JP2001289660A - Navigator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigator which realizes an adequate route guidance by surely transferring information about the direction under guidance to the driver in a simple constitution. SOLUTION: Two speakers RS, LS are provided on the right and left sides of a driver's seat. If a direction information 'right direction' exists on a route guidance, the volume of the right speaker RS is increased and that of the left speaker LS is decreased to move an sound image from a point Y to a point Z during outputting of a guidance voice and a direction indicating voice. If a direction information 'left direction' exists on the route guidance, the volume of the right speaker RS is decreased and that of the left speaker LS is increased to move the sound image from the point Y to a point X during outputting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle guidance technique for driving a vehicle along a guide route to a destination, for example.

[0002]

2. Description of the Related Art There is known a navigation device which detects a position by a GPS or the like as a vehicle travels, calculates and obtains an appropriate route from a current position to a destination, and further provides voice guidance for the route. ing. In such a navigation device, for example, when a vehicle approaches an intersection where a right or left turn is required, guidance by voice is generally performed a plurality of times.

For example, the distance to the intersection is 700 m
Judging that it has become 300m and 100m, at each timing "approximately 700m ahead, to the left"
Guidance by voice such as "approximately 300 meters ahead, left direction" or "soon left direction" is provided.

[0004]

However, there is a possibility that a driver who concentrates on driving may miss the above-mentioned guidance, and in particular, whether the driver is "leftward" or "rightward". If the information is mistaken, the result is that the information deviates greatly from the guide route.

As a technique for solving this problem, there is a technique disclosed in Japanese Patent Application Laid-Open No. 7-103781. In this technique, a virtual sound source is provided on a route to a destination, and the virtual sound source is moved on the route in a direction away from the vehicle. In this case, it is sufficient to drive the vehicle so as to follow the virtual sound source, so that it is possible to prevent the information about the direction from being confused.

However, this technology includes the following (1) to
The problem shown in (3) remains. (1) An increase in the distance between the vehicle and the virtual sound source gives the driver a feeling of anxiety that the vehicle is left behind from the virtual sound source preceding the vehicle. Therefore, for example, when the distance between the intersections A and B is short as shown in FIG. 6A, the intersection A in front of the intersection B turns left despite the virtual sound source moving to the left at the intersection B. Possibilities arise.

[0007] (2) The problem of giving an uneasy feeling shown in the above (1) is pointed out in the above-mentioned publication, and it is stated that the problem can be dealt with by shortening the distance between the virtual sound source and the vehicle. However, in that case, there is a possibility that the driving operation with a margin may be hindered. For example, as shown in FIG. 6B, if the distance between the vehicle and the virtual sound source is short, the virtual sound source moves to the left. Sometimes you can't. As a result, a situation such as passing a guidance intersection may occur.

(3) In addition, arithmetic processing for providing a virtual sound source on a path becomes complicated, and as a result, the configuration of the apparatus becomes complicated. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and provides a navigation device that can be easily configured and that reliably transmits information about a direction during guidance to a driver to realize appropriate route guidance. The purpose is to do.

[0009]

The navigation apparatus according to the present invention provides voice guidance at a predetermined timing according to a route to a destination. The predetermined timing is a timing at which a driving operation with a margin becomes possible. For example, 700m · 3 before the guidance intersection
Guidance is provided at 00m and 100m.

In the present invention, in particular, the direction information transmitting means transmits the direction information included in the guidance to the driver of the vehicle at a timing at which the guidance can be emphasized. The timing at which the guidance can be emphasized may be a timing close to the guidance as described later. This is because if the transmission of the direction information is temporally separated from the guidance timing, the relation with the guidance cannot be understood. The direction information here includes at least information indicating the left direction and the right direction. For example,
The guidance of "soon left" at the guidance intersection includes direction information of "left". In addition, there is "merge from right" in expressways
Includes the direction information “rightward”.

It is conceivable that the transmission of such direction information is performed, for example, by moving the sound image of the guidance voice at the timing of performing the guidance. The sound image movement of the guidance sound is performed by changing the volume from each of the plurality of speaker devices. For example, the volume of the speaker devices arranged on the left and right of the driver is changed, and if the direction information of the guidance indicates the left direction, the sound image of the guidance voice is moved to the left of the driver,
On the other hand, if the direction information indicates the right direction, the sound image of the guidance voice is moved to the right side of the driver. It should be noted that the guidance “5 km or more on the road” may include the direction information “forward” on the route.

Therefore, the speaker device may be arranged before and after the driver, and the sound image of the guidance sound may be moved in the front and rear direction of the driver. It is sufficient that the above-described sound image movement is performed in the vehicle interior as described in claim 3. In this way, the driver can sense the direction information during guidance through hearing, and does not confuse whether the information is "left direction" or "right direction". In addition, at the timing of guidance (for example, 700
Since it is possible to reliably determine whether the vehicle is moving in the left direction or in the right direction (at a distance of m), driving with a margin is realized.

As a result, it is possible to prevent the vehicle from turning in front of the guidance intersection or passing through the guidance intersection as in the related art. Thereby, appropriate route guidance is realized. Further, since the sound image is merely moved in the left-right or front-back direction, the processing content as the direction transmitting means is simple. That is, the configuration of the navigation device does not become complicated.

It is not always necessary to move the sound image of the guidance voice. That is, as described in claim 4, before or after the timing at which the guidance is performed, the volume of the sound from the plurality of speaker devices may be changed to move the sound image of the direction indicating sound. The direction indicator sounds here include:
An example is a beep sound such as “pi, pi, pi, pi, pi”. In this case as well, it is sufficient that the sound image is moved in the vehicle cabin. Even in this case, it goes without saying that the same effect as when the sound image of the guidance sound is moved can be obtained.

Further, it is desirable to move the sound image of the direction indicating sound in addition to the movement of the sound image of the guidance voice, because the direction information in the guidance is further emphasized (claims 6 and 7). By the way, when moving the sound image,
It is preferable that the sound volume from the speaker device is gradually changed to smoothly move the sound image. For example, when indicating the left direction, the sound image is smoothly moved from the center of the driver to the left side. In this way, the movement of the sound image can be experienced, so that the driver can more easily experience the direction information.

The driver determines the movement of the sound image based on information from the left and right auditory organs. Therefore, considering the left and right movement of the sound image, the sound from the speaker device arranged on the left side of the driver reaches only the left ear of the driver, and the sound from the speaker device arranged on the right side is the right side of the driver. Ideally, it should only reach the ears. Therefore, it is conceivable to arrange at least two speaker devices on both sides of the headrest in the driver's seat, as described in claim 9. This increases the possibility that the left-right direction information can be more accurately transmitted to the driver.

Further, the volume from each speaker device may be calculated by the direction information transmitting means each time based on the direction information in the guidance. By doing so, the CD-RO on which the guidance voice is recorded
Conventional M and DVD-ROM can be used as they are. On the other hand, it may be stored in advance in accordance with the direction information in the guidance (claim 11). For example, the sound volume from each speaker is recorded together with the guidance sound on a CD-ROM or DV.
It is stored in a D-ROM. By doing so, it is not necessary to calculate the volume from each speaker, so that the configuration of the direction information transmitting means is simplified, and the configuration of the present navigation device is further simplified.

The configuration for transmitting direction information to the driver by moving the sound image has been described above. However, the present invention is not limited to the movement of the sound image, and it is only required that the direction information can be transmitted to the driver. For example, as shown in claim 12, at the timing of performing the guidance or before or after the guidance,
The direction indicating light may be moved at a position that will enter the field of view of the driver. The movement of the direction indicating light is, for example, L
This can be realized by arranging EDs and the like side by side and lighting those LEDs in order. In addition, the position that will be in the field of view of the driver means a position where the driver can see without moving the viewpoint. Therefore, as an example, it is conceivable to arrange the above-mentioned LEDs on the dashboard. Needless to say, in addition to the movement of the sound image as described above, it is more preferable to perform such movement of the direction indicating light (claim 13).

[0019]

Embodiments of the present invention will be described below with reference to the drawings. It is needless to say that the embodiments of the present invention are not limited to the following examples, and can take various forms as long as they belong to the technical scope of the present invention.

FIG. 1 is a block diagram showing the overall configuration of a vehicle-mounted navigation device 1 as an embodiment. The in-vehicle navigation device 1 is mainly configured with a control unit 10, and a position detector 20 connected to the control unit 10,
A map data input device 30, an operation switch group 40, an external memory 50, a display device 60, an audio output device 70, and a remote control sensor 80 are provided. The control unit 10 is configured as a normal computer, and includes a CPU,
A ROM, a RAM, an I / O, and a bus line for connecting these components are provided.

The position detector 20 includes a well-known geomagnetic sensor 21, a gyroscope 22, a distance sensor 23,
And G for detecting the position of a vehicle based on radio waves from satellites
It has a GPS receiver 24 for a PS (Global Positioning System). Each of these sensors 21 to 24 has an error having a different property, so that a plurality of sensors are used while interpolating each other. Note that, depending on the accuracy, a part of the above-described components may be used, and a rotation sensor for the steering wheel, a wheel sensor for each rolling wheel, or the like may be used.

The map data input device 30 is a device for inputting so-called map matching data for improving the accuracy of position detection, map data, and guidance data for guidance on routes. These data are input from a DVD-ROM as a recording medium. In this embodiment, the DVD-ROM is used, but other media such as a CD-ROM and a memory card may be used.

The guidance data is stored for two channels of R channel and L channel, and guidance sound corresponding to each guidance sound is stored in each channel in the PCM system. The guidance voice is voice data such as "soon to the right", and the directional sound is beep data "pi, pi, pi, pi, pi" for emphasizing direction information included in the guidance voice. .

In the route guidance processing, such guidance data is read out by the control unit 10 at a predetermined timing and output to the audio output device 70. As shown in FIG. 2A, the audio output device 70 includes a built-in speaker SP, a right speaker RS, and a left speaker LS. The built-in speaker SP is attached around the navigation screen, and outputs an operation sound of the vehicle-mounted navigation device 1. On the other hand, as described above, the guidance sound input as digital data from the map data input device 30 and the corresponding direction indicating sound are output from the right speaker RS and the left speaker LS. That is, D
The guidance sound and the direction sound based on the data of the R channel stored in the VD-ROM are transmitted to the right speaker RS.
, On the other hand, a guidance voice and a directional sound based on the data of the L channel are output from the left channel. The volume of these R and L channels is
DVD-ROM based on the direction information in the guidance
Is stored in

Further, the right speaker RS and the left speaker LS are small speaker devices, and are disposed on both sides with respect to a driver's seat headrest. This is as shown in FIG. Thus, the sound from the right speaker RS is mainly transmitted to the driver's right ear, and the sound from the left speaker LS is mainly transmitted to the driver's left ear.

The display device 60 is a color display using a liquid crystal, a CRT, or the like. Via the display device 60, information is displayed from the in-vehicle navigation device 1 to the user. The operation switch group 40 includes a touch switch or a mechanical switch integrated with the display device 60 described above, and is used for various inputs.

The external memory 50 is a hard disk device for storing necessary information for executing various processes. However, as long as information can be stored, a semiconductor memory device other than the hard disk device, for example, may be used. The remote control sensor 80 is a remote control terminal (hereinafter referred to as “remote control”) 8.
Obtain the user's operation information via 0a.

With such a configuration, a so-called navigation function is realized. The screen of the display device 60 includes a vehicle current position mark input from the position detector 20, map data input from the map data input device 30, and additional data such as a guide route, a name, and a mark to be displayed on the map. Can be superimposed and displayed. Then, in the in-vehicle navigation device 1, the position of the destination and, if necessary, the designation of a specific route such as an expressway (ie, the designation of a passing point) from the remote control sensor 80 via the remote controller 80a and from the operation switch group 40. When the user inputs "designate", an optimal route from the current location to the destination is automatically selected, and a so-called guide route is formed and displayed. As a technique for automatically setting the optimum route, a technique such as the Dijkstra method is known. After the guidance route is formed and displayed, the control unit 10 outputs the above-described guidance sound and direction indication sound mainly for route guidance via the sound output device 70 according to the traveling state of the vehicle. .

The on-vehicle navigation device 1 according to the present embodiment has a feature in outputting the guidance voice and the direction indicating sound, which will be described below. The volume information of the R / L channel of the guidance voice and the directional sound is DV.
The fact that the data is stored in the D-ROM has already been described. The volume information is stored so that the sound image of the guidance voice and the direction indicating sound is moved rightward or leftward in accordance with the direction information during guidance.

For example, "approximately 700m ahead, right direction"
-"Approximately 300m ahead, right direction"-"Soon, right direction"-Guidance voice "Merging from right" has direction information "right direction", so the speech period of this guidance voice Has stored therein volume information so as to increase the volume of the R channel and decrease the volume of the L channel. In this embodiment, the volume is linearly increased / decreased. In this case, the volume of the R channel is linearly increased from VB to VH during the output period as shown in FIG. As shown in FIG. 4B, the volume of the L channel linearly decreases from VB to VL during the output period as shown in FIG. Therefore, when the guidance voice is read and output to the voice output device 70, the sound image moves to the right side of the driver according to the volume information. If the sound volume changes as shown in FIG. 4, the sound image smoothly moves from the center of the driver to the right side during the speech period. FIG. 3 shows a schematic view of the vehicle interior. For example, the sound image moves smoothly from point Y to point Z during the sound output period.

Conversely, "approximately 700m ahead, left direction"
-"Approximately 300 m ahead, left direction"-"Soon, left direction"-There is direction information "left direction" in the guidance "Merging from the left", so during the speech period of this guidance voice Increases the volume of the L channel and decreases the volume of the R channel,
Volume information is stored. In this case, contrary to the above example, the change in the volume of the L channel is as shown in FIG. 4A, and the change in the volume of the R channel is as shown in FIG. 4B. Therefore, when the guidance voice data is read and output to the voice output device 70, the sound image moves to the left side of the driver according to the volume information. If there is a volume change as shown in FIG. 4, the sound image moves smoothly from the center of the driver to the right during the speech period. In FIG. 3, the movement from point Y to point X is smoothly performed during the audio output period.

In the example described above with reference to FIG. 4, the volume is changed at a constant rate during the audio output period.
The left and right sides may have the same volume until the middle of the output period, and the volume may be changed from the middle of the output period. If you do this, you can say “approximately 300 meters ahead, right” or “
"Approximately 30" in the guidance voice
"0m ahead" and "soon" can be heard from the center, and only the "right" part can be heard from the right as the end approaches. In the above-described example, the volume is changed linearly. However, the volume may be increased or decreased stepwise. In that case, the movement of the sound image also becomes step-like.

Further, in the above-described example, at the start of output, the left and right sound volumes are made equal, and the sound image is moved from the center to the right or left. On the other hand, by changing the volume information of the R / L channel from the example of FIGS. 4A and 4B, when emphasizing the right direction, the sound image is moved from the left side to the right side of the driver, Conversely, when emphasizing the left direction, the sound image may be moved from the right side to the left side of the driver.

The direction indicating sound (beep sound, etc.) is output in the form of "p, p, p, p, p" following the guidance voice. The volume information similar to the above-described guidance voice is stored in the output period of the direction indicating sound. That is, if there is directional information indicating the right direction during the guidance, the volume information is stored so that the volume of the R channel is increased and the volume of the L channel is decreased. On the other hand, if there is left direction information during the guidance, L
Volume information is stored so as to increase the volume of the channel and decrease the volume of the R channel.

Accordingly, the direction sound is also heard to move to the right or left side of the driver during the output period.
Note that, as in the case of the guidance voice, the volume change may be changed from the middle of the output period, or may be changed stepwise.

According to such an on-vehicle navigation device 1, even if the content indicating the direction of the output guidance voice itself cannot be heard (recognized), the driver can sense the direction information during guidance through hearing. (That is,
You can intuitively know and intuitively know) and do not confuse whether information is "left direction" or "right direction". Moreover, since the sound image and the direction instruction sound of different contents are gradually moved from the front of the guide intersection to the sound image, it is possible to reliably determine the direction to bend from the front of the guide intersection to just before turning. Driving with a margin is realized. In addition, in a car environment in which various noises are generated during traveling, the contents of the guidance voice are often inaudible, but even in such a situation, the direction information of the guidance voice can be reliably read.

The movement of the sound image described above is different from the technique disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-103781 in which a virtual sound source set outside and forward of the vehicle is moved along the course. Set to be performed,
In addition, since the guidance voice whose contents have been changed in a stepwise manner as the vehicle approaches the intersection from before the guidance intersection to be turned, the route guidance can always be efficiently performed. As a result, it is possible to prevent the vehicle from turning in front of the guidance intersection or passing through the guidance intersection as in the related art.

In this embodiment, the volume information for moving the sound image is stored in the DVD-ROM in advance, so that the control unit 10 does not need to perform a calculation process for moving the sound image. I have. Thereby, the configuration of the in-vehicle navigation device 1 becomes extremely simple.

Further, in the present embodiment, as shown in FIG. 4, the change of the volume according to the volume information is performed linearly. As a result, the sound image of the guidance sound or the direction indicating sound moves smoothly, and the movement of the sound image can be sensed, so that the driver can easily sense the direction information.

The driver judges the movement of the sound image based on information from the left and right hearing organs. Therefore, considering the left and right movement of the sound image, the sound from the speaker device arranged on the left side of the driver reaches only the left ear of the driver, and the sound from the speaker device arranged on the right side is the right side of the driver. Ideally, it should only reach the ears. Therefore, in the present embodiment, the right speaker RS and the left speaker LS are arranged on both sides of the headrest. Thereby, the direction information can be more accurately transmitted to the driver.

In this case, if the right speaker RS and the left speaker LS are arranged on both sides of the rod-shaped stay and these stays can be detachably attached to the stay of the headrest, the present device can be easily attached to the vehicle at any time. It can be installed and used. Of course, it may be embedded in the left and right headrests or on both sides of the seat. This is advantageous in that the appearance is improved.

It should be noted that the control unit 10 in this embodiment and
Audio output device 70, right speaker RS, left speaker L
S corresponds to “direction information transmitting means”. [Others] (A) In the above embodiment, the guidance sound and the direction indicating sound following the guidance sound are output while moving the sound image. However, it is naturally possible to output only the guidance sound while moving the sound image, or to move and output only the sound image of the direction indicating sound without moving the sound image of the guidance sound.

In the above embodiment, the right speaker RS
Although the sound image is moved by changing the volume of the left speaker LS during the output period, the simplest configuration is to output a guidance sound including right direction information and a subsequent direction indicating sound from the right speaker RS. The guidance sound including the left direction information and the direction indicating sound following the guidance sound may be output from the left speaker LS. However, in this case, since there is no sound image movement during the output period, the degree of transmission of the direction information is lower than in the case where the sound image is moved.

(B) In the above embodiment, the volume information is stored in advance in the DVD-ROM in which the guidance sound and the direction sound are stored. On the other hand, the control unit 10 calculates the volume information according to the guidance, and based on the volume information calculated by the control unit 10, the sound output device 7.
0 may output a guidance voice and a direction indicating sound. For example, the control unit 10 searches for the words “right” and “left” in the guidance, and calculates volume information based on the search result. With this configuration, although the configuration of the control unit 10 is complicated as compared with the above-described embodiment, it is advantageous in that a conventionally used medium such as a DVD-ROM can be used as it is. Control unit 1
Since 0 only calculates the left and right volume information, such a comparison is made with a case where information such as a volume corresponding to a virtual sound source position on a route is calculated as in the device described in the above-mentioned publication. Even with the configuration, the control unit 10 becomes sufficiently simple.

(C) In the above embodiment, the sound image is moved left and right by two channels. However, the sound image can be constituted by three or more channels. For example, in the case of four channels, a configuration including a front speaker FS and a rear speaker BS as shown by a broken line in FIG. At this time, the speakers FS,
Place the BS. For example, the front speaker FS is arranged above a steering boss, and the rear speaker BS is arranged behind a rear seat. In this way, it is possible to cope with the guidance "5 km or more on the road." That is, since it is considered that the guidance includes the direction information of “forward” on the route, the sound image of the guidance voice is moved from the rear of the driver to the front in the vehicle cabin.

Further, in the case of 6 channels, FIG.
As shown by a broken line in the middle, a configuration including an upper speaker US and a lower speaker GS can be considered. In this case, the speakers US and GS are arranged above and below the driver. For example, the upper speaker US is arranged on a ceiling, a sun visor, or the like, and the lower speaker GS is arranged below a seat, on a floor mat, or the like. If you do this, “○ ×
It is an inter exit. "
That is, since it is considered that the guidance includes direction information of "downward" on the route, the sound image of the guidance voice is moved from above to below the driver. Of course, by moving the sound image of the guidance sound upward from below, it is possible to cope with the guidance "Ox inter entrance".

The upper and lower speakers US and GS are 6
You do not need to use it only for channels,
The combination with the left and right speakers LS and RS, the combination with the front and rear speakers FS and BS, and the use of only the upper and lower speakers US and BS are possible. Further, similarly to the above-described embodiment, it is also possible to use a direction indicating sound such that the sound image or the light source moves in the vertical direction. These direction indicating sounds can be used in combination with the upper and lower speakers US and GS.

The volume information of the channel (U / G channel) of the guidance sound and direction indication sound related to the up-down direction described above is stored in the DVD-ROM, but as described in (b) above. Alternatively, the control unit 10 may be caused to calculate the volume information.

(D) In the above-described embodiment, the direction information during guidance is sensibly transmitted through the auditory sense of the driver by moving the sound image. However, the present invention is not limited to this. For example, the direction information is transmitted through vision. It is also possible. For example, a light emitting device (light emitting means) in which a plurality of LEDs are arranged on a line is arranged such that the LEDs are arranged on the dashboard on the upper part of the instrument panel as shown in FIG.
Of course, this light emitting device can be controlled by the control unit 10. Then, as shown in FIG. 5B, if the direction information in the guidance is the right direction, the control unit 10 turns on the LEDs sequentially from the center to the right. On the other hand, in the case of the leftward direction, as shown in FIG. 5C, the LEDs are sequentially illuminated leftward from the center. In this way, the driver can see the movement of the light at the end of the field of view, and thus can know the direction information during the guidance by the movement of the light.

In order to transmit the direction information to the driver, for example, one LED is provided on each of the left and right of the upper part of the instrument panel. The left LED of the user may blink. When indicating the forward direction, it is conceivable that an LED is also provided at the center and the LED at the center is made to blink. If it indicates the up and down direction, the light may be moved in the up and down direction and used together with the above described up and down movement of the sound image.

As for the light source, a light source other than the LED, such as an EL or a photodiode, may be used. And these light sources, including the LED,
In addition to the dashboard above the instrument panel, it may be installed at a position within the field of view of the driver during driving, such as inside the meter or on the windshield.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an overall configuration of a vehicle-mounted navigation device according to an embodiment.

FIG. 2A is a block diagram illustrating a speaker connected to an audio output device, and FIG. 2B is an explanatory diagram illustrating an arrangement of the speaker.

FIG. 3 is an explanatory diagram showing movement of a sound image in a vehicle cabin.

FIG. 4 is an explanatory diagram exemplifying a volume change in left and right speakers.

FIG. 5 is an explanatory diagram showing a configuration using a light emitting device.

FIG. 6 is an explanatory diagram showing a problem of the conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... In-vehicle navigation device 10 ... Control part 20 ... Position detector 21 ... Geomagnetic sensor 22 ... Gyroscope 23 ... Distance sensor 24 ... GPS receiver 30 ... Map data input device 40 ... Operation switch group 50 ... External memory 60 ... Display Device 70: Audio output device 80: Remote control sensor 80a: Remote control SP: Built-in speaker RS: Right speaker LS: Left speaker FS: Front speaker BS: Rear speaker US: Upper speaker GS: Lower speaker

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04S 1/00 H04S 7/00 F 9A001 7/00 A G10L 3/00 Q F term (Reference) 2C032 HB22 HC31 HD07 2F029 AA02 AB07 AB09 AC02 AC08 AC14 AC18 5D045 AB17 5D062 AA67 CC04 CC13 DD05 5H180 AA01 FF05 FF22 FF25 FF27 FF32 9A001 BB02 BB03 BB04 CC05 DD11 HH15 HH18 JJ12 JJ77 JZ11 KK56

Claims (13)

[Claims] 1. A navigation device that performs audio guidance at a predetermined timing according to a route to a destination, wherein at a timing at which the guidance can be emphasized, directional information indicating at least a left direction or a right direction included in the guidance is provided. A navigation device, comprising: a direction information transmitting unit that transmits a direction to a driver of the vehicle. 2. A navigation device for providing voice guidance at a predetermined timing according to a route to a destination, wherein at the timing of performing the guidance, sound volumes of a plurality of speaker devices are respectively changed to generate a sound image of the guidance voice. A navigation device, comprising: a direction information transmitting unit that, when moved, transmits direction information indicating at least a left direction or a right direction included in the guidance to the driver of the vehicle. 3. A navigation device that provides voice guidance at a predetermined timing according to a route to a destination, wherein at the timing of performing the guidance, sound volumes of a plurality of speaker devices are respectively changed to generate a sound image of the guidance voice. A navigation device, comprising: directional information transmission means for causing a driver of the vehicle to sensibly transmit direction information indicating at least a left direction or a right direction included in the guidance by moving the vehicle in the vehicle. 4. A navigation device that provides voice guidance at a predetermined timing according to a route to a destination, wherein before and after the guidance is performed, the volume of a plurality of loudspeaker devices is changed to produce a direction indication sound. A navigation device, comprising: a direction information transmitting unit that, by moving a sound image, at least transmits direction information indicating at least a left direction or a right direction included in the guidance to a driver of the vehicle. 5. A navigation device for providing voice guidance at a predetermined timing according to a route to a destination, wherein before and after the guidance is performed, sound volumes from a plurality of loudspeaker devices are respectively changed to provide a direction indication sound. A navigation system comprising: a direction information transmitting unit that, by moving a sound image in a vehicle, directionally transmits at least a left direction or a right direction included in the guidance to a driver of the vehicle. apparatus. 6. The navigation device according to claim 2, wherein the direction information transmitting means further changes the sound volume from each of the plurality of speaker devices before and after the timing of performing the guidance. A navigation device for transmitting the direction information to the driver of the vehicle by moving the sound image of the vehicle. 7. The navigation device according to claim 2, wherein the direction information transmitting means further changes the sound volume from each of the plurality of speaker devices before and after the timing of performing the guidance. A navigation apparatus characterized in that a sound image of the vehicle is moved in a vehicle so that the direction information is transmitted to a driver of the vehicle. 8. The navigation device according to claim 2, wherein the direction information transmitting means gradually changes the volume from the speaker device to move the sound image smoothly. Navigation device. 9. The navigation device according to claim 2, wherein at least two of the plurality of speaker devices are arranged on both sides of a headrest in a driver's seat. . 10. The navigation device according to claim 2, wherein the volume from the speaker device is calculated by the direction information transmitting means each time based on the direction information in the guidance. A navigation device characterized by the above-mentioned. 11. The navigation device according to claim 2, wherein the volume from the speaker device is stored in advance in accordance with the direction information in the guidance. 12. A navigation device that provides voice guidance at a predetermined timing according to a route to a destination, wherein the guidance is provided at the timing of performing the guidance or before or after the guidance and at a position that is within a visual field of a driver during driving. A navigation device, comprising: a direction information transmitting unit that transmits, to a driver of the vehicle, direction information indicating at least a left direction or a right direction included in the guidance by moving the direction indicating light. 13. The navigation device according to claim 2, wherein the direction information transmitting means further includes a driver's field of view while driving, at or before or after the guidance. The navigation device transmits the direction information to a driver of the vehicle by moving a direction indicating light at a position where the vehicle enters the navigation device.