JP2013239283A - Light source device and lighting device using the same - Google Patents

Light source device and lighting device using the same Download PDF

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JP2013239283A
JP2013239283A JP2012110329A JP2012110329A JP2013239283A JP 2013239283 A JP2013239283 A JP 2013239283A JP 2012110329 A JP2012110329 A JP 2012110329A JP 2012110329 A JP2012110329 A JP 2012110329A JP 2013239283 A JP2013239283 A JP 2013239283A
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base
light
emitting diode
light emitting
source device
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JP6008275B2 (en
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Hiroshi Ogasawara
宏 小笠原
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Panasonic Corp
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Panasonic Corp
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Priority to PCT/JP2013/001354 priority patent/WO2013171945A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02—Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
    • F21V23/023—Power supplies in a casing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/002—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-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
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit 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
    • F21K9/232—Retrofit 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/005—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by permanent fixing means, e.g. gluing, riveting or embedding in a potting compound
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/40—Light sources with three-dimensionally disposed light-generating elements on the sides of polyhedrons, e.g. cubes or pyramids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a light source device capable of obtaining a high luminous flux and moreover capable of easily changing color of light or the like.SOLUTION: A light source device has a base 1 including a light emitting diode 11 and a heat sink 12 thermally connected to the light emitting diode 11, and fixation of these is made by screwing. A cover 2 having a globe 21 constituting a window part through which light from the light emitting diode is transmitted is combined detachably to the base 1 in a form of covering the light emitting diode 11. Since fixation of the base 1 is achieved by screwing and a restriction on a weight of the base 1 can be alleviated as compared with a case where fixation of the base 1 is achieved by a base similar to an incandescent bulb, a high luminous flux can be obtained. Further, color of light or the like can be easily changed by exchanging the cover 2.

Description

本発明は、光源装置及びこれを用いた照明器具に関するものである。   The present invention relates to a light source device and a lighting fixture using the same.

従来から、図８に示すように、複数個の発光ダイオード１１が固定されたヒートシンク１２を、透光性を有するグローブ２１により覆って電球形状の外形とした光源装置が提供されている。   Conventionally, as shown in FIG. 8, a light source device is provided in which a heat sink 12 to which a plurality of light emitting diodes 11 are fixed is covered with a light-transmitting globe 21 to have a bulb-shaped outer shape.

上記の光源装置は、一般的な白熱電球の口金の規格に準じた構造の口金９と、この口金９を介して供給された電力により各発光ダイオード１１をそれぞれ点灯させる点灯回路３とを有している。すなわち、上記の光源装置は、既存の白熱電球用の照明器具が有するソケットに対し、白熱電球に代えて接続することができる。   The light source device includes a base 9 having a structure conforming to a standard of a general incandescent light bulb base, and a lighting circuit 3 for lighting each light-emitting diode 11 by power supplied through the base 9. ing. In other words, the above light source device can be connected to a socket of an existing incandescent lamp lighting fixture instead of the incandescent lamp.

特開２００８−１０３１１２号公報JP 2008-103112 A

ここで、上記のような光源装置において高光束化を図る場合、より高い光束の発光ダイオード１１を用いたり、発光ダイオード１１の個数を増加させたりするだけでなく、発熱量の増加に対応してヒートシンク１２も大型化させる必要がある。従って、上記のような高光束化は、重量の増加を伴う。   Here, in the case of increasing the luminous flux in the light source device as described above, not only the use of the light-emitting diodes 11 having a higher luminous flux or the increase in the number of the light-emitting diodes 11 but also the increase in the amount of generated heat. The heat sink 12 also needs to be enlarged. Therefore, increasing the luminous flux as described above is accompanied by an increase in weight.

しかしながら、光源装置の接続に上記のように既存の口金９を用いる場合、安全に保持できる重量には限界があり、従って上記のような高光束化にも限界がある。   However, when the existing base 9 is used for the connection of the light source device as described above, there is a limit to the weight that can be safely held, and thus there is a limit to increasing the luminous flux as described above.

また、照明器具における上記の光源装置の固定に、上記のような口金９を用いず、別途のねじによるねじ止め等の手段を用いる場合、光源装置の交換が困難となることにより、光色等の変更が困難となる。   Further, when the above light source device is fixed to the lighting fixture without using the base 9 as described above, and using a means such as screwing with a separate screw, it becomes difficult to replace the light source device. It becomes difficult to change.

本発明は、上記事由に鑑みて為されたものであり、その目的は、高光束化が可能であって且つ光色等の変更が容易な光源装置を提供することにある。   The present invention has been made in view of the above reasons, and an object of the present invention is to provide a light source device capable of increasing the luminous flux and easily changing the light color or the like.

本発明の光源装置は、発光ダイオード及び前記発光ダイオードに熱的に接続されたヒートシンクを有するベースと、前記発光ダイオードの光を通過させる窓部を有して前記発光ダイオードを覆う形で前記ベースに着脱自在に結合するカバーとを備え、前記ベースには、ねじ止め用のねじが挿通されるねじ挿通穴が設けられていることを特徴とする。   The light source device of the present invention includes a base having a light emitting diode and a heat sink thermally connected to the light emitting diode, and a window portion through which light from the light emitting diode passes, and covering the light emitting diode to the base. A cover that is detachably coupled, and the base is provided with a screw insertion hole through which a screw for screwing is inserted.

上記の光源装置において、電線とコネクタとを介して前記発光ダイオードに電気的に接続され前記発光ダイオードを点灯させる点灯回路を備え、前記点灯回路は前記ベースに対して変位可能なケースに収納されていてもよい。   The light source device includes a lighting circuit that is electrically connected to the light-emitting diode via an electric wire and a connector and lights the light-emitting diode, and the lighting circuit is housed in a case that is displaceable with respect to the base. May be.

また、上記の光源装置において、前記窓部の少なくとも一部は前記発光ダイオードの光を拡散させてもよい。   In the light source device, at least a part of the window portion may diffuse light of the light emitting diode.

さらに、上記の光源装置において、前記カバーは、前記発光ダイオードの光を反射する反射部を有していてもよい。   Furthermore, in the above light source device, the cover may include a reflecting portion that reflects light from the light emitting diode.

また、本発明の照明器具は、上記のいずれかの光源装置と、前記ベースがねじ止め固定された器具本体とを備えることを特徴とする。   Moreover, the lighting fixture of this invention is equipped with one of said light source devices, and the fixture main body by which the said base was fixed by screwing.

本発明によれば、ベースの固定がねじ止めにより達成されることにより、ベースの固定が白熱電球と同様の口金により達成される場合に比べてベースの重量に対する制限が緩和されるから高光束化が可能である。また、カバーの交換により光色等を容易に変更することができる。   According to the present invention, since the fixing of the base is achieved by screwing, the restriction on the weight of the base is relaxed compared with the case where the fixing of the base is achieved by a base similar to an incandescent lamp, so that the luminous flux is increased. Is possible. Further, the light color or the like can be easily changed by replacing the cover.

本発明の実施形態を示す断面図である。It is sectional drawing which shows embodiment of this invention. 同上のベースを示す斜視図である。It is a perspective view which shows a base same as the above. 同上のカバーを示す正面図である。It is a front view which shows a cover same as the above. 同上のカバーの要部を示す斜視図である。It is a perspective view which shows the principal part of a cover same as the above. 同上の変更例を示す斜視図である。It is a perspective view which shows the example of a change same as the above. （ａ）は同上において反射部が設けられる範囲の一例を示す説明図であり、（ｂ）は（ａ）の光源装置を用いた照明器具の一例を示す斜視図である。(A) is explanatory drawing which shows an example of the range in which a reflection part is provided in the same as the above, (b) is a perspective view which shows an example of the lighting fixture using the light source device of (a). （ａ）は同上において反射部が設けられる範囲の別の例を示す説明図であり、（ｂ）は（ａ）のカバーを有する光源装置を用いた照明器具の一例を示す斜視図である。(A) is explanatory drawing which shows another example of the range in which a reflection part is provided in the same as the above, (b) is a perspective view which shows an example of the lighting fixture using the light source device which has a cover of (a). 従来例の構造を示す説明図である。It is explanatory drawing which shows the structure of a prior art example.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

本実施形態は、図１及び図２に示すように、複数個の発光ダイオード１１と、各発光ダイオード１１にそれぞれ熱的に接続されたヒートシンク１２とを有するベース１を備える。以下、上下方向は図１を基準として説明する。なお、ここでいう上下方向はあくまで説明の便宜上定義するものであって、実際の使用状態での上下方向とは必ずしも一致しない。   As shown in FIGS. 1 and 2, the present embodiment includes a base 1 having a plurality of light emitting diodes 11 and a heat sink 12 thermally connected to each light emitting diode 11. Hereinafter, the vertical direction will be described with reference to FIG. Note that the vertical direction here is defined for convenience of explanation only, and does not necessarily match the vertical direction in the actual use state.

詳しく説明すると、各発光ダイオード１１は、それぞれ例えば、青色光を発生させる少なくとも１個の発光ダイオードチップと、各発光ダイオードチップを覆い上記の青色光を白色光に変換する光学フィルタとを備える、いわゆる白色発光ダイオードである。ヒートシンク１２は、例えば銅からなる円柱形状の部品であって、軸方向を上下方向に向けている。また、図１に示すように、各発光ダイオード１１はそれぞれ１個ずつの基板１３に表面実装されている。上記の基板１３としては、ヒートシンク１２の下端部以外の外周面を覆う多角筒形状を構成する複数個の長方形状のものと、ヒートシンク１２の底面（上面）を覆う多角形状のものとがある。長方形状の基板１３に実装される発光ダイオード１１としては、直線状に並んだ複数個の発光ダイオードチップを有する細長い形状のものが用いられる。各基板１３はそれぞれ接着剤１４によりヒートシンク１２に接着されている。すなわち、各発光ダイオード１１はそれぞれ基板１３と接着剤１４とを介してヒートシンク１２に熱的に接続されている。上記の基板１３や接着剤１４としては、それぞれなるべく熱伝導率が高いものが用いられることが望ましい。例えば、基板１３としてはセラミック基板を用い、接着剤１４としてはシリコーン接着剤を用いる。なお、図２のように各基板１３に１個ずつの発光ダイオード１１を実装する代わりに、１個の基板１３に複数個の発光ダイオード１１を実装してもよい。   More specifically, each light-emitting diode 11 includes, for example, at least one light-emitting diode chip that generates blue light, and an optical filter that covers each light-emitting diode chip and converts the blue light into white light. It is a white light emitting diode. The heat sink 12 is a cylindrical part made of copper, for example, and the axial direction is directed vertically. As shown in FIG. 1, each light emitting diode 11 is surface-mounted on a single substrate 13. The substrate 13 includes a plurality of rectangular shapes that form a polygonal cylinder shape that covers the outer peripheral surface of the heat sink 12 other than the lower end portion, and a polygonal shape that covers the bottom surface (upper surface) of the heat sink 12. As the light emitting diode 11 mounted on the rectangular substrate 13, an elongated one having a plurality of light emitting diode chips arranged in a straight line is used. Each substrate 13 is bonded to the heat sink 12 by an adhesive 14. That is, each light emitting diode 11 is thermally connected to the heat sink 12 via the substrate 13 and the adhesive 14. As said board | substrate 13 and the adhesive agent 14, it is desirable to use what has respectively high thermal conductivity. For example, a ceramic substrate is used as the substrate 13, and a silicone adhesive is used as the adhesive 14. Instead of mounting one light emitting diode 11 on each substrate 13 as shown in FIG. 2, a plurality of light emitting diodes 11 may be mounted on one substrate 13.

さらに、ベース１は、ヒートシンク１２の下端部を囲む形でヒートシンク１２に結合した筒部１５１と筒部１５１の下端から径方向の外向きに突設された鍔部１５２とを有する台座１５を備える。ヒートシンク１２の放熱は主に台座１５を介して行われるので、台座１５の材料としては、熱伝導率がなるべく高い材料（例えばアルミニウム）を用いることが望ましい。上記のような台座１５は例えばダイカスト成型により製造することができる。   Further, the base 1 includes a pedestal 15 having a cylindrical portion 151 coupled to the heat sink 12 so as to surround the lower end portion of the heat sink 12 and a flange portion 152 projecting radially outward from the lower end of the cylindrical portion 151. . Since the heat dissipation of the heat sink 12 is mainly performed via the pedestal 15, it is desirable to use a material (for example, aluminum) having as high a thermal conductivity as possible. The pedestal 15 as described above can be manufactured, for example, by die casting.

また、台座１５の鍔部１５２上には、各発光ダイオード１１に電気的に接続されて各発光ダイオード１１を点灯させる点灯回路３が配置されている。点灯回路３は、例えば、外部の電源から入力された電力を適宜の直流電力に変換して各発光ダイオードに供給する周知の直流電源回路である。   Moreover, on the collar part 152 of the base 15, the lighting circuit 3 which is electrically connected to each light emitting diode 11 and lights each light emitting diode 11 is disposed. The lighting circuit 3 is, for example, a well-known DC power supply circuit that converts electric power input from an external power supply into appropriate DC power and supplies it to each light emitting diode.

さらに、ベース１は、台座１５の筒部１５１を囲む筒形状であって台座１５に結合して台座１５とともに点灯回路３を覆うベースカバー１６を有する。ベースカバー１６は例えば合成樹脂からなる。また、台座１５の上側には、台座１５と基板１３との間においてヒートシンク１２の外周面を覆う筒形状のスペーサ１８が配設されている。   Furthermore, the base 1 has a cylindrical shape surrounding the cylindrical portion 151 of the pedestal 15, and has a base cover 16 that is coupled to the pedestal 15 and covers the lighting circuit 3 together with the pedestal 15. The base cover 16 is made of, for example, a synthetic resin. A cylindrical spacer 18 that covers the outer peripheral surface of the heat sink 12 is disposed between the pedestal 15 and the substrate 13 above the pedestal 15.

また、本実施形態は、図３及び図４に示すように、透光性を有する材料からなり各発光ダイオード１１の光を通過させる窓部としてのグローブ２１を有して各発光ダイオード１１を覆う形でベース１２に着脱自在に結合するカバー２を備える。グローブ２１は例えばガラスからなり、下方に開口した半球面形状と、この半球面形状の下端に連続し下方に向かって内径と外径とが徐々に小さくされた漏斗形状とが組み合わさった、電球形状となっている。   Further, in the present embodiment, as shown in FIGS. 3 and 4, each light emitting diode 11 is covered with a globe 21 as a window portion made of a light-transmitting material and allowing light from each light emitting diode 11 to pass therethrough. A cover 2 detachably coupled to the base 12 is provided. The globe 21 is made of, for example, glass, and combines a hemispherical shape that opens downward and a funnel shape that is continuous with the lower end of the hemispherical shape and has an inner diameter and an outer diameter gradually decreasing downward. It has a shape.

さらに、カバー２は、グローブ２１の下端部を囲む筒形状の口金２２を有する。口金２２は例えば合成樹脂からなり、カバー２は口金２２においてベース１に結合する。詳しく説明すると、ベース１においてベースカバー１６の外周面にはそれぞれ径方向の外向きに突出する係止凸部１６１が複数個（例えば３個）、周方向にほぼ等間隔に設けられている。また、図４に示すように、口金２２の内周面の下端部には被係止凸部２２１が径方向の内向きに突設されている。カバー２をベース１に取り付ける際には、被係止凸部２２１の位置を係止凸部１６１の位置に対してずらした状態でカバー２をベース１に被せる。その後、ベース１１に対してカバー２を例えば上方から見て時計回りに回転させれば、各係止凸部１６１がそれぞれ１個ずつの被係止凸部２２１の上側に係入する。ここにおいて、ベース１の上方へのカバー２の脱落が防止され、ベース１に対するカバー２の取付が完了する。すなわち、カバー２はいわゆるバヨネット締結によりベース１に対して着脱自在に結合する。   Furthermore, the cover 2 has a cylindrical base 22 that surrounds the lower end of the globe 21. The base 22 is made of, for example, a synthetic resin, and the cover 2 is bonded to the base 1 at the base 22. More specifically, in the base 1, a plurality of (for example, three) locking projections 161 projecting outward in the radial direction are provided on the outer peripheral surface of the base cover 16 at substantially equal intervals in the circumferential direction. Further, as shown in FIG. 4, a locking convex portion 221 is provided projecting inward in the radial direction at the lower end portion of the inner peripheral surface of the base 22. When the cover 2 is attached to the base 1, the cover 2 is placed on the base 1 in a state where the position of the locked convex portion 221 is shifted from the position of the locking convex portion 161. Thereafter, when the cover 2 is rotated clockwise with respect to the base 11 as viewed from above, for example, each locking projection 161 is engaged with the locking projection 221 one by one. Here, the cover 2 is prevented from falling off above the base 1, and the attachment of the cover 2 to the base 1 is completed. That is, the cover 2 is detachably coupled to the base 1 by so-called bayonet fastening.

また、各係止凸部１６１には、それぞれ板ばねからなるクリックばね１７が取り付けられている。各クリックばね１７は、それぞれ、係止凸部１６１を上下から挟む形で係止凸部１６１に結合した結合部１７１と、結合部１７１の下端からベースカバー１６の外周面に沿って上方から見て時計回りに延長されたばね部１７２とを有する。ばね部１７２は先端部を結合部１７１に対して上下に変位させるように弾性変形可能であって、ばね部１７２の先端部には、上面が凸曲面とされたクリック部１７３が、ベースカバー１６から離れる方向（径方向の外向き）に突設されている。また、口金２２の下端面において、各被係止凸部２２１に対し上方から見て時計回り方向（下方から見て反時計回り方向）の近傍には、それぞれクリック凹部２２２が設けられている。ベース１にカバー２を取り付ける過程では、クリック部１７３が口金２２のクリック凹部２２２以外の部位により下方へ押圧させることでクリックばね１７のばね部１７２が弾性変形する。そして、係止凸部１６１が被係止凸部２２１の上側に完全に係入した際（つまり、係止凸部１６１が完全に係止された際）には、クリック部１７３がクリック凹部２２２に係入することでクリックばね１７が弾性復帰する。すなわち、上記の弾性復帰によって作業者にクリック感が与えられるから、作業者は係止凸部１６１の係入が完了したこと（すなわち取付が完了したこと）を認識しやすくなる。また、クリック凹部２２２にクリック部１７３が係入することで、ベース１に対するカバー２の回転に抵抗力が発生するから、使用者の意図しないカバー２の回転が抑えられる。   In addition, a click spring 17 made of a leaf spring is attached to each locking projection 161. Each click spring 17 includes a coupling part 171 coupled to the latching convex part 161 so as to sandwich the latching convex part 161 from above and below, and a lower end of the coupling part 171 viewed from above along the outer peripheral surface of the base cover 16. And a spring portion 172 extended clockwise. The spring portion 172 can be elastically deformed so as to displace the tip portion up and down with respect to the coupling portion 171, and a click portion 173 having a convex curved upper surface is provided at the tip portion of the spring portion 172. It protrudes in the direction away from (radially outward). In addition, on the lower end surface of the base 22, click recesses 222 are provided in the vicinity of each locked convex portion 221 in the clockwise direction when viewed from above (counterclockwise direction when viewed from below). In the process of attaching the cover 2 to the base 1, the click portion 173 is pressed downward by a portion other than the click recess 222 of the base 22, so that the spring portion 172 of the click spring 17 is elastically deformed. When the locking projection 161 is completely engaged above the locked projection 221 (that is, when the locking projection 161 is completely locked), the click portion 173 is clicked by the click recess 222. The click spring 17 is elastically restored by engaging with the. In other words, since the above-described elastic recovery gives the operator a click feeling, the operator can easily recognize that the engagement of the locking convex portion 161 has been completed (that is, the attachment has been completed). Further, since the click portion 173 is engaged with the click recess 222, a resistance force is generated in the rotation of the cover 2 with respect to the base 1, so that the rotation of the cover 2 unintended by the user is suppressed.

なお、上記のように点灯回路３をベース１に対して固定する代わりに、図５に示すように、ベース１とは別途のケース３０に収納するとともに柔軟なケーブル４１，４２を介してベース１に接続することで、点灯回路３をベース１に対して変位可能としてもよい。上記のケーブル４１，４２は、点灯回路３と各発光ダイオード１１とを電気的に接続する電線を含む。また、一端がベース１に接続されたケーブル４１と、一端が点灯回路３に接続されたケーブル４２とは、コネクタ５を介して互いに接続されている。つまり、図５の例において、点灯回路３と各発光ダイオード１１とは、ケーブル４１，４２とコネクタ５とを介して互いに電気的に接続されている。なお、図５では、点灯回路３を外部の電源に電気的に接続するケーブルの図示は省略している。上記のように点灯回路３の一部又は全部をベース１から分離させれば、点灯回路３について設計上の制限が緩和される。また、点灯回路３をベース１から分離させるとともに点灯回路３とベース１との間にコネクタ５を介在させているので、点灯回路３とベース１との一方のみを残して他方を交換するといったことが比較的に容易となっている。さらに、上記のケース３０には、点灯回路３を制御する制御回路や、電源と点灯回路３との間に介在してサージ電圧が入力されたときに点灯回路３と電源との接続を遮断するサージ保護回路など、他の回路が収納されていてもよい。上記の制御回路としては、外部のリモコン装置から入力された信号（有線信号又は無線信号）に応じて点灯回路３を制御するものや、光センサや人感センサのようなセンサを有してセンサの出力に応じて点灯回路３を制御するものが考えられる。上記の制御としては、点灯・消灯のほか、光出力の変更も考えられる。発光ダイオード１１の光出力の変更は、例えば、発光ダイオード１１に出力する電流値の変更や、人の目に点滅として認識されない程度に十分に高い周波数での点滅におけるオンデューティの変更によって達成することができる。また、発光ダイオード１１として互いに光色が異なる複数種類のものが混在している場合、上記の制御回路は、上記複数種類の発光ダイオード１１の光出力の比率を変更することで全体の混色としての光色を変更するものであってもよい。   Instead of fixing the lighting circuit 3 to the base 1 as described above, as shown in FIG. 5, the base 1 is housed in a case 30 separate from the base 1 and via the flexible cables 41 and 42. The lighting circuit 3 may be displaceable with respect to the base 1 by connecting to the base 1. The cables 41 and 42 include electric wires that electrically connect the lighting circuit 3 and each light emitting diode 11. The cable 41 having one end connected to the base 1 and the cable 42 having one end connected to the lighting circuit 3 are connected to each other via the connector 5. That is, in the example of FIG. 5, the lighting circuit 3 and each light emitting diode 11 are electrically connected to each other via the cables 41 and 42 and the connector 5. In FIG. 5, illustration of a cable for electrically connecting the lighting circuit 3 to an external power source is omitted. If a part or all of the lighting circuit 3 is separated from the base 1 as described above, design restrictions on the lighting circuit 3 are alleviated. Further, since the lighting circuit 3 is separated from the base 1 and the connector 5 is interposed between the lighting circuit 3 and the base 1, only one of the lighting circuit 3 and the base 1 is left and the other is replaced. Is relatively easy. Further, in the case 30 described above, the connection between the lighting circuit 3 and the power source is cut off when a surge voltage is input between the control circuit for controlling the lighting circuit 3 and the power source and the lighting circuit 3. Other circuits such as a surge protection circuit may be accommodated. Examples of the control circuit include a circuit that controls the lighting circuit 3 according to a signal (wired signal or wireless signal) input from an external remote control device, or a sensor having a sensor such as an optical sensor or a human sensor. It is possible to control the lighting circuit 3 according to the output of. As the above control, in addition to turning on / off, changing the light output is also conceivable. The change of the light output of the light emitting diode 11 is achieved by, for example, changing the current value output to the light emitting diode 11 or changing the on-duty in blinking at a frequency sufficiently high that it is not recognized as blinking by human eyes. Can do. Further, when a plurality of types of light emitting diodes 11 having different light colors are mixed, the control circuit changes the ratio of the light output of the plurality of types of light emitting diodes 11 as a whole color mixture. The light color may be changed.

ここで、カバー２のグローブ２１は、無色透明であってもよいし、有色であってもよいし、発光ダイオード１１の光を拡散させる表面処理が一部又は全体に施されていてもよい。カバー２のグローブ２１を有色とした場合、グローブ２１を通じて出射する光の光色はグローブ２１の色に応じて変化するから、カバー２の交換によって光色を変更することができる。また、上記の表面処理としては、例えば、粗面化や、アルミナやシリカの粒子の定着などが考えられる。または、上記の表面処理に代えて、グローブ２１を例えば乳白色の材料で構成することで、発光ダイオード１１の光が拡散されるようにしてもよい。   Here, the globe 21 of the cover 2 may be colorless and transparent, may be colored, or may be partially or wholly subjected to a surface treatment for diffusing light of the light emitting diode 11. When the globe 21 of the cover 2 is colored, the light color of the light emitted through the globe 21 changes according to the color of the globe 21, so that the light color can be changed by replacing the cover 2. Examples of the surface treatment include roughening and fixing of alumina or silica particles. Alternatively, instead of the above surface treatment, the light of the light emitting diode 11 may be diffused by configuring the globe 21 with, for example, a milky white material.

さらに、図６（ａ）や図７（ａ）に示すように、発光ダイオード１１の光を反射させる反射部２１１がカバー２に設けられていてもよい。反射部２１１は、例えば、グローブ２１の内面または外面の一部を覆う金属膜からなる。この場合、グローブ２１において反射部２１１が設けられていない部位が窓部２１０となる。上記の金属膜は例えばスパッタリングのような周知技術を用いて形成することができる。上記のような反射部２１１を設ければ、反射部２１１の大きさや形状に応じて異なる配光が得られる。また、グローブ２１は上記のような電球形状でなくともよく、配光はグローブ２１の形状によっても変化する。   Further, as shown in FIG. 6A and FIG. 7A, a reflective portion 211 that reflects the light of the light emitting diode 11 may be provided on the cover 2. The reflecting part 211 is made of, for example, a metal film that covers a part of the inner surface or the outer surface of the globe 21. In this case, a portion of the globe 21 where the reflecting portion 211 is not provided is the window portion 210. The metal film can be formed using a known technique such as sputtering. If the reflection part 211 as described above is provided, different light distributions can be obtained depending on the size and shape of the reflection part 211. Further, the globe 21 does not have to have the shape of a light bulb as described above, and the light distribution changes depending on the shape of the globe 21.

図６（ａ）の例では、窓部２１０はグローブ２１の上端部（図６（ａ）での下端部）に形成され、発光ダイオード１１の光は上方（図６（ａ）での下方）に配光される。このようなカバー２は、例えば図６（ｂ）に示すような照明器具において用いられる。この照明器具は、ベース１が上記説明でいうところの上方を下方に向けて固定される器具本体６を備える。器具本体６は、下方に開口して光源装置が収納される収納凹部６０を有する。収納凹部６０の内面は、発光ダイオード１１の光に対する反射率を高くするように、研磨や塗装といった適宜の表面処理を施されていてもよい。また、器具本体６において収納凹部６０の開口の周囲には円環形状の鍔部６１が外向きに突設されている。さらに、器具本体６には、それぞれ天井材（図示せず）を鍔部６１の上面との間に挟む挟み金具７が連結されている。すなわち、上記の照明器具は、天井材に設けられた埋込穴に埋込配設されて下方を照明するいわゆるダウンライトであり、埋込穴の周囲において天井材を鍔部６１と挟み金具７との間に挟むことで上記の器具本体６は天井材に対して固定される。   In the example of FIG. 6A, the window 210 is formed at the upper end of the globe 21 (the lower end in FIG. 6A), and the light from the light emitting diode 11 is upward (lower in FIG. 6A). Light distribution. Such a cover 2 is used in a lighting fixture as shown in FIG. 6B, for example. This lighting fixture includes a fixture main body 6 to which the base 1 is fixed with the upper direction in the above description facing downward. The instrument body 6 has a storage recess 60 that opens downward and stores the light source device. The inner surface of the housing recess 60 may be subjected to an appropriate surface treatment such as polishing or painting so as to increase the reflectance of the light emitting diode 11 with respect to the light. In addition, an annular flange 61 projects outwardly around the opening of the storage recess 60 in the instrument body 6. Further, the fixture body 6 is connected to a clamp 7 that sandwiches a ceiling material (not shown) between the upper surface of the flange portion 61. That is, the above-described lighting fixture is a so-called downlight that is embedded in an embedding hole provided in the ceiling material and illuminates the lower part, and the ceiling material is sandwiched between the flange portion 61 and the clamp 7 around the embedding hole. The appliance body 6 is fixed with respect to the ceiling material.

図７（ａ）の例では、反射部２１１は径方向の一方側（図７（ａ）での上側）から見てグローブ２１を覆う範囲に設けられ、発光ダイオード１１の光は径方向の他方側（図７（ａ）での下側）において窓部２１０を通じて放射される。上記のようなカバー２を用いた光源装置は、窓部２１０を下方に向け（つまり、上記の説明でいうところの上下方向を水平方向に向け）、図７（ｂ）に示すような器具本体６において下向きに開口した収納凹部６０内に固定される。図７（ｂ）に示す器具本体６は、下端が地面に固定されたポール８の上端に固定されるものであり、この器具本体６と光源装置とが構成する照明器具は例えば街路灯である。   In the example of FIG. 7A, the reflecting portion 211 is provided in a range that covers the globe 21 when viewed from one side in the radial direction (the upper side in FIG. 7A), and the light from the light emitting diode 11 is the other in the radial direction. Radiated through the window 210 on the side (lower side in FIG. 7A). In the light source device using the cover 2 as described above, the window portion 210 is directed downward (that is, the vertical direction in the above description is directed in the horizontal direction), and the instrument body as shown in FIG. 6 is fixed in the storage recess 60 opened downward. The fixture main body 6 shown in FIG. 7B is fixed to the upper end of a pole 8 whose lower end is fixed to the ground. The lighting fixture constituted by the fixture main body 6 and the light source device is, for example, a street lamp. .

ここで、図２に示すように、ベース１において、台座１５の鍔部１５２には、複数個（例えば３個）のねじ挿通穴１５０が上下に貫通する形で設けられている。照明器具における器具本体６に対するベース１の固定は、上記のねじ挿通穴１５０に挿通されるねじ（図示せず）を用いたねじ止めにより達成される。   Here, as shown in FIG. 2, in the base 1, a plurality of (for example, three) screw insertion holes 150 are provided in the flange portion 152 of the base 15 so as to penetrate vertically. Fixing of the base 1 to the fixture body 6 in the lighting fixture is achieved by screwing using a screw (not shown) inserted through the screw insertion hole 150 described above.

上記構成によれば、ベース１の固定がねじ止めで達成されることにより、ベース１の固定が白熱電球と同様の口金９により達成される場合に比べてベース１の重量に対する制限が緩和されるから高光束化が可能である。   According to the above configuration, the fixing of the base 1 is achieved by screwing, so that the restriction on the weight of the base 1 is relaxed compared to the case where the fixing of the base 1 is achieved by the base 9 similar to the incandescent bulb. Therefore, high luminous flux can be achieved.

また、発光ダイオード１１を有するベース１に対し、発光ダイオード１１の光を通過させる窓部２１０を有するカバー２が着脱自在となっているから、光色や、光の拡散の程度や、配光などの変更を、カバー２の交換により容易に達成することができる。   Further, since the cover 2 having the window portion 210 that allows the light of the light emitting diode 11 to pass is detachable from the base 1 having the light emitting diode 11, the light color, the degree of light diffusion, the light distribution, etc. This change can be easily achieved by replacing the cover 2.

１ ベース
２ カバー
３ 点灯回路
５ コネクタ
６ 器具本体
１１ 発光ダイオード
１２ ヒートシンク
２１ グローブ（窓部）
３０ ケース
４１，４２ ケーブル（電線を含む）
１５０ ねじ挿通穴
２１０ 窓部
２１１ 反射部 DESCRIPTION OF SYMBOLS 1 Base 2 Cover 3 Lighting circuit 5 Connector 6 Instrument main body 11 Light emitting diode 12 Heat sink 21 Globe (window part)
30 Case 41, 42 Cable (including electric wire)
150 Screw insertion hole 210 Window 211 Reflection

Claims (5)

発光ダイオード及び前記発光ダイオードに熱的に接続されたヒートシンクを有するベースと、
前記発光ダイオードの光を通過させる窓部を有して前記発光ダイオードを覆う形で前記ベースに着脱自在に結合するカバーとを備え、
前記ベースには、ねじ止め用のねじが挿通されるねじ挿通穴が設けられていることを特徴とする光源装置。 A base having a light emitting diode and a heat sink thermally connected to the light emitting diode;
A cover that removably couples to the base so as to cover the light emitting diode with a window that allows light from the light emitting diode to pass through,
The light source device, wherein the base is provided with a screw insertion hole through which a screw for screwing is inserted. 電線とコネクタとを介して前記発光ダイオードに電気的に接続され前記発光ダイオードを点灯させる点灯回路を備え、
前記点灯回路は前記ベースに対して変位可能なケースに収納されていることを特徴とする請求項１記載の光源装置。 A lighting circuit that is electrically connected to the light emitting diode via an electric wire and a connector and lights the light emitting diode,
The light source device according to claim 1, wherein the lighting circuit is housed in a case displaceable with respect to the base. 前記窓部の少なくとも一部は前記発光ダイオードの光を拡散させることを特徴とする請求項１又は請求項２記載の光源装置。   The light source device according to claim 1, wherein at least a part of the window portion diffuses light of the light emitting diode. 前記カバーは、前記発光ダイオードの光を反射する反射部を有することを特徴とする請求項１〜３のいずれか１項に記載の光源装置。   The light source device according to claim 1, wherein the cover includes a reflection portion that reflects light of the light emitting diode. 請求項１〜４のいずれか１項に記載の光源装置と、前記ベースがねじ止め固定された器具本体とを備えることを特徴とする照明器具。   An illumination fixture comprising: the light source device according to any one of claims 1 to 4; and a fixture main body to which the base is fixed with screws.
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