Musco Corporation

Andrew J Schembs

David L Blanchard

Myron K Gordin

Alan W Sheldon

Aric D Klyn

Luke C McKee

Chris P Lickiss

Joel D DeBoef

Matthew D Drost

Ross Alan McCombs

Joel D Rozendaal

Timothy A Barker

Kevin D Van Arendonk

Brian P Wan

Bradley W Lepley

As lighting systems age the need for retrofits&#x2014;namely where newer lighting technology is used to replace older or different technology, but where a direct replacement is not possible without some kind of modification to the rest of the lighting system&#x2014;increases. The residential lighting retrofit market is well established with a one-for-one light source replacement approach that is widely embraced; for example, a table lamp with a failed incandescent bulb can be readily replaced with an LED bulb despite the disparate power requirements because of the onboard driver system, and this avoids having to modify the lamp itself, the outlet, incoming power, etc. No such solution exists for specialized lighting systems such as sports and wide area lighting systems. The present invention is directed to such a solution, and one which is cost effective, easy to implement, and customizable to meet the varying site requirements of such specialized systems.

Apparatus method, and system for cost-effective lighting system retrofits including LED luminaires

A self-healing overtemp circuit is described and illustrated comprising a temperature sensing circuit, a voltage sensing circuit, and optionally, a current sensing circuit. The self-healing overtemp circuit is designed to ramp down power in an LED lighting system (or other electrical circuit) in response to a sensed or impending thermal runaway (and optionally, overcurrent) event. Said thermal runaway and overcurrent events may be a result of failure of one or more components (e.g., driver, active cooling means) of the lighting system. The self-healing overtemp circuit further comprises means of restoring power to said LEDs in a manner that avoids (i) a perceivably bright flash of light or (ii) increased risk of component failure.

Self-healing overtemp circuits in LED lighting systems

A system, apparatus, and method for operating one or more drivers of light sources, such as can be used with LED lighting fixtures, wherein main power to the drivers is galvanically isolated from communication functionalities to and from the drivers. In one example, a controller can receive information or send information to the drivers in a galvanically isolated manner. The galvanic isolation can be accomplished in different ways and configurations for high flexibility of design.

Apparatus, method, and system for galvanically isolated control and monitoring of LED drivers

A self-healing overtemp circuit is described and illustrated comprising a temperature sensing circuit, a voltage sensing circuit, and optionally, a current sensing circuit. A lower cost, simplified alternative overtemp circuit is also discussed. The self-healing overtemp circuit is designed to ramp down power in an LED lighting system (or other electrical circuit) in response to a sensed or impending thermal runaway (and optionally, overcurrent) event. Said thermal runaway and overcurrent events may be a result of failure of one or more components (e.g., driver, active cooling means) of the lighting system. The self-healing overtemp circuit further comprises means of restoring power to said LEDs in a manner that avoids (i) a perceivably bright flash of light or (ii) increased risk of component failure.

The present invention generally relates to the field of large area lighting, such as lighting for sport venues. More specifically, some embodiments of the present invention relate to controlling solid state illumination for various applications including sports lighting, architectural lighting, security lighting, parking, general area, interior, larger area and others. Embodiments according to aspects of the current invention monitor lighting circuits with regard to voltage and current, compare readings with stored models, characterize lighting circuits with regard to stored models for voltage and current, and control lighting circuits in accordance with desirable outcomes.

Apparatus, method, and system for LED fixture temperature measurement, control, and calibration

Apparatus, methods, and systems for a novel approach to on-site evaluation and demonstration of illumination schemes to fit the unique needs of a defined area or object. The system provides a versatile method of producing a wide range of illumination schemes from a limited number of components and allows for optional add-on features or replaceable modules to simulate various lighting characteristics from various types of lighting fixtures, including commercially available fixtures or custom fixtures. Methods of wireless control described herein help to achieve the purpose of the mobile lighting evaluation system in that a system operator may evaluate and/or demonstrate illumination schemes from a convenient remote location.

Growing community of inventors

Johnston, IA, United States of America

Andrew J Schembs