“We bought a new candle arch with LEDs”, my colleague Torsten Barthel tells me at breakfast in the office.The chewing round nods devoutly – everyone knows what he wants to tell us:From now on energy-saving through the pre-Christmas period.
Just because in the dark season is much gelichtelt, this is an occasion to think about the associated electricity costs.In the last year around this time, I was concerned about the question of how energy-saving Christmas lighting can look like and reported on the blog.
One option are said LED lights.What exactly is the abbreviation?How do they work?And where are they deployed?
LED stands for “seafordecommerce“.I translate this: an electrical component that emits light.Also known as the light-emitting diode.As soon as electrical current flows through the diode, it emits light, infrared or ultraviolet radiation.Different colors are created when different materials and wavelengths are used.
In contrast to incandescent lamps, light-emitting diodes do not have a filament that is heated up with electric current and excited to light up.Therefore, they radiate less heat with the same light intensity.With much less electricity, significantly more light can be generated.LEDs are therefore highly efficient.
This 3-D animation explains the structure and function of an LED better than I can.
LEDs are not new.As early as 1907, English researcher Henry Joseph Round discovered that inorganic substances can light up when an electrical voltage is applied.Light-emitting diodes are based on this basic principle.
However, they have only been used for lighting for a few years.In the past, they were used as small light points in display elements – for example, charging devices.In the meantime, they have been further developed in such a way that they are similar to bright 75 watt incandescent lamps.
LEDs are comparatively expensive.Their use is therefore most worthwhile where they light up long and often.I think of stairs, kitchens or children’s rooms.The brochure of the “Fördergemeinschaft Gutes Licht” (“Fördergemeinschaft Gutes Licht”) provides a good, comprehensive overview of the light source LED, its advantages and application areas.
Where the idea of light-emitting diodes originates and how they function, I now know.The question is, how are LEDs striking against their competitors, energy saving and halogen lamps?Where can they benefit, where do they have disadvantages?I will find it and tell you.
My colleague will surely have many Christmas joy at his bow.And if the new acquisition is expected in a few years, he shines with the light shine.And you?Do you use LEDs at home?If yes, where?