Patent ID: 9131557
Filing Date: 2015-09-08
Classification: F21K,F21S,F21V,F21W,F21Y,H05B,Y02B

Abstract:
1. An LED lamp fitted within a closed legacy light fitting, the LED lamp for fitting into said legacy light fitting having a screw-in socket designed for rotary insertion of a bulb, the LED lamp comprising a plurality of light emitting diodes arranged over a surface of the lamp, the lamp being rotatably connected via a snap-in connection to an independently rotatable screw-in adaptor for insertion into the screw-in socket, the independently rotatable electrical connection being rotatable independently of the lamp by direct application of rotation to make an electrical connection to said socket, the legacy light fitting being insufficiently sized to allow rotation therein of the LED lamp, the LED lamp comprising a plurality of light emitting diodes over a surface, a heat sink located within said closed legacy light fitting and thermally coupled to said surface and a fan, within said closed light fitting for driving cool air over said heat sink, said fan configured to draw said cool air from a first hole inserted in said closed fitting and leading to said LED lamp, and to drive said air past said heat sink within said closed light fitting to a second hole inserted in said closed light fitting, the lamp further comprising a detection mechanism, the detection mechanism comprising a voltage detector configured to detect a failure of a light-emitting diode, and at said detection, carry out active switching to insert itself to take a voltage drop equivalent of one light emitting diode at the place of said failed light emitting diode, thereby to maintain pre-existing voltage conditions at respective remaining diodes.