Solar street lighting projects are led street lamps, weaknesses?

As an internal practitioners, solar street lamps for some industry professionals and even solar led street lamp manufacturers, blindly promote solar street lamps energy-saving environmental protection, do not need electricity, construction is convenient, and many other advantages, and for solar street lamps in the

as the interior of the practitioners, solar street lamps for some business people in the industry, even the solar led street lamp manufacturers, they blindly publicity and many of the advantages of solar street lamps, such as energy conservation, environmental protection, no electricity, construction is convenient, etc. However, they introduce the disadvantages in the development of solar street lamps, even belies their deeply ignorant. This paper summarizes the problems existing in the current development of solar street lamps. Please consult the solar street light users and operators. As the main light source of solar street lights, LED lamps and lanterns is mainly the LED chip quality problem, heat problem, light distribution, packaging, power drive, electronics, life issues, etc. Its main effects include: (for solar street lamps system 1) LED lights once the damage to the overall change: on-site maintenance difficulties, than the traditional light source, easy to change. ( 2) Solar street lamps light source system heat dissipation: light-emitting diode chip at the same time in the glowing let out a lot of heat. Light emitting diode light efficiency and decreased with the increase of junction temperature. At present, the junction temperature rise every 20 ℃, the light efficiency can reduce about 5%, the life of the light emitting diode chip and optical attenuation will be badly affected. Therefore, light source parts of heat dissipation is a key problem to consider. At present, the led street lamp cooling pattern mainly has: traffic signal lamp pole manufacturer of natural convection, increasing the fan, forced heat dissipation of the loop heat pipe and heat pipe. Fans forced cooling system is complex, low reliability, high heat pipe and the way of the loop heat pipe cooling costs. At present, the total light power of the solar street light system is not high, the advantages of solar street lamp is night in outdoor use, radiating surface is located in the side, small size limit, benefit to air natural convection. At present, generally choose the way to natural convection. At present the main problem is that many manufacturers recommend to customers many solar street lights are equipped with solar street lamp cap, because chip packages within the lamp shell, heat dissipation is very adverse effect of light source. To determine the shape of the lamp shell, please be sure to share this with the customer to consider. ( 3) Led street lamp light distribution problem: led lighting refers to the led chip in the number of points in the light. There are a lot of light, so you need to set up the secondary light distribution system. The rationality and scientific nature of light distribution and there are many way to go. ( 4) The configuration and the relationship between the price of solar street light system, this is because at present the country has not been perfect solar street light system national unified standard, each manufacturer in accordance with the standards of their own products, not only can't exchange with each other, and there are some bad companies steal concept, shoddy, damage the interests of consumers. ( 5) Solar street lamps system confused life and the life of the led light source, cheat consumer. At present, the service life of the led chip is up to 50000 hours, a good life has more than 100000 hours. However, solar street lamps system also includes such as battery, solar street light controller, light pole, solar panels and other components. Every part of life is different. The key is battery and solar street lamps controller. At present, the better one can reach more than three years, and the poor a cannot achieve two years. This will increase the cost of customers using the system. Therefore, the customer must consider system parts service life (solar street lamps My company in previous has been summarize some Mr Zhang in the related aspects of the situation, you can consult) 。