Test device for light distribution characteristics of license plate lamp of automotive vehicle

Abstract

The invention relates to a test device for light distribution characteristics of a license plate lamp of an automotive vehicle. The test device is characterized in that: a supporting seat on a supporting mechanism is installed on a bottom plate through a supporting plate; an angle adjusting mechanism comprises a transmission, a drive rotating shaft bracket, a drive rotating shaft, a driven rotating shaft bracket, a driven rotating shaft and a rotary framework; a lamp holder mounting mechanism comprises a movable framework, an upper positioning seat, a slide seat and a license plate lamp connection seat; a longitudinal adjusting mechanism comprises a longitudinal guide rail, a longitudinal slide block, a longitudinal screw rod, a longitudinal supporting seat and a longitudinal nut seat; a license plate height adjusting mechanism comprises simulated license plates, a hoisting screw rod, a hoisting nut seat, a hoisting support, a vertical guide rail and a vertical slide block. The test device provided by the invention not only can simulate front and back positions, left and right positions and irradiation angles of each license plate, but also can simulate height positions of three license plates. As each adjusting stroke is adjustable, the test requirements on the light distribution characteristics of different license plates and different positions can be met, the test cost is reduced and the test efficiency is improved.

Description

technical field [0001] The invention relates to a light distribution performance test device of a motor vehicle license plate lamp, which belongs to the technical field of light distribution performance test of rear license plate lamps of automobiles and trailers. Background technique [0002] The light distribution performance of the rear license plate lights of automobiles and trailers is tested according to the requirements of GB18408 <light distribution performance of rear license plate care devices for automobiles and trailers>. According to the application, the rear license plates are usually divided into three types, that is, three different sizes of rear license plates Plate, through the light of the license plate light to test the multiple luminance measurement centers on the simulated rear license plate area as test points, the license plate light must be designed within the scope of the visible lighting area, and the entire lighting area can be seen from behi...

AI Technical Summary

Problems solved by technology

At present, the test of the light distribution performance of the license plate light is to test the light distribution performance of the license plate light through some special test devices, but the special test device can only simulate the license plate of one lighting area and the rear license plate light of one position. Therefore, for the light distribution test of license plate lights of different models and installation positions, multiple test devices are required, which not only results in more test devices, but also requires personnel and places to keep them, resulting in high measurement costs, especially when a license plate light is compared to different In the light distribution performance test of the type rear license plate, the license plate lights need to be installed on different test devices, resulting in a long loading and unloading auxiliary time, which reduces the test efficiency and increases the labor intensity of the testers.

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