Vibration proofing heat shield plate

A vibration proofing heat shield plate (10) fixed such as to cover at least a part of a heat source (20) while forming a gap with respect to a surface of the heat source is provided with a vibration proofing heat shield plate main body portion (14), a collar member (11) positioned at an open hole (141) of the vibration proofing heat shield plate main body portion and provided with a pair of locking pieces (12, 13) fastened by bolt (17) to the heat source (20), a washer member (15) in which a portion interposed between a pair of locking pieces (12, 13) of the collar member (11) is formed in an approximately C-shaped cross section, and a joint member (16) joining the washer member (15) and the vibration proofing heat shield plate main body (14).