1. LED light source has high luminous efficiency
Comparison of luminous efficiency: incandescent lighting effect is 10-15lm, halogen tungsten light effect is 12-24 lumens / watt, fluorescent lamp 50-90 lumens / watt, sodium lamp 90-140 lumens / watt, most of the power consumption becomes heat loss.
LED light effect: can be sent to 50-200 lumens / watt, and the illumination has good monochromaticity, narrow spectrum, no filtering, and can directly emit colored visible light.
2. LED light source consumes less power
LED single tube power 0.03-0.06 watts, using DC drive, single tube drive voltage 1.5-3.5 volts. The current of 15-18 mA reflects the speed and can be operated at high frequency. In the case of the same lighting effect, the power consumption is one ten thousandth of the incandescent lamp, one-half of the fluorescent tube, Japan estimates, if adopted LEDs that are twice as efficient as fluorescent lamps replace half of Japan's incandescent and fluorescent lamps, saving up to 6 billion liters of crude oil per year. The same effect of a fluorescent lamp is more than 40 watts, while the power of each LED is only 18 watts. .
3. LED light source has a long service life
Incandescent lamps, fluorescent lamps, and tungsten halogen lamps are characterized by electronic light field radiation, filament light-emitting, heat deposition, light attenuation, etc. The LED lamps are small in size, light in weight, and encapsulated in epoxy resin, which can withstand high mechanical shock and Vibration, not easy to break, the average life expectancy is 3-5 million hours, LED lamp life can reach 3-5 years, can greatly reduce the maintenance cost of lamps to avoid frequent lamp replacement.
4. Strong safety and reliability
Low calorific value, no heat radiation, cold light source, safe to resist, can accurately control light type and illuminating angle, light color and no glare, no mercury, sodium and other substances that may be harmful to health.
5. LED light source is environmentally friendly
LED is an all-solid-state illuminant, impact-resistant and non-breakable, waste-recyclable, non-polluting, reducing the generation of harmful gases such as sulfur dioxide and nitride, and the generation of greenhouse gases such as carbon dioxide. It can be called "green lighting source."
There are currently three kinds of white LED technology: one is to use the three primary color principle and the three kinds of ultra-high brightness LEDs that can be produced, such as red, green and blue, to be mixed in light ratio of 3:1:6 to form white, two kinds, and use super Highly InGan blue LED, the tube is always added with a little pomegranate-based phosphor, which can produce yellow-green light under blue light excitation, and this yellow-green light can synthesize white light with the exposed blue light. Light LEDs use ultraviolet light-activated trichromatic phosphors or other phosphors to produce white light mixed in multiple colors.
6. LED light source is more energy efficient
Of course, energy saving is the most important reason for us to consider the use of LED. Maybe LED is more expensive than traditional light source, but it takes one year's energy saving to recover the investment of light source, thus obtaining several times of energy saving net closing period in 4-9 years.
Constant current source driving is the best LED driving method. It uses constant current source to drive. It does not need to connect current limiting resistors in the output circuit. The current flowing through the LED is not affected by external power supply voltage changes, ambient temperature changes, and discrete LED parameters. The influence is such that the current can be kept constant and the various excellent characteristics of the LED can be fully utilized.
LED constant current power supply is used to supply power to LED lamps. Since the current flowing through the LEDs is automatically detected and controlled during power supply operation, there is no need to worry about excessive current flowing through the LEDs during power-on, and there is no need to worry about load short-circuiting. Bad power supply.