Energy-saving and sustainable development is no longer a selective issue, but a necessary way for the future development of today's world. The replacement of traditional light sources with new light sources represented by LEDs is triggering a huge revolution in the lighting industry. Driven by innovative technologies, this new light source lighting product is constantly being updated, from incandescent lamps to energy-saving lamps, halogen lamps to LED lamps. While lighting products have achieved energy-saving upgrades, they have also improved comfortably Lighting effects are also more diverse. As a representative of green energy-saving light sources, LED lighting has become the hottest industry hot spot. Compared with more mature light sources, what are the leading advantages of LED? Here I will briefly introduce to you.
12 unique advantages of LED lighting
In 1923, the scientist OWLossew discovered that the PN junction of silicon carbide has unidirectional conductivity and luminescence; around 1955, RJHaynes proposed a PN junction research report on semiconductor germanium, and GAWolff studied the luminescence of gallium phosphide ; In 1968, American Monsanto and HP produced red LED for the first time, making LED formally an electronic product to enter the market.
(1) Energy saving: Almost all of the LED spectrum is concentrated in the visible light band, and its luminous efficiency can reach 80-90%. The author also compared the LED with ordinary incandescent lamps, spiral energy-saving lamps and T5 three-color fluorescent lamps. The results show that: ordinary incandescent lamps have a light efficiency of 12lm / w, life is less than 2000 hours, and spiral energy-saving lamps have a light effect of 60lm. / w, life is less than 8000 hours, T5 fluorescent lamp is 96Alm / w, life is about 10000 hours, and white LED with a diameter of 5 mm is 20-28lm / w, life can be more than 100,000 hours. Some people also predict that the upper limit of LED life in the future will be infinite.
Most people think that energy-saving lamps can save energy by 4/5, which is a great initiative, but LEDs also save energy by 1/4, which is a greater reform of solid-state light sources. In addition, LEDs have other advantages, such as high light quality and basically no radiation, which is a typical green lighting source; reliable and durable, extremely low maintenance costs and so on. It is precisely because LED has the characteristics that other solid light sources can not match, LED will be the mainstream light source in the lighting industry in 10 years.
(2) Safety and environmental protection: The working voltage of LED is low, mostly 1.4-3V; the working current of ordinary LED is only 10mA, and the ultra-high brightness is only 1A. LEDs do not add "mercury" in the production process, nor do they need to be inflated, do not need a glass shell, have good impact resistance, good shock resistance, are not easily broken, are easy to transport, and are very environmentally friendly. They are called "green energy".
(3) Long service life: The LED is small in size and light in weight. The shell is encapsulated in epoxy resin, which not only protects the internal chip, but also has the ability to transmit light and condense light. The service life of LEDs is generally between 50,000 and 100,000 hours, because LEDs are semiconductor devices, and even frequent switching will not affect the service life. At present, incandescent lamps, fluorescent lamps and energy-saving fluorescent lamps are mainly used in home lighting.
(4) Fast response speed: The response frequency fτ of the LED is related to the lifetime τmc of the injected minority carrier. For example, the LED made of GaAs material, whose τmc is generally in the range of 1-10ns, the response frequency is about 16-160MHz, Such a high response frequency is sufficient for displaying a 6.5MHz video signal, which is also one of the key factors for realizing a large video LED screen.
At present, the lowest LED response time has reached 1 microsecond, generally a few milliseconds, about 1/100 of the response time of ordinary light sources. Therefore, it can be used in many high-frequency environments, such as car brake lights or status lights, which can shorten the braking time of vehicles behind the car, thereby improving safety.
Page 2: Powerful advantages of LED light source
(5) High luminous efficiency: the light efficiency of incandescent and tungsten halogen lamps is 12-24lm / w (lumens / watt), the light efficiency of fluorescent lamps is 50-70lm / w, and the light efficiency of sodium lamps is 90-140lm / w. Most of the power consumption becomes heat loss. The LED light efficiency can be improved to 50-200lm / w, and the monochromatic light is good, the spectrum is narrow, and colored visible light can be directly emitted without filtering.
(6) The small size of the LED component: it is more convenient for the layout and design of various devices, and can better achieve the effect of "seeing the light but not the light source" in night scene lighting.
(7) High concentration of LED light energy: concentrated in a smaller wavelength window with high purity.
(8) Strong directivity of LED light emission: brightness attenuation is much lower than traditional light sources.
(9) LED low voltage direct current can be driven: it has the advantages of small load and weak interference, and has low requirements for the use environment.
(10) Can better control the luminescence spectrum composition: so that it can be well used for local or key lighting in museums and exhibition halls.
(11) The size of the forbidden band of the semiconductor light-emitting layer and semiconductor material can be controlled: thus emitting various colors of light, and the chroma is higher.
(12) High color rendering: no harm to human eyes.
Written at the end: As an emerging technology field, the semiconductor lighting industry is still in a stage of rapid development, technological progress makes us feel happy, but we must also realize that whether it is the technical link or the industry's rules and regulations, compared with traditional light sources , Are still immature and unsound. There is still a long way to go before realizing the replacement of traditional light sources with LEDs. I believe that by promoting the healthy and orderly development of the entire industry, gradually accelerating the pace of application and gradually transforming traditional industries, and advancing the adjustment of industrial structure, it will certainly open Energy-saving and green quality life.
Application fields of solar panels:
1. User solar power supply: (1) Small power supply ranging from 10-100W, which is used for military and civilian life in remote areas without electricity, such as plateaus, islands, pastoral areas, frontier posts, etc., such as lighting, TV, tape recorders, etc.; (2) 3 - 5KW home roof grid-connected power generation system; (3) Photovoltaic water pump: solve deep water well drinking and irrigation in areas without electricity.
2. Transportation field: such as navigation lights, traffic/railway signal lights, traffic warning/sign lights, Yuxiang street lights, high-altitude obstruction lights, highway/railway wireless telephone booths, unattended road shift power supply, etc.
3. Communication/communication field: solar unattended microwave relay station, optical cable maintenance station, broadcast/communication/paging power system; rural carrier telephone photovoltaic system, small communication machine, GPS power supply for soldiers, etc.
4. Petroleum, marine, and meteorological fields: cathodic protection solar power systems for oil pipelines and reservoir gates, domestic and emergency power supplies for oil drilling platforms, marine testing equipment, meteorological/hydrological observation equipment, etc.
5. Lamp power supply: such as garden lamps, street lamps, portable lamps, camping lamps, mountaineering lamps, fishing lamps, black light lamps, rubber tapping lamps, energy-saving lamps, etc.
6. Photovoltaic power station: 10KW-50MW independent photovoltaic power station, wind-solar (firewood) complementary power station, various large parking plant charging stations, etc.
7. Solar buildings: Combining solar power generation with building materials will enable large buildings in the future to achieve self-sufficiency in electricity, which is a major development direction in the future.
8. Other fields include (1) Supporting cars: solar cars/electric cars, battery charging equipment, car air conditioners, ventilation fans, cold drink boxes, etc.; (2) Solar hydrogen production plus fuel cell regenerative power generation system; (3) Sea water Power supply for desalination equipment; (4) Satellites, spacecraft, space solar power plants, etc.
photovoltaic solar panels, solar panel system, mono perc solar panel, bifacial solar panels,commercial solar panels
Ningbo Autrends International Trade Co., Ltd. , https://www.china-energystorage.com