The most important component of an LED lighting fixture is the chip and heat dissipation. A good LED chip can bring better luminous efficiency. The heat dissipation directly affects the stability of the luminaire and the service life of the product. So how to make LED lighting fixtures have better heat dissipation has always been the focus of technical research.
Let’s talk about the impact of heat dissipation on the luminaire. The main points are as follows:
1, most direct impact, poor heat dissipation directly lead to the reduced service life of LED lamps
Since LED lamps convert electrical energy into visible light, there is a problem of conversion rate, which cannot convert 100% of electric energy into light energy. According to the law of conservation of energy, excess electric energy is converted into heat energy. If the design of the heat dissipation structure of the LED lamp is unreasonable, this part of the heat energy cannot be quickly eliminated. Therefore, since the LED package is relatively small in volume, a large amount of heat energy will be accumulated in the LED lamp, resulting in a decrease in life.
2, causing the material quality to decline
Usually, electronic equipment is used for a long time, and some materials are easily oxidized. As the temperature of the LED lamps rises, these materials are repeatedly oxidized at a high temperature, the quality is lowered, and the life is shortened. At the same time, due to the switch, the luminaire causes multiple thermal expansion and contraction, which causes the strength of the material to be destroyed.
3, overheating causes electronic device failure
This is a common problem of semiconductor heat sources. When the temperature of the LED rises, the electrical impedance increases, causing the current to increase, and the current increases to cause the heat to rise. This reciprocating cycle, more and more heat, eventually causes the electronic components to overheat and damage, causing electrons malfunction.
4, the lamp material is deformed due to overheating
LED luminaires are made up of multiple parts, different parts of which use different materials. These materials have different thermal expansion and contraction sizes. When the temperature rises, some materials will expand and bend due to overheating. If the spacing between adjacent components is too small, both will be crushed and severely damaged.
The poor heat dissipation of LED lamps will cause so many problems. The problems of these components will lead to the performance degradation of the entire LED lamps and shorten the service life. Therefore, LED heat dissipation technology is an important technical problem. In the future, while improving the LED power conversion rate, the LED heat dissipation structure design should be more effective, so that the LED lighting fixtures can get rid of the heat dissipation troubles.
