LED Halogen bulb replacements

[notdeadyet]

Anyone found a decent LED replacement lamp for 12V halogen canister lights? I mean the old test tube style with this kind of bulb (I think it's a GY6.35 type fitting):



I tried a few LED replacements a couple of years ago that claimed to be as bright as the halogen equivalents but they were obviously using Chinese lumens and were shit at best. Have things improved any in the last year or two?

I've got a few of these old canister lights knocking around. They're great lights but not worth the expense of splicing a brand new LED head on to. If a decent LED bulb existed then that would be a very nice upgrade.

[MarkP]

I can't see how a LED replacement would work even reasonably well without the halogen's reflector.

I suspect the Chinese like-for-like lumens don't take the halogen's reflector into account, and that's before the SI unit exchange rate comes into play.

[Paul Evans]

Anyone found a decent LED replacement lamp for 12V halogen canister lights? I mean the old test tube style with this kind of bulb (I think it's a GY6.35 type fitting):



I tried a few LED replacements a couple of years ago that claimed to be as bright as the halogen equivalents but they were obviously using Chinese lumens and were shit at best. Have things improved any in the last year or two?



I've got a few of these old canister lights knocking around. They're great lights but not worth the expense of splicing a brand new LED head on to. If a decent LED bulb existed then that would be a very nice upgrade.

Yes, Philips make them but they are a bit bigger. I use lots of them for lighting effects.

Aviable in GY 6.35 and G4.

https://www.lighting.philips.co.uk/c...ry.p-grid-icon



these may be to warm for what you want?

these may be better by Osram

https://www.cp-lighting.co.uk/LED-GY...BoCxAIQAvD_BwE

Osram will probably have a wider range of colder (Whiter) lamps?

HTH's

[Paul Evans]

I can't see how a LED replacement would work even reasonably well without the halogen's reflector.

arnt they a separate reflector in the lights Stuart is talking about?

[notdeadyet]

I suspect the Chinese like-for-like lumens don't take the halogen's reflector into account, and that's before the SI unit exchange rate comes into play.

That is the problem, the bulbs I tried were lots of little LED chips pointed in different directions so I think they suffer from not being a single point of light like the halogens.

Yes, Philips make them but they are a bit bigger. I use lots of them for lighting effects.

Aviable in GY 6.35 and G4.

https://www.lighting.philips.co.uk/c...ry.p-grid-icon



these may be to warm for what you want?

these may be better by Osram

https://www.cp-lighting.co.uk/LED-GY...BoCxAIQAvD_BwE

Osram will probably have a wider range of colder (Whiter) lamps?

HTH's

Ta. Osram was one of the ones I'd tried last time. It was probably the best of the batch but still nowhere near what I was looking for. It looks like what I'm after doesn't exist. Oh well

Osram's halogens are really good so not the end of the world. Their 35W is allegedly the same lumens as a standard 50W which bumps the burn time up to about 4hrs rather than 3. I still much prefer a big canister light to a modern small one, you've got to carry the weight somewhere, so would've been nice to find a simple LED upgrade.

arnt they a separate reflector in the lights Stuart is talking about?

Yeah they are. The LED bulbs I've tried don't focus well with the reflector, ignoring how weak they are. Just doesn't want to form a tight beam.

[MarkP]

arnt they a separate reflector in the lights Stuart is talking about?

I assumed so, but thought / think that the reflector would likely be designed for the omnidirectional radiation of a halogen filament. I've never seen a LED bulb that shares that characteristic.

By the way, thanks for the links to the bulbs... I've bookmarked them.

That is the problem, the bulbs I tried were lots of little LED chips pointed in different directions so I think they suffer from not being a single point of light like the halogens.

Yup, also that halogens radiate backwards and the reflectors make use of it.

I still much prefer a big canister light to a modern small one, you've got to carry the weight somewhere, so would've been nice to find a simple LED upgrade.

I know what you mean. OH and I use old Pro-6 canisters which I changed to NiMH battery packs to give us 24Ah. That was calculated to drive old 18W HIDs and heated vests for several 90 minute dives in 8 degree water. Batteries are a bit knackered now, so I'm thinking of Li ion or similar - should work for a whole weekend at least. Have been vaguely thinking of those car jump starter packs, but haven't found anything quite the right size.

The LED bulbs I've tried don't focus well with the reflector, ignoring how weak they are. Just doesn't want to form a tight beam.

I doubt you will, for all the reasons noted above. I ended up buying us LED heads and flogging the HID heads and spares.

[notdeadyet]

I'd thought about upgrading the batteries from lead acid to something fancier, stick with halogen head and get better run times through a custom battery pack as an alternative option. But comes back to how simple and reliable SLA is. A spare battery pack costs peanuts, I can charge it easy, it's not going to burn my house down at random. Since writing the first post I think I've actually convinced myself to stick with lead acid and halogen bulbs.

I've got a 10w LED head that someone made for me years ago, I might splice that on to one of the canisters.

[Paul Evans]

Ta. Osram was one of the ones I'd tried last time. It was probably the best of the batch but still nowhere near what I was looking for. It looks like what I'm after doesn't exist. Oh well

So a single (Maybe one each side, maybe continuous ?) COB chip like this?
Google "GY 6.35 cob"

These may be to warm, but there maybe a COB version that does the trick?

https://www.lightinthebox.com/en/p/4...xoCMroQAvD_BwE