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LED Street Lights Manufacturers Design Standards And Lighting Requirements

LED street light is different from conventional street light. The LED light source is low-voltage DC power supply, high-efficiency white light synthesized by GaN-based power type blue LED and yellow. It has high efficiency, safety, energy saving, environmental protection, long life, fast response, high color rendering index, etc. Unique advantages can be widely applied to the road. High temperature resistance up to 135 degrees and low temperature resistance up to -45 degrees. Led street lights Manufacturers(CLASSIC) have the following requirements for design:

1. The most important feature of LEDs for illumination is the function of directional emission of light, because power LEDs are almost always equipped with reflectors, and the efficiency of such reflectors is significantly higher than the reflector efficiency of the lamps. In addition, the efficiency of the self-reflector has been included in the LED efficacy detection.

Road luminaires using LEDs should utilize the characteristics of directional emitted light of LEDs as much as possible, so that each LED in the road luminaire directly directs the light to each area of ??the illuminated road surface, and then uses the auxiliary light distribution of the luminaire reflector to realize Very reasonable light distribution for road lamps.

In the luminaire, a good secondary light distribution function can be realized by designing the mounting position of each LED and the direction of the emitted light according to the height of the road lamp and the width of the road surface. Reflectors in such luminaires are only used as an auxiliary three-time light distribution to ensure better uniformity of road illumination.

2. The power system of LED street light is different from the traditional light source. The constant current driving power supply required by LED is a cornerstone to ensure its normal operation. The simple switching power supply scheme often brings damage to LED devices.

How to make a group of LEDs tightly compressed together is also an indicator of LED street lights. The requirement of the LED for the driving circuit is to ensure the characteristics of the constant current output. Because the relative change region of the junction voltage is small when the LED is working in the forward direction, the constant driving current of the LED ensures that the output power of the LED is constant. For the current situation of unstable supply voltage supply in China, it is necessary to have a constant current output characteristic of the driving circuit of the road lamp LED, which can ensure the light output is constant and prevent the super power operation of the LED.

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