What is incandescent? What are the types of incandescent?
2019-05-14

What is an incandescent lamp? An incandescent lamp is an electric light source that energizes a filament to an incandescent state and emits visible light using thermal radiation. Compared with other new light source products, incandescent lamps have low light efficiency, good light color and light collection performance, easy installation and use, immediate start-up, long service life and low cost. They are the most widely used electric light source.


When it comes to lighting, I believe that the first thing that people think of is the incandescent lamp. After all, this is the first light that has been used for the night life of human beings. So what exactly is an incandescent lamp? What types are there?


什么是白炽灯 白炽灯种类有哪些


What is incandescent lamp


An incandescent lamp energizes the filament to an incandescent state, using an electric source that emits visible light using thermal radiation. Since 1879, T.A. Edison of the United States has made carbon fiber (ie carbon filament) incandescent lamps. Since the filament material, filament structure and filling gas have been continuously improved, the luminous efficiency of incandescent lamps has also increased accordingly. In 1959, the United States developed a tungsten halogen lamp with a small volume and low extinction on the basis of incandescent lamps. The development trend of incandescent lamps is mainly to develop energy-saving bulbs. Although the light efficiency of incandescent lamps is low, the light color and light collecting performance are good, and it is the largest and most widely used electric light source.


The light emitted by incandescent lamps is full-color, but the proportion of the components of various shades is determined by the luminescent material (tungsten) and temperature. The imbalance of the proportion leads to the color cast of the light, so the color of the object under the incandescent lamp is not real enough.


With the emergence of new products, new light sources have also been born, such as LED light-emitting diodes, which are semiconductor solid-state light-emitting devices, known as the fourth-generation illumination source or green light source, which are energy-saving, environmentally friendly, long-life, small, etc. Features, the service life can reach 60,000 to 100,000 hours, more than 10 times longer than the traditional light source; electro-optical power conversion can exceed 10%, the same lighting effect is more than 80% energy saving than traditional light sources.


What are the types of incandescent lamps?


An incandescent lamp is a light-emitting device made according to the thermal effect of electric current. It is an electric light source that energizes the filament to an incandescent state and emits visible light by thermal radiation. It was invented by T.A. Edison of the United States in 1879. Although the light efficiency of incandescent lamps is low, the light color and light collecting performance are good, and it is the largest and most widely used electric light source.


Incandescent lamps can be divided into general lighting bulbs and special lighting bulbs according to their purposes. Ordinary lighting bulbs can be divided into colorless (transparent) bulbs, white bulbs, milky white bulbs, frosted bulbs, colored bulbs, single-helical bulbs, double-helical bulbs, spherical bulbs, mushroom-shaped bulbs, and shake-shaped bulbs according to their structure and shape. , Reflective bulbs, screw bulbs (types E14, E27), bayonet (socket) bulbs (types B14, B22) and so on.


Special lighting bulbs include decorative bulbs, partial lighting bulbs, road locomotive bulbs, military bulbs, camera bulbs, infrared bulbs, shadowless bulbs, instrument bulbs, underwater bulbs, indicator bulbs, mining bulbs, marine bulbs, aircraft bulbs, Spotlight bulbs, projection bulbs, light bulbs, printing bulbs, explosion-proof bulbs, compact bulbs, ultra-small bulbs (micro bulbs, rice bulbs), etc. Photoelectric parameters and external dimensions are extremely diverse.


The difference between incandescent and energy-saving lamps


1. The ratio of advantages and disadvantages:


Although the light efficiency of incandescent lamps is low, the light color and light collecting performance are good, the installation and use are easy, they can be started immediately, and the cost is low. It is the largest and most widely used electric light source, and for more than 100 years, people do not The research on stoppage, the continuous improvement of filament material, filament structure and filling gas, the luminous efficiency of incandescent lamps is also improving with the times.


Energy-saving lamps, this kind of light source only needs 1/5 to 1/4 of the electricity consumption of ordinary incandescent lamps under the premise of achieving the same light energy output, which can save a lot of lighting energy and cost. 1) Energy saving compared with ordinary fluorescent lamps 70 -80%, low voltage fast start, no strobe. 2) Use pure trichromatic phosphor tubes to make the illuminated objects bright and fresh. 3) The design is novel, with a number of patented technologies. The bracket is made of aluminum alloy material, which is small and beautiful, never rust, environmentally friendly and flame retardant.


什么是白炽灯 白炽灯种类有哪些


2. Life ratio:


The average life of an incandescent lamp is 1000 hours. When the incandescent lamp is used for a long time, the glass bulb will turn black, and after a while, it will blow out because the filament used in the incandescent lamp is made of tungsten wire. After the power is turned on, the temperature inside the bulb is as high as 2000 degrees. The long-term high temperature causes the tungsten atoms on the surface of the tungsten wire to continuously evaporate and diffuse like water vapor, and then deposit layer by layer on the inner surface of the glass bulb to make the glass bulb. Slowly blackened and increasingly opaque. The evaporation of tungsten also makes the tungsten wire thinner and finer, and finally blows. The higher the filament operating temperature, the faster the evaporation of tungsten and the shorter the life of the incandescent lamp. The life of energy-saving lamps is as long as 8,000 hours, and the luminous efficiency is 6 to 8 times that of ordinary light bulbs.


3. The ratio of electricity:


A family uses 15 bulbs, 40W for each bulb. Take Philips energy-saving lamps as an example. The 5W energy-saving lamps have a brightness of 25W incandescent lamps, so 40W incandescent lamps are equivalent to 8W energy-saving lamps.


(1) General bulb electricity fee:


15 lamps × 40W / only × 5 hours / day × 30 days = 90000W × hour = 90 degrees


Monthly electricity fee = 90 degrees × 1 yuan / degree = 90 yuan


(2) Electricity fee for energy-saving lamps:


15 lamps × 8W / only × 5 hours / day × 30 days = 18000W × hour = 18 degrees


Monthly electricity fee = 18 degrees × 1 yuan / degree = 18 yuan


That is, this family can save electricity every month after using energy-saving lamps: 90 yuan - 18 yuan = 72 yuan, one year can save electricity costs 864 yuan


4. Price ratio:


The market price of incandescent lamps is 25W to 100W, and the price is 2 yuan to 3 yuan. The price of energy-saving lamps ranges from 8 yuan to tens of yuan. The price is several times that of incandescent lamps. Only the bulb is counted, the incandescent lamp is 3×15=45 yuan, and the energy-saving lamp is 15×15=225 yuan, but from the practical application point of view, one household energy-saving lamp is 864 yuan-225 yuan=639 yuan a year. In this way, it is still more economical to save energy.


Source: Building Materials Purchasing Network