Landscape lighting is an important part of engineering lighting and one of the most concerned hot spots in the lighting industry. For landscape lighting projects, both the functionality and the ornamental nature should be considered. Aladdin reporters should make an exclusive interview with senior engineers He Bingyun, executive director and secretary general of Tianjin Lighting Society, who has been paying attention to the landscape lighting project for the specific points of attention of landscape lighting projects.
Night lighting assessment
Tianjin Zhongshan Gate Overpass
Reporter: How to assess the pros and cons of a landscape lighting project? What are the specific criteria?
He Bingyun High-tech (hereinafter referred to as He Gong): Last year, several experts from the Tianjin Lighting Society and the Municipal Committee of the City, including me, wrote a “Tianjin Urban Landscape Lighting Project Acceptance Specificationâ€, which was made for the acceptance of urban landscape lighting projects. Some aspects of the regulations are now being tested. I think that for urban landscape lighting, there should be two attributes: one is functional and the other is ornamental. For ornamentals, it is a distinctive feature of urban landscape lighting that distinguishes it from other lighting.
In the country's total multi-assessment norms and acceptance specifications, it emphasizes the aspect of engineering "electrical engineering construction quality". As the acceptance standard for landscape lighting projects, on the basis of meeting the "electricity" standard, the acceptance of the landscape effect of the project should be added, that is, the evaluation criteria for ornamental and artistic aspects should be increased. Specifically, it includes the safety of the project, the beautification function, the function of use, the health of the human body, energy conservation and environmental protection, environmental benefits, and public interest. It is necessary to evaluate the quality of electrical engineering construction, evaluate the artistic effects and visual effects of landscape lighting, evaluate lighting energy-saving indicators, and evaluate light pollution control.
Light pollution problem has a generation of strengthening constraints
Tianjin aerial view
Reporter: Since light pollution is one of the standards for engineering assessment, is the light pollution in China's big cities serious? What are the reasons for the light pollution in China?
He Gong: Light pollution is the phenomenon of interference or negative impact on people, things and the environment caused by spilled light, reflected light and glare generated by urban outdoor lighting at night. From the aerial image analysis, there are obvious bright and dark areas. Generally, the areas with more developed economy are brighter, and the situation of light pollution is relatively serious. The southeast coast of China is also relatively bright. In recent years, with the rapid development of urban night lighting, especially the high-power high-intensity discharge lamps widely used in architectural night lighting and road lighting, light pollution has become more and more serious. In addition, the neon lights, light box advertisements and light signs on the commercial street are increasing and larger. There are two main reasons: First, the use of the unit's thinking, think that the brighter the better, the building you build is brighter, I want to be brighter than yours; the second is to design the construction unit's economic interests, thus accelerating the development of light pollution .
In addition, due to the unscientific installation technology, the problem of glare caused by indoor space and road drivers is also a problem worthy of attention.
Reporter: Is there a corresponding regulation that restricts light pollution?
He Gong: For light pollution, the country does not yet have a specific regulatory constraint. However, due to the seriousness of the light pollution problem, the relevant state departments and industry insiders attach great importance to this issue, and now the agenda has been mentioned. Internationally, some countries also have restrictions on the light pollution index. We can refer to the implementation, but it is only a control indicator and should be regulated as a regulation. The Ministry of Construction recently issued documents, such as pointing out that it is not a landmark building, it is absolutely not allowed to use lasers, and it is not allowed to use large wattage lights.
Lighting characteristics of Tianjin Jingang Bridge
Tianjin Jingang Bridge
Reporter: In the construction of Shuicheng, the bridge lighting is indispensable. Please analyze the Tianjin Jingang Bridge night lighting project?
He Gong: Jin Gangqiao uses fiber optic lighting, which was built earlier. The original Jingang Bridge was the old bridge. After the demolition, a new bridge was rebuilt. Old Bridge made a model in the pavilion. The new bridge, the lines, structure, and shape are quite beautiful. The color of the bridge itself is orange, and the lighting effect is very good. Like a ribbon, the frame is on the banks of the river.
As a bridge lighting, I feel that we must emphasize the function of the bridge - the passage. The car is good, people are good, the most important thing is to focus on function, supplemented by landscape appreciation. Because so many people flow on the bridge, if they do not follow the real road lighting standards, it will cause glare to pedestrians and vehicle drivers, which will easily lead to safety accidents. Lights can be arranged according to the structure, shape and material of the bridge. For example, dotted bridge piers, forming reflections, is more beautiful. But overall attention should be paid to the glare and light pollution of the bridge deck, which is the most important issue of bridge lighting.
He Bingyun's personal profile:
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Unit title and title: Executive Director and Deputy Secretary General of Tianjin Lighting Society
Professional expertise: Lighting engineering, Chinese language and literature
Academic position: Executive Director and Deputy Secretary General of Tianjin Lighting Society
Other social part-time jobs: Member of the Outdoor Lighting Professional Committee of the China Lighting Society
Director and Deputy Secretary General of Tianjin Lighting Association
Tianjin Municipal Government Procurement Experts Judge
Tianjin International Tendering Co., Ltd. expert judge
Major scientific research projects, scientific research achievements and awards:
He is currently the executive director and deputy secretary-general of the 7th Council of Tianjin Lighting Society, and a senior engineer. Has been engaged in the full-time cadre work of the Tianjin Lighting Society since 1987
I love the lighting technology industry, I am enthusiastic about the work of science and technology groups, and actively serve the majority of science and technology workers. Has long been engaged in academic exchanges, technical consulting services, planning and argumentation, lighting project management and other work.
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In addition to energy saving, green lighting also emphasizes lighting quality.
Reporter: In addition, green lighting is also a must for landscape lighting. In addition to promoting energy-saving lamps, green lighting also pays attention to what aspects?
Hegong: Green lighting is a high-efficiency, economical and comfortable modern lighting system. It refers to the use of scientific design, high-efficiency, long-life, safe and stable lighting electrical products, including: electric light source, lamp electrical accessories , lamps, wiring equipment, and dimming control equipment and light control devices to achieve high efficiency, comfort, safety, economy, environmental protection and improve the conditions and quality of people's work, study, and life, and to benefit people's physical and mental health and reflect modern civilization. Lighting system.
I understand that the "green" of green lighting means environmental protection and energy conservation. Green lighting was first proposed by the US Environmental Protection Agency. It is intended to control the development of the power industry from the user side, reduce carbon dioxide emissions, and achieve the goal of reducing the greenhouse effect. Internationally, they have responded. For green lighting, China has also set up a green lighting engineering office. The purpose of green lighting is to improve the quality of lighting, save resources, and protect the ecological environment, so as to obtain significant economic benefits and environmental benefits. It is not only about saving energy, but also about improving the quality of lighting. To provide a good space environment, a good lighting environment. There are two main meanings: one is to save energy, reduce power consumption, and reduce the emission of harmful gases of carbon dioxide. In addition, it is necessary to promote energy-efficient lighting sources to improve people's lives, improve work efficiency, and protect people. Physical and mental health.
There are certain difficulties in the wide application of LED
Reporter: When it comes to promoting energy conservation, your column says "Promoting LEDs will help promote green lighting." But now the application of LED is still not wide enough. What difficulties do you think have been widely used in LED?
He Gong: LED is a light source of semiconductor and solid light. It is an energy-saving light source with many advantages and no mercury hazard. However, it is used less in lighting, and is generally used in the background of mobile phones, car lights, traffic lights and other fields. This is due to its characteristics, that is, it does not emit light itself, but it is made by the brightness to make people see it. As many experts believe that LED applications are quite well decorated at close range, but there are still some difficulties in applying landscape lighting. The acquisition of white light has opened the way for lighting, and white LED will become the mainstream product of next-generation lighting. High brightness, large wattage LED development, speed is also relatively fast. On the Guangfo Expressway, LED street lights are used for live demonstrations compared with traditional high-pressure sodium lamps. The effect of LED street lights is not so ideal. The human eye is not suitable for light color. In addition, LEDs also have problems with packaging, heat dissipation, etc., and it is also expensive to build, etc., which currently limits the widespread use of LEDs.
Tianjin night lighting features
Tianjin Haihe Night Scene
Reporter: For Tianjin night lighting planning, what do you think is worth learning from other cities?
He Gong: The night scene in Tianjin is divided into several stages: from nothing to nothing, from small to large, from bright to beautiful, from vulgar to elegant, from engineering practice to theoretical research. Tianjin landscape lighting planning should be based on Tianjin's urban positioning, lighting should have characteristics. Tianjin is a part of the North China Plain, which is surrounded by the Bohai Bay region. It has a natural environment of land and water, and has a historical environment of economic development. The building has a blend of Chinese and Western styles and a blend of north and south. The mother river, Haihe, is the symbol of Tianjin. The planning and construction of Tianjin night lighting is mainly based on the Haihe River as the main carrier, and the water is turned around the city. The light is bright and dark. Only when there is light, there is a shadow, light and shadow are combined, and the contrast between light and shadow is used to create a harmonious light environment. If it is lit, it is equal to no light. This is a better aspect. However, the economy of Tianjin is still relatively backward compared with other big cities. Sometimes there are good plans, but some funds are not in place and the desired results are not achieved. One of the less desirable aspects is that Tianjin does not yet have a symbolic building. As such, it is related to the overall planning of the city. We are working hard to build the main line around the river. I believe that the night landscape in Tianjin will become more and more beautiful.
Tianjin Haihe Night Scene
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