The average illuminance value maintained on the classroom table should not be less than 300lx, and its illuminance uniformity should not be less than 0.7; The classroom blackboard should be provided with local lighting, and the average illumination value should be not less than 500lx, and the uniformity of illumination should be not less than 0.8.
2, no glare
The uniform glare value (URG) of the classroom should not be greater than 19. According to the data, the glare values of traditional T8 bracket fluorescent lamp and ordinary LED lamp without glare treatment are all above 20, which is easy to cause harsh eyes.
3. High color rendering index
The color rendering index of classroom lighting source should not be less than 80. According to the data, the color rendering index of traditional T8 bracket fluorescent lamp and ordinary LED lamp without glare treatment is around 70, which can't reach 80, but the color rendering index below 80 will distort the picture you see.
4. There is no danger of stroboscopic lighting.
Strobe has the most obvious effect on vision, which easily distracts students' attention and reduces the efficiency of learning. When the traditional T8 fluorescent lamp is started and the voltage is unstable, the stroboscopic phenomenon is particularly serious. When the current is stable, the frequency flash (fluctuation depth) is also above 40%, and the frequency flash of ordinary LED lamps is also above 20%. Studying in this environment for a long time is also easy to cause visual fatigue. The light strobe of professional LED educational lighting is less than or equal to 3.2%, which is much lower than the first two.
5, moderate color temperature
The classroom should use a light source with a color temperature of 3300 K-5500 K At present, the color temperature of professional LED educational lighting is mostly 5000K, which belongs to warm white light. However, many schools use traditional T8 fluorescent lamps and ordinary LED lamps, and their color temperatures are all above 6500K, which belongs to cold white light.
6, no blue light hazard
I believe everyone is familiar with the word "blue light". The most commonly used word in optical shops is "anti-blue light". Ordinary LED lamps are harmful if they are not treated against blue light. Professional education lighting LED lights have been professionally treated, reaching the exemption level, and there is no blue light hazard.
School lighting lamps and lanterns choose SOLUTION 1, lamp efficiency.
Lamp efficiency refers to the percentage of luminous flux emitted by the whole lamp to the luminous flux emitted by all light sources of the lamp. It is one of the important parameters to measure whether a lamp saves energy. The higher the efficiency of the lamp, the more effectively the lamp can use the luminous flux of the light source; On the contrary, the lower the efficiency, the more energy is wasted. Therefore, managers should pay attention to reasonable collocation when choosing, and reduce energy use while ensuring children's comfort.
2, the light distribution shape of lamps and lanterns
At present, the commonly used classroom lights are small grid lights and large grid lights, and the light distribution shape of small grid lights is cosine light distribution. The maximum light intensity of this lamp is basically under the lamp, and the surrounding light intensity is very low, and the luminous flux is concentrated in the lower part of the lamp. In order to achieve the higher illuminance uniformity required by the standard, the number of lamps can only be increased, otherwise the classroom will be flickering and the illuminance uniformity will be low. The light distribution shape of a lamp with a larger grid can be made into bat wings. These are all considered according to the specific situation of the classroom, and everyone should make a reasonable choice.
3. Glare quality grade of lamps and lanterns
The glare quality grade of lamps and lanterns is classified according to GBJ 133 "Lighting Design Standard for Civil Buildings" by using the test method of lamps and lanterns brightness limit curve. We tested the glare quality level of ordinary grid lamps used in classrooms. The number of test samples is: 5 large grid lamps and 3 small grid lamps/kloc-0. From the quantitative relationship, the glare quality grade of small grille lamps is generally better than that of large grille lamps. Generally, small grille lamps can reach Class A when the illumination is less than or equal to 500lx≤1000 LX; However, most large grille lamps only reach Grade A when the illumination is less than 300lx≤ and less than ≤500lx or even lower.
Top Ten Lighting Brands Opal Lighting NVC Philips Lighting Panasonic Foshan Lighting FSLTCL Lighting Sanxiong Aurora Pak Huayi Lighting Midea Home Sunshine Lighting School Lighting Design Scheme 1, Ordinary Classroom
Daylighting method: The desks in ordinary classrooms are regularly arranged, so it is more appropriate to use the general lighting method with uniform light distribution on the ceiling.
Lighting requirements: To ensure the uniformity of illumination, the aspect ratio (1/h) should not be greater than the maximum allowable aspect ratio of the selected lamps.
Design scheme: classroom lighting lamps should be arranged above the passage perpendicular to the blackboard, and the hanging height of lamps should be 2.5~2.9m from the ground and 1.75 ~ 2. 15m from the class desktop.
2. Blackboard
Lighting mode: the vertical illumination on the blackboard is very low and the uniformity is poor, so a special lamp is set under the blackboard for lighting.
Lighting requirements: The protection angle of students' side lamps should be greater than 40, and the hanging height of lamps and the distance from the blackboard wall should be reasonably determined.
Design scheme: The students in the first row look at the top of the blackboard, reflect this line of sight to the ceiling, and find out the distance z of the image point. Point p is connected to the top of the blackboard with a dotted line, and the lights are arranged in the area above the dotted line.
3. Staircase classroom
Lighting mode: lamps with good light limiting performance should be selected, and ceiling installation or embedded installation should be adopted.
Lighting requirements: the projection screen should be set separately from the blackboard, and the projection screen should be as far away from the blackboard lighting area as possible and have a certain inclination angle with the ground.
Design scheme: Considering the convenience of slide show and film show, indoor lighting should be controlled in the podium and the screening place. If conditions permit, dimming control can be realized for some or all ordinary lighting.
4. Library
Lighting requirements: besides meeting the illumination standard, the lighting design should also strive to improve the lighting quality, paying special attention to reducing glare and light curtain reflection.
Precautions: The selection, installation and arrangement of lamps and lighting equipment should pay attention to safety and fire prevention.
Design scheme: Important libraries should set up emergency lighting, among which emergency lighting, duty lighting and guard lighting should be regarded as a part of the total lighting and should be controlled separately. Some or all emergency lighting can also be used for duty or guard lighting.
5. Campus landscape
Lighting mode: LED lighting is adopted, with bright colors and rich shapes, which is also very energy-saving and environmentally friendly.
Design scheme: Set the lamp beside the building, let the light shine on the building surface, and make the outline more stereoscopic. In addition, setting lights with different colors beside plants can render the surrounding environment. More+.
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