Three problems that should be paid attention to in the classroom lighting renovation project
Students are the flowers of the motherland, the classroom is a petri dish for students, care for students should start by improving their learning and growing environment. At present, China's primary and secondary school classroom lighting problems have attracted the attention of the Education Bureau and other departments and the community, but there are still most of the classroom lighting in less developed areas there is a lack of brightness, strobe, glare and other problems, causing some harm to students' eyes. However, with the relevant departments of the classroom lighting problems and classroom lighting standards promulgated, some provinces, autonomous regions, municipalities directly under the Central Government also began to primary and secondary school classrooms led lighting retrofit project, the following discussion, classroom lighting retrofit project should be how to solve the above three problems?
At present, the problems of China's primary and secondary school classroom lighting can be broadly divided into the following categories.
Insufficient luminosity of the lamps, resulting in a dark classroom environment.
Excessive luminance of lamps, causing glare through the reflection of the blackboard.
The quality of lamps and lanterns is not up to standard, resulting in frequent flashing and short service life, etc. The demand side and the engineering side should address these problems and renovate the classroom lighting project.
How to solve the above problems?
First, the problem of lamp strobe can be solved by choosing to meet the national standard light strobe ≤ 3.2% of the lamps and lanterns, it is recommended that the use of 100 percent lighting eye protection lamps comfortable no significant impact light strobe ≤ 1%. Secondly, the glare problem, the human eye normal attention to the line of sight range is 30 ° above the flat to 60 ° below, this range of blinding light is glare.
So anti-glare can be solved by the following ways.
First, choose lamps and lanterns with bat wing type light intensity distribution characteristics, generally have a large shading angle, good diffusion of light output, large cloth spacing, uniform illumination, can effectively limit glare and light curtain reflection.
Second, the use of low brightness, diffuse or semi-mirrored light cover (grid or grille) type lamps.
Third, the interior surface of the classroom should be light-colored decoration, preferably with non-glossy materials to reduce the impact of reflections.
Finally, if the brightness is not enough, school classrooms can use classroom eye protection LED lamps and lanterns for lighting energy-saving transformation, according to some school classrooms using eye protection lamps and lanterns 36w LED grille lights, than the previous use of 40W fluorescent lamps energy saving and brightness a lot, after the transformation of the classroom electricity consumption is greatly reduced, but the light illumination is doubled, into the show classroom, obviously feel the light translucent, soft and no Glare
In addition, as early as January 14, 2011, the national health department and the national standards department of the People's Republic of China revised the release of the national standard "primary and secondary school classroom lighting and lighting health standards" (GB7793-2010), on May 1, 2011 began to implement. The new standard revises the lighting standards for classroom desktops and blackboards, adding provisions for light sources, uniform glare values for classrooms, lighting power density and maintenance factors. Classroom lighting retrofit projects should be carried out in strict accordance with the regulations and standards.
According to a research study in China's first systematic study of visual health, "National Visual Health," the proportion of people over the age of 5 who are nearsighted ranges from 35.16% to 39.21%, which means that 1 in 3 people are nearsighted, and the total number of people suffering from myopia ranges from 437 million to 487 million. The classroom is the space where students spend the longest time apart from their families, we should all take the corresponding social responsibility to create a healthy and environmentally friendly learning environment for students through the classroom LED lighting retrofit project.