How to transform classroom lighting? How about pigeon sun classroom lights? Is the Ming pigeon sun classroom reliable?

How to transform classroom lighting? How about pigeon sun classroom lights? Is the Ming pigeon sun classroom reliable? The State Administration of Market Supervision and the State Standardization Administration Committee approved and issued the Hygienic Requirements for Lighting Design and Installation of Ordinary Classrooms in Primary and Secondary Schools (GB/T36876-20 18). In this new standard, the illuminance of desktop and blackboard surface and the sanitary requirements for the design and installation of ordinary classrooms in primary and secondary schools are specified in detail:

1. Suspended grid lamps shall be used, and the efficiency of lamps shall not be lower than 60%.

2. The uniform light value (UGR) should not be greater than 19, and the calculation method of uniform glare value (UGR) should be implemented according to CIE 1 17.

3. The suitable color temperature is 3300 K ~ 5300 K, and the color rendering index is not less than 80.

4. The classroom desktop should keep the average illuminance not less than 300lx, and the illuminance uniformity not less than 0.7; The surface of the blackboard shall be kept with an average illuminance of not less than 500lx and an illuminance uniformity of not less than 0.8.

5. The suspenders should be installed in the longitudinal direction of the classroom and evenly arranged (the long axis of the lamps is perpendicular to the blackboard). The lighting power density of the classroom should not be higher than 1 1W/㎡, and it should be lower than 9W/㎡ in areas where conditions permit. The vertical distance (g) between the lamp and the table shall not be less than 1700 mm.