Antenna device for movable body

An antenna device for a movable body comprising:

• an aerodynamic spoiler to be attached substantially horizontally at a rear portion of the movable body, said aerodynamic spoiler being formed from a non-conductive material and being provided with a groove means in an upper surface thereof;
• a vertical antenna element for receiving electric waves, attached to the aerodynamic spoiler and accommodated in said groove means when unused;
• and
• an electric terminal means attached to said aerodynamic spoiler and electrically connected to said vertical antenna element.

An antenna device for an automobile provided with a trunk lid, comprising:

• a spoiler of non-conductive property attached horizontally to the trunk lid of the automobile, said spoiler being provided with a pair of grooves formed to an upper surface thereof, each of said groove having both longitudinal end portions in a level lower than that of a central portion thereof so as to provide a curved shape;
• a pair of horizontal antenna elements for receiving electric wave embedded in said spoiler so as to extend longitudinally horizontally with respect to said spoiler:
• a pair of vertical antenna elements for receiving an electric wave attached upright to said spoiler at portions near outer ends of said embedded horizontal antenna elements, said vertical antenna elements being accommodated in said grooves formed to said spoiler when unused, each of said vertical antenna elements having a flexible property so as to provide a linearly straight shape at a time of receiving no external force;
• a pair of engaging mechanisms each being disposed in each of said grooves for engaging said vertical antenna element in a flexed manner in a disengageable manner, each of said engaging mechanisms comprising a U-shaped outer portion constituting a portion of said groove and secured to a rear side of an upper surface of said spoiler, an engaging member disposed in said spoiler for engaging a front end portion of said vertical element fallen down in said U-shaped portion in a disengageable manner, means for limiting a vertical movement of said engaging member and allowing the engaging member to move in a direction substantially normal to the vertical antenna element by inserting a pushing means into a key hole provided for the spoiler, and means for urging said engaging member in a direction to close the portion of said groove;
• a terminal means secured to said spoiler and electrically connected to said horizontal and vertical antenna elements;
• an antenna element for a global positioning system for receiving electric wave embedded in substantially a central portion of said spoiler so as to extend horizontally with respect to a ground of the earth;
• a terminal means secured to said spoiler and electrically connected to said antenna element for the global positioning system;
• and
• a switching cicuit means electrically connected to said terminal means for selectively switching ones of said horizontal and vertical antenna elements in response to wave receiving condition.