CommonLED bulbsSubstandard conditions of low quality
Although it is not the power wattage, but the light Efficiency, that is, the number of lumens per watt is an important indicator to measure the cost performance of lighting, but consumers generally believe that the greater the rated power, the greater the brightness of the LED bulb and the greater the lighting area. The lower the price, the more likely it will be accepted, as long as the light is on. In addition, due to the lack of corresponding detection tools, it is difficult to distinguish their pros and cons with the naked eye. In order to cater to the customer’s psychology, merchants blindly increase the lighting brightness by reducing the number of lamp beads and increasing the current of the lamp beads, that is, increasing the rated power of the lamps.
Behind the false standard of rated power, there are some corner-cutting practices such as reducing lamp beads, increasing current, ignoring heat dissipation, and simplifying power supply, resulting in insufficient lamp life, serious stroboscopic, poor safety, and low light efficiency, etc. problem occurs. The false power standard is related to the lack of social awareness, the merchants cut corners and the lack of scientific knowledge, which also reminds consumers to try to buy big brands with perfect after-sales guarantee when purchasing LED bulbs. It is necessary to shop around to understand the parameters that affect the cost-effectiveness of products, and choose products from well-known LED lighting companies to avoid unnecessary losses to your property and physical and mental health.
How to choose LED bulbs
Requirements for LED itself. First of all, the brightness should be comparable to incandescent lamps, because incandescent lamps need to be replaced. Because LEDs only talk about wattage and not lumens. Because the light efficiency of LED itself is constantly developing, the brightness ratio of LED and incandescent lamp is generally 18. That is to say, 1W LED bulb lamp is equivalent to the brightness of 8W incandescent lamp.
The shape of the LED bulb should also be similar to that of an incandescent lamp. This is no problem for the current LED technology, but the heat dissipation problem of the LED itself cannot adopt an all-glass shape structure, which is pear-shaped. It is necessary to use a better heat dissipation material to ensure the service life of the LED bulb.
When purchasing LED bulbs, choose the same size. The most common American E26 or E27 screw base (commonly known as screw port) power supply should be 220VA.
About the power supply of the bulb. Generally speaking, the basic types of power supply are mainly divided into two types: isolated and non-isolated. The non-isolation type does not require an isolation transformer, so the interest is relatively low, but the requirements for the withstand voltage of the aluminum substrate are relatively high, otherwise the radiator may be charged, and it is not very beautiful outside the lamp; the isolation type is safer and easier Through the safety regulations, but the interest is relatively high, but it is more suitable for home use.
The heat sink for the bulb. After finishing, the LED base plate can be fixed directly. Generally, the traces of finishing can be seen on the aluminum heat sink of the product. Otherwise, if there is an air gap, you need to apply thermal paste to improve thermal conductivity.
Purchasing bulbs should be made of plastic. Because the plastic is used, the heat needs to be dissipated from the radiator to prevent damage. Because the bubble shell is visible light, there is little infrared heat, so it will not be damaged by overheating.
