led sales price of cigarettes lifted the t8 lamp real price answers
Now the LED price war has been selling cigarettes everywhere, the product quality is uneven, a 1.2M fluorescent tube from 10 yuan to 100 yuan, the appearance of similar but has nearly ten times the spread. What is the difference between the middle of it? Consumers how to judge the quality of the difference? Low prices can really do good quality? Is there a balance between price and quality?Now the LED price war has been selling cigarettes everywhere, the product quality is uneven, a 1.2M fluorescent tube from 10 yuan to 100 yuan, the appearance of similar but has nearly ten times the spread. What is the difference between the middle of it? Consumers how to judge the quality of the difference? Low prices can really do good quality? Is there a balance between price and quality?Today with the honor of a LED industry in 15 years of senior engineer Mr. Lee (hereinafter referred to as Li Gong) common random evaluation dismantling the Shenzhen good reputation of a LED factory T8 fluorescent tubes. This is a common market, the whole plastic lamp, the appearance of the market and the general plastic lamp the same, we first use the integral sphere to test the photoelectric color parameters:The luminous efficiency is 98.92LM / W; the color rendering index is 73.5; the color temperature is 6516K; the luminous efficiency is 98.92LM / W;
“In addition to the PF value is low, some other parameters are pretty good medium-light effect, to see with the material.” Li Gong, according to its data evaluation.The lamp for the snap-in, this easy assembly and maintenance, without the help of any tools can be easily opened. The lamp has an aluminum (commonly known as: plastic package aluminum), which can be a good solution to the problem of LED heat, can effectively delay the light failure, to extend the lamp life effect. Circuit board with the aluminum plate on the overall structure of a good heat.Li Gong took a careful look at the circuit board said, “This should be the national standard 1016 substrate, the material is good and the first line and a string of lights failure will not affect the other lamp beads.This T8 tube with 96 28350.2W lamp beads, as the next step to detect the quality of lamp beads, Lee workers holding a magnet on the lamp beads, and further test light bead material, but the lamp beads did not reflect. Lamp beads took down with a pair of scissors scratched the bottom of the electroplating layer holding the tweezers to light beads inside the colloid pick out on the electron microscope observed for a while, said: “Obviously copper brackets, gold wire, chip size visual not Will be less than 10 * 20, lamp beads really good.Another lamp core: powerAccording to the comparison of a variety of brand power, and Li Gong, according to test data to determine the basic protection of this power supply are: over-temperature, over voltage, open circuit, short circuit. And confirmed the decision lamp life is the use of domestic Kaiser GATHER 105 degrees 5000 hours, 4000V power supply voltage.Overall, this lamp is more moderate use of materials, we do the following test, the depth of assessment of its real life:According to the relationship between the working temperature and the life of the capacitor test (if the capacitor operating temperature of 105 degrees on the basis of declining ten degrees to double life) is its operating temperature is 95 degrees is 10,000 hours, 85 degrees 15,000 hours, 75 degrees to twenty thousand hours, 65 degrees is twenty-five thousand hours. Its operating temperature is less than 65 degrees at an ambient temperature of twenty degrees and its temperature is 68 degrees when the ambient temperature is raised to 41 degrees. In other words, according to 365 days a year 16 hours a day count, the theoretical life is four and a half.Li Gong, according to its material and test results on this product summary:Disadvantages: general shape, PF value is low, single voltage (170-265V) can not pass EMC and safety regulations;Advantages: circuit board and power supply and lamp beads, the three core dosage is, product quality and stability, high luminous efficiency, light uniform, no flash on the eyes without injury (2.5) normal use of two years of light failure should be less than 15%.Ligong estimated according to market conditions about the cost: shell 6 yuan, PCB2.2 million, lamp beads 98 * 0.08 = 7.84 yuan, 2.5 yuan power, labor costs 3 yuan, 1.8 yuan packaging, loss and management costs rent water , The total cost should be around 25 yuan, plus 20% of the profits and the current LED market, the general use of price war environment, this lamp market price should be around 28 yuan.