1, Definition and classification of the lifespan of LED street lights
The lifespan of LED street lights usually refers to the time during which they cannot maintain their original performance or continue to function normally due to aging, failure, or damage under normal usage conditions. The lifespan indicators of LED street lights mainly include three types: average lamp lifespan, design lifespan, and typical lifespan.
Average lifespan: refers to the time during which 50% of LED street lights can still function normally after a specific period of time in a standard environment. At present, the average lifespan of LED street lights is usually set at 50000 hours both domestically and internationally.
Design lifespan: The estimated time for LED street lights to function properly under specific environmental conditions, as estimated by the designer. The design lifespan takes into account multiple factors such as the value error of the average lamp lifespan, environmental factors, chip reliability, PCB board design, and heat dissipation system design, and is generally not less than twice the average lamp lifespan.
Typical lifespan: The time during which LED street lights can function normally under specific environmental conditions. This indicator may vary due to factors such as environment, installation method, maintenance situation, and operating conditions.
2, Key factors affecting the lifespan of LED street lights
The lifespan of LED street lights is influenced by various factors, including LED chip quality, heat dissipation design, power supply quality, external environmental conditions, and usage and maintenance methods.
LED chip quality: LED chips are the core components of LED street lights, and their quality directly affects the luminous efficiency and reliability of LED street lights. High quality LED chips have higher luminous efficiency and longer service life.
Heat dissipation design: The heat dissipation effect of LED lamps directly affects the temperature and lifespan of LED chips. Excellent heat dissipation design can reduce the operating temperature of LED chips, thereby improving the service life of LED lighting fixtures.
Power quality: The stability and accuracy of the power supply have a significant impact on the lifespan of LED lighting fixtures. High quality power supply can ensure the stable operation of LED lamps, avoiding damage to LED lamps caused by voltage fluctuations and current surges.
External environmental conditions such as temperature, humidity, and dust can also affect the lifespan of LED street lights. For example, excessively high temperatures can accelerate the aging of LED chips and reduce their lifespan.
Usage and maintenance methods: The correct usage and maintenance methods can extend the service life of LED street lights. For example, regularly cleaning dust and dirt, maintaining the cleanliness and ventilation of lighting fixtures; Avoid improper use and operation that may cause damage to the lighting fixtures.
3, Prediction and maintenance of the lifespan of LED street lights
In order to more accurately predict the lifespan of LED street lights, two methods are usually used: experimental prediction and simulation prediction. Experimental prediction is achieved by conducting accelerated life tests on a large number of LED street lights and recording their failure time, failure mode, and other information to obtain LED street light life information. Simulation prediction is the use of computer simulation methods to simulate the changes in temperature, current, voltage, and other parameters of LED street lights under different conditions, in order to predict the failure time and failure mode of LED street lights.
Scientific maintenance and management are also important means to extend the service life of LED street lights during their use. This includes starting from materials, using high-quality LED chips, heat dissipation materials, PCB boards and other components; Strictly follow the design requirements for production and manufacturing; During product storage and transportation, avoid adverse environments such as mechanical vibration, humidity, and high temperature that may affect the lifespan of LED street lights; During installation, operation, and maintenance, follow the various usage specifications of LED street lights to prevent damage and failure caused by improper use.
4, The actual situation and extension strategy of the lifespan of LED street lights
Although LED street lights have a long theoretical lifespan, their expected usage time in practical applications is usually between 5 to 10 years, depending on product quality, maintenance status, and usage environment. To extend the service life of LED street lights, the following strategies can be adopted:
Choose high-quality products: Choose reputable manufacturers and high-quality products to ensure the quality of key components such as LED chips, heat dissipation systems, and power supplies.
Strengthen heat dissipation design: Optimize heat dissipation design, improve the heat dissipation efficiency of LED lamps, and reduce the operating temperature of LED chips.
Using a stable power supply: Choose a high-quality power supply to ensure the stable operation of LED lamps and avoid damage to LED lamps caused by voltage fluctuations and current surges.
Regular maintenance and inspection: Regularly maintain and inspect LED street lights, clean dust and dirt in a timely manner, and keep the lamps clean and ventilated.
Follow the usage guidelines: Adhere to the usage guidelines of LED street lights to avoid damage to the lamps caused by improper use and operation.
