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Office Building Lit By 100% LED Light

treehugger.com — An example of an entire office building that has been converted to 100% LED light. The new bulbs consume 48% less energy than those they replaced. Also, air conditioning needs will be reduced in the summer, since the bulbs give off much less heat.

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  • tuzziel, on 11/10/2007, -9/+15Thats nice, now, when they start using those for my monitor backlighting?
    • subxero37, on 11/09/2007, -1/+9Some manufacturers already have.
    • TomFrost, on 11/10/2007, -2/+29The best option is for your monitor to not NEED backlighting. Rather, the monitor's display would be *made* of LEDs. Look up OLED displays :)
      • BossKey, on 11/09/2007, -1/+7Have they solved the problem of OLED colors not holding up well over time (fading and shifting)? If they haven't solved that, it would cross OLEDs off the list of anybody doing color-accurate graphics work.
        • ayeroxor, on 11/09/2007, -0/+2Which is at least 0.0021 percent of computer owners.
    • inkyblue2, on 11/09/2007, -3/+16i'm going to blatantly hijack this thread for informational purposes. the office in the article belongs to... surprise, cree! cree is an LED company that makes insanely bright LEDs. their current top of the line XR-E LEDs are *incredibly* bright. as far as i can tell they're the brightest LEDs out there, or at least the brightest ones that you can actually buy from a distributor.

      to buy the LEDs individually, this is the best place i've found:
      http://www.cutter.com.au/proddetail.php?prod=cut65 ...
      and here's a place that sells flashlights based on cree and other high-power LEDs:
      http://www.fenix-store.com/

      seriously, these things have come a lot farther than you might expect in the past few years. i'm posting all this crap because i was blown away when i started looking into replacing headlights with LEDs. lots of people are building battery powered bike lights with crees; search for "cree beam shots" for some ideas of what they look like.

      for home lighting, it seems like the best place to start is with HD11 and HD16 replacement bulbs. see the cutter link.
    • supermanred, on 11/09/2007, -6/+1Macbooks already do as of the last update. The batteries last a lot longer apparently, mine is still flourescent tubes and battery only lasts around 4 hours.
      • BossKey, on 11/09/2007, -0/+4Wrong. MacBooks still use CCFLs.

        It's the MacBook *Pros* that use LED backlighting, and that's only the 15" model. 17" panels are not yet available, so the 17" are still LEDs.

        It is also important to understand that there are 2 types of LED backlights. One uses white LEDs only. This is the type used in lower-end displays like laptops. The other type of LED backlight uses separate red, green, and blue LEDs. This type is more expensive, but the advantage is that you get an insane amount of control over color accuracy, and some of the most ginormous color gamuts ever seen in a monitor. Simply amazing stuff. Here is a review of such a monitor:
        http://www.tomshardware.com/2005/10/28/a_revolutio ...

        LEDs are just the right thing to do any way you look at it.
      • DMCer, on 11/09/2007, -0/+2"and that's only the 15" mode; 17" panels are not yet availablel"..."so the 17" are still LEDs"

        I see a contradiction there...
    • InfiniteNothing, on 11/09/2007, -1/+2Replacing the sodium vapor lights: holy light pollution
      • inkyblue2, on 11/09/2007, -0/+4not even LED is as efficient as sodium vapor. those things are still king of the hill when you care about efficiency more than color.
  • Osuperman, on 11/10/2007, -6/+57Great idea but they need to turn them down a bit... they look like they would hurt my eyes after 5 minutes.
    • Smwbigboss, on 11/11/2007, -5/+39I see you never leave the basement either.
    • coldphoenix, on 11/09/2007, -1/+10It might also simply be due to the exposure. The photograph might simply be making the scene brighter than it actually is, which is often the case.
    • NeonElixir, on 11/09/2007, -6/+2I like LED lighting, but the excessive brightness makes me uncomfortable.
      • Charlotte_Web, on 11/11/2007, -1/+11It's the pure white light that's hard on your eyes. Look at the Before and After picture, and you can see the difference. The soft, yellow light is easy on the eyes; the harsh, white light is great for taking a photograph, but I'd hate to have to spend a lot of time in it.
      • DavidBGie, on 11/09/2007, -0/+6If they dim the blue portion of the LED then the light will become "softer" or more yellow. In the future I think that there will be many color temps available in LEDs. Imagine a dimmer control that allowed you to dim red, green and blue separately. Then you can have ANY color and brightness of light that you want.
        • justAnother9, on 11/09/2007, -0/+2It would be pretty cool to see an RGB light switch. Maybe they could also sell lights that are preset to a certain color? I don't really know much about how LED lights work, but the figures they give in the article sound pretty good to me.
    • Nerys, on 11/09/2007, -1/+2HOPEFULLY they used the SAME shutter and aperture for both pictures meaning it wont look that bright in person just "that much brighter" than the CFL's So if they use the proper settings for the CFL the LED's would look over exposed but thats the only truthful way to do this IE don't change the camera and have it on manual. Otherwise you can make it look like anything you want.
    • greeninoregon, on 11/10/2007, -1/+2I hear florescent lights are really bad for your eyes. I know some people who get headaches from being under them too long.
  • Bricks, on 11/09/2007, -12/+4Where's the MAKE article showing how to convert them to sweet blue LEDS?
  • fuzzmeister, on 11/10/2007, -7/+34Assuming the light they are producing is full-spectrum, it would be great to have LEDs instead of fluorescents/incandescents. However, if it's just a harsh white light, that would be annoying as hell.
    • ReapZor, on 11/09/2007, -11/+3right, because white isnt the inclusion of all visible light...
      • InfiniteNothing, on 11/09/2007, -2/+10there's a difference between white made of Red Green and Blue and white made of the full rainbow of spectra. The former can make certain things (like people) look a little funny because, for example, an article of clothing is good at bouncing back yellow but not red and green. In this case, a normal white light like the sun or a halogen bulb would light this shirt up but the shirt would be dim under the red, green, blue light.
    • zachlac, on 11/09/2007, -0/+1That's the problems with LED lighting...it's much harsher than normal incandescent lighting. However, a breakthrough has just been made in this very category, but it's obvious that this office didn't use it...working there would suck.
  • nerdmods, on 11/09/2007, -9/+27LEDs actually do not seem to hurt my eyes as much as other lights, as they are more constant, its the BLINKING that gets to me.
    • HouseFan, on 11/09/2007, -0/+16"white" LED is actually more close to our definition of white [light] colour (sun at noon ~ 5400 Kelvin). Fluorescent lamps have a higher K (around 6.000) and the colour is always changing (between greenish to blueish during very small cycles [hz]).
      Also, LED bulbs do not emit UVA/UVB like fluorescent lamps.
      • SteelFrog, on 11/09/2007, -0/+2Wow - a relevant, informative post on Digg. Thumbs up to you, sir.
        Oh hey look, a flying pig!
    • kevnaca, on 11/09/2007, -0/+3True, I have to increase the refresh rate of CRT monitors to 70+ hz because after using LCDs the flickering gets to me now.
  • JenadaeXX, on 11/09/2007, -12/+5My office only uses a 30% LED light.
  • exomni, on 11/09/2007, -11/+10Crazy.

    You know the bright white rooms in movies set in the future? It's coming...
    • supermanred, on 11/09/2007, -0/+9The future will be a lot darker than in the movies I think.
  • jayhawk, on 11/09/2007, -13/+8are there LEDs that can fit into a typical light socket? what about into a typical florescent fixture? if not, i think this conversion process will take a long, long time for homes and businesses.
    • PleaseJustDie, on 11/09/2007, -0/+5yes, they make LED bulbs (they look like round platters stacked on each other with LED lights all around them) that will screw into standard fixtures. Mythbusters used one as part of the myth that it costs more energy to turn lights on and off versus just leaving them on if you leave a room for a short period of time. LED light was much brighter than any other bulb and used a nearly unmeasureable amount of energy in either the on test or the on/off test.
  • Lindane, on 11/09/2007, -15/+4Come on. After all this crap with the Chinese, is that what we need? More led? This is just retarded.
  • Buelldozer, on 11/09/2007, -10/+3"The company claims that their lights render the same type of light that is produced by fluorescents or incandescents."

    Excuse me?
    • CoryDambach, on 11/09/2007, -0/+4What part do you not understand? Or are you alluding to some technical discrepancy implied by their words?
    • shadowblade989, on 11/09/2007, -0/+1I personally noticed that just above where that is said, they have a dramatically different picture of the same space. Obviously different lights.
    • Nerys, on 11/09/2007, -0/+1More light over exposing the picture. IE brighter. the brighter the white light the "more white" it looks thats all.
  • dawhitie, on 11/10/2007, -10/+46All I know is I hate drivers that use LED lights... blinding
    • NiGHTSChao, on 11/10/2007, -2/+41This comment was created for everyone who thought (at first), that dawhite was talking about computer parts
    • inkyblue2, on 11/12/2007, -5/+9you mean HID?
    • Typhoon2009, on 11/09/2007, -6/+6AFAIK only the Audi R8 has LED lights... you must live in a nice neighborhood
      • dawhitie, on 11/10/2007, -1/+7you can buy after market as well
      • krnldmp, on 11/12/2007, -1/+1Those are short arc lamps, kids. No point source LED is capable of that much output yet. And yes, unless you want a HUGE reflector, you need a point source.
      • kevnaca, on 11/12/2007, -0/+4The Lexus LS Hybrid has LED headlights. But I'm guessing you really mean Xenon lights on luxury cars.
    • InfiniteNothing, on 11/09/2007, -6/+5LED tail lights blink in sync with the spark plugs. Very annoying!
      • KLowD9x, on 11/12/2007, -0/+11Uhh, no they don't.

        Thats called "Pulse Width Modulation". That is how they adjust the brightness of the lights from "not braking" to "braking."
      • krnldmp, on 11/09/2007, -0/+6Where do people come up with this *****.
    • Nerys, on 11/09/2007, -3/+12First you talking about HID lights for headlights. And second your not even talking about HID as HID is a PLEASURE to look at. I can stare RIGHT INTO one (from an off angle) and clearly see the glass NO GLARE. what your talking about is the FAKE HID lights ie the "blue lights" people swap into there halogen fixture to "be cool" those suck those hurt and are illegal for good reason.

      They are working on LED headlights. Not yet though.
      • dawhitie, on 11/09/2007, -1/+3No Audi came out with LED lights, research it. They suck to look at.
  • Anub1s, on 11/10/2007, -10/+5"When LEDs replace incandescent bulbs, there is also the added advantage of reducing AC requirements in the summer." That kind of says that they'll need to spend more on heating bills in the winter doesn't it? What's more expensive? Electricity or gas to use in the furnaces?
    • supermanred, on 11/09/2007, -0/+4Yeah, because when your home heater doesnt work your incandescent bulbs heat you up just fine... uh....NOT!

      The heat produced by lightbulbs is miniscule as far as heating your home.

      However, I can attest that the heat given off by a macbook power cube is awesome in winter. I put mine somewhere near my feet under the sheets at night in summer. :)
  • sparkysko, on 11/09/2007, -9/+21Hurray. Digg is now reddit + 8 hours.
    • supermanred, on 11/09/2007, -6/+3(bart simpsons voice) Well, if Reddit is so good why don't you marry it? (/bart simpsons voice)
    • lordtyros, on 11/09/2007, -0/+1Nah, reddit's frontpage is just a subset of digg. We update our links more than once a day.
  • NiGHTSChao, on 11/09/2007, -3/+37I love how nearly everyone in this article is being buried for saying stupid things, myself included probably
  • MasterChi, on 11/09/2007, -12/+3"air conditioning needs will be reduced in the summer, since the bulbs give off much less heat."

    Thats a dumb reason, by that logic heating needs will be reduced in the Winter, since Bulbs give off much more heat then LEDs.
    • rockdawg, on 11/09/2007, -3/+7This nation has mulitple weather zones not all areas have "winter".
      • MasterChi, on 11/09/2007, -5/+2And again by that logic "this nation has multiple weather zones not all areas have a hot summer, some are nice and cool"
      • Nerys, on 11/09/2007, -0/+1Point is the lights are no longer heaters. all that heat is now being used to make LIGHT instead. Conservation of Mass and energy more efficiency will always net you a positive gain.
    • NiGHTSChao, on 11/09/2007, -3/+2*cough* arizona...*cough*
      • MasterChi, on 11/09/2007, -5/+1*cough michigan....*cough* (for example of cool summers being in 60's to 70's)
        • NiGHTSChao, on 11/09/2007, -0/+3:/ In Phoenix (Arizona), we're lucky to even hit 80 in winter now-a-days
          • PleaseJustDie, on 11/09/2007, -0/+2I have a friend from Wisconsin that calls during the winter to talk about how during this storm with wind chill its almost -30, etc. The reaction and usually the "***** You" I get when I tell him how cold it is here in Arizona and how we got all the way down to 65 is just priceless.
        • redmaxx, on 11/09/2007, -0/+2So?
        • Nerys, on 11/09/2007, -0/+2cool my ass I was in michigan this summer (almost to the canadian border) and its damned well was hot enough :-) (Kalamazoo and Delton)
      • redmaxx, on 11/09/2007, -2/+1wrong reply button clicked...
  • grrrrrrrrrrrrrr, on 11/09/2007, -3/+11They should build another headquarters, they'd probably double their market share
  • proliance, on 11/09/2007, -3/+5The colors in the room seem to go from green to blue. Gotta wonder which is the correct color.
  • aflaks, on 11/09/2007, -10/+2Do they want a pat on the back?
    • connis, on 11/09/2007, -1/+5A rightfully earned pat. We don't need to consume energy wantonly just 'cause we can.
  • skoot, on 11/11/2007, -1/+15I'd love to replace my fluorescent bulbs w/ LED – but they're like $30+ each for decent illumination. Gotta wait till Costco gets the bargain batch.

    http://www.google.com/search?hl=en&q=led+light+bul ...
    • joshuaer, on 11/09/2007, -2/+10Do the math it is cheaper, I know is sucks to buy them I just got 2 more today i get 2 every month i only have 4 lights left until i have all LED lighting my place.

      Life Span & Energy Consumption Benefits of LED Light Bulbs vs. Incandescent Light Bulbs

      Incandescent 60 Watt Light Bulb CC Vivid 2 Watt LED Light Bulb

      How long will the light bulb last? 1,000 hours Up to 60,000 hours

      Number of bulbs used
      over 60,000 hour period 60 1

      Bulb Cost
      Per 60,000 hours $40.20 (60 bulbs at 67¢ each) $15.00 to $35.00

      Electricity Usage
      kWh of electricity used over 60,000 hours 3600 kWh 120 kWh

      Cost of Electricity
      60,000 hours at 10¢ per kWh $360.00 $12.00

      Total Cost
      After 60,000 hours $400.20 $46.95

      Total Savings:
      Money saved by installing one CC Vivid LED Light Bulb Save $353.25 Per Bulb!
      • Nerys, on 11/09/2007, -0/+2Where do yo get these 60watt replacements ? and how long are they holding up for you? I find quality control and reliable reaquisition (IE being able to get them again in a few months) to be a problem.
      • jm1234567890, on 11/09/2007, -0/+1But if you compare with CFL's then they probably cost more.
      • LordPengwin, on 11/09/2007, -0/+1But what about the brightness, all the the led lights that i've looked at had very low lumen ratings as compared to their halogen counterparts.
    • HouseFan, on 11/09/2007, -0/+2LED bulbs last up to 5 times more than fluorescent lamps. Perhaps it's not that expensive in the end.
      • Nerys, on 11/09/2007, -1/+2more like 16 times. Typical life for white led is 80,000 hours typical for CFL is 5000 hours and how many of you have had CFL's last that long. I have but its rare.
  • rockdawg, on 11/09/2007, -6/+2Awesome read tottaly dugg it! :-)
  • gjscds, on 11/09/2007, -10/+3I'd love to save the earth as much as the next guy, but CF bulbs put out crappy light. The color hue (temperature) is just all wrong. And these LCDs (at least in the picture) seems to be too blue-ish.

    Further, CF bulbs contain mercury. Since when's that good for our environment?
    • ReapZor, on 11/09/2007, -1/+3L...E...D
    • Elliuotatar, on 11/09/2007, -3/+3I tried to replace my bulbs with CFL bulbs. I bought one bulb, it had really blue light, didn't have instant on. I trid another... and another... and another... Eventually tried, and returnsed about six different bulbs. Every brand that was available in every supermarket and hardware store locally. Not one put out light which was anywhere near incandescent or even the "natural white" bulbs I use which put out light which is closer to natural sunlight than regular incandescents.

      So the current state of the art sucks ass.

      Oh and the bulbs wouldn't fit in the dome in my kitchen, bathroom, or bedroom either, so there'd be exactly two bulbs in my apartment I could actually replace.
      • luchid, on 11/09/2007, -0/+1I'll copy and paste ReapZor's comment, since neither of you has bothered to read the article:

        L...E...D

        And yes, CFLs blink a lot and produce funky looking light. LEDs do not.
        • Elliuotatar, on 11/09/2007, -0/+1I read the article, I was simpyl replying tho his comment about CFL's.

          As for LED's... I haven't tried them, but all the LED flashlights I've seen put out rather blue light. I don't know if that applies to the LED's used in lamps though. But maybe I will look into those if I can find any in local stores and see how they look.
      • Nerys, on 11/09/2007, -0/+2Where are you buying your bulbs the dollar store ? seriously thats the only place I can find crappy green blue bulbs. Go find a family dollar and buy there $5 13 watt CFL from sylvania and it comes with a 5 year warranty. TOTALLY warm light and instant on. INDISTINGUISHABLE from a 60-75 watt incandescent. In fact I have some mixed in a fixture with CFL's and NO ONE has ever guessed properly which is incandescent and which is CFL.
        • Elliuotatar, on 11/09/2007, -0/+1No, I am not buying bulbs at the dollar store. I bought them at Home Depot, two different supermarkets, and Wal*Mart. I also researched the hell out of them, and found research papers which indicated the brands that lasted the longest and output the best light.

          Sylvania if I remember correctly was near the top of the list, and was one of the bulbs I tried. They were much better than the ones from Wal*Mart, but they still sucked compared to incandescent. The light they produced was like the cheap flourescent bulbs we had in my school when I was a kid, and had a tint to it. I think the sylvania bubs had a pink tint. The others had blue or green tints. The Home Depot bulbs I bought came in a number of color temperature, but even the "white" ones were still blue, and the "daylight" ones were awful compared to the daylight incandecent bulbs I have.

          I bet you haven't even tried any bulbs other than the sylvania ones, or have not compared them side by side with the incandecent. Or maybe you're just a shill for them.

          Believe me, I wanted to like the bulbs. I wouldn't have gone to all the trouble to research and compare them. But there's a very obvious difference and if you can't see it, you're like those people who can't tell if their HDTV is actually displaying an HD signal, and simply believe it to be sharper than their old set.
          • HappyScrappy, on 11/09/2007, -0/+1Get the n:vision bulbs. They're available at Home Depot. They're instant on (meaning under a half second), they even work in cold temperatures, and they're available in 3 color temperatures.

            You will find the daylight ones are VERY blue. It's accurate, and also useless for many interior spaces. I use the middle color most of the time because I find the incandescent ones to be too yellow.

            They're very good. Try them out. Cheap too.
    • HappyScrappy, on 11/09/2007, -0/+1Where exactly do you think mercury comes from? Mars? It comes from our environment. I don't get the excitement.

      I'm not allowed to throw out a lightbulb with less than 1 milligram of mercury in it, even though our local landfill is on the site of a former mercury mine. EVERYTHING around here is named either "Alamaden" (the name of the mercury mines here and in Spain) or "Cinnabar" (the name of the ore mercury is extracted from).

      The mercury threat from fluorescent lamps is typically VASTLY overstated.
  • Typhoon2009, on 11/09/2007, -1/+8I'd love some LED lighting in my house; bloody expensive though.
  • noumuon, on 11/09/2007, -4/+4depending on where it is, the amount of heat given off by the light bulbs is negligible in regards to keeping the place cool in the summer.
  • kick, on 11/09/2007, -5/+2That looks like pretty harsh lighting. Is there softer LED lighting available?
    • TheOther1, on 11/09/2007, -0/+2You can get them in different K ratings. 3000K = warm white, 6500K = cool white. Some brands also offer frosted or clear lenses.
  • jessecrouch, on 11/09/2007, -3/+1bad light color and too harsh - not that flourescents are much better, but i'd much rather see an example where LEDs are used to create the warm glow of an incandescent or candle.
  • haargerman, on 11/09/2007, -0/+1Where are my sunglasses?
  • diggingaround, on 11/09/2007, -5/+3
    Energy usage is down and employee suicide rate is up...
    Seriously ... I love LED gadgets... but not for home/office lighting purpose.
    LED produces monochromatic light and it will drive you nuts.
  • jaewon223, on 11/09/2007, -0/+2I replaced all my bulbs to energy efficient ones and now it's much brighter, saves energy, makes me greener, and it isnt as hot. It might be more expensive although mine weren't that much more in comparison to regular bulbs but they last I believe 5x longer. Why wouldn't you want to use these bulbs???
  • centran, on 11/09/2007, -0/+12Someone needs to make an inexpensive LED lightbulb and do it soon. I am not sure how much the new powerful LEDs cost but the standard LEDs you can get for ~.10. You need about 60 of those so that is $6. Then there is mounting and circuitry.
    However, If you are mass producing these things it should be really cheap to make and you can probably use the new super LEDs that came out a year ago so you don't have to pack 60 in.
    I don't think GE and other companies likes the fact of you being able to have a lightbulb that can be on for 10 years so they are going to literally kill any company that attempts to make them. Plus it doesn't make sense in todays commercial world to give people a product they don't have to replace for more then 10 years. Bad business model.
    But damnit! I have been waiting for LED lightbulbs for a long time now.
    • Nerys, on 11/09/2007, -0/+2you need more than 60 man. I used 1600 of them to light my room :-) 8 tubes with 196 leds in each plus a few lamp fixtures. I get them $20 a pop in bulk. They have problems which I use a Variac To solve (over driven I have to lower the voltage) Its coming won't be long soon though its coming.
  • TheBuzzKiller, on 11/09/2007, -4/+0I wonder what's gonna happen when we have all these little plastic nubbies that have died sitting in a landfill ... I'm pretty sure at least the red one's contain arsenic ... I can't even spell the other chemicals I've read that they contain ... oh well ... it's still better than the resistor bulbs I suppose.

    I'd like to get some fixtures that contain those RGB leds so you can set your desired color temperature .... that'd be super shweet
    • NiGHTSChao, on 11/09/2007, -1/+1break em down and snort em
      killer high dude
  • gtg207u, on 11/09/2007, -3/+0AHHH!!! It's an entire terrorist building!!!11! We have to get the Chicago PD in there to blow it up before that building martyrs itself!
  • djohnmalkovich2, on 11/09/2007, -5/+1Title: How to change an office into a tanning saloon.
  • HappyScrappy, on 11/09/2007, -6/+1LEDs are not more efficient than fluorescent lamps. I don't see the point.
  • scooby2, on 11/09/2007, -0/+3What is the best place to buy led bulbs? I bought in to CF when they first started ($$$) and its time to move to led.
  • hokie47, on 11/09/2007, -1/+3LEDs lower your sperm count!
    /Drunk
  • Kwiter, on 11/09/2007, -0/+2My little girls use the hall light as a night light. I saw the CFL's and installed one in that fixture as it WAS a 60 watt and now is a 15 watt. The Color is annoying but the savings I hope is worth it since that light tends to be on from 7 pm to about 5 am daily. Mrs first response when she came home and saw it on..."Whats wrong with the light upstairs" ;-) These LED's any better at getting similar look to incandescent?

    Nia:wen kowa Thank you very much
    • waydee, on 11/09/2007, -0/+1Check the colour temperature of the CFL you bought. 2700K (or thereabouts) is a very close light to that you get from an incandescent, "warm white". 6400K CFL's are pretty common too and give off a much harsher, whiter light that can be quite annoying in some places.
  • aussiebuddha, on 11/09/2007, -0/+1There are many BINs for leds with different colors.
    Cree used that particular color because that what they were looking for.
    for more info on LEd lighting go to www.candlepowerforums.com those guys know this stuff.
  • suckaPU, on 11/09/2007, -1/+6LEDs are the future of lighting, so get used to it, y'all.
    • krnldmp, on 11/09/2007, -0/+3I was just about to say that. Lots of poo pooing going on in here from people that don't really know how far LED technology has come and how much further it can go.
  • khyberkitsune, on 11/09/2007, -0/+1Can't wait for better growing LEDs in focused red and blue spectrum. Then it won't cost jack to bring my more fragile herbs (like sage, spearmint, catnip, thyme, oregano, etc) indoors and I can keep growing them thru the wintertime.
  • Bahimiron, on 11/09/2007, -0/+2As someone who did outside sales for a company that sells these sorts of lights, I can say that while customers are always very impressed with the long life and energy efficiency of LED bulbs, as well as the long-term cost-effectiveness of them, when it comes down to immediate price point it becomes a very hard sell. For instance, the little 60w bulbs in an exit sign might have to be changed every six months, but they only cost .90 cents. The LED retro for them will probably never have to be changed again, but it costs $11. To a facilities manager in a building with a hundred exit signs, that's the difference between dropping a grand all at once or just under two hundred bucks a year. Sure, in five years he's made back the money, not to mention the hidden costs of paying their maintenance guy the time for changing a hundred bulbs, but this is just one of those situations where the manager is looking at a yearly bottom line, not a ten year bottom line.
  • rholland356, on 11/09/2007, -0/+0"Lit by 100% LED light". Well, I should certainly hope so!
    Although over on the island of Dr. Moreau, they've lit their offices with a 40% LED/60% firefly light. Early experiments with 70%LED/30% glow worm were not as successful.
  • Rhenthalin, on 11/09/2007, -0/+1But the light is so harsh! How can i possibly sleep at my desk if its that bright:^(
  • jondo85, on 11/09/2007, -0/+1I read a while ago about a "blue light hazard", which some LEDs can be prone to when used for large scale lighting. Wonder if the people who installed those lights know about it.
  • kinggimped, on 11/09/2007, -0/+1About sodding time.
  • Bigbro69, on 11/09/2007, -0/+2Don't let the Boston PD find out about this...
    • brisbin33, on 11/09/2007, -0/+1dugg because im in boston and those were good times
  • bdbElysian, on 11/09/2007, -0/+1Fantastic .. I wonder how many years it'll take for this to catch on.
  • i4ybrid, on 11/09/2007, -0/+0It looks like the left picture is the right picture...just made yellow.
    Does anyone realize the windows are tinted YELLOW on the left one??
  • windyridge, on 11/10/2007, -0/+1Yes yes yes! This is what we need to be doing X 100!!
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    [url=http://www.usfine.com/2Moons-c-110.html]Buy 2Moons Dil[/url]
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