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[TheBlaze] Light Bulb Ban Kicks in on January 1 - Page 31  

post #301 of 328
Would the 60w Cree's work well for room light, with a 2 bulb ceiling fixture?
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post #302 of 328
Quote:
Originally Posted by Selquist979 View Post

Would the 60w Cree's work well for room light, with a 2 bulb ceiling fixture?

That would depend on the fixture. As long as it is enclosed and well diffused or open and depends on bounce, I don't see why not. Where it will not work well is a fixture where the bulb can be seen or needs to be fully omnidirectional.
     
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post #303 of 328
Quote:
Originally Posted by Clazman55 View Post

Thank you for bring in the light pollution angle. I'd much rather that be the focus of the argument then energy efficiency.

Energy efficiency is a wholly silly argument to make when it wouldn't be an issue if we had put serious effort and money to actually build enough modern nuclear reactors.

So, you should not strive for a more efficient "system" (bulb might be cheaper, using it is not over its lifetime) if you had cheaper electricity?
Btw, cheaper, is relative. When a "modern nuclear reactor" requires tenths of billions for initial investment, utility companies prefer to use their ol "tungsten filament" (read coal or natural gas) than invest in something with so much overhead. Plus, the nuclear race is kinda over, and they don't get the Gov to support/subsidize nuclear energy production as a part of a uranium enriching scheme.
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post #304 of 328
Quote:
Originally Posted by Lady Fitzgerald View Post

That would depend on the fixture. As long as it is enclosed and well diffused or open and depends on bounce, I don't see why not. Where it will not work well is a fixture where the bulb can be seen or needs to be fully omnidirectional.
Agreed. I have 4 Cree 60w in the ceiling fan in my kitchen with up-firing fixtures. The glass is hazy, so you can't see the bulb, but it is open on the top. The Cree's work well in that fixture.

Oddly enough, in my opinion, my Feit 100w equiv BR40 LED floods have a better quality light than the Cree 60w A19 style even though they are both 2700k.
 
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post #305 of 328
Quote:
Originally Posted by DanNEBTD View Post



These are also at home depot . . .and handle much beter on dimmers with smooth fade up/down than the ecosmarts. . . cheap as well

I tried the Cree bulb as well, unfortunately its design is such that the heatsink at the base creates a large dark spot on my wall from my horizontal fixture. the smaller central point of light the cree bulb is designed with also created a shadow from the second socket in my fixture. as such i was unable to use the cree bulb to properly light my room
post #306 of 328
LEDs are just barely out of their infancy, not quite walking yet. CFLs had a similar rocky start (and there are still some out there that aren't worth the packaging they come in). It's just a matter of time before LEDs improve to where they are as versatile as incandescents were.

LEDs won't really shine (pardon the pun) until homes start being wired with regulated low voltage lighting circuits eliminating the needs for "bulbs" with individual electronic packages. It's those electronic packages are what limit the practicality of LEDs.
     
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post #307 of 328
Quote:
Originally Posted by Lady Fitzgerald View Post

LEDs won't really shine (pardon the pun) until homes start being wired with regulated low voltage lighting circuits eliminating the needs for "bulbs" with individual electronic packages. It's those electronic packages are what limit the practicality of LEDs.
The biggest issue with LED right now is user acceptance due to the look of the bulb. They can easily fix all the dead spots by moving the LEDs around in different angles, but that will cause the bulb to look weird. People don't like weird. We want bulbs generally to resemble a traditional incandescent. Those LEDs with kind of a mushroom top, do seem to perform better in a true omni-directional configuration but again, they look weird, especially when they have a yellow/orange look to them with the light off.
 
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post #308 of 328
Quote:
Originally Posted by Angrybutcher View Post

The biggest issue with LED right now is user acceptance due to the look of the bulb. They can easily fix all the dead spots by moving the LEDs around in different angles, but that will cause the bulb to look weird. People don't like weird. We want bulbs generally to resemble a traditional incandescent. Those LEDs with kind of a mushroom top, do seem to perform better in a true omni-directional configuration but again, they look weird, especially when they have a yellow/orange look to them with the light off.

Actually, cost is what is turning people off LEDs more than anything else; many of the responses in this thread support that. As far as weird goes, CFLs are about as weird looking as they get. I kid around about the C meaning curly instead of compact.

One reason that LEDs tend to be so directional is the individual LEDs are placed on a flat PCB (Printed Circuit Board). Many 12v LEDs intended for automotive and RV use have the LEDs arranged on smaller PCBs arranged cylindrically with a small PCB on the end to give more omnidirectionality to the bulb. Something like that in a 120v LED using a standard envelope like found on A19s or A15s would be superior to most out there now. The big reason that isn't done is cost; it's more expensive to make something like that.

Phillips was supposed to release a new type of bulb exclusively at Home Depot on 01/02/2014 that had the individual LEDs arrange in a torus covered by an envelope that looked like someone partially melted and flattened an A19 (talk about weird looking) but I didn't see it when I was at Home Depot yesterday. Based on a video I saw, it gives more omnidirectionality than any other LEDs I've seen so far but, in an enclosed fixture, it still leaves two narrow shadow band. That wouldn't be so bad if one could determine where the shadow bands landed but one is at the mercy of how the bulb and fixture were made, which would be random at best. Still, it means manufacturers are working to address the directionality issue. What is getting in the way the most is the bulky electronics package that converts the 120V to a lower, regulated DC voltage that is compatible with the LEDs.
     
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post #309 of 328
Quote:
Originally Posted by Lady Fitzgerald View Post

LEDs are just barely out of their infancy, not quite walking yet. CFLs had a similar rocky start (and there are still some out there that aren't worth the packaging they come in). It's just a matter of time before LEDs improve to where they are as versatile as incandescents were.

LEDs won't really shine (pardon the pun) until homes start being wired with regulated low voltage lighting circuits eliminating the needs for "bulbs" with individual electronic packages. It's those electronic packages are what limit the practicality of LEDs.

What i would like to see, at least for older homes, Is replacement light fixtures that incorporate LEDs directly. since the LEDs themselves theoretically never need replacing (or at least last much longer), if you weren't limited so severely by the size of a standard lightbulb you could make an entire fixture that would be both cheaper to make (no miniaturization) and last longer because you could incorporate better thermal management solutions into them
post #310 of 328
Quote:
Originally Posted by Nemesis158 View Post

What i would like to see, at least for older homes, Is replacement light fixtures that incorporate LEDs directly. since the LEDs themselves theoretically never need replacing (or at least last much longer), if you weren't limited so severely by the size of a standard lightbulb you could make an entire fixture that would be both cheaper to make (no miniaturization) and last longer because you could incorporate better thermal management solutions into them

Actually, they are already out there. I've seen many showcased on This Old Mansion House.
     
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i7-5930K Haswell-e Asus X99-E WS/USB 3.1 Visiontek Radeon 7870 2GB with 6 miniDisplayports G-Skill Ripjaws 64GB (8x8GB) DDR4 2133 
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Samsung 850 EVO 4TB SSDs Samsung 950 Pro 512GB m.2 SSD boot drive Noctua NH-D15S Cpu cooler Win 7 Ultimate 
PowerCaseMouseMouse Pad
Corsair AX760 Scratch built. Currently under construction at ... Logitech M525 El Cheapo Allsop hard plastic 
CPUMotherboardGraphicsGraphics
i7-3930k ASUS P9X79 WS MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB... Monoprice 1x2 powered HDMI Splitter 
RAMHard DriveHard DriveHard Drive
Kingston HyperX 32GB (8 x 4GB) 240-Pin DDR3 SDR... 128GB Samsung 840 Pro SSD 4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD 
Hard DriveHard DriveOptical DriveCooling
4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD LG 12X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Inter... COOLER MASTER GeminII S524 120mm Long Life Slee... 
OSMonitorMonitorKeyboard
Windows 7 Ultimate 3 x Asus VG248QE Vizio VO320E 32" TV Logitech G510s 
PowerCaseMouseAudio
Corsair HX750W Antec Two Hundred v2 Logitech M525 with Unifying Receiving Corsair SP2500 2.1 Speakers 
AudioOtherOtherOther
ASUS Xonar Essence STX Virtual 7.1 Channels 24-... LSI 9211-8i HBA card HooToo® HT-CR001 3.5" PCI-E to USB 3.0 Multi-in... StarTech HSB220SAT25B 2 Drive 2.5in Trayless Ho... 
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CPUMotherboardGraphicsRAM
i7-5930K Haswell-e Asus X99-E WS/USB 3.1 Visiontek Radeon 7870 2GB with 6 miniDisplayports G-Skill Ripjaws 64GB (8x8GB) DDR4 2133 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 4TB SSDs Samsung 950 Pro 512GB m.2 SSD boot drive Noctua NH-D15S Cpu cooler Win 7 Ultimate 
PowerCaseMouseMouse Pad
Corsair AX760 Scratch built. Currently under construction at ... Logitech M525 El Cheapo Allsop hard plastic 
CPUMotherboardGraphicsGraphics
i7-3930k ASUS P9X79 WS MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB... Monoprice 1x2 powered HDMI Splitter 
RAMHard DriveHard DriveHard Drive
Kingston HyperX 32GB (8 x 4GB) 240-Pin DDR3 SDR... 128GB Samsung 840 Pro SSD 4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD 
Hard DriveHard DriveOptical DriveCooling
4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD LG 12X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Inter... COOLER MASTER GeminII S524 120mm Long Life Slee... 
OSMonitorMonitorKeyboard
Windows 7 Ultimate 3 x Asus VG248QE Vizio VO320E 32" TV Logitech G510s 
PowerCaseMouseAudio
Corsair HX750W Antec Two Hundred v2 Logitech M525 with Unifying Receiving Corsair SP2500 2.1 Speakers 
AudioOtherOtherOther
ASUS Xonar Essence STX Virtual 7.1 Channels 24-... LSI 9211-8i HBA card HooToo® HT-CR001 3.5" PCI-E to USB 3.0 Multi-in... StarTech HSB220SAT25B 2 Drive 2.5in Trayless Ho... 
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Overclock.net › Forums › Industry News › Technology and Science News › [TheBlaze] Light Bulb Ban Kicks in on January 1