JP2010042797A - Information providing device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information providing device for a vehicle, which can achieve an improvement in the acoustic characteristic of a means for providing a user with auditory information. <P>SOLUTION: The information providing device for the vehicle is provided with an auditory information providing means 220 for providing a user with auditory information corresponding to various states of the vehicle, a circuit board 301 comprising a control means 202 for controlling the auditory information providing means 220, and a cover member 311 provided on the back side of the circuit board 301 so that a speaker 223 provided in the auditory information providing means 220 is disposed therein. A space portion S1 surrounded with the circuit board 301, the cover member 311, and the speaker 223 is used as a sound emission space into which a flowing sound emitted from one side P1 of the speaker 223 is released, and an opening 324 that communicates with the space portion S1 is formed in the cover member 311. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an information providing apparatus for a vehicle that provides various information to a user using an auditory information providing means including at least a sounding means such as a speaker or a buzzer.

2. Description of the Related Art Conventionally, in an information providing device for a vehicle provided with this type of auditory information providing means, for example, an auditory information is provided on the back surface of a circuit board located behind a display means comprising a pointer-type display unit mounted in a vehicle meter. An alarm buzzer (sounding means) that is an information providing means is attached, and when the driver (user) does not wear a seat belt, the buzzer is sounded. The alarm (sounding) sound of the buzzer is An instrument panel (hereinafter referred to as instrument panel) that is transmitted to the back of the vehicle instrument through a plurality of slits (holes) provided in the bottom wall portion of the cover that covers the back, and then stores the vehicle instrument. The reflection was repeated inside and transmitted to the user side. Specifically, the alarm sound is a sound leaked from a gap between the vehicle instrument and the instrument panel or a sound leaked from the user's feet or the like through another gap provided inside the instrument panel. (For example, refer to Patent Document 1 below).
Utility Model Registration No. 3094073

However, in the case of the vehicle information providing apparatus described in Patent Document 1, the buzzer sound (alarm sound) transmitted to the back of the vehicle instrument through the slit provided in the cover bottom wall portion is the vehicle instrument and the instrument panel. Since the reflection is repeated in the gap, the interference and transmission of the buzzer sound change according to the shape of the instrument for the vehicle and the instrument panel. As a result, even if the same buzzer sound was emitted from the vehicle instrument, the user could hear different sound pressure and sound quality depending on the vehicle type. In addition, since the sound inherently deteriorated (altered) with respect to the sound of the buzzer is inevitably transmitted to the user, the sound pressure of the alarm sound is insufficient. However, there is a problem that the sound quality of the alarm sound is deteriorated, and there is still room for further improvement in this respect.
SUMMARY OF THE INVENTION In order to address the above-described problems, an object of the present invention is to provide a vehicle information providing apparatus that can improve the acoustic characteristics of an auditory information providing unit for a user.

  The present invention is a vehicle information providing apparatus for notifying a user of predetermined information, and controls the auditory information providing means for providing auditory information according to various states of the vehicle to the user, and the auditory information providing means. A circuit board having a control means for controlling and a cover member provided on the back side of the circuit board to dispose the sounding means provided in the auditory information providing means, and the circuit board, the cover member, and the sounding sound The space surrounded by the means is used as a sound emission space for the sound generated from one side of the sounding means, and the cover member is formed with an opening communicating with the space. .

  In the present invention, the circuit board, the cover member, and the blowing means are provided with a sealed space portion different from the space portion, and the other side of the blowing means that is opposite to the one side. It is characterized by a sound emission space for anti-phase sound generated from the sound.

  Further, the present invention is provided in the cover member so as to be spaced apart from the first wall portion provided in the cover member so as to be separated from the circuit board, and to be in contact with the circuit board. The space portion and the sealed space portion are partitioned by a second wall portion and the blowing means interposed between the first wall portion and the second wall portion. To do.

  Further, the invention is characterized in that a vibration isolating member is interposed between the second wall portion and the circuit board.

  Further, the invention is characterized in that the opening is formed in a side wall of the cover member.

  Further, the present invention is characterized in that a required portion of the first wall portion is brought into contact with the circuit board.

  The present invention is also a vehicle information providing device for notifying a user of predetermined information, the auditory information providing means for providing the user with auditory information according to various states of the vehicle, and the auditory information providing means. A circuit board having a control means for controlling and a heat generating electronic component, and a cover member provided on the back side of the circuit board, wherein the cover member dissipates heat generated from the heat generating electronic component to the outside. And a hole portion for disposing the blowing means so as to output to the outside a blowing sound emitted from one side of the blowing means provided in the auditory information providing means, and the heat radiating hole and the hole portion A protruding wall portion having a function of reducing the amount of passage of the reverse phase sound generated from the other side of the sounding means opposite to the one side to the heat radiating hole. Abut Characterized by comprising formed integrally with the urchin said cover member.

  ADVANTAGE OF THE INVENTION According to this invention, the information provision apparatus for vehicles which can achieve an initial objective and can make the acoustic characteristic of the auditory information provision means with respect to a user favorable can be provided.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows an overview of an example of a vehicle information providing apparatus according to the present embodiment. A vehicle information providing apparatus 100 includes a vehicle meter provided with first and second display means D1 and D2. . The first display means (display unit) D1 is composed of a liquid crystal display panel such as a TFT, an organic EL panel, etc., and is disposed below the center of the vehicle information providing apparatus 100 in FIG. Display.

  The second display means D2 includes a pointer-type display unit having a pointer and an indicator plate, which will be described later, and is a first tachometer disposed on the left side of the vehicle information providing apparatus 100 in FIG. 1, a second pointer type display unit 102 composed of a fuel gauge arranged on the right side of the vehicle information providing apparatus 100 in FIG. 1, and a thermometer arranged on the right side. And a third pointer type display unit 103. In the case of this embodiment, the surface of the indicator plate in each second display means D2 is set to be substantially the same as the display surface of the first display means D1.

  FIG. 2 is a block diagram of the vehicle information providing apparatus 100 of FIG. As its configuration, a vehicle information terminal 210 and a multiplex communication input / output terminal 211 for inputting / outputting vehicle information, a vehicle interface (vehicle I / F) means 201, and a control means 202 for controlling the vehicle information providing apparatus 100. Storage means 203 comprising a ROM or the like for storing the processing program, drive means 204 for performing display control of the display unit D1 and drive control of each pointer type display unit 101, 102, 103, and the various information as auditory information Auditory information providing means 220 for notifying.

  The auditory information providing unit 220 includes a sound / sound synthesis unit 221 that reproduces sound / sound, and an amplifier 222 that amplifies an output signal (sound / sound output signal) from the sound / sound synthesis unit 221. For example, a substantially circular speaker (sounding means) 223 that outputs an amplified signal from the amplifier 222, a space part to be described later, which is a sound emission space of a sound emitted from the speaker 223, and the space part are communicated with each other. It has a slit group (to be described later) for guiding the blowing sound reaching the space part to a passenger compartment (a user driving the vehicle) inside the vehicle.

  In the case of the present embodiment, the speaker 223 includes a top plate having a through-hole portion into which a center pole, which will be described later, is inserted, a back plate having a center pole protruding from the center portion, and the both plates so as to surround the center pole. A magnetic circuit having a ring-shaped magnet sandwiched therebetween, a voice coil disposed in a magnetic gap formed between the center pole and the top plate, and connected to a tip of the voice coil A cone-shaped diaphragm, a magnetic circuit, and a frame that supports the diaphragm at a predetermined position. When a current is passed through the voice coil, a force acts on the voice coil, and the voice A so-called electrodynamic speaker (cone speaker) that emits sound when the diaphragm vibrates in conjunction with the movement of the coil. It is disposed above the first pointer-type display unit 101 of the vehicle information providing device 100 (see FIG. 1).

  FIG. 3 shows a cross-sectional view of the vehicle information providing apparatus 100 (first pointer type display unit 101) along the line AA in FIG. The configuration will be described in detail. The configuration of the second and third pointer type display units 102 and 103 is substantially the same as the configuration of the first pointer type display unit 101, and therefore detailed description thereof is omitted.

  The first pointer-type display unit 101 includes a circuit board 301, a driving device 303 that is conductively attached to the circuit board 301 and has a rotary shaft 302 extending forward, a pointer 304 that is rotationally driven by the rotary shaft 302, and the pointer. An indicator plate 305 disposed behind the 304 and disposed on the circuit board 301, a light source 306 that illuminates the indicator plate 305, a case body 307 that holds the indicator plate 305, a pointer 304 and an indicator plate 305 are provided. A facing member 308 for exposing, a see-through panel 309 disposed on the front side of the facing member 308, and a cover member 311 provided on the back side of the circuit board 301 are configured.

  The circuit board 301 is made of, for example, a hard circuit board in which a wiring pattern (not shown) is provided on a glass epoxy base material, and includes a control means 202 that controls the auditory information providing means 220 and a drive that drives and controls the drive device 303. Means 204, sound / speech synthesis means 221, amplifier 222, light source 306, and various circuit components (not shown) such as resistors and capacitors are conductively connected to the wiring pattern. In this example, the speaker 223 described above is electrically connected to the amplifier 222 via a predetermined wiring member.

  The driving device 303 is composed of a movable magnet type instrument or a stepping motor, and is attached to the back of the circuit board 301 on the cover member 311 side and soldered so that the rotating shaft 302 penetrates the circuit board 301. The wiring pattern (driving unit 204) is electrically connected to the wiring pattern by a suitable conducting unit.

  The pointer 304 is made of synthetic resin, and includes an instruction portion 304a that extends linearly so as to indicate an index portion described later of the index plate 305, and a pointer cap 304b that covers the rotation center portion of the instruction portion 304a.

  The indicator plate 305 is made of a synthetic resin such as PC and is formed in a substantially thin plate shape, and an indicator portion 305a made of scales, numbers, etc. indicated by the indicator portion 304a is formed on the surface thereof. In this case, the indicator portion 305a is arranged in an arc shape along the rotation trajectory (operation range) of the pointer 304.

  The light source 306 is, for example, a chip-type light emitting diode that emits white light, and is a light emitter that is mounted on the front surface of the circuit board 301 on the side opposite to the cover member 311 and emits the indicator portion 305a in white.

  The case body 307 is made of, for example, white synthetic resin, and is located between the circuit board 301 and the indicator plate 305. The case body 307 functions as a holding member that holds the indicator plate 305, and illuminates light from the light source 306 on the front side. It has a function as a reflecting member that reflects light.

  Note that a plurality of engaging portions (not shown) including claw portions or the like are provided at appropriate positions on the outer peripheral portion of the case body 307, and each of the engaging portions is a plurality of locking portions described later of the cover member 311. The case body 307 and the cover member 311 are fitted and fixed so that the circuit board 301 is held between them.

  The facing member 308 is made of, for example, black synthetic resin, and is provided in front of the indicator plate 305 and includes an opening window 308 a that exposes the pointer 304 and the indicator plate 305.

  The see-through panel 309 is made of a translucent synthetic resin, is formed in a substantially concave shape, and is supported (held) by the facing member 308 so as to cover the opening window 308a of the facing member 308. The pointer 304 and the indicator plate 305 Is configured to be visible (perspective) to the user.

  The cover member 311 is made of, for example, white synthetic resin, is formed in a substantially box shape having an opening on the circuit board 301 side, and has a bottom 312 and a standing wall shape continuously formed from the outer periphery of the bottom 312 to the circuit board 301 side. And a side wall portion 313 that contacts the back surface of the circuit board 301. As a result, a space region S is formed by the circuit board 301, the side wall portion 313, and the bottom portion 312. The shape of the boundary between the bottom 312 and the side wall 313 may be a substantially L shape as shown in FIG. 3 or a curved surface having a predetermined curvature.

  The space area S is used as a storage space for storing the drive device 303, a heat dissipation space for releasing heat generated from the light source 306 through a heat dissipation hole (not shown) to the outside of the vehicle information providing device 100, and will be described in detail later. In this way, it is used as a sound emission space for blowing sounds emitted from the front surface (one side) of the speaker 223 and as a sound emission space for anti-phase sound sounds emitted from the rear surface (the other side) of the speaker 223.

  In the bottom 312 of the cover member 311, FIG. 4 is an enlarged view of the portion B in FIG. 3, FIG. 5 is a front view of the main part of the cover member 311, and FIG. As shown in detail in FIG. 6, a substantially semi-annular first standing wall portion 314 that surrounds a required portion of the speaker 223, and an approximately reverse connection between the end portion of the first wall portion 314 and the side wall portion 313. A second wall which is a substantially semi-annular standing wall portion surrounding the first wall portion 316 having the second standing wall portion 315 having a “C” shape and a portion other than the required portion of the speaker 223. The wall portion 317 is formed so as to protrude toward the front side (circuit board 301 side).

  In this case, the height from the bottom 312 of the second standing wall 315 in the second wall 317 and the first wall 316 is substantially the same as the height of the side wall 313. The height dimension of the first wall part 316 from the bottom 312 of the first standing wall part 314 is set to be slightly smaller than the height dimension of the second standing wall part 315.

  As a result, when the circuit board 301 is brought into contact with the side wall 313 of the cover member 311 as shown in FIG. 3, a first gap 318 is formed between the circuit board 301 and the first standing wall 314. It is like that. This means that the first standing wall portion 314 is integrally provided on the bottom portion 312 so as to be separated from the circuit board 301 by the dimension of the first gap portion 318.

  On the other hand, the second wall portion 317 is formed in a substantially inverted concave shape, and has a substantially semi-annular base portion 319 positioned on the upper side (circuit board 301 side), and a lower side from both ends of the base portion 319 ( And a pair of hanging portions 320 formed on the bottom 312 side (see FIG. 6). As a result, a second gap 321 that is an open space is formed on the lower side of the base 319 and between the pair of hanging portions 320.

  In FIG. 5, reference numeral 322 denotes a minute clearance provided between each hanging portion 320 and the first wall portion 316 located outside each hanging portion 320. Reference numeral 323 denotes a mold punching hole for molding the second wall portion 317, and an opening is formed at the bottom portion 312 corresponding to the second wall portion 317.

  Reference numeral 324 denotes an outer side of the second wall portion 317, and a side wall portion 313 (hereinafter referred to as the first side wall portion 313) positioned between two second standing wall portions 315 formed in a substantially inverted “C” shape. A slit group (opening) provided in the side wall portion 313a. The slit group 324 includes a plurality of slits in parallel with each other and communicates with the space portion. Moreover, each slit which comprises the slit group 324 is formed in the vertical direction in the 1st side wall part 313a, as shown in FIG. The individual slits may be formed only on the first side wall portion 313 a or on the first side wall portion 313 a and a part of the bottom portion 312. The part of the bottom portion 312 referred to here refers to a portion of the bottom portion 312 located between the second wall portion 317 and the first side wall portion 313a.

  With respect to the cover member 311 configured as described above, the substantially circular speaker 223 has a front surface (one side) P1 facing the bottom 312 side of the cover member 311 and a back surface (other side) P2 of the bottom 312. Between the first wall portion 316 (first standing wall portion 314) and the second wall portion 317 (base portion 319), both of which are substantially semi-annular so as to face the opposite side (circuit board 301 side). Intervening. More specifically, the speaker 223 has an upper wall on the upper end side of the first standing wall portion 314 and a base portion facing the front wall P1 so that the front surface P1 (back surface P2) is substantially parallel to the plate surface of the circuit board 301. It is fixed (arranged) between the lower end side inner wall surface of 319.

  Note that any fixing means may be employed as the means for fixing the speaker 223 to the first standing wall portion 314 (the upper inner wall surface) and the base 319 (the lower inner wall surface), for example, the front surface P1 of the speaker 223. A configuration in which the outer peripheral portion P3 which is a place other than the back surface P2, and the upper inner wall surface or the lower inner wall surface is bonded and fixed with a double-sided tape or the like.

  In the cover member 311, a plurality of locking portions (not shown) corresponding to the respective engaging portions of the case body 307 are formed at appropriate positions on the outer peripheral portion excluding an opening described later. Therefore, the cover member 311 is attached to the case body 307 so as to cover the back of the circuit board 301 by engaging the engagement portions of the case body 307 with the engagement portions of the cover member 311. .

  By the way, in the present embodiment, the first standing wall portion 314 formed to protrude from the bottom portion 312 toward the circuit board 301 side so as to be separated from the circuit board 301 in the above-described space region S, while being separated from the bottom section 312. A second wall portion 317 having a base portion 319 formed integrally with the bottom portion 312 so as to contact the circuit board 301 is provided, and the first standing wall portion 314 and the second wall portion 317 (base portion 319) face each other. By adopting a configuration in which the speaker 223 is interposed in the area, the space area S is a space portion S1 that is a sound emission space for the sound emitted from the front surface P1, and a sound emission space for the anti-phase sound generated from the back surface P2. It is partitioned into a certain speaker enclosure (sealed space) S2.

  In other words, the speaker enclosure S2 which is a sealed space different from the space portion S1 and the space portion S1 includes the first standing wall portion 314 formed integrally with the bottom portion 312 so as to be separated from the circuit board 301, and the bottom portion 312. A base portion 319 (second wall portion 317) that is integrally formed with the bottom portion 312 so as to be spaced apart and in contact with the circuit board 301, and a first standing wall portion 314 and a base portion 319 (second wall portion 317). It is configured to be partitioned by a speaker 223 interposed therebetween (see FIG. 4).

  That is, in the space region S, the circuit board 301, the first side wall portion 313a corresponding to the position where the slit group 324 is formed, the bottom portion 312, the first standing wall portion 314, the speaker 223, the base portion 319, and the like. In FIG. 4, the space portion S <b> 1 located on the upper side is a sound emission space for the sound generated from the front surface P <b> 1 of the speaker 223.

  On the other hand, the speaker enclosure S2 different from the space portion S1 includes a peripheral wall portion 313 excluding the circuit board 301, the base portion 319, the speaker 223, the first standing wall portion 314, the bottom portion 312 and the first peripheral wall portion 313a. This is provided at a location (hereinafter referred to as the second peripheral wall portion 313b) and is used as a sound emission space for the anti-phase sound generated from the back surface P2 of the speaker 223. In this embodiment, the base portion 319 is used. And the circuit board 301 are in close contact with each other, and the outer peripheral portion P3 of the speaker 223 is in close contact with the base 319 and the first standing wall portion 314 to form the speaker enclosure S2. Thus, the speaker enclosure S2 is emitted from the back surface P2 and reaches the speaker enclosure S2. The anti-phase sound is not leaked to the space S1 side which is the sound emission space of the sound that is different from the speaker enclosure S2. .

  Therefore, the sound from the speaker 223 (front surface P1) reaching the space S1 is not attenuated by interfering with the antiphase sound coming to the speaker enclosure S2, and the sound pressure is maintained in the state where the sound pressure is maintained. The light passes through the slit group 324 communicating with the space S <b> 1 and is guided to the front side of the circuit board 301. In this case, in the space portion S1, the mold punching hole 323 is formed at the bottom 312 corresponding to the second wall portion 317. However, the present inventor makes the blowing sound from the front surface P1 through the mold punching hole 323. It has been obtained as an experimental result that the passing rate is extremely smaller than the passing rate through the slit group 324.

  As a result, the sound generated from the front surface P1 of the speaker 223 fixed to the cover member 311 passes through the space S1 and the slit group 324 and is transmitted to the outside of the vehicle information providing apparatus 100 on the front side of the circuit board 301. The pressure is guided without being weakened. That is, the sound generated from the front surface P1 of the speaker 223 passes through the space S1 and the slit group 324 in a state where the sound pressure is maintained, and is transmitted (provided) to the user's eyes as auditory information. become.

  In addition, the vehicle information providing apparatus 100 according to the present embodiment is connected to the travel control apparatus 231 and the operation means 232 via the multiple communication line 230 as shown in FIG.

  Next, the operation of the vehicle information providing apparatus 100 will be described. The control means 202 relates to the vehicle status, alarm information, and operation of the auto cruise and lane keep from the vehicle information terminal 210 and the multiplex communication input / output terminal 211 for inputting and outputting vehicle information. Information is obtained, and based on this information, auto cruise, vehicle status notification regarding lane keep, alarm output, guidance for auto cruise, lane keep operation, and answer back are effected through the speaker 223 of the auditory information providing means 220. Sound and voice (and the image of the display unit D1) are used.

  Here, the operation at the time of input of the control means 202 will be described by taking the alarm information as an example. The control unit 202 obtains information about the vehicle from the vehicle information terminal 210 for inputting / outputting vehicle information and the multiplex communication input / output terminal 211, and determines whether there is a warning generation condition based on this information. Here, when the warning condition is detected, the warning information is notified by the sound information and the sound using the auditory information providing means 220, and the display form related to the warning information is displayed by the display unit D1.

  FIG. 7 shows a specific example, and the control means 202 indicates that the detection signal (state signal) indicating that the seat belt is not worn as the state of the vehicle is the vehicle information terminal 210 or the multiplex communication input / output terminal 211. After the sound effect “Pawn”, the auditory information providing means 220 is controlled to output “Please wear your seat belt” by voice.

  Therefore, the sound generated from the speaker 223 (front surface P1) in the auditory information provision unit 220 is not limited to the sound pressure, and the sound pressure does not decrease in the space portion S1 and the slit group 324 communicating with the space portion S1. The user can easily recognize (listen) to the sound effect and the sound by being emitted toward the user's eyes. Here, visual information is also used via the display unit D1.

  As described above, in the present embodiment, the vehicle information providing apparatus 100 that notifies the user of predetermined information, the auditory information providing unit 220 that provides the user with auditory information corresponding to various states of the vehicle, A circuit board 301 having control means 202 for controlling the auditory information providing means 220, and a cover member 311 provided on the back side of the circuit board 301 so as to dispose the speaker 223 provided in the auditory information providing means 220. The space S1 surrounded by the circuit board 301 and the cover member 311 (the bottom 312, the first peripheral wall 313 a, the first standing wall 314, the base 319) and the speaker 223 extends from one side (front surface) P 1 of the speaker 223. A slit group (opening) is provided in the cover member 311 (first peripheral wall portion 313a) and communicates with the space portion S1. ) 324 in which is formed.

  Therefore, the blowing sound emitted from the front surface P1 of the speaker 223 is directed toward the front of the vehicle information providing apparatus 100 through the space S1 and the slit group 324 in a state where the sound pressure is maintained (that is, in front of the user's eyes). Therefore, the sound that the speaker 223 has is originally given to the user as auditory information (for example, warning information) without being deteriorated. A good vehicle information providing apparatus can be provided.

  In the present embodiment, the circuit board 301 and the cover member 311 (the bottom portion 312, the second peripheral wall portion 313 b, the first standing wall portion 314, the base portion 319) and the speaker 223 are different sealed spaces from the space portion S 1. The speaker enclosure S2 is provided, and the speaker enclosure S2 is used as a sound emission space for the reverse phase sound generated from the back surface (the other side) P2 of the speaker 223 opposite to the front surface P1, so that the reverse phase sound is generated from the back surface P2. Since the interference between the blowing sound and the blowing sound emitted from the front surface P <b> 1 is suppressed, the sound pressure of the blowing sound passing through the slit group 324 can be kept good.

  In this embodiment, the first wall portion 316 (first standing wall portion 314) provided on the cover member 311 (bottom portion 312) so as to be separated from the circuit board 301 is separated from the bottom portion 312, and the circuit board 301 is separated. The second wall 317 provided on the cover member 311 (bottom 312) so as to abut against the speaker and the speaker 223 interposed between the first standing wall 314 and the second wall 317 provide a space S1. Since the speaker enclosure S2 is partitioned, the shape of the existing cover member, which is a component of the vehicle information providing device, can be devised to form the speaker enclosure, which is advantageous in terms of cost. .

  Moreover, in this embodiment, the opening part 324 which consists of a some slit is formed in the 1st surrounding wall part 313a in the cover member 311, By this, the blowing sound from the speaker 223 (front surface P1) which reaches space part S1 is produced | generated. It is possible to efficiently guide the circuit board 301 to the front side (the user side).

  In this embodiment, the example in which the opening 324 is formed as a slit group including a plurality of slits has been described. However, the shape of the opening 324 efficiently guides the sound generated from the speaker 223 to the front side of the circuit board 301. It goes without saying that any shape can be adopted if possible.

  In the present embodiment, the example in which the base portion 319 and the circuit board 301 in the second wall portion 317 are in contact with each other has been described. For example, as shown in FIG. It is good also as a structure which interposes the vibration proof member 330 which is a buffer material consisting of a cushioning material etc. between the circuit boards 301. The vibration isolation member 330 has a function of making it difficult for vibration generated when the speaker 223 is driven to be transmitted from the base 319 to the circuit board 301. Thus, by providing the vibration isolation member 330, it is possible to suppress vibration of the circuit board 301 when the speaker is driven.

  In the present embodiment, the single speaker 223 and the wall portions 316 and 317 formed integrally with the cover member 311 so as to fix (arrange) the speaker 223 are the components of the vehicle information providing apparatus 100 shown in FIG. Although an example in which the speaker is disposed above has been described, the speaker 223 and the wall portions 316 and 317 can be disposed at any location in the vehicle information providing apparatus 100 without being limited to the above.

  In addition, although this embodiment demonstrated the case where the blowing sound emitted from the speaker 223 (front surface P1) is transmitted toward the said user's eyes through space part S1 and the slit group 324, for example, a blowing means As an alternative, a buzzer may be used instead of a speaker, and a sound generated by the buzzer may be transmitted to the user.

  In this example, the cover member 311 (bottom 312) is provided with the heat radiating holes for releasing the heat generated from the light source 306 to the outside of the vehicle information providing apparatus 100. By the way, as shown in FIG. 9, for example, when a power supply circuit B1 which is a heat generating electronic component for supplying power to the control means 202 or the like is provided at the back of the circuit board 301 near the speaker 223, this power supply In order to dissipate the heat generated from the circuit B1 to the outside, for example, a heat radiation hole B2 formed of a plurality of slits in parallel with each other must be provided at the bottom 312 facing the power supply circuit B1.

  Here, since the power supply circuit B1 is formed in the vicinity of the position where the speaker 223 is disposed, a part of the reverse phase sound generated from the back surface P2 of the speaker 223 is caused to cause the first gap portion 318 (see FIG. 4) and the heat radiation hole B2 to reach the outside and wrap around the slit group 324 side, the sound generated from the front face P1 of the speaker 223 and passing through the slit group 324 and the antiphase sound There is a possibility that a part of the sound interferes and a deteriorated sound is transmitted to the user.

  Therefore, as shown in FIGS. 9 to 11 as a second modification of the present embodiment, the first standing wall portion 314 that is separated from the circuit board 301 described in the first embodiment and the second abutting on the circuit board 301. The shape of the first wall portion 316 composed of the standing wall portion 315 was changed as follows. Note that the shapes of the cover member 311 and the speaker 223 shown in FIG. 9 correspond to the cross-sectional shape formed by the line DD in FIG. Moreover, FIG. 11 is a figure which shows the 1st wall part 316 when it sees from the arrow F direction in FIG.

  That is, in the above-described embodiment, the two boundary portions between the first standing wall portion 314 and the second standing wall portion 315 (hereinafter, the boundary portion located on the left side in FIG. 10 is referred to as the first boundary portion W1). The boundary portion located on the right side in FIG. 10 is defined as the second boundary portion W2, and both are provided at positions adjacent to the end of the second wall portion 317. Then, the position of the second boundary portion W2 is not the position adjacent to the second wall portion 317, but is set (changed) to the third boundary portion W3 in the vicinity of the lower end portion of the speaker 223 in FIG. Yes.

  In other words, in the second modification, the position of the boundary portion located on the right side of the two boundary portions of the first standing wall portion 314 and the second standing wall portion 315 is the second boundary portion described above. By changing to the above-described third boundary portion W3 instead of W2, the formation region of the first standing wall portion 314 that is separated from the circuit board 301 becomes narrower (about half) than in the case of the above-described embodiment. ), The formation region of the second standing wall portion 315 that contacts the circuit board 301 is widened by the amount that the formation region of the first standing wall portion 314 is narrowed (see FIG. 11). In addition, the required part of the first wall part 316 in claim 6 is a boundary part between the first standing wall part 315 and the side wall part 313 from the third boundary part W3 in FIG. It refers to the first upright wall portion 315 location that reaches W4.

  As described above, since the second standing wall portion 315 in contact with the circuit board 301 extends to the lower end side of the speaker 223 so as to partition the speaker 223 and the sound emission hole B2, the above-mentioned The antiphase sound is generated at 314 first wall portions 314 separated from the circuit board 301 between the first boundary portion W1 and the third boundary portion W3 (that is, the first boundary portion in FIG. 11). The first gap 318 located between the portion W1 and the third boundary portion W3), and reaches the speaker enclosure S2.

  At this time, a part of the anti-phase sound that reaches the speaker enclosure S2 is guided to the sound emission hole B2, but on the right side in FIG. 10 as in the second modification of the present embodiment. The reverse phase sounding that passes through the heat radiating hole B2 when the boundary part between the first standing wall part 314 and the second standing wall part 315 located is set as the third boundary part W3 instead of the second boundary part W2. The amount of sound passing will decrease.

  That is, in the case where the boundary portion between the first standing wall portion 314 and the second standing wall portion 315 located on the right side in FIG. Since there is a gap (that is, the first gap portion 318 employed in the above-described embodiment) between the H.223 and the heat radiation hole B2, the anti-phase sound is actively radiated through the gap. It becomes easy to guide to the hole B2 side. On the other hand, as in the second modified example of the present embodiment, the boundary portion between the first standing wall portion 314 and the second standing wall portion 315 located on the right side in FIG. 10 is the second boundary portion W2. If the third boundary portion W3 is used instead, the anti-phase ringing sound passes through the first gap portion 318 located between the first boundary portion W1 and the third boundary portion W3, so that heat is dissipated. It is configured not to be actively guided to the hole B2 side and to be guided to the heat radiation hole B2 side so that a part of the hole B2 wraps around as shown by an arrow G in FIG.

  According to such a configuration, the amount of passage of the reverse phase sound that passes through the heat dissipation hole B2 is reduced as the reverse phase sound is not actively guided to the heat dissipation hole B2, so that it passes through the heat dissipation hole B2. Thus, the interference between the anti-phase sound that circulates toward the slit group 324 and the sound that is emitted from the speaker 223 (front surface P1) and passes through the slit group 324 is suppressed as much as possible. As a result, the blowing sound emitted from the front surface P1 is transmitted to the user's eyes with the sound pressure maintained to some extent. In this example, the second standing wall portion 315 is in contact with the circuit board 301. However, when a minute clearance of about several millimeters is provided between the second standing wall portion 315 and the circuit board 301. However, it goes without saying that the same effect can be obtained.

  A third modification of the present embodiment shown in FIG. 12 shows an application example to the second modification described above. The third modified example is different from the second modified example described above in that a hole 350 including a substantially circular through hole for disposing the speaker 223 is provided on the bottom 312 of the cover member 311, A bottom portion 312 (cover) is formed so that a protruding wall portion 360 having a standing wall shape having a function of reducing the amount of passage of the anti-phase sound generated through the heat radiation hole B2 between the B2 and the hole portion 350 comes into contact with the circuit board 301. The member 311) is integrally formed. The shape of the hole 350 may be the same shape as the slit group 324 described above instead of the through hole.

  Further, in the third modified example, the first wall portion 316 (first and second standing wall portions 314 and 315) employed in the above-described embodiment according to the provision of the hole portion 350 and the protruding wall portion 360. ), The second wall portion 317, the first and second gap portions 318 and 321, the minute clearance 322, the mold punching hole 323, the slit group 324, and the space portion S1 are eliminated.

  When the thickness of the speaker 223 is thicker than the plate thickness of the bottom portion 312, a cylindrical portion 370 surrounding the hole portion 350 is integrally formed on the bottom portion 312 so as to protrude toward the circuit board 301 as shown in FIG. The speaker 223 is disposed on the cover member 311 by bonding and fixing the outer peripheral portion P3 of the speaker 223 and the inner wall surface of the cylindrical portion 370 with a double-sided tape or the like. In addition, it cannot be overemphasized that the speaker enclosure S2 formed above the protrusion wall part 360 in FIG. 12 and the space area | region formed below the protrusion wall part 360 in FIG.

  The sound generated from the front surface P1 of the speaker 223 disposed in the hole 350 (inside the cylindrical portion 370) provided in the bottom 312 is output to the outside. In the same manner as in the second modification described above, the protruding wall portion 360, which is a standing wall portion integrally formed with the bottom portion 312 so as to contact the circuit board 311, is positioned between the heat radiation hole B 2 and the hole portion 350. (Intervening) prevents the anti-phase sound from being actively guided to the heat radiation hole B2 side, so that interference between the anti-phase sound and the sound is suppressed as much as possible. Thus, the sound of the sound is transmitted to the user's eyes with the sound pressure maintained to some extent. In this example, the protruding wall portion 360 is in contact with the circuit board 301, but even when a minute clearance of about several millimeters is provided between the protruding wall portion 360 and the circuit board 301. Needless to say, similar effects can be obtained.

  The present invention relates to a vehicular information providing apparatus using an auditory information providing means, and is applicable not only to a vehicular instrument that provides vehicle information, but also to a vehicular information providing apparatus such as a multi-display device mounted on a vehicle. is there.

1 is an overview of a vehicle information providing apparatus according to an embodiment of the present invention. It is a block diagram of the information provision device for vehicles by the embodiment. It is AA sectional drawing of FIG. FIG. 4 is an essential part cross-sectional view showing an enlarged B part in FIG. 3. It is a principal part front view of the cover member by the embodiment. It is a figure which shows the 2nd wall part and side wall part of a cover member when it sees from the arrow C direction in FIG. It is a figure showing an example of warning information by the embodiment. It is principal part sectional drawing of the information provision apparatus for vehicles which shows the 1st modification of the embodiment. It is principal part sectional drawing of the information provision apparatus for vehicles which shows the 2nd modification of the embodiment. It is a principal part front view of the cover member which shows the 2nd modification of the embodiment. It is a figure which shows the 1st wall part when it sees from the arrow F direction in FIG. It is principal part sectional drawing of the information provision apparatus for vehicles which shows the 3rd modification of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Information provision apparatus for vehicles 202 Control means 220 Auditory information provision means 223 Speaker (sounding means)
301 circuit board 311 cover member 312 bottom 313 side wall 313a first side wall 313b second side wall 314 first upright wall 315 second upright wall 316 first wall 317 second wall 319 base 324 Slit group (opening)
330 Anti-vibration member P1 Front (one side)
P2 back side (the other side)
S space area S1 space section S2 speaker enclosure (sealed space section)

Claims (7)

A vehicle information providing apparatus for notifying a user of predetermined information,
An audio information providing means for providing the user with audio information according to various states of the vehicle, a circuit board having a control means for controlling the audio information providing means, and a blowing means provided in the audio information providing means are arranged. A cover member provided on the back side of the circuit board so as to be installed,
The space surrounded by the circuit board, the cover member, and the blowing means is a sound emission space for the blowing sound emitted from one side of the blowing means, and the cover member has an opening communicating with the space. An information providing device for a vehicle, characterized in that is formed. The circuit board, the cover member, and the blowing means provide a sealed space portion that is different from the space portion, and the sealed space portion is emitted from the other side of the blowing means that is opposite to the one side. The vehicle information providing apparatus according to claim 1, wherein a sound emission space for blowing sounds is used. A first wall portion provided on the cover member so as to be separated from the circuit board, and a second wall portion provided on the cover member so as to be separated from the bottom portion of the cover member and to be in contact with the circuit board. The space portion and the sealed space portion are partitioned by the blowing means interposed between the first wall portion and the second wall portion. Vehicle information providing device. 4. The vehicle information providing apparatus according to claim 3, wherein a vibration isolating member is interposed between the second wall portion and the circuit board. The vehicle information providing apparatus according to claim 1, wherein the opening is formed in a side wall of the cover member. The vehicle information providing apparatus according to claim 3, wherein a required portion of the first wall portion is configured to abut on the circuit board. A vehicle information providing apparatus for notifying a user of predetermined information,
Auditory information providing means for providing the user with auditory information according to various states of the vehicle, a control means for controlling the auditory information providing means, a circuit board having heat-generating electronic components, and a rear side of the circuit board A cover member,
The cover member is configured to output to the outside a heat radiating hole that dissipates heat generated from the heat-generating electronic component to the outside, and a blowing sound emitted from one side of the blowing means provided in the auditory information providing means. A hole for arranging the blowing means is provided,
A protrusion having a function of reducing the amount of passage of the anti-phase sound generated from the other side of the blowing means that is opposite to the one side to the heat dissipation hole, between the heat dissipation hole and the hole portion. A vehicle information providing device, wherein a wall portion is formed integrally with the cover member so as to abut against the circuit board.

Images