Analysis of four key technologies in LED fluorescent lamp design

Fluorescent tubes are widely used in daily life, such as supermarkets, schools, office cities, subways, etc. you can see a large number of fluorescent lamps in any visible public places! The power-saving and energy-saving performance of LED fluorescent lamps has been highly recognized by everyone after a long time of extensive publicity. However, many LED fluorescent tubes bought at a high price are now in the same situation as low-cost energy-saving lamps: saving energy but not money! And it is a huge waste of money. How to make the service life and brightness of LED reach the standard of satisfying users is a meaningful topic! In order to maintain long service life and high brightness, LED fluorescent tubes need to solve four key technologies: power supply, LED light source, heat dissipation and safety.

1. power supply

The primary requirement of power supply is high efficiency. For products with high efficiency, low heating will inevitably lead to high stability. Generally, there are two schemes in the power supply: isolation and non isolation. The isolation volume is too large and the efficiency is low. In use, there will be many problems in installation, which is not as promising as the non isolation products.

2. LED light source

The LED lamp beads with the patented structure of Taiwan lemmings are used. The chip is placed on the pin, and the heat energy passes through the silver pin to directly bring out the tropical zone generated by the chip node. It is qualitatively different from the traditional in-line products and traditional chip products in terms of heat dissipation. The node temperature of the chip will not accumulate, thus ensuring the good usability of the light source lamp beads, ensuring the long life of the light source lamp beads and low light failure.

Although traditional patch products can connect the positive and negative electrodes through the gold wire of the chip, they also connect the heat energy generated by the chip to the silver pin through the gold wire. The heat and electricity are conducted by money. The long time of heat accumulation will directly affect the life of LED fluorescent tubes.

3. heat dissipation

Introducing and applying infrared radiation heat dissipation to fluorescent tubes is an important means to improve the service life of fluorescent tubes. In the consideration of heat dissipation, we separate the heat dissipation of LED light source lamp beads from that of power supply, so as to ensure the rationality of heat dissipation.

There are three ways of heat conduction: convection, conduction and radiation. In a closed environment, convection and conduction are less likely to be realized, and heat is emitted through radiation, which is the focus of fluorescent tubes. The following is the test data of LED fluorescent tubes we made. The temperature measured outside the LED silver pin solder joint is only 58 degrees.

4. safety

 Safety, the PC flame-retardant plastic pipe is mainly mentioned here. Because the infrared heat dissipation can penetrate the PC pipe, we can consider the safety of the LED lamp more when we design it. With the all plastic physical insulation method, we can absolutely ensure the safety of use even when using the non isolated power supply.

LED fluorescent lamps have been developed for quite a long time. From the perspective of energy-saving effect, their future applications are quite broad. In addition to energy saving, we should pay more attention to their safe and long-life use!


Post time: Jun-23-2022