Patent ID: 9420644
Filing Date: 2016-08-16
CPC Classification: F21K,F21V,F21Y,H05B,Y02B

Claim Text:
1. An LED retrofit lamp comprising: means for illuminating through an optically transmissive envelope; a lamp base comprising metal and coupled to the illuminating means and defining input terminals for conducting an input current that flows between the terminals when the lamp base is in substantial direct thermal communication with, and electrically connected to, a socket that is connected to a triac dimmer module adapted to phase-cut an AC voltage waveform according to a controlled dimmer phase angle, wherein the dimmer module has a holding current requirement for current conduction, and wherein at least a portion of the lamp base defines a form factor that complies with ANSI C81.61-2009 standards for a form factor type selected from the group consisting of: E10, E11, E12, E14, E17, E26, E27, BA9S, B15D, B22, B22D, BA15D, BA15S, SC, GU10, and GU24; a network of LEDs disposed in the illuminating means; a first linear regulator configured in series with an LED network to control an LED current in the LED network, wherein the LED current flows between the input terminals; a second linear regulator configured to regulate a bleeder current that flows between the input terminals and in parallel with the LED current to a bleeder current set point, wherein the bleeder current set point: wherein the holding current set point satisfies the holding current requirement over at least a portion of the AC waveform; and, an integral lamp driver module packaged into a space defined between an interior of the lamp base and an exterior of the illuminating means, the driver module comprising the first linear regulator and the second linear regulator, wherein at least one of the first and second linear regulators are thermally coupled in substantial direct thermal communication with at least a portion of the lamp base.