LED headlights for cars: advantages and disadvantages

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When it comes to cars, lighting obviously matters. The motorist must be aware of how fundamental the choice of headlamps is, not only for an aesthetic or wallet factor, but also and above all for his own safety and that of the passengers.

Among the types of automotive lighting, LED headlights are very popular, so much so that car manufacturers are now inserting LED bulbs by default in the headlights of cars on the market.

It is a new type of lighting (taking into account the old halogens and incandescent) of which it is however necessary to know both the advantages and the disadvantages before deciding to replace them with traditional bulbs. In this document, we are going to know more about LED headlights for cars, what are the advantages and whether there are also disadvantages.

What are LED headlights?

Before we analyze the pros and cons, let’s try to understand what LED headlights are and how they are constructed. Unlike normal traditional car headlights, these are not real bulbs, but a compact group of light emitting diodes (it’s no coincidence that LED stands for Light Emitting Diod).

LEDs are elements capable of emitting spontaneous light when they are crossed by a certain electric current, generally a very low current is enough to obtain a wide beam of light.

If you are wondering how light emitting diodes are made, well they have a chip inside. On the outside, however, they have two filaments, one representing the positive pole, the other the negative pole. The negative is connected to a low voltage power source.

It is a fairly simple control, which can be used with extreme ease, and which is perfect in the automotive sector both for the front headlights and for the position lights, the rear lights, the interior lighting of the passenger compartment. , and the light of the plate. LED lights are also used for high beam and low beam and in this case they take the name of full LED.

Keep in mind, however, that each LED is distinguished from the others, for the intense light beam capable of emitting, for the power and therefore also for the cost. The most common models used by most cars are h7 LED and h4 LED bulbs.

The advantages of LED headlights

Now let’s see what are the advantages of LED headlights. There will surely be a reason why even the most important car manufacturers are gradually switching from traditional headlights to LED headlights. And the reasons are as follows:

  • Have greater visibility. Compared to halogen bulbs, LED bulbs provide a wide field of vision even at night, thus ensuring additional safety for the motorist while driving. This greater visibility depends on the fact that the color tint that can be obtained from LED car headlights is slightly different from that of daytime running lights, with all the advantages that this brings in terms of safety and comfort. conduct. In addition, it must be said that the light emitted by LEDs is free from ultraviolet and infrared rays;
  • Compactness. LED bulbs are very compact, which means that more bulbs can be fitted inside the headlights than traditional bulbs. In short, with the same available space, the brightness will be much greater;
  • Energy consumption. Compared to traditional bulbs, LEDs consume five times less energy than other types of lighting;
  • Duration. The lifespan of LED headlights for cars is considerably longer than that of halogen headlights (we also speak of a longevity 20 times longer than that of xenon headlights). It is also thanks to the fact that the diodes do not undergo the impact of humidity, or are damaged by vibrations;
  • Zero maintenance. They don’t burn or lose color over time.

The disadvantages of LED headlights

Although the disadvantages are few compared to the advantages, they should still be considered before buying:

  • Heat production. Even if the heat output is less than in traditional bulbs, it may be necessary to install heat dissipation devices, that is to say mainly cooling fans;
  • The cost. Considering the amount of benefits, LED bulbs are likely to be more expensive than other older technologies. So if a replacement is necessary, for example following an accident which damaged the optical unit, the purchase will be more expensive than that of halogen headlights;
  • Electronics overheating. LED headlights cause the control electronics to overheat. Therefore, it is necessary to install fans or small radiators, which have the task of dissipating excess heat.

We can conclude by saying that LED headlights are destined to become the present of car manufacturers who increasingly want to replace halogen and xenon bulbs with LED technology. And while the cost may be higher, the fact that they last a lot longer will make up for the initial expense.



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