According to the Ming function, the high bay light can be divided into general lighting and partial lighting. General lighting is usually evenly placed on the upper or side wall of the work site. Lighting the entire working surface requires the use of high-power incandescent lamps, tungsten halogen lamps, high-intensity discharge lamps or a large number of fluorescent lamps. Most of the mining lamps are of this type. Generally, the illumination lamp has high requirements on the distribution of light, and two types of light distributions, direct illumination type and semi-direct illumination type, are widely used, especially the latter. Part of the semi-direct lighting type illuminates the ceiling, which increases the brightness of the ceiling and creates a more comfortable and brighter environment. A partial illuminator is a luminaire that increases the illumination of a working part. Its function can be to strengthen and supplement the lighting on the basis of general lighting, or in some places that do not need lighting (such as equipment maintenance and maintenance places) as temporary lighting. Most of their light distribution is not strictly regulated. Partial illuminators are usually installed near the work area to use incandescent and tungsten halogen lamps with safety extra low voltage (≤50V, AC rms) as the light source. There are (hand-held) line lights, hanging lights, work table lamps, machine work lights, and so on. In some tall buildings, spotlights are sometimes used for local illumination. According to the light source, the mining lamp can be divided into traditional light source mining lamp (such as sodium lamp mining lamp, mercury lamp mining lamp, etc.) and LED high bay lamp. Compared with the traditional industrial and mining lamp LED high bay light has great advantages: 1 LED high bay light indicates high RA>70 2 LED industrial and mining lighting efficiency, more energy-saving, equivalent to 100W LED high bay light can replace the traditional 250W traditional mining lamp. 3 Traditional light sources have the disadvantage of high temperature of the lamps, and the lamps can reach temperatures of 200-300 degrees. The LED itself is a cold light source, and the lamp has a low temperature and is safer. 4 LED high bay light in constant innovation, the latest fin-type radiator mining lamp more reasonable radiator design, greatly reducing the weight of industrial and mining lamps, so that the overall weight of 80W LED high bay light has dropped below 4KG, and Perfectly solve the heat dissipation problem of 80-300W LED high bay light. steel and metal fire doors,front entry steel doors,front entry metal doors Shengyi Door Co., Ltd. , http://www.china-security-door.com