Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
2032 posts

Uber Geek
+1 received by user: 504


  Reply # 1047660 18-May-2014 22:47
Send private message

Niel:
steve98: They box said equivalent to 40W but I would say they look more like a 60W.

That's because it is compared to total light output.  Incandescent radiates in all directions, so when used in a down light or reflector fitting a large percentage is wasted into the ceiling/back while an LED bulb is directional so all the light is radiated forward.  In the right fitting, an LED bulb is even more efficient than just the power saving.


so the fittings need to be changed also?

13099 posts

Uber Geek
+1 received by user: 1533


  Reply # 1047669 18-May-2014 23:52
Send private message

FineWine: Consumer NZ has just tested LED's this month - they recommend Panasonic LDAHV8L27H2 though they are not cheap at $24 but you can buy them from Countdown

You can read all about their tests here http://www.consumer.org.nz/reports/led-bulbs

Cheers


You can get them cheaper at Briscoes when they have a sale. I got 30 % off. I have tested the panasonic ones, and the philips 8W and 13 W ones. The panasonic has a very good colour of  light to it, where as the philips 8W one has a green tinge to it. The 13 W philips is possibily the best coloured light, but it is also the most powerful, and more expensive.

 
 
 
 


4753 posts

Uber Geek
+1 received by user: 2155


  Reply # 1047845 19-May-2014 09:53
Send private message

mattwnz: The 13 W philips is possibily the best coloured light, but it is also the most powerful, and more expensive.


These were on sale at New World supermarkets last week, about $22 each I think


. Not sure if they're still available at that price.  I bought a couple of them, they seem okay.  They are a larger physical size than the 8-10w LEDs - about the size of a typical 100W incandescent.

The Consumer article on LEDs was a bit scathing on spot/downlight performance.
"The spotlights were different – only two of the 12-volt LED bulbs had a higher light output than their equivalent halogen spots. The rest of the LED bulbs, both 230 and 12 volt, were disappointing. The lighting industry has more work to do to make these LEDs a true drop-in replacement for halogen spots."


20177 posts

Uber Geek
+1 received by user: 3782

Trusted
Subscriber

  Reply # 1047850 19-May-2014 09:59
Send private message

I've found almost every 5w one to light the room better than what it replaced. Most halogen and gu10 downlights come with a very directional lamp which is hopeless for lighting a room.




Richard rich.ms

135 posts

Master Geek
+1 received by user: 30

Subscriber

  Reply # 1047944 19-May-2014 12:22
Send private message

I've replace all my R80 downlights with the Phillips 10W Led bulbs from Bunnings.  Look a little bulbish in the light fitting, but you get over that.  I replaced all other bulbs throughout the home with the same. 
Used the 13W for bedrooms that had a single outlet.  5W x 3 for the hall way.  Also used Verbatim (from Dove) for the Dim-able outlets.  
Use to purchase a couple of bulbs a week so it wasn't too much of a direct hit in the pocket.
Found the Philips to put out good consistent light.  So much so, that my wife never noticed the change.

3267 posts

Uber Geek
+1 received by user: 77

Trusted

  Reply # 1048271 19-May-2014 17:53
Send private message

PhantomNVD:
Niel:
steve98: They box said equivalent to 40W but I would say they look more like a 60W.

That's because it is compared to total light output.  Incandescent radiates in all directions, so when used in a down light or reflector fitting a large percentage is wasted into the ceiling/back while an LED bulb is directional so all the light is radiated forward.  In the right fitting, an LED bulb is even more efficient than just the power saving.


so the fittings need to be changed also?


No, what I mean is LED bulbs are ideal for down light fittings as you do not have to rely on the (remarkably inefficient) reflector getting the light out.  In a batten fitting (or pendant, or "wall washer") however they are not good, because no light spills onto the ceiling to scatter through the room.




You can never have enough Volvos!


3267 posts

Uber Geek
+1 received by user: 77

Trusted

  Reply # 1048278 19-May-2014 17:56
Send private message

richrdh18: Found the Philips to put out good consistent light.  So much so, that my wife never noticed the change.

I like them too, but they are just too fat for the fittings I had so used Viribright until I've found dedicated LED fittings that look good and work well, and fit the 35 holes in my house without having to cut it larger.
http://www.qualityledlighting.co.nz/




You can never have enough Volvos!


2953 posts

Uber Geek
+1 received by user: 1063


  Reply # 1054275 27-May-2014 12:49
Send private message

andrewNZ: FWIW some old downlights do have a thread there. You install the frame, then screw in the reflector/trim.

If I was boss of the world, downlights would be banned (with the exception of a handful of cases).


And if you were boss of the world I would stage a coup smile.

I'm with you on the old inefficient chimney style down lights, modern downlights are effective and efficient.  We installed some 'dimmable' LED down lights in our kitchen.  They are fully enclosed, can be insulated over top of, use very little electricity (the sparky measured it out of curiosity) and will last for tens of thousands of hours of use time.  They provide fantastic illumination.  We went for a colder colour in the kitchen but you could get warm white as well.





Mike

1 | 2 
Filter this topic showing only the reply marked as answer View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

FUJIFILM introduces X-E3 mirrorless camera with wireless connectivity
Posted 18-Sep-2017 13:53


Vodafone announces new plans with bigger data bundles
Posted 15-Sep-2017 10:51


Skinny launches phone with support for te reo Maori
Posted 14-Sep-2017 08:39


If Vodafone dropping mail worries you, you’re doing online wrong
Posted 11-Sep-2017 13:54


Vodafone New Zealand deploy live 400 gigabit system
Posted 11-Sep-2017 11:07


OPPO camera phones now available at PB Tech
Posted 11-Sep-2017 09:56


Norton Wi-Fi Privacy — Easy, flawed VPN
Posted 11-Sep-2017 09:48


Lenovo reveals new ThinkPad A Series
Posted 8-Sep-2017 14:37


Huawei passes Apple for the first time to capture the second spot globally
Posted 8-Sep-2017 10:45


Vodafone initiative enhances te reo Maori pronunciation on Google Maps
Posted 8-Sep-2017 10:40


Voyager Internet expand local internet phone services company with Conversant acquisition
Posted 6-Sep-2017 18:27


NOW Expands in to Tauranga
Posted 5-Sep-2017 18:16


Windows 10 Fall Creators Update coming Oct. 17
Posted 4-Sep-2017 14:10


Garmin introduce Garmin vivoactive 3
Posted 1-Sep-2017 18:38


Kiwibank wastes $90 million on software – Reseller News
Posted 1-Sep-2017 13:45



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.