LED lamps and lanterns is analysed to the development of the indoor lighting technical requirements

LED lighting market huge business opportunities and broad development space. LED lighting lamps and lanterns application has LED outdoor landscape lighting development from the past to indoor lighting applications. According to the analysis of the development of LED indoor lighting over the next five years will have exponential growth trend. The output will be up to tens of billions of dollars in 2011. Especially take the lead in implementing the eu in 2009 banned incandescent lamp, and much attention has been paid to energy conservation issues, has produced the LED indoor lighting the huge market opportunities and optimistic outlook.

high power LED lighting lamps and lanterns is development depends on two key elements of a chip itself; 2 it is technology of lamps and lanterns, including thermal, optical, driver. First is the chip, at present, the key to the development of the LED chip technology is the base material and the technology of epitaxial growth. Basal materials from the traditional material, silicon and silicon carbide, sapphire to zinc oxide, new materials such as gallium nitride. Whether for accent lighting and integral illume high power chip, is used for decorative lighting and some simple auxiliary lighting low-power chips, technology upgrade key is about how to develop more efficient, more stable chips. In just a few years, with the aid of including chip structure, surface roughening treatment and multiple quantum well structure design of a series of technical improvement, achieved great breakthrough in the field of photosynthetic efficiency of LED. Thin film chip technology is the core technology of the ultra bright LED chip production, to reduce the loss of the light output of each side and with the help of a reflecting surface at the bottom of the more than 97% of the light output from the front. This not only significantly improve the LED lights, but also created a favorable conveniences for lens design.

in fact, since the development of LED lighting lamps and lanterns has been focused on its service life, if only by a low thermal resistance of LED components for the installation of lamps and lanterns is not a good cooling system, and must effectively reduce the thermal resistance from the PN node into the surrounding environment, to reduce the PN node temperature of the LED, prolong the service life of LED lamps and lanterns and successful practice and improve the actual flux goals. Don't be in the general traditional lamps and lanterns, printed circuit board is LED power carrier, is also LED the heat carrier, so the heat dissipation fin and printed circuit board design is very important. In addition, the lamps and lanterns manufacturers must also consider the quality of the heat dissipation material, thickness, size and heat dissipation factors such as the processing of interface and connection.

the optical design of LED lighting lamps and lanterns, compared with traditional lamps and lanterns, directionality and point light source is the most typical feature of the LED is the key of the optical design of lamps and lanterns. Through the binary optical design LED, LED lamps and lanterns can achieve better light distribution curve. As the LED lighting lamps and lanterns of the largest indoor illumination light application market need is very bright, can use the high light transmittance chimney enhance the light extraction efficiency. Or applied technologies of light guide plate to lamps and lanterns, so as to change the LED point light source for the surface light source, not only can improve the light distribution uniformity of lamps and lanterns, also can prevent glare. Can also cooperate with some projection lens and reflector used to highlight the concentrating effect of illuminated objects to achieve real ideal optical effect.

the technical challenges of high power LED lighting, even LED in indoor accent lighting and decorative lighting applications have satisfactory performance, but the atmosphere in the general lighting and lighting applications are still facing many challenges, including the initial cost, low color temperature of light, color rendering index and system reliability, etc. Cost is a relatively sensitive factor in indoor lighting, especially in household lighting applications. Although leds model more and more, photosynthetic efficiency has been improved, but the price is high the problem still exists. But when the price of LED light source is reduced, the overall system design optimization, the total cost will decline.

the LED lamps and lanterns to improve photosynthetic efficiency on low colour temperature below 4000 K of low colour temperature is usually the first choice for indoor home lighting. Warm Bai Guangling whole environment more warm and relaxed; And cold Bai Guangze clean, efficient and bright feeling to the person, more suitable for office and outdoor lighting. LED lamps and lanterns, prolong service life, improve the system reliability. In general lighting applications, LED the overall efficiency, service life and reliability must be through the system optimization to ascend. LED light source is compact, high efficiency, has a variety of colors and the output power to choose from. Power transformation converts alternating current (ac), batteries and other power efficient safe low voltage, constant current power supply. Control and drive to use electronic circuit realization LED constant current drive and control. Thermal management to achieve a longer service life, LED node temperature control is very important, thermal analysis is also indispensable. Optics lens, reflector, or guide plate material is to focus light on the target area for the required optical element.

with the rapid development of LED technology and the gradual improvement of the LED lighting, LED application will be more and more widely. With global energy shortage problem increasingly serious, in particular, people pay more and more attention to the development prospects of the LED in lighting market, the LED will be replace incandescent lamp, the potential of tungsten filament lamp and fluorescent lamp light source. In addition, in terms of interior design of lamps and lanterns, the LED will incline to energy conservation, human nature and art.

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