Based on the application of high brightness LED in lighting

Since the first light-emitting diode was born in the 1960s, LEDs have only been used for signal indication purposes for a long period of time because of the limitation of output lumens. In the nineties, blue LEDs were commercialized because of their economical implementation. In the 21st century, high-power white LEDs have been successfully developed and rapidly industrialized. During this period, due to the intervention of large lighting source lighting companies, such as PHILIPS and OSRAM, the luminous efficiency of high-brightness white LEDs has achieved a breakthrough improvement, and they have rapidly begun to enter general lighting applications. Currently, the light efficiency of high-brightness white LEDs has surpassed the efficacy of fluorescent lamps under good heat dissipation conditions. With more technology and capital investment, the luminous efficiency of high-brightness LED is constantly improving, and its cost begins to decline rapidly. Ultimately, its performance-to-price ratio will certainly be accepted by ordinary consumers.

The types of traditional lighting sources include: incandescent lamps, tungsten halogen lamps, fluorescent lamps, and high-intensity discharge lamps. In contrast, solid-state lighting sources using high-brightness LEDs have many advantages: low power consumption, high light efficiency, long life, fast response, easy digital control, and environmental friendliness.

Comparison of the efficacy of LEDs versus conventional light sources According to the US Department of Energy (DOE), 22% of the United States' electricity is used for lighting. DOE claims that in the next 20 years, LED lighting will be rapidly popularized in the United States, which can reduce lighting power demand by 62%. In addition, it can eliminate 258 million tons of silicon dioxide emissions and build 133 new power plants. Using LED lighting can save more than 115 billion U.S. dollars.

In China, the National Semiconductor Lighting Engineering R&D and Industry Alliance has been established. The technical specifications formulated by the alliance will be promoted through the use of seminars, training, and other methods within the alliance, and will be recommended to the government procurement department and standard management department to be incorporated into the national and industrial standards working system to guide and promote the formulation of national and industrial standards. Implementation. At the appropriate time, the alliance will set up the “Union Standardization Technical Committee” and invite government leaders, industry experts, standardization experts, quality inspection agencies, and testing equipment experts to participate. The State has already issued the Interim Measures for the Promotion of Financial Subsidy Funds for the Promotion of High-Efficiency Lighting Products. This is another important measure taken by the Chinese government to increase efforts to promote high-efficiency lighting products and promote the realization of energy-saving emission reduction targets, so as to ensure the realization of financial subsidy through the “Eleventh Five-Year Plan” period. The promotion of 150 million efficient lighting products can save 29 billion kwh and save 29 million tons of carbon dioxide emissions.

At present, China's semiconductor lighting is mainly used in the field of special lighting, such as traffic lights, landscape lighting, LED full-color display, etc., but the effect of energy saving is obvious: such as landscape lighting (instead of neon lights) energy-saving 70%, traffic lights (instead of incandescent lamps) 80% energy saving; Garden lights energy saving 70%. In the field of functional lighting, energy-saving effects have begun to appear, such as LED as a secondary road lamp (instead of high pressure sodium lamp) energy-saving 70%. Although the initial purchase price is three times that of ordinary streetlights, the overall cost can be approximately 3-4 years. It is expected that when the LED product's luminous efficiency reaches 100 lm/W, it will begin to enter the general lighting market, saving 50 billion kWh of electricity annually, and CO2, SO2, NOx, and dust emission will be reduced by 50 million tons through saving electricity. When the luminous efficiency of LED products reaches 150 lm/W, LED lighting will occupy 20% of the lighting market (lighting electricity will exceed 500 billion kWh), and will save 100 billion kWh of electricity annually, exceeding the annual power generation capacity of the Three Gorges Hydropower Station ( 84.7 billion degrees / year). Through energy saving, CO2, SO2, NOx and dust emission can be reduced by 100 million tons.

At present, the mature LED application market includes architectural landscape lighting, architectural landscape lighting, advertising display, small-size LCD backlight, automotive applications, and solar LED lighting. In the future, there will be broader application prospects, such as medium and large size LCD backlights, road lighting, indoor ordinary white lighting, artificial light sources for agricultural production, medical light sources, LED liquid crystal projectors, LED light sources for DLP rear projection, aviation Lighting source, museum artifacts display lighting, etc.