Many times we have used outdoor lights that are completely enclosed. I don't know if you want something that is contemporary or traditional, but you can look at the various lighting manufacturers websites for outdoor lighting.

If this doesn't help, you may want to take a trip to your local lighting showroom. They will probably have more catalogs that you can look through or may even have them on display.

A lighting line that I used to carry by the name of Besa Lighting, does wonderfully different types of lighting for bathrooms and outdoors that are fully enclosed. some of their sconces are also made for indoor/outdoor use and are totally enclosed. I have posted their URL for easy reference. I would suggest that you take a look at what they have because they are different than the normal light you will find. They are also reasonably priced for the items they manufacture.

Here is a link that might be useful: Besa Lighting