LED street lights can guarantee better lighting effects

LED street lights can guarantee better lighting effects
In LED street light fixtures, a good secondary light distribution function can be achieved by designing the installation position of each LED and the target of the emitted light according to the height of the road fixture and the width of the road surface. The reflector in this type of luminaire is only used as an auxiliary three-time light distribution method to ensure a better uniformity of road illumination. The biggest feature of LED street lights is the function of directional light emission, because almost all power LEDs are equipped with reflectors, and the efficiency of such reflectors is significantly higher than that of lamps. In addition, the efficiency of the self-reflector has been included in the detection of the light efficiency of the LED lighting street lamp. When using LED road lights, the directional emission characteristics of LEDs should be manipulated as much as possible, so that each LED in the road luminaire can directly shoot the light to each area of u200bu200bthe illuminated road surface, and then operate the auxiliary light distribution of the luminaire reflector. To achieve a very reasonable comprehensive light distribution of road lamps. The power system of LED street lights is also different from traditional light sources. The constant current drive power required by LEDs is a cornerstone to ensure its normal operation. Simple switching power supply solutions often bring damage to LED devices. The requirement of the LED for the drive circuit is to ensure the characteristics of constant current output. Because the junction voltage is relatively small when the LED is working in the forward direction, the constant LED drive current is guaranteed to basically ensure the constant output power of the LED. For the current situation of constant power supply voltage supply in our country, it is very necessary for the driving circuit of the road lamp LED to have a constant current output characteristic, which can ensure the constant light output and prevent the overpower operation of the LED.