LED application in city night view lighting five unique advantages

There are many kinds of, can be used in the illumination light source when we choose the light source should we mainly went up from the effect, the performance and cost considerations. When comparing the cost of different solutions, not just compare the price of light source, whole life period of comprehensive economic analysis should be done more than

there are many kinds of, can be used in the light of illumination in select light source, we should mainly went up from the effect, the performance and cost considerations. When comparing the cost of different solutions, not just compare the price of light source, more should be the whole life period of comprehensive economic analysis and comparison, because some of the high efficiency, long life light source, though the price is higher, but use fewer, operation maintenance cost is reduced, the economic and technology is reasonable.

illumination adopted by the traditional light source, such as incandescent and halogen lamps, the point is bright, has the very good color rendering; But its luminous efficiency is low, life is relatively short, therefore is less likely to be adopted. Flood lighting light source is presently used high pressure discharge lamp, such as high pressure mercury lamp, high pressure sodium lamp and metal halide lamp, the light source power is larger, can achieve large area flood lighting. However, these light common disadvantage is that light after light will take some time to stable work; And, if the lights accidentally out, such as lamp need to fully cooled to restart. In addition, the light is not easy to achieve dynamic effect such as color change, although if match with color filter, also can realize the change of light color, but this will greatly affect system efficiency.

as the emerging strength of the light source, LED light-emitting way very different from the traditional light source. It is the use of semiconductor PN section of the electrons and holes in the compound to shine. The different methods of light determines the LED has essential difference with the traditional light source, also determines it has its own unique characteristics.

in the first place, the LED is small in size, the size of the single high power LED chips are generally one square millimeter, plus the encapsulation material outside, a LED usually only a few millimeters in diameter, multichip mixed light LED by integrating more than LED chip, a slightly larger size. This on lighting lamps and lanterns of shape design with high flexibility, can the LED lamps and lanterns is according to the need to make dot, line, or plane light source, can also according to the characteristics of the building structure to customize the size of the lamps and lanterns, in order to better the effect of the implementation of the see the light does not see the light. Modern building more and more glass walls and other more new material, this makes the traditional way of illumination outside gradually replaced by the pervious to light lighting, and LED is the best choice of pervious to light within, and help reduce light interference and light pollution.

second, LED color is rich, good monochromaticity emergent light. Monochrome leds exit the monochromaticity of the light is better, this is determined by the luminous principle of LED chips, adopt different luminescent material, can be different colors of light, in addition, the LED street lamp, on the basis of the blue chips, with yellow phosphor, can get different color temperature of white LED, or by moving the red, green, blue three monochromatic LED chips encapsulation into a LED, using the corresponding optical design for three colours mixed light.

the third, LED long service life, fast response, can switch over and over again. The life of the high-power LED under normal working conditions can be up to 50000 hours, and LED the response soon, and we can be repeated for the LED switch operation without harmful impact on its life or performance. This and the traditional light source is very different. Ordinary incandescent lamp if switch repeatedly, the life down quickly; Common fluorescent lamp, each switch will cause the loss of the electrode material, so frequent switch can also lead to the life of the tube falling fast. For high pressure gas discharge lamp, repeatedly switch will also be very adverse effects on the lamp electrodes, and this kind of light source can't realize the warm start, the lamp is subject to a certain time after go out after cooling, can start again. Therefore, for some of the lighting effects requires repeated switch operation, LED has a unique advantage.

4, LED light color can be quickly and multiple changes. As mentioned above, will be red, green, and blue monochromatic LED chips encapsulation together, and mixed three colours of light, you can get the white light. If we have red, green, and blue chip to control respectively, three color can change in the ratio of output light, so as to realize the change of whole LED light output. Thus, an LED like a palette, can according to the needs of different mix out different colors of light, it is impossible by the traditional light source. LED fast response, easy to control, so can realize fast and smooth color diversity change, we can make use of the characteristics of the LED, constructed many dynamic effect.

5, the LED can be used to build all sorts of design. Because the LED is small in size, firm structure, response time is short, we can use the LED construct certain graphics; And then will these graphics are combined to achieve the effect of some design. Now, the streets in the city, business shop, we can see a lot of LED built by graphic design or 3 d graphics, these designs and graphics can achieve very dazzling effect. In addition, we can be LED to large-scale centralized control, the whole building exterior wall as a dynamic picture display.