JP2006302555A - Push button device and telephone device using the same - Google Patents

Push button device and telephone device using the same Download PDF

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JP2006302555A
JP2006302555A JP2005119253A JP2005119253A JP2006302555A JP 2006302555 A JP2006302555 A JP 2006302555A JP 2005119253 A JP2005119253 A JP 2005119253A JP 2005119253 A JP2005119253 A JP 2005119253A JP 2006302555 A JP2006302555 A JP 2006302555A
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push button
light
light guide
button device
keypad
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JP2005119253A
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Japanese (ja)
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Yasunori Tsukamoto
靖典 塚本
Kazumasa Yamamoto
和正 山本
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority to JP2005119253A priority Critical patent/JP2006302555A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a push button device with improved visibility and brightness of an operation panel, and a telephone device using the same. <P>SOLUTION: The push button device has a rubber switch 4 having a light guide part 7 transmitting the light from an LED 3, and a resin button 5 formed so as to cover a light lead out face 7a and a part of an outer wall face 8b of the light guide part 7 of the rubber switch 4. The light guide part 7 is formed into a shape concentrating the light from the LED 3 on a part of an operation face of the resin button and guiding the light. Since the light from a light source is intensively guided from the light guide part of a key padon a part of the operation face of a push button member, illuminates a part of the operation face, and increases the brightness of the part of the operation face, visibility of the operation face can be improved. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、内部に設けた光源により押しボタン部材の操作面を光らせる構造を有する押しボタン装置およびこれを用いた電話装置に関する。   The present invention relates to a push button device having a structure in which an operation surface of a push button member is illuminated by a light source provided therein and a telephone device using the push button device.

例えば、押しボタン式の電話装置においては、夜間時の操作性や意匠の向上等を図るため、押しボタン部材を内部に設けた光源により光らせる、いわゆるバックライト構造が採用されている。従来、このバックライト構造は、各押しボタン部材を透明または半透明の合成樹脂材料により形成し、この押しボタン部材に対応して装置のプリント基板側にＬＥＤ等の光源を配置し、この光源からの光を押しボタン部材の内部を透過させて操作面を光らせる構成である。例えば、特許文献１には、押しボタン部材の下に導光空間部を備えたキーパッド部材を設け、光源からの光を導光空間部により押しボタン部材の下面まで導く構成が記載されている。
特開平７−７４８１１号公報 For example, a push button telephone device employs a so-called backlight structure in which a push button member is illuminated by a light source provided therein to improve nighttime operability and design. Conventionally, in this backlight structure, each push button member is formed of a transparent or translucent synthetic resin material, and a light source such as an LED is disposed on the printed circuit board side of the device corresponding to the push button member. The light is transmitted through the inside of the push button member to shine the operation surface. For example, Patent Document 1 describes a configuration in which a keypad member having a light guide space portion is provided below a push button member, and light from a light source is guided to the lower surface of the push button member by the light guide space portion. .
Japanese Unexamined Patent Publication No. 7-74811

ところで、従来のバックライト構造では、光源から押しボタン部材の天面までの高さが高い場合、光源からの光が拡散してしまうので、押しボタン部材全体がぼんやりと光り、輝度や視認性が不足するという問題がある。特許文献１に記載の押しボタン装置の場合も、光源からの光を導光空間部により押しボタン部材の下面まで導いているものの、押しボタン装置の天面の全体に光が導かれるので、同様に押しボタン部材全体がぼんやりと光るという問題がある。   By the way, in the conventional backlight structure, when the height from the light source to the top surface of the push button member is high, the light from the light source diffuses, so the entire push button member shines dimly, and brightness and visibility are improved. There is a problem of shortage. In the case of the push button device described in Patent Document 1, the light from the light source is guided to the lower surface of the push button member by the light guide space, but the light is guided to the entire top surface of the push button device. In addition, there is a problem that the entire push button member shines softly.

また、特許文献１に記載の押しボタン装置では、光源からの光を導光空間部により押しボタン部材の下面まで導いているものの、光は押しボタン部材の下面とキーパッド部材との間の隙間や、押しボタン部材のフランジ部を透過して装置内部に漏れるので、輝度が不足するという問題がある。   Further, in the push button device described in Patent Document 1, although light from the light source is guided to the lower surface of the push button member by the light guide space portion, the light is a gap between the lower surface of the push button member and the keypad member. In addition, there is a problem in that the brightness is insufficient because the flange portion of the push button member passes through and leaks into the apparatus.

そこで、本発明は、操作面の輝度および視認性を向上させた押しボタン装置およびこれを用いた電話装置を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a push button device with improved brightness and visibility on an operation surface and a telephone device using the push button device.

本発明の押しボタン装置は、光源からの光を透過する導光部が形成されたキーパッド部材と、キーパッド部材の導光部の光導出面から外壁面の一部までを覆うように形成された押しボタン部材とを有し、導光部は、光源からの光を押しボタン部材の操作面の一部に集中して導く形状としたことを特徴とする。   The push button device of the present invention is formed so as to cover a keypad member formed with a light guide part that transmits light from a light source and a light guide surface of the light guide part of the keypad member to a part of the outer wall surface. And the light guide unit has a shape in which the light from the light source is concentrated and guided to a part of the operation surface of the push button member.

本発明によれば、光源からの光がキーパッド部材の導光部から押しボタン部材の操作面の一部に集中的に導かれ、操作面の一部を集中して照らし、その部分の輝度を増すことができるので、この操作面の視認性を向上することができる。   According to the present invention, the light from the light source is intensively guided from the light guide portion of the keypad member to a part of the operation surface of the push button member, illuminates part of the operation surface, and the luminance of the portion Therefore, the visibility of the operation surface can be improved.

本願の第１の発明は、光源からの光を透過する導光部が形成されたキーパッド部材と、キーパッド部材の導光部の光導出面から外壁面の一部までを覆うように形成された押しボタン部材とを有し、導光部は、光源からの光を押しボタン部材の操作面の一部に集中して導く形状としたことを特徴とする押しボタン装置であり、光源からの光がキーパッド部材の導光部から押しボタン部材の操作面の一部に集中的に導かれ、操作面の一部を集中して照らし、その部分の輝度を増すことができるので、この操作面の視認性を向上させることができる。   1st invention of this application is formed so that the keypad member in which the light guide part which permeate | transmits the light from a light source was formed, and the light guide surface of a light guide part of a keypad member to a part of outer wall surface may be covered. The light guide unit is a push button device characterized by having a shape that guides light from the light source in a concentrated manner on a part of the operation surface of the push button member. This is because light is intensively guided from the light guide part of the keypad member to a part of the operation surface of the push button member, and a part of the operation surface can be concentrated and illuminated to increase the brightness of that part. The visibility of the surface can be improved.

本願の第２の発明は、押しボタン部材の操作面には押しボタン部材の機能を表示するためのマークが形成され、導光部の光導出面は、マークが形成された部分と同じ大きさに形成されたことを特徴とする押しボタン装置であり、光導出面から導出される光が、押しボタン部材の機能を表示するためのマークが形成された部分に集中的に導かれるので、このマーク部分の輝度および視認性を向上することができる。   In the second invention of the present application, a mark for displaying the function of the push button member is formed on the operation surface of the push button member, and the light guide surface of the light guide portion has the same size as the portion where the mark is formed. The push button device is characterized in that the light derived from the light deriving surface is intensively guided to the portion where the mark for displaying the function of the push button member is formed. The brightness and visibility can be improved.

本願の第３の発明は、導光部は、透明の樹脂材料により形成されたものである押しボタン装置であり、光源からの光が、透明の樹脂材料により形成された導光部を通じて押しボタン部材の操作面まで導かれる。   A third invention of the present application is a push button device in which the light guide portion is formed of a transparent resin material, and light from the light source is pushed through the light guide portion formed of the transparent resin material. Guided to the operating surface of the member.

本願の第４の発明は、押しボタン部材は、キーパッド部材の導光部に対峙する部分の厚さが２〜３ｍｍである押しボタン装置であり、キーパッド部材の導光部に対峙する部分の厚さを薄くして導光部から導かれる光が透過しやすくなる。また、光導出面を押しボタン部材の操作面の近傍に配置することが可能となるので、押しボタン部材の操作面の輝度が向上する。   According to a fourth aspect of the present invention, the push button member is a push button device in which the thickness of the portion facing the light guide portion of the keypad member is 2 to 3 mm, and the portion facing the light guide portion of the keypad member Therefore, the light guided from the light guide portion is easily transmitted. Further, since the light guide surface can be disposed in the vicinity of the operation surface of the push button member, the brightness of the operation surface of the push button member is improved.

本願の第５の発明は、キーパッド部材は、キーパッド部材の一部の変形により対向する接点と接触可能となる接点部を有する押しボタン装置であり、電気接点を有するスイッチとし、電話装置等の電気機器のスイッチとして有用である。   According to a fifth aspect of the present invention, the keypad member is a push button device having a contact portion that can be brought into contact with a contact point facing by deformation of a part of the keypad member. It is useful as a switch for electrical equipment.

本願の第６の発明は、光源は、導後部の光導出面に対向するように配置した押しボタン装置であり、光源からの光をそのまま光導出面から出力することができ、効率よく光らせることができる。   According to a sixth aspect of the present invention, the light source is a push button device disposed so as to face the light guiding surface of the rear guiding portion, and the light from the light source can be output from the light guiding surface as it is, and can be emitted efficiently. .

本願の第７の発明は、上記押しボタン装置を備えた電話装置であり、操作面の輝度および視認性を向上させた電話装置を提供することができる。   7th invention of this application is a telephone apparatus provided with the said pushbutton apparatus, and can provide the telephone apparatus which improved the brightness | luminance and visibility of the operation surface.

以下、本発明の実施の形態について図面を参照して説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の実施の形態における押しボタン装置を備えた電話装置としてのコードレス電話装置本体部の斜視図、図２は図１の押しボタン部分を拡大した平面図、図３はラバースイッチと導光部の構成を示す縦断面図である。図４は図２に示す本実施の形態における押しボタン装置の縦断面図である。図５は図４のキーパッド部材の平面図、図６は図５のキーパッド部材上に押しボタン部材を配置した状態の平面図である。   1 is a perspective view of a cordless telephone device main body as a telephone device having a push button device according to an embodiment of the present invention, FIG. 2 is an enlarged plan view of the push button portion of FIG. 1, and FIG. It is a longitudinal cross-sectional view which shows the structure of a light guide part. 4 is a longitudinal sectional view of the push button device in the present embodiment shown in FIG. 5 is a plan view of the keypad member of FIG. 4, and FIG. 6 is a plan view of a state in which a push button member is disposed on the keypad member of FIG.

図１〜図６に示すように、本発明の実施の形態におけるコードレス電話装置は、ＴＡＭ（Ｔｅｌｅｐｈｏｎｅ Ａｎｓｗｅｒｉｎｇ Ｍａｃｈｉｎｅ；電話応答装置）機能付き電話装置であり、そのコードレス電話装置本体部１（ハンドセット部は図示していない。）の上面にＴＡＭ機能の操作を行うための押しボタン装置２を備える。   As shown in FIGS. 1 to 6, the cordless telephone apparatus according to the embodiment of the present invention is a telephone apparatus with a TAM (Telephone Answering Machine) function, and the cordless telephone apparatus main body 1 (handset unit is (Not shown) is provided with a push button device 2 for operating the TAM function.

押しボタン装置２は、コードレス電話装置本体部１の内部に配設されたプリント基板１ａ上に実装された光源としてのＬＥＤ（発光ダイオード）３と、このＬＥＤ３上に配設されたキーパッド部材としてのラバースイッチ４と、このラバースイッチ４の上に被せられる押しボタン部材としての樹脂ボタン５とを備える。樹脂ボタン５上には、ＴＡＭ機能を表示するための録音テープマーク６が印刷されている。   The push button device 2 includes an LED (light emitting diode) 3 as a light source mounted on a printed circuit board 1 a disposed inside the cordless telephone device main body 1 and a keypad member disposed on the LED 3. The rubber switch 4 and a resin button 5 as a push button member placed on the rubber switch 4 are provided. On the resin button 5, a recording tape mark 6 for displaying the TAM function is printed.

ラバースイッチ４は、プリント基板１ａの表面に接触状態で配置される板状部４ａと、ＬＥＤ３からの光を透過する導光部７が形成された弾性変位部４ｂと、弾性変位部４ｂと板状部４ａとを連結する薄肉状に形成された可撓連結部４ｃとから構成される。導光部７は、透明樹脂により録音テープマーク６の形状に合わせて略角柱状に形成されている。導光部７の光導出面７ａは、録音テープマーク６が形成された部分と同じ大きさである。なお、導光部７は全面が鏡面仕上げされている。図３に示すように、ラバースイッチ４に設けられた貫通穴に導光部７が挿入されている。   The rubber switch 4 includes a plate-like portion 4a disposed in contact with the surface of the printed circuit board 1a, an elastic displacement portion 4b in which a light guide portion 7 that transmits light from the LED 3 is formed, an elastic displacement portion 4b, and a plate It is comprised from the flexible connection part 4c formed in the thin-wall shape which connects the shape part 4a. The light guide portion 7 is formed in a substantially prismatic shape in accordance with the shape of the recording tape mark 6 using a transparent resin. The light guide surface 7a of the light guide 7 is the same size as the portion where the recording tape mark 6 is formed. The entire surface of the light guide 7 is mirror-finished. As shown in FIG. 3, the light guide 7 is inserted into a through hole provided in the rubber switch 4.

ラバースイッチ４は、例えばグレー系のシリコンゴム等の弾性樹脂により形成されている。なお、ラバースイッチ４の色は、グレー系に限らず、弾性変位部４ｂの導光部７内を通過する光が外部に漏れない色であれば良い。また、弾性変位部４ｂの内面以外の部分は別の色としても良い。   The rubber switch 4 is formed of an elastic resin such as gray silicone rubber. Note that the color of the rubber switch 4 is not limited to a gray color, and any color that does not leak light that passes through the light guide portion 7 of the elastic displacement portion 4b to the outside may be used. Further, portions other than the inner surface of the elastic displacement portion 4b may be different colors.

また、ラバースイッチ４の下面には、プリント基板１ａ上の接点部（図示せず。）と対向する位置に配置された接点部８が設けられている。   Further, on the lower surface of the rubber switch 4, there is provided a contact portion 8 disposed at a position facing a contact portion (not shown) on the printed circuit board 1a.

樹脂ボタン５は、光を透過する乳白色の透光性樹脂により、ラバースイッチ４の弾性変位部４ｂの導光部７の光導出面７ａを含む天端面８ａから外壁面８ｂの一部までを覆うようにキャップ状に形成されている。樹脂ボタン５の色についても、乳白色に限らず、光を透過する色であれば良い。なお、樹脂ボタン５の導光部７に対峙する部分の厚さは、２〜３ｍｍと薄く形成されている。樹脂ボタン５の下端部はフランジ状に形成されており、ボタンホルダ９によりプリント基板１ａ側に抑えられている。また、ボタンホルダ９上には上蓋１０と化粧パネル１１とが取り付けられている。   The resin button 5 is covered with milky white translucent resin that transmits light so as to cover from the top end surface 8a including the light guide surface 7a of the light guide portion 7 of the elastic displacement portion 4b of the rubber switch 4 to a part of the outer wall surface 8b. It is formed in a cap shape. The color of the resin button 5 is not limited to milky white and may be any color that transmits light. In addition, the thickness of the part facing the light guide part 7 of the resin button 5 is formed as thin as 2-3 mm. The lower end portion of the resin button 5 is formed in a flange shape, and is held to the printed circuit board 1 a side by the button holder 9. An upper lid 10 and a decorative panel 11 are attached on the button holder 9.

上記構成の押しボタン装置２では、ＬＥＤ３からの光がラバースイッチ４の導光部７から樹脂ボタン５の録音テープマーク６が印刷された操作面の一部に集中的に導かれ、この操作面の一部が集中的に照らされる（図２の波線による斜線部参照。）。したがって、この録音テープマーク６部分の輝度が増し、この録音テープマーク６の視認性が向上する。   In the push button device 2 configured as described above, the light from the LED 3 is intensively guided from the light guide 7 of the rubber switch 4 to a part of the operation surface on which the recording tape mark 6 of the resin button 5 is printed. Is intensively illuminated (refer to the shaded area in FIG. 2). Therefore, the luminance of the recording tape mark 6 is increased, and the visibility of the recording tape mark 6 is improved.

また、樹脂ボタン５の導光部７に対峙する部分の厚さが２〜３ｍｍと薄く形成して、導光部７の光導出面７ａを化粧パネル１１の表面近傍に配置しているので、ラバースイッチ４の導光部７の光導出面７ａからその面方向に漏れる光は化粧パネル１１の壁面に反射され、樹脂ボタン５の正面側へのみ照射され、樹脂ボタン５が明るく照らされる。   Moreover, since the thickness of the part facing the light guide part 7 of the resin button 5 is formed as thin as 2 to 3 mm and the light guide surface 7a of the light guide part 7 is arranged in the vicinity of the surface of the decorative panel 11, the rubber Light leaking from the light guide surface 7a of the light guide 7 of the switch 4 in the direction of the surface is reflected on the wall surface of the decorative panel 11 and is irradiated only to the front side of the resin button 5, and the resin button 5 is illuminated brightly.

また、樹脂ボタン５は、ラバースイッチ４の導光部７に対峙する部分の厚さが２〜３ｍｍと薄いので、導光部７から導かれる光が透過しやすい。また、これにより、光導出面７ａが樹脂ボタン５の操作面の近傍に配置されることになり、樹脂ボタン５の操作面の輝度が向上している。   Moreover, since the resin button 5 has a thin portion of the rubber switch 4 facing the light guide portion 7 as thin as 2 to 3 mm, the light guided from the light guide portion 7 is easily transmitted. Thereby, the light derivation surface 7a is arranged in the vicinity of the operation surface of the resin button 5, and the luminance of the operation surface of the resin button 5 is improved.

本発明は、内部に設けた光源により押しボタン部材の操作面を光らせる構造を有する押しボタン装置およびこれを用いた電話装置として有用である。特に、本発明は、押しボタン部材の一部に集中的に導光することにより操作面の輝度および視認性を向上させた押しボタン装置およびこれを用いた電話装置として好適である。   INDUSTRIAL APPLICABILITY The present invention is useful as a push button device having a structure in which an operation surface of a push button member is illuminated by a light source provided therein and a telephone device using the push button device. In particular, the present invention is suitable as a push button device in which the brightness and visibility of the operation surface are improved by intensively guiding light to a part of the push button member and a telephone device using the push button device.

本発明の実施の形態における押しボタン装置を備えた電話装置としてのコードレス電話装置本体部の斜視図The perspective view of the cordless telephone apparatus main-body part as a telephone apparatus provided with the pushbutton apparatus in embodiment of this invention 図１の押しボタン部分を拡大した平面図1 is an enlarged plan view of the push button portion of FIG. ラバースイッチと導光部の構成を示す縦断面図Longitudinal sectional view showing the configuration of rubber switch and light guide 図２に示す本実施の形態における押しボタン装置の縦断面図A longitudinal sectional view of the push button device in the present embodiment shown in FIG. 図４のキーパッド部材の平面図4 is a plan view of the keypad member of FIG. 図５のキーパッド部材上に押しボタン部材を配置した状態の平面図The top view of the state which has arrange | positioned the pushbutton member on the keypad member of FIG.

符号の説明Explanation of symbols

１ コードレス電話装置
１ａ プリント基板
２ 押しボタン装置
３ ＬＥＤ
４ ラバースイッチ
４ａ 板状部
４ｂ 弾性変位部
４ｃ 可撓連結部
５ 樹脂ボタン
６ 録音テープマーク
７ 導光部
７ａ 光導出面
８ 接点部
８ａ 天端面
８ｂ 外壁面
９ ボタンホルダ
１０ 上蓋
１１ 化粧パネル 1 Cordless telephone device 1a Printed circuit board 2 Push button device 3 LED
DESCRIPTION OF SYMBOLS 4 Rubber switch 4a Plate-shaped part 4b Elastic displacement part 4c Flexible connection part 5 Resin button 6 Recording tape mark 7 Light guide part 7a Light extraction surface 8 Contact part 8a Top end surface 8b Outer wall surface 9 Button holder 10 Top cover 11 Cosmetic panel

Claims (7)

光源からの光を透過する導光部が形成されたキーパッド部材と、
同キーパッド部材の導光部の光導出面から外壁面の一部までを覆うように形成された押しボタン部材とを有し、
前記導光部は、前記光源からの光を前記押しボタン部材の操作面の一部に導く形状としたことを特徴とする押しボタン装置。 A keypad member formed with a light guide that transmits light from the light source;
A push button member formed so as to cover from the light guide surface of the light guide portion of the keypad member to a part of the outer wall surface,
The push button device is characterized in that the light guide portion has a shape for guiding light from the light source to a part of an operation surface of the push button member. 前記押しボタン部材の操作面には当該押しボタン部材の機能を表示するためのマークが形成され、
前記導光部の光導出面は、前記マークが形成された部分と同じ大きさに形成したことを特徴とする請求項１記載の押しボタン装置。 A mark for displaying the function of the push button member is formed on the operation surface of the push button member,
The push button device according to claim 1, wherein the light guide surface of the light guide portion is formed to have the same size as a portion where the mark is formed. 前記導光部は、透明の樹脂材料により形成されたものである請求項１または２に記載の押しボタン装置。 The push button device according to claim 1, wherein the light guide portion is formed of a transparent resin material. 前記押しボタン部材は、前記キーパッド部材の導光部に対峙する部分の厚さが２〜３ｍｍである請求項１から３のいずれかに記載の押しボタン装置。 4. The push button device according to claim 1, wherein the push button member has a thickness of 2 to 3 mm at a portion facing the light guide portion of the keypad member. 5. 前記キーパッド部材は、前記キーパッド部材の一部の変形により対向する接点と接触可能となる接点部を有する請求項１記載の押しボタン装置。 The push button device according to claim 1, wherein the keypad member has a contact portion that can be brought into contact with an opposing contact by deformation of a part of the keypad member. 前記光源は、前記導後部の光導出面に対向するように配置した請求項１記載の押しボタン装置。 The push button device according to claim 1, wherein the light source is disposed so as to face the light guide surface of the guiding rear part. 請求項１から６のいずれか１項記載の押しボタン装置を備えた電話装置。 A telephone device comprising the push button device according to any one of claims 1 to 6.
JP2005119253A 2005-04-18 2005-04-18 Push button device and telephone device using the same Pending JP2006302555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

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Publications (1)

Publication Number Publication Date
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Family

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Family Applications (1)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051270A1 (en) * 2007-10-19 2009-04-22 Ziehl-Abegg AG Adjustment mechanism with integrated illuminated display
EP2835808A1 (en) 2013-08-09 2015-02-11 Omron Corporation Switch and keyboard provided therewith
WO2015118706A1 (en) 2014-02-07 2015-08-13 オムロン株式会社 Illuminated push-button switch and keyboard
JP2022091306A (en) * 2020-12-09 2022-06-21 カシオ計算機株式会社 Switch device and electronic device
WO2023171640A1 (en) * 2022-03-11 2023-09-14 株式会社Ｊｖｃケンウッド Push button illumination structure, and vehicle-mounted apparatus provided with same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2051270A1 (en) * 2007-10-19 2009-04-22 Ziehl-Abegg AG Adjustment mechanism with integrated illuminated display
EP2835808A1 (en) 2013-08-09 2015-02-11 Omron Corporation Switch and keyboard provided therewith
WO2015118706A1 (en) 2014-02-07 2015-08-13 オムロン株式会社 Illuminated push-button switch and keyboard
US10079125B2 (en) 2014-02-07 2018-09-18 Omron Corporation Illuminated push-button switch having fixed member and keyboard including same
JP2022091306A (en) * 2020-12-09 2022-06-21 カシオ計算機株式会社 Switch device and electronic device
JP7212850B2 (en) 2020-12-09 2023-01-26 カシオ計算機株式会社 Switch devices and electronic devices
US11594205B2 (en) 2020-12-09 2023-02-28 Casio Computer Co., Ltd. Switch device, electronic apparatus, and electronic musical instrument
WO2023171640A1 (en) * 2022-03-11 2023-09-14 株式会社Ｊｖｃケンウッド Push button illumination structure, and vehicle-mounted apparatus provided with same

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