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LED lighting technology

Views: 0     Author: Site Editor     Publish Time: 2021-02-03      Origin: Site


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LED lighting technology

LED lighting technology and characteristics

The so-called LED lamps, as the name implies, refer to lamps that use LED (Light-emitting Diode) technology as the main

White LED lamps

White LED lamps (16 photos)

The desired light source. LED is a solid-state semiconductor component that uses current to flow forward to the semiconductor pn junction coupling, and then the negatively charged electrons and positively charged holes separated from the semiconductor combine with each other to generate photons Emission, different types of LEDs can emit light of different wavelengths ranging from infrared to blue, and violet to ultraviolet. In recent years, the new development is to coat blue LEDs with phosphor to convert blue LEDs into white LED products. This operation generally requires an LED Driver or Power Supply. The main function of the driver circuit or power supply is to convert AC voltage to DC power and complete the voltage and current that match the LED. , To drive the matched components.

The bulbs of LED lamps are small in size, light in weight, and encapsulated in epoxy resin, which can withstand high-strength mechanical shocks and vibrations, are not easily broken, and have a long brightness decay cycle, so their service life can be as long as 50,000-100,000 hours, far beyond the traditional 1,000 hours for tungsten bulbs and 10,000 hours for fluorescent tubes. Since the useful life of LED lamps can reach 5 to 10 years, it can not only greatly reduce the cost of lamp replacement, but also because of its characteristics that it can drive light with a very small current. Under the same lighting effect, the power consumption is only One-half of the fluorescent tube, so LED also has the advantages of power saving and energy saving. However, because some of the LED technology is still insufficient, the disadvantages of the initial use of the lamps include poor light quality (color rendering, consistency, color temperature), difficult heat dissipation, and high price. In addition, improper heat dissipation will cause As a result, the brightness of LED lamps and the service life of circuit components accelerate attenuation. Manufacturing technology is advancing by leaps and bounds. The above-mentioned shortcomings include the gradual decrease in thermal resistance of LEDs and the improvement of light quality. In 2008, in addition to the luminous efficiency of LED white cold light has reached 100 Lm/W, and the luminous efficiency of LED warm white light is expected to increase from 70 Lm/W to 100 Lm/W in 2010. Compared with other general light sources, the tungsten bulb is about 15 Lm/W, the fluorescent tube lamp is about 45~60 Lm/W, and the HID lamp is about 120~150 Lm/W. The luminous efficiency of LED has obviously gradually gained advantages; the following is for Comparison of LED and other common lamps:

Lighting method features

White light LED has less heat source, wide operating environment, miniaturization, vibration resistance, concentrated beam

Daylight (fluorescent) lamps. Fluorescent lamps save electricity, but the waste is fragile and has mercury pollution problems.

Incandescent tungsten bulb Low efficiency, high power consumption, short life, fragile

Ningbo ZEHAI lighting Co., LTD is a company engaged in design, development, manufacture, and marketing of LED lighting fixtures and solar lighting products with first-class technology.

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