Nowadays, the headlights of major brands have LED headlights, Xenon headlights and halogen headlights. What are the advantages and disadvantages of these various types of headlights? Next, I will talk to you about this topic about headlights.
First talk about the characteristics of halogen headlights:
First point: Halogen bulbs have no startup delay and will turn on when they are turned on. They are not as slow as xenon headlights.
The second point: Halogen headlights have better penetrability, such as foggy days.
The third point: halogen headlights are yellowish and not bright enough
The main models of Xenon headlights are basically Xenon headlights. What characteristics does he have?
The first point: high brightness, generally 55W halogen lamp can only produce 1000 lumens of light, while 35W xenon lamp can produce 3200 lumens of glare, brightness is increased by 300%, with a wide and super wide-angle wide field of vision, bringing you unprecedented Driving comfort; let the night no longer dark, clearer vision, can greatly reduce the traffic accident rate.
Second: Long life HID Xenon lamp is illuminated by electronically excited gas. There is no tungsten wire, so the life is longer, about 3,000 hours, which greatly exceeds the total number of hours the car is driving at night. The halogen lamp is only 500 hours. The power-saving Xenon lamp is only 35W, and the 55W halogen lamp emits more than 3.5 times of light, which greatly reduces the load on the vehicle power system and saves 40% of power loss, which improves vehicle performance and saves energy. The color temperature is good, 4300K-12000K, etc., 6000K is close to daylight, and is well received by the majority of users, while the halogen lamp is only 3000K.
Third: The relatively safe xenon lamp is thrown into the water to work as it is, and there is no short circuit caused by soaking water or moisture.
LED headlights The latest car headlight product, the first one for the high-end brand: the response speed is based on the brake light and the direction indicator tube, assuming a vehicle speed of 125 km / h, that is 35 m / s When the incandescent lamp has a hot start time of about 250 milliseconds, the fast-reacting LED can issue a brake warning about 8 meters earlier, thus effectively avoiding a car collision. The same is true for the indicator light.
The second point: Another key feature of directionality is the way LEDs are illuminated. Unlike incandescent lamps, LEDs emit light through only one surface, which is good for headlamps and aeronautical light applications, but may not be suitable for other lighting applications.
The third point: reliability and service life The expected life of the LED is 50,000 hours, while the tungsten halogen lamp is 20,000 hours and the tungsten incandescent lamp is 3,000 hours. Compared with incandescent lamps, LEDs are structurally strong and are not susceptible to vibration. The brightness of the light output during use is not significantly reduced. Lighting solutions based on multiple LEDs also have the "redundancy" benefit, and even if one LED fails, the lighting can continue to be used.
Summary: At present, halogen headlights are mainly used in some low-end brands and some special models, such as land cruisers. The use of the environment is relatively special and requires better penetration. The mainstream recommendation is Xenon headlights because the price is cheap. Conditional or LED is the best. Xenon headlights and LED headlights have different illumination principles. Xenon headlights are headlights that use high pressure to illuminate the inert gas inside the lamp, and LEDs are headlights that energize the light-emitting diodes (ie, LEDs). In contrast, LED headlights have low energy consumption, fast response, long life, and easier to implement some personalized functions (such as automatic high beam), which is the future development direction. At present, the cost problem is not popular enough. . Mercedes-Benz S-class, Audi A8 and other luxury cars now have full LED headlights, I believe that in the future, the low-end models will gradually become popular after the cost reduction.
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