LED industry short board - structural design is seriously lagging behind
The high price of LED products is a barrier to popularization. The price factor determines the price/performance ratio. Whether the advantages and prices of lamps can be accepted by the public is one of the important factors affecting the replacement of traditional lamps by LED lamps.
LED chips use the larger size LED wafer fabrication process with the increase of process and quantity, which will continuously reduce the cost. In recent years, the speed is reduced by 20% every year. In the price factor of LED chips, the improvement of light efficiency is also included in the price reduction. In the same price, I bought a better product. LED chips account for 15% of the proportion is still very reasonable, and will continue to maintain this level in the future.
LED packaging costs account for a considerable proportion of the price, about 50%, we must choose a more suitable package structure. Cree, Lumileds, and OSRAM's existing packages do not meet the lighting design needs, and the design cost will remain high. Bold and innovative design is the way out for product design. Most of us still follow the plagiarism of large company packaging structure thinking, too little innovation, and lack of confidence in our own innovation. COB is the mainstream way of future lighting design, COB packaging according to the optical requirements of the luminaire, while reducing the cost of secondary optical design. The cost of packaging is more reasonable at 20-30% of the total cost of the luminaire.
The actual LED chip cost is only 15%, and other costs mainly come to packaging, heat dissipation, structural cost, and power supply. From the perspective of the cost composition, it is in the manufacturing process to reduce the cost of the lamp. It is not too much to simply reduce the LED chip. The manufacture of lamps requires reasonable overall price, reasonable planning, and comprehensive requirements for a certain part of the cheaper, but the overall structure of the lamps we design is economical and the most important.
The design now accounts for about 20% of the cost of the luminaire, which is somewhat high. With the development of technology, the power supply is probably 5-10% most reasonable. The actual heat dissipation design is very simple, and it can be used in two directions: First, the shorter the path between the LED chip and the LED external heat sink, the shorter the heat dissipation design is. The second is that the heat dissipation resistance is enough to have sufficient heat dissipation. There must be enough “cooling roads†to reach the path. This part of the cost is mainly in the structure, and the cost for cooling is not much. The cost of cooling should be maintained at 20%. The hardworking people in China have always been very low-priced, and the 20% cost is considered reasonable. The biggest problem is how to be more innovative and more reasonable in design. The structural design accounts for LED power supply, which is the weakest link of LED lamps. It is seriously lagging behind the development of LED lamps, and the quality needs to be improved.
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