What is the effect on street lights if the temperature is too high

What are the effects of high street lamp temperature? Whenever the LED street lamp is used for a period of time, the temperature inside the lamp will continue to rise during use. If the heat generated cannot be dissipated in time, it will have a great impact on the service life of the street lamp. Severely it will damage the led street lamp and the lamp holder. LED light sources are the same as traditional light sources. Semiconductor light-emitting diodes (LEDs) also generate heat during operation, which depends on the overall luminous efficiency. Under the action of external electric energy, the radiation of electrons and holes recombine to produce electroluminescence. The light radiated near the PN junction also needs to pass through the semiconductor medium and packaging medium of the chip itself to reach the outside (air). Combining current injection efficiency, radioluminescence quantum efficiency, and chip external light extraction efficiency, in the end, only 30-40% of the input electric energy is converted into light energy, and the remaining 60-70% of the energy is mainly caused by non-radiative recombination of lattice vibration The form transforms heat energy. We believe that the stability and quality of LED lamps are critical to the heat dissipation of the lamp body. The heat dissipation of high-brightness LED lamps on the market often uses natural insert radiators to dissipate heat, and the effect is not ideal. The main structure of LED lamps using LED light source is composed of LED, heat dissipation structure, driver, lens and other parts. Therefore, heat dissipation is also an important part. If the LED does not dissipate heat well, its life will be affected. Thermal management is a major issue in high-brightness LED applications. Since the p-type doping of group III nitrides is limited by the solubility of the Mg acceptor and the higher starting energy of holes, heat is particularly easy to generate in the p-type region, and this heat must be dissipated on the heat sink through the entire structure; The heat dissipation pathways of LED devices are mainly heat conduction and thermal convection; the extremely low thermal conductivity of the substrate material increases the thermal resistance of the device, resulting in a serious self-heating effect, which has a devastating effect on the performance and reliability of the device. The effect of heat on high-brightness LEDs. Heat is concentrated in a chip with a small size, and the chip temperature rises, causing uneven distribution of thermal stress, chip luminous efficiency and phosphor lasing efficiency decline; when the temperature exceeds a certain value, the device failure rate increases exponentially. According to a research data, the reliability of the components decreases by 10% for every 2℃ increase in component temperature. When multiple LED strings are arranged in parallel to form an LED lighting system, the problem of heat elimination is always a concern in the industry. Solving the problem of heat management has become the primary factor in high-brightness LED applications.