LED price -vs- effeciency poll

alesh said:

Yeah radial are much better suited for passive cooling. Typical temps means Tc=85°C ?
TBH I don't like radials as I'd have a need to cover them which of course is the opposite you want to do with a passive HS. What's the plan how to incorporate those radials into a good looking fixture?

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Typical temps are half way between min and max, 55C.

Those radials are just over .75" thick. Ideally I would wedge them between a channel so there are no pointy parts sticking out and would be a nice look, but likely it would be similar to the designs I've already built where the frame is slightly larger than the sink footprint... except the drivers would be consolidated, the wires hidden, no zip ties, and there would be an electrical box for wire terminations, inlet, outlet, power switch and dimmer.

Tell me this isn't a sexy beast.

Who cares about what color heat sink cools the best. Have 4 different colors, and let customers choose. This superficial choice will likely cause more customer satisfaction than the best performing lamp will.

Also, getting a poll for "how much money do you want to spend" is somewhat useless. Without any skin in the game, people will have no problem committing to your poll. The actual market wants "cheap as dirt, but better than the best". Most potential customers will not understand how unreasonable this is, nor will they care.

Lots of companies have been trying to ask customers what types of products they'd prefer, and how they want older versions changed... and usually customers just say random shit. It's all hypothetical until they actually have to pay, so what do they care? Yes, I'd buy a flying car. Of course I want it to shoot rainbows.

Rahz said:

Typical temps are half way between min and max, 55C.

Those radials are just over .75" thick. Ideally I would wedge them between a channel so there are no pointy parts sticking out and would be a nice look, but likely it would be similar to the designs I've already built where the frame is slightly larger than the sink footprint... except the drivers would be consolidated, the wires hidden, no zip ties, and there would be an electrical box for wire terminations, inlet, outlet, power switch and dimmer.

Tell me this isn't a sexy beast.

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Very good temps! It kinda surprises me TBH.

I personally don't like the design very much. I also can't imagine shipping this beast. I like the way @stardustsailor makes his lamps.

Do I understand it correctly that you live in the EU? If so, did you bother with the legal thing about making/selling LED lamps? I'm wondering what has to be followed...

The sad reality is that most customers are so dumb, they'd probably pay more for the active cooling one even if it meant they got significantly less aluminum. They'll also pay full price for a BLT just to take out the B. (seen that a lot)

churchhaze said:

The sad reality is that most customers are so dumb, they'd probably pay more for the active cooling one even if it meant they got significantly less aluminum. They'll also pay full price for a BLT just to take out the B. (seen that a lot)

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What's a BLT?

alesh said:

Very good temps! It kinda surprises me TBH.
Do I understand it correctly that you live in the EU? If so, did you bother with the legal thing about making/selling LED lamps? I'm wondering what has to be followed...

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I live in the states. I wasn't aware there are restrictions on making lamps. Anyway, the lamp in the pic runs at .7A so more emitters and metal and things are spread out more. A similar retail product would be a bit more compact and lighter. You should see the first lamp I built... 23 emitters, 2.5 feet by 6 feet. I almost needed help installing it.

churchhaze said:

Who cares about what color heat sink cools the best. Have 4 different colors, and let customers choose. This superficial choice will likely cause more customer satisfaction than the best performing lamp will.

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Lol agreed. Sad but true.

alesh said:

What's a BLT?

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Rahz said:

I live in the states. I wasn't aware there are restrictions on making lamps. Anyway, the lamp in the pic runs at .7A so more emitters and metal and things are spread out more. A similar retail product would be a bit more compact and lighter. You should see the first lamp I built... 23 emitters, 2.5 feet by 6 feet. I almost needed help installing it.

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I see. Must've confused you with someone else, sorry.
IDK about the US but there certainly are restrictions in the EU for making electronics. I've just did a quick search and it's pretty complicated there. Both national and European regulation and standards have to be followed.

churchhaze said:

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I did find BLT on wiki. I just didn't think it was it you had meant lol. Reminds that I skipped the breakfast today gonna make it up now. Certainly no tomatoes for me, though.

Haha, blt, that thing is beggin for an egg!

Maybe not compliance but, even if encased, i'd like a lens or reflector that covers the cob & wiring, would stop prying fingers, be worth the expense.

Rahz said:

All that stuff is interesting, especially here and in a DIY context and I don't mind getting into it, but it wasn't really the point of the post. Estimated cost and efficacy is all that's needed to answer what was intended to be a simple poll. One of those lamps I wouldn't consider building anyway (though I could), but again, not the point. I don't think the average customer will be concerned with the size of the heat sinks or how many COBs there are, except maybe that more COBs = better, which I did mention as a consideration.

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I do agree with you that the more the COBs the better, but only to an extent; just like the rest of it, there's that uncharted middle ground that we're all trying to stumble into .

Rahz said:

Typical temps are half way between min and max, 55C.

Those radials are just over .75" thick. Ideally I would wedge them between a channel so there are no pointy parts sticking out and would be a nice look, but likely it would be similar to the designs I've already built where the frame is slightly larger than the sink footprint... except the drivers would be consolidated, the wires hidden, no zip ties, and there would be an electrical box for wire terminations, inlet, outlet, power switch and dimmer.

Tell me this isn't a sexy beast.

Click to expand...

That's one sexy bitch! lol