In the above, we explained the specific test steps for the waterproof test of the automotive optical signal device. Next, let's take a look at another way of testing the waterproof test of the car.
(1) Preparation before the test
1. The semicircular annular water spray pipe is provided with a water spray hole with a diameter of 0.8 mm and a pitch of 50 mm within ±90° on both sides of the vertical axis.
2. The radius R of the spray pipe depends on the size of the sample. The R values ​​are 200mm, 400mm, 600mm and 800mm and 1000mm respectively, from which the applicable small R spray pipe is selected.
3. The sprinkler pipe sweeps on both sides of the vertical axis at a speed of 60 ° / s, the angle range is 180 ° ± 20 °
4. The water flow rate of each sprinkler is 0.6L/min+5%, and the water pressure is approximately 400kPa.
(2) Test conditions
1. Protect the car lighting device according to the loading condition and install it on the test stand to open all the drain holes and openings. The test bench speed for installing the sample is 1r/min~3r/min;
2. The distance between the sample and the water spray pipe should be no more than 200mm;
3. Temperature 23 ° C ± 5 ° C, relative humidity 25% ~ 75%, pressure 86kPa ~ 106kPa;
4. The difference between water temperature and ambient temperature does not exceed ±5 °C;
(3) Test method
1. Fix the sample on the test bench;
2. The light distribution performance of the sample shall be checked before and after the test;
3. The test consisted of two cycles, each cycle lasting 5 min, with the sample lit for 3 min and closed for 2 min. The test was continued for 10 minutes;
(4) Result determination
After the test, the light distribution performance of the sample should meet the requirements of relevant standards.
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