How much illumination is appropriate? Table lamp is one of the common lighting lamps now, which is usually found in study and bedroom. Different places need different lighting. First, find out how appropriate the lighting illumination is and related information.
The illumination intensity is more or less suitable for 1 1, which conforms to the illumination standard promulgated by the state and ensures that every indoor space has appropriate illumination. For example, the living room (living room), where guests are received and family gatherings are held, should take into account the needs of work and study, and the illumination is slightly higher; Dining in the restaurant should prevent accidents and have high illumination; And the bedroom illumination should be low, which is convenient for the owner to rest.
2. Try to use lighting methods, lamps and colors to create an environmental atmosphere and improve the sense of space. For example, a variety of projection lamps can be used to produce strong and concentrated brightness contrast, which will make the indoor space lively; Using the diffuse light and soft light color mainly reflected by the light trough, a quiet, relaxed and cordial harmonious atmosphere is formed indoors; The use of classical lamps adds a gorgeous and elegant atmosphere to the environment; Using simple lamps can create a simple and peaceful atmosphere; Using warm light sources with low color temperature in cold areas and cold light sources with high color temperature in hot areas can make indoor light harmonious and full of warmth. Lighting can also make people feel different about space. Generally speaking, rooms with high illumination and high brightness feel larger, while rooms with low illumination and dark feel smaller. When diffuse light is used as the whole illumination of the space, the space will expand and people will feel happy.
3. Avoid discomfort such as glare caused by direct contact with strong light, and avoid shadows caused by lighting. Although light and shadow can create a sense of beauty, improper handling can also cause strange light, form an illusion and cause accidents.
4. Ensure economy and safety. Energy saving and emission reduction is an important measure for human beings to protect the earth and take the road of sustainable development. Indoor lighting design must consider the requirements of energy saving and emission reduction, and choose lighting lamps with high light efficiency, low power consumption and long life. Incandescent lamps should be avoided in future residential lighting, because incandescent lamps consume a lot of electricity and have a short life.
5, in the lighting design and construction, lighting lamps and wiring layout must be absolutely safe, especially for the elderly, children's rooms, sockets and switches should be installed in inaccessible places. The lights in the kitchen should be protected and the bathroom should be moisture-proof.
What is the illumination of the lamp? 2. What are the illumination requirements for office lights?
Illumination requirements of office lamps: According to the national standard "Building Lighting Design Standard" GB 50034—2004, the illumination of ordinary office is 300 lx, and that of high-grade office is 500 lx. At the time of design, the design power density of high-grade office lighting is 15W~ 18W/ m2, and that of ordinary office lighting is 9w ~1/w/m2.
People's Republic of China (PRC)'s national standard "Building Lighting Design Standard" (GB 50034-20 13) stipulates the general illumination standard value of newly built, rebuilt and expanded residential, public and industrial buildings. The specific illuminance is as follows:
When one or more of the following conditions are met, the illuminance of the working face or datum plane can be increased by one level according to the standard value of the degree.
1, in a fine workplace with high visual requirements, when the distance from the eyes to the recognition object is greater than 5 (X) nun;
2. Long-term high-intensity visual work has adverse effects on visual organs;
3. When it is difficult to identify a moving object due to short identification time;
4. When visual work has an important impact on operational safety;
5. When the brightness contrast of the recognition object is less than 0.3;
6. When the operation accuracy is very high, the error will cause great losses;
7. When the visual ability is lower than the normal ability;
8. When the building grade and functional requirements are high.
When one or more of the following conditions are met, the illuminance of the working face or datum plane can be reduced by one level according to the standard value of the degree.
1, when working hours are short;
2. When the accuracy or speed of operation is irrelevant;
3. When the building level and functional requirements are low.
Generally, compared with the standard illuminance value, the design illuminance value may have a deviation of-10%-+ 10%.
Extended data
computing formula
Average illuminance (Eav) = total luminous flux of light source (n * Ф) * utilization coefficient (CU)* maintenance coefficient (MF)/ area (㎡).
(Suitable for indoor or stadium lighting calculation)
Utilization coefficient: indoor 0.4, exercise 0.3.
Maintenance coefficient: generally 0.7 ~ 0.8.
Example 1:
Indoor lighting: 4× 5m room, 9 sets of 3×36W grid lights.
Average illuminance = total luminous flux of light source ×CU×MF/ area = (2500× 3× 9 )× 0.4× 0.8 ÷ 4 ÷ 5 =1080lux.
Conclusion: The average illumination is above 1000Lux.
Example 2: Gymnasium lighting: 20× 40m stadium, using 60 sets of powerspot 1000 w metal halide lamps.
Average illuminance = total luminous flux of light source ×CU×MF/ area = (105000× 60) × 0.3× 0.8 ÷ 20 ÷ 40 =1890lux.
Conclusion: The average horizontal illumination is above 1500 Lux.
Design case of office average illuminance;
Design conditions: office length 18.2m, width 10.8m, ceiling height 2.8m, desktop height 0.85m, utilization coefficient 0.4, maintenance coefficient 0.8, and number of lamps and lanterns 33 sets. What is the average illumination in the office?
Lighting scheme: DiNiT 2X55W anti-glare fluorescent lamp is adopted, with luminous flux of 3000Lm and color temperature of 3000K, and the color rendering is above Ra90.
According to the formula, Eav = (33 sets of x6000lm x 0.4x0.8) ÷ (18.2mx10.8).
= 1 10880.00 ÷ 196.56 ㎡
= 564. 10Lux
Remarks: Lighting design must require accurate utilization coefficient, otherwise there will be great deviation, which will affect the utilization coefficient. There are mainly the following factors: light distribution curve of lamps, light output ratio of lamps, indoor reflectivity, such as ceiling, wall, desk and so on. And indoor index.
3 workshop lighting brightness standard How much brightness is appropriate:
Chapter 5 of Building Lighting Design Standard -GB50034-2004 stipulates "lighting standard value", and the corresponding workshop illumination standards are as follows.
1. The illumination standard for ultra-precision operation, design, drawing and precision inspection is 3000~ 1500.
2. Lighting standard for design room, analysis, installation and painting is 1500~750.
3, packaging, measurement, surface treatment, warehouse office illumination standard is 750~300.
4. The lighting standard of dyeing, casting and electrical room is 300~ 150.
5. The illumination standard of entrances and exits, corridors, aisles, stairs, dressing rooms, toilets and warehouses attached to the workshop is 150~75.
6, fire exits, warehouses, outdoor power equipment (loading and unloading, inventory movement) illumination standard is 75~30.
The following principles should be followed when choosing enterprise lighting lamps:
1, convenient maintenance and safe use should be considered.
2. Dust-proof, waterproof or led explosion-proof lights should be used in workshops with explosive gas or dust. The control switch should not be installed in the same place. When it needs to be installed in the same place, the explosion-proof switch should be used.
3, damp indoor and outdoor places, should choose closed lamps with crystal water outlet or open lamps with waterproof mouth. 4. Floodlights should be used in hot and dusty places.
5. Sealed lamps should be used in the room with corrosive gas and special humidity. All parts of lamps should be treated with anti-corrosion, and the switchgear should be protected.
6, indoor dust, according to the dust emission and its nature, fully enclosed lamps and lanterns should be adopted.
7. Lamps and lanterns may be damaged by machinery in the workshop, so lamps and lanterns with protective nets should be adopted; In vibration places (such as places where wind chimes, air compressors and bridge cranes are forged), lamps with shock-proof devices should be used.
8. Bakelite lamp holders shall not be used for sealed lamps and bulbs larger than 150 watts, but porcelain lamp holders shall be used.