Something that Clive did.
See here.

If you are interested in learning about the history of Iwasaki’s lighting technology developments, here is a video that has a timeline encompassing Iwasaki’s technological advancements in lighting:

https://youtu.be/1K3MYkjvMy8?si=4Eo57494NYwfhhYV

I also find it interesting to learn that Japan was an early adopter of LED light fixtures starting in the late 2000s or so.

If you don’t speak Japanese, I recommend using the google translate app to automatically translate the text into English or any other language that you speak.

Thanks - here is a photo.
I'm in South Hampshire, in the UK.

Photon knows what to do with these..! One time we were there he blew up an EOL 90W lamp where one of the electrodes had detached and was rattling around inside the arc tube. Not only did it go bang and catch fire but the ceramic lampholder was destroyed as well   

@ Rich: Oops... 

Thanks!
It is eating up my F4T5 6500k and BLB tube though, I won't be using it much.

Nice work.! 
Gaffer tape has lots of uses. 

Here they are: base up and base down versions 

And where are the pictures?

@ RRK:
Thanks to Tim, we have two of the DC lamps, one cap up and one cap down.