Different types of models are equipped with different types of car lighting, so that people can intuitively appreciate the importance of lighting. Macroscopically speaking, it is an indispensable link in the process of car driving, and microscopically, it is even more A sign that embodies the identity and status of a car. In this issue, we will focus on auto lighting for everyone. I hope it will help you in your choice and modification.
Automotive lighting type
From the perspective of equipment manufacturers, automotive lighting is mainly divided into parking lights, width lights, low beam lights, high beam lights, front fog lights, rear fog lights, turn signals, warning lights, brake lights, reversing lights, and license plates. Lights and so on. The width light is used to display the width and length of the car body at night; the parking light is the parking light when the ignition switch is turned on and the direction light switch is displayed to display the parking position; the turn signal is turned on when the vehicle is turning and flashes intermittently to remind the front and rear The left and right vehicles and pedestrians should pay attention; the brake light is used to inform the rear car, the front car must slow down or stop; the fog light can help the driver to improve visibility when driving in fog, and can ensure that the opposite car is found in time to Take measures to safely drive the car; the low-beam and high-beam lights are night-time lighting systems, and the low-beam lights have a downward illumination angle to avoid direct exposure to the drivers and pedestrians on the opposite side.
The automotive lighting described above belongs to the external lamps of the car. The light colors of the external lamps are generally white, orange and red.
Automotive lighting also includes internal lamps. The more common ones include ceiling lights, reading lights, luggage compartment lights, door lights, step lights, instrument lights, work lights, and dashboard warning lights. Cars and trucks generally have only one dome light. In addition to being used as interior lighting, they can also serve to monitor whether the doors are reliably closed. In the state of monitoring the doors, as long as there are still doors that are not closed securely, the dome light will illuminate. . The power is generally 5-15 W, and the bus dome light tends to develop toward the fluorescent lamp; the reading light is installed in the front or top of the passenger seat. When the light is concentrated, the occupant will not cause dazzling to the driver when reading a book. Some also have an optical axis direction adjustment mechanism.
The luggage compartment light is installed in the luggage compartment of a car or bus. When the luggage compartment lid is opened, the light automatically illuminates to illuminate the space in the luggage compartment. The door lights are installed on the inside bottom of the open door of the car. When the door is opened, the door lights illuminate to inform pedestrians and vehicles to avoid evasion. The step lights are installed on the steps in the passenger door of large and medium-sized passenger cars. When the door is on, illuminate the pedal; the instrument illuminating lamp is installed on the reverse side of the instrument panel and is used to illuminate the instrument pointer and the scale board. The power is 2W.
The instrument lighting is generally connected in parallel with the position indicating lamp and the license plate lamp. The luminous intensity of some automobile instrument lights can be adjusted; alarms and indicator lights, common organic oil pressure alarm lights, high water temperature alarm lights, charge indicators, turn indicators, high beam indicators, etc. The alarm lights are generally red and yellow The indicator light is generally green or blue; the work light is a low-voltage lighting tool that can be moved and used during vehicle maintenance. The power source is from the car generator or battery. The power is generally 21W, often with hooks or clamps, the plug is a little smoker type and two-post plug type.
Renewal of automotive lighting
Halogen headlights
The inert gas in the halogen headlight bulb is mixed with a certain halogen element gas. The halogen bulb is small in size, the housing is made of quartz glass and hard glass with high temperature resistance and high mechanical strength, and the pressure of the inert gas is high. The halogen mixed is generally iodine or bromine. Due to the high operating temperature, the working pressure in the lamp is much higher than other bulbs. The recycling principle of halogen tungsten is also used, so the evaporation of tungsten is effectively limited.
At the same power, the brightness of halogen lamps is 1.5 times that of incandescent lamps, and the life span is 2-3 times that of incandescent lamps. Halogen bulbs are divided into four types: H1, H2, H3, and H4. Among them, H4 double-filament bulbs are widely used for headlamps, and H1, H2, and H3 bulbs are single-filament bulbs. They are often used as auxiliary headlamps (such as fog lamps and probes). Headlights).
Xenon headlights
The full name of the xenon headlamp is HID (High Intensity Discharge Lamp) gas discharge lamp. It uses a matching electronic ballast to instantly raise the 12V voltage of the car battery to a trigger voltage of more than 23KV, ionizing the xenon gas in the xenon headlight to form an arc discharge. And make it steadily glow, provide a stable car headlight lighting system. At present, xenon headlights are often misunderstood "Xenon headlights", "Xenon" xian (yinping), the same sound as "Xian", "Han" read shan four sounds (sound), and "fan" "fan" homophonic .
Xenon lamp is a new headlamp containing xenon gas, also known as high-intensity discharge gas lamp, English abbreviation HID Intensity Discharge Lamp. The xenon lamp breaks the principle of tungsten light emission invented by Edison. The quartz lamp tube is filled with a high-pressure inert gas-Xenon xenon gas, which replaces the traditional filament. There are mercury and carbon compounds on the two sections of electrodes. The current stimulates the xenon to emit light, forming a perfect white arc between the two poles, and the light emitted is close to very perfect sunlight. Compared with ordinary bulbs, xenon bulbs have two significant advantages: on the one hand, xenon bulbs have three times higher than ordinary halogen bulbs The energy intensity of the light is only two-thirds of its energy consumption; on the other hand, the xenon bulb uses nearly the same color as daylight, creating better visual conditions for the driver. Xenon lamps make the light range wider and the light intensity greater, greatly improving the safety and comfort of driving.
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