How about solar garden lights?
LED light source efficiency has now reached 90-110LM/W, and there is still great room for development, the theoretical value of 250lm/W. The luminous efficiency of high pressure sodium lamp is only increased with the increase of the power, therefore, the overall optical efficiency of LED road lamp holder is better than high voltage sodium lamp; (the overall efficiency of light is theoretical, light effect actually more than 250W high pressure sodium lamp is higher than that of LED).
LED road lamp light a small decline, a year decline of less than 3%, 10 years still reached the road illumination requirements, and high pressure sodium lamp failure, a year has decreased by more than 30%.
LED road lamp light color is much higher than that of high pressure sodium lamp, high pressure sodium lamp color index is only about 23, while the LED road lamp cap color index reached more than 75, from the point of view of visual psychology, achieve the same brightness, illumination LED road lamp holder on average than HPS decrease by 20%, (with reference to the British sense lighting standard).
LED road lamp holder has unique two times optical design, illuminating the light of LED road lamp head to the required lighting area, and further improving the lighting efficiency, so as to achieve the purpose of energy saving.
The characteristics of the LED lamp head itself, the unidirectional of light, no diffusion of light ensure the illumination efficiency.
