Abstract: An array of LEDs having output light in different wavelength ranges. A control circuit connected to the array includes a temperature variable resistance component and a switch selectively connecting the component to the array. The control circuit limits the current applied to at least some of the LEDs during initial energization of the LEDs prior to steady-state operation of the LEDs. Variations over time of a color correlated temperature (CCT) of output light of the energized array are reduced.

Abstract: A heat sink for a light emitting diode (LED) lamp assembly includes a core region having a lower end, an upper end, a first region configured to receive an electrical connector, a second region configured to receive at least one LED, and a plurality of longitudinal vanes extending outwardly from the core region, and an upper thermal ring intersecting with and supported by the vanes. The heat sink further includes webs formed between adjacent pairs of the longitudinal vanes, the webs collectively defining an auxiliary thermal ring, the auxiliary thermal ring substantially circumferentially surrounding in spaced relation the core region and disposed, as viewed in the longitudinal direction, between the upper thermal ring and the lower rim. Each of the longitudinal vanes defines a respective thermal notch formed on a vane surface facing an adjacent longitudinal vane, the thermal notch being in confronting relationship to a respective air low aperture.

Abstract: A solid state lighting device (100) including a heat sink (108) stamped from a single sheet (200). The heat sink (108) features a base portion (111) including a central light module receiving region (114) configured to receive a light module (102), a first set of arms (116) extending generally radially outwardly from a perimeter (P) of the base (111), a first set of transverse members (118) intersecting with the first set of arms (116), a first set of air flow apertures (120) defined by the base portion (111), the arms (116), and the transverse members (118), and a first set of radiating plates (122) having adjacent radiating plates separated by gaps. Each one of the radiating plates (122) is bent outwardly and extends transversely from a front face of a first arm (116) or first transverse member (118).

Abstract: An LED lamp (10) includes a heat sink (12), an electrical interconnector (18), an electronics module (16), and a light module (14). The electrical interconnector (18) is disposed in a passageway (32) extending between first and second regions (24, 26) of the heat sink (12) and includes contacts (66) exposed within the first and second regions (24, 26). The electronics module (16) is adapted to be selectively attached within the first region (24) and includes a first electrical connector (64). The light module (14) is adapted to be selectively attached within the second region (26) and includes at least one light emitting diode (LED) (34) and a second electrical connector (38). The first and second electrical connectors (64, 38) are adapted to selectively form an electrical connections to the contacts (66) to provide power from a power source to the LED (34) of the lighting module (14).

Abstract: An LED lamp (10) includes a heat sink (12), an electrical interconnector (18), an electronics module (16), and a light module (14). The electrical interconnector (18) is disposed in a passageway (32) extending between first and second regions (24, 26) of the heat sink (12) and includes contacts (66) exposed within the first and second regions (24, 26). The electronics module (16) is adapted to be selectively attached within the first region (24) and includes a first electrical connector (64). The light module (14) is adapted to be selectively attached within the second region (26) and includes at least one light emitting diode (LED) (34) and a second electrical connector (38). The first and second electrical connectors (64, 38) are adapted to selectively form an electrical connections to the contacts (66) to provide power from a power source to the LED (34) of the lighting module (14).