I have 9W LEDs which are about 80-90W equivalent. They are barely warmer than room temperature after hours of working.
I have a DIY LED light for my herbs running at 45W (400W equivalent?) and it's like 40° after 12 hours. I run it 12 hours 365 days a year with zero issues.
There can only be two reasons for overheating: issues with your power supply or your LED bulbs have electrical issues from the factory.