JPH0983018A - Light emitting diode unit - Google Patents

Light emitting diode unit

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Publication number
JPH0983018A
JPH0983018A JP23297295A JP23297295A JPH0983018A JP H0983018 A JPH0983018 A JP H0983018A JP 23297295 A JP23297295 A JP 23297295A JP 23297295 A JP23297295 A JP 23297295A JP H0983018 A JPH0983018 A JP H0983018A
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JP
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Prior art keywords
lens
emitting diode
light
light emitting
characterized
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Pending
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JP23297295A
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Japanese (ja)
Inventor
Motoyoshi Sanki
Hiroo Shono
基至 参木
裕夫 庄野
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Nippon Denyo Kk
日本デンヨー株式会社
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/483Containers
    • H01L33/486Containers adapted for surface mounting
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L33/00Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58Optical field-shaping elements
    • 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 obtain an LED unit suitable for mounting on a board in which the distance between a lens and an LED can be set freely depending on the application and the output light from the LED can be directed collectively in one direction. SOLUTION: The light emitting diode unit comprises an LED 3, a lead frame 5 for feeding an applying voltage thereto, a translucent region 7 for introducing the output light from LED 3 and surrounded by a reflective wall 6 in order to introduce a part thereof in substantially same direction, a condenser lens 2 secured directly above the LED 3 in the translucent region 7, and a support 4A for the condenser lens 2.

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、発光ダイオードユニットに関し、特に、基板面等への面実装に好適な高輝度の発光ダイオードユニットに関する。 The present invention relates to relates to a light emitting diode unit, in particular, relates to light-emitting diode units of suitable high brightness surface mounted to the substrate surface or the like.

【0002】 [0002]

【従来の技術】これまで一般に広く利用されている発光ダイオード(LED)は公知のように半導体によって形成されており、微小なサイズで材料によって決まる波長の可視光を放射し、かつ、低電圧で動作するなどの特性を有している。 BACKGROUND ART So far generally widely used light-emitting diode (LED) is formed by a semiconductor as known, it emits visible light of wavelength determined by the material in small sizes and a low voltage It has a characteristic such as to operate. そこで、かかるLEDはフォトトランジスタなどの受光素子と組合せてフォトカプラとして使用される外、各種電子機器等でもディスプレイ素子として用いられ、また、光ファイバ通信の発光素子としても利用されつつある。 Therefore, such a LED is used outside, as a display device in various electronic devices that are used as a photo-coupler in combination with a light receiving element such as a phototransistor, and there being also used as a light emitting element of the optical fiber communication.

【0003】 [0003]

【発明が解決しようとする課題】ところで、これ迄の基板実装型(サーフェスマウントタイプ)のLEDユニットの場合、例えばヒューレットパッカード社(アメリカ)製のものなど実装し易いようにパッケージ型に形成されたリードフレーム上にLEDを電気的に接合した上、周囲を透明エポキシ樹脂等で一体成形してユニットを作成するようにしているため、非拡散型とはいうもののLEDからの光が周囲部に散光し易く、光度ないし輝度が高められないために日光など他の光の影響を受け、 [SUMMARY OF THE INVENTION Incidentally, this case until the LED unit of the substrate mount type (Surface Mount Type) of which is formed, for example, Hewlett-Packard Company (USA) Ltd. packaged for easy mounting, such as those of after having electrically bonding the LED on a lead frame, diffuser around portion light from the LED but because you have to create a unit integrally molded around a transparent epoxy resin or the like, the non-diffusion type referred to facilitate, under the influence of other light, such as sunlight to luminosity or brightness it can not be increased,
表示素子として使用される場合は目視しにくく、また、 Difficult to visually when used as a display device, also,
光学的検知素子に組込まれるような場合、誤検知の虞もある。 If, as incorporated into an optical sensing element, there is a possibility of false positives.

【0004】本発明は、上記従来の問題に着目し、第1 [0004] The present invention focuses on the above-described conventional problems, a first
の目的は、集光レンズとLEDとの間の距離を用途に応じて自在に設定可能な基板実装型に好適の発光ダイオードユニットを提供することにある。 The purpose is to provide a suitable light emitting diode unit to the substrate mount type can be set freely according to the application the distance between the condenser lens and LED.

【0005】更に本発明の第2の目的は、製造が容易でしかも光を効率良く集約して一方向に出力させることのできる基板実装型に好適な発光ダイオードユニットを提供することにある。 Furthermore a second object of the present invention is to provide a suitable light emitting diode unit manufacturing is efficiently aggregated easily, yet light to the substrate mount type which can be output in one direction.

【0006】 [0006]

【課題を解決するための手段】かかる目的を達成するために、本発明の形態は、リードフレームに保持された発光ダイオードと、前記リードフレームを保持するユニットベースと、一端側が前記ユニットベースに接合される環状のレンズ支持体と、該レンズ支持体の中央部に前記発光ダイオードを囲むように周設され前記発光ダイオードからの出射光を反射する反射壁部と、該反射壁部と前記ユニットベースとによって囲まれた透光領域を塞ぐように前記レンズ支持体の他端側に配置される集光レンズと、該集光レンズを前記レンズ支持体に固定するレンズ固定手段とを具えたことを特徴とするものである。 To achieve SUMMARY OF THE INVENTION The above objects, according to the present invention includes a light emitting diode held by the lead frame, a unit base for holding the lead frame, one end joined to the unit base an annular lens support being, said a reflecting wall portion which is circumferentially provided so as to surround the light emitting diode in the central portion of the lens support reflects light emitted from the light emitting diode, and the reflection wall unit base said lens support of the condenser lens disposed at the other end side so as to cover the light-transmissive region surrounded by the, to be equipped with a lens fixing means for fixing the condenser lens on the lens support it is an feature.

【0007】本発明によれば、発光ダイオードからの出力光が透光領域を透過する際、その一部は透光領域を囲む反射壁により反射されて、ほぼ集光レンズ方向に向けられると共に透光領域の有する屈折率の影響を受けて集光レンズに入射する。 According to the present invention, when the output light from the light emitting diode is transmitted through the light-transmitting region, a portion is reflected by the reflecting wall surrounding the light-transmitting region, Toru with directed substantially converging lens direction under the influence of the refractive index with the light area incident on the condenser lens. かくして発光ダイオードからの出射光を集束する形で外部に放散させることなく集光レンズに入射させ、この入射した光を集光レンズの有する特性に応じて外部に出射させることができるもので、出射光の平行光束化あるいは集束によりその光度ないし輝度を高める効果が得られるのみならず、用途に応じて出射光を集散自在に設定することができ、生産コストの低減にも貢献できる。 Thus to be incident on the condenser lens without dissipating to the outside in a manner that focuses the light emitted from the light emitting diode, as it can be emitted to the outside in response to light the incident to the characteristics possessed by the condensing lens, out the collimated or focused in Shako not only effect is obtained to increase the intensity or brightness, the emitted light can be set distribution center freely depending on the application, it can contribute to a reduction in production costs.

【0008】 [0008]

【発明の実施の形態】以下に、図面に基づいて本発明の実施例を詳細かつ具体的に説明する。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail and specifically with reference to the drawings.

【0009】まず、本発明の第1の形態による実施例として、球レンズ付き発光ダイオード(LED)ユニットの構成について図1を参照しつつ説明する。 [0009] First, as an embodiment according to the first embodiment of the present invention, referring to FIG. 1 and the following explains the structure of the light-emitting diode (LED) unit with spherical lens. この図に示すように、LEDユニット1は球レンズ2とLED3 As shown in FIG, LED unit 1 and the spherical lens 2 LED 3
と、その支持体4とで主要部が構成される。 When the main unit is composed of its support 4. すなわち、 That is,
支持体4はLED3にバイアス電圧を供給するための導電体によるリードフレーム5を含め耐熱樹脂例えばポリアミド系樹脂ないし液晶ポリマーによって一体成形されるもので、6はLED3を取囲むようにしてその周囲に設けられたコーン型の鏡面仕上げされた反射壁である。 Support 4 intended to be integrally molded by a heat-resistant resin such as polyamide resin or liquid crystal polymer, including the lead frame 5 by the conductive member for supplying a bias voltage to LED3, 6 is provided around so as to surround the LED3 It was a mirror-finished reflecting wall of the cone type.
なお、反射壁6には反射効率を高めるために金属膜などによるメッキ処理が施されてもよいが、本実施例では支持体4成形用の耐熱樹脂として不透明白色のものを用いることでその成形時に反射壁6の面を高い反射率を有するものとすることができる。 Incidentally, such as by plating a metal film may be subjected to enhance the reflection efficiency in the reflection wall 6, but molding by using those opaque white as a heat-resistant resin for the support 4 formed in this embodiment sometimes the surface of the reflecting wall 6 can be made to have a high reflectivity.

【0010】以下では、支持体4のLED3周りに反射壁6が形成される上半部分をリフレクタ部(レンズ支持体)4Aと呼び、下半部分をユニットベースと呼ぶこととする。 [0010] In the following, the upper half of the reflecting wall 6 around LED3 of the support 4 is formed is referred to as the reflector unit (lens support material) 4A, it is assumed that the lower half is called a unit base. このほぼコーン型をなす反射壁6の周囲面は円錐台状ないし回転放物面状等、要はLED3からの出射光のできるだけ多くを球レンズ2に向けて反射させると共に球レンズ2からの透過光が所望の配光特性が得られるように設定されればよい。 Transmitting the peripheral surface frustoconical or parabolic shape or the like of the reflection wall 6 This substantially forming a cone, short as much of the light emitted from LED3 from the spherical lens 2 causes reflected toward the spherical lens 2 light may be set so that desired light distribution characteristics can be obtained. なお、本実施例ではリフレクタ部の4Aの球レンズ2を受ける反射壁6の上縁周囲部を球レンズ2の球面形状に合わせ、球レンズ2を受け易くしたが、必ずしも上縁周囲部をそのような形状としなくともよく、要は球レンズ2の中心からLED3までの距離Rが所定の設定値となるように位置決めされる限り、例えば前記上縁で球レンズ2を受けるようにしてもよい。 Incidentally, the upper edge perimeter of the reflecting wall 6 which receives a spherical lens 2 of the reflector portion of 4A in this embodiment fit spherical shape of the spherical lens 2 has been susceptible to spherical lens 2, not necessarily on the edge peripheral portion thereof may not be shaped like, short long as the distance R from the center of the sphere lens 2 to the LED3 is positioned to a predetermined set value, for example, it may be subjected to spherical lens 2 at the upper edge .

【0011】一方、球レンズ2はガラスないしはポリエーテルサルフォン(英国ICI社製)あるいはアートン(日本合成ゴム社製)等の耐熱性透光樹脂により所定の半径rが得られるように形成される。 Meanwhile, the spherical lens 2 is formed as a glass or a polyethersulfone (manufactured by British company ICI) or ARTON (manufactured by Japan Synthetic Rubber Co., Ltd.) heat-resistant translucent resin such as a predetermined radius r obtained . 更に図1において、7は反射壁6によって囲繞されるLED3上部の透光領域であり、本実施例では球レンズ2を所定の位置に取付けるべく透光領域7に透光性の耐熱エポキシ樹脂を所定量充填し、透光領域7に気泡が残らないようにして球レンズ2をリフレクタ部4Aに接合した。 Further in Figure 1, the LED3 upper 7 which is surrounded by the reflecting wall 6 is transmitting region, the light transmission region 7 to the present embodiment mounting the spherical lens 2 in place of the transparent heat-resistant epoxy resin a predetermined amount filled, were joined spherical lens 2 on the reflector portion 4A in the light transmitting region 7 so as not to leave air bubbles. なお、球レンズ2が安定した状態でリフレクタ部4Aに接合される限り、必らずしも透光領域7に透光性樹脂、例えばエポキシ樹脂を充填する必要はなく、透光領域7が透光可能なように保たれる限り、単なる空気層であってもよいし、マッチングオイルなどを充填してもよいことはいうまでもない。 As long as the spherical lens 2 is bonded to the reflector portion 4A in a stable condition, 必Razushi is also not necessary to fill translucent resin in the light transmitting region 7, for example, an epoxy resin, the light transmitting region 7 GaToru unless maintained so as to be light, it may be a simple air layer, may of course be filled with such matching oil.

【0012】以上のような構成になるレンズ付きLED [0012] The lens with LED to become a structure as described above
素子1では、LED3から球レンズ2の球心0までの距離Rを球レンズ2の半径より大に保つと共に球レンズ2 In the element 1, the spherical lens with keeping the distance R from LED3 to the spherical center 0 of the spherical lens 2 on larger than the radius of the spherical lens 2 2
の有する屈折率n R ,透光領域7内の物質の屈折率n C Refractive index n R, the refractive index n C of a substance in the light transmitting region 7 having the
と上記の距離Rおよび反射壁6の形状を適切に組合せることで、球レンズ2を介して空中に放射されるLED3 And by appropriately combining the above distance R and the shape of the reflecting wall 6, LED 3 that is radiated into the air through the spherical lens 2
からの光束をほぼ平行光束にしたり、あるいは集光させたり散光させることができ、用途に適したLED素子とすることができる。 Or substantially parallel light flux emitted from, or can be the diffuser or is condensed, can be an LED element suitable for use. なお、反射壁6の形状としては、先にも述べたように自在に設定可能であるが、例えば、反射壁6の形状を図2に示すように円錐面状6A(左側) The reflecting the shape of the wall 6, but can be set freely as mentioned above, for example, the reflecting wall 6 of the shape conical shape 6A as shown in FIG. 2 (left side)
あるいは回転放物面状6B(右側)とした時には、これらの反射壁6Aあるいは6Bを介してLED3からの反射光を球レンズ2に導き、矢印で示すようにLED3と球レンズ2の球心とを結ぶ光軸に沿って進行する光成分が多くなり、この方向からの視野に対してLED3からの出力光を強める効果が得られる。 Or when the rotational paraboloid 6B (right side), via these reflective walls 6A or 6B guides the reflected light from LED3 in spherical lens 2, the spherical center in the LED3 and the spherical lens 2 as indicated by an arrow light components traveling along the optical axis connecting the is increased, the effect of enhancing the output light from LED3 against viewing from the direction can be obtained.

【0013】本実施例の特徴は、上述したように集散自在にレンズ付きLEDユニット1の設計選択が可能であることと共に球レンズ2が真球度の高い球体として製造可能であることから、レンズ付きLEDユニット1の作成工程において球レンズ2の位置決め取付を極めて容易としたことにある。 [0013] Features of the present embodiment, since the spherical lens 2 with it is possible collection and distribution freely design choice lensed LED unit 1 as described above can be produced as a highly spherical sphericity, lens It is very easy and the possible positioning attachment of the spherical lens 2 in the generating step LED unit 1 attached. すなわち、取付けの際、球レンズ2 That is, when mounting, the spherical lens 2
を自在な姿勢により反射壁6の開口端によって位置決めされるため、その光軸を所定の方向に保持することができる。 Because it is positioned by the open end of the reflecting wall 6 by freely posture, it is possible to hold the optical axis in a predetermined direction.

【0014】続いて、本発明の第2の形態による実施例を以下の図を参照しつつ説明する。 [0014] Subsequently, an embodiment according to the second embodiment of the present invention will be described with reference to the following figures.

【0015】図3はその一実施例による構成を示す。 [0015] Figure 3 shows the construction according to an embodiment thereof. ここで、12は本実施例による半球型の平凸レンズである。 Here, 12 is a plano-convex lens of hemispherical according to this embodiment. この平凸レンズ12は例えばガラスないしポリエーテルサルフォンあるいはアートン等の耐熱性透明樹脂により所定の半径rが得られるように形成されるもので、 The plano-convex lens 12 is intended to be formed so that a predetermined radius r is obtained by, for example, glass or polyether sulfone or heat resistant transparent resin such as Arton,
本例の場合の平凸レンズ12は半球体より幾分大きい目に形成されている。 Plano-convex lens 12 in the case of the present embodiment is formed in a somewhat larger meshes than a hemisphere. 12Aはその平坦面であり、LED 12A is its flat surface, LED
3からの光は透光領域7を介してこの平坦面12Aから平凸レンズ12に入射する。 Light from 3 incident on the plano-convex lens 12 from the flat surface 12A through the light-transmitting region 7. なお、この平凸レンズ12 It should be noted that the plano-convex lens 12
は例えば透光領域7に充填される透光性のエポキシ樹脂によりその平坦面12Aの外周縁部がリフレクタ部4A Reflector portion 4A is an outer peripheral edge portion of the flat surface 12A by transparent epoxy resin to be filled in for example the light transmitting region 7
の上面4Bに当接状態で接合されるもので、8はリフレクタ部4Aの上面周囲部あるいは四隅部の対象位置に設けられているレンズ位置決め枠である。 Intended to be joined to the upper surface 4B in the contact state, 8 denotes a lens positioning frames provided to the target position on the upper surface peripheral portion or the corner portion of the reflector portion 4A. レンズ位置決め枠8はリフレクタ部4Aを含む支持体4の樹脂による成形時に一体成形されることが望ましく、レンズ位置決め枠8の内側はレンズ12の形状に合わせて成形される。 Lens positioning frame 8 is desirably formed integrally during molding by the resin of the support 4, including a reflector portion 4A, the inside of the lens positioning frame 8 is shaped to fit the shape of the lens 12.

【0016】図4は第2の形態による他の実施例で、本例の場合はレンズ位置決め枠8をリフレクタ部上面4B [0016] Figure 4 is a another embodiment according to the second embodiment, the lens positioning frame 8 in the case of this embodiment the reflector upper surface 4B
の四隅部対象位置に設けたこと以外は上記の実施例と変わらない。 Except that provided in the four corners target position no different from the above example. 本発明の第2の形態による実施例によれば、 According to an embodiment of the second aspect of the present invention,
レンズ球心0からLED3迄の距離Rを平凸レンズ12 Lens spherical center 0 planoconvex lens 12 the distance R up to LED3
の半径rに関係なく設定することが可能となる。 It is possible to set regardless of the radius r of. なお、 It should be noted that,
この平凸レンズ12を必ずしも半球より大きくする必要はなく、半球若しくは半球より薄目とした厚さのレンズとすることも可能であり、平凸レンズ12および透光領域7に封入される部材の屈折率、反射壁6の形状等について設定時の選択の自由度を第1の形態の場合に比して増すことができる。 The plano-convex lens 12 need not necessarily be greater than the hemisphere, it is also possible to a lens of hemispherical or thickness was thinner than hemispherical, the refractive index of the member to be sealed in the plano-convex lens 12 and the light-transmitting region 7, the degree of freedom in setting the time of selection for the shape of the reflecting wall 6 can be increased as compared with the case of the first embodiment.

【0017】図5は本発明の第2の形態による更に他の実施例を示す。 [0017] Figure 5 illustrates yet another embodiment according to the second embodiment of the present invention. 本例によるレンズ22は図5に示すように、集光レンズとして機能するレンズ部22Aとレンズ部22Aを支持体4のリフレクタ部上面4Bに位置決め固定するためのフランジ部22Bとを一体とした形で耐熱性透光樹脂により構成する。 Lens 22 according to the present embodiment, as shown in FIG. 5, the shape in which the flange portion 22B for positioning and fixing the lens portion 22A and the lens portions 22A that functions as a condenser lens to the reflector portion upper surface 4B of the support 4 and integral in constituting the heat-resistant light-transmitting resin. 22Cはフランジ部22 22C the flange portion 22
Bの予め穿設した位置決め孔である。 In advance drilled the positioning hole of the B. このような位置決め孔22Cにリフレクタ部上面4Bから突設したピン部4Cをレンズ12の接合固定時に嵌め合わすことで、正確かつ、容易にレンズ22を支持体4に固定することができる。 By adjust fitting such pin portion 4C which projects from the reflector upper surface 4B in the positioning hole 22C at the time of bonding fixation of the lens 12 can be fixed accurately and easily the lens 22 to the support 4. 但し、かかる位置決めの孔22Cとピン部4C However, such positioning holes 22C and the pin portion 4C
との嵌合によらない位置決め手段であってもよい。 It may be a positioning means does not depend on mating with. なお、図5の(C)に示す9はレンズ22の固定時に透光領域7から溢出する接着樹脂を逃すための逃し溝であり、逃し溝9に溢出した樹脂の固化によりレンズ22のレンズ台部22Bを一層強固確実に支持体4上に接合させることが可能となる。 Incidentally, 9 shown in FIG. 5 (C) is a relief groove for miss adhesive resin overflowing from the light transmitting region 7 when fixed lens 22, missed lenses of the lens 22 stand by solidification of extravasation resin in the groove 9 part 22B it is possible to bonded onto more firmly reliably support 4.

【0018】本実施例によれば、微小なレンズ22の形状を成型金型により統一した同一形状にすることができ、しかもそのレンズ部22Aの形状を集光、散光に応じて自在に設定することが可能となる。 According to the present embodiment, it can be made the same shape unified by mold the shape of the micro lens 22, yet freely set in accordance with the shape of the lens portion 22A condenser, a diffuser it becomes possible.

【0019】なお、以上に述べた実施例ではレンズを主として集光のために設けるものとして説明してきたが、 [0019] Incidentally, it has been described as mainly provided for the condenser lens in the embodiment described above,
LED素子の使用状態に応じて散光角度を限定するなど光束に限られた範囲での方向性を持たせるように、レンズの種類とLEDとの間の相対位置および反射壁面の形状を自在に設定することができるという各形態に共通の利点が得られるものである。 Freely set the relative position and wall surfaces of the shape between like to have directionality in a limited range on the light beam, such as to limit the diffuser angle, the type and LED lens in accordance with the use state of the LED element in which common advantages to each form being able to.

【0020】 [0020]

【発明の効果】以上説明してきたように、本発明によれば、リードフレームに保持された発光ダイオードと、前記リードフレームを保持するユニットベースと、一端側が前記ユニットベースに接合される環状のレンズ支持体と、該レンズ支持体の中央部に前記発光ダイオードを囲むように周設され前記発光ダイオードからの出射光を反射する反射壁部と、該反射壁部と前記ユニットベースとによって囲まれた透光領域を塞ぐように前記レンズ支持体の他端側に配置される集光レンズと、該集光レンズを前記レンズ支持体に固定するレンズ固定手段とを具えたことで、光の集散にかかわる配光性を自在に設定して用途向きに作成することが可能となり、特に安定した光軸のまわりの集光性を高めることが可能となり、しかも組立が容易で廉価に As has been described in the foregoing, according to the present invention, a light emitting diode held by the lead frame, a unit base for holding the lead frame, an annular lens which one end is joined to the unit base a support, surrounded and reflection wall disposed around so as to surround the light emitting diode in the central portion of the lens support reflects light emitted from the light emitting diode, the said unit base and said reflection wall portion a condenser lens disposed at the other end of the lens support so as to block the light transmission region, that equipped with a lens fixing means for fixing the condenser lens to the lens support, the collection and distribution of light light distribution was set freely it is possible to create the application direction, the particularly stable it is possible to increase the light collecting properties around the optical axis, yet low cost easy to assemble involved 造することができる。 It is possible to elephants.

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

【図1】本発明の第1の形態による構成例を示す断面図である。 1 is a cross-sectional view showing an example configuration of the first embodiment of the present invention.

【図2】本発明の第1の形態による光の屈折経路例を断面によって示す説明図である。 The refraction path example of light by the first embodiment of the present invention; FIG is an explanatory view showing the cross-section.

【図3】本発明の第2の形態による構成例を示す断面図である。 3 is a cross-sectional view showing an example configuration according to the second embodiment of the present invention.

【図4】本発明の第2の形態による他の構成例をレンズと支持体とに分離して示す斜視図である。 4 is a perspective view showing in isolation a further exemplary configuration of the lens and the support according to a second embodiment of the present invention.

【図5】本発明の第2の形態による更に他の構成例を上面図(A)、側面図(B)および(A)のA−A線断面図(C)によって示す説明図である。 Figure 5 is a top view of still another example of the configuration according to the second embodiment of the present invention (A), is an explanatory diagram showing the side view (B) and A-A line cross-sectional view of (A) (C).

【符号の説明】 DESCRIPTION OF SYMBOLS

0 球心 1 発光ダイオード(LED)ユニット 2 球レンズ 3 LED 4 支持体 4A リフレクタ部 4B 上面 4C ピン部 5 リードフレーム 6,6A,6B 反射壁 7 透光領域 8 レンズ位置決め枠 12 半球型の平凸レンズ 12A 平坦面(取付面) 22 (成形)レンズ 22A レンズ部 22B フランジ部 22C 位置決め孔 n R ,n C屈折率 0 spherical center 1-emitting diode (LED) unit Spherical lens 3 LED 4 support 4A reflector portion 4B upper surface 4C pin 5 leadframe 6, 6A, the 6B reflecting wall 7 translucent regions 8 lens positioning frame 12 hemispherical plano-convex lens 12A flat surface (attachment surface) 22 (forming) lens 22A lens portion 22B flange portion 22C positioning holes n R, n C refractive index

Claims (10)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 リードフレームに保持された発光ダイオードと、 前記リードフレームを保持するユニットベースと、 一端側が前記ユニットベースに接合される環状のレンズ支持体と、 該レンズ支持体の中央部に前記発光ダイオードを囲むように周設され前記発光ダイオードからの出射光を反射する反射壁部と、 該反射壁部と前記ユニットベースとによって囲まれた透光領域を塞ぐように前記レンズ支持体の他端側に配置される集光レンズと、 該集光レンズを前記レンズ支持体に固定するレンズ固定手段とを具えたことを特徴とする発光ダイオードユニット。 And 1. A light emitting diode held by the lead frame, a unit base for holding the lead frame, an annular lens support the one end is joined to the unit base, wherein a central portion of the lens support a reflecting wall portion which is circumferentially provided so as to surround the light-emitting diodes for reflecting light emitted from the light emitting diode, other of the lens support so as to block the light transmission region surrounded by said unit base and said reflection wall portion emitting diode units, wherein the condenser lens arranged on the end side, that comprises a lens fixing means for fixing the condenser lens on the lens support.
  2. 【請求項2】 前記リードフレームと前記ユニットベースと前記レンズ支持体とが一体成形されていることを特徴とする請求項1に記載の発光ダイオードユニット。 Light emitting diode unit of claim 1, wherein said lead frame and said unit base and said lens support is characterized in that it is integrally molded.
  3. 【請求項3】 前記レンズ固定手段は、前記透光領域に充填される透光性接着樹脂であることを特徴とする請求項1または2に記載の発光ダイオードユニット。 Wherein the lens fixing means, the light emitting diode unit of claim 1 or 2, characterized in that a light-transmitting adhesive resin filled in the light transmission region.
  4. 【請求項4】 前記レンズ支持体は、前記反射壁部の壁面を鏡面に仕上げた不透明白色樹脂にて形成されていることを特徴とする請求項1ないし3のいずれかの項に記載の発光ダイオードユニット。 Wherein said lens support is luminescent according to any one of claims 1 to 3, characterized in that the wall surface of the reflecting wall is formed by an opaque white resin mirror finished diode unit.
  5. 【請求項5】 前記集光レンズは、球レンズであることを特徴とする請求項1ないし4のいずれかの項に記載の発光ダイオードユニット。 Wherein said condensing lens, the light emitting diode unit according to any of claims 1 to 4, characterized in that a spherical lens.
  6. 【請求項6】 前記集光レンズは、平凸レンズであることを特徴とする請求項1ないし4のいずれかの項に記載の発光ダイオードユニット。 Wherein said condensing lens, the light emitting diode unit according to any of claims 1 to 4, characterized in that a plano-convex lens.
  7. 【請求項7】 前記反射壁部は、前記集光レンズ側ほど大径となっていることを特徴とする請求項1ないし6のいずれかの項に記載の発光ダイオードユニット。 Wherein said reflecting wall, the light emitting diode unit according to any of claims 1 to 6, characterized in that has a diameter about the condensing lens.
  8. 【請求項8】 前記レンズ支持体の他端面に前記集光レンズの位置決め手段をさらに具えたことを特徴とする請求項1ないし7のいずれかの項に記載の発光ダイオードユニット。 8. The light emitting diode unit according to any of claims 1 to 7, characterized in that comprising further positioning means of said condensing lens on the other end surface of the lens support.
  9. 【請求項9】 前記平凸レンズの外周にフランジ部を形成したことを特徴とする請求項6に記載の発光ダイオードユニット。 9. The light emitting diode unit of claim 6, characterized in that the formation of the flange portion on the outer periphery of the plano-convex lens.
  10. 【請求項10】 前記平凸レンズの凸面形状および屈折率と、前記発光ダイオードから前記平凸レンズの平坦面までの距離および前記透光領域の屈折率との組合せにより、前記平凸レンズからの出射光を集散自在に設定可能とすることを特徴とする請求項6ないし9のいずれかの項に記載の発光ダイオードユニット。 And wherein said flat convex shape of the lens and a refractive index, in combination with the refractive index of the distance and the light transmissive region from the light emitting diode to the flat surface of the plano-convex lens, the light emitted from the plano-convex lens LED unit according to any one of claims 6 to 9, characterized in that a settable distribution center freely.
JP23297295A 1995-09-11 1995-09-11 Light emitting diode unit Pending JPH0983018A (en)

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