What are the advantages of LED corn light compared with traditional high pressure sodium lamp?

Now with the development of urbanization, the city slow lane, narrow lane, residential area, scenic spots, parks, squares and other public places of outdoor lighting are starting to phase out the traditional high pressure sodium lamp.LED corn light can be used as a light source of courtyard lamp, street lamp, etc. LED corn light is one of the most popular products  in all LED lighting products .
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From some technical parameters from the LED luminous efficiency indeed higher than high pressure sodium lamp.TEK LED corn light up to 130Lm/W, the  light efficiency of high pressure sodium lamp is about 100-120Lm/W.High pressure sodium lamp spectrum comparison focused on yellow, its low colour temperature only about 2000K, LED corn light color temperature is higher, can reach more than 6000 k.Also, high pressure sodium lamp color rendering index is poor, only 20-40, feel the dark, LED corn light has high color rendering index, can reach more than 80, so use LED corn lamp as light source of street light, can feel very bright, let a person feel comfortable. So from the perspective of the luminous effect , LED corn light is more perfect than high pressure sodium lamp.


Light failure of High pressure sodium light is big, decline 30% a year or so.And high pressure sodium lamp's theory life is short, the average life expectancy for 20000 hours, the actual may only 6-7000 hours.So expect that 50W LED corn light can take the place of 150Whigh pressure sodium lamp.50 w TEK LED corn light output flux is about 7500 lm, light failure is about 5-8% a year or so .And the output of the 150 w high pressure sodium lamp luminous flux is 16500 lm, after a year only 11500 lm. 

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