Comparison of LED Ratoru,
sodium-vapor lamp and mercury lamp
Comparison of the power consumption
400w
500w
Comparison of the
400w
power consumption
300w
200w
75% DOWN
200w
100w
0w
100w
LED Street Light
Sodium -vapor
Ratoru 100W
Mercurylamp
lamp
LED Ratoru can be taken out the brightness equal in the power
consumption of less than 1/2 of a sodium - vapor lamp , and less
than 1/4 of a mercury lamp, so LED street light will be reduced
in significant energy cost.
Comparison of the electricity charges
5
※Lighting up 12 hours a day and it s being calculated by 20 yen per 1kW/h
35,040 円
4
Comparison of
the electricity
charges!!
3
17,520 円
2
1
00
75% DOWN
8,760 円
LED Street Light
Ratoru 100W
Sodium - vapor
lamp
Mercury lamp
As shown in an upper chart, if changing it to LED RATORU,
its possible to cut costs the electric charges as much
as 75% comparison of mercury lamp , and also 50% can be
reduced compared with sodium - vapor lamp.
Comparison of lamp life expectancy
Illumination （％）
100
80
LED Street Light Ratoru 100W
50000hours
60
Soddium - vapor lamp
40
Mercury lamp
20
0
10000
20000
30000
40000
50000
60000
【 H/hour 】
LED street lights Ratoru
last longer than 4 times
the mercury and,2 times
sodium-vapor lamps!!
A mercury lamp： It will be an illumination zero in 12,000 hours.
Sodium - vapor lamp： It will be an illumination zero in 24,000
hours.
LED street light RATORU 50W： Even if 50,000 hours is passed
the illumination can be secured 70%!