Tube lights are widely used in our daily life, which is can be say one of the most commonly used lamps in the world, in supermarkets, in schools, in offices, in subways. In recent years, LED tube lights started to be used in these places due to their advantages in energy-saving and environmental protection. How to improve the lifetime and brightness of these lamps to make them meet the requirements of general lighting is a significant subject. In order to maintain a longer service life and higher brightness, problems waiting to be solved are: power suppliers, LED lighting sources, cooling sections and safety.
The first and foremost requirement of power supplier is high efficiency. LED tube lights with high efficiency will generate less heat and have higher stability. Normally used power suppliers can be divided into two groups: isolated drivers and non-isolated drivers. Generally, isolated power suppliers are superior to non-isolated power suppliers in many aspects. They are smaller, having higher efficiency and easier in packaging and installation. Overall, isolated drivers have wider prospects in the market.
When making LED lighting sources, designers usually placed chips on pins. These silver pins can conduct heat generated by PN junctions during their works. Different from the traditional DIP products and patch products in the heat dissipation aspect, chips packaged in this way will not collect heat within them, having longer service life and less light attenuation. Traditional patch-packaged LEDs connected with positive and negative electrodes through gold wires, which will be weaker than silver pins in heat conduction.
Introducing infrared heat radiation into LED tube lights is a crucial approach to improve their service lives. Normally, designers would like to separate LED lighting sources and power suppliers in case that the cooling sections of these two parts have interference and guarantee an effective heat dissipation. There are three ways of heat dissipation: convection, conduction and radiation. In a closed environment, the heat dissipated by convection and conduction is very limited, while radiation is the mostly commonly used cooling method among LED tubes.
PC flame-proof plastic tubes used in LED tube lights can easily be penetrated by infrared heat. When we design LED lamps, we need to take safety into account. Using all-plastic insulation, even in the use of non-isolated power suppliers, safety still can be guaranteed.