JPH10324196A - Antenna device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent an appearance in a vehicle from spoiling without lowering antenna performance by extending an antenna body receiving an antenna element on the front part of the box main body of an overhead console. SOLUTION: The box main body 12 of an overhead console 11 is formed with a small articles receiving chamber on the rear side part, and a back mirror (room mirror) 18 is provided integratedly with the box main body on the rear side part. A hollow thin-box-like antenna body 20 is extended in a space (a dead space left as it is not effectively utilized) between the back of the back mirror 18 and a front glass, on the front part of the box main body 12. This antenna body 20 is formed out of electric wave transmitting material such as synthetic resin, and receives a plane-like antenna element made of an electric conductor in the interior, and hence an antenna device 10 for vehicle is constituted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a vehicle antenna device.

[0002]

2. Description of the Related Art In a vehicle antenna device, in addition to a GPS antenna device corresponding to a car navigation system and a BS antenna device corresponding to a satellite broadcast, an automatic toll system such as a toll road (a non-ETC system such as a toll road) has been proposed. An antenna device corresponding to a stop automatic toll collection system) is known. This type of vehicle antenna device 11
Reference numeral 0 denotes a flat antenna element made of a conductor housed inside an antenna body 120 made of a thin box having a length, width, and height of about 70 mm, 70 mm, and 15 mm as shown in FIGS. It is configured. The vehicle antenna device 110 is generally mounted on the upper surface of the roof panel 104 of the vehicle or the upper surface of the trunk lid by the mounting means 105 such as a permanent magnet or a screw.

[0003]

When the vehicle antenna device 110 is mounted on the upper surface of the roof panel 104 of the vehicle or the upper surface of the trunk lid, the appearance of the vehicle is impaired by the vehicle antenna device 110. Failure occurs. Further, in order to hold the vehicle antenna device 110 so as not to be accidentally detached by wind pressure or the like during traveling of the vehicle, the mounting means 105 having a large mounting strength is required.
Accordingly, the vehicle antenna device 110 must be mounted, and the mounting cost is increased.

[0004] In view of such circumstances, it has been proposed to mount the vehicle antenna device 110 in a vehicle compartment, for example, on an instrument panel. The instrument panel includes an air-conditioning controller, various instruments, audio equipment,
Various devices and articles such as a speaker, a grab box, an ashtray, and an accessory case are mounted. Therefore, when the vehicle antenna device 110 is to be mounted on the instrument panel, the arrangement of the various devices and articles is adversely affected, or the external design of the instrument panel is deteriorated, or It is difficult to mount the vehicle antenna device 110 on the instrument panel because of a problem that the antenna performance is deteriorated.

An object of the present invention is to provide an antenna device for a vehicle in a vehicle compartment without deteriorating the appearance of the vehicle compartment and without deteriorating the antenna performance in view of the above problems.

[0006]

According to a first aspect of the present invention, there is provided an antenna apparatus for a vehicle, comprising: a front windshield provided at a front portion of a box body of an overhead console mounted on a ceiling of a passenger compartment; And an antenna element is housed inside the antenna body. Therefore, there is no problem that the antenna performance is reduced by extending the antenna body including the antenna element toward the windshield. Furthermore, troubles when the vehicle antenna device is mounted on the in-vehicle instrument panel, such as adversely affecting the arrangement of various devices and articles, or deteriorating the external design of the instrument panel, Alternatively, it is possible to solve the problem that the antenna performance is deteriorated.

According to a second aspect of the present invention, there is provided an antenna device for a vehicle, wherein a rearview mirror is provided at a front portion of a box body of an overhead console mounted on a ceiling surface of a vehicle compartment, and a rearview mirror is provided at a front portion of the box body. Is characterized in that an antenna body extends in a space between the rear surface of the rearview mirror and the windshield, and an antenna element is housed inside the antenna body.

[0008] Therefore, the vehicle antenna device is installed in the space between the rear surface of the rearview mirror and the windshield, that is, in a dead space that has been conventionally left unused without being effectively used. By installing the vehicle antenna device in the dead space, it is possible to prevent the front view of the vehicle from being narrowed by the vehicle antenna device. Further, since the dead space has no obstacle to the reception of the radio wave and is located at the optimal position for the reception of the radio wave in the vehicle cabin, there is no problem that the antenna function of the vehicle antenna device is deteriorated.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 3, the passenger compartment ceiling surface 1
An overhead console 11 is mounted at a central portion from the front side. In FIGS. 1 and 2, the box body 12 of the overhead console 11 has a small storage chamber 16 formed at the rear side thereof, and an opening / closing lid 17 can be opened and closed by a hinge mechanism at an opening of the small storage chamber 16. It is assembled. In this embodiment, as shown in FIG. 2, a pocket portion 17a for storing and holding glasses is formed inside the opening / closing lid 17, and the pocket portion 17a is provided.
In a, card holders 17b for holding cards such as tickets and cards are formed. Further, a lamp storage chamber in which an illumination lamp is provided is formed at the center of the box body 12, and an illumination lens 15 is attached to an opening of the lamp storage chamber.

At the front of the box body 12, a rearview mirror (room mirror) 18 is provided integrally with the box body 12. At the front of the box body 12,
In a space between the rear surface of the rear-view mirror 18 and the windshield 2 (conventionally, the space is a dead space left without being effectively used), an antenna body 20 having a hollow thin box shape extends. Have been. The antenna body 20 is formed of a radio wave transmitting material such as a synthetic resin. As shown in FIG.
A planar antenna element 22 made of a conductor is accommodated in the inside of 0, thereby constituting the vehicle antenna device 10.

When the box body 12 is formed of a synthetic resin such as polypropylene, the antenna body 20 is integrally formed simultaneously with the formation of the box body 12, thereby reducing the number of parts and the number of assembling steps. However, after the box body 12 and the antenna body 20 are separately formed, the antenna body 20 can be assembled to the front part of the box body 12.

The vehicle antenna device 10 includes a GPS antenna device corresponding to a car navigation system, a BS antenna device corresponding to satellite broadcasting, and an automatic toll system such as a toll road (non-ETC). Among the antenna devices and the like corresponding to the stop automatic toll collection system), the size, shape, antenna performance, and the like are appropriately set so as to sufficiently function as the desired vehicle antenna device 10.

A vehicle antenna device 10 according to this embodiment
Is configured as described above. Therefore, in the front portion of the box body 12 of the overhead console 11, the antenna element is provided in the space between the rear surface of the rear-view mirror 18 and the windshield 2, that is, in the dead space which has been conventionally left without being effectively used. The antenna body 20 in which the antenna 22 is accommodated extends, whereby the vehicle antenna device 10 is installed in the vehicle interior. By installing the vehicle antenna device 10 in the dead space between the rear surface of the rearview mirror 18 and the windshield 2, it is possible to prevent the front view of the vehicle from being narrowed by the vehicle antenna device 10.

The dead space between the rear surface of the rear-view mirror 18 and the windshield 2 has no obstacle to radio wave reception. For this reason, since the dead space is an optimal position for receiving radio waves in the vehicle interior, there is no problem that the antenna performance of the vehicle antenna device 10 is reduced. Furthermore, troubles when the vehicle antenna device is mounted on the in-vehicle instrument panel, such as adversely affecting the arrangement of various devices and articles, or deteriorating the external design of the instrument panel, Alternatively, it is possible to solve the problem that the antenna performance is deteriorated.

In the above-described embodiment, the case where the rearview mirror 18 is provided integrally with the box body 12 of the overhead console 11 has been exemplified, but the present invention is not limited to this. For example, as shown in FIG. 4, a stay 19 may be provided on the rearview mirror 18, and the rearview mirror 18 may be attached by the stay 19 near the front side of the passenger compartment ceiling surface 1. Further, an insertion hole 30 for the stay 19 of the rear-view mirror 18 is formed in the box body 12 of the overhead console 11 and the stay 19 is covered and concealed so that the box body 12 and the rear-view mirror 18 have an integrated appearance. . For this reason, the box body 1
This is substantially the same as that of the above-described embodiment in which the rearview mirror 18 is provided integrally with the lens 2 and is excellent in design.

[0016]

As described above, according to the present invention,
The vehicle antenna device can be provided in the vehicle interior without deteriorating the appearance of the vehicle interior and without deteriorating the antenna performance.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a vehicle antenna device according to an embodiment of the present invention is provided on an overhead console.

FIG. 2 is a perspective view showing a state where an opening / closing lid of an accessory storage chamber of the overhead console is opened.

FIG. 3 is a side sectional view showing the relationship between the overhead console and the vehicle antenna device.

FIG. 4 is a side sectional view showing another embodiment of the present invention.

FIG. 5 is an explanatory view showing a state in which a conventional vehicle antenna device is mounted on an upper surface of a roof panel of a vehicle.

FIG. 6 is an enlarged side view showing a conventional vehicle antenna device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabin ceiling surface 2 Windshield 10 Vehicle antenna device 11 Overhead console 12 Box body 18 Rearview mirror 20 Antenna body 22 Antenna element

Claims (2)

[Claims] An antenna body extends toward a windshield at a front portion of a box body of an overhead console mounted on a ceiling of a vehicle compartment, and an antenna element is housed inside the antenna body. An antenna device for a vehicle, comprising: 2. A rearview mirror is provided at a front portion of a box body of an overhead console mounted on a ceiling surface of a passenger compartment, and a front portion of the box body is provided between a rear surface of the rearview mirror and a windshield. An antenna device for a vehicle, characterized in that an antenna body extends in a space defined by (1) and an antenna element is housed inside the antenna body.