5 ms·

And what is the catch? That's almost 30% light efficiency. Hard to believe.

MrGilbert 6y ago
I think this one here appeared because it's been featured on hackaday recently[1], which got featured there because Youtube channel "bigclivedotcom" made a video about them[2], which blew through the roof because of some Youtube-algorithm-doodads? Compared to his recent other videos, this really stands out in terms of views. (Although I can really recommend the channel). Anyways, the main thing is that these lamps use more filament-strips than usual led bulb, thus allowing them to run cooler and last longer. Unfortunately, they are only available in Dubai (afaik). [1]: https://hackaday.com/2021/01/17/leds-from-dubai-the-royal-lights-you-cant-buy/ https://hackaday.com/2021/01/17/leds-from-dubai-the-royal-li... [2]: https://www.youtube.com/watch?v=klaJqofCsu4 https://www.youtube.com/watch?v=klaJqofCsu4
51Cards 6y ago
Cost to manufacture, 4x the LED modules and better supply circuitry. Upsides: LEDs driven at very low current last "forever", more light, less waste heat. Downsides: price to manufacture, and manufacturers preferring to make the typical ones that over-drive and burn out the LEDs so you have to buy replacements.
- ars 6y ago
  > so you have to buy replacements. They are rated for 15,000 hours, and so are regular LEDs. The solution is very simple: Return any LED that doesn't last the specified time. Manufactures will very rapidly start making changes if everyone did that. You can just write the installation date with a Sharpie on the bulb, or keep track of them in a spreadsheet. I've been doing it for a couple years now, and based on my data I don't think I'll ever need to buy a bulb again. My bulbs last around 1,000 hours, not even remotely close to the promised 15,000 hours. So I just return them and get new ones.
  - carlob 6y ago
    1,000 is really really low. Could it be something to do with your socket position and how they dissipate heat?
  - ryan_j_naughton 6y ago
    How do you return them? Through the manufacturer or the store? Wouldn't the return window be passed so it is now a warranty claim, right?
    - muststopmyths 6y ago
      I had some FEIT brand LEDs stop working after a few months. I sent them email and promptly got a response. I had to answer some questions about the use, and they sent me a box of new bulbs. Never asked me for proof of purchase either. Replaced bulbs have worked fine for a few years now.
    - gambiting 6y ago
      I've been returning bulbs to amazon for years this exact way, even if the bulb is out of "warranty". I just go on the chat, say "the bulb packaging says it will last 15k hours, it hasn't even been 15k hours since I bought it, much less 15k hours of use, so it's misleading advertising". They just accept a return&refund 100% of the time. Amazon is too big to care.
  - oasisbob 6y ago
    > The solution is very simple: Return any LED that doesn't last the specified time. Manufactures will very rapidly start making changes if everyone did that. Agreed. I think this is why Energy Star rated LED lamps require such a long warranty. Eg, Philips Hue products have a two year warranty, unless they carry an Energy Star, in which case it's three.
    - pbhjpbhj 6y ago
      2 years is a pretty short warranty, it's the mandated minimum for electronics in EU law AIUI.
- baybal2 6y ago
  > 4x the LED modules LEDs themselves are very cheap. For individual LEDs, the cost of the package costs more than the LED itself.
dasv 6y ago
They are much more expensive to manufacture, since they are achieving that level of efficiency by using more LEDs and undervolting them, around four times the amount of a normal lamp. Big Clive did a complete teardown and reverse engineering in his youtube channel, if you are interested.
- pbhjpbhj 6y ago
  Didn't he say they cost £4-£7 in Dubai. That's pretty cheap for a bulb of it works for 30 years. See 6m55s in the video.
emilecantin 6y ago
They're more expensive to manufacture. They basically triple the number of LED "filaments" you'd find in a similarly-rated bulb, allowing them to run everything well below "max" spec, reducing heat (increasing longevity) and allowing the LEDs to operate at a much more efficient point (less lumens per individual LED, but drastically lower consumption).
- gruez 6y ago
  >They basically triple the number of LED "filaments" you'd find in a similarly-rated bulb Does it last 3x longer?
  - scotty79 6y ago
    Might last even longer because driving leds at 1/3 of the current might extend their lives more than 3 times (or less but unlikely).
  - emilecantin 6y ago
    Yes, but it's not a linear relationship. The gain in longevity is via thermal gains, which reduces the likelihood of component failure. It might be 3x, it might be 10x. You'd get the same (longevity) gains from taking a "regular" LED bulb and running it at lower power. You'd get less light output, though.
  - minitoar 6y ago
    Nominally yes, but they also use more expensive control circuitry.
tialaramex 6y ago
They're more expensive to make as others explained. My guess is it's very difficult to make money with superior products in this sort of consumer market without government to force a level playing field where your competitors are obliged to offer a genuinely better product and/or better price to make the sale.

I think this one here appeared because it's been featured on hackaday recently[1], which got featured there because Youtube channel "bigclivedotcom" made a video about them[2], which blew through the roof because of some Youtube-algorithm-doodads? Compared to his recent other videos, this really stands out in terms of views. (Although I can really recommend the channel). Anyways, the main thing is that these lamps use more filament-strips than usual led bulb, thus allowing them to run cooler and last longer. Unfortunately, they are only available in Dubai (afaik). [1]: https://hackaday.com/2021/01/17/leds-from-dubai-the-royal-lights-you-cant-buy/ https://hackaday.com/2021/01/17/leds-from-dubai-the-royal-li... [2]: https://www.youtube.com/watch?v=klaJqofCsu4 https://www.youtube.com/watch?v=klaJqofCsu4

51Cards 6y ago

Cost to manufacture, 4x the LED modules and better supply circuitry. Upsides: LEDs driven at very low current last "forever", more light, less waste heat. Downsides: price to manufacture, and manufacturers preferring to make the typical ones that over-drive and burn out the LEDs so you have to buy replacements.

ars 6y ago
> so you have to buy replacements. They are rated for 15,000 hours, and so are regular LEDs. The solution is very simple: Return any LED that doesn't last the specified time. Manufactures will very rapidly start making changes if everyone did that. You can just write the installation date with a Sharpie on the bulb, or keep track of them in a spreadsheet. I've been doing it for a couple years now, and based on my data I don't think I'll ever need to buy a bulb again. My bulbs last around 1,000 hours, not even remotely close to the promised 15,000 hours. So I just return them and get new ones.
- carlob 6y ago
  1,000 is really really low. Could it be something to do with your socket position and how they dissipate heat?
- ryan_j_naughton 6y ago
  How do you return them? Through the manufacturer or the store? Wouldn't the return window be passed so it is now a warranty claim, right?
  - muststopmyths 6y ago
    I had some FEIT brand LEDs stop working after a few months. I sent them email and promptly got a response. I had to answer some questions about the use, and they sent me a box of new bulbs. Never asked me for proof of purchase either. Replaced bulbs have worked fine for a few years now.
  - gambiting 6y ago
    I've been returning bulbs to amazon for years this exact way, even if the bulb is out of "warranty". I just go on the chat, say "the bulb packaging says it will last 15k hours, it hasn't even been 15k hours since I bought it, much less 15k hours of use, so it's misleading advertising". They just accept a return&refund 100% of the time. Amazon is too big to care.
- oasisbob 6y ago
  > The solution is very simple: Return any LED that doesn't last the specified time. Manufactures will very rapidly start making changes if everyone did that. Agreed. I think this is why Energy Star rated LED lamps require such a long warranty. Eg, Philips Hue products have a two year warranty, unless they carry an Energy Star, in which case it's three.
  - pbhjpbhj 6y ago
    2 years is a pretty short warranty, it's the mandated minimum for electronics in EU law AIUI.
baybal2 6y ago
> 4x the LED modules LEDs themselves are very cheap. For individual LEDs, the cost of the package costs more than the LED itself.

dasv 6y ago

They are much more expensive to manufacture, since they are achieving that level of efficiency by using more LEDs and undervolting them, around four times the amount of a normal lamp. Big Clive did a complete teardown and reverse engineering in his youtube channel, if you are interested.

pbhjpbhj 6y ago
Didn't he say they cost £4-£7 in Dubai. That's pretty cheap for a bulb of it works for 30 years. See 6m55s in the video.

emilecantin 6y ago

They're more expensive to manufacture. They basically triple the number of LED "filaments" you'd find in a similarly-rated bulb, allowing them to run everything well below "max" spec, reducing heat (increasing longevity) and allowing the LEDs to operate at a much more efficient point (less lumens per individual LED, but drastically lower consumption).

gruez 6y ago
>They basically triple the number of LED "filaments" you'd find in a similarly-rated bulb Does it last 3x longer?
- scotty79 6y ago
  Might last even longer because driving leds at 1/3 of the current might extend their lives more than 3 times (or less but unlikely).
- emilecantin 6y ago
  Yes, but it's not a linear relationship. The gain in longevity is via thermal gains, which reduces the likelihood of component failure. It might be 3x, it might be 10x. You'd get the same (longevity) gains from taking a "regular" LED bulb and running it at lower power. You'd get less light output, though.
- minitoar 6y ago
  Nominally yes, but they also use more expensive control circuitry.

tialaramex 6y ago

They're more expensive to make as others explained. My guess is it's very difficult to make money with superior products in this sort of consumer market without government to force a level playing field where your competitors are obliged to offer a genuinely better product and/or better price to make the sale.