Highway tunnel solar LED lighting can replace the existing conventional lighting system?

The 1

With the rapid development of economy, the demand of electric power in our country increases by more than 20% every year. According to the current trend of economic development and China's resources, in 2010 and in 2020 the power supply alone on the traditional coal, water, nuclear is not enough, there is still a gap, the need to generate electricity from renewable energy to fill. The conventional lighting system currently used in power consumption and the cost is high and there are security risks, therefore, in 2004 the west traffic construction scientific and technological project management center of the "highway tunnel solar lighting system research" project driven, domestic related research has been carried out.

2 domestic research status analysis

The development of highway tunnel lighting in our country starts late, the foundation is poor, especially for the tunnel lighting and the characteristics of the lack of in-depth research, design, manufacture of lamps and abroad there is a big gap. In recent years, in addition to the Fudan University, Shanghai Lighting Research Institute, Chongqing communications research and Design Institute, Zhejiang transportation planning and Design Institute and other research has certain conditions and test equipment, and has gradually begun to pay attention to the lamp outside the tunnel, most manufacturers do not have highway tunnel lighting lamps research conditions and test equipment, the independent development of tunnel lighting ability. Most of the domestic tunnel lamps and lanterns factory is mainly engaged in the production of lighting equipment in other fields, the technology, the technology and the equipment are backward, the production is scattered, the specialization level is low, the benefit is not high.

In the development of China's highway tunnel lighting, the lack of adequate understanding and necessary inputs, compared with the concentration of foreign lighting industry production, far from the economic scale. The highway tunnel once put into use, the lighting system under normal light condition is almost long, so the tunnel lighting effect should be a reliable source to achieve, and choose a suitable light source is an important part of the long tunnel lighting. While domestic use most of the existing tunnel lamp light, narrow light distribution quality is not enough, high energy consumption, poor stability, short service life, the grade is not high, a direct result of road tunnel lighting effect is poor, can not meet the requirements of highway tunnel lighting, serious impact on traffic safety, so the source of the tunnel lighting tunnel should meet the specific environment the light efficiency, luminous flux, life, light and color requirements, but also ensure good visibility in the form of emission of smoke in the car.

Therefore, the total power consumption for short tunnel lighting system to reduce, reduce the cost of solar power supply system, power supply to meet away from the places of the lighting requirements, energy saving and environmental protection at home and abroad are under great pressure to adopt relevant policies to encourage and promote LED lighting products in order to reduce the power consumption of the system.

In recent years, with the continuous improvement of the level of LED technology research, the use of LED lighting research gradually. LightResearch Center research center in the United States in the LED technology research, developed a kind of blue, yellow wave long semiconductor light source, the light emitted by the people feel white light. The light effect of this kind of LED is 10 times higher than that of LED on the market at present, but it has not been commercialized yet. Another company 0SRAM 0S company developed a thin MD, only 6mm high, the edge of the installation (s5de-mounted) will light into a light guide material (Hght-guidemateria), its light evenly distributed surface. This module can be used by manufacturers lamp factory, built into the product, channel, corridor, theatre or cinema seat directional lighting, its energy consumption from a module watt to several watts range.

The LED related products, Austria lighting design company uses 14000 white light and color LED hybrid lighting the entire room, the light level of 600 ~ 700Lux, enough for a general office lighting. The effect of white light, blue light, blue / green light, amber and red light diode is calculated by computer, and the warm color temperature of 2500 ~ 3000K is obtained.

In Sweden, the SwedZsh NationalRoad AdminZstration uses LED as a traffic light to reduce the demand for traditional traffic lights with high calorific value.

In 2005, the United States, Japan, Europe eight group company composed of solid state lighting system and ASSIST technology alliance to develop the "LED life" technical standards for general lighting, the provisions of the definition, measurement devices and systems of ordinary life LED.

The same year, Japan issued to improve energy use and promote the tax law, enterprises or institutions specified the use of LED lighting to replace incandescent lighting, can get 130% of the amount of investment excess depreciation, or investment of 7% of the tax relief. The European Union in July 2006 began to implement the "Prohibition of the use of certain hazardous substances in electrical and electronic equipment", the mercury restriction fluorescent lamp; California lawmakers have proposed to the 2012 implementation of the ban of incandescent lamp; in February 2007 the Australian government announced that it would phase out incandescent lamp.

The domestic LED is only in the initial stage of lighting applications. In order to make the LED into the field of lighting, the national "863" plan to grant new materials in the field, so that the relevant industries have made significant progress. Some research institutes, such as the Chinese Academy of Sciences and the Changchun Institute of Optics and physics, Peking University, Beijing Institute of nonferrous metals, Shijiazhuang thirteen units have also carried out research in this area. At present, gratifying progress has been made, which is shortening the gap with the international advanced level. Most of the current market white LED is the domestic LED manufacturers using imported chips and phosphor packaging. As a result of the technical strength and the independent development ability is weak, the blue chip choice and