Specification of LED blackboard light
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The specifications of LED blackboard lights are different from classroom LED lights. Classroom blackboard lighting fixtures should be special classroom blackboard lighting fixtures with asymmetric and encrypted strong light everywhere. The LED blackboard lights should be installed parallel to the classroom blackboard, and the distance between the parallel planes. The classroom blackboard is between 0.4m and 1.0M, and the distance between the upper edge of the classroom blackboard is 0.1m to 0.1m. The viewing angle should be controlled according to the adjustment of the LED blackboard lamp to prevent the LED blackboard lamp from causing immediate glare to the teacher.
The height-to-width ratio of the classroom blackboard itself is generally between 1.0-1.1m, and the installation height-width ratio of the classroom blackboard is generally between 0.8m-0.8m for primary and secondary schools, and between 1.0m and 1.1m for junior high schools. Actually, it depends on the height standards of local students. Depends.
Why do classroom blackboard lighting fixtures choose LED blackboard lights with asymmetric encryption and strong light everywhere? It should be that the LED blackboard light cannot be placed on the right side of the classroom blackboard, only on the top of the classroom blackboard, and in order to better ensure that the light intensity of the classroom blackboard is high, so only choose the asymmetric encrypted strong light everywhere. The LED blackboard light controls the part of the classroom blackboard that irradiates the LED blackboard light and the part of the classroom blackboard that avoids the LED blackboard light to have the same light intensity.
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