What are the installation standards for classroom blackboard lights?
The blackboard is an indispensable teaching tool in the campus. Now with the development of society, the original blackboard has been basically eliminated in the school, and the use of multimedia lighting blackboards is advocated. So what are the installation standards for classroom blackboard lights? Next, our small Let me introduce to you.
The vertical illuminance of the blackboard lighting should not be lower than the average horizontal illuminance value of the classroom, and should not be lower than 1.5 times the average horizontal illuminance value of the classroom. The illuminance on the blackboard should not be less than 500, and the uniformity of the illuminance on the blackboard should not be less than 0.7. A power distribution box with a certain capacity can be set up on one side of the blackboard for classroom lighting and power sockets for strong and weak current equipment. The blackboard light lighting switch should be set separately. Students have a low viewing angle when looking at the blackboard. The blackboard lighting should not produce reflected glare and direct glare for students. Teachers should not be affected by the direct glare of the blackboard lights when writing on the blackboard or facing students.
Therefore, the blackboard lamp should be a special lamp with asymmetric light intensity that projects light toward the blackboard, or a fluorescent lamp with good shading can be used, and it should be set at an elevation angle of 45 degrees above the teacher's horizontal line of sight. Blackboard lighting has a great impact on students' eyesight. When designing blackboard lights, the main light position is selected to prevent the reflection of the light curtain. The installation position of the blackboard light should determine the distance between the blackboard light and the blackboard according to the installation height of the lamp. The elevation angle formed by the horizontal line of the center of the blackboard and the line connecting the center and the light source is around 55 degrees, and the vertical illuminance value is the highest.
The above are some small knowledge we provide you, I hope to help you, if you want to know more about campus facilities, you can log in to our BENWEI lighting official website to consult us, more knowledge can be found in our website.
