10,000 hours, 20,000 hours, 25,000 hours, 30,000 hours, 50,000 hours, 15 years, 20 years..., various life labels are varied, and the life expectancy is longer.
Recently, the fifth round of LED bulb test results from the China CLEAR inspection program was released. The reporter found that there is no standard for the life expectancy of LED lamps that are most concerned and sensitive to mass consumers.
The test report shows that there are 40 models of LED bulbs detected in this round, from 32 different famous brand manufacturers (including some e-commerce brand products). Among them, 9 of the 40 sampling models did not indicate the length of life on the outer box, while the life of the marked lamps was the largest among 30,000-50,000 hours, but there were also 3W LEDs of brands such as Yiguang, Long and Bright. The lamp life parameter standard is in the smaller range of 20,000 to 25,000 hours.
In addition to the more common 50,000 hours of lamp life, the reporter was stunned by the fact that there are more than one brand of lamp life parameters marked more than 10 years. Even the life of the lamps in 15 and 20 years has appeared in the most conspicuous position.
Such a long service life certainly attracts attention, but on the basis of the prior art and the process technology, whether it can really achieve the long service life of the lamp, which not only puts a question mark in the industry, but also makes the consumer psychologically doubt the quality of the lamp. .
"Under normal circumstances, the average 3W bulb life is about 25,000 hours, big brands will strictly label this parameter." Shang Yi lighting area manager Qiu Lei told reporters that LED lamp life standard is based on 30% of light decay When the lamp is damaged, that is to say, when the light decay reaches 70% of the initial state, the lamp will be broken.
“But it also creates the chance to hit the ball for most small brands. Some manufacturers have 30,000 or more 50,000 hours of water, which is too much exaggeration.â€
In addition, some parameters are marked in "years", and Qiu Lei also said that the life of lamps is calculated differently. Manufacturers that are measured in years may consider that it is impossible for consumers to reach 24 hours of normal use per day. “The standard for calculating the life of a luminaire is even greater, and the time it can be marked is longer, because the calculation is different, 10 and 15 years are possible.â€
Different labeling methods also reflect the sales strategies of different manufacturers. "But for the consumer, he can't see the flaws in it, and he will think that the lamp with longer life will be better. For the dealer, he also has Sufficient basis to persuade consumers to recognize the product's life standard is not a virtual standard, false standard, in fact, this is a marketing tool." Qiu Lei said.
At the end of the 1940s, the first semiconductor triode was born in the world. With its characteristics of small size, light weight, power saving, and long life, it was quickly used by various countries and replaced electronic tubes in a large range. In the late 1950s, the first integrated circuit appeared in the world. It integrated many electronic components such as transistors on a silicon chip, making electronic products smaller. Integrated circuits have rapidly developed from small-scale integrated circuits to large-scale integrated circuits and ultra-large-scale integrated circuits, thereby enabling electronic products to develop in the direction of high efficiency, low consumption, high accuracy, high stability, and intelligence.
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