LED wall washers, as the name suggests, let the lights wash the walls like water, mainly used for architectural lighting, as well as outlines of large buildings. Because LED has the characteristics of energy saving, high luminous efficiency, rich color and long life, in 2013, the wall washers of other light sources were gradually replaced by LED wall washers.
The power module of the LED wall washer is installed inside the casing, and the space is limited. Some manufacturers can solder the surface of the pin-type component to the PCB in order to save space. This is unacceptable. These surface-welded pin-type components are likely to fall off due to soldering or the like, posing a hazard. Therefore, it is necessary to adopt a jack welding method for these components. If the surface welding method has to be used, it is necessary to provide additional protection for the component by means of glue fixing.