At present, there are two forms of LED drive power supply, one is low voltage and large current, the other is high voltage and small current output power supply mode, in terms of cost and performance will be better, is the future mainstream products. If the temperature control is not good, it will affect the light effect, accelerate the light attenuation, and even affect the color temperature and the stability of color development. Therefore, in the cooling problem of LED outdoor lighting lamps, progress is still needed, even more than the effect of incandescent lamps for the purpose.

Natural light has a strong yellow spectrum component, giving people a feeling of warmth, while LED light emitted white light has more blue cost, in this light illumination, the visual effect is not very natural. Effectively reducing the connection temperature to the allowable level is still being explored and practiced. There is a big gap between the luminous efficiency of LED outdoor lighting lamps and high intensity gas discharge lamps. LED outdoor lighting project lighting manufacturers use LED as a light source, which must have higher conversion efficiency, so as to emit more light.

LED is an emerald green light source. LED lamp is driven by direct current, no flash frequency, no infrared (IR) and ultraviolet (UV) components, no electromagnetic radiation environmental pollution, high color rendering index and strong luminous specificity; Good variable light characteristics, led color temperature change is not easy to cause visual error; Cold light source has low calorific value and can be safely touched. It can not only give people comfortable irradiation indoor space, but also effectively meet everyone's physical health requirements, is to protect the eyes and energy saving environmental protection of physical and mental health light source.

LED is environmental protection and energy saving products, in the selection of driving power efficiency is higher than 90%, therefore, the structure of the installation of power in the LED outdoor lighting lamps and lanterns is very important. Because the luminous efficiency of LED decreases with the increase of LED temperature, heat dissipation is very important. The higher the efficiency of the power supply, the smaller the power consumption, the smaller the heat inside the lamp, the lower the temperature rise of the lamp, which is conducive to delaying the light decline of LED.