LED help cultural performing arts in the field of energy-saving emission reduction

Shenzhen Universiade highlights the concept of low carbon environmental protection, the venue construction principle is can not change the construction, repair can not change, can rent not buy, can borrow not rent, embodies the idea of sustainable development, energy saving and emission reduction facilities art lighting engineering is often easily overlooked. China's lighting consumption accounts for about 20% of the total electricity consumption, and the performance of the venue lighting is one of the major energy consumption, reducing the venue lighting energy consumption is an important way to save electricity.

At present, the domestic and foreign theater stage lighting lamps and lanterns basically uses 1KW - 5KW halogen tungsten light source lamps and lanterns, its energy consumption is very high. LED lighting has the characteristics of low power consumption, high luminous efficiency, long life, rich colors, strong controllability, no infrared radiation, especially the energy saving effect is remarkable, with a medium-sized theater as an example, according to the traditional halogen lamp dock design, lighting electricity consumption will reach about 650KW, and the use of stage lighting the green light source, lighting electricity consumption only about 180KW, saving rate as high as 70%, and the distribution capacity of the stage lighting system is also greatly reduced, can save a lot of cable wire, the LED lamp adopts direct power supply and power, eliminating the pollution to the power system harmonics generated by dimming silicon, but also save "harmonic" a huge amount of money.

However, stage lighting for film and TV exists urgent need to solve the problem, the first is the two optical design, the reference design concept "point source", the use of free surface and micro lens technology, to improve the light efficiency of LED, solve the light distribution curve of different lighting and color requirements; the LED lamp heat, drive control problem is the direct factor influencing the service life of the LED light source lamp. Many domestic manufacturers of LED light source lamp life of different opinions, there are 30 thousand, 50 thousand, 100 thousand, said the standard to be solved. International L70 as a standard assessment of the LED light source life, namely LED initial flux attenuation to the initial value of 70% was recorded when the effective service life of the light source; and in the domestic LED industry, many enterprises as the life standard of light flux attenuation to the initial value of 50%.

Improve the service life of LED lamps, need to focus on three aspects:

1, the quality of the chip, LED chip is the core component of the light source, affecting the quality of the chip lattice defects, packaging process and the quality of phosphors;

2, LED heat dissipation system: the current high-power LED light emitting white light flux is only about 100lm/w, in theory, only about 1/3 of the electric energy into visible light, most of the energy into heat. If the heat treatment of the lamp is not good, the P-N junction temperature of the chip is high, and the LED chip will soon be damaged;

3, driver: this problem is easily ignored, usually LED the life of the chip is far greater than the driving power of life, often the LED lamp is not lit, the inspection found that the chip is not damaged, but the drive power failure, at present, the driving power has very good life over thirty thousand hours.

We must face up to the fact that the independent intellectual property rights of LED enterprises in our country are relatively few, especially the core patents with the status of negotiations are very scarce. The lack of inter enterprise cooperation based on the complementary relationship, blind expansion of production enterprises also led to vicious competition of the products currently on the market; high power LED module 200W above the light of professional products are available, halogen light can replace the traditional development stage of high energy consumption has great potential.

Beijing's Changan Grand Theater has replaced the stage lighting all the energy efficient LED lamps, the only domestic and international use of low carbon lighting theater. As of 2008, the provinces and cities have more than 2 thousand art exhibition venues, large and medium theater nearly 1000; with a television station of more than 2 thousand, all kinds of studio reached nearly 5000. Such as the implementation of "green lighting project" in the domestic cultural venues, namely the implementation of green lighting project in 100 theaters, will save electricity 50 million degrees, on the promotion of the stage lighting demonstration and application of green light, will have a very considerable economic and social benefits.

The application of LED to promote green lighting in the field of professional film and stage, to enhance the technical capacity of the cultural industry LED green lighting, let our venue construction stage lighting, energy saving and emission reduction become the leading trailbreaker of green lighting, the LED festival.