The classification method of the emergency led lights is varied, there is a type of method in accordance with the type of species.

Emitting diode structures stars. Structure of the light-emitting diode sub-structure of the full epoxy encapsulation, metal base epoxy package, ceramic base epoxy packaging and glass packaging.

Luminous intensity and current points. Luminous intensity and operating current of ordinary brightness LED (light emitting intensity 100mcd); luminous intensity in 10 to 100mcd called high-brightness light-emitting diode. General LED current over 10 mA to tens of mA, low current rechargeable lights operating current below 2mA (the ordinary brightness light-emitting tube).

Light color of the light tube. A, according to the light tube light color, can be divided into red, orange, green, yellow-green, standard green and pure green (subdivision), Blu-ray. In addition, some of the light emitting diode chip contains two or three colors. B, according to the light emitting diode light at the doped or non-doped scattering agent, colored or colorless, the various colors of the light emitting diode can also be divided into a colored transparent, colorless and transparent, the colored scattering and colorless scattering four types. Scattering light-emitting diode and an indicator.

LED lights light-emitting tube features a smooth. A, high directivity. Generally pointed epoxy package, or with a metal reflector cavity packages, and does not add a scattering agent. The half-value angle of 5 ° ~ 20 ° or less, having a high directivity, can be used for local illumination light source, or to form an automatic detection system associated with the photodetector. B, standard type. Usually used for light, its half-value angle of 20 ° to 45 °. C, scattering Type. This is a larger viewing angle of light, half-value angle of 45 ° ~ 90 ° or more, a large amount of scattering agents.