School classrooms with lamps and lanterns have any special requirements?
for the children eye not myopic, class don't fatigue, lighting lamps and lanterns choice school requirement is very high, about the classroom lighting it, as well as natural lighting to prevent glare, it helps children to do homework don't dazzle. Say commonly, intensity of illumination on the surface of the blackboard, such as for incandescent lighting, shall not be less than 150 lux. As for fluorescent lamps shall not be less than 300 lux. When the specific requirements? With hundred lighting a now look at!
about the lamps and lanterns with natural or artificial light desk surface illumination standard, the regulations are not consistent, in terms of natural light, the United States as the 300 lux, Britain and Japan as the 100 lux, the former Soviet union as the 75 lux. These standards may not accord with the actual situation of our country, this reactor psychology workers regular classroom of primary and secondary schools in the mid - to advance the natural light, incandescent lamp, fluorescent lamp, the desk surface illumination.
the experimental results show that:
( 1) No matter under the condition of natural or artificial light, the influence of different intensity of illumination of visual function is a significant difference. In terms of natural light, under the condition of 20 lux, visual fatigue is the most serious; Under the condition of 60 lux, had a significantly lower level of fatigue and the under 18 lux, fatigue degree is the lightest. Comprehensive national economic situation, the characteristics of school teaching in China as well as the factors to consider for the protection of eyesight, recommendations to 60 100 lux for ordinary classroom desks required illuminance below natural light of primary and secondary schools, 180 lux for optimal illumination.
( 2) Incandescent lamp and fluorescent lamp, under the condition of 20 lux, fatigue is more serious, but under the condition of 50 lux, xenon lamp bulb effect is better than that of fluorescent lamp; Under the 125 lux, both has good effect, suggested that the classroom artificial desks to the average illuminance, incandescent lamp at 60 - 70 lux, fluorescent lamp can be classified as 90 - 100 lux.
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