About LED overview

LED (Light-Emitting-Diode in Chinese means light-emitting diode) is a semiconductor that can convert electrical energy into visible light. It changes the principle of tungsten filament luminescence of incandescent lamp and three-primary color luminescence of energy-saving lamp, and electroluminescence is adopted. According to analysis, the characteristics of LED are very obvious, long life, high luminous efficiency, no radiation and low power consumption. The spectrum of LED is almost entirely concentrated in the visible light frequency band, and its luminous efficiency can reach 80-90%.

Comparing LEDs with ordinary incandescent lamps, spiral energy-saving lamps and T4 and T5 three primary color fluorescent lamps, the results show that the luminous efficiency of ordinary incandescent lamps is 12LM/W, the life span is less than 2000 hours, and the luminous efficiency of spiral energy-saving lamps is 40LM/W. The lifespan is less than 4000 hours, and the T4 and T5 fluorescent lamps are 80LM/W, and the lifespan is about 80,000 hours; while the ordinary high-brightness white LED with a diameter of 5 mm has a luminous efficiency of 28-30LM/W, and the imported super bright diameter is 5 mm. The LED luminous efficiency is 80-90LM/W. Jiangsu Senfa Street Lamp Manufacturing Co., Ltd. applies high-efficiency heat dissipation technology to imported ultra-bright white LEDs and encapsulates them as integrated high-power luminous light sources. Its luminous flux can reach 80-100LM/W, and its lifespan can be greater than 100,000 hours. It has been used in solar lamps for many years. Use, the effect is very ideal. Integrate a few high-power LEDs into a lamp holder and use them on a solar street lamp with a height of 8-14 meters. The luminous brightness exceeds 400W ordinary high-pressure sodium lamps.

Most people believe that energy-saving lamps can save energy by 30% is a great innovation, but LED is 70% more energy-saving than energy-saving lamps, which is a greater reform of solid light sources. In addition, LED also has other advantages, high light quality, basically no radiation, is a typical green lighting source; reliable and durable; maintenance costs are extremely low and so on. It is precisely because LEDs have the above-mentioned characteristics that other solid-state light sources cannot match, LEDs will be the mainstream light source in the lighting industry in 5 years.

With low power consumption and exceptional service life, LEDs are widely used in weak current fields such as signal indication and digital display. Now, the successful development of ultra-bright LED makes it more and more used in the lighting industry. The advantages of LED’s high luminous efficiency and low heat generation have gradually replaced traditional lighting sources, and have received widespread attention from the industry.

In short, LED lamps have the following characteristics:

★ High efficiency and energy saving   only a few kilowatts of electricity per thousand hours (ordinary 60W incandescent lamp consumes 1 kilowatt of electricity in 17 hours, ordinary 10W energy saving lamp consumes 1 kilowatt of electricity in 100 hours)
★ Ultra-long life semiconductor chip emits light, no filament, no glass bulb, not afraid of vibration, not easy to break, and the service life can reach 50,000 hours (the service life of ordinary incandescent lamps is only 1,000 hours, and the service life of ordinary energy-saving lamps is only 8,000 hours. )
★ Healthy light The light does not contain ultraviolet rays and infrared rays, and does not produce radiation (normal light rays contain ultraviolet rays and infrared rays)
★ Green and environmental protection   does not contain harmful elements such as mercury and xenon, which is conducive to recycling and utilization, and will not cause electromagnetic interference (ordinary lamps contain elements such as mercury and lead, and electronic ballasts in energy-saving lamps will cause electromagnetic interference)
★ Protect eyesight   DC drive, no stroboscopic (ordinary lights are AC driven, stroboscopic will inevitably occur)
★ High light efficiency and low heat generation, 90% of the electric energy is converted into visible light (80% of the electric energy of ordinary incandescent lamps is converted into heat energy, and only 20% of the electric energy is converted into light energy)
★ High safety factor   the required voltage and current are small, the heat is small, and no safety hazards are generated. It can be used in dangerous places such as mines
★ Great market potential   low voltage, DC power supply, battery, solar power supply can be used, it can be used in remote mountainous areas and outdoor lighting and other places with lack of electricity.

Post time: Jun-03-2019