JP6020415B2 - Vehicle horn control device, horn sound reduction control system - Google Patents

Description

  The present invention relates to a vehicle horn control device that controls a horn mounted on a vehicle, and a horn sound reduction control system including the vehicle horn control device.

  A technique described in Patent Document 1 is known as a technique for notifying a warning partner to be warned that a warning sound has been output while reducing noise to the surroundings. In Patent Document 1, if communication with a warning partner is possible, a warning signal is transmitted wirelessly without sounding a horn, that is, a horn.

JP 2008-114649 A

  However, in the technique of Patent Document 1, when communication with a warning partner is not possible, even if the area is an area where noise should be suppressed, the horn is sounded as usual. Therefore, the noise suppression effect in the area where noise should be suppressed is not sufficient.

  The present invention has been made based on this situation, and an object thereof is to provide a vehicle horn control device and a horn sound reduction control system that have a high noise suppression effect in an area where noise should be suppressed. There is.

  The above object is achieved by a combination of the features described in the independent claims, and the subclaims define further advantageous embodiments of the invention.

  A first invention according to a vehicle horn control device for achieving the above object is used in a vehicle equipped with a horn (43), and the position of the vehicle is within a sound reduction area where the volume output from the horn should be reduced. The sound reduction determination unit (301) that determines whether or not the sound is sounded and the sound reduction determination unit determine that the position of the vehicle is within the sound reduction area, the user performs an operation to sound the horn. And a volume control unit (302) for reducing the volume output from the horn when the vehicle position is determined to be outside the sound reduction area.

  According to the present invention, the volume output from the horn can be reduced if it can be determined that the position of the vehicle is within the sound reduction area regardless of whether or not communication with the vehicle to be warned is possible. Therefore, by setting an area where noise should be suppressed as a sound reduction area, a high noise suppression effect can be obtained in that area.

  Moreover, 1st invention which concerns on the horn sound reduction control system for achieving the said objective and vehicle horn control apparatus (3) used with the vehicle provided with the horn (43), and the position of a vehicle are from horn. The facility-side wireless transmission device (22) that transmits the sound-reduction area information for determining whether the sound volume to be output is within the sound-reduction area, and the facility-side wireless transmission device transmit the sound-reduction area information. The vehicle horn control device includes a facility-side control unit (21), and the vehicle horn control device receives the sound reduction area information from the facility-side wireless transmission device, and the sound reduction area received by the vehicle-mounted wireless reception unit. Based on the information, the sound reduction determination unit (301) for determining whether or not the position of the vehicle is within the sound reduction area, and the sound reduction determination unit have determined that the position of the vehicle is within the sound reduction area. Based on the operation of ringing the horn There the volume to be output from the horn when performed by the user, the position of the vehicle; and a volume control unit for reducing (302) than if it is determined that the outside sound reduction area.

  According to this invention, the sound reduction determination unit of the vehicle horn control device determines whether or not the position of the vehicle is within the sound reduction area based on the sound reduction area information received by the in-vehicle wireless reception unit. The vehicle horn control device does not need to have information for specifying the sound reduction area.

  Also in the present invention, the volume output from the horn can be reduced if it can be determined that the position of the vehicle is within the sound reduction area, regardless of whether or not communication with the vehicle to be warned is possible. Therefore, a high noise suppression effect can be obtained in the area by transmitting the sound reduction area information in which the area where the noise should be suppressed is the sound reduction area.

  A second aspect of the vehicle horn control device for achieving the above object is a vehicle horn control device used in the first aspect of the horn sound reduction control system.

  A second invention relating to a horn sound reduction control system for achieving the above object is used in a first vehicle provided with a horn (43), and the position of the first vehicle reduces the volume output from the horn. The sound reduction determination unit (301, S1) that determines whether or not the sound reduction area should be determined and the sound reduction determination unit determine that the position of the first vehicle is within the sound reduction area. Then, the volume control unit (302, S2,...) That reduces the volume output from the horn when the operation of ringing the horn is performed by the user is smaller than when it is determined that the position of the first vehicle is outside the sound reduction area. When the S3), the inter-vehicle communication unit (31), and the volume control unit reduce the volume and output the sound of the horn, the inter-vehicle communication unit outputs a horn operation signal indicating that the horn is operated. A transmission control unit (303, S4) for transmission; Used between the transmission vehicle side device (3a) provided and the second vehicle different from the first vehicle, and receives the horn operation signal transmitted from the inter-vehicle communication unit (31) of the transmission vehicle side device. Receiving vehicle side including a communication unit (31) and a speaker control unit (304, S11, S12) for outputting a warning sound from a speaker (44) in the vehicle when the inter-vehicle communication unit receives a horn operation signal. A horn sound reduction control system comprising a device (3b).

  Also in this invention, regardless of whether or not the transmission vehicle side device can communicate with the vehicle to be warned, if the position of the first vehicle can be determined to be within the sound reduction area, the transmission vehicle side device reduces the volume output from the horn. Can do. Therefore, by setting an area where noise should be suppressed as a sound reduction area, a high noise suppression effect can be obtained in that area.

  In addition, the transmitting vehicle side device transmits a horn operation signal indicating that an operation of ringing the horn has been performed from the inter-vehicle communication unit, and the receiving vehicle side device receives a horn operation signal and receives a speaker in the vehicle. Output a warning sound. Therefore, even if the volume of the sound produced by the horn of the first vehicle using the transmitting vehicle side device is low, the driver of the second vehicle using the receiving vehicle side device is the driver of the first vehicle. It can be recognized that the operation to sound is performed.

  A third aspect of the vehicle horn control device for achieving the above object is a vehicle horn control device comprising the transmission vehicle side device and the reception vehicle side device according to the second aspect of the horn sound reduction control system. It is.

  In addition, the code | symbol in the parenthesis described in the claim shows the correspondence with the specific means as described in embodiment mentioned later as one aspect, Comprising: The technical scope of this invention is limited is not.

It is a lineblock diagram of horn sound reduction control system 1 of an embodiment. It is a block diagram which shows the vehicle-mounted horn control apparatus 3 and the vehicle-mounted apparatus relevant to the vehicle horn control apparatus 3. FIG. It is a process which the control apparatus 30 of the vehicle horn control apparatus 3 performs, Comprising: It is a flowchart which shows a process in case the vehicle C turns into a signal transmission vehicle CTV. It is a flowchart which shows the process when the control apparatus 30 of the horn control apparatus 3 for vehicles performs, Comprising: The vehicle C becomes the signal receiving vehicle CRV.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the horn sound reduction control system 1 of this embodiment includes a facility-side system 2 and a vehicle horn control device 3. The vehicle horn control device 3 has functions of both the transmitting vehicle side device 3a and the receiving vehicle side device 3b.

<Configuration of facility side system 2>
The facility-side system 2 includes a facility-side control unit 21 and an access point 22 corresponding to the facility-side wireless transmission device in the claims.

  In this embodiment, the access point 22 transmits radio waves to the surroundings with a frequency and a communication method according to the communication standard for vehicle-to-vehicle communication. For example, 700 MHz band, 5.8 GHz band, 5.9 GHz, etc. are used as the frequency. The communication method is a broadcast communication method. In addition, the transmission power is set so that the range in which communication is possible with the inter-vehicle communication unit 31 included in the vehicle horn control device 3 is about several hundred meters.

  In the present embodiment, the communicable range between the access point 22 and the inter-vehicle communication unit 31 is a communicable range and a sound reduction area. Therefore, the access point 22 is installed in the sound reduction area.

  The sound reduction area may be an area where the volume output from the horn 43 of the vehicle C should be reduced, and various places can be set as the sound reduction area. In the example of FIG. 1, a sound reduction area (not shown) is set around a hospital 4 which is an example of a facility. Other possible sound reduction areas include residential areas and school areas.

  There is no particular restriction on the size of the sound reduction area. When the sound reduction area is wider than the communication range defined in the vehicle-to-vehicle communication standard, access points 22 are installed at a plurality of positions within the sound reduction area, Communication range of the access point 22.

  Further, the transmission power of the access point 22 may be increased to widen the communicable range of one access point 22. On the contrary, the transmission power of the access point 22 may be reduced, and the width of the sound reduction area may be narrower than the communication range of general vehicle-to-vehicle communication.

  The facility-side control unit 21 is a computer including a CPU, a ROM, a RAM, and the like, and is connected to the access point 22. The facility-side control unit 21 controls the access point 22 to transmit sound reduction area information from the access point 22.

  The sound reduction area information is information that allows the vehicle horn control device 3 that has received the sound reduction area information to determine whether or not the current position of the vehicle is a sound reduction area. In the present embodiment, the entire communicable range of the access point 22 is the sound reduction area, and since the radio wave from the access point 22 can be received, the vehicle horn control device 3 has the current position as the sound reduction area. Judgment can be made. Therefore, the sound reduction area information only needs to include information that indicates that the type of information is sound reduction area information.

  In this embodiment, there are two types of sound reduction areas. One is a constant sound reduction area where the volume output from the horn 43 needs to be reduced regardless of the time zone. The other is a time zone limited sound reduction area where a sound reduction time zone in which the volume output from the horn 43 should be reduced is limited.

  The facility-side control unit 21 that controls the access point 22 that is always installed in the sound reduction area causes the sound reduction area information to be transmitted from the access point 22 at a predetermined period regardless of the time zone. The predetermined period is, for example, several seconds or less.

  The facility side control unit 21 that controls the access point 22 installed in the time zone limited sound reduction area stores the above sound reduction time zone in advance, and the sound reduction is performed at a predetermined cycle only in the sound reduction time zone. The area information is transmitted from the access point 22. The predetermined cycle is the same as the transmission cycle of the access point 22 installed in the always sound reduction area.

<Configuration of vehicle horn control device 3>
As shown in FIG. 2, the vehicle horn control device 3 includes a control device 30 and an inter-vehicle communication unit 31. The control device 30 and the inter-vehicle communication unit 31 are mounted on the vehicle C.

  The inter-vehicle communication unit 31 is a communication unit that performs communication (that is, transmission and reception) with a frequency and a communication method according to a communication standard for inter-vehicle communication, and includes an inter-vehicle reception unit 31a and an inter-vehicle transmission unit 31b.

  The communication frequency is the same frequency as the access point 22, and the inter-vehicle receiver 31 a can receive the sound reduction area information transmitted by the access point 22. Therefore, the inter-vehicle receiver 31a functions as an in-vehicle wireless receiver according to the claims.

  The control device 30 is connected to a horn operation unit 41, a horn control unit 42, an output sound generation unit 44, and a display unit 46 which are on-vehicle devices different from the vehicle horn control device 3. Although an in-vehicle device different from the control device 30 and the vehicle horn control device 3 is also shown in FIG. 1, the horn operation unit 41 and the output sound generation unit 44 are omitted in FIG. 1 for convenience of illustration.

  The horn operation part 41 is a part that is operated by the driver when the horn 43 is desired to be sounded, and is arranged at the center part of the steering wheel. When the horn operation unit 41 is pressed, a signal indicating that is input to the horn control unit 42 and the control device 30.

  The horn control unit 42 has a function of turning on and off the power to the horn 43 in order to output a warning sound from the horn 43, and turns on the power to the horn 43 while the horn operation unit 41 is being pressed. To do. Also, it has a function of adjusting the magnitude of the current flowing to the horn 43. The horn control unit 42 is also connected to the control device 30. When the sound reduction instruction signal input from the control device 30 is not input, the horn control unit 42 is connected to the horn 43 while the horn operation unit 41 is being pressed. The current to be energized is a first predetermined value. When the sound reduction instruction signal is input, the current supplied to the horn 43 while the horn operation unit 41 is being pressed is set to a second predetermined value that is smaller than the first predetermined value.

  The horn 43 is an electronic horn, and the volume changes depending on the amount of current. Therefore, the volume is smaller when the second predetermined value of current is supplied than when the first predetermined value of current is supplied. The second predetermined value can be set as appropriate. For example, the second predetermined value is set so that the volume when the second predetermined value is energized is 1/3 to 1/2 of the volume when the first predetermined value is energized.

  The output sound generation unit 44 includes a DA conversion unit and an amplifier. The output sound generation unit 44 converts an input digital signal into an analog signal, amplifies the signal, and outputs the analog signal to the speaker 45. The speaker 45 is for outputting sound into the vehicle interior, receives the analog signal generated by the output sound generation unit 44, converts this analog signal into sound, and outputs it to the vehicle interior. The display unit 46 is installed at a position where the driver can visually recognize the vehicle C.

  The control device 30 is a computer including a CPU, a ROM, a RAM, and the like, and the CPU executes a program stored in the ROM while using a temporary storage function of the RAM. By executing the program, the control device 30 functions as a sound reduction determination unit 301, a volume control unit 302, a transmission control unit 303, a speaker control unit 304, and a display control unit 305.

  The sound reduction determination unit 301 determines whether or not the current position of the vehicle C on which the vehicle horn control device 3 is mounted is within the sound reduction area. In the present embodiment, the sound reduction determination unit 301 determines whether or not the inter-vehicle reception unit 31a has received the sound reduction area information transmitted by the access point 22. When the inter-vehicle receiver 31a receives the sound reduction area information, it determines that the current position is within the sound reduction area, and the inter-vehicle receiver 31a does not receive the sound reduction area information for a certain time or more. , It is determined that the current position is not within the sound reduction area. This determination is repeatedly executed at a constant cycle.

  If the sound reduction determination unit 301 determines that the current position of the vehicle is within the sound reduction area when the horn operation unit 41 is operated, the volume control unit 302 instructs the horn control unit 42 to reduce the sound. Output a signal. Thereby, the horn control unit 42 sets the current to be supplied to the horn 43 to the second predetermined value, so that the horn 43 outputs a sound whose volume is smaller than the sound output outside the sound reduction area.

  The transmission control unit 303 indicates that when the volume control unit 302 decreases the volume and outputs a sound from the horn 43, the operation of sounding the horn 43 is performed from the inter-vehicle transmission unit 31b of the inter-vehicle communication unit 31. The horn operation signal is transmitted by the broadcast transmission method.

  FIG. 1 shows the vehicle C that has transmitted the horn operation signal as a signal transmission vehicle CTV. The signal transmission vehicle CTV corresponds to the first vehicle of the claims.

  If another vehicle C equipped with the vehicle horn control device 3 is present in a range that can communicate with the signal transmission vehicle CTV, the inter-vehicle communication unit 31 installed in the other vehicle C transmits a signal transmission. The horn operation signal transmitted by the vehicle CTV is received. The vehicle C that has received the horn operation signal is hereinafter referred to as a signal receiving vehicle CRV. The signal receiving vehicle corresponds to the second vehicle in the claims.

  In the signal receiving vehicle CRV, a warning sound is output from the speaker 45 by the speaker control unit 304. That is, the speaker control unit 304 outputs a digital signal indicating a warning sound to be output from the speaker 45 to the output sound generation unit 44 when the inter-vehicle communication unit 31 receives a horn operation signal. When this digital signal is input to the output sound generator 44, a warning sound is output from the speaker 45.

  In the present embodiment, this warning sound is one kind of predetermined warning sound. The warning sound is different from the sound output from the horn 43 in at least one of the pitch and tone color.

  The display control unit 305 causes the display unit 46 to display a display indicating that the sound reduction determination unit 301 has determined that the current position is within the sound reduction area. The display unit 46 used for this purpose may be only a lamp such as a single LED. In this case, whether the sound is within the sound reduction area is displayed by switching on and off. Moreover, when using the display part which can display a figure other than a character and a character as the display part 46, you may display that it is in a sound reduction area with a character or a figure. Moreover, you may show that it is in a sound reduction area by showing the control performed within a sound reduction area, such as during sound reduction.

  Further, the display control unit 305 may display the degree of sound reduction, for example, 1/2 sound reduction, in addition to displaying on the display unit 46 that the sound is within the sound reduction area. Moreover, you may display the volume of the result of having reduced the sound with a number and a graph.

<Processing flow of control device 30>
3 and 4 are flowcharts showing processing executed by the control device 30. FIG. 3 shows processing when the vehicle C on which the vehicle horn control device 3 is mounted becomes the signal transmission vehicle CTV. FIG. 4 shows processing when the vehicle C on which the vehicle horn control device 3 is mounted becomes the signal receiving vehicle CRV. It demonstrates from FIG.

  The process of FIG. 3 is started by detecting that the horn operation unit 41 is operated. Step S1 is a process performed by the sound reduction determination unit 301, and determines whether or not the current position is within the sound reduction area. If the result of this determination is No, the process proceeds to step S2, and if Yes, the process proceeds to step S3. These steps S2 and S3 are processes performed by the volume control unit 302.

  In step S2, it is determined that the volume output by the horn 43 may be a normal volume, and the process of FIG. 3 is terminated without outputting a sound reduction instruction signal. In this case, the horn control unit 42 supplies a current having a first predetermined value to the horn 43. The volume when the first predetermined value of current is energized is the normal volume.

  On the other hand, when it is determined that the sound is within the sound reduction area (S1: Yes), a sound reduction instruction signal is output to the horn control unit 42 in step S3. When the horn control unit 42 acquires the sound reduction instruction signal, the horn 43 supplies a current of a second predetermined value to the horn 43, so that a sound having a volume smaller than the normal volume is output from the horn 43.

  The subsequent step S4 is a process executed by the transmission control unit 303, and broadcasts a horn operation signal from the inter-vehicle communication unit 31.

  Next, FIG. 4 will be described. The process of FIG. 4 is a process performed by the speaker control unit 304 and is repeatedly executed at a constant cycle.

  In step S11, it is determined whether a horn operation signal has been received. If the result of this determination is No, the process of FIG. 4 is terminated, and if Yes, the process proceeds to step S12.

  In step S <b> 12, in order to output a warning sound from the speaker 45, a digital signal indicating the warning sound is output to the output sound generation unit 44. Thereby, a warning sound is output from the speaker 45.

<Effect of embodiment>
As described above, according to the present embodiment described above, when the sound reduction determination unit 301 (S1) determines that the current position is within the sound reduction area, the volume control unit 302 (S3) outputs the volume output from the horn 43. Is made smaller than when it is determined that it is outside the sound reduction area. Regardless of whether or not communication with the vehicle to be warned is possible, if it can be determined that the current position is within the sound reduction area, the volume output from the horn 43 is reduced, so the area where noise should be suppressed is set as the sound reduction area. By doing so, a high noise suppression effect can be obtained in the area.

  Further, according to the present embodiment, the sound reduction determination unit 301 determines whether or not the sound reduction area is within the sound reduction area, depending on whether or not the vehicle-to-vehicle communication unit 31 has received the sound reduction area information transmitted by the access point 22. Deciding. Therefore, it is not necessary to have map information for specifying the sound reduction area in the vehicle C, and it is not necessary to acquire the current position. Therefore, it is possible to determine whether or not the sound reduction area is within a simple configuration.

  Moreover, in this embodiment, there are a normal sound reduction area and a time zone sound reduction area as the sound reduction area, and the facility side system 2 reduces the sound from the access point 22 installed in the time zone limited sound reduction area. The sound reduction area information is transmitted only during the time period. Therefore, whether to reduce the sound output from the horn 43 can be switched depending on the time zone.

  In the present embodiment, when the volume control unit 302 reduces the volume and outputs sound from the horn 43, the inter-vehicle communication unit 31 transmits a horn operation signal indicating that the horn 43 has been operated. The transmission control unit 303 is provided. Moreover, the speaker control part 304 which outputs a warning sound from the speaker 45 when this horn operation signal is received from another vehicle is also provided. Thereby, even if the sound output from the horn 43 is small, the driver of the signal receiving vehicle CRV that has received the horn operation signal can easily recognize that the surrounding vehicle has sounded the horn 43.

  In the present embodiment, the warning sound output from the speaker 45 is a sound that differs from the sound output from the horn 43 in at least one of the pitch and tone color. Therefore, the driver who hears the warning sound can easily recognize that the warning sound is output from the speaker 45 in the vehicle, not outside the vehicle. In addition, it can be recognized that the current position is at or near the sound reduction area.

  Moreover, in this embodiment, the access point 22 is communicable with the vehicle-to-vehicle communication part 31 with which the vehicle horn control apparatus 3 is provided. Therefore, the vehicle horn control device 3 does not have to include a separate communication unit for communicating with the access point 22.

  In the present embodiment, when the sound reduction determination unit 301 determines that the current position is within the sound reduction area, this is displayed on the display unit 46. Therefore, the driver can know that the sound output from the horn 43 is smaller than usual before operating the horn operation unit 41. Thereby, even if the sound heard when operating the horn operation part 41 is smaller than usual, it can suppress mistaking that it is a failure.

  In addition, since it is known in advance that the sound output from the horn 43 is small, it can be understood in advance that even if the horn 43 is sounded, there is little inconvenience to nearby persons. Therefore, it is less likely that the person around will be disturbed and hesitated to sound the horn 43 until necessary.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, The following modification is also contained in the technical scope of this invention, Furthermore, the summary other than the following is also included. Various modifications can be made without departing from the scope.

<Modification 1>
For example, in the above-described embodiment, the vehicle horn control device 3 receives the sound reduction area information from the outside of the vehicle and determines whether or not the current position is the sound reduction area from the sound reduction area information. Not limited to. The vehicle C includes a storage unit that stores map information for identifying a sound reduction area, and a current position acquisition unit that acquires a current position. From these storage unit and the current position acquisition unit, it is determined whether the current position is a sound reduction area. May be judged.

<Modification 2>
In the above-described embodiment, the facility-side wireless transmission device includes the access point 22 having a communication range of about several hundred meters. However, a communication device having a wider communication range may be used as the facility-side wireless transmission device. For example, a communication device connected to a mobile phone line may be a facility-side wireless transmission device. In this case, it is considered that the communication range of the facility-side wireless transmission device is wider than the sound reduction area. Therefore, information for specifying the range of the sound reduction area is included in the sound reduction area information, and the vehicle horn control device includes a position acquisition unit that acquires the current position.

<Modification 3>
In the above-described embodiment, the access point 22 installed in the time zone limited sound reduction area transmits the sound reduction area information only during the sound reduction time zone. However, instead of this, information indicating the sound reduction time zone may be included in the sound reduction area information, and the sound reduction area information may be transmitted periodically other than the sound reduction time zone.

<Modifications 4 and 5>
In the above-described embodiment, the access point 22 transmits the sound reduction area information by broadcast communication. However, the access point 22 may transmit the sound reduction area information by individual communication (Modification 4). The inter-vehicle communication unit 31 may also transmit a sound reduction instruction signal by individual communication (Modification 5).

<Modification 6>
In the above-described embodiment, the sound is output from the horn 43 even in the sound reduction area, although the volume is reduced. However, in the sound reduction area, only the sound reduction instruction signal may be transmitted and no sound may be output from the horn 43.

<Modification 7>
In the above-described embodiment, there is only one type of warning sound determined in advance. However, one type may be selected and output from a plurality of types of warning sounds in which at least one of the pitch of the warning sound and the tone color is different from each other. In this case, the facility-side system 2 also transmits sound designation information for specifying the pitch and tone of the warning sound along with the sound reduction area information from the access point 22, that is, the facility-side wireless transmission device. The sound designation information may directly designate the pitch and tone of the warning sound. Also, a specific code such as a number that can specify the pitch and tone of the warning sound is determined in advance, and the specific code is You may send it.

  When the inter-vehicle communication unit 31 receives the sound designation information such as the specific code, the transmission control unit 303 of the signal transmission vehicle CTV transmits the sound designation information from the inter-vehicle communication unit 31 together with the horn operation signal (S4). In the signal receiving vehicle CRV, a warning sound determined based on the sound designation information is output from the speaker 45.

  If it does in this way, the person who manages the facility side system 2 can judge a condition, and can output the warning sound according to a condition from the speaker 45 of the signal receiving vehicle CRV.

<Modification 8>
The sound reduction area information transmitted by the access point 22 may include volume designation information for designating the volume output from the horn 43.

  If it does in this way, the person who manages the facility side system 2 can judge a situation, and can change the volume of the sound sounded from the horn 43 of the signal transmission vehicle CTV according to the situation.

1: Horn sound reduction control system, 2: Facility side system, 3: Vehicle horn control device, 3a: Transmission vehicle side device, 3b: Reception vehicle side device, 21: Facility side control unit, 22: Access point (facility side Wireless transmission device), 30: control device, 31: inter-vehicle communication unit, 31a: inter-vehicle reception unit, 31b: inter-vehicle transmission unit, 41: horn operation unit, 42: horn control unit, 43: horn, 44: output Sound generation unit, 45: speaker, 46: display unit, 301: sound reduction determination unit, 302: volume control unit, 303: transmission control unit, 304: speaker control unit, 305: display control unit, C: vehicle, CRV: Signal receiving vehicle, CTV: Signal transmitting vehicle

Claims (12)

Used in vehicles with horn (43),
A sound reduction judgment unit (301, S1) for judging whether or not the position of the vehicle is within a sound reduction area where the volume output from the horn should be reduced;
Based on the fact that the sound reduction determination unit determines that the position of the vehicle is within the sound reduction area, the volume output from the horn when the user performs an operation to sound the horn, A vehicle horn control device (3) comprising: a volume control unit (302, S2, S3) that makes the position of the sound volume smaller than when the position is determined to be outside the sound reduction area. A vehicle horn control device (3) used in a vehicle equipped with a horn (43);
A facility-side wireless transmission device (22) for transmitting sound reduction area information for determining whether the position of the vehicle is within a sound reduction area where the volume output from the horn should be reduced;
A facility-side control unit (21) for transmitting the sound reduction area information from the facility-side wireless transmission device;
The vehicle horn control device comprises:
An in-vehicle wireless receiver (31a) for receiving the sound reduction area information from the facility-side wireless transmitter;
A sound reduction determination unit (301, S1) for determining whether the position of the vehicle is within the sound reduction area, based on the sound reduction area information received by the in-vehicle wireless reception unit;
Based on the fact that the sound reduction determination unit determines that the position of the vehicle is within the sound reduction area, the volume output from the horn when the user performs an operation to sound the horn, A horn sound reduction control system comprising: a volume control unit (302, S2, S3) that makes the position smaller than when the position is determined to be outside the sound reduction area. In claim 2,
The facility-side wireless transmission device is installed in the sound reduction area, and the communication range is the same as or narrower than the sound reduction area,
The sound reduction determination unit determines that the position of the vehicle is within the sound reduction area based on the fact that the in-vehicle wireless reception unit has received the sound reduction area information. system. In claim 2 or 3,
As the sound reduction area, there is a time zone limited sound reduction area in which a sound reduction time zone in which the volume output from the horn should be reduced is limited,
The facility-side control unit causes the facility-side radio transmitter installed in the time-limited sound reduction area to transmit the sound reduction area information only during the sound reduction time zone. Sound reduction control system. In claim 2 or 3,
As the sound reduction area, there is a time zone limited sound reduction area in which a sound reduction time zone in which the volume output from the horn should be reduced is limited,
The facility-side control unit transmits from the facility-side control unit including information indicating the sound reduction time zone in the sound reduction area information about the time zone limited sound reduction area,
The sound reduction determination unit determines whether the current time is the sound reduction time zone based on information indicating the sound reduction time zone included in the sound reduction area information received by the in-vehicle wireless reception unit. A horn sound reduction control system characterized by judging.   A horn control device for a vehicle, which is used in the horn sound reduction control system according to any one of claims 2 to 5. In claim 1 or 6,
A display control unit (305) for displaying on the display unit installed at a position visible to the driver in the vehicle that the sound reduction determination unit has determined that the position of the vehicle is within the sound reduction area. A vehicle horn control device comprising: Used in the first vehicle with horn (43),
A sound reduction judgment unit (301, S1) for judging whether or not the position of the first vehicle is within a sound reduction area where the volume output from the horn should be reduced;
Based on the fact that the sound reduction determination unit determines that the position of the first vehicle is within the sound reduction area, a sound volume output from the horn when an operation of sounding the horn is performed by a user. A volume control unit (302, S2, S3) that makes the position of the first vehicle smaller than when it is determined that the position is outside the sound reduction area;
Inter-vehicle communication unit (31),
When the volume control unit reduces the volume and outputs the sound of the horn, a transmission control unit (303, S4) transmits a horn operation signal indicating that the horn is operated from the inter-vehicle communication unit. ), A transmitting vehicle side device (3a) comprising:
Used in a second vehicle different from the first vehicle,
A vehicle-to-vehicle communication unit (31) that receives the horn operation signal transmitted from the vehicle-to-vehicle communication unit (31) of the transmission vehicle side device;
A receiving vehicle side device (3b) comprising: a speaker control unit (304, S11, S12) that outputs a warning sound from a speaker (44) in the vehicle when the inter-vehicle communication unit receives the horn operation signal. When,
A horn sound reduction control system comprising: In claim 8,
The horn sound reduction control system, wherein the speaker control unit outputs, as the warning sound, a sound that is different from at least one of a pitch and a tone color from a sound output from the horn of the second vehicle. In claim 8,
A facility-side wireless transmission device (22) for transmitting sound reduction area information for determining whether the position of the first vehicle is the sound reduction area;
A facility-side control unit (21) for transmitting the sound reduction area information from the facility-side wireless transmission device;
The transmission vehicle side device includes an in-vehicle wireless reception unit (31a) that receives the sound reduction area information from the facility side wireless transmission device,
The sound reduction determination unit determines whether the position of the first vehicle is within the sound reduction area based on the sound reduction area information received by the in-vehicle wireless reception unit,
The facility-side control unit also transmits sound designating information for identifying the pitch and tone color of the warning sound along with the sound reduction area information,
The horn sound reduction control system, wherein the speaker control unit outputs the warning sound determined based on the sound designation information received by the in-vehicle wireless reception unit from the speaker. In claim 8 or 9,
A facility-side wireless transmission device (22) for transmitting sound reduction area information for determining whether the position of the first vehicle is the sound reduction area, using radio waves of a frequency used in inter-vehicle communication;
A facility-side control unit (21) for transmitting the sound reduction area information from the facility-side wireless transmission device;
The transmission vehicle side device is:
The sound reduction area information is received by the inter-vehicle communication unit,
The sound reduction determination unit determines whether the position of the first vehicle is within the sound reduction area based on the sound reduction area information received by the inter-vehicle communication unit. Horn sound reduction control system.   A vehicle horn control device comprising the transmitting vehicle-side device according to any one of claims 8 to 11 and the receiving vehicle-side device.

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