항 ▼

[ What is claimed is:] [1.] A light string comprising:a pair of wires;an electrical interface adapted to interface with a standard voltage supply;a plurality of LEDs electrically coupled in series to form at least one series-parallel block,wherein each series-parallel block and the electrical interf

[ What is claimed is:] [1.] A light string comprising:a pair of wires;an electrical interface adapted to interface with a standard voltage supply;a plurality of LEDs electrically coupled in series to form at least one series-parallel block,wherein each series-parallel block and the electrical interface are electrically coupled in parallel between each wire of the pair; andwherein the electrical interface further includes a voltage converter, the voltage converter adapted to convert a first voltage potential of the standard voltage supply to a second voltage potential across a pair of output terminals and between each wire of the pair; andwherein the voltage converter includes a transformer to convert between the first and second voltage potentials, and a ratio of the first and second voltage potentials being matched to an input voltage of the series-parallel block; andwherein the voltage converter includes at least two pairs of output terminals, each pair of output terminals providing the second voltage potential between the corresponding terminals, and the LED light string further comprises at least two pairs of wires, each pair of wires coupled to a respective pair of output terminals and at least one series-parallel block being electrically coupled between each pair of wires.