Design can not only change life, but also change the world. In this ever-changing era, technology is a hard condition for development, and design penetrates into every corner of people's lives with soft power. With the development of lighting technology and the development of LED technology, the application of LED lighting in daily life has become more and more common. How to develop and design excellent LED lighting products, firmly attract customers' attention, and quickly seize market opportunities, has become the goal that every lighting design worker has tried to achieve.
Figure 1 Rendering of T2 Terminal Building of Chengdu Shuangliu International Airport
Chengdu is known as the “land of abundanceâ€, and Chengdu Shuangliu International Airport is the link between Tianfu’s country and the rest of the world. The T2 terminal building of Chengdu Shuangliu International Airport (hereinafter referred to as “Chengdu Airport New Terminal Buildingâ€) started construction in 2009 and was basically completed in April 2012. During this period, the author was fortunate to participate in the lighting design of the interior hardcovering project of the T2 terminal of Chengdu Shuangliu International Airport and the whole process of R&D, manufacturing, installation and commissioning of LED lighting. In this process, as the designer, we are in the same direction as the users, and carry out in-depth communication and discussion on the relationship between the building and lighting of the terminal building. We really feel the user's demand for lighting and LED lighting products. At the same time, I also have a sense of the development direction of LED lighting design. Combining its many years of LED lighting product design and R&D experience, the author believes that the design of modern LED lighting fixtures has the following development characteristics and trends:
First, green lighting, energy-saving lighting design has become the primary task of lighting design and LED lighting design
With the continuous improvement of people's living standards, people's pursuit of quality of life is getting higher and higher. Similarly, lighting is not limited to the brightness of visual effects. As the fourth generation of light source in the process of human illumination, LED has unparalleled advancement compared with traditional illumination sources. It is not only a subversive difference in luminous mechanism and luminous efficiency, but also far more important than this. Yes, the impact of LED lighting on global energy consumption and on the global climate, these two factors that are vital to human survival, have been reduced at an unprecedented rate.
In the 21st century of technological explosion, global politics and economy are rapidly changing. Energy and climate issues have become the hot issues of national development, and lighting is the meeting point of these two issues. In the energy consumption rankings, lighting ranked first, accounting for about 25%. At present, the United States, Russia, Japan, South Korea and other major economic countries have introduced the traditional light source elimination directive policy and LED lighting popularization program, and China is no exception. This year, an announcement has been issued that incandescent light bulbs will be gradually banned.
Figure 2 Reform process of each generation of illumination sources
On this issue, the direction chosen by the state and the enterprise is the same. At the beginning of the Chengdu Airport project, it was clear that the indoor lighting of the new terminal building will use LED lighting, so that the cost of electricity in the operating costs of the entire airport can be greatly reduced. However, under the premise of using LED light source, how to further improve the energy-saving lighting of the lamp? This is a new topic in front of us, and it is also a question worthy of deep thinking in the design and development of LED lighting.
In the interior decoration project of the new terminal building of Chengdu Airport, for the downlight products, the requirement of using LED light source ≥110 lm/W and the whole lighting efficiency ≥65 lm/W is clearly proposed. It is a very high indicator requirement, which is also the technical level that LED light source has been developed in the last one or two years.
Figure 3 White LED luminous efficiency is increasing year by year
In the design and development process of the LED lighting of the new terminal of Chengdu Airport, all our designs are carried out around the main line of how to improve the light efficiency of the products. From the design, testing and analysis of the power supply, the selection of the LEDs, the arrangement of the arrays, The requirements of the haze of the light board, the color of the silk screen font on the PCB, are conscientious, meticulous, and do our utmost to improve the light efficiency. Finally, tested by a third-party testing agency, the most typical downlight - round embedded downlight, the overall lighting efficiency of up to 73.26 lm / W, exceeding the requirements of Chengdu Airport 65 lm / W up to more than 10 percentage points.
Figure 4 Contents of the third-party test report of Jiuzhou Optoelectronic Round Embedded Downlight (Partial)