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  #871889 5-Aug-2013 10:32
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Oh, and CFL's radiation patterns are better in some fittings than LED, like outdoor bulkhead lights where the LED shines it all to one end and it looks naff. I did try some side illuminating LEDs off ebay but they were total craptastic stuff. In winter the CFLs really suffer outside with warmup tho, so LED would be ideal if they didnt only light up one end of the glass.




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  #871910 5-Aug-2013 11:09
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Yeah good point although have been fairly impressed with the spread of the Philips units. Still a long way off a incandescent but a lot better then some.







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  #871962 5-Aug-2013 12:11
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richms: LED would be ideal if they didnt only light up one end of the glass.


LED Panel lights solve that problem.
http://www.aliexpress.com/store/group/LED-ceiling-lights-Panel-lights/612156_211692937.html?categoryId=200002295






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  #872002 5-Aug-2013 13:22
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rhysb:
richms: LED would be ideal if they didnt only light up one end of the glass.


LED Panel lights solve that problem.
http://www.aliexpress.com/store/group/LED-ceiling-lights-Panel-lights/612156_211692937.html?categoryId=200002295


The problem is they appear to be cheap chinese ones, so you don't know how safe or reliable they are. Nor how well they work. Often buying cheap is false economy.

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  #872005 5-Aug-2013 13:26
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Nety: There is one from July 2012 but still woefully out of date, cannot see any newer updates, agree cannot see any reason to still recommend CFL other then light outputs that LED is just not producing yet in the form factors used.


Cost is probably the only reason to still go for CFL, as you can sometime get philips U shapped ones for $2 per bulb in a 5 pack, and they don't use much more power than LED. 
I have found that the philips LEDs do get very hot on the white base. There must be a lot of room to make them more efficient, as a lot of energy must still be getting lost in heat.

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  #872014 5-Aug-2013 13:45
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mattwnz:
Cost is probably the only reason to still go for CFL, as you can sometime get philips U shapped ones for $2 per bulb in a 5 pack, and they don't use much more power than LED. 
I have found that the philips LEDs do get very hot on the white base. There must be a lot of room to make them more efficient, as a lot of energy must still be getting lost in heat.


Not really, the ends of the tube have to be heated to get the current to flow thru the gas. That is why the efficiancy on the small CFL's is so lousy - still the same electrodes to heat for a stupid little tube.




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  #872020 5-Aug-2013 13:57
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richms:
mattwnz:
Cost is probably the only reason to still go for CFL, as you can sometime get philips U shapped ones for $2 per bulb in a 5 pack, and they don't use much more power than LED. 
I have found that the philips LEDs do get very hot on the white base. There must be a lot of room to make them more efficient, as a lot of energy must still be getting lost in heat.


Not really, the ends of the tube have to be heated to get the current to flow thru the gas. That is why the efficiancy on the small CFL's is so lousy - still the same electrodes to heat for a stupid little tube.


I was going on the energy ratings on the  box of philips LED vs Philips CFL, and they often use the identical amount of power to create the equivalent light

eg a 40 watt incandescent is 8W for a spiral CFL, and 8 W for an LED. So they use the same amount of power. But the price difference when buying a LED vs a CFL is $20 vs $2-5. Although LED should last longer. Although I noticed that philips LED are only rated to last 25000 hours, while other LEDs are often quoted to last 50000 hours.

The philips LCDs do seem to get hotter than CFLs. I don't think the philips LED ones are as efficient as they will be in the future. 

 
 
 
 


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  #872043 5-Aug-2013 14:49
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The ratings on CFLs are totally bogus in most cases, I have some "23" watt ones that suck down close to 30 on the watt meter. Still dont compete with a 150W incan which they are supposed to equal either.




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  #872053 5-Aug-2013 14:53
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richms: The ratings on CFLs are totally bogus in most cases, I have some "23" watt ones that suck down close to 30 on the watt meter. Still dont compete with a 150W incan which they are supposed to equal either.


Many probably are, although I would have thought that philips ones would be fairly accurate, as their brand depends on it. Both are rated at around 500 lumins, although CFLs lose their strength over time.

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  #874134 8-Aug-2013 19:42
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This just arrived in my email. Wonder if its any good.

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  #874137 8-Aug-2013 19:44
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It would be incredibly harsh light, tiny light sources and no diffusing at all.

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  #874222 8-Aug-2013 21:01
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Multiple light sources makes for horrible 3d looking shadows which are very nausia inducing. Looks like there is room for an actual driver so hopefully they are not a 100Hz flickerfest like some others with a similar design. the flicker is worse on a small light source as you will see it everytime you move your gaze around.




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  #874235 8-Aug-2013 21:16
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MattR: Wonder if its any good.


Philips 8 w ones from bunnings are cheaper, only $19, and they are a top brand and they produce good quality light. Don't know why people would go for a non brand at that price.

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  #874255 8-Aug-2013 21:29
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I would only consider it because they are local with a 5 year warranty, and the range of LED lights from Electrical Direct appears to be half decent quality (or at least the photos look okay).




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  #885464 27-Aug-2013 18:53
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Has anyone tried the LED lights from the Warehouse?




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