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#1
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Orange? I have yet to see any LED (or other type) street light turn orange, even if the bulb is quite old. The streetlights in my area are on from dusk to dawn, seven days a week, so I would have expected to see at least one of those bulbs to be changing color (with some of them having failed) by now. I live on the main street of a village in northern Ohio, have been here 21 years, but I have yet to see any of the street lights change color. In fact, until I read the posts in this thread, I did not think it was possible for street lights to literally change color, unless there is something about LED or sodium street lights which would cause this once the bulbs are a certain age. I realize these bulbs last only X number of years; however, I wonder if the color change as the bulb ages is actually a sign that the bulb is about to burn out. If so, it would make perfect sense to me that these bulbs would be on their last legs after 10-20 years and would noticeably change color shortly before failing. The bulbs in your area must be slightly different if they turn dark blue, while most others are bright white.
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Jeff, WB8NHV Collecting, restoring and enjoying vintage Zenith radios since 2002 Zenith. Gone, but not forgotten. Last edited by Jeffhs; 03-28-2022 at 11:07 PM. |
#2
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By "orange" I think Electronic M probably meant warm white (is that correct, or really orange?).
Regarding failure: White LEDs consist of a blue LED chip with a phosphor to fill in the rest of the spectrum. It is possible for the phosphor to degrade over time, changing the color of the light somewhat. Some white LED backlight strips for LCD monitors/TVs have shown a failure mode in which some individual LEDs become dark blue. This has been discussed online (here or on YouTube, I don't recall), but I have not seen an explanation of the failure mechanism. |
#3
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Here in the Netherlands it does go wrong, LED street lighting changes color. Street lighting here with the option of various light colors, white to amber. Sometimes when the settings are lost you get different light colors in the street. Filters also come loose, causing the blue light to reach the street. With mercury and sodium you will get few color deviations, only at start-up.
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#4
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jr |
#5
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This is a separate option, so not in all fixtures. With a computer you can control the strength of the light between the amber and the white LEDs.
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Audiokarma |
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#7
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#8
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Question: do they ever change the color by time of night, for example, whiter for better visibility in the early evening traffic, then amber for sleeping hours?
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#9
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Here in the Netherlands there are streets in the evening and in the morning where the fixtures give white light and at night to amber. These can be programmed, but can also be controlled remotely via wireless telephone network. It is an expensive system, which means that it is not widely used. In a village nearby, the street lighting is mostly set to amber during the Christmas season.
There is much more. https://www.youtube.com/watch?v=a-WvawLns6c Last edited by marcel; 03-30-2022 at 01:27 PM. |
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L.E.D., per se, it isn't crap. But some administrations are choosing the cheap ones, sometimes this meaning not only bad qualty, but also ugly color temperature. I don't know why they are so stupid.
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Audiokarma |
#11
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science knowledge. Also no understanding of the common man. 73 Zeno LFOD ! |
#12
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The big problem with LED here is a lot of the cheap ones don't survive. They'll start out bright with a good color temperature then within a year they'll start turning blue or purple....Throw in some fog and suddenly night driving has an unwelcome horror movie aesthetic.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
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So poor qualty of them is a problem in U.S.A. too...
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