I.LED energy-saving lamp is a new generation of lighting source after compact fluorescent lamp.
Leds, or semiconductor light-emitting diodes, are solid-state semiconductor devices that convert electricity directly into light. LED energy-saving lamp is a white LED light source with high brightness, high efficiency, low power consumption, long life, easy to control, maintenance free, safety and environmental protection; It is a new generation of solid cold light source, the light color is soft, gorgeous, rich and colorful, low loss, low energy consumption, green environmental protection, suitable for family, shopping mall, bank, hospital, hotel, hotel and other public places. No flash direct current, good protection for eyes, the best choice for lamp and flashlight.
LED, LED heart is a semiconductor chip, one end of the chip attached to a bracket, one end is a negative pole, the other end is connected to the positive pole of the power supply, the whole chip is encapsulated by epoxy resin. A semiconductor chip consists of two parts, one is a p-type semiconductor, in which the holes are dominant, the other is an n-type semiconductor, and the other is dominated by electrons. But when the two semiconductors are connected, they form a p-n junction. When a current passes through the wire on the chip, the electrons are pushed into the p-zone, where they recombine with the hole and emit energy as photons, which is how leds glow. Because LED lamps do not generate much heat, they convert electrical energy into light energy as much as possible. However, ordinary lamps generate a lot of heat and convert a lot of electrical energy into heat energy, which is wasted. LED lighting, by contrast, is energy efficient.
As a category of LED general lighting, LED energy-saving lamp derives its name from traditional lighting bulb lamp and energy-saving lamp. The appearance of LED energy-saving lamps is similar to that of traditional energy-saving lamps, which can meet the traditional aesthetics of consumers. LED energy-saving lamp features: low cost, high luminous efficiency, large luminous area, no glare, no ghosting.
1. High efficiency and energy saving: compared with the same brightness, 3W LED energy-saving lamp consumes 1 kilowatt hour in 333 hours, while ordinary 60W incandescent lamp consumes 1 kilowatt hour in 17 hours and ordinary 5W energy-saving lamp consumes 1 kilowatt hour in 200 hours.
2, long life: semiconductor chip light, no filament, no glass bubble, not afraid of vibration, not easy to break, service life can reach 50,000 hours (ordinary incandescent lamp service life is only 1,000 hours, ordinary energy-saving lamp service life is only 8,000 hours).
3, health: light healthy light contains less ultraviolet and infrared radiation (ordinary light line contains ultraviolet and infrared radiation).
4. Green environment protection: free of harmful elements such as mercury and xenon, which is conducive to recycling. Common lamp tubes contain mercury, lead and other elements.
5, vision protection: dc drive, no stroboscopic (ordinary lamps are ac driven, will inevitably produce stroboscopic).
6, high light efficiency: a company in the laboratory high photosynthetic efficiency has reached 260 lm/W, and the single star on market has reached 100 lm/W high power LED, LED bulbs, due to loss of power efficiency, the light of the lamp shade loss, actual photosynthetic efficiency in 60 lm/W, and incandescent lamp is only 15 lm/W, good quality energy-saving lamps at around 60 lm/W, so in general, the LED energy-saving lamps lighting and energy-saving lamps flat or slightly better. (data in May 2011)
7, high safety coefficient: the required voltage, current is small, small safety hazards, in the mine and other dangerous places.
8. Great market potential: low voltage, dc power supply, battery power supply, solar power supply, in remote mountainous areas and outdoor lighting and other places with low power supply.
III.The characteristics :
1. Energy conservation. The energy consumption of white LED is only 1/10 of that of incandescent lamp and 1/4 of that of energy-saving lamp. (when the rectifier loss is not considered, the energy consumption of most products in the market is labeled value ×1.2 ~ 2)
Longevity. Average life can reach more than 50,000 hours, the ordinary home lighting is "once and for all".
3. Can work at high speed. CFLS that turn on or off the filament too often will darken and quickly break down.
4, solid state packaging, belongs to the type of cold light source. So it's easy to transport and install and doesn't fear vibration.
5. LED technology is making rapid progress with each passing day. Its luminous efficiency is making amazing breakthroughs, and its price is constantly decreasing. An era of leds entering the home is fast approaching.
6, environmental protection, no harmful substances of mercury. The assembled parts of LED bulbs can be easily dismantled and assembled, and can be recycled by others without the manufacturer's recycling.
7. Light distribution technology expands LED point light source into surface light source, increases luminous surface, eliminates glare, sublimates visual effect, and eliminates visual fatigue.
8. Integrated design of lens and lamp shade. At the same time, the lens has the function of focusing light and protecting light, avoiding the repeated waste of light, making the product more simple and beautiful.
9. High-power LED planar cluster package, and integrated design of radiator and lamp holder. Fully guarantee LED cooling requirements and service life, fundamentally meet the arbitrary design of LED lamp structure and shape, very distinctive characteristics of LED lamps.
10. Remarkable energy saving. With ultra-bright high-power LED light source and high-efficiency power supply, it can save more than 80% electricity than traditional incandescent lamp, and its brightness is 10 times that of incandescent lamp under the same power.
11, long life of more than 50,000 hours, is more than 50 times the traditional tungsten lamp. LED adopts high and reliable advanced packaging technology -- eutectic welding, which fully guarantees LED's long life.
12. No strobe. Pure dc work eliminates visual fatigue caused by strobe of traditional light source.
13. Go green. No lead, mercury and other pollution elements, no pollution to the environment.
14, shock resistance, strong resistance to thunder, no ultraviolet (UV) and infrared (IR) radiation. No filament and glass shell, no traditional lamp cracking problem, no harm to human body, no radiation.
15. Working under low thermal voltage, safe and reliable. Surface temperature ≤60℃ (ambient temperature Ta=25℃).
Wide voltage range, universal. 85V~ 264VAC full voltage range constant current, ensure life and brightness is not affected by voltage fluctuation.
17. PWM constant current technology is adopted, with high efficiency, low heat and high constant current accuracy.
18. Reduce line loss and no pollution to the power grid. Power factor ≥0.9, harmonic distortion ≤20%, EMI meets global index, reduces power loss of power supply lines and avoids high frequency interference pollution to power grid.
19. The universal standard lamp holder can directly replace the existing halogen lamp, incandescent lamp and fluorescent lamp.
20, luminous efficiency up to 801m/w, a variety of color temperature optional, high color rendering index, good color rendering.