What are the advantages of HPS lamps and what are they used for?
If the radiation condition is good, one thousand hours before the LED is light, ten thousand hours before the decline of 3%-10%, fifty thousand hours before the basic 30%; sodium specific measured value has a great relationship with the brand, the general situation is two months to five months would be scrapped.
LED street lamp is generally the market price of 4000-12000 yuan, but the price is now in continuous decline exponentially, with light as an example, a white tile price of 80LM than the first half of last year fell by as much as 6 yuan; if the domestic product is high and low pressure sodium lamp, generally a price of 2000 yuan. But like cables and accessories, the price is higher than the LED cable and so on.On the whole, two road and community lighting, with the LED more cost-effective, such as a highway, the current price ratio is not higher than the sodium lamp.
Color rendering: 70-80, if using three primary color phosphor is higher; high pressure sodium lamp is 25, low pressure sodium lamp is lower, is faint yellow, even if the total brightness is higher than LED, but the visual effect is worse than LED.
A single chip package of one watt white light LED up to 110LM, multi chip integrated package of light efficiency is currently only 55-70LM; high pressure sodium lamp is 120LM/W, low pressure sodium lamp is 140LM/W.
