JP6992447B2 - Vehicle approach notification device - Google Patents

Description

The present invention relates to a vehicle warning sound device.

While electric vehicles and hybrid vehicles are quiet and comfortable for passengers, pedestrians may find it difficult to notice the approach from behind. Therefore, in recent years, electric vehicles and the like are obliged to be equipped with a vehicle approach notification device that notifies pedestrians of approach by sound. For example, as shown in FIG. 2 of Patent Document 1, a general vehicle approach notification device is installed on a front grill or the like near the front surface of a vehicle so that sound can easily reach pedestrians.

Japanese Unexamined Patent Publication No. 2010-208557

It is necessary to raise the volume of the speaker in order to make it easier for pedestrians to notice the notification sound emitted from the vehicle warning device. However, the speaker itself is often omnidirectional, and there is a risk that the notification sound will reverberate in the vehicle interior simply by increasing the volume, which may affect the NV performance (noise, vibration) of the vehicle. Further, since the vicinity of the front surface of the vehicle in which the vehicle approach notification device is installed may be affected by the exhaust heat from the power unit such as the engine and the electric motor existing behind the vehicle, heat countermeasures are also required.

In view of such a problem, it is an object of the present invention to provide a vehicle approach notification device that enhances the directivity of the notification sound toward the front of the vehicle and considers heat insulation from the rear of the vehicle.

In order to solve the above problems, a typical configuration of the vehicle approach notification device according to the present invention is a large number of vehicle approach notification devices provided on the front surface of the vehicle and penetrating in the front-rear direction of the vehicle in the vehicle approach notification device for notifying pedestrians of approach from the vehicle. It is characterized by being provided with an emblem having a hole, a case that is in the shape of a vessel and is installed with the opening facing the emblem on the rear side of the vehicle, and a speaker unit that is housed in the case and generates a predetermined notification sound. And.

According to the present invention, it is possible to provide a vehicle approach notification device that enhances the directivity of the notification sound to the front of the vehicle and considers heat insulation from the rear of the vehicle.

It is a figure which showed the outline of the vehicle warning sounds device which concerns on 1st Embodiment of this invention. FIG. 1B is an exploded view of the vehicle warning sound device of FIG. 1 (b). It is a schematic block diagram of the vehicle warning sounds device of FIG. 1 (b). It is a figure which showed the modification of the vehicle approach notification device of FIG. It is a figure which showed the modification of the vehicle approach notification device of FIG.

The vehicle approach notification device according to an embodiment of the present invention is a vehicle approach notification device for notifying a pedestrian of an approach from a vehicle, and includes an emblem provided on the front surface of the vehicle and having a large number of holes penetrating in the front-rear direction of the vehicle. It is characterized by being provided with a case that is shaped like an emblem and is installed with an opening facing the emblem on the rear side of the vehicle, and a speaker unit that is housed in the case and generates a predetermined notification sound.

According to the above configuration, by using the most conspicuous emblem for reporting without a shield on the front of the vehicle, it is possible to clearly and fully convey the reporting sound to pedestrians. Further, by accommodating the speaker unit in the vessel-shaped case, the directivity of the notification sound to the front of the vehicle can be enhanced. With this configuration, it is possible to reduce unnecessary sound by preventing the diffusion of sound to the left and right and to the rear and suppressing the influence on the NV performance in the vehicle interior. Further, by accommodating the speaker unit in the case, it is possible to block heat from the power unit or the like behind the vehicle and protect the speaker unit.

The above case may have a front impact absorber that is located between the emblem and the speaker unit and is more vulnerable than other parts.

With the above configuration, even if the front surface of the vehicle touches an external structure or the like, it is possible not only to absorb the impact and prevent the speaker unit from being damaged, but also to reduce the impact given to the external structure.

The vehicle warning sounds device may further have a front impact absorbing member that is located between the emblem and the case and is more vulnerable than the case. With this configuration, even if the front surface of the vehicle touches an external structure, it is possible not only to absorb the impact and prevent damage to the speaker unit, but also to reduce the impact on the external structure. ..

The vehicle warning sounds further include a fixing member that supports the case and is fixed to the vehicle, which is located between the case and the vehicle and has a rear shock absorber that is more vulnerable than other parts. You may. With this configuration, even if the front surface of the vehicle touches an external structure, it is possible not only to absorb the impact and prevent damage to the speaker unit, but also to reduce the impact on the external structure. ..

The vehicle warning sounds device may further have a rear impact absorbing member provided adjacent to the vehicle rear side of the case and vulnerable to the case. With this configuration, even if the front surface of the vehicle touches an external structure, it is possible not only to absorb the impact and prevent damage to the speaker unit, but also to reduce the impact on the external structure. ..

In the above case, a material having a smaller temperature rise than the speaker unit may be used. With this configuration, it becomes possible to protect the speaker unit from the heat of the power unit or the like.

The vehicle warning sounds device may further include a heat shield member having a lower temperature rise than the case covering the outside of the case. This configuration also makes it possible to protect the speaker unit from the heat of the power unit or the like.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the examples are merely examples for facilitating the understanding of the invention, and are not limited to the present invention unless otherwise specified. In the present specification and the drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate explanations, and elements not directly related to the present invention are not shown. do.

FIG. 1 is a diagram showing an outline of the vehicle warning sounds device 100 according to the first embodiment of the present invention. FIG. 1A is a diagram showing a vehicle 102 equipped with the vehicle warning sounds device 100 of this embodiment. Hereinafter, in FIG. 1 and all other drawings of the present application, the front-rear direction of the vehicle is indicated by arrows F (Forward) and B (Backward), and the left and right directions of the vehicle width are indicated by arrows L (Leftward) and R (Rightward), respectively. Are illustrated by arrows U (upward) and D (downward), respectively.

The vehicle approach notification device 100 is an acoustic device that notifies a pedestrian of an approach from the vehicle 102, and uses the emblem 106 as a portion that emits a notification sound 104. The emblem 106 is a design part that symbolizes the manufacturer name and the vehicle name, and is provided at the center of the front grill 108 on the front surface of the vehicle body in the vehicle width direction.

FIG. 1 (b) is an enlarged view showing the vicinity of the emblem 106 of FIG. 1 (a). In this embodiment, the emblem 106 has a structure in which a large number of holes penetrate in the front-rear direction of the vehicle, such as a mesh material and a member having a porous structure, so that sound can be transmitted. For example, the logo 110 in the center may be made of a resin member having a porous structure, or the peripheral portion 112 around the logo 110 may be made of a mesh material. A speaker unit 114 (see FIG. 2) that emits a notification sound 104 is provided behind the vehicle of the emblem 106.

FIG. 2 is an exploded view of the vehicle warning sound device 100 of FIG. 1 (b). The emblem 106 is provided as a lid of the case 116, and a speaker unit 114 is provided inside the case 116. The speaker unit 114 is housed in the case 116 and is electrically connected to the vehicle side.

The case 116 is a vessel-shaped component having an opening 118 on the front side of the vehicle, and is installed on the rear side of the vehicle of the emblem 106 with the opening 118 facing the emblem 106. In the case 116, the rear side of the vehicle is closed, and the speaker unit 114 is shielded except in the front of the vehicle. In this embodiment, the case 116 has a cylindrical shape, but the shape is not limited, and a cone shape, a dome shape, or the like can be used.

FIG. 3 is a schematic configuration diagram of the vehicle warning sound device 100 of FIG. 1 (b). FIG. 3 is shown corresponding to the vertical cross section of the vehicle warning device 100 in the vehicle front-rear direction. The fixing member 120 is a component for fixing the case 116 to the vehicle, and is installed behind the vehicle such as a hood lock member 124 to which the hood 122 is connected, a predetermined cross member, and a bumper member 126 below the hood lock member 124. Will be done.

The case 116 is formed by using a material having a smaller temperature rise than the speaker unit 114. A radiator 128 that dissipates heat is present on the rear side of the vehicle approach notification device 100, and behind the radiator is a power unit mounting room in which a power unit (not shown) such as an engine or an electric motor is installed. The case 116 can protect the speaker unit 114 from the heat of the radiator 128 and the power unit, for example, by using a heat insulating material having a low thermal conductivity as the material.

As described above, in the vehicle approach notification device 100, the emblem 106, which has no obstruction on the front surface of the vehicle and is most noticeable, is used for notification to notify pedestrians of the notification sound 104 (see FIG. 1A). ) Can be clearly and fully communicated. Further, by accommodating the speaker unit 114 in the container-shaped case 116, it is possible to enhance the directivity of the notification sound 104 toward the front of the vehicle. With this configuration, it is possible to prevent the sound from diffusing to the left and right and to the rear, and to suppress the intrusion of the notification sound into the vehicle interior. Further, the speaker unit 114 is installed near the front surface of the vehicle away from the vehicle interior, which is also a factor for improving the NV performance.

The vehicle warning sounds device 100 of this embodiment can also absorb impacts in an emergency. For example, a front impact absorbing portion 130 is provided on the vehicle front side of the case 116. The front impact absorbing portion 130 is a portion of the case 116 that is arranged between the emblem 106 and the speaker unit 114 and is more vulnerable than other portions. For example, the front impact absorbing portion 130 is realized as a portion easily deformed by a load from the front of the vehicle by providing predetermined beads, notches, and bellows-shaped portions at various places in the circumferential direction of the case 116. be able to. By providing the front shock absorbing portion 130, even if the front surface of the vehicle 102 touches an external structure or the like, the shock is absorbed and not only the speaker unit 114 is prevented from being damaged but also the shock given to the external structure is given. Can also be reduced.

In addition to the front impact absorbing portion 130 described above, the fixing member 120 is provided with a rear impact absorbing portion 132 between the case 116 and the hood lock member 124 and the bumper member 126 on the vehicle side. The rear impact absorbing portion 132 is also provided as a portion of the fixing member 120 that is more vulnerable than other portions. The rear impact absorbing portion 132 can also be provided as a portion that is easily deformed by a load from the front of the vehicle by a predetermined bead, a notch, a bellows-shaped portion, or the like. The rear impact absorbing unit 132 also absorbs the impact when the front surface of the vehicle 102 touches an external structure or the like to prevent damage to the speaker unit 114, as well as the external structure and the rear of the vehicle. It is also possible to reduce the impact on the structure existing in the power unit mounting room on the side.

(Modification example)
4 and 5 are views showing a modified example of the vehicle warning sound device 100 of FIG. Hereinafter, the same components as those already described will be omitted by assigning the same reference numerals. Further, even if the components have the same names as those already described, even if they have different reference numerals, they have the same functions unless otherwise specified.

In the vehicle approach notification device 200 of the first modification shown in FIG. 4A, a front impact absorbing member 202 is provided between the emblem 106 and the case 116. The front impact absorbing member 202 is made of a material that is more fragile and more easily deformed than the case 116, such as an elastic body made of resin, and can be provided in an annular shape along the edge of the opening 118 of the case 116. Even if the front surface of the vehicle 102 touches an external structure or the like, the front impact absorbing member 202 not only absorbs the impact and prevents the speaker unit 114 from being damaged, but also reduces the impact given to the external structure. Will be possible. The front impact absorbing member 202 can also be installed together with the front impact absorbing portion 130 of the case of FIG.

In the vehicle approach notification device 220 of the second modification shown in FIG. 4B, a rear impact absorbing member 222 is provided adjacent to the vehicle rear side of the case 116. The rear impact absorbing member 222 is also made of a material that is more fragile and more easily deformed than the case 116, such as an elastic body made of resin. Even if the front surface of the vehicle 102 touches an external structure or the like, the rear impact absorbing member 222 not only absorbs the impact and prevents the speaker unit 114 from being damaged, but also gives an impact to the external structure. It will be possible to reduce it.

The vehicle warning sounds device 240 of the third modification shown in FIG. 5 is provided with a heat shield member 242 that covers the outside of the case 116. The heat shield member 242 is made of a material having a lower temperature rise than the case 116. The heat shield member 242 may be configured by using, for example, an aluminum foil or a copper foil to reflect radiant heat and suppress a temperature rise. These configurations also make it possible to protect the case 116 and the speaker unit 114 from the heat of the power unit and the like.

It should be noted that the components described in each modification can be implemented in appropriate combinations with each other. For example, the front impact absorbing member 202 of the first modification and the rear impact absorbing member 22 of the second modification may be installed together, or the heat shield member 242 of the third modification may be further provided therein. Is.

Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to such examples. It is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. Understood.

The present invention can be used for a vehicle approach notification device.

100 ... Vehicle approach notification device, 102 ... Vehicle, 104 ... Notification sound, 106 ... Emblem, 108 ... Front grill, 110 ... Logo, 112 ... Peripheral part, 114 ... Speaker unit, 116 ... Case, 118 ... Opening, 120 ... Fixed Member, 122 ... Hood, 124 ... Hood lock member, 126 ... Bumper member, 128 ... Radiator, 130 ... Front shock absorber, 132 ... Rear shock absorber, 200 ... Vehicle approach notification device, 202 ... Front shock absorber, 220 ... Vehicle approach notification device, 222 ... Rear impact absorbing member, 240 ... Vehicle approach notification device, 242 ... Heat shield member

Claims (6)

In the vehicle approach notification device that notifies pedestrians of the approach from the vehicle
An emblem provided on the front of the vehicle and having a large number of holes penetrating in the front-rear direction of the vehicle,
A case in which the emblem is in the shape of a vessel and the opening is installed toward the emblem on the rear side of the vehicle.
It is equipped with a speaker unit that is housed in the case and generates a predetermined notification sound .
The case is a vehicle approach notification device which is arranged between the emblem and the speaker unit and has a front impact absorbing portion which is weaker than other parts . The vehicle approach notification device according to claim 1 , further comprising a front impact absorbing member that is arranged between the emblem and the case and is weaker than the case. The vehicle warning sounds further include a fixing member that supports and secures the case to the vehicle.
The vehicle approach notification device according to claim 1 or 2 , wherein the fixing member has a rear impact absorbing portion that is arranged between the case and the vehicle and is weaker than other portions. 6 . Vehicle approach notification device. The vehicle approach notification device according to any one of claims 1 to 4 , wherein the case is made of a material having a smaller temperature rise than the speaker unit. The vehicle approach notification device according to any one of claims 1 to 5 , further comprising a heat shield member that covers the outside of the case and has a lower temperature rise than the case.

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