LED lamps to buy how to avoid the trap

LED lamps have a series of features such as obvious power saving effect, long service life, no radiation, no stroboscopic effect, no noise, soft light, and wide operating voltage range, and are increasingly welcomed by consumers. As a consumer, how do you choose the products that you are satisfied with in an array of LED lighting fixtures? How do you judge whether the lamps are qualified or not? The people in the industry will support you in the following aspects.

The first is packaging and trademarks. The national compulsory requirements LED lighting manufacturers marked the following on the product packaging: rated voltage, voltage range, rated power, rated frequency. Generally speaking, the trademark of high-quality products is of good quality and the mark is clearly legible. It is not easy to wipe off with a soft and damp cloth, and there are manufacturers' trademarks and related certification marks.

The second is the appearance of the lamp. The appearance should be free of cracks, looseness, and traces of the interface being tamped. In the process of installation and dismantling, the lamp head should not be loose or boring. The plastic shell of the lamp must be selected from the flame-retardant type of engineering plastics. The feature is that the surface has a texture similar to frosted glass. The ordinary plastic surface is smooth and shiny, but it is easily deformed and flammable. It is prohibited for energy-saving lamps.

The third is working status. LED lamps under normal operating conditions, the temperature rise should be relatively low, if the cooling conditions are not good, the lamp beads work at high temperatures, light failure will be great, the lamp life will be greatly reduced. At the same time, if the lamp flashes quickly when it is on and off, it also indicates quality problems.

The fourth is the work sound. Electromagnetic compatibility is an item that must be passed by the electric appliance. The packaging of the LED luminaire product must be printed with the symbol of the national electromagnetic compatibility test. We can also easily judge through a small experiment with a medium- and short-wave radio. When the lights are working, put the radio in the vicinity. The lower the radio receives the noise, the better the electromagnetic compatibility of the lamp under test. Listening to the sound of the LED lamp working in a quiet environment, if you can hear the sound of the lamp working very clearly, the power of the lamp is not very good.

As a general consumer who does not have electrical knowledge, how to quickly, simply and effectively purchase LED products that meet their needs can be roughly focused on the following two indicators.

The first is power and integrated light efficiency. The integrated luminous efficacy of an LED lamp refers to the luminous efficiency of a product LED lamp, in units of lumens/watt. The higher the value, the better the energy-saving effect of the lamp, and the more power it saves, the LED lamps with lumens/watt height should be selected. According to the use of the environment to buy the right size of the power of LED lamps, LED lights currently on the market, 16-watt power LED lamps can reach the equivalent of 200-watt incandescent light flux, enough to meet the lighting requirements of 10 square meters of space .

The second is the color rendering index and color temperature. The color rendering index is an index for evaluating the color rendering ability of a light source. The perfect color rendering index of the reference light source is 100. The higher the color rendering index, the closer the color response of the light source to the object is to the true color. It is generally believed that: 80 to 100, excellent color rendering; 50 to 79, general color rendering; less than 50 is considered poor color rendering. The unit of color temperature is Kelvin (K), the color temperature of red light source is between 800K and 900K, the color temperature of yellow-white light source is around 3,000K, the color temperature of white light source is about 5500K, and the color temperature of light blue light source is between 8,000K and 12,000K.