The main development trend of LED lighting technology

LED lighting for its high efficiency, low energy consumption, long life, light, etc, and gradually replace the incandescent lamp, are widely used in various fields. Over time, the market also presents new challenges for commercial led street lighting wholesale, environmental sensitive and intelligent modular design has become the main trend of LED development.
At present, the characteristics of the LED has been significantly improved, LED downlights and retrofit bulbs already have a higher luminous efficiency than existing technologies (incandescent, halogen and compact fluorescent lamps); LED next few years will continue to decrease costs, may reduce the cost of LED bulbs and lamps; compared with the 2010 study, LED prices have accelerated decline (down 13-24% per annum).
On the policy side, many countries have introduced policies to encourage the development of LED lighting industry. For example, commercial led street lighting wholesale and Reform Commission recently issued the "semiconductor lighting energy industry planning", plans to 2015 functional LED lighting products market share of over 20%, LED lighting energy industry output growth of around 30% in 2015, with an annual output value of 450 billion yuan ($ 72 billion); Moreover, by 2015 more than 60W incandescent bulbs for general lighting will be fully eliminated.
A wide range of general lighting power, LED general lighting include: Residential (3W-15W), as 60WA-19 bulb 800lm 's; business and building decorative lighting (15W-75W), such as the 2,800 lm 4 feet long T8 lamps ; outdoors and infrastructure (75W-250W), such as a 150W metal halide 13,000 lm.
These LED drivers encountered many challenges: energy efficiency is critical, because the fixed bulb shape can lead to heat is limited; limited space inside the bulb, the need for greater heat sink area is particularly true of high power bulbs; LED is rapidly changing, with many choices; drive electronics must be reduced to increase the space to the constituent material; drive needs to be optimized to cope with different lighting and power requirements.
LED driver challenge there LED configuration (LED quantity / drive current) influence the choice of topology; bulb type on heat sink design, and greatly affect the system options, such as energy efficiency targets, the available space; influence the choice of isolated or non -isolated topologies the factors include: LED selection, safety, mechanical design know-how and technology; LED manufacturer of rapid innovation, the introduction of new LED configuration and design (high-voltage LED / multi-LED package).
In addition, determine the characteristics of commercial led street lighting wholesale can achieve "smart lighting" advantage, because the LED is easy to control and dimming; electronic circuit to increase the variety of new features, such as built-occupancy (occupancy) sensor to adjust the brightness according to the ambient light to province electricity, wireless interface without changing the switch or cable;. saving technology and the convenience and safety However, the "smart" lighting requirements AC-DC LED driver IC must be designed to easily fit analog and digital (PWM ) dimming; using low-power wireless interface, such as IrDA infrared, ZigBee and Bluetooth low energy (Bluetooth LE); Wireless Control standards in place, such as ZigBee Light Link; to measure ambient light and easy to use device to detect human activities .

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