Optothermal LED lighting for high lumen extraction and extended lifetime

A lighting system comprising;

• a lighting assembly having an LED chip on a printed circuit board;
• and
• a cooling system comprising:
• a heat sink having a heat sink base and heat sink fins, said heat sink base having a first flowing channel, at least one of said heat sink fins having a second flowing channel, said heat sink fins adapted to directly contact with an environment, said heat sink base being in thermal contact with a heated surface so as to transfer heat to said heat sink fins;
• a dielectric cooling fluid directly contacting said LED chip, said dielectric cooling fluid moving toward said heat sink base so as to have a decreasing density resulting from an increased temperature of said dielectric cooling fluid caused by said LED chip, said dielectric cooling fluid passing through said first and second flowing channels and then moving toward said LED chip;
• and
• a plurality of movement channels through said printed circuit board between said LED chip and said heat sink base , said dielectric cooling fluid passing through said plurality of movement channels in a gaseous or liquid phase during the movement of said dielectric cooling fluid.