Methods and apparatus for providing led-based spotlight illumination in stage lighting applications

A technology of LED light source and LED module, which is applied in the field of lighting and can solve problems such as reduction of degree
CN101932873AInactive Publication Date: 2010-12-29PHILIPS SOLID STATE LIGHTING SOLUTIONS
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
PHILIPS SOLID STATE LIGHTING SOLUTIONS
Publication Date
2010-12-29
Estimated Expiration
Not applicable · inactive patent

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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.
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Description

technical field

[0001] The present invention relates generally to lighting, and in particular to the implementation and control of LED-based lighting devices for stage lighting applications. Background technique

[0002] Lighting devices have been used for many years for set and stage lighting in a variety of theatrical, television and architectural lighting applications. Typically, each lighting fixture includes a fluorescent lamp mounted adjacent to a concave reflector that reflects light through a lens assembly to project a beam of light toward a theater stage or the like. Color filters may be mounted at the front of the lighting device to transmit selected wavelengths of light emitted by the lamp while absorbing and / or reflecting other wavelengths. This provides a specific spectral composition for the projected light beam.

[0003] The color filters (also commonly referred to as "gels") used in such lighting devices typically comprise glass or plastic films such as pol...

Claims

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