Beginner Gardening: Outdoor lighting quandry, 2 by foxrox

foxrox wrote:
Hi,
About 6 months ago I had a landscaper install low voltage lighting in my front yard. All was fine until a couple days ago when my wife noticed that the lamps were too hot to touch. I inspected and found that the fixtures seem to be getting burned and/or melting. We have 6 and they're all doing the same thing. It seems that the bulbs create too much heat for the fixtures. It doesn't make sense - why would they use plastic around such a hot bulb? I believe that the lamps are made by Kichler, this looks like the same lamps:
http://www.kichler.com/products/product/landscape-retrofit-(...
Here are two pics, one of the fixture with the top of the lamp removed and one of the bulb inside. I hope someone can offer advice! At this rate they're all going to melt!