JP2009260910A

JP2009260910A - Information providing device for vehicle

Info

Publication number: JP2009260910A
Application number: JP2008230402A
Authority: JP
Inventors: Shigeaki Tamura; 繁明田村
Original assignee: Nippon Seiki Co Ltd
Current assignee: Nippon Seiki Co Ltd
Priority date: 2008-03-17
Filing date: 2008-09-09
Publication date: 2009-11-05

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information providing device for a vehicle, which improves acoustic characteristics of hearing information providing means with respect to a user. <P>SOLUTION: The information providing device for a vehicle that notifies a user of predetermined information includes: a circuit board 301 including an hearing information providing means 220 for providing hearing information corresponding to various states of the vehicle for the user, and a control means 202 for controlling the hearing information providing means 220; and a cover member 311 disposed at the back of the circuit board 301. The hearing information providing means 220 includes: a speaker 223 disposed on the back of the circuit board 301, and a sound guide section 224 integrally formed in the cover member 311 so as to guide a sound emitted from the speaker 223 to the side of the circuit board 301. A sound absorbing member 320 is disposed on the inner wall surface of a second peripheral wall part 312b in the sound guide section 224. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、例えばスピーカやブザーのごとき吹鳴手段を少なくとも備えた聴覚情報提供手段を用いて利用者に各種情報を提供する車両用情報提供装置に関する。 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.

従来、この種の聴覚情報提供手段を備えた車両用情報提供装置にあっては、例えば車両用計器内に搭載された指針式表示部からなる表示手段の背後に位置する回路基板の裏面に聴覚情報提供手段である警報用のブザー（吹鳴手段）を取り付け、ドライバー（利用者）がシートベルトを装着していない場合には前記ブザーを鳴らし、前記ブザーの警報（吹鳴）音は前記回路基板の背後を覆うカバーに設けた複数のスリット（孔）を通って前記車両用計器の背後へ伝えられ、その後、前記車両用計器を収納するインストルメントパネル（以下、インパネと言う）の内部で反射を繰り返して前記利用者側に伝わるようになっていた。具体的には、前記警報音は前記車両用計器と前記インパネとの隙間から漏れた音あるいは前記インパネ内部に設けられた別の隙間を通り前記利用者の足下等から漏れた音として前記利用者に伝わる構成であった（例えば下記特許文献１参照）。
実用新案登録第３０９４０７３号公報 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 It is transmitted to the back of the vehicle instrument through a plurality of slits (holes) provided in the cover that covers the back, and then reflected inside the instrument panel (hereinafter referred to as the instrument panel) that houses the vehicle instrument. Repeatedly 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. (See, for example, Patent Document 1 below).
Utility Model Registration No. 3094073

しかしながら、特許文献１に記載の車両用情報提供装置の場合、カバーのスリットを通って車両用計器の背後へ伝えられるブザー音（警報音）は、前記車両用計器と前記インパネの隙間で反射を繰り返すため、前記車両用計器と前記インパネの形状に応じて前記ブザー音の干渉、及び伝わり方が変わっていた。この結果、前記車両用計器から同じブザー音を発しても、前記利用者には車種により異なる音圧、音質として聞こえていた。また、前記利用者には、元来、前記ブザーが持っている音に対して劣化（変質）した音（前記警報音）が必然的に伝わることから、前記警報音の音圧が不足してしまう、もしくは前記警報音の音質が悪化してしまうという問題があり、車両用情報提供装置における聴覚情報提供手段の更なる改良の余地が残されていた。
そこで本発明は、前述の課題に対して対処するため、利用者に対する聴覚情報提供手段の音響特性を良好にすることが可能な車両用情報提供装置の提供を目的とするものである。 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 of the cover is reflected in the gap between the vehicle instrument and the instrument panel. In order to repeat, the interference and transmission method of the buzzer sound changed 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 the sound pressure and sound quality different 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. Or there is a problem that the sound quality of the warning sound is deteriorated, and there is room for further improvement of the auditory information providing means in the vehicle information providing apparatus.
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.

本発明は、利用者に所定情報を報知する車両用情報提供装置であって、前記利用者に車両の各種状態に応じた聴覚情報を提供する聴覚情報提供手段と、前記聴覚情報提供手段を制御する制御手段を有する回路基板と、前記回路基板の背後に配設されるカバー部材とを備え、前記聴覚情報提供手段は、少なくとも前記回路基板の背面に配設された吹鳴手段と、前記吹鳴手段から発せられる音を前記回路基板側に導くように前記カバー部材に一体形成された導音部とを備えてなり、前記導音部における内壁面の所定箇所に吸音部材を配設してなることを特徴とする。 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 disposed behind the circuit board, wherein the auditory information providing means includes at least a sounding means disposed on a back surface of the circuit board, and the sounding means And a sound guide part integrally formed with the cover member so as to guide the sound emitted from the circuit board to the circuit board side, and a sound absorbing member is disposed at a predetermined position on the inner wall surface of the sound guide part. It is characterized by.

また本発明は、利用者に所定情報を報知する車両用情報提供装置であって、前記利用者に車両の各種状態に応じた聴覚情報を提供する聴覚情報提供手段と、前記聴覚情報提供手段を制御する制御手段を有する回路基板と、前記回路基板の背後に配設されるカバー部材とを備え、前記聴覚情報提供手段は、少なくとも前記回路基板の背面に配設された吹鳴手段と、前記吹鳴手段から発せられる音を前記回路基板側に導くように前記カバー部材に一体形成された導音部とを備えてなり、前記導音部における内壁面の所定箇所に曲面部を形成してなることを特徴とする。 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 control means for controlling; and a cover member disposed behind the circuit board, wherein the auditory information providing means includes at least a sounding means disposed on a back surface of the circuit board; And a sound guide portion integrally formed with the cover member so as to guide the sound emitted from the means to the circuit board side, and a curved surface portion is formed at a predetermined position on the inner wall surface of the sound guide portion. It is characterized by.

また本発明は、利用者に所定情報を報知する車両用情報提供装置であって、前記利用者に車両の各種状態に応じた聴覚情報を提供する聴覚情報提供手段と、前記聴覚情報提供手段を制御する制御手段を有する回路基板と、前記回路基板の背後に配設されるカバー部材とを備え、前記聴覚情報提供手段は、少なくとも前記回路基板の背面に配設された吹鳴手段と、前記吹鳴手段から発せられる音を前記回路基板側に導くように前記カバー部材に一体形成された導音部とを備えてなり、前記導音部の底壁部に孔部を形成してなることを特徴とする。 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 control means for controlling; and a cover member disposed behind the circuit board, wherein the auditory information providing means includes at least a sounding means disposed on a back surface of the circuit board; And a sound guide part integrally formed with the cover member so as to guide the sound emitted from the means to the circuit board side, and a hole is formed in the bottom wall part of the sound guide part. And

本発明によれば、初期の目的を達成でき、利用者に対する聴覚情報提供手段の音響特性を良好にすることが可能な車両用情報提供装置を提供できる。 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.

（第１実施形態）以下、添付図面に基づいて本発明の第１実施形態を説明する。 (First Embodiment) A first embodiment of the present invention will be described below with reference to the accompanying drawings.

図１は、本実施形態における車両用情報提供装置の一例の概観図を示すもので、車両用情報提供装置１００は、第１，第２の表示手段Ｄ１，Ｄ２を備えた車両用メータからなる。第１の表示手段（表示部）Ｄ１は、ＴＦＴ等の液晶表示パネルや有機ＥＬパネル等からなり、図１中、車両用情報提供装置１００の中央下方に配設され、車速を含む各種情報の表示を行うものである。 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.

また第２の表示手段Ｄ２は、後述する指針と指標板とを備えた指針式表示部からなり、図１中、車両用情報提供装置１００の左方に配設された回転計からなる第１の指針式表示部１０１と、図１中、車両用情報提供装置１００の右方に配設された燃料計からなる第２の指針式表示部１０２と、温度計からなる第３の指針式表示部１０３とから構成される。また本実施形態の場合、各第２の表示手段Ｄ２における前記指標板の表面は、第１の表示手段Ｄ１の表示面と略同一面となるように設定されている。 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 disposed on the right side of the vehicle information providing apparatus 100 in FIG. 1, and a third pointer-type display composed of a thermometer. Part 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.

図２は、図１の車両用情報提供装置１００のブロック図である。その構成としては、車両情報の入出力を行う車両情報端子２１０及び多重通信入出力端子２１１と、車両インターフェース（車両Ｉ／Ｆ）手段２０１と、車両用情報提供装置１００の制御を行う制御手段２０２と、処理プログラムを格納するＲＯＭ等からなる記憶手段２０３と、表示部Ｄ１の表示制御及び各指針式表示部１０１，１０２，１０３の駆動制御を行う駆動手段２０４と、前記各種情報を聴覚情報として報知する聴覚情報提供手段２２０とを有している。 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.

また、聴覚情報提供手段２２０の構成としては、音／音声を再生する音／音声合成手段２２１と、この音／音声合成手段２２１からの出力信号（音／音声出力信号）を増幅するアンプ２２２と、このアンプ２２２からの増幅信号を出力する例えば略円形のスピーカ（吹鳴手段）２２３と、このスピーカ２２３から発せられる音を後述する間隙を通じて車両内部である車室（車両を運転する利用者）に導く導音部２２４とを有している。 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 and a sound emitted from the speaker 223 are transmitted to a passenger compartment (a user who drives the vehicle) inside the vehicle through a gap described later. And a sound guide portion 224 for guiding.

スピーカ２２３は、本実施形態の場合、後述するセンターポールが挿入される貫通孔部を有するトッププレートと中央部に突出形成されたセンターポールを有するバックプレートと前記センターポールを取り巻くように前記両プレート間に狭持されたリング状マグネットとを備えた磁気回路と、前記センターポールと前記トッププレートとの間に形成される磁気空隙内に配設されるボイスコイルと、このボイスコイルの先端に連結されるコーン型の振動板と、前記磁気回路と前記振動板を所定の位置に支持するフレームとから主に構成され、前記ボイスコイルに電流を流すと前記ボイスコイルに力が作用し、前記ボイスコイルの動きに連動して前記振動板が振動することによって音を発する、所謂、動電型スピーカ（コーンスピーカ）からなり、車両用情報提供装置１００における第３の指針式表示部１０３の下方に配設される（図１参照）。 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 below the third pointer-type display unit 103 of the vehicle information providing device 100 (see FIG. 1).

図３は、図１中、Ａ−Ａ線に沿った車両用情報提供装置１００（第３の指針式表示部１０３）の断面図を示しており、以下、第３の指針式表示部１０３の構成について詳細説明を行う。なお、第１，第２の指針式表示部１０１，１０２の構成は、第３の指針式表示部１０３の構成と略同一であるため、その詳細な説明は省略する。 FIG. 3 shows a cross-sectional view of the vehicle information providing apparatus 100 (third pointer type display unit 103) along the line AA in FIG. The configuration will be described in detail. Since the configuration of the first and second pointer type display units 101 and 102 is substantially the same as the configuration of the third pointer type display unit 103, detailed description thereof will be omitted.

第３の指針式表示部１０３は、回路基板３０１と、この回路基板３０１に導通装着され回転軸３０２が前方に延びる駆動装置３０３と、回転軸３０２にて回転駆動される指針３０４と、この指針３０４の背後に位置して回路基板３０１上に配設される指標板３０５と、この指標板３０５を照明する光源３０６と、指標板３０５を保持するケース体３０７と、指針３０４や指標板３０５を露出させるための見返し部材３０８と、この見返し部材３０８の前方側に配置される透視パネル３０９と、この透視パネル３０９の外縁部を隠蔽するバイザー３１０と、回路基板３０１の背面側を覆うカバー部材３１１とから構成される。 The third pointer type display unit 103 includes a circuit board 301, a driving device 303 that is conductively attached to the circuit board 301 and has a rotating shaft 302 extending forward, a pointer 304 that is rotationally driven by the rotating 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 look-back member 308, a visor 310 that conceals the outer edge of the see-through panel 309, and a cover member 311 that covers the back side of the circuit board 301. It consists of.

回路基板３０１は、例えばガラスエポキシ系基材に配線パターン（図示せず）を施した硬質回路基板からなり、聴覚情報提供手段２２０を制御する制御手段２０２と、駆動装置３０３を駆動・制御する駆動手段２０４と、音／音声合成手段２２１と、アンプ２２２と、スピーカ２２３と、光源３０６と、抵抗、コンデンサ等の各種回路部品（図示せず）とが前記配線パターンに導通接続されている。また、回路基板３０１は、その背面に実装されたスピーカ２２３に対応して開口形成された略円形の孔部３０１ａを備えている。 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, speaker 223, light source 306, and various circuit components (not shown) such as resistors and capacitors are connected to the wiring pattern. In addition, the circuit board 301 includes a substantially circular hole 301a formed in an opening corresponding to the speaker 223 mounted on the back surface thereof.

駆動装置３０３は、可動磁石式計器またはステッピングモータからなり、回転軸３０２が回路基板３０１を貫通するように、その主要部がカバー部材３１１側となる回路基板３０１の背後に装着され、且つ半田付け等の適宜導通手段により前記配線パターン（駆動手段２０４）に電気接続される。 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.

指針３０４は、合成樹脂からなり、指標板３０５の後述する指標部を指示するように線状に延びる指示部３０４ａと、この指示部３０４ａの回転中心部を覆うカバー（指針キャップ）３０４ｂとを備えている。 The pointer 304 is made of a synthetic resin, and includes an instruction portion 304a that extends linearly so as to indicate an indicator portion (described later) of the indicator plate 305, and a cover (pointer cap) 304b that covers the center of rotation of the indicator portion 304a. ing.

指標板３０５は、ＰＣ等の合成樹脂からなり、略薄板状に形成され、その表面には指示部３０４ａの指示する目盛，数字等からなる指標部３０５ａが形成されている。この場合、指標部３０５ａは指針３０４の回転軌道に沿って円弧状に配列されている。 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 along the rotation trajectory of the pointer 304.

光源３０６は、例えば白色光を発するチップ型発光ダイオードからなり、カバー部材３１１とは反対側となる回路基板３０１の前面に実装され、指標部３０５ａを白色に発光させる発光体である。 The light source 306 is, for example, a chip-type light emitting diode that emits white light, is mounted on the front surface of the circuit board 301 on the side opposite to the cover member 311, and is a light emitter that emits the indicator portion 305 a in white.

ケース体３０７は、例えば白色の合成樹脂からなり、回路基板３０１と指標板３０５との間に位置しており、指標板３０５を保持する保持部材としての機能、光源３０６からの照明光を前方側に反射する反射部材としての機能等を有している。 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.

なお、３０７ａは、ケース体３０７に設けた例えば円筒カップ型の凹部３０７ｂと回路基板３０１とによって囲まれた密閉空間であり、この密閉空間３０７ａは、回路基板３０１の孔部３０１ａに連通しており、孔部３０１ａに隣接して配設されるスピーカ２２３のエンクロージャーとして作用する。 Reference numeral 307a denotes a sealed space provided in the case body 307 and surrounded by, for example, a cylindrical cup-shaped recess 307b and the circuit board 301. The sealed space 307a communicates with the hole 301a of the circuit board 301. , Acting as an enclosure for the speaker 223 disposed adjacent to the hole 301a.

このエンクロージャーである密閉空間３０７ａは、スピーカ２２３の背面（回路基板３０１の孔部３０１ａ）から放射される音の振動空間として利用されることになるが、本実施形態では、密閉空間３０７ａを取り巻く凹部３０７ｂと回路基板３０１とが当接（密着）して密閉空間３０７ａを構成することから、スピーカ２２３の前面（つまり、孔部３０１ａとは反対側の導音部２２４側）から出る音が、スピーカ２２３の前記背面から回り込む音によって打ち消されないようになっている。ここで、前記回り込む音とは、スピーカ２２３の前記背面から出る音が、孔部３０１ａ、密閉空間３０７ａ並びに凹部３０７ｂと回路基板３０１との当接面を介して密閉空間３０７ａ外部に漏れ出る音のことを指す。 The sealed space 307a, which is the enclosure, is used as a vibration space for sound radiated from the back surface of the speaker 223 (the hole 301a of the circuit board 301). In this embodiment, the recessed space surrounding the sealed space 307a is used. Since the closed space 307a is configured by abutting (contacting) 307b and the circuit board 301, the sound emitted from the front surface of the speaker 223 (that is, the sound guide portion 224 side opposite to the hole portion 301a) is transmitted to the speaker. 223 is prevented from being canceled out by the sound coming from the back surface. Here, the sound that wraps around is a sound that is emitted from the back surface of the speaker 223 and leaks to the outside of the sealed space 307a through the contact surface between the hole 301a, the sealed space 307a, and the recess 307b and the circuit board 301. Refers to that.

また、ケース体３０７における外周部の適宜箇所には、爪部等からなる複数の係合部（図示せず）が設けられ、前記各係合部がカバー部材３１１の後述する複数の係止部に各々係止されることで、回路基板３０１を狭持するようにケース体３０７とカバー部材３１１とが嵌合固定されるようになっている。 In addition, 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 the engaging portions are 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.

見返し部材３０８は、例えば黒色の合成樹脂からなり、指標板３０５の前方に配設され、指針３０４と指標板３０５を前記利用者（運転者）にそれぞれ露出する開口窓部３０８ａを備えている。 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 308a that exposes the pointer 304 and the indicator plate 305 to the user (driver).

透視パネル３０９は、透光性合成樹脂からなり、略凹面状に形成され、見返し部材３０８の開口窓部３０８ａを覆うように見返し部材３０８によって支持（保持）されており、指針３０４と指標板３０５を前記利用者に対して視認（透視）可能に構成されている。 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.

バイザー３１０は、例えば黒色の合成樹脂からなり、略筒状に形成され、透視パネル３０９の一部である透視パネル３０９外縁部のみを隠蔽するように透視パネル３０９の前方に配設されている。 The visor 310 is made of, for example, black synthetic resin, is formed in a substantially cylindrical shape, and is disposed in front of the fluoroscopic panel 309 so as to hide only an outer edge portion of the fluoroscopic panel 309 that is a part of the fluoroscopic panel 309.

カバー部材３１１は、例えば白色の合成樹脂からなり、回路基板３０１側が開口する略箱形形状に形成され、駆動装置３０３を収納する収納部材としての機能、図示しない放熱孔を通じて光源３０６から発せられる熱等を車両用情報提供装置１００外部に逃がすための放熱部材としての機能等を有している。 The cover member 311 is made of, for example, white synthetic resin and is formed in a substantially box shape having an opening on the circuit board 301 side. The cover member 311 functions as a storage member for storing the driving device 303, and heat generated from the light source 306 through a heat dissipation hole (not shown). And the like as a heat radiating member for escaping from the vehicle information providing apparatus 100 to the outside.

かかるカバー部材３１１には、図３中、Ｂ部を拡大した図である図４，正面図である図５に詳しく示すようにスピーカ２２３に対応する部分に、周壁部３１２と底壁部（底部）３１３と底壁部３１３とは反対側が開口する開口部３１４とを有する枠体からなり、スピーカ２２３の前面から出る音を前記利用者側に導く導音部２２４が一体形成されている。 The cover member 311 includes a peripheral wall portion 312 and a bottom wall portion (bottom portion) at a portion corresponding to the speaker 223 as shown in detail in FIG. 4 which is an enlarged view of B portion in FIG. ) 313 and the bottom wall portion 313 are formed of a frame having an opening 314 that is open on the opposite side, and a sound guide portion 224 that guides the sound emitted from the front surface of the speaker 223 to the user side is integrally formed.

この導音部２２４の周壁部３１２は、スピーカ２２３を取り巻く略「Ｃ」字状の第１の周壁部３１２ａと、この略「Ｃ」字状の第１の周壁部３１２ａの途切れた部分を繋ぐように、図５中、第１の周壁部３１２ａの下方に延在する略「コ」字状からなる第２の周壁部３１２ｂとを備え、この場合、各周壁部３１２ａ、３１２ｂの高さ寸法は、略同一に設定され、また第２の周壁部３１２ｂは、カバー部材３１１の周囲（外部）にはみ出る構成となっている。 The peripheral wall portion 312 of the sound guide portion 224 connects the substantially “C” -shaped first peripheral wall portion 312 a surrounding the speaker 223 and the discontinuous portion of the substantially “C” -shaped first peripheral wall portion 312 a. As shown in FIG. 5, the second peripheral wall portion 312 b having a substantially “U” shape extending below the first peripheral wall portion 312 a is provided. In this case, the height dimension of each of the peripheral wall portions 312 a and 312 b is provided. Are set to be substantially the same, and the second peripheral wall portion 312b protrudes around the cover member 311 (outside).

そして、両周壁部３１２ａ、３１２ｂにて囲まれる領域により開口部３１４が構成され、以下、第１の周壁部３１２ａに対応する開口部３１４の領域を第１の開口部３１４ａ、第２の周壁部３１２ｂに対応する開口部３１４の領域を第２の開口部３１４ｂとする。なお、３１５は、導音部２２４において、底壁部３１３よりも一段高い位置に形成された平坦部であり、この平坦部３１５は、第１の周壁部３１２ａ（第１の開口部３１４ａ）に対応する底壁部３１３箇所を取り巻く略馬蹄形状の水平面からなる。 Then, an opening 314 is constituted by a region surrounded by both the peripheral wall portions 312a and 312b. Hereinafter, the region of the opening 314 corresponding to the first peripheral wall portion 312a is defined as the first opening 314a and the second peripheral wall portion. A region of the opening 314 corresponding to 312b is a second opening 314b. Reference numeral 315 denotes a flat portion formed at a level higher than the bottom wall portion 313 in the sound guide portion 224, and the flat portion 315 is formed on the first peripheral wall portion 312a (first opening portion 314a). It consists of a substantially horseshoe-shaped horizontal surface surrounding the corresponding bottom wall 313 locations.

従って、カバー部材３１１を正面から見ると、底壁部３１３と平坦部３１５とが開口部３１４全体を臨むように構成され、このことは、底壁部３１３と平坦部３１５とを合わせた領域が、各開口部３１４ａ，３１４ｂからなる開口部３１４領域に相当することを意味している。 Therefore, when the cover member 311 is viewed from the front, the bottom wall portion 313 and the flat portion 315 are configured to face the entire opening portion 314. This is because the region where the bottom wall portion 313 and the flat portion 315 are combined is formed. , Which corresponds to an opening 314 region composed of the openings 314a and 314b.

この際、図４に示すように略馬蹄形状の平坦部３１５が、略円形のスピーカ２２３の一部となるスピーカ２２３の前面側外縁部と当接するように構成されていることによって、スピーカ２２３の前面から出る音が、スピーカ２２３と第１の周壁部３１２ａとの隙間で干渉を生じることがないようになっている。 At this time, as shown in FIG. 4, the substantially horseshoe-shaped flat portion 315 is configured so as to abut on the front side outer edge portion of the speaker 223 which is a part of the substantially circular speaker 223, thereby The sound emitted from the front surface is prevented from causing interference in the gap between the speaker 223 and the first peripheral wall portion 312a.

また、図４中、３１６は、平坦部３１５と底壁部３１３と間を繋ぐための立壁部であり、この立壁部３１６は、第１の周壁部３１２ａや第２の周壁部３１２ｂと略平行に沿って延びる壁部からなる。そして、この場合、スピーカ２２３から発せられる音は、立壁部３１６と底壁部３１３との境界部分及びその近傍（つまり図４中、領域Ｊ１）にて音の向きが第２の周壁部３１２ｂ側に変化する。また、この第２の周壁部３１２ｂ側に音の向きが変わった音は、さらに底壁部３１３と第２の周壁部３１２ｂとの境界部分及びその近傍（つまり図４中、領域Ｊ２）にて音の向きが開口部３１４側（第２の開口部３１４ｂ側）に変化する。 In FIG. 4, reference numeral 316 denotes an upright wall portion for connecting the flat portion 315 and the bottom wall portion 313, and the upright wall portion 316 is substantially parallel to the first peripheral wall portion 312 a and the second peripheral wall portion 312 b. It consists of the wall part extended along. In this case, the sound emitted from the speaker 223 is directed toward the second peripheral wall portion 312b on the boundary portion between the standing wall portion 316 and the bottom wall portion 313 and in the vicinity thereof (that is, the region J1 in FIG. 4). To change. Further, the sound whose direction has been changed toward the second peripheral wall portion 312b is further at the boundary portion between the bottom wall portion 313 and the second peripheral wall portion 312b and in the vicinity thereof (that is, the region J2 in FIG. 4). The direction of the sound changes to the opening 314 side (second opening 314b side).

なお、カバー部材３１１において、導音部２２４を除く外周部の適宜箇所には、ケース体３０７の前記各係合部に対応する複数の係止部（図示せず）がそれぞれ形成されている。従って、ケース体３０７の前記各係合部をカバー部材３１１の前記各係止部に係止させることで、導音部２２４を有するカバー部材３１１が、回路基板３０１の背後を覆うようにケース体３０７に装着されることになるが、この際、本実施形態では、カバー部材３１１のうち導音部２２４の一部である第２の周壁部３１２ｂのみが、回路基板３０１の周囲（外部）にはみ出る構成となるため、この第２の周壁部３１２ｂに対応する第２の開口部３１４ｂが、回路基板３０１によって覆い隠されない状態となる。 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 the sound guide portion 224. Therefore, the cover body 311 having the sound guide portion 224 covers the back of the circuit board 301 by locking the engagement portions of the case body 307 to the lock portions of the cover member 311. At this time, in this embodiment, only the second peripheral wall portion 312b which is a part of the sound guide portion 224 of the cover member 311 is provided around the circuit board 301 (outside). Since it protrudes, the second opening 314 b corresponding to the second peripheral wall 312 b is not covered by the circuit board 301.

これにより、第２の開口部３１４ｂは、導音部２２４内に収納されるスピーカ２２３から発せられる音（音波）を回路基板３０１の前方側へと導くための開口窓からなる。つまり、スピーカ２２３の前面から出る前記音波は、導音部２２４内部及び第２の開口部３１４ｂを通り、回路基板３０１の前方側となる車両用情報提供装置１００外部に導かれるようになっている。 As a result, the second opening 314 b includes an opening window for guiding the sound (sound wave) emitted from the speaker 223 accommodated in the sound guide 224 to the front side of the circuit board 301. That is, the sound wave emitted from the front surface of the speaker 223 is guided to the outside of the vehicle information providing apparatus 100 on the front side of the circuit board 301 through the inside of the sound guide 224 and the second opening 314b. .

また本実施形態では、図４に示すように第２の周壁部３１２ｂの内壁面に沿うように、クッション材等からなる吸音部材３２０が、両面テープ等の所定の固定手段を用いて固定（配設）される構成となっている。 Further, in this embodiment, as shown in FIG. 4, the sound absorbing member 320 made of a cushion material or the like is fixed (arranged) using a predetermined fixing means such as a double-sided tape along the inner wall surface of the second peripheral wall portion 312b. It is a configuration to be provided.

ここで、図６（ａ）は、第２の周壁部３１２ｂの前記内壁面に吸音部材３２０が固定されていない状態での、スピーカ２２３吹鳴時における前記音波の音圧ー周波数特性を示している。このように第２の周壁部３１２ｂに吸音部材３２０が固定されていない場合には、音圧レベルが、ある所定の周波数Ｆ１において、波形の鋭い突出部分となるピークＷ１を有するとともに、所定の周波数Ｆ１とは異なる他の周波数Ｆ２において、波形の鋭い落ち込み部分となるディップＷ２を有するという現象が生じる。 Here, FIG. 6A shows a sound pressure-frequency characteristic of the sound wave when the speaker 223 is blown in a state where the sound absorbing member 320 is not fixed to the inner wall surface of the second peripheral wall portion 312b. . Thus, when the sound absorbing member 320 is not fixed to the second peripheral wall portion 312b, the sound pressure level has a peak W1 that is a sharply protruding portion of the waveform at a predetermined frequency F1, and the predetermined frequency. At another frequency F2 different from F1, a phenomenon of having a dip W2 that becomes a sharp drop portion of the waveform occurs.

つまり、スピーカ２２３から発せられる前記音波は、導音部２２４の内部を通過し、第２の開口部３１４ｂから外部に放射される。この際、導音部２２４の内部において、特に第２の周壁部３１２ｂと底壁部３１３との境界部分及びその近傍にて音の向きが変化する箇所（つまり前述した領域Ｊ２）と、第２の開口部３１４ｂとで、音響インピーダンスが大きく変化することに起因して、前記音波の一部は、反射して導音部２２４内部に戻ってくる。これにより特定の周波数（例えば前述した周波数Ｆ１、Ｆ２）において、導音部２２４内部を通り第２の開口部３１４ｂ側に向かう前記音波と、これとは逆に第２の開口部３１４ｂから導音部２２４内部に戻ってくる前記音波の一部との干渉に伴い定在波が発生する。 That is, the sound wave emitted from the speaker 223 passes through the inside of the sound guide portion 224 and is radiated to the outside from the second opening 314b. At this time, in the inside of the sound guide portion 224, in particular, the boundary portion between the second peripheral wall portion 312b and the bottom wall portion 313 and a portion where the sound direction changes in the vicinity thereof (that is, the region J2 described above), the second Part of the sound wave is reflected and returned to the inside of the sound guide part 224 due to the large change in acoustic impedance at the opening 314b. As a result, at a specific frequency (for example, the above-described frequencies F1 and F2), the sound wave that passes through the inside of the sound guide portion 224 toward the second opening portion 314b, and conversely, the sound guide from the second opening portion 314b. A standing wave is generated in association with a part of the sound wave returning to the inside of the unit 224.

そして、この定在波が発生する前記特定の周波数では、前記音波と前記音波の一部とが強め合うように干渉することで、前記特定の周波数のうち所定の周波数Ｆ１にて前述したピークＷ１が生じるとともに、前記音波と前記音波の一部とが弱め合うように干渉することで、前記特定の周波数のうち他の周波数Ｆ２にて前述したディップＷ２が生じることになる。従って、第２の周壁部３１２ｂに吸音部材３２０が配設されていない状態では、前記音波の音圧ー周波数特性が、ピークＷ１やディップＷ２のある乱れた特性となってしまう。 Then, at the specific frequency where the standing wave is generated, the peak W1 described above at the predetermined frequency F1 among the specific frequencies is caused by the interference such that the sound wave and a part of the sound wave strengthen each other. In addition, the dip W2 described above is generated at the other frequency F2 of the specific frequency by interfering the sound wave and a part of the sound wave so as to weaken each other. Therefore, in a state where the sound absorbing member 320 is not disposed on the second peripheral wall portion 312b, the sound pressure-frequency characteristic of the sound wave becomes a distorted characteristic having a peak W1 and a dip W2.

そこで、本実施形態では、前記音波の音圧ー周波数特性ができるだけ乱れのない略平坦（略フラット）な特性を有するように、第２の周壁部３１２ｂの内壁面に吸音部材３２０を配設する構成とした。図６（ｂ）は、第２の周壁部３１２ｂの前記内壁面に吸音部材３２０を配設した状態での音圧ー周波数特性を示す。 Therefore, in the present embodiment, the sound absorbing member 320 is disposed on the inner wall surface of the second peripheral wall portion 312b so that the sound pressure-frequency characteristic of the sound wave has a substantially flat (substantially flat) characteristic with as little disturbance as possible. The configuration. FIG. 6B shows a sound pressure-frequency characteristic in a state where the sound absorbing member 320 is disposed on the inner wall surface of the second peripheral wall portion 312b.

かかる図６（ｂ）に示す音圧ー周波数特性によれば、所定の周波数Ｆ１にて生じるピークＷ３が、図６（ａ）の吸音部材３２０を前記内壁面に配設しないときのピークＷ１に比べて大幅に低減され、且つ、他の周波数Ｆ２にて生じるピークＷ４が、図６（ａ）の吸音部材３２０を前記内壁面に配設しないときのピークＷ２に比べて大幅に低減されていることが理解できる。 According to the sound pressure-frequency characteristics shown in FIG. 6B, the peak W3 generated at the predetermined frequency F1 is the peak W1 when the sound absorbing member 320 of FIG. 6A is not disposed on the inner wall surface. Compared to the peak W2 when the sound absorbing member 320 of FIG. 6 (a) is not disposed on the inner wall surface, the peak W4 generated at the other frequency F2 is greatly reduced. I understand that.

つまり、このことは第２の周壁部３１２ｂの前記内壁面に配設される吸音部材３２０が導音部２２４内部に生じる前記定在波を吸収する機能を有し、これにより前記定在波が抑制されるため、本実施形態によればピークＷ１の突出量やディップＷ２の落ち込み量が大幅に低減されたピークＷ３、ディップＷ４を有する音圧ー周波数特性を得ることができることを意味してなる。 That is, this has the function of the sound absorbing member 320 disposed on the inner wall surface of the second peripheral wall portion 312b absorbing the standing wave generated inside the sound guide portion 224, whereby the standing wave is Therefore, according to the present embodiment, it means that a sound pressure-frequency characteristic having peaks W3 and dip W4 in which the protrusion amount of peak W1 and the dip amount of dip W2 are greatly reduced can be obtained. .

従って、例えば前記内壁面に吸音部材３２０を配設した状態にて、スピーカ２２３から所定の周波数Ｆ１を有する前記音波が発せられると、かかる所定の周波数Ｆ１を有する前記音波は、ピークＷ３の突出量が僅かであるから、第２の開口部３１４ｂから音質の良好な状態で放射され、その後、後述するように前記利用者の眼前に直接、伝達される。また、当然、スピーカ２２３から他の周波数Ｆ２を有する前記音波が発せられると、かかる他の周波数Ｆ２を有する前記音波は、ディップＷ４の落ち込み量が僅かであるから、第２の開口部３１４ｂから音質の良好な状態で放射される。 Therefore, for example, when the sound wave having the predetermined frequency F1 is emitted from the speaker 223 with the sound absorbing member 320 disposed on the inner wall surface, the sound wave having the predetermined frequency F1 is projected from the peak W3. Therefore, the sound is radiated from the second opening 314b with good sound quality, and then transmitted directly to the user's eyes as will be described later. Naturally, when the sound wave having the other frequency F2 is emitted from the speaker 223, the sound wave having the other frequency F2 has a slight drop amount of the dip W4, and therefore the sound quality from the second opening 314b. Is emitted in good condition.

以上の各部により、車両用情報提供装置１００（第３の指針式表示部１０３）が構成され、さらに、この車両用情報提供装置１００の下方には、バイザー３１０や見返し部材３０８に沿うようにコラムカバー４００が配設される（図３参照）。 The above-described units constitute the vehicle information providing apparatus 100 (third pointer type display unit 103). Further, below the vehicle information providing apparatus 100, a column extends along the visor 310 and the turning member 308. A cover 400 is disposed (see FIG. 3).

このコラムカバー４００とバイザー３１０（見返し部材３０８）との間には、第２の開口部３１４を通過するスピーカ２２３の音を前記利用者側に導くための微小なクリアランスからなる間隙４０１が形成されているため、結局、スピーカ２２３の前面から出る音は、導音部２２４内部及び第２の開口部３１４ｂを通過し、その後、間隙４０１を通過して前記利用者の眼前に直接、伝達されることになる。 A gap 401 is formed between the column cover 400 and the visor 310 (look-back member 308). The gap 401 includes a minute clearance for guiding the sound of the speaker 223 passing through the second opening 314 to the user side. Therefore, after all, the sound emitted from the front surface of the speaker 223 passes through the inside of the sound guide 224 and the second opening 314b, and then is transmitted directly to the user's eyes through the gap 401. It will be.

この際、前記利用者の眼前に到達する音（音波）は、前記定在波が吸音部材３２０によって吸収されることで、音圧ー周波数特性の乱れが抑制される。このため、周波数の値に関係なく音質の良好な音となる。なお、本実施形態における車両用情報提供装置１００は、図２に示すように多重通信ライン２３０を介して走行制御装置２３１と操作手段２３２とに接続されている。 At this time, the sound (sound wave) reaching the user's eyes is absorbed by the sound absorbing member 320 by the standing wave, so that the disturbance of the sound pressure-frequency characteristic is suppressed. For this reason, it becomes a sound with favorable sound quality irrespective of the value of frequency. 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.

次に、車両用情報提供装置１００の動作について説明する。制御手段２０２は、車両情報の入出力を行う車両情報端子２１０及び多重通信入出力端子２１１から、走行制御（オートクルーズ、レーンキープ）に関する車両状態、アラーム情報、及びオートクルーズ、レーンキープの操作に関する情報を入手し、この情報に基づいてオートクルーズ、レーンキープに関する車両状態報知、アラーム出力、及びオートクルーズ、レーンキープの操作に関するガイダンス、アンサーバックを、聴覚情報提供手段２２０のスピーカ２２３を介して効果音と音声（と表示部Ｄ１の画像）で行う。 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.

ここで、前記アラーム情報を例に挙げて制御手段２０２の入力時の動作について説明する。制御手段２０２は、車両情報の入出力を行う車両情報端子２１０及び多重通信入出力端子２１１から車両に関する情報を入手し、この情報に基づいて警告の発生条件があるか否か判定する。ここで警告の発生条件を検出すると警告情報を聴覚情報提供手段２２０で効果音と音声とで報知するとともに、前記警告情報に関係する表示形態を表示部Ｄ１によって表示する。 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. When the warning condition is detected, the warning information is notified by the sound information providing means 220 using sound effects and voices, and the display form related to the warning information is displayed by the display unit D1.

図７は、その具体例を示すものであり、制御手段２０２は、シートベルトが未着用（未装着）であることを示す検出信号が車両情報端子２１０または多重通信入出力端子２１１を介して入力されると、効果音「ポーン」の後、音声にて「シートベルトを着用してください」を出力するように聴覚情報提供手段２２０を制御する。 FIG. 7 shows a specific example, and the control means 202 inputs a detection signal indicating that the seat belt is not worn (not worn) via the vehicle information terminal 210 or the multiplex communication input / output terminal 211. Then, after the sound effect “Pawn”, the auditory information providing means 220 is controlled to output “Please wear your seat belt” by voice.

従って、聴覚情報提供手段２２０におけるスピーカ２２３から出る前記効果音及び前記音声は、導音部２２４内部、第２の開口部３１４ｂ、並びに間隙４０１を通って、前記利用者の眼前に向けて発せられることで、前記利用者は、
前記効果音及び前記音声を容易に認識することができる。なお、ここでは表示部Ｄ１を介して視覚情報も併用している。また、例えば前記効果音及び前記音声が、所定の周波数Ｆ１を有する音波からなる場合であっても、前記効果音及び前記音声は、ピークＷ３の突出量が微量であるから音質の良好な音として前記利用者の眼前に直接、伝達されることになる。 Therefore, the sound effect and the sound output from the speaker 223 in the auditory information providing unit 220 are emitted toward the user's eyes through the sound guide 224, the second opening 314b, and the gap 401. So, the user
The sound effect and the sound can be easily recognized. Here, visual information is also used via the display unit D1. Further, for example, even if the sound effect and the sound are composed of sound waves having a predetermined frequency F1, the sound effect and the sound are sound with good sound quality because the protruding amount of the peak W3 is very small. It is transmitted directly to the user's eyes.

以上のように本実施形態では、前記利用者に所定情報を報知する車両用情報提供装置１００であって、前記利用者に車両の各種状態に応じた聴覚情報を提供する聴覚情報提供手段２２０と、聴覚情報提供手段２２０を制御する制御手段２０２を有する回路基板３０１と、回路基板３０１の背後に配設されるカバー部材３１１とを備え、聴覚情報提供手段２２０は、回路基板３０１の背面に配設されたスピーカ２２３と、このスピーカ２２３から発せられる音を回路基板３０１側に導くようにカバー部材３１１に一体形成された導音部２２４とを備えてなり、導音部２２４における第２の周壁部３１２の内壁面に吸音部材３２０を配設してなるものである。 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 a control means 202 for controlling the auditory information providing means 220, and a cover member 311 disposed behind the circuit board 301. The auditory information providing means 220 is arranged on the back of the circuit board 301. A speaker 223 provided, and a sound guide portion 224 integrally formed with the cover member 311 so as to guide the sound emitted from the speaker 223 to the circuit board 301 side, and a second peripheral wall in the sound guide portion 224 The sound absorbing member 320 is disposed on the inner wall surface of the portion 312.

従って、吸音部材３２０によって導音部２２４内部に生じる前記定在波が吸収されるため、音圧ー周波数特性の乱れの原因となっていたピークやディップを大幅に低減することができ、これにより周波数の値に関係なく音質の良好な音を前記利用者の眼前に直接、伝達することが可能となる。つまり、スピーカ２２３から発せられる音は、その周波数の値に関係なく、導音部２２４の内部並びに開口部３１４を通過して、音質の良好な音として車両用情報提供装置１００の前方（前記利用者）に、直接、伝達される構成となるため、音響特性の良好な車両用情報提供装置を提供することができる。 Accordingly, since the standing wave generated inside the sound guide portion 224 is absorbed by the sound absorbing member 320, the peak and dip that caused the disturbance of the sound pressure-frequency characteristics can be greatly reduced. It is possible to transmit a sound with good sound quality directly to the user's eyes regardless of the frequency value. That is, the sound emitted from the speaker 223 passes through the inside of the sound guide section 224 and the opening 314 regardless of the value of the frequency, and is forward of the vehicle information providing apparatus 100 as the sound with good sound quality (the above-described use) Therefore, it is possible to provide a vehicle information providing apparatus with good acoustic characteristics.

また本実施形態では、第２の周壁部３１２ｂの前記内壁面にクッション材からなる吸音部材３２０が配設されてなる例について説明したが、吸音部材３２０は、前記定在波を吸収し、所定の周波数Ｆ１におけるピークの突出量や他の周波数Ｆ２におけるディップの落ち込み量が大幅に低減される音圧ー周波数特性となるようであれば、クッション材以外のあらゆる材料（材質）のものを適用することが可能であり、また吸音部材３２０の形状（例えば第２の周壁部３１２ｂの板厚方向に沿った断面形状）もあらゆる形状を採用することが可能であることは言うまでもない。 Further, in the present embodiment, the example in which the sound absorbing member 320 made of a cushion material is disposed on the inner wall surface of the second peripheral wall portion 312b has been described. However, the sound absorbing member 320 absorbs the standing wave and has a predetermined value. If the sound pressure-frequency characteristics are such that the peak protrusion amount at the frequency F1 and the dip drop amount at the other frequencies F2 are greatly reduced, any material (material) other than the cushion material is applied. Needless to say, the shape of the sound absorbing member 320 (for example, the cross-sectional shape along the thickness direction of the second peripheral wall portion 312b) may be any shape.

また本実施形態では、導音部２２４における第２の周壁部３１２ｂの前記内壁面に吸音部材３２０が固定（配設）されている例について説明したが、吸音部材３２０は、所定の周波数Ｆ１におけるピークの突出量や他の周波数Ｆ２におけるディップの落ち込み量が大幅に低減される音圧ー周波数特性となるようであれば、導音部２２４（つまり第２の周壁部３１２ｂ、底壁部３１３、立壁部３１６）における内壁面のあらゆる位置に吸音部材３２０を配設することが可能であり、例えば図８に示すように第２の周壁部３１２ｂの内壁面とスピーカ２２３と向かい合う底壁部３１３箇所とに吸音部材３２０を配設してもよい。ここで、底壁部３１３箇所に配設される吸音部材３２０は、前述した領域Ｊ１にて音の向きが第２の周壁部３１２ｂ側に変わることに起因した、音響インピーダンスの変化を軽減するものである。 Further, in the present embodiment, the example in which the sound absorbing member 320 is fixed (arranged) to the inner wall surface of the second peripheral wall portion 312b in the sound guide portion 224 has been described. However, the sound absorbing member 320 has a predetermined frequency F1. If the sound pressure-frequency characteristics are such that the peak protrusion amount and the dip drop amount at other frequencies F2 are significantly reduced, the sound guide portion 224 (that is, the second peripheral wall portion 312b, the bottom wall portion 313, The sound absorbing member 320 can be disposed at any position on the inner wall surface of the standing wall portion 316). For example, as shown in FIG. 8, the inner wall surface of the second peripheral wall portion 312b and the bottom wall portion 313 facing the speaker 223. Further, the sound absorbing member 320 may be disposed. Here, the sound absorbing member 320 disposed at the bottom wall portion 313 reduces the change in acoustic impedance caused by the change of the sound direction to the second peripheral wall portion 312b side in the region J1 described above. It is.

ここで、前述したあらゆる位置とは、例えば第２の周壁部３１２ｂの内壁面、底壁部３１３の内壁面、立壁部３１６の内壁面のうち少なくとも１つの内壁面の所定位置、隣接する第２の周壁部３１２ｂの内壁面と底壁部３１３の内壁面とを跨ぐような位置、隣接する底壁部３１３の内壁面と立壁部３１６の内壁面とを跨ぐような位置、隣接する三者（第２の周壁部３１２ｂ、底壁部３１３、立壁部３１６）の内壁面を跨ぐような位置を意味してなる。 Here, the above-mentioned every position refers to, for example, a predetermined position of at least one inner wall surface among the inner wall surface of the second peripheral wall portion 312b, the inner wall surface of the bottom wall portion 313, and the inner wall surface of the standing wall portion 316, the adjacent second A position that straddles the inner wall surface of the peripheral wall portion 312b and the inner wall surface of the bottom wall portion 313, a position that straddles the inner wall surface of the adjacent bottom wall portion 313 and the inner wall surface of the standing wall portion 316, and three adjacent ( It means a position that straddles the inner wall surface of the second peripheral wall portion 312b, the bottom wall portion 313, and the standing wall portion 316).

（第２実施形態）次に、本発明の第２の実施形態を図９に基づいて説明するが、前述の第１実施形態と同一もしくは相当個所には同一の符号を用いてその詳細な説明は省略する。この第２実施形態においては、前記第１実施形態にて採用した吸音部材３２０を廃止するとともに、第２の周壁部３１２ｂを立壁形状ではなくを所定の曲率を有するような湾曲壁３３０とした構成となっている。 (Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIG. 9, and the same reference numerals are used for the same or corresponding parts as in the first embodiment, and a detailed description thereof will be given. Is omitted. In the second embodiment, the sound absorbing member 320 employed in the first embodiment is eliminated, and the second peripheral wall portion 312b is not a standing wall shape but a curved wall 330 having a predetermined curvature. It has become.

この場合、湾曲壁３３０は、第２の周壁部３１２ｂの先端側（つまり開口部３１４）から底壁部３１３側に向かうに従って、スピーカ２２３側に延びる湾曲形状にて形成されてなる。また、湾曲壁３３０は、その内壁面が前記曲率を有する内周曲面部（曲面部）Ｒ１からなるとともに、その外壁面が前記曲率を有する外周曲面部Ｒ２からなる。つまり、本第２実施形態の場合、導音部２２４における内壁面の所定箇所である湾曲壁３３０の内壁面に曲面部Ｒ１が形成された構成となっている。 In this case, the curved wall 330 is formed in a curved shape extending toward the speaker 223 side from the distal end side (that is, the opening portion 314) of the second peripheral wall portion 312b toward the bottom wall portion 313 side. Further, the curved wall 330 includes an inner curved surface portion (curved surface portion) R1 having an inner wall surface having the curvature, and an outer curved surface portion R2 having an outer wall surface having the curvature. That is, in the case of the second embodiment, the curved surface portion R1 is formed on the inner wall surface of the curved wall 330, which is a predetermined portion of the inner wall surface in the sound guide portion 224.

ところで、本発明者は、導音部２２４（第２の周壁部３１２ｂ）に開口部３１４から底壁部３１３に向かうに従ってスピーカ２２３側に湾曲する曲面部Ｒ１を有する湾曲壁３３０を形成した構成に関して、音圧ー周波数特性の解析を行った結果、前記第１実施形態と同様に図６（ｂ）に示すようなピークやディップの低減された音圧ー周波数特性が得られることがわかった。換言すれば、本第２実施形態のように湾曲壁３３０の内壁面を前記曲率を有する曲面部Ｒ１とした構成であっても、音圧ー周波数特性の乱れの原因となっていたピークやディップを大幅に低減することができ、これにより周波数の値に関係なく音質の良好な音を前記利用者の眼前に直接、伝達することが可能となる。 By the way, the present inventor relates to a configuration in which a curved wall 330 having a curved surface portion R1 that curves toward the speaker 223 side toward the bottom wall portion 313 from the opening 314 toward the sound guide portion 224 (second peripheral wall portion 312b) is formed. As a result of analyzing the sound pressure-frequency characteristics, it was found that the sound pressure-frequency characteristics with reduced peaks and dips as shown in FIG. 6B can be obtained as in the first embodiment. In other words, even if the inner wall surface of the curved wall 330 is the curved surface portion R1 having the curvature as in the second embodiment, the peak or dip that caused the disturbance of the sound pressure-frequency characteristics. Therefore, it is possible to transmit a sound with good sound quality directly in front of the user regardless of the frequency value.

また本第２実施形態では、導音部２２４の一部である第２の周壁部３１２を湾曲壁３３０とした例について説明したが、例えば図１０に示すように湾曲壁３３０に加えて立壁部３１６と底壁部３１３との境界部分及びその近傍にも所定の曲率を有する他の湾曲壁３４０を形成してもよい。 In the second embodiment, the example in which the second peripheral wall portion 312 that is a part of the sound guide portion 224 is the curved wall 330 has been described. For example, as shown in FIG. Another curved wall 340 having a predetermined curvature may be formed at and near the boundary portion between 316 and the bottom wall portion 313.

また本第２実施形態では、湾曲壁３３０の内壁面を曲面部Ｒ１、湾曲壁３３０の外壁面を外周曲面部Ｒ２とした例について説明したが、外周曲面部Ｒ２の形状は、あらゆる形状を適用することが可能である。なお、前述した他の湾曲壁３４０の外周曲面部についても、あらゆる形状を適用することが可能である。 In the second embodiment, the example in which the inner wall surface of the curved wall 330 is the curved surface portion R1 and the outer wall surface of the curved wall 330 is the outer peripheral curved surface portion R2 has been described, but any shape can be applied to the outer peripheral curved surface portion R2. Is possible. Note that any shape can be applied to the outer peripheral curved surface portion of the other curved wall 340 described above.

（第３実施形態）次に、本発明の第３の実施形態を図１１、図１２に基づいて説明するが、前述の第１、第２実施形態と同一もしくは相当個所には同一の符号を用いてその詳細な説明は省略する。この第３実施形態が、前記第１実施形態と異なる点は、第２の周壁部３１２ｂの前記内壁面に固定された吸音部材３２０を廃止し、スピーカ２２３と向かい合う導音部２２４の底壁部３１３箇所にスリット群（孔部）３５０を形成した点である。 (Third Embodiment) Next, a third embodiment of the present invention will be described with reference to FIGS. 11 and 12. The same reference numerals are used for the same or corresponding parts as those of the first and second embodiments. The detailed description thereof is omitted. The third embodiment differs from the first embodiment in that the sound absorbing member 320 fixed to the inner wall surface of the second peripheral wall portion 312b is eliminated and the bottom wall portion of the sound guide portion 224 facing the speaker 223 is removed. The slit group (hole part) 350 is formed at 313 locations.

かかるスリット群３５０は、図１２に示すように互いに平行状態をなす複数個（本例では４個）のスリットからなり、スリット群３５０を構成する個々のスリットは、カバー部材３１１を正視したときに横方向に形成されてなる。 The slit group 350 includes a plurality of (four in this example) slits that are parallel to each other as shown in FIG. 12, and each of the slits constituting the slit group 350 is viewed when the cover member 311 is viewed from the front. It is formed in the horizontal direction.

本発明者は、上述したようにスピーカ２２３と向かい合う底壁部３１３箇所にスリット群３５０を形成した構成に関して、音圧ー周波数特性の解析を行った結果、前記第１実施形態と同様に図６（ｂ）に示すようなピークやディップの低減された音圧ー周波数特性が得られることがわかった。換言すれば、本第３実施形態のように導音部２２４の底壁部３１３にスリット群３５０を形成した構成であっても、音圧ー周波数特性の乱れの原因となっていたピークやディップを大幅に低減することができ、これにより周波数の値に関係なく音質の良好な音を前記利用者の眼前に直接、伝達することが可能となる。 As a result of analyzing the sound pressure-frequency characteristics with respect to the configuration in which the slit group 350 is formed in the bottom wall portion 313 facing the speaker 223 as described above, the present inventor analyzed the sound pressure-frequency characteristics as in the first embodiment. It was found that sound pressure-frequency characteristics with reduced peaks and dips as shown in (b) were obtained. In other words, even if the slit group 350 is formed in the bottom wall portion 313 of the sound guide portion 224 as in the third embodiment, the peak or dip that caused the disturbance of the sound pressure-frequency characteristics. Therefore, it is possible to transmit a sound with good sound quality directly in front of the user regardless of the frequency value.

なお、スピーカ２２３から発せられる音がスリット群３５０を通過する割合は、開口部３１４を通過する割合と比べて、小さいことを本発明者は実験結果として得ている。 The inventor has obtained as an experimental result that the rate at which the sound emitted from the speaker 223 passes through the slit group 350 is smaller than the rate at which the sound passes through the opening 314.

また本第３実施形態では、孔部３５０が、スピーカ２２３と向かい合う底壁部３１３箇所に形成されたスリット群からなる例について説明したが、例えば孔部３５０を、スリット群ではなく、スピーカ２２３と向かい合う底壁部３１３箇所に密集するように開口形成された複数個の貫通孔としてもよい。 In the third embodiment, the example in which the hole 350 is formed of a slit group formed at the bottom wall portion 313 facing the speaker 223 has been described. For example, the hole 350 is not the slit group but the speaker 223. It is good also as a several through-hole formed so that it may concentrate on the bottom wall part 313 location which faces each other.

また本第３実施形態では、導音部２２４において、底壁部３１３に孔部３５０を形成した場合について説明したが、例えば孔部３５０に加えて第２の周壁部３１２ｂの前記内壁面に吸音部材３２０を配設した構成（つまり第１実施形態と第３実施形態とを組み合わせた構成）としてもよいし、孔部３５０に加えて第２の周壁部３１２ｂを所定の曲率を有する湾曲壁３３０とした構成（つまり第２実施形態と第３実施形態とを組み合わせた構成）としてもよいことは言うまでもない。 In the third embodiment, the case where the hole 350 is formed in the bottom wall 313 of the sound guide 224 has been described. For example, in addition to the hole 350, the sound absorption is applied to the inner wall surface of the second peripheral wall 312b. A configuration in which the member 320 is disposed (that is, a configuration in which the first embodiment and the third embodiment are combined) may be used, and the second peripheral wall portion 312b may be a curved wall 330 having a predetermined curvature in addition to the hole portion 350. It is needless to say that the above configuration (that is, a configuration combining the second embodiment and the third embodiment) may be used.

なお前記各実施形態では、スピーカ２２３と導音部２２４を用いて、スピーカ２２３から発せられる音が導音部２２４内部、第２の開口部３１４ｂ、間隙４０１を通過して前記利用者に伝達される場合について説明したが、例えばスピーカの代わりにブザーを採用し、ブザーと導音部を用いて、ブザーから発せられる音を前記利用者に伝えるようにしてもよい。 In each of the embodiments, using the speaker 223 and the sound guide unit 224, sound emitted from the speaker 223 is transmitted to the user through the inside of the sound guide unit 224, the second opening 314b, and the gap 401. However, for example, a buzzer may be used instead of a speaker, and a sound emitted from the buzzer may be transmitted to the user using a buzzer and a sound guide unit.

本発明は、聴覚情報提供手段を利用した車両用情報提供装置に関し、車両情報を提供する車両用計器のみならず、車両に搭載されるマルチディスプレイ装置等の車両用情報提供装置にも適用可能である。 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.

本発明の第１実施形態による車両用情報提供装置の概観図である。1 is an overview of a vehicle information providing apparatus according to a first embodiment of the present invention. 同実施形態による車両用情報提供装置のブロック図である。It is a block diagram of the information provision device for vehicles by the embodiment. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図３中、Ｂ部を拡大して示す要部断面図である。FIG. 4 is an essential part cross-sectional view showing an enlarged B part in FIG. 3. 同実施形態によるカバー部材の要部正面図である。It is a principal part front view of the cover member by the embodiment. （ａ）は第２の周壁部に吸音部材が配設されていない状態での音波の音圧ー周波数特性を示す図であり、（ｂ）は第２の周壁部に吸音部材が配設された状態での音波の音圧ー周波数特性を示す図である。(A) is a figure which shows the sound pressure-frequency characteristic of the sound wave in the state in which the sound absorption member is not arrange | positioned in the 2nd surrounding wall part, (b) is a sound absorption member arrange | positioned in the 2nd surrounding wall part. It is a figure which shows the sound pressure-frequency characteristic of the sound wave in the state of being. 同実施形態による警告情報の一例を示す図である。It is a figure showing an example of warning information by the embodiment. 同実施形態の変形例を示す図である。It is a figure which shows the modification of the same embodiment. 本発明の第２実施形態による車両用情報提供装置の要部断面図である。It is principal part sectional drawing of the information provision apparatus for vehicles by 2nd Embodiment of this invention. 同第２実施形態の変形例を示す図である。It is a figure which shows the modification of 2nd Embodiment. 本発明の第３実施形態による車両用情報提供装置の要部断面図である。It is principal part sectional drawing of the information provision apparatus for vehicles by 3rd Embodiment of this invention. 同第３実施形態によるカバー部材の要部正面図である。It is a principal part front view of the cover member by the 3rd Embodiment.

Explanation of symbols

１００車両用情報提供装置
２０２制御手段
２２０聴覚情報提供手段
２２３スピーカ（吹鳴手段）
２２４導音部
３０１回路基板
３１１カバー部材
３１２周壁部
３１２ａ第１の周壁部
３１２ｂ第２の周壁部
３１３底壁部（底部）
３１４開口部
３１４ａ第１の開口部
３１４ｂ第２の開口部
３２０吸音部材
３３０湾曲壁
３５０孔部（スリット群）
Ｒ１内周曲面部（曲面部）
Ｒ２外周曲面部 DESCRIPTION OF SYMBOLS 100 Information provision apparatus for vehicles 202 Control means 220 Auditory information provision means 223 Speaker (sounding means)
224 Sound conducting part 301 Circuit board 311 Cover member 312 Peripheral wall part 312a First peripheral wall part 312b Second peripheral wall part 313 Bottom wall part (bottom part)
314 Opening 314a First opening 314b Second opening 320 Sound absorbing member 330 Curved wall 350 Hole (slit group)
R1 Inner curved surface (curved surface)
R2 curved surface

Claims

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 circuit board having control means for controlling the auditory information providing means, and a cover member disposed behind the circuit board And
The auditory information providing means includes at least a sounding means disposed on a back surface of the circuit board, and a sound guide unit integrally formed with the cover member so as to guide the sound emitted from the sounding means to the circuit board side. With
A vehicle information providing apparatus comprising a sound absorbing member disposed at a predetermined location on an inner wall surface of the sound guide section.

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 circuit board having control means for controlling the auditory information providing means, and a cover member disposed behind the circuit board And
The auditory information providing means includes at least a sounding means disposed on a back surface of the circuit board, and a sound guide unit integrally formed with the cover member so as to guide the sound emitted from the sounding means to the circuit board side. With
A vehicular information providing apparatus, wherein a curved surface portion is formed at a predetermined location on an inner wall surface of the sound guide portion.

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 circuit board having control means for controlling the auditory information providing means, and a cover member disposed behind the circuit board And
The auditory information providing means includes at least a sounding means disposed on a back surface of the circuit board, and a sound guide unit integrally formed with the cover member so as to guide the sound emitted from the sounding means to the circuit board side. With
A vehicle information providing apparatus, wherein a hole is formed in a bottom wall portion of the sound guide portion.