The heat generated by an LED, and how heat affects the control of an LED’s response time, makes cooling a primary concern. Because LEDs are semiconductor devices, their light output is directly impacted by temperature. If the thermal situation is not managed, it will cause the LED to perform improperly, stop functioning or shorten its expected lifespan.
The immediate issue is managing LED heat to preserve its performance. How LEDs display colors and how long they can be expected to function puts proper thermal management at the center of their deployment. Across the full temperature range that most lighting is designed for, there is a swing in the relative light output. Each color is affected differently by temperature and the swing in light output is distinctly measureable and visible. This includes the low temperature ranges that are most common to today’s lighting applications.
The challenge facing LED lighting designers is the alignment of the cooling system/solution with the deployment-site requirements and its market acceptance. LED lighting, or correctly stated, solid-state lighting, is identical to other electronic devices whose longevity and proper operation directly depend on their junction temperature and how it’s thermally managed. Several cooling technologies for effective LED thermal management are now available and are being deployed across the electronics industry.
Dr. Azar’s presentation will review the details of LED heat transfer that will dictate the selection of the cooling system. The presentation will show cooling options for single- or multi-chip LED lights for varied applications, and how to assess their relative effectiveness. ATS's has also release an LED Cooling Resource Kit in conjunction with Dr. Azar's talk. The kit contains important information relative to thermal management of LED. The kit may be downloaded from ATS at this link: http://qats.com/
About the Smart Lighting Conference (http://www.smartlighting.org): The 2012 Smart Lighting Conference and Showcase will zoom in on new developments in smart lighting solutions in general for the industry and specifically for market segments including commercial lighting, residential lighting and public lighting. Focus will be on adding intelligence to LED applications to make them more efficient and controllable, and as a result, lower in cost. Renowned speakers from the lighting industry, end user market, semiconductor industry and integrators will discuss current and future business opportunities and energy efficient applications
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