The influence of low temperature on the service life is mainly manifested in the difficulty of lamp startup and low light output. When the ambient temperature is lower than - 10 ℃, the mercury vapor pressure in the lamp tube is too low, and the gas discharge is very difficult. The lamp tube will not start normally. At this time, the electronic circuit is still working, and the components will not be able to withstand excessive power and burned. When the ambient temperature is low, even if it can be started, the light output of the lamp will be very low, which can not meet the lighting requirements.
The influence of high temperature on the service life is mainly manifested in the greatly reduced service life of the lamp. Generally, the maximum working temperature of components is 105 ℃ (for example, the service life of electrolytic capacitor is 1000 hours when the temperature is 105 ℃). When the ambient temperature is higher than 50 ℃, the ambient temperature in the plastic shell will be higher. In addition, the temperature of the electronic components enclosed in the lamp will exceed 100 ℃ due to the baking of the lamp tube and the heating of the components themselves. The components will not be able to withstand the high temperature for a long time and burn. In addition, if the ambient temperature is too high, the light output of the lamp will also be greatly reduced.