How to choose a good LED headlamp?
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In the past few years, the mainstream lighting sources in the automotive lighting industry are xenon lamps and halogen lamps.
With the continuous development and maturity of global LED high-tech,
LED headlamps are more and more widely used in automotive lighting.
LED lamps have spanned from the initial application of automotive interior lighting to To a wider range of applications
such as headlamps and combination taillights.LED lights have become a trend of car lights.
So in this article, we will introduce you how to choose the best led headlamp from the perspective of an engineer,
and draw conclusions and data by analyzing and testing led headlamps.
And we mentioned what other factors are related to the quality of led headlamp bulbs.
You will be able to easily judge the quality of LED headlamps after reading our post and following our method.
Next, we will analyze and explain through the structure of the car LED headlamp
and the effect after use.
一：structure
1.
1.LED headlamp bulbs Chip
The chip of the LED headlamp bulb occupies a very important position in the bulb.
Because the chip of the LED headlamp bulb can determine the brightness,
and can also control whether the cutting line is clear and whether it meets the regulations for driving on the road,
so the choice of the chip is very important.
You need to choose the most suitable chip according to your actual needs.
Using different LED headlamp chip, the price and effect are not the same.
So far, the well-known chips in the world are: COB, DOB, CSP 1860, CSP3570, ZES, CREE and so on.
How to choose agood LED headlamp
2.LED headlamp Lamp Body Material
The heat dissipation, durability and good-looking appearance
of LED headlamp bulbs depend on the material of the lamp body.
Therefore, we need to choose better heat dissipation materials
to enhance the heat dissipation capacity of the LED bulb and make the LED headlamp bulb output lumens more stably.
The thermal conductivity of metal is stronger than that of plastic,
and the LED headlamp bulbs made of high-grade aviation aluminum
are better in terms of heat dissipation, stability, and appearance.
Therefore, you can prefer to choose aviation aluminum material to make the lamp body.
3.LED Headlamp Copper thermal substrate
Since the heat dissipation performance of the copper plate is superior to that of the aluminum plate and iron plate,
the heat dissipation performance of the copper substrate is one
of the three major standards to measure the quality of the plate
(the thermal resistance value and the withstand voltage value are the other two properties).
The thermal conductivity of the copper substrate can be obtained by testing the test equipment after the plates are pressed.
The high thermal conductivity is generally ceramics, aluminum, etc.,
but due to cost considerations, most of the current market is copper substrates, and the corresponding.
The thermal conductivity of the copper substrate is a parameter that everyone cares about.
A higher thermal conductivity is one of the signs of better performance.
Copper substrate is a unique metal-based copper clad laminate copper substrate,
which has good thermal conductivity, electrical insulation performance and machinability.
4.LED Headlamp High-speed Fan
This LED fan has double balls inside.
The advantage of the double ball fan is that it has a long service life,
about 50,000~100,000 hours; it has good anti-aging performance.
The double ball bearing is completely embedded in the fan,
and the rotating part has no direct contact with the outside world.
In a sealed environment, the working environment of the bearing is relatively stable.
Therefore, almost all 5000-rpm large-diameter fans use double ball bearings.
Most of the LED car headlamp on the market are about 9000 rpm.
This heat dissipation principle is also called air-cooled heat dissipation!
5.LED Headlamp bulb Smartdriver
A driver is a semiconductor optoelectronic device that can convert electrical energy into light energy.
The driver is a type of optoelectronic semiconductor.
Each driver contains many different electronic components, such as resistors, capacitors,
and control integrated circuits.
When the LED headlamp bulb starts to work,
the driver will play a role in dealing with the heat generated by the lamp beads.
Therefore, under the same other conditions, an external driver is more conducive
to the heat dissipation and stability of the LED headlamp bulb.
二：Effect
1.The first step: look at the color temperature.
Color temperature is the most standardized indicator of the spectral quality of a light source.
Technically, we use color temperature (K) to indicate the color quality of a light source.
3000K yellow light
4300K white with yellow,
5500K full white light, the highest color temperature for European standard lights
Daylight under 6500K sunlight
7000-8000K white is obviously greenish
8000K exceeds Blu-ray
3000K-4300K halogen bulbs have the highest color temperature and yellowish light.
For night driving, the light brightness of halogen bulbs is not enough.
Although it can reduce driver fatigue, it is not suitable for safe driving at night.
5500K-6500K LED headlamp bulbs, full white light, can reach the illumination range of safe driving at night,
and have high driving safety.
7000K-8000K xenon bulbs, the bright white light is obviously bluish,
and the ultraviolet range has been improved, but the penetrating power is extremely poor.
Therefore, considering the comprehensive brightness and penetration and other factors,
I recommend LED car headlight bulbs with color temperature between 5500K-6500K,
because 5500K-6500K LED lights can meet the needs of car lights at night,
and there is no need to worry about the insufficient penetration of LED lights in rain and fog weather.
2.The second step: look at the power
The brightness of LED headlamp bulbs is closely related to the power.
Generally speaking, the higher the power, the brighter the headlamp bulbs,
but the higher the power, the more power consumption, and the more expensive the price.
3.The third step: look at the Lumens
The luminous flux reflects the strength of the visual response produced by the radiation of the light source per unit time,
and the unit is lumen, also known as brightness.
Lumen is the international unit of luminous flux.
It is defined according to the candela spherical angle.
One lumen is a considerable amount of light emitted in 1 spherical angle unit,
and the same amount of energy is emitted from the light source in all directions, and the intensity is 1cd.
Generally speaking, the lumens of 35w automotive LED headlamp bulb are 3200, 91 lumens per watt,
so it is most appropriate to choose 80-100 lumens/watt.
4.The fourth step: look at the lifetime
LED headlamp bulbs, like any product, you get what you pay for.
Inexpensive LED headlamp bulbs can save you money in the short term,
but it may create a risk of explosion or require frequent LED headlamp bulb replacements.
So a good LED headlamp bulb, while more expensive, but will last longer and function better.
5.The fifth step: look at the Light Beam pattern
The beam pattern of a car LED headlamp bulb refers to how the beam behaves when it flickers on the road.
Beam patterns must adhere to certain angles due to Society of Automotive Engineers (SAE) safety regulations.
The center of any automotive headlamp must shine at a height of no more than 36 inches from the ground.
And the low beam must be non-glare, non-astigmatism, and have a clear and reasonable tangent line,
so as not to affect the oncoming vehicles. There should be no black holes etc. in the center of high beam illumination.
I hope that after reading this blog, it will be helpful to you, increase your knowledge of LED lights, and make it easier for you to choose a good LED headlamp.
Finally, I would like to remind you that before buying LED headlamp bulbs,
please don’t forget to confirm the model of your LED headlamp bulbs.
If you are not sure of the bulb model, you can take out the halogen bulbs on your own car to confirm.
Or if you are not particularly sure, please contact us by email, I will provide you with quality service.