Blown Light BIlbs

[jlcalbre]

I recently installed several recessed lights in my living room. However, I keep blowing light bulbs in certain lights. It started with 2 particular lights. I replaced the fixtures but that didn't help. Then I redid the connections in a junction box that feeds the lights making sure all the connections were tight. That seemed to help for a little while and the 2 lights that were blowing bulbs aren't, anymore, but now a different one is. At $3 per bulb, I would like to fix this quickly! Anyone have any ideas?

 

[Paul_C]

Could it be that these lights are located where they're experiencing a lot of vibration when on, such as from a floor above?