US Patent 9099850 Electrical junction box

An electrical junction box includes: a frame; and a block having a double wall defined by outer and inner walls. At a position where the double wall and a component receiving section of the block are opposite to each other, a lower end of the inner wall is positioned higher than a component insertion surface at a lower end of the component receiving section, and a waterproof wall is provided on the lower end and an outer edge at the double wall side of the component receiving section. The waterproof wall is defined by a first waterproof portion extended horizontally toward the outer wall from the lower end and the outer edge at the double wall side of the component receiving section, and a second waterproof wall extended downward and parallel to the outer wall from an end at the outer wall side of the first waterproof wall.