Converting lantern

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Hellie112
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Converting lantern

Dear BLF members,

I am planning to convert a gasoline/candle/kerosene lantern (whatever is not to expensive and looks nice) to a led lantern. But I have a few items I need sorted out. I could use your help.

I have searched the Internet for a hosts lantern. And I think something like this would do to the trick.

I am planning following mods:

Replace the gas valve and build a pod meter inside (This way I could regulate the current to the led.)
Replacing the fual cap or the pressure pomp for a switch.
Mod the fual tank compartment so it can hold Li-ion batteries. (probably from the underside of the lantern.) also I have to find an suitable battery holder.

For the led I was thinking of something powerful and a warm white tint.
Maye an XHP70 or an MT-G2 (or 4x xml2 see bottom of this post)

I would place the led on the bottem.
And I am looking for a reflector for the upper side of the lantern. Something like this.

What is the name this type reflector?
Does anyone know where I could buy these reflector?

An other thought of building the lantern would be.

Placing a square bar vertically and mounting the 4 led’s on it facing all 4 directions.

I don’t think this configuration would look nice and I would need to use a diffusing glass.
But I would not need to use a reflector or lens.

Edited by: Hellie112 on 01/16/2015 - 18:30
wight
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I find the kind of reflector you mentioned to be ineffective. I suggest using a diffusing tube of some kind.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

WarHawk-AVG
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I still want to see what coating the inside of the glass with some sort of bonding agent and the high intensity brightness white glow in the dark powder would do…those smaller green ones make quite a bit of light, now imagine 100x the surface area but have white GITD powder

wight
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I imagine that it would be very green. Why not use normal remote phosphor instead, along with a royal blue LED?

http://www.digikey.com/product-search/en/optoelectronics/optics-remote-p...

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

DBSAR
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I am already working on a Coleman 321 Gas Lantern conversion to LED too. ( testing various ideas of making a “module” that will work in a Gas lantern wile still keeping the gas capability of the lantern, and another is a permanent conversion to MT-G2 with 4 modes (including moon light) and capable of running from different battery types.
This is a former remote-control Fluorescent Coleman lantern converted to LED, ( i converted a warm-white Household LED bulb to run of low voltage DC from the modified Lantern driver circuit:

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

wight
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WarHawk-AVG wrote:
I still want to see what coating the inside of the glass with some sort of bonding agent and the high intensity brightness white glow in the dark powder would do…those smaller green ones make quite a bit of light, now imagine 100x the surface area but have white GITD powder
wight wrote:
I imagine that it would be very green. Why not use normal remote phosphor instead, along with a royal blue LED? http://www.digikey.com/product-search/en/optoelectronics/optics-remote-p...

The largest ChromaLit 360 product is the DOM100 at 50mm ID / 44mm OD / 34.1mm high. The 80CRI, 3000K version should be around $3 plus shipping if you can find it. Like here?: http://www.chip1stop.com/web/USA/en/dispDetail.do?partId=ITMC-0000087

OTOH the datasheet says that ChromaLit is polycarbonate. The largest square sheet is 200×200mm @ 2.1mm thick… I wonder if you could vacuum form it into the shape of your dreams? There’s also a 305mm x 215mm rectangular sheet available in the same thickness, maybe that could be gently bent (with heat) into a cylinder…

http://www.intematix.com/uploads/datasheets/ChromaLit360datasheet.pdf
http://www.intematix.com/uploads/datasheets/ChromaLitPCDatasheet.pdf

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

WarHawk-AVG
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no glow powder?

https://www.glonation.com/glow-in-the-dark-products/neutral-glow-powders...


Quote:
White Super Phos Glow Powder

4 hour glow time. White is a relatively new color in the world of glow pigments. It is a combination of aqua and violet glow powders that have been super heated to extreme temperatures. Excellent background color, will fade leaving brilliant foreground colors to shine. Purest white color available.

Brightest Commercially available Glow in the dark powder


Coat the inside with clear epoxy…dust the inside with this…roll it around so it imbeds well…or clear silicon
southland
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Hellie112
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Oke thx for the replies.

I given up on the reflector idea, I will still mount the led on the bottom and use a defusing glass . I think a mirror on the top side would also beneficial.

But I am not so exited about the glow in the dark powder. maybe I do some tests with it when the mod is done.

@DBSAR
I like your mod. Do you have any pictures of your lantern in action?

wight
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The mirror won’t hurt anything, that’s for sure. A spherical or hemispherical mirror should be cheaply available. A polished ball bearing or xmas tree ornament might get you where you want to go.

Still fine, still on a break. One day I’ll catch up with you folks! previous wight catchup Wink
list of my drivers & variants (A17DD, FET+1 stuff, WIP stuff, etc)

moT
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I converted the “As seen on TV: Old Time Brooklyn Lantern” to xml, but got it at drug store for 4 bucks . Has room in to bottom to fit a new battery tray with three 18650s in the original battery compartment. Up top is where i mounted the XML-U2 as there, it had plenty of room for thermal-mass /heat-sink. Was even able to retain the original functionality by shortening the the 12 lenser led tree/stack closer to the bottom. I too was looking for the name of this convex style mirror. But ended up making my own and wrapped the light tube near the top with diffusing material.

ALL YOUR LUMEN ARE BELONG TO US.

Hellie112
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Do you have any photo’s? I find it interesting to see how other people have modded there lanterns.

moT
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Ill post pics as soon as i find a new photo linking site.

ALL YOUR LUMEN ARE BELONG TO US.

Poppy
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Hellie112 wrote:

I would place the led on the bottem.
And I am looking for a reflector for the upper side of the lantern. Something like this.

What is the name this type reflector?
Does anyone know where I could buy these reflector?


IMO the problem with most lanterns is that they produce a lot of GLARE.
Typically with the led mounted on the bottom, and a reflector on top, there are two points of glare. Therefore a diffuser between the two points is important. One way to reduce some of the glare from the reflective cone is to make it out of unpainted wood. I suppose that it won’t reflect as much light, but it will be more pleasing to look at. If you paint it red, orange or yellow, it will give you a warmer tint.

The Siege and UST lanterns reportedly have less glare than others. I noted that they have multiple emitters (each putting out fewer lumens than single emitter lanterns that have similar total output) and that the multiple emitters project their light onto the cone shaped reflector at multiple spots (at lower intensity) and that effectively reduces the glare from the reflector.

My Grandkids call me Poppy

DBSAR
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Read here, this may help you with your Gas lantern to LED: >> http://budgetlightforum.com/node/37666

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

DBSAR
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Hellie112 wrote:
Oke thx for the replies.

I given up on the reflector idea, I will still mount the led on the bottom and use a defusing glass . I think a mirror on the top side would also beneficial.

But I am not so exited about the glow in the dark powder. maybe I do some tests with it when the mod is done.

@DBSAR
I like your mod. Do you have any pictures of your lantern in action?

Here is another build that may interest you more: http://budgetlightforum.com/node/37666

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

mattthemuppet
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and another one Smile

http://budgetlightforum.com/node/11439

I like mine a great deal and it's a great light to have as an emergency back up light too.

Hellie112
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I have made some progress, I have bought a Petromax style lantern as a donor lamp. But I am still waiting for a 3000k XHP 70 led on a star or so. The led are already more than 4 months in production an still no sign in the warm white led..

But I am still lacking some kind of reflector for the bottom of the lamp. Any suggestions would be welcome.

DBSAR
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Hellie112 wrote:
I have made some progress, I have bought a Petromax style lantern as a donor lamp. But I am still waiting for a 3000k XHP 70 led on a star or so. The led are already more than 4 months in production an still no sign in the warm white led..

But I am still lacking some kind of reflector for the bottom of the lamp. Any suggestions would be welcome.

4 months is a long wait. as for the bottom of the lantern, i usually just use a mirror surface or paint it white.

That Canadian flashlight guy & Lantern Guru -Den / DBSARlight

slotguy
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Made a Solar post light out of a Large outdoor light from Lowes. If you can find a frosted globe it will help. I took a single XML on a heat sink and situated it on the bottom facing up. Then took some clear Plexiglas (Acrylic) 1” × 1” × 3” shaped it into a cone shaped cylinder and roughly sanded the outside. Then placed it on top of the LED and it is very difficult to tell the difference between it and a normal light bulb.

snakebite
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that cylindrical globe is real easy to diffuse.
i save diffuser sheets from busted screen lcd tv’s i part out.
cut to size and curl it in the tube.

Poppy wrote:
Hellie112 wrote:

I would place the led on the bottem.
And I am looking for a reflector for the upper side of the lantern. Something like this.

What is the name this type reflector?
Does anyone know where I could buy these reflector?


IMO the problem with most lanterns is that they produce a lot of GLARE.
Typically with the led mounted on the bottom, and a reflector on top, there are two points of glare. Therefore a diffuser between the two points is important. One way to reduce some of the glare from the reflective cone is to make it out of unpainted wood. I suppose that it won’t reflect as much light, but it will be more pleasing to look at. If you paint it red, orange or yellow, it will give you a warmer tint.

The Siege and UST lanterns reportedly have less glare than others. I noted that they have multiple emitters (each putting out fewer lumens than single emitter lanterns that have similar total output) and that the multiple emitters project their light onto the cone shaped reflector at multiple spots (at lower intensity) and that effectively reduces the glare from the reflector.

Hellie112
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The project is on hold.
I have bought a nice looking Petromax lantern. But it’s a bit heavy but there is also a lot of space for batteries etc. Maybe I will put a loudspeaker in it.

But I just couldn’t find great reflector. I tried some aluminum foil, also metallic spray paint but that’s just crap. I will probably only use a diffuse.

I am also thinking of using some candlelight firmware in the driver to give it a bit of authentic feeling.