High Intensity
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| I'm starting to notice some LED streetlights in my area are going from a bright white (about 4000k or so) to a greenish white (about the same color as a clear MV lamp, if not, worse) and i'm wondering why. My only guess as of yet is phosphors deteriorating in some of the LEDs.
Also, this does not appear to be happening in all of the LED streetlights i've seen, for example the Leotek LED streetlights around were i live are still put off the same color light as they did 2 or 3 years ago.
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« Last Edit: March 20, 2018, 06:38:12 AM by High Intensity »
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Michael
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| Yes I noticed the same on canopy lights at a petrol station. Here the LED installation dates back to 2011. Not only the phoshor degrades but also the lenses tend to yellow after a couple of 1000 hours.
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tolivac
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| Not just me seeing this change-the LED parking lot lights at the new WalMart in Greenville are doing this change from blue-white-to green white.GE Evolve.Sort of like this better than the Blue white-what color change will be next?
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dor123
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I've seen here LED lanterns with a greenish color similar to mercury lamps, but I think that they were such to begin with: https://www.lighting-gallery.net/gallery/displayimage.php?pos=-127610 |
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.
I only working with the international date format (dd.mm.yyyy).
I lives in Israel, which is a 220-240V, 50hz country.
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589
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Tha SOX MADMANNN
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| I've seen some gas stations where the LEDs have turned a greenish yellow.
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dor123
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.
I only working with the international date format (dd.mm.yyyy).
I lives in Israel, which is a 220-240V, 50hz country.
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lightinglover8902
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Power distributor: CenterPoint Energy. 120V 60Hz
 
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| I seen that too, by a near by Shell gas station. I think its the heat that deteriorates the phosphors.
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Save the Cooper OVWs!! Don't them down by crap LED fixtures!!!
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WestinghouseCeramalux
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I'm starting to notice some LED streetlights in my area are going from a bright white (about 4000k or so) to a greenish white (about the same color as a clear MV lamp, if not, worse) and i'm wondering why. My only guess as of yet is phosphors deteriorating in some of the LEDs.
Also, this does not appear to be happening in all of the LED streetlights i've seen, for example the Leotek LED streetlights around were i live are still put off the same color light as they did 2 or 3 years ago.
From what I've heard, the problem is that the phosphor separates from the blue LED and will give off a funky color. Some become blue while others become yellow. (There's some BetaLED cobra-heads near me that were installed in 2009 doing this.) |
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High Intensity
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| Most of the streetlights i've seen changing color are those BetaLED streetlights.
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« Last Edit: June 16, 2018, 11:49:19 AM by High Intensity »
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takemorepills
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| The Winco near my home has yellow-green LED lighting in the parking lot, it has been that color since new a few years back, hasn't become worse. And they are damn bright! I was thinking they were over-driven, but they seem consistent a few years later.
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