LED bulbs or light-emitting diode lamps.
What is the advantage of an LED light bulb?
To know the advantage of a LED bulb, it is interesting to compare the different types of bulbs that we can find on the market in relation to their luminous efficiency and their lifespan
The incandescent bulb has a luminous efficacy of 10 to 20lm/W and an average life in hours of 1000 to 2000 h.
The halogenbulb has a luminous efficacy of 15-20lm/W and an average life in hours of 2000-3000 h.
The fluorescent bul b or CFL has a luminous efficacy of 40 to 70 lm/W and an average life in hours of 6000 to 15000 h
The LEDbulb has a luminous efficacy of 40 to 135 lm/W and an average life in hours of 15,000 to 50,000 hours.
The figures given above are indicative and represent an average of the bulbs mentioned.
For our houses, we mainly use bulbs that are connected directly to the alternating current called 230 volts.
For a LED bulb to give its optimal efficiency, it is important that it remains cold. Unlike a halogen bulb, the LED bulb is composed of electronics that enable the operation of the diode(s).
LED bulbs do not give off heat towards the front of the bulb, but heat from the back (electronic component). If the bulb heats up, the life of this type of bulb may be shortened and will run for an average of 15,000 hours.
The price of a LED bulb can vary from single to triple, for the same amount of light announced. What will differentiate its price will be the quality of the electronics allowing its cooling and therefore its longevity and also the quality of the diode used.
What emerges is that LED bulbs have a much longer life than most other bulbs for a luminous efficiency that can be up to twice as efficient.
The switching on and off of the bulb will be fast without risk of damaging it, unlike CFL bulbs giving only 60% of their power after 60 seconds
Variety of colour temperature :
Contrary to our old bulbs, LED bulbs allow us to choose the colour diffused by the bulb, we can distinguish three families of colours.
Warm white: 2700K to 3000K
This is the closest colour temperature to halogen bulbs. The diffused colour will be more yellow and warmer. This colour temperature is generally used in living rooms such as the living room and dining room.
Neutral white: 4000K to 5000K
LED bulbs in neutral white give a bright light that can be compared to a very slightly warmer natural light. This colour temperature is mainly used in rooms such as the office as it helps to stimulate concentration. We can also place this type of colour in bathrooms close to a mirror, this colour temperature allows by its whiteness to restitute as accurately as possible the outside light rendering and will avoid our ladies an over make-up.
Cool white: 5000K to 6000K
This colour, with its brilliant hue, will highlight your exteriors in the evening. This temperature is the colour of daylight.
The main types of LED bulbs.
There are several formats and sizes of LED bulbs, so it is possible to replace all our old incandescent bulbs, our halogen bulbs or compact fluorescent bulbs by the new generation of LED bulbs.
Replacing our old incandescent bulbs, the most classic bulbs are the screw base bulbs type LED e27 or large screw.
With a smaller screw diameter and often flame-shaped, the e14 bulb will be used mainly in small fixtures or in chandeliers composed of several bulbs.
The LED GU10 bulb
This is the most used bulb in our ceiling spotlights, replacing our halogen reflector bulbs. This type of bulb allows you to choose the desired colour temperature and light diffusion angle. Some bulbs will also allow the variation of intensity.
Mainly used in relamping, LED GU5,3 bulbs are used in low voltage installations requiring a transformer.