[Solar Light Factory School] How to solve the problem of solar LED street light failure (picture)

Last time we discussed the reason for the failure of solar LED street lights because the LED lights did not get heat. To solve the problem of serious light decay of solar LED street lights, it is necessary to solve the fundamental problem of LED heat dissipation technology. To solve the problem, it is recommended that solar LED street lamp manufacturers start with basic materials and solve the problem of high-power LED heat sources from the inside out. Some manufacturers think that the thermal conductivity of thermally conductive adhesive film or thermally conductive adhesive pad is better, and the film thickness should be as thick as possible, but they did not think about thermal resistance. No matter how good the thermal conductivity is, the thermal resistance of the film thickness is useless. If the thermal resistance is low, it is necessary to use the thermal conductive adhesive. The soft ceramic thermal conductive adhesive for screen printing is recommended. The soft ceramic thermal conductive adhesive for solar LED street lamp screen printing construction is different from the traditional laminating thermal conductive film. The soft ceramic thermal conductive adhesive is soft and semi-liquid. When the screen printer squeegee is applied to the aluminum substrate, the thermal conductive particles will penetrate the surface of the substrate The pores should be filled to the full. In this way, a completely flat surface with no pores will be formed, and it will be completely adhered to the LED epitaxial substrate. In this way, the thermal resistance is reduced to a minimum, and the heat can be quickly transferred out, which naturally reduces the ambient temperature of the LED die, prolongs the life of the epitaxy and greatly delays the occurrence of light decay. Due to the ductility of the soft ceramic thermal conductive paint for screen printing construction, solar LED street lights will change with the thermal expansion and contraction of the aluminum substrate during high-temperature baking or reflow. The stress is very small and will not cause the aluminum substrate to warp. It will not burst. It is recommended to use soft ceramic heat-dissipating paint for LED lamps for the external protection of solar LED street lamps. The sprayed soft ceramic heat dissipation paint can be directly sprayed on the outside of the LED lamps, and the construction is simple and easy to operate. It can adapt to various shapes of heat dissipation structures, and can also be adjusted to different colors to meet the needs of landscape design. The soft ceramic particles in the sprayed heat dissipation paint are nano-processed. The fine particles are not only easy to operate with the spray gun, but also make the heat conductive particles on the same coated area more and more dense, and the area where the temperature evaporates and diffuses becomes larger. Let the heat of the LED lamps be quickly conducted out. Therefore, in solving the heat dissipation problem of solar LED street lights, do not lean toward purchasing thinking or production management thinking, but from applying materials to reduce costs, improve quality and increase profits from an innovative perspective. This information is exclusively provided by the solar lamp factory lighting, source: http://./ledld.html