LED Street Light Can Be Widely Used In Urban Road Lighting
LED street lamp Unlike conventional high-pressure sodium lamp street light, high-power LED street lamp light source using low-voltage DC power supply, GaN-based power-based blue LED and yellow phosphor synthesis of high efficiency white light diodes with high efficiency, safety, energy saving, environmental protection, long life , Fast response, high color rendering index unique advantages, can be widely used in urban road lighting. Housing available PC pipe production, high temperature up to 135 degrees. Low temperature reached -45 degrees.
Light Emitting Diode (LED) is an efficient solid-state light source based on a semiconductor PN junction that can emit light with a weak electric energy. Under a certain forward bias voltage and injection current, holes injected into the P region and N The electrons in the area diffuse to the active area and emit photons after being radiated and recombine, and the electric energy is directly converted into light energy.
LED street light advantages
1, the characteristics of LED lights themselves - one-way light, no light diffusion, to ensure the efficiency of light;
2, LED street lamp has a unique secondary optical design, the light of LED street lamp shines on the required lighting area, to further improve the lighting efficiency in order to achieve the purpose of energy saving;
3, LED light source efficiency has now reached 90-110lm / W, but there is still much room for development, the theoretical value of 250lm / W. The high-pressure sodium lamp luminous efficiency is increased with increasing power, therefore, the overall light-efficient LED street lamp is stronger than the high pressure sodium lamp; (The overall luminous efficiency is theoretical, in fact, high-pressure sodium lamp above 250W luminous efficiency than LED) .
4, LED street light color rendering is much higher than the high-pressure sodium lamp, high-pressure sodium lamp color rendering index is only about 23, while the LED street lamp color rendering index of 75 or more, from the visual psychological point of view, to achieve the same brightness, LED lights average illumination 20% lower than high-pressure sodium lamp, (refer to British standards lighting standard);
5, LED street lamp light decay, a year of light failure less than 3 [%], the use of 10 years still reach the road illumination requirements, and high-pressure sodium lamp decay, about a year or so has dropped 30% above, therefore , LED lights in the use of power design can be lower than the high-pressure sodium lamp;
6, LED lights have automatic control of energy-saving devices that can meet the lighting requirements in different periods, the maximum possible reduction of power, save energy
7, LED is a low-voltage device, driving a single LED voltage for the safe voltage, a series of single LED power is 1 watt, so it is a safer power supply than the use of high-voltage power supply, especially for public places (for example: Lighting, mining lighting, automotive lighting, civil lighting, etc.)
8, each unit LED chip has only a small volume, it can be prepared into various shapes of the device, and is suitable for volatile environments. The company is located in:
9, long life: can use 50,000 hours or more, providing three years of quality assurance. The downside is that the power of life can not be guaranteed.
10, high luminous efficiency: the use of chips ≥ 100LM, relative to the traditional high-pressure sodium lamp energy-saving 75%.
11, easy to install: no need to add buried cable without rectifier, etc., directly to the street lamp cap mounted on the light source or the lamp nested nested.
12, excellent thermal control: summer temperature control at 45 degrees below, and the use of passive cooling, thermal protection in summer is insufficient.
13, Reliable quality: all the power supply circuit using high-quality components, each LED has a separate over-current protection, without fear of damage.
14, uniform light color: No lens, not to increase the brightness and sacrifice uniform light color, so as to ensure that no aperture light color uniform.
Based on the above principle, high-power LED street lamp energy-saving effect is significant, instead of high-pressure sodium lamp can save more than 60 [%]. To be considered Low maintenance costs: Compared with traditional street lamps, LED street lamp maintenance costs are very low, after comparison, less than 6 years to recover the full cost of investment.