What are the classification of commonly used electric light sources for LED industrial and mining lamps?
Date: 2016-07-06 11:17:45 Hits: 430

What are the commonly used classification of LED mining lamp electric light? Where can be converted to other forms of energy into light energy, thereby providing the luminous flux of equipment and utensils are collectively referred to as light source; which can convert electrical energy into light energy, thereby providing the luminous flux of equipment is known as electric light source. The electric light source commonly used are: heat emitting electric light source (such as incandescent lamps, halogen lamps etc.); the gas discharge light electric light source (such as fluorescent lamp, mercury lamp, sodium lamp, metal halide lamp); the solid light emitting light source (such as LED and electroluminescent devices, etc.). In these three kinds of electric light source, has a larger difference between the luminous efficiency of all kinds of electric light source, thermal electroluminescent light sources such as incandescent lamp, which utilizes the Stephen Boltzmann law object: the higher the temperature is, the more energy it radiates. This can be expressed by the formula E=μ ξ T4. In the formula, E represents the total radiation energy per unit area and unit time in the body temperature within T; μ said Stephen Boltzmann constant (μ =5.6697× 10-12W/ (cm2· K4)); ξ said emissivity, the ratio of surface emissivity and blackbody radiation ability; T represents the absolute temperature object. The electric light source made by using the principle of thermal luminescence has the advantages of simple fabrication and low cost, but the luminous efficiency is low, and the rest of the energy is consumed in the form of heat. The luminous efficiency of

incandescent lamp for general 7~20lm/W, the luminous efficiency of only 11%, infrared, thermal energy consumption accounted for 69%, 20%; most of the energy is the heat loss. The gas discharge light emitting devices, such as fluorescent lamps (Florescent) (Halide), metal halide lamp, high intensity discharge lamp (HID) luminous efficiency of heat radiation electric light source such as gas discharge light emitting device would be much higher, dozens of times their luminous efficiency for ordinary incandescent lamp, in general, can gradually replace the heat radiation source with gas discharge light source with high luminous efficiency. Because the power of the gas discharge lamp can be larger (several kilowatts), and the luminous efficiency is high, the utility model is a green illuminating electric light source.

due to gas discharge lamp electric light source in the luminous efficiency and service life of the lamp is the incandescent lamp so There is nothing comparable to this advantage, from its birth date has been widely concerned by people, the derived products can be described as colorful. At present, there are about 5000 kinds of electric light sources on the market. The heat radiation electric light source is represented by common incandescent bulb and halogen tungsten series bulb. The gas discharge electric light source mainly refers to arc discharge, electric light source and glow discharge electric light source, such as fluorescent lamp, high intensity gas discharge lamp and neon lamp, etc.. Arc discharge electric light source can be divided into low pressure discharge electric light source and high intensity discharge electric light source.

low pressure gas discharge light source with fluorescent lamps and energy-saving lamps; high intensity discharge electric light source with high pressure mercury lamp, high pressure sodium (foreign and low pressure sodium lamp and metal halide lamp as the representative). For example, the luminous efficiency of high pressure sodium lamp is 8~10 times of incandescent lamp, long service life, stable performance, high luminous flux maintenance rate, lighting applications applicable to color requirements of the road, square, dock and indoor tall plant, warehouse and other places.

metal halide lamp has high luminous efficiency, good color rendering property, large power, suitable for theatre, assembly shop and other large area lighting application places. The single end compact fluorescent lamp has a luminous efficiency of 50lm/W. Using a 9W, life of 3000~5000h energy-saving lamp can replace 40W incandescent lamp fluorescent lamp; luminous efficiency of double ends straight tube type T12 for 55lm/W, 3000~5000h and T5 for life, now the fluorescent lamp luminous efficiency up to 90~110lm/W, life of up to 8000~10000h. In recent years, many other types of new electric light sources have been continuously developed and developed, such as excimer light sources (ELS), microwave light sources, and solid light sources (such as LED). The solid light source, such as light-emitting diodes, light emitting devices such as plasma, despite their high luminous efficiency, yet can not get high power (e.g. 100 watts), so the solid light emitting device to enter the large-scale practical stage and a distance, according to the analysis in recent years, the traditional electric light source will be the mainstream (such as incandescent lamp and fluorescent lamp etc.).

(1) gas discharge light source according to the division of

discharge arc discharge lamp. The gas discharge electric light source mainly uses the arc discharge column to produce light. The cathode works at a higher temperature, so it is also called a hot cathode lamp. The gas discharge electric light source usually needs special starting device and circuit to work, and the electric light source mainly has fluorescent lamp, mercury lamp, sodium lamp and so on. The

glow discharge lamp. The gas discharge electric light source produces light by glow discharge column, and the cathode temperature is not high when it is discharged, so it is also called cold cathode gas discharge electric light source. The anode to cathode voltage drop is larger (about 100V), and the current density is small. Neon lights belong to this category.

(2) divided by the

gas medium after the discharge current of the discharge lamp. Glow discharge using gas. Such as xenon lamp, fluorescent lamp and neon lamp etc..

metal vapor lamp. The use of metal vapor (such as mercury vapor, sodium vapor, etc.) to produce light, such as mercury vapor lamp, sodium lamp, etc..

(3) divided by the low level of

atmospheric pressure discharge lamp in lamp. When the discharge lamp pressure of 1% atmospheres, such as fluorescent lamp, low pressure sodium lamp

high pressure lamp. When discharging, the atmospheric pressure in the lamp is 1~5 atmospheric pressure, such as high-pressure mercury lamp, high pressure sodium lamp, high-pressure xenon lamp, etc.. The

ultra high pressure lamp. When the discharge lamp pressure is greater than 10 atmospheres, such as dysprosium lamp, sodium lamp, sodium lamp and scandium scandium.

which high-pressure mercury lamp luminous efficiency can reach 50lm/W, the color index of more than 65 Ra, temperature 4000~6000K, life can reach about 10000h, the power specifications are 35~3500W, has formed a series. The luminous efficiency of high pressure sodium lamp reaches 120lm/W, the color rendering index Ra is 25, the lifetime reaches 24000h, and the power specification is 30~1000W. HID lights emit only half the amount of halogen lamps, lamps life of more than 2500h. Fluorescent lamps are 70% more than incandescent lamps. They are suitable for indoor lighting applications in offices, dormitories and workshops with a ceiling height of less than 5m. The fluorescent efficiency of the compact fluorescent lamp is 5% higher than that of the ordinary fluorescent lamp, and the tubular fluorescent lamp saves 10% more than the ordinary fluorescent lamp. Therefore, the compact and the tubular fluorescent lamp are the ” implementation plan of the “ green lighting project.




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