What are the shortcomings of the original design of LED wall washing lamp and how to improve it?

Wall washing lamp, as the name implies, let the light wash the wall like water, mainly used to do architectural decoration lighting, but also used to outline the outline of large buildings, because LED has energy saving, high light efficiency, rich colors, long life and other characteristics, so other light source wall washing lamp is gradually replaced by LED wall washing lamp.
First, heat dissipation.
Whether the shell of the LED wall washing lamp is hot or not depends on the thermal path in which the LED heat sink is separated by air, even if the power of the lamp is only 18W, the temperature difference between the LED heat sink and the shell may exceed 30 degrees after heat balance.
However, if this way is full of high thermal conductivity, the temperature difference can be controlled between 10 and 15 degrees.
In this case, it is reasonable not to be hot, so the aluminum substrate must be close to the lamp housing when designed.
Second, the sealing of glass and lamp shell is not recommended to use viscose, viscose will not only reduce the production efficiency of LED wall washing lamp, but also bring waterproof unsafe and unmaintainable problems.
If there is a small part of poor bonding, then the whole lamp will be scrapped.
If the appearance is handled well enough, it can be fixed with screws, and the current popular compact structure is also relatively reasonable.
In addition to the relatively slow production efficiency, we also need to pay attention to control the size and hardness of the rubber ring, too thick and too hard will greatly increase the difficulty of installation, too fine will lead to too tight glass pressure, rubber washer hardness of about 35 is more suitable for LED wall washing lamp.
Third, the protection design of wire hole.
When selecting protective screws for wire holes, PG7 or PG9 screws with round rubber washers can not be selected. This structure cannot stand the test of time, and aprons are often crushed on the production line.
Apron Z is good to choose flat cushion structure, edge width more than 3 mm, thickness more than 1.5 mm, as well as steel screws to choose.
Fourth, the problem of air dryness in high-power LED wall washing lamp can not be ignored, because the space of wall washing lamp is very large.
If the air is not dry enough during the sealing process, when the high temperature is not as expected, small water droplets may appear on the glass, resulting in the illusion of water inflow.
Therefore, it is not recommended to seal the lamp in a wet environment.
If there are no conditions to ensure a dry environment, remember to add an air respirator when designing the lamp.