Incandescent lamp CFL Bulb Energy-Saving lamp LED bulbs difference between

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Incandescent lamp CFL Bulb Energy-Saving lamp LED bulbs difference between

The detailed explanation the difference between incandescent lamp, CFL Bulb, energy-saving lamp, and LED bulbs.

Incandescent lamp, CFL Bulb, Energy-Saving lamp

Early on, people began to use incandescent lamps.


At that time, people’s understanding of lamps is not very one-sided. It’s enough to think that they have the function of illuminating.


However, with the development of society and the improvement of people’s living standards, people are increasingly demanding lamps, such as fluorescent lamps, energy-saving lamps and LED lamps.


So do you really understand the difference between these lights?

Do you know how they work?

Do you know their strengths and weaknesses?

Now let’s popularize the knowledge of these kinds of lamps.

Incandescent lamp

Incandescent lamp CFL Bulb Energy-Saving lamp LED bulbs difference between


 Incandescent lamp is the oldest lamp with different uses and requirements.

The structure and components of the incandescent lamp are different.

It will enter thousands of households with the characteristics of low cost and good color rendering.

It is also a kind of lamp that should be widely used at present.


Working Principle:

When the lamp is connected to the circuit, the current flows through the filament, and the thermal effect of the current causes the incandescent lamp to emit continuous visible and infrared light.

This phenomenon can be detected when the filament temperature rises to 700K.

However, due to the high filament temperature, its energy will be wasted by infrared radiation, evaporation will be faster, and its service life will be greatly shortened.

Incandescent lamp CFL Bulb Energy-Saving lamp LED bulbs difference between

CFL Bulb (Compact fluorescent lamp

Incandescent lamp CFL Bulb Energy-Saving lamp LED bulbs difference between


Fluorescent lamp is also called fluorescent lamp. Simply speaking, it is a sealed gas discharge tube.

The main gas in the tube is argon gas (including neon or krypton) which is about 0.3% of atmospheric pressure. It also contains a few drops of mercury, which forms trace amounts of mercury vapor.


Working Principle:

Ultraviolet radiation is released by mercury vapor at low pressure after electrification, which makes phosphor emit visible light. Therefore, it belongs to the low-pressure arc discharge light source.

CFL Bulb Working Principle

Energy-Saving lamp

Incandescent lamp CFL Bulb Energy-Saving lamp LED bulbs difference between


As we all know, energy-saving lamp is a kind of lighting that saves electricity.

People call it an energy-saving lamp and electronic lamp.

It was first invented by foreign manufacturers in 1978.

It is welcomed by all countries and regions in the world because of its small size, long life, convenient use and obvious energy-saving effect.


Working Principle:

Energy-saving lamp is operated by the principle of gas discharge.

It is a fluorescent lamp with compact ballast.

In the process of ignition, it will be heated by an electronic ballast to the lamp tube and emit electrons at the beginning of the filament. Electrons collide with argon atoms in the lamp tube. After the collision of argon atoms, energy will appear and consequently impact the interior.

Energy-Saving lamp Working Principle

LED bulbs


Also known as light-emitting diodes, it is a solid-state semiconductor device that can directly convert electricity into light.

Working Principle:

The heart of LED is a semiconductor wafer.

One end of the wafer is attached to a bracket, the other end is connected with the positive pole of the power supply so that the whole wafer is encapsulated by epoxy resin.


Semiconductor wafers consist of three parts, one is a P-type semiconductor, in which the holes dominate, and the other is an N-type semiconductor, in which the electrons are the main part, and the quantum wells in the middle are usually one to five cycles.

When the current acts on the wafer through a wire, electrons, and holes are pushed into a vector sub-well, where electrons recombine with holes and then emit energy in the form of photons.

Incandescent lamp, CFL Bulb, Energy-Saving lamp, LED bulbs difference between

1. Service life

The service life of the incandescent lamp is short, usually within 1000 hours.

The fluorescent lamp is usually about 2500 – 3500 hours.

The life of the energy-saving lamp is more than 6000 hours.

The life of LED bulbs lamp is about 100,000 hours.


2. optical efficiency

The incandescent lamp is only 10 lm/W.

The light efficiency of energy-saving lamps is generally 40-80 lm/W.

The light efficiency of fluorescent lamps is generally 60LM/W.

The light efficiency of the LED light source ranges from 90 LM/W to 130 LM/W.


3. Switching Performance

There are filaments in an incandescent lamp, fluorescent lamp, and energy-saving lamp. The filament temperature changes from cold to hot in the ignition process. Because the filament cold resistance is small and the thermal resistance is large, the filament current changes from large to small in the ignition process. Therefore, the filament is easily damaged by the current shock when it is frequently connected and disconnected.

The switch performance of energy-saving lamp and the fluorescent lamp is poor. The frequent switch will shorten the service life.

Frequent switching has little effect on incandescent lamps.

The light-emitting principle of LED is completely different from that of the above-mentioned lamp. There is no current shock when the power supply is turned on or off, so its life is not easily affected by frequent switches.

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You know the difference incandescent CFL Energy-Saving LED bulbs?

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