Low power LED street light instead of the cause of the high power high pressure sodium lamp

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LED technology matures, the use of LED street light region is also more and more, the number of using high pressure sodium lamp is gradually reduced. Because LED lights low energy consumption, energy conservation and environmental protection. With low power LED street light can take the place of high power high pressure sodium lamp, has great economic benefits. Besides the LED street light price is not expensive, at the same time, has the very high cost performance. Then it'll be asked & other; Why low power LED street light can take the place of high power high pressure sodium lamp? ” Here are street lamp manufacturers take you know the reason.

high pressure sodium lamp belongs to the point light source, is the degree of light. Little light actually applied to the irradiation direction and only about % about. So high pressure sodium lamp must be through the lamps and lanterns of the light reflex reflector will not illuminate direction, to achieve the purpose of the use of higher light. As a result of the design of street lamps and lanterns and cost issues, sodium lamps and lanterns only - efficiency %。 And LED street lamp belongs to the surface light source, shiny surface for a single direction, high utilization rate of light source, lamps and lanterns efficiency reaches more than %. Say so, you may still not sure what, let's W LED street light and W high pressure sodium lamp, for example, to illustrate the problem.

. W LED street light initial luminous flux lm. Because lens loss %, %, power loss that the luminous flux of lamps and lanterns is actually a lm, the total power consumption of lamps and lanterns is W. So this LED street lamp lighting for lm/W.

. Initial luminous flux for lm, W high pressure sodium lamp source using loss %, the power loss %, lamps and lanterns of luminous flux actual lm, that the total power consumption of lamps and lanterns is W. So this high pressure sodium lamp for lighting. lm/W。

contrast through the above analysis it is concluded that the ultimate photosynthetic efficiency value, we can find that W LED street lamp lighting is almost W high pressure sodium light efficiency of The Times. So we can infer that why low power LED street light instead of the cause of the high power high pressure sodium lamp. With the progress of science and technology, many street lamps factory is also in constant development and improvement of LED technology, believe in the near future, not only LED street light efficiency of lamps and lanterns, LED street light price also will be more and more affordable!