Since 2002, the fast-growing global economy has also driven the lighting market. According to Huang Mengjiao, IIK Industry Analyst, ITRI, in 2007, the global lighting market, including lamps, light sources and components, reached US$91.25 billion, an average of the world. The annual lighting cost per person is US$14; it is estimated that the global lighting market will reach US$137.235 billion in 2015, and LEDs with an average price drop of 20% per year in response to high energy efficiency and environmental protection demand are expanding in the lighting market. increase.
The lighting market is developing in the same proportion as the global economy. Huang Mengjiao pointed out that lighting is the basic needs of human beings. However, most of today's lighting technologies are inefficient and costly. With the growth of population and economy, lighting will become a behemoth of engulfing energy.
According to the International Energy Agency (IEA), global lighting energy consumption was 2,651 TWh in 2005, with a total cost of 365 billion US dollars, accounting for 1.2% of global GDP; the resulting carbon dioxide emissions are about 1.9 billion tons, equivalent to 70% of the world's light Car emissions, but the annual lighting system efficiency is only 50lm / W.
These statistics show that current lighting technologies are inefficient, resulting in excessive energy consumption. Huang Mengjiao pointed out that in general, household incandescent lamps have a luminous efficiency of 8 lm/W, and products up to 15 lm/W are usually considered to be ultra-high brightness. However, the theoretical luminous efficiency of white LEDs has reached 300 lm/W. This year, Nichia has even shown 249 lm/W white LEDs. These technological advances with indicators further drive the potential for LED lighting to penetrate into general applications.
She pointed out that from 1998 to 2002, LED lighting applications were mainly small night lights or flashlights, and then gradually expanded special lighting applications, such as architectural lighting, advertising lights. Since 2008, LED has officially begun to replace some incandescent lamps, and it is estimated that since 2010, LEDs will also enter the home, providing different functions of lighting in different forms, such as LED fluorescent tubes with direct replacement benefits, is expected to be The field that most manufacturers invest in.
However, LEDs still have some inherent problems to be overcome, such as glare and point source characteristics that cause uneven brightness. This is a relatively deriving demand for new materials, especially in terms of diffusers, which will be the key development direction.
According to StrategiesUnlimited and IEK, the market for LED components for lighting without lamps is less than $400 million in 2007, but is expected to grow to nearly $1.8 billion in 2012. In order to meet the lighting market opportunities, future LED products still need to strengthen the dynamic control of light color and light intensity, and reduce the size of the control system, so as to eliminate installation obstacles when using ceiling lights or special places.
As for another efficient next-generation light source technology, OLED, Huang Mengjiao pointed out that due to technology and cost, the probability of OLEDs entering the consumer application quickly is not high. In 2012, if the technology is mature, OLED is expected to replace a small number of planar light sources. However, due to price factors, LEDs are not threatened. The most likely phenomenon is to replace poor quality in some special applications. LED application.
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