1. LED explosion-proof light source, the life of high-quality LED light source can reach 100,000 hours;
2. The protection level of LED explosion-proof lamp mainly depends on whether the shell has good waterproof performance, dustproof, anti-corrosion and explosion-proof performance;
3. LED explosion-proof lamp drive power, the better the power quality, the lower the loss of LED light source;
4, LED explosion-proof lamp heat dissipation performance.
In addition, the service life of LED explosion-proof lights is also related to the daily use and maintenance of users. Next, the editor will continue to introduce the dimming technology of LED explosion-proof lamps.
1. In the early stage of promotion of LED explosion-proof lights, in order to achieve the purpose of dimming and energy saving, drawing on the concept of interval lighting, the LED chips of a group of LED explosion-proof lights are divided into two parts, and the driving current is controlled to pass and turn off respectively. At midnight 12 Before 12 o'clock, all LED explosion-proof lights are lit, and half of them are turned off after 12 o'clock to realize energy saving. This dimming method can achieve a certain energy-saving effect. Compared with the traditional interval lighting mode, the lighting uniformity is significantly improved, but it will affect the light distribution curve of the LED explosion-proof lamp. In order to further improve the light efficiency and light distribution curve of LED lamps, some LED lamp manufacturers consider arranging LED chips in a spaced manner. When dimming, only the interval is completed or extinguished, which improves the uniform light distribution to a certain extent.
2. Analog dimming mode or linear dimming mode: The advantage of this dimming mode is that when the driving current increases linearly or decreases linearly, the influence of the overshoot of the driving current on the LED chip is relatively reduced, and the control circuit has a strong resistance. Interfering ability. The disadvantage is that the size of the driving current will have a certain impact on the color temperature of the LED chip.
3. Pulse completion modulation (PWM) mode: This mode makes the drive current a square wave shape through a certain control, and its pulse width is variable. The pulse width adjustment changes the time that the LED explosion-proof lamp remains on, and also changes the output power to achieve the purpose of saving energy. The frequency is usually controlled at 200Hz to 10kHz. Due to the maintenance of human vision, the flicker of the light source will not be felt during the photosensitive process. The advantage of this dimming method is that it improves the heat dissipation of the LEDs. The disadvantage is that the overshoot of the driving current has a certain influence on the life of the LED chip.
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