Opportunity and challenge: the LED is now known as the fourth generation lighting source or green light LED light source is more conducive to environmental protection. LED lighting source no ultraviolet and infrared LED used in the process of harmless to humans, can also be recycled after abandonment

" Earth Hour", many of the world's iconic buildings are the external landscape illumination extinguished. From Sydney Opera House to the Imperial Palace in Beijing, Hongkong from the Victoria Harbour to the Dubai star Lugger Hotel, from London Westminster Abbey to the The Empire State Building in New York, the global24 time people pass the dark, so that ordinary people in the dark to stop, take 60Zhong Lai attention and understanding of the environment, promote environmental protection become a ordinary people way of thinking, life style.

" Earth Hour" is a stylish and relaxed environment show. We can't always turn off the light, we can not do without illumination, we need to find more green light source, LED ( LightingEmitting Diode ), we can have more green lighting.

Environmental protection:90% energy saving, long life ten times

LED is a solid semiconductor light emitting element. It uses solid state semiconductor chip as light emitting material, in a semiconductor by carrier recombination, released excess energy, arouse the photon emission, directly emit various color light. The color of the light depends on the chip by use of a semiconductor material. And computer chips, LED can be very small, even for only the size of a fingernail.

On 1955, Radio Corporation America Lubin first found gallium arsenide ( GaAs ) and other semiconductor alloy infrared radiation effect. On 1962, general electric company's Nick developed the first practical application of the visible light emitting diode. LED over the years has been used as the radio or audio power indicator, in recent years its applicable scope expanding.

Now LED is called the fourth generation lighting source or green light, has the advantages of energy saving, environmental protection, small size, long life and other characteristics, can be widely applied to various instructions, display, decoration, back light source, general lighting and city night scene lighting and other fields.

Philips company chief executive Ke Cilei said:" in solid conduction technology drive below, radio vacuum tubes were replaced by transistor, liquid crystal display TV tubes replaced, ultimately, such changes in lighting field."

LED belongs to a DC drive, has the ultra low power, single tube can reach 0.03~0.06tile, photoelectric energy conversion efficiency of close to 100%, the same lighting effects, than the traditional energy-saving light more than 90%, than the ordinary energy-saving lamps are also more than 50% energy saving, service life is 10 times longer than traditional light sources.

LED light source is more conducive to environmental protection. LED lighting source no ultraviolet and infrared rays, no heat, no radiation, no glare effect. LED light source in the manufacturing process, not involving mercury and other heavy metals, used in the process of harmless to humans, can also be recycled after abandonment. LED is a solid cold light source, no heat generation, safe touch, is a typical green light.