Patent ID: 7345887

Claim:
A flexible printed board mounting structure, comprising: a main body having a front side surface, a rear side surface, and an attachment portion that is on the rear side surface, a surface of the attachment portion being substantially perpendicular to the rear side surface; and a flexible printed board attached to at least the rear side surface and the attachment portion of the main body, the flexible printed board having a first area that is at least partially attached to the rear side surface of the main body, an attachment area to which a light-receiving IC is attached, the attachment area being attached to the attachment portion of the main body, and a connecting portion that is unitarily formed with the first area at one side of the connecting portion and the attachment area at the other side of the connecting portion and connects the first area and the attachment area in a deflective manner, a length between the one side and the other side along the connecting portion being longer than a length of a short side of the light-receiving IC.