Found this one with a quick google search, but I have seen them a lot smaller than this.
http://farm5.static.flickr.com/4019/...abb622c086.jpg
In fact just look at all the pics, they might give you some ideas.
Google Image Result for http://farm5.static.flickr.com/4019/4218295277_abb622c086.jpg
Also, copy and paste this: 屋台ラーメン in google images and you should get some more.