Headlight Knowledge: Car Headlight Types and Functions

22/04/2022


For a vehicle, the lights are just as important as human eyes. Normally turning on or off is about whether the owner can drive the vehicle safely to the destination. Simply put, the lights have two functions, one is to provide lighting for the driver, to provide a good view when the weather is bad or at night; the other is to serve as a warning to remind the remaining vehicles and people .

                          car lights, TRENT LED Headlight bulb Car Headlight Types and Functions


Headlight type:
The classification of car lights can be divided according to two methods, the first: by location and use, and the second: by bulb material, as follows:
Depending on the installation location and purpose:

                          car lights

Car lights can be generally divided into: external lighting devices, internal lighting devices. Commonly used car headlight models are: H1 / H3 / H4 / H7, etc. The types, characteristics and uses of car lights are shown in the table below:


 
Kind Working characteristics Application
Exterir lighting Headlight White, Always on. High/Low Beam Provide protection for drivers to drive safely
Fog Light Yellow, Amber, Red. Always on Rainy, snowy, foggy days to ensure effective lighting and provide signals
License Plate Light White,Always on Used for illuminate the rear license plate of a car
Interior lighting Dome Light White,Always on Used for interior lighting at light
Dashboard Light White,Always on Used for viewing dashboard at night
Trunk Light White,Always on Used for picking up luggage at night

In addition to lights on cars, there are light signal signs to indicate other vehicles or pedestrians. These lights are called signal lights. Common types of signal lights are the following series: P21W, W5W, R10W, T5W and C5W.
The signal lights are also divided into external signal lights and internal signal lights. The external signal lights refer to the turn indicators, brake lights, tail lights, indicator lights, reversing lights, and the internal signal lights refer to the indicator lights on the dashboard, mainly including steering, oil pressure, charging, Instrument indicators such as braking and door closing prompts. The types, characteristics and uses of automobile signal lights are shown in the table below:
 
Kind Working characteristics Application
Exterir lighting Turn Signal Light Amber, Flash alternately Inform passers-by or other vehicles that a turn is coming
Side Marker Light White/Amber, Always on Inform the car width profile
Parking Light White/Red, Always on Inform the car is stopped
Brake Light Red, Always on Inform that it has slowed down or will stop
Reverse Light White, Always on Inform passers-by or other vehicles that the vehicle will reverse
Interior lighting Turn Signal Light White, Always on Inform the driver of the direction of the vehicle
Other Signal Light White, Always on Inform the driver of the vehicle's condition


Here's a reference to daytime running lights, which are lights that make it easier for a car to be recognized during the day, and are mounted on the front of the car. That is to say, this lamp is not a floodlight, not to make the driver can see the road, but to let others know that there is a car coming, is the category of lights.

According to the material of the bulb:
Can be divided into: halogen lamps, xenon lamps and LED lamps.
1.Halogen lamps
Features: Halogen lamps are cheap and widely used, but they have a short life span, usually several hundred hours.
2.Xenon lamp
Features: Xenon bulbs are modified parts. Xenon bulbs have two significant advantages: on the one hand, xenon bulbs have three times the light intensity of ordinary halogen bulbs, but consume only two thirds of their energy; on the other hand, xenon bulbs The use of almost the same light color as daylight creates better visual conditions for the driver. Xenon lamps provide a wider range of light and greater light intensity, which greatly improves driving safety and comfort.
Xenon lamp models can be divided into three types: H series, 90 series and D series. Common lamp types are H1 \ H3 \ H4 \ H7, etc., you must choose the correct model when replacing.
3.LED lights
Features: LED lights have a small size, low energy consumption, low heat dissipation, long service life, and rich colors, which meet the different needs of car light modification fans.
Generally, the low-priced car's original lamp configuration is low. It is recommended to upgrade after a certain period of time to ensure the lighting effect of the lamp and ensure safe driving.