From halogen to LED car lighting development full analysis

The development of automotive lighting has gradually evolved to another level. In addition to the basic lighting, decoration has become another function. Of course, the ever-changing, the most fundamental of the car headlights is the illumination from the previous halogen. From the headlights to the later Xenon headlights, and now to the current LED lights, the lighting effects and matching decorative effects are more and more prominent.

Different types of vehicles are equipped with different types of car lighting, which makes it intuitive to understand the importance of lighting. Macroscopically speaking, it is an indispensable part of the car driving process. On the micro level, it is even more Reflecting the identity and status of a car, this issue we will focus on car lighting, I hope to help you choose and modify.

Car 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, license plates. Lights and so on. The width lamp is used to display the width and length of the vehicle at night; the parking light is the directional light switch after the ignition is turned off, indicating the parking position; the turn signal is turned on when the vehicle is turning, intermittently flashing to indicate before and after The left and right vehicles and pedestrians pay attention; the brake lights are used to inform the rear car, the front car should slow down or stop; the fog lights can help the driver to improve visibility when driving in the fog, and can ensure that the opposite car is found in time, Take measures to safely drive the car; the low beam and high beam lights are night lighting systems, and the low beam illumination angle is downward to avoid direct illumination of the opposite driver and pedestrian.

The car lighting described above belongs to the external lighting of the car. The external light color is generally white, orange and red.

Automotive lighting also includes internal lighting, more common ceiling lights, reading lights, luggage compartment lights, door lights, step lights, instrument lighting, work lights, instrument panel warning lights and so on. Cars and trucks generally only have one ceiling light. In addition to being used as interior lighting, it can also be used to monitor whether the door is reliably closed. In the state of monitoring the door, as long as the door is not reliably closed, the ceiling light will be bright. . The power is generally 5-15 W. The bus ceiling light has a tendency to develop toward fluorescent lamps; the reading lamp is installed at the front or the top of the passenger seat. When the light is collected, the occupant does not dazzle the driver, and the illumination range is small. There are also optical axis direction adjustment mechanisms.

The luggage compartment light is installed in the trunk of the passenger car or passenger car. When the trunk lid is opened, the light automatically illuminates to illuminate the space inside the luggage compartment. The door light is installed at the bottom of the inner side of the car's exterior door. When the door is opened, the door light is illuminated to inform the pedestrians and the vehicle to avoid it; the step light is mounted on the steps in the passenger door of the large and medium-sized passenger car, and the occupant is opened at night. When the door is illuminated, the pedal is illuminated; the instrument lighting is installed on the opposite side of the instrument panel to illuminate the meter pointer and the scale plate with a power of 2W.

The instrument light is generally connected in parallel with the position light and the license plate light. Some car instrument lighting lights can be adjusted; alarm and indicator lights, common organic oil pressure warning lights, water temperature warning lights, charging lights, turn indicators, high beam lights, etc., alarm lights are generally red, yellow The indicator light is generally green or blue; the work light is a kind of on-board low-voltage lighting tool that can be moved and used during vehicle maintenance, and the power source is from a car generator or a battery. The power is generally 21W, often with hooks or clamps, plugs are a little cigarette type and two-column type.