New LED Streetlights for NYC

[T Badd]

Saw this article and thought of Patric.

http://www.wired.com/culture/design/magazine/16-12/st_streetlamp

Looks pretty promising. Customizable directional patterns, 30% less energy, twice the lifespan of HPS and upgradeable as the technology improves.

Wonder when we'll see something like these in Tulsa?

[Red Arrow]

The illustration looks good.

[patric]

quote:Originally posted by T Badd

Saw this article and thought of Patric.

AAck, I posted the link to the PlaniTulsa section before I saw your posting.
These are promising, but not all LED's are created equal.  We would want to avoid LED's with a color over about 3000 Kelvin because of their high blue content, otherwise we end up with the garish gray landscapes you get with the high-maintenance Metal Halide lights.  
Color temperatures around 3000K give you something closer to the warmer, more inviting incandescent look.

[sauerkraut]

The cost of the change-over will be great. NYC is broke.[B)]

[polly.karim6]

The maintanences obviously would be high for these lights as well, unless there are readymade backups. These LED lights are however not much common in the other parts of the world yet. I have travelled to a few countries but havent found them anywhere yet.

[patric]

quote:Originally posted by polly.karim6

The maintanences obviously would be high for these lights as well, unless there are readymade backups. These LED lights are however not much common in the other parts of the world yet. I have travelled to a few countries but havent found them anywhere yet.

One of the advantages of LED lighting is their LOW maintanence, due to their longer life.

[Gaspar]

I like them.  The replacement elements are $800 each, but if they work as advertised, they should last for 17 years.  That said, I have had several LED flashlights for fishing and hunting.  High dollar ones too.  They claim that the bulbs last for 5 years of continuous use.  I've had to replace several of them.  Perhaps it is the environmental conditions or being banged around in tool and tackle boxes, but they don't seem to last as advertised.

I'd make sure that NYC gets a 50,000 hour warranty.

[sauerkraut]

quote:Originally posted by Gaspar

I like them.  The replacement elements are $800 each, but if they work as advertised, they should last for 17 years.  That said, I have had several LED flashlights for fishing and hunting.  High dollar ones too.  They claim that the bulbs last for 5 years of continuous use.  I've had to replace several of them.  Perhaps it is the environmental conditions or being banged around in tool and tackle boxes, but they don't seem to last as advertised.

I'd make sure that NYC gets a 50,000 hour warranty.

I think you nailed it, LED's have to be treated with TLC or they will fail. You cannot be ruff with them in a flashlight- they are like eggs one good hard drop will kill them. I have a low-end LED flashlight from Wal-Mart 3 years old and it's still working but I'm careful with it. I bought some LED's in Christmas lights for half price I'll use them next year.

[nathanm]

As with LED stoplights, a large part of the advantage is that while an individual LED may stop working, there are still many others in the array functioning, so it doesn't need to be replaced immediately.

And don't discount the savings in power. They're vastly less expensive on that front.

I really wish Tulsa used less ****ty streetlights.

[patric]

quote:Originally posted by sauerkraut

I think you nailed it, LED's have to be treated with TLC or they will fail. You cannot be ruff with them in a flashlight- they are like eggs one good hard drop will kill them. I have a low-end LED flashlight from Wal-Mart 3 years old and it's still working but I'm careful with it.

You have it completely backward.
An LED is a solid-state chip completely encapsulated in solid plastic.  I have pounded LED's mercilessly and they still function.



The same cant be said for light bulbs, with fragile filaments balanced on wires inside a delicate glass shell.  Ill bet the problem with sauerkraut's Walmart flashlight has more to do with the construction of the flashlight itself rather than the LED.

[Townsend]

quote:Originally posted by patric

 I have pounded LED's mercilessly

you hound

[TulsaFan-inTexas]

quote:Originally posted by patric

quote:Originally posted by polly.karim6

The maintanences obviously would be high for these lights as well, unless there are readymade backups. These LED lights are however not much common in the other parts of the world yet. I have travelled to a few countries but havent found them anywhere yet.

One of the advantages of LED lighting is their LOW maintanence, due to their longer life.

Exactly. And I think the "lasting twice as long as conventional bulbs" is WAY conservative. LED lamps last for years and years longer than conventional bulbs. I'd say more like 5 times longer and 50+ percent energy savings.

[TulsaFan-inTexas]

quote:Originally posted by patric

quote:Originally posted by sauerkraut

I think you nailed it, LED's have to be treated with TLC or they will fail. You cannot be ruff with them in a flashlight- they are like eggs one good hard drop will kill them. I have a low-end LED flashlight from Wal-Mart 3 years old and it's still working but I'm careful with it.

You have it completely backward.
An LED is a solid-state chip completely encapsulated in solid plastic.  I have pounded LED's mercilessly and they still function.



The same cant be said for light bulbs, with fragile filaments balanced on wires inside a delicate glass shell.  Ill bet the problem with sauerkraut's Walmart flashlight has more to do with the construction of the flashlight itself rather than the LED.

Once again, CORRECT!