Thermal management of LED-based lighting systems
First Claim
1. A light-emitting diode (“
- LED”
) based retrofit apparatus for a light fixture, comprising;
a bracket configured for attachment to the light fixture;
electronics mounted with the bracket, for converting AC line voltage power to low voltage DC power;
a first printed circuit board having one or more LEDs mounted thereon, the first printed circuit board mounting with the bracket such that when the first printed circuit board is supplied with the low voltage DC power, the LEDs mounted on the first printed circuit board primarily emit light upwardly into the light fixture, and the light reflects from one or more surfaces and exits the light fixture downwardly;
a second printed circuit board having one or more LEDs mounted thereon, the second printed circuit board mounting with the bracket such that, when supplied with the low voltage DC power, the LEDs mounted on the second printed circuit board primarily emit light downwardly with respect to the light emitted from the LEDs mounted on the first printed circuit board; and
a diffuser disposed beneath the second printed circuit board, such that light emitted from the LEDs mounted on the second printed circuit board passes through the diffuser, but the light reflecting from the one or more surfaces does not pass through the diffuser.
14 Assignments
0 Petitions
Accused Products
Abstract
An LED-based lighting system includes a housing forming one or more apertures, a PCB having conductors on its front-side, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a top surface of the housing such that the LEDs emit light through the apertures, and heat generated by the one or more LEDs primarily dissipates through the conductors to the housing. A retrofit apparatus for a light fixture includes a PCB having conductors on its front-side thereof, and one or more LEDs mounted with the conductors. The PCB mounts with the conductors proximate to a surface of a mounting bracket that is configured for mounting to the light fixture, such that when the bracket mounts to the light fixture, heat generated by the one or more LEDs primarily dissipates through the conductors and the structural element to the light fixture.
123 Citations
17 Claims
-
1. A light-emitting diode (“
- LED”
) based retrofit apparatus for a light fixture, comprising;a bracket configured for attachment to the light fixture; electronics mounted with the bracket, for converting AC line voltage power to low voltage DC power; a first printed circuit board having one or more LEDs mounted thereon, the first printed circuit board mounting with the bracket such that when the first printed circuit board is supplied with the low voltage DC power, the LEDs mounted on the first printed circuit board primarily emit light upwardly into the light fixture, and the light reflects from one or more surfaces and exits the light fixture downwardly; a second printed circuit board having one or more LEDs mounted thereon, the second printed circuit board mounting with the bracket such that, when supplied with the low voltage DC power, the LEDs mounted on the second printed circuit board primarily emit light downwardly with respect to the light emitted from the LEDs mounted on the first printed circuit board; and a diffuser disposed beneath the second printed circuit board, such that light emitted from the LEDs mounted on the second printed circuit board passes through the diffuser, but the light reflecting from the one or more surfaces does not pass through the diffuser. - View Dependent Claims (2, 3, 4, 5, 6)
- LED”
-
7. A light-emitting diode (“
- LED”
) based lighting system, comprising;a housing forming one or more apertures; a printed circuit board (“
PCB”
) having conductors on a front-side thereof; andone or more LEDs mounted with the conductors; the PCB being mounted with the conductors proximate to and thermally coupling with a surface of the housing such that the LEDs emit light through the apertures, and heat generated by the one or more LEDs primarily dissipates through the conductors to the housing. - View Dependent Claims (8, 9, 10, 11, 12, 13)
- LED”
-
14. A light-emitting diode (“
- LED”
) based lighting system, comprising;a housing having one or more apertures formed therein; one or more LEDs mounted in the one or more apertures to emit light through a front surface of the housing; a printed circuit board (“
PCB”
) for controlling the LEDs, the PCB mounted on a back surface of the housing, the PCB including one or more electrical conductors that supply power to the one or more LEDs;wherein the one or more electrical conductors thermally couple directly with the housing such that more heat generated by the LEDs dissipates through the one or more electrical conductors into the housing as compared to dissipation through other thermal paths. - View Dependent Claims (15, 16, 17)
- LED”
Specification