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Suggestions for lamp Answered

Hi

I'm making a table lamp from the backlight of a broken 15" LCD, possibly putting some sort of an acetate print or photography slides where the LCD was to make it a bit more interesting and diffuse/colour the light.  However I'm stuck on how to house the light and hoping to get a few suggestions here.  Not sure whether I should box frame the whole thing, let the circuit board remain visible but covered (acrylic box) or perhaps put it into some sort of container upcycled however it will ultimately need to stand.

How would you do this?  All and any suggests welcome.

Thanks in advance
Garrett

Discussions

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tcpipdns

3 years ago

How about finding an old wood window sash and remove the old glass, then sandwich it between two pieces of Lexan? Then when you add an image, it will look like sunlight coming in from outside.

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garrettlynchtcpipdns

Reply 3 years ago

The window sash is a very good idea but I don't think I'm going to use it as it will end up quite bulky. At the moment it looks like this, I've stripped out all the unnecessary parts, spray painted the grey metal at the back and put a kettle lead with a switch on it so I could use/test it. The wires at the top are low voltage but the sooner I get those covered the better.

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Kiteman

4 years ago

A photo of the parts would help...

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garrettlynchKiteman

Reply 4 years ago

This isn't it but it pretty much looks identical to this:

https://cdn.instructables.com/FLK/UPKE/FGBQ3UUA/FLK...

I've removed the green circuit board and the button circuit board (the thin one towards the edge of the screen) and put a standard lamp switch on the power lead to turn it on and off. It's not particularly nice at the back but if I leave it exposed I could spray paint part black e.g. The grey metal sections.

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Downunder35mgarrettlynch

Reply 4 years ago

Don't get me wrong but you speak of a free standing table lamp but we have no usable picture of the parts you want to use - all I see is the metal back of a partially dismantled TV.

What type of light is used, if tubes - how many of them, can they be removed without damage.....

You get the picture?? ;)

To get the backlight working you need a signal to the board plus the supply voltage (with the lamp(s) connected).
In most panels either a 3.3V or 5V signal on the corresponding input of the driver will "start" it, some boards need a PWM signal though.

As the CLF tubes are using a high voltage you will also need to make sure your lamp will be properly insulated, unless it is a LED backlight, but we don't know...

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Downunder35m

4 years ago

I have done a backlicht frame from an monitor to check my -xrays and some old negatives.

Mine had two small diameter CFL lamps in it and the ligh spreading was done by a set of foils between the lamps and display.

All I did was to make a wooden frame with the same inner dimensions as the display frame.

Glued the electronics and lamps in place and covered it with the foils and a sheet of white acrylic.

I have done it again with a bigger TV for a friend, this model had 12 lamps in it and no foils to spread the light.

So here I only made the frame, mounted the parts and covered it all with white acrylic.
Spacing of the lamps was reduced a bit to get more light, resulting in a light frame that could hold 3 A4 sheets.

IMHO it is not worth to keep the full frame and all, only for some LED TV it is worth it as they are already thin enough to be used as a frame.

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garrettlynchDownunder35m

Reply 4 years ago

Not really a solution for a freestanding table lamp, this is more of a light table or wall light. I have seen some tutorials on how to make light tables and they are just too thick/boxy for what I want to do.