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Expertise Of LED Modules. Chinese Lanterns

2024

Video: Expertise Of LED Modules. Chinese Lanterns

Video: Expertise Of LED Modules. Chinese Lanterns
Video: DIY lamp restoration with cheap China cold and warm white LED modules. Easy! 2024, March
Expertise Of LED Modules. Chinese Lanterns
Expertise Of LED Modules. Chinese Lanterns
Anonim

Markets and shops were literally filled with red, yellow, green and other shades of joyful LED glow "Made in China" …

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And now about the more serious. Inertialess and therefore very reliable "LED bulb", in addition to the pluses, has also disadvantages. The main one is a narrow radiation pattern. The question immediately arises: is it possible to use it as a replacement for a conventional lamp in the rear lights of a car? This we decided to check at the NIIEAE. In stores and in the market, several samples of “miracle products” of red, yellow, blue and green were purchased, but at first the experts did not even want to undertake: they say that to test them is clear. I had to insist …

The tests were carried out as follows: yellow and red LED modules were installed in the VAZ 2112 serial lamp instead of the standard P21W bulbs and light distribution was measured in the areas of the direction indicator, fog lamp and brake signal.

Soon, everything became clear and understandable. Blue and green should not be used in principle. The luminous intensity of the yellow and red LEDs in the main (central) area of the direction indicator lamp and fog lamp turned out to be ten times lower than normal, and about seven times in the braking signal. Such indicators of LED modules are explained, as expected, by a narrow radiation pattern, when even the glass of a flashlight becomes a serious obstacle to their light flux!

Experts concluded: a simple replacement of an incandescent lamp with an LED module in serial lights dramatically reduces the car's driving safety due to a decrease in the signal luminous intensity and its timely perception by traffic participants!

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