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Blue Led

Led Lighting Energy saving technologies

Due to the advantages of energy saving, environmental protection, the LED has become a major trend in light industry. As the technologies and product attributes used in LED are very different from traditional lamps, so the rules safety regulations and standards for general lighting is obviously not applicable for the LEDs. To assist the industry to address this problem, this problem is explained LED lighting technology and the scope of possible applications.

LED lighting refers to lighting products with LED (Light-Emitting Diode) technology as the main source of light. LED is a semiconductor components, solid state, the use of direct current distribution to the semiconductor PN junction, isolated and then the negative charge electrons combine with the positively charged holes, the emission of photons when two types of electric utility combined. Different types of LEDs can emit different wavelengths of light from infrared to blue and violet purple. In recent years, a new development fluorescent powder is painted in blue LED finally reach the white LED light. The operation usually requires LED driver or power supply, the main function unit or power supply is to convert the AC to DC, and at the same time to achieve the voltage and constant current LED components to control the game.

LED lamps with small bulb size, lightweight and packed by epoxy resin, high intensity can shock and vibration mechanism accessed, is not easy break, and long cycle of decline brightness, lifetime until 50.000-100.000 hours, far above the traditional incandescent light (1,000 hours) and fluorescent tubes (10,000 hours). Since life expectancy of 5-10 years, so that the LED lamps can not only reduce the cost of replacement lamps significantly, but also due to the feature that can be driven by extremely small currents, when the same lighting effects, power consumption is only half fluorescent light.

But because some of the LED technology is still insufficient, there are shortcomings when using LED lights initially, including quality in low light (color performance, consistency, color temperature), the problem of heat dissipation, and high price, including the problem of dissipation Heat accelerates the decomposition of brightness and reduce the life of the components of the circuit. As manufacturing technologies have developed considerably in last ten years, the shortcomings mentioned above were also improved. In addition to the LED luminous efficiency of cold wihite has reached 100 Lm / W in 2008, efficiency light warm white LED is expected to increase from 70 Lm / W to 100 Lm / W in 2010. Compared to the current general light source: incandescent bulbs around 15 Lm / W, fluorescent lights 45 ~ 60 Lm / W, HID light around 120 ~ 150 Lm / W, LED luminous efficiency have a significant advantage, following is a comparison LED lamps and other lights in common:

White LED: less heat, wide operating environment, small size, anti-vibration, focused beam.

Fluorescent: energy saving, but fragile and control pollution of waste such as mercury issues.

Incandescent bulbs: low efficiency, high intake, short-lived, fragile

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