Enclosure - vertical door design

Hi,

I am working on a wooden enclosure for some electronics. The enclosure is almost finished, but I need some advice about the front door design - its a vertical door that opens downwards. The box is meant to be a UV exposure unit for photo-etching PCB's, so I need a door to access the internal space. I've already attached the door, which is basically an aluminum plate attached at the bottom of the box by two hinges (the black things on the image).

The thing is that with the current setup the door is able to open down up to more than 180 degrees from its originally closed position. I wish to limit this in some way so that the door can open up to maximum of 90 degrees from its closed position (see images).

It would seem I need some sort of mechanism. I've already done some searching online, but I can't quite come up with a decent solution. So I'd like to ask members of this forum for ideas, suggestions.

Thanks in advance.
Best regards!

 

This should work:

Basic Economy Drop Front Support - Rockler Woodworking Tools

 

Or just some chain on the sides......

 

So *THAT*'s what they're called. Drop front support or support lid were the keywords I was looking for. I was googling for "window scissors", no wonder I didn't find any results. I see even ebay has lots of stuff listed under these keywords.

Thanks, I'll see, if I can find anything that matches the dimensions of my enclosure.

EDIT: Lid stay