It is difficult for LED lights to enter people's homes. The characteristics and performance improvement of white LEDs have been introduced, and white LED lights for various occasions have been developed, but LED lights are difficult to enter people's homes. This is not a problem in production. The main reason is that the luminous efficiency of white LED lighting is not very high, and the price is too expensive, making it difficult for ordinary people to accept. Comparing the prices of commonly used incandescent lamps, energy-saving fluorescent lamps and white LED lamps of the same brightness, the unit price of 1W white LEDs is 8-10 yuan, and the unit price of 3W is 20-25 yuan (related to the quality and brand of LEDs). To drive circuits and structural components. Considering the profit and commercial profit of the manufacturer, the unit price may be more than 120 yuan.

Where is the LED light road? The promotion and popularization of white LED lighting is of great significance, but there is still a lot of work to be done to enter the homes of the common people in my country. The promotion and popularization of white LED lighting is a systematic project and a major project, which requires national planning, guidance and support, as well as policy and economic support. my country has established four semiconductor lighting bases and related scientific research units in Shanghai, Nanchang, Dalian and Xiamen, and they will play a major role in the promotion of LED lights. Although LED lighting is still difficult to enter people's homes, there are still many fields where LED lighting can be widely used. The application in these fields can promote the production of high-power white LEDs, can promote the improvement of technology, and can reduce the production cost. More experience can also be obtained in the design and application of LED lighting, which is conducive to future promotion. These application fields are all large consumers of electricity and play a great role in saving energy. They are: 1. Street lighting systems for town streets (including solar street lighting systems); 2. Tunnels and underground parking lots (including underground shopping malls); 3. Lighting of vehicles (interior and partly exterior of cars, trams, ships, airplanes, etc.) 4. LED lighting systems in large public places, such as railway stations, subway stations, airports, large supermarkets, large department stores, buildings and hospitals, etc.; 5. LED lighting projects in non-electric areas. Because LED lighting generally uses low-voltage DC (constant current) power supply. If the AC 220V mains power supply is used, a special transformer device is required to output low-voltage DC power (such as 12V, 24V, etc.) and the LED driver is used to drive the LED lights. Therefore, it is better to consider the use of LED lights when building these buildings, and it is much more economical to design them in the architectural design. However, if the lighting system of the original fluorescent lamps used in the building is to be transformed into LED lighting, the transformation cost is high and the transformation time is long (such as the transformation of the lighting system of a subway station or a waiting hall). The new LED lighting power supply system needs to be more complicated than the traditional lighting power supply system, and the cost is much higher. If there is no policy support and economic support, it will be difficult to succeed.