led street lights are coming
Europe began replacing incandescent lamps
Traffic lights based on higher energy
Efficient solid state light, LED has taken the streets.
The LED at that time was not strong enough to be used for street lighting.
LED technology has improved over the past period.
Now more and more street lamp projects choose LED light source.
High Pressure Sodium and Mercury Steam gradually occupy the market. Why LED? 1)
High energy efficiency.
Today, the power efficiency of the LED exceeds 100lm/w.
In most street lamp projects, the power efficiency of the LED is 65-80lm/w.
It is much higher than the 30lm/w of the Mercury Steam lamp. 2)Eco-friendly.
LED lighting is solid state lighting. 3)Long Lifetime.
The life of the LED is 50,000-100,000 hours.
The LUXEON Rebel LED test used by Philips.
Luxon Rebel LED is stacked with two main lighting techniques for street lighting, high pressure sodium and mercury vapor.
The results are as follows: luxon Rebel High Pressure Sodium Mercury evaporation flux (lm)
Power consumption of 3325 5510 4340 67W 90W 138WSystem effect (lm/W)
50 61 31 average Lux 14 19 14 utilization rate 0. 0042 0.
0032Lux/W 0. 21 0. 21 0.
10 Min/Lux ratio 0. 40 0.
32 0. 23Lifetime (hours)
10,000 from the above data, we can find the following results. 1).
Low power consumption-
LED street light (67W)
Energy saving 52% on Mercury Steam lamps (138W)
And high pressure sodium lamp 26% (90W)2).
Higher power efficiency
LED street light exceeds 31 lm/W of mercury vapor.
You can find higher efficacy measurements from high pressure sodium lamps.
It\'s just misleading because it includes wasted light, which in turn wastes energy.
In the market, many of the power functions of LED street lamps can reach 80lm/w. 3).
More Lux per watt-
More than double the Mercury Steam street light.
The equivalent measurement of high-pressure sodium lamps is distorted by hot spots that raise the lux rating but cause unpredictable visibility, safety, and glare issues. 4)
More uniform distribution of light (0. 40)
More than high pressure sodium and mercury vapor.
The LED scene is the only scene in the three scenes that matches the European street light guide.
Because it can guide the light precisely. 5)
Longer life (60,000 hours)-
The life of the LED can be converted into a life expectancy of 10 to 15 years.