Structural surplus of the industry as a whole so that the rapid deterioration of the business survival status, some companies have closed down. From the case analysis, the collapse of the enterprise itself is clearly more major, but the crisis has made the problem much faster exposed. Because some good corporate business, adverse economic growth in 2011 difficult situation still. However, most business enterprises in the industry down turn, have to consume valuable cash flow as well as multi-party financing in order to survive the storm. If this state as soon as possible in the past to survive the companies may face a better explosive growth. Accordance with China’s current MOCVD installed capacity, if the capacity to fully release, mainland China will become the global LED high power bulbs industry, the most concentrated and most complete industrial chain, the largest output, the highest value areas. However, if the duration is too long, eating up all the cash flows also have to bear the high rate of assets and liabilities continue to operate if the depletion of the vigor of the enterprise is bound to affect the long-term competitiveness, worse still struggling after the forced bankruptcy cause the risk of unemployment and poured account, the entire industry have suffered.

 

To strengthen the R and D of new products. The trade surplus caused by falling prices, is bound to further enhance the existing market penetration, also gave birth to a new market. Some because the price is the problem before acceptance of the LED high power bulbs market is also likely to enter the main lanes of LED high bay applications, the birth of new market opportunities.

 

 

Here we are not prepared to discuss the problem of how to design a radiator, but to discuss a radiator cooling effect is relatively good question. In fact, this is a junction temperature of the measurement problem, if we can measure the junction temperature of a radiator that can be achieved, then not only can compare the radiator cooling effect, but also know that using this radiator can achieve led high power bulbs life.

 

Junction temperature appears to be a temperature measurement, but the junction temperature to be measured inside the led high bay, we can not take a thermometer or thermocouple into the PN junction to measure its temperature. Of course, the case temperature can still be measured with a thermocouple, and then given thermal resistance Rjc (junction to case), one can calculate the junction temperature. But after a good radiator is installed, the problem becomes complicated by the Because usually the led high power bulbs is soldered to the aluminum plate, aluminum plate installed on the radiator, if only measuring the temperature of the radiator shell, then to calculate the junction temperature must know a lot of thermal resistance value of. Including Rjc (junction to case), RCM (housing to the aluminum plate, which should include the thermal resistance of the film printed version), Rms (aluminum plate to the radiator), of Rsa (radiator to the air), which has a data inaccurate will affect the accuracy of the test. Figure 3 shows a schematic diagram of the LED to the various thermal resistance of the radiator. Merged a lot of thermal resistance, and its accuracy is more restricted. In other words, the radiator surface temperature to infer from the measured junction temperature accuracy is even worse.

 

 

Compared to foreign enterprises and domestic enterprises is relatively weak in the patent can not be denied the status quo is the original patent of domestic rare part caused by this reason, both the “innate” external factors, there are also internal dictates. She briefly summarized the main reasons are as follows: “LED high power bulbs technology in the development of advanced European countries and has long been coupled with these countries attached considerable importance to intellectual property rights, latecomers congenital layout that is less favorable in a number of patents applied for and open circumstances, to overcome the patent novelty elements to obtain the original patent is not easy. In addition, the independent technology, many domestic enterprises are still unfamiliar with the concept of intellectual property rights, or even a misunderstanding, so that in the event of patent litigation, timely response to. ”

 

In recent years, foreign companies continue to increase the number of patent applications in China, this initiative will undoubtedly pose a threat to domestic enterprises. Subjected to other competitors, the threat of the patent in the patent is the exclusive right of an industry the number of patents is more intensive, the more likely to increase to led high bay market. And stressed once again reminded: “need to be careful to respond to.

 

LED high power bulbs patent will be continuous and endless. Future possibility of change, although unpredictable, is not without a trace. With the increasingly popular lighting applications, it is foreseeable that in the patent of the enterprise in the face of the competition will be increasingly important. Domestic enterprises can improve the understanding of the patent, the patent challenge, and can self-development of the core value of intellectual property.