Help - Replacement Lightbulbs

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richms

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#1714080 1-Feb-2017 17:06

mattwnz:

Also they may burn out quicker, as LEDS like a lot of air around them as the base/heat sink gets hot. They shouldn't be enclosed, and there is usually a warning on the bulb. The other option is using some some form of extension or a E27 to B22 convertor (if it exists) to push the bulb out of the fitting a bit more, although probably easier just to replace teh fittings. I personally find 3000k to the the perfect colour temp. 2700k is too yellow, and I find anything higher with LEDs is a very cold colour and changes the colour of things. eg Reds can appear dark/black etc.

The colour changing is a crap CRI, not the temperature. I find 4000k is the best, bloody hard to get compared to that ugly daylight. I have replaced all my photography softboxes lights over my bench with 4000k leds because it matches the fluro replacements and is nicer.

For the OP, if you are up for swapping the fitting out, there are some reasonable long fittings at bunnings that mimmic the size of a fluro now. Probably better than trying to wrangle something into a downlight and hoping to get decent spread.

Otherwise. see if the neck on one of these is long enough - non compliant lamp holders tho so don't finger the lamps as you put them in or take them out if it is on.

Richard rich.ms

Dulouz

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#1714089 1-Feb-2017 17:24

djtOtago:

Dulouz:

I'm not fussy about the w more about the light output. Ideally 6000k+ which throws out as much light as possible from a fairly deep recessed socket. The great thing about the CFL above is that they are relatively long so they hung out of the socket and distributed their light into the room.

6400k = The colour of the light not how bright it is. ~6400k colour is often called Cool daylight.

Lumens is the measure of how much light (brightness) it gives off. It should be written on the box somewhere. If the bulb is quite old its lumen rating may not be shown.

A 45W CFL is typically about 2500+ Lumens

So you just need to find a bulb that is approximately 6400k in colour output , 2500 Lumens in light output, has an Edison screw base and is the right shape to fit your recessed fitting.

In old school technology (Incandescent bulb) you would be looking for something around the 150W. I doubt you will find an affordable LED bulb with 2500 Lumen output that will fit a deep recess fitting.

Thank's - that is useful to know. I assumed the 6400k was it's output. The only thing it says on the box is that it is similar to a 225w incandescent blub. I'm not keen to change the fittings but might need to for adequate lighting.

Amanon

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#1714100 1-Feb-2017 18:20

I've had success with "batten" lights from lighting plus in the past (http://www.lightingplus.co.nz/lighting/led-lighting/surface-and-strip-lighting/halo-115cm-19w-led-striplight4000k.html) - they are only 4000K, and that particular one is only 1000 or so lumens. I used it in the kitchen above the work surfaces and found the 4000K was comfortable to work under, and the strip light meant a lot of light.

From memory it had a figure 8 input (and also a figure 8 output as well so you could chain them together)

It could be an option if you do consider changing your fitting. (Unless you find a E27 -> figure 8 cable ... But ...)

Dulouz

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#1714949 3-Feb-2017 13:34

This is the solution I went with. They're like mini-suns (minus the heat) and reasonable price.

Amanon

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#1714950 3-Feb-2017 13:38

Dang, I have not seen the 23w models around. We have some 10.5W here and they are fairly bright already! Where did you find it?

Dulouz

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#1714952 3-Feb-2017 13:45

ubergeeknz:

Dang, I have not seen the 23w models around. We have some 10.5W here and they are fairly bright already! Where did you find it?

They are from http://lampspecialists.co.nz/ in Lower Hutt. Their website is down at the moment but they're still in business. Cost $29 each.

Amanon

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mattwnz

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#1714954 3-Feb-2017 13:55

Wow, 3000 lumin LEDs. They seem to be bringing out more powerful ones all the time. I have found philips to be good with no failures so far. I have however had other brands die prematurely. I think the heavier the bulbs are, the better, and the philips ones seem to have big heavy heat sinks in them. Some of the other brands that have failed on me are really light weight,.

ubergeeknz

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#1714955 3-Feb-2017 14:00

mattwnz:

Wow, 3000 lumin LEDs. They seem to be bringing out more powerful ones all the time. I have found philips to be good with no failures so far. I have however had other brands die prematurely. I think the heavier the bulbs are, the better, and the philips ones seem to have big heavy heat sinks in them. Some of the other brands that have failed on me are really light weight,.

Yes, have also had very good experience with the Philips lights. Excellent light and very reliable so far.

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