JP2019108050A - On-vehicle apparatus - Google Patents

Abstract

To provide an on-vehicle apparatus capable of removing dust adhered to a surface of a protection glass without impairing the appearance of the protection glass.SOLUTION: A meter panel 15 provided in the interior of a vehicle includes an instrument panel, and a protection glass 40 that is made of a transparent resin material and is provided to cover the instrument panel. A vibration sheet 50 capable of forcibly vibrating the protection glass 40 is provided on the protection glass 40.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an in-vehicle apparatus having a display unit for displaying information toward a vehicle interior and a protective glass for covering and protecting the display unit.

  A meter panel is attached in front of the driver's seat of a vehicle such as a car. The meter panel has an instrument panel to which various instruments (such as a speedometer) are attached, and a protective glass for covering and protecting the passenger compartment side (driver's seat side) of the instrument panel (for example, Patent Document 1). This protective glass is formed in a plate shape by a transparent resin material (for example, acrylic resin).

Japanese Utility Model Application Publication No. 6-47822

  In the said meter panel, it is not avoidable that dust adheres to the surface of protective glass. Usually, when dust adheres to the surface of the protective glass, the dust is removed by wiping with a cloth or the like. However, at the time of this wiping and cleaning, the surface of the protective glass is rubbed by dust, and linear scratches may be formed on the surface. This is not preferable because it causes the appearance of the protective glass and hence the meter panel to deteriorate.

  In addition, the actual condition about the damage of such protective glass is not limited to the meter panel mentioned above, but it is an on-vehicle apparatus (for air conditioners) having a display unit for displaying information and a transparent plate-like protective glass for covering the display unit. In the operation panel etc., it is common in general.

  The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to mount on-vehicle equipment capable of removing dust attached to the surface of the protective glass in a mode which does not cause deterioration of the appearance of the protective glass. It is to provide.

  An on-vehicle apparatus for solving the above-mentioned problems is an on-vehicle apparatus provided in a vehicle compartment and having a display unit for displaying information and a protective glass made of a transparent resin material and arranged to cover the display unit. The protective glass is provided with a vibrating portion capable of forcibly vibrating the protective glass.

  According to the above configuration, the dust adhering to the surface of the protective glass can be moved and removed by vibrating the protective glass by the vibrating portion, thereby suppressing the generation of scratches caused by wiping the surface of the protective glass. be able to. Therefore, dust attached to the surface of the protective glass can be removed in a manner that does not cause deterioration in the appearance of the protective glass.

In the on-vehicle apparatus, the vibration unit preferably functions as a speaker.
According to the above-described configuration, the voice information to the occupant (for example, an announcement of a content prompting a warning, a warning sound, music, etc.) according to the execution of removal of dust on the surface of the protective glass by forcibly vibrating the vibrating portion. Transmission can be performed. Therefore, it is possible to execute the removal of dust on the surface of the protective glass in a state in which the occupant hardly notices, each time the vibration unit and the protective glass are forcibly vibrated to transmit voice information.

In the on-vehicle device, the speaker is preferably a superdirective speaker that generates a sound by using an ultrasonic wave.
According to the above configuration, it is possible to generate sound having high directivity in a specific direction from the vibration unit functioning as a superdirective speaker (so-called parametric speaker). Therefore, the vibration unit can be used as a speaker for transmitting voice information only to a specific range (for example, a driver's seat) according to the arrangement position of the in-vehicle device in the vehicle compartment.

In the on-vehicle apparatus, it is preferable that the vibrating portion is provided on the outer surface of the protective glass in the form of a transparent sheet.
According to the above configuration, although the vibrating portion is provided on the outer surface of the protective glass, most of the vibrating portion is in the form of a transparent sheet, so the vibrating portion interferes with visual recognition of the information displayed on the display unit. It is possible to make the structure difficult to become. Therefore, the vibrating portion can be arranged with a high degree of freedom.

  In the vehicle-mounted device, it is preferable that an outer edge portion of the protective glass is fixed to a main body of the vehicle-mounted device, and the vibrating portion is provided at a central portion surrounded by the outer edge portion of the protective glass. .

  The rigidity of the protective glass tends to be high in the part fixed to the vehicle body (outer edge part) and low in the part not directly fixed to the vehicle body (central part surrounded by the outer edge part) . According to the above configuration, the vibrating portion is provided at the central portion of the protective glass, that is, the portion where the rigidity tends to be low, and therefore the protective glass is less energy by the vibrating portion compared to the case where the vibrating portion is provided at the outer edge portion. It can be forced to vibrate.

  The on-vehicle device may be a meter panel provided in front of the driver's seat.

  According to the on-vehicle apparatus of the present invention, dust attached to the surface of the protective glass can be removed in a mode that does not cause deterioration in the appearance of the protective glass.

BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows the front structure of the compartment provided with the vehicle-mounted apparatus of one Embodiment. Sectional drawing which shows partially the internal structure and peripheral structure of a meter panel. The disassembled perspective view of a meter panel. The side view which looked at a meter panel and its circumference from the vehicle interior side. The front view of the control panel for air conditioners.

Hereinafter, one embodiment of the in-vehicle apparatus will be described.
As shown in FIG. 1, an instrument panel 14 is attached to the front of the passenger compartment 11 (specifically, in front of the driver's seat 12 and the front passenger's seat 13). A meter panel 15 and a meter cluster panel 16 are attached to a portion of the instrument panel 14 in front of the driver's seat 12. The meter cluster panel 16 is disposed so as to cover the inside of the passenger compartment 11 of the outer edge of the display surface of the meter panel 15 (the surface on the driver's seat 12 side). As shown in FIG. 2, the meter cluster panel 16 has a structure in which the display screen outer edge of the meter panel 15 can not be seen from the inside of the passenger compartment 11. In the present embodiment, the meter panel 15 corresponds to a vehicle-mounted device.

  As shown in FIG. 3, the meter panel 15 covers the panel body 20 as the main body of the in-vehicle device, the instrument panel 30 provided inside the panel body 20, and the entire inside of the compartment 11 of the instrument panel 30. A protective glass 40 is provided.

  The panel main body 20 has an annular peripheral wall 21 and a bottom wall 22 shaped to close an opening on one side (front side) of the peripheral wall 21. A plurality of engagement recesses 23 are provided on the outer surface of the circumferential wall 21 so as to be spaced apart in the circumferential direction. Further, on the outer surface of the peripheral wall 21, a convex portion (flange portion 24) extending over the entire circumference is provided.

  The instrument panel 30 includes various instruments such as a speedometer 31, a tachometer 32, a fuel meter 33, and a trip meter 34. The dashboard 30 is provided on the meter panel 15 in such a manner that various instruments can be viewed from the driver's seat 12. In the present embodiment, the instrument panel 30 corresponds to a display unit that displays information.

  The protective glass 40 is integrally formed of a transparent (more specifically, colorless and transparent) resin material (in the embodiment, an acrylic resin). The outer edge portion of the protective glass 40 is an annular wall portion 41 projecting to the side of the panel main body 20 (front side) over the entire circumference. The annular wall portion 41 is provided with a plurality of engaging claws 43 projecting to the side of the panel main body 20 at intervals in the circumferential direction. The engagement claws 43 are provided at positions where they engage with the engagement recesses 23 of the panel main body 20 in a state where the protective glass 40 is attached to the panel main body 20. The term "transparent" in the present embodiment means that the instrument panel 30 inside the meter panel 15 can be seen through from the outside, and includes colorless and transparent (colored transparent (black transparent, blue transparent, etc.)).

  When attaching the protective glass 40 to the panel main body 20, first, the end of the casing 11 inside (the driver's seat 12 side) of the peripheral wall 21 of the panel main body 20 is inserted into the annular wall portion 41 of the protective glass 40 . Then, in this state, the engagement claws 43 of the annular wall portion 41 of the protective glass 40 are engaged with the engagement recesses 23 of the peripheral wall 21 of the panel main body 20. Thereby, the protective glass 40 is fixed to the panel main body 20.

  As shown in FIGS. 2 and 3, in a state where the protective glass 40 is fixed to the panel body 20 (state shown in FIG. 2), the tip end surface of the annular wall portion 41 of the protective glass 40 and the flange portion 24 of the panel main body 20 It is designed to face the wall of the house. As a result, the meter panel 15 has a structure in which foreign substances such as dust and dirt are difficult to intrude into the inside of the meter panel 15 from the gap between the panel main body 20 and the protective glass 40.

  In the present embodiment, a vibrating sheet 50 as a vibrating portion is attached to the outer surface (surface inside the passenger compartment 11) of the protective glass 40. The meter panel 15 of the present embodiment has a structure capable of forcibly vibrating the protective glass 40 by operating the vibrating sheet 50.

  The vibrating sheet 50 has a film portion 51 made of a transparent (more specifically, colorless and transparent) resin film (so-called piezo film) that exerts a piezoelectric effect. The film portion 51 is in the form of a rectangular sheet. The vibrating sheet 50 also has an electrode 52 formed of a metal film (for example, a nickel copper film) integrally formed separately in the vicinity of both ends in the longitudinal direction of the film portion 51, and a wiring 53 connected to the electrodes 52. ing.

  The vibrating sheet 50 is attached to a central portion surrounded by the outer edge portion of the protective glass 40 so as to extend in the vertical direction of the vehicle (vertical direction in FIG. 2). In addition, the vibrating sheet 50 is provided on the protective glass 40 in a mode in which the electrodes 52 are disposed along the outer edge portion of the protective glass 40 and in a mode in which the wires 53 extend from the electrodes 52 toward the outer edge of the protective glass 40. It is provided.

  As shown in FIGS. 2 and 4, a meter cluster panel 16 is disposed so as to cover the inside of the passenger compartment 11 of the outer edge of the display surface of the meter panel 15. Therefore, this meter cluster panel 16 has a structure in which the electrodes 52 and the wires 53 disposed on the display screen outer edge of the meter panel 15 (specifically, the outer edge portion of the protection panel 40 and its vicinity) are not visible from inside the cabin 11 ing.

  As shown in FIGS. 2 and 3, the vehicle is provided with an electronic control unit 17 configured mainly of, for example, a microcomputer. The vibrating sheet 50 is connected to the electronic control unit 17 through the wiring 53. Then, the electronic control unit 17 performs operation control of the vibrating sheet 50 in accordance with the state of each part of the vehicle and the condition around the vehicle.

  As the vibrating sheet 50, one that functions as a superdirective speaker (so-called parametric speaker) that generates sound using ultrasonic waves is employed. In the present embodiment, the occupant to whom the sound emitted from the vibration seat 50 is transmitted is the driver seated on the driver's seat 12 (see FIG. 1). Then, through the operation control of the vibrating sheet 50, voice information (for example, an announcement of a content that warns the driver) is issued to the driver's seat 12. As the voice information, there may be mentioned that the seat belt is not worn or that the distance between the vehicles is short.

Hereinafter, the operation by providing the vibrating sheet 50 on the meter panel 15 will be described.
As shown in FIG. 2, dust D adheres to the surface of the protective glass 40 of the meter panel 15. In this embodiment, in such a case, the dust D attached to the surface of the protective glass 40 can be dropped downward and removed by operating the vibrating sheet 50 to forcibly vibrate the protective glass 40. Furthermore, dust D dropped downward from the surface of the protective glass 40 falls to the back side (front side) of the meter cluster panel 16 through the gap between the meter cluster panel 16 and the meter panel 15 (protective glass 40). It is supposed to be.

  As described above, according to the present embodiment, since the dust D attached to the surface of the protective glass 40 can be removed without wiping the surface of the protective glass 40 with a cloth or the like, the surface of the protective glass 40 can be wiped Generation of blemishes due to Therefore, the dust D attached to the surface of the protective glass 40 can be removed in a manner that does not cause deterioration in the appearance of the protective glass 40.

  In the present embodiment, the vibrating sheet 50 functions as a superdirective speaker. Therefore, by operating the vibrating sheet 50, it is possible to execute the transmission of the voice information to the driver in accordance with the execution of the removal of the dust D on the surface of the protective glass 40. Therefore, every time the vibrating sheet 50 is operated to transmit voice information, the dust D on the surface of the protective glass 40 can be removed in a state in which the driver hardly notices.

  In addition, by operating the vibrating sheet 50 at the timing when transmission of voice information to the driver is required, operation control of the vibrating sheet 50 is performed at a particular timing for removing dust D on the surface of the protective glass 40. It is also possible to execute the removal of the dust D without the need.

  Furthermore, in addition to using the vibrating sheet 50 as a member for removing dust D on the surface of the protective glass 40, since it can be used as a member for transmitting voice information to the driver, these members are separately provided. Compared to the case, the function of removing the dust D on the surface of the protective glass 40 and the function of transmitting voice information to the driver can be realized with a simple structure.

  In addition, since the vibrating sheet 50 functioning as a superdirective speaker is provided on the meter panel 15 (protective glass 40) in front of the driver's seat 12, it has high directivity from the vibrating sheet 50 toward the driver's seat 12 Sound can be generated. Therefore, the vibration seat 50 can be used as a speaker for transmitting voice information only to the driver's seat 12 (specifically, the driver sitting on the driver's seat 12).

  In the present embodiment, although the vibrating sheet 50 is attached to the outer surface of the protective glass 40, most of the vibrating sheet 50 (specifically, the film portion 51) is in the form of a transparent sheet. When the information (display values of various instruments) to be displayed on the screen is viewed, the vibrating sheet 50 can be a structure that does not easily get in the way. Thereby, the vibrating sheet 50 can be arranged with high degree of freedom with respect to the surface of the protective glass 40.

  Here, in order to forcibly vibrate the protective glass 40 efficiently by the vibrating sheet 50, it is preferable to dispose the vibrating sheet 50 in a low rigidity portion of the protective glass 40. The outer edge portion of the protective glass 40 is a portion having the annular wall portion 41 and can be said to be rigid because it is a portion fixed to the panel main body 20. On the other hand, since the central portion of the protective glass 40 is a thin plate portion having a substantially constant thickness and is a portion not directly fixed to the panel body 20, its rigidity is low compared to the outer edge portion. It can be said. In this embodiment, since the vibrating sheet 50 is provided at the central portion of the protective glass 40, ie, the portion with low rigidity in the protective glass 40, compared to the case where the vibrating sheet 50 is provided at the outer peripheral portion with high rigidity, The vibrating sheet 50 can forcibly vibrate the protective glass 40 with less energy.

  In addition, the meter panel 15 (especially, the central portion of the protective glass 40) is arranged to be easily viewable by the driver seated on the driver's seat 12, and is thus suitable for generating voice information directed to the driver. It can be said that it is a part. In the present embodiment, the vibrating sheet 50 is provided at the central portion of the protective glass 40.

As described above, according to the present embodiment, the effects described below can be obtained.
(1) The vibrating sheet 50 capable of forcibly vibrating the protective glass 40 is provided on the surface of the protective glass 40. Therefore, the dust D attached to the surface of the protective glass 40 can be removed in a mode that does not cause deterioration in the appearance of the protective glass 40.

  (2) The vibration sheet 50 functions as a superdirective speaker. Therefore, the dust D on the surface of the protective glass 40 can be removed in a state where the driver hardly notices, each time the vibrating sheet 50 is operated to transmit voice information.

  (3) The vibration seat 50 which functions as a superdirective speaker is provided on the meter panel 15 in front of the driver's seat 12. Therefore, the vibration seat 50 can be used as a speaker for transmitting voice information only to the driver's seat 12.

  (4) Although the vibrating sheet 50 is attached to the outer surface of the protective glass 40, most of the vibrating sheet 50 is in the form of a transparent sheet. It can be made the structure which 50 does not become obstructive easily. Thereby, the vibrating sheet 50 can be arranged with high degree of freedom with respect to the surface of the protective glass 40.

  (5) The vibrating sheet 50 is provided at the central portion of the protective glass 40, that is, the portion with low rigidity in the protective glass 40. Therefore, as compared with the case where the vibrating sheet 50 is provided on the rigid outer edge portion of the protective glass 40, the vibrating sheet 50 can forcibly vibrate the protective glass 40 with less energy.

<Modification>
The above embodiment may be modified as follows.
The electrode 52 and the wiring 53 may be formed of a transparent material (for example, indium tin oxide [ITO]). According to such a configuration, the vibrating sheet 50 can be made less likely to interfere with visual observation of the instrument panel 30, so that the vibrating sheet 50 can be disposed with a higher degree of freedom with respect to the surface of the protective glass 40. become able to. Moreover, according to such a configuration, it is also possible to make the whole of the vibrating sheet 50 into a transparent sheet shape.

The shape of the film portion 51 of the vibrating sheet 50 is not limited to a rectangle, and may be changed to any shape such as a square, a circle, or an ellipse.
The mounting position of the vibrating sheet 50 on the protective glass 40 can be arbitrarily changed. For example, the vibrating sheet 50 is attached to the protective glass 40 so that a part of the vibrating sheet 50 hangs on the outer edge portion of the protective glass 40 or the annular vibrating sheet 50 extending along the outer edge portion of the protective glass 40 It can be attached. In addition, it is also possible to attach the vibration sheet 50 to the inner surface (surface on the side of the instrument panel 30) of the protective glass 40, and the like. In order to transmit voice information to the occupant through the operation of the vibrating sheet 50, the vibrating sheet 50 is preferably attached to the outer surface of the protective glass 40, that is, the surface on the occupant side.

The film portion 51 of the protective glass 40 and the vibrating sheet 50 is not limited to the colorless and transparent one, and may be colored and transparent (black transparent, blue transparent, etc.).
In the case where the vibrating sheet 50 is provided at a position that does not interfere with visual observation of the instrument panel 30, the film portion 51 of the vibrating sheet 50 may be opaque.

  The configuration of the vibrating sheet 50 can be arbitrarily changed. As the vibrating sheet, for example, one having a structure in which a vibrating actuator (such as a piezoelectric element) is attached to a vibrating plate (such as a plate glass or a metal plate) can be employed.

As the voice information emitted from the vibration sheet, any information such as a warning sound (buzzer), road information, music, and the like can be adopted in addition to the announcement of the content prompting attention.
The vibrating sheet may not function as a superdirective speaker but function as a speaker having a relatively low directivity of emitted sound.

The internal space of the meter panel 15 may function as a rear room of the speaker.
The vibration sheet may not function as a speaker. With this configuration as well, dust attached to the surface of the protective glass 40 can be removed in a manner that does not cause deterioration in the appearance of the protective glass 40 by forcibly vibrating the protective glass 40 by the operation of the vibrating sheet. . In the above configuration, it is desirable that the vibrating sheet be capable of forcibly vibrating the protective glass 40 at a predetermined constant frequency (frequency suitable for removing dust).

  The vibrating sheet according to the above-described embodiment includes any display device (such as an instrument panel or a liquid crystal display) for displaying information and any in-vehicle device including a transparent resin material and a protective glass disposed to cover the display portion. It can apply. Such in-vehicle devices include an operation panel for an air conditioner provided on an instrument panel, an audio device, and a center control panel disposed so as to occupy substantially the entire central portion of the instrument panel in the vehicle width direction. The operation panel etc. for the back seat provided in a console can be mentioned. When a vibration sheet that functions as a superdirective speaker is provided in a vehicle-mounted device other than the meter panel, the target for transmitting voice information may be an occupant seated in the front passenger seat or an occupant seated in the rear seat, etc. The audio information can be transmitted only to a specific range (such as a front passenger seat or a rear seat) according to the arrangement of the in-vehicle device.

  FIG. 5 shows an operation panel 60 for an air conditioner provided on an instrument panel as an example of such an on-vehicle apparatus. As shown in FIG. 5, the liquid crystal display 62 is attached to the inside of the operation panel main body 61 in such a manner that the display surface can be viewed from the outside (in the vehicle compartment). A protective glass 63 is attached to the operation panel main body 61 so as to cover the display surface of the liquid crystal display 62. Various operation switches 64 are provided on the outer wall of the operation panel main body 61. A transparent sheet-like vibrating sheet 65 is attached to the outer surface of the protective glass 63. The operation panel 60 has a structure capable of forcibly vibrating the protective glass 63 by operating the vibrating sheet 65.

  11: Vehicle compartment, 12: Driver's seat, 13: Passenger seat, 14: Instrument panel, 15: Meter panel, 16: Meter cluster panel, 17: Electronic control unit, 20: Panel body, 21: Peripheral wall, 22: Bottom Wall, 23 engagement recess, 24 flange portion, 30 instrument panel, 31 speedometer, 32 tachometer, 33 fuel meter, 34 trip meter, 40 protective glass, 41 annular wall, 43 ... engaging claw, 50 ... vibrating sheet, 51 ... film part, 52 ... electrode, 53 ... wiring, 60 ... operation panel, 61 ... operation panel main body, 62 ... liquid crystal display, 63 ... protective glass, 64 ... operation switch, 65 ... vibrating sheet.

Claims (6)

In a vehicle-mounted device provided with a display unit for displaying information and a protective glass formed of a transparent resin material and disposed so as to cover the display unit.
An on-vehicle device characterized in that the protective glass is provided with a vibrating portion capable of forcibly vibrating the protective glass. The in-vehicle device according to claim 1, wherein the vibration unit functions as a speaker. The on-vehicle device according to claim 2, wherein the speaker is a superdirective speaker that generates a sound using an ultrasonic wave. The vehicle-mounted device according to any one of claims 1 to 3, wherein the vibration portion is provided on the outer surface of the protective glass in the form of a transparent sheet for the most part. The outer peripheral portion of the protective glass is fixed to the main body of the in-vehicle device,
The in-vehicle device according to claim 4, wherein the vibration unit is provided at a central portion surrounded by the outer edge portion of the protective glass. The in-vehicle device according to any one of claims 1 to 5, wherein the in-vehicle device is a meter panel provided in front of a driver's seat.