About Brightness Of LED Street Light Fixture

The brightness of street lamp 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 fixture 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 lamps and poor lighting effect.So what factors are related to the brightness of LED street lamps? How to ensure the stability of LED street light fixture brightness?

What are the factors that affect the brightness of LED street lamps?

1. Power size of LED lamps

The greater the power of LED lamps, the more internal LED beads.In the case of the same brightness of a single lamp bead, it must be LED lamps with more internal lamp beads have greater brightness.On the contrary, LED street lamp brightness is low.

2. Luminous efficacy of LED lamp beads inside LED lamp fixture

Luminous efficacy of LED lamp beads is an important factor to reflect the brightness of the whole LED lamp fixture.In the case of the same power of LED lamps, the higher the luminous efficacy of LED lamp beads, the greater the brightness of LED street lamps.

3. Heat dissipation of LED street light fixture

The heat dissipation of LED street lamps is also an important factor affecting their brightness.LED street lamps 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 lamps 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 lamps.

4. Series and parallel form of internal LED lamp beads

If the parallel number of LED lamp beads is greater than the series number, the input current required is relatively small, and the brightness of LED street lamps will be higher.On the contrary, LED street lamps will be less bright.

5. The quality of LED lamp beads and power supply

The LED lamp 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 fixture is better.

How to ensure the stability of LED street light fixture brightness?

1. The chip of LED lamp beads

LED lamp 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 lamp brightness.Therefore,try to use LED lamp 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 lamp 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 lamp 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 lamp is higher.

Choosing well the above three components, generally can ensure the stability of LED street light fixture brightness.

To sum up,if the buyer want to purchase LED street light fixture with stable brightness, do not just go for low prices.Understanding that products with good quality will not be cheap,as the saying goes, "you get what you pay for".LED street lamp is composed of LED chip, lens, power supply and drive etc components.The quality of the components such as chip, lens, power supply and driver etc used by different manufacturers is also different.Of course, the overall brightness of LED street light fixture with high-quality components will be better and more stable, and the products quality can be also guaranteed.Buying from regular and professional LED street light manufacturers, not small workshops.