Why the installation position of the solar street lamps have strict requirements?

Traffic lights commonly when we install solar street lamps manufacturers require must choose to accept the sunshine without shade, stronger direction, is this why? It is determined by the mechanism of solar power. There are two forms of solar power is a kind of light

when we install solar street lamps, traffic signal lamp manufacturers usually requires they must choose one from the occluded and can receive the direction of the sun. Why is this? This is decided by the mechanism of the solar power. There are two forms of solar power. Is a solar-thermal power conversion model, namely the solar collector will absorb the light energy and heat energy is converted into steam ( Heat) The steam to drive a turbine to generate electricity. This method need a second transformation. This utility model low efficiency, high cost, only for small special occasions, for solar street lamps system did not use value. The second kind of solar power generation mode is photoelectric direct conversion mode ( Is also a solar street lamp system of power generation mode) , the use of solar cells convert the heat energy produced is solar radiation directly into electricity. Specifically, the photovoltaic effect of solar cells to generate electricity, namely, p-type and n-type semiconductor semiconductor together to form a P - N junction. Under the condition of the same irradiation, the accumulation of positive and negative charges will be on both sides of the p-n junction is formed, resulting in a light voltage and form a built-in electric field. When both sides of the electrode in the built-in electric field and connect the appropriate load derivation, will form the current and will get the load power. This is the generating mechanism of solar street light system. To realize the importance of solar power equipment is solar panels. Its power generation efficiency is proportional to the accept sunshine intensity and time. No light or short irradiation time will seriously affect the solar power. We require the installation of solar street light system, therefore, the position and Angle must not keep out, and can completely resist the sunshine, so solar street light system can give full play to its efficiency. Solar power generation solar street lamps