JPH10242726A - Antenna mount structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a GPS antenna in a cabin and to extend a reception range. SOLUTION: A GPS antenna 2 is fitted under a glass-made sun roof glass 3 on a ceiling of a cabin. Specifically, the antenna 2 is fitted to a rear side of an insulating trough 5 between the sun roof glass 3 and an interior lining 4. Through the provision of the GPS antenna 2 as above, the GPS antenna 2 is not visible externally. Furthermore, the interruption of a radio wave due to the roof of a vehicle is not almost caused, then the reception range is extended.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an antenna on a vehicle, and more particularly to a structure for mounting a GPS antenna for a vehicle for receiving radio waves from GPS satellites.

[0002]

2. Description of the Related Art There is a navigation apparatus that detects a traveling position in a vehicle by receiving radio waves from GPS satellites and provides traveling guidance. The radio wave from the GPS satellite is received by the GPS antenna. Conventionally, this GPS antenna is installed outside the vehicle such as a door of a trunk, or installed on a dashboard near a windshield in the vehicle or near a rear glass behind a rear seat in the vehicle.

[0003]

However, when the GPS antenna is installed outside the vehicle, the appearance of the vehicle is impaired. Further, when a hole for the GPS antenna installation wiring is formed in the body, there is a problem that the portion is exposed to the external environment and rusts. Further, when the GPS antenna is installed in the vehicle, there is a problem that the reception range is narrowed because radio waves are blocked by the roof of the vehicle made of metal.

[0004] The present invention has been made in view of the above point, and an object of the present invention is to provide it in a vehicle cabin and widen a reception range.

[0005]

In order to achieve the above object, the following technical means are employed. According to the first aspect of the present invention, the radio wave is received from the upper part of the vehicle below the cover (3), which is made of a material that does not block the radio wave, and covers the opening of the vehicle ceiling. Antenna (2) is attached.

By arranging the antenna (2) in this manner, the antenna (2) can be prevented from being recognized from the outside. In addition, since the electric wave is not substantially blocked by the roof of the vehicle, the reception range can be widened. Specifically, as shown in claim 2, the antenna (2) can be mounted between the cover (3) and the lining (4) mounted in the passenger compartment, and more specifically, As shown in item 3, the antenna (2) can be attached to the back surface of the gutter (5) made of a material that does not block radio waves for preventing water from entering the vehicle interior. In addition,
Even in these cases, the same effect as in claim 1 can be obtained if the gutter (5) does not block the radio waves.

A GPS antenna (2) is used as an antenna, and a sunroof glass (3) is used as a cover.
Can be adopted.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 1 is a schematic diagram in which a GPS antenna is mounted on a vehicle under a tilt-up type sunroof glass. FIG. 2 shows a specific arrangement cross-sectional view of the GPS antenna. Hereinafter, the arrangement of the GPS antenna will be described with reference to FIGS.

[0009] As shown in FIG.
The S antenna 2 is mounted on the ceiling of the vehicle interior below the sunroof glass (cover) 3. Here, the sunroof glass 3 is made of glass that is a material that does not block radio waves. The sunroof glass 3 may be made of any other material other than a conductive material that blocks radio waves.

A specific arrangement of the GPS antenna 2 will be described. In a vehicle equipped with sunroof glass, when the sunroof glass 3 is tilted up and opened as shown by a dotted line in the figure, there is a gap between the sunroof glass 3 and the lining 4 of the vehicle interior so that water does not enter the cabin. A resin gutter 5 is formed. The gutter 5 is formed adjacent to one side 6a in front of the vehicle in the inside of the substantially quadrangular window portion 6 for accommodating the sunroof glass 3, and is partially reinforced to improve durability. I have. The gutter 5 has an S-shaped cross section at the reinforcing portion, and the GPS antenna 2 is disposed in a space defined by the reinforcing portion and the lining 4.
Since the gutter 5 is formed of a resin, the gutter 5 does not block radio waves even if it covers the GPS antenna 2.

[0011] The mounting of the GPS antenna 2 will be described in detail. A metal stay 7 is fixed to the gutter 5 with screws, and the GPS antenna 2 is held on the stay 7. Further, a magnet is provided on the back surface of the GPS antenna 2, and the GPS antenna 2 is held on the stay 7 by the magnet. Although the stay 7 is made of metal, it is located on the back surface of the GPS antenna 2 and does not block radio waves.

As described above, the GPS is installed under the sunroof glass 3 made of glass that does not block radio waves and on the ceiling of the vehicle interior.
By disposing the antenna 2, the GPS antenna 2
Can be prevented from being recognized from the outside, so that the appearance of the vehicle is not spoiled. Further, since there is almost no portion where radio waves are blocked by the roof of the vehicle, the reception range can be widened. In addition, GPS antenna 2
Antenna 2 because it is not exposed to the external environment
Can be improved in durability.

In this embodiment, the GPS antenna 2 is attached to the gutter 5, but the sunroof glass 3
The same effect can be obtained even if it is attached to other places as long as it is a ceiling portion of the vehicle interior below the ceiling. The present invention relates to GP
The present invention can be applied not only to the S antenna but also to all antennas that receive radio waves from above the vehicle, such as a satellite broadcast receiving antenna and a vehicle antenna for an automatic toll collection system.

[Brief description of the drawings]

FIG. 1 is a schematic diagram when a GPS antenna 2 is mounted below a sunroof glass 3 in a vehicle.

FIG. 2 is a cross-sectional view showing a specific mounting position of the GPS antenna 2 under a sunroof glass 3.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... vehicle, 2 ... GPS antenna, 3 ... sunroof glass, 4 ... lining, 5 ... gutter, 5a gutter reinforcement part, 6 ... window, 7 ... stay.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI H01Q 1/32 H01Q 1/32 Z 1/42 1/42 (72) Inventor Katsumi Nakamura 1-1-1, Showa-cho, Kariya-shi, Aichi Prefecture Inside DENSO Corporation

Claims (4)

[Claims] An antenna (2) for receiving radio waves from a vehicle upper direction under a cover (3) made of a material that does not block radio waves and covering an opening in a vehicle ceiling. ) Is attached to the antenna. 2. The antenna mounting structure according to claim 1, wherein the antenna (2) is mounted between the cover (3) and a lining (4) mounted in a vehicle interior. 3. The antenna according to claim 1, wherein the antenna is mounted on a back surface of an insulating gutter for preventing water from entering the vehicle interior. Construction. 4. The antenna mounting structure according to claim 1, wherein the cover is a sunroof glass (3), and the antenna is a GPS antenna (2).