1. High luminous efficiency of LED light source
Luminous efficiency comparison: incandescent light effect is 10-15lm, halogen tungsten light effect is 12-24 lumens/watt, fluorescent lamp is 50-90 lumens/watt, sodium lamp is 90-140 lumens/watt, and most of the power consumption becomes heat loss.
LED light efficiency: it can emit 50-200 lumens/watt, and has good monochromaticity and narrow spectrum. It can directly emit colored visible light without filtering.
2. Low power consumption of LED light source
LED single tube power is 0.03-0.06W, DC drive is adopted, and single tube drive voltage is 1.5-3.5V. The current of 15-18 mA is fast and can be operated at high frequency. When used with the same lighting effect, the power consumption is one ten thousandth of that of incandescent lamps and one half of that of fluorescent tubes. Japan estimates that if half of Japan's incandescent lamps and fluorescent lamps are replaced by LEDs with light efficiency twice higher than that of fluorescent lamps, the annual oil saving is equivalent to 6 billion liters. A fluorescent lamp with the same effect consumes more than 40 watts, while the power of each LED is only 18 watts.
3. Long service life of LED light source
Incandescent lamps, fluorescent lamps and tungsten halogen lamps are characterized by electronic light field radiation, easy burning, thermal deposition, light attenuation, etc., while LED lamps are small in size, light in weight, and encapsulated with epoxy resin, which can withstand high-strength mechanical shock and vibration, and are not easy to break, with an average life of 30000 to 50000 hours. The service life of LED lamps can reach 3-5 years, which can greatly reduce the maintenance cost of lamps and avoid the pain of frequent lamp replacement.
4. Strong safety and reliability
Low calorific value, no thermal radiation, cold light source, safe touch, accurate control of light type and luminous angle, light color, no glare, no mercury, sodium and other substances that may endanger health.
5. LED light source is beneficial to environmental protection
LED is an all solid luminous body, which is impact resistant and not easy to break, recyclable waste, pollution-free, and can reduce the generation of a large number of harmful gases such as sulfur dioxide and nitrogen, as well as greenhouse gases such as carbon dioxide to improve people's living environment. It can be called a "green light source"
At present, there are three technologies for producing white LED: one is to mix the red, green and blue ultrahigh brightness LEDs that can be produced by using the three primary color principle and the ratio of light intensity 3:1:6 to form white; the other is to use the ultrahigh InGan blue LED, with a small amount of phosphor based on yttrium diamond garnet on the tube assembly, which can generate yellow green light under the excitation of blue light, and this yellow green light can synthesize white light with the transparent blue light; the third is non ultraviolet LED, Ultraviolet light is used to excite three primary phosphors or other phosphors to produce white light mixed by multi colors.
6. LED light source is more energy-saving
Of course, energy conservation is the main reason why we consider using LED. Perhaps LED is more expensive than traditional light sources, but it takes one year of energy conservation to recover the investment in light sources, so that we can obtain several times of the annual net energy conservation coverage period in 4-9 years.