First of all, if the width of the road is 20 meters wide, should be the main road, bilateral cloth lamp just goes.
Let’s say it’s a double-row symmetrical lamp, and the height of the lamp pole is at least 1/2 of the width of the road, so the height of the lamp pole is 12 to 14 meters.
If 14 meters lamp pole is used, the installation distance of street lamp is about 3 times the height of lamp pole, so the spacing is at least 40 meters.
At a distance of 40 meters and a height of 14 meters, in this case, the power of LED street lamps should be more than 200W, which can basically meet the requirements of the main road lighting.
Road lighting requirements: mainly including lighting requirements, lighting uniformity requirements two.
The uniformity is generally more than 0.3, and the greater the uniformity, the better the lighting effect is.
1, conventional lighting: the lamps and lanterns is installed in the height of 15 m usually under a streetlight, according to certain spacing between continuous set regularly in the side of the road, on both sides, or intermediate points on a vehicle lighting a way. When this lighting method is adopted, the longitudinal axis of the lamp is perpendicular to the road axis, so that most of the light emitted by the lamp is directed to the longitudinal axis of the road.
2. High-pole lighting: a lighting method of a group of lamps installed on a lamp pole with height equal to or greater than 20m for large area lighting. (for example: at the crossroads of the road, 20 lamps and lanterns are installed on a lamp pole to illuminate all intersections.
3. Semi-high bar lighting: a lighting method for a set of lamps installed on a lamp pole with a height of 15-20m. When lamps and lanterns are arranged according to the conventional lighting method, they are conventional lighting. When the lamp is configured according to the way of high bar lighting, it belongs to high bar lighting.