LED-based light engine having thermally insulated zones

摘要

An LED-based luminaire employs an LED module mounted to a housing. The LED module is advantageously configured to transmit heat generated by the LEDs across and/or through the module and to the housing for dispersal to the environment. LED modules can be configured with conductive or non-conductive cores, and may be configured to evacuate heat from one or both faces of the LED module. Further, multiple heat paths can be defined from components on an LED module to the housing and to the environment.

主权项

1. A light engine, comprising:
a light emitting diode module comprising,
a nonconductive substrate having a first side and a second side, the first side having a first region and a second region;a plurality of conductive contact pads attached to the first side of the nonconductive substrate, and being positioned in the first region,a first plurality of thermally conductive plates attached to the first side of the nonconductive substrate, and being positioned in the second region,a plurality of light emitting diodes arranged in a circuit in the second region,a plurality of conductive circuit traces formed on the first side that communicate selectively with the plurality of conductive contact pads in the first region and the light emitting diodes in the second region, anda plurality of electrical components disposed on the plurality of contact pads in the first region, wherein the plurality of electrical components is thermally insulated from the plurality of light emitting diodes such that thermal energy generated by the plurality of light emitting diodes preferentially flows to the first plurality of plates in the second region; and a first housing formed of a thermally conductive material and having an aperture, the light emitting diode module mounted on the first housing so that light from the plurality of light emitting diodes is directed through the aperture; wherein the first plurality of thermally conductive plates of the second region engage the first housing so that heat from the light emitting diodes is directed to the thermally conductive plates and further to the first housing.