JP2008091140A - Led bulb and lighting equipment - Google Patents

Led bulb and lighting equipment Download PDF

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JP2008091140A
JP2008091140A JP2006269161A JP2006269161A JP2008091140A JP 2008091140 A JP2008091140 A JP 2008091140A JP 2006269161 A JP2006269161 A JP 2006269161A JP 2006269161 A JP2006269161 A JP 2006269161A JP 2008091140 A JP2008091140 A JP 2008091140A
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globe
cover
light
light emitting
lighting
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Kazuto Morikawa
和人 森川
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Toshiba Lighting & Technology Corp
東芝ライテック株式会社
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21KNON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20Light sources comprising attachment means
    • F21K9/23Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/02Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
    • F21S8/026Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/04Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED bulb capable of easily obtaining approximately uniform luminance and lighting equipment having the LED bulb. <P>SOLUTION: The LED bulb 1 comprises light emitting diodes 2 mounted on a board 7, a lighting device 3 for lighting the light emitting diodes 2, a cover 4 for housing the lighting device 3 and having a base 10 on one end of the cover and the board 7 on the other end, a translucent globe 5 mounted on the other end of the cover 4 to cover the light emitting diodes 2, and a diffusion sheet 6 for coating approximately the whole outer surface of the globe 5 with its rim clamped between the cover 4 and the rim 5a of the globe 5. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ランプソケットに装着されるLED電球およびこのLED電球を具備する照明器具に関する。   The present invention relates to an LED bulb mounted on a lamp socket and a lighting fixture including the LED bulb.
点光源を有する電球は、その点光源の高い輝度が人に不快感を及ぼさないようにガラスバルブ(グローブ)に例えば拡散膜を形成している。また、落下等におけるガラス破片の飛散防止用膜を形成することも行われている(例えば特許文献1参照。)。しかし、光源として発光ダイオード(LED)を具備する電球(LED電球)は、発光ダイオードの放射光の放射方向における強度や放射光のガラスバルブへの入射位置などが発光ダイオードの品種により異なり、当該品種に応じて柔軟にガラスバルブに均一な光拡散を形成することが困難であった。   In a light bulb having a point light source, for example, a diffusion film is formed on a glass bulb (glove) so that the high luminance of the point light source does not cause discomfort to humans. In addition, a film for preventing scattering of glass fragments during dropping or the like is also formed (see, for example, Patent Document 1). However, a light bulb (LED light bulb) having a light-emitting diode (LED) as a light source differs depending on the type of the light-emitting diode, such as the intensity of the light-emitting diode in the radiation direction and the incident position of the emitted light on the glass bulb. Accordingly, it has been difficult to form a uniform light diffusion on the glass bulb flexibly.
そして、LED電球の輝度をほぼ均一にできるものとして、発光ダイオードからの放射光を波長変換しているLED電球が提案されている(例えば特許文献2参照。)。この従来技術のLED電球は、発光ダイオードが配設される面から所定の距離隔てた位置に発光ダイオードと対向する扁平な曲面部を有し、発光ダイオードからの放射光を波長変換する蛍光体を曲面部に設けた波長変換カバーを備えており、波長変換カバーから広い角度範囲に光を出力することができ、波長変換カバー全体がほぼ均一な輝度の白色光を発するというものである。したがって、グローブからもほぼ均一な輝度の白色光が出射される。
特開2004−127687号公報(第3頁、図2) 特開2006−156187号公報(第9−10頁、図12−図13)
And the LED light bulb which wavelength-converted the emitted light from a light emitting diode as what can make the brightness | luminance of an LED light bulb substantially uniform is proposed (for example, refer patent document 2). This prior art LED bulb has a flat curved portion facing the light emitting diode at a predetermined distance from the surface where the light emitting diode is disposed, and a phosphor that converts the wavelength of the emitted light from the light emitting diode. A wavelength conversion cover provided on the curved surface portion is provided, and light can be output in a wide angle range from the wavelength conversion cover, and the entire wavelength conversion cover emits white light with substantially uniform luminance. Therefore, white light with substantially uniform brightness is emitted from the globe.
Japanese Patent Laying-Open No. 2004-127687 (page 3, FIG. 2) JP 2006-156187 A (page 9-10, FIGS. 12-13)
特許文献2のLED電球は、蛍光体を設けた波長変換カバーを発光ダイオードの前方側に具備しているので、グローブ内の構成が複雑となって製造コストがアップし、また、波長変換カバー自体も高価になるという欠点を有する。   Since the LED light bulb of Patent Document 2 includes a wavelength conversion cover provided with a phosphor on the front side of the light emitting diode, the configuration in the globe is complicated, and the manufacturing cost is increased, and the wavelength conversion cover itself Also has the disadvantage of becoming expensive.
本発明は、簡素に略均一な輝度が得られるLED電球およびこのLED電球を具備する照明器具を提供することを目的とする。   An object of the present invention is to provide an LED bulb that can obtain a substantially uniform luminance simply and a lighting fixture including the LED bulb.
請求項1に記載のLED電球の発明は、基板に実装された発光ダイオードと;この発光ダイオードを点灯させる点灯装置と;この点灯装置が収容され、一方側に口金を装着し、他方側に前記基板を取り付けているカバーと;前記発光ダイオードを覆うように前記カバーの他方側に取り付けられた透光性のグローブと;このグローブの外表面の略全域に被着され、端縁部がカバーとグローブ端部との間で挟持された拡散シートと;を具備していることを特徴とする。   The invention of the LED bulb according to claim 1 includes: a light emitting diode mounted on a substrate; a lighting device for lighting the light emitting diode; and the lighting device is housed, and a base is mounted on one side, and the light source is mounted on the other side. A cover to which a substrate is attached; a light-transmitting glove attached to the other side of the cover so as to cover the light emitting diode; And a diffusion sheet sandwiched between the end portions of the globe.
本発明および以下の各発明において、特に言及しない限り各構成は以下による。   In the present invention and each of the following inventions, each configuration is as follows unless otherwise specified.
基板は、1個の発光ダイオードが実装されていてもよく、複数個の発光ダイオードが実装されていてもよい。   One light emitting diode may be mounted on the substrate, or a plurality of light emitting diodes may be mounted.
拡散シートは、酸化チタン(TiO)やシリカ(SiO)などの光拡散性微粒子を合成樹脂例えばポリアミド系樹脂の材料に混入して練りこみ加工して形成される。その厚みは、発光ダイオードからの放射光をグローブで拡散させる度合に応じて、適宜設定すればよい。 The diffusion sheet is formed by mixing light diffusing fine particles such as titanium oxide (TiO 2 ) and silica (SiO 2 ) into a synthetic resin, for example, a polyamide resin material, and kneading. The thickness may be appropriately set according to the degree to which the emitted light from the light emitting diode is diffused by the globe.
グローブは、ガラスまたはプラスチックなどの合成樹脂のいずれで形成されていてもよい。   The globe may be formed of any synthetic resin such as glass or plastic.
拡散シートの端縁部がカバーとグローブ端部との間で挟持されていることにより、拡散シートは、グローブが破損したときにその破片が飛散することを防止可能である。   Since the edge of the diffusion sheet is sandwiched between the cover and the end of the globe, the diffusion sheet can prevent the fragments from scattering when the globe is damaged.
本発明によれば、発光ダイオードから放射された光は、グローブに入射し拡散シートにより拡散される。この光拡散により、グローブの外表面の略全域が明るくなり、グローブで略均一な輝度が得られる。そして、拡散光は、グローブの外表面の略全域からグローブの外方側に出射される。   According to the present invention, the light emitted from the light emitting diode enters the globe and is diffused by the diffusion sheet. By this light diffusion, substantially the entire area of the outer surface of the globe is brightened, and a substantially uniform brightness is obtained with the globe. The diffused light is emitted from substantially the entire outer surface of the globe to the outer side of the globe.
そして、拡散シートの端縁部がカバーとグローブ端部との間で挟持され、グローブの外表面の全領域に拡散シートが被着されるのみの簡素な構成で、拡散シードの端縁部が外部に露出することがないので、外観が損なわれることなく、略均一な輝度が得られる。   Then, the edge of the diffusion sheet is sandwiched between the cover and the end of the globe, and the diffusion sheet is attached to the entire outer surface of the globe. Since it is not exposed to the outside, a substantially uniform luminance can be obtained without impairing the appearance.
請求項2に記載のLED電球の発明は、請求項1記載のLED電球において、発光ダイオードは、複数個が基板に実装され、カバーは、伝熱性の金属からなることを特徴とする。   According to a second aspect of the present invention, in the LED light bulb according to the first aspect, a plurality of light emitting diodes are mounted on a substrate, and the cover is made of a heat conductive metal.
伝熱性の金属としては、例えばアルミニウム(Al)、銅(Cu)やステンレス(SUS)などを用いることができる。そして、カバーは、例えば鋳造、鍛造または切削加工により形成することができる。また、カバーは、熱伝導のよいセラミックや合成樹脂などを用いて形成することができる。しかし、セラミックは高価であり、合成樹脂は複数個の発光ダイオードからの熱により熱劣化して品質が低下するおそれがある。伝熱性の金属からなるカバーは、複数個の発光ダイオードからの熱を効果的に伝熱して放熱させ、また比較的安価に形成できる。   For example, aluminum (Al), copper (Cu), stainless steel (SUS), or the like can be used as the heat conductive metal. The cover can be formed by, for example, casting, forging, or cutting. In addition, the cover can be formed using ceramic, synthetic resin, or the like with good thermal conductivity. However, ceramic is expensive, and synthetic resin may be deteriorated due to heat deterioration due to heat from a plurality of light emitting diodes. The cover made of a heat conductive metal can effectively transfer heat from a plurality of light emitting diodes to dissipate it, and can be formed at a relatively low cost.
本発明によれば、複数個の発光ダイオードから放射されたそれぞれの光は、拡散シートにより拡散される。そして、拡散光によってグローブの略全域が明るくなって、グローブで略均一な輝度が得られる。複数個の発光ダイオードからそれぞれ放射されて拡散シートにより拡散された拡散光は、グローブから外方側に出射される。   According to the present invention, each light emitted from the plurality of light emitting diodes is diffused by the diffusion sheet. And the substantially whole area | region of a glove becomes bright with diffused light, and substantially uniform brightness | luminance is obtained with a glove. Diffused light emitted from a plurality of light emitting diodes and diffused by the diffusion sheet is emitted outward from the globe.
請求項3に記載の照明器具の発明は、請求項1または2記載のLED電球と;このLED電球が装着される電球用ソケットを配設している器具本体と;を具備していることを特徴とする。   The invention of the lighting fixture according to claim 3 comprises the LED bulb according to claim 1 or 2; and a fixture body in which a socket for a bulb to which the LED bulb is mounted is disposed. Features.
本発明によれば、LED電球のグローブの略全域が明るく光っているので、所望の配光が得られやすい照明器具が提供される。   ADVANTAGE OF THE INVENTION According to this invention, since the substantially whole region of the globe of a LED bulb is shining brightly, the lighting fixture with which a desired light distribution is easy to be obtained is provided.
請求項1の発明によれば、LED電球は、グローブで略均一な輝度が得られるので、グローブから出射される照明光が人に眩しさや不快感を与えにくくすることができる。そして、拡散シートをグローブの外表面の略全域に被着する簡素な構成であり、拡散シードの端縁部が外部に露出することがないので、外観が損なわれることなく略均一な輝度が得られるLED電球を安価に形成することができる。   According to the first aspect of the present invention, since the LED bulb can obtain substantially uniform brightness with the globe, the illumination light emitted from the globe can make it difficult for the person to be dazzled or uncomfortable. The diffusion sheet is simply applied to substantially the entire outer surface of the globe, and the edge of the diffusion seed is not exposed to the outside, so that a substantially uniform brightness can be obtained without impairing the appearance. LED bulbs can be formed at low cost.
請求項2の発明によれば、LED電球は、複数個の発光ダイオードを具備するので、略均一な輝度が得られるグローブからの出射光で人に眩しさや不快感を与えにくくして明るく照明することができる。   According to the invention of claim 2, since the LED bulb includes a plurality of light emitting diodes, the light emitted from the globe that can obtain a substantially uniform luminance is less likely to cause glare and discomfort to the person and illuminates brightly. be able to.
請求項3の発明によれば、LED電球のグローブの略全域から光が出射されるので、人に眩しさや不快感を与えにくい所望の配光の照明器具を提供することができる。   According to the invention of claim 3, since light is emitted from substantially the entire area of the globe of the LED bulb, it is possible to provide a lighting device with a desired light distribution that hardly gives glare or discomfort to a person.
以下、本発明の一実施の形態について図面を参照して説明する。まず、本発明の第1の実施形態について説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, a first embodiment of the present invention will be described.
図1は、本発明の第1の実施形態を示すLED電球の一部切り欠き概略断面図、図2は、同じくLED電球の概略分解正面図である。   FIG. 1 is a partially cutaway schematic cross-sectional view of an LED bulb showing a first embodiment of the present invention, and FIG. 2 is a schematic exploded front view of the LED bulb.
図1において、LED電球1は、発光ダイオード2、点灯装置3、カバー4、グローブ5および拡散シート6を有して構成されている。   In FIG. 1, an LED bulb 1 includes a light emitting diode 2, a lighting device 3, a cover 4, a globe 5, and a diffusion sheet 6.
発光ダイオード2は、例えば可視光を放射する面実装形であって、複数個例えば5個が基板7に実装されている。基板7は、例えばガラスエポキシ材や紙フェノール材により四角形状に形成され、その中心において複数個の発光ダイオード2を対称的となるように実装している。   The light-emitting diodes 2 are, for example, a surface-mount type that emits visible light, and a plurality of, for example, five are mounted on the substrate 7. The substrate 7 is formed in a quadrangular shape, for example, with a glass epoxy material or a paper phenol material, and a plurality of light emitting diodes 2 are mounted symmetrically at the center.
点灯装置3は、発光ダイオード2を点灯させる点灯回路部品(図示しない。)から構成され、交流電圧例えば100Vを直流電圧例えば24Vに変換して発光ダイオード2に供給するように構成されている。   The lighting device 3 is composed of a lighting circuit component (not shown) for lighting the light emitting diode 2, and is configured to convert an AC voltage, for example, 100 V into a DC voltage, for example, 24 V, and supply the converted voltage to the light emitting diode 2.
カバー4は、伝熱性を有するように例えばアルミニウム(Al)で形成され、一方側に円筒状の口金取付部(図示しない。)が形成され、他方側に拡開した環状のカバー部9が形成されている。そして、口金取付部にエジソンタイプのE26形などの口金10を装着している。口金10は、シェル部10aおよびアイレット部10bに点灯装置3から引き出されているリード線(図示しない。)が接続されている。   The cover 4 is made of, for example, aluminum (Al) so as to have heat conductivity, a cylindrical base attaching portion (not shown) is formed on one side, and an annular cover portion 9 that is expanded on the other side is formed. Has been. A base 10 such as an Edison type E26 is attached to the base mounting portion. In the base 10, lead wires (not shown) drawn from the lighting device 3 are connected to the shell portion 10 a and the eyelet portion 10 b.
そして、カバー部9の開口部9Aには、所定の肉厚を有する略円板状の基台11が伝熱性の接着剤などにより固着されている。基台11は、伝熱性を有するように例えばアルミニウム(Al)で形成され、カバー4の開口に面している表面11aに基板7が取り付けられ、裏面11bに点灯装置3が取り付けられている。点灯装置3は、カバー4のカバー部9に収容されている。   A substantially disk-shaped base 11 having a predetermined thickness is fixed to the opening 9A of the cover portion 9 with a heat conductive adhesive or the like. The base 11 is made of, for example, aluminum (Al) so as to have heat conductivity, the substrate 7 is attached to the front surface 11a facing the opening of the cover 4, and the lighting device 3 is attached to the rear surface 11b. The lighting device 3 is accommodated in the cover portion 9 of the cover 4.
カバー4および基台11は、それぞれ伝熱性の例えばアルミニウム(Al)で形成されているので、発光ダイオード2の点灯により発生した熱は、基板7から基台11に、基台11からカバー4にそれぞれ迅速に伝熱されてカバー4から放熱される。これにより、基板7および発光ダイオード2の温度上昇および温度むらが防止される。すなわち、カバー4および基台11をそれぞれ伝熱性の金属で形成することにより、基板7に複数個の発光ダイオード2を配設するようにしている。   Since the cover 4 and the base 11 are each formed of heat conductive aluminum (Al), for example, the heat generated by the lighting of the light emitting diode 2 is transferred from the substrate 7 to the base 11 and from the base 11 to the cover 4. Each of them is quickly transferred and radiated from the cover 4. Thereby, the temperature rise and temperature unevenness of the substrate 7 and the light emitting diode 2 are prevented. That is, the cover 4 and the base 11 are each formed of a heat conductive metal so that a plurality of light emitting diodes 2 are disposed on the substrate 7.
グローブ5は、透光性を有してなり、例えば透明のガラスや合成樹脂などの材質により、端部5aに開口12を有する略半球状に形成されている。そして、端部5aがカバー4のカバー部9の内側に嵌合され、例えばシリコーン樹脂やエポキシ樹脂などの接着剤による接着固定により取り付けられている。これにより、複数個の発光ダイオード2は、グローブ5の開口12に位置して、グローブ5により覆われている。   The globe 5 has translucency and is formed in a substantially hemispherical shape having an opening 12 in the end portion 5a, for example, by a material such as transparent glass or synthetic resin. And the edge part 5a is fitted inside the cover part 9 of the cover 4, for example, is attached by the adhesive fixation by adhesives, such as a silicone resin and an epoxy resin. Accordingly, the plurality of light emitting diodes 2 are located in the opening 12 of the globe 5 and are covered with the globe 5.
拡散シート6は、酸化チタン(TiO)やシリカ(SiO)などの光拡散性微粒子を例えばポリアミド系樹脂の材料に混入して練りこみ加工して形成されたものである。そして、厚みは、例えば0.05〜0.2mmに形成している。 The diffusion sheet 6 is formed by mixing light diffusing fine particles such as titanium oxide (TiO 2 ) and silica (SiO 2 ) into, for example, a polyamide resin material and kneading. And thickness is formed in 0.05-0.2 mm, for example.
そして、拡散シート6は、図2に示すように、グローブ5がカバー4に取り付けられる前にグローブ5に被着される。すなわち、グローブ5の外表面5bの全域に被着可能に形成された拡散シート6が外表面5bを覆うように被される。そして、グローブ5を周回するようにしてグローブ5の頂部5c側から端部5a側に所定温度および所定圧力の熱風を吹き付ける。これにより、拡散シート6は、熱収縮してグローブ5の外表面5bに密着する。このとき、拡散シート6がグローブ5の外表面5bにおいてしわなどを形成しないように、また、グローブ5の端部5aに拡散シート6の端縁部6aが位置するように処理される。   As shown in FIG. 2, the diffusion sheet 6 is attached to the globe 5 before the globe 5 is attached to the cover 4. That is, the diffusion sheet 6 formed so as to be able to be adhered to the entire outer surface 5b of the globe 5 is covered so as to cover the outer surface 5b. Then, hot air having a predetermined temperature and a predetermined pressure is blown from the top 5c side of the globe 5 to the end 5a side so as to go around the globe 5. Thereby, the diffusion sheet 6 is heat-shrinked and adheres to the outer surface 5 b of the globe 5. At this time, processing is performed so that the diffusion sheet 6 does not form wrinkles or the like on the outer surface 5 b of the globe 5 and the edge portion 6 a of the diffusion sheet 6 is positioned at the end portion 5 a of the globe 5.
そして、拡散シート6を被着したグローブ5は、カバー4のカバー部9の内側に嵌合されて接着剤により取り付けられる。このとき、図1に示すように、拡散シート6の端縁部6aがカバー部9とグローブ端部5aとの間で挟持されて外部に露出しないようにされている。   The globe 5 with the diffusion sheet 6 attached is fitted inside the cover portion 9 of the cover 4 and attached with an adhesive. At this time, as shown in FIG. 1, the end edge 6a of the diffusion sheet 6 is sandwiched between the cover 9 and the globe end 5a so as not to be exposed to the outside.
次に、本発明の第1の実施形態の作用について説明する。   Next, the operation of the first embodiment of the present invention will be described.
口金10が給電されると、点灯装置3が動作し直流電圧例えば24Vが出力される。直流電圧は、基板7に実装されている複数個の発光ダイオード2に印加され、発光ダイオード2が点灯し、発光ダイオード2から可視光例えば白色光が放射される。   When the base 10 is fed, the lighting device 3 operates and a DC voltage, for example, 24V is output. The DC voltage is applied to the plurality of light emitting diodes 2 mounted on the substrate 7, the light emitting diode 2 is turned on, and visible light, for example, white light is emitted from the light emitting diode 2.
発光ダイオード2から放射された可視光は、透光性のグローブ5に入射し、グローブ5を透過して拡散シート6に入射する。拡散シート6に入射した可視光の一部は、拡散シート6を透過して外方に出射される。また、拡散シート6に入射した可視光のうち、酸化チタン(TiO)やシリカ(SiO)などの光拡散性微粒子に当たった可視光は、当該微粒子により乱反射される。ここで、拡散シート6は、グローブ5の外表面5aに密着するように被着されていて、その形状は略半球状となっているので、前記乱反射の可視光がグローブ5の外表面5aの略全域に反射される。こうして、複数個の発光ダイオード2から放射された可視光は、それぞれグローブ5の外表面5a側において拡散される。そして、外部からグローブ5を視認すると、グローブ5の外表面5aの略全域が明るく見え、当該全域が光っているように見える。これにより、グローブ5で略均一な輝度が得られる。そして、拡散光は、グローブ5の外表面5aの略全域側から外方側に出射される。 Visible light emitted from the light emitting diode 2 enters the translucent globe 5, passes through the globe 5, and enters the diffusion sheet 6. Part of the visible light incident on the diffusion sheet 6 passes through the diffusion sheet 6 and is emitted outward. In addition, among visible light incident on the diffusion sheet 6, visible light that hits light diffusing fine particles such as titanium oxide (TiO 2 ) and silica (SiO 2 ) is irregularly reflected by the fine particles. Here, the diffusion sheet 6 is attached so as to be in close contact with the outer surface 5 a of the globe 5, and the shape thereof is substantially hemispherical, so that the irregular reflection visible light is reflected on the outer surface 5 a of the globe 5. Reflected to almost the entire area. Thus, visible light emitted from the plurality of light emitting diodes 2 is diffused on the outer surface 5 a side of the globe 5. When the glove 5 is visually recognized from the outside, the substantially entire area of the outer surface 5a of the glove 5 appears bright, and the entire area appears to shine. Thereby, substantially uniform brightness is obtained by the globe 5. Then, the diffused light is emitted outward from the substantially entire region side of the outer surface 5 a of the globe 5.
このように、グローブ5で略均一な輝度が得られるので、グローブ5側から出射される発光ダイオード2からの放射光が人に眩しさや不快感を与えにくくすることができる。そして、複数個の発光ダイオード2を備えるので、発光ダイオード2からの放射光の全光束が多くなって、グローブ5からの出射光により明るく照明することができる。   Thus, since the substantially uniform brightness | luminance is acquired with the globe 5, the emitted light from the light emitting diode 2 radiate | emitted from the globe 5 side can make it hard to give a person glare and discomfort. Since the plurality of light emitting diodes 2 are provided, the total luminous flux of the radiated light from the light emitting diodes 2 is increased, and the light emitted from the globe 5 can be illuminated brightly.
そして、グローブ5で略均一な輝度を得るために、拡散シート6をグローブ5の外表面5aの略全域に被着する簡素な構成であるので、LED電球1を安価に形成することができる。   And since it is the simple structure which adhere | attaches the diffusion sheet 6 in the substantially whole region of the outer surface 5a of the globe 5 in order to obtain substantially uniform brightness | luminance with the globe 5, the LED bulb 1 can be formed cheaply.
また、拡散シート6の端縁部6aをカバー4のカバー部9とグローブ5の端部5aとの間で挟持させているので、拡散シート6とグローブ5との一体感により外観が良好で商品性が向上するLED電球1を提供することができる。また、拡散シート6がグローブ5の外表面5aから剥離しにくくなるとともに、落下等によりグローブ5が破損したときにその破片が飛散することを防止することができる。   In addition, since the edge 6a of the diffusion sheet 6 is sandwiched between the cover 9 of the cover 4 and the end 5a of the globe 5, the appearance is good due to the sense of unity between the diffusion sheet 6 and the globe 5. It is possible to provide the LED bulb 1 with improved performance. Moreover, it becomes difficult for the diffusion sheet 6 to peel from the outer surface 5a of the globe 5, and it is possible to prevent the fragments from scattering when the globe 5 is damaged by dropping or the like.
次に、本発明の第2の実施形態について説明する。   Next, a second embodiment of the present invention will be described.
図3は、本発明の第2の実施形態を示すLED電球の一部切り欠き概略断面図、図4は、同じくLED電球の概略分解正面図である。なお、図1と同一部分には同一符号を付して説明は省略する。   FIG. 3 is a partially cutaway schematic cross-sectional view of an LED bulb showing a second embodiment of the present invention, and FIG. 4 is a schematic exploded front view of the LED bulb. Note that the same parts as those in FIG.
図3に示すLED電球13は、図1に示すLED電球1において、拡散シート6に代えて、2枚の拡散シート14,15がグローブ5の外表面5aに被着され、それぞれの端縁部14a,15aがカバー4のカバー部9とグローブ5の端部5aとの間で挟持されている。   The LED light bulb 13 shown in FIG. 3 has two diffusion sheets 14 and 15 attached to the outer surface 5a of the globe 5 in place of the diffusion sheet 6 in the LED light bulb 1 shown in FIG. 14 a and 15 a are sandwiched between the cover portion 9 of the cover 4 and the end portion 5 a of the globe 5.
拡散シート14,15は、図4に示すように、重ね合わされて、グローブ5がカバー4に取り付けられる前にグローブ5に被着される。以下、図2において説明したとおりである。拡散シート14,15は、同一の品種であってもよく、互いに異なる品種のものであってもよい。また、同一の品種であっても、厚さが同一であってもよく、互いに異なる厚さであってもよい。ここで、品種とは、光拡散材の種類や混入量、光拡散材が混入される合成樹脂の種類などが異なっているものをいう。   As shown in FIG. 4, the diffusion sheets 14 and 15 are overlapped and attached to the globe 5 before the globe 5 is attached to the cover 4. Hereinafter, as described in FIG. The diffusion sheets 14 and 15 may be of the same type or different types. Moreover, even if it is the same kind, thickness may be the same and mutually different thickness may be sufficient. Here, the types refer to those in which the type and amount of light diffusing material, the type of synthetic resin into which the light diffusing material is mixed, and the like are different.
2枚の拡散シート14,15がグローブ5の外表面5aに被着されることにより、グローブ5での輝度が低下し、グローブ5から出射される光束が低下するようになる。   When the two diffusion sheets 14 and 15 are attached to the outer surface 5a of the globe 5, the brightness at the globe 5 is lowered, and the light beam emitted from the globe 5 is lowered.
こうして、発光ダイオード2の品種に応じて、拡散シートの厚みや数量あるいは品種を選択するという簡素な構成により、グローブ5での輝度調整を柔軟に行うことができる。   In this way, brightness adjustment with the globe 5 can be flexibly performed by a simple configuration in which the thickness, quantity, or type of the diffusion sheet is selected according to the type of the light emitting diode 2.
次に、本発明の第3の実施形態について説明する。   Next, a third embodiment of the present invention will be described.
図5は、本発明の第3の実施形態を示す照明器具の一部切り欠き概略正面図、図6は、同じく他の照明器具の一部切り欠き概略正面図である。なお、図1と同一部分には同一符号を付して説明は省略する。   FIG. 5 is a partially cutaway schematic front view of a lighting fixture showing a third embodiment of the present invention, and FIG. 6 is a partially cutaway schematic front view of another lighting fixture. Note that the same parts as those in FIG.
図5に示す照明器具16は、天井17に吊り下げられる吊下げ形照明器具であり、外形が有底の円筒状である器具本体18にLED電球1の口金10が取り付けられる電球用ソケット19が配設されている。器具本体19は、先端に引掛シーリングキャップ20を有する電源コード21を接続している。   The lighting fixture 16 shown in FIG. 5 is a hanging type lighting fixture that is suspended from a ceiling 17, and a bulb socket 19 to which the base 10 of the LED bulb 1 is attached to a fixture main body 18 having a bottomed outer shape. It is arranged. The instrument body 19 is connected to a power cord 21 having a hooking sealing cap 20 at the tip.
そして、引掛シーリングキャップ20は、天井17に配設されている引掛シーリングボディ22に取り付けられている。これにより、電源コード21等を介して電球用ソケット19に外部電源が供給される。引掛シーリングキャップ20および引掛シーリングボディ22は、シーリングカバー23により覆われている。そして、LED電球1は、電球用ソケット19に装着されている。   The hook sealing cap 20 is attached to a hook ceiling body 22 disposed on the ceiling 17. As a result, external power is supplied to the socket 19 for the light bulb via the power cord 21 and the like. The hook sealing cap 20 and the hook sealing body 22 are covered with a sealing cover 23. The LED bulb 1 is attached to a bulb socket 19.
LED電球1は、図示しない壁スイッチのオンオフ操作に応じて点灯される。そして、グローブ5全体が光っているように見えるので、人に眩しさや不快感を与えずに照明することができる。   The LED bulb 1 is turned on in response to an on / off operation of a wall switch (not shown). And since the glove 5 whole seems to be shining, it can illuminate without giving a person glare and discomfort.
また、図6に示す照明器具24は、天井17に埋設されるダウンライトであり、外形が有底の円筒状である器具本体25にLED電球1が取り付けられる電球用ソケット26が配設されている。器具本体25は、器具本体25と一体的に設けられているカバー体27と板バネ28,28により、天井17が挟持されて、天井17に固定されている。そして、電球用ソケット26には、LED電球1が取り付けられている。   Moreover, the lighting fixture 24 shown in FIG. 6 is a downlight embedded in the ceiling 17, and a bulb socket 26 to which the LED bulb 1 is attached is disposed on a cylindrical fixture body 25 whose outer shape is a bottom. Yes. The instrument body 25 is fixed to the ceiling 17 with the ceiling 17 sandwiched between a cover body 27 and leaf springs 28, 28 provided integrally with the instrument body 25. The LED bulb 1 is attached to the socket 26 for the bulb.
LED電球1からの放射光は、直接光および器具本体25の内面で反射された反射光となって、カバー体27の開口29から下面側に出射される。   The emitted light from the LED bulb 1 becomes direct light and reflected light reflected by the inner surface of the instrument body 25 and is emitted from the opening 29 of the cover body 27 to the lower surface side.
LED電球1は、グローブ5で均一な輝度が得られて、グローブ5の略全域から放射光を出射するので、照明器具24は、人に眩しさや不快感を与えにくい所望の配光で照明することができる。   Since the LED bulb 1 can obtain uniform brightness with the globe 5 and emits radiated light from substantially the entire area of the globe 5, the lighting fixture 24 illuminates with a desired light distribution that hardly causes glare or discomfort to humans. be able to.
本発明の第1の実施形態を示すLED電球の一部切り欠き概略断面図。1 is a partially cutaway schematic cross-sectional view of an LED bulb showing a first embodiment of the present invention. 同じく、LED電球の概略分解正面図。Similarly, a schematic exploded front view of an LED bulb. 本発明の第2の実施形態を示すLED電球の一部切り欠き概略断面図。The partial notch schematic sectional drawing of the LED bulb which shows the 2nd Embodiment of this invention. 同じく、LED電球の概略分解正面図。Similarly, a schematic exploded front view of an LED bulb. 本発明の第3の実施形態を示す照明器具の一部切り欠き概略正面図。The partial notch schematic front view of the lighting fixture which shows the 3rd Embodiment of this invention. 同じく、他の照明器具の一部切り欠き概略正面図。Similarly, the partially cut away schematic front view of another lighting fixture.
符号の説明Explanation of symbols
1,13…LED電球
2…発光ダイオード
3…点灯装置
4…カバー
5…グローブ
6,14,15…拡散シート
16,24…照明器具
18,25…器具本体
DESCRIPTION OF SYMBOLS 1,13 ... LED bulb 2 ... Light emitting diode 3 ... Lighting device 4 ... Cover 5 ... Globe 6, 14, 15 ... Diffusion sheet 16, 24 ... Lighting fixture 18, 25 ... Main body of fixture

Claims (3)

  1. 基板に実装された発光ダイオードと;
    この発光ダイオードを点灯させる点灯装置と;
    この点灯装置が収容され、一方側に口金を装着し、他方側に前記基板を取り付けているカバーと;
    前記発光ダイオードを覆うように前記カバーの他方側に取り付けられた透光性のグローブと;
    このグローブの外表面の略全域に被着され、端縁部がカバーとグローブ端部との間で挟持された拡散シートと;
    を具備していることを特徴とするLED電球。
    A light emitting diode mounted on a substrate;
    A lighting device for lighting the light emitting diode;
    A cover in which the lighting device is accommodated, a base is mounted on one side, and the substrate is mounted on the other side;
    A translucent glove attached to the other side of the cover to cover the light emitting diode;
    A diffusion sheet that is deposited over substantially the entire outer surface of the globe and whose edge is sandwiched between the cover and the end of the globe;
    LED bulb characterized by comprising.
  2. 発光ダイオードは、複数個が基板に実装され、カバーは、伝熱性の金属からなることを特徴とする請求項1記載のLED電球。   The LED light bulb according to claim 1, wherein a plurality of light emitting diodes are mounted on a substrate, and the cover is made of a heat conductive metal.
  3. 請求項1または2記載のLED電球と;
    このLED電球が装着される電球用ソケットを配設している器具本体と;
    を具備していることを特徴とする照明器具。
    An LED bulb according to claim 1 or 2;
    An instrument body having a light bulb socket to which the LED light bulb is mounted;
    The lighting fixture characterized by comprising.
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