What is the price of led tubes, and how to choose Led tubes?

The state forces LED lamp manufacturers to mark the following contents on the product packaging: rated voltage, voltage range, rated power and rated frequency. Generally speaking, the trademark printing quality of high-quality products is good, the logo is clear and identifiable, and it is not easy to erase with soft wet cloth, with the manufacturer's trademark and related certification marks. When choosing a product brand, we should choose a manufacturer with a certain reputation and a registered capital of more than 50 million. The LED lamp beads produced by different manufacturers have different production standards, different manufacturing processes and different employee operations, and there will be obvious differences.

Second, the emergence of LED tubes.

Appearance should be free of cracks, looseness and pry marks between interfaces. During installation and disassembly, the lamp holder should not be loose or bent. The plastic shell of the lamp must be engineering plastic flame retardant, which is characterized by its surface with a texture similar to ground glass. Ordinary plastic has a smooth and shiny surface, but it is easy to deform and flammable, so it is forbidden to be used in the production of energy-saving lamps.

Third, the working state.

Under normal working conditions, the temperature rise of LED tubes should be relatively low. If the heat dissipation condition is not good, the lamp beads will work at high temperature, and the light attenuation will be great, and the life of the lamp will be greatly reduced. At the same time, if the light flashes quickly when it is switched on and off, it also indicates that there is a quality problem.

Fourth, the working voice.

Electromagnetic compatibility (EMC) is an item that electrical appliances must pass, and the national EMC test mark must be printed on the packaging of LED lamp products. We can also make a simple judgment through a small experiment. When the lamp is working, put the radio nearby. The lower the noise received by the radio, the better the electromagnetic compatibility of the tested lamp. Listen to the sound of LED lights when they work in a quiet environment. If you can clearly hear the sound of the lamp, it means that the power supply of the lamp is not very good.

Verb (abbreviation for verb) power and comprehensive light effect.

The comprehensive light efficiency of LED lamp tube refers to the luminous efficiency of a product LED lamp, and the unit is lumen/watt. The higher the value, the better the energy-saving effect of the lamp, and the more energy-saving, so the LED lamp with lumen/watt height should be selected. According to the use environment, choose the LED lamp with appropriate power. At present, the LED lamps on the market, with the power of 16W, can reach the luminous flux equivalent to that of 200W incandescent lamps, which is enough to meet the lighting requirements of 100 square meters.

Sixth, the color rendering index and color temperature.

The color rendering index of LED tube is an index to evaluate the color rendering ability of light source to objects. The color rendering index of the perfect 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 real color. Generally speaking, 80 ~ 100 has excellent color rendering; 50 ~ 79, the color is average; Less than 50 is considered as poor color rendering. The unit of color temperature is Kelvin (K), the color temperature of red light source is between 8000K and 900 K, the color temperature of yellow-white light source is around 3,000K, the color temperature of white light source is around 5,500 K, and the color temperature of light blue light source is between 8,000 K and12000 K. Choose the color temperature of light source according to your personal preference. For example, if someone likes warm-colored lights, they can choose lights with a color temperature of around 3,000K K K. ..