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The results of the 2020 national myopia survey of children and adolescents released by the National Health Commission show that the overall myopia rate of children and adolescents in China is 52.7%, ranking first in the world, including 14.3% of 6-year-old children, 35.6% of primary school students, 71.1% of junior high school students and 80.5% of high school students.
Chen Hongtao, deputy to the Sichuan Provincial People's Congress, vice chairman of the Deyang Municipal Committee of the Chinese Revolutionary Committee and deputy director of the Deyang advanced manufacturing and innovation education center of China Science and technology, said: "there are certainly many causes of myopia. According to the investigation of the National Center for Disease Control and prevention, poor classroom lighting environment is one of the main causes of students' eyesight decline." In fact, China has formulated relevant regulations, which impose mandatory requirements on such technical indicators as the illuminance and illuminance uniformity on the desktop of the classroom, the average illuminance and illuminance uniformity on the blackboard surface of the classroom, the color temperature and display index of classroom lights, and the uniform glare index of the classroom.
The State Administration of market supervision and the State Standardization Administration approved and issued the hygienic requirements for lighting design and installation of ordinary classrooms in primary and secondary schools (GB / t36876-2018). In this new standard, the specific parameters of classroom lighting fixtures in primary and secondary schools, the overall illuminance of classrooms and the hygienic requirements for design and installation are specified in detail:
1. Hanging grid lamps should be used, and the efficiency of lamps should not be less than 60%.
2. The uniform light value (UGR) of the lamp should not be greater than 19, and the calculation method of the uniform glare value (UGR) should follow cie117.
3. The color temperature of lamps should be 3300K ~ 5500k, and the color rendering index should not be lower than 80.
4. The average illuminance of the classroom desktop shall not be lower than 300lx, and the illuminance uniformity shall not be lower than 0.7; The blackboard surface shall maintain an average illuminance of not less than 500lx and an illuminance uniformity of not less than 0.8.
5. The lamps and lanterns shall be installed by means of suspenders, and shall be evenly arranged in the longitudinal direction of the classroom (the long axis of the lamps and lanterns is perpendicular to the blackboard). The lighting power density of the classroom shall not be higher than 11W / ㎡, and should be lower than 9W / ㎡ in conditional areas. The vertical distance (g) between the lamp and the desk shall not be less than 1700mm.
6. When calculating illuminance in lighting design, the maintenance coefficient shall be 0.8.
Accelerate the transformation of classroom lighting, and primary and secondary schools should create a high-quality lighting environment for students. It is recommended that all primary and secondary schools and institutions (including: classroom lighting in public schools, classroom lighting in private schools, classroom lighting in private schools, classroom lighting in experimental schools, educational institutions), classroom lamp OEMs and licensors choose the "Huahui lighting" brand!
As a healthy promoter of campus lighting, Huahui lighting has been deeply involved in the lighting industry for 27 years. It is one of the first qualified units of high-quality lighting environment in classrooms in South China, and is also one of the "top ten education lighting brands" in China's lighting industry in 2021. It strictly controls the color temperature, glare, blue light, illuminance and other problems in education lighting, so as to avoid harmful lighting to students' visual health!
Huahui lighting has designed led eye protection classroom lights and led eye protection blackboard lights, which are specially used for classroom lighting. They meet the national standard. The average (constant) illumination of desks is more than 300lx, and the uniformity of illumination is 0.7; The blackboard maintains an average (constant) illuminance of 500lx and an illuminance uniformity of 0.8; The color rendering index is greater than 90, and the color reproducibility is high; Grid anti glare design, glare value less than 16, not dazzling; Color temperature is 5000K, comfortable and soft; The illumination of the whole classroom is uniform, without stroboscopic and blue light hazards.
The use of Huahui led eye protection classroom lights and led eye protection blackboard lights can be matched with the aiot intelligent education lighting overall solution of Huahui education lighting. Through the independent development of intelligent lighting products, the independent development of intelligent boxes (such as intelligent distribution boxes or intelligent air switches) can easily switch the lighting modes that meet the needs of teaching using intelligent full touch screen scene switches, remote controllers or mobile apps, so as to achieve constant illumination, one key scene control Curtain linkage, ultraviolet sterilization and other intelligent needs!
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