The new wall washer manufacturer evolved from the original LED linear lamp. After nearly 10 years of development, the technology has become more mature and the application range has also been greatly increased. However, for the current lighting designer, the wall washer The design is still a thorny problem. The two major bottlenecks of waterproof and heat dissipation seem to be solved, but if you want to comprehensively filter out the appearance, assembly, maintenance, waterproof, heat dissipation, energy saving, cost and other issues, design a reasonable washing machine. The difficulty of the wall is still very big.

   The original designer of the new wall washer was limited by the technical level of the industry at the time, considering both waterproofing and maintenance. Driven by the accessory industry chain, this structure has been enlarged and popularized by the market at once, and even continues to this day. There are still many people using this structure. Those who can design lamps understand the hidden end of this structure, and I will not nag here. NS.

 The new LED wall washer technology is advancing in general. It has been developed to the present, the lamp body is fully involved in heat dissipation, and the glass pressing and detachable structure basically solves the problem and satisfies the conditions of use, but the details are not completely reasonable. Some people’s lamps still have large and small problems. In addition to waterproof problems, these problems also include appearance problems, assembly and disassembly problems, production efficiency problems, cost problems, lighting effects, etc. The author summarizes the following points based on the experience in recent years Experience, hope to help your design.

First, heat dissipation. In fact, many people who do LED lamps do not understand heat dissipation. Many people touch the shell. So whether the shell is hot or not, of course neither is a reasonable answer. The final answer is whether it is hot or not. Look at the thermal path from the LED heat sink to the housing. If any level is separated by air on this path, even if the power of the lamp is only 18W, it is completely possible that the temperature difference between the LED heat sink and the housing is more than 30 degrees after thermal equilibrium. If our door is filled with high thermal conductivity materials in this way, the temperature difference is completely possible to be controlled within 10~15 degrees. In this case, it is reasonable not to be hot. Therefore, the aluminum substrate must be made with the lamp shell when designing Completely close, if you think that filling the thermal material between the aluminum substrate and the lamp body will bring cost and operational troubles, then you can make the two close as much as possible, and then fill the aluminum substrate with a layer of thermally conductive silica gel, which is It can conduct heat directly to the lamp housing, fix the secondary lens, and prevent the moisture in the cavity from directly corroding the LED. The thickness of the potting is recommended to exceed 2mm of the aluminum substrate.