In Japan, began to make luminous license platesDecember 6, 2019
For this country, such car license plates are not a new experience. The first luminous tablets appeared in Japan back in the 1970s. They were common in northern areas, where motorists experienced visibility problems due to snowfalls and frequent fogs.
In Japan, the luminous license plates were revived. The first car numbers with this feature appeared here in the 70s. They used ordinary incandescent bulbs, but with the development of LED technology, LEDs took their place. Active work in this direction is carried out by CGS, which boasts a wealth of experience in the field of LED technology. She was entrusted with the project of creating license plates for cars with internal LED-backlight. The first thing that Japanese specialists had to decide was to increase the life of the diodes, since one of the main requirements for the numbers of the new sample was their durability.
In everyday life, we encounter LEDs whose service life does not exceed 20 thousand hours. The CGS decided to increase this figure. To do this, it was necessary to eliminate the overheating of the elements, which, as is known, reduces their service life. The Japanese came up with a special arrangement of diodes, and copper was used to improve heat dissipation in the coating of the plate.
All this helped to ensure that the working R-Ray diodes are only 6.5 degrees warmer than the environment. For 100 thousand hours of operation, they lose only 3% brightness.
Another requirement that needed to be observed was the uniformity of the glow. In this, the technology used in the production of LCD TVs helped CGS specialists. To ensure that each symbol shines with the same brightness, a backlight and a special diffuser were used. An ideal indicator of one has not yet been achieved. The unevenness index here is 1.7. This is less than in household appliances, where it varies from 2.4 to 7.1.
For a set of such luminous license plates you will have to pay 24,000 yen. At the same time, the company promises free repair or replacement of the number without limiting the warranty period. So much at CGS are confident in their technology.
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