METHODS AND APPARATUS FOR PROVIDING LED-BASED SPOTLIGHT ILLUMINATION IN STAGE LIGHTING APPLICATIONS
First Claim
1. A modular lighting fixture for providing theatrical illumination, the lighting fixture comprising:
- an essentially cylindrically-shaped housing, the housing including at least one first opening for providing an air path through the lighting fixture;
an LED-based lighting assembly disposed in the housing, the LED-based lighting assembly comprising;
an LED module including a plurality of LED light sources having different colors and/or different color temperatures and disposed on a printed circuit board;
at least one first control circuit for controlling the plurality of LED light sources; and
at least one fan for providing a flow of cooling air along the air path through the lighting fixture;
an end unit removably coupled to the housing, the end unit including at least one second opening for providing the air path through the lighting fixture; and
at least one second control circuit disposed in the end unit, the at least one second control circuit electrically coupled to and substantially thermally isolated from the at least one first control circuit, wherein the LED-based lighting assembly is configured to direct the flow of the cooling air toward the at least one first control circuit so as to effectively remove heat generated by at least the at least one first control circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus for providing theatrical illumination. In one example, a modular lighting fixture (300) has an essentially cylindrically-shaped housing (320) including first openings (325) for providing an air path through the lighting fixture. An LED-based lighting assembly (350) is disposed in the housing and comprises an LED module (360) including a plurality of LED light sources (104), a first control circuit (368, 370, 372) for controlling the light sources, and a fan (376) for providing a flow of cooling air along the air path. An end unit (330) is removably coupled to the housing and has second openings (332). A second control circuit (384) is disposed in the end unit, and electrically coupled to and substantially thermally isolated from the first control circuit. The lighting assembly is configured to direct the flow of the cooling air toward the at least one first control circuit so as to effectively remove heat.
100 Citations
26 Claims
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1. A modular lighting fixture for providing theatrical illumination, the lighting fixture comprising:
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an essentially cylindrically-shaped housing, the housing including at least one first opening for providing an air path through the lighting fixture; an LED-based lighting assembly disposed in the housing, the LED-based lighting assembly comprising; an LED module including a plurality of LED light sources having different colors and/or different color temperatures and disposed on a printed circuit board; at least one first control circuit for controlling the plurality of LED light sources; and at least one fan for providing a flow of cooling air along the air path through the lighting fixture; an end unit removably coupled to the housing, the end unit including at least one second opening for providing the air path through the lighting fixture; and at least one second control circuit disposed in the end unit, the at least one second control circuit electrically coupled to and substantially thermally isolated from the at least one first control circuit, wherein the LED-based lighting assembly is configured to direct the flow of the cooling air toward the at least one first control circuit so as to effectively remove heat generated by at least the at least one first control circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for providing theatrical illumination from a lighting fixture including a plurality of LED light sources having different colors and/or color temperatures, the method comprising:
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A) receiving at least one input signal representing a desired output color or color temperature for the illumination; and B) processing the at least one input signal so as to provide at least one control signal representing a lighting command including an n-tuple of channel values, wherein the n-tuple of channel values includes one value for each different color or color temperature of the plurality of LED light sources. - View Dependent Claims (24, 25, 26)
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Specification