The service life is prolonged, the production cost is continuously reduced, and the semiconductor light source begins to enter the field of illumination, showing a huge market prospect.
However, any new technology needs a process to achieve the transition of technology, products, and markets. Objectively analyzing the current technical status and future development prospects of the semiconductor lighting industry can correctly grasp the industrial direction and formulate a reasonable development strategy to enable the smooth development of the semiconductor lighting industry.
The reason why semiconductor lighting has a future is due to the following technical advantages:
1, good security
The semiconductor light-emitting diode is a solid-state device of organic resin and semiconductor material and metal material package. The structure is firm, and it will not be loose or broken during normal use, and the illuminant is a cold light source, and the driving circuit has no high voltage, therefore, it will not The high temperature and high internal voltage after the crushing should cause a joint accident, and its own safety and safety to the external environment are good.
2, long service life
LEDs have a lifetime of tens of thousands of hours, incandescent lamps have a lifespan of only a few hundred hours, and fluorescent lamps have a nominal life of only a few thousand hours. Therefore, semiconductor lamps have a much longer life than any conventional light source.
3, high luminous efficiency at low power
In the micro power range below 3 watts, the luminous efficiency of various light sources is greatly reduced, while the luminous efficiency of the luminous tube is kept at a relatively high level. Therefore, the efficacy of semiconductor lamps in micro power illumination is much higher than other. light source.
4, rich in color.
Light-emitting diodes come in a variety of colors to meet the requirements of special lighting other than white light.
5, easy to drive and regulate
The light-emitting diode is a current-type driving device, and the brightness can be changed by changing the current value flowing through the light-emitting diode, so that it is convenient to drive and regulate.
6, small size and light weight.
The semiconductor light-emitting diode is a miniature point source, so it can be made into a small volume and light in weight.
7. Discarded devices do not have heavy metal pollution, which is good for environmental protection.
These technological advantages have determined that semiconductor light-emitting devices will develop into new lighting sources, change the existing lighting industry structure and market structure, and change people's living environment.
However, any new things will have some shortcomings in the early stage of development. Semiconductor lighting is no exception. The current disadvantages of semiconductor lighting are mainly in the following two aspects.
1, high-power LED devices are expensive
At present, the market price of high-power white light-emitting diodes of 1 watt is about 1540 yuan, 2080 yuan of 3 watts, 50120 yuan of 5 watts, which is ten to several times of the price of traditional light sources.
The discharge lamp is also lower than the rare earth trichromatic fluorescent lamp of 60 lumens or more per watt. It is said that semiconductor lighting saves electricity and saves energy. In fact, it is only established in a small power range. When using a semiconductor light source as a high-power lighting fixture, it is not a power saving but a power saving compared with the existing high-efficiency light source.
Another problem with low light efficiency is that a large amount of input electrical energy is converted into thermal energy. It is said that the luminous tube is a cold light source only that the illuminant itself is not a burning body, but the resistance heat generated by the large current on the semiconductor material still causes the luminous tube. The higher temperature is generated, and the light-emitting diode made of semiconductor material is not resistant to high temperature, and the overheating will greatly reduce the service life. The heat dissipation by the heat sink increases the volume of the lamp, and the advantage of the volume and lightness of the semiconductor light source disappears.
According to the above analysis, in terms of luminous efficiency and price level, it is unrealistic for a semiconductor light source to truly enter the general lighting field to replace the conventional light source in a short period of time. To solve these problems, the luminous efficiency of the luminous tube is greatly improved and the production cost is greatly reduced. However, advances in technology take time. Therefore, in the current state of the art, the development of the semiconductor lighting industry needs to develop strengths and avoid weaknesses, and actively develop in the direction of advantages, so that the semiconductor lighting industry in the morning fast lane, thereby promoting its technological progress and maturity of production processes, so that the era of semiconductor lighting has come earlier.
According to the current state of the art of semiconductor light sources, the recent development direction of the semiconductor lighting industry can be located in the following fields.
1. For low-power lighting within 3 watts, it has the advantage that other lighting solutions can't match.
Table lamps, reading lamps, flashlights, miner's lamps, work lights, low-light lighting corridor lights, emergency lights, interior lighting and various signal lights for local lighting. These lighting applications do not require high brightness. The semiconductor lamp within 3 watts is fully capable. The semiconductor lamp made of 16 60mW low-power LEDs can reach 1 watt of electric power, and its brightness exceeds that of a semiconductor lamp made with a single 1 watt high power LED. The current market price of low-power ultra-bright LEDs is about 0.4 yuan/piece, and the price of 16 small-light-emitting tubes is only 6.4 yuan, which is much lower than the price of a single-watt high-power LED. The problem of high cost is alleviated. The market is easy to accept. Other lighting solutions have significantly reduced light efficiency in small power applications. Therefore, in the field of low-power lighting, semiconductor lighting is highly efficient, the price contradiction is not prominent, and the comprehensive advantages are obvious. It can compete with traditional lighting solutions and has market prospects.
2. Lighting in hazardous locations has obvious advantages.
In industrial production, there are many dangerous places where flammable gases are dispersed. In these areas, safety issues are extremely important, and the safety of semiconductor lamps is unparalleled. The use of semiconductor lamps in these locations can completely offset the adverse effects of high price formation, such as miner's lamps in coal mines, petrochemical plants, and field work lights in oil and gas fields.
3. Applications in natural energy lighting systems such as solar energy and wind energy lighting.
Natural energy such as solar energy and wind energy are widely used in areas where there is no electricity supply. However, natural energy can only solve the power of less power. The high-power natural energy supply system is expensive. Because of the difficulty of the source of electricity, power saving is very important. The characteristics of high-efficiency of semiconductor lamps in low-power applications are just playing. Such as grassland pastoral area solar lighting system, unattended solar lights, beacon lights and so on.
4, all the obvious advantages of the field of small volume lighting
Endoscope illumination in medical and industrial applications, internal lighting of instruments, instrumentation, internal lighting of toolboxes, etc. These limited space lighting places are generally large in size and inconvenient to use, and semiconductor lighting has advantages.
5, it is not convenient to repair and replace the lighting place of the lamps
Railway signal lights, navigation lights in unmanned areas, many lighting sources have a short life and are inconvenient to replace. The long life advantage of semiconductor lamps can reduce a lot of trouble.
6, need to flash the place to work
Typical applications for flashing work such as traffic lights, strobe lights for decorative or ballroom, string flash lights, photo flashes, etc. In these applications, many traditional light sources are prematurely damaged by flicker. A light-emitting diode is a quantum device that does not affect the life of the flash.
7, need to change the color of the lighting
Some application areas require control such as discoloration and dimming, such as decorative decorative lighting, table lamps, and bedside lamps in hotels. The convenient adjustment of the brightness of the LED makes these functions easy to control.
After understanding the advantages and disadvantages of semiconductor lighting, the development of semiconductor lighting industry should avoid unfavorable application areas, focus on development in advantageous areas, develop products, actively promote, compete with traditional light sources for the market, and strive for good economic and social benefits.
Theoretically, the light efficiency of LEDs can be greatly improved, and the production cost will be greatly reduced. Therefore, all countries in the world have adopted support policies for the industry, and major enterprises and research institutions in the industry are competing to invest in human and material development. The core technology has made rapid progress. Therefore, in terms of its development trend, the luminous efficiency of commercialized LEDs will exceed 200 lumens in a few years, reaching the current level of high-intensity discharge lamps, and the production cost will be greatly reduced. With this inherent technological potential, the widespread use of semiconductor lighting is an inevitable trend. Therefore, domestic capable enterprises should actively follow up on such a sunrise industry and strive to form an industrial advantage as soon as possible. Whether it is mastering core technology, mastering supporting technologies, or mastering the application market, it is possible to seize business opportunities in the future lighting industry. Get benefits in the transition.
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