Classroom lights do include blackboard lights in a broad sense
We often hear the design plan given in the lighting of campus classrooms: standardize classroom requirements to be equipped with 9 classroom lights and 3 blackboard lights. So the question is, is the blackboard lamp inconveniently a classroom lamp? What is the difference between classroom lights and blackboard lights?
Classroom lights do include blackboard lights in a broad sense, but in the design of campus lighting, classroom lights only refer to lamps that illuminate students’ desks and podiums, not including blackboard lights, because blackboard lighting requires another kind of lamps. Specializes in lighting.
The specification of classroom lights is different from that of blackboard lights
01
Illuminance
Classroom lamp illumination 300lx; blackboard lamp 500lx;
02
Evenness
The uniformity of classroom lights≥0.7; the uniformity of blackboard lights≥0.8;
03
Device method
The most common classroom lamp is the LED eye-protecting classroom lamp. The device should be arranged longitudinally (the long axis of the lamp is straight to the blackboard). The straight distance between the lamp and the desk is not less than 1.7 meters. The device of the classroom lamp is the reference desk height , The height of the table in primary and secondary schools is generally about 70cm, and the height of the table in kindergartens is generally about 50cm.
Led eye protection blackboard lamp device, the parallel distance between the blackboard is 0.7m to 1.0m, and the straight distance from the upper edge of the blackboard is 0.1m to 0.2m. The illumination angle of the blackboard lamp should be adjusted to prevent the blackboard lamp from direct glare to the teacher.
04
Lighting method
Classroom lighting should use special LED eye-protecting classroom lights with symmetrical strong light dispersion characteristics, because this will make the overall illuminance of the classroom brighter and more uniform, the light will be softer, and the visual effect will be better!
The blackboard lighting should use a special led eye-protecting blackboard lamp with asymmetrical strong light dispersion characteristics, because the blackboard lamp cannot be placed in the center of the blackboard, but can only be placed above the blackboard, and in order to ensure that the blackboard's illuminance and illumination uniformity are high, Therefore, only the LED eye-protecting blackboard lamp with asymmetrical strong light dispersion characteristics can be used, and the illuminance of the part of the blackboard that is close to the blackboard lamp and the part of the blackboard far away from the blackboard lamp are the same.
