The brightness of street light refers to the physical quantity of intensity of luminescence (reflection) on the surface of the luminous body (reflective body), the unit is candela/square meter (CD/square meter).Illuminance is also light intensity, refers to the light flux of visible light received per unit area, used to indicate the intensity of light and the amount of the surface area of the object is illuminated.Brightness is related to the light-emitting area, while illuminance is generally related to the intensity and distance of lighting.For example, the same light source power, the greater the area, the lower the brightness;And the same light source power, the farther the distance, the lower the illuminance per unit area.
LED street light has become one of the important choices for outdoor street lighting due to its advantages of good luminous effect, high brightness and long service life.LED technology is developed in recent years.Many people worry that this technology is not mature, which will lead to the unstable brightness of LED street lights and poor lighting effect.So what factors are related to the brightness of LED street lights? How to ensure the stability of LED street light brightness?
What are the factors that affect the brightness of LED street lights?
1. Power size of LED lights
The greater the power of LED lights, the more internal LED beads.In the case of the same brightness of a single light bead, it must be LED lights with more internal light beads have greater brightness.On the contrary, LED street light brightness is low.
2. Luminous efficacy of LED light beads inside LED light
Luminous efficacy of LED light beads is an important factor to reflect the brightness of the whole LED light .In the case of the same power of LED lights, the higher the luminous efficacy of LED light beads, the greater the brightness of LED street lights.
3. Heat dissipation of LED street light
The heat dissipation of LED street lights is also an important factor affecting their brightness.LED street lights with good heat dissipation conditions will have more stable internal current and stable overall brightness.If the heat dissipation function is poor, the internal temperature of LED lights will be too high.When the internal temperature is too high, it will aggravate the light decay of LED chips, so that soon it will cause dim of LED lights.
4. Series and parallel form of internal LED light beads
If the parallel number of LED light beads is greater than the series number, the input current required is relatively small, and the brightness of LED street lights will be higher.On the contrary, LED street lights will be less bright.
5. The quality of LED light beads and power supply
The LED light beads and power supply produced by brand manufacturers are of higher quality, and the materials and process are much better than small workshops.Of course,the overall brightness effect of LED street light is better.
How to ensure the stability of LED street light brightness?
1. The chip of LED light beads
LED light bead chip is a component that directly reflects the brightness effect.If the quality of LED chip is poor, it will not only lead to poor brightness effect, but also affect the stability of LED street light brightness.Therefore,try to use LED light chip produced by brand manufacturers.Because brand manufacturers pay attention to public praise and service, and the production process is relatively mature, so there is a big gap of product quality between brand manufacturers and small workshops.
2. Drive power supply
The power size of LED street light should be properly matched with the power of LED light source.If their power collocation is not reasonable, the phenomenon of unstable lighting will naturally occur.And we also should ensure the quality of LED power supply, try to choose the power supply produced by brand manufacturers.
3. Radiator
Because the calorific value of LED chip is large, so the LED street light head must be used with a radiator.Radiator is an important factor affecting its brightness stability.This also has to choose the radiator produced by brand manufacturers, we have to admit that the heat dissipation efficiency of their radiator is higher, at the same time, it emit more heat, so the brightness stability of LED street light is higher.
Choosing well the above three components, generally can ensure the stability of LED street light brightness.
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Post time: Jun-26-2023