There are 4 key points to help you choose led street light heads :
1.Luminous efficiency
Led technology becomes more and more mature, and high-power LED sources can meet the needs of general led street light heads. ormally luminous efficiency is 130LM / W , Use big brand LED chips can reach 160-170LM / W, such as Philips , Cree , Osram led sources . the higher luminous efficiency, the better energy saving . This is one of the most important indicators for choosing led street light heads . However, there is no clear stipulation in many led street light heads specifications , so you must carefully confirm this information when purchasing led street light heads.
2.Light decay
In order to reduce costs, some companies use hundreds of 0.5W low-power LED chip . However, the light attenuation of this low-power LED is very serious, the luminous flux reduces 20% every 1000 hours. led street light heads life span , it is not allowed to use a low-power LED chip. when use a high-power LED chip , the light attenuation will be much better.
3. Self-respect
Due to the high technical content and complex composition of led street light heads, some high-power light caps weight will far exceed than ordinary led street light heads , so the materials of led street light heads are more demanding. However, some manufacturers have reduced the weight of the led street light heads , from about 30 kg to about 10 kg , and the weight reduction has a further downward trend.
4.Heat dissipation
Because LED chip is a semiconductor component, its capability is affected by temperature, it will lose the meaning of lighting if luminous flux is reduced to 30% , its life is end . Good heat dissipation is an important performance. It is worth mentioning that many led street light heads manufacturers have adopted the leading heat dissipation technology.
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