"Quality" LED: why do not live up to the era of energy saving?

"From the beginning LED application is constantly brilliant. From the 6.3V indicator, Christmas decoration small milk bubble, traffic lights, etc., while the single color bar screen along the way with the railway, the stock market, the development of the banking industry step by step growth. If there is no LED, the phone should be how to design, in addition to the high reliability of the car needs LED, compact notebook can not be separated from the LED, colorful stage needs LED deduction, lighting is to stimulate domestic demand LED

LED has been widely used in landscape lighting, outdoor lighting, decorative lighting, and general lighting is the future of the LED industry attention. In addition, due to the shadow of the energy crisis, the world has entered the era of energy saving, countries are actively through legislation and government guidance, etc., with a LED lamp to replace incandescent lamps, LED lighting market demand prospects.

If there is no LED, the phone should be how to design, in addition to the high reliability of the car needs LED, compact notebook can not be separated from the LED, colorful stage needs LED deduction, lighting is to stimulate domestic demand LED. LED products and the bulk of the industrialization of LED market prices continued to decline, driven by its application to the diversified development of emerging applications market has also made rapid increase in the size of the LED market in recent years.

LED applications have begun to start from the small size of the phone TFTLCD backlight, to large size TFTLCD backlight source, automotive lighting, decorative lighting and other diversified applications. In the automotive lighting for example, divided into internal and external application of vehicle LED vehicle, including internal instrument panels, air conditioning sound lights and internal reading lamps; external use include third brake lights, tail lights, lights, side lights and other direction.

At present, in addition to headlights because of the distance and brightness and other issues, only a small amount of use, the interior and exterior lighting of the car has been widespread LED. The current consumer portable lighting, portable lighting overall market of about $1 billion, which accounted for the largest market share of the flashlight, LED in special and professional applications of the flashlight permeability of nearly 30%, LED lighting, outdoor lighting, LED outdoor lighting refers to the highway road tunnel and other regions, including street lamps, lights, Park parking lot the lamp and so on.

Because road lighting driving safety considerations, to comply with road safety regulations, luminous flux, luminous efficiency and LED the current price is still with high pressure sodium lamp with a small distance from the indoor lighting in the exhibition area, retail display not only needs a larger illumination range, but also need to show the characteristics of light source products show, many types of products, including clothing, cosmetics, food, jewelry and so on, how to use different lighting products showing the characteristics of out of the ordinary is an important knowledge. Nevertheless, there are still some factors restricting the development of LED lamps. The main technical factors affecting the performance of LED devices are the heat dissipation and the driving problems.

When driving high brightness LED, because all of the power output is not converted into light energy consumption, how to solve the problem of LED and drive IC cooling is a problem. Because the LED light source is low voltage and high current drive, the luminescence intensity is determined by the current flowing through the LED, the current is too strong will cause LED light attenuation, weak current will affect the luminescence intensity of LED, therefore, LED driven by the need to provide a constant current power supply, to ensure the safety of power used by LED. At the same time achieve the ideal luminous intensity.