How to mount LEDs?

Thread Starter

woozycactus

Joined Jan 4, 2021
113
quick question, My wife has asked me to turn a candle street lamp into an led light. I have 1 watt led cobs and heat sinks to attach. what would be a good idea to mount the heatsink too, to stay in the light? like some kind of base material, around the house type of thing. for heat wise, is wood safe? just any plastic? plexiglass ok?

thanks in advance!
 

KeithWalker

Joined Jul 10, 2017
3,607
Will the LEDs be electrically insulated from the heat sinks? If so, it would be best to mount the heat sinks on metal which would help to dissipate the heat.
 

Thread Starter

woozycactus

Joined Jan 4, 2021
113
Will the LEDs be electrically insulated from the heat sinks? If so, it would be best to mount the heat sinks on metal which would help to dissipate the heat.
the heat sinks are insulated with pads, I don't have to worry about electrical insulation with LEDs. I am just wondering if things like wood, would be ok to mount hot LEDs to. If not. what around the house objects would work best? Metal is not really ideal, other components would not be insulated to mount onto metal without stand offs.
 
Last edited:

KeithWalker

Joined Jul 10, 2017
3,607
the heat sinks are insulated with pads, I don't have to worry about electrical insulation with LEDs. I am just wondering if things like wood, would be ok to mount hot LEDs to. If not. what around the house objects would work best? Metal is not really ideal, other components would not be insulated to mount onto metal without stand offs.
How many and in what arrangement do you want to mount them. Wood and plastic are definitely out unless you have some teflon. Unfortunately, that is difficult to work with.
I would make some kind of central column out of folded or rolled tinplate from old cans and mount them on that. Tinplate is easy to work with. You can cut it with scissors. It's easy to bend and a medium sized soldering iron with a broad bit will solder the seams.
 

Thread Starter

woozycactus

Joined Jan 4, 2021
113
Oh, in that case then just mount them properly.

(Ask a generic question, get a generic answer.)
Dude, I want to know if its thermally safe to mount high watt LEDs to wood or plastic.
How many and in what arrangement do you want to mount them. Wood and plastic are definitely out unless you have some teflon. Unfortunately, that is difficult to work with.
I would make some kind of central column out of folded or rolled tinplate from old cans and mount them on that. Tinplate is easy to work with. You can cut it with scissors. It's easy to bend and a medium sized soldering iron with a broad bit will solder the seams.
sorry, I somehow missed this. they are just going to mounted on a flat surface. anywhere between 2 to 4 chips but may end up using 3watt chips instead. I have to mount a protection board and a 21700-battery holder to the same surface. I'm trying to avoid using metal if possible. The battery holder's pins are like through hole pins, (facing downward) and the charging chip is not insulated. If my only option is metal then I know I need to insulate the chip and battery holder with plastic at least but I would rather have something that everything mounts to that can take the heat and nonconductive at 8-9 volts.
 

KeithWalker

Joined Jul 10, 2017
3,607
You can buy pot holders and cookie sheets made of thin flexible heatproof silicon sheet. You could use that to electrically insulate your battery holder and electronics.
 

MisterBill2

Joined Jan 23, 2018
27,523
LEDs can well be mounted in drilled and reamed holes in an aluminum plate , 1/8 to 3/16 thick The holes should be reamed to match the OD of the portion of the LED that will be forced into the hole. Or just 0.001 inch larger diameter. Then the aluminum should be anodized, which will create a layer of insulation. Then press the LEDs gently into the holes and add a very small amount of silicone oil to serve as a heat conductor. That will work well for the plastic cased LEDs, those made to be mounted on heat sinks will be a bit more work.
 
Top