JP2584080Y2 - Mirror device for vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle mirror device capable of oscillating an individual recognition signal of a vehicle.

[0002]

2. Description of the Related Art There is an increasing need to recognize vehicles individually when carrying out traffic type surveys, parking fees, collection of tolls for expressways, and the like. Currently, in addition to the introduction of a part of a management system using an IC card at a collection site or construction site, it is considered that barcodes may be displayed on the roof of the vehicle. Not proposed.

[0003]

As described above, the use of an IC card as described above is incorporated in a special management system, so that handling of the IC card is complicated.
Further, the latter bar code method causes the outer surface of the vehicle to be soiled or the appearance of the vehicle to be deteriorated. Furthermore, usually, a method of writing the individual recognition sign with a special paint so that it cannot be seen from the outside can be considered, but it takes time and effort.
There is a possibility that the discrimination may not be possible due to a change in the history, a stain on the vehicle, or the like. SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle mirror device that facilitates individual identification of a vehicle.

[0004]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides a method for identifying and recognizing an individual identification code of a vehicle in a housing of a door mirror or an inner mirror mounted on the vehicle.
Individual recognition signal generating circuit and the identification to generate the issue of signal
Modulates the recognition signal to have the frequency and power as radio waves.
Radio emission device that includes a circuit that generates a
And a mirror having a reflection film, the said radiating device
It is characterized in that the specular reflection film is used as an antenna for radio wave emission by connecting to the specular reflection film.

[0005]

The receiver is installed on the ground, and when the vehicle passes through the location, the individual identification and recognition of the vehicle transmitted from the vehicle is performed.
Code according to the type of vehicle, model, received signal such as a registration number
The information is transmitted to the device side and can be used for information such as traffic surveys and parking management .

[0006]

1 is a partially cutaway front view showing an example of a vehicle mirror device according to the present invention, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG. The mirror body 2 attached to the stay 1 fixed in the vehicle interior has a mirror (mirror) 3 on the front surface, and inside the mirror body 2 an anti-glare switching mechanism 4 and a radio wave emitting device 5
Is built in. The radio wave emitting device 5 is fixed to a support 6 protruding from the inner wall of the mirror body 2 as shown in FIG. A spring contact 7 for preventing chatter and connecting to the aerial is brought into contact with each other near both ends of the reflection surface 8 on the back surface of the mirror. Although the illustrated example shows an inner mirror, the present invention can be applied to a door mirror.

FIG. 3 is a block diagram of a radio wave emitting device in the vehicle mirror according to the present invention.
Modulation circuit 11, individual identification signal generation circuit (ID circuit) 12, power amplification circuit 13, antenna impedance matching circuit 14
And the antenna 15.

The oscillating circuit 10 oscillates a fundamental frequency, for example, 20 to 30 MHz using a quartz oscillator or the like. When the desired frequency is high, the frequency may be multiplied. Modulation circuit 11
Represents the individual ID signal (encoded signal) as a pulse, frequency,
Change to amplitude etc. and incorporate it into the carrier. The individual identification signal generating circuit 12 creates an individual identification code,
OM is used. Power amplification circuit 13 amplifies signals from oscillation circuit 10 and modulation circuit 11. The antenna impedance matching circuit 14 matches the impedance between the power amplification circuit 13 and the antenna 15.

[0009]

[Effect of the Invention] Vehicle given from the rearview mirror of the vehicle
Information such as the type, model, and registration number of a vehicle that has passed near the ground receiving station can be processed by the individual identification and recognition code . Further, the antenna 15 is built in a door mirror or an inner mirror. In particular, since the door mirror protrudes from the vehicle body, it is separated from the body (earth), thereby improving the radio wave emission efficiency. Also, since both the door mirror and the inner mirror are not damaged by rainwater or mud,
Does not adversely affect radio emission. In addition, since the vehicle that emits the individual identification signal is a vehicle mirror, it is not necessary to take special consideration into a normal vehicle style and design. Furthermore, since it is mounted at a position separated from electrical components such as engine control, other electrical components are not affected.

[0009]

According to the present invention, information such as the type, model, and registration number of a vehicle passing through a ground receiving station can be processed by a signal from a radio wave emitting device. The antenna 15 is built in a door mirror or an inner mirror. In particular, since the door mirror protrudes from the vehicle body, it is separated from the body (earth), thereby increasing the efficiency of radio wave emission. Also, since both the door mirror and the inner mirror are not damaged by rainwater or mud, they do not adversely affect radio wave emission. In addition, since the vehicle that emits the individual identification signal is a vehicle mirror, it is not necessary to take special consideration into a normal vehicle style and design. Further, since the engine control and the like are mounted at a position separated from the electric appliances, there is no influence on other electric appliances.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a mirror device for a vehicle of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a block diagram of the vehicle individual signal emitting device in the vehicle mirror device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stay 2 Mirror body 3 Mirror 4 Anti-glare switching mechanism 5 Radio wave emitting device 6 Support 7 Spring contact 8 Reflection surface 10 Oscillation circuit 11 Modulation circuit 12 Individual identification signal generation circuit 13 Power amplification circuit 14 Antenna impedance matching circuit 15 Antenna

Claims (1)

(57) [Scope of request for utility model registration] An individual identification code of a vehicle is provided in a housing of a door mirror or an inner mirror mounted on the vehicle.
Individual recognition signal generating circuit and the identification to generate the issue of signal
Modulates the recognition signal to have the frequency and power as radio waves.
Radio emission device that includes a circuit that generates a
And a mirror having a reflection film, the said radiating device
A mirror device for a vehicle, wherein a mirror reflection film is used as an antenna for radio wave emission by being connected to the mirror reflection film.