Author Topic: LED streetlights showing their age  (Read 334 times)
Zarlog
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LED streetlights showing their age « on: September 15, 2016, 08:26:54 PM » Author: Zarlog
Some of the LED streetlights on the freeways that were installed in 2013-2014 are starting to become really dim. I remember when they were new they were much brighter than the HPS lights in the next section, and now they are only about as bright as 175w /DX mercs. The HPS lights are noticeably brighter now. These I thought would last longer because they have several small diodes spread over a large surface, not 3 high power diodes on a tiny surface (like the new ones they are installing.) What will they do when they become so dim they are unusable?
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Re: LED streetlights showing their age « Reply #1 on: September 15, 2016, 08:34:25 PM » Author: wattMaster
I noticed that the LED streetlights here actually look very bright, but I have seen a couple of failures where the LED array just periodically flashes.
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Re: LED streetlights showing their age « Reply #2 on: September 16, 2016, 01:49:26 AM » Author: Ash
They all look very bright because the light source emitting area is tiny
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Re: LED streetlights showing their age « Reply #3 on: September 16, 2016, 06:41:04 AM » Author: wattMaster
I thought that the light on the ground/road was bright.
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Re: LED streetlights showing their age « Reply #4 on: September 16, 2016, 09:04:01 AM » Author: Solanaceae
LEDs that are almost a year old here are green and dim. Lol, so much for high lumen maintenance. Tongue
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Re: LED streetlights showing their age « Reply #5 on: September 16, 2016, 10:46:08 AM » Author: mdcastle
Which LED lights?
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Re: LED streetlights showing their age « Reply #6 on: September 17, 2016, 09:49:51 AM » Author: Zarlog
Which LED lights?
The ones that are stick-shaped. I can get a picture next week. The difference is quite noticeable.
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Lightingguy1994
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Re: LED streetlights showing their age « Reply #7 on: December 17, 2016, 10:58:15 PM » Author: Lightingguy1994
I have noticed some LED streetlights here getting a bit on the dim side as well. The biggest most noticeable ones are the gross yellowed out LED canopy lights on gas stations installed where MV/MH once were
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Re: LED streetlights showing their age « Reply #8 on: January 23, 2017, 03:30:59 PM » Author: lights*plus
Generally speaking, if you don't have a light-meter or a lux-meter to measure the light levels, and at the same time write them down, you're talking out of your sinus.

I have documented proof that new LED street-light systems are very typically brighter than the former HPS. Conversly, most parking or lot-lighting LEDs provide less lighting on the lots. In the near future, I'll be comparing the before lux levels to the burned-in levels to see how well the LED systems really perform.
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