Solid state lighting apparatuses and related methods

摘要

Solid state lighting apparatuses and related methods are described. In certain embodiments, a solid state lighting apparatus adapted to operate with alternating current (AC) received from an AC power source is provided. The lighting apparatus can include a substrate and an array of solid state light emitters arranged on or supported by the substrate. Multiple solid state light emitter sets of the array can be arranged to be activated and/or deactivated at different times relative to one another during a portion of an AC cycle. The lighting apparatus can also include at least one reflective structure arranged between one or more solid state light emitters and at least one driver circuit component, to reduce or eliminate absorption by the driver circuit component(s) of light generated by the solid state light emitter(s).

主权项

1. A solid state lighting apparatus adapted to operate with alternating current (AC) received from an AC power source, the lighting apparatus comprising:
a substrate; an array of solid state light emitters arranged on or supported by he substrate, the array of solid state light emitters comprising a plurality of electrically mutually exclusive solid state light emitter sets each comprising multiple solid state light emitters, wherein at least two different solid state light emitter sets of the plurality of electrically mutually exclusive solid state light emitter sets are arranged to be activated and/or deactivated at different times relative to one another during at least a positive portion of an AC cycle; at least one driver circuit component arranged on or over the substrate and arranged to drive the array of solid state light emitters; and at least one reflective structure positioned between one or more solid state light emitters of the array of solid state light emitters and the at least one driver circuit component and arranged to reduce or eliminate absorption by the at least one driver circuit component of light generated by the one or more solid state light emitters, wherein the at least one reflective structure comprises at least one of the following features (a) or (b): (a) the at least one reflective structure is arranged over and in contact with at least a portion of the at least one driver circuit component, or (b) the at least one reflective structure comprises at least one raised element that is adhered to or deposited on a first face of the substrate and has a height exceeding a height of at least one solid state light emitter of the array of solid state light emitters; wherein the lighting apparatus is devoid of any switched-mode power supply providing AC to DC conversion utility and is arranged in electrical communication between the AC power source and the array of solid state light emitters.