Patent ID: 8537565

Claim:
An electronic control unit-mounting electric junction box comprising: an electric junction box main body including: a casing including a lower case and an upper case having an outer surface, the casing formed by the lower case and the upper case, and a conducting path formed in the casing; and an electronic control unit attached to the electric junction box main body, the electronic control unit being connected to the conducting path in the electric junction box main body, wherein the upper case is either an external upper case or a built-in upper case, and the electronic control unit is either an external control unit or a built-in control unit, and is structured to be attachable to either the external upper case or the built-in upper case, respectively, the external upper case is provided with an attachment space configured to accept the external electronic control unit in a first recessed containing section formed in the outer surface of the external upper case, the first recessed containing section having a first bottom wall and a first depth, the built-in upper case includes an internal attachment space configured to accept the built-in electronic control unit and defined by a second recessed containing section, the second recessed containing section being defined by a second bottom wall and having a depth smaller than the depth of the first recessed containing section, the external electronic control unit in the external upper case is contained in a housing and the lower case and the conducting path are configured to be combined with the external upper case, and the built-in electronic control unit in the built-in upper case does not include the housing and the lower case and the conducting path are configured to be combined with the built-in upper case.