According to the lighting function, it can be divided into general lighting and local lighting.

1. General lighting

Generally, the lighting lamps are usually arranged evenly on the top or side walls of the work site to illuminate the entire work surface. It is necessary to use high-power incandescent lamps, halogen tungsten lamps, high-intensity gas discharge lamps or a large number of fluorescent lamps. Of course, there are also Compared with energy-saving and high-power LED high bay lights, most of the high bay lights belong to this category. Generally, lighting lamps have higher requirements on the distribution of light, and two types of light distribution, direct lighting type and semi-direct lighting type, are widely used, especially the latter. Part of the light from the semi-direct lighting type illuminates the ceiling, which can increase the brightness of the ceiling and create a more comfortable and brighter environment.

2. Local lighting

Local lighting is a kind of lamps that improve the illuminance of a certain working part. Its function can be to strengthen and supplement lighting on the basis of general lighting, or it can be used as temporary lighting in some places that do not need lighting at ordinary times (such as equipment maintenance and maintenance places). There are mostly no strict regulations on their light distribution. Local lighting lamps are usually installed near the work area, using incandescent lamps and tungsten halogen lamps with safety extra-low voltage (≤50V, AC RMS) as the light source. There are (portable) running lights, hanging lights, work desk lights, machine tool work lights, etc. In some tall workshops, spot lights are sometimes used for local lighting.