The light source can be used for night lighting, there are many in the choice of light source, we should consider from the results, performance and cost up. Compare the cost of the solution, not just the price of relatively light, but also the whole life of the economic analysis, because some of the efficient, long-life light source, although the higher prices, but the use of the reduction in the number, operation and maintenance cost reduction, economically and technically reasonable.
Night lighting in the traditional light source, such as incandescent and halogen point light, good color; but the luminous efficiency is low, life expectancy is relatively short, and therefore rarely been used. Floodlight lighting is high pressure discharge lamps, such as high-pressure mercury lamp, high pressure sodium and metal halide lamps, these light sources power is larger, you can achieve large area floodlighting. However, the common drawback of these light sources, light will take some time to stabilize after the light work; Moreover, if the lamp accident off, need to restart the lamp to fully cool. In addition, these lights is not easy to achieve the dynamic effects of light and color changes, if together with the filter, the light color changes can also be achieved, but this will greatly affect the efficiency of the system.
As an emerging force in the light source, led driver 120w luminous and very different to the traditional light sources. It is the use of electrons and holes in the semiconductor PN section composite luminous. Luminous way different decisions LEDs and traditional light sources are essentially different, it has its own unique.
First, the size of the LED is a small, single powerful LED chip size is generally only 1 mm2, coupled with the outside of the packaging materials, the diameter of an LED is usually only a few millimeters, multi-chip mixed light LED integrated LED chip, size slightly larger. High degree of flexibility in the appearance of the lighting design, LED lamps need to be made the size of point, line or surface light source, according to the characteristics of the building structure to custom lamps to implemented as well as see the effects of light but not light. Modern building more and more mining multi-glass wall and other new material, which makes the traditional outside lighting for ways to gradually replaced as the transmission way of lighting, LED lighting as the transmission an excellent choice, and help reduce the problem of light interference and light pollution.
Second, the LED Flood light 10W color is rich, monochromatic incident light. Monochromatic LED beam of monochromatic, which is determined by the LED chip emitting principle, the use of different luminescent material, you can get the monochromatic light of different colors, in addition, on the basis of the blue chips, with yellow phosphor can be a different color temperature white LED, or by the red, green, blue three monochromatic LED chip package to an LED which the optical design to achieve the mixing of the three shade.
Third, the LED's long life, fast response, you can repeatedly switch. High power LED's life expectancy under normal working conditions, more than 50,000 hours, LED response soon, we repeated switching operation of the LED without the life or performance of the harmful effects. This is very different from traditional light sources. Ordinary incandescent lamp switch repeatedly, its life expectancy drop; ordinary fluorescent lamps, each switch will cause the loss of electrode emission materials, frequent switching can lead to a rapid decline in the life of the lamp. High-pressure gas discharge lamp, repeatedly switching the electrodes of the same will light a very negative effect, but this type of light source can not warm boot, that is, the light goes out, be cooled by a certain time before they can start again . Therefore, the need to repeatedly switch operation in terms of lighting effects, LED Power Supply has a unique advantage.
Fourth, the LEDs can be light color of the fast variety of changes. As noted above, the red, green, and blue monochrome LED Spotlight 30W chips together, will be issued to the three colored light mixed light, you can get white light. If we are red, green, blue three-chip control, you can change the ratio of three colored light in the optical output, in order to achieve the color change of the LED optical output. As a result, an LED is like a palette, can be deployed depending on the needs of the different colors of light, which is the traditional light source can not be done. LED response speed is fast, easy to control, so you can achieve fast light color, variety of changes, we can use this feature of the LED's, constructed a number of dynamic effects.
Fifth, the LED can be used to build a variety of patterns. LED Floodlight 80W small size, solid structure, and short response time, we can build with LED graphics; then these graphics to be combined in order to achieve certain design effect. Now, in the streets of the city, businesses and stores, we can see a lot of flat pattern built by the LED or three-dimensional graphics, patterns and graphics can be very compelling results. In addition, the LED large-scale centralized control, the entire building's exterior as a dynamic screen display.