gtrr4--I don't know about the intensity of the sunlight in Ohio, but I can assure you that if I were to leave an observation hive in full sunlight here in Israel, it wouldn't take long before it would turn into bee-hive-soup.
Many years ago, when I was still marketing my honey, I set up an observation hive to attract business. It drew a lot of interest but I made sure to have "cover flaps" to be able to place over the glass walls as the first indications of overheating or distress.