Basic characteristics of LED light source

After decades of technical improvement, the luminous efficiency of LED has been greatly improved. The luminous efficiency of incandescent lamps and tungsten halogen lamps is 12-24 lumens/watt, that of fluorescent lamps is 50-70 lumens/watt, and that of sodium lamps is 90- 140 lumens/watt, and most of the power consumption becomes heat loss. The light efficiency of the improved LED will reach 50 ~ 200 lumens/watt, and its light has good monochromaticity and narrow spectrum, and it can directly emit colored visible light without filtering. All countries in the world are stepping up the research on improving the light efficiency of LED, and its luminous efficiency will be greatly improved in the near future.

2. Low power consumption

The power of a single LED tube is 0.03 ~ 0.06W, and it is driven by DC. The driving voltage of a single LED lamp tube is 1.5 ~ 3.5V, and the current is 15 ~ 18mA, which has fast reaction speed and can work at high frequency. Under the same lighting effect, the power consumption is one-tenth of that of incandescent bulbs and one-half of that of fluorescent tubes. Japan estimates that if you replace half of incandescent lamps and fluorescent lamps in Japan with LEDs with twice the light efficiency of fluorescent lamps. It can save the equivalent of 6 billion liters of crude oil every year. Take the bridge guardrail lamp as an example, a fluorescent lamp with the same effect is more than 40 watts, while the power of each LED is only 8 watts, and it can be changed in 7 colors.

3, long service life

Using electron light field to radiate light, filament is easy to burn, thermal deposition, light attenuation and other shortcomings. LED lamps are small in size and light in weight, and are encapsulated by epoxy resin, which can withstand high-strength mechanical shock and vibration and is not easy to break. The average life span is 654.38+ million hours. The service life of LED lamps can reach 5 ~ 10 years, which can greatly reduce the maintenance cost of lamps and avoid the pain of frequent lamp replacement.

4. Strong security and reliability

Low calorific value, no thermal radiation, cold light source, safe touch: precise control of light type and light emitting angle, soft light color, no glare; Does not contain mercury, sodium and other substances that may be harmful to health. Built-in microprocessor system can control the luminous intensity and adjust the luminous mode to realize the combination of light and art.

5. It is beneficial to environmental protection.

LED is an all-solid-state luminous body, which is shock-proof and impact-resistant, not easy to be broken, and the waste can be recycled without pollution. The light source is small in size, can be combined at will, and is easy to develop into a light, thin, short and small lighting product, and is also convenient for installation and maintenance. Of course, energy saving is the main reason why we consider using LED light sources. Perhaps the LED light source is more expensive than the traditional light source, but it will take one year to recover the investment of the light source, and it will take several times a year to get the net benefit period of energy saving in 4 ~ 9 years.