Introduction: Author: Mr. Wu talks about cars. Used car appraiser. In his early years, he worked for a well-known domestic construction machinery manufacturer for many years and has a considerable understanding of machinery, hydraulics, electrical, materials, etc.
Back to business: Nowadays, people are accustomed to buying car supplies online, such as light bulbs, engine oil, etc. What do the LED bulbs H7H1 sold online mean? What are color temperature and lumens? What's the difference between more than a thousand and more than a hundred? What are the advantages and disadvantages of halogen lamps, xenon lamps, and LED lamps? The editor shares it with everyone. So let's get started. First, there are a few steps to put the elephant into the refrigerator... Sorry, it's a bit confusing.
Okay, I’ve finished taking the medicine, now let’s officially start.
What does H7H1 mean?
H7 on the left and H1 on the right
The main difference between the two bulbs is that the H7 bulb has two terminal pins, while the H1 bulb has one terminal pin.
Generally, H1 is used for high beam and H7 is used for low beam, but there are exceptions.
H4
H4 is a double-filament (as shown in the picture, two filaments) three-pin bulb, with low beam and high beam in one bulb. For example, Swift has both far and near lights.
As for what type of bulb your car has, you can find it in your car's owner's manual. There is usually a separate page indicating the model numbers of all the light bulbs in the car.
What is color temperature?
In layman's terms, color temperature is the "temperature" of color. The lower the color temperature, the "warmer" the color is, and the higher the color temperature, the "cooler" the color is. The "colder" the light is, the brighter it appears to the human eye. The "warmer" light will appear dimmer to the human eye. Under the same wattage, the higher the color temperature, the brighter it will appear.
color temperature
Colors of light corresponding to different color temperatures
Most cars priced at 100,000 yuan now have halogen bulbs as standard equipment. Ordinary halogen bulbs generally have a color temperature of 3500K and a power of 55 watts. Through the above picture, it is not difficult for everyone to understand why the wattage of the original car lights is not low and why they look like candlelight.
What are lumens?
Lumens: A unit of luminous flux. (For the explanation of the term lumen, please search it on Baidu.) In layman's terms, it means the amount of light that passes through. The more light that passes through, the brighter it is.
Halogen lamps are 1000-1500 lumens
Xenon lamp is about 3000 lumens
LED lights are more than 4000 lumens
Of course we hope that the car lights will be as bright as possible.
What are the advantages and disadvantages of halogen lamps, xenon lamps, and LED lamps?
Because the xenon lamp raises 12V DC power to 23,000V electricity to activate the xenon gas, it forms a beam of arc light, which can continuously discharge and emit light between the two electrodes. The response time will be a little delayed, and the effect of using xenon lights to counter high-beam dogs is not very good.
What's the difference between more than a thousand and more than a hundred?
LED lights sold online range in price from tens of dollars to thousands. Of course, the quality varies at different price points. The automotive industry believes that you get what you pay for. The editor has seen a RAV4 owner who bought a pair of LED lights for 200 yuan online. Except that the color of the light is a bit whiter than the original lights, there is almost no difference in brightness. The colors of the left and right lights are also inconsistent. Car lights are a relatively profitable product. The lights generally sell for 600 yuan, and the purchase price is less than 300 yuan. Regarding the heat dissipation methods of LED lights, there are copper strip heat dissipation and fan heat dissipation. The editor believes that copper strip heat dissipation is more reliable.
Now let’s talk about the third small point of the 73rd big question...
Many car owner friends ask me whether to replace low beam or high beam. The editor believes that the street lighting conditions in the city are good, and turning on the low beam is enough. If you always drive on the highway or you have to fight back the high beam dog in the city, then replace the high beam. Nowadays, many cars have lens groups for low beam, and the effect is very good after installing xenon lamps or LED lamps. If the high beam does not have a lens, it will be a big blow to oncoming cars. Also, do not replace xenon lamps if the car is more than 5 years old, as there will be hidden dangers in the electrical circuit.
Okay, I’ve finished sharing with you about car lights. If your friends think what I said makes sense, please give me a like and encourage me.
