High pressure sodium lamp compared with the performance of the led street lamp

Traditional high pressure sodium lamp, can realize the dimming control of a small scale, such as closing a side or interval closed street lamp, inevitably bring change in the form of lighting, easy to cause potential safety hazard. LED street light 0 - can be realized 100% continuous adjustable light, according to the environmental light and

the traditional high pressure sodium lamp dimming control can only achieve a small scale, such as closing a side or interval closed street lamp, it will inevitably bring illumination patterns change, easy to cause potential safety hazard. Light emitting diode lamp 0 - can be realized 100% continuous dimming, and can according to the ambient lighting and flexible adjustment of traffic light output, so as to ensure the quality of lighting, reduce unnecessary power consumption. In luminous efficiency, high pressure sodium lamp can only achieve 140 lumens per watt, highest power leds luminous efficiency of more than 250 lumens per watt, laboratory of 400 lumens per watt, color rendering index of light-emitting diode ( About 80) Far higher than that of high pressure sodium lamp ( About 25) 。 Under the same intensity of illumination, the white light of the led street light more help drivers or pedestrians to identify the target, the led street lamp lighting effect and comfort is far higher than that of high pressure sodium lamp. In terms of lamps and lanterns of lighting efficiency, high pressure sodium lamp adopts spherical lighting design, usually only 70% efficiency. When the led street lamp directional light, most of the light projected onto the pavement, directly led street lamp light efficiency can reach more than 90% of the total number of road traffic signal lamp. Another key advantage is that the led street light there is no high pressure sodium lamp of heavy metal pollution, belongs to the environmental protection of new energy-saving light source.