I either had that or something similar. I never had the inflatable one. I got mine at a toy store that used to exist called Toy Chest. It was the white tube with a matching cap on the end. The main part of the hilt was silver metal and the emitter was black cone shaped plastic. I had a red lens and then later I somehow got a green lens. I used to slide the tube out and drilled holes at the bottom and added a wire ring so I could clip it to a utility belt.
Later when ESB came out,
Kenner had one similar but it did not use batteries, the blade tube and hilt was hollow and when you moved it, the air would travel through and make a whirring sound. I got yellow because for some reason Kenner represented Luke's saber in almost all the toys as a
yellow blade... go figure. Once again, the hilts looked nothing like any movie seen lightsaber prop.
I still have both these at my parents house.