LED Special
LED Special

LED expertise has a name: HELLA

Virtually no other technology has come close to assuming the same degree of importance in vehicle lighting in recent years as LED technology. HELLA has been at the forefront of the development and implementation of innovative LED solutions for more than 20 years. The result is innovative products such as our auxiliary lamps in full-LED technology, including the Luminator Compact LED.
When it comes to LED technology, customers always have questions about the functionality, advantages and cost/benefit ratio. In this LED Special we would therefore like to give you expert answers to the most frequently asked questions and take this opportunity to share specialist HELLA LED knowledge with you.


  • What is an LED?

An LED is a light-emitting semiconductor component part that gives off visible light, infrared radiation or ultraviolet radiation as soon as current flows through the diode. Here, the semi-conductor material used is critical for determining the wavelength. An LED consists mainly of an anode, cathode, semiconductor crystal, bond wire and housing. For most LEDs, the cathode also acts as the reflector. The bond wire connects the crystal to the diode. The solder joint forms one of the two electrical connections for the crystal. At the same time, it absorbs the dissipated heat that develops because the semiconductor crystal can convert only a portion of the electrical power into light.
LEDs are operated at a temperature-dependent so-called "operating point", which must be precisely specified or set.
Direct connection of an LED to a voltage source without a series resistor is not possible. Today, LEDs are used in many areas: whether in a smartphone display, LED television, domestic lighting or even modern OP equipment: the small light-emitting diodes are now a fixed part of everyday life.
This also particularly applies to the area of vehicle lighting: in addition to use in main headlamps, high beams and auxiliary lamps, daytime running lights and (combination) rear lights, LEDs are also used for side marker lights and signal lights, for example. This ensures that a broad range of applications are available for commercial vehicles. Regardless of whether high-performance auxiliary lamps, such as the HELLA Light Bar 470, reversing lights or single-function lamps: LEDs can make a considerable contribution to ensuring operation is more efficient, effective and safe.
In many cases, the existing conventional lighting environment on trucks and trailers can be professionally converted to the modern LED technology.
Since the very start, HELLA has been one of the pioneers and innovation leaders when it comes to the development and production of LED vehicle lighting. You will encounter thousands of our LED products every day on the roads, whether in daytime running lights and the main headlamps of passenger cars, beacons of emergency vehicles or auxiliary lamps on trucks. HELLA stands for LEDs!

  • What is an LED?

On the roads, you will frequently encounter trucks and tractors with trailers, on which the dim or tail light is usually no longer working on one side. This can cause dangerous situations, especially if other road users only see the truck when it is too late due to the bad lighting. Just like on passenger cars, the reason for the failure is usually caused by a faulty bulb that needs to be replaced. Corresponding bulbs, such as the high quality bulbs from HELLA are available from independent spare part suppliers.

But can such failures also happen with LEDs? The good news is: usually not. LEDs generally have a very long service life, which is often even longer than the life of the car. This is one of the most significant advantages of LEDs compared to conventional light sources such as halogen lamps. While these bulbs can fail over the course of a vehicle"s lifetime and must then be repurchased and replaced as described above, LEDs are by and large maintenance-free. Together with the low energy consumption and the high energy efficiency, this results in considerable cost advantages for the LEDs over the medium term due to their long service life. This particularly applies to larger fleets where the cost savings soon add up.
But how long do LEDs really last? Unfortunately there is no simple answer to this question because a very large number of influence factors play a role, for example the quality of the utilized LEDs, the frequency with which they are switched on and off, the thermal management system used and many other factors. As a guideline, it can be said that an LED can certainly attain a service life of 30,000 hours and more - whereas conventional 24 V halogen bulbs usually fail after just 2,000 - 4,000 hours.
Naturally, even the best LEDs cannot avoid the effects of adverse environmental influences. As a result, even LEDs in headlamps can fail in extremely unfavorable circumstances. These cannot be replaced individually at present. Unfortunately, such scenarios require the complete headlamp to be replaced. But at least with HELLA headlamps this happens extremely rarely.

  • Discover the advantages of HELLA LED headlamps for your truck.

Yes, that is true. In addition to the aforementioned long service life, high energy efficiency is one of the main advantages of LED technology. LEDs consume little energy and achieve a high maximum output and are thus among the top performers of the light source world.
Low power consumption saves energy and also reduces costs. Thanks to the low operating costs, in most cases it is still worthwhile purchasing LEDs despite purchasing costs currently still being slightly higher. When it comes to larger fleets of trucks, the cost savings for all of the vehicles soon add up.
Furthermore, the low power consumption also has another positive side effect: they are particularly sparing on the energy resources of your vehicle - good for the service life of the battery, and not least for the environment due to reduced CO2 emissions.
Energy-efficient vehicle lighting is already an important topic and will continue to increase in importance. It is anticipated that the number of electric vehicles will increase considerably in the coming years. This means that careful use of the vehicle"s own energy resources will once again gain particular significance. As a result, the use of highly efficient LED technology is almost inevitable in this field in particular. The development of electrically driven commercial vehicles is still in its infancy, although it will only be a matter of time before there are technological advances in this area as well.

  • Energy-efficient vehicle lighting for your truck - with LEDs from HELLA.

You are probably familiar with the following: You would like to replace a bulb or a halogen light source in a truck headlamp, however, it has only just been in operation and you end up burning your fingers. Standard light sources generate a lot of heat when they are switched on. At the same time, this means that they have a poor level of energy efficiency as dissipated heat that is not used equates to lost energy.

Does this also apply to LEDs? Do they also get that hot? The answer is not unequivocally "No". One things is clear: LEDs generate operating heat. However, this far below the amount of heat that is generated by a comparable bulb. LEDs are thus highly energy-efficient. Unlike standard bulbs, they convert a large part of the supplied energy into light. A 60-watt bulb, for example, has an illuminating power of approx. 600 lumen. In comparison, a current LED bulb with the same illuminating power only uses approx. 8 watt.

LED headlamps generate very little UV and infrared light. This means, that unlike standard halogen headlamps, they do not heat up where the light is emitted. However, a LED headlamp can still generate heat in the housing. In this case, it is generated by the electronics used for the relevant headlamp, without which optimum light results could not be achieved. Excellent thermal management is therefore very important, as the heat that is generated must be discharged reliably. Optimum temperature management not only ensures the correct functioning of HELLA headlamps but also significantly extends the service life.

HELLA Light Bar 350 and 470 auxiliary lamps, for example, have an innovative plastic housing with a special ribbed design that provides optimum heat dissipation ensuring headlamps have a long service life.

Conclusion: LED headlamps also generate heat. However, at least HELLA headlamps will definitely not burn your fingers and you certainly cannot fry an egg on them.

  • Discover the benefits LEDs have to offer with HELLA!

Just like standard lighting technologies, LEDs can generate different light colors. However, in this case, light color does not refer to a colored light, such as red, green or blue LEDs, but the appearance of the light that is generated by white LEDs.

The light color is also referred to as the color temperature and is generally specified in Kelvin. In principle, there are three different color perception areas: warm white (less than 3300 Kelvin color temperature), neutral white (3300 - 5000 Kelvin color temperature) and daylight white (more than 5000 Kelvin color temperature). LEDs can cover the entire spectrum.

The light color that is similar to daylight is particularly important in the truck lighting sector, especially when it comes to main and auxiliary lamps. It has been proven that this light color in conjunction with a homogeneous light distribution provides the best possible illumination of the road. High-performance auxiliary lamps, such as HELLA Lightbar 350 and 470 that are particularly suitable for truck cabins, provide a light color similar to daylight thus ensuring significantly improved visibility. In addition, light that is similar to daylight effectively reduces driver fatigue that is frequently encountered when it is dark, thus increasing the safety for all road users.

When the LEDs used for HELLA high-power LED headlamps are selected, they are already assessed based on the strictest quality standards regarding the light color and brightness. Both values must be within a strictly specified tolerance range. This is the only way that a consistently high and uniform light quality with regard to brightness, light color and other characteristics can be ensured.

An individual"s perception of a color is subjective regardless of the actual measurable Kelvin values. Color is thus a sensory impression and without any technical aids, humans are not able to determine the composition of the light. This is why it is virtually impossible to determine how other people perceive the color in comparison to us.

So do not be surprised if the environment maybe feels a little "more colorful" than it does to others - this is all down to your personal perception of colors.

  • Convince yourself of the constantly high light quality of HELLA LEDs.

This answer is pretty simple - LEDs are basically suitable for everyone. Especially truck drivers but also fleet operators particularly benefit from the use of LED technology. This technology has a lot of advantages to offers, including improved street lighting with a light color that is similar to daylight, durability, maintenance-free properties and a high level of energy efficiency.

Truck drivers whose trucks are already equipped with the modern LED technology confirm that LEDs simply help you to have a better view. This is because the high-performance main and auxiliary lamps illuminate roads particularly well when it is dark. The visibility of the route and objects is optimized and the perception of your own vehicle by other road users is improved. The light color, which is close to that of natural daylight helps combat eye fatigue. This is a benefit that should not be underestimated, especially by drivers who cover long distances when it is dark. LEDs therefore also help with safety.

Fleet operators, in particular, benefit from the medium-term cost advantages of LEDs, even if purchasing LED headlamps is currently still a little more expensive. This is because LEDs will often last as long as the life of the car and are mostly maintenance-free. Vehicle breakdowns caused by faulty lighting and inconvenient bulb replacements, as well as purchasing replacement bulbs are thus a thing of the past. Other cost savings can be made thanks to the high-level of energy-efficiency, as the lower power consumption of LED headlamps also reduces fuel consumption. The associated CO2 reduction is also particularly environmentally-friendly. In many cases, the existing halogen technology can be converted to the new LED technology in just a few steps without having to make expensive new purchases.

Therefore there are many reasons to fully switch to LED lighting in the truck sector.

  • Discover the benefits of HELLA LEDs for your vehicle.
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