LED corn light compared with high-pressure sodium lamp

LED corn light can be used as the courtyard lamp, street lamp light source, mainly used in city slow lane, narrow lane, residential area, scenic spots, parks, squares and other public places of outdoor lighting and indoor lighting such as high shed light, industrial and mining lamp, replace the traditional high pressure sodium lamp and energy-saving lamp.


For now, the LED luminous efficiency on the number of it is not as good as high pressure sodium lamp. LED corn light at 120 lumens per watt, and high pressure sodium lamp can reach 110-120 lumens per watt.However, high pressure sodium lamp spectrum comparison focused on yellow, its low colour temperature contrast only about 2000 k, and the LED color temperature is higher, can reach more than 3000-4500 k.Also, high pressure sodium lamp color rendering index is poor, only 20-40, feel the dark;And LED high color rendering index, can reach more than 80.So the road surface bright, feel comfortable.So from the perspective of the luminous effect of actual, leds can be a lot higher than the high-pressure sodium lamp.High pressure sodium light failure, a fall of 30% a year or so.And high pressure sodium lamp's theory of life is short, the average life expectancy for 20000 hours, the actual may only 6-7000 hours.So expect the 54 w LED corn light can take the place of 135 w high pressure sodium lamp.50 w LED corn light output flux about 6000 lumens, 5-8% a year or so light failure.And the output of the 135 w high pressure sodium lamp luminous flux is 14800 lumens, 30% one time failure after only 10300 lm.Because it is very warm white to the road of low illumination, with 50 w about specific data to the beginning of October (results).

Here is a picture of LED corn light in a street lamp:

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