The present invention has an object to provide a glass funnel, which is safe,
highly reliable and lightweight. The object is solved by a glass funnel wherein
an outwardly projecting bent portion is provided along at least a part of an outer
peripheral area, where the body portion intersects with a plane perpendicular to
a bulb axis, and which includes intersecting points between the outer peripheral
area and a plane containing a diagonal axis and the bulb axis, and the bent portion
is provided at a specific position.
