How to make high-efficiency led bulb led bulb lamp
The luminous efficiency of the entire bulb exceeds 60LM/W in order to save power than fluorescent energy-saving lamps. It is best to exceed 90LM/W, the higher the better (the light effect should be calculated by the luminous flux after the work is stable, not the initial brightness. Generally, the brightness after stabilization is more than 10% lower than the initial brightness).
To achieve high light efficiency:
First, you need to choose a high-efficiency LED light source.
Second, you need to choose a high-efficiency LED power supply.
Third, you need to choose a lampshade with high light transmittance.
1. High luminous efficiency LED light source, the luminous efficiency of the LED light source is at least more than 110LM/W. Please note that the luminous efficiency of some lamps is actually the luminous efficiency of the LED light source. If this is the case, the luminous efficiency of our LED bulb will exceed 130LM/W. Some packaging factories stated in their advertisements that the luminous efficiency exceeds 110LM/W, which is absolutely not false. We bought it and measured it and it was far lower than this value. Asked the reason, they informed the detection method. Their method is to add 350mA to the LED. The constant current, the luminous flux is 110LM/W. When we told the 350mA constant current, the voltage of all their samples exceeded 3.5V, and the other party had nothing to say. Let's calculate (3.5V x 0.35A=1.225W, 110/1.225=89.79LM/W) the actual luminous efficiency does not exceed 90LM/W.
2. High-efficiency power supply. At present, LED drive power supplies are mainly divided into three categories, resistance-capacitance step-down, electronically isolated power supply and non-isolated power supply.
The resistance-capacitance step-down power supply has three advantages: high efficiency, simple structure and low price. The disadvantage is that it cannot make products with higher power. It has stroboscopic light, low reliability and relatively short life. The most important thing is low safety. LED tube The feet are live.
Electronic non-isolated constant current power supply, high efficiency, structure and price are more advantageous than isolated power supply, light-emitting basically no flicker, good product reliability, but low safety, LED pins are charged, if the lampshade is broken, it may be Cause an electric shock.
Electronically isolated constant current power supply, the efficiency is slightly lower than that of non-isolated power supply, no stroboscopic light emission, isolated circuit, safe and reliable.
I personally recommend choosing an isolated constant current power supply. It must be safe and reliable. Moreover, the indicators of isolated circuit harmonics, lightning surges, and high-frequency interference lamps are far superior to the other two driving methods. In practical applications, it is not More isolation damage.
The efficiency of using an isolated constant current power supply for LED bulbs below 7W is best to be higher than 80%.
Third, the choice of lampshade, the high light transmittance of the lampshade is relative to the glare highlights. Too high light transmission will cause the LED bulbs to appear glare highlights. The best choice is at the critical point, that is, the highest light transmittance when the bright spots are not visible. sex. Now ordinary films use white-painted glass lampshades, which have high light transmittance and no bright spots. But this kind of PC lampshade can see the bright spots, and the LED aperture can be seen on the side. As an ordinary consumer, it is up to you to choose which lampshade LED bulbs. The glass lampshade is fragile, and the PC lampshade has a bright aperture, which is not fragile. Or in the future, there will be a PC lampshade with or without bright spots that emits truly uniform light, that will be the best choice. We have also been working hard.
Shenzhen Benwei Lighting Technology Co., Ltd is a professional manufacturer in producing LED lighting products, integrates design, development, production and sales of high-tech products as a whole . Our fcatory was founded in 2010, is located in shenzhen.
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