The feasibility analysis for the retrofitting of LED street lights

1, the feature of LED street lamp itself - — The unidirectional light, no light diffusing, guarantee the light efficiency; 2, LED street lamp has a unique secondary optical design, LED street lamp light to the lighting area, further improve the efficiency of the light, in order to achieve energy saving

1, the characteristic of LED street lamp itself - — The unidirectional light, no light diffusing, guarantee the light efficiency; 2, LED street lamp has a unique secondary optical design, LED street lamp light to the lighting area, further improve the efficiency of the light, in order to achieve energy-saving purpose; 3, LED light source efficiency is 100 lm/W, also has the very big development space, and the theoretical value of 250 lm/W. And high pressure sodium lamp luminous efficiency was increased with the increase of power, therefore, is better than high pressure sodium lamp LED street lamp lighting in general; 4, LED street lamp light color is higher than high pressure sodium lamp, high-pressure sodium lamp only around 23, color rendering index and the LED street light color rendering index above 75, think in terms of visual psychology, to achieve the same brightness, LED street light can, on average, more than 20% lower than the high-pressure sodium lamp, LED lights, With reference to the British sense lighting standards) ； 5, LED street lamp light failure is small, light failure is less than 3% a year, still meet the requirements of road use illuminance to 10 years, and high pressure sodium light failure is big, has fallen by more than 30% a year or so, therefore, the LED street light on the design of the use of power can be lower than the high-pressure sodium lamp; 6, LED street light automatic control and energy saving device, can realize under the condition of meet the requirements of different times lighting the biggest possible to reduce the power, save electric energy; 7, the LED is low voltage devices, drive voltage for the safety of the single star LED, LED series products single star power for 1 w, so it is a safer than using high voltage power supply, power supply, especially suitable for public places, For example, street lighting, industrial lighting, automotive lighting, lighting, etc. ) ； 8, each unit LED small pieces only a small volume, so can be prepared into various shapes of the device, and is suitable for variable environment. 9, long service life: can use more than 50000 hours, provide quality assurance for three years. 10, high light efficiency: the use of more than 100 lm or chips, compared with traditional high pressure sodium lamp energy saving more than 75%. 11, installation is simple: don't need to add buried cable without rectifier, such as street light lamp installed on light pole can directly be connected to or nested original lamp shell. 12, the cooling control well: summer temperature control at about 45 degrees, and USES the passive cooling way. 13, reliable quality, power supply circuit are all made of high quality components, each LED have over-current protection alone, without having to worry about damage. 14, light color uniform: without lens, not sacrifice uniform light color, in order to improve the brightness to ensure no aperture light color evenly. Comprehensive the above principle, high-power LED street lamps, energy-saving effect is remarkable, instead of high pressure sodium lamp to the saving electricity was above 60%. Low maintenance cost: compared with the traditional street light, LED street lights maintenance cost is extremely low, through the comparison, less than 2 years to recover all costs.