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Is Creating a Healthy Lighting Environment for Classroom Lighting Just Changing a Classroom Lamp?

Is Creating a Healthy Lighting Environment for Classroom Lighting Just Changing a Classroom Lamp?

2023-03-29

On August 30, 2018, the Ministry of Education and other eight departments jointly issued the "Implementation Plan for Comprehensive Prevention and Control of Myopia in Children and Adolescents", which clearly proposed two requirements for improving the visual environment of students. The first is to "implement lighting and lighting requirements for classrooms, dormitories, libraries (reading rooms), and use lighting equipment that is beneficial to visual health", and the second is to "achieve a 100% compliance rate of school classroom lighting hygiene standards.".

Encouraged by national policies, all sectors of society, especially the lighting industry, have taken active action, held intensive meetings to discuss, apply for patents, establish standards, and improve quality. They have been involved in the upsurge of classroom lighting renovation. In 2020 alone, they applied for 189 patents, drafted 9 professional standards, applied for and obtained 12 lighting environment certifications, and received 32 awards, all reaching a record high. Classroom health lighting is the field with the fastest development speed, the best quality improvement, and the highest market growth rate in the lighting field. It has set up a banner in the LED lighting market segment. So creating a healthy lighting environment for classroom lighting is just changing a classroom light? What aspects do we need to pay attention to?

Humans have evolved over millions of years in natural environments. Everything grows by the sun, and all living things on the earth must follow the rhythm of the earth's rotation, revolution, and changes in sunlight to control their growth. The sun is the best light source, and natural light is the most ideal light, the healthiest light, and the safest light.Natural light environment is the pursuit and effort direction of lighting people. We need to create a healthy light environment for school classrooms, dormitories, libraries, offices, etc.

The endogenous circadian rhythm and periodic rhythms of the week, month, season, and year are formed in humans under the periodic changes of natural light, which are called endogenous rhythms. Classroom natural lighting is a changing exogenous light rhythm, which activates genes in the body's endogenous rhythm and generates different endocrine hormones and neurotransmitters. Hormones and neurotransmitters are the leading substances that regulate various physiological, psychological, and metabolic processes in the human body. Therefore, using natural light in classrooms is not only a requirement of energy conservation and related building standards, but also a need for health. The natural lighting of classrooms should meet the requirements of GB 50033-2013 "Standard for Lighting Design of Buildings" and GB 50099-2011 "Code for Design of Primary and Secondary Schools". The ratio of classroom window area to classroom area should not be less than 1:5; The lighting coefficient of the classroom should not be lower than the lighting level III, that is, the natural lighting illumination on the side of the classroom should not be lower than 450 lux. Daytime artificial light sources are complementary to natural lighting, and their light quality and illuminance should be coordinated and matched with natural light as much as possible. Firstly, adjustable intelligent lighting systems are used to synchronize changes with natural light; The second is the spectral energy distribution or light color quality distribution of simulated natural light; Third, adjust and control artificial light to achieve a uniform lighting environment according to the changes in the natural lighting environment at different locations in the classroom.

The traditional lighting indicators "illuminance" and "illuminance uniformity" refer to the horizontal illuminance and uniformity on the desktop (working surface), which refers to the requirements for lighting technical parameters for sitting at a desk, reading, writing, or manual work. "Most of the time, students in school classrooms do not gaze down at the desktop, but rather forward or upward at the teacher and blackboard. Their eyes receive the reflected light from the surrounding walls, desktop, ceiling, ground, and the entire space in front of them, that is, the brightness of the space, not the illuminance, let alone the illuminance of the desktop. Therefore, the illuminance and illuminance uniformity indicators do not meet the actual needs of students for the classroom lighting environment.", It should be updated to the spatial brightness indicator, which is the exact light environment indicator.

As a health promoter of campus lighting, Huahui Lighting has been deeply involved in the lighting industry for 28 years, and is one of the first batch of units to meet the standards for high-quality lighting and lighting environment in classrooms in South China. It has been awarded the "Top Ten Educational Lighting Brands" in the lighting industry in China for four consecutive years from 2019 to 2022. It strictly controls issues such as color temperature, glare, blue light, and illuminance in classroom lighting transformation, to avoid harmful lighting effects on students' visual health. At the same time, the AIoT intelligent educational lighting overall solution independently developed by Huahui Education Lighting can affect students' visual task performance and visual comfort by setting a classroom lighting environment with a combination of direct lighting and indirect lighting with different color temperatures and illuminances, lighting on demand, and automatic light replenishment, making the overall classroom lighting environment full of vitality and vitality, which is deeply welcomed by students.

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