Get on Dragons Den quick

There is a device which could be described as a portable sprinkler system. However, I can't think of the tradename It consists of a stored pressure water extinguisher with a sprinkler bulb assembly fitted to the body of the extinguisher casing. My local shopping centre has them fitted at high level to the underside of the roof portable stalls/market barrows (with mock material roofs) which trade from within the circulation spaces of a covered mall. So if a display of celebrity calenders or mixed nuts catch fire, the sprinkler above will eventually operate, and hopefully damp down the blazing nuts below with it's 9 litres of wet stuff. I am not sure whether they are covered by any recognised standard and will post the name of the supplier or system when/if I can remember it!!

I have noted such systems being used in quality type fish and chip shops where they are positioned over fryers