JPH07154118A - Antenna system for navigation equipment - Google Patents

Abstract

PURPOSE:To prevent theft and to omit a means containing a removed antenna in the case of car washing or the like by mounting a GPS antenna of the navigation equipment in a cabin at a required interval from a window glass while its direction is able to be converted. CONSTITUTION:A GPS antenna main body 11 mounted to a back mirror shaft 14a by a mount bracket 15 is placed between a back mirror 14 and a front glass 13b and an antenna mount base 16 is adjusted so as to be directed nearly upward. A backward support screw 21 is loosened to slide and move vertically a variable support stay 19 to a lower side mount plate 18 to allow the antenna main body 11 fixed to a base plate 16 to be hidden to the rear side of the mirror 14 when viewing from the driver and the screw 21 is tightened at a position as near as possible to the glass 13b to fix the stay 19 to the plate 18. A front support screw 20 is loosened to rock the base plate 16 to the stay 19, the antenna main body 11 is located upward through the glass 13b while observing a reception state, and the screw 20 is tightened again to fix the base plate 16 to the stay 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna device suitable for application to a car navigation system.

[0002]

2. Description of the Related Art Conventionally, various types of navigation devices have been developed to be mounted on automobiles. For example G
PS (Global Positioning Sys)
Various navigation devices that use a positioning device at the current position by a positioning system using an artificial satellite called tem) have been put into practical use. In such a navigation device, the current position detected by the positioning device is displayed on the map displayed on the monitor receiver so that the current position and the like can be determined.

A navigation device mounted on such an automobile is constructed as shown in FIG. This Figure 6
In FIG. 1, reference numeral 1 denotes a positioning unit, and the positioning unit 1 measures the current position. This positioning unit 1 is a GPS receiver
Positioning is performed by using a positioning system using an artificial satellite called as, and an antenna 2 for receiving a signal from the artificial satellite is attached.

Then, the current position data measured by the positioning unit 1 is sequentially supplied to the system controller 3.
The system controller 3 is composed of a microcomputer and controls the operation of each part of the navigation device.

Further, in FIG. 6, reference numeral 4 denotes a disk drive, and a CD-ROM on which map data is recorded is previously mounted on the disk drive 4. Then, when the data of the current position is supplied from the positioning unit 1 to the system controller 3, the map data around the position indicated by this data is transferred to the C mounted on the disk drive 4.
It is read from the D-ROM and supplied to the image processing section 5.

The image processing section 5 carries out a process of creating a video signal for displaying a map from the map data supplied under the control of the system controller 3. At this time, a process of displaying various characters and figures on the map is performed based on the data supplied from the system controller 3. Characters and figures displayed on this map include a mark indicating the current position and traveling direction of the automobile, a mark indicating a point which has already passed.

The video signal created by the image processing unit 5 is
Supply to the display device 6. The display device 6 is installed, for example, in the vicinity of a driver's seat of an automobile, and displays a road map or the like as shown in FIG. 7 by a video signal supplied from the image processing unit 5, which is displayed as a color image. It is like this.

Further, operation information from the operation keys 7 is supplied to the system controller 3, and various operation modes such as switching of display modes are set based on the operation of the operation keys 7.

The antenna of the navigation device thus constructed, that is, the GPS antenna 2 is formed in a flat plate shape, and the GPS antenna 2 is magnetized to the roof of the vehicle body or the outer surface of the trunk lid. It is installed to receive signals from satellites.

[0010]

As described above, the navigation device mounted on the automobile is designed to receive a signal from an artificial satellite, and the GPS antenna for receiving this signal is attached to the outer surface of the vehicle body, so that it is stolen. In addition, there is a risk of damage to the antenna itself when washing the car, and the antenna itself may be damaged.Therefore, you must remove the antenna and store it in the passenger compartment when you wash the car. ,
Since the GPS antenna is used by attaching it to the outer surface side of the vehicle body, it is necessary to have a waterproof structure, resulting in high cost.

The present invention has been made in view of the above points, and an object of the present invention is to make it possible to install an antenna device in a vehicle cabin in a navigation device mounted on a vehicle.

[0012]

To achieve the above object, the present invention provides a vehicle position detecting means, a map data storing means, and a detecting means based on the map data stored in the map data storing means. In a navigation device having a display means for displaying a map in the vicinity of the detected position and displaying the vehicle position detected by the detection means on the map displayed by the display means, the navigation device is connected to the detection means, An antenna for receiving a signal is mounted in a passenger compartment of an automobile at a required interval with respect to a window glass so as to be capable of changing direction by a mounting means.

Further, in this structure, it is preferable that the antenna be installed between the rearview mirror and the windshield in the vehicle compartment.

[0014]

According to the present invention, by mounting the antenna in the vehicle compartment so that the direction of the antenna can be changed, it is possible to prevent theft, damage during washing, etc., and to change the direction of the antenna according to the reception condition, which is always good. Can be received in the state.

[0015]

Embodiments of the present invention will be described below with reference to FIGS. In the description of this example, the navigation device body can be configured in the same manner as the navigation device of the example described in the section of the prior art, so only the antenna device will be described.

1 to 3 show an embodiment, in which 11 is an antenna connected to a GPS receiver of a navigation device body, that is, a GPS antenna body, and navigation is performed from one side of the GPS antenna body 11. A connection cord 12 for connecting to the main body side is derived. The GPS antenna main body 11 is installed in the vehicle interior 13a of the vehicle body 13, and in this example, the windshield 13
It is arranged to be attached to the rear-view mirror 14 side installed inside b.

Reference numeral 15 is a mounting bracket for an example of the GPS antenna body 11, which is composed of an antenna installation base plate 16, an upper mounting plate 17 for the rearview mirror shaft 14a, a lower mounting plate 18, and a variable support stay 19.

The antenna installation base plate 16 is formed in a flat quadrilateral shape having substantially the same size as the lower surface side of the GPS antenna main body 11, and a shaft support piece 16a is formed upright in a central portion of one side edge thereof. The shaft support piece 16a is provided with a shaft support screw hole 16b.

The upper mounting plate 17 is formed with a concave curved portion 17a corresponding to the peripheral surface of the rearview mirror shaft 14a at the central portion, and is positioned on both sides of the concave curved portion 17a and has a screw hole 17a.
b and 17c are drilled, and the lower mounting plate 18
Is a flat shape having a longer dimension than the upper mounting plate 17, one end of which is bent and raised to form a shaft support piece 18a.
A shaft support screw hole 18b is bored in 8a, and through holes 18c, 18d corresponding to the screw holes 17b, 17c of the upper mounting plate 17 are bored in the flat surface portion.

The variable support stay 19 has a flat rectangular plate shape and is formed with a guide hole 19a which is long in the longitudinal direction.

Mounting bracket 1 formed in this way
Each component of 5 is connected by a screw shaft and a screw.
That is, one end side of the variable support stay 19 is brought into contact with the outer surface side of the shaft support piece 16a of the antenna installation base plate 16 to guide the guide hole 1
One end of 9a is made to correspond to the screw hole 16a for shaft support, the screw 20 for shaft support is inserted from the guide hole 19a side, screwed into the screw hole 16b for shaft support and tightened, and in this state, the variable support stay 1
The shaft support piece 18a of the lower mounting plate 18 is brought into contact with the other end side of 9 to make the shaft support screw hole 18b correspond to the other end portion of the guide hole 19a. Screw 2
1 is inserted and screwed into the shaft support screw hole 18b and tightened, whereby the antenna installation base plate 16 and the lower mounting plate 1
8 are connected via a variable support stay 19.

Then, in order to mount the antenna installation base plate 16 on the rear-view mirror shaft 14a, the upper mounting plate 17 is mounted on the rear-view mirror shaft 14a, and the concave curved portion 17 thereof is formed.
a is abutted in a crossed shape corresponding to approximately the half circumference side, and the lower mounting plate 18 is brought into contact with the rearview mirror shaft 14a so as to face the upper mounting plate 17, and in this state, the through hole of the lower mounting plate 18 Fixing screw 2 on 18c and 18d
2a, 22b are inserted and screwed into the screw holes 17b, 17c of the upper mounting plate 17 and tightened, so that the antenna installation base plate 16 mounts the upper and lower mounting plates 17, 18 and the variable support stay 19 on the rearview mirror shaft 14a. Mounted through.

The GPS antenna main body 11 is fixed on the antenna installation base plate 16 by adhesion with the double-sided adhesive sheet 23, and the connection cord 12 derived from the GPS antenna main body 11 is connected to the navigation device main body.

In this way, the GPS antenna body 11 mounted on the rearview mirror shaft 14a by the mounting bracket 15 is the rearview mirror 14 and the windshield 1.
The antenna installation base plate 16 is adjusted so that it is located between the antenna 3 and 3b and faces substantially upward. This adjustment is performed by the shaft support screws 20, 2
This is done by loosening 1. That is, the rear shaft support screw 2
1 to loosen the variable support stay 19 to the lower mounting plate 18
Sliding and moving up and down with respect to the antenna installation base plate 16
At the position where the GPS antenna body 11 fixed to the vehicle is hidden behind the rearview mirror 14 when seen from the driver and is located as close to the windshield 13b as possible, the pivot support screw 21 is tightened to attach the variable support stay 19 to the lower mounting plate. Fixed to 18.

In this state, the front shaft support screw 20 is loosened to allow the antenna installation base plate 16 to swing with respect to the variable support stay 19, and the GPS antenna main body 11 is seen through the windshield 13b while observing the reception status. The antenna installation base plate 16 is fixed to the variable support stay 19 by arranging the antenna support base plate 16 upward and then tightening the shaft support screw 20 again in this state.

In this way, the mounting of the GPS antenna main body 11 is completed, and the navigation device main body side can receive signals from the artificial satellite. In the mounting of the GPS antenna main body 11 as described above, when the distance between the rearview mirror 14 and the windshield 13b is small (this distance depends on the vehicle model), the variable support stay 19 is removed and the antenna installation base plate 16 is attached to the lower mounting plate 18 It can be directly tightened and fixed by the shaft supporting screw 20.

Further, in the variable support stay 19, a plurality of through holes may be formed at appropriate intervals in the longitudinal direction instead of the guide holes continuous in the longitudinal direction. 4 and 5 show another embodiment. In this embodiment, the GPS antenna body 11 is provided with a rearview mirror 14
It is to be attached to the back side of.

That is, in this example, the GPS antenna main body 11 is mounted on the back surface of the rearview mirror 14 by the mounting bracket 31 having a universal joint. In the mounting bracket 31 of this example, the antenna installation base plate 32 is attached to the base plate 33 as a ball. The antenna device base plate 32 is configured to be connected via a joint (ball joint) 34 so that the antenna device base plate 32 can rotate with respect to the base plate 33 and can tilt in any direction.

The mounting bracket 31 is fixed to the rear surface of the rearview mirror 14 at the base plate 33. This fixing can be performed by bonding with a double-sided adhesive sheet, screwing, etc., and in this fixed state, the GPS antenna main body is mounted on the antenna installation base plate 32. 11 is fixed by adhesion or the like with the double-sided adhesive sheet 35, and the connection cord 12 derived from the GPS antenna main body 11 is connected to the navigation device main body.

The direction of the GPS antenna body 11 is variably adjusted via the ball joint 34 while observing the reception status on the navigation device body side.

As described above, also in this embodiment, the GPS antenna main body 11 is installed between the rear side of the rearview mirror 14 and the windshield 13b, and does not come into the driver's view.

Although the mounting bracket 31 of this example has a structure in which the antenna installation base plate 32 and the base plate 33 are connected by the ball joint 34, another universal joint can be used instead of the ball joint 34. is there. That is, the antenna installation base plate 32 may be connected to the base plate 33 so as to be rotatable and tiltable in an arbitrary direction.

In both of the above embodiments, the GPS antenna main body 11 is used.
In the vehicle interior 13a of the vehicle body 13, the GPS antenna body 11 is installed between the rearview mirror 14 and the windshield 13b. It can be attached to other parts.

In this case, in the mounting bracket 15, the upper and lower mounting plates 17 and 18 are provided depending on the supporting member.
The shape of the mounting bracket will be changed and the mounting bracket 3
In No. 1, the shape of the base plate 33 is changed according to the mounting surface, and the fixing method is selected from adhesion by a double-sided adhesive sheet or screwing.

It is preferable that the antenna mounting base plates 16 and 32 of the two mounting brackets 15 and 31 have a shape that substantially matches the shape of the lower surface of the GPS antenna body 11.

The embodiment of the present invention has been described above, but the present invention is not limited to this embodiment, and various modifications can be made without departing from the spirit of the present invention.

The antenna device according to the present invention is a GPS device.
The present invention can be applied to various receiving devices such as a time information receiving device that receives time information about the world standard time at an arbitrary point on the earth by using the positioning system using.

[0038]

As described above, according to the present invention, since the GPS antenna of the navigation device is mounted in the vehicle compartment so that the direction can be changed at a required interval with respect to the window glass, it is possible to prevent theft and to wash the vehicle. Means for removing and storing can be omitted.

Moreover, since the direction of the GPS antenna can be variably adjusted according to the reception situation, the signal from the artificial satellite can always be received in a good condition, and the current position can be accurately confirmed by the navigation device. By arranging it between the windshield and the windshield, the driver's view is not hindered and reception can be further improved.

[Brief description of drawings]

FIG. 1 is a side view showing an attached state of an example of an antenna device according to the present invention.

FIG. 2 is a perspective view of the same.

FIG. 3 is an exploded perspective view of an example antenna device.

FIG. 4 is a side view showing an attached state of an antenna device of another example.

FIG. 5 is an exploded perspective view of an antenna device of another example.

FIG. 6 is a system configuration diagram of a navigation device.

FIG. 7 is an explanatory diagram showing a display example of the same.

[Explanation of symbols]

 1 Positioning Unit 2 Antenna 3 System Controller 4 Disk Drive 5 Image Processing Unit 6 Display Device 11 GPS Antenna Main Body 13 Vehicle Body 13a Cabin 14 Rearview Mirror 14a Rearview Mirror Shaft 15, 31 Mounting Bracket 17, 18 Mounting Plate 19 Variable Support Stay 16 , 32 Antenna installation base plate 33 Base plate 34 Ball joint

Claims (4)

[Claims] 1. A vehicle position detection means, a map data storage means, and a display means for displaying a map in the vicinity of the position detected by the detection means based on the map data stored in the map data storage means. In the navigation device for displaying the vehicle position detected by the detection means on the map displayed by the display means, an antenna connected to the detection means for receiving a signal from an artificial satellite is provided in the vehicle interior of the vehicle. An antenna device in a navigation device, wherein the antenna device is mounted on a window glass at a required interval so as to be changeable in direction by a mounting means. 2. The antenna device in a navigation device according to claim 1, wherein the antenna is installed between a rearview mirror and a windshield in a vehicle compartment. 3. The antenna device in a navigation device according to claim 1, wherein the antenna is attached to a rearview mirror stay in a vehicle compartment by a mounting means and is located on a rear surface side of the rearview mirror. 4. The antenna device in a navigation device according to claim 1, wherein the antenna is attached to a rear surface of a rearview mirror in a vehicle compartment by means of mounting means capable of changing direction.