Analysis on Application of LED road lighting in China

In 2012, tracking China Academy of building research tested 44 semiconductor lighting project, including the national development and Reform Commission of semiconductor lighting demonstration project, cross-strait semiconductor road lighting project and daily commissioned road lighting. The detection of the main road 32, the overall pass rate of only 25%, the second road, the overall pass rate of 81%, the total rate of 12.

What led to the low rate of success of the project?

First, the luminous flux is not enough. The development of semiconductor lighting products application demonstration project of LED / road tunnel lighting products bidding for example, height 12m lamp installation, maintenance factor of 0.7, the largest single lamp luminous products for 14000lm, but to meet the main road lighting design, single lamp luminous flux is higher than that of the general requirements of 20000lm.

Two is the light distribution is not reasonable. For functional lighting, regardless of indoor lighting or road lighting, light distribution is very important. The light of the lamp is not good or bad, the evaluation criteria only match the use of place.

The distribution of light to a large extent determines the average brightness, the overall uniformity, longitudinal uniformity, glare and threshold value of the evaluation of the quality of road lighting parameters.

The light distribution and the lamp installation height, elevation, cantilever length and other conditions do not match the brightness of the longitudinal uniformity will be low.

It is an important problem to restrict the application of LED lighting products to the road lighting, because the environment is not meet the requirements and the threshold value is exceeded.

Dean Zhao put forward the concept of road lighting rectangular light brings this new concept, which is a great misleading for LED street lighting companies. Rectangular lighting may meet the requirements of the standard illumination, but not necessarily meet the standard brightness requirements. This is due to a lack of understanding of lighting requirements.

If the motor lane has a good light distribution design, non motorized vehicles can not even need to add additional lighting fixtures.

The development of road lighting from 08 years has made a qualitative leap, mainly reflected in: improving the overall focus on product performance; pay attention to the road lighting demand for light - light distribution function; focus on change of visual comfort needs - color temperature; focus on the specification, module products influence on the operation and maintenance of the.

In certain cases, LED is the biggest characteristic of controllable and non energy, through the use of intelligent control technology is reasonable, can effectively reduce the lighting operation time, and ultimately reduce lighting energy consumption, this is an important advantage of the application of LED lighting technology.

Seize the controllability of LED to fully reflect its energy saving advantage is an important direction for future development of LED road lighting, leaving the intelligent control, LED's energy saving advantage will be eclipsed.