What light for Lounge?

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richms

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#2646887 4-Feb-2021 10:53

nitro:

SirHumphreyAppleby:

You could probably get away with slightly lower lumens as the LED button lights tend to put out a more even light. Colour temperature also makes a difference. If you go for a cool white (~4000K), it will seem brighter.

4000K to 5000K is in the Neutral White range (my preference, especially for torches). CW is above that, usually 5600K and up. What sucks about those high temperature LEDs is that the cheap ones have terrible CRI (colour rendition index). This makes them seem bright, but not very useful bright - I find it hard to even read with those.

Cool white is 4000k, always has been here, back to the dark ages of T12 fluro tubes with blackened ends that mysteriously still work after 50 years of use... Neutral white is an asian term for it, which wont be used locally.

Richard rich.ms

networkn

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#2646888 4-Feb-2021 10:54

richms:

networkn:

Ok I had a dig around in the cupboard and found a spare bulb. They are R7s 200W Halogens rated for 3000 Lumens. Much more achieveable than the 5600 previously indicated by me.

Does that change if I can just swap the bulbs?

No, heat from an LED of that size would have it cook up instantly to get anywhere near that light output. I got some stupidly large LEDs for the shed since they were on clearance. Theyre 3600 lumens and look at the heat sinking they need to dissipate that. https://www.bunnings.co.nz/osram-36w-3600lm-daylight-high-watt-led-es-globe_p0014392

I'm a bit confused. How is Halogen able to produce so many lumens and still operate. LED is lower Wattage and should be producing less heat surely?

I suspect I'm missing something, but I am unsure what.

Is there something that measures Lumens or something, that will give me an idea on how much light I need. It's not like I can easily compare what I have to what I want to by side by side.

timmmay

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#2646954 4-Feb-2021 11:20

networkn:

I'm a bit confused. How is Halogen able to produce so many lumens and still operate. LED is lower Wattage and should be producing less heat surely?

I suspect I'm missing something, but I am unsure what.

Is there something that measures Lumens or something, that will give me an idea on how much light I need. It's not like I can easily compare what I have to what I want to by side by side.

Halogen uses heaps more power, puts out more light, and gets hotter. Super simple, put power through a piece of metal and it gives off light. LED produces less heat but it just can't go as bright in that form factor due to the LED technology.

Fred99

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#2647028 4-Feb-2021 13:05

Those halogen tubes also radiate light 360 degrees, so the lumen output of the tube and actual output from the lampholder where half the light is reflected with significant losses may not be a reasonable way to compare, a similar style LED "oyster light" with lower lumen output may be better than expected as the LEDs inside will be directional - thus not needing a reflector.

If you like the style, something like this may be worth a look:

https://www.voltexelectrical.co.nz/p-11056-voltex-oyster-ceiling-light-led-25w-ip40-tricolour-dimmable-400mm.aspx

Gives the option to add a compatible dimmer, the "tricolour" is something set when installed, switch on the back of the unit between warm white, daylight, cool white. You'd have to take it off the ceiling to change the setting later.

This company sent free samples of some downlights to my (sparky) son, they were also dimmable and tricolour, plugged them in to take a look and they seem pretty good, IIRC they offer 5 year warranty, and $80/hour payment to sparkies for time if replacement under warranty is needed. They seem confident about durability/quality, the stuff I've seen seems good, but I'm no expert.

From a quick look, the "CRI" is 80, which is about average for an LED, probably doesn't matter unless you're displaying fine art works. They're IP rated, so hopefully more bug-proof than an average interior fitting. They don't state lumen output, 25w "should be" 3500+ lumens.

There's no limit to what you could spend at some fancy lighting stores. My SO and I found some really nice pendant lights in an upmarket store, thought three of them could be perfect above our kitchen servery/bar. Looked at the price tag, they were $1800 each. I made for the exit door of that store hastily.

openmedia

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#2647035 4-Feb-2021 13:14

I've recently fitted two of this into the garage as despite the size it had just two small recessed downlights

https://www.bunnings.co.nz/lutec-16w-white-finish-tri-colour-remi-led-downlight_p0139547

It can fit a wide range of hole sizes but the LED provides terrific coverage. Dimmable and very easy to retrofit.

Generally known online as OpenMedia, now working for Red Hat APAC as a Technology Evangelist and Portfolio Architect. Still playing with MythTV and digital media on the side.

networkn

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#2647103 4-Feb-2021 13:45

Fred99:

Those halogen tubes also radiate light 360 degrees, so the lumen output of the tube and actual output from the lampholder where half the light is reflected with significant losses may not be a reasonable way to compare, a similar style LED "oyster light" with lower lumen output may be better than expected as the LEDs inside will be directional - thus not needing a reflector.

If you like the style, something like this may be worth a look:

https://www.voltexelectrical.co.nz/p-11056-voltex-oyster-ceiling-light-led-25w-ip40-tricolour-dimmable-400mm.aspx

Gives the option to add a compatible dimmer, the "tricolour" is something set when installed, switch on the back of the unit between warm white, daylight, cool white. You'd have to take it off the ceiling to change the setting later.

This company sent free samples of some downlights to my (sparky) son, they were also dimmable and tricolour, plugged them in to take a look and they seem pretty good, IIRC they offer 5 year warranty, and $80/hour payment to sparkies for time if replacement under warranty is needed. They seem confident about durability/quality, the stuff I've seen seems good, but I'm no expert.

From a quick look, the "CRI" is 80, which is about average for an LED, probably doesn't matter unless you're displaying fine art works. They're IP rated, so hopefully more bug-proof than an average interior fitting. They don't state lumen output, 25w "should be" 3500+ lumens.

There's no limit to what you could spend at some fancy lighting stores. My SO and I found some really nice pendant lights in an upmarket store, thought three of them could be perfect above our kitchen servery/bar. Looked at the price tag, they were $1800 each. I made for the exit door of that store hastily.

Yeah, lighting can be entirely stupid. I have a client who's lighting bill for their home was about half what we paid for our entire home.

They were ugly lights too.

Thanks for the recommendation, those LED's look pretty good.

Kookoo

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#2647107 4-Feb-2021 13:53

Sorry, not trying to hijack, but are there any lighting fixtures that I can buy that use halogen R7? https://www.bunnings.co.nz/philips-halogen-300w-r7-linear_p0243344

Cause as a lounge bulb it looks like a pretty good option still, but I couldn't find anything at lightingdirect or bunnings website to actually plug them into.

@networkn - nope, not offering to buy your current fixture 🤣

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richms

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#2647994 4-Feb-2021 23:20

Kookoo:

Sorry, not trying to hijack, but are there any lighting fixtures that I can buy that use halogen R7? https://www.bunnings.co.nz/philips-halogen-300w-r7-linear_p0243344

Cause as a lounge bulb it looks like a pretty good option still, but I couldn't find anything at lightingdirect or bunnings website to actually plug them into.

@networkn - nope, not offering to buy your current fixture 🤣

No because the world has moved on from those inefficient fire hazards. Perhaps used on trademe might find someone offloading some. I'm not rich enough to use lighting like that.

Richard rich.ms

Handle9

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#2648000 5-Feb-2021 00:26

Fred99:

Those halogen tubes also radiate light 360 degrees, so the lumen output of the tube and actual output from the lampholder where half the light is reflected with significant losses may not be a reasonable way to compare, a similar style LED "oyster light" with lower lumen output may be better than expected as the LEDs inside will be directional - thus not needing a reflector.

If you like the style, something like this may be worth a look:

https://www.voltexelectrical.co.nz/p-11056-voltex-oyster-ceiling-light-led-25w-ip40-tricolour-dimmable-400mm.aspx

Gives the option to add a compatible dimmer, the "tricolour" is something set when installed, switch on the back of the unit between warm white, daylight, cool white. You'd have to take it off the ceiling to change the setting later.

This company sent free samples of some downlights to my (sparky) son, they were also dimmable and tricolour, plugged them in to take a look and they seem pretty good, IIRC they offer 5 year warranty, and $80/hour payment to sparkies for time if replacement under warranty is needed. They seem confident about durability/quality, the stuff I've seen seems good, but I'm no expert.

From a quick look, the "CRI" is 80, which is about average for an LED, probably doesn't matter unless you're displaying fine art works. They're IP rated, so hopefully more bug-proof than an average interior fitting. They don't state lumen output, 25w "should be" 3500+ lumens.

There's no limit to what you could spend at some fancy lighting stores. My SO and I found some really nice pendant lights in an upmarket store, thought three of them could be perfect above our kitchen servery/bar. Looked at the price tag, they were $1800 each. I made for the exit door of that store hastily.

It says 2355-2400 lumens in the specs.

Handle9

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#2648001 5-Feb-2021 00:32

networkn:

I'm a bit confused. How is Halogen able to produce so many lumens and still operate. LED is lower Wattage and should be producing less heat surely?

I suspect I'm missing something, but I am unsure what.

Is there something that measures Lumens or something, that will give me an idea on how much light I need. It's not like I can easily compare what I have to what I want to by side by side.

I wouldn't stress about it too much. It's punching those lumens through a diffused light shade so in the room it will be significantly below the bulb lumens. To put some context 50W MR16 Halogens are rated to 800 lumens. Replacing them with 800 lumen LEDs is literally like night and day. The LEDs give much more light, partially because they don't have the horrible reflectors and can sit basically on the roof surface.

Fred99

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#2648039 5-Feb-2021 09:54

Handle9:

It says 2355-2400 lumens in the specs.

It does too. WRT specs - I must need a new pair of reading specs.

neb

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#2648114 5-Feb-2021 12:47

networkn:
Hi.

What light would be suitable to replace this with, in an LED.

Ah yes, the ceiling-mounted fly/moth catcher that doubles as a light. We had one or two of those too in the Casa de Cowboy, long since gone. The R7 ones aren't lights, they're incendiary devices, those things are completely wrong for that kind of heat load. If you unscrew it from the ceiling, look for scorch marks on the gib and charring of the power cord. If you want to replace it with a similar fly-catcher, look for "oyster ceiling light" and put any E27 bulb you like in it, or just get one that's LED from the get-go.

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