Gallery of Lights

Lanterns/Fixtures => Traffic Lights => Topic started by: joe_347V on November 04, 2011, 08:27:42 PM

Title: Traffic Signal Light Sources
Post by: joe_347V on November 04, 2011, 08:27:42 PM
Yes. Flash lights, traffic lights, landscape lights, indicators, night lighting, etc are example of ideal applications for LED. With the current technoledgy of LEDs, they work best in applications where they're not being used to illuminate an area. (Street lighting is a good example for a poor application). LEDs are excellent for battery powered lights, traffic lights, indicators, and low voltage landscape lights because they use far less energey then the incandescents.

I'm not a fan of LED traffic lights, the colours are sometimes inconsistent even within the same brand.
Title: Traffic Signal Light Sources
Post by: Mike on November 04, 2011, 09:47:14 PM
Sort of sounds like probe metal halide. I do notice some are bluish. I think the green light should be green. :8)
Title: Traffic Signal Light Sources
Post by: joe_347V on November 04, 2011, 09:49:58 PM
Bluish crosswalk lights too. :8) They also vary in brightness too some are too dim and some blind you at night, I guess that's why my lights are still incandescent. :D
Title: Traffic Signal Light Sources
Post by: Mike on November 04, 2011, 09:53:45 PM
I use 60w lamps in my signal and they're plenty bright. My signal will always remain incandecent. ;D Incandescent is more intersting than LED.
Title: Traffic Signal Light Sources
Post by: joe_347V on November 04, 2011, 09:55:24 PM
I use wattages close to what the ones on the street would use, and incandescent is more interesting, I've yet to see a LED signal that emulates the fade out correctly. 
Title: Traffic Signal Light Sources
Post by: Mike on November 04, 2011, 09:57:35 PM
what wattage do they use on the streets? My traffic light's lenses say "150w max; 100 if masked".
Title: Traffic Signal Light Sources
Post by: joe_347V on November 04, 2011, 10:00:50 PM
Hmm over here 8 inchers usually got 60 or 69w, 12 inchers 116, 135 or 150w- the 116w is usually used for peds and arrows though.
Title: Traffic Signal Light Sources
Post by: Mike on November 04, 2011, 10:03:24 PM
Anything over 60w in the traffic light starts getting to intense for inside IMO. Those reflectors are very strong.
Title: Traffic Signal Light Sources
Post by: joe_347V on November 11, 2011, 12:22:33 AM
The old style glass reflectors were arguably even more intense when new.
Title: Re: Traffic Signal Light Sources
Post by: Mike on November 28, 2011, 10:39:17 PM
Yeah. i'd assume the glass reflectors were similar to a typlical mirror. That'd be soem intense light. :o
Title: Re: Traffic Signal Light Sources
Post by: joe_347V on November 28, 2011, 11:28:59 PM
Yeah. i'd assume the glass reflectors were similar to a typlical mirror. That'd be soem intense light. :o

They are like mirrors, I have a glass reflector from a old GE signal and it still have a pretty strong beam even after 50+ years. 
Title: Re: Traffic Signal Light Sources
Post by: basilicon89 on November 29, 2011, 11:52:30 AM
Less wattage is needed for lenses masked out for arrows, etc. The baked on black enamel tends to heat up the lens. Thats why your plastic lens says "100 Watt If Masked". No plastic lenses are designed for long term heat regardless if theres a 150 Watt or 50 Watt. If its on long enough to get hot the plastic will be affected.

Older LED traffic signals had the most color differences because of the experimentations with ITE and the MUTCD to get it close to the original incandescent color. Most modern LEDs by good brands (Dialight, GE, Leotek and EOI) are very close to the original lamps. Fade out isn't a concern in the "real world" ...safety is.

As for glass reflectors. Those were the best for incandescent light output hands down. My 65 year old Eaglelux head still has its original glass with minimal spotting. Glass is still available (and  was required for signals in New York City prior to the LED revolution)
Title: Re: Traffic Signal Light Sources
Post by: Mike on November 29, 2011, 07:31:53 PM
The LEDs in my room stimulate the incnadescent traffic light fade out very well. I beieve it's becuase there are capacitors in therm that release charges when deenergized.
Title: Re: Traffic Signal Light Sources
Post by: joe_347V on November 29, 2011, 07:44:38 PM
The problem I have with using regular screw in LEDs is that colour of the green often gets distorted and that since the screw in LEDs are diffused the effect isn't the same.
Title: Re: Traffic Signal Light Sources
Post by: basilicon89 on November 29, 2011, 08:03:46 PM
The LEDs in my room stimulate the incnadescent traffic light fade out very well. I beieve it's becuase there are capacitors in therm that release charges when deenergized.

What brand do you have?? I dont know of any brands that fade out without an issue with the wiring.
Title: Re: Traffic Signal Light Sources
Post by: Mike on November 29, 2011, 09:45:48 PM
Utilitech brand LED lights. I use them in my ceiling fan. :D
Title: Re: Traffic Signal Light Sources
Post by: joe_347V on November 29, 2011, 10:26:00 PM
I guess he thought you were talking about traffic signal LED modules instead of LED retrofit lamps intended for general lighting.
Title: Re: Traffic Signal Light Sources
Post by: basilicon89 on November 29, 2011, 11:32:16 PM
I guess he thought you were talking about traffic signal LED modules instead of LED retrofit lamps intended for general lighting.

That is correct.
Title: Re: Traffic Signal Light Sources
Post by: Mike on November 30, 2011, 05:10:28 PM
Ahh. I don't have any access or use for stuff like that. I'm on the look for visors, possible i can get some after the holidays.
Title: Re: Traffic Signal Light Sources
Post by: joe_347V on November 30, 2011, 10:39:51 PM
There's a surplus store that sells LED signal modules although they seem to be stocking reflectors instead.

I think eBay should be your best bet for finding those visors.