Patent ID: 7078620

Claim:
A mounting structure of an on-vehicle electronic circuit unit comprising: a base plate fixed to a glass plate of an automobile; a frame mounted on the base plate and surrounded by four side plates; a circuit board provided in the frame, and having a wiring pattern and electronic components mounted thereon; and a cover for covering an opening region of the frame on an opposite side to the base plate which is a mounting side of the frame; wherein the side plates of the frame include two pairs of first and second side plates facing each other respectively, the pair of the first side plates being formed to be higher than the pair of the second side plates, and the first side plates having protrusions located in a middle of ends thereof, and removed portions formed from the both sides of the protrusions to ends of the second side plates, respectively, wherein the cover has a first covering part for covering between a pair of the protrusions and a second covering part for covering between two pairs of the removed portions respectively, and the first and second covering parts cover an opening region of the frame along a line of the protrusions and the removed portions, and wherein a side of the cover facing the frame is provided with recessed parts formed along the second side plates in the state the protrusions are interposed therebetween.