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Dubai lamps

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They're supposed to retain ~78% of lumens after 25k hours. No way.
It's possible but you need to remember those LEDs are running at 25% also. If you run them at rated power after 25k hours I would imagine the lumen drop to be far greater than 22%.

As I said earlier electronics have a sweet spot too hot it fries too cold and it slows flow I'm sure they are well engineered bits of kit and the glass shroud has benefits when running LEDs so under rated for giving a constant temp, but let's face it the king of Dubai is probably vain and liked the look of the filament led bulbs but all the cheap Chinese ones he got off Alibaba burn out too quickly.
 

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Oh i finally found the globes i use around the house:

Have these in salt lamps to diffuse them, far more than enough for single-room night lighting (like letting the dog out to pee without stepping on lego)

1644403049481.png
1644403098418.png



The dooby lights DO have some competition out there
 
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It's possible but you need to remember those LEDs are running at 25% also. If you run them at rated power after 25k hours I would imagine the lumen drop to be far greater than 22%.
You gain some but not that much - link. And others probably know that and reduce the current too to get to 150-160 lm/W.
As I said earlier electronics have a sweet spot too hot it fries too cold and it slows flow I'm sure they are well engineered bits of kit and the glass shroud has benefits when running LEDs so under rated for giving a constant temp
It's most important to keep temps low, not constant. The glass can't possibly have a good effect.
but let's face it the king of Dubai is probably vain and liked the look of the filament led bulbs but all the cheap Chinese ones he got off Alibaba burn out too quickly.
Fully agreed. In addition, the king is not the only one who's rich in Dubai.
 
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Lumens aside, color temperature matters too.
I would only get the warm white versions.
I think we all agree in that people who get cool white tones are psychopaths /s

3000K is perfectly balanced.

Oh i finally found the globes i use around the house:

Have these in salt lamps to diffuse them, far more than enough for single-room night lighting (like letting the dog out to pee without stepping on lego)

View attachment 235899

View attachment 235900


The dooby lights DO have some competition out there
1.2W, crazy low, the few E14 screw bulbs I have are either 40 or 25W incandescent, the 25W literally look like candlelights, perfect for a romantic dinner I'd say lol
 
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I find it intriguing that daylight is preferred in hot climates and warm white in cold climates.

9W for my '60W' LED bulbs makes me feel bad knowing it could be just 3W
 
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Are you on a solar/alt-e setup?

And...O-F-F is even better than 3w.
 
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Ever test the output of a LED lamp and compare it to an incandescent?

At work, we were looking to replace the 400W Metal Halide lamps in our temporary job lighting.

We bought several LED lamps and tested them against the HID.

We found that the foot-candles were considerably less than advertised. By which I mean the 100W LED lamp advertised as '400W equivalent' produced less than half the foot-candles (around 40%, as I recall).

We found one 200W LED that was able to produce around 80% of the foot-candles of the 400W HID, but was so large, it would not fit the fixture.

We settled for 150W LED, which gave us about 60% of the foot-candles.
 

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Interesting topic. It made me look a little deeper into the kind of bulbs we were using around the house. The most common one being:



Or the OSRAM equivalent that we usually buy for £1-2 from the £1 shop (or $1 store if youre from the US)

These LED bulbs cost more (6-9 each) but i guess it will be worth it in the long run.
 
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What if you knew that could be done for 5W?
 

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I was just extrapolating the Dubi bulbs
 

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What if you knew that could be done for 5W?
Or 1W

I have motion sensor smart lights for my doggo (phillips hue)
The sensors run on batteries, but these 1.2W globes are making me consider just having them on 12 hours a day, vs smart globes and setups that use more power when on - the overall consumption may be about the same
 
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I find it intriguing that daylight is preferred in hot climates and warm white in cold climates.

9W for my '60W' LED bulbs makes me feel bad knowing it could be just 3W
Bright daylight and cool temperatures (over 5500K) were used in behavioural experimenting and psychological torture during the cold war, nowadays they're used in offices and schools because for the very same reason: they reduce melatonin levels and make people concentrate and stay alert. Warm tones are more comfortable to stay at home and relax.
I'm not a KGB agent nor I'm working at an office so I prefer warm light ^^ it's also easy on your eyes.

At work, we were looking to replace the 400W Metal Halide lamps in our temporary job lighting.
MH gang as well ^^ my room has a 250W coated bulb, still haven't found a replacement for it, tubular LEDs look neat but the ones I can get aren't powerful enough and their cap is smaller -E27 vs E40-
 
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And...O-F-F is even better than 3w.
Sadly, it's been often dreary lately where I am. You almost always need lighting in the northeast U.S. Even when we have sunny days, when it's winter!

The days are not that long yet over here, even when I'm noticing longer daylight now! (no surprise with it being almost mid-February)

I still often use incandescent here! But, I got the best LEDs stocked up, started that, back in the late-2010s, in case I lose all the incandescents and the high-end fluorescents. The CRI of the long Phillips Alto fluorescent tubes, are easily up there with most of the better LEDs, if not better than most of the better LEDs! Run-of-the-mill LEDs, have a problem with excess blue-light!

Looks like people are in fact, starting to complain about light-pollution that's associated with LED outdoor lighting! (mostly the LED street lights and LED parking lot lights)

Over here, the LED outdoor light craze, mostly started in the mid-2010s.
 
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Or 1W

I have motion sensor smart lights for my doggo (phillips hue)
The sensors run on batteries, but these 1.2W globes are making me consider just having them on 12 hours a day, vs smart globes and setups that use more power when on - the overall consumption may be about the same
I use ZigBee switches throughout the house and winlight bulbs in high traffic areas, my power consumption is pretty low as far as day to day just the coffee machine which eats up electricity.
Bright daylight and cool temperatures (over 5500K) were used in behavioural experimenting and psychological torture during the cold war, nowadays they're used in offices and schools because for the very same reason: they reduce melatonin levels and make people concentrate and stay alert. Warm tones are more comfortable to stay at home and relax.
I'm not a KGB agent nor I'm working at an office so I prefer warm light ^^ it's also easy on your eyes.


MH gang as well ^^ my room has a 250W coated bulb, still haven't found a replacement for it, tubular LEDs look neat but the ones I can get aren't powerful enough and their cap is smaller -E27 vs E40-
That's pretty cool and explains why me and my partner don't like warm light when we cook or work, our living room,kitchen and bedrooms have addressable RGB. Maybe I'll look into outputting warm light out of working hours.
 
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Sadly, it's been often dreary lately where I am. You almost always need lighting in the northeast U.S. Even when we have sunny days, when it's winter!

The days are not that long yet over here, even when I'm noticing longer daylight now! (no surprise with it being almost mid-February)

I still often use incandescent here!
I'm from northern NY, two hours south of Montreal. I know what you're talking about. Flat light where you can't see a snowbank two feet in front of you, at noon.

Tungsten bulbs at least give off heat, so winter time they are beneficial (keep saying it will make it true!).
 
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I'm from northern NY, two hours south of Montreal. I know what you're talking about. Flat light where you can't see a snowbank two feet in front of you, at noon.

Tungsten bulbs at least give off heat, so winter time they are beneficial (keep saying it will make it true!).
The problem I have, are also hills and trees that block too much of the sunlight.
 
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Tungsten bulbs at least give off heat, so winter time they are beneficial (keep saying it will make it true!).
Flashback to my desk lamp shorting due to the wiring insulation melting with the heat of a small 60W bulb. They're too good at heating, RIP efficiency.

That's pretty cool and explains why me and my partner don't like warm light when we cook or work, our living room,kitchen and bedrooms have addressable RGB. Maybe I'll look into outputting warm light out of working hours.
Sounds fancy, the kind of fancy I think it could be a PITA to fix if something goes off :D

Oh, and by the way, LED bulbs with the plastic diffusers are -obviously- easier to repair than the filament type, replacing a burnt LED can be done in seconds with the right tools, same for caps and coils. The transformer usually outlasts the rest of the parts and can be recycled, depending on the output and if the surface allows you can also add extra LEDs and transform a 10W bulb into a 12 or 15W, neat trick.
If LEDs aren't available I've used 10Ω resistors before and bulbs lived for a long time, the ghetto alternative is shorting the contacts with a puddle of solder, it's not pretty but it'll be enough for a weekend until you get another bulb.
 
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Flashback to my desk lamp shorting due to the wiring insulation melting with the heat of a small 60W bulb. They're too good at heating, RIP efficiency.


Sounds fancy, the kind of fancy I think it could be a PITA to fix if something goes off :D

Oh, and by the way, LED bulbs with the plastic diffusers are -obviously- easier to repair than the filament type, replacing a burnt LED can be done in seconds with the right tools, same for caps and coils. The transformer usually outlasts the rest of the parts and can be recycled, depending on the output and if the surface allows you can also add extra LEDs and transform a 10W bulb into a 12 or 15W, neat trick.
If LEDs aren't available I've used 10Ω resistors before and bulbs lived for a long time, the ghetto alternative is shorting the contacts with a puddle of solder, it's not pretty but it'll be enough for a weekend until you get another bulb.
My house is run by my server and so far it's been pretty pita free apart from the odd issue that's been my fault. From solar, air-conditioning, lights,CCTV,windows,curtains, security and fire safety all on one Operating System (home assistant). As I've said in other threads my neices think my house is haunted, but if anything it's given me alot more free time to do other stuff.
 

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I use ZigBee switches throughout the house and winlight bulbs in high traffic areas, my power consumption is pretty low as far as day to day just the coffee machine which eats up electricity.

That's pretty cool and explains why me and my partner don't like warm light when we cook or work, our living room,kitchen and bedrooms have addressable RGB. Maybe I'll look into outputting warm light out of working hours.
that reminds me, all the lights in this house (installed before i moved in) are dual LED strips - white (9W), yellow(9W), and both (18W)

I'll shift them to yellow and see if it reduces eyestrain etc, in the bedrooms/study
 
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that reminds me, all the lights in this house (installed before i moved in) are dual LED strips - white (9W), yellow(9W), and both (18W)

I'll shift them to yellow and see if it reduces eyestrain etc, in the bedrooms/study
I'm not sure how much eyestrain their is between the two, some but I wouldn't guess alot. We perceive cool white with eyestrain but I'm not sure how much of it is placebo from our decades of using those horrible fluorescent fittings.
 

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I'm not sure how much eyestrain their is between the two, some but I wouldn't guess alot. We perceive cool white with eyestrain but I'm not sure how much of it is placebo from our decades of using those horrible fluorescent fittings.
In bedrooms, it's meant to help people sleep/rest easier
In the puter room/study, i wonder which would be best...


Edit: i am officially blind because i looked directly at these LED's as they turned on
I mentioned these a few times, and they seem to be pretty good competitors to the doobies and yet quite unknown so here we go:

3K is what i'm used to
4K used both sets of lights, i dont want to use the extra wattage (oh no, 18W)
6K right now makes everything look... blue-ish? white-ish blue ish

My roof lights:
1644483249521.png


El switcho
1644483269083.png


At this point my son switched the light on to help and burned my retinas out of my face, hence the blur
16W for 4000K (both strips) - 3 and 6 use just one side (Was the other room higher wattage? i need to check)
1644483325431.png



Unrelated edit:

"f your space has white walls and ceilings and you select a warmer hue of white, it will look warmer than if it had a dark color scheme. Conversely, if your room is predominately dark in color, you may want a cooler hue of white, so you can clearly see the room."

^ Random internet quote, makes sense. The colour lighting we want depends on our wall colour!
 
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In bedrooms, it's meant to help people sleep/rest easier

In the puter room/study, i wonder which would be best...
Yes I'm thinking of automating it so say 9pm the house goes from focus mode to relax mode and maybe gradually decrease the lumens as we hit the weight sensors on the bed

I'll give it a try when I've got a hour to mess with the automations
 
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How come we can't get hold of high efficiency LED bulbs?

20W effective for 1W; these things are over 2 times as efficient as what I can get my hands on.


They have been around since 2017

Dubai Lamp | Philips lighting
Old news really but shows what can be done when lying (at least concerning the life of their "ordinary" LED bulbs) companies are forced to do things the right way.
Do not drive LED's hard! 3V and 30mA per one is enough.
 
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The CRI of the long Phillips Alto fluorescent tubes, are easily up there with most of the better LEDs, if not better than most of the better LEDs! Run-of-the-mill LEDs, have a problem with excess blue-light!
Which Philips Altos? I can find some here but the CRI is all over the place, from 59 to 89. Fluorescent tubes I use the most are Osram 830 or a mix of 830 and 840. (It's a universal colour code, 8 means CRI over 80, and 30 or 40 is 3000K or 4000K.)
The problem of many LED lamps is actually deficiency of reds more than anything else. That's what gives fruit and vegetables and meat a weird grey colour. And high efficiency goes contrary to good reproduction of reds.
Looks like people are in fact, starting to complain about light-pollution that's associated with LED outdoor lighting! (mostly the LED street lights and LED parking lot lights)

Over here, the LED outdoor light craze, mostly started in the mid-2010s.
But why is that so? Because there are lights where previously there were none, or were less powerful? In comparison with the old and huge mercury (or even sodium) lamps, tiny diodes are easily tamed to send the light in the desired direction, like downwards, instead of everywhere.
 
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