Halogen lamp, HID, and LED headlights

Halogen lamp, HID, and LED headlights

Halogen lamp, HID, and LED headlights

head light

There are a lot of difficult technical terms to understand in the automotive industry.

We will explain the words, “I know it, but can’t explain it properly!” and “I hesitate to ask my friends!!” on the article. It is a good time to learn something new. Let’s see the difference of headlight this time.

When driving at night, everyone uses headlights. Can you explain the difference between a Halogen lamp, HID and LED headlights?

Halogen lamp

halogen head light

Halogen lamps have been equipped with most vehicles for a long time. It is the most common headlight source of automotive. Halogen bulbs are filled with inert gas such as nitrogen or argon and halogen gas (iodine, bromine, etc.). That makes high calorific value and warm color. In snowy areas, the heat from the lamp melts the snow on headlights. On the other hand, their life span is very short due to their high heat generation and power consumption. The lifespan is around 800 hours (3 years). Recently, HID and LED are more common for headlights

but some classic car freaks prefer halogen lights because of the color and ambience.

HID head light

HID head light

HID stands for “High Intensity Discharge”. It makes bluish white bright light with low power consumption. HID lights do not have a filament, but an inverter/igniter makes electrons and metal atoms in the bulb to collide (arc discharge) to shine. The lifespan is around 2000 hours (5 years). However the disadvantage is that it needs a few seconds to be maximum bright.

LED head light

LED head light

LED stands for “Light Emitting Diode”. LED head lights are becoming the standard. LED is a semiconductor which emits light when electricity is applied. Copper and aluminum, which conduct electricity, are called conductors. Rubber and plastic, which do not conduct electricity, are called insulators. Semiconductors are substances in between. The brightness is most powerful with low power consumption. The lifespan is around 30,000 hours (15 years), which is much better than halogen lamps and HID. However the disadvantage is that the replacement cost is very expensive. We can change the bulb of halogen lights and HIDs easily, but normally LED light is required to change the whole unit of the light (assembly). We hope that LED light will be more popular and cheaper in near future.

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