The light intensity, LED color temperature and flash frequency of most classrooms do not meet the national standards
Classroom lighting should not only be "bright", but "standard", which is what Gu Lin insisted. "Classroom lighting has relevant national policies, such as the "Classroom Lighting and Lighting Hygiene Standards for Primary and Secondary Schools", but during the construction and acceptance of school buildings, classroom lighting does not have to be compelled to meet the standards like firefighting and sewage discharge. In fact, if the classroom lighting Failure to meet the standard will greatly affect the students' eyesight.
LED educational lamp manufacturers found that the classroom lighting environment is not up to standard mainly in the following points:
The illuminance and illuminance uniformity of the desk are generally lower than the national standard (national standard: the illuminance of the desk must be greater than 300 lux, and the illuminance uniformity is greater than 0.7). However, if students are in low illumination for a long time, and the illumination received by different desks in the same classroom is not uniform, some students will struggle to read, read and write, which will easily cause visual fatigue.
At the same time, a point that is often overlooked is that most classrooms use ordinary bracket lamps installed in front of the blackboard as blackboard lamps, and no special blackboard lamps are used, or even blackboard lighting is not arranged, resulting in the average blackboard illumination far lower than the national standard (national standard: blackboard illumination Greater than or equal to 500 lux, the uniformity is greater than 0.8), some students can't see the text on the blackboard, and they are prone to visual fatigue and myopia.
Most of the classrooms are directly installed with exposed fluorescent tubes. The light directly hits the students' eyes and produces glare, which distracts the students' attention, reduces the learning efficiency, causes visual fatigue, and induces myopia. In addition, fluorescent lamps are generally equipped with magnetic ballasts, which have serious optical stroboscopic effects. In order to adapt to frequency changes, students' visual systems will frequently adjust themselves, causing visual fatigue.
Too low color rendering index is also a common disadvantage of classroom lighting. Most classrooms use fluorescent lamps with a color rendering index of around 70 (national standard: the color rendering index of the light source should not be less than 80), resulting in color distortion, especially in art, chemistry, handcraft Such as professional classrooms, it affects the correct judgment of the color of the object, so that the object cannot truly present its color, and over time will cause vision problems such as color blindness and color weakness.
In addition, most classrooms generally use high color temperature (6500K) fluorescent tubes (national standard: classrooms should use 3300-5500K color temperature light sources), which has blue light hazards, blue light will cause irreversible damage to the retina, and vision is greatly threatened. High color temperature can easily cause students to be excited and easily fatigued because the light color is too white.
BENWEI LED Panel Light Co., Ltd. is a high-tech enterprise integrating scientific research, development, production, sales and service for specialized educational equipment manufacturing. The company is unswervingly based on scientific and technological innovation, concentrating on product technology research and development, focusing on product quality and honest service, and has gathered a group of outstanding talents in the field of professional technology to form a high-level and high-quality enterprise management team with young and middle-aged elites as the backbone. , administrative team, sales team, customer service team. In the continuous product development practice, we have accumulated rich experience in product design and profound theoretical knowledge.
