A structure for preventing glass from breaking, having a combination of a surface
glass breaking prevention material, a glass substrate and a metal plate arranged
in the order, wherein an internal glass breaking prevention material made of an
elastomer or viscoelastomer having a dynamic shear modulus of not larger than 1109
Pa is interposed between the glass substrate and the metal plate. Particularly,
in the glass breaking prevention structure configured as described above, destructive
impact energy (B) by which the glass substrate is destroyed when a steel ball 50
mm in diameter and 500 g in weight is dropped on the surface glass breaking prevention
material is not lower than 1.2 times as high as destructive impact energy (A) measured
in the same manner upon a glass breaking prevention structure having the same configuration
as the first-mentioned structure except that the internal glass breaking prevention
material is not interposed.