JP4590679B2 - Navigation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle guidance technique in the case where a vehicle travels along a guide route to a destination, for example.
[0002]
[Prior art]
2. Description of the Related Art There is known a navigation device that detects a position by GPS or the like as a vehicle travels, calculates an appropriate route from a current location to a destination, and further performs voice guidance for the route. In such a navigation device, for example, when a vehicle approaches an intersection where a right / left turn is necessary, for example, it is common to perform guidance by voice a plurality of times.
[0003]
For example, it is determined that the distance to the intersection has become 700m, 300m, and 100m, and at each timing, "It is about 700m ahead, leftward", "About 300m away, leftward", "Soon left And so on.
[0004]
[Problems to be solved by the invention]
However, for drivers who are concentrating on driving, there is a possibility that they may miss the guidance described above, especially if the information is “left” or “right”. This results in a significant departure from the path.
[0005]
As a technique for solving this, there is one disclosed in Japanese Patent Laid-Open No. 7-103781. In this technology, a virtual sound source is provided on a route to a destination, and the virtual sound source is moved in a direction away from the vehicle on the route. In this case, since it is only necessary to drive to follow the virtual sound source, it is possible to prevent misunderstanding of information regarding the direction.
[0006]
However, this technique still has the following problems (1) to (3).
(1) When the distance between the vehicle and the virtual sound source becomes large, the driver is given anxiety that the virtual sound source preceding the vehicle has been left behind. Therefore, for example, as shown in FIG. 6A, when the distance between the intersections A and B is short, the virtual sound source is moving leftward at the intersection B, but the intersection A in front is turned left. A possibility arises.
[0007]
(2) The problem of giving anxiety shown in the above (1) has been pointed out in the description of the above publication, and 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, even if the virtual sound source moves in the left direction, for example, when there are a large number of lanes, the vehicle should turn to the left. May not be possible. As a result, a situation such as passing through a guidance intersection is caused.
[0008]
(3) In addition, the calculation processing for providing the virtual sound source on the route becomes complicated, resulting in a complicated apparatus configuration.
The present invention has been made in order to solve the above-described problems, and provides a navigation device that can be easily configured and that can appropriately transmit information on the direction in the guidance to the driver to realize appropriate route guidance. The purpose is to do.
[0009]
[Means for Solving the Problems and Effects of the Invention]
  The navigation device of the present invention provides voice guidance according to the route to the destination.Including in front of the guidance intersectionIt is performed at a predetermined timing. The predetermined timing is a timing at which a driving operation with a margin becomes possible. For example, guidance is performed at 700 m, 300 m, and 100 m before the guidance intersection.
[0010]
  And especially in this invention, a direction information transmission means isBefore the guidance intersectionDirection information included in the guidance is intuitively transmitted to the driver of the vehicle at the timing of performing the guidance. This is because if the transmission of the direction information is separated from the timing of the guidance in terms of time, the relation with the guidance becomes unclear. The direction information here includes at least information indicating the left direction and the right direction. For example, the guidance “soon to be left” at the guidance intersection includes direction information “left”. In addition, the guidance “There is a merge from the right” on an expressway or the like includes direction information “right direction”.
[0011]
  For example, as shown in claim 1, the transmission of the direction information is performed at the timing when the guidance is performed before the guidance intersection, based on the direction information indicating the left direction or the right direction included in the guidance. Sound imageAlong the vehicle width directionIt is conceivable to perform by moving in the left-right direction. The sound image of the guidance sound is moved by changing the sound volume from the plurality of speaker devices. For example, if the volume of speaker devices arranged on the left and right sides of the driver is changed and the guidance direction information indicates the left direction, the sound image of the guidance voice is moved to the left side of the driver, while the direction information is If it indicates the right direction, the sound image of the guidance voice is moved to the right side of the driver. In addition, it can be considered that the guidance of “forward direction” on the route is included in the guidance “more than 5 km is the road”.
[0012]
  Therefore, speaker devices may be arranged in front of and behind the driver, and the sound image of the guidance sound may be moved in the front and rear direction of the driver. The above-mentioned sound image movement is claimed2As shown in FIG.
  In this way, the driver can experience the direction information in the guidance through his / her hearing, and the information regarding “left direction” or “right direction” is not mistaken. In addition, since it is possible to surely know whether it is “leftward” or “rightward” at the timing of guidance (for example, 700 m ahead of the intersection), driving with a margin is realized.
[0013]
  As a result, it is possible to prevent the vehicle from making a turn in front of the guidance intersection or passing over the guidance intersection as in the conventional art. Thereby, appropriate route guidance is realized. Furthermore, since only the sound image is moved in the left-right or front-rear direction, the processing content as the direction transmission means becomes simple. That is, the configuration of the navigation device is not complicated.
When the direction information included in the guidance indicates the left direction, the sound images of the above-mentioned guidance sound are moved to the left by changing the volume from each of the plurality of speaker devices at the timing of performing the guidance. (Claim 3). In addition, when the direction information included in the guidance indicates the right direction, the sound image of the above-described guidance sound is moved to the right by changing the volume from each of the plurality of speaker devices at the timing of performing the guidance. (Claim 3). In addition, when the direction information included in the guidance indicates the forward direction, the sound image of the above-described guidance sound is moved in the front-rear direction by changing the volume from each of the plurality of speaker devices at the timing of performing the guidance. (Claim 4).
[0014]
  Note that it is not always necessary to move the sound image of the guidance voice. That is, as shown in claim 5, before and after the guidance intersection, the sound volume from the plurality of speaker devices is respectively determined based on the direction information indicating the left direction or the right direction included in the guidance. Change the direction image soundAlong the vehicle width directionYou may move to the left-right direction. Examples of the direction indication sound include a beep sound such as “pi, pi, pi, pi, pi”. Also in this case, it is sufficient to move the sound image in the passenger compartment as shown in claim 6. Even if it does in this way, it cannot be overemphasized that the same effect as the case where the sound image of guidance sound is moved is acquired.
[0015]
  Furthermore, it is desirable to move the sound image of the direction indication 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).7,8).
When the direction information included in the guidance indicates the left direction, the sound image of the above-mentioned direction indication sound is moved to the left by changing the sound volume from the plurality of speaker devices respectively before and after the timing of performing the guidance. (Claim 9). Further, when the direction information included in the guidance indicates the right direction, the sound image of the above-mentioned direction indication sound is moved to the right by changing the sound volume from the plurality of speaker devices respectively before and after the timing of performing the guidance. (Claim 9). Further, when the direction information included in the guidance indicates the forward direction, the sound image of the above-mentioned direction indication sound is moved in the front-rear direction by changing the sound volume from the plurality of speaker devices before and after the timing of performing the guidance. (Claim 10).
  By the way, when moving the sound image, the claim11As shown in the figure, it is preferable to gradually change the volume from the speaker device and move the sound image smoothly. For example, when the left direction is indicated, the sound image is smoothly moved from the center of the driver to the left side. In this way, since the movement of the sound image can be experienced, the driver can more easily experience the direction information.
[0016]
  The driver determines the movement of the sound image based on information from the left and right auditory organs. Therefore, considering the movement of the sound image in the left-right direction, 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 Ideally it should reach only the ear. Therefore, the claim12As shown in FIG. 5, it is conceivable to arrange at least two speaker devices on both sides of the headrest of the driver's seat. This increases the possibility that the direction information in the left-right direction can be more accurately transmitted to the driver.
[0017]
  In addition, the volume from each speaker device may be calculated by the direction information transmission means each time based on the direction information in the guidance.13). In this way, a conventional CD-ROM or DVD-ROM in which the guidance voice is recorded can be used as it is. On the other hand, it may be stored in advance according to the direction information in the guidance.14). For example, the volume from each speaker is stored in a CD-ROM or DVD-ROM together with the guidance voice. In this way, since it is not necessary to calculate the volume from each speaker, the configuration of the direction information transmission means is simplified, and the configuration of the navigation device can be further simplified.
[0018]
  The above has described the configuration for transmitting the direction information to the driver by moving the sound image, but the present invention is not limited to the movement of the sound image.intuitiveYou only need to be able to communicate to
  exampleIfThe direction indicating light may be moved at a position where it will enter the driver's field of view at the timing of performing the guidance or before or after the guidance. The movement of the direction indicating light can be realized by arranging, for example, LEDs and lighting the LEDs in order. Moreover, the position which will be in the driver | operator's visual field means the position which a driver | operator can see without moving a viewpoint. Therefore, as an example, it is conceivable to arrange the above-described LEDs on a dashboard. Of course, in addition to the movement of the sound image as described above, the movement of the direction indicating light may be performed.15).
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments to which the present invention is applied will be described below with reference to the drawings. Needless to say, 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.
[0020]
FIG. 1 is a block diagram showing the overall configuration of an in-vehicle navigation device 1 as an embodiment. The in-vehicle navigation device 1 is configured around a control unit 10, and a position detector 20, a map data input device 30, an operation switch group 40, an external memory 50, and a display device 60 connected to the control unit 10. The audio output device 70 and the 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, a bus line for connecting these configurations, and the like.
[0021]
The position detector 20 includes a well-known geomagnetic sensor 21, a gyroscope 22, a distance sensor 23, and a GPS receiver 24 for GPS (Global Positioning System) that detects the position of the vehicle based on radio waves from a satellite. Have.
Since these sensors 21 to 24 have errors of different properties, they are configured to be used while being interpolated by a plurality of sensors. Depending on the accuracy, a part of the above may be used, and further, a steering rotation sensor, a wheel sensor of each rolling wheel, or the like may be used.
[0022]
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 regarding routes. These data are input from a DVD-ROM as a recording medium. In this embodiment, a DVD-ROM is used, but other media such as a CD-ROM and a memory card may be used.
[0023]
Guidance data is stored for two channels, the R channel and the L channel, and guidance voices and direction indication sounds corresponding to the respective guidance voices are stored in the respective channels in the PCM method. This guidance voice is voice data such as “Soon to the right”, and the direction indication sound is beep sound data “Pi, Pi, Pi, Pi, Pi” for emphasizing the direction information included in the guidance voice. .
[0024]
Such guidance data is read by the control unit 10 at a predetermined timing and output to the voice output device 70 in the route guidance process.
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 provided speaker SP is attached to the periphery of the navigation screen and outputs an operation sound of the in-vehicle navigation device 1. On the other hand, as described above, the guidance voice input as digital data from the map data input device 30 and the corresponding direction indication sound are output from the right speaker RS and the left speaker LS. That is, the guidance voice and the direction indication sound based on the R channel data stored in the DVD-ROM are output from the right speaker RS, while the guidance voice and the direction indication sound based on the L channel data are output from the left channel. The The volume of these R channel and L channel is stored in advance in the DVD-ROM based on the direction information in the guidance.
[0025]
The right speaker RS and the left speaker LS are small speaker devices, and are disposed on both sides with respect to the headrest of the driver's seat. It is as shown in FIG. As a result, the sound from the right speaker RS mainly propagates to the driver's right ear, and the sound from the left speaker LS mainly propagates to the driver's left ear.
[0026]
The display device 60 is a color display using liquid crystal, CRT, or the like. Information is displayed from the in-vehicle navigation device 1 to the user via the display device 60.
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.
[0027]
The external memory 50 is a hard disk device for storing information necessary for executing various processes. However, since it is sufficient if information can be stored, for example, a semiconductor memory device other than the hard disk device may be used.
The remote control sensor 80 acquires user operation information via a remote control terminal (hereinafter referred to as “remote control”) 80a.
[0028]
With such a configuration, a so-called navigation function is realized. On the screen of the display device 60, the vehicle current location mark input from the position detector 20, the map data input from the map data input device 30, and additional data such as a guide route, name, and landmark displayed on the map are displayed. Can be displayed in a superimposed manner. In the in-vehicle navigation device 1, the remote control sensor 80 via the remote control 80 a, the operation switch group 40, the destination position, and the designation of a specific route such as a highway as necessary (that is, the passing point) When the designation is entered, the optimum route from the current location to the destination is automatically selected, and a so-called guide route is formed and displayed. As a method for automatically setting an optimal route, a method such as the Dijkstra method is known. And after this guidance route is formed and displayed, the above-mentioned guidance voice and direction indication sound, mainly route guidance, are output by the control unit 10 via the voice output device 70 in accordance with the traveling state of the vehicle. .
[0029]
Since the in-vehicle navigation device 1 of the present embodiment is characterized by the output of the guidance voice and the direction indication sound, this will be described below.
As described above, the volume information of the R / L channel of the guidance voice and the direction indication sound is stored in the DVD-ROM. The volume information is stored so that the sound images of the guidance voice and the direction indication sound are moved in the right direction or the left direction in accordance with the direction information in the guidance.
[0030]
For example, guidance information such as “approx. 700m ahead, right direction”, “approx. 300m ahead, right direction”, “soon, right direction”, “there is a merge from the right” direction information “right direction” Therefore, the volume information is stored so that the volume of the R channel is increased and the volume of the L channel is decreased during the utterance period of the guidance voice. In this embodiment, the volume is linearly increased / decreased. In this case, the volume of the R channel increases linearly from VB to VH within the output period as shown in FIG. 4A. Thus, the volume of the L channel decreases linearly from VB to VL within the output period as shown in FIG. Therefore, when this 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 volume changes as shown in FIG. 4, the sound image smoothly moves from the center of the driver to the right side during the utterance period. FIG. 3 shows a schematic diagram of the passenger compartment. For example, the sound image moves smoothly from point Y to point Z during the sound output period.
[0031]
On the other hand, the direction information “left direction” is included in the guidance “About 700m ahead, left direction”, “About 300m ahead, left direction”, “Soon, left direction”, “There is a merge from the left”. Therefore, the volume information is stored so that the volume of the L channel is increased and the volume of the R channel is decreased during the utterance period of the guidance voice. In this case, contrary to the above example, the change in volume of the L channel is as shown in FIG. 4 (a), and the change in volume of the R channel is as shown in FIG. 4 (b). 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 to the right side of the driver during the utterance period. If it says in FIG. 3, it will move smoothly from the point Y to the point X during the audio | voice output period.
[0032]
In the example described above with reference to FIG. 4, the volume is changed at a constant rate during the audio output period, but the left and right are set to the same volume until the middle of the output period, and the volume is changed from the middle of the output period. You may let them. In this way, “about 300m ahead” and “coming soon” in the guidance voice “about 300m ahead” will be heard from the center and “right” part Can only be heard from the right side as it approaches the end. In the above-described example, the volume is changed linearly, but it may be increased or decreased stepwise. In that case, the movement of the sound image is also stepped.
[0033]
Further, in the above-described example, the left and right sound volumes are the same at the output start time, and the sound image is moved from the center to the right side or the left side. On the other hand, the volume information of the R / L channel is changed from the example of FIGS. 4A and 4B, and the sound image is moved from the left side to the right side of the driver when the right direction is emphasized. Conversely, the sound image may be moved from the right side to the left side of the driver when the left direction is emphasized.
[0034]
Direction indication sounds (beep sounds, etc.) are output in the order of “pi, pi, pi, pi, pi” after the guidance voice. The volume information similar to the guidance voice described above is also stored for the output period of the direction indication sound. That is, if there is direction information in the right direction in 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 direction information in the left direction in the guidance, the volume information is stored so that the volume of the L channel is increased and the volume of the R channel is decreased.
[0035]
Therefore, this direction indication sound also sounds like moving to the right or left side of the driver during the output period.
Note that the volume change may be changed from the middle of the output period as in the case of the guidance voice, or may be changed stepwise.
[0036]
According to such an in-vehicle navigation device 1, the driver can experience the direction information in the guidance through hearing even if the content indicating the direction of the output guidance voice itself cannot be heard (recognized) ( In other words, it is possible to know intuitively and intuitively), and there is no mistake in the information of “leftward” or “rightward”. Moreover, since the guidance voice and direction indication sound of different contents are moved step by step from the front of the guidance intersection, the direction to bend reliably can be determined throughout the period from the front of the guidance intersection to just before turning. Driving with a margin is realized. Further, there are many cases in which the content of the guidance voice cannot be heard in an in-vehicle environment with a lot of noise during traveling, but the direction information of the guidance voice can be reliably read even in such a situation.
[0037]
The movement of the sound image described above is performed in the vehicle compartment, unlike the case where the virtual sound source set in front of the vehicle is moved along the course as in the technique disclosed in Japanese Patent Laid-Open No. 7-103781 described above. In addition, since the guidance voice is changed in stages as it approaches the intersection from before the guidance intersection to bend, the route guidance can always be efficiently performed. As a result, it is possible to prevent the vehicle from making a turn before the guidance intersection or passing over the guidance intersection as in the conventional case.
[0038]
In the present embodiment, the volume information for moving the sound image is stored in advance in the DVD-ROM, so that the control unit 10 does not require a calculation process for moving the sound image. This greatly simplifies the configuration of the in-vehicle navigation device 1.
[0039]
Furthermore, in this embodiment, as shown in FIG. 4, the volume change by the volume information is performed linearly. As a result, the sound image of the guidance voice and the direction indication sound moves smoothly and the movement of the sound image can be experienced, so that the driver can easily experience the direction information.
[0040]
In addition, the driver determines the movement of the sound image based on information from the left and right auditory organs. Therefore, considering the movement of the sound image in the left-right direction, 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 Ideally it should reach only the ear. Therefore, in this embodiment, the right speaker RS and the left speaker LS are arranged on both sides of the headrest. Thereby, direction information can be more accurately transmitted to the driver.
[0041]
In this case, if the right speaker RS and the left speaker LS are arranged on both sides of the rod-shaped stay and the stay is detachable from the headrest stay, the apparatus can be easily installed at any time on the vehicle. Can be used. Of course, it may be embedded on the left and right sides of the headrest and on both sides of the seat surface. This is advantageous in that the appearance is improved.
[0042]
In addition, the control part 10, the audio | voice output apparatus 70, the right speaker RS, and the left speaker LS in a present Example correspond to a "direction information transmission means."
[Others]
(A) The above embodiment is configured to output the guidance voice and the subsequent direction indication sound 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 indication sound without moving the sound image of the guidance sound.
[0043]
In the above embodiment, the sound image is moved by changing the sound volume of the right speaker RS and the left speaker LS during the output period. The subsequent direction indication sound may be output from the right speaker RS, and the guidance voice including the left direction information and the subsequent direction indication 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 direction information is lower than that in the case of moving the sound image.
[0044]
(B) In the above embodiment, the volume information is stored in advance in a DVD-ROM in which guidance voices and direction indication sounds are stored. On the other hand, the control unit 10 calculates volume information that matches the guidance, and the voice output device 70 outputs the guidance voice and the direction indication sound based on the volume information calculated by the control unit 10. Good. 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. In this way, although the configuration of the control unit 10 is complicated as compared with the above embodiment, it is advantageous in that a medium such as a DVD-ROM that has been used conventionally can be used as it is. Further, since the control unit 10 only calculates left and right volume information, as compared with the case of calculating information such as volume according to the virtual sound source position on the route as in the device described in the above-mentioned publication, Even with such a configuration, the control unit 10 is sufficiently simple.
[0045]
(C) In the above embodiment, the sound image is moved to the left and right in two channels. However, the number of channels may be three or more. For example, in the case of four channels, it is conceivable that the front speaker FS and the rear speaker BS are provided as shown by the broken line in FIG. At this time, speakers FS and BS are arranged before and after the driver. For example, the front speaker FS is disposed above the steering boss and the rear speaker BS is disposed behind the rear seat. In this way, it is possible to respond to the guidance of “5 km or more, the road”. That is, since it is considered that this guidance includes direction information “forward” on the route, the sound image of the guidance voice is moved from the rear to the front of the driver in the passenger compartment.
[0046]
Further, in the case of 6 channels, as shown by a broken line in FIG. 2A, it may be considered that the upper speaker US and the lower speaker GS are provided. At this time, speakers US and GS are arranged above and below the driver. For example, the upper speaker US is arranged on the ceiling, sun visor, etc., and the lower speaker GS is arranged on the floor mat or the like under the seat. In this way, it is possible to respond to the guidance “It is an XX exit”. That is, since it is considered that the direction information “downward” on the route is included in this guidance, the sound image of the guidance voice is moved from the upper side to the lower side of the driver. Of course, it is also possible to cope with the guidance “Ox Inter entrance” by moving the sound image of the guidance voice from below to above.
[0047]
Note that the upper and lower speakers US and GS may not be used only in the case of 6 channels. The upper and lower speakers may be used in combination with the left and right speakers LS and RS, or in combination with the front and rear speakers FS and BS. Even US and BS can be used. Further, as in the above-described embodiment, a direction indication sound in which the sound image or the light source moves in the vertical direction can be used. These direction indication sounds and the upper and lower speakers US, GS can be used in combination.
[0048]
Volume information of the guidance voice and direction indication sound channels (U / G channel) related to the up and down direction described above is stored in the DVD-ROM, but as described in (b) above, the control unit 10 may be configured to calculate volume information.
[0049]
(D) In the above embodiment, the direction information in the guidance is 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 may be transmitted through vision. It is done. For example, a light emitting device (light emitting means) in which a plurality of LEDs are arranged on a line is arranged on the dashboard on the upper panel of the instrument panel as shown in FIG. Of course, the light emitting device can be controlled by the control unit 10. And as shown in FIG.5 (b), if the direction information in guidance is right direction, the control part 10 will light LED in the right direction in order from a center. On the other hand, in the left direction, as shown in FIG. 5C, the LEDs are lit in the left direction sequentially from the center. In this way, the driver can see the movement of the light at the end of the field of view, so that the direction information in the guidance can be known by the movement of the light.
[0050]
Since it is only necessary 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. If the right direction, the right LED of the driver blinks, and if the left direction, the left side of the driver The LED may be blinked. In the case of indicating the forward direction, it is conceivable to provide an LED at the center and blink the LED at the center. If the vertical direction is indicated, the light can be moved in the vertical direction and used in combination with the above-described vertical movement of the sound image.
[0051]
As for the light source, a light source other than the LED, such as an EL or a photodiode, may be used. Then, these light sources including the LED may be installed at a position within the field of view of the driver during driving, such as in the meter or on the windshield, in addition to the dashboard on the top of the instrument panel.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating an overall configuration of an in-vehicle navigation device according to an embodiment.
FIG. 2A is a block diagram illustrating a speaker connected to the audio output device, and FIG. 2B is an explanatory diagram illustrating an arrangement of the speaker.
FIG. 3 is an explanatory diagram for illustrating movement of a sound image in a vehicle interior.
FIG. 4 is an explanatory diagram illustrating volume change in left and right speakers.
FIG. 5 is an explanatory diagram illustrating a configuration using a light emitting device.
FIG. 6 is an explanatory diagram for illustrating a problem of a conventional device.
[Explanation of symbols]
1. Car navigation system
DESCRIPTION OF SYMBOLS 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 ... Equipped speaker
RS ... right speaker LS ... left speaker
FS ... Front speaker BS ... Rear speaker
US: Upper speaker GS: Lower speaker

Claims (15)

In a navigation device that performs voice guidance at a predetermined timing including before the guidance intersection according to the route to the destination,
Based on the direction information indicating the left direction or the right direction included in the guidance at the timing when the guidance is performed before the guidance intersection, the sound image of the guidance sound is changed in the vehicle width direction by changing the volume from each of the plurality of speaker devices. A navigation device comprising a direction information transmission means for intuitively transmitting the direction information indicating the left direction or the right direction included in the guidance to the driver of the vehicle by moving in the left-right direction along . In a navigation device that performs voice guidance at a predetermined timing including before the guidance intersection according to the route to the destination,
Based on the direction information indicating the left direction or the right direction included in the guidance at the timing when the guidance is performed before the guidance intersection, the sound image of the guidance sound is changed in the vehicle by changing the volume from each of the plurality of speaker devices. Directional information transmission means for intuitively transmitting direction information indicating the left direction or the right direction included in the guidance to the driver of the vehicle by moving in the left-right direction along the vehicle width direction. A navigation device. The navigation device according to claim 1 or 2,
When the direction information included in the guidance indicates the left direction, the direction information transmission means changes the sound volume from the plurality of speaker devices at the timing of performing the guidance, and converts the sound image of the guidance sound to the left. When the direction information included in the guidance indicates the right direction, the sound volume of the guidance sound is changed to the right by changing the volume from the plurality of speaker devices at the timing of performing the guidance. A navigation device characterized by moving in a direction. In a navigation device that performs voice guidance at a predetermined timing according to the route to the destination,
By changing the sound volume from a plurality of speaker devices at the timing of performing the guidance and moving the sound image of the guidance sound, direction information indicating at least the left direction or the right direction included in the guidance is obtained. It is equipped with direction information transmission means that communicates intuitively to the driver,
When the direction information included in the guidance indicates a forward direction, the direction information transmission means changes the sound volume from a plurality of speaker devices at the timing of performing the guidance, and changes the sound image of the guidance sound. A navigation device characterized by moving in a direction. In a navigation device that performs voice guidance at a predetermined timing including before the guidance intersection according to the route to the destination,
Before or after the timing of performing the guidance before the guidance intersection, based on the left or the direction information indicating a right contained in the guidance, the vehicle sound image direction indicating sound by changing the volume of the plurality of speaker devices respectively It is characterized by comprising direction information transmission means for intuitively transmitting the direction information indicating the left direction or the right direction included in the guidance to the driver of the vehicle by moving left and right along the width direction. Navigation device. In a navigation device that performs voice guidance at a predetermined timing including before the guidance intersection according to the route to the destination,
A sound image of a direction indication sound is obtained by changing the sound volume from a plurality of speaker devices based on the direction information indicating the left direction or the right direction included in the guidance before and after the timing of performing the guidance before the guidance intersection. A direction information transmission means for intuitively transmitting the direction information indicating the left direction or the right direction included in the guidance to the driver of the vehicle by moving the vehicle in the horizontal direction along the vehicle width direction. A navigation device characterized by the above. In the navigation apparatus in any one of Claims 1-4,
The direction information transmitting means further moves the sound image of the direction indication sound by changing the sound volume from a plurality of speaker devices respectively before and after the timing of performing the guidance, thereby moving the direction information to the driver of the vehicle. A navigation device characterized by intuitive transmission to the user. In the navigation apparatus in any one of Claims 1-4,
The direction information transmission means further moves the sound image of the direction indication sound in the vehicle by changing the sound volume from a plurality of speaker devices respectively before and after the timing of performing the guidance, thereby moving the direction information to the vehicle. A navigation device that conveys information intuitively to the driver. The navigation device according to any one of claims 5 to 8,
When the direction information included in the guidance indicates the left direction, the direction information transmission means changes the sound volume from a plurality of speaker devices respectively before and after the timing of performing the guidance, and changes the direction indication sound. When the sound image is moved in the left direction and the direction information included in the guidance indicates the right direction, the direction from the timing of performing the guidance is changed, and the volume from the plurality of speaker devices is changed to the direction. A navigation device characterized by moving a sound image of an instruction sound to the right. In a navigation device that performs voice guidance at a predetermined timing according to the route to the destination,
Direction information indicating at least the left direction or the right direction included in the guidance by moving the sound image of the direction indication sound by changing the sound volume from the plurality of speaker devices respectively before and after the timing of performing the guidance, It is equipped with direction information transmission means for intuitive transmission to the vehicle driver,
When the direction information included in the guidance indicates a forward direction, the direction information transmission means changes the sound volume from a plurality of speaker devices respectively before and after the timing of performing the guidance, and changes the direction indication sound. A navigation device characterized by moving a sound image in the front-rear direction. In the navigation apparatus in any one of Claims 1-10,
The navigation apparatus characterized in that the direction information transmission means gradually changes the sound volume from the speaker device and moves the sound image smoothly. The navigation device according to any one of claims 1 to 11,
A navigation device, wherein at least two speaker devices of the plurality of speaker devices are arranged on both sides of a headrest of a driver's seat. The navigation device according to any one of claims 1 to 12,
The volume of sound from the speaker device is calculated by the direction information transmission means each time based on the direction information in the guidance. The navigation device according to any one of claims 1 to 13,
The volume from the said speaker apparatus is memorize | stored previously according to the direction information in the said guidance. The navigation apparatus characterized by the above-mentioned. The navigation device according to any one of claims 1 to 14,
The direction information transmission means further moves the direction indication light at a position that falls within the field of view of the driving driver at the timing when the guidance is performed or before or after the guidance, thereby transmitting the direction information to the vehicle. A navigation device characterized in that it is transmitted to the driver.

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