Innovative LED lighting designs promote heat dissipation

Heat management is particularly important in ensuring a long life for LED lamps. Too much heat generation is of course a major cause of premature failure. One option is to improve the heat sink, but there are other ways to take away the heat. Here are a few good examples of heat transfer at the scale of a lamp.

Innovative LED lamp

The Cledos airLED-lamp, which was developed by scientists from Hong Kong, makes a heat sink superfluous by using air circulation to remove heat. This new generation of LED lamps requires fewer raw materials to produce, is significantly lighter, brighter, is more energy efficient and lasts longer. A lamp equivalent to 40-60 W incandescent uses 20-30 percent less energy than comparable LED lamps.  The innovative design uses heat circulation to dissipate heat, leaving it cool to the touch. The lamp weighs less than 60 g because it uses considerably less material and the stable design gives it a life expectancy of 30,000 hours, which is 15 times longer than a traditional incandescent lamp. The lamp is expected to appear in western markets at the end of 2014.

Innovation in LED armatures

The Goodlight LED SON-lamps from LED Eco Lights uses MagLev ventilation technology for cooling. Within this range, the Goodlight G360 LED SON replacement lamps achieve no less than 140 lm/W. The SON lamps are normally used to replace E27 and E40 lamps, which are mainly used in an industrial environment or for outdoor applications such as street lighting. The lamps generate high temperatures, which can lead to premature failure. Solving this problem with heat sinks and ventilators is not always desirable because of limitations in the design and the noise of the ventilator motor. In addition, the ventilators often suffer from wear and defects. The MagLev (magnetic levitation) ventilation technology offers a solution for this. By avoiding the need for bearings, the fan produces less than 0.5 dB. A second innovation of these lamps is the dual function of the aluminium heat sink. The heat sink plate is designed as a frame with the light-emitting PCBs snapped on to it. Because the design makes the use of solder and screws redundant, there are no problems with dry connection seams and vibrations. 

Thanks to this system of heat regulation the lamp can use more powerful LED chips that can achieve 140 lm/W and work reliably at temperatures above 70°C.

You can read how innovative production technologies for the heat sink can remove heat more effectively from high-powered electronics such as LEDs in this Techniline article (login required).

CycLED - Towards a future with LED lighting

The above examples show once again that eco-innovation and economy can go hand in hand. The effort to bring about better management of resources and energy also creates many opportunities.

The event ‘How to truly eco-innovate in the lighting industry’ responds to this trend. It takes place on 11 February 2015 in the Diamant Building in Brussels.

You can also contribute to the content of this event by filling in ‘survey barriers for eco innovation’  (max. 15 mins). The results, together with ways to overcome these barriers, will be extensively covered in the event.