poster child

For the 2004 film, please see Poster Boy The phrase poster child (sometimes poster boy) originally referred to a child afflicted by some disease or deformity whose picture is used on posters to raise money for charitable purposes; "he was the poster child for muscular dystrophy". However, the term is usually used metaphorically, meaning a shining example or model of its type; in this context, it is generally a term of .
See more at Wikipedia.org...

person who is considered a perfect representative of a cause or movement

主義や運動の完全な代表者と考えられる人

Person die als perfekt für die Repräsentation eines Anlasses oder einer Bewegung betrachtet wird

"ילד כרזה", ילד הנחשב לנציג מושלם של תנועה או מטרה כלשהי