Power led belong sensitive components, Shandong boxes lights, heat, and reliability are the main factors affecting the application of high-power LED, then the use of high power led light source to pay attention to what the problem? Heat due to limitations of the semiconductor light-emitting diode chip technology, LED photoelectric conversion efficiency to be improved, especially in high-power LED lamp beads, because of its high power, about 60% of the energy will be converted to heat energy released (As semiconductor technology development, light boxes lights, photoelectric conversion efficiency will gradually increase), which requires the end-user in the application of high-power LED product, cooling work to do to ensure high power LED products work properly. 1. Heat sink requirements. Shape and material: do not ask if the finished seal, convection can occur directly with the outside air environment recommended with aluminum or copper fin heat sink. 2. Effective heat dissipation surface area: For 1W high power LED white (other colors basically the same) Some use the unit heat sink, the total surface area to dissipate heat effectively ≥50-60 square centimeters. Recommendations for 3W effective cooling fins sum ≥150 cm surface area, higher power, as the case and test results increase, try to ensure that the heat sink temperature does not exceed 60 ℃. 3. Connection method: When high power LED board and heat sink connection please ensure that the two contact surfaces smooth, good contact, in order to strengthen the degree of integration of the two contact surfaces is recommended in the bottom of the LED board or the heat sink surface is coated with a layer of thermal grease ( thermal grease thermal conductivity ≥3.0W / mk), the requirements of thermal grease applied evenly, the amount and then screw fixation nip. Far lighting large double-sided light boxes, using high-power light-emitting side lights, bus kiosks box lights, the picture is clear, uniform light effect, light boxes bus kiosks lights, high beam illumination (certification), light boxes lights made Far Lighting Technology Limited. Far Lighting Technology Co., Ltd. (www.ygzmkj.com) (www.ygzmkj.com) Shandong Dezhou, advertising lighting leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. Far lighting leadership with the staff warmly welcome all inquiries negotiations to create a far better future lighting.