LED car lighting usage increased by 70%

With the development of the automobile industry, the advancement of science and technology, the emergence of new light sources and the aesthetics of people, automotive lighting has been continuously improved, the structure is more and more complex, the process is more and more sophisticated, and the functions are more and more perfect. Modern car lamps have become a beautiful craft with high-tech connotations, and are a pair of beautiful "big eyes" of cars. The evolution of automotive luminaires has gone through four stages, and the emergence of the fourth generation of LED automotive light sources has had a profound impact on the transformation of automotive luminaires.

Enter the third and fourth generation light source period

There are cars in the world that have lights. Automotive lighting can be divided into two categories: lighting devices and indicating signal devices. The function of the lighting device is to illuminate the road ahead of the car in the dark. There are headlights, front fog lights, reverse lights and license plate lights, which can include interior lights, instrument lights and luggage lights. The function of the signal device is to indicate to other road users the presence and driving state of the vehicle, such as turn signal lights, brake lights, position lights and rear fog lights. There are lights and specifications and standards for the lights, which are stipulated for the light source, light color, light intensity, light shape and installation position of the lights.

The heart of automotive luminaires is the light source, and the evolution of automotive luminaires occurs with the change of automotive light sources, generally through the following four stages:

The first generation of car light source is directly burned by fuel (candle, kerosene or acetylene), which can meet the requirements of early car lights, but has obvious shortcomings such as low luminous efficiency, weak light intensity, unstable performance and complicated operation.

The second generation of automotive light sources are incandescent lamps. In 1879, Edison invented incandescent lamps. In 1913, the United States first applied incandescent lamp technology to Cadillac automotive headlights. The automotive lamps have undergone revolutionary changes, and since then, automotive lighting has entered the electrical age. Then, new technologies such as car mirrors, starters, generators and batteries emerged. In 1925, cars began to enter the era of incandescent lamps. Tungsten halogen lamps appeared in the 1950s, and it quickly became the main light source for strong light sources. Shandong Luming Electronic Technology Co., Ltd. is a company specializing in automobiles. The main production and operation: truck waterproof lamps and car drive recorders and other products. The company provides truck waterproof signal lamps: LED series waterproof taillights, waterproof side lights, waterproof license plate lights, fog lights and other products with high brightness, shock resistance, waterproof, dustproof, underwriting for one year (not broken in half a year can be replaced After six months, there are quality problems that can be guaranteed, 99% of the year is not bad. The terminator of the light fine, won the praise of the driver master transportation company and the owner. QQ TEL

The third generation of automotive light sources is a gas discharge lamp (HID). It has the advantages of high luminous efficiency, high brightness and high reliability, and will replace incandescent lamps and tungsten halogen lamps as the light source of new automotive headlamps.

The fourth generation of automotive light sources are semiconductor light emitting diodes (LEDs). The LED is a semiconductor PN junction diode. When a forward bias is applied across the PN junction, the PN junction system is excited, and the carrier transitions from a low energy state to a high energy state. When the carrier is in a high energy state, the unstable carrier is back. When the low energy state is combined, according to the principle of energy conservation, the excess energy will be released in the form of photons, which is the principle of LED electroluminescence. It does not illuminate the object by heat, it is converted directly into light by electric energy, so it is called cold light. The wavelength of the luminescence depends on the difference in energy of the carriers, that is, the difference between the high energy state and the low energy state.

The emergence of LED light sources will erupt another revolution in lighting, which is epoch-making, and it has and will further affect the transformation of automotive lighting.

Due to the development of semiconductor technology, especially microelectronics technology and semiconductor light-emitting technology, the automotive lamps have entered the third generation (HID) and fourth generation (LED) light sources. At the same time, an adaptive headlamp control system (AFS) consisting of sensors, processors and actuators emerged. The emergence and formation of HID, LED and AFS new automotive luminaires and luminaire control systems have created tremendous opportunities for electronic components.

HID lights speed up to become standard

With the rapid extension of the world's highway network, the speed of the car is increased, and for the safety of the car, higher requirements are imposed on the illumination and the service life of the lamp source.

As the degree of electronicization of automobiles continues to increase and the amount of electricity used in automobiles increases, the use of energy-saving light sources, especially the reduction of the power consumption of headlights, has become a top priority. As car competition becomes more intense, there is a need for a smaller, brighter headlamp to meet the ever-increasing launch of newer cars that are more modern, comfortable, luxurious and environmentally friendly. The miniaturized HID automotive light source has become the preferred development project.