1. What do you think about the 1-year warranty for energy-saving lamps?

If the manufacturer of an energy-saving lamp promises a 1-year warranty, then its design life should be more than 2 years. We often say that the 1-year warranty means that I can guarantee that you will use it for at least 1 year. In fact, if a product has a problem, it will have a problem when it is turned on at the beginning, or it will be about three months after it is turned on. If there is no problem, it can generally be used until the life of the product.

2. Why do you say that the plastic of energy-saving lamps will turn yellow after being ignited for a period of time?

Plastic yellowing is a basic characteristic of plastics. There are many reasons for plastics to turn yellow, but one of the most important reasons is the influence of ultraviolet rays. PBT materials are no exception. Because ultraviolet rays are generated in the lamp tube during the lighting process, Ultraviolet radiation makes the plastic turn yellow. Of course, we can add some anti-ultraviolet materials to the plastic, but this only prolongs the time it turns yellow, and it will still turn yellow after a long time. However, the yellowing of plastics does not affect some basic properties of plastics such as high temperature resistance and flame retardancy.

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3. How to judge whether the components of an energy-saving lamp are firmly combined?

Since we don't have special instruments like the laboratory in real life, we can only judge and identify from the naked eye and some simple actions. When we judge the firmness of the combination of the lamp cap and the plastic part, we first check whether there is any gap in the combination of the lamp cap and the plastic part, whether the size of the gap is reasonable, and the depth of the beer hole of the lamp cap. Hold the plastic part tightly and twist it by hand. If it can be unscrewed, it means that the combination of the lamp head is not strong.

When we judge the firmness between the lamp tube and the plastic parts, and the upper and lower plastic parts, we can also observe first, then hold their upper and lower sides, and gently shake and pull them out. Too small to see if they are loose.

4. How to judge the color rendering index of energy-saving lamps?

We can turn on the lamp and shine it on the palm of the hand. The palm of the hand will look red and bloody, indicating that the product has a high color rendering index. Similarly, if the color rendering index is low, the palm of the hand will appear blue and bloodless.

We can also place a colored object under different lights, compare your perception of color, and compare your perception of the color of the same object under solar energy, and then judge the color rendering index of a lamp. high and low.

5. Judging the luminous flux and luminous efficiency of energy-saving lamps?

To judge whether an energy-saving lamp is energy-saving and whether the energy-saving effect is obvious, we can only feel whether it is bright or not with the eyes without an instrument. It would be better if there is a comparison. You can light up an energy-saving lamp with the same power , to see how bright they are (of course, one of them you think is of better quality and higher price, and the other is of poor quality and lower price), good energy-saving lamp products have very high brightness, and you may even feel a little A dazzling feeling, poor energy-saving lamps are like a candle, or like a T12 fluorescent tube, or even worse.