With the progress of the times and technology, lamps and lanterns are also developing rapidly. Nowadays, there are mainly 3 kinds of electric lamps on the market: incandescent lamps, energy-saving lamps and LED energy-saving lamps. It is possible that many people know that there are such lamps, and that the effect of energy saving is in turn LED energy saving lamp, energy saving lamp and incandescent lamp. But the principle in it must not be understood by everyone.
Ordinary incandescent light efficiency is about 10 lumens per watt, life is about 1000 hours, its working principle is: when the lamp is connected to the circuit, current through the filament, the thermal effect of the current, the incandescent lamp emits a continuous visible light and infrared ray, this phenomenon in the filament temperature up to 700K can be perceived as when the filament temperature is very high, most of the energy in the form of infrared radiation is wasted, because the filament temperature is high, the evaporation is also very fast, so life is also greatly reduced, about 1000 hours; on the energy saving point of view, the traditional incandescent lamp with infrared energy loss as well as a large number of high fever, life is short, the introduction of advanced energy saving lamp is a necessary power saving revolution.
In contrast, energy-saving lamp is mainly for lamp filament heating through the ballast, at about 1160K temperature, the filament began to emit electrons (because the filament painted some electronic powder), non elastic collision of argon atom electron collision, argon atom collision energy and impact were obtained after Mercury, mercury atoms in transition energy absorption after ionization, a 253.7nm ultraviolet, UV excited phosphor, fluorescent lamp work due to the temperature of the filament at about 1160K, much lower than the temperature of 2200K-2700K incandescent lamp work, so it''s life is improved, and the energy consumption level, life can reach 5000 hours, because the current thermal effect it does not exist as incandescent lamp, energy conversion efficiency of phosphor is also very high, reaching more than 50 lumens per watt.
LED (Light-Emitting-Diode, Chinese light-emitting diode) is a semiconductor that can transform electric energy into visible light. It changes the principle of luminescence of incandescent lamp tungsten filament and three primary colors of energy saving lamp, and uses electric field luminescence. Because the LED is used as luminescent materials using solid semiconductor chip, and we used in the daily life of the bulb is made by metal luminescent materials, so the energy emitted by the different, according to relevant statistics, a red LED light required for consumption reaches a certain brightness when energy is 15 watts, while the traditional light bulb to achieve the same measure to consume up to 150 watts; in addition to the scientists measured LED, electroluminescence, 10% of the electrical energy can be converted into energy, while the conversion efficiency of incandescent bulbs only 7-8%, thus, to achieve the same effect of lighting, LED lamps than incandescent lamp energy saving is obviously. The.
According to the analysis, the characteristics of LED are very obvious, long life, high light efficiency, no radiation and low power consumption. The spectrum of LED is almost all concentrated in the visible band, and its luminous efficiency is more than 150lm/W (2010). LED and the ordinary incandescent lamp, energy-saving lamps and T5 three spiral fluorescent lamp were compared, results show that the optical efficiency of ordinary incandescent lamp is 12lm / W, the life of less than 2000 hours, the light effect spiral energy-saving lamp is 60lm / W, the life of less than 8000 hours, T5 fluorescent lamp is 96LM / W, life for about 10000 hours, the white LED light effect and 5 mm diameter more than 150lm / W, life can be more than 100000 hours. It is also predicted that the future LED lifespan will be infinitely large and will certainly dominate the market.