What is wrong with the purchase of downlight shell
With the increasingly strong sound of energy conservation and environmental protection, we are using more and more LED lights in lighting design. LED market is now a mixture of good and bad, manufacturers and businesses are pushing and blowing their own products. So what do you know about LED line lights?
The selection of LED lamps includes appearance, heat dissipation, light distribution, glare, equipment, etc. We don't talk about the parameters of lamps today, just about the light source: do you really choose a good LED light source? The parameters of light source mainly include: current, power, luminous flux, luminous decay, light color and color rendering.
Wrong choice of LED line lamp
The first mistake is that the expectation of using longevity in practice is too high.
However, just like all the base light sources, the luminous flux lumen of LED also decays with time. Therefore, although LED lighting time can be very long, led lumen attenuation is affected by many environmental conditions such as ambient temperature, humidity and ventilation. Lumen decay is also influenced by many other electrical design considerations such as manipulation, thermal treatment, current water steepness.
The second mistake is to regard the practical luminous viewpoint as a useful viewpoint.
The luminous viewpoint of LED includes useful viewpoint and practical viewpoint. The angle between the direction where the luminous intensity value is half of the axial intensity value and the luminous axis is the useful viewpoint. Two times of the half value angle is the practical luminous viewpoint. The viewpoint beyond half of the axial intensity is not included in the useful viewpoint in practice because the light is too weak.
Therefore, customers should pay attention to the practical luminous viewpoint when purchasing products. When calculating the quantity of products used in the project, the practical luminous viewpoint shall prevail. The useful luminous viewpoint can only be used as a reference value.
Third, the higher the power, the higher the brightness.
The brightness of LED is measured by the luminous intensity, which refers to the luminous intensity in the direction of the normal line (the axis of the cylindrical luminous tube), that is, the luminous flux per unit solid angle, in candlelight. Because the light intensity of general LED is small, so the light intensity is commonly used as the unit of millicandela. Generally speaking, the light source will radiate its luminous flux in different directions with different intensities. The intensity of visible light emitted by the unit solid angle in a specific direction is called light intensity, which is called axial brightness for short.
Article source: downlight shell manufacturerhttp://mushuren.cn/
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05-04
What is wrong with the purchase of downlight shell
With the increasingly strong sound of energy conservation and environmental protection, we are using more and more LED lights in lighting design. LED market is now a mixture of good and bad, manufacturers and businesses are pushing and blowing their own products. So what do you know about LED line lights?The selection of LED lamps includes appearance, heat dissipation, light distribution, glare, e
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05-04
Common chips of downlight shell
We are not unfamiliar with downlight shell, which is one of the commonly used LED lamps in daily life. However, we often neglect the small chip when we choose and buy it, which leads to losses. Although the chip is small, it plays an important role in the downlight housing, because it touches the light efficiency and life of the downlight housing, so you must pay attention to it when you buy it. W
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05-04
Precautions for the purchase of downlight shell accessories
Good quality is not what is blown out. If you want to choose high-quality lighting accessories, you need to pay attention to several key points:1. Look at the packaging and trademark. The state forces the manufacturer of downlight shell to mark the following contents on the outer package: rated voltage, voltage scale, rated power and rated frequency. Generally speaking, the trademark printing qual
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05-04
What is the heat dissipation method of downlight shell
As for downlight shell manufacturers, because the use of LED street lights is very long, so, when purchasing LED street lights, many people will pay attention to the heat dissipation problem of downlight shell. Generally speaking, this problem is solved, and the quality of LED street lights will not be very poor.1. The three prevention plan is selected outside the lamp to deal with the heavy dust