Hybrid gas discharge lamp-LED lighting system

摘要

A lighting system and method combine at least one LED and at least one gas discharge lamp within a common housing. The lighting system includes a control system to dependently operate each LED and each gas discharge lamp during overlapping, non-identical periods of time. In at least one embodiment, the control system can provide light output by activating LEDs during gas discharge preheating operations and thus extend the useful life of each gas discharge lamp. When dimming the lighting system, the control system can reduce current to the gas discharge lamps and one or more gas discharge lamps can be phased out as dimming levels decrease. As dimming levels decrease, one or more of the LEDs can be activated or groups of LEDs can be phased in to replace the light output of the dimmed gas discharge lamps. Thus, the lighting system can reduce power consumption at low dimming levels.

主权项

1. A hybrid gas discharge lamp-light emitting diode (LED) lighting system comprising:
a housing; an LED retained by the housing; a gas discharge lamp retained by the housing; and a control system coupled to the LED and the gas discharge lamp to dependently operate the LED and gas discharge lamp during overlapping, non-identical periods of time to control light intensity to (A) dim at least one of (i) the LED and (ii) the gas discharge lamp at a dimming level from 0 to 100% and intermediate dimming levels in response to a signal received by the lighting system and (B) activate the LED while preheating the gas discharge lamp prior to generation of light output from the gas discharge lamp.