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Driving on the road all year round, especially at night, I often encounter the dim or "one-eyed" lights of some cars, but also our own cars suddenly dim or do not light. what's going on? Is it the quality of the bulb or something else?

Automobile LED headlights supplier to share with you: In fact, as a car lamp, it also has a "life", or a usage decay period of working conditions. The brightness will gradually decrease during long-term use, and eventually become dim or even not bright. These are the times when the lights need to be replaced.

So how long can our car lights last, and how long do they last? Let's talk about different automotive LEDs.

The most common are halogen headlights, which are also the longest in service in automotive history. The basic luminous principle of the halogen lamp is the same as that of the incandescent lamp. Both of them conduct sufficient current to the tungsten wire to heat the filament to the incandescent state and emit light.

The difference is that the small quartz glass case of halogen lamps is filled with halogen element iodine or bromine gas. The presence of these halogen elements can reduce the loss of tungsten filaments at high temperatures, extend the life of the filaments, and make the filaments work higher. Temperature, so as to obtain higher brightness, color temperature and luminous efficiency. At present, the headlights on most economical family cars are halogen lamps.

Longer life is due to the addition of iodine and bromine into the bulb. The tungsten wire will sublimate into a gas when it glows and is heated. The sublimed tungsten wire will react with the two halogen gases, iodobromide, and eventually become tungsten wire. In this way, the tungsten wire will not easily burn out. . Therefore, it is not a problem for our current halogen headlamps to accumulate 300 hours.

Therefore, when changing the halogen headlights, it is required to carry out construction with gloves, because the grease on the fingers left on the glass surface of the bulb will cause the temperature to vary and easily burst.

The advantage of halogen lamps is that the production technology is mature and the cost is relatively low. Therefore, there are still many models in assembly today, but the disadvantage is that the brightness is not enough. So many partners are willing to upgrade halogen lamps in the later stage. Such as upgrading xenon lamps

The principle of the xenon lamp is to fill the crystal quartz glass tube with xenon gas (filled with iodide, and instantly boost the 12 volts DC voltage to 23,000 volts through a supercharger, and the high voltage amplitude excites the xenon electrons in the quartz tube to be free. A light source is generated between the two electrodes, and a white super-strong arc light generated by xenon gas.

The current required for HID to work is only 3.5A, the brightness is three times that of traditional halogen bulbs, and the service life is 10 times longer than that of traditional halogen bulbs. It also reaches a power of 55w, and the power consumption of xenon lamps is half that of halogen lamps. Use can reach 3000 hours.

Our original car xenon lamp can reach the above normal service life, but it may not necessarily be upgraded and modified later. This depends on the quality of the lamp you bought, the technical requirements for installation and construction, and the reliable store can be upgraded more comprehensively. The choice and installation of ballasts will also be relatively strict.

Because the stabilizer is added in the later upgrade, the stabilizer will be an important factor that affects the service life. Ordinary upgrade and modification can not achieve the original level. Life will be longer than halogen lamps. So we must pay attention to this when choosing to upgrade, we must consider the choice of cost performance and installation technology.

Finally, we talk about automotive LED headlights. There is no doubt that the use of LEDs will become the trend of future cars. This is due to the high brightness of LEDED lamps, low power consumption, and almost no burnout. However, the price is more expensive, and less used for family cars. It is more used in high-end cars and luxury cars. Since it must be expensive, its service life can reach 60,000 to 100,000 hours. It is likely that our cars are scrapped. The lights won't break.

There are so many advantages of LED lights, but you must pay attention to changing LED lights. The heat dissipation is a problem when applied to car lights. If the heat dissipation is not good, the light decay will be very serious. Friends who want to change must design a good cooling solution.

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Being illuminated by high beams, I believe many drivers will encounter them every night. Turning on high beams when meeting or following in the city will seriously affect the sight of other drivers. Therefore, in urban areas, as far as possible, open the far light as little as possible, and the correct use of far and near light exchange is an important guarantee for civilized driving.

And sometimes these vehicles that seem to turn on the high beam are actually turned on with low beam, but its high beam is relatively high. Whether the headlights are too high or too low in daily driving is not conducive to driving safety. Let's take a look at how to adjust the height of the automobile low beam yourself.

1.The headlights are misaligned after a slight impact

2. Replacement of headlight parts causes misalignment

3.The headlight height is wrong / displaced due to other reasons

When we are driving normally, observe the height of the low beam headlights. If the tangent line reaches the position above the rearview mirror of the car in front, then the height of the low beam headlights is definitely wrong. In addition, if the dipped beam is turned on to illuminate the wall, the tangent positions of the left and right dipped beams do not coincide, then the position is wrong. The position of the standard dipped headlights is that the left and right headlights tangent coincide. The tangent of a single dipped headlight is left low and right high, instead of the so-called "left low right high" of the left and right headlights.

Of course, many people will say why not directly go to the 4S shop for maintenance adjustment. It is undeniable that this is the simplest and most effective. However, some 4S stores are relatively remote, and it is not difficult to adjust the height of the low beam. DIY is not a good idea.

It should be noted that the adjustment of the width of the light is difficult, and it is not recommended to adjust it by yourself. If the width of the light is really inappropriate due to collision or other reasons, it is recommended to go to the 4S shop for timely adjustment.

Preparation tools: adhesive tape, Phillips screwdriver or hexagon socket for marking purposes, flashlight, tape measure

Location: Underground parking white wall

First, find a clean wall, park the car about 3 meters from the wall, and measure the distance from the center of the vehicle's low-beam light to the ground. Based on the height of the low beam headlight that we measured above the ground, we used tape to set a baseline on the wall in front of the car. (The reason why the tape is set is because the tape can be easily removed after use to avoid embossing the wall.) The standard for adjustment is that the tangent is slightly lower than the mark, and the method of the left and right headlights is similar.

Find the adjustment bolts behind the headlight assembly. The adjustment bolts around many models are toothed. It is easy to judge that the parts that need to be adjusted and the tools used are different for different models, and need to be determined according to the specific model.

It should be noted that some car lights are integrated with near and high beams, so there are generally two adjustment bolts for height adjustment and width and width; while independent near and high beam headlights can adjust the height of the low and high beams, respectively. It can also adjust the width and width, so there may be 3-4 adjustment bolts.

When adjusting, twist the bolt with one hand, observe the change of the tangent position on the wall, and adjust according to the height of the mark. The tangent height of the low beam is lower than the reference line as the standard.

When adjusting led auto headlights, do not sit on the car or sit alone in the car. If the trunk is pulled with a lot of weight or the car is fully loaded, the height of the vehicle will drop a lot. There is no small effect.

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Automobile atmosphere lamps are indispensable as night lighting lamps. With the development of LED, more and more car manufacturers have adopted LED headlights as the first choice for car lights. LED car light refers to the use of LED technology for both interior and exterior light sources for external and internal lighting. External lighting equipment involves thermal limits and EMC issues, as well as many complex standards for off-load testing. LED car lights can be widely used to create the environment inside the car.

Structure of Mi2 automobile LED headlights:

A single LED is composed of gold wire, LED chip, reflection ring, cathode wire, plastic wire, and anode wire.

The core of the light-emitting diode is a wafer composed of a p-type semiconductor and an n-type semiconductor. There is a transition layer between the p-type semiconductor and the n-type semiconductor, which is called a pn junction.

In the PN junction of some semiconductor materials, the injected minority carriers and the majority carriers will release excess energy in the form of light, thereby directly converting electrical energy into light energy. A reverse voltage is applied to the pn junction, and minority carriers are difficult to inject, so it does not emit light. This type of diode made using the injection-type light-emitting principle is called a light-emitting diode, and is commonly called an LED.

The lighting process of LED includes three parts:

Carrier injection, composite radiation, and light energy transmission under forward bias.

Automotive Led Work Lights

Tiny semiconductor wafers are encapsulated in a clean epoxy resin. When the electrons pass through the wafer, the negatively charged electrons move to and recombine with the positively charged hole area. Photons are generated while the electrons and holes disappear.

The greater the energy (band gap) between the electron and the hole, the higher the energy of the photon produced. The energy of the photon in turn corresponds to the color of the light. Within the spectrum of visible light, blue light and purple light carry the most energy, and orange light and red light carry the least energy. Because different materials have different band gaps, they can emit different colors of light.

When it is in the forward working state (that is, the forward voltage is applied to both ends), when the current flows from the LED anode to the cathode, the semiconductor crystal emits different colors of light from ultraviolet to infrared. The intensity of the light is related to the current. For example, an LED is like a burger. The material that can emit light is the "meat pie" in the sandwich, and the upper and lower electrodes are bread with meat. And through the research on the light-emitting materials, people have gradually developed a variety of light color, light efficiency LED components are getting higher and higher, but no matter how changed, the overall light-emitting principle and structure of LED has not changed much.

Advantages of automotive LED work lights:

(1) Energy saving: The light-emitting diode directly converts electrical energy into light energy. The power consumption is only 1/10 of that of traditional lamps, which can better reduce fuel consumption and protect automobile circuits from being burned by excessive load current.

(2) Environmental protection: There is no ultraviolet and infrared in the spectrum, there is no heat generation, no radiation, little glare, and the waste is recyclable, contains no mercury elements, no pollution, and can be safely touched. It is a typical green lighting source.

(3) Long life: there are no loose parts in the lamp body, and there are no shortcomings such as easy burning, thermal deposition, and light decay of the filament. Under the appropriate current and voltage, the service life can reach 80 ~ 100,000 hours, which is longer than the life of traditional light sources. More than 10 times longer. (There is a replacement, the characteristics of lifetime use)

(4) High brightness and high temperature resistance. (The electrical energy is directly converted into light energy, and the heat generation is small, which can be touched by hand)

(5) Small size: The designer can change the lamp mode at will to make the car diversified. Car manufacturers favor LEDs, which is entirely determined by the advantages of LEDs themselves.

(6) Good stability: LED has strong anti-shock performance, resin package, not easy to crack, easy to store and transport.

(7) High luminous purity: clear and vivid colors, no need for lampshade filtering, light wave error is within 10nm.

(8) Fast response time: no need for hot start time, light can be emitted within a few μs, and traditional glass bulbs have a delay of 0.3s, which can effectively prevent rear-end collisions and ensure driving safety when used for tail lights.

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Нашето училище предлага курсове и частни уроци по математика в София и Пловдив. Занятията са за ученици от 1 до 12 клас. Нашите математици са се доказали през годините като професионалисти.

Oznake:
[ Spremenjeno: torek, 26. maj 2020, 12:22 ]

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## As summer is coming, the Ready for Summer 2020 event is active now on RSorder with special offers - 6% discount for OSRS gold, RS gold and all other products for everyone, and double Loyalty Points for RSorder members until May 27, 2020.

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