All Types of LED Light Bulbs

The best light is natural light without context, it is to use it to the fullest and let her in as much as possible in our buildings. Of course at some times this is not enough and it is necessary to resort to artificial lighting.

Light Bulb Types

The choice of a light bulb

Light bulbs carry an energy label which the class A ++ (green) (red) e according to their energy efficiency.

The bulbs are always of class A or B and the halogens are class C or D. LEDS are generally class A or A +.

The label also shows the energy consumption in kWh / 1000 h.

It is obtained by multiplying by the time power: a bulb 12W lit 3 h/day (or 1000 hours/year) consumes 12W x 1000 hours/year = 12.000Wh / year or 12 kWh/year.

The temperature of the light is also an important characteristic, it is expressed in Kelvin and bulbs, varies from 2700 K (warm light) to 6000 K (cold light).

How to replace a 60W bulb?

The LED

Short for light emitting diode, the LED dimmable lights are needed in the modern home interior lighting: technical improvements and price reductions are an alternative, even in the face of the CFLs, as they contain no mercury, are dimmable, light up instantly and are smaller in size.

Benefits:

  • Low power consumption (for an amount of equivalent light, their power is slightly lower than that of the fluocomptactes).
  • High life: 20,000 to 40,000 h!
  • Very small size, and color variables, dimmable, they allow a lot of fantasy.
  • In new installation they divide the installed capacity by 10 (compared to incandescent lighting) while providing an excellent light.

Disadvantages:

  • Their main disadvantage is their cost, although this is declining.
  • The quality of the bulbs is very variable and it is not easy to separate them based on labelling. Avoid in any case cheap lamps that have a very low brightness.

LED Light Bulb

The CFLs

Also known as CFLS, these “economic” lamps are a variant of the tubes fluorescent, less obtrusive than these. The tube is disposed in a circle or simply ‘U’ and is sometimes wrapped in a bulb of protection. The used tube is thinner and shorter.

CFLs are a great alternative to conventional incandescent bulbs: they consume 5 times less energy for the same amount of light.

Disadvantages:

  • Their cost is higher than that of a conventional bulb (but it pays for itself after 1000 hours of use, or a year on average).
  • The rise is not instantaneous, with some models it takes several tens of seconds before the lamp to provide its maximum illuminance.
  • They contain mercury and cannot be discarded in the household but much garbage with small chemical waste.
  • They emit electromagnetic fields, better avoid them like bedside lamp or as a desk lamp (cases where the lamp is less than 30 cm from the head for an extended period).
  • They are generally not dimmable, work less well at low temperatures and do not like to be off and on repeatedly, even if there are models suitable for these three cases.

Benefits:

  • Their life expectancy is high: 5000 to 15000 hours.
  • Despite a slightly higher purchase price, they can make substantial savings over their life and can be depreciated in one year.

CFL Light Bulb

Fluorescent bulbs (sometimes referred to as “Neon”)

It is the gas in the tube (mercury vapour) emits ultraviolet radiation.

These are transformed into light photons in contact with fluorescent pigments lining the inner wall of the tube. To function, this type of lamp requires a device including a starter (provides the electric pulse to excite the gas) and a ballast (removes the flickering) or an electronic ballast using the two functions.

Benefits:

  • They are cheap to buy;
  • They have a great efficiency in terms of lumens provided per consumed watt.

Disadvantages:

  • Their dimensions are impractical;
  • The light is often enough “cold”;
  • They contain mercury and cannot be thrown in the garbage but with small chemical waste.

Fluorescent Light Bulb

Halogen bulbs

These are lamps incandescent bulb containing vapours of bromine or iodine. These gases allow fragments of tungsten that come off of the filament to redeposit. The filament deteriorates slower than in the case of conventional bulbs and allows a warm up much more important (more light) and whiter than a regular lamp.

There are “eco-halogen” more effective, allowing you to save 30% of electricity, which is low in the face of the 80 to 90% of savings by the CFLs and LEDs.

Disadvantages:

  • Quartz bulb is fragile. It does not support the traces of fat that do break out (clean alcohol if necessary).
  • In the case of the lamps on foot, typically a very powerful bulb (and thus energy) oriented toward the ceiling. Choose rather direct, punctual lighting more profitable light emitted.
  • Inverters of intensity, often used for halogen lamps, do not reduce the power consumption in the same proportions (the dimmer heats and “pump” part of consumption!)
  • For some lamps, the dimmer is located at the decision-making level: it is therefore constantly under tension and consumes power, even when the lamp is off.

Benefits:

  • Their light output is about two times higher than conventional incandescent lamps.
  • Their life is two times longer than conventional incandescent lamps (+/-2000 h).
  • Their small size allows to use very compact lights.

Halogen Light Bulb

The ‘old’ incandescent bulbs

These lamps were very popular until their withdrawal from the rays (they have completely disappeared since September 2012). They were cheap but were very few effective: 95% of the energy was dissipated as heat.

Incandescent Light Bulb

Tips

  • Choose best suited to the room and the service light bulbs: fluorescent tubes in the kitchen, the garage; CFLs or LED lamps in the stay and places we occupied for hours.
  • Turn off the light when you leave the room (even economic lamps and fluorescent tubes as soon as one leaves a piece longer than 15 minutes!).
  • Install a timer and/or motion detector in the places of passage (hallway and stairwell).
  • Multiply the punctual light sources rather than installing a unique lighting of high power for an entire room.
  • Regularly dust the bulbs.
  • Set up the offices and living rooms in locations naturally lit by the Sun.
  • Thinking about install work near windows plans.
  • Paint the walls in light colors; install mirrors to reflect the light.

Gallery

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