What kind of standard does the state stipulate that the lighting conditions of school classrooms reach?
As a necessary source of lighting for school classrooms, artificial light sources/lamps must meet the following standards;
1. Artificial lighting should be installed in all classrooms.
2. The average illuminance value maintained on the surface of classroom desks should not be less than 300Lx, and the uniformity of illuminance should not be less than 0.7.
3. The classroom blackboard should be equipped with local lighting, and its micro-scale average illuminance should not be less than 500Lx, and the illuminance uniformity should not be less than 0.8.
4. School classroom lighting should use light sources with a color temperature ranging from 2700K to 7000K, and the color rendering index should not be less than 80.
5. School classroom lighting should use thin tube lights less than 26mm.
6. Fluorescent lamps for classroom lighting should use energy-saving inductors.
7. Naked lights should not be used for school classroom lighting. The minimum hanging height of the lamps from the desk of the class should not be less than 1.7 meters. The purpose is to reduce the direct glare caused by the lighting.
8. The uniform glare value (UGR) of school classroom lighting should not be greater than 19.
9. Under the condition of maintaining an average illuminance value of 300Lx for school classroom lighting, the power density should not be greater than 11W/㎡, and the target value should be 9W/㎡.
10. When designing the illuminance of the school classroom lighting, the maintenance department effect is taken as 0.8.
Therefore, in order to effectively avoid the impact of school lighting on the eyesight of students, schools should adopt professional eye-protecting classroom lamps, and professional technicians should be responsible for the installation, so as to ensure that the various indicators of classroom lamps and blackboard lamps can meet the qualified requirements , To ensure that the light environment of each classroom not only has sufficient illuminance and excellent uniformity, but also minimizes glare, so that no direct light enters the eyes of students.
Light biological safety lighting, reasonable division of classroom lighting.
At the same time, adjust the position of the lighting fixtures in the classroom, try to avoid the superimposition of the light in the classroom and the lack of light in the blind corners, and truly provide students with a healthy, comfortable and green classroom light environment.
