JP2014201214A - Instrument for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an instrument for a vehicle capable of emitting a sound that a vehicle user can clearly hear by improving sound directivity.SOLUTION: An instrument A for a vehicle includes sound emitting means 24, control means for controlling the operation of the sound emitting means 24 in a warning state according to vehicle information, and cases 4 and 5 for accommodating the sound emitting means 24 and the control means. In the instrument A for a vehicle in a state assembled to the vehicle, the sound emitting means 24 is provided either on the right or left in the cases 4 and 5. A reflection surface 52 is formed in the case 5, which faces the sound emitting means 24 and can reflect the sound from the sound emitting means 24 to the right and left sides of the case 5. The reflection surface 52 is formed so that areas of the right side and the left side are different from each other.

Description

  The present invention relates to a vehicular instrument that provides various types of information to a user using a speaker or a buzzer.

  For example, in a vehicle meter, information is displayed to a user with a pointer and an indicator. This vehicle instrument is equipped with a circuit board on which a movement (for example, a motor) for rotating a pointer and a light source for an indicator (for example, a light emitting diode) are mounted and an electric circuit for driving them is configured.

  Furthermore, in addition to the visual indications such as the above-mentioned pointers and indicators, the user can recognize the state of the vehicle by sound using an oscillating member (sounding means) such as a buzzer. It is disclosed in Document 1. In this case, the oscillating member is mounted on the circuit board described above in consideration of the convenience of electrical connection and the distance to the user.

  Further, the oscillating member can output various alarm sounds such as seat belt wearing information and door open state travel, and the alarm sound passes through a plurality of slits provided in a cover covering the back of the circuit board, and the vehicle instrument Then, it is transmitted from the inside of the instrument panel that houses the vehicle instrument to the user side.

Utility Model Registration No. 3094073

  However, in the center of the vehicle meter, there are many cases where a display for driving a pointer or a liquid crystal display panel is provided, and in view of vibrations transmitted to other electronic components via the circuit board, Generally, one oscillating member is provided on either the left or right side of the circuit board. For this reason, in a state where the vehicle instrument is assembled to the vehicle, there may be a case where the user feels audible from either the left or right side, which may give a sense of discomfort to the vehicle user.

  Accordingly, an object of the present invention is to provide a vehicle instrument that can emit a sound that is easy to hear for a vehicle user by improving the sound directivity by paying attention to the above-described problems.

  The vehicle instrument of the present invention includes sound generation means, control means for controlling the operation of the sound generation means in an alarm state according to vehicle information, and a case for housing the sound generation means and the control means. An instrument for a vehicle, wherein the sounding means is provided on either the left or right side of the case when the vehicle instrument is assembled to a vehicle, and the case is opposed to the sounding means, and the sound from the sounding means is provided. The vehicle instrument is characterized in that a reflective surface that can be reflected to both the left and right sides of the case is formed, and the reflective surface is formed with different areas on the left and right.

  In addition, a display device for displaying the vehicle information is provided, and the sound generation means and the reflection surface are provided on the back side of the display device.

  The present invention relates to a vehicular instrument that provides various information to a user using a speaker or a buzzer, etc., and relates to a vehicular instrument that can emit a sound that is easy to hear for a vehicle user by improving sound directivity. It is to provide.

Sectional drawing which shows the vehicle assembly state of the meter for vehicles which is embodiment of this invention. The top view seen from the back side of the instrument for vehicles which is embodiment same as the above. F3-F3 cross-sectional view of FIG. 2 showing the reflecting surface and sound generation means according to the same embodiment.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a vehicle instrument according to the present invention will be described as an embodiment with reference to the accompanying drawings, taking as an example a vehicle instrument mounted on an automobile.

  FIG. 1 shows the main components housed in the housing of the vehicle meter A. The display 1, the circuit board 2, the holding member 3, the first case (case) 4, and the second case ( Case) 5 and provided at the opening of the instrument panel P. 1 shows the F1-F1 cross section of FIG.

  The display 1 can display and output vehicle information such as a traveling speed and an accumulated traveling distance through numerical values and display images such as characters and the like through the window portion of the first case 4. The display device 1 is provided with a liquid crystal display element constituted by a polarizing film provided on the front and rear sides in which liquid crystal is sealed between a pair of glass substrates having transparent electrodes, and driving power is supplied through the transparent electrodes. I try to do it. Note that the display 1 can transmit and illuminate the liquid crystal display element with a backlight (not shown) so that the user can visually recognize it in a dark environment such as at night.

  The circuit board 2 is provided with a control means (electronic component) 21 for inputting a signal from outside the vehicle meter A such as a microcomputer or a drawing processing circuit and driving a liquid crystal display element and a light source of the display 1. Yes. The circuit board 2 is configured so that information from an on-board electronic control unit and various sensors can be transmitted as signals to the microcomputer via the connector 22 and the communication cable 23.

  Further, the circuit board 2 is provided with a sounding means 24 such as a buzzer or a speaker for alerting such as an alarm. In this case, to other electronic components (for example, the control means 21) that vibrate by the sounding means 24. In order to reduce the influence of the circuit board 2, the circuit board 2 is provided in the vicinity of either the left or right end. The sound generation means 24 is driven based on a control signal from the microcomputer, and informs the vehicle user, for example, by a sound of a predetermined pattern or sound when the seat belt is not attached or the door is open. Can do.

  The holding member 3 is a spacer that is molded using a synthetic resin material, is interposed between the display 1 and the circuit board 2, and holds the display 1 and the circuit board 2 at a predetermined interval. The holding member 3 is positioned and held with respect to the circuit board 2 by a projection, a screw fixing hole, a hook or the like (not shown).

  The first case 4 is provided with a transparent window portion (light transmissive member) 41 so that the display output of the display 1 can be seen through, and in this case, the flat window portion 41 and the light shielding composition. By integrally molding the resin, the resin is provided in a shape that partially overlaps the second case 5 and can be fitted from the outside of the second case 5.

  The second case 5 is made of a light-shielding synthetic resin material, and has a hole 51 through which the cable 23 connected to the circuit board 2 is inserted, as shown in FIGS. By fitting and holding the first case 4 with screws (not shown), a storage space for the display 1 and the circuit board 2 can be obtained.

  As shown in FIG. 3, the second case 5 is provided with a reflecting surface 52 at a location facing the sound generation means 24. The reflecting surface 52 reflects a sound output from the sound generation means 24 to the back side of the vehicle meter A, a left reflecting surface 52a that reflects in the left direction of the vehicle meter A, and a right reflecting surface 52b that reflects in the right direction. Is formed by a surface inclined with respect to the sound generating means 24. The sound reflected by the reflecting surface 52 passes through the slit 53 and is transmitted to the back side of the vehicle meter A.

  Further, the left reflecting surface 52a and the right reflecting surface 52b of the reflecting surface 52 are formed with different areas. In this case, since the sound generation means 24 is provided on the right side of the vehicle meter A, the area of the left reflection surface 52b is larger than that of the right reflection surface 52a so that sound is easily transmitted to the left side. This area ratio is set so that the sound volume transmitted to both the left and right sides is close, and can be shaped in consideration of the position of the sound generating means 24 that has a particularly large influence and the position of an obstacle for sound transmission.

  In particular, the reflecting surface 52 is a member that reverberates opposite the sound generating member 24, has a large influence on adjusting directivity, and is effective for adjusting the volume to the left and right. If the sound generator 24 is provided on the left side when the vehicle meter A is attached, the right and left volume levels are increased by increasing the area of the right reflective surface rather than the left reflective surface so that sound is easily transmitted to the right side. The difference can be reduced. The vehicle user feels as if the sound is emitted from the entire vehicle meter A, and can view the pronunciation without a sense of incongruity, so that the vehicle meter A is highly productive.

  Further, the reflective surface 52 is formed in a substantially circular shape when viewed from the back side, and a reflective shape in which the left and right reflective areas are different by forming an eccentric cone-shaped reflective surface whose vertex is not the center of the substantially circular shape. The apex position can be set in accordance with the position of the sound generation means 24 in the vehicle meter A. In this case, in the state where the vehicle meter A is assembled to the vehicle, not only can sound be efficiently output over the entire circumference, but also volume adjustment in the vertical direction is possible.

  Such a vehicle meter A includes a sounding means 24, a control means for controlling the operation of the sounding means 24 in an alarm state according to vehicle information, and cases 4, 5 for housing the sounding means 24 and the control means. The sound generator 24 is provided on either the left or right of the cases 4 and 5 when the vehicle instrument A is assembled to the vehicle, and the case 5 is opposed to the sound generator 24. Then, the reflection surface 52 capable of reflecting the sound from the sound generating means 24 to both the left and right sides of the case 5 is formed, and the reflection surface 52 is formed with different areas on the left and right.

  Therefore, the directivity of the sound is improved by the reverberation of the reflecting surface 52, and the sound can be output as if it is sounded from the entire vehicle meter A. Therefore, the vehicle meter capable of generating a sound that is easy to hear for the vehicle user. Become.

  Moreover, since the display 1 which displays vehicle information is provided and the sound generation means 24 and the reflection surface 52 are provided on the back side (back side) of the display 1, the space behind the vehicle meter A far from the vehicle user is provided. You can adjust left and right volume.

  Although the vehicular instrument of the present invention has been described as an example in the configuration of the above-described embodiment, the present invention is not limited to this, and other configurations depart from the gist of the present invention. It goes without saying that various improvements and display changes can be made without departing from the scope. As shown in FIG. 2, the slit 53 has the same shape on the entire circumference of the vehicle instrument A at equal intervals. Sound that leaks in the direction can be reduced. In particular, in a meter whose left and right sides are longer than the top and bottom, the deviation of the left and right sounds can be greatly reduced.

  Further, not only the area of the reflecting surface 52 is varied on the left and right, but also the volume of the output can be adjusted to be larger by varying the size of the slit (size of the opening through which the sound passes) on the left and right sides.

  In the above-described embodiment, the display 1 uses a liquid crystal display element or a backlight. For example, a pointer that rotates based on a measured value such as a vehicle speed by control by a control unit; It is also possible to use a pointer-type display unit that performs comparative reading with an index unit such as a scale or numerical display that is the target of the pointer. In this case, the sound generation means 24 is often provided on the end side of the circuit board 2 at a distance from the pointer shaft so that the vibration of the sound generation means 24 is not easily transmitted to the pointer, and the above-described invention is effective. .

  INDUSTRIAL APPLICABILITY The present invention can be applied to a vehicle instrument that is mounted on a mobile body and displays various types of information, for example, as an instrument mounted on a mobile body equipped with an automobile, a motorcycle, an agricultural machine, or a construction machine.

DESCRIPTION OF SYMBOLS 1 Indicator 2 Circuit board 21 Control means 24 Sounding means 3 Holding member 4 1st case (case)
5 Second case (case)
52 Reflecting surface 53 Slit

Claims (2)

Pronunciation means;
Control means for controlling the operation of the sounding means in an alarm state according to vehicle information;
A vehicular instrument comprising a case housing the sounding means and the control means,
The sound generation means is provided on either the left or right side of the case when the vehicle instrument is assembled to the vehicle,
The case is formed with a reflecting surface facing the sounding means and capable of reflecting sound from the sounding means to both the left and right sides of the case, and the reflecting surfaces are formed with different areas on the left and right. Vehicle instrument. A display for displaying the vehicle information;
The vehicle instrument according to claim 1, wherein the sound generation unit and the reflection surface are provided on a back side of the display.

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