(6) low operating costs Other light sources are not only power consumption is 2-10 times the LED light source, and almost every month to be replaced in the device replacement and labor costs. So choose a long life LED light source in the long run is very economical. 5.1 Use of LEDs as a reason for lighting
At present, lighting accounts for about 20% of the world's total energy consumption, if the high efficiency of the L E D to replace the current low efficiency, high power consumption of traditional lighting, no doubt to alleviate the current increasingly pressing energy and environmental issues play a decisive .
Although the application of LED is still in its early stages, the advantages of LED lighting are still outstanding compared with the current lighting equipment: (1) High luminous efficiency, low energy consumption LED's luminous efficiency is expected to reach 200lm / W or more, Monochromatic good, narrow spectrum. In the same lighting effect, LED power consumption is incandescent 1/8, fluorescent 1/2. (2) long life LED life can be up to nearly one hundred thousand hours, and incandescent lamp is generally 1000 ~ 2000h, fluorescent lamp 6000 ~ 8000h. (3) safety and environmental protection LED solid-state light-emitting body, vibration-resistant, impact resistance, and low heat, no heat radiation, no pollution. (4) start-up time LED response time is only a few tens of nanoseconds, it is suitable for use in some situations that require rapid response. (5) small size LED has a small, flat, can be designed and strong features that can make people from the traditional point-line light source point of the liberation of the restrictions to achieve the arbitrary layout of lighting. White LED luminous efficiency has exceeded 60lm / W, it is predicted that with the LED unit price decline, by 2010 or so, white LED lighting will gradually replace the incandescent and fluorescent lamps, as the mainstream lighting. LED is a low-voltage driven cold light source, its performance by the use of conditions and drive performance constraints.
5.2 The characteristics of the selected LED lights
(1) light distribution design (bat wing with optical lens):
Reasonable control of the distribution of light to the rectangle was to ensure the ideal road brightness and uniformity at the same time, a good elimination of glare and the utilization of light energy to the limit;