After doing a fair bit of research I have found a supplier for the Japanese Spot Lights. Here is a quick copy and paste from the supplier, these are the same as the models that you linked earlier in this thread.
（150ｗ）
SUPAKURU (150w) 
Body: steel painted base finish: 26E Food: heavy aluminum paint finish
Volume: 0.9Kg (including lamp) 100v with electronic ballast
1.0kg 50Hz/60Hz
Electronic ballast dimension: L214 W92 H55 Weight: 1.0kg 50Hz/60Hz Union
Intermediate-code switch with 2m
Clip mouth width: 35mm to
Lamps many colors (Deep Blue Marine Blue AKUABURU
SANHOWAITO neon colors) Please select from. Each color,
type and diffusion type collector.