JP3159075U

JP3159075U - LED lamp

Info

Publication number: JP3159075U
Application number: JP2010000952U
Authority: JP
Inventors: 加藤　陽弘; 陽弘加藤; 彰人雷久保
Original assignee: Okaya Electric Industry Co Ltd
Current assignee: Okaya Electric Industry Co Ltd
Priority date: 2010-02-17
Filing date: 2010-02-17
Publication date: 2010-05-06
Anticipated expiration: 2020-02-17

Abstract

【課題】前方向だけでなく側方向や後方向からも視認できる広視野角であり、尚且つ、光度の高いＬＥＤランプを提供する。【解決手段】ＬＥＤチップ２８を略リング状の枠体２２で囲繞し、枠体２２上にＬＥＤチップ２８を覆うドーム型と成された透光性の中空外囲体３２を配置する。中空外囲体３２の内面全域に、多数の透光性を有する繊維が立体的に絡み合って形成された不織布３４を配置し、不織布３４に、ＬＥＤチップ２８の発光を所定波長の可視光に変換して放射する蛍光体３３を担持させる。【選択図】図１An LED lamp having a wide viewing angle that can be viewed not only in the front direction but also in the lateral direction and the rear direction, and having a high luminous intensity. An LED chip is surrounded by a substantially ring-shaped frame body, and a translucent hollow outer body formed in a dome shape that covers the LED chip is disposed on the frame body. A non-woven fabric 34 in which a large number of light-transmitting fibers are three-dimensionally entangled is arranged over the entire inner surface of the hollow envelope 32, and the light emitted from the LED chip 28 is converted into visible light having a predetermined wavelength on the non-woven fabric 34. Then, the phosphor 33 that emits the light is supported. [Selection] Figure 1

Description

この考案はＬＥＤランプ（発光ダイオードランプ）に係り、特に、前方向だけでなく側方向や後方向からも視認できる広視野角であり、尚且つ光度の高いＬＥＤランプに関する。 The present invention relates to an LED lamp (light-emitting diode lamp), and more particularly to an LED lamp having a wide viewing angle that can be viewed not only from the front direction but also from the side direction and the rear direction, and having high luminous intensity.

近年、白熱電球や蛍光灯等に替わる照明用光源として、低消費電力で長寿命なＬＥＤ（Light Emitting Diode）ランプが注目されている。
従来の一般的なＬＥＤランプは、ＬＥＤチップを樹脂等より成る砲弾型の透光性外囲体で覆った構造となっているが、この構造では透光性外囲体の先端部に凸レンズが形成されるため、前方向への光の出射量が多く明るく発光するものの、側方向や後方向へは光が殆ど出射せず、視野角が狭かった。 2. Description of the Related Art In recent years, LED (Light Emitting Diode) lamps with low power consumption and long life are attracting attention as illumination light sources that replace incandescent bulbs and fluorescent lamps.
A conventional general LED lamp has a structure in which an LED chip is covered with a shell-type translucent envelope made of resin or the like. In this structure, a convex lens is provided at the tip of the translucent envelope. As a result, the amount of light emitted in the forward direction is large and the light is emitted brightly, but light is hardly emitted in the lateral direction and the backward direction, and the viewing angle is narrow.

このため、例えば、特許文献１においては、ＬＥＤチップを覆う透光性外囲体の表面に、球面状又は多角形状のビーズ、突起又は凹部を設け、ＬＥＤチップからの光を上記ビーズ、突起又は凹部で多方向に拡散させることにより、前方向だけでなく、側方向や後方向からも光を視認できるＬＥＤランプが提案されている。
特開２０００−４０５０号公報 For this reason, for example, in Patent Document 1, spherical or polygonal beads, protrusions, or recesses are provided on the surface of the translucent envelope that covers the LED chip, and light from the LED chip is transmitted to the beads, protrusions, or There has been proposed an LED lamp in which light can be visually recognized not only from the front direction but also from the side direction and the rear direction by diffusing in multiple directions with the concave portions.
Japanese Patent Laid-Open No. 2000-4050

しかしながら、特許文献１で提案されたＬＥＤランプは、発光源であるＬＥＤチップから発光された光を拡散させて多方向へ放射するものであるため、光が拡散することによる光度低下の問題を生じていた。 However, the LED lamp proposed in Patent Document 1 diffuses the light emitted from the LED chip, which is a light source, and radiates it in multiple directions, which causes a problem of a decrease in luminous intensity due to the diffusion of light. It was.

本考案は、上記従来の問題点に鑑みてなされたものであり、その目的は、前方向だけでなく側方向や後方向からも視認できる広視野角であり、尚且つ、光度の高いＬＥＤランプを実現することにある。 The present invention has been made in view of the above-mentioned conventional problems, and its purpose is a wide viewing angle that can be viewed not only from the front direction but also from the side direction and the rear direction, and has a high luminous intensity. Is to realize.

上記の目的を達成するため、本考案の請求項１に記載のＬＥＤランプは、
ＬＥＤチップと、該ＬＥＤチップを覆う透光性の中空外囲体を備えたＬＥＤランプであって、上記中空外囲体の内面全域に、多数の透光性を有する繊維が立体的に絡み合って形成された不織布を配置すると共に、上記不織布に、ＬＥＤチップの発光を所定波長の可視光に変換して放射する蛍光体を担持させたことを特徴とする。 In order to achieve the above object, an LED lamp according to claim 1 of the present invention comprises:
An LED lamp comprising an LED chip and a light-transmitting hollow envelope covering the LED chip, wherein a large number of light-transmitting fibers are entangled three-dimensionally over the entire inner surface of the hollow envelope. The formed non-woven fabric is disposed, and the non-woven fabric is supported by a phosphor that converts the emitted light of the LED chip into visible light having a predetermined wavelength and emits it.

本考案の請求項２に記載のＬＥＤランプは、
ＬＥＤチップと、該ＬＥＤチップを覆う透光性の中空外囲体を備えたＬＥＤランプであって、上記中空外囲体の先端に凸レンズ部を形成すると共に、上記中空外囲体の内面全域に、多数の透光性を有する繊維が立体的に絡み合って形成された不織布を配置し、さらに、上記不織布に、ＬＥＤチップの発光を所定波長の可視光に変換して放射する蛍光体を担持させたことを特徴とする。 The LED lamp according to claim 2 of the present invention is
An LED lamp comprising an LED chip and a light-transmitting hollow envelope covering the LED chip, wherein a convex lens portion is formed at a tip of the hollow envelope, and the entire inner surface of the hollow envelope is formed. A non-woven fabric formed by three-dimensionally entwining a large number of translucent fibers, and further supporting the phosphor that emits light by converting the light emitted from the LED chip into visible light of a predetermined wavelength. It is characterized by that.

本考案の請求項３に記載のＬＥＤランプは、請求項２に記載のＬＥＤランプにおいて、
上記凸レンズ部が、中空外囲体の先端の肉厚を最大とすると共に、先端から周縁に向かって漸次薄肉となる球面状と成すことによって形成されていることを特徴とする。 The LED lamp according to claim 3 of the present invention is the LED lamp according to claim 2,
The convex lens portion is formed by maximizing the thickness of the tip of the hollow envelope and forming a spherical shape that gradually becomes thinner from the tip toward the periphery.

本考案の請求項４に記載のＬＥＤランプは、
ＬＥＤチップと、該ＬＥＤチップを覆う透光性の中空外囲体を備えたＬＥＤランプであって、上記中空外囲体の先端内面に、透光材を接合して凸レンズ部を形成すると共に、上記透光材が接合された部分以外の中空外囲体の内面全域及び透光材の内面全域に、多数の透光性を有する繊維が立体的に絡み合って形成された不織布を配置し、さらに、上記不織布に、ＬＥＤチップの発光を所定波長の可視光に変換して放射する蛍光体を担持させたことを特徴とする。 The LED lamp according to claim 4 of the present invention is
An LED lamp comprising an LED chip and a translucent hollow envelope covering the LED chip, and a convex lens portion is formed by bonding a translucent material to the inner surface of the tip of the hollow envelope, A non-woven fabric formed by three-dimensionally intertwining fibers having a large number of translucency is arranged over the entire inner surface of the hollow envelope other than the portion where the translucent material is joined and the entire inner surface of the translucent material. The non-woven fabric is supported by a phosphor that converts the light emitted from the LED chip into visible light having a predetermined wavelength and emits it.

本考案の請求項５に記載のＬＥＤランプは、請求項１〜４の何れに記載のＬＥＤランプにおいて、
上記ＬＥＤチップを枠体で囲繞すると共に、該枠体上に、ＬＥＤチップを覆うドーム型の中空外囲体を配置したことを特徴とする。 The LED lamp according to claim 5 of the present invention is the LED lamp according to any one of claims 1 to 4,
The LED chip is surrounded by a frame, and a dome-shaped hollow envelope covering the LED chip is disposed on the frame.

本考案の請求項６に記載のＬＥＤランプは、請求項１〜４の何れに記載のＬＥＤランプにおいて、
上記ＬＥＤチップを枠体で囲繞すると共に、該枠体上に、ＬＥＤチップを覆い、側周面が上記枠体の外端から外方へ膨出している略球状型の中空外囲体を配置したことを特徴とする。 The LED lamp according to claim 6 of the present invention is the LED lamp according to any one of claims 1 to 4,
The LED chip is surrounded by a frame, and a substantially spherical hollow envelope that covers the LED chip and bulges outward from the outer end of the frame is disposed on the frame. It is characterized by that.

本考案の請求項７に記載のＬＥＤランプは、請求項１〜４の何れに記載のＬＥＤランプにおいて、
上記ＬＥＤチップを砲弾型の中空外囲体で覆うと共に、該中空外囲体の内部に、透光性を有する充填材を封入したことを特徴とする。 The LED lamp according to claim 7 of the present invention is the LED lamp according to any one of claims 1 to 4,
The LED chip is covered with a bullet-type hollow envelope, and a light-transmitting filler is enclosed in the hollow envelope.

本考案の請求項１に記載のＬＥＤランプにあっては、ＬＥＤチップを覆う透光性の中空外囲体の内面全域に、蛍光体を担持した不織布を配置したので、蛍光体で波長変換された可視光が上記不織布を構成する多数の繊維で拡散されて中空外囲体の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、可視光の発光源である蛍光体を、中空外囲体の内面に配置した不織布に担持させたので、可視光が出射する中空外囲体の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。 In the LED lamp according to claim 1 of the present invention, since the non-woven fabric carrying the phosphor is disposed on the entire inner surface of the translucent hollow envelope covering the LED chip, the wavelength is converted by the phosphor. The visible light is diffused by many fibers constituting the nonwoven fabric and emitted from the entire surface of the hollow envelope in various directions, so that it can be viewed not only from the front but also from the side and from the rear. A square LED lamp can be realized.
Moreover, since the phosphor, which is a visible light source, is carried on the nonwoven fabric disposed on the inner surface of the hollow envelope, the light source exists near the surface of the hollow envelope from which visible light is emitted. An LED lamp with high luminous intensity is realized.

また、本考案の請求項２〜３に記載のＬＥＤランプにあっては、ＬＥＤチップを覆う透光性の中空外囲体の内面全域に、蛍光体を担持した不織布を配置したので、蛍光体で波長変換された可視光が上記不織布を構成する多数の繊維で拡散されて中空外囲体の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、可視光の発光源である蛍光体を、中空外囲体の内面に配置した不織布に担持させたので、可視光が出射する中空外囲体の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、ＬＥＤチップを覆う中空外囲体の先端に凸レンズ部を形成したことから、中空外囲体先端方向へ向かう光が、上記凸レンズ部で集光されて前方向へ出射されるので、広視野角でありながら、側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Further, in the LED lamp according to claims 2 to 3 of the present invention, since the non-woven fabric carrying the phosphor is arranged over the entire inner surface of the translucent hollow envelope covering the LED chip, the phosphor The wavelength-converted visible light is diffused by a number of fibers constituting the nonwoven fabric and emitted from the entire surface of the hollow envelope in various directions, not only from the front direction but also from the side direction and the rear direction. A wide viewing angle LED lamp can be realized.
Moreover, since the phosphor, which is a visible light source, is carried on the nonwoven fabric disposed on the inner surface of the hollow envelope, the light source exists near the surface of the hollow envelope from which visible light is emitted. An LED lamp with high luminous intensity is realized.
Furthermore, since the convex lens portion is formed at the tip of the hollow envelope covering the LED chip, the light toward the tip of the hollow envelope is collected by the convex lens portion and emitted forward, so that the wide field of view Although it is a corner, an LED lamp having a higher luminous intensity in the forward direction than in the lateral direction or the backward direction can be realized.

本考案の請求項４に記載のＬＥＤランプにあっては、透光材が接合された部分以外の中空外囲体の内面全域及び透光材の内面全域に、蛍光体を担持した不織布を配置したので、蛍光体で波長変換された可視光が上記不織布を構成する多数の繊維で拡散されて中空外囲体の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、可視光の発光源である蛍光体を、中空外囲体の内面及び凸レンズ部を構成する透光材の内面に配置した不織布に担持させたので、可視光が出射する中空外囲体の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、ＬＥＤチップを覆う中空外囲体の先端に凸レンズ部を形成したことから、中空外囲体先端方向へ向かう光が、上記凸レンズ部で集光されて前方向へ出射されるので、広視野角でありながら、側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 In the LED lamp according to claim 4 of the present invention, the non-woven fabric carrying the phosphor is disposed over the entire inner surface of the hollow envelope and the entire inner surface of the translucent material other than the portion where the translucent material is joined. Therefore, the visible light wavelength-converted by the phosphor is diffused by a large number of fibers constituting the nonwoven fabric and emitted from the entire surface of the hollow envelope in various directions. In addition, it is possible to realize an LED lamp with a wide viewing angle that can be viewed from the rear direction.
Moreover, since the phosphor, which is a light source of visible light, is carried on the nonwoven fabric disposed on the inner surface of the hollow envelope and the inner surface of the translucent material constituting the convex lens portion, the hollow envelope from which visible light is emitted A light emitting source exists near the surface, and an LED lamp with high luminous intensity is realized.
Furthermore, since the convex lens portion is formed at the tip of the hollow envelope covering the LED chip, the light toward the tip of the hollow envelope is collected by the convex lens portion and emitted forward, so that the wide field of view Although it is a corner, an LED lamp having a higher luminous intensity in the forward direction than in the lateral direction or the backward direction can be realized.

以下、図面に基づき、本考案に係るＬＥＤランプの実施形態を説明する。
本考案に係る第１のＬＥＤランプ10は図１及び図２に示すように、ＬＥＤ素子12と、枠部材14と、放熱部材16を備え、これらを一体化して構成されている。図１において、18は高熱伝導性絶縁接着材であり、該高熱伝導性絶縁接着材18を介してＬＥＤ素子12と放熱部材16とが接続されている。該高熱伝導性絶縁接着材18の厚さは２０〜３０μｍと成されている。 Hereinafter, an embodiment of an LED lamp according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the first LED lamp 10 according to the present invention includes an LED element 12, a frame member 14, and a heat radiating member 16, and these are integrated. In FIG. 1, reference numeral 18 denotes a high heat conductive insulating adhesive, and the LED element 12 and the heat radiating member 16 are connected via the high heat conductive insulating adhesive 18. The high thermal conductive insulating adhesive 18 has a thickness of 20 to 30 μm.

ＬＥＤ素子12は、図３及び図４に示すように、樹脂等より成り、孔20が形成された略リング状の枠体22と、第１のリードフレーム24及び第２のリードフレーム26を有している。これらリードフレーム24，26の板厚は０．３mm程度と成されている。
第１のリードフレーム24は、上記枠体22の底面22ａの略全面を覆う略円板状の先端部24ａと、枠体22を貫通して外部に導出される後端部24ｂを有している。 As shown in FIGS. 3 and 4, the LED element 12 includes a substantially ring-shaped frame 22 made of resin or the like and having a hole 20, and a first lead frame 24 and a second lead frame 26. is doing. The lead frames 24 and 26 have a thickness of about 0.3 mm.
The first lead frame 24 has a substantially disc-shaped front end portion 24a that covers substantially the entire bottom surface 22a of the frame body 22, and a rear end portion 24b that passes through the frame body 22 and is led out to the outside. Yes.

第１のリードフレーム24の先端部24ａの一部は上記孔20内に露出しており、該孔16内に露出した第１のリードフレーム24の先端部24ａに、ＬＥＤチップ28をダイボンドすることにより、第１のリードフレーム24とＬＥＤチップ28底面の一方の電極（図示せず）とを電気的に接続している。この結果、ＬＥＤチップ28は、略リング状の枠体22で囲繞されることとなる。 A part of the tip 24a of the first lead frame 24 is exposed in the hole 20, and the LED chip 28 is die-bonded to the tip 24a of the first lead frame 24 exposed in the hole 16. Thus, the first lead frame 24 and one electrode (not shown) on the bottom surface of the LED chip 28 are electrically connected. As a result, the LED chip 28 is surrounded by the substantially ring-shaped frame 22.

また、第２のリードフレーム26は、上記枠体22を貫通して孔20内に露出する先端部26ａと、枠体22を貫通して外部に導出される後端部26ｂを有しており、第２のリードフレーム26の先端部26ａと、上記ＬＥＤチップ28上面の他方の電極（図示せず）とをボンディングワイヤ30を介して電気的に接続して成る。 The second lead frame 26 has a front end portion 26a penetrating the frame body 22 and exposed in the hole 20, and a rear end portion 26b penetrating the frame body 22 and led out to the outside. The distal end portion 26 a of the second lead frame 26 and the other electrode (not shown) on the upper surface of the LED chip 28 are electrically connected via a bonding wire 30.

上記第１のリードフレーム24の先端部24ａと、第２のリードフレーム26の先端部26ａは、上下方向に所定の間隙を設けて対向配置されることにより、相互に絶縁されている。
而して、第１のＬＥＤランプ10にあっては、第１のリードフレーム24の先端部24ａと、第２のリードフレーム26の先端部26ａを同一平面上に配置せず、上下方向に所定の間隙を設けて対向配置したことにより、第１のリードフレーム24の先端部24で枠体22の底面22ａの略全面を覆っても、第１のリードフレーム24と第２のリードフレーム26間の絶縁性を確保できるのである。 The distal end portion 24a of the first lead frame 24 and the distal end portion 26a of the second lead frame 26 are insulated from each other by being arranged to face each other with a predetermined gap in the vertical direction.
Thus, in the first LED lamp 10, the front end portion 24a of the first lead frame 24 and the front end portion 26a of the second lead frame 26 are not arranged on the same plane, and are predetermined in the vertical direction. Since the front end portion 24 of the first lead frame 24 covers the substantially entire bottom surface 22a of the frame body 22, the gap between the first lead frame 24 and the second lead frame 26 is provided. Insulating properties can be secured.

上記ＬＥＤチップ28は、電圧が印加されると、後述する蛍光体を励起する紫外線や青色可視光等の所定波長の光を発光し、例えば、窒化ガリウム系半導体結晶で構成されている。 When a voltage is applied, the LED chip 28 emits light of a predetermined wavelength such as ultraviolet light or blue visible light that excites a phosphor described later, and is made of, for example, a gallium nitride based semiconductor crystal.

図１及び図３において、32は、球面を有するドーム型と成された透光性の中空外囲体であり、該中空外囲体32をＬＥＤ素子12の枠体22上に配置することにより、ＬＥＤチップ28を覆っている。
上記中空外囲体32は、例えば、透光性ガラスや、アクリル、ポリカーボネート、エポキシ等の透光性樹脂で構成することができる。尚、無機材料であるガラスで中空外囲体32を構成した場合には、無機材料はＬＥＤチップ28から発光される高エネルギーの短波長光を殆ど吸収せず、また、短波長光を吸収したとしても分子結合力が強いため劣化することが殆どないため、耐久性に優れている。 In FIGS. 1 and 3, reference numeral 32 denotes a light-transmitting hollow envelope formed as a dome shape having a spherical surface. By arranging the hollow envelope 32 on the frame body 22 of the LED element 12, The LED chip 28 is covered.
The hollow envelope 32 can be made of, for example, translucent glass, translucent resin such as acrylic, polycarbonate, or epoxy. When the hollow envelope 32 is made of glass, which is an inorganic material, the inorganic material hardly absorbs high-energy short-wavelength light emitted from the LED chip 28 and absorbs short-wavelength light. However, since the molecular bonding force is strong, there is almost no deterioration, so that the durability is excellent.

また、上記中空外囲体32の内面全域に、蛍光体33を担持して成る不織布34が配置されている。該不織布34は、図５及び図６に示すように、多数の透光性を有する繊維35が立体的に絡み合って形成されるものであり、繊維35間には多数の空隙37（図６参照）が形成されており、また、多数の繊維35が立体的に絡み合っているため、単位体積当たりの繊維35の表面積が極めて大きいものである。
上記蛍光体33は、不織布34を構成する繊維35の表面に被着・担持されているものであり、図７に示すように、繊維35の表面に、蛍光体33の粒子が多数被着されている。繊維35の表面に蛍光体33を被着させる方法としては、例えば、粒子状の蛍光体33を分散させた透光性接着液中に上記不織布34を浸漬する方法や、蛍光体33分散させた透光性接着液を不織布34に吹付塗布する方法等がある。而して、単位体積当たりの繊維35の表面積が極めて大きい不織布34を構成する繊維35の表面に蛍光体33を担持せしめたことから、蛍光体33の量及び表面積を大きく確保することができる。
尚、不織布34を構成する繊維35の繊維密度や、不織布34の厚さ、目付等を適宜調整することにより、不織布34を構成する繊維35の総表面積を任意に増減可能である。 A non-woven fabric 34 carrying a phosphor 33 is disposed on the entire inner surface of the hollow envelope 32. As shown in FIGS. 5 and 6, the nonwoven fabric 34 is formed by three-dimensionally intertwining a large number of light-transmitting fibers 35, and a large number of voids 37 (see FIG. 6) between the fibers 35. ) And a large number of fibers 35 are entangled three-dimensionally, so that the surface area of the fibers 35 per unit volume is extremely large.
The phosphor 33 is deposited and supported on the surface of the fiber 35 constituting the nonwoven fabric 34. As shown in FIG. 7, a large number of particles of the phosphor 33 are deposited on the surface of the fiber 35. ing. Examples of the method for depositing the phosphor 33 on the surface of the fiber 35 include, for example, a method of immersing the nonwoven fabric 34 in a light-transmitting adhesive liquid in which the particulate phosphor 33 is dispersed, There is a method of spraying and applying a translucent adhesive liquid to the nonwoven fabric 34. Thus, since the phosphor 33 is supported on the surface of the fiber 35 constituting the nonwoven fabric 34 in which the surface area of the fiber 35 per unit volume is extremely large, a large amount and surface area of the phosphor 33 can be secured.
The total surface area of the fibers 35 constituting the nonwoven fabric 34 can be arbitrarily increased or decreased by appropriately adjusting the fiber density of the fibers 35 constituting the nonwoven fabric 34, the thickness of the nonwoven fabric 34, the basis weight, and the like.

上記繊維35は、ナイロン、ポリエステル、アクリル、ポリプロピレン、ポリ塩化ビニル、フッ素樹脂等の樹脂繊維、レーヨン等のセルロース系の化学繊維、ガラス繊維等の短繊維から成り、その直径は１〜５０μｍ、長さは０．５〜２０mm、繊維密度は３０〜１００ｇ／ｃｍ^２程度である。
尚、長さが５０〜１００mm程度の長繊維から成る繊維35を用いることも勿論可能である。 The fiber 35 is made of resin fibers such as nylon, polyester, acrylic, polypropylene, polyvinyl chloride, and fluorine resin, cellulosic chemical fibers such as rayon, and short fibers such as glass fibers, and the diameter is 1 to 50 μm and long. The thickness is 0.5 to 20 mm, and the fiber density is about 30 to 100 g / cm ² .
Of course, it is also possible to use fibers 35 made of long fibers having a length of about 50 to 100 mm.

上記蛍光体33としては、例えば以下の組成のものを用いることができる。
紫外線を赤色可視光に変換する赤色発光用の蛍光体33として、Ｍ_２Ｏ_２Ｓ：Ｅｕ（Ｍは、Ｌａ、Ｇｄ、Ｙの何れか１種）、0.5ＭｇＦ_２・3.5ＭｇＯ・ＧｅＯ_２：Ｍｎ、2ＭｇＯ・2ＬｉＯ_２・Ｓｂ_２Ｏ_３：Ｍｎ、Ｙ（Ｐ，Ｖ）Ｏ₄：Ｅｕ、ＹＶＯ₄：Ｅｕ、（Ｓｒ，Ｍｇ）₃（ＰＯ₄）：Ｓｎ、Ｙ_２Ｏ_３：Ｅｕ、ＣａＳｉＯ_３：Ｐｂ，Ｍｎ等がある。
また、紫外線を緑色可視光に変換する緑色発光用の蛍光体33として、ＢａＭｇ_２Ａｌ_１６Ｏ_２７：Ｅｕ，Ｍｎ、Ｚｎ_２ＳｉＯ₄：Ｍｎ、（Ｃｅ，Ｔｂ，Ｍｎ）ＭｇＡｌ_１１Ｏ_１９、ＬａＰＯ₄：Ｃｅ，Ｔｂ、（Ｃｅ，Ｔｂ）ＭｇＡｌ_１１Ｏ_１９、Ｙ_２ＳｉＯ_５：Ｃｅ，Ｔｂ、ＺｎＳ：Ｃｕ，Ａｌ、ＺｎＳ：Ｃｕ，Ａｕ，Ａｌ、（Ｚｎ，Ｃｄ）Ｓ：Ｃｕ，Ａｌ、ＳｒＡｌ_２Ｏ_４：Ｅｕ、ＳｒＡｌ_２Ｏ_４：Ｅｕ，Ｄｙ、Ｓｒ_４Ａｌ_１４Ｏ_２５：Ｅｕ，Ｄｙ、Ｙ_３Ａｌ_５Ｏ_１２：Ｔｂ、Ｙ_３（Ａｌ，Ｇａ）_５Ｏ_１２：Ｔｂ、Ｙ_３Ａｌ_５Ｏ_１２：Ｃｅ、Ｙ_３（Ａｌ，Ｇａ）_５Ｏ_１２：Ｃｅ等がある。
更に、紫外線を青色可視光に変換する青色発光用の蛍光体33として、(ＳｒＣａＢａ)_５(ＰＯ_４)_３Ｃｌ：Ｅｕ、ＢａＭｇ_２Ａｌ_１６Ｏ_２７：Ｅｕ、（Ｓｒ，Ｍｇ）_２Ｐ_２Ｏ₇：Ｅｕ、Ｓｒ_２Ｐ_２Ｏ₇：Ｅｕ、Ｓｒ_２Ｐ_２Ｏ_７：Ｓｎ、Ｓｒ_５（ＰＯ₄）_３Ｃｌ：Ｅｕ、ＢａＭｇ_２Ａｌ_１６Ｏ_２７：Ｅｕ、ＣａＷＯ₄、ＣａＷＯ₄：Ｐｂ、ＺｎＳ：Ａｇ，Ｃｌ、ＺｎＳ：Ａｇ，Ａｌ、(Ｓｒ，Ｃａ，Ｍｇ)_１０(ＰＯ_４)_６Ｃｌ_２：Ｅｕ等がある。
また、青色可視光を発光するＬＥＤチップを光源に用いて白色光を得る場合等において、ＬＥＤチップから放射される青色可視光を緑色可視光に変換する緑色発光用の蛍光体33として、Ｙ_３（Ａｌ，Ｇａ）_５Ｏ_１２：Ｃｅ、ＳｒＧａ_２Ｓ_４：Ｅｕ、Ｃａ_３Ｓｃ_２Ｓｉ_３Ｏ_１２：Ｃｅ、α−ＳｉＡｌＯＮ：Ｅｕ、β−ＳｉＡｌＯＮ：Ｅｕ等がある。
さらに、青色可視光を発光するＬＥＤチップを光源に用いた場合等において、ＬＥＤチップから放射される青色可視光を赤色可視光に変換する赤色発光用の蛍光体33として、（Ｓｒ，Ｃａ）Ｓ：Ｅｕ、（Ｃａ，Ｓｒ）_２Ｓｉ_５Ｎ_８：Ｅｕ、ＣａＳｉＮ_２：Ｅｕ、ＣａＡｌＳｉＮ_３：Ｅｕ等がある。
上記赤色発光用の蛍光体33、緑色発光用の蛍光体33、青色発光用の蛍光体33を適宜選択・混合して用いることで、種々の色の発色が可能である。
尚、蛍光体33は、有機、無機の蛍光染料や、有機、無機の蛍光顔料を含むものである。 As the phosphor 33, for example, one having the following composition can be used.
As a phosphor 33 for red light emission that converts ultraviolet light into red visible light, M ₂ O ₂ S: Eu (M is any one of La, Gd, and Y), 0.5 MgF ₂ .3.5MgO.GeO ₂ : _{_{Mn, 2MgO · 2LiO 2 · Sb}} 2 O 3: Mn, Y (P, V) O 4: Eu, YVO 4: Eu, (Sr, Mg) 3 (PO 4): Sn, Y 2 O 3: Eu, CaSiO ₃ : Pb, Mn, etc.
Further, as phosphors 33 for green light emission that converts ultraviolet light into green visible light, BaMg ₂ Al ₁₆ O ₂₇ : Eu, Mn, Zn ₂ SiO ₄ : Mn, (Ce, Tb, Mn) MgAl ₁₁ O ₁₉ , LaPO ₄ : Ce, Tb, (Ce, Tb) MgAl ₁₁ O ₁₉ , Y ₂ SiO ₅ : Ce, Tb, ZnS: Cu, Al, ZnS: Cu, Au, Al, (Zn, Cd) S: Cu, Al, SrAl ₂ O ₄ : Eu, SrAl ₂ O ₄ : Eu, Dy, Sr ₄ Al ₁₄ O ₂₅ : Eu, Dy, Y ₃ Al ₅ O ₁₂ : Tb, Y ₃ (Al, Ga) ₅ O ₁₂ : Tb, Y ₃ Al ₅ O ₁₂ : Ce, Y ₃ (Al, Ga) ₅ O ₁₂ : Ce, and the like.
Furthermore, as a phosphor 33 for blue light emission that converts ultraviolet light into blue visible light, (SrCaBa) ₅ (PO ₄ ) ₃ Cl: Eu, BaMg ₂ Al ₁₆ O ₂₇ : Eu, (Sr, Mg) ₂ P ₂ O ₇ : Eu, Sr ₂ P ₂ O ₇ : Eu, Sr ₂ P ₂ O ₇ : Sn, Sr ₅ (PO ₄ ) ₃ Cl: Eu, BaMg ₂ Al ₁₆ O ₂₇ : Eu, CaWO ₄ , CaWO ₄ : Pb, ZnS: Ag, Cl, ZnS: Ag, Al, (Sr, Ca, Mg) 10 (PO 4) 6 Cl 2: there is Eu and the like.
In addition, when white light is obtained using an LED chip that emits blue visible light as a light source, Y ₃ is used as a phosphor 33 for green light emission that converts blue visible light emitted from the LED chip into green visible light. (Al, Ga) ₅ O ₁₂ : Ce, SrGa ₂ S ₄ : Eu, Ca ₃ Sc ₂ Si ₃ O ₁₂ : Ce, α-SiAlON: Eu, β-SiAlON: Eu, and the like.
Further, when an LED chip that emits blue visible light is used as a light source, (Sr, Ca) S is used as a red light emitting phosphor 33 that converts blue visible light emitted from the LED chip into red visible light. : Eu, (Ca, Sr) ₂ Si ₅ N ₈ : Eu, CaSiN ₂ : Eu, CaAlSiN ₃ : Eu, and the like.
Various colors can be developed by appropriately selecting and mixing the phosphor 33 for red light emission, the phosphor 33 for green light emission, and the phosphor 33 for blue light emission.
The phosphor 33 includes organic and inorganic fluorescent dyes and organic and inorganic fluorescent pigments.

上記不織布34は、予め中空外囲体32の内面形状に合わせて成形しておき、これを透光性樹脂や透光性無機結合剤等の透光性接着剤を用いて中空外囲体32の内面に接着される。
上記透光性無機結合剤としては、例えば、アルカリシリケート結合物、エチルシリケート結合物、アルコキシシラン結合物、有機官能基を部分的に導入したアルコキシシラン結合物及び有機ポリマーを反応させたアルコキシシラン結合物等の無機結合材やハイブリッド系無機結合材を好適に用いることができる。 The non-woven fabric 34 is molded in advance according to the shape of the inner surface of the hollow envelope 32, and the hollow envelope 32 is formed using a translucent adhesive such as a translucent resin or a translucent inorganic binder. Bonded to the inner surface of
Examples of the translucent inorganic binder include, for example, an alkali silicate bond, an ethyl silicate bond, an alkoxysilane bond, an alkoxysilane bond in which an organic functional group is partially introduced, and an alkoxysilane bond obtained by reacting an organic polymer. An inorganic binder such as a product or a hybrid inorganic binder can be suitably used.

図８〜図１１は、放熱部材16を示すものであり、図８は正面図、図９は平面図、図１０は側面図、図１１は図９のＢ−Ｂ断面図である。
放熱部材16は、熱伝導性が良好なアルミニウム等の導電材料で構成されており、本体部36と、一対の切欠部38（図９）を有している。 8 to 11 show the heat radiating member 16. FIG. 8 is a front view, FIG. 9 is a plan view, FIG. 10 is a side view, and FIG.
The heat radiating member 16 is made of a conductive material such as aluminum having good thermal conductivity, and has a main body portion 36 and a pair of notches 38 (FIG. 9).

図１２〜図１４は、枠部材14を示すものであり、図１２は平面図、図１３は側面図、図１４は図１２のＣ−Ｃ断面図である。
枠部材14は、樹脂等の絶縁材料で構成されており、導電材料で構成された上記放熱部材16と、ＬＥＤ素子12の第１のリードフレーム24、第２のリードフレーム26との絶縁性を確保するために用いられるものである。 12-14 shows the frame member 14, FIG. 12 is a top view, FIG. 13 is a side view, FIG. 14 is CC sectional drawing of FIG.
The frame member 14 is made of an insulating material such as a resin, and provides insulation between the heat dissipation member 16 made of a conductive material and the first lead frame 24 and the second lead frame 26 of the LED element 12. It is used to secure.

上記枠部材14は、上記ＬＥＤ素子12の枠体22の側周面22ｂ（図３参照）に当接して囲繞する略リング状の本体部40と、該本体部40の下端に形成され、上記放熱部材16の切欠部38形成位置の本体部36の側周面36ａ（図９参照）に当接して覆う一対の垂下部42と、本体部40上端から垂下部42下端に至るまで形成された一対の切欠部44を有している。
また、上記垂下部42には、ＬＥＤ素子12を載置する段部46が形成されており、該段部46にＬＥＤ素子12を載置した際、ＬＥＤ素子12の第１のリードフレーム24先端部24ａと放熱部材16との間に２０〜３０μｍの間隙が形成されるよう設計されている。
さらに、上記切欠部44の幅は、ＬＥＤ素子12の第１のリードフレーム24及び第２のリードフレーム26の幅と略同一と成されている。 The frame member 14 is formed at a substantially ring-shaped main body portion 40 that abuts and surrounds a side peripheral surface 22b (see FIG. 3) of the frame body 22 of the LED element 12, and a lower end of the main body portion 40. A pair of drooping portions 42 that contact and cover the side peripheral surface 36a (see FIG. 9) of the main body portion 36 at the position where the notch 38 of the heat radiating member 16 is formed, and formed from the upper end of the main body portion 40 to the lower end of the drooping portion 42. A pair of notches 44 is provided.
The hanging portion 42 is formed with a step portion 46 on which the LED element 12 is placed. When the LED element 12 is placed on the step portion 46, the tip of the first lead frame 24 of the LED element 12 is placed. It is designed such that a gap of 20 to 30 μm is formed between the portion 24a and the heat radiating member 16.
Further, the width of the notch 44 is substantially the same as the width of the first lead frame 24 and the second lead frame 26 of the LED element 12.

上記ＬＥＤ素子12、枠部材14、放熱部材16は、図１５に示す要領で一体化される。すなわち、表面に高熱伝導性絶縁接着材18を２０〜３０μｍの厚さで被着した放熱部材16に枠部材14を嵌合し、以て、放熱部材16の切欠部38形成位置の本体部側周面36ａを、枠部材14の垂下部42で覆う。
次に、ＬＥＤ素子12を、枠部材14の垂下部42の段部46上に載置し、ＬＥＤ素子12の枠体22の側周面22ｂを、枠部材14の本体部40で囲繞することにより、ＬＥＤ素子12と枠部材14との嵌合を行う。
この結果、ＬＥＤ素子12の枠体底面の22ａの略全面を覆う第１のリードフレーム先端部24ａと放熱部材16とが高熱伝導性絶縁接着材18を介して接続され、上記第１のＬＥＤランプ10が完成する。 The LED element 12, the frame member 14, and the heat dissipation member 16 are integrated in the manner shown in FIG. That is, the frame member 14 is fitted to the heat radiating member 16 having a high heat conductive insulating adhesive 18 applied to the surface thereof in a thickness of 20 to 30 μm, so that the notch 38 forming position of the heat radiating member 16 is located on the main body side. The peripheral surface 36 a is covered with the hanging part 42 of the frame member 14.
Next, the LED element 12 is placed on the step portion 46 of the hanging portion 42 of the frame member 14, and the side peripheral surface 22 b of the frame body 22 of the LED element 12 is surrounded by the main body portion 40 of the frame member 14. Thus, the LED element 12 and the frame member 14 are fitted.
As a result, the first lead frame tip 24a covering the substantially entire surface 22a of the bottom surface of the frame of the LED element 12 and the heat radiating member 16 are connected via the high thermal conductive insulating adhesive 18, and the first LED lamp 10 is completed.

上記の通り、枠部材14の切欠部44の幅が、ＬＥＤ素子12の第１のリードフレーム24及び第２のリードフレーム26の幅と略同一と成されているので、第１のリードフレーム24及び第２のリードフレーム26を上記切欠部44内に挿通することにより、ＬＥＤ素子12と枠部材14との嵌合時の位置決めを容易に行うことができると共に、ＬＥＤ素子12の第１のリードフレーム24及び第２のリードフレーム26が切欠部44内でガタツキを生じることがなく、ＬＥＤ素子12と枠部材14とを強固に固定できる。 As described above, the width of the cutout portion 44 of the frame member 14 is substantially the same as the widths of the first lead frame 24 and the second lead frame 26 of the LED element 12. By inserting the second lead frame 26 into the notch 44, the LED element 12 and the frame member 14 can be easily positioned when fitted, and the first lead of the LED element 12 can be obtained. The frame 24 and the second lead frame 26 are not rattled in the notch 44, and the LED element 12 and the frame member 14 can be firmly fixed.

上記高熱伝導性絶縁接着材18としては、例えば、熱伝導性が良好な金属粉末を、シリコン樹脂、エポキシ樹脂、ポリイミド樹脂等の樹脂中に混合して成る高熱伝導性樹脂が該当する。
尚、高熱伝導性絶縁接着材18の厚さが大きいと、熱伝導性を阻害するため、１００μｍ以下の厚さとするのが適当であり、より好ましくは、上記の通り２０〜３０μｍの厚さとするのが良い。 The high thermal conductive insulating adhesive 18 corresponds to, for example, a high thermal conductive resin obtained by mixing a metal powder having good thermal conductivity in a resin such as a silicon resin, an epoxy resin, or a polyimide resin.
In addition, when the thickness of the high thermal conductive insulating adhesive 18 is large, the thermal conductivity is hindered. Therefore, the thickness is suitably 100 μm or less, and more preferably 20 to 30 μm as described above. Is good.

上記第１のＬＥＤランプ10は、第１のリードフレーム24及び第２のリードフレーム26を介してＬＥＤチップ28に電圧が印加されると、ＬＥＤチップ28から上記不織布34に担持された蛍光体33を励起する紫外線や青色可視光等の光が発光する。
ＬＥＤチップ28から発光された光の照射を蛍光体33が受けると、蛍光体33はＬＥＤチップ28の光を所定波長の可視光に変換して放射し、この可視光が、多数の透光性を有する繊維35が立体的に絡み合って形成された不織布34で拡散されて様々な方向へ放射され、中空外囲体32を透過して外部へ放射されるのである。 When a voltage is applied to the LED chip 28 via the first lead frame 24 and the second lead frame 26, the first LED lamp 10 has a phosphor 33 carried on the nonwoven fabric 34 from the LED chip 28. Light such as ultraviolet light and blue visible light that excites the light is emitted.
When the phosphor 33 receives the light emitted from the LED chip 28, the phosphor 33 converts the light emitted from the LED chip 28 into visible light having a predetermined wavelength and emits the visible light. Are diffused by a non-woven fabric 34 formed by three-dimensionally intertwining and radiated in various directions, and are transmitted through the hollow envelope 32 and radiated to the outside.

而して、本考案の第１のＬＥＤランプ10にあっては、ＬＥＤチップ28を覆う透光性の中空外囲体32の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体32の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第１のＬＥＤランプ10は、可視光の発光源である蛍光体33を、中空外囲体32の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体32の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。 Thus, in the first LED lamp 10 of the present invention, the non-woven fabric 34 carrying the phosphor 33 is disposed over the entire inner surface of the translucent hollow envelope 32 that covers the LED chip 28. The visible light wavelength-converted by the phosphor 33 is diffused by a large number of fibers 35 constituting the nonwoven fabric 34 and emitted from the entire surface of the hollow envelope 32 in various directions. An LED lamp with a wide viewing angle that can be viewed from the rear and rear directions can be realized.
Moreover, in the first LED lamp 10, the phosphor 33, which is a light source of visible light, is carried on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 32, so that the hollow envelope 32 from which visible light is emitted. A light emitting source exists in the vicinity of the surface of the LED, and an LED lamp with high luminous intensity is realized.

尚、上記第１のＬＥＤランプ10にあっては、ＬＥＤチップ28が配置された第１のリードフレーム24の先端部24ａが、高熱伝導性絶縁接着材18を介して放熱部材16と接続されているので、ＬＥＤチップ28の発熱は、第１のリードフレーム24及び高熱伝導性絶縁接着材18を介して放熱部材16へと伝導し、第１のＬＥＤランプ10外部へ効率良く放熱することができる。
しかも、上記ＬＥＤ素子12において、ＬＥＤチップ28が配置された第１のリードフレーム24の先端部24ａは、枠体底面22ａの略全面を覆う形状と成されているので、放熱面積を大きく確保することができ、放熱効果が高くなっている。上記第１のリードフレーム24は、熱伝導性が良好な導電材料である銅合金で構成することができる。 In the first LED lamp 10, the leading end 24 a of the first lead frame 24 on which the LED chip 28 is disposed is connected to the heat radiating member 16 through the high thermal conductive insulating adhesive 18. Therefore, the heat generated by the LED chip 28 is conducted to the heat radiating member 16 through the first lead frame 24 and the high thermal conductive insulating adhesive 18 and can be efficiently radiated to the outside of the first LED lamp 10. .
In addition, in the LED element 12, the tip 24a of the first lead frame 24 on which the LED chip 28 is disposed is formed to cover the substantially entire surface of the frame bottom surface 22a, so that a large heat radiation area is ensured. The heat dissipation effect is high. The first lead frame 24 can be made of a copper alloy, which is a conductive material having good thermal conductivity.

尚、放熱部材16の本体部底面36ｂを、他の放熱部材（図示省略）上に表面実装することにより、本体部底面36ｂを他の放熱部材に接触させれば、ＬＥＤチップ28の発熱を、放熱部材16を介して、更に他の放熱部材へと効率良く放熱することができる。 In addition, if the main body bottom surface 36b is brought into contact with another heat radiating member by surface mounting the main body bottom surface 36b of the heat radiating member 16 on another heat radiating member (not shown), Heat can be efficiently radiated to another heat radiating member via the heat radiating member 16.

上記した通り、絶縁材料で構成された枠部材14は、導電材料で構成された放熱部材16と、ＬＥＤ素子12の第１のリードフレーム24、第２のリードフレーム26との絶縁性を確保するために用いられるものである。
すなわち、ＬＥＤ素子12を枠部材14の垂下部42の段部46上に載置した際、ＬＥＤ素子12の第１のリードフレーム先端部24ａと放熱部材16間に２０〜３０μｍの間隙が形成されるので、ＬＥＤ素子12の第１のリードフレーム先端部24ａと放熱部材16との物理的な接触が阻止され絶縁性が確保される。 As described above, the frame member 14 made of an insulating material ensures insulation between the heat radiating member 16 made of a conductive material and the first lead frame 24 and the second lead frame 26 of the LED element 12. It is used for this purpose.
That is, when the LED element 12 is placed on the stepped portion 46 of the hanging part 42 of the frame member 14, a gap of 20 to 30 μm is formed between the first lead frame tip 24 a of the LED element 12 and the heat dissipation member 16. Therefore, physical contact between the first lead frame tip 24a of the LED element 12 and the heat radiating member 16 is prevented, and insulation is ensured.

而して、導電材料で構成された放熱部材16と、ＬＥＤ素子12の第１のリードフレーム24、第２のリードフレーム26との絶縁性を確保するのは、例えば、第１のＬＥＤランプ10を、他の導電性の放熱部材（図示省略）上に多数個配置して使用する場合等、複数個の第１のＬＥＤランプ10を同一の導電部材上に配置して使用する場合があるためである。 Thus, the insulation between the heat dissipation member 16 made of a conductive material and the first lead frame 24 and the second lead frame 26 of the LED element 12 can be ensured by, for example, the first LED lamp 10. In some cases, a plurality of first LED lamps 10 are arranged on the same conductive member, such as when many are arranged on another conductive heat radiating member (not shown). It is.

図１６は、本考案に係る第２のＬＥＤランプ48を示す概略断面図であり、該第２のＬＥＤランプ48は、中空外囲体50が略球状型と成されている点に特徴を有するものであり、その他の構成は上記第１のＬＥＤランプ10と実質的に同一である。
この第２のＬＥＤランプ48の略球状型の中空外囲体50は、その側周面が、ＬＥＤチップ28を囲繞する枠体22の外端から外方へ膨出している。 FIG. 16 is a schematic sectional view showing a second LED lamp 48 according to the present invention. The second LED lamp 48 is characterized in that the hollow envelope 50 is formed in a substantially spherical shape. The other configurations are substantially the same as those of the first LED lamp 10 described above.
The substantially spherical hollow envelope 50 of the second LED lamp 48 has its side peripheral surface bulging outward from the outer end of the frame 22 surrounding the LED chip 28.

而して、第２のＬＥＤランプ48にあっても、第１のＬＥＤランプ10と同じく、ＬＥＤチップ28を覆う透光性の中空外囲体50の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体50の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第２のＬＥＤランプ48は、可視光の発光源である蛍光体33を、中空外囲体50の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体50の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
また、第２のＬＥＤランプ48は、略球状型の中空外囲体50の側周面が、ＬＥＤチップ28を囲繞する枠体22の外端から外方へ膨出しているので、中空外囲体50から出射した後方向へ向かう光が枠体22に遮られることを抑制でき、後方向からの視認性が向上する。 Thus, even in the second LED lamp 48, as in the first LED lamp 10, the non-woven fabric carrying the phosphor 33 on the entire inner surface of the translucent hollow envelope 50 covering the LED chip 28. Since 34 is disposed, the visible light wavelength-converted by the phosphor 33 is diffused by a large number of fibers 35 constituting the nonwoven fabric 34 and emitted from the entire surface of the hollow envelope 50 in various directions. An LED lamp having a wide viewing angle that can be viewed not only in the front direction but also in the lateral direction and the rear direction can be realized.
In addition, since the second LED lamp 48 has the phosphor 33, which is a light source of visible light, supported on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 50, the hollow envelope 50 from which visible light is emitted. A light emitting source exists in the vicinity of the surface of the LED, and an LED lamp with high luminous intensity is realized.
Further, the second LED lamp 48 has a substantially spherical outer envelope 50 whose side peripheral surface bulges outward from the outer end of the frame 22 that surrounds the LED chip 28. The backward light emitted from the body 50 can be prevented from being blocked by the frame body 22, and the visibility from the rear direction is improved.

図１７は、本考案に係る第３のＬＥＤランプ52を示す概略断面図であり、該第３のＬＥＤランプは、ＬＥＤチップ搭載用の第１のリードフレーム54の先端部54ａに、その底面から上方に向かって孔径が徐々に拡大する略漏斗形状の凹部を設けると共に該凹部内面を反射面と成してリフレクタ56を形成し、該リフレクタ56の底面上にＬＥＤチップ28をダイボンドにより接続固定し、以て、上記第１のリードフレーム54と、ＬＥＤチップ28底面の一方の電極（図示せず）とを電気的に接続している。
また、第２のリードフレーム58の先端部58ａと、上記ＬＥＤチップ28上面の他方の電極（図示せず）とをボンディングワイヤ30を介して電気的に接続して成る。 FIG. 17 is a schematic cross-sectional view showing a third LED lamp 52 according to the present invention. The third LED lamp is formed on the front end portion 54a of the first lead frame 54 for mounting the LED chip from its bottom surface. A concave portion having a substantially funnel shape in which the hole diameter gradually increases toward the upper side is provided, and a reflector 56 is formed by forming the inner surface of the concave portion as a reflecting surface, and the LED chip 28 is connected and fixed on the bottom surface of the reflector 56 by die bonding. Thus, the first lead frame 54 and one electrode (not shown) on the bottom surface of the LED chip 28 are electrically connected.
Further, the leading end portion 58a of the second lead frame 58 and the other electrode (not shown) on the upper surface of the LED chip 28 are electrically connected through a bonding wire 30.

上記ＬＥＤチップ28、第１のリードフレーム54の先端部54ａ及び端子部54ｂの上端、第２のリードフレーム58の先端部58ａ及び端子部58ｂの上端は、先端に球面を有する砲弾型と成された透光性の中空外囲体60で覆われている。
また、上記中空外囲体60の内面全域に、蛍光体33を担持して成る上記不織布34が配置されている。
さらに、中空外囲体60の内部には、水ガラス、ゾルゲルガラス等の無機材料、或いは、エポキシ樹脂、アクリル樹脂等の有機材料で構成された透光性を有する充填材64が封入されている。
尚、第１のリードフレーム54の端子部54ｂの下端、第２のリードフレーム58の端子部58ｂの下端は、上記充填材64を貫通して中空外囲体60外部へ導出されている。 The LED chip 28, the upper end of the tip portion 54a and the terminal portion 54b of the first lead frame 54, and the upper end of the tip portion 58a and the terminal portion 58b of the second lead frame 58 are formed into a bullet shape having a spherical surface at the tip. It is covered with a translucent hollow envelope 60.
Further, the nonwoven fabric 34 carrying the phosphor 33 is disposed on the entire inner surface of the hollow envelope 60.
Further, inside the hollow envelope 60, a transparent material 64 made of an inorganic material such as water glass or sol-gel glass, or an organic material such as epoxy resin or acrylic resin is enclosed. .
The lower end of the terminal portion 54b of the first lead frame 54 and the lower end of the terminal portion 58b of the second lead frame 58 are led out of the hollow envelope 60 through the filler 64.

次に、図１８乃至図２１に基づいて、第３のＬＥＤランプ52の製造方法を説明する。
先ず、第１のリードフレーム54の先端部54ａに形成したリフレクタ56の底面上に、ＬＥＤチップ28をＡｇペースト等を介してダイボンドした後、ボンディングワイヤ30を介して第２のリードフレーム58の先端部58ａとＬＥＤチップ28とを接続する（図１８）。 Next, a method for manufacturing the third LED lamp 52 will be described with reference to FIGS.
First, the LED chip 28 is die-bonded via Ag paste or the like on the bottom surface of the reflector 56 formed at the distal end portion 54a of the first lead frame 54, and then the distal end of the second lead frame 58 via the bonding wire 30. The part 58a and the LED chip 28 are connected (FIG. 18).

次に、図１９に示すように、固定冶具66の凹部66ａ内に、上記中空外囲体60を、先端側から挿入していき、固定する。この結果、中空外囲体60の開口部が、上方側に配置されることとなる。尚、固定冶具66への固定前に、中空外囲体60の内面全域に予め不織布34を配置しておく。
次に、上記中空外囲体60の開口部から、中空外囲体60内に未硬化状態の充填材64を所定量注入する（図２０）。
次に、図２１に示すように、ＬＥＤチップ28が接続・配置された第１のリードフレーム54の先端部54ａ及び端子部54ｂの上端、第２のリードフレーム58の先端部58ａ及び端子部58ｂの上端を、中空外囲体60内に収容する。
その後、所定温度で加熱する等して、上記充填材64を硬化させることにより、上記第３のＬＥＤランプ52が完成する。 Next, as shown in FIG. 19, the hollow envelope 60 is inserted into the recess 66 a of the fixing jig 66 from the distal end side and fixed. As a result, the opening of the hollow envelope 60 is arranged on the upper side. Prior to fixing to the fixing jig 66, the nonwoven fabric 34 is disposed in advance over the entire inner surface of the hollow envelope 60.
Next, a predetermined amount of uncured filler 64 is injected into the hollow envelope 60 from the opening of the hollow envelope 60 (FIG. 20).
Next, as shown in FIG. 21, the leading end portion 54a and the terminal portion 54b of the first lead frame 54 to which the LED chip 28 is connected and arranged, the leading end portion 58a and the terminal portion 58b of the second lead frame 58, and the like. Is accommodated in the hollow envelope 60.
Thereafter, the third LED lamp 52 is completed by curing the filler 64 by heating at a predetermined temperature.

上記第３のＬＥＤランプ52は、第１のリードフレーム54及び第２のリードフレーム58を介してＬＥＤチップ28に電圧が印加されると、ＬＥＤチップ28から上記不織布34に担持された蛍光体33を励起する紫外線や青色可視光等の光が発光する。
ＬＥＤチップ28から発光された光の照射を蛍光体33が受けると、蛍光体33はＬＥＤチップ28の光を所定波長の可視光に変換して放射し、この可視光が、多数の透光性を有する繊維35が立体的に絡み合って形成された不織布34で拡散されて様々な方向へ放射され、中空外囲体60を透過して外部へ放射されるのである。 When a voltage is applied to the LED chip 28 via the first lead frame 54 and the second lead frame 58, the third LED lamp 52 has a phosphor 33 carried on the nonwoven fabric 34 from the LED chip 28. Light such as ultraviolet light and blue visible light that excites the light is emitted.
When the phosphor 33 receives the light emitted from the LED chip 28, the phosphor 33 converts the light emitted from the LED chip 28 into visible light having a predetermined wavelength and emits the visible light. Is diffused by the nonwoven fabric 34 formed in a three-dimensionally intertwined manner and radiated in various directions, and is transmitted through the hollow envelope 60 and radiated to the outside.

而して、本考案の第３のＬＥＤランプ52も、第１のＬＥＤランプ10及び第２のＬＥＤランプ48と同じく、ＬＥＤチップ28を覆う透光性の中空外囲体60の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体60の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第３のＬＥＤランプ52は、可視光の発光源である蛍光体33を、中空外囲体60の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体60の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。 Thus, the third LED lamp 52 of the present invention is also applied to the entire inner surface of the translucent hollow envelope 60 covering the LED chip 28, like the first LED lamp 10 and the second LED lamp 48. Since the non-woven fabric 34 carrying the phosphor 33 is arranged, visible light wavelength-converted by the phosphor 33 is diffused by the numerous fibers 35 constituting the non-woven fabric 34, and various directions from the entire surface of the hollow envelope 60 Thus, an LED lamp with a wide viewing angle that can be viewed not only from the front direction but also from the side direction and the rear direction can be realized.
Moreover, the third LED lamp 52 has the phosphor 33, which is a visible light emission source, supported on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 60, so that the hollow envelope 60 from which visible light is emitted. A light emitting source exists in the vicinity of the surface of the LED, and an LED lamp with high luminous intensity is realized.

尚、上記充填材64を水ガラス、ゾルゲルガラス等の無機材料で構成した場合には、無機材料はＬＥＤチップ28から発光される青色可視光等の高エネルギーの短波長光を殆ど吸収しないため、短波長光が充填材64によって損失することを抑制できる。 When the filler 64 is made of an inorganic material such as water glass or sol-gel glass, the inorganic material hardly absorbs high energy short wavelength light such as blue visible light emitted from the LED chip 28. Loss of short wavelength light by the filler 64 can be suppressed.

尚、ＬＥＤランプは、主として前方向の対象物に対して光を照射するものとして用いられることが多いため、広視野角な場合であっても、側方向や後方向に比べて前方向の光度の高いものが求められることも多い。
そこで、図２２〜図２７に示す本考案の第４のＬＥＤランプ76〜第９のＬＥＤランプ96は、広視野角であると共に光度が高く、尚且つ、側方向や後方向に比べて前方向の光度を高めたＬＥＤランプを実現するものである。 Since LED lamps are often used mainly for irradiating light to an object in the forward direction, the luminous intensity in the forward direction compared to the lateral direction and the backward direction is even in the case of a wide viewing angle. Often there is a need for a high value.
Therefore, the fourth LED lamp 76 to the ninth LED lamp 96 of the present invention shown in FIGS. 22 to 27 have a wide viewing angle and a high luminous intensity, and are forward as compared to the lateral direction and the backward direction. The LED lamp which raised the luminous intensity of this is implement | achieved.

図２２は、本考案に係る第４のＬＥＤランプ76を示す概略断面図であり、該第４のＬＥＤランプ76は、中空外囲体32の先端に凸レンズ部78が形成されている点に特徴を有するものであり、その他の構成は上記第１のＬＥＤランプ10と実質的に同一である。
上記凸レンズ部78は、中空外囲体32の先端の肉厚を最大とすると共に、先端から周縁に向かって漸次薄肉となる球面状と成すことによって形成されている。 FIG. 22 is a schematic sectional view showing a fourth LED lamp 76 according to the present invention. The fourth LED lamp 76 is characterized in that a convex lens portion 78 is formed at the tip of the hollow envelope 32. The other configurations are substantially the same as those of the first LED lamp 10.
The convex lens portion 78 is formed by maximizing the thickness of the tip of the hollow envelope 32 and forming a spherical surface that gradually becomes thinner from the tip toward the periphery.

而して、本考案の第４のＬＥＤランプ76にあっては、ＬＥＤチップ28を覆う透光性の中空外囲体32の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体32の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第４のＬＥＤランプ76は、可視光の発光源である蛍光体33を、中空外囲体32の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体32の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、第４のＬＥＤランプ76は、ＬＥＤチップ28を覆う中空外囲体32の先端に凸レンズ部78を形成したことから、中空外囲体32先端方向へ向かう光が、上記凸レンズ部78で集光されて前方向へ出射されるので、広視野角でありながら側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Thus, in the fourth LED lamp 76 of the present invention, the non-woven fabric 34 carrying the phosphor 33 is disposed over the entire inner surface of the translucent hollow envelope 32 that covers the LED chip 28. The visible light wavelength-converted by the phosphor 33 is diffused by a large number of fibers 35 constituting the nonwoven fabric 34 and emitted from the entire surface of the hollow envelope 32 in various directions. An LED lamp with a wide viewing angle that can be viewed from the rear and rear directions can be realized.
In addition, the fourth LED lamp 76 has the phosphor 33, which is a light source of visible light, carried on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 32, so that the hollow envelope 32 from which visible light is emitted. A light emitting source exists in the vicinity of the surface of the LED, and an LED lamp with high luminous intensity is realized.
Furthermore, since the fourth LED lamp 76 has the convex lens portion 78 formed at the tip of the hollow envelope 32 that covers the LED chip 28, the light toward the tip of the hollow envelope 32 is collected by the convex lens portion 78. Since the light is emitted and emitted in the forward direction, an LED lamp having a high luminous intensity in the forward direction compared with the lateral direction and the backward direction can be realized while having a wide viewing angle.

図２３は、本考案に係る第５のＬＥＤランプ80を示す概略断面図であり、該第５のＬＥＤランプ80は、中空外囲体50の先端に凸レンズ部82が形成されている点に特徴を有するものであり、その他の構成は上記第２のＬＥＤランプ48と実質的に同一である。
上記凸レンズ部82は、中空外囲体50の先端の肉厚を最大とすると共に、先端から周縁に向かって漸次薄肉となる球面状と成すことによって形成されている。 FIG. 23 is a schematic sectional view showing a fifth LED lamp 80 according to the present invention. The fifth LED lamp 80 is characterized in that a convex lens portion 82 is formed at the tip of the hollow envelope 50. The other configurations are substantially the same as those of the second LED lamp 48.
The convex lens portion 82 is formed by maximizing the thickness of the tip of the hollow envelope 50 and forming a spherical surface that gradually becomes thinner from the tip toward the periphery.

而して、本考案の第５のＬＥＤランプ80にあっては、ＬＥＤチップ28を覆う透光性の中空外囲体50の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体50の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第５のＬＥＤランプ80は、可視光の発光源である蛍光体33を、中空外囲体50の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体50の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、第５のＬＥＤランプ80は、ＬＥＤチップ28を覆う中空外囲体50の先端に凸レンズ部82を形成したことから、中空外囲体50先端方向へ向かう光が、上記凸レンズ部82で集光されて前方向へ出射されるので、広視野角でありながら側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Thus, in the fifth LED lamp 80 of the present invention, the non-woven fabric 34 carrying the phosphor 33 is disposed over the entire inner surface of the translucent hollow envelope 50 that covers the LED chip 28. The visible light wavelength-converted by the phosphor 33 is diffused by the numerous fibers 35 constituting the nonwoven fabric 34 and emitted from the entire surface of the hollow envelope 50 in various directions. An LED lamp with a wide viewing angle that can be viewed from the rear and rear directions can be realized.
Moreover, in the fifth LED lamp 80, the phosphor 33, which is a visible light emission source, is carried on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 50, so that the hollow envelope 50 from which visible light is emitted. A light emitting source exists in the vicinity of the surface of the LED, and an LED lamp with high luminous intensity is realized.
Further, since the fifth LED lamp 80 has the convex lens portion 82 formed at the tip of the hollow envelope 50 that covers the LED chip 28, the light toward the tip of the hollow envelope 50 is collected by the convex lens portion 82. Since the light is emitted and emitted in the forward direction, an LED lamp having a high luminous intensity in the forward direction compared with the lateral direction and the backward direction can be realized while having a wide viewing angle.

図２４は、本考案に係る第６のＬＥＤランプ84を示す概略断面図であり、該第６のＬＥＤランプ84は、中空外囲体60の先端に凸レンズ部86が形成されている点に特徴を有するものであり、その他の構成は上記第３のＬＥＤランプ52と実質的に同一である。 FIG. 24 is a schematic sectional view showing a sixth LED lamp 84 according to the present invention, and the sixth LED lamp 84 is characterized in that a convex lens portion 86 is formed at the tip of the hollow envelope 60. The other configurations are substantially the same as those of the third LED lamp 52.

而して、本考案の第６のＬＥＤランプ84にあっては、ＬＥＤチップ28を覆う透光性の中空外囲体60の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体60の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第６のＬＥＤランプ84は、可視光の発光源である蛍光体33を、中空外囲体60の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体60の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、第６のＬＥＤランプ84は、ＬＥＤチップ28を覆う中空外囲体60の先端に凸レンズ部86を形成したことから、中空外囲体60先端方向へ向かう光が、上記凸レンズ部86で集光されて前方向へ出射されるので、広視野角でありながら側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Thus, in the sixth LED lamp 84 of the present invention, the non-woven fabric 34 carrying the phosphor 33 is disposed over the entire inner surface of the translucent hollow envelope 60 that covers the LED chip 28. The visible light wavelength-converted by the phosphor 33 is diffused by the numerous fibers 35 constituting the non-woven fabric 34 and emitted from the entire surface of the hollow envelope 60 in various directions. An LED lamp with a wide viewing angle that can be viewed from the rear and rear directions can be realized.
In addition, the sixth LED lamp 84 supports the phosphor 33, which is a visible light emission source, on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 60, so that the hollow envelope 60 from which visible light is emitted. A light emitting source exists in the vicinity of the surface of the LED, and an LED lamp with high luminous intensity is realized.
Furthermore, since the sixth LED lamp 84 has the convex lens portion 86 formed at the tip of the hollow envelope 60 covering the LED chip 28, the light directed toward the tip of the hollow envelope 60 is collected by the convex lens portion 86. Since the light is emitted and emitted in the forward direction, an LED lamp having a high luminous intensity in the forward direction compared with the lateral direction and the backward direction can be realized while having a wide viewing angle.

図２５は、本考案に係る第７のＬＥＤランプ88を示す概略断面図であり、該第７のＬＥＤランプ88は、中空外囲体32の先端内面に透光材91を接合して凸レンズ部90を形成すると共に、上記透光材91が接合された部分以外の中空外囲体32の内面全域及び透光材91の内面全域に上記不織布34を配置した点に特徴を有するものであり、その他の構成は上記第１のＬＥＤランプ10と実質的に同一である。 FIG. 25 is a schematic cross-sectional view showing a seventh LED lamp 88 according to the present invention. The seventh LED lamp 88 is formed by bonding a translucent material 91 to the inner surface of the distal end of the hollow envelope 32 and forming a convex lens portion. 90 is characterized in that the nonwoven fabric 34 is disposed over the entire inner surface of the hollow envelope 32 and the entire inner surface of the translucent material 91 other than the portion to which the translucent material 91 is joined, Other configurations are substantially the same as those of the first LED lamp 10.

上記凸レンズ部90は、中空外囲体32先端位置の透光材91の肉厚を最大とすると共に、中空外囲体32の先端位置から周縁位置に向かって透光材91が漸次薄肉となる球面状と成すことによって形成されている。
尚、凸レンズ部90を構成する上記透光材91は、中空外囲体32の先端を下側に配置した状態で、透光性を有する無機結合剤等の液状の透光材91を中空外囲体32内に所定量充填した後、固化させることにより形成できる。 The convex lens portion 90 maximizes the thickness of the translucent material 91 at the distal end position of the hollow envelope 32, and the translucent material 91 gradually becomes thinner from the distal end position of the hollow envelope 32 toward the peripheral position. It is formed by forming a spherical shape.
Note that the translucent material 91 constituting the convex lens portion 90 is a liquid translucent material 91 such as an inorganic binder having translucency in a state where the distal end of the hollow envelope 32 is disposed on the lower side. It can be formed by filling the enclosure 32 with a predetermined amount and solidifying it.

而して、本考案の第７のＬＥＤランプ88にあっては、透光材91が接合された部分以外の中空外囲体32の内面全域及び透光材91の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体32の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第７のＬＥＤランプ88は、可視光の発光源である蛍光体33を、中空外囲体32の内面及び凸レンズ部90を構成する透光材91の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体32の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、第７のＬＥＤランプ88は、ＬＥＤチップ28を覆う中空外囲体32の先端に凸レンズ部90を形成したことから、中空外囲体32先端方向へ向かう光が、上記凸レンズ部90で集光されて前方向へ出射されるので、広視野角でありながら側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Thus, in the seventh LED lamp 88 of the present invention, the phosphor 33 is provided over the entire inner surface of the hollow envelope 32 and the entire inner surface of the translucent material 91 other than the portion where the translucent material 91 is joined. Since the non-woven fabric 34 supporting the non-woven fabric 34 is disposed, the visible light wavelength-converted by the phosphor 33 is diffused by the numerous fibers 35 constituting the non-woven fabric 34 and emitted from the entire surface of the hollow envelope 32 in various directions. Thus, an LED lamp with a wide viewing angle that can be viewed not only from the front direction but also from the side direction and the rear direction can be realized.
In addition, the seventh LED lamp 88 carries the phosphor 33, which is a visible light source, on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 32 and the inner surface of the translucent material 91 constituting the convex lens portion 90. Therefore, a light emission source exists in the vicinity of the surface of the hollow envelope 32 from which visible light is emitted, and an LED lamp with high luminous intensity is realized.
Further, since the seventh LED lamp 88 has the convex lens portion 90 formed at the tip of the hollow envelope 32 covering the LED chip 28, the light toward the tip of the hollow envelope 32 is collected by the convex lens portion 90. Since the light is emitted and emitted in the forward direction, an LED lamp having a high luminous intensity in the forward direction compared with the lateral direction and the backward direction can be realized while having a wide viewing angle.

図２６は、本考案に係る第８のＬＥＤランプ92を示す概略断面図であり、該第８のＬＥＤランプ92は、中空外囲体50の先端内面に透光材95を接合して凸レンズ部94を形成すると共に、上記透光材95が接合された部分以外の中空外囲体50の内面全域及び透光材95の内面全域に上記不織布34を配置した点に特徴を有するものであり、その他の構成は上記第２のＬＥＤランプ48と実質的に同一である。 FIG. 26 is a schematic cross-sectional view showing an eighth LED lamp 92 according to the present invention. The eighth LED lamp 92 is formed by bonding a translucent material 95 to the inner surface of the front end of the hollow envelope 50 and forming a convex lens portion. 94 is characterized in that the nonwoven fabric 34 is disposed over the entire inner surface of the hollow envelope 50 and the entire inner surface of the translucent material 95 other than the portion to which the translucent material 95 is joined, Other configurations are substantially the same as those of the second LED lamp 48.

而して、本考案の第８のＬＥＤランプ92にあっては、透光材95が接合された部分以外の中空外囲体50の内面全域及び透光材95の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体50の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第８のＬＥＤランプ92は、可視光の発光源である蛍光体33を、中空外囲体50の内面及び凸レンズ部90を構成する透光材91の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体50の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、第８のＬＥＤランプ92は、ＬＥＤチップ28を覆う中空外囲体50の先端に凸レンズ部94を形成したことから、中空外囲体50先端方向へ向かう光が、上記凸レンズ部94で集光されて前方向へ出射されるので、広視野角でありながら側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Thus, in the eighth LED lamp 92 of the present invention, the phosphor 33 is disposed on the entire inner surface of the hollow envelope 50 and on the entire inner surface of the translucent material 95 other than the portion to which the translucent material 95 is joined. Since the non-woven fabric 34 supporting the non-woven fabric 34 is disposed, the visible light wavelength-converted by the phosphor 33 is diffused by the numerous fibers 35 constituting the non-woven fabric 34 and emitted from the entire surface of the hollow envelope 50 in various directions. Thus, an LED lamp with a wide viewing angle that can be viewed not only from the front direction but also from the side direction and the rear direction can be realized.
Moreover, the eighth LED lamp 92 carries the phosphor 33, which is a visible light source, on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 50 and the inner surface of the translucent material 91 constituting the convex lens portion 90. Therefore, a light emission source exists near the surface of the hollow envelope 50 from which visible light is emitted, and an LED lamp with high luminous intensity is realized.
Further, since the eighth LED lamp 92 has the convex lens portion 94 formed at the tip of the hollow envelope 50 covering the LED chip 28, the light directed toward the tip of the hollow envelope 50 is collected by the convex lens portion 94. Since the light is emitted and emitted in the forward direction, an LED lamp having a high luminous intensity in the forward direction compared with the lateral direction and the backward direction can be realized while having a wide viewing angle.

図２７は、本考案に係る第９のＬＥＤランプ96を示す概略断面図であり、該第９のＬＥＤランプ96は、中空外囲体60の先端内面に透光材99を接合して凸レンズ部98を形成すると共に、上記透光材99が接合された部分以外の中空外囲体60の内面全域及び透光材99の内面全域に上記不織布34を配置した点に特徴を有するものであり、その他の構成は上記第３のＬＥＤランプ52と実質的に同一である。 FIG. 27 is a schematic cross-sectional view showing a ninth LED lamp 96 according to the present invention. The ninth LED lamp 96 is formed by bonding a translucent material 99 to the inner surface of the distal end of the hollow envelope 60 and forming a convex lens portion. 98 is characterized in that the nonwoven fabric 34 is disposed over the entire inner surface of the hollow envelope 60 and the entire inner surface of the translucent material 99 other than the portion where the translucent material 99 is joined, Other configurations are substantially the same as those of the third LED lamp 52.

而して、本考案の第９のＬＥＤランプ96にあっては、透光材99が接合された部分以外の中空外囲体60の内面全域及び透光材99の内面全域に、蛍光体33を担持した不織布34を配置したので、蛍光体33で波長変換された可視光が上記不織布34を構成する多数の繊維35で拡散されて中空外囲体60の表面全域から様々な方向へ出射されることとなり、前方向だけでなく側方向や後方向からも視認できる広視野角なＬＥＤランプを実現できる。
しかも、第９のＬＥＤランプ96は、可視光の発光源である蛍光体33を、中空外囲体60の内面及び凸レンズ部90を構成する透光材91の内面に配置した不織布34に担持させたので、可視光が出射する中空外囲体60の表面近傍に発光源が存在することになり、光度の高いＬＥＤランプが実現される。
さらに、第９のＬＥＤランプ96は、ＬＥＤチップ28を覆う中空外囲体60の先端に凸レンズ部98を形成したことから、中空外囲体60先端方向へ向かう光が、上記凸レンズ部98で集光されて前方向へ出射されるので、広視野角でありながら側方向や後方向に比べて前方向の光度の高いＬＥＤランプが実現できる。 Thus, in the ninth LED lamp 96 of the present invention, the phosphor 33 is formed on the entire inner surface of the hollow envelope 60 and the entire inner surface of the translucent material 99 other than the portion where the translucent material 99 is joined. Since the non-woven fabric 34 supporting the non-woven fabric 34 is disposed, the visible light wavelength-converted by the phosphor 33 is diffused by the numerous fibers 35 constituting the non-woven fabric 34 and emitted from the entire surface of the hollow envelope 60 in various directions. Thus, an LED lamp with a wide viewing angle that can be viewed not only from the front direction but also from the side direction and the rear direction can be realized.
Moreover, the ninth LED lamp 96 carries the phosphor 33, which is a visible light source, on the nonwoven fabric 34 disposed on the inner surface of the hollow envelope 60 and the inner surface of the translucent material 91 constituting the convex lens portion 90. Therefore, a light emission source exists near the surface of the hollow envelope 60 from which visible light is emitted, and an LED lamp with high luminous intensity is realized.
Further, since the ninth LED lamp 96 has the convex lens portion 98 formed at the tip of the hollow envelope 60 covering the LED chip 28, the light directed toward the tip of the hollow envelope 60 is collected by the convex lens portion 98. Since the light is emitted and emitted in the forward direction, an LED lamp having a high luminous intensity in the forward direction compared with the lateral direction and the backward direction can be realized while having a wide viewing angle.

本考案に係る第１のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 1st LED lamp which concerns on this invention. 本考案に係る第１のＬＥＤランプの中空外囲体を取り外した状態における平面図である。It is a top view in the state where the hollow envelope of the 1st LED lamp concerning the present invention was removed. 本考案に係る第１のＬＥＤランプのＬＥＤ素子を模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the LED element of the 1st LED lamp which concerns on this invention. 本考案に係る第１のＬＥＤランプのＬＥＤ素子の中空外囲体を取り外した状態における平面図である。It is a top view in the state where the hollow envelope of the LED element of the 1st LED lamp concerning the present invention was removed. 蛍光体を担持した不織布を模式的に示す部分拡大図である。It is the elements on larger scale which show typically the nonwoven fabric which carry | supported fluorescent substance. 不織布を構成する繊維を模式的に示す拡大図である。It is an enlarged view which shows typically the fiber which comprises a nonwoven fabric. 不織布を構成する繊維を模式的に示す断面図である。It is sectional drawing which shows typically the fiber which comprises a nonwoven fabric. 本考案に係る第１のＬＥＤランプの放熱部材を模式的に示す正面図である。It is a front view which shows typically the heat dissipation member of the 1st LED lamp which concerns on this invention. 本考案に係る第１のＬＥＤランプの放熱部材を模式的に示す平面図である。It is a top view which shows typically the heat radiating member of the 1st LED lamp which concerns on this invention. 本考案に係る第１のＬＥＤランプの放熱部材を模式的に示す側面図である。It is a side view which shows typically the heat radiating member of the 1st LED lamp which concerns on this invention. 図９のＢ−Ｂ概略断面図である。It is BB schematic sectional drawing of FIG. 本考案に係る第１のＬＥＤランプの枠部材を模式的に示す平面図である。It is a top view which shows typically the frame member of the 1st LED lamp which concerns on this invention. 本考案に係る第１のＬＥＤランプの枠部材を模式的に示す側面図である。It is a side view which shows typically the frame member of the 1st LED lamp which concerns on this invention. 図１２のＣ−Ｃ概略断面図である。It is CC schematic sectional drawing of FIG. 本考案に係る第１のＬＥＤランプのＬＥＤ素子、枠部材、放熱部材の一体化の方法を示す説明図である。It is explanatory drawing which shows the integration method of the LED element of the 1st LED lamp which concerns on this invention, a frame member, and a heat radiating member. 本考案に係る第２のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 2nd LED lamp which concerns on this invention. 本考案に係る第３のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 3rd LED lamp which concerns on this invention. 本考案に係る第３のＬＥＤランプの製造過程を示す説明図である。It is explanatory drawing which shows the manufacture process of the 3rd LED lamp which concerns on this invention. 本考案に係る第３のＬＥＤランプの製造過程を示す説明図である。It is explanatory drawing which shows the manufacture process of the 3rd LED lamp which concerns on this invention. 本考案に係る第３のＬＥＤランプの製造過程を示す説明図である。It is explanatory drawing which shows the manufacture process of the 3rd LED lamp which concerns on this invention. 本考案に係る第３のＬＥＤランプの製造過程を示す説明図である。It is explanatory drawing which shows the manufacture process of the 3rd LED lamp which concerns on this invention. 本考案に係る第４のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 4th LED lamp which concerns on this invention. 本考案に係る第５のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 5th LED lamp which concerns on this invention. 本考案に係る第６のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 6th LED lamp which concerns on this invention. 本考案に係る第７のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 7th LED lamp which concerns on this invention. 本考案に係る第８のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 8th LED lamp which concerns on this invention. 本考案に係る第９のＬＥＤランプを模式的に示す概略断面図である。It is a schematic sectional drawing which shows typically the 9th LED lamp which concerns on this invention.

10 第１のＬＥＤランプ
12 ＬＥＤ素子
14 枠部材
16 放熱部材
18 高熱伝導性絶縁接着材
20 孔
22 枠体
24 第１のリードフレーム
24ａ第１のリードフレームの先端部
24ｂ第１のリードフレームの後端部
26 第２のリードフレーム
26ａ第２のリードフレームの先端部
26ｂ第２のリードフレームの後端部
28 ＬＥＤチップ
30 ボンディングワイヤ
32 中空外囲体
33 蛍光体
34 不織布
35 繊維
37 空隙
36 放熱部材の本体部
36ａ本体部の側周面
36ｂ本体部の底面
38 放熱部材の切欠部
40 枠部材の本体部
42 枠部材の垂下部
44 枠部材の切欠部
46 枠部材の段部
48 第２のＬＥＤランプ
50 中空外囲体
52 第３のＬＥＤランプ
54 第１のリードフレーム
54ａ第１のリードフレームの先端部
54ｂ第１のリードフレームの端子部
56 リフレクタ
58 第２のリードフレーム
58ａ第２のリードフレームの先端部
58ｂ第２のリードフレームの端子部
60 中空外囲体
64 充填材
66 固定冶具
66ａ固定冶具の凹部
76 第４のＬＥＤランプ
78 凸レンズ部
80 第５のＬＥＤランプ
82 凸レンズ部
84 第６のＬＥＤランプ
86 凸レンズ部
88 第７のＬＥＤランプ
90 凸レンズ部
91 透光材
92 第８のＬＥＤランプ
94 凸レンズ部
95 透光材
96 第９のＬＥＤランプ
98 凸レンズ部
99 透光材 10 First LED lamp
12 LED elements
14 Frame member
16 Heat dissipation member
18 High thermal conductivity insulating adhesive
20 holes
22 Frame
24 First lead frame
24a First lead frame tip
24b Rear end of first lead frame
26 Second lead frame
26a Tip of second lead frame
26b Rear end of second lead frame
28 LED chip
30 Bonding wire
32 Hollow enclosure
33 Phosphor
34 Nonwoven fabric
35 fibers
37 Air gap
36 Heat sink body
Side surface of 36a body
Bottom of 36b body
38 Notch in heat dissipation member
40 Frame body
42 Hanging part of frame member
44 Notch in frame member
46 Step of frame member
48 Second LED lamp
50 Hollow enclosure
52 Third LED lamp
54 First lead frame
54a First lead frame tip
54b Terminal part of the first lead frame
56 Reflector
58 Second lead frame
58a Tip of second lead frame
58b Terminal area of second lead frame
60 Hollow enclosure
64 Filler
66 Fixing jig
Recess of 66a fixing jig
76 Fourth LED lamp
78 Convex lens
80 Fifth LED lamp
82 Convex lens
84 Sixth LED lamp
86 Convex lens
88 7th LED lamp
90 Convex lens
91 Translucent material
92 Eighth LED lamp
94 Convex lens
95 Translucent material
96 9th LED lamp
98 Convex lens
99 Translucent material

Claims

An LED lamp comprising an LED chip and a light-transmitting hollow envelope covering the LED chip, wherein a large number of light-transmitting fibers are entangled three-dimensionally over the entire inner surface of the hollow envelope. An LED lamp comprising: a formed non-woven fabric, and a phosphor that converts the emitted light of the LED chip into visible light having a predetermined wavelength and supports the non-woven fabric.

An LED lamp comprising an LED chip and a light-transmitting hollow envelope covering the LED chip, wherein a convex lens portion is formed at a tip of the hollow envelope, and the entire inner surface of the hollow envelope is formed. , A non-woven fabric formed by three-dimensionally entwining a large number of translucent fibers is disposed, and the non-woven fabric carries a phosphor that converts the emitted light of the LED chip into visible light having a predetermined wavelength and emits the phosphor. An LED lamp characterized by that.

The convex lens portion is formed by maximizing the thickness of the tip of the hollow envelope and forming a spherical shape that gradually becomes thinner from the tip toward the periphery. LED lamp.

An LED lamp comprising an LED chip and a translucent hollow envelope covering the LED chip, and a convex lens portion is formed by bonding a translucent material to the inner surface of the tip of the hollow envelope, A non-woven fabric formed by three-dimensionally intertwining fibers having a large number of translucency is disposed over the entire inner surface of the hollow envelope other than the portion where the translucent material is joined and the entire inner surface of the translucent material, and An LED lamp characterized in that the non-woven fabric is loaded with a phosphor that converts the emitted light of the LED chip into visible light having a predetermined wavelength and emits it.

The LED lamp according to any one of claims 1 to 4, wherein the LED chip is surrounded by a frame body, and a dome-shaped hollow outer body covering the LED chip is disposed on the frame body.

The LED chip is surrounded by a frame, and a substantially spherical hollow envelope that covers the LED chip and bulges outward from the outer end of the frame is disposed on the frame. The LED lamp according to any one of claims 1 to 4, wherein the LED lamp is formed.

5. The LED according to claim 1, wherein the LED chip is covered with a bullet-shaped hollow envelope and a light-transmitting filler is enclosed in the hollow envelope. lamp.