The average illuminance of the road surface is one of the evaluation indexes of traffic road and pedestrian road lighting, and it is also an important reference index for how to design and configure solar led light outdoor. LEDsolar led light outdoor manufacturer is a solid-state cold light source, which has the characteristics of environmental protection, no pollution, low power consumption, high luminous efficiency, and long life. Therefore, LEDsolar led light outdoor will become the choice of road lighting energy-saving transformation. LEDsolar led light outdoor is a high-efficiency solid-state light source based on a semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, it injects holes in the P area and injects into the N area. After the electrons diffuse into the active area, they recombine through radiation to emit photons, which directly convert electrical energy into light energy. In order to use the solar LED solar led light outdoor to configure or replace urban or rural roads, the calculation of lighting related indicators should first be considered. LEDsolar led light outdoor is a high-efficiency solid-state light source based on a semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, it injects holes in the P area and injects into the N area. After the electrons diffuse into the active area, they recombine through radiation to emit photons, which directly convert electrical energy into light energy. The "utilization coefficient" method is a simple and effective method.

The formula calculated by the "utilization coefficient" method absolutely reflects the conclusions of traditional lighting theory research. What we have to do is to input some experimental or theoretical data of LEDsolar led light outdoor into the formula, get the result and compare it with the requirements of the road lighting design standard. It goes without saying that these calculations are also necessary for the design, development, improvement, improvement and marketing of LEDsolar led light outdoor.

　　1 concept

The utilization factor (u) is the ratio of the luminous flux directly irradiated on the road surface to the luminous flux emitted by all light sources, and it is related to the height, height, layout and width of the solar led light outdoor.

Luminous flux (π) is the sum of the energy emitted by the light source and the energy received by the human eye. Indicates how much light energy is radiated per unit time, in lm. Other expressions: cd.sr (cd is the unit of luminous intensity: candela. sr is the unit of three-dimensional angular surface degree.

Illuminance (E) is the proportional coefficient between the luminous flux and the illuminated area in LuxLX. 1Lx refers to the average luminous flux of 1lm distributed in the region of 1m2 energy (ie lm/m2).

The average illuminance of the road surface (EAV) is the average value of the illuminance of each point measured or calculated at the preset points on the road according to relevant regulations.

The maintenance factor (k) refers to the ratio of the average illuminance or average brightness on the specified surface to the average illuminance or average brightness obtained on the same surface when the equipment is newly installed under the same conditions after a period of use.

The installation height of the lamp (h) is the vertical distance from the light center of the lamp to the road surface.

The installation distance between lamps is the distance between two adjacent lamps measured along the centerline of the road.

The cantilever length (XL) is the horizontal distance from the center of the lamp of the lamp to the adjacent side edge, that is, the horizontal distance of the lamp extending or retracting the rim.

The effective width of the road surface (WEFF) is the theoretical width of the road surface used for road lighting design. It is related to the actual width of the road, the cantilever length of the lamps and the arrangement of the lamps.

　　2 Calculation formula

According to the definition of illuminance, e=<s>/a

(1) In the formula, A- irradiation area, M2

Average illuminance of road surface, Eav = F / (W * S)

(2) In the formula, the rated luminous flux of f-solar led light outdoor light source, lm;

The solar landscape light is a solar led light outdoor that uses solar energy as energy. LEDsolar led light outdoor manufacturer is a solid-state cold light source, which has the characteristics of environmental protection, no pollution, low power consumption, high luminous efficiency, and long life. Therefore, LEDsolar led light outdoor will become the choice of road lighting energy-saving transformation. LEDsolar led light outdoor is a high-efficiency solid-state light source based on a semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, it injects holes in the P area and injects into the N area. After the electrons diffuse into the active area, they recombine through radiation to emit photons, which directly convert electrical energy into light energy. It uses solar energy as a power source to provide night road lighting. LEDsolar led light outdoor is a high-efficiency solid-state light source based on a semiconductor PN junction that can emit light with weak electric energy. Under a certain forward bias voltage and injection current, it injects holes in the P area and injects into the N area. After the electrons diffuse into the active area, they recombine through radiation to emit photons, which directly convert electrical energy into light energy.

As long as sunlight can be installed on site, it is called a green product because it does not pollute the environment. The lamp pole and battery are combined in an integrated design, with wind resistance, intelligent charging and discharging, microcomputer lighting, and time control technology.