JP2018147893A - lamp - Google Patents

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JP2018147893A
JP2018147893A JP2018105780A JP2018105780A JP2018147893A JP 2018147893 A JP2018147893 A JP 2018147893A JP 2018105780 A JP2018105780 A JP 2018105780A JP 2018105780 A JP2018105780 A JP 2018105780A JP 2018147893 A JP2018147893 A JP 2018147893A
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cylindrical
substrate
flange
led
socket
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JP6590027B2 (en
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孝佳 今成
Takayoshi Imanari
孝佳 今成
守幸 関根
Moriyuki SEKINE
守幸 関根
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Iwasaki Denki KK
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Iwasaki Denki KK
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Abstract

PROBLEM TO BE SOLVED: To provide a lamp including a heat radiation fin, which can obtain high heat radiation efficiency while increasing strength of the heat radiation fin.SOLUTION: An LED lamp 200 includes: a substrate installation part 221 installing an LED substrate 211 mounted with an LED 215; a cylindrical part 230 extending from a rear surface of the substrate installation part 221; a plurality of heat radiation fins 225 provided at intervals in a circumferential direction of the cylindrical part 230, on a rear surface of the substrate installation part 221; a glove 212 covering a front side of the substrate installation part 221; and a cover fixation part 262 to which the glove 212 is fixed. The heat radiation fin 225 has an outer end part 225B projecting outward with respect to the substrate installation part 221 in a radial direction of the cylindrical part 230. The cover fixation part 262 connects the outer end parts 225B of the heat radiation fins 225, and is formed into a tabular shape.SELECTED DRAWING: Figure 4

Description

本発明は、放熱フィンを備えたランプに関する。   The present invention relates to a lamp having a heat radiation fin.

従来、ランプの基板載置部から外周側に放射状に延びる放熱フィンを備え、各放熱フィンを、放熱フィンの下端に設けられる平板状のリングで一体に連結し、リングの内縁側を開口としたランプが知られている（例えば、特許文献１参照）。
また、ランプの基板載置部の外周面から外側に放射状に延びる放熱フィンを備え、放熱フィンの外郭を管状の放熱リムで連結したランプが知られている（例えば、特許文献２参照）。 Conventionally, a radiation fin extending radially outward from the lamp substrate mounting portion is provided, and each radiation fin is integrally connected by a flat ring provided at the lower end of the radiation fin, and the inner edge side of the ring is an opening. A lamp is known (see, for example, Patent Document 1).
There is also known a lamp that includes heat radiation fins that extend radially outward from the outer peripheral surface of the substrate mounting portion of the lamp, and in which the outer periphery of the heat radiation fin is connected by a tubular heat radiation rim (see, for example, Patent Document 2).

特開２０１２−２２７１７３号公報JP 2012-227173 A 特表２０１２−５０４３０５号公報Special table 2012-504305 gazette

しかしながら、特許文献１のランプでは、上記リングによって放熱フィンの強度を上げることができるが、放熱フィンの間に設けられる開口の一部が、放熱フィンの下端の平板状のリングによって塞がれるため、空気が流れにくくなり、放熱効率に課題がある。また、特許文献２のランプでは、上記放熱リムによって放熱フィンの強度を上げることができるが、放熱リムが設けられる放熱フィンは、基板載置部の外周面から延びているため、基板載置部から放熱フィンに熱が伝わり難く、放熱効率に課題がある。
本発明は、上述した事情に鑑みてなされたものであり、放熱フィンを備えたランプにおいて、放熱フィンの強度を増加させながら、高い放熱効率を得られるようにすることを目的とする。 However, in the lamp of Patent Document 1, although the strength of the radiating fin can be increased by the ring, a part of the opening provided between the radiating fins is blocked by the flat ring at the lower end of the radiating fin. , Air becomes difficult to flow, there is a problem in heat dissipation efficiency. Further, in the lamp of Patent Document 2, the strength of the heat radiation fin can be increased by the heat radiation rim. However, since the heat radiation fin provided with the heat radiation rim extends from the outer peripheral surface of the substrate platform, It is difficult for heat to be transferred from the heat dissipation fin to the heat dissipation fin, and there is a problem in heat dissipation efficiency.
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to obtain a high heat radiation efficiency while increasing the strength of a heat radiation fin in a lamp having a heat radiation fin.

上記目的を達成するために、本発明は、発光素子を実装した基板を載置する基板載置部と、前記基板載置部の裏面から延びる筒状部と、前記基板載置部の裏面に、前記筒状部の周方向に間隔をあけて設けられた複数の放熱フィンと、前記基板載置部の表側を覆うカバーと、前記カバーが固定されるカバー固定部と、を備え、前記放熱フィンは、前記筒状部の径方向において前記基板載置部よりも外側に突出した外端部を有し、前記カバー固定部は、前記放熱フィンの前記外端部同士を連結する板状であることを特徴とする。   In order to achieve the above-mentioned object, the present invention provides a substrate mounting portion for mounting a substrate on which a light emitting element is mounted, a cylindrical portion extending from the back surface of the substrate mounting portion, and a back surface of the substrate mounting portion. A plurality of heat radiation fins provided at intervals in the circumferential direction of the cylindrical portion, a cover that covers the front side of the substrate mounting portion, and a cover fixing portion to which the cover is fixed, The fin has an outer end portion that protrudes outward from the substrate mounting portion in the radial direction of the cylindrical portion, and the cover fixing portion is a plate shape that connects the outer end portions of the radiating fins. It is characterized by being.

上記構成において、前記基板載置部と前記放熱フィンとは、一体成型されている構成としてもよい。
上記構成において、前記カバーは、外周部から径方向外側に延びる固定部を有し、前記固定部は、前記カバー固定部に設けられるボス部に固定される構成としてもよい。
上記構成において、前記放熱フィンの前記外端部の先端部同士を連結する連結部が設けられ、前記連結部は、前記筒状部の軸方向に延びる板状である構成としてもよい。 The said structure WHEREIN: The said board | substrate mounting part and the said radiation fin are good also as a structure currently integrally molded.
The said structure WHEREIN: The said cover has a fixing | fixed part extended to a radial direction outer side from an outer peripheral part, and it is good also as a structure fixed to the boss | hub part provided in the said cover fixing | fixed part.
The said structure WHEREIN: The connection part which connects the front-end | tip parts of the said outer end part of the said radiation fin is provided, and the said connection part is good also as a structure which is plate shape extended in the axial direction of the said cylindrical part.

本発明によれば、放熱フィンを備えたランプにおいて、放熱フィンの強度を増加させながら、高い放熱効率を得られる。   According to the present invention, in a lamp provided with heat radiating fins, high heat radiating efficiency can be obtained while increasing the strength of the heat radiating fins.

本実施形態に係るＬＥＤランプの正面図である。It is a front view of the LED lamp which concerns on this embodiment. ＬＥＤランプを上方から見た平面図である。It is the top view which looked at the LED lamp from upper direction. ＬＥＤランプの下面斜視図である。It is a bottom perspective view of an LED lamp. ＬＥＤランプの分解斜視図である。It is a disassembled perspective view of an LED lamp. 図２のＶ−Ｖ断面図である。It is VV sectional drawing of FIG. 筒状部の正面図である。It is a front view of a cylindrical part. 図６のＶＩＩ−ＶＩＩ断面図である。It is VII-VII sectional drawing of FIG. 図６のＶＩＩＩ−ＶＩＩＩ断面図である。It is VIII-VIII sectional drawing of FIG. 基板支持プレート及び筒状部を上方から見た平面図である。It is the top view which looked at the board | substrate support plate and the cylindrical part from upper direction. 図５の接続部及び筒状部接続部の近傍の拡大図である。It is an enlarged view of the vicinity of the connection part and cylindrical part connection part of FIG. ソケットが取り付けられた状態のＬＥＤランプの下面斜視図である。It is a bottom perspective view of the LED lamp in a state where a socket is attached. ソケットと口金との接続部を示す断面図である。It is sectional drawing which shows the connection part of a socket and a nozzle | cap | die. 拡径部側から見た緩み防止部材の平面図である。It is a top view of the loosening prevention member seen from the enlarged diameter part side. ソケット側から見た緩み防止部材の平面図である。It is a top view of the loosening prevention member seen from the socket side. 緩み防止部材の斜視図である。It is a perspective view of a loosening prevention member. 図１４のＸＶＩ−ＸＶＩ断面図である。It is XVI-XVI sectional drawing of FIG.

以下、本発明の実施の形態を、図面を参照しながら説明する。
なお、以下の実施形態では、発光素子を光源に備えるランプとして、ＬＥＤを光源に備えたＬＥＤランプを例示するが、本発明はこれに限定されるものではなく、例えば有機ＥＬ等の他の発光素子を光源に備えるランプにも適用可能である。
図１は、本実施形態に係るＬＥＤランプ２００の正面図である。図２は、ＬＥＤランプ２００を上方から見た平面図である。図３は、ＬＥＤランプ２００の下面斜視図である。図４は、ＬＥＤランプ２００の分解斜視図である。図５は、図２のＶ−Ｖ断面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following embodiments, an LED lamp having an LED as a light source is exemplified as a lamp having a light emitting element as a light source. However, the present invention is not limited to this, and other light emission such as an organic EL, for example. The present invention can also be applied to a lamp having an element as a light source.
FIG. 1 is a front view of an LED lamp 200 according to this embodiment. FIG. 2 is a plan view of the LED lamp 200 as viewed from above. FIG. 3 is a bottom perspective view of the LED lamp 200. FIG. 4 is an exploded perspective view of the LED lamp 200. 5 is a cross-sectional view taken along the line VV in FIG.

図１〜図５に示すように、ＬＥＤランプ２００は、上面の発光部２１０と、この発光部２１０に直交して下方に向かって延びる筒状部２３０と、筒状部２３０の終端２３０Ｂに設けられた口金３と、発光部２１０の裏面に設けられた複数の放熱フィン２２５と、筒状部２３０において口金３に隣接して設けられる緩み防止部材２６０とを備えている。
発光部２１０は、その上面２１０Ａの略全体から図１中の上方に向けて光を放射するものであり、図２に示すように、上面視で略円形状に形成されたグローブ２１２（カバー）を備える。
詳細には、発光部２１０は、図４に示すように、光源たる複数のＬＥＤ２１５（発光素子）と、これらのＬＥＤ２１５を実装したＬＥＤ基板（基板）２１１と、ＬＥＤ基板２１１を保持する基板支持プレート２２０（光源保持部）と、グローブ２１２とを備えている。グローブ２１２は、ＬＥＤ基板２１１を覆うカバーであり、ＬＥＤ２１５の光はグローブ２１２を透過して外側に照射される。 As shown in FIGS. 1 to 5, the LED lamp 200 is provided at a light emitting portion 210 on the upper surface, a tubular portion 230 that extends perpendicularly to the light emitting portion 210 and extends downward, and a terminal end 230 </ b> B of the tubular portion 230. And a plurality of radiating fins 225 provided on the back surface of the light emitting unit 210, and a loosening prevention member 260 provided adjacent to the base 3 in the cylindrical part 230.
The light emitting unit 210 emits light from substantially the entire upper surface 210A upward in FIG. 1, and as shown in FIG. 2, a globe 212 (cover) formed in a substantially circular shape when viewed from above. Is provided.
Specifically, as shown in FIG. 4, the light emitting unit 210 includes a plurality of LEDs 215 (light emitting elements) that are light sources, an LED substrate (substrate) 211 on which these LEDs 215 are mounted, and a substrate support plate that holds the LED substrate 211. 220 (light source holding unit) and a globe 212. The globe 212 is a cover that covers the LED substrate 211, and the light of the LED 215 passes through the globe 212 and is irradiated to the outside.

基板支持プレート２２０は、筒状部２３０よりも径が大きな略円形状に形成されており、ＬＥＤ基板２１１が表面に載置される円板状の基板載置部２２１と、筒状部２３０が接続される筒状部接続部２６１と、放熱フィン２２５とを一体に備える。基板支持プレート２２０は、高い放熱性を有する金属により形成され、本実施形態においては、アルミ合金をダイカスト法によって鋳造して形成される。また、基板支持プレート２２０は、例えば、マグネシウム合金を鋳造して形成されてもよい。
基板載置部２２１の表面は、ＬＥＤ基板２１１が載置される平坦な載置面２２１Ｃである。基板載置部２２１の径方向の中間部には、ねじ穴部２２１Ａ（図４）が周方向に略等間隔をあけて複数設けられており、ねじ穴部２２１Ａには、ＬＥＤ基板２１１を基板載置部２２１に固定するねじ２４２が締結される。 The substrate support plate 220 is formed in a substantially circular shape having a diameter larger than that of the cylindrical portion 230, and the disk-shaped substrate mounting portion 221 on which the LED substrate 211 is mounted on the surface and the cylindrical portion 230 are formed. The cylindrical part connection part 261 and the radiation fin 225 to be connected are integrally provided. The substrate support plate 220 is formed of a metal having high heat dissipation properties, and in this embodiment, is formed by casting an aluminum alloy by a die casting method. The substrate support plate 220 may be formed by casting a magnesium alloy, for example.
The surface of the substrate mounting part 221 is a flat mounting surface 221C on which the LED substrate 211 is mounted. A plurality of screw hole portions 221A (FIG. 4) are provided at substantially equal intervals in the circumferential direction at the intermediate portion in the radial direction of the substrate mounting portion 221, and the LED substrate 211 is mounted on the screw hole portion 221A. A screw 242 to be fixed to the mounting portion 221 is fastened.

基板載置部２２１の載置面２２１Ｃの外縁部には、ＬＥＤ基板２１１よりも大径な円環状の溝２２６が全周に亘って形成されている。溝２２６には、例えばシリコン等の弾性材料により構成される防水部材２２７が嵌め込まれる。
基板支持プレート２２０は、基板載置部２２１の外周部から径方向外側に延びる板状のカバー固定部２６２を複数備え、カバー固定部２６２には、グローブ２１２が固定されるボス部２６２Ａが形成されている。
グローブ２１２は、溝２２６を上方から覆う外周フランジ部２１４を外周部に備え、外周フランジ部２１４は、カバー固定部２６２に対応した位置に、さらに径方向外側に延びる固定部２１４ａを有する。グローブ２１２は、固定部２１４ａに挿通されてボス部２６２Ａに締結されるねじ２４１を介してカバー固定部２６２に固定される。この状態では、防水部材２２７は外周フランジ部２１４に圧縮されている。 An annular groove 226 having a larger diameter than the LED substrate 211 is formed on the outer edge portion of the mounting surface 221C of the substrate mounting portion 221 over the entire circumference. A waterproof member 227 made of an elastic material such as silicon is fitted into the groove 226.
The substrate support plate 220 includes a plurality of plate-like cover fixing portions 262 extending radially outward from the outer peripheral portion of the substrate mounting portion 221, and the cover fixing portion 262 is formed with a boss portion 262 A to which the globe 212 is fixed. ing.
The globe 212 includes an outer peripheral flange portion 214 that covers the groove 226 from above on the outer peripheral portion, and the outer peripheral flange portion 214 has a fixing portion 214 a that further extends radially outward at a position corresponding to the cover fixing portion 262. The globe 212 is fixed to the cover fixing portion 262 through a screw 241 that is inserted into the fixing portion 214a and fastened to the boss portion 262A. In this state, the waterproof member 227 is compressed by the outer peripheral flange portion 214.

ＬＥＤ２１５は、例えばＬＥＤ素子をパッケージ化してなるものであり、本実施形態では、ＬＥＤ２１５に白色ＬＥＤが用いられている。なお、ＬＥＤ２１５に白色以外の他の発光色のＬＥＤを用いても良いことは勿論である。
ＬＥＤ基板２１１は、円板状に形成されており、ＬＥＤ２１５は、ＬＥＤ基板２１１の表面である実装面の外周部に同心円状に複数並べて実装される。
ＬＥＤ基板２１１は、その裏面を基板支持プレート２２０の基板載置部２２１に当接させた状態で、ねじ２４２により固定されている。ＬＥＤ基板２１１の略中央には、ＬＥＤ２１５の電力供給用のリード線２６３が通される配線孔２１１Ａが形成されている。
ＬＥＤ基板２１１は、熱伝導性の高い、例えばアルミニウム材等の金属材料で構成されている。このため、ＬＥＤ２１５の発熱を効率良く基板支持プレート２２０の基板載置部２２１に伝熱でき、放熱フィン２２５から効果的に放熱させることができる。 The LED 215 is formed by packaging, for example, an LED element. In this embodiment, a white LED is used as the LED 215. Needless to say, the LED 215 may be a light emitting color LED other than white.
The LED substrate 211 is formed in a disk shape, and a plurality of LEDs 215 are mounted in a concentric manner on the outer peripheral portion of the mounting surface, which is the surface of the LED substrate 211.
The LED substrate 211 is fixed by screws 242 in a state where the back surface thereof is in contact with the substrate mounting portion 221 of the substrate support plate 220. A wiring hole 211 </ b> A through which the power supply lead 263 of the LED 215 is passed is formed substantially at the center of the LED substrate 211.
The LED substrate 211 is made of a metal material having a high thermal conductivity, such as an aluminum material. For this reason, the heat generated by the LED 215 can be efficiently transferred to the substrate mounting portion 221 of the substrate support plate 220, and can be effectively radiated from the radiation fins 225.

基板支持プレート２２０の筒状部接続部２６１は、基板載置部２２１の表面の中央部を口金３側に凹ませるようにして形成された凹部であり、円筒状の筒部２６４と、筒状部接続部２６１の底部を貫通する貫通孔２２３とを備える。貫通孔２２３には、筒状部２３０の始端２３０Ａが嵌合して接続される。   The cylindrical portion connecting portion 261 of the substrate support plate 220 is a concave portion formed so as to be recessed on the base 3 side of the center portion of the surface of the substrate mounting portion 221. The cylindrical cylindrical portion 264 and the cylindrical portion And a through hole 223 that penetrates the bottom of the part connection part 261. The starting end 230A of the cylindrical portion 230 is fitted and connected to the through hole 223.

放熱フィン２２５は、基板支持プレート２２０の基板載置部２２１の裏面に略直角に立設される薄板であり、各板は略同一形状に形成されている。放熱フィン２２５は、筒状部２３０の軸線を中心にして複数枚が筒状部接続部２６１の周囲に略放射状に配列されており、周方向に略等間隔をあけて配置されている。なお、放熱フィン２２５は、放射状に配置されるものに限定されず、互いに間隔をあけて配置されていればよい。
放熱フィン２２５の高さは、内端部２２５Ａを除き、径方向の略全体に亘って筒状部接続部２６１の深さに略等しい。内端部２２５Ａは、筒部２６４に近づくほど高さが小さくなるように傾斜して形成されている。
放熱フィン２２５は、径方向においては、筒状部接続部２６１の筒部２６４の近傍から外周側へ延び、基板支持プレート２２０の基板載置部２２１の外縁部２２１Ｂ（図５）を超えて外側に突出している。すなわち、放熱フィン２２５は、外縁部２２１Ｂよりも径方向の外側に突出する外端部２２５Ｂを有する。また、放熱フィン２２５の内端部２２５Ａと筒部２６４の外周面との間には、隙間２６５が設けられている。隙間２６５を設けることで、筒状部接続部２６１の周囲に空気を流通させることができる。 The heat radiating fins 225 are thin plates standing substantially perpendicular to the back surface of the substrate placement portion 221 of the substrate support plate 220, and the respective plates are formed in substantially the same shape. A plurality of radiating fins 225 are arranged substantially radially around the cylindrical portion connecting portion 261 around the axis of the cylindrical portion 230, and are arranged at substantially equal intervals in the circumferential direction. In addition, the radiation fin 225 is not limited to what is arrange | positioned radially, What is necessary is just to be arrange | positioned at intervals.
The height of the heat dissipating fin 225 is substantially equal to the depth of the cylindrical portion connecting portion 261 over substantially the entire radial direction except for the inner end portion 225A. The inner end portion 225 </ b> A is formed to be inclined so that the height decreases as it approaches the tube portion 264.
The radiating fins 225 extend in the radial direction from the vicinity of the cylindrical portion 264 of the cylindrical portion connecting portion 261 to the outer peripheral side, and beyond the outer edge portion 221B (FIG. 5) of the substrate mounting portion 221 of the substrate support plate 220. Protruding. That is, the radiation fin 225 has an outer end portion 225B that protrudes outward in the radial direction from the outer edge portion 221B. Further, a gap 265 is provided between the inner end 225 </ b> A of the radiating fin 225 and the outer peripheral surface of the cylindrical portion 264. By providing the gap 265, air can be circulated around the cylindrical portion connecting portion 261.

筒状部２３０の終端２３０Ｂには、口金３が冠着される。筒状部２３０は、絶縁性を有する、例えばポリカーボネイト等の樹脂材料を用いて形成されている。これにより、筒状部２３０と口金３との絶縁が図られている。この構成によれば、筒状部２３０を樹脂材料で成形することで、筒状部２３０の軽量化を図ることができる。
なお、筒状部２３０は、熱伝導性を有する金属で形成した部材と、絶縁性を有する材料から形成された部材とをインサート成型により形成する構成であっても良い。 A base 3 is attached to the end 230 </ b> B of the tubular portion 230. The cylindrical portion 230 is formed using a resin material having an insulating property such as polycarbonate. Thereby, insulation with the cylindrical part 230 and the nozzle | cap | die 3 is achieved. According to this structure, weight reduction of the cylindrical part 230 can be achieved by shape | molding the cylindrical part 230 with a resin material.
The cylindrical portion 230 may have a configuration in which a member formed of a metal having thermal conductivity and a member formed of an insulating material are formed by insert molding.

筒状部２３０の内部には、電気回路基板５０（図５）が、基板ホルダー５５に保持されて収められている。電気回路基板５０は、口金３側の端部で図示せぬリード線を通じて口金３と電気的に接続されている。基板ホルダー５５は、図４及び図５に示すように、電気回路基板５０を挟持した状態で、筒状部２３０内に挿入されて固定されている。
口金３は、既設の照明器具（不図示）のソケット２９０（図１１）に螺合するねじ山が切られた筒状のシェル６と、このシェル６の端部の頂部に絶縁部４を介して設けられたアイレット５とを備え、シェル６及びアイレット５が既存のソケットに装着可能な形状寸法に構成されている。これにより、当該ＬＥＤランプ２００は、天井や壁面に既設のソケットや、既存の電球を装着して使用するランプホルダー等（不図示）のソケットに装着でき、既存の電球の代替として使用できる。上記ソケットの例としては、例えばＥ２６型ソケットが挙げられる。 An electric circuit board 50 (FIG. 5) is held in a cylindrical holder 230 and held in a board holder 55. The electric circuit board 50 is electrically connected to the base 3 through a lead wire (not shown) at the end on the base 3 side. As shown in FIGS. 4 and 5, the substrate holder 55 is inserted and fixed in the cylindrical portion 230 with the electric circuit substrate 50 being sandwiched.
The base 3 includes a cylindrical shell 6 that is threaded into a socket 290 (FIG. 11) of an existing lighting fixture (not shown), and an insulating portion 4 at the top of the end of the shell 6. The shell 6 and the eyelet 5 are configured to have a shape and size that can be attached to an existing socket. Thereby, the LED lamp 200 can be mounted on an existing socket on the ceiling or wall surface, or a socket of a lamp holder or the like (not shown) that is used by mounting an existing light bulb, and can be used as an alternative to the existing light bulb. An example of the socket is an E26 type socket.

図６は、筒状部２３０の正面図である。図７は、図６のＶＩＩ−ＶＩＩ断面図である。図８は、図６のＶＩＩＩ−ＶＩＩＩ断面図である。
図６〜図８に示すように、筒状部２３０は、電気回路基板５０が収納される筒状部本体２６７と、口金３が固定される終端２３０Ｂと、緩み防止部材２６０が取り付けられる回転防止部材取付部２６８と、筒状部接続部２６１に接続される接続部２６９とを備える。
筒状部本体２６７は、断面正多角形状（本実施の形態では正八角形）に形成されており、筒状部２３０の軸方向において最も長さを占める部分である。また、筒状部本体２６７は、口金３側へ向けて先細るテーパー状に形成されている。終端２３０Ｂの底部には、電気回路基板５０から口金３に延びるリード線（不図示）が接続される孔２８５Ａ，２８５Ｂが形成されている。
回転防止部材取付部２６８は、断面略円形に形成されており、筒状部本体２６７と終端２３０Ｂとの間に形成されている。 FIG. 6 is a front view of the cylindrical portion 230. 7 is a cross-sectional view taken along the line VII-VII in FIG. 8 is a sectional view taken along line VIII-VIII in FIG.
As shown in FIGS. 6 to 8, the cylindrical portion 230 has a cylindrical portion main body 267 in which the electric circuit board 50 is accommodated, a terminal end 230 </ b> B to which the base 3 is fixed, and a rotation prevention member 260 to which the loosening prevention member 260 is attached. A member attaching portion 268 and a connecting portion 269 connected to the tubular portion connecting portion 261 are provided.
The cylindrical portion main body 267 is formed in a regular polygonal cross section (in the present embodiment, a regular octagon), and is the portion that occupies the longest length in the axial direction of the cylindrical portion 230. Moreover, the cylindrical part main body 267 is formed in the taper shape which tapers toward the nozzle | cap | die 3 side. Holes 285A and 285B to which lead wires (not shown) extending from the electric circuit board 50 to the base 3 are connected are formed at the bottom of the terminal end 230B.
The rotation preventing member attaching portion 268 is formed in a substantially circular cross section, and is formed between the cylindrical portion main body 267 and the terminal end 230B.

筒状部２３０は、分割式の金型（不図示）を用いた樹脂成型によって形成される。この金型のパーティングラインは、筒状部本体２６７の正八角形形状の角部２６７Ａの位置に合わせて設けられている。これにより、パーティングラインに起因して筒状部本体２６７の表面に現れる線が角部２６７Ａに重なるため、上記線が目立つことがなく、外観性を向上できる。また、筒状部本体２６７が多角形であるため、筒状部本体２６７を手で把持し易く、作業性が良い。   The cylindrical portion 230 is formed by resin molding using a split mold (not shown). The mold parting line is provided in accordance with the position of the regular octagonal corner portion 267A of the cylindrical portion main body 267. Thereby, since the line which appears on the surface of the cylindrical part main body 267 due to the parting line overlaps with the corner part 267A, the line does not stand out and the appearance can be improved. Moreover, since the cylindrical part main body 267 is polygonal, it is easy to grasp the cylindrical part main body 267 by hand, and workability is good.

接続部２６９は、筒状部２３０の始端２３０Ａに設けられている。
接続部２６９は、筒状部接続部２６１の貫通孔２２３の内周部に嵌合する第１の筒状部２７１と、第１の筒状部２７１よりも大径に形成される第２の筒状部２７２と、第１の筒状部２７１から径方向外側へ鍔状に突出して第１の筒状部２７１と第２の筒状部２７２とを連結する第２のフランジ部２７８と、第２の筒状部２７２から径方向外側へ鍔状に突出するフランジ部２３１とを備える。 The connecting portion 269 is provided at the starting end 230 </ b> A of the cylindrical portion 230.
The connecting portion 269 is a first cylindrical portion 271 that fits in the inner peripheral portion of the through-hole 223 of the cylindrical portion connecting portion 261, and a second diameter that is larger than the first cylindrical portion 271. A cylindrical portion 272, a second flange portion 278 that protrudes radially outward from the first cylindrical portion 271 and connects the first cylindrical portion 271 and the second cylindrical portion 272, And a flange portion 231 that protrudes radially outward from the second cylindrical portion 272.

フランジ部２３１は、筒状部２３０の最も始端側に設けられ、第２の筒状部２７２及び第２のフランジ部２７８は、筒状部２３０の軸方向において、フランジ部２３１と第１の筒状部２７１との間に設けられている。第２のフランジ部２７８の外径は、フランジ部２３１の外径よりも小さい。
第１の筒状部２７１は、断面略円形に形成されており、筒状部本体２６７に連続している。第２のフランジ部２７８の下面（口金３側の面）は、環状の当接面２７８Ａとなっている。
筒状部２３０において、第２のフランジ部２７８と第１の筒状部２７１との連結部の隅部２７９の曲率半径（いわゆる曲げ部の内Ｒ部の半径）は、フランジ部２３１と第２の筒状部２７２との連結部の隅部２８０の曲率半径よりも、大きく形成されている。 The flange portion 231 is provided on the most starting end side of the tubular portion 230, and the second tubular portion 272 and the second flange portion 278 are formed with the flange portion 231 and the first tube in the axial direction of the tubular portion 230. It is provided between the shape portion 271. The outer diameter of the second flange portion 278 is smaller than the outer diameter of the flange portion 231.
The first tubular portion 271 is formed in a substantially circular cross section and is continuous with the tubular portion main body 267. The lower surface (surface on the base 3 side) of the second flange portion 278 is an annular contact surface 278A.
In the tubular portion 230, the radius of curvature of the corner portion 279 of the connecting portion between the second flange portion 278 and the first tubular portion 271 (the radius of the R portion of the bending portion) is the same as that of the flange portion 231. It is formed larger than the radius of curvature of the corner portion 280 of the connecting portion with the cylindrical portion 272.

図９は、基板支持プレート２２０及び筒状部２３０を上方から見た平面図である。
図４、図６及び図９に示すように、フランジ部２３１の上面には、フランジ部２３１の内周部の周縁部に沿って軸方向に突出する壁部２３１Ａが形成されている。また、フランジ部２３１には、フランジ部２３１の上面と壁部２３１Ａの外側面とを連結するリブ２３１Ｂが複数設けられている。壁部２３１Ａは、壁部２３１Ａが設けられていない切り欠き部２３１Ｃを一対有している。
フランジ部２３１の上面には、フランジ部２３１を貫通するボス孔２３１Ｄが複数形成されており、ボス孔２３１Ｄには、フランジ部２３１を筒状部接続部２６１に固定するフランジ部固定ねじ２４３（図４）が挿通される。 FIG. 9 is a plan view of the substrate support plate 220 and the cylindrical portion 230 as viewed from above.
As shown in FIGS. 4, 6, and 9, a wall portion 231 </ b> A that protrudes in the axial direction along the peripheral edge portion of the inner peripheral portion of the flange portion 231 is formed on the upper surface of the flange portion 231. The flange portion 231 is provided with a plurality of ribs 231B that connect the upper surface of the flange portion 231 and the outer surface of the wall portion 231A. The wall portion 231A has a pair of cutout portions 231C in which the wall portion 231A is not provided.
A plurality of boss holes 231D penetrating the flange part 231 are formed on the upper surface of the flange part 231, and a flange part fixing screw 243 for fixing the flange part 231 to the tubular part connecting part 261 is formed in the boss hole 231D (FIG. 4) is inserted.

図１０は、図５の接続部２６９及び筒状部接続部２６１の近傍の拡大図である。
図１０に示すように、筒状部２３０は、貫通孔２２３に挿通され、フランジ部２３１及び第２のフランジ部２７８が筒状部接続部２６１に引っ掛けられるようにして基板支持プレート２２０に固定される。筒状部接続部２６１の筒部２６４は、筒状部２３０のフランジ部２３１及び第２のフランジ部２７８の形状に合わせて階段状に形成されている。
詳細には、筒状部接続部２６１は、基板載置部２２１の中央部を口金３側に窪ませた第１の凹部２７３と、第１の凹部２７３の中央部を口金３側に窪ませた第２の凹部２７４と、第２の凹部２７４の中央部から口金３側に延出する嵌合筒部２７５とを備える。貫通孔２２３は、嵌合筒部２７５の内周部により構成されている。 FIG. 10 is an enlarged view of the vicinity of the connection part 269 and the cylindrical part connection part 261 of FIG.
As shown in FIG. 10, the cylindrical portion 230 is inserted into the through hole 223, and is fixed to the substrate support plate 220 so that the flange portion 231 and the second flange portion 278 are hooked on the cylindrical portion connection portion 261. The The cylindrical part 264 of the cylindrical part connection part 261 is formed in a stepped manner in accordance with the shapes of the flange part 231 and the second flange part 278 of the cylindrical part 230.
Specifically, the cylindrical portion connecting portion 261 has a first recess 273 in which the center portion of the substrate mounting portion 221 is recessed toward the base 3 side, and a center portion of the first recess 273 is recessed toward the base 3 side. The second concave portion 274 and the fitting cylinder portion 275 extending from the central portion of the second concave portion 274 to the base 3 side are provided. The through hole 223 is configured by the inner peripheral part of the fitting cylinder part 275.

フランジ部２３１は、第１の凹部２７３に収容される。第１の凹部２７３の内径は、フランジ部２３１の外径よりもわずかに大きく形成されており、フランジ部２３１を受ける第１の凹部２７３の底部２７３Ａは、平坦に形成されている。貫通孔２２３の周縁部でもある底部２７３Ａには、フランジ部固定ねじ２４３が締結される固定穴部２７３Ｂ（図９）が複数形成されている。
フランジ部２３１と底部２７３Ａとの間には、平板状且つリング状の断熱部材２７６（断熱材）が介装される。断熱部材２７６は、例えば、不織布や、シリコンパッキン等が用いられる。断熱部材２７６を設けることで、基板支持プレート２２０とフランジ部２３１との間の断熱性を確保でき、基板支持プレート２２０から伝わる熱によってフランジ部２３１が劣化する等の影響を低減できる。さらに、断熱部材２７６は撓むことで防振部材としても機能するため、フランジ部２３１に作用する振動の影響も低減できる。 The flange portion 231 is accommodated in the first recess 273. The inner diameter of the first recess 273 is slightly larger than the outer diameter of the flange portion 231, and the bottom 273 </ b> A of the first recess 273 that receives the flange portion 231 is formed flat. A plurality of fixing hole portions 273B (FIG. 9) to which the flange portion fixing screws 243 are fastened are formed in the bottom portion 273A which is also the peripheral portion of the through hole 223.
A flat and ring-shaped heat insulating member 276 (heat insulating material) is interposed between the flange portion 231 and the bottom portion 273A. As the heat insulating member 276, for example, a nonwoven fabric, silicon packing, or the like is used. By providing the heat insulating member 276, heat insulation between the substrate support plate 220 and the flange portion 231 can be ensured, and the influence such as deterioration of the flange portion 231 due to heat transmitted from the substrate support plate 220 can be reduced. Furthermore, since the heat insulating member 276 functions as a vibration isolating member by bending, the influence of vibration acting on the flange portion 231 can be reduced.

第２の筒状部２７２及び第２のフランジ部２７８は、第２の凹部２７４に収容される。第２の凹部２７４の内径は、第２の筒状部２７２の外径よりもわずかに大きく形成されており、第２のフランジ部２７８の当接面２７８Ａを受ける第２の凹部２７４の底部２７４Ａは、平坦に形成されている。
第１の筒状部２７１の外周面には、弾性材料で構成されるリング状のシール部材２７７（防水パッキン）が嵌合されており、シール部材２７７は、当接面２７８Ａと底部２７４Ａとの間に圧縮された状態で介装されている。シール部材２７７は、例えば、ゴム等の素材からなるパッキンが用いられる。シール部材２７７を設けることで、基板支持プレート２２０と第２の筒状部２７２との間の防水性を確保でき、さらに、シール部材２７７は撓むことで防振部材としても機能するため、第２の筒状部２７２近傍に作用する振動の影響も低減できる。ここで、シール部材２７７は、シール性に加えて断熱性も備えたものであってもよい。すなわち、断熱材は、フランジ部２３１及び／又は第２のフランジ部２７８と基板支持プレート２２０との間に設けることができる。 The second cylindrical portion 272 and the second flange portion 278 are accommodated in the second recess 274. The inner diameter of the second recess 274 is slightly larger than the outer diameter of the second cylindrical portion 272, and the bottom 274A of the second recess 274 that receives the contact surface 278A of the second flange portion 278. Is formed flat.
A ring-shaped seal member 277 (waterproof packing) made of an elastic material is fitted to the outer peripheral surface of the first cylindrical portion 271, and the seal member 277 has a contact surface 278A and a bottom portion 274A. It is inserted in a compressed state. As the seal member 277, for example, a packing made of a material such as rubber is used. By providing the seal member 277, the waterproof property between the substrate support plate 220 and the second cylindrical portion 272 can be secured, and the seal member 277 also functions as a vibration isolating member by being bent. The influence of vibration acting in the vicinity of the second cylindrical portion 272 can also be reduced. Here, the sealing member 277 may have a heat insulating property in addition to the sealing property. That is, the heat insulating material can be provided between the flange portion 231 and / or the second flange portion 278 and the substrate support plate 220.

筒状部２３０を基板支持プレート２２０に接続する際には、まず、筒状部２３０の第１の筒状部２７１及びフランジ部２３１に、シール部材２７７及び断熱部材２７６がそれぞれ装着される。次いで、筒状部２３０が貫通孔２２３に通され、フランジ部２３１及び第２のフランジ部２７８が第１の凹部２７３及び第２の凹部２７４に引っ掛けられる。その後、フランジ部固定ねじ２４３（図４）が固定穴部２７３Ｂ（図９）に締結されることで、接続部２６９が筒状部接続部２６１に固定される。
また、図４に示すように、基板ホルダー５５は、フランジ部２３１の切り欠き部２３１Ｃ（図９）に通される橋架部（不図示）を上端に有し、この橋架部にフランジ部固定ねじ２４３が挿通されることで、フランジ部２３１に共締めされて固定される。 When connecting the cylindrical portion 230 to the substrate support plate 220, first, the seal member 277 and the heat insulating member 276 are respectively attached to the first cylindrical portion 271 and the flange portion 231 of the cylindrical portion 230. Next, the cylindrical portion 230 is passed through the through hole 223, and the flange portion 231 and the second flange portion 278 are hooked on the first recess portion 273 and the second recess portion 274. Thereafter, the flange portion fixing screw 243 (FIG. 4) is fastened to the fixing hole portion 273B (FIG. 9), whereby the connecting portion 269 is fixed to the cylindrical portion connecting portion 261.
Further, as shown in FIG. 4, the substrate holder 55 has a bridge portion (not shown) passed through the notch portion 231C (FIG. 9) of the flange portion 231 at the upper end, and a flange portion fixing screw is attached to the bridge portion. By inserting 243, the flange portion 231 is fastened together and fixed.

本実施の形態では、基板支持プレート２２０は金属で形成されているため、高い放熱性能が得られるものの、重量が大きい。基板支持プレート２２０に対しフランジ部固定ねじ２４３によって固定された筒状部２３０は、金属よりも強度が低くなり易い樹脂で形成されている。そのため、筒状部２３０は、フランジ部固定ねじ２４３が挿入されるボス孔２３１Ｄ（図９）に、基板支持プレート２２０の重量による負荷がかかり易い。また、樹脂材料により成形された筒状部２３０は、紫外線や振動等の外部要因により劣化し、強度が低下する場合がある。そして、これらの要因により、フランジ部２３１には、ボス孔２３１Ｄから割れが生じる可能性がある。   In the present embodiment, since the substrate support plate 220 is made of metal, high heat dissipation performance can be obtained, but the weight is large. The cylindrical portion 230 fixed to the substrate support plate 220 by the flange portion fixing screw 243 is formed of a resin whose strength is likely to be lower than that of metal. Therefore, the cylindrical portion 230 is likely to be subjected to a load due to the weight of the substrate support plate 220 on the boss hole 231D (FIG. 9) into which the flange portion fixing screw 243 is inserted. Moreover, the cylindrical part 230 shape | molded with the resin material may deteriorate by external factors, such as an ultraviolet-ray and a vibration, and intensity | strength may fall. Due to these factors, the flange portion 231 may be cracked from the boss hole 231D.

本願構成によれば、基板支持プレート２２０の貫通孔２２３に筒状部２３０を挿入し、貫通孔２２３の外周側の第１の凹部２７３の底部２７３Ａに筒状部２３０のフランジ部２３１を引っ掛けることで、筒状部２３０を基板支持プレート２２０に固定している。これにより、たとえボス孔２３１Ｄ近傍に劣化による割れが生じても、フランジ部２３１が引っ掛かるため、基板支持プレート２２０が筒状部２３０から離脱することがなく、接続機能が失われることを防止できる。また、フランジ部２３１が損傷したとしても、筒状部２３０の第２のフランジ部２７８が、第２の凹部２７４に引っ掛けられているため、基板支持プレート２２０が筒状部２３０から離脱することがなく、接続機能が失われることを防止できる。
また、第２のフランジ部２７８側の隅部２７９の曲率半径が、フランジ部２３１側の隅部２８０の曲率半径よりも、大きく形成されているため、第２のフランジ部２７８の強度が高い。このため、第２のフランジ部２７８の損傷を防止でき、第２のフランジ部２７８による接続機能を維持できる。 According to the configuration of the present application, the cylindrical portion 230 is inserted into the through hole 223 of the substrate support plate 220, and the flange portion 231 of the cylindrical portion 230 is hooked on the bottom portion 273 </ b> A of the first concave portion 273 on the outer peripheral side of the through hole 223. Thus, the cylindrical portion 230 is fixed to the substrate support plate 220. Thereby, even if a crack due to deterioration occurs in the vicinity of the boss hole 231D, the flange portion 231 is caught, so that the substrate support plate 220 is not detached from the cylindrical portion 230, and the connection function can be prevented from being lost. Further, even if the flange portion 231 is damaged, the second flange portion 278 of the cylindrical portion 230 is hooked on the second concave portion 274, so that the substrate support plate 220 may be detached from the cylindrical portion 230. Therefore, it is possible to prevent the connection function from being lost.
Further, since the radius of curvature of the corner portion 279 on the second flange portion 278 side is formed larger than the radius of curvature of the corner portion 280 on the flange portion 231 side, the strength of the second flange portion 278 is high. For this reason, the damage of the 2nd flange part 278 can be prevented, and the connection function by the 2nd flange part 278 can be maintained.

また、筒状部２３０のフランジ部２３１及び第２のフランジ部２７８は、基板載置部２２１を窪ませた第１の凹部２７３及び第２の凹部２７４に固定されるため、フランジ部２３１及び第２のフランジ部２７８が、基板載置部２２１に載置されたＬＥＤ基板２１１に直接触れることがない。これにより、樹脂材料により構成されるフランジ部２３１及び第２のフランジ部２７８が、ＬＥＤ基板２１１の熱抵抗となるのを防ぐことができ、ＬＥＤ基板２１１の熱を放熱フィン２２５から効率良く放熱できる。   Further, since the flange portion 231 and the second flange portion 278 of the cylindrical portion 230 are fixed to the first recess portion 273 and the second recess portion 274 that are recessed in the substrate mounting portion 221, the flange portion 231 and the second flange portion 274 are fixed. The second flange portion 278 does not directly touch the LED substrate 211 placed on the substrate placement portion 221. Thereby, it can prevent that the flange part 231 and the 2nd flange part 278 comprised with a resin material become thermal resistance of the LED board 211, and can thermally radiate the heat | fever of the LED board 211 from the radiation fin 225 efficiently. .

また、筒状部２３０をＬＥＤ基板２１１から離して筒状部接続部２６１内に配設するため、樹脂材から構成された筒状部２３０が、高温になるＬＥＤ基板２１１に直接触れることが無く、熱による変形や劣化などの不具合が筒状部２３０に生じることを防止できる。
また、基板支持プレート２２０は、基板載置部２２１、筒状部接続部２６１及び放熱フィン２２５が鋳造により一体に形成される。このため、基板支持プレート２２０の強度を高くしながら基板支持プレート２２０を容易に製造でき、さらに、一体化により熱抵抗が低減されるため、放熱フィン２２５から効果的に放熱することができる。 In addition, since the tubular portion 230 is disposed in the tubular portion connecting portion 261 apart from the LED substrate 211, the tubular portion 230 made of a resin material does not directly touch the LED substrate 211 that becomes high temperature. In addition, it is possible to prevent problems such as deformation and deterioration due to heat from occurring in the tubular portion 230.
In addition, the substrate support plate 220 includes a substrate mounting portion 221, a cylindrical portion connection portion 261, and a radiation fin 225 that are integrally formed by casting. Therefore, the substrate support plate 220 can be easily manufactured while increasing the strength of the substrate support plate 220, and further, heat resistance can be reduced by integration, so that heat can be effectively radiated from the radiation fins 225.

次に、放熱フィン２２５の周辺の構成について詳細に説明する。
図２、図５及び図９に示すように、基板載置部２２１の外縁部２２１Ｂ及びグローブ２１２の外周フランジ部２１４の外径は略等しく形成されており、平面視では、外周フランジ部２１４の外縁と外縁部２２１Ｂとは略重なる。
放熱フィン２２５の外端部２２５Ｂは、基板載置部２２１の外縁部２２１Ｂよりも径方向外側に突出し、グローブ２１２の外縁に対しても径方向外側に突出する。 Next, the configuration around the radiation fin 225 will be described in detail.
As shown in FIGS. 2, 5, and 9, the outer diameters of the outer edge portion 221 </ b> B of the substrate platform 221 and the outer peripheral flange portion 214 of the globe 212 are formed to be substantially equal. The outer edge and the outer edge portion 221B substantially overlap each other.
The outer end portion 225 </ b> B of the radiation fin 225 protrudes outward in the radial direction from the outer edge portion 221 </ b> B of the substrate platform 221, and also protrudes outward in the radial direction with respect to the outer edge of the globe 212.

図１〜図５に示すように、放熱フィン２２５は、外端部２２５Ｂの径方向の先端部２２５Ｃを周方向に連結して基板載置部２２１を外側から囲う筒状の連結部２８１を備える。連結部２８１は、平面視では、放熱フィン２２５と同等の厚さか、或いは、放熱フィン２２５よりも薄く形成される薄板であり、放熱フィンとしても機能する。放熱フィン２２５は、連結部２８１によって互いに連結されることで、強度が増加する。特に、最も外周側の先端部２２５Ｃに連結部２８１を設けたため、放熱フィン２２５の強度を効果的に増加させることができる。   As shown in FIGS. 1 to 5, the heat radiation fin 225 includes a cylindrical connecting portion 281 that connects the distal end portion 225 </ b> C of the outer end portion 225 </ b> B in the circumferential direction and surrounds the substrate mounting portion 221 from the outside. . The connecting portion 281 is a thin plate formed to have the same thickness as the heat radiation fin 225 or thinner than the heat radiation fin 225 in a plan view, and also functions as a heat radiation fin. The radiating fins 225 are connected to each other by the connecting portion 281, thereby increasing the strength. In particular, since the connecting portion 281 is provided at the outermost end portion 225C, the strength of the radiating fin 225 can be effectively increased.

連結部２８１は、先端部２２５Ｃに連結されており、放熱フィン２２５の上端２２５Ｄ（図４）は、連結部２８１の上縁２８１Ａよりもわずかに上方に突出する。また、連結部２８１は、放熱フィン２２５の高さ方向において、上下の中間部よりも上端２２５Ｄ側に設けられており、放熱フィン２２５の下端２２５Ｅ側には設けられていない。
放熱フィン２２５の外端部２２５Ｂの先端が連結部２８１で閉じられることで、基板載置部２２１の周囲には、隣接する放熱フィン２２５，２２５と、外縁部２２１Ｂと、連結部２８１とで区画される平面視で略矩形の開口２８２が複数形成されている。放熱フィン２２５の周囲を流れる気流は、開口２８２を通って筒状部２３０の軸方向に流れる。本実施の形態では、放熱フィン２２５の先端部２２５Ｃに連結部２８１を設けたため、連結部２８１が邪魔にならず、開口２８２を大きく形成できる。このため、開口２８２に気流をスムーズに流すことができ、効率良く放熱できる。 The connecting portion 281 is connected to the tip end portion 225C, and the upper end 225D (FIG. 4) of the radiating fin 225 protrudes slightly above the upper edge 281A of the connecting portion 281. Further, the connecting portion 281 is provided on the upper end 225D side with respect to the upper and lower intermediate portions in the height direction of the heat dissipating fins 225, and is not provided on the lower end 225E side of the heat dissipating fins 225.
By closing the tip of the outer end portion 225B of the heat dissipating fin 225 with the connecting portion 281, the substrate mounting portion 221 is surrounded by the adjacent heat dissipating fins 225, 225, the outer edge portion 221 B, and the connecting portion 281. A plurality of substantially rectangular openings 282 are formed in plan view. The airflow flowing around the radiating fin 225 flows in the axial direction of the cylindrical portion 230 through the opening 282. In the present embodiment, since the connecting portion 281 is provided at the tip portion 225C of the radiating fin 225, the connecting portion 281 does not get in the way and the opening 282 can be formed large. For this reason, an airflow can be smoothly flowed to the opening 282, and it can thermally radiate efficiently.

連結部２８１は、その筒形状の一部を切り欠いて開口２８２を外周側に開放させる切り欠き部２８３，２８３を有する。詳細には、切り欠き部２８３，２８３は、一対の切り欠き部２８３，２８３が互いに略対向する配置、すなわち、周方向に略１８０°異なる位置に設けられている。切り欠き部２８３，２８３が設けられた部分の開口２８２は、外周側に開放した開放部２８４，２８４となる。つまり、連結部２８１は、全ての放熱フィン２２５の先端部２２５Ｃを繋ぐのではなく、一部の放熱フィン２２５を除き、隣接する放熱フィン２２５の先端部２２５Ｃ同士を連結している。   The connecting portion 281 has cutout portions 283 and 283 that cut out a part of the cylindrical shape to open the opening 282 to the outer peripheral side. Specifically, the notch portions 283 and 283 are provided in such a manner that the pair of notch portions 283 and 283 are substantially opposed to each other, that is, at a position different by approximately 180 ° in the circumferential direction. The opening 282 in the portion where the notches 283 and 283 are provided becomes open portions 284 and 284 that are open to the outer peripheral side. That is, the connecting portion 281 does not connect the front end portions 225C of all the heat dissipating fins 225, but connects the front end portions 225C of the adjacent heat dissipating fins 225 except for some of the heat dissipating fins 225.

開放部２８４，２８４は、カバー固定部２６２と重ならない箇所に設けられている。開放部２８４，２８４には、外周側からも気流が流れるため、開放部２８４の放熱フィン２２５によって効果的に放熱できる。
また、開放部２８４，２８４は、ＬＥＤランプ２００を組み立てる際に、基板支持プレート２２０を位置決めする冶具（不図示）が嵌合する位置決め部として使用される。このため、専用の位置決め部を設ける必要が無く、構造を簡略化できる。また、上記冶具を用いない場合であっても、開放部２８４，２８４を基準位置の目印として位置決めすることができる。 The opening portions 284 and 284 are provided at locations that do not overlap the cover fixing portion 262. Since airflow also flows from the outer peripheral side to the open portions 284 and 284, heat can be effectively radiated by the radiation fins 225 of the open portion 284.
The open portions 284 and 284 are used as positioning portions into which a jig (not shown) for positioning the substrate support plate 220 is fitted when the LED lamp 200 is assembled. For this reason, it is not necessary to provide a dedicated positioning part, and the structure can be simplified. Even if the jig is not used, the open portions 284 and 284 can be positioned as the reference position marks.

グローブ２１２の外周フランジ部２１４が固定されるカバー固定部２６２は、一部の開口２８２を塞ぐように、隣接する外端部２２５Ｂ，２２５Ｂの上端２２５Ｄに設けられている。カバー固定部２６２は、周方向に略等間隔で複数配置されており、開口２８２は、隣接するカバー固定部２６２，２６２の間に配置されている。
カバー固定部２６２の外縁は、連結部２８１の上縁２８１Ａに連結されている。このため、カバー固定部２６２の剛性を連結部２８１によって増加させることができ、グローブ２１２をカバー固定部２６２に強固に安定して固定できる。 The cover fixing portion 262 to which the outer peripheral flange portion 214 of the globe 212 is fixed is provided at the upper end 225D of the adjacent outer end portions 225B and 225B so as to block a part of the openings 282. A plurality of cover fixing portions 262 are arranged at substantially equal intervals in the circumferential direction, and the opening 282 is arranged between adjacent cover fixing portions 262 and 262.
The outer edge of the cover fixing portion 262 is connected to the upper edge 281A of the connecting portion 281. For this reason, the rigidity of the cover fixing portion 262 can be increased by the connecting portion 281, and the globe 212 can be firmly and stably fixed to the cover fixing portion 262.

図３に示すように、ねじ穴部２２１Ａ及びボス部２６２Ａは、平面視で放熱フィン２２５に重なる位置に配置されており、ねじ穴部２２１Ａ及びボス部２６２Ａの底部は、基板載置部２２１の裏面から下方に突出して放熱フィン２２５に一体的に形成されている。このように、ねじ穴部２２１Ａ及びボス部２６２Ａを放熱フィン２２５と一体的に設けたため、ねじ穴部２２１Ａ及びボス部２６２Ａの底部が放熱フィン２２５，２２５の間の流路を塞ぐことがない。このため、放熱フィン２２５に気流をスムーズに流すことができ、放熱性が良い。また、ねじ穴部２２１Ａ及びボス部２６２Ａの底部が放熱フィン２２５に隠れて目立たなくなるため、外観性が良い。   As shown in FIG. 3, the screw hole portion 221A and the boss portion 262A are arranged at positions overlapping the heat dissipating fins 225 in plan view, and the bottom portions of the screw hole portion 221A and the boss portion 262A It protrudes downward from the back surface and is integrally formed with the radiation fin 225. Thus, since the screw hole portion 221A and the boss portion 262A are provided integrally with the heat radiation fin 225, the bottom portions of the screw hole portion 221A and the boss portion 262A do not block the flow path between the heat radiation fins 225 and 225. For this reason, an airflow can be smoothly flowed to the radiation fin 225, and heat dissipation is good. In addition, the bottom of the screw hole portion 221A and the boss portion 262A is hidden by the heat radiating fins 225, so that the appearance is good.

連結部２８１は、基板支持プレート２２０の鋳造の際に、放熱フィン２２５と一体成形される。このため、放熱フィン２２５と連結部２８１との熱抵抗を小さくでき、高い放熱性が得られるとともに、高い強度が得られる。
また、基板支持プレート２２０の鋳造の際に、湯が連結部２８１を介して放熱フィン２２５に流れ、放熱フィン２２５に湯を行き渡らせ易いため、鋳造性が良い。 The connecting portion 281 is integrally formed with the heat radiation fin 225 when the substrate support plate 220 is cast. For this reason, the thermal resistance between the radiating fin 225 and the connecting portion 281 can be reduced, high heat dissipation can be obtained, and high strength can be obtained.
Further, when the substrate support plate 220 is cast, hot water flows to the heat radiating fins 225 via the connecting portions 281, and the hot water is easily distributed to the heat radiating fins 225, so that the castability is good.

次に、緩み防止部材２６０の周辺の構成について詳細に説明する。
図１１は、ソケット２９０が取り付けられた状態のＬＥＤランプ２００の下面斜視図である。図１２は、ソケット２９０と口金３との接続部を示す断面図である。
図１１及び図１２に示すように、ソケット２９０は、一端が開口した容器状に形成されており、有底円筒型のソケット本体部２９１と、口金３が挿入される接続用開口２９２とを有する。ソケット本体部２９１内には、口金３が締結される雌ねじ部としての受金（不図示）が設けられている。ソケット２９０は、例えば、底部が天井に設置されており、接続用開口２９２を介して接続されたＬＥＤランプ２００は下方を照らすように設置される。 Next, the configuration around the loosening prevention member 260 will be described in detail.
FIG. 11 is a bottom perspective view of the LED lamp 200 with the socket 290 attached. FIG. 12 is a cross-sectional view showing a connection portion between the socket 290 and the base 3.
As shown in FIGS. 11 and 12, the socket 290 is formed in a container shape having an open end, and has a bottomed cylindrical socket body 291 and a connection opening 292 into which the base 3 is inserted. . A socket (not shown) as a female screw portion to which the base 3 is fastened is provided in the socket main body portion 291. For example, the socket 290 has a bottom portion installed on the ceiling, and the LED lamp 200 connected through the connection opening 292 is installed so as to illuminate the lower side.

図４及び図１２に示すように、筒状部２３０における回転防止部材取付部２６８の発光部２１０側の端には、径方向に鍔状に突出する拡径部２９３が形成されている。拡径部２９３は、一部を切り欠くようにして形成された一対の溝部２９３Ａを備える。
緩み防止部材２６０は、回転防止部材取付部２６８に外周に嵌合されて取り付けられ、拡径部２９３とソケット２９０の接続用開口２９２の周縁部２９２Ａとの間に圧縮された状態で設けられる。 As shown in FIGS. 4 and 12, an enlarged-diameter portion 293 that protrudes in the radial direction in a bowl shape is formed at the end of the anti-rotation member attaching portion 268 on the light emitting portion 210 side in the tubular portion 230. The enlarged diameter portion 293 includes a pair of groove portions 293A formed so as to be partially cut away.
The loosening prevention member 260 is fitted and attached to the outer periphery of the rotation prevention member attaching portion 268, and is provided in a compressed state between the enlarged diameter portion 293 and the peripheral edge portion 292A of the connection opening 292 of the socket 290.

図１３は、拡径部２９３側から見た緩み防止部材２６０の平面図である。図１４は、ソケット２９０側から見た緩み防止部材２６０の平面図である。図１５は、緩み防止部材２６０の斜視図である。図１６は、図１４のＸＶＩ−ＸＶＩ断面図である。
図１２〜図１６に示すように、緩み防止部材２６０は、筒状部２３０に対して同軸の位置関係で装着されるリング状部材である。緩み防止部材２６０は、平面視で略円形のリング本体部２９４と、リング本体部２９４の中央に形成され、回転防止部材取付部２６８に嵌合する嵌合孔部２９５とを有する。
嵌合孔部２９５の内周面には、全周に亘って径方向内側に突出する環状の突起部２９５Ａが形成されている。突起部２９５Ａは、嵌合孔部２９５の軸方向に複数形成されている。 FIG. 13 is a plan view of the loosening prevention member 260 viewed from the enlarged diameter portion 293 side. FIG. 14 is a plan view of the loosening prevention member 260 viewed from the socket 290 side. FIG. 15 is a perspective view of the loosening prevention member 260. 16 is a cross-sectional view taken along the line XVI-XVI in FIG.
As shown in FIGS. 12 to 16, the loosening prevention member 260 is a ring-shaped member that is attached to the cylindrical portion 230 in a coaxial positional relationship. The loosening prevention member 260 includes a ring body portion 294 that is substantially circular in plan view, and a fitting hole portion 295 that is formed at the center of the ring body portion 294 and fits into the rotation prevention member mounting portion 268.
On the inner peripheral surface of the fitting hole 295, an annular protrusion 295A that protrudes radially inward over the entire periphery is formed. A plurality of protrusions 295 </ b> A are formed in the axial direction of the fitting hole 295.

リング本体部２９４は、拡径部２９３の下面に当接するランプ側当接面２９６と、ランプ側当接面２９６の裏面側で、ソケット２９０の周縁部２９２Ａに当接するソケット側当接面２９７（当接部）とを有する。
リング本体部２９４の外周部においてランプ側当接面２９６の側の角部には、略４５°の面取り部２９８が形成されている。面取り部２９８のランプ側当接面２９６側の端は、リング本体部２９４の厚さ方向の中間部よりもランプ側当接面２９６側に位置する。
ランプ側当接面２９６において嵌合孔部２９５の周縁部には、リング本体部２９４の軸方向に突出する凸部２９９（係合部）が一対形成されている。凸部２９９は、筒状部２３０の拡径部２９３の溝部２９３Ａに係合し、緩み防止部材２６０の回転を規制する。 The ring body 294 includes a lamp-side contact surface 296 that contacts the lower surface of the enlarged diameter portion 293, and a socket-side contact surface 297 that contacts the peripheral portion 292A of the socket 290 on the back side of the lamp-side contact surface 296. Abutting portion).
A chamfered portion 298 of approximately 45 ° is formed at the corner on the lamp-side contact surface 296 side in the outer peripheral portion of the ring main body portion 294. An end of the chamfered portion 298 on the lamp side contact surface 296 side is located closer to the lamp side contact surface 296 than an intermediate portion in the thickness direction of the ring main body portion 294.
A pair of convex portions 299 (engaging portions) protruding in the axial direction of the ring main body portion 294 are formed on the peripheral edge portion of the fitting hole portion 295 on the lamp side contact surface 296. The convex part 299 engages with the groove part 293 </ b> A of the enlarged diameter part 293 of the cylindrical part 230 and restricts the rotation of the loosening prevention member 260.

リング本体部２９４のソケット側当接面２９７には、平面視において嵌合孔部２９５側へ先細る略台形状の穴部３００が、リング本体部２９４の周方向に略等間隔で複数形成されている。穴部３００の深さは、リング本体部２９４の厚さの略半分まで達している。
穴部３００が形成されることで、ソケット側当接面２９７側には、嵌合孔部２９５の内周面に沿って延びる環状の内周壁部３０１と、リング本体部２９４の外周に沿って延びる環状の外周壁部３０２と、内周壁部３０１と外周壁部３０２とを連結する連結壁部３０３（回転防止手段）とが形成されている。外周壁部３０２及び内周壁部３０１は、ソケット側当接面２９７側におけるリング本体部２９４の外周部及び嵌合孔部２９５の一部をそれぞれ構成している。 The socket-side contact surface 297 of the ring body 294 is formed with a plurality of substantially trapezoidal hole portions 300 that taper toward the fitting hole 295 in plan view at substantially equal intervals in the circumferential direction of the ring body 294. ing. The depth of the hole 300 reaches approximately half of the thickness of the ring main body 294.
By forming the hole portion 300, the socket-side contact surface 297 side has an annular inner peripheral wall portion 301 extending along the inner peripheral surface of the fitting hole portion 295 and an outer periphery of the ring main body portion 294. An annular outer peripheral wall 302 that extends, and a connection wall 303 (rotation preventing means) that connects the inner peripheral wall 301 and the outer peripheral wall 302 are formed. The outer peripheral wall portion 302 and the inner peripheral wall portion 301 respectively constitute an outer peripheral portion of the ring main body portion 294 and a part of the fitting hole portion 295 on the socket side contact surface 297 side.

連結壁部３０３は、嵌合孔部２９５を中心として放射状に配置される板状の部材であり、内周壁部３０１と外周壁部３０２とを径方向に連結する。また、連結壁部３０３は、穴部３００の底面から立設された板状の凸状部である。
連結壁部３０３の厚さは、穴部３００の周方向の幅に比して小さく形成されている。また、連結壁部３０３の厚さは、内周壁部３０１及び外周壁部３０２の厚さよりも小さい。連結壁部３０３は薄板であるため、比較的容易に変形する。連結壁部３０３及び内周壁部３０１の高さは、外周壁部３０２よりも一段低く形成されている。
外周壁部３０２の径は、ソケット２９０の周縁部２９２Ａの径よりも大きく、内周壁部３０１の径は、ソケット２９０の周縁部２９２Ａの径よりも小さい。ソケット２９０がＬＥＤランプ２００に取り付けられた状態では、連結壁部３０３の上端が周縁部２９２Ａに当接する。 The connecting wall 303 is a plate-like member that is arranged radially with the fitting hole 295 as the center, and connects the inner peripheral wall 301 and the outer peripheral wall 302 in the radial direction. The connecting wall 303 is a plate-like convex portion that is erected from the bottom surface of the hole 300.
The thickness of the connecting wall 303 is smaller than the circumferential width of the hole 300. Further, the thickness of the connecting wall 303 is smaller than the thickness of the inner peripheral wall 301 and the outer peripheral wall 302. Since the connecting wall part 303 is a thin plate, it deforms relatively easily. The height of the connecting wall portion 303 and the inner peripheral wall portion 301 is formed to be one step lower than that of the outer peripheral wall portion 302.
The diameter of the outer peripheral wall portion 302 is larger than the diameter of the peripheral portion 292A of the socket 290, and the diameter of the inner peripheral wall portion 301 is smaller than the diameter of the peripheral portion 292A of the socket 290. In a state where the socket 290 is attached to the LED lamp 200, the upper end of the connecting wall portion 303 abuts on the peripheral edge portion 292A.

穴部３００の底部において内周壁部３０１側の隅部には、斜面状の肉盛り部３００Ａが形成されている。肉盛り部３００Ａを設けることで、連結壁部３０３を設けた構成としながら、緩み防止部材２６０の剛性が確保されている。
緩み防止部材２６０は、例えば、シリコンゴム等の比較的大きな弾性を有する樹脂製の弾性材料で構成される。緩み防止部材２６０は、連結壁部３０３を含む全体が、樹脂成形によって一体成型される。 In the bottom of the hole 300, a sloped portion 300A is formed at the corner on the inner peripheral wall 301 side. By providing the build-up portion 300A, the rigidity of the loosening prevention member 260 is ensured while the connection wall portion 303 is provided.
The loosening prevention member 260 is made of, for example, a resin elastic material having a relatively large elasticity such as silicon rubber. The entire slack prevention member 260 including the connecting wall 303 is integrally formed by resin molding.

ＬＥＤランプ２００をソケット２９０に取り付ける際には、ＬＥＤランプ２００の口金３がソケット２９０の接続用開口２９２に挿入され、ＬＥＤランプ２００が図１４中の締結方向Ｆに回転されることで、口金３がソケット２９０の受金（不図示）に締結される。
ＬＥＤランプ２００がソケット２９０に締め込まれて行くと、緩み防止部材２６０は筒状部２３０と一体に回転し、連結壁部３０３がソケット２９０の周縁部２９２Ａに当接する。詳細には、ＬＥＤランプ２００の締め込みに伴って、連結壁部３０３は、ソケット２９０の周縁部２９２Ａに当接して圧縮されながら回転し、締結方向Ｆとは反対の反対方向Ｌに向く力を周縁部２９２Ａから受ける。反対方向Ｌの力を受けると、各連結壁部３０３は、連結壁部３０３の基端部３０３Ａを支点として反対方向Ｌに倒れるように変形する。 When the LED lamp 200 is attached to the socket 290, the base 3 of the LED lamp 200 is inserted into the connection opening 292 of the socket 290, and the LED lamp 200 is rotated in the fastening direction F in FIG. Is fastened to a socket 290 (not shown).
When the LED lamp 200 is tightened into the socket 290, the loosening prevention member 260 rotates integrally with the cylindrical portion 230, and the connecting wall portion 303 comes into contact with the peripheral edge portion 292A of the socket 290. Specifically, as the LED lamp 200 is tightened, the connecting wall 303 rotates while being compressed in contact with the peripheral edge 292A of the socket 290, and exerts a force in the opposite direction L opposite to the fastening direction F. Received from the peripheral edge 292A. When receiving the force in the opposite direction L, each connecting wall portion 303 deforms so as to fall in the opposite direction L with the base end portion 303A of the connecting wall portion 303 as a fulcrum.

すなわち、ＬＥＤランプ２００の締結に伴い、連結壁部３０３は、軸方向に圧縮されながら反対方向Ｌに曲げられて行く。ＬＥＤランプ２００がソケット２９０に完全に締結されて連結壁部３０３が所定量だけ変形した状態（以下、この状態を回転防止状態と呼ぶ）では、連結壁部３０３の変形は、弾性変形及び塑性変形が両方存在している。また、緩み防止部材２６０は、回転防止状態では、主として連結壁部３０３が大きく変形し、外観上は、外周壁部３０２には大きな変形は見られない。   That is, as the LED lamp 200 is fastened, the connecting wall portion 303 is bent in the opposite direction L while being compressed in the axial direction. In a state where the LED lamp 200 is completely fastened to the socket 290 and the connecting wall portion 303 is deformed by a predetermined amount (hereinafter, this state is referred to as an anti-rotation state), the deformation of the connecting wall portion 303 is elastic deformation and plastic deformation. There are both. Further, the loosening prevention member 260 mainly deforms the connecting wall 303 largely in the rotation preventing state, and the outer wall 302 is not greatly deformed in appearance.

本実施の形態では、緩み防止部材２６０が回転防止状態とされると、変形している連結壁部３０３の反発力が発生し、この反発力がソケット２９０の周縁部２９２Ａに作用してＬＥＤランプ２００の締結の緩みの抵抗となる。すなわち、連結壁部３０３は、ＬＥＤランプ２００の締結に伴って、ＬＥＤランプ２００の緩み方向の回転を抑制するように変形する。このため、ＬＥＤランプ２００の緩み方向の回転を防止でき、ＬＥＤランプ２００の締結が振動等によって緩んでしまうことを防止できる。
また、緩み防止部材２６０は、連結壁部３０３が圧縮されるに伴って、嵌合孔部２９５が径方向に収縮し、嵌合孔部２９５が回転防止部材取付部２６８の外周面に密着することによっても、ＬＥＤランプ２００の緩み方向の回転を防止する。 In the present embodiment, when the loosening prevention member 260 is set in the rotation prevention state, a repulsive force of the deformed connecting wall portion 303 is generated, and this repulsive force acts on the peripheral portion 292A of the socket 290 to cause the LED lamp. It becomes resistance to loosening of 200 fastenings. That is, the connecting wall 303 is deformed so as to suppress the rotation of the LED lamp 200 in the loosening direction as the LED lamp 200 is fastened. For this reason, rotation of the LED lamp 200 in the loosening direction can be prevented, and the fastening of the LED lamp 200 can be prevented from loosening due to vibration or the like.
Further, in the loosening prevention member 260, as the connecting wall 303 is compressed, the fitting hole portion 295 contracts in the radial direction, and the fitting hole portion 295 comes into close contact with the outer peripheral surface of the rotation preventing member attaching portion 268. This also prevents the LED lamp 200 from rotating in the loosening direction.

さらに、緩み防止部材２６０の凸部２９９が拡径部２９３の溝部２９３Ａに係合し、緩み防止部材２６０の回転が規制されるため、ＬＥＤランプ２００を締結して行く際に、緩み防止部材２６０を確実にＬＥＤランプ２００と一体に回転させることができる。このため、連結壁部３０３を効果的に変形させることができ、ＬＥＤランプ２００の緩み方向の回転を防止できる。
また、ＬＥＤランプ２００をソケット２９０に締結して行く際に、連結壁部３０３が徐々に変形して行き、ＬＥＤランプ２００を締結方向Ｆに回転させるために必要な力も徐々に増加する。このため、例えば、連結壁部３０３を備えていない平板状のパッキンを用いた場合に比して、作業者が締結の状態を認識し易い。このため、ＬＥＤランプ２００が過大な締め付け力で締結されてしまうことを防止できる。
また、弾性材料で構成された緩み防止部材２６０をソケット２９０とＬＥＤランプ２００との間に介装するため、防振効果が得られ、ＬＥＤランプ２００の振動を低減できる。 Furthermore, since the convex portion 299 of the loosening prevention member 260 engages with the groove portion 293A of the enlarged diameter portion 293 and the rotation of the loosening prevention member 260 is restricted, when the LED lamp 200 is fastened, the loosening prevention member 260 is used. Can be reliably rotated integrally with the LED lamp 200. For this reason, the connection wall part 303 can be deformed effectively, and the rotation of the LED lamp 200 in the loosening direction can be prevented.
Further, when the LED lamp 200 is fastened to the socket 290, the connecting wall portion 303 is gradually deformed, and the force necessary to rotate the LED lamp 200 in the fastening direction F is also gradually increased. For this reason, compared with the case where the flat packing which is not equipped with the connection wall part 303 is used, for example, it is easy for an operator to recognize the fastening state. For this reason, it is possible to prevent the LED lamp 200 from being fastened with an excessive tightening force.
Further, since the loosening prevention member 260 made of an elastic material is interposed between the socket 290 and the LED lamp 200, a vibration isolation effect is obtained and the vibration of the LED lamp 200 can be reduced.

以上説明したように、本発明を適用した実施の形態によれば、筒状部２３０は、貫通孔２２３に挿入される第１の筒状部２７１と、第１の筒状部２７１とフランジ部２３１との間に設けられ、第１の筒状部２７１よりも大径の第２のフランジ部２７８とを備え、第１の凹部２７３には、第１の凹部２７３よりも小径の第２の凹部２７４が設けられ、第２のフランジ部２７８は、第２の凹部２７４に収容される。このため、フランジ部２３１が損傷したとしても、第２のフランジ部２７８が第２の凹部２７４に収容されて引っ掛かっているため、基板支持プレート２２０が筒状部２３０から脱落することを防止できる。   As described above, according to the embodiment to which the present invention is applied, the cylindrical portion 230 includes the first cylindrical portion 271 to be inserted into the through hole 223, the first cylindrical portion 271 and the flange portion. 231 and a second flange portion 278 having a diameter larger than that of the first cylindrical portion 271, and the second recess portion 273 has a second diameter smaller than that of the first recess portion 273. A recess 274 is provided, and the second flange portion 278 is accommodated in the second recess 274. For this reason, even if the flange portion 231 is damaged, the second flange portion 278 is housed and caught in the second recess 274, so that the substrate support plate 220 can be prevented from falling off the cylindrical portion 230.

また、フランジ部２３１が設けられる第２の筒状部２７２と第１の筒状部２７１とを連結する第２のフランジ部２７８によって、簡単な構造で基板支持プレート２２０の脱落を防止できる。
また、第２のフランジ部２７８と第１の筒状部２７１との連結部の隅部２７９の曲率半径は、フランジ部２３１と第２の筒状部２７２との連結部の隅部２８０の曲率半径よりも大きいため、第２のフランジ部２７８の強度が大きくなる。このため、第２のフランジ部２７８によって、筒状部２３０からの基板支持プレート２２０の脱落を効果的に防止できる。 Further, the second flange portion 278 that connects the second cylindrical portion 272 provided with the flange portion 231 and the first cylindrical portion 271 can prevent the substrate support plate 220 from falling off with a simple structure.
Further, the radius of curvature of the corner portion 279 of the connecting portion between the second flange portion 278 and the first cylindrical portion 271 is the curvature of the corner portion 280 of the connecting portion between the flange portion 231 and the second cylindrical portion 272. Since it is larger than the radius, the strength of the second flange portion 278 is increased. For this reason, the second flange portion 278 can effectively prevent the substrate support plate 220 from falling off the cylindrical portion 230.

さらに、第２のフランジ部２７８と第２の凹部２７４との間に設けられるシール部材２７７によって、防水性を確保できるとともに、防振効果も得られる。
また、フランジ部２３１と基板載置部２２１の第１の凹部２７３との間に設けられる断熱部材２７６によって、基板載置部２２１からフランジ部２３１に伝わる熱を低減でき、フランジ部２３１の熱による劣化を抑制できる。
また、フランジ部２３１がねじ止めの箇所であるボス孔２３１Ｄで損傷したとしても、ボス孔２３１Ｄ以外のフランジ部２３１の部分、及び、第２のフランジ部２７８によって、筒状部２３０からの基板支持プレート２２０の脱落を防止できる。 Furthermore, the sealing member 277 provided between the second flange portion 278 and the second recess 274 can ensure waterproofness and also provide a vibration proofing effect.
Further, the heat transmitted from the substrate mounting portion 221 to the flange portion 231 can be reduced by the heat insulating member 276 provided between the flange portion 231 and the first concave portion 273 of the substrate mounting portion 221, and the heat of the flange portion 231 can be reduced. Deterioration can be suppressed.
Further, even if the flange portion 231 is damaged by the boss hole 231D which is a screwing location, the portion of the flange portion 231 other than the boss hole 231D and the second flange portion 278 support the substrate from the cylindrical portion 230. Dropping of the plate 220 can be prevented.

また、本発明を適用した実施の形態によれば、ＬＥＤ２１５を実装したＬＥＤ基板２１１を保持する基板載置部２２１と、基板載置部２２１の裏面から延びる筒状部２３０と、基板載置部２２１の裏面に、筒状部２３０の周方向に間隔をあけて設けられた複数の放熱フィン２２５と、放熱フィン２２５同士を連結する連結部２８１と、を備え、放熱フィン２２５は、基板載置部２２１よりも外側に突出した外端部２２５Ｂを有し、連結部２８１は、放熱フィン２２５の外端部２２５Ｂの先端部２２５Ｃ同士を連結する。このため、放熱フィン２２５の外端部２２５Ｂの先端部２２５Ｃ同士を連結する連結部２８１によって放熱フィン２２５の強度を増加させることができるとともに、放熱フィン２２５と連結部２８１とにより形成される開口２８２を大きくでき、この開口２８２には空気を効率良く流すことができる。従って、放熱フィン２２５の強度を増加させながら、高い放熱効率を得ることができる。   Moreover, according to the embodiment to which the present invention is applied, the substrate mounting portion 221 that holds the LED substrate 211 on which the LED 215 is mounted, the cylindrical portion 230 that extends from the back surface of the substrate mounting portion 221, and the substrate mounting portion 221 is provided with a plurality of heat radiation fins 225 provided at intervals in the circumferential direction of the cylindrical portion 230 and a connection portion 281 for connecting the heat radiation fins 225 to each other. The outer end portion 225 </ b> B protrudes outward from the portion 221, and the connecting portion 281 connects the end portions 225 </ b> C of the outer end portion 225 </ b> B of the heat radiating fin 225. For this reason, the strength of the radiation fin 225 can be increased by the connecting portion 281 that connects the front end portions 225C of the outer end portions 225B of the radiation fin 225, and the opening 282 formed by the radiation fin 225 and the connecting portion 281. The air can be efficiently flowed through the opening 282. Therefore, high heat radiation efficiency can be obtained while increasing the strength of the heat radiation fin 225.

また、基板載置部２２１と放熱フィン２２５と連結部２８１とは、一体成型されているため、熱抵抗が小さくなって高い放熱効率を得られるとともに、高い強度が得られる。
また、連結部２８１は、放熱フィン２２５の一部を除き連結するため、連結部２８１に連結されておらず開放している一部の放熱フィン２２５の間に径方向の外側から風を流して高い放熱効率を得られるとともに、開放した開口２８２である開放部２８４を位置決め等の目印としたり、開放部２８４を位置決め冶具等の嵌合部としたりすることができ、組み立て性を向上できる。
さらに、基板載置部２２１の表側を覆うグローブ２１２を固定するカバー固定部２６２は、放熱フィン２２５の上端２２５Ｄ同士を連結した板状を成し、かつ、外端部２２５Ｂの連結部２８１に連結されているため、カバー固定部２６２の強度を連結部２８１で補強でき、グローブ２１２をカバー固定部２６２に強固に固定できる。 Moreover, since the board | substrate mounting part 221, the thermal radiation fin 225, and the connection part 281 are integrally molded, while thermal resistance becomes small and high heat dissipation efficiency is obtained, high intensity | strength is acquired.
In addition, since the connecting portion 281 is connected except for a part of the heat radiating fins 225, air is blown from outside in the radial direction between the open heat radiating fins 225 that are not connected to the connecting portion 281. In addition to obtaining high heat dissipation efficiency, the open portion 284, which is the open opening 282, can be used as a mark for positioning or the like, and the open portion 284 can be used as a fitting portion such as a positioning jig, thereby improving assemblability.
Further, the cover fixing portion 262 for fixing the globe 212 that covers the front side of the substrate placement portion 221 has a plate shape in which the upper ends 225D of the radiation fins 225 are connected to each other, and is connected to the connecting portion 281 of the outer end portion 225B. Therefore, the strength of the cover fixing portion 262 can be reinforced by the connecting portion 281, and the globe 212 can be firmly fixed to the cover fixing portion 262.

さらに、本発明を適用した実施の形態によれば、筒状部２３０に設けられた口金３を備え、口金３がソケット２９０に締結されるＬＥＤランプ２００であって、筒状部２３０の外周に設けられるリング状の緩み防止部材２６０を備え、緩み防止部材２６０は、ソケット２９０の接続用開口２９２の周縁部２９２Ａに当接するソケット側当接面２９７を有し、ソケット側当接面２９７は、ＬＥＤランプ２００の回転を防止する連結壁部３０３を備えた。これにより、緩み防止部材２６０のソケット側当接面２９７をソケット２９０の接続用開口２９２の周縁部２９２Ａに当接させると、ソケット側当接面２９７の連結壁部３０３によってＬＥＤランプ２００の回転を防止できるため、ソケット２９０に対するＬＥＤランプ２００の締結の緩みを防止できる。   Furthermore, according to the embodiment to which the present invention is applied, the LED lamp 200 is provided with the base 3 provided on the cylindrical portion 230, and the base 3 is fastened to the socket 290. Provided with a ring-shaped loosening prevention member 260. The loosening prevention member 260 has a socket side contact surface 297 that contacts the peripheral edge 292A of the connection opening 292 of the socket 290. A connecting wall portion 303 that prevents the LED lamp 200 from rotating is provided. Accordingly, when the socket-side contact surface 297 of the loosening prevention member 260 is brought into contact with the peripheral edge portion 292A of the connection opening 292 of the socket 290, the LED lamp 200 is rotated by the connecting wall portion 303 of the socket-side contact surface 297. Therefore, loosening of the fastening of the LED lamp 200 with respect to the socket 290 can be prevented.

また、連結壁部３０３は、ソケット２９０の周縁部２９２Ａ側へ突出して周縁部２９２Ａに当接する凸状部であるため、凸状部の変形の反発力によってＬＥＤランプ２００の回転を効果的に防止できる。
また、連結壁部３０３は、筒状部２３０の周囲に放射状に配置される板状の凸状部であるため、板状の凸状部の変形の反発力によってＬＥＤランプ２００の回転を効果的に防止できる。 In addition, since the connecting wall portion 303 is a convex portion that protrudes toward the peripheral edge 292A of the socket 290 and contacts the peripheral edge 292A, the rotation of the LED lamp 200 is effectively prevented by the repulsive force of the deformation of the convex portion. it can.
Further, since the connecting wall portion 303 is a plate-like convex portion arranged radially around the cylindrical portion 230, the LED lamp 200 is effectively rotated by the repulsive force of the deformation of the plate-like convex portion. Can be prevented.

さらに、連結壁部３０３は、ソケット２９０に対するＬＥＤランプ２００の締結に伴って、ＬＥＤランプ２００の緩み方向の回転を抑制するように変形するため、連結壁部３０３の変形によってＬＥＤランプ２００の回転を防止できる。
また、筒状部２３０は、径方向外側に突出する拡径部２９３を備え、緩み防止部材２６０は、拡径部２９３と周縁部２９２Ａとの間で圧縮され、緩み防止部材２６０は、拡径部２９３に係合して緩み防止部材２６０の回転を規制する凸部２９９を備える。これにより、凸部２９９によって緩み防止部材２６０の回転を規制でき、連結壁部３０３を効果的に機能させることができるため、ソケット２９０に対するＬＥＤランプ２００の締結の緩みを防止できる。 Further, since the connecting wall 303 is deformed so as to suppress the rotation of the LED lamp 200 in the loosening direction with the fastening of the LED lamp 200 to the socket 290, the rotation of the LED lamp 200 is caused by the deformation of the connecting wall 303. Can be prevented.
Moreover, the cylindrical part 230 is provided with the enlarged diameter part 293 which protrudes to a radial direction outer side, the loosening prevention member 260 is compressed between the enlarged diameter part 293 and the peripheral part 292A, and the loosening prevention member 260 is expanded in diameter. A convex portion 299 that engages with the portion 293 and restricts the rotation of the loosening prevention member 260 is provided. Thereby, since the rotation of the loosening prevention member 260 can be restricted by the convex portion 299 and the connecting wall portion 303 can be effectively functioned, loosening of the LED lamp 200 with respect to the socket 290 can be prevented.

なお、上記実施の形態は本発明を適用した一態様を示すものであって、本発明は上記実施の形態に限定されるものではない。
上記実施の形態では、筒状の連結部２８１は、外周側に開放した開放部２８４を備えるものとして説明したが、本発明はこれに限定されるものでは無く、例えば、連結部２８１は開放部２８４を備えない完全な筒状であってもよい。
また、上記実施の形態では、回転防止手段は、筒状部２３０の周囲に放射状に配置される板状の凸状部である連結壁部３０３であるものとして説明したが、本発明はこれに限定されるものでは無い。例えば、回転防止手段は、連結壁部３０３に替えて筒状部２３０の周囲に互いに間隔をあけて複数配置される柱状の凸状部であってもよい。 In addition, the said embodiment shows the one aspect | mode which applied this invention, Comprising: This invention is not limited to the said embodiment.
In the above-described embodiment, the cylindrical connecting portion 281 has been described as including the opening portion 284 that opens to the outer peripheral side. However, the present invention is not limited to this, and for example, the connecting portion 281 is the opening portion. It may be a complete cylinder without 284.
In the above embodiment, the rotation preventing means has been described as the connecting wall portion 303 which is a plate-like convex portion arranged radially around the cylindrical portion 230, but the present invention is not limited thereto. It is not limited. For example, the rotation preventing means may be a columnar convex portion that is arranged in a plurality at intervals around the cylindrical portion 230 in place of the connecting wall portion 303.

２００ ＬＥＤランプ（ランプ）
２１１ ＬＥＤ基板（基板）
２１２ グローブ（カバー）
２１４ａ 固定部
２１５ ＬＥＤ（発光素子）
２２１ 基板載置部
２２５ 放熱フィン
２２５Ａ 内端部
２２５Ｂ 外端部
２２５Ｃ 先端部
２２５Ｄ 上端（上端部）
２３０ 筒状部
２６２ カバー固定部
２６２Ａ ボス部
２６５ 隙間
２８１ 連結部 200 LED lamp (lamp)
211 LED board (board)
212 Glove (Cover)
214a Fixed part 215 LED (light emitting element)
221 Substrate placing portion 225 Radiation fin 225A Inner end 225B Outer end 225C Front end 225D Upper end (upper end)
230 Cylindrical part 262 Cover fixing part 262A Boss part 265 Gap 281 Connection part

Claims (4)

発光素子を実装した基板を載置する基板載置部と、
前記基板載置部の裏面から延びる筒状部と、
前記基板載置部の裏面に、前記筒状部の周方向に間隔をあけて設けられた複数の放熱フィンと、
前記基板載置部の表側を覆うカバーと、
前記カバーが固定されるカバー固定部と、を備え、
前記放熱フィンは、前記筒状部の径方向において前記基板載置部よりも外側に突出した外端部を有し、
前記カバー固定部は、前記放熱フィンの前記外端部同士を連結する板状であることを特徴とするランプ。 A substrate mounting portion for mounting a substrate on which the light emitting element is mounted;
A cylindrical portion extending from the back surface of the substrate mounting portion;
A plurality of heat dissipating fins provided on the back surface of the substrate mounting portion at intervals in the circumferential direction of the cylindrical portion;
A cover that covers the front side of the substrate mounting portion;
A cover fixing portion to which the cover is fixed,
The radiating fin has an outer end portion protruding outward from the substrate mounting portion in the radial direction of the cylindrical portion,
The cover fixing portion has a plate shape that connects the outer end portions of the radiating fins to each other. 前記基板載置部と前記放熱フィンとは、一体成型されていることを特徴とする請求項１記載のランプ。   The lamp according to claim 1, wherein the substrate mounting portion and the heat radiating fin are integrally formed. 前記カバーは、外周部から径方向外側に延びる固定部を有し、
前記固定部は、前記カバー固定部に設けられるボス部に固定されることを特徴とする請求項１又は２に記載のランプ。 The cover has a fixing portion extending radially outward from the outer periphery,
The lamp according to claim 1, wherein the fixing portion is fixed to a boss portion provided in the cover fixing portion. 前記放熱フィンの前記外端部の先端部同士を連結する連結部が設けられ、
前記連結部は、前記筒状部の軸方向に延びる板状であることを特徴とする請求項１から３のいずれかに記載のランプ。 A connecting portion that connects the tips of the outer end portions of the radiating fins is provided,
The lamp according to any one of claims 1 to 3, wherein the connecting portion has a plate shape extending in an axial direction of the cylindrical portion.
JP2018105780A 2018-06-01 2018-06-01 lamp Active JP6590027B2 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137782U (en) * 1974-09-13 1976-03-22
JP3135391U (en) * 2007-07-03 2007-09-13 浩然科技股▲ふん▼有限公司 LED heat dissipation module
JP2013025924A (en) * 2011-07-19 2013-02-04 Iwasaki Electric Co Ltd Lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137782U (en) * 1974-09-13 1976-03-22
JP3135391U (en) * 2007-07-03 2007-09-13 浩然科技股▲ふん▼有限公司 LED heat dissipation module
JP2013025924A (en) * 2011-07-19 2013-02-04 Iwasaki Electric Co Ltd Lamp

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