The luminous characters of outdoor advertising signs are generally used outdoors, which will inevitably bring the test of harsh environment to the materials of the luminous characters of outdoor advertising, including light. They should withstand the test of high temperature in summer, the freezing cold in winter, the ravages of typhoons, and the scouring of rainstorm. However, the biggest test of LED luminous characters is the high temperature in summer, How to ensure effective heat dissipation of luminescent characters under the scorching sun is particularly important, as high temperatures cannot dissipate, which will inevitably lead to rapid aging or direct damage of LED light sources. So, how does the LED light source in official luminescent characters dissipate heat? The following editor will introduce and introduce to you.

Heat dissipation method for luminescent characters

In addition, high-power LED lights require no electromagnetic interference due to their small size and high power, which also increases the difficulty of heat dissipation. There are many types of LED heat dissipation solutions, mainly including aluminum alloy heat dissipation fins, thermal conductive plastic shells, fans, thermal pipes, external radiation heat dissipation treatment, and so on. Among them, aluminum alloy heat sinks and fans are currently the most common heat dissipation methods. However, with the increasing demand for light output in LED lighting, the heat flux density of LED lighting has been increasing, and the amount of heat required to cool down per unit time is also increasing. Therefore, the biggest challenge currently is actually to reduce the heat flux density.

Advantages of LED

Advantages of LED: It has high photoelectric conversion efficiency, which is greatly improved compared to traditional light sources. However, due to the limitations of current technological development, the efficiency of LED is only about 15-20% converted into light energy, which means up to 80-85% converted into thermal energy.