JPH11103092A - Light-emitting device - Google Patents

Light-emitting device

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Publication number
JPH11103092A
JPH11103092A JP26125897A JP26125897A JPH11103092A JP H11103092 A JPH11103092 A JP H11103092A JP 26125897 A JP26125897 A JP 26125897A JP 26125897 A JP26125897 A JP 26125897A JP H11103092 A JPH11103092 A JP H11103092A
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JP
Japan
Prior art keywords
light
emitting device
resin package
diffuser
light diffuser
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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
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JP26125897A
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Japanese (ja)
Inventor
Mitsuteru Kakino
Matsuyoshi Kikuchi
光照 垣野
松義 菊地
Original Assignee
Kikuchi Shokai:Kk
有限会社菊地商会
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Application filed by Kikuchi Shokai:Kk, 有限会社菊地商会 filed Critical Kikuchi Shokai:Kk
Priority to JP26125897A priority Critical patent/JPH11103092A/en
Publication of JPH11103092A publication Critical patent/JPH11103092A/en
Application status is Pending legal-status Critical

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/481Disposition
    • H01L2224/48151Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
    • H01L2224/48221Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
    • H01L2224/48245Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
    • H01L2224/48247Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L25/00Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes
    • H01L25/04Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L51/00, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/0001Technical content checked by a classifier
    • H01L2924/0002Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

PROBLEM TO BE SOLVED: To lengthen a durable time, and to emit light at the wide angle of visibility, by forming an LED element in which a light-emitting diode is sealed into a resin package, in which a front end section has focussing properties, so as to be buried into a light diffuser, in which the whole of the resin package or a part of the front end side diffuses incident light. SOLUTION: A light-emitting device is formed in such a manner that two LED elements 3, in which light-emitting diodes 2 of red are sealed into columnar transparent resin packages 1, in which one ends are spherically worked and are made of an epoxy resin, and marketed generally, are buried into a cloudy semitransparent light diffuser 6 formed by filling the insides of red transparent vessels 4 molded in the hemispherical thin-film of polyvinyl chloride, etc., with a sealing material 5 made of a silicone rubber before the sealing material 5 is cured in each resin package 1. Both electrode leads 7, 8 of the anodes 7 and cathodes 8 of a pair of the LED elements 3 are connected in parallel electrically, and led out to the outside of the light diffuser 6.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、発光ダイオードを先端部が集光性を有する透明或いは半透明の樹脂パッケージ内に封止してなるLED素子を応用した発光装置に関する。 The present invention relates to relates to a light emitting device tip a light emitting diode by applying the LED element obtained by encapsulating the transparent or the semitransparent resin package having a light collecting.

【0002】 [0002]

【従来の技術】従来より、発光ダイオードを先端部が集光性を有する透明或いは半透明の樹脂パッケージ内に封止してなるLED素子としては、前記樹脂パッケージが一方端が球面加工された円柱形状のエポキシ樹脂製で、 Conventionally, cylinder as the LED element obtained by encapsulating the transparent or the semitransparent resin package having tip a light collecting a light emitting diode, the resin package whereas the end is spherically shape made of epoxy resin,
他方端側から電極リードを取り出したものがある。 Are those from the other end was taken out electrode leads. また、前記球面加工によって発光ダイオードからの発光が前記樹脂パッケージの軸芯(以下、光軸という)方向に集光され一定の視野角を有している。 Further, the spherical processed by the axis of the light emitted from the light-emitting diode is the resin package (hereinafter, referred to as the optical axis) is focused in a direction has a constant viewing angle. 特に、前記樹脂パッケージが透明の場合は、その視野角が狭く高輝度であるが、前記樹脂パッケージが半透明の場合は、発光ダイオードからの発光の一部または全部が前記樹脂パッケージの内部で拡散し、前記視野角は広がるものの低輝度となる。 In particular, in the case of the resin package is transparent, but is its viewing angle is narrow high intensity, in the case of the resin package is translucent, diffusing part of the light emitted from the light-emitting diode or all inside of the resin package and, a low luminance of the viewing angle widened ones. また、かかるLED素子は、単体或いは集合体で、表示用、照明用、または、光通信用の光源等に幅広く利用されている。 Further, such LED elements may be used alone or in aggregate, for display, lighting, or, are widely used in the light source or the like for optical communication. 一方、表示用または照明用の光源としては、電球や蛍光灯がより一般的に使用されているが、前記LED素子はこれらに比べ、耐用時間数が長く、低消費電力であるという特長から、頻繁なメンテナンスが困難な用途や、電源として電池を使用する用途等に適している。 On the other hand, as the light source for display or lighting, but bulbs and fluorescent lamps are more commonly used, the LED elements as compared to, the number of service life is long, the advantage that a low power consumption, and frequent maintenance is difficult applications, are suitable for use such as a battery is used as a power source. 因みに、電球や蛍光灯の耐用時間数が普及品で2000時間〜4000時間程度であるのに対して、前記LED素子の耐用時間数は40000時間以上と10倍以上長寿命である。 Incidentally, while the service life number bulbs and fluorescent lamps is 2000 hours to 4000 hours approximately at the spread product, service hours of the LED elements is 40000 hours or more and 10 times or more longer life.

【0003】 [0003]

【発明が解決しようとする課題】しかしながら、前記L The object of the invention is to, however, said L
ED素子は、一般に前記樹脂パッケージのままで使用され、単体使用の場合は、前記樹脂パッケージが透明、半透明の如何にかかわらず小型であるため実質的に点光源として振る舞うため、表示用または照明用の光源として1次元的または2次元的に広がりを持たせる必要がある場合は、特に、信号灯のように遠方からの視認性が要求されるものに対しては、前記LED素子を多数集合させて使用しなければならなかった。 ED element is generally used while the resin package, in the case of single use, the resin package is transparent, because behave as substantially point source because it is small regardless of the translucent display or lighting If it is necessary to provide a one-dimensional or two-dimensionally spread as a light source for use, especially for those that visibility from a distance as the signal light is required, by assembling a large number of the LED elements It had to be used Te. 従って、多数個を同時に使用することで、消費電力が増加するという問題が生じるとともに、多数の前記LED素子を一装置として配置、結線しなければならず、製造手順が複雑化し、部品コスト及び製造コストが増え、製品コストを高騰させる結果となる。 Thus, by using a large number at the same time, with problems that power consumption is increased, placing the number of the LED elements as one unit, must be connected, manufacturing procedures are complicated, parts cost and manufacturing cost increases, resulting to soaring production costs.

【0004】また、前記LED素子を多数集合させて使用しても、光軸方向前方から観察した場合の光源として広がりを持たせることができても、前記LED素子単体での視野角が狭いため、同時に全体としての視野角を広げることが困難であり、光源として広がりを持っても前記LED素子の光軸に対する斜め方向からの視認性は改善されないという問題がある。 Further, the use of the LED element by a number set, even if it is possible to have spread as a light source when observed from the front in the optical axis direction, the order viewing angle of the LED element alone is narrow , it is difficult to widen the viewing angle of the entire time, visibility from an oblique direction with respect to the optical axis of the LED element also with a spread as a light source has a problem not improved. 特に、前記樹脂パッケージが透明の場合に顕著である。 In particular, the resin package is remarkable in the case of transparent. 更に、前記斜め方向からの視認性を改善するためには、前記LED素子を光軸を揃えて平面的に配列するのではなく、各光軸を変化させながら立体的に配置する等の工夫が必要となり、更に製造方法が複雑困難化する要因となる。 Moreover, to improve the visibility from the oblique direction, the LED elements instead of the sequence in a plane align the optical axis, a contrivance such as sterically arranged while changing the respective optical axis required, a factor which further manufacturing process is complicated difficulties of.

【0005】また、前記LED素子は、単体使用、多数使用にかかわらず、点光源として振る舞うため、観察者の網膜に残像が強く生じ、長時間直視すると目が疲れるという問題がある。 Further, the LED element is alone used, regardless of the number used, for acting as the point light source, resulting strong afterimage on the retina of the observer, a problem that a long time from directly viewing the eye tired.

【0006】本発明は、上記実情に鑑みてなされたもので、その目的は、上述の問題点を解消し、少ない個数のLED素子を使用して、長耐用時間数と低消費電力を実現するとともに、光源として広がりを持ち、且つ、広視野角で発光する視認性に富んだ発光装置を提供する点にある。 [0006] The present invention has been made in view of the above circumstances, and its object is to solve the above uses the LED element of small number, to achieve a long service hours and low power consumption together, it has spread as a light source, and is to provide an emitting device rich in visibility that emits a wide viewing angle.

【0007】 [0007]

【課題を解決するための手段】この目的を達成するための本発明による発光装置の第一の特徴構成は、特許請求の範囲の欄の請求項1に記載した通り、発光ダイオードを先端部が集光性を有する透明或いは半透明の樹脂パッケージ内に封止してなるLED素子を、その樹脂パッケージの全部または前記先端部側の一部が入射した光を拡散する光拡散体内に埋入するように設けてなる点にある。 Means for Solving the Problems A first characteristic feature of the light-emitting device according to the present invention for achieving this objective, as described in claim 1 in the column of the claims, the light-emitting diode tip the LED elements obtained by encapsulating the transparent or the semitransparent resin package having a light collecting and embedded in the light diffuser body part of all or the front end portion of the resin package to diffuse incident light It lies in comprising provided as.

【0008】同第二の特徴構成は、特許請求の範囲の欄の請求項2に記載した通り、前記第一の特徴構成に加えて、前記光拡散体が、少なくとも光を出射する表面内側に沿って半透明層を有し、屈折率が1より大きい点にある。 [0008] the second feature structure, as described in claim 2 of the column in the claims, in addition to the first feature structure, the light diffuser is a surface inside which emits at least light along a semi-transparent layer, the refractive index is a larger one point.

【0009】同第三の特徴構成は、特許請求の範囲の欄の請求項3に記載した通り、前記第二の特徴構成に加えて、前記光拡散体全体が半透明である点にある。 [0009] the third feature structure, as described in claim 3 in the column of the claims, in addition to the second feature structure lies in entire light diffuser is translucent.

【0010】同第四の特徴構成は、特許請求の範囲の欄の請求項4に記載した通り、前記第三の特徴構成に加えて、前記光拡散体がシリコーン樹脂製である点にある。 [0010] the fourth characterizing feature of the can, as noted in claim 4 column claims, in addition to the third feature structure, lies in the light diffuser is made of silicone resin.
尚、本明細書において、シリコーン樹脂はシリコーンゴムを含む。 In the present specification, the silicone resin comprises a silicone rubber.

【0011】同第五の特徴構成は、特許請求の範囲の欄の請求項5に記載した通り、前記第一、第二、第三または第四の特徴構成に加えて、前記光拡散体の表面の一部に前記光拡散体の内側に面した光反射面を形成してある点にある。 [0011] the fifth characterizing feature of the can, as noted in claim 5 in the column of the claims, the first, second, in addition to the third or fourth construction, the light diffuser They lie in is formed with a light reflective surface facing the inside of the light diffuser in a part of the surface.

【0012】同第六の特徴構成は、特許請求の範囲の欄の請求項6に記載した通り、前記第一、第二、第三、第四または第五の特徴構成に加えて、前記LED素子が少なくとも3個設けられており、それらの発光色が少なくともRGB3原色を含む点にある。 [0012] the sixth characterizing feature of, as described in claim 6 of the column in the claims, the first, second, third, in addition to the fourth or fifth characterizing feature, the LED elements are provided at least three, their emission color is in that they comprise at least RGB3 primary colors.

【0013】更に、本明細書において、透明或いは半透明という場合、無色または着色の違いは問わない。 Furthermore, in the present specification, reference to a transparent or semi-transparent, colorless or differences in coloration is not limited. また、ある媒質が半透明であるという場合、透明と不透明の中間の程度をいい、光は透過するものの、その光の一部または全部がその媒質の表面または内部で拡散し、ある対象物をその媒質を介して観察した場合にその対象物の輪郭を完全に確認できない程度から、鮮明ではないがその輪郭を確認できる程度までを含む。 Also, if that there medium is translucent, it means a degree of opacity of the intermediate transparent, but light is transmitted, some or all of the light is diffused by the surface or inside of the medium, a certain object the contour of the object when viewed through the medium from the degree that can not be completely confirmed, but not sharp including up enough to confirm the profile.

【0014】以下に作用並びに効果を説明する。 [0014] a description will be given of the operation and effect in the following. 第一の特徴構成によれば、発光ダイオードを通電し発光させると、前記樹脂パッケージを透過した発光は、ビーム強度が所定の視野角内に集中した状態で、前記光拡散体の内部に直接入射し、その後、前記光拡散体で拡散して出射するので、その前記光拡散体表面からの出射面積は、前記樹脂パッケージの先端部より明らかに広がり、光源として広がりを持たせることができ、且つ、出射する光は、前記光拡散体内で拡散しているため、視野角も大幅に広がるのである。 According to a first characterizing feature, when the energized light-emitting diodes emit light, the light emitting transmitted through the resin package, with the beam intensity is concentrated in a predetermined view angle in, directly enters the interior of the light diffuser and, thereafter, since the emitted and diffused by the light diffuser, the exit area from said light diffuser surface, the spread from the clear tip of the resin package, spread can have a as a light source, and , light emitted is, since the diffused by the light diffusing body, a viewing angle is also spread significantly. この結果として、少ない個数のLE As a result, the small number LE
D素子を使用して、長耐用時間数と低消費電力を実現するとともに、光源として広がりを持ち、且つ、広視野角で発光する視認性に富んだ発光装置を得ることができるのである。 Use D elements were achieved with long service hours and low power consumption, it has spread as a light source, and, it is possible to obtain a light emitting device rich in visibility that emits a wide viewing angle. また、観察者の目の疲れが生じ難い発光装置を提供することができるのである。 Further, it is possible to provide a hard cause fatigue of the observer's eye light emitting device.

【0015】第二の特徴構成によれば、前記光拡散体と前記樹脂パッケージ先端部との屈折率差が、前記樹脂パッケージ先端部と空気との屈折率差よりも小さくなるため、前記LED素子を直接空気中で使用する場合に比べ、前記樹脂パッケージ先端部の持つ集光性が低下し、 [0015] According to a second characterizing feature, the refractive index difference between the light diffuser and the resin package tip is smaller than the refractive index difference between the resin package tip and air, the LED element directly compared with the case of the use in the air, the light-collecting with the said resin package tip is lowered,
先ず、前記光拡散体内における視野角が広がり、その広がった視野角の光が前記半透明層で拡散して出射するので、前記第一の特徴構成と同様の作用効果を呈するのである。 First, the viewing angle is widened in the light diffusing body, the light of the widened viewing angle and emits the diffused by the semitransparent layer is to exhibit the first same effect as characterizing feature of the. 尚、前記光拡散体の屈折率が前記樹脂パッケージ先端部より大きい場合は、集光性がなくなり、逆にビーム径が広がる方向に屈折し、視野角拡大により寄与する。 Incidentally, when the refractive index of the light diffuser is larger than the resin package tip there is no light harvesting, conversely refracted in a direction in which the beam diameter is widened, contributing by wide viewing angle.

【0016】第三の特徴構成によれば、単一の材質で前記光拡散体を形成でき、前記光拡散体の形成工程を簡略化できるとともに、前記光拡散体全体で光を拡散するため、前記光拡散体の厚みを薄くでき、発光装置全体の薄型化が図れるのである。 [0016] According to a third characterizing feature, can form the light diffuser in a single material, it is possible to simplify the forming process of the light diffuser, for diffusing the light throughout the light diffuser, can reduce the thickness of the light diffuser is the overall thickness of the light-emitting device that attained.

【0017】第四の特徴構成によれば、半透明で且つ任意形状に加工容易な光拡散体を得ることができるのである。 [0017] According to a fourth characterizing feature, it is possible to obtain easily processed light diffuser in translucent and arbitrary shape.

【0018】第五の特徴構成によれば、前記光拡散体表面の光を発光する面を任意に制限でき、且つ、発光させたくない表面からの不必要な光の放出を防ぐことができるため、輝度の低下が防げるのである。 According to a fifth characterizing feature, can be arbitrarily restrict a surface for emitting light of said light diffuser surface, and, since it is possible to prevent the release of unwanted light from the surface do not want to emit light it is the prevent a decrease in brightness. 更に、前記LE Further, the LE
D素子が複数ある場合は、前記光反射面での内面反射と、前記光拡散体による拡散との相乗効果によって、各光源の発光が混ざり合って、前記光拡散体表面での発光強度の分布をより均等化できるのである。 If the D element is plural, the internal reflection at said light reflecting surface, by the synergistic effect with the diffusion by the light diffuser, intermingled emission of each light source, the distribution of the emission intensity at the light diffusion surface it can be further equalized. 特に、前記L In particular, the L
ED素子の各発光色が異なる場合は、前記光拡散体表面での発光色も、より均等化できるのである。 If each emission color of the ED element is different emission color at the light diffusion surface also is able more equalized.

【0019】第六の特徴構成によれば、RGB3原色に夫々対応する前記LED素子の電流値を各別に調整することで、任意の発光色が得られ、しかも、前記RGB3 According to a sixth characterizing feature, by adjusting the current value of the LED elements respectively corresponding to RGB3 primary colors individually, any emission color can be obtained. Moreover, the RGB3
原色が前記光拡散体内部での拡散によって混合するため、前記光拡散体表面で発光スペクトルが前記RGB3 Because primaries are mixed by diffusion inside the light diffuser, the emission spectrum is the in the light diffusion surface RGB3
原色に分離せず、光源として広がりを持ったにもかかわらず近距離での観察が可能となるのである。 Without separating the primary is the observation at close range despite having a spread as a light source becomes possible.

【0020】 [0020]

【発明の実施の形態】以下に本発明の実施の形態を図面に基づいて説明する。 It will be described with reference MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention with reference to the drawings. 図1に示すように,本発明の発光装置は、一方端が球面加工された円柱形状の透明のエポキシ樹脂製の樹脂パッケージ1に赤色の発光ダイオード2を封止してなる一般に市販されているLED素子3を2個、ポリ塩化ビニル等の半球面状薄膜に成形された赤色の透明容器4内にシリコーンゴム製のシーリング材5 As shown in FIG. 1, the light emitting device of the present invention has one end are commercially available red-emitting diode 2 is generally obtained by encapsulating the spherical processed resin package 1 made of a transparent epoxy resin cylindrical two LED elements 3, poly sealant to hemispherical thin red molded into a transparent container 4 made of silicone rubber such as vinyl chloride 5
を充填して形成される白濁半透明の光拡散体6内に、夫々の前記樹脂パッケージ1を前記シーリング材5が硬化する前に埋入させて形成される。 Cloudy translucent light diffuser 6 which is formed by filling, the resin package 1 of each said sealing member 5 is formed by embedded prior to curing. 尚、前記一対のLED Incidentally, the pair of LED
素子3のアノード7及びカソード8の両電極リード7、 Both electrode lead 7 of the anode 7 and cathode 8 of the element 3,
8は電気的に並列接続され、前記光拡散体6外に引き出されている。 8 are connected electrically in parallel, it is drawn out the light diffuser 6.

【0021】図2に示すように、前記一対のLED素子3を発光させるために、電流制限抵抗Rを介して、各別に所定の発光強度を得るのに十分な電流を得るのに必要な適正電圧を前記両電極リード7、8間に印加すると、 As shown in FIG. 2, in order to emit said pair of LED elements 3, via a current limiting resistor R, the proper required to obtain a sufficient current to obtain a predetermined emission intensity for each different When a voltage is applied between the two electrode leads 7 and 8,
前記一対のLED素子3の前記各発光ダイオード2が発光する。 Wherein each of the light emitting diodes 2 of the pair of LED elements 3 to emit light. 前記各LED素子3が空気中にある場合は、図3に示すように、球面加工された前記樹脂パッケージ1 Wherein when each LED element 3 is in the air, as shown in FIG. 3, the resin package 1 which is spherically
の先端部3aの集光作用により前記各発光ダイオード2 The distal end portion 3a of the condensing said by action emitting diodes 2
からの発光ビームは相対強度50%以上のものが、前記各LED素子3の光軸9を中心とする視野角φ内に集中するが、本実施形態の構成では、前記先端部3aの周囲がシリコーンゴムであり、前記樹脂パッケージ1との屈折率差は、前記樹脂パッケージ1と空気との屈折率差より小さいため、前記樹脂パッケージ1が本来有する前記集光作用が抑制され、前記各発光ダイオード2からの発光は広い視野角で前記光拡散体6内に入射する。 Emission beam more than 50% relative intensity from the said although concentrated on the viewing angle within φ around the optical axis 9 of the LED elements 3, in the configuration of the present embodiment, the periphery of the distal end portion 3a a silicone rubber, the refractive index difference between the resin package 1, the smaller than the refractive index difference between the resin package 1 and the air, the condenser effect the resin package 1 has originally is suppressed, the respective light emitting diodes emission from 2 enters the light diffuser 6 in a wide viewing angle. 前記光拡散体6内に入射した光は、前記光拡散体6内部で拡散され、前記光拡散体6の半球面状の表面から前記赤色の透明容器4を通過して外部空間に180°以上の視野角で出射する。 Light incident on the light diffuser 6 is diffused inside the light diffuser 6, 180 ° or more to the outside space through the transparent vessel 4 of the red from the half spherical surface of the light diffuser 6 emitted at a viewing angle of. この結果、前記光拡散体6の半球面状の表面全体が広がりを持った光源として見えるのである。 As a result, it looks as a light source for the entire semi-spherical surface of the light diffuser 6 with spread. 以上より、本発明の発光装置は、信号灯に応用することができ、電球等を使用したものに比べ、消費電力の低減とメンテナンス期間の長期化を実現できるのである。 From the above, the light emitting device of the present invention, it can be applied to the signal lamp, as compared to those using bulb or the like and in the range can be realized prolonged reduction and maintenance period of the power consumption. 特に、メンテナンスが困難な場所に設置されてある、電池を電源とする機器類の信号灯の発光装置に好適である。 In particular, maintenance are installed in difficult places, it is suitable for the light emitting device of the signal lights of the equipment of which power supplies are batteries.

【0022】以下に別実施形態を説明する。 [0022] to explain the different embodiments below. 〈1〉前記光拡散体6は必ずしも全体が半透明である必要はない。 <1> wherein the light diffuser 6 is not necessarily a whole is translucent. 例えば、図4に示すように、前記光拡散体6 For example, as shown in FIG. 4, the light diffuser 6
の半球面状の表面内側部分が半透明層6aで、その内側で前記各LED素子3を覆う部分が透明な2層構造であっても構わない。 In semi spherical surface inner portion translucent layer 6a, portions covering the respective LED elements 3 in the inside may be a two-layer structure transparent. この場合、その透明部分の屈折率を前記樹脂パッケージ1の屈折率より大きくすることで、前記先端部3aで前記各発光ダイオード2からの発光ビームを光軸から外側に向けて拡散させることができ、広視野角実現に寄与するのである。 In this case, by increasing the refractive index of the transparent portion than the refractive index of the resin package 1, it is possible to diffuse outward from the optical axis emission beam of the from the light emitting diode 2 by the tip 3a , it is to contribute to the wide viewing angle achieved.

【0023】〈2〉図5に示すように、前記光拡散体6 [0023] <2> as shown in FIG. 5, the light diffuser 6
の表面の一部に前記光拡散体6の内側に面した光反射面10を形成するのも好ましい。 Also it preferred to a portion of the surface of forming the light reflecting surface 10 facing the interior of the light diffuser 6. 前記光反射面10は光を透過吸収せず高効率で反射する面であれば鏡面であっても白色であってもよい。 The light reflecting surface 10 may be white even mirror if the surface to be reflected at high efficiency without transmitting absorb light. また、発光色に合わせて着色されていても構わない。 Further, it may be be colored to match the emission color. また、前記光反射面10は前記光拡散体6の表面と一体に形成しても構わないし、分離可能に接触していても構わない。 Also, the light reflecting surface 10 to may be formed integrally with the surface of the light diffuser 6, may also be separable contacts. 簡単な実施例としては、 As a simple example,
例えば、前記光拡散体6の表面の一部を白色の紙で外側から覆っても構わない。 For example, a part of the surface of the light diffuser 6 may be covered from the outside with a white paper.

【0024】〈3〉前記各LED素子3の前記樹脂パッケージ1は、半透明であっても同様の効果を得ることができる。 [0024] <3> wherein the resin package 1 of each LED element 3 can be translucent obtain the same effect. また、前記樹脂パッケージ1は、無色でも、特定の色に着色されてあっても構わない。 Further, the resin package 1 also colorless, but it may be each other be colored to a specific color. 前記各LED素子3は、1個、または、3個以上であっても構わない。 Wherein each of the LED elements 3, one or may be three or more.
また、それらは、電気的に並列接続、直列接続、または、直並列接続であってもよく、また、各別に独立して給電されるように構成されていても構わない。 They also electrically connected in parallel, series, or may be a series-parallel connection, also, may be configured to be powered independently to each other. また、前記各LED素子3の発光色は、赤色に限らず、現実に発光可能なものであれば、特定の色に限定されない。 Further, the emission color of the LED elements 3 is not limited to red, as long as it actually capable of emitting light, but is not limited to a specific color. 前記LED素子3が複数個の場合、全ての発光色が同色でも、また、一部または全部が異なる色であっても構わない。 Wherein when the LED elements 3 are a plurality, all emission colors in the same color, also, it does not matter even different color part or the whole. また、相互の相対位置関係も適宜変更可能である。 Also, the mutual positional relationship can also be appropriately changed.
特に、図5に示すように、各発光色がRGB3原色を含むように複数設けられ、前記各LED素子3の電流値を各別に調整できる電流調整手段11を設けることで、前記光拡散体6の表面からの発光色を任意に調整できるのである。 In particular, as shown in FIG. 5, each emission color is provided more to include RGB3 primary colors, by providing a current regulating means 11 capable of adjusting the current value of each LED element 3 to each other, the light diffuser 6 it can be arbitrarily adjusted emission color from the surface of the. この場合、前記光拡散体6は白色で、前記光反射面10も無色鏡面または白色が好ましい。 In this case, in the light diffuser 6 white, the light reflecting surface 10 is also colorless specular or white is preferable. かかる構成で信号灯を構成すると、同一製品で任意の発光色が得られるので、例えば、国によって発光色の規格が異なる信号機等の応用も、同一製品で国別に対応できるのである。 When constituting the signal lights in such a configuration, since any emission color by the same product is obtained, for example, applications of the traffic such as standards of emission colors are different countries also, it can correspond to the country in the same product. 更に、上記実施形態では、前記LED素子3は単体の発光ダイオードを各別に樹脂封止した形態のものであるが、複数の発光ダイオードを樹脂封止したものであっても構わない。 Further, in the above embodiment, the LED elements 3 are those in a form sealed with resin monomer emission diodes to each other, but may be a plurality of light emitting diodes which was sealed with resin.

【0025】〈4〉前記光拡散体6の材質、形状、色、 [0025] <4> material of the light diffuser 6, the shape, color,
及び、形成方法は、必ずしも本実施形態に限定されるものではない。 And forming method is not necessarily limited to the present embodiment. 形状に関しては、例えば、円盤状、円柱状、半円柱状等であってもよく、更に、内部に中空部分を有していても構わない。 For the shape, for example, disk-like, cylindrical, it may be semi-cylindrical or the like, may have a hollow portion therein. また、前記透明容器4の材質、形状、及び、色は、必ずしも本実施形態に限定されるものではない。 The material of the transparent vessel 4, the shape, and the color is not necessarily limited to the present embodiment. 色に関しては、赤色以外に、例えば、 With respect to color, other than red, for example,
無色でもよく、前記各LED素子3の発光色に合わせて適宜変更可能である。 It may be colorless and can be appropriately changed according the the emission color of the LED elements 3. 更に、前記透明容器4は必ずしも設けなくても構わない。 Further, the transparent vessel 4 may be not necessarily provided.

【0026】〈5〉本発明の発光装置は、信号灯以外にも、一般の照明装置等に応用しても構わない。 [0026] <5> The light emitting device of the present invention, in addition to a signal lamp, it may be generally applied to a lighting device or the like. 更に、図5に示す発光装置を複数個マトリックス状に配列して広視野角、大画面、且つ、薄型のカラー表示装置を構成するのも好ましい実施の形態である。 Further, wide viewing angle by aligning multiple matrix light-emitting device shown in FIG. 5, a large screen, and is also preferred embodiment to constitute the thin color display device. この場合、画素面積及びマトリックスの配列数を適当に調整することで、画面サイズとして映画スクリーン程度の大画面の実現も可能である。 In this case, by appropriately adjusting the number of arrays of pixels areas and matrix, realize a large screen of about movie screen as the screen sizes are possible.

【0027】 [0027]

【発明の効果】以上説明したように、本発明によれば、 As described in the foregoing, according to the present invention,
少ない個数のLED素子を使用して、長耐用時間数と低消費電力を実現するとともに、光源として広がりを持ち、且つ、広視野角で発光する視認性に富んだ発光装置を提供することができる。 Using an LED element of a small number were achieved with long service hours and low power consumption, it has spread as a light source, and can provide a light emitting device rich in visibility that emit in the wide viewing angle .

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明に係る発光装置の一実施形態を示す縦断面図 Longitudinal sectional view showing an embodiment of a light emitting device according to the invention, FIG

【図2】本発明に係る発光装置の一実施形態の発光状態を説明する縦断面図 Longitudinal sectional view illustrating a light emitting state of an embodiment of a light emitting device according to the invention; FIG

【図3】LED素子の発光状態を説明する縦断面図 Figure 3 is a longitudinal sectional view illustrating a light emitting state of the LED element

【図4】本発明に係る発光装置の別実施形態を示す縦断面図 Longitudinal sectional view of another embodiment of a light emitting device according to the present invention; FIG

【図5】本発明に係る発光装置の他の別実施形態を示す縦断面図 Longitudinal sectional view showing another alternative embodiment of a light emitting device according to the present invention; FIG

【符号の説明】 1 樹脂パッケージ 1a 先端部 2 発光ダイオード 3 LED素子 4 透明容器 5 シーリング材 6 光拡散体 6a 半透明層 7 電極リード(アノード) 8 電極リード(カソード) 9 光軸 10 光反射面 11 電流調整手段 R 電流制限抵抗 [EXPLANATION OF SYMBOLS] 1 resin package 1a tip 2 light emitting diodes 3 LED element 4 transparent container 5 sealing material 6 light diffusers 6a semitransparent layer 7 electrode lead (anode) 8 electrode lead (cathode) 9 optical axis 10 light reflecting surface 11 current adjusting means R current limiting resistor

Claims (6)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 発光ダイオードを先端部が集光性を有する透明或いは半透明の樹脂パッケージ内に封止してなるLED素子を、その樹脂パッケージの全部または前記先端部側の一部が入射した光を拡散する光拡散体内に埋入するように設けてなる発光装置。 1. A LED element tip obtained by encapsulating in a transparent or semitransparent resin package having a light collecting a light emitting diode, a part of all or the front end portion of the resin package is incident the light emitting device formed by providing to embedded in the light diffusing body for diffusing light.
  2. 【請求項2】 前記光拡散体が、少なくとも光を出射する表面内側に沿って半透明層を有し、屈折率が1より大きい請求項1記載の発光装置。 Wherein said light diffuser is at least have a semi-transparent layer along a surface inside which emits light, a refractive index light-emitting device of a larger claim 1 1.
  3. 【請求項3】 前記光拡散体全体が半透明である請求項2記載の発光装置。 Wherein entire light diffuser is a light-emitting device according to claim 2, wherein the semi-transparent.
  4. 【請求項4】 前記光拡散体がシリコーン樹脂製である請求項3記載の発光装置。 Wherein said light diffuser is a light-emitting device according to claim 3, wherein a made of silicone resin.
  5. 【請求項5】 前記光拡散体の表面の一部に前記光拡散体の内側に面した光反射面を形成してある請求項1、 5. A method according to claim 1 which is formed a light reflective surface facing the inside of the light diffuser in a part of a surface of the light diffuser,
    2、3または4記載の発光装置。 2, 3, or 4 light emitting device according.
  6. 【請求項6】 前記LED素子は少なくとも3個設けられており、それらの発光色が少なくともRGB3原色を含むことを特徴とする請求項1、2、3、4または5記載の発光装置。 Wherein said LED element are provided at least three light-emitting device according to claim 1, 2, 3, 4 or 5, wherein it contains their emission color at least RGB3 primary colors.
JP26125897A 1997-09-26 1997-09-26 Light-emitting device Pending JPH11103092A (en)

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Application Number Priority Date Filing Date Title
JP26125897A JPH11103092A (en) 1997-09-26 1997-09-26 Light-emitting device

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003511824A (en) * 1999-10-14 2003-03-25 カラレイ・ディジタル・テクノロジー・(シェンツェン)・カンパニー・リミテッド Numerical control color light source system
JP2006525648A (en) 2003-05-05 2006-11-09 ゲルコアー リミテッド ライアビリティ カンパニー LED light bulb
JP2008124518A (en) * 2004-07-02 2008-05-29 Samsung Electro-Mechanics Co Ltd Rgb light-emitting diode package with improved color mixing properties
JP2008536146A (en) * 2005-04-11 2008-09-04 ファロ テクノロジーズ インコーポレーテッド 3D coordinate measuring device
GB2545279A (en) * 2015-12-09 2017-06-14 Dongguan Chen Cai Illuminating Tech Co Ltd LED Lamp beads with multiple light-emitting points

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003511824A (en) * 1999-10-14 2003-03-25 カラレイ・ディジタル・テクノロジー・(シェンツェン)・カンパニー・リミテッド Numerical control color light source system
JP2006525648A (en) 2003-05-05 2006-11-09 ゲルコアー リミテッド ライアビリティ カンパニー LED light bulb
JP2008124518A (en) * 2004-07-02 2008-05-29 Samsung Electro-Mechanics Co Ltd Rgb light-emitting diode package with improved color mixing properties
JP2008536146A (en) * 2005-04-11 2008-09-04 ファロ テクノロジーズ インコーポレーテッド 3D coordinate measuring device
GB2545279A (en) * 2015-12-09 2017-06-14 Dongguan Chen Cai Illuminating Tech Co Ltd LED Lamp beads with multiple light-emitting points

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