After years of years of long torches, candles, and kerosene lamps, humans finally creatively stepped into the era of using electricity as an illumination source. According to the principle of illumination, it has passed through three stages of development: incandescent lamp, fluorescent lamp (including electronic energy-saving lamp) and semiconductor lamp (LED).
LED as a new darling born in the extreme energy shortage, due to its many advantages, will certainly surpass the era of incandescent lamps, fluorescent lamps, and lead the wave of the third lighting revolution.
The LED is a DC drive. In the case of the same lighting effect, the power consumption is only 1/9 of the incandescent lamp and one-fifth of the fluorescent lamp. LEDs are cold light sources that generate little heat during use, thus saving a lot of power.
LED is a cold light source illumination, low voltage, small current, does not rely on heat and light, its service life is up to 50,000-100,000 hours. For outdoor high-power lighting street lamps, in the early stage, the one-time input costs of cables and poles can be greatly reduced.
Generally, the second-generation lighting fixtures using the principle of high-pressure (vacuum) gas discharge are filled with toxic substances such as mercury, and the replaced wastes cause secondary environmental problems. The neon lamp filled with inert gas is very fragile, and often has short arms and fewer legs, which brings another kind of light pollution to the urban landscape. The LED is solid-emitting, small in size, free of pollution, and the waste can be recycled and reused. There is no ultraviolet light or infrared light in the spectrum, no radiation, no heat. Contains no toxic by-products that may harm health and damage the environment. It is a true green lighting.
The concept of green lighting was proposed by foreign countries in the late 1980s. China's green lighting was implemented in 1996. The important step is to promote high-efficiency energy-saving lighting products, save lighting power, and reduce environmental pollution and light pollution.
LED has been widely used in stations, terminals, machine tasters, hospitals, hotels, securities markets and other public places for lighting, as well as the landscape, street lighting, landscape art lighting. According to media reports: Beijing Water Cube has created the world's largest LED landscape lighting precedent.
In order to seize the commanding heights of the future, the world's three major lighting industry giants such as General Electric, Philips, and Osram will cooperate with semiconductor companies to set up LED lighting companies with the goal of increasing LED luminous efficiency by 8 times and reducing prices by 2010. %.
We have every reason to believe that LED will be the leader in the third revolutionary wave of lighting sources.
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