US 2012/0074869 A1 · Multimode controller for led light sources

Abstract

A multimode controller for LED light sources, especially sources in warning lights, such as light bars, provides for a temporary increase in brightness from the LEDs by providing a burst mode, in addition to a flashing mode and a continuous mode. The modes are carried out by programming a microprocessor which receives signals from control switches, which may be pressed and released. The programming precludes the burst mode to continue for longer than a predetermined time, thereby ensuring that the power does not exceed the LEDs damage threshold characteristic. The controller thereby provides for temporary bursting to make visible the region in front of or around an emergency vehicle for a short period of time without the need for light sources dedicated solely to the high intensity brightness mode of operation of a warning light system.

Claims9

Dependent claims

A multimode controller for one or more LED light sources which comprises:

a source of power,
means for selectively operating said one or more LED light sources by electrically pulsing continuously or intermittently to provide at least a first mode of operation at less than full power from said source, and
means for operating said one or more LED light sources temporarily in a second burst mode to continuously draw greater power than said first mode from said power source during said second burst mode which enables said one or more LED light sources to provide a burst of illumination greater in brightness than provided in said first mode, said greater power draw being for a period of time which does not exceed a power damage threshold level characteristic of said one or more LED light sources, whereby to facilitate control of a warning light system of an emergency vehicle which contains said LED light sources.

Dependencies are inferred from the claim text.

Multimode controller for led light sources

Life of this patent

Multimode controller for led light sources

Life of this patent

Abstract

Claims9