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Rooms can be as bright as the outdoors

benkuhn.net

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Re: Rooms can be as bright as the outdoors

#21

Post by te0006 »

GuiA wrote: post #4

Every few years some company/research lab will claim they have a technology that’ll simulate sunlight coming through a window, but it still isn’t something one can buy. The moment we can buy eg a 3ft by 1ft panel that we can just mount on a wall and feels like an actual sunlit window for a few thousands dollars or so, interior design is likely going to get radically different. (And that’s not to mention the sci-fi dr…

Have a look at https://www.coelux.com/. (Not affiliated, I just like the concept. But AFAIK their 'panels' still are 50+ cm thick and outside your as well as my price range.)

Re: Rooms can be as bright as the outdoors

#22

Post by spectramax »

abakker wrote: post #16

I’ve got 5 of these in my office. https://www.superbrightleds.com/moreinfo/industrial-led-ligh... . They are fantastic. I have several more of the longer fluorescent replacements in my wood shop. More light is magnificently better for energy and productivity in pretty much all environments. I would still prefer skylights to bulbs, but these are a good solution for dark rooms.

Have you checked the CRI? Its not bad but not great either - 84 as per the specs.

There are a lot of Chinese cheap LED fixtures available on Amazon and no one seems to care about the CRI - it defines how colors appear in your room.

Re: Rooms can be as bright as the outdoors

#24

Post by nikofeyn »

knzhou wrote: post #10
asdf333 wrote: post #2

i have seen articles about excessive blue light from led bulbs being bad for your long term eyesight i wonder if this has similar problems

It can't be much worse than being under the blue sky.

this comment makes no sense. even assuming these things are equal, no one is just out there staring at the sky for hours on end for the small percentage of time the sky is actually blue.

Re: Rooms can be as bright as the outdoors

#26

Post by wyattpeak »

mangecoeur wrote: post #11

> isn't this expensive to run comparing lighting to the consumption of a fridge, which is one of the most energy intensive appliances in an average house, is kinda ridiculous. Its like saying your lawn mower energy use is just fine because it consumes the same as your SUV. Tl;dr: 2kwh per day for a light is a LOT. A standard led light would consume about 5% of that.

He states in monetary terms what it costs (30c a day), he's not obfuscating it.

That it costs a lot more than a regular light is neither here nor there (and I think anyone reading would have already guessed that).

Re: Rooms can be as bright as the outdoors

#27

Post by morsch »

Scoundreller wrote: post #3

> Isn’t this expensive to run? It draws about 2 kWh per day (assuming 8h of usage), which costs about $0.30 at typical rates. This is comparable to one day of a modern fridge or one load of laundry. Power is cheap, folks! But it will offset your other heat sources. If you live alone, you can treat it like a room heater and lower the temperature for the rest of your home. Since the bulb is radiating heat some degree o…

2 kWh is kind of nuts. Yes, it's in the same order of magnitude than the fridge and washing machine, but those already tend to be the largest consumers of electricity in a household, unless you're doing cooling or heating with electrity. And a modern fridge suitable for 2 to 3 persons will be more like 0.5 kWh per day and a load of laundry is < 1 kWh.

Re: Rooms can be as bright as the outdoors

#28

Post by galangalalgol »

Scoundreller wrote: post #5
asdf333 wrote: post #2

i have seen articles about excessive blue light from led bulbs being bad for your long term eyesight i wonder if this has similar problems

You can choose the colour temperature you want. Go for 2500K if you prefer less blue light.

The issue is that all white leds are made by shining a blue led at a yellow phosphor. Rhe blue and yellow balance to whatever temp you pick, but it is still a lot of blue.

Re: Rooms can be as bright as the outdoors

#29

Post by ComputerGuru »

spectramax wrote: post #22
abakker wrote: post #16

I’ve got 5 of these in my office. https://www.superbrightleds.com/moreinfo/industrial-led-ligh... . They are fantastic. I have several more of the longer fluorescent replacements in my wood shop. More light is magnificently better for energy and productivity in pretty much all environments. I would still prefer skylights to bulbs, but these are a good solution for dark rooms.

Have you checked the CRI? Its not bad but not great either - 84 as per the specs. There are a lot of Chinese cheap LED fixtures available on Amazon and no one seems to care about the CRI - it defines how colors appear in your room.

CRI is the real key. A lot of manufacturers have cut back on quality in the war over pricing. Philips had the very best consumer LEDs then started pushing their “SlimStyle” garbage with a CRI of barely 75. Amazon is littered with products advertising CRI “over 90” but in reality are probably barely breaking 80.

Re: Rooms can be as bright as the outdoors

#30

Post by RussianCow »

spectramax wrote: post #22
abakker wrote: post #16

I’ve got 5 of these in my office. https://www.superbrightleds.com/moreinfo/industrial-led-ligh... . They are fantastic. I have several more of the longer fluorescent replacements in my wood shop. More light is magnificently better for energy and productivity in pretty much all environments. I would still prefer skylights to bulbs, but these are a good solution for dark rooms.

Have you checked the CRI? Its not bad but not great either - 84 as per the specs. There are a lot of Chinese cheap LED fixtures available on Amazon and no one seems to care about the CRI - it defines how colors appear in your room.

For those like me who didn't know what CRI is, it stands for color rendering index, and appears to represent how well the colors of things appear when lit by a light source.

[0]: https://en.m.wikipedia.org/wiki/Color_rendering_index

[1]: https://en.m.wikipedia.org/wiki/High-CRI_LED_lighting

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