From Newsgroup: uk.d-i-y

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13
years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps? They're round and fairly shallow,
maybe 10cm diameter and 3cm deep. Obviously the light from the LED
needs to shine mostly one way as these are mounted on ceilings and
wooden panels.
--
Chris Green
-+
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From Newsgroup: uk.d-i-y

On 13/10/2025 08:00, Chris Green wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13
years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps? They're round and fairly shallow,
maybe 10cm diameter and 3cm deep. Obviously the light from the LED
needs to shine mostly one way as these are mounted on ceilings and
wooden panels.

Are you sure they have replaceable bulbs? To save money many devices
have integrated leds.
--
Jeff
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From Newsgroup: uk.d-i-y

On 13/10/2025 08:52, Jeff Layman wrote:

On 13/10/2025 08:00, Chris Green wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13
years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps?-a They're round and fairly shallow,
maybe 10cm diameter and 3cm deep. Obviously the light from the LED
needs to shine mostly one way as these are mounted on ceilings and
wooden panels.

Are you sure they have replaceable bulbs? To save money many devices
have integrated leds.

It's not necessarily to save money. Often the problem with LED bulbs in certain fittings is heat which kills the LEDs or associated electronics.
Many of the fitting with non-replaceable LEDS have the LEDS attached to relatively large heat-sinks which extends the life of the LED.
--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk
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From Newsgroup: uk.d-i-y

Chris Green <cl@isbd.net> wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13
years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps?

Lamps glowrCabulbs growrCa;-)
--
Spike
Sign the rCYNo to IDrCY petition here:
<https://petition.parliament.uk/petitions/730194?v=2>
BlackbeltBarrister opinion here:
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From Newsgroup: uk.d-i-y

On 13/10/2025 10:24, Spike wrote:

Chris Green <cl@isbd.net> wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13
years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps?

Lamps glowrCabulbs growrCa;-)

without pics its hard to tell. As others have said can you change the
"bulbs"? Do you want to keep the fittings?

My experience with LEDS is that light output per watt hasn't changed so
for more light you need more watts. If these are these mains, probably
ok, 12v or 24v might need a new driver/transformer.

However, I have found that, for me, colour temp makes a big difference.
I now go for the highest I can find. Swapping a "Warm white" for a "cool white" seems to make a big difference, appears much brighter. Has
transformed both my loo and bathroom. It doesn't look like incandescent,
but if I really want that I get multi-colour...

Dave
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From Newsgroup: uk.d-i-y

On 13/10/2025 08:57, alan_m wrote:

On 13/10/2025 08:52, Jeff Layman wrote:

On 13/10/2025 08:00, Chris Green wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13
years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps?-a They're round and fairly shallow,
maybe 10cm diameter and 3cm deep. Obviously the light from the LED
needs to shine mostly one way as these are mounted on ceilings and
wooden panels.

Are you sure they have replaceable bulbs? To save money many devices
have integrated leds.

It's not necessarily to save money. Often the problem with LED bulbs in certain fittings is heat which kills the LEDs or associated electronics.
Many of the fitting with non-replaceable LEDS have the LEDS attached to relatively large heat-sinks which extends the life of the LED.

One problem, of course, is using led bulbs in old fittings made for incandescent bulbs. The driver generally goes as even with low-powered
leds they eventually get heat stress, but that's not what's at issue here.

Those fittings designed with large heat sinks are for lighting in very inaccessible places, and would cost accordingly for their long life.
Domestic lighting is made to a certain (usually low) price. You've also
go the issue of the leds very slowly getting dimmer as they age. Perhaps
not so much as incandescent and even fluorescent lamps, but it does
occur, and they eventually require replacement.

Integrated led lighting is ideal for today's "throwaway society". I
would never install one as, other than mentioned above, the whole
premise is a con. Why replace just a cheap bulb when you can replace a
much more expensive unit? If the manufacturers had to pay for the labour
of replacement and the recycling/landfill cost, as well as the fitting
itself, perhaps they wouldn't be so keen on selling them.
--
Jeff
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From Newsgroup: uk.d-i-y

Jeff Layman <Jeff@invalid.invalid> wrote:

On 13/10/2025 08:00, Chris Green wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13 years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps? They're round and fairly shallow,
maybe 10cm diameter and 3cm deep. Obviously the light from the LED
needs to shine mostly one way as these are mounted on ceilings and
wooden panels.

Are you sure they have replaceable bulbs? To save money many devices
have integrated leds.

I crimped the connections to the SMD LEDs myself so they're definitely replaceable! :-)
--
Chris Green
-+
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From Newsgroup: uk.d-i-y

Jeff Layman <Jeff@invalid.invalid> wrote:

On 13/10/2025 08:57, alan_m wrote:

On 13/10/2025 08:52, Jeff Layman wrote:

On 13/10/2025 08:00, Chris Green wrote:

I'm thinking it might be a good idea to replace the existing little
square SMD LEDs in the brass dome lamps on our boat. I'm sure there
must be brighter/more efficient LEDs now than when I installed them 13 >>> years ago.

What sort of LED 'bulbs' (don't quite know what to call them really)
would work well in these lamps?-a They're round and fairly shallow,
maybe 10cm diameter and 3cm deep. Obviously the light from the LED
needs to shine mostly one way as these are mounted on ceilings and
wooden panels.

Are you sure they have replaceable bulbs? To save money many devices
have integrated leds.

It's not necessarily to save money. Often the problem with LED bulbs in certain fittings is heat which kills the LEDs or associated electronics. Many of the fitting with non-replaceable LEDS have the LEDS attached to relatively large heat-sinks which extends the life of the LED.

One problem, of course, is using led bulbs in old fittings made for incandescent bulbs. The driver generally goes as even with low-powered
leds they eventually get heat stress, but that's not what's at issue here.

Those fittings designed with large heat sinks are for lighting in very inaccessible places, and would cost accordingly for their long life. Domestic lighting is made to a certain (usually low) price. You've also
go the issue of the leds very slowly getting dimmer as they age. Perhaps
not so much as incandescent and even fluorescent lamps, but it does
occur, and they eventually require replacement.

Integrated led lighting is ideal for today's "throwaway society". I
would never install one as, other than mentioned above, the whole
premise is a con. Why replace just a cheap bulb when you can replace a
much more expensive unit? If the manufacturers had to pay for the labour
of replacement and the recycling/landfill cost, as well as the fitting itself, perhaps they wouldn't be so keen on selling them.

You've all got the wrong end of the stick, well fairly the wrong end.

These are LED ceiling lights on a boat, supplied with 12 volts. I
bought the 'traditional' brass 'dome' fittings many years ago and
stuck the square SMD LED 'bulbs' in them myself. They just hang loose
on the wires inside the fittings and mostly point in the right
direction. :-)

I was just thinking that there might be more efficient LED 'bulbs'
around nowadays that I could install.
--
Chris Green
-+
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