Ge Lighting Solutions LLC

Dan Mihai

Eden Dubuc

Mohamed Cherif Ghanem

Michel Doss

Christian Auger

Mohammed Ammari

An automated de-icing system for a low power lighting device having a light emitting face. The system includes one or more detectors for detecting conditions under which ice, frost or snow are likely to occur on the light emitting face. The system further includes a heat transfer system for transferring heat to the light emitting face and a controller for receiving data from the detector(s) and determining a likelihood of ice, frost or snow forming on the light emitting face. The controller engages the heat transfer system if the likelihood of ice, frost or snow forming on the light emitting face exceeds a threshold.

Automated de-icing system for low power lighting apparatus

An apparatus and method for testing an independent monitoring circuit in an LED traffic signal is provided. The apparatus comprises: a proof test circuit embedded within the traffic signal; and a proof test device embedded within the traffic signal. The method comprises: via the proof test circuit, simulating a faulty traffic signal state; activating the independent monitoring circuit without switching the traffic signal into a high impedance state; energizing the proof test device; and via the proof test device, communicating externally the current state of the independent monitoring circuit.

Apparatus and method for reducing failures in traffic signals

The system consists of an LED failure detection circuit to provide protection against individual LED catastrophic failure. When LED clusters are arranged in a series-parallel configuration, it is important to detect individual LED failure in order to avoid uncontrolled luminous intensity reduction and/or light uniformity degradation. The circuit compares the voltage levels on LEDs with similar position but situated in different chains. In normal conditions, the voltage levels are substantially similar to one another. In case of individual or multiple LED failure, open or shortcircuit, the circuit sends a signal to the automatic turn off circuit that initiates the lamp forced turn off sequence.

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Pointe-Claire, Canada

Dan Mihai