New Cree bulb design. Flow through vents. Cheaper 60w, 40w. Picture heavy.

There are lumens and then there are effective lumens. Yeah, a 60 watt bulb might put out 880 lumens, but you can probably only use 600 of them. I always use the conversion factor of 10 effective lumens per watt of incandescent bulb. Believe me, I’ve done LOTS of measurements and comparisons of bulbs. My house has over 300 LED light bulbs in (and on) it.

Oh, and if your LED bulb puts out more than 60 real lumens per watt in, it is doing good.

As long as its engineered to survive dust and insect issues then i’m glad to get cheaper bulbs, but i do want 2000 lumens or more and hope they get there in the next few years!

Added pictures to OP.
Seems to be XB-E or XB-G High-Voltage, Does not look like a MCPCB.
2000x1122 internal picture

Competes against Philips’ SlimStyle low cost LED bulbs. Certainly looks 100x better. Unlike Philips’ SlimStyle, the Cree 4flow actually fits in lamps, which is slightly important. :wink:



That slimstyle bulb looks modable to lower output and drivable by a single 18650 (for camping and other off grid applications)

The new cree bulb does look a lot cheaper internally then its predecessor, and the warranty went from 10 years to three :frowning:

http://www.geek.com/news/crees-next-generation-led-bulb-drops-the-glass-and-the-price-1607981/

SlimStyle warranty is 3 years also and it cost $1 more. This Cree 4flow is not meant to replace existing 10year Cree bulbs.

Have you read somewhere slimstyle does not use high voltage leds? Most bulbs are moving to high voltage to lower driver costs.

I wonder how that led bulb would act with 8xpls instead of leds of uses.

It would cost 10x as much :smiley:

Finally a LED bulb that looks & shaped like a regular Incandescent bulb and should fit most regular older lamps & fixtures, not like past LED & CFL bulbs with a fat ass that needed a large, wide seat to sit in.

I’ve had no trouble with this bulb, in fact for $1.22 each after $5 coupon i can say its the best LED value i have ever purchased, too bad that was the clearance price at HD and they are all gone now
http://homehardware.ca/en/rec/index.htm/Plumbing-Electrical/Electrical/Light-Bulbs/Led/Miscellaneous/10-5-Watt-A19-Medium-Base-LED-Bright-White-Light-Bulb/\_/N-2pqfZ67l/Ne-67n/Ntk-All_EN/R-I3653206?Ntt=Philips+led

I have to admit I like traditional incandescent appearance. Cree seems to think many others will like it too.
Still I would stick with the normal cree bulbs until this 4flow crees get well tested.

$1.22 bort?! Damn!
Want to sell one to a poor fellow BLFer? I’ll gladly pay a whole $3. :wink:

I have a few of those same Philips bulbs, but paid a lot more than $ 1.22, i must have missed that sale. ( i paid the clearance price of 7 bucks each.)

you should have used the $5 off saveonenergy coupons which would have cut them to $2 each, they are downloadable

I only got 5 and they are all installed (replaced CFLs), if i could have gotten a few dozen more i would have been happy to sell them, in fact i would have taken one apart and replaced its internals to make an 18650 camping lamp.

I don’t like the design of this bulb. I actually bought last week some LED bulbs that use only 1/10th watts. So a 60W would use only 6W. And they look and shine quite like normal bulbs. Cost was about $5.

I think we need to keep in mind some of the power used is to convert the 120V AC to the low voltage DC the LEDs require, and our flashlights have low CRI which would not be acceptable in a consumer grade LED bulb, and higher CRI also reduces output. Also cost of the LED chip is an issue, a single XM-L2 chip costs almost as much as these bulbs (of course we can’t buy at wholesale), and light distribution of the chip usually means more then one chip is required per bulb.

i don’t remember if that coupon offer was available back in August when i bought them.

not in stores but downloaded online its good till dec 31, 2014, not sure if they are being renewed for 2015

What bulb did you get, wattage? Link?
6w for 800 lumens (60w equivalent) would be 133 lm/W, better then any bulb I’ve seen. The L prize bulb was only 93.4 lm/W.

We just aren’t up to that efficiency yet. For a reasonable price at least. In 2011 Cree said they created a bulb with 1,300 lumens at 152 lm/W, CRI 91.2, 2800K. No plans to produce it. I’m sure it would be too expensive and big at this time. http://www.cree.com/news-and-events/cree-news/press-releases/2011/august/110801-21st-century-lamp

My favorite product with flow-through design features:

http://www.claytonbailey.com/celeste.htm :party: