Any way to make head of flashlight transfer heat to body quicker?

[johnny13oi]

Hey guys, I have a Dexlight X.1 running on some 14500s. And from my observations, the head gets pretty hot on default, high, and medium settings. Obviously the higher the setting the quicker. But on default and high, the head gets hot in about .. 20 seconds. I don't know how much heat an LED can tolerate but I'm pretty sure its not good for it. The body however stays cool. So if there was a way to conduct the heat to the body quicker, I think it would be much better. From what I think, I think the rubber o-rings kind of insulate the head from the body thermally.

 

[rizky_p]

Hey guys, I have a Dexlight X.1 running on some 14500s. And from my observations, the head gets pretty hot on default, high, and medium settings. Obviously the higher the setting the quicker. But on default and high, the head gets hot in about .. 20 seconds. I don't know how much heat an LED can tolerate but I'm pretty sure its not good for it. The body however stays cool. So if there was a way to conduct the heat to the body quicker, I think it would be much better. From what I think, I think the rubber o-rings kind of insulate the head from the body thermally.

how about some thermal paste around the thread that connect the head and body. Just an idea not sure any negative impact.

 

[johnny13oi]

how about some thermal paste around the thread that connect the head and body. Just an idea not sure any negative impact.

Anyone know if this will help and if thermal paste has any impact on the o-rings?

 

[moon lander]

i seem to have the exact same problem with my Jetbeam MKIIx.

in a way this is good because it keeps your battery cool. if the entire light heats up, its better for heatsinking purposes but then the battery chamber is almost as hot as the led. maybe the ideal situation would be all aluminum head/body with a rubber coating inside battery tube (or some other thermal insulator) to keep the heat from transferring to your cell.

my cree'ed elly has a body-mounted led, and can heat the battery tube up alot. that seems like a bad idea, anyone disagree?

 

[johnny13oi]

I doubt that it would be too bad as long as you don't run it for way too long. The thickness of the head seems very thin so it appears like it would not be able to dissipate or take in much heat. I think finding a way to transfer the head to the body would be the best thing. Prolonging the life of the LED.