METHODS AND APPARATUS FOR PROVIDING LED-BASED SPOTLIGHT ILLUMINATION IN STAGE LIGHTING APPLICATIONS Russian patent published in 2014 - IPC F21S8/00 F21V29/02 H05B33/08 

FIELD: physics.

SUBSTANCE: in one example, a modular lighting device (300) has an essentially cylindrically-shaped housing (320) including first openings (325) for providing an air path through the lighting device. A LED-based lighting assembly (350) is placed in the housing and has a 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 connected to the housing and has second openings (332). A second control circuit (384) is placed in the end unit and electrically connected to and substantially thermally isolated from the first control circuit. The lighting assembly is configured to direct the flow of cooling air towards said at least one first control circuit so as to effectively remove heat.

EFFECT: high reliability and improved performance of the lighting device.

14 cl, 12 dwg