From the actual use situation, LED indoor lighting is roughly divided into industrial, commercial and home applications. Industrial indoor lighting is a market where LEDs are cut early and demand is large. The demand for products is more focused on safety, energy saving and long life. For example, industrial and mining lamps generally take high-quality, energy-saving routes and save costs. Commercial lighting focuses on scene effects and user experience, and sometimes introduces special lamps with different angles of color temperature and color rendering for various application environments; while home lighting tends to pay more attention to cost performance, the current characteristic of this field is that it is used in home applications. Mainly downlights, bulbs, etc. have entered the era of low cost. Quality reliability needs to be improved Recently, the proportion of LEDs in the field of general lighting has increased rapidly. It has opened up a broader world for the application of LED indoor lighting in the commercial field. This market is generally mostly for engineering procurement, and the demand for products is large. Therefore, it has become a key market that every manufacturer is striving for now. On the other hand, the general civil lighting market has also been fully opened, and its development speed can not be underestimated. More and more manufacturers have introduced relatively mature LED lighting products, and some products have broken through the traditional lighting in terms of functions and design. category. However, while the indoor lighting is developing rapidly, there is still a big gap in the application market's perception of the quality of LED lamps. LED indoor lamps have many advantages, such as energy saving, long life, safety and reliability, etc., Wu Hongfeng, sales director of Jiangsu International Sales Department Co., Ltd., but in many practical cases, because the end user's perception of LED is not comprehensive, In order to attract users' attention and rapidly increase market share, some merchants have used poor products and technologies, such as: for the brightness, abandoned the life; in order to save energy, abandoned the security, so that some terminal market feedback information is: LED lights have Good, but most are easy to break and the price is not cheap. In response to the negative impact of this short-term interest behavior, he further pointed out that the lighting market is undergoing a new round of changes, including the friction between the traditional lamps and LED lamps, once the advantages of LEDs Being artificially manufactured into shortcomings will make market promotion more difficult, especially in the initial stage of the LED application market being opened. Therefore, enterprises in the industry are urgently required to consciously abide by the technical and quality standards and jointly build a healthy industry development path. Taking the current thermal management problem that has a great influence on the quality of LED indoor bulbs as an example, although LED lighting can significantly save energy, the overall life of the bulb is said to be 30,000 to 50,000 hours; in fact, often because of LED Many components in the drive circuit, especially electrolytic capacitors, age with increasing temperature, causing excess heat in the retrofitted luminaire to significantly reduce the life of the solid-state lighting bulb, which also allows consumers to expect a high quality LED luminaire. discount. Hubie Notohamiprodjo, director of marketing for solid-state lighting products at Dialog Semiconductors, explains: The main reason for these problems is that some bulb designers are unclear about the environment and state of use of the bulbs, and sometimes use poorly designed applications in air-flow limited applications. The thermal energy system causes the lamps to overheat and greatly reduces the service life of the solid state lighting bulbs. In order to effectively solve the above problems, unlike ordinary integrated circuits, which have a thermal shutdown device and cut off the design of the integrated circuit only in a high temperature environment, Dialog's LED driver adopts a patented overheat protection derating technology, in a high temperature environment, Automatically reduces the drive current into the LED in subtle steps; when the temperature drops, it seamlessly restores brightness, reducing the operating temperature in the low-flow bulb environment, avoiding it exceeding the rated temperature of the electrolytic capacitor, and helping Achieve predictable lamp life. Achieving the best price-performance ratio of LED indoor lighting is still largely related to the decline in product prices. In particular, the biggest challenge in the development of indoor lighting is how to achieve a suitable price point for the product, while at the same time achieving reasonable Performance and safety standards. Among them, the cost of the LED lamp 30 is spent on the drive control circuit, so the cost reduction of the control circuit including the LED driver IC is very important, which also requires the chip manufacturer to continuously introduce innovative and more cost-effective technical solutions. The price of LED light sources is declining, but the driving electronics technology has not been much innovative, and the price has been high, which has brought pressure on product costs. Guan Zhenyuan, technical marketing manager of Marvell's LED driver chip product line, said that dimmable LED lamps will become the mainstream products in the market, but a key point in the development of LED lighting driver ICs is the compatibility of dimming, which directly affects users. The use experience, because LED lighting mostly uses the current drive mode, and the existing dimmers are mostly voltage dimming, so there are certain difficulties in compatibility. At the same time, further increasing the integration of the chip to reduce the size of the power supply is also the main direction for the future development of the LED power supply. According to reports, Marvell uses a unique mixed-signal architecture and built-in advanced digital algorithms, which greatly enhances integration and reduces product cost. Marvell's cost-effective chip solution this year has reduced the price of dimming products from $1.50 to less than $1 last year. It is expected that by 2016, dimming bulbs will be close to non-dimming prices, thus accelerating the popularity of LED lighting.
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