Recently, the General Administration of Quality Supervision, Inspection and Quarantine announced the national supervision and spot check report on the quality of automotive lighting products. The results of the spot check showed that the automotive lighting products, which are one of the most basic and important parts of the active safety of automobiles, failed to pass the light distribution performance project and became an important unqualified item of the product. What is the light distribution performance of automotive lamps? What are the requirements? What harm does it cause if it fails? “Light distribution performance is the most important technical and quality indicator of automotive lighting products. The most basic and most important performance of automotive lighting products is their light distribution performance, which is the distribution of light emitted by automobile lamps in space.†National car quality inspection Center engineer Zhao Bin said that automotive lighting products can be divided into two categories according to their application, namely lighting devices and signal devices. According to the different needs of the driving process of the car, different functions of the car luminaires have different light distribution properties, and the distribution of light emitted in the space is different. The light distribution performance includes the light intensity distribution of each spatial region or angle within the space effective range required by the standard, and the light intensity of the different functions of the light is different for the required spatial range, spatial region and angle. According to the data, 90% of the information obtained during the driver's driving process comes from visual perception, and 25% of the total mileage of the vehicle is driven at night and under natural light, and the person who occurs between them causes personal injury. Injury driving accidents accounted for 33%, and 50% of fatal accidents occurred at night. The light distribution performance of automobile lamps directly affects the driving safety of vehicles, and is directly related to traffic safety. Therefore, automobile lamps are the main components of active safety of automobiles. In the mandatory regulations and standards for motor vehicles in countries around the world, the mandatory regulations and standards related to automobile lamps account for about 1/4 of the total number. "The poor quality of the car luminaire can not only provide good lighting for the driver, it can not achieve good signal exchange purposes, and it is easy to cause glare to other road users, causing traffic accidents." Zhao Bin, for example, if the headlights The irradiation distance and the irradiation width of the road surface are not enough. In the absence of street lighting, the driver may not be able to see the situation on the road surface and the road surface in front. It is impossible to find obstacles and non-motor vehicles and pedestrians in time, which is easy to cause corresponding Accident; if the brightness of the anti-glare area of ​​the headlights exceeds the standard, it will easily cause serious dazzling effect on the other vehicle when facing in the opposite direction, causing the driver of the other vehicle to become blind for a short time and unable to see the road ahead, thus causing a traffic accident. "There are many reasons for the unqualified performance of automotive lamps. The technical level, production process and management, quality and safety awareness are all important factors." Zhao Bin said that the headlights, rear fog lights, retroreflectors and other functions Automotive lamps require high design capabilities and production processes, and require a high level of management throughout the entire product process. Many small domestic enterprises often fail to meet product requirements in design, process, and manufacturing process control. At the same time, the production enterprises pay less attention to the quality control of manufacturing processes and product production, especially for some small and medium-sized enterprises. The production equipment is outdated, lacks professional and standard knowledge, and is shoddy, resulting in poor quality. Other enterprises are not well managed, do not implement the corresponding product standards, do not produce according to the process, and the production consistency management does not meet the requirements. Some consumers have low quality awareness and low security awareness. They only pay attention to product prices, do not pay attention to product quality, and do not realize that car light products are basic safety components of automobiles. These will directly or indirectly affect the quality of automobile lamps. Unqualified light distribution performance of automotive lamps will bring a lot of security risks, so how to avoid it? Zhao Bin said that, first of all, car users should have a good sense of safety. When purchasing vehicles, pay more attention to the safety performance of vehicles, and buy brand-name cars with well-known brands or good reputation. Secondly, in the later use of the vehicle, if the lamp is faulty or damaged, try to repair the 4S shop or purchase the regular brand lamp manufactured by the original factory. In addition, when buying a lamp product, check whether there is a 3C mark on the lamp. At the same time, in the use of the vehicle, try not to modify the lights, non-professional modification is likely to cause unqualified light distribution performance. Consumers should also be careful not to add any components to affect the light transmission of the lights. If the lights are damaged, try to buy the same type of light source from the original 4S shop or regular channel for replacement. In the normal use process, try to avoid the wear of the lamp housing, clean the cleaning lights in time, avoid the dirt of the lights and reduce the light distribution performance of the lights and increase the glare. "It is very important to use the lights correctly during normal use. If there is no serious rain and fog, do not open the rear fog lights. Use the headlights reasonably when driving in the city and when the vehicle is in the car. Switching the low beam light in time.†Zhao Bin said that there are many phenomena in which these two types of lights are not used correctly, especially the high beam abuse is extremely serious. Zhao Bin also said that when consumers purchase automotive lighting, they can roughly judge the quality of the lighting products from the appearance quality. If you carefully observe the light fittings of the lamps, there should be no high temperature deformation or excessive air bubbles. For the headlights or front fog lights, you should also carefully check whether the mirror surface inside the lamp is intact and clean. At the same time, you can use the hand to gently shake the lamp to determine whether the components inside the lamp are fixed firmly. Also, make sure that the adjustment screws behind the car headlights and front fog lamps can be adjusted normally.
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