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Author Topic: Lighting for poster cases
Bobby Henderson
"Ask me about Trajan."

Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001


 - posted 02-15-2018 12:25 PM      Profile for Bobby Henderson   Email Bobby Henderson   Send New Private Message       Edit/Delete Post 
Mike, just make sure you make your poster cabinets deep enough to avoid hot spots and other uneven lighting issues. Diffuser films work only so well.

We're using LEDs more and more in sign cabinets. There is a variety of stick-like fixtures which can replace various kinds of fluorescent lamps in cabinets, even the high output variety used in signs. They cost more than a T12D/HO lamp, but save money on power costs, service, etc over the long run.

The LEDs in roll form are good to use in cabinets or lighted displays with unusual shapes like logos and individual channel letters. LEDs have all but replaced neon in channel letter signs that have trim-capped acrylic faces. There is still no credible LED substitute for exposed neon glass tubes, at least not for neon that is bent into letters or other creative shapes. LEDs are good for straight runs of border lighting though.

I hate what's happening to neon overall; it's disappearing completely in some cities and towns. And that's too bad because it has such a cool and unique look. Not many customers want to pay the extra cost for it. Lots of tube benders are getting old and not passing their skills along to younger people.

Not all LEDs are created equal either. The cheap stuff from unrecognizable brands in China can go dim overall in just a couple years and have individual lamps go bad pretty easy. Good quality LEDs should give you at least a good 7-10 years of use. We can sell a few different brands of "jumbotron" signs, but very much prefer Daktronics. It's an American company; they use much better quality LEDs than their rivals and the difference shows in their displays.

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Mike Blakesley
Film God

Posts: 12767
From: Forsyth, Montana
Registered: Jun 99


 - posted 02-15-2018 01:39 PM      Profile for Mike Blakesley   Author's Homepage   Email Mike Blakesley   Send New Private Message       Edit/Delete Post 
These cabinets are about 3 inches deep. I was thinking about using 1/8" white plexiglass for the diffuser but I wonder if that's too thick for enough light to get through. We have an existing case inside the lobby that does have 1/8" plexi, but it has florescent lights in it.

Bobby, do you have a manufacturer/ part number for those stick-shape LED fixtures you mentioned? I do have 110v available to the location of the cabinets.

Regarding neon, I do love the neon look....the Roxy has 54 neon tubes (counting 24 that are inside the readerboards) and I wouldn't trade that look for anything. We use a company out of Billings to maintain the neon and they have had the same guy working for them for at least 25 years. I might check with them to see if they have anything available for what we're looking for.

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Bobby Henderson
"Ask me about Trajan."

Posts: 10973
From: Lawton, OK, USA
Registered: Apr 2001


 - posted 02-16-2018 10:40 AM      Profile for Bobby Henderson   Email Bobby Henderson   Send New Private Message       Edit/Delete Post 
We buy most of the LED components and fixtures we use in sign cabinets and channel letters from Principal LED in San Angelo, TX. Their web site is www.p-led.com. They have lots of different products. This page for sign cabinets will have at least a couple or more items appropriate for poster cases. You can talk to their staff on the phone to discuss things in more detail.

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Mike Blakesley
Film God

Posts: 12767
From: Forsyth, Montana
Registered: Jun 99


 - posted 02-16-2018 11:39 AM      Profile for Mike Blakesley   Author's Homepage   Email Mike Blakesley   Send New Private Message       Edit/Delete Post 
OK thanks - I think I'll check with our sign company people and see if they have any ideas that won't break the bank! [Smile]

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Nathan McLaughlin
Film Handler

Posts: 12
From: Checotah ,OK /United States
Registered: Jun 2017


 - posted 02-16-2018 11:46 AM      Profile for Nathan McLaughlin   Author's Homepage   Email Nathan McLaughlin   Send New Private Message       Edit/Delete Post 
Mike check out ( EnvironmentalLights.com )

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 02-16-2018 01:07 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Mike, what about installing 4 of those skinny fluorescent tubes, but using the LED retrofit lights that fit in them?

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Mike Blakesley
Film God

Posts: 12767
From: Forsyth, Montana
Registered: Jun 99


 - posted 02-16-2018 03:04 PM      Profile for Mike Blakesley   Author's Homepage   Email Mike Blakesley   Send New Private Message       Edit/Delete Post 
That would work too if I could find fixtures that don't get the bulbs too close to the poster.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 02-17-2018 12:10 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
I use the GEMXRD-1 12v led module in the tetramax from ge These are little mutdules with 2 or 3 LED on them daisy chained togather with two wires about 6 " apart
They work well in many of our fixtures and we have used them in some poster cases with indirect mounting

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