Looking for a replacement for a Phillips HPR-59 Bulb

[Vinniec5]

I would appreciate any ideas anyone has. I came across a Northern Mining cap light, only the lamp assy no battery. i'm making a rechargable battery pack and mount for the light to use as a carry lantern with detachable light.
I wanted to find a replacement bulb for it and can't locate any and wanted to see if anyone has any ideas for a replacement bulb hopefully with more output if possible. The HPR59 thats in it is good but not super bright with a good spot. I'd estimate about 50-65 lumens. Its a 6 volt lamp

 

[Vinniec5]

:wave: Anyone know where I can find that bulb or have a replacement idea, I'd like to stay incan but have a more flood than spot bulb