Lighting industry knowledge to explain the book

1. lighting introduction:

As an indispensable object of modern home lighting, different light sources can create different atmospheres. Different lighting sources have their own advantages and disadvantages, and they are also suitable for use in different space occasions.

1. Luminous flux

The total amount of light emitted by the light source per unit time, generally the greater the power, the higher the luminous efficiency and the higher the luminous flux.

2. Color temperature

When the color of the light emitted by the light source is the same as the color radiated by the black body at a certain temperature, the temperature of the black body is called the color temperature of the light source.

3. Color rendering

The average life of the light source to the real color of the object, a batch of light sources are lit at the same time, when 50% of the light sources fail, it is the average life of this batch of light sources.

4. Light efficiency

Different light sources consume the same amount of electricity and emit light at the same time. The light source with high luminous efficiency is definitely more energy-saving than the light source with low luminous efficiency.

5. Strobe

The number of times the light source flashes per second, the higher the strobe, the greater the adverse effect on vision.

2. lighting light source classification:

1. Incandescent lamp

The biggest disadvantage of incandescent lamps is that they have a short life span, and the use time is generally between 3000 and 4000 hours, and some poor quality incandescent lamps can only be used for 1500 hours. Incandescent lamps in the home are often used in dining rooms, bedrooms and other spaces, and the color looks more comfortable.

2. Halogen tungsten lamp

Metal halide lamp is actually a kind of incandescent lamp, life is generally between 3000 to 4000 hours, not more than 6000 hours. This kind of lamp can be used for accent lighting, for example, in order to highlight the decorative paintings on the wall, indoor ornaments, etc., it can be illuminated with cold light cup. The white light of the lamp can be changed according to different home decoration styles, which is consistent with fashion.

3. Fluorescent lamp

Energy saving, about 60% of the electric energy consumed by fluorescent lamps can be converted into ultraviolet light, and other energy is converted into heat energy. Generally, the conversion efficiency of ultraviolet light to visible light is about 40%. Therefore, the efficiency of the fluorescent lamp is about 60% × 40% = 24%-about twice that of the same power tungsten filament lamp.

4. Energy-saving lamps

Energy-saving lamps are popular for saving energy. A 9-watt energy-saving lamp is equivalent to a 40-watt incandescent lamp. The life of energy-saving lamps is also relatively long, generally 8000 to 10000 hours. After the normal use of energy-saving lamps for a period of time, the lamp will dim, mainly because of the loss of fluorescent powder, which is technically called light decay. Some high-quality energy-saving lamps have invented constant brightness technology, which can keep the lamp in the best working condition for a long time. After 2000 hours of use, the light decay is less than 10%.

5. LED lights

This kind of lamp is called light-emitting diode, which is a new technology. The white LED lights on the market are better in performance, but the current LED lights still need to be improved technically.

types of 3. household light bulb:

1. Metal halide lamp

The color rendering index of metal halide lamp is above 80, the light efficiency is above 75 lumens/watt, and the color temperature is 6000K. The advantages are long life, high luminous efficiency, good color rendering, and obvious power saving effect. It is the fourth generation light source in the world today.

2. High pressure sodium lamp

The luminous efficiency is 90~100 lumens/watt, which is 2 times and 7 times higher than that of mercury lamp and incandescent lamp respectively. The color rendering index is 60, the ultraviolet component is less, it does not induce insects, the illuminated object does not fade, and the color temperature is only 2100K.

3. Self-ballasted fluorescent lamp

The luminous efficiency is more than 60 lumens/watt, which is 4 times higher than that of ordinary incandescent lamps, and the service life is more than 8000 hours.

4. Double-ended fluorescent lamp

(Thin tube diameter) Compared with double-ended fluorescent lamp (thick tube diameter), the service life is extended by 20%, the luminous efficiency is increased by 22%, the energy saving is 10%, and the service life can reach more than 10000 hours.

5. Electronic ballast

Compared with inductive ballasts, 40-watt and 20-watt electronic ballasts save 5 watts and 3 watts respectively in power consumption. When a 20-watt electronic ballast is used in a household to save 20 kW watts of electricity, a 40-watt electronic ballast saves 60 degrees of electricity per year. In addition, a voltage as low as 130 volts can also start to shine.

6, led lights

LED lamp is a new light source with a color rendering index of more than 90, a light efficiency of 110 lumens/watt, and a color temperature of 4000-6000K. Advantages Long life (more than 50000 hours), energy saving 80%, environmental protection (no ultraviolet stroboscopic no heavy metals), good color rendering. It is the latest light source in the world today.

4. lighting of shopping:

1. Principle of simplicity

Lighting in the room should play the role of the finishing touch. Too complex shape, too complicated colors, are not suitable for simple design of the room. Of course, the most important thing is to match with your home decoration. Do you advocate harmony now! There are corresponding lighting engineers who can better design your new home. Let you not only save time, but also have a good home lighting effect.

2. The principle of convenience

Most people have experienced the embarrassment of replacing x and ceiling light bulbs: stepping on the table, stepping on the chair, holding their heads high 90 degrees, and lifting their arms to a ceiling 2.5 meters high or even higher. When choosing lamps, be sure to consider the convenience of replacing bulbs.

3. Energy-saving principle

Energy-saving light bulbs save electricity, good illumination, and will not emit too much heat, suitable for multi-head lamps. Energy-saving bulbs are mostly standard screw, and chandeliers have two calibers, one is standard, you can use energy-saving bulbs; one is the kind of non-standard, can not use energy-saving bulbs. When choosing, pay attention to: spotlights are mostly the kind of non-energy-saving products. The future trend is the LED light source.

4. Safety principles

Be sure to choose regular manufacturers of lamps. Regular products are marked with total load. According to the total load, it is possible to determine how many wattage bulbs are used, especially for multi-head chandeliers, that is, the number of heads × wattage of each bulb = total load. In addition, the bathroom and kitchen with large moisture should use waterproof lamps and lanterns.

5. Functional principles

Different use function of the room, should be installed with different styles, lighting lighting. The living room should choose bright and rich lamps. Bedroom should choose lamps that make people feel dazzling when lying in bed. Children's room should use lamps with gorgeous colors and varied styles. Toilet should use waterproof lamps with simple style. The kitchen should choose lamps that are easy to clean. Some places that need special performance can also choose spotlights.

6. Principle of coordination

A home lighting-based brand lighting, products to fashion, energy saving, environmental protection for the design concept, set decorative lighting and the overall style of the room to be coordinated, and a variety of lamps in the same room, should maintain color coordination or style coordination. Rectangular balconies with wooden walls, wooden cabinets and wooden roofs are suitable for installing rectangular wooden lamps. Rectangular foyer equipped with wrought iron watch, iron pipe glass dining table and chair, suitable for installing chandeliers made of rectangular iron pipe; Bedrooms with golden cabinet door handles and golden spotlights are suitable for lamps with golden decoration.