What problems exist in the current situation of classroom lighting in our country?
For a long time, my country's school classroom lighting has been in a very backward state. There is no special lighting equipment suitable for classrooms in China, and most schools use simple fluorescent lamps. This problem has attracted great attention from the country and began to rectify. So what are the reasons for classroom lighting in schools in my country? Come on!
Nowadays, the number of students with myopia is increasing. What is the reason that affects the students' vision loss? There are many reasons for the students' vision loss, such as congenital factors, incorrect sitting posture, heavy study burden, watching TV or operating computers for too long, etc. Wait. However, experts believe that the direct cause of students' vision loss is the poor visual environment of the school, especially the primary and secondary school students whose eyesight is in the developmental period. Can your eyesight not decline due to unbearable light pollution?
What is the current situation of classroom visual lighting in our country? Most of the schools in our country have poor visual environment, and students study under low illumination for a long time; most classrooms do not have special blackboard lights, and students can easily cause visual fatigue when watching the blackboard. .
How can a visual environment with substandard illuminance, direct glare, stroboscopic effect, light shaking, and cold light color not harm the eyesight of students?!
In the notice, the Ministry of Education made the following regulations on the setting of classroom lighting:
1. Classroom lighting should be equipped with more than 9 40-watt fluorescent lamps, and the lamps should be perpendicular to the blackboard;
3. The blackboard lighting should be equipped with two horizontal 40-watt fluorescent lamps and lampshades;
4. The illuminance distribution of the desk and blackboard is uniform;
Then, to create a good classroom blackboard lighting, you need to do the following:
1. Vertical Illumination
The blackboard is the focus point of students' attention, it needs high vertical illumination, and it needs to meet the national standard value of ≥500lux.
2. Illumination uniformity
Since the blackboard is used as a key area for displaying knowledge, the more uniform the light distribution, the more comfortable the visual experience, and the uniformity of illumination is ≥0.8.
3. Glare
Reflected glare and direct glare are very common problems in blackboard lighting. In order to eliminate the effect of glare in blackboard lighting, the following three conditions need to be met. The blackboard lighting does not enter the students' eyes through the reflected light of the blackboard surface; the light source of the blackboard lighting does not directly enter the students' eyes; the teacher does not feel that the blackboard lighting is dazzling.
4. Reasonable lighting design;
In order to avoid problems such as reflected glare and direct glare, professional lighting design is required for the installation position and angle of the blackboard light. The following is the layout of the blackboard light.
5. Separate control switch
In order to facilitate the light of the blackboard to change according to different teaching environments, it is recommended that the blackboard lighting needs to be controlled separately.
6. High-quality blackboard lamps
In addition to meeting the above points, high-quality blackboard lamps play a pivotal role.
