Anti-fog performance verification device for automobile lamp design

Abstract

The invention discloses an anti-fog performance verification device for automobile lamp design. The anti-fog performance verification device is characterized by comprising a shell, and a lampshade isarranged on the shell; a turnup is arranged on the lampshade, a decorative ring corresponding to the turnup in shape is arranged in the lampshade, a gap is formed between the decorative ring and the turnup, an installation hole is formed in one side of the gap, the installation hole is communicated with a wind speed measuring instrument, an air hole is formed in one side of the shell, and a flow guide plate and an air inlet hole are formed in the bottom of the shell. According to the invention, the gap between the decorative ring and the lampshade surface can be tested and verified in the vehicle lamp design stage; the ideal airflow velocity for dissipating fog is obtained through the influence of the angle of the flanging of the lampshade and the distance between the inlet and the outletin the upper end and the lower end of the decorative ring on the airflow velocity, so that the fogging risk of the automobile lamp assembly is effectively reduced, the use performance of the lamp is improved, and the automobile lamp fogging problem is prevented and controlled.

Description

technical field [0001] The invention belongs to a verification device for the anti-fog performance of vehicle lamp design, and belongs to the technical field of motor vehicle lamps. Background technique [0002] Automobile headlights are an important part in the field of automobile safety technology, and have great significance to driving safety. [0003] In the daily use of automobiles, it is sometimes found that there is fog or water droplets condensation inside the exterior lamps of the automobile, especially on the inner surface of the light distribution mirror. big impact. At present, most automobile lights use light bulbs as light sources, and the lamp housing, lamp cover and bezel are all made of plastic, so they have the characteristics of low cost and light weight. However, when the car lights are working, there will be high-temperature areas and cold areas after the light source is turned on. If the heat cannot be dissipated evenly, it will affect the service lif...

AI Technical Summary

Problems solved by technology

However, when the car lights are working, there will be high-temperature areas and cold areas after the light source is lit. If the heat cannot be dissipated evenly, it will affect the service life and performance of the surrounding parts.

When the temperature difference of the lamp is large, fog will be generated on the inner surface of the lampshade, especially the area where the airflow is not smooth at the sharp corner of the lamp is a high-incidence area for fogging. Fogging of the lamp will not only affect the appearance of the lamp, but also affect the driving Safety poses a huge hidden danger

[0004] The problem of car light fogging is a problem in the automotive industry at present. The current measures to solve the problem of car light fogging in the industry mainly include adding anti-fog coating on the surface of the lamp cover, adding desiccant inside the lamp, and opening air holes in the housing, but none of them can Fundamentally eliminate the existence of fog, and there will be a risk of water accumulation in the lamp for a long time, which seriously threatens the service life of the lamp bulb and the safety of the circuit in the lamp

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