1000 hours ≈ 42 days.
6000 hours ≈ 250 days.
100,000 hours ≈4167 days.
These three values are the theoretical service life of incandescent lamps, fluorescent lamps, and LED lamps.
Why is the service life of LED lamps much higher than that of incandescent lamps and fluorescent lamps?
The incandescent lamp relies on the high heat of the tungsten filament to illuminate. During the use process, the tungsten filament will continue to sublimate and become thinner and thinner until it burns.
Fluorescent lamps rely on low-pressure mercury vapor to release ultraviolet rays after being energized, which excites phosphors to emit visible light. When the lamp circuit is working, the electron emitting material in the tube will gradually age until the lamp tube is scrapped.
The light-emitting module of the LED bulb lamp The LED module is a solid-state semiconductor device that can convert electrical energy into visible light. It can directly convert electricity into light. It has high brightness, low heat and low loss, so the lifespan will be much longer.
However, the theoretical lifetime value of LED lights can reach 100,000 hours. In fact, this lifetime can only be reached by some low-power LED lights that act as indicator lights.
Why can’t the commonly used LED lights reach the theoretical lifespan? We will explain it next time.