In documents obtained by TMZ the woman says staff were lowering the heavy bar of stage lights but didn’t give any warning.
She says that the equipment came down on top of her causing serious head injuries.
Sony and lighting company, Goodnight and Co., are named in the suit.
Bergstrom is requesting damages and her medical expenses.
In 2012 Kristin Chenoweth was rushed to hospital after she was injured on the Brooklyn set of The Good Wife.
