The discussion of school classroom lighting

Article summary:

This article introduces the current situation of school classroom lighting, sorts out the requirements of classroom lighting quality evaluation, focuses on the on-site inspection of classroom lighting environment, puts forward the concept and evaluation needs of classroom healthy lighting environment, and explores the school classroom lighting quality certification scheme.

The World Health Organization research report shows that the myopia rate of Chinese adolescents currently ranks first in the world, and myopia has become a serious problem that affects the health of the people. The investigation by relevant departments found that the poor classroom lighting environment is one of the main reasons for the decline of students’ eyesight. Therefore, it is self-evident to do a good job in the renovation of classroom lighting in primary and secondary schools to provide students with a standard lighting environment for learning and life. It is self-evident to protect the eyesight of students.
1. Status of school classroom lighting

As early as the 1980s, the Shanghai Lighting Research Institute had already started the research work of classroom lighting quality testing, from the initial blackboard illumination and uniformity, class desk illumination and uniformity, and then gradually increased, Nowadays, it is a relatively complete on-site inspection project of classroom lighting. As society pays more and more attention to youth vision protection, the concept of improving classroom lighting quality and requiring testing and verification has also been accepted by the public. At present, after some classroom lighting has been transformed, professionally qualified testing will be invited The institution conducts on-site testing and accepts the quality of classroom lighting renovation projects.

However, at present, there are many standards involved in the inspection and acceptance of classroom lighting quality, and the evaluation standards are inconsistent; the inspection of classroom lighting is only used as the basis for the renovation and acceptance of classroom lighting projects. Testing of individual classroom samples, the lighting conditions of most classrooms have not been tested; there are many large, middle, primary, and kindergarten classrooms that have never been tested for lighting quality, especially schools in economically underdeveloped areas. A research center conducted a sample survey on the light environment quality of nearly 200 elementary and middle school classrooms in the country two years ago, and the result showed that the pass rate was less than 10%.

Second, sort out the requirements for classroom lighting quality evaluation

How to get good classroom lighting quality, the testing and evaluation standards related to classroom lighting quality are: various building design codes, lighting testing standards and certification standards, classroom lighting testing standards and so on. In the face of various inspection and evaluation standards, we must sort out the requirements for classroom lighting quality evaluation, make the evaluation standards and indicators clear and intuitive, and improve the efficiency of classroom lighting quality inspection.

First of all, the lighting in the classroom can be completed by a qualified construction evaluation agency for architectural design review and engineering acceptance.

Secondly, the safety of lamps used in classroom lighting [1] quality can accept mandatory product certification certificates, lamp photometric tests [2] reports, blue light hazard tests [3] reports, lighting flicker tests [4] reports or voluntary product certification of lamp performance The certificate, the lamp manufacturer should promise that the quality of the lamp provided is consistent with the quality of the sample of the product certification type test and the inspection test.

Finally, focus on classroom lighting quality evaluation on classroom lighting environment on-site testing. The inspection project can collect various advanced indicators of classroom lighting environment quality standards, form classroom health lighting environment assessment indicators, and accurately assess classroom lighting environment quality level.

Classroom healthy lighting environment refers to the use of safe and healthy classroom lighting fixtures, so that the classroom lighting level can continue to meet the requirements of relevant standards. The specific parameters of the classroom lighting level include the class desk to maintain average illuminance and illuminance uniformity, the writing board to maintain average illuminance and illuminance uniformity, uniform glare value, lighting power density, color temperature and color rendering index [5] [6] and so on.

Third, explore the school classroom lighting quality certification program

The lighting environment is not ideal, which is one of the factors that affect the visual health and eye comfort of primary and middle school students. In particular, classroom reflections, glare, rainy days or dim winter light, etc., the educational lighting environment that does not meet the standard needs to be improved urgently, and the improvement of the classroom lighting environment has attracted the attention of all walks of life. Students ’parents are concerned about whether the classroom lighting environment is conducive to students’ visual health. Schools and competent departments hope to improve classroom lighting and obtain a certificate from a qualified certification testing agency. Specific requirements: to prove that each classroom in the school is in accordance with a healthy lighting environment Requirements; to prove that the improvement of classroom lighting quality can meet the requirements of healthy lighting environment for a long time.

If a full set of lighting testing is carried out for each classroom, the testing workload is large and the cost is high; if it is necessary to verify that the lighting quality of the classroom can meet the requirements for a long time, it is necessary to ensure the life and maintenance of the classroom lighting fixtures and follow-up testing. In order to meet the above requirements for compliance certification, an attempt was made to design a voluntary certification system to reduce testing samples and workload, improve testing efficiency, expand the coverage of certification, and reduce the cost of testing or certification.

Classroom health lighting environment voluntary certification plans to adopt the fifth international common certification scheme [7]: initial testing + inspection + post-certification supervision. Post-certification supervision includes: supervision and inspection + inspection. The following is a discussion on the control requirements and logic of the main links of classroom health lighting environment certification.

1. Series (certification unit) division

The samples of classroom lighting testing are classrooms. Generally, a school has several types of classrooms, and each type has several or dozens of classrooms. The area, length, width, and height of the same type of classroom are basically the same, and the interior walls and the top surface are the same. The coating and floor decoration are consistent, and the same writing board, video equipment, lighting fixtures, ceiling fans, cabinets, etc. are installed at the same location. If each type of classroom is summarized as a certification unit, a representative classroom in that type of classroom is selected for lighting inspection, and at the same time, the size, decoration, equipment and installation location of other classrooms are checked to confirm with the inspected classroom Consistent, then the test results of the classroom lighting drawn can represent the lighting test results of several other classrooms or dozens of classrooms of the same type. It is possible to cover the certification unit without performing lighting tests on each classroom of the same type Conformity evaluation of each classroom can greatly reduce the workload of testing.

2. Control of key parts

Lighting fixtures are critical to the quality of classroom lighting. Therefore, the purchase of lighting fixtures should provide at least a compulsory product certification certificate and a test report of parameters such as the photometric distribution of the lamp distribution, blue light hazard, and lighting flicker, or a voluntary certification certificate for classroom lighting products And, the lamp manufacturer should ensure that the quality of the lamp products provided is consistent with the quality of the samples of the certification type test and the inspection test. The model specifications, quantity and installation positions of various lighting fixtures installed in the same type of classroom should be completely the same.

3. Initial inspection

In order to prove that the classroom lighting conforms to the healthy lighting environment, collect advanced indicators of various classroom lighting environment quality standards, test the desk desktop to maintain average illuminance and illuminance uniformity, writing board to maintain average illuminance and illuminance uniformity, uniform glare value, lighting power density, On-site color temperature and color rendering index and other parameters, issued a compliance test report.

4. Initial inspection

Check the quality assurance ability of the classroom lighting engineering (installation) company, check the job responsibilities, training and qualifications of various personnel, check the design of the lighting plan, check the supplier evaluation of key components and purchase acceptance control documents and implementation records, check the classroom lighting Lamp installation, use and maintenance control requirements and implementation records, routine inspection regulations and inspection records after lamp installation, etc.

Go to the school site to inspect other classrooms covered by the same series (certification unit), check the configuration and installation locations of classroom lamps and other equipment, the consistency of interior decoration, check the firmness of lamps and ceiling fans, and perform compliance evaluation .

5. Issuing a certificate

The initial inspection is qualified, the initial inspection of the engineering (installation) company’s quality assurance ability meets the requirements, or the quality assurance ability meets the requirements after taking corrective measures for non-conformances. After the certification body reviews, the classroom health lighting environment voluntary certification is issued. Classroom logo Classroom health lighting environment certification mark, valid for five years.

6. Post-certification supervision

In order to prove that the quality of classroom lighting can meet the requirements of a healthy lighting environment for a long time, you can accept and adopt the test report of the reliability of the lamps (light maintenance life), but the more intuitive verification method is the use of certification supervision and inspection. The quality assurance ability of the witness shall be supervised and inspected. Check the maintenance and repair records of classroom lighting fixtures. If classroom lighting fixtures need to be repaired or replaced, lamps or parts of the same model specification must be replaced; check the classroom lighting self-examination (tracking inspection) records; go to the school site for classroom lighting supervision and inspection. In the school classrooms covered by the same kind of classroom health lighting environment certification certificate, according to the proportion of the certificate held by the certificate holder, the classroom lighting environment covered by the certification certificate is sampled to avoid repeated sampling of the same classroom sample for testing and evaluation.

7. Certificate validity period

After the classroom health lighting environment certification certificate is issued, the certificate holder or the school should do regular maintenance of the lamps and lanterns, if they are found to be abnormal or damaged, they should be repaired or replaced in time, and the reference point illumination tracking inspection should be done regularly to understand the classroom lighting environment status in real time. Once the supervision and inspection finds that the classroom lighting environment maintenance is not normal and the classroom lighting supervision and testing results do not meet the requirements of healthy lighting environment, the licensee should take corrective measures for rectification. If the rectification cannot be completed within the specified period, the certification body has the right to suspend or revoke For the certification certificate, the certificate holder shall be responsible for removing the certification mark of the classroom healthy lighting environment pasted in the school classroom.

Classroom health lighting environment certification certificate is valid for five years. If, according to the analysis of annual classroom lighting supervision and testing and follow-up inspection data, classroom lighting level attenuation is very small, the certificate holder can apply to extend the validity period of the certification certificate.

4. Responsibilities and benefits of all parties in classroom health lighting environment certification

The licensee must have the quality assurance capabilities specified in the implementation rules of the classroom healthy lighting environment certification, strictly implement the supplier evaluation and procurement acceptance system for key parts (lamps) to ensure the purchase of safe and high-quality lamps; according to the classroom space size and the light distribution of the lamps Light curve, design of lighting plan, accurate installation, strict implementation of routine inspection after lamp installation, regular follow-up inspection of reference point illuminance, timely replacement and maintenance of faulty lamps, to ensure that classroom lighting meets the classroom healthy lighting environment level during the validity period of the certification . The business of the licensee extends from the sale and installation of lighting fixtures to the long-term service of providing schools with a healthy lighting environment in the classroom.

The school should do a good job of maintaining the lighting fixtures, and report to the repair in time when a fault is found, and make a record of the maintenance and repair. Correct use of lighting fixtures to provide students with a healthy classroom lighting environment.

The certification body must strictly check the inspection and inspection, objectively evaluate the classroom lighting quality level of the certificate holder ’s construction and installation, and pass the on-site inspection of the certified classroom lighting, the certificate holder ’s quality assurance ability check and the follow-up supervision and inspection + inspection. The certificate issued a certificate of classroom health lighting environment certification, proving to the community that the classroom lighting installed for construction meets the requirements of classroom health lighting environment.