With the global consensus on the development of a low-carbon economy, the LED lighting industry has become the main new type of lighting source in the 21st century by virtue of its performance advantages in the field of energy saving and consumption reduction. Its application range has also replaced many traditional light source usage scenarios. It is used in various fields such as indication, display, decoration, backlight source, general lighting and urban landscape lighting.

In the development of the LED lighting industry, outdoor lighting has become a fast-growing branch. Using LED lights as outdoor lighting fixtures means that the LEDs must work stably for a long time under harsh outdoor conditions. Therefore, the waterproof technology of the fixtures is extremely critical.

LED is suitable for working in a dry and low temperature environment. If the LED lamp gets damp or water enters, it will damage the LED, PCB and other components. At present, waterproof led light technology is mainly divided into two directions: structural waterproofing and material-assisted waterproofing. The so-called structural waterproofing means that after the various structural components of the waterproof led light are combined, they already have the waterproof function. The material-assisted waterproofing refers to the position of sealing the electrical components with materials such as potting glue when designing the product, and using sealing materials to achieve auxiliary waterproofing during assembly. The two waterproof designs are suitable for different product routes, and each has its own advantages.

The waterproof led light based on the structural waterproof design needs to be tightly matched with the silicone sealing ring for waterproofing. The shell structure is more sophisticated and complex. It is usually suitable for large-sized lamps, such as strip floodlights, square and round floodlights, etc. High-power lamps. Structure waterproof led light is only for pure mechanical structure assembly, simple tools, few assembly procedures and processes, short final assembly cycle, and convenient and quick repair on the production line. The waterproof led light can be packaged and shipped after passing the electrical performance and waterproof test. It is suitable for projects with a short lead time. But the structural waterproof led light design has higher machining requirements, and the size of each component must be precisely matched. Only suitable materials and structures can guarantee its waterproof performance.

Regardless of the structure of waterproof led light or the material of waterproof led light, for outdoor luminaires that require long-term stable operation and low failure rate, a single waterproof design is difficult to achieve extremely high reliability, and the potential for water seepage still exists.

Therefore, in the design of high-end outdoor LED lamps, it is recommended to use waterproof technology flexibly, combine the advantages of structural waterproof led light and material waterproof led light technology, maximize strengths and avoid weaknesses to ensure long-term stable operation of LED circuits and improve the long-term stability of outdoor lighting Reduce damp failure rate.