US Patent No. 9,967,940

SYSTEMS AND METHODS FOR ACTIVE THERMAL MANAGEMENT


Patent No. 9,967,940
Issue Date May 08, 2018
Title Systems And Methods For Active Thermal Management
Inventorship Thomas Lawrence Zampini, II, Concord, MA (US)
Charles Bernard Valois, Westford, MA (US)
Assignee Integrated Illumination Systems, Inc., Morris, CT (US)

Claim of US Patent No. 9,967,940

1. A method for managing intensity to a light source responsive to temperature of the light source, the method comprising:(a) intercepting, by an active thermal management device, prior to input to the light source of a lighting fixture, an incoming signal from a dimmer, the incoming signal comprising a plurality of portions, each of the plurality of portions comprising a duration of a duty cycle identifying a first intensity for the light source, a first portion of the plurality of portions comprising an instruction for assigning a status of one of a master or a slave to the light source;
(b) measuring, by the active thermal management device, a temperature of an enclosure of the lighting fixture to determine the temperature of the light source;
(c) determining, by the active thermal management device, a second intensity less than the first intensity identified by the incoming signal from the dimmer, the second intensity determined from a function of both the first intensity identified by the incoming signal from the dimmer and the temperature of the light source determined from the measured temperature of the enclosure of the lighting fixture;
(d) modifying, by the active thermal management device responsive to the determination and prior to input to the light source, the duty cycle of the each of the plurality of portions of the incoming signal to provide a second signal identifying the second intensity at which to emit light, the second intensity less than the first intensity, while maintaining the first portion comprising the instruction for assigning the status of one of the master or the slave to the light source; and
(e) outputting, by the active thermal management device responsive to the determination, the second signal as input to the light source, the second signal identifying both the second intensity less than the first intensity and assigning the status of one of the master or the slave to the light source based on the first portion of the incoming signal that is maintained in the second signal.