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  Reply # 665515 1-Aug-2012 15:38 Send private message

I've now got 20x 8W and will be adding another 6 soon. The house is significantly warmer as a result of the fat LED housing filling up what was an opening to the ceiling (recessed fitting). The house is starting to get stuffy due to no ventilation ;-).

Of the 20 lamps I've had 3 fail. One was intermittently flickering due to a bad contact inside one of the 6 LEDs (not solder joint, this was inside an LED array). The other would not switch on about once in 10-20 times. The 3rd popped with a brief crackle after 4 days, I was sitting under it at the time. All replacements went smooth, no issues.

Consider that about 1/3 of our Philips Softone incandescent lamps failed within 2 months, one made a lot of smoke, I'm sticking with Viribright (but also keeping the receipts in case I need it).

The 11W has a lot less light output than the 8W, as stated here from the start. You have to look at the Lumen rating, not the Watt rating.

Bunnings Pakuranga now has a lot more Viribright stock and also added bayonet style.




You can never have enough Volvos!


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  Reply # 665540 1-Aug-2012 16:12

Hi Switchlighting.
Did you ever have a look at the failed viribright bulb I couriered to you a month ago?

Was wondering if you had a chance to have a look and work out why they seem to fail so readily.





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  Reply # 665555 1-Aug-2012 16:46 Send private message

Niel:
The 11W has a lot less light output than the 8W, as stated here from the start. You have to look at the Lumen rating, not the Watt rating.


Not only that, it was a very spotty output with hotspots and darker spots, whereas the 8 is a nicer uniform half sphere of light from it.

I returned it without any problems and got the cheaper brighter nicer 8 at the time. Not really sure why they even bother stocking the 11's to be honest.

all 3 of mine have died with a pop. I do have a couple where one segment comes on really bright and then fades after turnoff, and one or 2 will put out a flicker or 2 a couple of seconds after turnoff. Somewhat annoying, but not as much as the retardedly long afterglow that the lights all have (except the hopeless flickery 5 watt ones which turn off straight away)





Richard rich.ms

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  Reply # 674693 20-Aug-2012 18:01 Send private message

Well our LED lights are on their way from Aus and should arrive this week. :D
These are full LED light fittings, not just bulbs, for a new build.

The specs says they are 12.4W plus driver loss brings the total to 16W.
CRI-90 & 1400 lumens!
They use the Edison Edi Power HR Series LEDs.
They have a 3 year warranty as standard and 5 years if you use their drivers, which we will be.

They have 3 colour variations so we went for the Natural White of 3000k-5000k, the warm white (2600k - 3800k) was just too yellow for our liking.
There is also cool white (5000-8000k) which looked too blue.

I'll post back once they are installed.






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  Reply # 674699 20-Aug-2012 18:21 Send private message

Cyabro: How much ?

Which areas of the house are you installing them?

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  Reply # 674716 20-Aug-2012 18:53 Send private message

networkn: Cyabro: How much ?

Which areas of the house are you installing them?


We are using them in most areas like kitchen, bathrooms, toilet, and a few in the lounge/family/dining but wife wanted some fancy pendant lights in those ares as the main lights. Also got some for an undercover patio area.
Also a couple in the kids bedrooms but using a pedant light as the main light here too.

They cost about NZ$67 each (light fitting and driver) including freight.







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  Reply # 674721 20-Aug-2012 18:58 Send private message

CYaBro:
networkn: Cyabro: How much ?

Which areas of the house are you installing them?


We are using them in most areas like kitchen, bathrooms, toilet, and a few in the lounge/family/dining but wife wanted some fancy pendant lights in those ares as the main lights. Also got some for an undercover patio area.
Also a couple in the kids bedrooms but using a pedant light as the main light here too.

They cost about NZ$67 each (light fitting and driver) including freight.

]


I take it they fit into a standard screw household light fitting? Would you be able to provide a link to them, I might buy a couple to try out. 

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  Reply # 674726 20-Aug-2012 19:06 Send private message

networkn:
CYaBro:
networkn: Cyabro: How much ?

Which areas of the house are you installing them?


We are using them in most areas like kitchen, bathrooms, toilet, and a few in the lounge/family/dining but wife wanted some fancy pendant lights in those ares as the main lights. Also got some for an undercover patio area.
Also a couple in the kids bedrooms but using a pedant light as the main light here too.

They cost about NZ$67 each (light fitting and driver) including freight.

]


I take it they fit into a standard screw household light fitting? Would you be able to provide a link to them, I might buy a couple to try out. 


No they don't.
As I said these are a full LED downlight fitting, not just an LED bulb.
This is the one:
http://www.wattsaver.com.au/DL7-1400.html





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  Reply # 674786 20-Aug-2012 20:36 Send private message

I got 12W LED IP44 (bathroom) rated downlights that have an "insulation covered" rating from Lighting Direct for $80 each for my new bathroom. Much easier than ordering from overseas.




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  Reply # 674816 20-Aug-2012 21:37 Send private message

timmmay: I got 12W LED IP44 (bathroom) rated downlights that have an "insulation covered" rating from Lighting Direct for $80 each for my new bathroom. Much easier than ordering from overseas.


What's the light from them like? Do you have any photos you can post?
Do you have a link to the light so I can see the specs?

I looked pretty much everywhere I could think of in NZ for an LED light fitting that even came close to the specs of what I bought in the end.




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  Reply # 674822 20-Aug-2012 21:39 Send private message

timmmay: I got 12W LED IP44 (bathroom) rated downlights that have an "insulation covered" rating from Lighting Direct for $80 each for my new bathroom. Much easier than ordering from overseas.


Can you please provide the make and model?

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  Reply # 674825 20-Aug-2012 21:42 Send private message

CYaBro:
The specs says they are 12.4W plus driver loss brings the total to 16W.
CRI-90 & 1400 lumens!


87.5 lumen/Watt - awesome!

Only rated CA-80 (abutted) but would make a great halogen replacement.

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  Reply # 674850 20-Aug-2012 22:37 Send private message

Niel: I've now got 20x 8W and will be adding another 6 soon. The house is significantly warmer as a result of the fat LED housIng filling up what was an opening to the ceiling (recessed fitting). The house is starting to get stuffy due to no ventilation ;-). .

I suspect the benefit has less to do with bulb / opening than with the heat generated by whatever bulb is in the fitting. The more heat generated by the bulb the greater the convected airflow past it up into the roof space, resulting in greater heat loss thru the fitting (This explains to me the high loss figures Consumer claim )

An LED bulb generates little heat ( I can remove mine immediately after turning them off ), so there would be a lot less convected airflow and consequently the room will stay warmer.

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  Reply # 674921 21-Aug-2012 07:54 Send private message

I think it's these ones, but the Lighting Direct website seems to be down. It's these ones, in white. 11W, 600 lumen, 54 lumen per watt. I wasn't that bothered about absolute efficiency, they're nice looking lights that are bright enough and use less power than most others. If I was putting them through my entire house I may have paid more attention to efficiency, but in the bathroom that's only used an hour a day it doesn't matter.




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  Reply # 674946 21-Aug-2012 09:06 Send private message

Hi robjg63

Yes I have dismantled the driver and it appears to be the driver IC that has failed. I cannot prove this as I do not know which model of driver IC it is.

LED output rating / efficiency.

There are many ways of rating the efficiency and output of an LED light. Most are not an honest representation. Anyway, here are the various ways:

Example light:
- 3000K colour temp LED output at 25 deg C = 850 lumen
- 3000K colour temp LED output at 80 deg C = 750 lumen
- 5000K colour temp LED output at 25 deg C = 1000 lumen
- 5000K colour temp LED output at 80 deg C = 880 lumen
- LED power input = 10 watts
- Reflector loss = 10%
- Glass loss = 9%
- Driver power input 13 watts


see next post




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