In LED lighting, the heat dissipation material directly affects the quality and life of the luminaire, which is a crucial part. At present, the aluminum substrate has been widely used by LED engineering lighting products due to its low cost, low density, and mature surface treatment technology, and has become a mainstream heat dissipation material. However, we know that the aluminum substrate is made up of "metal + insulation + metal". The metal is conductive and heat-conductive, but it is easy to leak electric shock. The insulation is not conductive but the thermal conductivity is very poor, resulting in overheating, so both heat dissipation and insulation. It is not a good balance. After many years of exploration and research and development, a ceramic integrated lamp with good heat dissipation and electrical insulation stands out.
Advantages of ceramic materials used in LED engineering lighting products
1. The ceramics used in the integrated lamps have small heat capacity, do not store heat themselves, and can directly dissipate heat. They do not form a “hot ladder†like the “metal + insulation layer + metal†stacked, which affects the LED engineering lighting products. Overall heat dissipation;
2. Although the thermal conductivity of the ceramic material is not metal, the ceramic itself is a microporous structure, which can greatly increase the heat dissipation area in contact with the air, thereby greatly enhancing the heat dissipation effect. Compared with the lamp body composed of aluminum material superimposed with metal material, under the natural convection state, the active radiation heat dissipation capability of the ceramic integrated lamp is 8.8 times stronger, and the heat dissipation advantage is obvious;
3, the ceramic material itself is not conductive, is a good insulator, can effectively improve the safety of the use of LED engineering lighting products, which is not available in other metal materials. Comprehensive consideration of the application of ceramic materials in LED engineering lighting products is the most suitable insulating material;
4, ceramic itself insulation, high temperature resistance, oxidation resistance, acid and alkali resistance, cold and heat shock resistance, low thermal expansion coefficient, to ensure the stability of LED engineering lighting products in high and low temperature environment or other harsh environment;
5, ceramic can withstand high voltage, can prevent leakage breakdown, no noise, will not produce coupling parasitic capacitance with LED engineering lighting products, and thus simplify the filtering process; the required creepage distance is shorter than the metal body requirements, further saving The LED engineering lighting product space is more conducive to the design of engineers and the passage of electrical certification;
6, ceramics can effectively prevent interference, anti-static effects, and absorb moisture, dust, does not affect the protective effect of LED engineering lighting products;
7. The ceramic is small in size, light in weight, does not occupy space, saves materials, saves freight, and is more conducive to the rational layout of LED engineering lighting product design;
8. Ceramics are inorganic materials and are used in LED engineering lighting products, which are more in line with national energy conservation and environmental protection policies.
Application of ceramic materials in LED engineering lighting products
Due to the unique material characteristics of the appeal, ceramic heat-dissipating materials are favored by high-end LED engineering lighting products. A variety of high-end LED engineering lighting products developed and produced by Shanghai Sansi have used high-quality ceramics as heat sinks. The ceramic heat-dissipating material completely removes the use of non-ferrous metals, which fundamentally guarantees the safety of the lamps and eliminates the leakage of the mains; at the same time, each module pixel is independently cooled, and the heat dissipation is more timely and sufficient, so that the life of the lamps is qualitative. Ascension and leap.
Application examples of ceramic materials LED engineering lighting products:
Shanxi Provincial Administrative Village Street Lighting Project
The administrative lighting of the administrative village street in Shanxi Province adopts the Shanghai Sansi LED ceramic pixel curved street lamp MR&LR&PR series. This series of products not only utilizes the power supply, but also the green design, and incorporates the unique design of Shanghai Sansi - "Cellular convection cooling structure" Compared with the traditional light source, the energy saving effect is very remarkable, and the energy saving rate is as high as 60%. Since the LED street lamp is lit up, there is no fault and the product quality is perfect, and the excellent repair rate is zero.
Hong Kong-Zhuhai-Macao Bridge Project (under construction)
The Hong Kong-Zhuhai-Macao Bridge project uses the Shanghai Sansi LED ceramic pixel curved street lamp MR&LR&PR series. The series uses ceramic heat sink and honeycomb convection heat dissipation technology. This technology was selected as the national key energy-saving low-carbon technology promotion catalogue in 2015, and there is no non-ferrous metal. The independent pixels disperse heat, and the heat loss is more complete and thorough. At the same time, it can adapt to the multi-vibration and salt spray environment of the sea bridge, withstand voltage and corrosion resistance, and the life and reliability are improved.
The JUK universal Screw Terminal Block series has the typical features which are decisive for practical applications:
l The universal foot allows the terminal blocks to be easily snapped onto the NS35 or NS32 DIN Rail with G shape.
l Closed screw guide holes ensure screwdriver operation perfect.
l For terminal block with different wire cross-sectional areas, complete accessories are available, such as end plates, partition plates, etc.
l Potential distribution achieved by fixed bridges in the terminal center or insertion bridges in the clamping space.
l Same shape and pitch Grounding Terminal Blocks as the JUK universal series.
l Adopt ZB marker strip system,achieve unified identification.
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