Patent ID: 8408770

Claim:
A back cover to be attached to a cover mounting portion of a vehicle lamp in which a light source is disposed in a lamp chamber defined by a lamp body on which said cover mounting portion having a mounting opening is provided at a rear end portion of the lamp body and a front cover which covers a front of the lamp body, the back cover comprising: a cover main body formed from a resin material and including a first fitting portion provided on a front end side of the cover main body and adapted to fit in the cover mounting portion and a second fitting portion provided on a rear end side of the cover main body; a connection terminal formed of a metallic material and partially embedded in the cover main body so as to be integrally formed with the cover main body; a metallic case member fitted in the second fitting portion and including a mounting recess portion made to open forwards; a circuit board disposed within the mounting recess portion and connected with the connection terminal; an electronic component disposed within the mounting recess portion and connected with the circuit board; a power supply terminal portion provided on a part of the connection terminal and adopted to be connected with a light source side connector for supplying electric power to the light source; a connector terminal portion provided on another part of the connection terminal and adapted to be connected with a power supply side connector for receiving electric power from a power supply side; a connector frame portion provided on the cover main body and adopted to cover the connector terminal portion from a circumference of the connector terminal portion; a seal groove formed on one of the second fitting portion and the case member to open forwards or rearwards and extending in a circumferential direction; and an elongated seal projection formed on the other of the second fitting portion and the case member to project rearwards or forwards and extending in the circumferential direction, wherein the elongated seal projection is fixed to the seal groove in a condition where the elongated seal projection is fitted in the seal groove and bonded to the seal groove.