
From the above data, it is not difficult to find the broad prospects of LED lamps in the global market. This mainly depends on the advantages of LED lights:
1, small size: LED is basically a very small chip is encapsulated in epoxy resin, so it is very small, very light.
2, low power consumption: LED power consumption is very low, in general, LED operating voltage is 2-3.6V. The operating current is 0.02-0.03A. This means that it consumes no more than 0.1W of electricity.
3, long service life: In the appropriate current and voltage, LED's life can reach 100,000 hours 4, high brightness, low heat 5, environmental protection: LED is made of non-toxic materials, unlike fluorescent lamps containing mercury will cause Pollution, while the LED can also be recycled.
6, durable: LED is completely encapsulated in epoxy resin, it is stronger than the light bulb and fluorescent tubes. There are no loose parts in the lamp body. These features make the LED unbreakable.
However, LED lamps also have some disadvantages:
1. The problem of heat dissipation will greatly shorten the life if the heat is not good.
2. The low-end LED lamp is still less energy-efficient than the energy-saving lamp (cold cathode tube, CCFL).
3, the initial purchase cost is higher.
4, due to the strong direction of the LED light source, the lamp design needs to consider the special optical characteristics of the LED.
Even with these drawbacks, the intrinsic characteristics of the LED determine that it is the ideal light source to replace the traditional light source, and it has a wide range of uses:
Initially, LED was used as the indicator light source for instrumentation. Later, various light-colored LEDs were widely used in traffic signals and large-area displays, resulting in good economic and social benefits. Take the 12-inch red traffic signal as an example. In the United States, a long-life, low-efficiency, 140-watt incandescent lamp was used as the light source, which produced 2,000 lumens of white light. After passing through the red filter, the light loss was 90%, leaving only 200 lumens of red light. In the newly designed lamp, Lumileds uses 18 red LED light sources, including circuit losses, and consumes a total of 14 watts, which produces the same light efficiency. Automotive signal lights are also an important area for the application of LED light sources. In 1987, our country began to install high-level brake lights on automobiles. Due to the fast LED response speed (nanoseconds), drivers of trailing vehicles can be made aware of driving conditions as soon as possible to reduce the occurrence of rear-end collisions. In addition, LED lights have been applied in outdoor red, green and blue full-color displays, keychain miniature flashlights and other fields.
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