HB LED will gradually replace the current bottleneck of HID is heat dissipation and high prices

At the Beijing auto show in 2010, BMW showed a Gran Coupe four door coupe concept. Gran Coupe deliberately created in the night under the design atmosphere appeared, the visual center of gravity naturally fell in the shape of its sharp led headlights. More than BMW, Mercedes-Benz, Audi, Lexus also launched a variety of models equipped with LED headlights. Audi released from the first paragraph of the use of LED headlight R8 has more than 2 years, known as the fourth generation of automotive lighting source LED are emerging high-end models.

BMW Gran Coupe four door concept car LED headlamp.

Automotive light plays an important role in the field of lighting, its output accounted for about 10% of the total output of lighting source. If all the lights of a car into LED, about 400 to 600 LED. In fact, as early as 10 years ago, LED on the journey to enter the automotive field. At present, the proportion of LED in the vehicle interior and exterior lighting source has exceeded 80%.

Environmental protection and durable LED headlights horizon

And headlights for LED, has always been a hard nut to crack. Because of the problem of illumination distance and brightness, LED is rarely used for headlamp lighting.

Tony Armstrong: by use of high efficiency drive can effectively deal with the problem of heat

"There is no doubt that most of the car headlights are still incandescent lamps. "Technology products marketing director Tony Armstrong said frankly," but this advantage from now suffers from high intensity discharge lamps (HID) and high brightness (HB) LED headlight pressure. HID lights in the late 90s of last century was first used as a car headlight. However, the production and manufacture of this lamp is very expensive, so their use has been limited to high-end cars.

"At present about 15% of the new car is equipped with HID. "Semiconductor automobile product marketing engineer Paul Decloedt estimates. However, due to the HID light output is too strong, close to the car, pedestrians pose a dazzling risk.

In addition, HID high voltage of 35 thousand volts to start instantly, may interfere with car audio appliances etc.. According to the owner of the xenon lamp, xenon lamp in the fog and snow weather penetration is relatively poor. Paul Decloedt said: "did not think how much difference and halogen lamps. "

So Tony Armstrong HB LED is more optimistic, he believes that HB LED will replace HID in the headlights. He said: "HB LED headlights in the next 10 years will be a very high growth rate. "

The main bottleneck of Paul Decloedt:LED headlights and front light is thermal management

Is not difficult to find, LED headlights appear mostly in high-end vehicles, especially cars are more common. Paul Decloedt said: "the use of LED headlamps can get more changes in vehicle styling. "Because the LED headlight is more compact than the incandescent lamp and HID, the overall design of the car can also be more linear. Paul Decloedt further pointed out that "compact" is not only LED the lamp itself is smaller in size, optical components and electronic circuit with LED and corresponding weight.

LED in addition, there are many other advantages, such as instant conduction, does not need preheating, it is easy to control the brightness etc.. In addition, do not forget LED broke into the lighting industry killer - long life. Because of the long service life of LED, the problem of replacing the head lamp is eliminated.

Automotive sector energy saving wind blowing Sheng, the appearance of LED was in line with the green and efficient environmental requirements. "LED is a green light source, the spectrum of the monochromatic good, there is no excess infrared, ultraviolet spectroscopy, excluding harmful substances mercury, radiation is also very little. Shenzhen secomtel Co. Ltd. Senior Application Engineer Liu Wei said, LED light source has a higher lumen, and LED is a solid state lighting, and HID lights, no quartz glass wearing a movable member, has excellent seismic fault, is very low, almost no maintenance.

LED headlight brightness is still controversial

In standard LED headlight Lexus RX450h forum, is hot RX450h LED headlamp. "Even in front of the sound of the car's bumper, the tangent is also a very light blue light, and even my headlights are better than the rest of the identification of it. "A netizen Lu Yu RX450h describe the actual effect of LED headlamp. And another RX450h owners refuted the road, as long as the owner is to open the RX450h must be very clear, LED headlights super bright, very focused, although it does not seem too bright side. LED than the HID light source is also concentrated, especially the traffic lights to stop the car in front of the bumper along the very bright, very safe and very bright mountain road. "The original owners for double B fans (BMW, Benz), since the Lexus transform.

For performance comparison of LED and HID headlights, more good find two cars factory equipped with HID and LED headlights in the evening 17:30 test models. In the distance from the cement wall 20m test results show that, LED headlights brighter than HID, but a little back LED is not as good as HID headlights.

LED light output per unit consumption of electrical energy generated is higher than incandescent bulbs, but a single LED light output ratio, LED advantage is less prominent. In order to get enough brightness, it is necessary to use LED module lighting. "A LED module is not able to provide enough light for high beam and near light. Therefore, you need to use multiple LED modules for each near light and high beam. "Paul Decloedt pointed out that since the car headlights are beam applications, each LED module requires an optical component (lens or reflector). "This is a main reason for the LED beam lights and high beam price is still more expensive. In addition, because of the characteristics of LED modular lighting