What are the precautions for LED outdoor lights?

Update:20 Oct 2020
Summary:1) Working environmentDue to the harsh working environment o...

1) Working environment
Due to the harsh working environment of LED outdoor lighting, it is affected by wind, rain and sun, ultraviolet rays in the sun, changes in temperature between day and night, sand and dust in the air, chemical gases and other conditions. . The influence of these factors should be fully considered when designing.
2) Selection of LED lighting materials and heat dissipation methods
The shell and the heat sink are designed as a whole to solve the heating problem of the LED. This method is better. Generally, aluminum or aluminum alloy, copper or copper alloy, and other alloys with good thermal conductivity are used. Heat dissipation includes air convection heat dissipation, strong wind cooling heat dissipation and heat pipe heat dissipation. (Air jet cooling is also a kind of heat dissipation similar to heat pipe heat dissipation, but the structure is more complicated.)
3) Packaging of LED chips
At present, most domestically produced LED lamps (mainly street lamps) are assembled with multiple 1W LEDs in series and parallel. This method has higher thermal resistance than products with advanced packaging technology, and it is not easy to produce high-quality lamps. Or use 30W, 50W or even larger modules for assembly to achieve the required power. The packaging materials of these LEDs are encapsulated with epoxy resin and encapsulated with silicone. The difference between the two is: epoxy resin encapsulation has poor temperature resistance and is easy to age over time. Silicone encapsulation has better temperature resistance, so you should pay attention to selection when using it.

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