In-vehicle electronic device

摘要

An in-vehicle electronic device includes a circuit board in which a preamplifier circuit, and the like are provided, and a holding case, which stores the circuit board. The holding case is configured by combining a lower case which is fixed to a glass surface in which an antenna radiation conductor is arranged, and an upper case which is detachably mounted on the lower case so as to cover the lower case, so that a connection terminal held in the lower case is brought into press-contact with an electrode of the circuit board. When the upper case is removed from the lower case, an elastic piece is bent by pushing a tip of a protruded portion to a base end side, or a snap claw is separated from a locking hole by inserting a tool such as a driver, in between a tongue piece and the elastic piece.

主权项

1. An in-vehicle electronic device in which a substantially rectangular holding case which stores a circuit board is configured by combining a lower case fixed to a glass surface of a window of a vehicle and an upper case detachably mounted on the lower case so as to cover the lower case, and an electronic circuit provided in the circuit board is electrically connected with an antenna radiation conductor arranged on the glass surface, the in-vehicle electronic device, comprising:
an elastic piece configured at one end of the upper case in a longitudinal direction, and pressed and bent to the other end in the longitudinal direction; a snap claw configured such that a part of the elastic piece protrudes to the one end of the upper case in a longitudinal direction; a protruded portion configured to extend from a tip of the elastic piece to the one end of the upper case in the longitudinal direction; a notched portion formed by notching the vicinity of a base end of the protruded portion; and a tongue piece configured at one end of the lower case in a longitudinal direction, and have a locking hole, wherein a position in which the tongue piece and the elastic piece face each other engages the notched portion, so that the upper case is attached to and detached from the lower case by engaging and disengaging the snap claw with and from the locking hole.