Market thoroughly: LED lamp sampling five major problems exposed

People's daily life, the lamp has become almost in addition to daily necessities daily necessaries of tea, most people cannot do without the necessities of life, and the poor quality of the LED lamps, not only low service life, long-term use is likely to cause adverse effect on visual acuity.

5 times the difference in consumer prices dizziness

This 3 watts of $8, buy more words can give you cheaper. You can rest assured that I can use this bulb. Others dare not, but I bet you one year, worn out to take over I give you a new. Yesterday, a shopping mall near the free road, a businessman saw a customer to ask their own LED bulb prices, very warm greeting. But the public is confused up Mr. xu.

Xu said that he has gone for more than a dozen stores, found on the market in the sale of LED bulbs, not only the brand and the price gap is particularly large. "An ordinary 3 Watt LED bulb, I walked down a dozen brands have been found. Although each merchant said his own brand goods, but some brands priced up to 35 yuan / only, and relatively unknown some, only $7, you can start. "

In the face of the 5 times the price, Mr. Xu made a difficult, which in the end is which to buy good?

Businesses pay real bottom wattage they did not know enough

Visit noted that, although most businesses are selling LED bulbs from different brands, but almost all of the south in the region, and the majority of Zhongshan.

Why is a small LED bulb difference is so great? A businessmen say the mystery: the lamp the price difference has been great, a well-known brands of lighting, businesses will provide "within one year quality problem can be replaced at any time" service, but some brands are not the most common service. He picked up his own shop in two different brands of LED watt light bulb, said, "you look at these two, I sell a piece of 25, one to the line on the line, this cheap, I can not protect you for 1 years. "At the same time, he said, don't look at all the LED bulbs are clearly marked wattage, but there are still not enough wattage," some of the same wattage bulbs and other than with a bright, reason is the insufficient number of tiles, this lamp is used not to live. And the number of bulbs to buy home enough, let alone consumers, that is, we do not know. "

There are five main problems in sampling samples

What is the quality of LED products sold in the market?

The day before, Jilin province Industrial and Commercial Bureau commissioned Jilin Industrial and Commercial Bureau were random inspection of LED lamps, nominal Guangdong and Shenzhen, Zhongshan, Foshan 28 production and sales enterprises. The spot checks of the quality of goods were tested for signs, lamp power, initial light efficiency, power factor, color characteristics, insulation resistance, dielectric strength and other indicators. There are 43 groups of samples in the 59 groups of samples were not qualified, the failure rate was 72.88% (commercial and industrial sector commodity quality spot checks have a certain relevance, the test results do not represent the overall quality of the market circulation of goods).

For sampling inspection results unqualified LED lamps and lanterns, the business sector has been ordered by the relevant business operators under the cabinet, and in accordance with relevant laws and regulations to investigate.

Question 1: mark is not qualified. Reporters learned from the Jilin provincial Trade and Industry Bureau, the detection of LED lamps, the biggest problem is the logo (logo, marking) failed. Among them, 63.3% of the samples contained "identification" unqualified item. According to the relevant person in charge of Jilin province industry and Commerce Bureau, LED lamps are not labeled products rated current. Rated current of electrical equipment refers to the rated ambient conditions (temperature, sunlight, altitude, installation conditions etc.), allows the current long-term continuous work of electrical equipment, electrical equipment when working current should not exceed its rated current, otherwise there may be fever, burning and other dangerous situations. The LED module has no source label, no manufacturer type symbol.

Question two: lamp power failure. According to reports, the lamp power is the effective power consumption refers to the normal work, reflects the energy consumption index of the product, some enterprises in order to increase the price of the small power lamp identification power increases, and the actual rated power is larger.

Question three: color characteristics are not qualified. Color feature is an important indicator of energy saving lighting parameters. Among them, 34.7% of the products contain a color feature. Unqualified reason is the use of poor quality of the fluorescent powder in the production process, leading to the use of the lamp is obviously insufficient, is not conducive to the protection of vision.

Question four: dielectric strength is not qualified. Some of the products in the flashover in the dielectric strength test (ARC) or breakdown phenomenon, may use the poor quality of the insulating material or electrical clearance and creepage distance caused by insufficient breakdown, causing a security threat to the user's life and property.

Question five: electrical strength is not qualified. From the view of the classification of electrical, LED fluorescent lamp belongs to the class II anti shock type, which requires LED fluorescent lamp input to touch, and input to the mounting surface between the need to meet the level of reinforced insulation insulation resistance and dielectric strength requirements. At present, a lot of LED fluorescent lamp in the insulation resistance test can be passed, but the strength of the test, however, is mainly the built-in power transformer selection and the LED module aluminum substrate installation location caused by. Many companies for the purpose of cost savings or high power efficiency, choose the use of non isolated transformer, which will lead to the built-in power supply input and output can not meet