Patent ID: 8144476

Claim:
A box-shaped housing of an in-vehicle electronic control unit including a planar control circuit board that controls an occupant crash protection system, which protects an occupant of a vehicle in a case of collision of the vehicle, the box-shaped housing being installed to the vehicle and comprising: an opening end that defines an opening and is placed adjacent to the vehicle; a ceiling wall that is opposed to the opening end; and a peripheral wall that extends from the opening end to the ceiling wall, wherein: the box-shaped housing receives the planar control circuit board through the opening end toward the ceiling wall and securely holds the planar control circuit board at the peripheral wall such that a plane of the planar control circuit board is generally parallel to the opening; the peripheral wall includes: an opening side wall section that is located adjacent to the opening end; and a ceiling side wall section that has a wall thickness larger than a wall thickness of the opening side wall section and is located on a ceiling wall side of the opening side wall section; the peripheral wall further includes an attachment portion to which the control circuit board is attached; and the attachment portion projects toward the opening end from the ceiling side wall section by a predetermined length with the attachment portion being spaced from the opening side wall section of the peripheral wall and being substantially parallel to the opening side wall section.