US 7,405,706 B2 · In-vehicle antenna apparatus

Abstract

Rear glass is provided with a radiation conductor and a ground conductor. An electronic circuit unit includes a base plate fixed on the rear glass; a frame body which houses a circuit substrate and is screwed on the base plate; and a cover for covering the frame body. The frame body and the cover are provided with drainage holes. These drainage holes are provided at the bottommost portion of the electronic circuit unit in a state where the electronic circuit unit is mounted on the rear glass. Furthermore, the frame body is provided with a plurality of tongue pieces that are bent in order to support the circuit substrate, and clearance holes provided for forming the tongue pieces. The clearance holes that are disposed in one of side walls of the frame body are used as drainage holes.

Claims7

Dependent claims

An in-vehicle antenna apparatus comprising a sheet of glass serving as a windowpane and installed in a vehicle at an angle with respect to the ground;

a radiation conductor disposed on an inner surface of the sheet of glass facing an inside of the vehicle;
a circuit substrate electrically connected with the radiation conductor;
and a housing which houses the circuit substrate,
wherein a lower region of the housing disposed closer to the ground is provided with at least one through-hole which allows an internal space of the housing to communicate with an external space,
wherein the through-holes are embodied as a drain, and
wherein the at least one through-hole is provided in at least two sections of the housing.

3 more elements

Dependencies are inferred from the claim text.

In-vehicle antenna apparatus

Life of this patent

In-vehicle antenna apparatus

Life of this patent

Abstract

Claims7