JP2017013656A - Alarm sound blowing device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To blow an alarm sound which can be caught by a user outside a vehicle.SOLUTION: A cover member 15 is continuously provided on a buzzer 10 which is located inside a fender panel 2. The cover member 15 comprises a cylindrical guide part 16 which surrounds a sound radiation part 10a of the buzzer 10 and is extended to the fender panel 2 side, and an opening 17 which is opened to an outer surface side of the fender panel 2. When an alarm sound is radiated from the sound radiation part 10a, the alarm sound is directed to a set direction by the guide part 16 without generation of reflection of the sound to an inner side of a vehicle body and attenuation of the sound, whereby the alarm sound can be efficiently blown from the opening 17, and further, directivity of the alarm sound toward a user outside a vehicle is assured, whereby the alarm sound can be easily heard.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a warning sound blowing device for a vehicle that blows a warning sound outside the vehicle.

  In vehicles such as automobiles, in addition to various alarms in the car while driving, it is possible to lock / unlock the door, start the engine, etc. without requiring a vehicle anti-theft device or mechanical key operation There is a case where an alarm sound is emitted toward the outside of the vehicle after stopping traveling, such as an electronic key system (smart keyless system).

  For example, in an electronic key system (smart keyless system), the user can take the electronic key outside the vehicle without turning off the vehicle after stopping, so that the user can leave the vehicle without turning off the vehicle. In the case of the error, an alarm sound blowing device such as a buzzer is operated to notify the user of an alarm.

  For example, in Patent Document 1, when the portable device of the smart keyless device is taken out of the vehicle with the engine started, an alarm buzzer attached to the rear side of the fender panel on the front side of the passenger compartment is activated to generate an alarm sound. Techniques for performing are disclosed.

JP 2008-106579 A

  However, as disclosed in Patent Document 1, since the conventional alarm buzzer is arranged at a location surrounded by the vehicle body exterior such as the back side of the fender panel, most of the alarm sound is reflected within the exterior, It will be absorbed inside the exterior. As a result, the sound pressure that can be heard outside the passenger compartment decreases, and the user outside the vehicle may not hear the alarm sound.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an alarm sound blowing device for a vehicle that can sound an alarm sound so that a user outside the vehicle can surely hear it.

  An alarm sound blowing device for a vehicle according to an aspect of the present invention is an alarm sound blowing device for blowing an alarm sound to the outside of a vehicle, and is provided in an exterior portion of the vehicle and emits an alarm sound; And an alarm direction control unit for directing an alarm sound emitted from the alarm sounding unit in a setting direction.

  According to the present invention, it is possible to sound an alarm sound so that a user outside the vehicle can surely hear.

Explanatory drawing which shows arrangement | positioning of a buzzer concerning 1st Embodiment of this invention. Explanatory drawing which shows the buzzer and cover member inside a fender panel same as the above. Explanatory drawing which shows the buzzer and rotary part which were provided in the door mirror according to 2nd Embodiment of this invention. As above, an explanatory diagram showing the direction of the alarm sound when the door mirror is open As above, an explanatory diagram showing the direction of the alarm sound when the door mirror is closed Same as above, explanatory diagram showing direction change of alarm sound due to rotation of turntable

Embodiments of the present invention will be described below with reference to the drawings.
First, a first embodiment of the present invention will be described. In FIG. 1, reference numeral 1 denotes a vehicle, and an alarm sound is emitted toward the exterior of the vehicle 1, for example, on an exterior portion such as a fender panel 2 at the front of the vehicle or a door mirror 4 installed on the front door 3. An alarm sound blowing device is provided.

  In the first embodiment, an example in which an alarm sound blowing device is disposed inside the fender panel 2 will be described. As shown in FIG. 2, the alarm sound blowing device is a buzzer 10 as an alarm sounding unit that sounds an alarm sound, and an alarm direction control unit that directs an alarm sound emitted by the buzzer 10 in a set direction. The cover member 15 is provided.

  The buzzer 10 incorporates a piezoelectric element, for example, and electrically drives the piezoelectric element at a predetermined frequency, thereby sounding an alarm sound having a predetermined sound pressure from the sound wave radiating unit 10a. The sound wave radiating portion 10a is formed by arranging a single piezoelectric element or a plurality of piezoelectric elements in an array. Further, the buzzer 10 is formed with a waterproof structure in order to protect electric components such as a built-in piezoelectric element from external moisture.

  The buzzer 10 is attached to, for example, a side frame upper 6 connected to the front pillar 5, and is disposed on the inner side (back side) near the rear end of the fender panel 2 that serves as a vehicle body exterior behind the tire 7. In this case, since the buzzer 10 is disposed inside the fender panel 2, most of the audible alarm sound alone is reflected or absorbed by the fender panel 2, and the sound pressure that can be heard outside the passenger compartment is reduced. End up.

  For this reason, the buzzer 10 is continuously provided with a cover member 15 as an alarm direction control unit that directs an alarm sound in a set direction. The cover member 15 includes a cylindrical guide portion 16 that surrounds the sound wave emitting portion 10 a of the buzzer 10 and extends toward the fender panel 2, and an opening portion 17 that opens to the outer surface side of the fender panel 2.

  The guide portion 16 is formed, for example, in a horn shape, and is set in a shape and material capable of realizing the required acoustic characteristics and directivity, and the mounting direction is set so as to direct the alarm sound in a desired direction. Has been. An elastic material may be interposed between the contact portion between the guide portion 16 and the sound wave emitting portion 10a of the buzzer 10, or the contact portion between the periphery of the opening 17 and the fender panel 2. Further, the opening 17 may use a gap between the rear end side of the fender panel 2 and the door panel, and the influence on the vehicle design can be minimized. Furthermore, the opening 17 may be provided with a member having an acoustic lens function.

  By providing such a cover member 15 to the buzzer 10, when an alarm sound is emitted from the sound wave radiating portion 10 a of the buzzer 10, an alarm is generated at the guide portion 16 without causing reflection or attenuation of the sound to the inside of the vehicle body. Sound can be directed in the set direction, and an alarm sound can be efficiently blown out from the opening 17. As a result, it is possible to secure the directivity of the warning sound toward the user (occupant) outside the vehicle and make the warning sound easy to hear.

  As described above, in the first embodiment, when the buzzer 10 that sounds an alarm sound is installed inside the vehicle body exterior, the cover member 15 is connected to the buzzer 10 so that the sound is reflected or attenuated inside the vehicle body. And the directivity of the alarm sound in the set direction can be secured. Thereby, for example, in a vehicle equipped with an electronic key system, even if the occupant goes out of the vehicle with the vehicle power on, an alarm notification can be made so that the user (occupant) who goes out of the vehicle can reliably hear, It is possible to prevent the user from leaving the vehicle without noticing.

  Next, a second embodiment of the present invention will be described. The second form is an example in which a buzzer 10 is installed on the door mirror 4.

  When the buzzer 10 is installed on the door mirror 4, the door mirror 4 swings between the deployed position and the retracted position, so that the direction of the sound wave radiating portion 10a of the buzzer 10 also changes. For this reason, in the second embodiment, as shown in FIG. 3, an alarm direction control unit for directing an alarm sound emitted by the buzzer 10 in a set direction is provided with a turntable 30 to which the buzzer 10 is attached, and the turntable 30. It is comprised by the rotation part 50 provided with the drive mechanism part 40 which rotationally drives.

  For example, the door mirror 4 is a retractable door mirror that swings when driven by a motor, and includes a storage mechanism unit 20 that swings the door mirror 4 between a deployed position and a storage position, and an adjustment mechanism unit 25 that adjusts the angle of the mirror surface. Is provided in the housing 4a. In the second embodiment, a turntable 30 is also rotatably disposed in the housing 4a of the door mirror 4 at the bottom of the adjustment mechanism 25 at the side of the storage mechanism 20. A buzzer 10 is attached and fixed on the top.

  The buzzer 10 is mounted on the turntable 30 with the sound wave emitting portion 10a facing downward, and an opening 31 is provided at the center of the turntable 30 corresponding to the sound wave emitting portion 10a. The opening 31 communicates with a lateral hole 33 provided in the guide part 32 below the turntable 30, and alarm sound from the sound wave radiating part 10 a passes through the lateral hole 33 of the guide part 32 from the opening 31. The light is radiated to the outside through the opening 34 opened to the side portion 32.

  The guide part 32 at the lower part of the turntable 30 has a cylindrical outer shape and rotatably supports the turntable 30 on the housing 4a. The guide part 32 has a first through a horizontal hole 33 communicating with the opening 31 at the center of the turntable 30. It is formed so as to have the same function as the cylindrical guide portion 16 in the form, and the opening 34 is set so as to face substantially the horizontal direction. In addition, the guide part 32 is not necessarily essential, for example, the buzzer 10 may be attached to the lower part of the turntable 30 so that the sound wave radiating part 10a faces in the substantially horizontal direction and exposed to the lower part of the housing 4a.

  Further, the rotary table 30 may be omitted, and the buzzer 10 may be directly rotated by the drive mechanism unit 40. That is, it is also possible to configure the rotation unit 50 as an alarm direction control unit that directs an alarm sound emitted by the buzzer 10 in a set direction by using only the drive mechanism unit 40.

  The drive mechanism unit 40 is an actuator that rotationally drives the turntable 30, and can be constituted by a mechanical link mechanism, a gear mechanism, or an electric mechanism such as a motor. When the drive mechanism unit 40 is configured as a mechanical mechanism, the rotatable position is limited. For example, by interlocking with the storage mechanism unit 20, the guide unit is set between the storage position and the deployment position of the door mirror 4. As in the first embodiment, it is possible to make an alarm notification so that the user outside the vehicle can hear the sound reliably, so that the opening 34 at the tip of 32 is always directed in the same direction.

  On the other hand, when the drive mechanism unit 40 is configured as an electric mechanism using a motor, a gear, or the like, the opening 34 at the tip of the guide unit 32 can be directed in an arbitrary direction regardless of the swinging position of the door mirror 4. . In the second embodiment, the drive mechanism unit 40 is configured as an electric mechanism, and for example, the rotary table 30 is rotationally driven by meshing a pinion fixed to the motor shaft with a gear provided on the outer periphery of the rotary table 30.

  In the second mode, a signal from the user position detection unit 70 that detects the position of the user who has gone out of the vehicle is input to the rotation control unit 60 that drives the drive mechanism unit 40 to control the rotation of the turntable 30. Then, the rotation control of the turntable 30 following the user position outside the vehicle is performed. That is, the rotation control unit 60 rotates the turntable 30 based on the signal from the user position detection unit 70 so that the opening 34 opened at the tip of the guide portion 32 of the turntable 30 faces the user outside the vehicle. Control.

  For example, in the electronic key system, the user position detection unit 70 detects the user position when the user goes out of the vehicle with the electronic key while the vehicle power is turned on. The position of the electronic key is specified based on the above and detected as the user position. Then, the rotation position of the turntable 30 is controlled by the rotation control unit 60 via the drive mechanism unit 40 so that the radiation direction of the alarm sound is the direction of the detection position of the user.

  Further, the user position may be detected based on the image of the in-vehicle camera. For example, in a keyless entry system, when the user goes out of the vehicle without locking the door and tries to leave the vehicle as it is, the user position detection unit 70 processes the time-series images from the in-vehicle camera to determine the user's moving direction. To detect. Then, the rotation position of the turntable 30 is controlled by the rotation control unit 60 via the drive mechanism unit 40 so that the alarm sound is emitted in the direction of movement of the user.

  Here, as shown in FIG. 4, even when the door mirror 4 is open and the direction Aw1 of the alarm sound of the buzzer 10 in the door mirror 4 is directed to the direction of the user HM outside the vehicle, FIG. When the door mirror 4 is closed, the alarm sound is directed in the direction Aw2 behind the vehicle when the rotation control of the turntable 30 is not performed. As a result, it becomes difficult to secure a desired sound pressure in the direction of the user HM.

  For this reason, the position of the user HM is detected by the user position detection unit 70, and the rotation control unit 60 rotates the rotary table 30 as shown in FIG. To the direction Aw1 in which the user HM is present. Thereby, irrespective of the swinging position of the door mirror 4, the alarm sound from the buzzer 10 can be directed toward the user to ensure the sound pressure, and the alarm notification is performed so that the user outside the vehicle can be surely heard. Is possible.

  In the second mode, as in the first mode, not only can an alarm be notified so that a user outside the vehicle can hear it reliably, but the position of the user outside the vehicle can be detected, and the direction of the user can be positively detected. By controlling the direction of the alarm sound, the alarm notification can be performed more reliably. In addition, by providing the buzzer 10 and the rotating unit 50 as the warning direction control unit inside or below the door mirror 4, the influence on the vehicle design can be minimized.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Fender panel 4 Door mirror 10 Buzzer 10a Sound wave emission part 15 Cover member 16 Guide part 17 Opening part 30 Turntable 31 Opening part 31
32 Guide part 34 Opening part 40 Drive mechanism part 50 Rotation part 60 Rotation control part 70 User position detection part

Claims (4)

An alarm sound blowing device for blowing an alarm sound outside a vehicle,
An alarm sounding part that is arranged in an exterior part of the vehicle and that sounds an alarm sound;
An alarm sound blowing device for a vehicle, comprising: an alarm direction control unit that directs an alarm sound emitted from the alarm sounding unit in a setting direction.   The alarm sounding unit is disposed inside a front fender, and the alarm direction control unit includes a cover member that extends in a cylindrical shape and surrounds the alarm sounding unit and opens to the front fender. The vehicle alarm sound blowing device according to claim 1.   The said alarm sounding part is arrange | positioned at the door mirror, The said alarm direction control part is provided with the rotation part which rotates the said alarm sounding part, The alarm sound sounding apparatus of the vehicle of Claim 1 characterized by the above-mentioned.   4. The vehicle alarm sound according to claim 3, further comprising a rotation control unit that controls the rotation of the rotating unit so that a radiation direction of the alarm sound emitted from the alarm sounding unit is directed toward an occupant outside the vehicle. Sounding device.

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