In recent years, LED street lights have been widely used in urban road lighting construction due to their significant advantages such as long life, energy saving and high efficiency. However, when the street lamp has been working for a long time, if the heat dissipation effect is not good, there will be problems such as shortening the service life of the street lamp, failure of electronic devices, and deterioration of the quality of lighting materials. The following Zhejiang PO-Light Electrical Appliance Co., Ltd
. will take you to understand the influence of heat dissipation of LED street lamps on lamps and lanterns.
1. Poor heat dissipation leads to a reduction in the service life of LED street lamps
On the one hand, the life of LED street lamps is determined by light decay. The greater the light decay, the lower the brightness of the street lamps. The light decay of LED street lights is related to the temperature of the semiconductor PN junction. The higher the temperature of the PN junction, the earlier the light decay will appear, and the life of the street light will be shortened. Therefore, in order to improve the life of LED street lamps, it is necessary to reduce the junction temperature, and to reduce the junction temperature, a good heat sink is required.
At present, most LED street lamps on the market use aluminum substrates as heat sinks, and the PCB is attached to the metal heat dissipation substrates to form an integral lighting device structure. The emergence of the heat island effect.
Different from most LED street lights on the market, Sansi LED ceramic street lights use ceramic heat dissipation technology. The ceramic substrate is used as the heat sink, and the LED chip is directly attached to the ceramic. The heat is directly dissipated through air convection, and the heat dissipation performance is much higher than traditional PCB LED lamps make Sansi LED ceramic street lamps have better insulation, corrosion resistance, and more reliable and stable performance. At the same time, Sansi created its own ceramic pixels to separate the heat sink of the LED lighting device into multiple independent pixels, each LED chip corresponds to a separate heat sink, so that the heat of each LED chip does not affect each other and avoids the "heat island effect". Appears to improve the heat dissipation efficiency of lamps and lanterns.
On the other hand, the visible light of LED lamps is converted from electrical energy, but not all electrical energy is 100% converted into light energy. According to the principle of energy conservation, part of the electrical energy will be converted into heat energy. If the heat dissipation structure of the LED street light is unreasonable, a large amount of heat will accumulate, which will affect the service life of the LED street light over time. Aiming at the problem of poor heat dissipation of traditional LED street lamps, Sansi LED ceramic street lamps adopt hollow structure design, which has good heat dissipation effect and more stable and reliable performance. Sansi can be seen in road construction at home and abroad.
2. Cause electronic device failure
When the temperature of the LED chip increases, the resistance of the metal conductor will increase, and when the resistance increases, the current will increase, and the increase in the current will cause the temperature to rise and heat to accumulate. When the temperature inside the LED street light is too high, the electronic components will be damaged to varying degrees due to the high temperature, which will cause the failure of the electronic devices and cause the LED street light to not work properly.
3. Lamp material deformation and material quality decline
Usually LED street lights work for a long time, and some materials will be easily oxidized. At this time, if the heat dissipation of the LED street lamp is not smooth, the temperature in the lamp body will rise, and some materials of the lamp will undergo repeated high-temperature oxidation, which will reduce the quality of the lamp material, seriously lead to the deformation of the lamp material, and increase the later maintenance cost of the street lamp and municipal expenses.
To sum up, the quality of heat dissipation will directly affect the performance and service life of LED street lights. Aiming at the problem of poor heat dissipation of traditional LED street lamps, the LED ceramic street lamps developed by Sansi can solve the problem of LED heat dissipation well.