Lighting fixtures can be classified according to the use of light sources, installation methods, use of the environment with the use of functions, the following are several representative classification methods.
Classified according to the light source used
There are mainly incandescent lamps, fluorescent lamps, high-intensity gas discharge lamps and so on
Classified according to the installation method of the lamp
The main chandeliers, ceiling lamps, wall lamps, embedded lamps, dark slot lamps, table lamps, floor lamps, luminous ceiling, high pole lights, lawn lights, etc.;
According to the lamp design of the support surface material classification
According to the support surface material of the lamp design, it can be divided into mobile lamps and hand lamps, fixed lamps suitable for installation on the surface of ordinary combustible materials and fixed lamps only suitable for installation on the surface of non-combustible materials, and flammable materials are not suitable for direct installation of lamps
Only lamps with the F symbol can be suitable for mounting directly on the surface of ordinary combustible materials.
Classified according to the special site use environment
According to its special place use environment, lamps can be divided into dust, moisture, corrosion, fire danger and explosion danger and other places to use lamps;
According to the function of the lamp
According to this classification method, there are roughly the following categories:
1. According to the classification of dust, solid foreign matter and waterproof grade GB7000.1-2002 "Lamps general safety requirements and tests" (equivalent to IEC60598-1:1999), the protection grade classification of lamps is composed of "IP" and two characteristic numbers.
The first characteristic number after IP refers to the protection level to prevent the human body from touching or approaching the live part inside the shell and prevent foreign matter from entering the inside of the shell.
The second digit after IP refers to the level of protection that prevents water from entering the interior of the luminaire housing;
2. According to the type of protection against electric shock classification
In order to ensure electrical safety and the normal work of the lamp, all live parts of the lamp (including wires, joints, lamp holders, etc.) must be protected with insulation or additional shielding, and the method and degree of protection affect the use of the lamp and the use of the environment. This measure of personal safety is called protection against electric shock.
IEC has a clear classification of lamps and lanterns protection against electric shock, national village GB7000.1-2002 "Lamps and lanterns general safety requirements and tests" stipulates that the types of lamps and lanterns protection against electric shock are divided into 0, I, II, III four categories;
3. Classification according to optical characteristics or functions
(1) According to the recommendations of the International Lighting Commission, indoor lamps. It can be divided into five types: A, B, C, D and E according to the distribution of light flux in the upper and lower space.
(2) The UK is divided into ten types according to the distribution of light intensity in the lower hemisphere, and the light intensity distribution curve of class BZ is given.
(3) Classification of lamps according to 1/2 illumination Angle,
(4) Classification of floodlights: floodlights are classified by the size of the beam Angle. Beam Angle refers to the Angle between 1/10 of the maximum light intensity of the lamp.
Beam Angle can be divided into horizontal and vertical two kinds, sometimes because of light distribution asymmetry, vertical and horizontal beam Angle can also have up, down and left, right.
The main light intensity (or peak light intensity) of the floodlight refers to the maximum light intensity of the lamp, which can be found from the light distribution curve. Under normal circumstances, the light intensity value is given in the case of 1000lm, and the absolute light intensity value of the lamp can be obtained by conversion.
