Intelligent classroom lamp design theory, how to make the lighting effect better?
Generally speaking, ordinary classroom desks are arranged regularly. Therefore, the editor of Denghuiduo Design recommends the general lighting method of evenly distributing lights on the ceiling. In order to reduce the glare area and the reflection area of the light curtain, the fluorescent lamps should be arranged longitudinally, that is, the long axis of the lamps should be parallel to the main line of sight of the students and perpendicular to the blackboard. If the classroom lighting fixtures can be arranged above the channel of the vertical blackboard, so that the classroom table tops form the side or both sides of the light, and the lighting effect is better.
Classroom lighting design methods and parameters:
1. In order to ensure the uniformity of illuminance, the distance-to-height ratio (1/h) should be no greater than the maximum allowable distance-to-height ratio of the selected lamps. If the above conditions cannot be met, you can adjust the spacing z of the lamps and the hanging height h of the lamps, or add lamps, re-distribute the lamps or change the type of lamps to meet the requirements.
2. The height of lamps and lanterns has a certain influence on the lighting effect. When the lighting height increases, the illuminance decreases; when the hanging height decreases, the glare effect increases and the uniformity decreases. The height of lamps and lanterns in ordinary classrooms should be 2.5-2.9m from the ground, and 1.75-2.15m from the table top.
Lighting design of classroom podium and blackboard
Special lamps with asymmetric light intensity distribution characteristics should be used, and the protection angle of lamps on the student side should be greater than 40. , so that students do not feel direct glare. Blackboard lighting should not produce direct glare for teachers nor reflected glare for students. In the design, the hanging height of the lamps and the distance from the blackboard wall should be reasonably determined.
If only general lighting fixtures are set in the classroom, the vertical illumination on the blackboard will be very low and the uniformity will be poor. Therefore, special lamps and lanterns should be set up for the blackboard, and the lighting requirements are as follows:
1. It is recommended to use special lamps with asymmetric light intensity distribution characteristics. The protection angle of the lamps on the student side should be greater than 40 degrees, so that students do not feel direct glare.
2. The blackboard lighting should not produce direct glare for teachers, nor should it produce reflected glare for students. In the lighting design, the hanging height of the lamps and the distance from the blackboard wall should be reasonably determined.
The lighting principles of blackboard lighting design are as follows:
1. In order to avoid reflective glare for students, the lighting area of the blackboard lamps is as follows: the students in the first row look at the top of the blackboard, and reflect this line of sight to the ceiling to find the distance z of the image point, and connect point P with the top of the blackboard as a dotted line. Luminaires shall be arranged in the area above this connection dotted line.
2. When the teacher stands on the podium, it is not advisable to arrange lamps and lanterns within the 45° elevation angle of the horizontal line of sight, otherwise it will cause direct glare to the teacher.
