Solar Barricade Lights – Why the Hoods?

I have had a lot of people ask me why there are hoods on some solar barricade lights and not on others.  Well, it has to do with the type of solar barricade light.  The type b barricade lights have hoods while the regular lights do not.

Why is this?  This is because it allows a bigger solar panel to be mounted on top.  It also does a better job of directing the light so that it is as bright as possible.