We will not be able to help you if you cannot provide us with any useful information.
Can you show us a closeup of the light's "frame" - the place where light is nested inside the case object, the glass, etc. I mean the very close view - so that you can see how it's made. For example: if there is glass in front of the light. You should also select the light object and show the modify panel with the light's properties visible.