The importance of office lighting For most people, one third of the day is spent in the office. We are busy working on computers, writing documents, reading materials, making phone calls, discussing work with colleagues, and even the author’s small article is in the office. Completed... These activities have their own visual requirements, so it is necessary to carry out the corresponding lighting design.
Moreover, factors that are critical to improving office productivity, such as staff health, interest and enthusiasm, are influenced to a large extent by the office environment, and it is clear that lighting workers should carefully design for office work. The staff creates a bright and comfortable light environment.
Lighting classification
Office lighting is generally divided into direct lighting and semi-indirect lighting.
Direct lighting: means that the luminaire is installed above the working surface. Most of the light (100-90%) is directly irradiated from above, and evenly covers the horizontal areas such as our work surface, conference table and floor. It is an economical one. The way of lighting is also the way most of the office lighting is currently used. (See Figure a)
Semi-indirect lighting: refers to a part of the light (10-40%) of the lamp is illuminated to the ceiling, illuminating the ceiling, making the whole space appear bright and has a certain decorative function. (See Figure b)
l Direct lighting:
First look at the office with a ceiling, which is also the most common at present, taking a high-rise office building as an example.
Let's take a unit in the office for calculation. Size: length 13m × width 8m × height 2.8m
Lighting recommendation 1: 3×14W T5 fluorescent grille light panel
1, color temperature: 4000K
2, the center distance of the lamp: 2.4 × 2.4 meters
3. Arrangement direction: The light sources are arranged in parallel along the window. This is done to reduce glare, use natural light, and facilitate control.
DIALux is used for simulation calculation: the average illuminance of the desktop is 379 lx, and the power density is 8.58 W/m2, which meets the requirements of the national standard “Architectural Lighting Design Standard GB50034-2013†​​(300 lx, 9 W/m2).
Some children's shoes said that the same space as above, with 2 × 28W T5 grille lamp, what should I do? Ok, then let's look down.
Lighting Recommendation 2: 2×28W T5 Fluorescent Grille Light Panel
1, color temperature: 4000K
2, the center distance of the lamp: 3 × 3 meters or so
3. Arrangement direction: the light sources are arranged in parallel along the window
Calculation results: The average illuminance of the desktop is 311 lx, and the power density is 7 W/m2, which meets the requirements of the national standard.
There are also children's shoes to ask, now the use of LED lights, how to design? Let's take the same space as above.
Lighting recommendation three: 3 × 9W LED T8 grille light panel (the whole light flux is about 2200 lm).
1, color temperature: 4000K
2, the center distance of the lamp: 2.4 × 2.4 meters
3. Arrangement direction: the light sources are arranged in parallel along the window
Calculation results: The average illuminance of the desktop is 312 lx, and the power density is 5 W/m2, which meets the requirements of the national standard.
Lighting recommendation four: 2 × 18W LED T8 grille light panel (the whole light flux is about 3000lm).
1, color temperature: 4000K
2, the center distance of the lamp: 3 (long axis direction of the lamp) × 2.4 meters
3. Arrangement direction: the light sources are arranged in parallel along the window
Calculation results: The average illuminance and power density of the desktop meet the requirements of the national standard, and they are not shown here.
Of course, if you want to make the whole space appear more concise and modern, you can also use LED panel lights. as follows:
Lighting Recommendation 5: 32~36W LED panel light (full light flux 2700~3000 lm).
1, color temperature: 4000K
2, the center of the lamp spacing: 2.4 × 2.4 meters (square lamps) ~ 3 × 2.4 (rectangular lamps) around the meter
3. Arrangement direction: the long axis of the lamps is arranged in parallel along the window.
Calculation results: The average illuminance and power density of the desktop meet the requirements of the national standard.
Oh, there are children's shoes raising their hands to ask questions. What you just said is the office with a ceiling. If there is no swelling, what should I do?
Fortunately, this savvy factory has long thought of it, as long as the structure of the lamps mentioned before is slightly modified, it is better to change to hoisting (hanging rods, hanging lines, etc.), the arrangement spacing is almost the same, like this:
Suspension height: preferably about 2 meters from the table top.
After talking about direct lighting, let's talk about semi-indirect lighting.
2 Semi-indirect lighting:
This method is less used domestically and is generally used in high-end offices. It requires a higher floor height, generally more than 3 meters. Or take the above office as an example, the floor height is set to 3.6 meters, and the hanging height of the lamp is about 2.5 meters from the ground.
Lighting recommendations: 2 × 28W T5 semi-indirect fluorescent grille light panel (of course, LED light panels can also be used, but I have not found such lamps yet).
1, color temperature: 4000K
2, the center distance of the lamp: 3 × 3 meters or so
3. Arrangement direction: the light sources are arranged in parallel along the window
Calculation results: The average illuminance of the desktop is 354 lx, and the power density is 7 W/m2, which meets the national standard requirements (300 lx, 9 W/m2).
Ok, ordinary office lighting is here.
Enter the free question link below:
Children's shoes: Why are the color temperatures of the lamps in your case 4000K?
A: It is based on the requirements of the national standard to reduce the blue light hazard and protect the eyes.
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