How to choose the layout of eye protection lamps in classrooms to improve the lighting environment of classrooms
In the past, the classroom lighting environment generally only required to be bright enough and not easy to break. But now we are paying more and more attention to the lighting environment of the classroom. Poor lighting in the classroom will directly affect the vision health of teachers and students. Then how can we improve the lighting environment of the classroom? Let's understand it together now!
The selection and distribution of lighting fixtures in classrooms are also very important, but we will find that many classrooms just distribute the fixtures evenly indoors. As for the selection and quantity of fixtures, the location and height of the installation are estimated based on feelings. The six standards necessary for classroom lighting (illuminance, glare index, color rendering index, light stroboscopic index, color temperature, blue light hazard) must be accurately designed to meet the standards.
For classroom lighting, GBT 6876-2018 "Hygienic Requirements for the Design and Installation of General Classroom Lighting in Primary and Secondary Schools" puts forward specific requirements in the design of school classroom lighting and the selection of lamps. The classroom lighting must meet the following conditions:
1. The classroom desktop maintains an average illuminance ≥ 300lx, and the uniformity of illuminance ≥ 0.7.
2. The average illuminance of the blackboard surface is ≥500lx, and the uniformity of illuminance ≥0.8.
3. The classroom should use a light source with a color temperature of 3300-5500K, and the color rendering index of the light source is ≥80.
4. The uniform glare value of the classroom is ≤19, and the blue light hazard reaches the exemption level.
5. The current value of classroom lighting power density is <11W/㎡, and the target value should be 7W/㎡.
6. The installation method of hanging rod is adopted. The parallel distance between the lamp and the blackboard is d=700mm-1000mm, and the vertical distance from the upper edge of the blackboard is h=100mm-200mm. You can adjust the lighting control angle of the lamp to avoid direct glare of the blackboard lamp on the teacher.
After the classroom lighting is transformed, it must meet the national basic standard requirements. On this basis, through the design simulation of professionals, and the installation of professional construction personnel, it is ensured that the classroom lighting meets the standard of high-quality lighting environment of the classroom under the premise of meeting the basic requirements. .
