US Patent No. 9,102,857

METHODS OF SELECTING ONE OR MORE PHASE CHANGE MATERIALS TO MATCH A WORKING TEMPERATURE OF A LIGHT-EMITTING DIODE TO BE COOLED


Patent No. 9,102,857
Issue Date August 11, 2015
Title Methods Of Selecting One Or More Phase Change Materials To Match A Working Temperature Of A Light-emitting Diode To Be Cooled
Inventorship Matt Weaver, Aptos, CA (US)
James Kingman, Woodside, CA (US)
Assignee LUMENETIX, INC., Scotts Valley, CA (US)

Claim of US Patent No. 9,102,857

8. A method, comprising:
selecting one or more phase change materials (PCMs) to cool a light emitting diode (LED);
placing a plurality of containers in thermal contact with the LED, placing the one or more PCMs in at least one of the plurality
of containers and providing water in at least one of the remaining of the plurality of containers;

absorbing and storing a first portion of heat generated by the LED during its operation in the one or more PCMs;
convecting a second portion of the heat generated by the LED during operation; and
dissipating the heat absorbed by the one or more PCMs after the LED is turned off,
wherein the one or more PCMs are selected based upon heat storage capabilities of the one or more PCMs, and
operating the LED in a cyclical application.