JPWO2009008117A1 - Infrared signal transmitter - Google Patents

Infrared signal transmitter Download PDF

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JPWO2009008117A1
JPWO2009008117A1 JP2009522502A JP2009522502A JPWO2009008117A1 JP WO2009008117 A1 JPWO2009008117 A1 JP WO2009008117A1 JP 2009522502 A JP2009522502 A JP 2009522502A JP 2009522502 A JP2009522502 A JP 2009522502A JP WO2009008117 A1 JPWO2009008117 A1 JP WO2009008117A1
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infrared signal
screen
light emitting
emitting element
light guide
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JP4931998B2 (en
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公久 三浦
公久 三浦
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/1141—One-way transmission

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

機器本体であるパネル２の前面にスクリーン３を設け、前記パネル２内の発光素子５から発信される赤外線信号を前記スクリーン３を透過させるようにした赤外線信号送信機において、前記スクリーン３と一体に導光部６を形成すると共に、この導光部６の赤外線信号入口部６ａを前記発光素子５の発信部６ａに近接させてなる。In an infrared signal transmitter in which a screen 3 is provided on the front surface of a panel 2 which is a device main body and an infrared signal transmitted from a light emitting element 5 in the panel 2 is transmitted through the screen 3, the screen 3 is integrated with the screen 3. The light guide 6 is formed, and the infrared signal entrance 6 a of the light guide 6 is made close to the transmitter 6 a of the light emitting element 5.

Description

この発明は、赤外線を信号として送信する赤外線信号送信機に関する。   The present invention relates to an infrared signal transmitter that transmits infrared light as a signal.

赤外線は信号の伝送媒体として種々の機器に利用されている。機器のＯＮ、ＯＦＦ信号だけでなく、音声信号をのせて伝送する使い方もされている。現在考えられている赤外線信号送信機の例を図６、７、８に示す。これらは、例えばＤＶＤプレーヤー、ＴＶ受像機などに組み込まれているものである。   Infrared rays are used in various devices as a signal transmission medium. In addition to device ON / OFF signals, audio signals are also used for transmission. Examples of infrared signal transmitters currently considered are shown in FIGS. These are incorporated in, for example, a DVD player or a TV receiver.

図６に示す赤外線信号送信機１０１は、箱状のパネル（機器本体）１０２の前面にスクリーン１０３を設けてなる。パネル１０２内には基板１０４が設けられ、基板１０４上には砲弾型の発光素子（ＬＥＤ）１０５が設けられる一方、発光素子１０５の上方においてパネル１０２の前面部に、発光素子１０５からの赤外線信号を反射させるための反射面１０２ａが形成されている。発光素子１０５からの赤外線信号は、反射面１０２ａで反射され、スクリーン１０３を透過して前方へ送信される。赤外線信号の光路を符号１０６で示してある。このような技術は、例えば特許文献１の図１、図２などに示されている。   An infrared signal transmitter 101 shown in FIG. 6 is provided with a screen 103 on the front surface of a box-like panel (device main body) 102. A substrate 104 is provided in the panel 102, and a bullet-type light emitting element (LED) 105 is provided on the substrate 104, and an infrared signal from the light emitting element 105 is provided on the front surface of the panel 102 above the light emitting element 105. A reflecting surface 102a for reflecting the light is formed. The infrared signal from the light emitting element 105 is reflected by the reflecting surface 102a, transmitted through the screen 103, and transmitted forward. The optical path of the infrared signal is indicated by reference numeral 106. Such a technique is shown, for example, in FIGS.

図７に示す赤外線信号送信機２０１は、発光素子として面実装型の発光素子２０２を用いたもので、その他の構成は図６に示したものと同じである。面実装型の発光素子２０２は実装方向が水平か垂直の２方向のみに限られており、指定方向、つまり基板１０４上に、赤外線信号を送信したい方向に直接向けて設置することはできない。従って、発光素子２０２から上方に出力された赤外線信号を、反射面１０２ａで反射させ、スクリーン１０３を透過させて前方へ送信するようにしている。赤外線信号の光路を符号２０３で示している。   An infrared signal transmitter 201 shown in FIG. 7 uses a surface-mounted light emitting element 202 as a light emitting element, and the other configuration is the same as that shown in FIG. The surface mounting type light emitting element 202 is limited to only two directions of horizontal or vertical mounting, and cannot be installed directly on a designated direction, that is, a direction in which an infrared signal is desired to be transmitted on the substrate 104. Therefore, the infrared signal output upward from the light emitting element 202 is reflected by the reflecting surface 102a, transmitted through the screen 103, and transmitted forward. The optical path of the infrared signal is denoted by reference numeral 203.

また、図８に示す赤外線信号送信機３０１は、基板１０４の下側に、砲弾型の発光素子３０２を設け、発光素子３０２から直接赤外線信号をスクリーン１０３に発信するようにしたものである。赤外線信号の光路を符号３０３で示してある。砲弾型の発光素子３０２は、台座３０４を介して基板１０４上に設置される。台座３０４の形状、位置を調整することにより発光素子３０２からの赤外線信号の向きを設定するようにしている。その他の構成は図６に示したものと同じである。
なお、特許文献１の図３には、更に他の構成として、発光素子からの光信号を、光導管を用いて光信号用窓に導くようにした技術が開示されている。Further, an infrared signal transmitter 301 shown in FIG. 8 is provided with a bullet-type light emitting element 302 on the lower side of the substrate 104 so that an infrared signal is directly transmitted from the light emitting element 302 to the screen 103. The optical path of the infrared signal is indicated by reference numeral 303. The bullet-type light emitting element 302 is installed on the substrate 104 via a pedestal 304. The direction of the infrared signal from the light emitting element 302 is set by adjusting the shape and position of the pedestal 304. Other configurations are the same as those shown in FIG.
FIG. 3 of Patent Document 1 discloses, as still another configuration, a technique in which an optical signal from a light emitting element is guided to an optical signal window using an optical conduit.

特開２００２−３５２３７１号公報JP 2002-352371 A

しかし、図６、図７に示した従来の赤外線信号送信機１０１、２０１の構造では、パネル１０２などに反射面１０２ａを設けなければならず、反射面１０２ａの状態により反射した赤外線信号の減衰が発生しやすく、また赤外線信号は乱反射するために信号が弱くなってしまう。更に、反射板１０２ａとスクリーン１０３との間には空間があるので、ここでの赤外線信号の減衰もある。   However, in the structure of the conventional infrared signal transmitters 101 and 201 shown in FIGS. 6 and 7, the reflective surface 102a must be provided on the panel 102 or the like, and the reflected infrared signal is attenuated depending on the state of the reflective surface 102a. It is easy to generate, and since the infrared signal is irregularly reflected, the signal becomes weak. Furthermore, since there is a space between the reflector 102a and the screen 103, there is attenuation of the infrared signal here.

図８に示した従来の赤外線信号送信機３０１の構造では、赤外線信号光路３０３を安定させるために台座３０４が必要であり、構成部品が増えてしまう。また台座３０４の調整は難しく、組み立てに時間がかかり、生産性が悪い。
なお、特許文献１の図３などに記載のものでは、別部材としての光導管が必要であり、部品点数が増え、光導管の調整にも手間がかかるといった問題がある。In the structure of the conventional infrared signal transmitter 301 shown in FIG. 8, a base 304 is necessary to stabilize the infrared signal optical path 303, and the number of components increases. Further, it is difficult to adjust the pedestal 304, it takes time to assemble, and the productivity is poor.
In addition, in the thing described in FIG. 3 etc. of patent document 1, the optical conduit | pipe as a separate member is required, there exists a problem that a number of parts increases and adjustment of an optical conduit | pipe takes time.

この発明は、このような状況にかんがみてなされたもので、構造が簡単で部品点数も少なく、精度良く赤外線信号光路を設定することができ、しかも赤外線信号の減衰の少ない赤外線信号送信機を提供することを目的とする。   The present invention has been made in view of such a situation, and provides an infrared signal transmitter that is simple in structure, has a small number of parts, can accurately set an infrared signal optical path, and has little attenuation of an infrared signal. The purpose is to do.

この発明に係る赤外線信号送信機は、機器本体の前面にスクリーンを設け、前記機器本体内の発光素子から発信される赤外線信号を前記スクリーンを通して発信する赤外線信号発信機において、前記スクリーンと一体に導光部を形成すると共に、この導光部の端部である赤外線信号入口部を前記発光素子の赤外線信号送信部に近接させてなる。   An infrared signal transmitter according to the present invention is provided with a screen on the front surface of a device main body, and an infrared signal transmitter for transmitting an infrared signal transmitted from a light emitting element in the device main body through the screen. While forming an optical part, the infrared signal inlet part which is an edge part of this light guide part is made to adjoin to the infrared signal transmission part of the said light emitting element.

この発明に係る赤外線信号送信機によれば、赤外線信号の導光部をスクリーンと一体に形成し、しかもその赤外線信号入口部を発光素子の発光部に近接させるようにしたので、構造が簡単で部品点数も少なく、スクリーンを機器本体に組み付けるだけで、赤外線信号光路を精度良く設定することができ、かつ導光部と発光素子とが近接するので、赤外線信号の減衰を防ぐことができる。更に、導光部の形状を任意に設定することができるので、設計の自由度が大きく、赤外線信号の光路上の障害物を容易に回避するなどして所望の方向に赤外線信号を発信させることができる。   According to the infrared signal transmitter of the present invention, the infrared signal light guide portion is formed integrally with the screen, and the infrared signal inlet portion is brought close to the light emitting portion of the light emitting element, so the structure is simple. The number of parts is small, and the infrared signal optical path can be set with high precision simply by assembling the screen to the apparatus main body, and the light guide and the light emitting element are close to each other, so that attenuation of the infrared signal can be prevented. Furthermore, since the shape of the light guide unit can be arbitrarily set, the degree of freedom in design is large, and an infrared signal can be transmitted in a desired direction by easily avoiding an obstacle on the optical path of the infrared signal. Can do.

本発明の実施の形態１に係る赤外線信号送信機の断面図である。It is sectional drawing of the infrared signal transmitter which concerns on Embodiment 1 of this invention. 実施の形態１に係る赤外線信号送信機の外観図である。1 is an external view of an infrared signal transmitter according to Embodiment 1. FIG. 実施の形態１に係る赤外線信号送信機の他の例の断面図である。6 is a cross-sectional view of another example of the infrared signal transmitter according to Embodiment 1. FIG. 実施の形態１に係る赤外線信号送信機の他の例の断面図である。6 is a cross-sectional view of another example of the infrared signal transmitter according to Embodiment 1. FIG. 実施の形態２に係る赤外線信号送信機の断面図である。5 is a cross-sectional view of an infrared signal transmitter according to Embodiment 2. FIG. 従来の赤外線信号送信機の１例の断面図である。It is sectional drawing of an example of the conventional infrared signal transmitter. 従来の赤外線信号送信機の他の例の断面図である。It is sectional drawing of the other example of the conventional infrared signal transmitter. 従来の赤外線信号送信機の他の例の断面図である。It is sectional drawing of the other example of the conventional infrared signal transmitter.

以下、この発明をより詳細に説明するために、この発明を実施するための最良の形態について、添付の図面に従って説明する。
実施の形態１．
この発明に係る赤外線信号送信機の実施の形態１を図１、２に基づき説明する。図１は、実施の形態１に係る赤外線信号送信機の断面図であり、図２は赤外線信号送信機の概略外観図である。このような赤外線信号送信機は、例えばＤＶＤプレーヤー、ＴＶ受像機などに組み込まれる。赤外線信号には例えば音声信号がのせられる。Hereinafter, in order to describe the present invention in more detail, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
Embodiment 1 of an infrared signal transmitter according to the present invention will be described with reference to FIGS. 1 is a cross-sectional view of an infrared signal transmitter according to Embodiment 1, and FIG. 2 is a schematic external view of the infrared signal transmitter. Such an infrared signal transmitter is incorporated in, for example, a DVD player or a TV receiver. For example, an audio signal is carried on the infrared signal.

図２に示すように、この赤外線信号送信機１は、機器本体であるパネル２の前面にスクリーン３が設けられている。このスクリーン３の部分が、ＤＶＤプレーヤーなどの前面に位置する。図１に示すように、パネル２内には基板４が設けられており、この基板４上に、発光素子５が設けられる。この例では、面実装型の発光素子５が、平坦な発信部５ａを上向きにして設けられている。なお、図示はされていないが、基板４には、その他の電子部品が設置されている。   As shown in FIG. 2, the infrared signal transmitter 1 is provided with a screen 3 on the front surface of a panel 2 which is a device body. The portion of the screen 3 is located on the front surface of a DVD player or the like. As shown in FIG. 1, a substrate 4 is provided in the panel 2, and a light emitting element 5 is provided on the substrate 4. In this example, the surface-mounted light-emitting element 5 is provided with the flat transmitter 5a facing upward. Although not shown, other electronic components are installed on the substrate 4.

一方、スクリーン３の内側面には、導光部６がスクリーン３と一体的に形成されている。導光部６の平坦な端部は信号入口部６ａであり、発光素子５の発信部５ａに対面する如く近接して位置される。つまり、導光部６の信号入口部６ａと発光素子５の発信部５ａとは微小な隙間をもって対面されるか当接（接触）される。赤外線信号は、信号入口部６ａから導光部６の中に入り、導光部６の内壁面で反射し、更にスクリーン３を透過して外部へ発信される。この実施の形態では、赤外線信号は、やや上向きに発信されるようにしたものである。赤外線信号の光路を符号７で示す。つまり、導光部６は、その信号入口部６ａが発光素子５の発信部５ａに対面するように、位置を考慮しかつ発信方向を考慮してスクリーン３と一体に形成される。スクリーン３及び導光部６の材料としては、例えば透明なポリカーボネイト樹脂やＡＢＳ樹脂などが採用される。樹脂材料としてはそれ以外にも種々のものが採用可能である。   On the other hand, a light guide 6 is formed integrally with the screen 3 on the inner surface of the screen 3. The flat end of the light guide 6 is a signal entrance 6a, and is positioned so as to face the transmitter 5a of the light emitting element 5. That is, the signal inlet 6a of the light guide 6 and the transmitter 5a of the light emitting element 5 are faced or contacted (contacted) with a minute gap. The infrared signal enters the light guide 6 from the signal inlet 6a, is reflected by the inner wall surface of the light guide 6, and further transmits through the screen 3 to the outside. In this embodiment, the infrared signal is transmitted slightly upward. The optical path of the infrared signal is denoted by reference numeral 7. That is, the light guide portion 6 is formed integrally with the screen 3 in consideration of the position and the transmission direction so that the signal inlet portion 6a faces the transmission portion 5a of the light emitting element 5. As a material of the screen 3 and the light guide unit 6, for example, transparent polycarbonate resin or ABS resin is employed. Various other resin materials can be used.

この実施の形態１に係る赤外線信号送信機１では、発光素子５からの赤外線信号は、発信部５ａから直接導光部６へその信号入口部６ａから入り、導光部６内を反射して進み、スクリーン３を透過して前方やや上向きに発信される。赤外線信号は、損失の原因となる空間部を通過することなく発信されるので信号の損失は極めて少なくなる。   In the infrared signal transmitter 1 according to the first embodiment, the infrared signal from the light emitting element 5 enters the light guide unit 6 directly from the light emitting unit 5a through the signal entrance unit 6a and reflects inside the light guide unit 6. Goes forward and transmits through the screen 3 slightly forward. Since the infrared signal is transmitted without passing through the space causing the loss, the loss of the signal is extremely small.

図３には、この実施の形態１の赤外線信号送信機１の変形例に係る赤外線信号送信機２１を示す。この赤外線信号送信機２１は、赤外線信号を図２に示す状態でやや下向きに取り出すようにしたものである。赤外線信号をやや下向きに取り出すため、スクリーン３と一体に形成される導光部を図１に示したものとは異なる形状にしてある。つまり、スクリーン３と一体に形成する導光部２２を図１に示したものより湾曲させてある。導光部２２の信号入口部２２ａは平坦面となっており、基板４上に設けられた発光素子５の信号発信部６ａに近接して配置される。その他の構造は、図１に示したものと同じである。   In FIG. 3, the infrared signal transmitter 21 which concerns on the modification of the infrared signal transmitter 1 of this Embodiment 1 is shown. The infrared signal transmitter 21 extracts an infrared signal slightly downward in the state shown in FIG. In order to take out the infrared signal slightly downward, the light guide formed integrally with the screen 3 has a different shape from that shown in FIG. That is, the light guide 22 formed integrally with the screen 3 is curved from that shown in FIG. The signal entrance 22 a of the light guide 22 has a flat surface and is disposed close to the signal transmitter 6 a of the light emitting element 5 provided on the substrate 4. Other structures are the same as those shown in FIG.

この実施の形態１の変形例に係る赤外線信号送信機２１では、発光素子５の発信部５ａから出た赤外線信号は、信号入口部２２ａから直接導光部２２に入り、導光部２２内を反射して進み、スクリーン３を透過して前方やや下向きに発信される。赤外線信号の光路を符号２３で示す。赤外線信号は、損失の原因となる空間部を通過することなく発信されるので信号の損失は極めて少なくなる。   In the infrared signal transmitter 21 according to the modification of the first embodiment, the infrared signal output from the transmission unit 5a of the light emitting element 5 enters the light guide unit 22 directly from the signal inlet unit 22a and passes through the light guide unit 22. The reflected light travels through the screen 3 and is transmitted forward and slightly downward. The optical path of the infrared signal is denoted by reference numeral 23. Since the infrared signal is transmitted without passing through the space causing the loss, the loss of the signal is extremely small.

図４には実施の形態１に係る赤外線信号送信機１の更に他の変形例を示す。この実施の形態に係る赤外線信号送信機３１は、基板４の下側でスクリーン３からやや離れた位置に設けられた発光素子５からの赤外線信号を斜め上方に導くようにしたものである。設計上の都合などにより発光素子５を設ける場所が、スクリーン３から離れた箇所に限定される場合があり、そのような場合に対応したものである。スクリーン３と一体に形成される導光部３２は基板４の下側に延び、その平坦な信号入口部３２ａは、基板４の下面に設けた発光素子５の信号発信部６ａに近接する。導光部３２は、基板４上の部品をよけて発光素子５に直接近接する。   FIG. 4 shows still another modification of the infrared signal transmitter 1 according to the first embodiment. The infrared signal transmitter 31 according to this embodiment is configured to guide the infrared signal from the light emitting element 5 provided at a position slightly below the screen 3 below the substrate 4 obliquely upward. In some cases, the place where the light emitting element 5 is provided is limited to a place away from the screen 3 due to design reasons and the like. The light guide 32 formed integrally with the screen 3 extends below the substrate 4, and the flat signal inlet 32 a is close to the signal transmitter 6 a of the light emitting element 5 provided on the lower surface of the substrate 4. The light guide 32 avoids components on the substrate 4 and is in close proximity to the light emitting element 5.

この実施の形態１の変形例に係る赤外線信号送信機３１では、発光素子５からの赤外線信号は、発光素子５の発信部５ａからほぼ直接導光部３２へその信号入口部３２ａから入り、導光部３２内を反射して進み、スクリーン３を透過して前方やや上向きに発信される。赤外線信号の光路を符号３３で示す。赤外線信号は、損失の原因となる空間部を通過することなく発信されるので赤外線信号の損失は極めて少なくなる。   In the infrared signal transmitter 31 according to the modification of the first embodiment, the infrared signal from the light emitting element 5 enters the light guiding part 32 almost directly from the transmitting part 5a of the light emitting element 5 through the signal inlet part 32a, and is guided. The light is reflected in the light part 32, travels through the screen 3, and is transmitted slightly forward. The optical path of the infrared signal is indicated by reference numeral 33. Since the infrared signal is transmitted without passing through the space causing the loss, the loss of the infrared signal is extremely small.

従来の如く反射面を用いた場合には、赤外線信号の取り出し方向を変える場合には、発光素子を設ける位置、反射面の位置や傾きを変える必要がある。またこれらを変えても対応し切れない方向（角度）が存在し、対応不可能な場合もある。例えば、赤外線信号送信機を備えた機器が車載機である場合、その機器の車体への取り付け状態（角度）に合わせて赤外線信号の発射方向を設定する必要があるが、その発射方向への設定がしにくい場合が生じる。しかし、この発明の実施の形態１に係る赤外線信号送信機１、２１、３１によれば、スクリーン３と一体に形成する導光部の形状を変えることにより（導光部６、２２、３２）、赤外線信号の光路７、２３、３３を広い範囲にわたって調整することができるので、車載機の取り付け状態に応じてスクリーン３を取り替えることにより、指定方向に赤外線信号を出すことができる。つまり、安価に機種展開ができるのである。   When the reflection surface is used as in the prior art, it is necessary to change the position where the light emitting element is provided and the position and inclination of the reflection surface when the direction of taking out the infrared signal is changed. In addition, there is a direction (angle) that cannot be dealt with even if these are changed, and may not be dealt with. For example, when the device equipped with an infrared signal transmitter is an in-vehicle device, it is necessary to set the emission direction of the infrared signal according to the mounting state (angle) of the device on the vehicle body. It may be difficult to remove. However, according to the infrared signal transmitters 1, 21, and 31 according to the first embodiment of the present invention, the shape of the light guide formed integrally with the screen 3 is changed (light guides 6, 22, and 32). Since the optical paths 7, 23, and 33 of the infrared signal can be adjusted over a wide range, the infrared signal can be output in the designated direction by replacing the screen 3 according to the mounting state of the in-vehicle device. In other words, the model can be developed at low cost.

また、この実施の形態１に係る赤外線信号送信機１は、赤外線信号を導く経路を、スクリーン３と導光部６、２２、３２とからなる一体物として製作するので、部品点数が減少し構造が簡素化される。しかもパネル２に対しスクリーン３を組み付けることにより、光路７、２３、３３も設定されるので、赤外線信号光路７、２３、３３の設定精度が向上し、製造組み立ても極めて容易となって生産性が向上する。   In addition, since the infrared signal transmitter 1 according to the first embodiment manufactures the path for guiding the infrared signal as an integrated body composed of the screen 3 and the light guides 6, 22, 32, the number of parts is reduced and the structure is reduced. Is simplified. In addition, by assembling the screen 3 to the panel 2, the optical paths 7, 23, 33 are also set, so that the setting accuracy of the infrared signal optical paths 7, 23, 33 is improved, and manufacturing and assembly are extremely easy and productivity is improved. improves.

実施の形態２．
図５には、実施の形態２に係る赤外線信号送信機４１を示す。この実施の形態に係る赤外線信号送信機４１は、導光部に弾性を持たせたものである。また、設計上の都合などにより発光素子５を設ける場所が、スクリーン３から離れた箇所でしかもスクリーン３との間にパネル２の前壁２ａなどが存在するような箇所に限定される場合があり、そのような場合にも対応できる。スクリーン３と一体に形成される導光部４２は弾性を有するようにある程度の長さをもって形成される。スクリーン３をパネル２に取り付けるとき、導光部４２は、その弾性により変形してパネル２の前壁２ａをよけて基板４上の発光素子５に至る。導光部４２の平坦な信号入口部４２ａは、導光部４２の弾性により発光素子５の発信部５ａに密着される。つまり、導光部４２と発光素子５との隙間をゼロとすることができる。Embodiment 2. FIG.
FIG. 5 shows an infrared signal transmitter 41 according to the second embodiment. In the infrared signal transmitter 41 according to this embodiment, the light guide is made elastic. Further, the place where the light emitting element 5 is provided may be limited to a place where the front wall 2a of the panel 2 exists between the light emitting element 5 and the screen 3 due to design reasons. It is possible to cope with such a case. The light guide portion 42 formed integrally with the screen 3 is formed with a certain length so as to have elasticity. When the screen 3 is attached to the panel 2, the light guide portion 42 is deformed by its elasticity to avoid the front wall 2 a of the panel 2 and reach the light emitting element 5 on the substrate 4. The flat signal inlet 42 a of the light guide 42 is brought into close contact with the transmitter 5 a of the light emitting element 5 due to the elasticity of the light guide 42. That is, the gap between the light guide portion 42 and the light emitting element 5 can be made zero.

この実施の形態２に係る赤外線信号送信機４１によれば、実施の形態１と同様の効果を奏する。更に、従来の構造では、発光素子と導光部との隙間をゼロにするには、高い部品の精度、組み立て精度が必要となり、実現が難しいが、この実施の形態２に係る赤外線信号送信機４１によれば、スクリーン３をパネル２に組み付けることにより、導光部４２の弾性により導光部４２の信号入口部４２ａが発光素子５の発信部５ａに隙間ゼロで密着するので、赤外線信号の損失を抑えることができる。   The infrared signal transmitter 41 according to the second embodiment has the same effects as those of the first embodiment. Furthermore, in the conventional structure, in order to make the gap between the light emitting element and the light guide unit zero, high accuracy of parts and assembly accuracy are required, which is difficult to realize, but the infrared signal transmitter according to Embodiment 2 41, by assembling the screen 3 to the panel 2, the elasticity of the light guide 42 causes the signal entrance 42a of the light guide 42 to be in close contact with the transmitter 5a of the light emitting element 5 with no gap. Loss can be suppressed.

以上のように、この発明に係る赤外線信号送信機は、赤外線を透過して発信させるスクリーンと一体に形成された導光部の形状を変えることで簡素な構成で赤外線信号の光路を広い範囲で調整することができるので、赤外線信号に音声信号等をのせて伝送するＤＶＤプレーヤーなどに用いるのに適している。   As described above, the infrared signal transmitter according to the present invention can change the optical path of the infrared signal in a wide range with a simple configuration by changing the shape of the light guide unit formed integrally with the screen that transmits and transmits infrared rays. Since it can be adjusted, it is suitable for use in a DVD player that transmits an audio signal on an infrared signal.

この発明に係る赤外線信号送信機は、機器本体の前面にスクリーンを設け、前記機器本体内の発光素子から発信される赤外線信号を前記スクリーンを通して発信する赤外線信号発信機において、前記スクリーンと同一材料で一体に導光部を形成すると共に、この導光部の端部である赤外線信号入口部を前記発光素子の赤外線信号送信部に近接させてなる。 An infrared signal transmitter according to the present invention is provided with a screen on the front surface of a device main body, and an infrared signal transmitter for transmitting an infrared signal transmitted from a light emitting element in the device main body through the screen, using the same material as the screen. The light guide part is formed integrally, and the infrared signal inlet part which is an end part of the light guide part is made close to the infrared signal transmission part of the light emitting element.

この発明に係る赤外線信号送信機によれば、赤外線信号の導光部をスクリーンと同一材料で一体に形成し、しかもその赤外線信号入口部を発光素子の発光部に近接させるようにしたので、構造が簡単で部品点数も少なく、スクリーンを機器本体に組み付けるだけで、赤外線信号光路を精度良く設定することができ、かつ導光部と発光素子とが近接するので、赤外線信号の減衰を防ぐことができる。更に、導光部の形状を任意に設定することができるので、設計の自由度が大きく、赤外線信号の光路上の障害物を容易に回避するなどして所望の方向に赤外線信号を発信させることができる。

According to the infrared signal transmitter according to the present invention, the light guide portion of the infrared signal is integrally formed of the same material as the screen, and the infrared signal inlet portion is brought close to the light emitting portion of the light emitting element. The number of parts is simple and the number of parts is small. By simply assembling the screen to the equipment body, the optical path of the infrared signal can be set with high precision, and the light guide and the light emitting element are close to each other, preventing the attenuation of the infrared signal. it can. Furthermore, since the shape of the light guide unit can be arbitrarily set, the degree of freedom in design is large, and an infrared signal can be transmitted in a desired direction by easily avoiding an obstacle on the optical path of the infrared signal. Can do.

Claims (3)

機器本体の前面にスクリーンを設け、前記機器本体内に設置した発光素子から発信される赤外線信号を前記スクリーンを透過させて送信する赤外線信号送信機において、
前記スクリーンと一体に導光部を設けると共に、この導光部の端部を前記発光素子の発信部に近接させたことを特徴とする赤外線信号送信機。In an infrared signal transmitter that provides a screen on the front surface of the device body and transmits an infrared signal transmitted from a light emitting element installed in the device body through the screen,
An infrared signal transmitter characterized in that a light guide portion is provided integrally with the screen, and an end portion of the light guide portion is brought close to a light emitting portion of the light emitting element. 前記導光部を弾性を有する形状としたことを特徴とする請求項１記載の赤外線信号送信機。   The infrared signal transmitter according to claim 1, wherein the light guide portion has an elastic shape. 前記スクリーン及び導光部は樹脂で成形されていることを特徴とする請求項１記載の赤外線信号送信機。   The infrared signal transmitter according to claim 1, wherein the screen and the light guide are formed of resin.
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JP2002050777A (en) * 2000-08-01 2002-02-15 Koike Yasuhiro Aggregate type light-receiving/emitting device
JP2002299689A (en) * 2001-03-30 2002-10-11 Mitsumi Electric Co Ltd Light emitting indicator
JP2002352371A (en) * 2001-05-30 2002-12-06 Toshiba Corp Gas meter
JP2003274466A (en) * 2002-03-12 2003-09-26 Funai Electric Co Ltd Remote control light receiving apparatus

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