A light emitting device mount comprising: a pair of positive and negative lead terminals, each of which including a first main surface, a second main surface that is located on the opposite side to said first main surface, and an end surface having first and second recessed surface areas (10ca, 10cb) that extend from said first and second main surfaces (10a, 10b), respectively, as viewed in cross-section; and a resin portion that is integrally formed with said lead terminals, and at least partially covers said end surface so that said first and second main surfaces (10a, 10b) are at least partially exposed, said resin portion forms a recessed part to accommodate a light emitting device, characterized in that: said second recessed surface area is curved and includes a closest point that is positioned closest to said first main surface, and an extension part that extends outward of said closest point and toward said second main surface side, said extension parts are formed at least on opposing end surfaces of said pair of positive and negative lead terminals, respectively and said first recessed surface area is curved and arranged on the exterior side relative to said closest point of said second recessed surface area. a pair of positive and negative lead terminals, each of which including a first main surface, a second main surface that is located on the opposite side to said first main surface, and an end surface having first and second recessed surface areas (10ca, 10cb) that extend from said first and second main surfaces (10a, 10b), respectively, as viewed in cross-section; and a resin portion that is integrally formed with said lead terminals, and at least partially covers said end surface so that said first and second main surfaces (10a, 10b) are at least partially exposed, said resin portion forms a recessed part to accommodate a light emitting device, characterized in that: said second recessed surface area is curved and includes a closest point that is positioned closest to said first main surface, and an extension part that extends outward of said closest point and toward said second main surface side, said extension parts are formed at least on opposing end surfaces of said pair of positive and negative lead terminals, respectively and said first recessed surface area is curved and arranged on the exterior side relative to said closest point of said second recessed surface area. a first main surface, a second main surface that is located on the opposite side to said first main surface, and an end surface having first and second recessed surface areas (10ca, 10cb) that extend from said first and second main surfaces (10a, 10b), respectively, as viewed in cross-section; and a resin portion that is integrally formed with said lead terminals, and at least partially covers said end surface so that said first and second main surfaces (10a, 10b) are at least partially exposed, said resin portion forms a recessed part to accommodate a light emitting device, characterized in that: said second recessed surface area is curved and includes a closest point that is positioned closest to said first main surface, and an extension part that extends outward of said closest point and toward said second main surface side, said extension parts are formed at least on opposing end surfaces of said pair of positive and negative lead terminals, respectively and said first recessed surface area is curved and arranged on the exterior side relative to said closest point of said second recessed surface area. said second recessed surface area is curved and includes a closest point that is positioned closest to said first main surface, and an extension part that extends outward of said closest point and toward said second main surface side, said extension parts are formed at least on opposing end surfaces of said pair of positive and negative lead terminals, respectively and said first recessed surface area is curved and arranged on the exterior side relative to said closest point of said second recessed surface area.