JP4985123B2 - Electronics - Google Patents

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JP4985123B2
JP4985123B2 JP2007152164A JP2007152164A JP4985123B2 JP 4985123 B2 JP4985123 B2 JP 4985123B2 JP 2007152164 A JP2007152164 A JP 2007152164A JP 2007152164 A JP2007152164 A JP 2007152164A JP 4985123 B2 JP4985123 B2 JP 4985123B2
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case
light
resin sheet
elastic resin
receiving hole
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祐己 河村
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NEC Casio Mobile Communications Ltd
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Description

本発明は、光センサを備えた電子機器に関する。   The present invention relates to an electronic device including an optical sensor.

電子機器、特に、携帯電話機等の携帯型電子機器では、電池の消耗を防ぐために、光センサを設け、光センサで検出した明るさに応じて表示部の明るさを調整したり、キー操作部の照明の点灯を制御するようにしたものがある。例えば、特許文献１では、操作部と同一面内に周囲の照度を検出する光センサを設け、周囲が明るい場所ではキー操作部照明用のＬＥＤ（Light Emitting Diode）の点灯を止めるようにしている。
特開２００３−６０７４４号公報（図３） In electronic devices, particularly portable electronic devices such as mobile phones, a light sensor is provided to prevent battery consumption, and the brightness of the display unit is adjusted according to the brightness detected by the light sensor, or the key operation unit There is one that controls the lighting of the lighting. For example, in Patent Document 1, an optical sensor that detects ambient illuminance is provided in the same plane as the operation unit, and lighting of a key operation unit illumination LED (Light Emitting Diode) is stopped in a bright place. .
Japanese Patent Laying-Open No. 2003-60744 (FIG. 3)

特許文献１に開示されている構成では、電子機器のケースに光センサ用の受光穴が設けられるため、その受光穴から水、塵等がケース内部に浸入する可能性がある。このため、電子機器が、故障することや、誤作動を起こす可能性があった。   In the configuration disclosed in Patent Document 1, since the light receiving hole for the optical sensor is provided in the case of the electronic device, there is a possibility that water, dust or the like may enter the case from the light receiving hole. For this reason, the electronic device may break down or malfunction.

また、水、塵等の浸入を防ぐために受光穴を導光部材で密閉する構成にすると、組立作業性が悪くなるという問題があった。   Further, if the light receiving hole is sealed with a light guide member in order to prevent intrusion of water, dust and the like, there is a problem that the assembling workability is deteriorated.

本発明は、上記問題に鑑みてなされたものであり、機器ケースに光センサ用の受光穴を形成したものでありながら、防水性・防塵性を維持しつつ、組立作業性が悪化することのない電子機器を提供することを目的とする。   The present invention has been made in view of the above problems, and it is possible to reduce the assembly workability while maintaining waterproofness and dustproofness while forming a light receiving hole for an optical sensor in a device case. The purpose is to provide no electronic equipment.

上記目的を達成するため、本発明の第１の観点に係る電子機器は、
外光を受光するための受光穴と操作ボタンを露出するための開口を備える第１のケースと、
前記第１のケースと係合する第２のケースと、
前記第２のケースの第１のケースと係合する側に設けられた収納部と、
前記収納部内に配置されたキー基板と、
前記キー基板上或いは前記キー基板に併設された光センサと、
前記収納部を覆い且つ収納部をシールする弾性樹脂シートを備えたキーパッドと、
前記ケースの受光穴に対向する位置に配置され、前記受光穴に入射した光を前記弾性樹脂シートを介して前記光センサに導く導光手段と、を備え、
前記第２のケースは、前記弾性樹脂シートを固定するための溝を備え、
前記弾性樹脂シートは、前記溝に固定される突条部を備え、
前記導光手段は、
前記第１のケースの受光穴に一端が対向して配置された導光材と、
前記導光材の他端に対向し且つ鏡面処理された表面を有し、且つ、透過光性材料から構成され、前記弾性樹脂シートの一部を構成する樹脂部と、
から構成され、
前記光センサは、前記樹脂部の裏面に近接して配置されている、
ことを特徴とする。 In order to achieve the above object, an electronic device according to the first aspect of the present invention provides:
A first case having a light receiving hole for receiving external light and an opening for exposing an operation button;
A second case engaging the first case;
A storage portion provided on the side of the second case that engages with the first case;
A key board disposed in the storage unit;
An optical sensor on or attached to the key substrate;
A keypad including an elastic resin sheet that covers the storage portion and seals the storage portion;
A light guide means disposed at a position facing the light receiving hole of the case, and guiding light incident on the light receiving hole to the optical sensor through the elastic resin sheet,
The second case includes a groove for fixing the elastic resin sheet,
The elastic resin sheet includes a ridge portion fixed to the groove ,
The light guiding means includes
A light guide member having one end opposed to the light receiving hole of the first case;
A resin portion facing the other end of the light guide material and having a mirror-finished surface, made of a translucent material, and constituting a part of the elastic resin sheet;
Consisting of
The optical sensor is disposed close to the back surface of the resin portion.
It is characterized by that.

本発明の第２の観点に係る電子機器は、
外光を受光するための受光穴と操作ボタンを露出するための開口を備える第１のケースと、
前記第１のケースと係合する第２のケースと、
前記第２のケースの第１のケースと係合する側に設けられた収納部と、
前記収納部内に配置されたキー基板と、
前記キー基板上或いは前記キー基板に併設された光センサと、
前記収納部を覆い且つ収納部をシールする弾性樹脂シートを備えたキーパッドと、
前記ケースの受光穴に対向する位置に配置され、前記受光穴に入射した光を前記弾性樹脂シートを介して前記光センサに導く導光手段と、を備え、
前記第２のケースは、前記弾性樹脂シートを固定するための溝を備え、
前記弾性樹脂シートは、前記溝に固定される突条部を備え、
前記導光手段は、前記第１のケースの受光穴に一端が対向して配置され、前記弾性樹脂シートを貫通し、前記光センサに外光を導く導光材から構成され、
前記弾性樹脂シートは、前記導光材が貫通し、前記導光材を気密に嵌合する貫通孔を備える、
ことを特徴とする。 An electronic device according to a second aspect of the present invention is:
A first case having a light receiving hole for receiving external light and an opening for exposing an operation button;
A second case engaging the first case;
A storage portion provided on the side of the second case that engages with the first case;
A key board disposed in the storage unit;
An optical sensor on or attached to the key substrate;
A keypad including an elastic resin sheet that covers the storage portion and seals the storage portion;
A light guide means disposed at a position facing the light receiving hole of the case, and guiding light incident on the light receiving hole to the optical sensor through the elastic resin sheet,
The second case includes a groove for fixing the elastic resin sheet,
The elastic resin sheet includes a ridge portion fixed to the groove,
The light guide means is composed of a light guide material that is disposed so that one end thereof faces the light receiving hole of the first case, penetrates the elastic resin sheet, and guides external light to the optical sensor,
The elastic resin sheet includes a through hole through which the light guide material penetrates and the light guide material is fitted in an airtight manner.
It is characterized by that.

本発明によれば、電子機器の防水性・防塵性を維持しつつ、組立作業性が悪化することもない。   ADVANTAGE OF THE INVENTION According to this invention, assembly workability | operativity does not deteriorate, maintaining the waterproofness and dustproofness of an electronic device.

本発明の実施形態に係る携帯電話機について図１及び図２を参照して説明する。   A mobile phone according to an embodiment of the present invention will be described with reference to FIGS.

本実施形態に係る携帯電話機１は、図１に示すように、折りたたみ式であり、表示側筐体１１と、操作側筐体１２と、を備える。   As shown in FIG. 1, the mobile phone 1 according to the present embodiment is a foldable type, and includes a display-side casing 11 and an operation-side casing 12.

表示側筐体１１は、数字や文字等が表示される部分であり、操作側筐体１２に対して開閉可能なヒンジ構造により連結される。表示側筐体１１は、ディスプレイと、配線基板と、通信用アンテナと、通話用スピーカ等と、を備える。   The display-side casing 11 is a portion where numbers, characters, and the like are displayed, and is connected to the operation-side casing 12 by a hinge structure that can be opened and closed. The display-side housing 11 includes a display, a wiring board, a communication antenna, a call speaker, and the like.

操作側筐体１２は、操作者が電話番号や文字等を入力する部分であり、図２に示すように、上ケース２と、キーパッド３と、キー基板４と、回路基板５と、下ケース６と、を備える。   The operation side housing 12 is a part where an operator inputs a telephone number, characters, and the like. As shown in FIG. 2, the upper case 2, the keypad 3, the key board 4, the circuit board 5, and the lower case A case 6.

上ケース２（第１のケース）は、回路基板５等を収納した下ケース６と係合するカバーであり、プラスチック等の絶縁性樹脂から構成される。上ケース２は、図２に示すように、受光穴２１と、ボタン穴２２と、を備えるように成型される。   The upper case 2 (first case) is a cover that engages with the lower case 6 that houses the circuit board 5 and the like, and is made of an insulating resin such as plastic. As shown in FIG. 2, the upper case 2 is molded to include a light receiving hole 21 and a button hole 22.

受光穴２１は、携帯電話機１の周囲の照度を検出するために設けられた部分である。受光穴２１は、後述する導光材３１の凸部３１ａが挿入される。   The light receiving hole 21 is a portion provided for detecting the illuminance around the mobile phone 1. The light receiving hole 21 is inserted with a convex portion 31a of a light guide material 31 to be described later.

ボタン穴２２は、キーパッド３の操作ボタン３２を露出させるためのものであり、図２に示すように、複数設けられる。   The button holes 22 are for exposing the operation buttons 32 of the keypad 3, and a plurality of button holes 22 are provided as shown in FIG.

キーパッド３は、図２及び図３に示すように、導光材３１と、操作ボタン３２と、補強板３３と、ラバーシート３４と、を備える。   As shown in FIGS. 2 and 3, the keypad 3 includes a light guide material 31, operation buttons 32, a reinforcing plate 33, and a rubber sheet 34.

導光材３１は、上ケース２の受光穴２１を通過した光を、後述する光センサ４１まで導入させるための部材であり、全体がアクリル樹脂等の比較的透光性の高い材料により形成される。導光材３１は、図３及び図４に示すように、受光穴２１に挿入される凸部３１ａと、受光穴２１の周縁部に当接する平坦部３１ｂと、を備えるよう山型に成型される。   The light guide material 31 is a member for introducing light that has passed through the light receiving hole 21 of the upper case 2 to the optical sensor 41 described later, and is entirely formed of a material having relatively high translucency such as acrylic resin. The As shown in FIGS. 3 and 4, the light guide material 31 is molded into a mountain shape so as to include a convex portion 31 a inserted into the light receiving hole 21 and a flat portion 31 b that contacts the peripheral edge of the light receiving hole 21. The

操作ボタン３２は、操作者が電話番号や文字等を入力するための部品であり、プラスチック等から構成される。操作ボタン３２は、ラバーシート３４に接着剤等により貼付された複数のボタン（キートッププレート）を備え、各ボタンには数字や記号が印刷されている。操作ボタン３２が押下されると、キーパッド３の背面がキー基板４の後述するスイッチ４３を押し、文字等が入力される。   The operation button 32 is a part for an operator to input a telephone number, characters, and the like, and is made of plastic or the like. The operation buttons 32 include a plurality of buttons (key top plates) attached to the rubber sheet 34 with an adhesive or the like, and numbers and symbols are printed on each button. When the operation button 32 is pressed, the back of the keypad 3 pushes a switch 43 (to be described later) on the key board 4 so that characters and the like are input.

補強板３３は、ラバーシート３４を張った状態に保持するための部品であり、薄いステンレス板等から構成される。補強板３３には、ラバーシート３４に貼付けられる複数のボタンの貼付け位置に対応して貫通孔が形成されており、複数のボタンは、ラバーシート３４との間に補強板３３を挟んだ状態でラバーシート３４に貼付けられている。   The reinforcing plate 33 is a component for holding the rubber sheet 34 in a stretched state, and is composed of a thin stainless plate or the like. In the reinforcing plate 33, through holes are formed corresponding to the positions where a plurality of buttons to be attached to the rubber sheet 34 are attached, and the plurality of buttons are sandwiched between the rubber sheet 34 and the reinforcing plate 33. The rubber sheet 34 is pasted.

ラバーシート３４は、透光性を有する弾性樹脂であり、例えば、シリコンゴム等から構成され、図３及び図４に示すように、導光材３１と、操作ボタン３２と、が接着剤等により貼付される。操作ボタン３２は、前述したように、補強板３３に形成された貫通孔部で貼付けられ、導光材３１は、平坦部３１ｂの下面部で貼付けられる。   The rubber sheet 34 is an elastic resin having translucency, and is made of, for example, silicon rubber. As shown in FIGS. 3 and 4, the light guide material 31 and the operation buttons 32 are made of an adhesive or the like. Affixed. As described above, the operation button 32 is pasted at the through-hole portion formed in the reinforcing plate 33, and the light guide material 31 is pasted at the lower surface portion of the flat portion 31b.

ラバーシート３４は、図４に示すように、導光材３１が貼付けられる接着部３４ａのほぼ中心部に光透過部３４ｂを備える。光透過部３４ｂは、導光材３１を通過した光を後述する光センサ４１まで透過させる部分であり、光透過部３４ｂの表面は、光の屈折・散乱を防止するため、鏡面処理されている。この鏡面処理は、光透過部３４ｂの上下両表面に施すのがより望ましい。 As shown in FIG. 4, the rubber sheet 34 includes a light transmission part 3 4 b at substantially the center of the adhesive part 3 4 a to which the light guide material 31 is attached. The light transmitting portion 3 4 b is a portion that transmits light that has passed through the light guide material 31 to an optical sensor 41 to be described later. The surface of the light transmitting portion 3 4 b is a mirror surface to prevent light from being refracted and scattered. Has been processed. This mirror surface treatment is more preferably performed on both the upper and lower surfaces of the light transmitting portion 3 4 b.

また、ラバーシート３４は、その周縁部の下面側に突条部３４ｃを備える。この突条部３４ｃは全周に亘って形成されており、図５に示すように、後述する下ケース６に形成された溝６３に嵌め込まれる。   Moreover, the rubber sheet 34 is provided with a protrusion 34c on the lower surface side of the peripheral edge thereof. The protrusion 34c is formed over the entire circumference, and is fitted into a groove 63 formed in the lower case 6 described later, as shown in FIG.

キー基板４は、銅箔など導電体で回路配線を構成させたフレキシブル基板に、タクトスイッチのような薄型のスイッチ３４を複数取り付けたものである。なお、このキー基板４は、図２に示すように、スイッチ３４の他に、光センサ４１と、複数のＬＥＤ４２と、を備える。キー基板４は、回路基板５に接続され、スイッチ４３の押下による電気信号や、光センサからの電気信号等を回路基板５に伝達し、また、回路基板５から発せられたＬＥＤ４２を発光させる電気信号等を伝達する。   The key substrate 4 is obtained by attaching a plurality of thin switches 34 such as tact switches to a flexible substrate in which circuit wiring is constituted by a conductor such as copper foil. As shown in FIG. 2, the key board 4 includes an optical sensor 41 and a plurality of LEDs 42 in addition to the switch 34. The key board 4 is connected to the circuit board 5 and transmits an electric signal generated by pressing the switch 43, an electric signal from an optical sensor, and the like to the circuit board 5 and causes the LED 42 emitted from the circuit board 5 to emit light. Transmit signals, etc.

光センサ４１は、周囲の照度を検知し、照度の強さを電圧に変換する部品であり、導光材３１及び光透過部３ｂを通過した光の照度に対応する電圧を出力する。光センサ４１が出力した電圧の電気信号が回路基板５に送られ、回路基板５において、出力電圧が閾値以上か否か（周囲が明るいか・暗いか）が判別され、閾値以上（周囲が暗い）と判別された場合には、ＬＥＤ４２が発光される。   The optical sensor 41 is a component that detects the ambient illuminance and converts the intensity of the illuminance into a voltage, and outputs a voltage corresponding to the illuminance of the light that has passed through the light guide member 31 and the light transmitting portion 3b. An electric signal of the voltage output from the optical sensor 41 is sent to the circuit board 5, and it is determined whether or not the output voltage is equal to or higher than the threshold value (whether the surrounding is bright or dark). ), The LED 42 emits light.

ＬＥＤ４２は、一般に市販された順方向に電圧を加えた際に発光する半導体素子である。ＬＥＤ４２は、操作者が操作ボタン３２を押した場合や、周囲が暗いと判別された場合に、点灯する。   The LED 42 is a semiconductor element that emits light when a voltage is applied in the forward direction that is generally commercially available. The LED 42 is lit when the operator presses the operation button 32 or when it is determined that the surrounding is dark.

スイッチ４３は、操作ボタン３２の押下を検知する部分であり、操作ボタン３２の背面の位置するように配置される。操作ボタン３２が押下された場合、操作ボタン３２がスイッチ４３に接触し、スイッチ４３が発する押下検知信号がキー基板４に接続された回路基板５へと送られる。   The switch 43 is a part that detects pressing of the operation button 32, and is arranged so as to be positioned on the back surface of the operation button 32. When the operation button 32 is pressed, the operation button 32 comes into contact with the switch 43, and a press detection signal generated by the switch 43 is sent to the circuit board 5 connected to the key board 4.

回路基板５は、キー基板４やコネクタ等から送られる電気信号を処理する基板であり、電気絶縁性の基板表面に導電性材料で回路が形成され、マイク５１、コネクタ等の電子部品が複数実装される。これらの電子部品の殆どは、下ケース６と対向する側の面に搭載されているが、マイク５１は、上ケース２と対向する側の面に搭載されている。このマイク５１は、その詳細は図示していないが、上端面に防水シートが貼り付けられた筒状のホルダで覆われており、筒状のホルダの上端部がラバーシート３４に形成された貫通孔３５に圧入されている。   The circuit board 5 is a board for processing an electric signal sent from the key board 4 or a connector. A circuit is formed of a conductive material on the surface of the electrically insulating board, and a plurality of electronic components such as a microphone 51 and a connector are mounted. Is done. Most of these electronic components are mounted on the surface facing the lower case 6, but the microphone 51 is mounted on the surface facing the upper case 2. Although not shown in detail, the microphone 51 is covered with a cylindrical holder with a waterproof sheet attached to the upper end surface, and the upper end of the cylindrical holder is formed in the rubber sheet 34. It is press-fitted into the hole 35.

下ケース６（第２のケース）は、回路基板５等を収納するためのケースであり、プラスチック等の絶縁性樹脂から構成される。下ケース６は、回路基板５等を収納する収納部６１を備え、且つ収納部６１を形成する周壁部６２の上端面に前述したラバーシート３４の突条部３４ｃが嵌め込まれる溝６３を有するように成型される。   The lower case 6 (second case) is a case for housing the circuit board 5 and the like, and is made of an insulating resin such as plastic. The lower case 6 includes a storage portion 61 that stores the circuit board 5 and the like, and has a groove 63 into which the above-described protrusion 34c of the rubber sheet 34 is fitted in the upper end surface of the peripheral wall portion 62 that forms the storage portion 61. To be molded.

次に、上記構成の操作側筐体１２を組み立てる方法について図２及び図５を参照して説明する。
まず、キー基板４を回路基板５に接続する。そして、キー基板４が接続された回路基板５を、下ケース６の収納部６１内に設けられているボス６５にネジ止めする。 Next, a method for assembling the operation side housing 12 having the above-described configuration will be described with reference to FIGS.
First, the key board 4 is connected to the circuit board 5. Then, the circuit board 5 to which the key board 4 is connected is screwed to a boss 65 provided in the storage portion 61 of the lower case 6.

次に、キー基板４の上からキーパッド３を被せ、キーパッド３（より正確には、ラバーシート３４）の周縁部に形成されている突条部３４ｃを下ケース６に形成されている溝６３に圧入し、また、ラバーシート３４に形成されている貫通孔３５をマイク５１の筒状のホルダの上端部に嵌める。これにより、収納部６１はキーパッド３のラバーシート３４により覆われ、収納部６１内に水や埃が入らない状態となる。   Next, the keypad 3 is put on the key board 4, and the protrusion 34 c formed on the peripheral edge of the keypad 3 (more precisely, the rubber sheet 34) is formed in the groove formed in the lower case 6. The through hole 35 formed in the rubber sheet 34 is fitted into the upper end portion of the cylindrical holder of the microphone 51. As a result, the storage unit 61 is covered with the rubber sheet 34 of the keypad 3, so that water and dust do not enter the storage unit 61.

最後に、上ケース２を取り付ける。この上ケース２を取り付けは、上ケース２においてヒンジ側とは反対側の端部に形成されている係合爪（図示せず）を下ケース６の対応箇所に形成されている係合凹部（図示せず）に引っ掛けた状態で、キーパッド３の上方から上ケース２を被せ、収納部６１の外側に設けられているボス６５にネジ止めすることにより行われる。なお、ネジ止めする際には、表示側筐体１１と操作側筐体１２とを連結するヒンジに設けられている操作側筐体１２への取り付け部のネジ穴６４をボス６５に位置合わせし、上ケース２とボス６５との間に取り付け部を挟む形でネジ止めする。   Finally, the upper case 2 is attached. When the upper case 2 is attached, an engaging claw (not shown) formed at the end of the upper case 2 opposite to the hinge side is provided with an engaging recess ( The upper case 2 is covered from above the keypad 3 in a state of being hooked on the keypad 3 and screwed to a boss 65 provided outside the storage portion 61. When screwing, the screw hole 64 of the attachment portion to the operation side case 12 provided on the hinge connecting the display side case 11 and the operation side case 12 is aligned with the boss 65. Then, the upper case 2 and the boss 65 are screwed in such a manner that an attachment portion is sandwiched between them.

以上説明したように、導光材３１はキーパッド３のラバーシート３４に取り付けられ、ラバーシート３４が収納部６１をシールする構成であるので、受光穴２１及びボタン穴２２からケース内部に水、埃等が浸入するのを防ぐことができ、また、組立作業性が悪化することもない。   As described above, since the light guide 31 is attached to the rubber sheet 34 of the keypad 3 and the rubber sheet 34 seals the storage portion 61, water, from the light receiving hole 21 and the button hole 22 to the inside of the case, Dust and the like can be prevented from entering, and assembly workability is not deteriorated.

次に、携帯電話機１の周囲の光が、受光穴２１から光センサ４１に到達するまでの経路について図５を参照して説明する。
まず、受光穴２１から視認される導光材３１の凸部３１ａから入った光は、導光材３１を通過し、ラバーシート３４の光透過部３４ｂの表面まで到達する。 Next, a path from the surrounding light of the mobile phone 1 to the optical sensor 41 from the light receiving hole 21 will be described with reference to FIG.
First, the light that has entered from the convex portion 31 a of the light guide material 31 that is visible from the light receiving hole 21 passes through the light guide material 31 and reaches the surface of the light transmission portion 3 4 b of the rubber sheet 34.

次に、導光材３１を通過した光は、光透過部３４ｂの表面が鏡面処理されているため、屈折・散乱されることなく光透過部３４ｂを通過し、光センサ４１とキーパッド３との接触面まで到達する。 Then, light passing through the Shirubekozai 3 1, since the surface of the light transmitting portion 3 4 b is mirror-finished, passes through the light transmitting portion 3 4 b without being refracted and scattered, the light sensor 41 To the contact surface with the keypad 3.

最後に、光透過部３ｂを通過した光は、光センサ４１の光感知部に到達し、周囲の照度が判断される。   Finally, the light that has passed through the light transmission part 3b reaches the light sensing part of the light sensor 41, and the ambient illuminance is determined.

なお、本発明は上記実施の形態に限定されず、種々の変形及び応用が可能である。   In addition, this invention is not limited to the said embodiment, A various deformation | transformation and application are possible.

例えば、図６に示すように、ラバーシート３４を貫通させ、該貫通部に導光材３１を埋め込む構造としてもよい。この場合、ラバーシート３４は透光性を有する必要は無い。つまり、弾性を有する樹脂であればよい。
また、上ケースに形成する操作ボタン用の穴は、複数の操作ボタンが単一の大きな開口から露出する構成にしてもよい。 For example, as shown in FIG. 6, it is good also as a structure which penetrates the rubber sheet 34 and embeds the light guide material 31 in this penetration part. In this case, the rubber sheet 34 does not need to have translucency. That is, any resin having elasticity may be used.
The hole for the operation button formed in the upper case may be configured such that a plurality of operation buttons are exposed from a single large opening.

また、上記実施の形態では、携帯電話機を例に説明したが、本発明は、ＰＤＡ（Personal Digital Assistant）やノートパソコン等、キーパッドと光センサを備えた電子機器に適用可能である。   In the above embodiment, a mobile phone has been described as an example. However, the present invention can be applied to an electronic device including a keypad and an optical sensor, such as a PDA (Personal Digital Assistant) or a notebook computer.

また、上記実施の形態では、光センサ４１が検出した照度に基づいて、キー操作部のバックライトであるＬＥＤ４３の点灯を制御するようにしたが、ディスプレイがエレクトロルミネッセンスのような輝度調整が可能な素子で構成されている場合や、輝度調整が可能なバックライトを備えた液晶ディスプレイである場合には、光センサ４１が検出した照度に基づいてその輝度を調整することが可能であるので、本発明は、このようなディプレイを備えた電子機器にも適用を可能である。   Moreover, in the said embodiment, although lighting of LED43 which is a backlight of a key operation part was controlled based on the illumination intensity detected by the optical sensor 41, the display can adjust brightness | luminance like electroluminescence. In the case of a liquid crystal display having a backlight that can be adjusted in luminance when it is composed of elements, the luminance can be adjusted based on the illuminance detected by the optical sensor 41. The invention can also be applied to an electronic device having such a display.

光センサ４１は、キー基板４上だけでなく、キーパッド３に併設される等、配置位置は任意である。   The arrangement position of the optical sensor 41 is arbitrary as well as on the keypad 3 as well as on the key substrate 4.

本発明の実施形態に係る携帯電話機の全体図である。1 is an overall view of a mobile phone according to an embodiment of the present invention. 図１に示した携帯電話機における操作側筐体の分解斜視図である。It is a disassembled perspective view of the operation side housing | casing in the mobile telephone shown in FIG. キーパッドに貼付される導光材周辺部の拡大図である。It is an enlarged view of the light guide material periphery part affixed on a keypad. 図３のａ−ａ線での断面図である。It is sectional drawing in the aa line of FIG. キーパッドを携帯電話機に取り付けた状態を示す図である。It is a figure which shows the state which attached the keypad to the mobile telephone. 導光材取り付けの変形例を示す図である。It is a figure which shows the modification of light guide material attachment.

符号の説明Explanation of symbols

１…携帯電話機、１１…表示側筐体、１２…操作側筐体、２…上ケース、２１…受光穴、２２…ボタン穴、３…キーパッド、３１…導光材、３１ａ…凸部、３１ｂ…平坦部、３２…操作ボタン、３３…補強板、３４…ラバーシート、３４ａ…接着部、３４ｂ…光透過部、３４ｃ…突条部、４…キー基板、４１…光センサ、４２…ＬＥＤ、４３…スイッチ、５…回路基板、５１…マイク、６…下ケース、６１…収納部、６２…周壁部、６３…溝、６４…ネジ穴、６５…ボス DESCRIPTION OF SYMBOLS 1 ... Mobile phone, 11 ... Display side housing | casing, 12 ... Operation side housing | casing, 2 ... Upper case, 21 ... Light receiving hole, 22 ... Button hole, 3 ... Keypad, 31 ... Light guide material, 31a ... Projection part, 31b ... Flat part, 32 ... Operation button, 33 ... Reinforcement plate, 34 ... Rubber sheet, 34a ... Adhesion part, 34b ... Light transmission part, 34c ... Projection part, 4 ... Key substrate, 41 ... Optical sensor, 42 ... LED , 43 ... switch, 5 ... circuit board, 51 ... microphone, 6 ... lower case, 61 ... storage part, 62 ... peripheral wall part, 63 ... groove, 64 ... screw hole, 65 ... boss

Claims (2)

外光を受光するための受光穴と操作ボタンを露出するための開口を備える第１のケースと、
前記第１のケースと係合する第２のケースと、
前記第２のケースの第１のケースと係合する側に設けられた収納部と、
前記収納部内に配置されたキー基板と、
前記キー基板上或いは前記キー基板に併設された光センサと、
前記収納部を覆い且つ収納部をシールする弾性樹脂シートを備えたキーパッドと、
前記ケースの受光穴に対向する位置に配置され、前記受光穴に入射した光を前記弾性樹脂シートを介して前記光センサに導く導光手段と、を備え、
前記第２のケースは、前記弾性樹脂シートを固定するための溝を備え、
前記弾性樹脂シートは、前記溝に固定される突条部を備え、
前記導光手段は、
前記第１のケースの受光穴に一端が対向して配置された導光材と、
前記導光材の他端に対向し且つ鏡面処理された表面を有し、且つ、透過光性材料から構成され、前記弾性樹脂シートの一部を構成する樹脂部と、
から構成され、
前記光センサは、前記樹脂部の裏面に近接して配置されている、
ことを特徴とする電子機器。 A first case having a light receiving hole for receiving external light and an opening for exposing an operation button;
A second case engaging the first case;
A storage portion provided on the side of the second case that engages with the first case;
A key board disposed in the storage unit;
An optical sensor on or attached to the key substrate;
A keypad including an elastic resin sheet that covers the storage portion and seals the storage portion;
A light guide means disposed at a position facing the light receiving hole of the case, and guiding light incident on the light receiving hole to the optical sensor through the elastic resin sheet,
The second case includes a groove for fixing the elastic resin sheet,
The elastic resin sheet includes a ridge portion fixed to the groove ,
The light guiding means includes
A light guide member having one end opposed to the light receiving hole of the first case;
A resin portion facing the other end of the light guide material and having a mirror-finished surface, made of a translucent material, and constituting a part of the elastic resin sheet;
Consisting of
The optical sensor is disposed close to the back surface of the resin portion.
An electronic device characterized by that. 外光を受光するための受光穴と操作ボタンを露出するための開口を備える第１のケースと、
前記第１のケースと係合する第２のケースと、
前記第２のケースの第１のケースと係合する側に設けられた収納部と、
前記収納部内に配置されたキー基板と、
前記キー基板上或いは前記キー基板に併設された光センサと、
前記収納部を覆い且つ収納部をシールする弾性樹脂シートを備えたキーパッドと、
前記ケースの受光穴に対向する位置に配置され、前記受光穴に入射した光を前記弾性樹脂シートを介して前記光センサに導く導光手段と、を備え、
前記第２のケースは、前記弾性樹脂シートを固定するための溝を備え、
前記弾性樹脂シートは、前記溝に固定される突条部を備え、
前記導光手段は、前記第１のケースの受光穴に一端が対向して配置され、前記弾性樹脂シートを貫通し、前記光センサに外光を導く導光材から構成され、
前記弾性樹脂シートは、前記導光材が貫通し、前記導光材を気密に嵌合する貫通孔を備える、
ことを特徴とする電子機器。 A first case having a light receiving hole for receiving external light and an opening for exposing an operation button;
A second case engaging the first case;
A storage portion provided on the side of the second case that engages with the first case;
A key board disposed in the storage unit;
An optical sensor on or attached to the key substrate;
A keypad including an elastic resin sheet that covers the storage portion and seals the storage portion;
A light guide means disposed at a position facing the light receiving hole of the case, and guiding light incident on the light receiving hole to the optical sensor through the elastic resin sheet,
The second case includes a groove for fixing the elastic resin sheet,
The elastic resin sheet includes a ridge portion fixed to the groove,
The light guide means is composed of a light guide material that is disposed so that one end thereof faces the light receiving hole of the first case, penetrates the elastic resin sheet, and guides external light to the optical sensor,
The elastic resin sheet includes a through hole through which the light guide material penetrates and the light guide material is fitted in an airtight manner.
It shall be the feature electronic equipment that.
JP2007152164A 2007-06-07 2007-06-07 Electronics Expired - Fee Related JP4985123B2 (en)

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