Patent ID: 8284556

Claim:
An electronic substrate device, comprising: a heat conductive base member, which is fixed to an installation portion through an intermediation of attachment parts; a cover member which is fixed to an outline peripheral portion formed so as to surround an outer peripheral edge portion of the base member; an electronic substrate, which is placed in an interior space between the base member and the cover member, and comprises a first planar pattern provided to a part of a rear surface portion facing with the base member; and a heat generating component, which comprises a plurality of connecting terminals which are electrically connected, by soldering, to the electronic substrate, and a die pad which is a heat transfer member bonded to the first planar pattern by soldering, a heat generating element attached to the die pad, and the rear surface portion of the electronic substrate, wherein the base member comprises an accommodation recess, which accommodates the heat generating component through an intermediation of a first gap, and a first separated protruding portion, which is provided around the accommodation recess, and has a top surface which abuts the rear surface portion of the electronic substrate to form a second gap, and wherein a first heat transfer bond, which is a heat conductive adhesive, is applied to the first gap and the second gap communicating with the first gap.