LED street lamp lighting color mild droop have why to distinguish?

In the LED street light field of LED lighting lamps and lanterns, represented by both engineering and production factory, all the lights of the color mild droop status as the two important indicators of lighting effect. Application places for the LED street lamp color temperature have very high demand, at the same time, the light failure is of the key indicators affecting the service life of LED lights, so here to illustrate the two. After all, if not understand gentle light failure, the two concepts of color, is easy to appear in process of LED lamps and lanterns, light color brightness changes, problems such as difficult to find root cause of problems. LED street light color temperature of LED street light color temperature in K said, is to a standard blackbody ( For example, platinum, When heated, the temperature rises to a certain extent color started by red, orange, yellow, green, blue, indigo ( Blue and purple) , violet, gradual change, the use of this kind of light color changing features, its light source the light of the light color and black color at the same time, we call blackbody temperature at the time of the light source color temperature. Different color temperature corresponding to the different colors of light. LED street light color temperature around 3000 k, smooth color slants yellow. Color temperature above 5000 k, the light blue color. The light of the different color temperature, have different lighting and visual effects. Photosynthetic efficiency performance of the following is the different color temperature, color temperature light effect: 3000 k yellow light, strong penetrating power; 4200 k white with yellow; 5000 k6000k all white light; 6500 k in the sun during the day; 70008000 k white with blue obvious; More than 8000 k blu-ray, penetration is poor. For some color temperature control well of the LED street light, in the long run, the light may with the temperature increases, the color of the light appear unstable changes: with red with yellow ribbon of pure blue, namely high colour temperature. LED street lamp light failure and the light failure is another kind of problems in the lamps and lanterns runtime, although similar to the change of the color temperature, light failure, the color of the light will change obviously, but is not a change of tone, but the gap between light and shade. In principle, the light failure is to show the whole lamp is in itself the quality and conditions of use ( If the cooling performance is poor) Under the influence of the process of LED street lamp luminous flux decline. LED street light products caused this problem basically has the following reasons: 1, the LED chip in the selection of the quality standard is not good enough, poor quality, brightness attenuation will be faster. 2, in the production process of LED lamps and lanterns will have obvious difference, does not pay attention to the cooling structure processing, can make the LED chip heat dissipation can't rapid export, cause LED chip temperature is too high to droop. 3, in the process of actual use: for LED constant current drive, if LED driven by drive current is greater than the rated conditions, overload work seriously affect the life of power supply for a long time, thus affect the power constant current drive, it will directly affect the lighting effect and service life.

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