Be open with your ideas.

Sharing your ideas will automatically attract good meaningful (and usually free) help by those who have similar passion to see that idea become reality, and furthermore brought to market.

My past personal experiences have taught me that one must be very carefull and secretive(generate trade secrets) once your product begins to flourish, since that is when the bad-guys come lookin' to steal, cheat, and clobber you.

Maybe you should start an 'Idea Farm' or an 'Incubator' in this forum or at your own website. Many collaborative projects exist out there; actually this forum is one of sorts in itself. Once you have working prototypes, there are many large co's, small companies, investment firms, professors, military brass, and the like that welcome presentations. Many will pay for your trip to visit them or webinar to demonstrate. Plenty have hit it big (relatively speaking).
You should always 'push', don't expect to be 'pulled'.