JP2000076954A - Structure of illuminated type knob - Google Patents
Structure of illuminated type knobInfo
- Publication number
- JP2000076954A JP2000076954A JP10245885A JP24588598A JP2000076954A JP 2000076954 A JP2000076954 A JP 2000076954A JP 10245885 A JP10245885 A JP 10245885A JP 24588598 A JP24588598 A JP 24588598A JP 2000076954 A JP2000076954 A JP 2000076954A
- Authority
- JP
- Japan
- Prior art keywords
- knob
- bearing
- display
- illuminated
- side knob
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000012780 transparent material Substances 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims description 5
- 229920006324 polyoxymethylene Polymers 0.000 claims description 4
- 229930182556 Polyacetal Natural products 0.000 claims description 3
- 229920006038 crystalline resin Polymers 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 7
- 239000003086 colorant Substances 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 description 9
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 230000003252 repetitive effect Effects 0.000 description 5
- 238000002788 crimping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Landscapes
- Switch Cases, Indication, And Locking (AREA)
- Push-Button Switches (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は照光式ノブの構造に
おいて、特に照明する各文字類を均一に照明し、さらに
スイッチ等との嵌合による連結部に加わる繰返操作のス
トレスと油によるソルベントクラック等の発生を防止す
る照光式ノブの構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an illuminated knob, particularly to uniformly illuminate each character to be illuminated, and to apply a stress of a repetitive operation applied to a connecting portion by fitting with a switch or the like and a solvent by oil. The present invention relates to a structure of an illuminated knob for preventing occurrence of cracks and the like.
【０００２】[0002]
【従来の技術】図３は従来の照光式ノブの構造図を示
す。照光式ノブは表示側ノブ１で形成され、該表示側ノ
ブ１の軸受け部１ａがスイッチ（またはボリューム）１
１の操作軸１１ａに嵌合して連結されており、スイッチ
１１を押圧操作するものである。また、この照光式ノブ
はプリント基板１０に実装された発光素子（ＬＥＤ）１
２より出される光が導光板３を通じて導かれ、表示側ノ
ブ１の文字類が照明されている。2. Description of the Related Art FIG. 3 shows the structure of a conventional illuminated knob. The illuminated knob is formed by a display-side knob 1, and a bearing 1 a of the display-side knob 1 has a switch (or volume) 1.
It is fitted and connected to the first operation shaft 11a, and presses the switch 11. The illuminated knob is a light emitting element (LED) 1 mounted on a printed circuit board 10.
The light emitted from 2 is guided through the light guide plate 3 and the characters on the display side knob 1 are illuminated.
【０００３】表示側ノブ１は表面に文字類２０ａ，２０
ｂが表示され、開口した裏面（内面）にはスイッチ１１
の操作軸１１ａを嵌合して連結するための軸受け突部１
ａが形成され、その周囲は空洞で肉厚が薄く均一に成形
されている。また、この表示側ノブ１は代表的な従来例
として２種類が用いられている。第１の例では、該表示
側ノブ１は透明な材料（ＰＣ樹脂）で成形され、表面は
文字類２０ａ，２０ｂを白色印刷した後、その上を全体
的に黒塗装し、さらに文字類２０ａ，２０ｂ上の該塗装
をレーザで剥離して、露出した白色印刷の部分、つまり
文字類が照明されるように成形されている。尚、本図で
は便宜上文字類２０ａ，２０ｂは黒色で表示してある。
この例は表示側ノブ１の表面文字類が中央部分２０ｂ
（軸受け部１ａの上部相当）にある場合に特に用いられ
る。これは肉厚の相違による照明輝度ムラを透明材料を
用いることで防いだものである。第２の例では、該表示
側ノブ１は乳白の材料（ＡＢＣ樹脂等）で成形され、表
面は塗装後に文字類をレーザで剥離して、露出した乳白
部分、つまり文字類が照明されるように成形されてい
る。この例は表示側ノブ１の表面文字類が中央部分２０
ｂ（軸受け部１ａの上部相当）にない場合に特に用いら
れる。これは軸受け部１ａの肉厚相違による影響で乳白
材料の顕著な照明輝度ムラが生じるためである。The display side knob 1 has characters 20a, 20
b is displayed, and a switch 11 is provided on the open back surface (inner surface).
Bearing projection 1 for fitting and connecting the operating shaft 11a of
a is formed, the periphery thereof is hollow, and the thickness is thin and uniform. As the display-side knob 1, two types are used as a typical conventional example. In the first example, the display-side knob 1 is formed of a transparent material (PC resin), the surface of which is printed with characters 20a and 20b in white, and then the entire surface is black-painted. , 20b are peeled off with a laser so that the exposed white printed portions, that is, the characters, are illuminated. In this figure, characters 20a and 20b are displayed in black for convenience.
In this example, the surface characters of the display side knob 1 are in the central portion 20b.
(Equivalent to the upper part of the bearing portion 1a). This is to prevent unevenness in illumination luminance due to the difference in thickness by using a transparent material. In the second example, the display-side knob 1 is formed of a milky white material (ABC resin or the like), and the surface is peeled off with a laser after painting so that the exposed milky white portion, that is, the character is illuminated. It is molded into. In this example, the surface characters of the display side knob 1 are in the central portion 20.
b (corresponding to the upper portion of the bearing portion 1a). This is because remarkable unevenness in illumination luminance of the milky white material occurs due to the influence of the difference in the thickness of the bearing portion 1a.
【０００４】導光体３は、プリント基板１０に実装され
たスイッチ１１の操作軸１１ａ用逃げ穴を形成し、表示
側ノブ１とプリント基板１０に実装された発光素子１２
との間の空間を埋めつくすように設けられ、該発光素子
１２からの光を該表示側ノブ１まで導光する透光性材料
で成形されたものである。The light guide 3 forms an escape hole for the operation shaft 11 a of the switch 11 mounted on the printed circuit board 10, and the display side knob 1 and the light emitting element 12 mounted on the printed circuit board 10 are formed.
The light emitting element 12 is formed so as to fill the space between the light emitting elements 12 and is formed of a translucent material that guides light from the light emitting element 12 to the display side knob 1.
【０００５】[0005]
【発明が解決しようとする課題】上述のように、従来の
表示側ノブ１で形成された照光式ノブは表示側ノブ１が
透明な材料（ＰＣ樹脂）で成形されているか、または乳
白の材料（ＡＢＣ樹脂等）で成形されているが、前者の
透明な材料（ＰＣ樹脂）で成形した場合は軸受け部１ａ
に加わる繰返操作のストレスや油によるソルベントクラ
ック等が発生し易く、また表面の文字類２０ａ，２０ｂ
を白色印刷した後、その上を塗装し、さらに文字類２０
ａ，２０ｂをレーザーで剥離して照明しているため、白
色印刷部にレーザーがあたり、焼けて色が変わるという
不具合が発生する恐れがあった。また、白色印刷するこ
とによりコストがかかっていた。そして後者の乳白の材
料（ＡＢＣ樹脂等）で成形した場合は表示側ノブ１の表
面文字類を中央部分２０ｂ（軸受け部１ａの上部相当）
に設けると、軸受け部１ａの肉厚相違による影響で乳白
材料の顕著な照明輝度ムラが起こる等の問題があった。As described above, in the illuminated knob formed by the conventional display-side knob 1, the display-side knob 1 is formed of a transparent material (PC resin) or a milky material. (ABC resin, etc.), but when the former is formed of a transparent material (PC resin), the bearing portion 1a
Cracks and the like due to the stress of the repetitive operation applied to the surface and oil, and the letters 20a and 20b on the surface
Is printed in white and then painted on top of it.
Since a and 20b are illuminated by being peeled off by a laser, the laser may hit the white printed portion, causing a problem that the color changes due to burning. In addition, the cost was increased due to white printing. When the latter is formed of a milky material (ABC resin or the like), the surface characters of the display side knob 1 are changed to the central portion 20b (corresponding to the upper portion of the bearing portion 1a).
In this case, there is a problem that uneven illumination brightness of the milky white material occurs due to the influence of the difference in the thickness of the bearing portion 1a.
【０００６】本発明の目的は上述のソルベントクラック
および照明輝度ムラ等を防ぐこと、及びコストダウンを
図ることにある。An object of the present invention is to prevent the above-described solvent crack, unevenness in illumination luminance, and the like, and to reduce costs.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に本発明は前記照光式ノブの構造において、基本部と、
該基本部の裏面より突出した軸受け部とを有する透明系
材料からなる軸受側ノブと、該軸受側ノブの表面を覆う
白色系材料からなる表示側ノブとで２色成形をなし、前
記表示側ノブの一部が肉厚の均一な表示部として照光さ
れてなることを特徴とするものである。In order to achieve the above object, the present invention provides a structure of the illuminated knob, which comprises:
A two-color molding of a bearing knob made of a transparent material having a bearing part protruding from the back surface of the basic part and a display knob made of a white material covering the surface of the bearing knob; A part of the knob is illuminated as a display unit having a uniform thickness.
【０００８】また、前記軸受側ノブは結晶樹脂材料ポリ
アセタールからなるものであることを特徴とするもので
ある。また、前記表示側ノブには前記軸受側ノブの裏面
に当接するリブが設けられ、該軸受側ノブを該表示側ノ
ブと該リブとで挟み込んでなることを特徴とするもので
ある。Further, the bearing-side knob is made of a crystalline resin material polyacetal. Further, the display-side knob is provided with a rib abutting on the back surface of the bearing-side knob, and the bearing-side knob is sandwiched between the display-side knob and the rib.
【０００９】[0009]
【実施例】本発明の実施例について、図面を参照して説
明する。図１は本発明の第１実施例における照光式ノブ
の構造図を示し、図２は本発明の第２実施例における照
光式ノブの構造図を示す。この照光式ノブの構造は電子
機器のパネル面に設けられ、押しボタンスイッチ（また
はボリューム）１１等の操作軸１１ａに連結して所定の
位置に押圧操作するもので、該ツマミ１１の表面の照明
する各文字類２０ａ，２０ｂを均一に照明し、さらにス
イッチ１１等との嵌合による連結部２ａに加わる繰返操
作のストレスや油によるソルベントクラック等の発生を
防止するために、材質の異なる表示側ノブ１と軸受側ノ
ブ２とをそれぞれ２色成形したものである。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a structural diagram of an illuminated knob according to a first embodiment of the present invention, and FIG. 2 is a structural diagram of an illuminated knob according to a second embodiment of the present invention. The structure of the illuminated knob is provided on a panel surface of an electronic device, and is connected to an operation shaft 11a such as a push button switch (or a volume) 11 and pressed to a predetermined position, thereby illuminating the surface of the knob 11. In order to uniformly illuminate each of the characters 20a and 20b, and to prevent the stress of the repetitive operation applied to the connecting portion 2a due to the fitting with the switch 11 or the like and the occurrence of solvent cracks or the like due to oil, display of different materials. The side knob 1 and the bearing side knob 2 are each formed in two colors.
【００１０】図１に示す第１実施例では、乳白の材料で
肉厚を均一に成形された表示側ノブ１と透明もしくは透
明に近い材料で肉厚を厚くした軸受部２ａを設けて、成
形された軸受側ノブ２とをそれぞれ２色成形したもの
で、照明輝度ムラおよび軸受部２ａに加わる繰返操作の
ストレスや油によるソルベントクラック等の発生を防止
するために、本発明を適用した一例である。In the first embodiment shown in FIG. 1, a display-side knob 1 formed of a milk-white material having a uniform thickness and a bearing portion 2a formed of a transparent or nearly transparent material and having a large thickness are provided. An example in which the present invention is applied to prevent the occurrence of illumination cracks and the like due to the uneven brightness of illumination, the stress of the repetitive operation applied to the bearing portion 2a and the oil, which are formed by molding the bearing-side knob 2 with two colors respectively. It is.
【００１１】表示側ノブ１は、表面には照明用文字類が
設けられ、裏面（内側）は開口した空洞に形成し、側面
と前面の外周壁は肉厚を薄く均一にした乳白の材料（Ａ
ＢＣ樹脂）で成形されている。またこの表示側ノブ１は
表面が黒色塗装された後に、文字類２０ａ，２０ｂ部を
レーザーで剥離し、該文字類２０ａ，２０ｂを地肌の乳
白材料で浮きだたせており、裏面（内側）は開口した空
洞にして、軸受側ノブ２が圧着成形される形状にされて
いる。この様に表示側ノブ１を白色系材料とすることに
より、白色印刷をわざわざ必要とせずコストを削減する
ことが出来る。The display-side knob 1 is provided with lighting characters on the front surface, is formed with an open cavity on the back surface (inside), and has a thin and uniform milky white material on the side and front outer peripheral walls. A
(BC resin). After the surface of the display-side knob 1 is painted black, the characters 20a and 20b are peeled off with a laser, and the characters 20a and 20b are raised with a milky white material. An open cavity is formed so that the bearing-side knob 2 is formed by crimping. By using the display-side knob 1 of a white material in this way, it is possible to reduce the cost without bothersome white printing.
【００１２】軸受側ノブ２は、略平面状（皿状）の基本
部と、基本部の裏面から垂直に突出し、その先端が開口
して、スイッチ１１の操作軸１１ａを嵌合して連結する
ための嵌合孔を設けた軸受け突部２ａが形成され、その
周囲は空洞で肉厚が薄く均一に成形されており、表面
（外面）は表示側ノブ１の裏面（内面）と同一形状に成
形されており、表示側ノブ１の裏面（内面）に圧着成形
される。The bearing-side knob 2 vertically projects from a substantially planar (dish-shaped) basic portion and a back surface of the basic portion, and has an opening at the tip thereof to engage and connect the operating shaft 11a of the switch 11. A projection 2a provided with a fitting hole is formed, the periphery thereof is hollow, the thickness is thin and uniform, and the surface (outer surface) has the same shape as the back surface (inner surface) of the display side knob 1. It is molded on the back surface (inner surface) of the display side knob 1 by pressure bonding.
【００１３】導光板３は、プリント基板１０に実装され
たスイッチ１１の操作軸１１ａ用逃げ穴を形成し、表示
側ノブ１とプリント基板１０に実装された発光素子１２
との間の空間を埋めつくすように設けられ、該発光素子
１２からの光を前記軸受側ノブ２（透明もしくは透明に
近い材料で成形したもの）を通じて、該表示側ノブ１ま
で導光する透光性材料で成形されたものである。このよ
うに本実施例では表示側ノブ１の肉厚を均一とすること
で軸受側ノブ２を介して導かれた光が表示側ノブ１によ
って均一に拡散することになる。更に、軸受側ノブ２を
透明系材料とすることで、光の透過性は肉厚にほとんど
関係がなくなるため、これら表示側ノブ１，軸受側ノブ
２の構成により、照明ムラを防止できる。また、発光素
子１２を軸受側ノブ２に近ずけることにより導光板３を
削除するようにしても良い。The light guide plate 3 forms a relief hole for an operation shaft 11 a of a switch 11 mounted on a printed circuit board 10, and has a display-side knob 1 and a light emitting element 12 mounted on the printed circuit board 10.
And the light from the light emitting element 12 is guided to the display side knob 1 through the bearing side knob 2 (formed of a transparent or nearly transparent material). It is formed of a light-sensitive material. As described above, in the present embodiment, the light guided through the bearing-side knob 2 is uniformly diffused by the display-side knob 1 by making the thickness of the display-side knob 1 uniform. Further, since the bearing-side knob 2 is made of a transparent material, the transmittance of light has almost no relation to the wall thickness. Therefore, the configuration of the display-side knob 1 and the bearing-side knob 2 can prevent illumination unevenness. Alternatively, the light guide plate 3 may be omitted by bringing the light emitting element 12 closer to the bearing knob 2.
【００１４】図２に示す第２実施例では、透明もしくは
透明に近い材料で肉厚を厚くした軸受部２ａを設けた軸
受側ノブ２を乳白の材料で肉厚を均一に成形された表示
側ノブ１で挟み込んで、それぞれを２色成形したもの
で、図１の第１実施例に示す照明輝度ムラおよびソルベ
ントクラック等の発生を防止する以外に、表示側ノブ１
と軸受側ノブ２との圧着成形強度を向上させるようにし
た一例である。表示側ノブ１は、第１実施例に機能が追
加されたもので、軸受側ノブ２を挟み込んで圧着成形強
度を向上させるために、裏面（内側）に断面がＨ型形状
のリブ１ａが数カ所設けられ、軸受側ノブ２を挟み込ん
で圧着成形される形状に成形されている。In the second embodiment shown in FIG. 2, a bearing-side knob 2 provided with a bearing portion 2a having a thicker thickness made of a transparent or almost transparent material is used for a display side having a uniform thickness formed of a milky material. It is sandwiched between the knobs 1 and molded in two colors, and in addition to preventing the unevenness of illumination luminance and the occurrence of solvent cracks as shown in the first embodiment of FIG.
This is an example in which the press-fit molding strength between the bearing and the bearing-side knob 2 is improved. The display-side knob 1 has a function added to that of the first embodiment, and has several ribs 1a having an H-shaped cross section on the back surface (inside) in order to sandwich the bearing-side knob 2 and improve the pressure bonding strength. It is formed in a shape that is provided and is press-fitted with the bearing-side knob 2 interposed therebetween.
【００１５】軸受側ノブ２は、第１実施例に機能が追加
されたもので、表示側ノブ１に挟み込まれて圧着成形強
度を向上させるために、表示側ノブ１に設けられた数カ
所のＨ形状リブ１ａと整合した位置に貫通穴が設けら
れ、表示側ノブ１に挟み込まれて圧着成形される形状に
成形されている。導光板３は、第１実施例と同一なので
説明を省略する。The bearing-side knob 2 has a function added to that of the first embodiment. In order to improve the crimp molding strength by being sandwiched between the display-side knobs 1, several bearings provided on the display-side knob 1 are provided. A through-hole is provided at a position aligned with the shape rib 1a, and is formed into a shape that is sandwiched by the display-side knob 1 and pressure-bonded. Since the light guide plate 3 is the same as that of the first embodiment, the description is omitted.
【００１６】さらに、第３実施例として、以上説明した
実施例の軸受側ノブ２を結晶樹脂材料ポリアセタール
（ＰＯＭ）を用いて成形することにより、該軸受側ノブ
２に設けられた軸受部２ａの肉厚を極度に厚くすること
なく、該軸受部２ａに加わる繰返操作のストレスによる
ソルベントクラック等の発生を防止出来る。Further, as a third embodiment, the bearing knob 2 of the above-described embodiment is molded using a crystalline resin material polyacetal (POM), so that the bearing portion 2a provided on the bearing knob 2 is formed. It is possible to prevent the occurrence of solvent cracks or the like due to the stress of the repetitive operation applied to the bearing portion 2a without extremely increasing the wall thickness.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
コストアップすることなく表面の文字類の照明輝度ムラ
の防止および軸受側ノブと表示側ノブとの圧着成形強度
を向上出来、さらに軸受側ノブの軸受部に加わる繰返操
作のストレスによるソルベントクラック等の発生を防止
出来る効果が得られる。As described above, according to the present invention,
Prevents unevenness in illumination brightness of characters on the surface and increases the crimping strength between the knob on the bearing and the knob on the display without increasing the cost. Solvent cracks, etc. due to the stress of repeated operations applied to the bearing of the knob on the bearing The effect that can prevent generation of is obtained.
【図１】本発明の第１実施例である照光式ノブの構造図
を示す。FIG. 1 is a structural view of an illuminated knob according to a first embodiment of the present invention.
【図２】本発明の第２実施例である照光式ノブの構造図
を示す。FIG. 2 is a structural view of an illuminated knob according to a second embodiment of the present invention.
【図３】従来の照光式ノブの構造図を示す。FIG. 3 is a structural view of a conventional illuminated knob.
１・・・表示側ノブ ２・・・軸受側ノブ ３・・・導光板 １０・・・プリント基板 １１・・・スイッチ（またはボリューム） １２・・・発行素子（ＬＥＤ） ２０ａ，２０ｂ・・・照明文字 DESCRIPTION OF SYMBOLS 1 ... Display side knob 2 ... Bearing side knob 3 ... Light guide plate 10 ... Printed circuit board 11 ... Switch (or volume) 12 ... Lighting element (LED) 20a, 20b ... Lighting character
Claims (3)
裏面側に対し光を照射して表面側の一部が表示部として
照光されてなる照光式ノブの構造において、 基本部と、該基本部の裏面側より突出した軸受け部とを
有する透明系材料からなる軸受側ノブと、該軸受側ノブ
の基本部の表面を覆う白色系材料からなる表示側ノブと
で２色成形をなし、前記表示側ノブの一部が肉厚の均一
な表示部として照光されてなることを特徴とする照光式
ノブの構造。1. An illuminated knob structure having a bearing portion projecting from a back surface side, and irradiating light to the back surface portion to illuminate a part of the front surface side as a display portion. A two-color molding is made of a bearing knob made of a transparent material having a bearing part protruding from the back side of the basic part and a display knob made of a white material covering the surface of the basic part of the bearing knob. And a part of the display-side knob is illuminated as a display part having a uniform thickness.
タールからなるものであることを特徴とする請求項１記
載の照光式ノブの構造。2. The illuminated knob structure according to claim 1, wherein said bearing-side knob is made of a polyacetal crystalline resin material.
本部の裏面に当接するリブが設けられ、該軸受側ノブを
該表示側ノブと該リブとで挟み込んでなることを特徴と
する請求項１または請求項２記載の照光式ノブの構造。3. The display-side knob is provided with a rib abutting on a back surface of a basic portion of the bearing-side knob, and the bearing-side knob is sandwiched between the display-side knob and the rib. The structure of the illuminated knob according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245885A JP2000076954A (en) | 1998-08-31 | 1998-08-31 | Structure of illuminated type knob |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10245885A JP2000076954A (en) | 1998-08-31 | 1998-08-31 | Structure of illuminated type knob |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000076954A true JP2000076954A (en) | 2000-03-14 |
Family
ID=17140263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10245885A Pending JP2000076954A (en) | 1998-08-31 | 1998-08-31 | Structure of illuminated type knob |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000076954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200450946Y1 (en) | 2008-07-15 | 2010-11-11 | 주식회사 현대오토넷 | Volume knob lighting |
| US9817704B2 (en) | 2009-02-25 | 2017-11-14 | Sony Corporation | Information processing apparatus, method, and program |
-
1998
- 1998-08-31 JP JP10245885A patent/JP2000076954A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200450946Y1 (en) | 2008-07-15 | 2010-11-11 | 주식회사 현대오토넷 | Volume knob lighting |
| US9817704B2 (en) | 2009-02-25 | 2017-11-14 | Sony Corporation | Information processing apparatus, method, and program |
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