The main problems of urban lighting construction

In recent years, the city government attaches great importance to the urban landscape lighting, have invested a lot of money to build, the construction of urban lighting as an important measure to improve people's lives, beautify the urban environment. Especially as the window to show the image of the city, government leaders at all levels to pay particular attention to the planning and design of city landscape lighting, city lighting construction investment scale, construction standards, design level and other aspects of the increasingly high demand, the quality of lighting from the simple pursuit of "bright" gradually development to the pursuit of "beauty" and "elegance" stage. Although the technical level of China's urban lighting has been greatly improved, there are still some problems to be solved in the development, which mainly involve the following aspects. (1) the construction of city lighting system has not been established at present, the domestic large and medium-sized city after city lighting construction in recent years, more or less have a certain number of landscape lighting construction, but in retrospect feel the effect is not obvious, and it seems somewhat disorganized, the reason is the lack of deep thinking and good unity the city lighting planning or macro level. The overall level of urban lighting, first of all depends on an advanced and reasonable urban lighting planning. However, in the domestic various city landscape lighting construction, usually city streets, squares, etc. most of the building facade construction steps or spontaneous formation, lack of coordination, it is difficult to coordinate, it is difficult to form a whole individual beauty beauty, is also difficult to highlight the overall characteristics of the city. At present, from a national perspective, with the exception of a few large city, there are still many city work of city lighting planning lags behind or not on the agenda, or is not standardized planning, regional planning instead of the overall planning and design problems. Urban lighting leaders and policy makers because of the lack of expertise, resulting in unrealistic comparisons between cities". In addition to the city planning department of the night lights without restrictions, so some businesses from their own interests arbitrarily placed lamps, destruction of balance caused by the lack of visual adaptation, visual center and brightness levels, leading to the city's night out of order. Some competent departments and construction units to expand the scale of light construction, raise or lower standards, the lack of appropriate management and maintenance, resulting in a very short period of time after the completion of the overall effectiveness of lighting greatly reduced. In addition, design, construction, supervision, inspection and approval procedures are not strict qualification; city lighting planning and construction standards are not perfect; city public space and landscape lighting project after the completion of operation and maintenance duties and funds are not implemented; without a stable source of investment, which makes the reasonable cost, damaged lamps the timely replacement, good function and landscape lighting environment can not be guaranteed. (2) under the background of globalization, the problem of "urban characteristic crisis" has a long history. Obviously different geographical environment, different historical and cultural, different customs of the city, landscape lighting planning and design should also be different. There are many small and medium-sized city in landscape lighting, regardless of their characteristics and economic strength, blindly learning landscape lighting construction at home and abroad and other big city practices, one-sided pursuit of high-grade gorgeous, resulting in thousands of city side, the lack of content, it is difficult to form their own characteristics of the city. For example, Shanghai, Huaihailu Road, the first light tunnel, common in other big cities, people wonder whether it will be like the miniature landscape that year in other cities flooded Shenzhen. There is no darkness there is no light, bright in the dark on the basis of survival. However, China's urban lighting has entered a misunderstanding that the city or the building lighting the brighter the better, this is a false sense. Under this guidance, some city night lights everywhere leaping and flashing shows a flashy float dry atmosphere, and this situation intensified, the city often between brightness comparisons, resulting in the overall brightness is too high, the formation of light pollution. Where the light, brightness, how long to light, the affordability of consumption is much, according to the characteristics of the city planning and design. Dark and light to dark collocation, sometimes is also a kind of cultural taste. In a sense, at present to do is not how to light up the city, but to restructure the city of darkness. A place of landscape lighting effect, although very bright, but because of the overall brightness is too high and the lack of distinctive features, but cause light pollution. (3) the design is not in place due to the rapid development of the construction of Chinese landscape lighting in recent years, the emergence of a large company and city lighting related, but when has the task of building, but still the Department in charge of city lighting construction very difficult, how to select the design unit at. As everyone knows, the landscape lighting design is a combination of art and technology, obviously good effect from the good design, and good design from a good designer, which has become the key to the success of the construction of landscape lighting. Due to the landscape lighting in our country is not a long time, so from the industry as a whole, the level of design personnel is uneven, so it will inevitably lead to the deviation of the design effect. For example, Guangzhou waistline in lighting design on light pollution in different degrees. Landscape lighting effect is the ingenious combination of light and color, and color effect is controlled by the lamp. In promoting the use of energy-saving light source under the background of "often cast light lamps function J" heavy light source, light lamps tend to focus only on the selection, energy saving LED light source, but the lamp light distribution and heat treatment technical factors such as inadequate attention, resulting in luminous efficiency is low, the reality often become "pseudo energy". On the other hand, the garden lights and other landscape lamps and lanterns have a heavy light, light source. It is clear that the lamp is the link between the day and night landscape, the day can be decorated space, night lighting and night landscape provides the role, so its shape is very important. But the reality is that only focus on appearance design, often ignore the rationality of energy saving, heat dissipation, such as the use of the light source, and often to save costs, ignoring the lighting quality, LED lamps rough ugly, and there are many security risks, but not due to the landscape effect. (4) ignore the energy saving and environmental protection while people have been fully aware of the importance of energy conservation, the implementation of the new "city landscape lighting design standard" also proposed energy-saving lighting indicator lighting power density value (LPD) and the energy saving measures, but in practice, not on the energy-saving design and acceptance by enough attention, did not take effective measures to ensure the implementation of energy saving index. In addition, due to China finance system, city lighting throughout the construction of widespread heavy construction, light maintenance, and many energy-saving measures and facilities require additional spending in the city, policymakers do not pay much attention to such problems, these additional funds are difficult to obtain financial support by the government, this will inevitably lead to many new technologies and rapid popularization of such difficult application. Glare and light pollution in landscape lighting was a common phenomenon in the building, lighting can often be seen, because the floodlight projection angle of light is not lit properly, the top of the building, but to overflow into the air, which not only caused a waste of energy, but also affect the surrounding people's work, life and physical and mental health however, the impact of this has not yet attracted widespread attention from all walks of life. 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