What is this bulb?

[maximusi]

Evening All,

My partner bought a lovely light fixture that we love and we wanted 4 more slightly smaller but the company stopped selling them so she bought elsewhere however the original one had bulbs that had 6 led's in them but these new ones only have 3 led's in them and as a result are really dim. We are trying to source the replacement bulbs with 6 so we can make them bright but have no idea what the bulbs are and where to find them.

The original light fixture came with 1 spare and I have put this in one of the newer fixtures and confirm it works perfectly. Now I just need to find 47 more of these bulbs!!!!

Pictures of the bulb:
https://i.Upload the image directly to the thread.com/krIXgCk

https://Upload the image directly to the thread.com/a/wj9bmCq

https://Upload the image directly to the thread.com/a/kp61spb

https://Upload the image directly to the thread.com/a/RfAexai


Any help is really really really appreciated!

Thanks,
Max

 

[Soi disant]

Images not working

 

[maximusi]

Images not working

 

[maximusi]

Images not working

Thanks. Not sure why but it wouldn't let me directly upload from the computer but did on my phone.

 

[Dartlec]

That's a bulb/lamp I've not seen before - what sort of holder does it go into? One that has small pointy terminals that the lamp clips into to?

Are there any markings on it at all? Or anything in the instructions that might give you some clue?

Looks almost like a festoon lamp, but with different ends on...

Is there any obvious transformer in the fitting? I'd guess LED lamps that small will run at 12V...

 

[Dustydazzler]

Looks like an led version of the old festoon bulbs you used to get in those thin picture lights

this one looks similar but has pointy ends

LE-0909-14NW | JKL Components LED Car Bulb, White, Festoon shape | RS

uk.rs-online.com

 

[DefyG]

Possibly from a fitting not intended for use in the UK?

 

[snowhead]

Might be a bit bright, these have 12 leds, ? (30 led also available)

These are 42mm looks like they need to be 47mm

Festoon 42mm 12 LED Dimple bulb ideal for Navigation & courtesy lights

This is a Festoon 42mm 12 LED Dimple bulb designed to replace Tungsten bulbs found in many navigation light fittings and courtesy lights.

bedazzledledlighting.co.uk

 

[maximusi]

Don't care about them being to bright current ones are way to dim. Also the ones you posted don't have the screw hole at the end. That's the bit I can't find.. ..

 

[maximusi]

Possibly from a fitting not intended for use in the UK?

Well the first fitting we bought was from a UK company......

 

[MJPD29]

I have never seen one of these before. My only guess is that it is a Chinese import or something like it.

 

[snowhead]

What does the holder that they fit into look like?
Does it use the screw hole in the end of the lamp.

 

[maximusi]

What does the holder that they fit into look like?
Does it use the screw hole in the end of the lamp.

Yes they screw in either end to the bulb.I've attached some further photos.

 

[DPG]

How strange!

I remember some hifi units had similar lamps to illuminate the tuning scale. But they were held in clips, and didn't have the holes in the end.

And as people have mentioned, there are festoon lamps, but these usually have pointed ends which fit into spring clips.

I've never seen these with threaded holes in the end.

 

[snowhead]

It was a lot easier to find the whole light fitting, other sizes available elsewhere.

The site claims the bulbs are G4 base 20w LED, but that doesn't seem to match

30 cm LED Pendant Light Led Fireworks And Spark Ball Ceiling Suspension Fixture Metal Globe Painted Finishes 110-120V 220-240V 2024 - GBP £134

I like this. Do you think I should buy it?

www.lightinthebox.com

 

[maximusi]

It was a lot easier to find the whole light fitting, other sizes available elsewhere.

The site claims the bulbs are G4 base 20w LED, but that doesn't seem to match

30 cm LED Pendant Light Led Fireworks And Spark Ball Ceiling Suspension Fixture Metal Globe Painted Finishes 110-120V 220-240V 2024 - GBP £134

I like this. Do you think I should buy it?

www.lightinthebox.com

I've seen that site and many others and I've contacted them as it's definitely not G4

 

[DefyG]

from a UK company......

Manufacturing or just a UK distributor?

 

[Julie.]

Manufacturing or just a UK distributor?

I assume illegal import as there is no UKCA or CE marking.

 

[Dartlec]

They look like some sort of custom version of festoon lamps but with screw holes added at the ends - that may make it very difficult to find them outside of the original manufacturer - who I will assume are Chinese.

It may be worth contacting companies like The Lamp Company | Light Bulbs & Control Gear | Light Bulbs Suppliers - https://www.lampco.co.uk who specialise in lamps. They at least may have seen it before and give you some guidance...

The lamps may only be available on something like Alibaba, which may be pot luck.

I have found what is called a 'barrel end festoon' lamp and seems to be used in marine lighting..

2.6W Festoon Led Bulb 44mm, Dimple Barrel Aqua Signal Navigation 10~40V Warm White - https://boulters-chandlery.co.uk/epages/c027c503-b020-45e2-bbb6-36bcebf3b8a0.sf/en_GB/?ObjectPath=/Shops/c027c503-b020-45e2-bbb6-36bcebf3b8a0/Products/4012

But that is only 44mm and probably far too bright for the number of lamps the light can support - it looks the closest to what you have I've seen though so may be worth further investigating marine lighting specialists?

 

[Soi disant]

Well the first fitting we bought was from a UK company......

Who no doubt bought it from a Chinese source and, as with so many retailers these days (sadly), without a care in the world for ongoing maintainability.

 

[Soi disant]

The problem with marine lamps is that anything to do with boats is stupidly priced.

Some thoughts:

A closeup of the end of a dimpled lamp someone was selling showed a small unthreaded hole. It is possible that the screws in the light would cut a thread into it, in which case some slightly longer screws and some washers to pack the length out might be an answer.

The lamp shown by snowhead is described as having a diameter of 12.6mm. If they mean this


rather than the cap, then that would make maximusi's caps larger, and it is possible that they would slide over the ends of the one in the photo.

In a world where the full panoply of gods smiled on him, and all the planets were in alignment, the caps from his old lamps would be a tight fit (so no soldering needed) and would bring the length up to 47mm.

In his shoes I'd be tempted to get one and try....

 

[Lucien Nunes]

The driver is a constant-current driver but the lamps are in parallel and have ballast resistors inside, a configuration that would normally be used with a constant-voltage driver. What this means in practice is that you are going to have to change the driver if you change the lamps, as they will have been specifically matched together. I.e. they have cheated things so that when the current of the driver is divided by that number of lamps, the voltage developed across the ballast resistors makes the lamp voltage right. The driver is only a very low output unit (3w) anyway.

I suspect the lamps have been made up specially for this range of fittings. What you might have to do is dismantle them and attach the endcaps to normal festoon lamps of suitable length and power. Then, substitute a constant-voltage driver of the same voltage as the festoon lamps, and equal or greater wattage rating to the sum of the lamp wattages.