Patent ID: 8716940
Filing Date: 2014-05-06
Classification: F21V,F21W

Abstract:
1. A lighting device, comprising: a lamp that emits light; a housing, holding at least said lamp; an electrically controllable variable fan, coupled to said housing, and cooling an inside of said housing; a controller, which receives information indicative of an amount of sound in an area of said housing held within said housing and which is programmed to determine a first amount of sound in said area of said housing, and to control said fan based on said first amount of sound in said area of said housing between a first amount of output of said fan which occurs when the first amount of sound in the area of said housing is lower, and a second amount of output of said fan, which produces more air output from said fan and more noise from said fan, which occurs when the amount of sound in the area of said housing is higher, wherein said controller detects an overtemperature condition in the housing in which a temperature within the housing is higher than a specified amount, and automatically increases an output of said fan independent of said amount of sound received, wherein said controller also receives commands sent to said controller over a link from a remote controller remote from said controller, where said commands define an operation of said lamp and are used by said controller to operate said lamp, and where said controller also controls said output of said fan based on said commands.