JP2013004439A

JP2013004439A - Bulb type lamp, and case thereof

Info

Publication number: JP2013004439A
Application number: JP2011137021A
Authority: JP
Inventors: Yoshihiro Yokota; 佳弘横田; Hiroaki Suzuki; 裕明鈴木; Norichika Aoki; 律親青木
Original assignee: Inoue MTP KK; Inoac Corp
Current assignee: Inoac Corp
Priority date: 2011-06-21
Filing date: 2011-06-21
Publication date: 2013-01-07

Abstract

PROBLEM TO BE SOLVED: To provide a bulb type lamp and a case thereof having both high strength and high productivity.SOLUTION: The case 13 of the bulb type lamp 10 has a metallic case 20 which is widened from the base end part of the bulb type lamp 10 toward the top end part and in which a heat radiating member 40 is inserted inside the large-diameter side end part, and a resin-made case 30 which is widened from the base end part of the bulb type lamp 10 toward the top end part and has an inner engagement cylindrical part 31 which is engaged inside the metallic case 20 and of which the large-diameter side end part is abutted to the heat radiation member 40. Out of the inner engagement cylindrical part 31, the portion on a base 17 side from an intermediate position P1 in axial direction is made a fixed support cylinder 31A to support the metallic case 20 from the inside in a state fixed to the metallic case 20, while the portion on the heat radiation member 40 side from the intermediate position P1 out of the inner engagement cylindrical part 31 is made a non-fixed support cylinder 31B to support the metallic case 20 from the inside in a state not fixed to the metallic case 20.

Description

本発明は、発光素子実装基板を有する電球形電灯及びその筐体に関する。 The present invention relates to a light bulb shaped lamp having a light emitting element mounting substrate and a casing thereof.

電球形電灯の筐体として、テーパー筒形の金属製筐体の内側に、樹脂製筐体が有するテーパー筒形のインナー嵌合筒部を嵌合して、金属製筐体の内側から補強したものが知られている。また、このような構造の電球形電灯の筐体として、従来より、インナー嵌合筒部全体を金属製筐体の内面に接着剤にて固着したものと（例えば、特許文献１参照）、固着せずに、単にインナー嵌合筒部を金属製筐体の内面に重ねただけのものとがある（例えば、特許文献２参照）。 Reinforced from the inside of the metal casing by fitting the inner cylindrical fitting section of the resin casing inside the tapered cylindrical metal casing as the bulb-type electric lamp casing Things are known. Further, as a case of a bulb-type electric lamp having such a structure, conventionally, the entire inner fitting tube portion is fixed to the inner surface of a metal housing with an adhesive (for example, see Patent Document 1), There is a type in which the inner fitting cylinder portion is simply stacked on the inner surface of the metal casing without being worn (see, for example, Patent Document 2).

特開２０１０−１２９２７５号公報（段落［００２６］）JP 2010-129275 A (paragraph [0026])

実用新案登録第３１５６６８５号公報（段落［００３３］）Utility Model Registration No. 315685 (paragraph [0033])

ところで、金属製筐体の外面が局所的に加圧されるような負荷に対しては、上記したインナー嵌合筒部と金属製筐体とが固着されていない補強構造でも、インナー嵌合筒部と金属製筐体とが固着された補強構造と同様に、金属製筐体の一部の陥没変形を防ぐという効果は奏する。 By the way, with respect to a load in which the outer surface of the metal casing is locally pressurized, the inner fitting cylinder can be used even in the reinforcing structure in which the inner fitting cylinder portion and the metal casing are not fixed. Similar to the reinforcing structure in which the part and the metal casing are fixed, the effect of preventing the depression deformation of a part of the metal casing is achieved.

しかしながら、電球形電灯の筐体全体が捻られるトーション負荷や、筐体全体が曲げられるモーメント負荷や、筐体全体が挟持されて潰される挟持負荷を受けた場合には、上記したインナー嵌合筒部と金属製筐体とが固着されていない補強構造では、上記したインナー嵌合筒部と金属製筐体とが固着された補強構造に比べて容易に、筐体全体が変形する。具体的には、金属製筐体及びインナー嵌合筒部が、共に正規の断面形状（例えば、円形）から歪んだ断面形状（例えば、楕円形状）になるようなトーション負荷、モーメント負荷又は挟持負荷を受けた場合、上記したインナー嵌合筒部と金属製筐体とが固着された補強構造では、インナー嵌合筒部と金属製筐体との間に剪断応力（剪断抵抗）が作用する一方、上記したインナー嵌合筒部と金属製筐体とが固着していない補強構造では、当初からインナー嵌合筒部と金属製筐体との間が離れているので、インナー嵌合筒部と金属製筐体との間に剪断応力（剪断抵抗）は作用しない。即ち、上記したインナー嵌合筒部と金属製筐体とが固着していない補強構造では、トーション負荷、モーメント負荷又は挟持負荷に対して補強が十分ではないという問題がある。 However, when the torsional load that twists the entire housing of the bulb-type electric light, the moment load that the entire housing is bent, or the sandwiching load that is crushed when the entire housing is sandwiched, the inner fitting cylinder described above is used. In the reinforcing structure in which the portion and the metal casing are not fixed, the entire casing is easily deformed as compared with the reinforcing structure in which the inner fitting tube portion and the metal casing are fixed. Specifically, the torsion load, moment load, or pinching load in which both the metal casing and the inner fitting cylinder portion change from a regular cross-sectional shape (for example, circular) to a distorted cross-sectional shape (for example, elliptical shape). In the reinforcing structure in which the inner fitting cylinder and the metal casing are fixed, a shear stress (shear resistance) acts between the inner fitting cylinder and the metal casing. In the reinforcing structure in which the inner fitting cylinder part and the metal casing are not fixed, the inner fitting cylinder part and the metal casing are separated from the beginning. No shear stress (shear resistance) acts between the metal casing. That is, the above-described reinforcing structure in which the inner fitting cylinder portion and the metal casing are not fixed has a problem that the reinforcement is not sufficient with respect to the torsion load, moment load, or clamping load.

一方、上記したインナー嵌合筒部と金属製筐体とが固着された補強構造では、発光素子実装基板を含む内蓋体を金属製筐体の大径側端部の内側に嵌め込む構造とした場合に、内蓋体の形状のばらつきを金属製筐体の大径側端部の変形によって吸収することが困難になり、ＮＧ品が発生したり、組み立てに手間がかかったりして、生産性が低くなるという問題が生じていた。 On the other hand, in the reinforcing structure in which the inner fitting cylinder portion and the metal casing are fixed, the inner lid body including the light emitting element mounting substrate is fitted inside the large-diameter end of the metal casing. In this case, it becomes difficult to absorb the variation in the shape of the inner lid due to the deformation of the large-diameter side end of the metal housing, and NG products are generated and it takes time and effort to assemble. There has been a problem that the performance is low.

本発明は、上記事情に鑑みてなされたものであって、強度及び生産性が共に高い電球形電灯及びその筐体を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a light bulb shaped lamp having high strength and high productivity, and a casing thereof.

上記目的を達成するためになされた請求項１の発明に係る電球形電灯の筐体は、電球形電灯の口金側の基端部から口金と反対側の先端部に向かって拡径した筒状をなし、その大径側端部の内側に、発光素子実装基板を含む内蓋体が嵌め込まれる金属製筐体と、電球形電灯の基端部から先端部に向かって拡径した筒状をなして金属製筐体の内側に嵌合しかつ大径側端部が内蓋体に突き合わされるインナー嵌合筒部を有する樹脂製筐体とを備えた電球形電灯の筐体において、インナー嵌合筒部のうち軸方向の中間位置より口金側部分を、金属製筐体に固着された状態で金属製筐体を内側から支持する固着支持筒部とする一方、インナー嵌合筒部のうち中間位置より内蓋体側部分を、金属製筐体に固着されていない状態で金属製筐体を内側から支持する非固着支持筒部としたところに特徴を有する。 The bulb-type electric lamp housing according to the invention of claim 1 made to achieve the above object has a cylindrical shape whose diameter increases from the base end portion on the base side of the bulb-type electric lamp toward the tip portion on the side opposite to the base. A metal casing into which an inner lid body including a light emitting element mounting substrate is fitted, and a cylindrical shape whose diameter increases from the base end portion to the tip end portion of the bulb-type electric lamp. In the case of a light bulb shaped electric lamp comprising a resin casing having an inner fitting cylinder portion that fits inside the metal casing and has a large-diameter end on the inner lid. While the base portion of the fitting tube portion from the axial intermediate position is fixed to the metal housing in a state of being fixed to the metal housing, the fixing support tube portion that supports the metal housing from the inside is used. Supports the metal casing from the inside, with the inner lid side part from the middle position not secured to the metal casing. Characterized in was a non-stick supporting cylinder unit that.

請求項２の発明は、請求項１に記載の電球形電灯の筐体において、固着支持筒部と金属製筐体との間に接着剤層を備えたところに特徴を有する。 The invention of claim 2 is characterized in that in the case of the light bulb shaped electric lamp according to claim 1, an adhesive layer is provided between the fixed support tube portion and the metal case.

請求項３の発明は、請求項２に記載の電球形電灯の筐体において、樹脂製筐体は、金属製筐体に対するインサート成形品であり、接着剤層は、金属製筐体に塗布されたホットメルト層であるところに特徴を有する。 According to a third aspect of the present invention, in the case of the electric bulb-type electric lamp according to the second aspect, the resin casing is an insert-molded product for the metal casing, and the adhesive layer is applied to the metal casing. It is characterized by being a hot melt layer.

請求項４の発明は、請求項１乃至３の何れか１の請求項に記載の電球形電灯の筐体において、固着支持筒部の外面と非固着支持筒部の外面とが面一であるところに特徴を有する。 According to a fourth aspect of the present invention, in the bulb-type electric lamp housing according to any one of the first to third aspects, the outer surface of the fixed support tube portion and the outer surface of the non-fixed support tube portion are flush with each other. However, it has characteristics.

請求項５の発明に係る電球形電灯は、請求項１乃至４の何れか１の請求項に記載の電球形電灯の筐体を備えたところに特徴を有する。 A light bulb shaped electric lamp according to the invention of claim 5 is characterized in that it is provided with the case of the light bulb shaped electric lamp according to any one of claims 1 to 4.

［請求項１，２及び５の発明］
請求項１及び５の発明に係る電球形電灯の筐体では、口金側の基端部から口金と反対側の先端部に向かって拡径した筒状の金属製筐体のうち大径側端部の内側に内蓋体が嵌め込まれる。また、樹脂製筐体のうち金属製筐体と同様に基端部から先端部に向かって拡径した筒状のインナー嵌合筒部は、金属製筐体の内側に嵌合して内蓋体に突き合わされる位置まで延びている。 [Inventions of Claims 1, 2 and 5]
In the case of the light bulb shaped electric lamp according to the first and fifth aspects of the invention, the large-diameter side end of the cylindrical metal case whose diameter is expanded from the base end on the base side toward the tip on the side opposite to the base. An inner lid is fitted inside the part. In addition, a cylindrical inner fitting cylinder portion whose diameter is enlarged from the base end portion toward the distal end portion in the same manner as the metal casing among the resin casings is fitted inside the metal casing and is attached to the inner lid. It extends to the position where it meets the body.

これにより、金属製筐体のうち内蓋体より口金側全体は、インナー嵌合筒部によって内側から支持されると共に、金属製筐体のうちインナー嵌合筒部より先の大径側端部は、内蓋体によって内側から支持され、金属製筐体の外面が局所的に加圧されるような負荷を受けても、その負荷による金属製筐体の陥没変形を防ぐことができる。 As a result, the entire base side from the inner lid body of the metal casing is supported from the inside by the inner fitting cylindrical portion, and the large-diameter side end portion ahead of the inner fitting cylindrical portion of the metallic casing. Is supported from the inside by the inner lid, and even when subjected to a load in which the outer surface of the metal casing is locally pressurized, it is possible to prevent the metal casing from being depressed due to the load.

また、インナー嵌合筒部のうち軸方向の中間位置より口金側部分は、金属製筐体に固着された状態で金属製筐体を内側から支持する固着支持筒部になっている。これにより、電球形電灯の筐体全体にトーション負荷やモーメント負荷や挟持負荷がかかっても、金属製筐体の小径側端部及び、金属製筐体の軸方向の中間部の変形が防がれる。さらに、上記したように金属製筐体の大径側端部は、内蓋体によって内側から支持されているので、上記トーション負荷等による金属製筐体の大径側端部の変形も防がれる。即ち、本発明によれば、金属製筐体にインナー嵌合筒部を固着せずに組み付けただけの従来のものに比べて強度が高い電球形電灯及びその筐体を提供することが可能になる。 Further, the base side portion of the inner fitting cylindrical portion from the axial intermediate position is a fixed support cylindrical portion that supports the metal casing from the inside while being fixed to the metal casing. As a result, even if a torsional load, moment load, or pinching load is applied to the entire housing of the bulb-type electric light, deformation of the end portion on the small diameter side of the metal housing and the intermediate portion in the axial direction of the metal housing is prevented. It is. Furthermore, as described above, the large-diameter side end of the metal casing is supported from the inside by the inner lid, so that deformation of the large-diameter side end of the metal casing due to the torsion load or the like is prevented. It is. That is, according to the present invention, it is possible to provide a bulb-type electric lamp having a higher strength than a conventional lamp that is assembled without attaching an inner fitting cylinder portion to a metal casing, and the casing thereof. Become.

そして、本発明では、インナー嵌合筒部のうち軸方向の中間位置より内蓋体側部分を、金属製筐体に固着されていない状態で金属製筐体を内側から支持する非固着支持筒部としたので、金属製筐体の大径側端部は、内蓋体を嵌め込む前の状態では、正規の断面形状から歪んだ断面形状へと容易に変形する。これにより、内蓋体の形状のばらつきを金属製筐体の大径側端部の変形によって容易に吸収することができ、ＮＧ品の発生を抑えて生産性を高くすることができる。即ち、本発明によれば、金属製筐体にインナー嵌合筒部の全体を固着して組み付けた従来のものに比べて生産性が共に高い電球形電灯及びその筐体を提供することが可能になる。 And in this invention, the non-adhesion support cylinder part which supports a metal housing | casing from the inner side in the state which is not fixed to the metal housing | casing in the state which is not firmly fixed to the metal housing | casing from the intermediate position of an axial direction among inner fitting cylinder parts Therefore, the large-diameter side end of the metal casing is easily deformed from a regular cross-sectional shape to a distorted cross-sectional shape before the inner lid body is fitted. Thereby, the variation in the shape of the inner lid can be easily absorbed by the deformation of the end on the large diameter side of the metal casing, and the production of NG products can be suppressed and the productivity can be increased. That is, according to the present invention, it is possible to provide a bulb-type electric lamp and its casing that are both more productive than conventional ones in which the entire inner fitting cylinder portion is fixedly assembled to a metal casing. become.

ここで、固着支持筒部と金属製筐体との間は接着剤層によって固着されていてもよいし（請求項２の発明）、金属製筐体の内面の凹凸に樹脂製筐体を構成する樹脂が入り込んで係止した、所謂、「アンカー効果」によって固着されていてもよい。 Here, the fixing support cylinder portion and the metal casing may be fixed by an adhesive layer (invention of claim 2), or the resin casing is formed on the unevenness of the inner surface of the metal casing. It may be fixed by a so-called “anchor effect” in which the resin to enter enters and locks.

［請求項３の発明］
請求項３の発明によれば、金属製筐体にホットメルトを塗布してインサート成形を行うことで、インナー嵌合筒部の成形及びインナー嵌合筒部の固着支持筒部と金属製筐体との固着を同一工程で行うことができる。また、筐体の製造に際して、金属製筐体とは別に樹脂製筐体を用意しておく必要が無いから、部品の調達、保管、在庫管理等に係る負荷を軽減することができる。 [Invention of claim 3]
According to the invention of claim 3, by forming the inner fitting cylinder part and fixing the supporting cylinder part of the inner fitting cylinder part and the metal case by applying hot molding to the metal case and performing insert molding Can be fixed in the same process. In addition, since it is not necessary to prepare a resin casing separately from a metal casing when manufacturing the casing, it is possible to reduce a load related to parts procurement, storage, inventory management, and the like.

［請求項４の発明］
請求項４の発明によれば、インナー嵌合筒部のうち、固着支持筒部の外面と非固着支持筒部の外面とを面一にすることで、インナー嵌合筒部を成形するための金型形状を簡素化することができる。 [Invention of claim 4]
According to the invention of claim 4, the inner fitting cylinder part is formed by flushing the outer surface of the fixed supporting cylinder part and the outer surface of the non-fixing supporting cylinder part among the inner fitting cylinder parts. The mold shape can be simplified.

本発明の一実施形態に係る電球形電灯の側面図1 is a side view of a light bulb shaped electric lamp according to an embodiment of the present invention. 電球形電灯の側断面図Side view of a bulb-type electric light 伝熱プレート及び発光素子実装基板の平面図Plan view of heat transfer plate and light emitting device mounting board 金属製筐体の平面図Top view of metal housing 電球形電灯の筐体を大径側端部から見た斜視図The perspective view which looked at the case of a bulb-type electric light from the end on the large diameter side 筐体の平面図Top view of the housing 図６におけるＸ−Ｘ切断面における断面図Sectional drawing in the XX cut surface in FIG. 図６におけるＹ−Ｙ切断面における断面図Sectional drawing in the YY cut surface in FIG. 筐体の大径側端部における拡大断面図Enlarged sectional view of the large-diameter end of the housing 筐体の成形金型を型開き状態にしたときの側断面図Side sectional view when the mold of the housing is opened 筐体の成形金型を型閉め状態にしたときの側断面図Side sectional view when the mold of the housing is closed

以下、本発明の一実施形態を、図１〜図１１に基づいて説明する。図１及び図２には、本発明に係る電球形電灯１０の全体が示されている。この電球形電灯１０は、一般的に「ＬＥＤ電球」と称されるものであって、透光カバー１２と筐体１３とで構成されたボディ１１の内側に、「発光素子」としてのＬＥＤ１４が実装された発光素子実装基板１５と、ＬＥＤ１４を駆動するためのドライバモジュール１６とを収容している。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2 show the entirety of a light bulb shaped lamp 10 according to the present invention. The bulb-shaped electric lamp 10 is generally called an “LED bulb”, and an LED 14 as a “light emitting element” is provided inside a body 11 constituted by a translucent cover 12 and a housing 13. The mounted light emitting element mounting substrate 15 and a driver module 16 for driving the LED 14 are accommodated.

透光カバー１２は、透明又は半透明な樹脂又はガラスで構成されており、筐体１３から膨出したドーム形となっている。これに対し、筐体１３は、口金１７側の基端部から透光カバー１２側の先端部に向かってテーパー状に拡径している。そして、図２に示すように、筐体１３の大径側端部に発光素子実装基板１５が配置されており、その発光素子実装基板１５が筐体１３の大径側端部に装着された透光カバー１２によって覆われている。図２及び図３に示すように、発光素子実装基板１５は、例えば、矩形平板状をなしており、透光カバー１２との対向面に複数のＬＥＤ１４，１４・・・が分散配置され、その裏面にはコネクタ１５Ｃが実装されている。また、発光素子実装基板１５の裏面には、ＬＥＤ１４，１４・・・から発生した熱を筐体１３に逃がすために、金属製（例えば、アルミニウム製）の放熱部材４０が宛がわれており、その放熱部材４０が筐体１３の大径側端部の内側に嵌合装着されている。なお、発光素子実装基板１５と放熱部材４０とで、本発明の「内蓋体」が構成されている。 The translucent cover 12 is made of a transparent or translucent resin or glass, and has a dome shape that bulges from the housing 13. On the other hand, the housing 13 has a diameter that tapers from the base end portion on the base 17 side toward the tip end portion on the translucent cover 12 side. Then, as shown in FIG. 2, the light emitting element mounting substrate 15 is disposed at the large diameter side end of the housing 13, and the light emitting element mounting substrate 15 is attached to the large diameter side end of the housing 13. Covered by a translucent cover 12. 2 and 3, the light emitting element mounting substrate 15 has, for example, a rectangular flat plate shape, and a plurality of LEDs 14, 14,... A connector 15C is mounted on the back surface. In addition, a heat radiation member 40 made of metal (for example, aluminum) is assigned to the rear surface of the light emitting element mounting substrate 15 in order to release heat generated from the LEDs 14, 14. The heat radiating member 40 is fitted and attached to the inside of the large-diameter end of the housing 13. The light emitting element mounting substrate 15 and the heat radiating member 40 constitute an “inner lid” of the present invention.

筐体１３は、金属製筐体２０と樹脂製筐体３０とから構成されている。金属製筐体２０は、ヒートシンクとして機能するように熱伝導性のよい金属（例えば、アルミニウム）で構成されている。一方、樹脂製筐体３０は、筐体１３内に収容したドライバモジュール１６と金属製筐体２０とを電気的に絶縁するために絶縁性の樹脂（例えば、ポリブチレンテレフタレート樹脂）で構成されている。なお、金属製筐体２０及び樹脂製筐体３０は、熱伝導性のよいその他の金属及び樹脂で構成してもよい。 The housing 13 includes a metal housing 20 and a resin housing 30. The metal casing 20 is made of a metal (for example, aluminum) having good thermal conductivity so as to function as a heat sink. On the other hand, the resin casing 30 is made of an insulating resin (for example, polybutylene terephthalate resin) in order to electrically insulate the driver module 16 housed in the casing 13 from the metal casing 20. Yes. The metal casing 20 and the resin casing 30 may be made of other metals and resins having good thermal conductivity.

金属製筐体２０は、プレス成形品であって、口金１７から発光素子実装基板１５に向かってテーパー状に拡径した筒状（漏斗形）をなすと共に、その小径側端部の開口縁を内側に屈曲させて円環状の結合鍔部２２が形成されている。また、図４に示すように、結合鍔部２２には、その内周縁を、例えば、矩形状に切り欠いた切り欠き部２４が周方向に間隔を開けて複数形成されている。本実施形態では、結合鍔部２２の周方向で互いに１８０度離れた２カ所に切り欠き部２４，２４が形成されている。 The metal casing 20 is a press-molded product, and has a cylindrical shape (funnel shape) whose diameter is increased in a tapered shape from the base 17 toward the light emitting element mounting substrate 15, and an opening edge of the small diameter side end portion thereof. An annular coupling flange 22 is formed by bending inward. As shown in FIG. 4, a plurality of cutout portions 24 are formed in the coupling collar portion 22 at intervals in the circumferential direction. In the present embodiment, the notches 24 and 24 are formed at two locations 180 degrees apart from each other in the circumferential direction of the coupling flange 22.

結合鍔部２２の内縁部は、樹脂製筐体３０を構成する樹脂に埋設されている。また、その埋設部分において、結合鍔部２２の内縁部に形成された切り欠き部２４，２４と樹脂製筐体３０とが凹凸係合している。 The inner edge portion of the coupling flange 22 is embedded in the resin constituting the resin housing 30. Further, in the embedded portion, the notches 24 and 24 formed at the inner edge portion of the coupling flange portion 22 and the resin casing 30 are engaged with each other in an uneven manner.

樹脂製筐体３０は、金属製筐体２０の内側に嵌合したインナー嵌合筒部３１と、金属製筐体２０の小径側端部から金属製筐体２０の外側に突出した外側突出部３２とを備えている。インナー嵌合筒部３１は、金属製筐体２０の内面形状に対応した形状、具体的には、発光素子実装基板１５に向かってテーパー状に拡径した筒状（漏斗形）をなし、金属製筐体２０のテーパー内面に宛がわれている。また、図５及び図７に示すように、インナー嵌合筒部３１の大径側端部は、金属製筐体２０の大径側端部よりも小径側に一定幅でずらされている。即ち、金属製筐体２０の大径側端部には、樹脂製筐体３０に覆われることなく内側に露出した内面露出部２３が全周に亘って設けられている。 The resin casing 30 includes an inner fitting cylinder portion 31 that is fitted inside the metal casing 20 and an outer protrusion that protrudes outside the metal casing 20 from the small-diameter end of the metal casing 20. 32. The inner fitting cylinder portion 31 has a shape corresponding to the inner shape of the metal casing 20, specifically, a cylindrical shape (funnel shape) whose diameter increases in a tapered shape toward the light emitting element mounting substrate 15, and is made of metal. It is assigned to the taper inner surface of the case 20. As shown in FIGS. 5 and 7, the large-diameter side end portion of the inner fitting cylinder portion 31 is shifted with a constant width to the small-diameter side from the large-diameter side end portion of the metal housing 20. That is, an inner surface exposed portion 23 that is exposed to the inner side without being covered with the resin casing 30 is provided at the end on the large diameter side of the metal casing 20 over the entire circumference.

図７に示すように、インナー嵌合筒部３１の小径側端部からは円環状の鍔被覆部３３が内側に向かって突出しており、その鍔被覆部３３が金属製筐体２０の結合鍔部２２の内面を覆っている。 As shown in FIG. 7, an annular flange covering portion 33 protrudes inward from the small diameter side end portion of the inner fitting cylinder portion 31, and the flange covering portion 33 is a joint flange of the metal casing 20. The inner surface of the portion 22 is covered.

図５及び図６に示すように、鍔被覆部３３には、周方向で等間隔に複数の鍔部露出孔３３Ａ，３３Ａが形成されている。鍔部露出孔３３Ａ，３３Ａは、鍔被覆部３３を金属製筐体２０の軸方向で貫通している（図２参照）。そして、これら鍔部露出孔３３Ａ，３３Ａによって、結合鍔部２２の内面の一部が樹脂製筐体３０の内側に露出している。 As shown in FIGS. 5 and 6, the collar cover 33 is formed with a plurality of collar exposure holes 33 A and 33 A at equal intervals in the circumferential direction. The flange exposure holes 33A and 33A penetrate the flange cover 33 in the axial direction of the metal casing 20 (see FIG. 2). A part of the inner surface of the coupling flange 22 is exposed to the inside of the resin casing 30 through the flange exposure holes 33A and 33A.

鍔部露出孔３３Ａ，３３Ａが設けられたことで、筐体１３内に籠もった熱（ドライバモジュール１６から発生した熱）が金属製筐体２０に伝わって、金属製筐体２０から放熱される。例えば、口金１７を上にした状態で電球形電灯１０を使用した場合には、筐体１３内の暖気が鍔部露出孔３３Ａ，３３Ａのある上方へと移動するので、鍔部露出孔３３Ａ，３３Ａが特に効果的である。 By providing the flange exposure holes 33A and 33A, heat trapped in the housing 13 (heat generated from the driver module 16) is transmitted to the metal housing 20 and is dissipated from the metal housing 20. The For example, when the bulb-type electric lamp 10 is used with the base 17 facing upward, the warm air in the housing 13 moves upward with the buttock exposure holes 33A, 33A. 33A is particularly effective.

図７に示すように、樹脂製筐体３０の外側突出部３２は、インナー嵌合筒部３１と同軸の円筒形をなしている。外側突出部３２は鍔被覆部３３の内縁部から起立しており、それら鍔被覆部３３と外側突出部３２との境界部分には、金属製筐体２０における結合鍔部２２の内縁部が埋設されている。 As shown in FIG. 7, the outer protrusion 32 of the resin casing 30 has a cylindrical shape coaxial with the inner fitting cylinder 31. The outer protruding portion 32 stands up from the inner edge portion of the flange covering portion 33, and the inner edge portion of the coupling flange portion 22 in the metal housing 20 is embedded in the boundary portion between the flange covering portion 33 and the outer protruding portion 32. Has been.

外側突出部３２は、鍔被覆部３３（インナー嵌合筒部３１）に近い方から順に、大径筒部３２Ａ、中径筒部３２Ｂ、小径筒部３２Ｃとなっており、その順に段階的に外径が小さくなっている。鍔被覆部３３から最も離れた小径筒部３２Ｃの外周面にはねじ山が形成されており（図１及び図２参照）、ここに一端有底筒形のねじ式口金１７（Ｅ形口金）が螺合されている。そして、口金１７の開口端寄り部分が、中径筒部３２Ｂの外側に嵌合してカシメ固定されている。 The outer projecting portion 32 is a large diameter cylindrical portion 32A, a middle diameter cylindrical portion 32B, and a small diameter cylindrical portion 32C in order from the side closer to the flange covering portion 33 (inner fitting cylindrical portion 31), and stepwise in that order. The outer diameter is small. A screw thread is formed on the outer peripheral surface of the small-diameter cylindrical portion 32C farthest from the collar covering portion 33 (see FIGS. 1 and 2), and a cylindrical screw-type cap 17 having one end (E-shaped base) is formed here. Are screwed together. A portion near the opening end of the base 17 is fitted and fixed to the outside of the medium diameter cylindrical portion 32B.

図２に示すように、外側突出部３２（中径筒部３２Ｂ及び小径筒部３２Ｃ）の外側に装着された口金１７の開口端は、中径筒部３２Ｂと大径筒部３２Ａとの間の段差面３２Ｄに突き当てられており、それ以上、金属製筐体２０に接近することが禁止される。つまり、口金１７と金属製筐体２０とが大径筒部３２Ａの軸長分だけ離して配置され、口金１７と金属製筐体２０との間を電気的に絶縁することができる。 As shown in FIG. 2, the opening end of the cap 17 attached to the outside of the outer protruding portion 32 (the medium diameter cylindrical portion 32B and the small diameter cylindrical portion 32C) is between the medium diameter cylindrical portion 32B and the large diameter cylindrical portion 32A. The step surface 32 D is abutted against the metal casing 20, and further access to the metal casing 20 is prohibited. That is, the base 17 and the metal casing 20 are arranged apart from each other by the axial length of the large-diameter cylindrical portion 32A, and the base 17 and the metal casing 20 can be electrically insulated.

樹脂製筐体３０の内側にはドライバモジュール１６が収容されている。ドライバモジュール１６は、例えば、コンデンサやスイッチング素子等の複数の電気部品１６Ｅ，１６Ｅ・・・を回路基板１６Ｋに実装した構造をなし、商用電源の交流を直流に変換してＬＥＤ１４，１４・・・に定電流の直流電流を供給する。図２に示すように、回路基板１６Ｋは、樹脂製筐体３０の軸方向に延びた縦長平板状をなしており、インナー嵌合筒部３１と外側突出部３２とに跨って収容されている。また、回路基板１６Ｋは、インナー嵌合筒部３１に収容された部分が外側突出部３２に収容された部分に対して幅広となっている（図７参照）。さらに、回路基板１６Ｋに実装された電気部品１６Ｅ，１６Ｅ・・・は、樹脂製筐体３０及び放熱部材４０から離されている。 A driver module 16 is accommodated inside the resin housing 30. The driver module 16 has a structure in which, for example, a plurality of electrical components 16E, 16E... Such as capacitors and switching elements are mounted on the circuit board 16K. Is supplied with a constant direct current. As shown in FIG. 2, the circuit board 16 K has a vertically long plate shape extending in the axial direction of the resin casing 30 and is accommodated across the inner fitting cylinder portion 31 and the outer protruding portion 32. . Moreover, the circuit board 16K is wider than the part accommodated in the outer protrusion part 32 in the part accommodated in the inner fitting cylinder part 31 (see FIG. 7). Further, the electrical components 16E, 16E,... Mounted on the circuit board 16K are separated from the resin casing 30 and the heat dissipation member 40.

図２に示すように、ドライバモジュール１６からは複数本のリード線１６Ａ，１６Ｂが延びている。ドライバモジュール１６の出力部から延びたリード線１６Ａ，１６Ａは、発光素子実装基板１５のコネクタ１５Ｃに接続されている。 As shown in FIG. 2, a plurality of lead wires 16 A and 16 B extend from the driver module 16. Lead wires 16A, 16A extending from the output portion of the driver module 16 are connected to a connector 15C of the light emitting element mounting substrate 15.

一方、ドライバモジュール１６の入力部から延びたリード線１６Ｂ，１６Ｂは、口金１７に接続（ハンダ付け）されている。詳細には、外側突出部３２の筒壁を貫通したリード線挿通孔３２Ｅと、外側突出部３２の末端開口３２Ｆとからリード線１６Ｂ，１６Ｂが引き出されて、それぞれ口金１７の筒壁及び底壁に接続されている。 On the other hand, lead wires 16B and 16B extending from the input portion of the driver module 16 are connected (soldered) to the base 17. Specifically, the lead wires 16B and 16B are drawn out from the lead wire insertion hole 32E that penetrates the cylindrical wall of the outer protruding portion 32 and the terminal opening 32F of the outer protruding portion 32, respectively. It is connected to the.

図２に示すように、樹脂製筐体３０のうち外側突出部３２の内側には、ドライバモジュール１６を保持するための保持部３８が形成されている。保持部３８は、外側突出部３２の筒壁内面から張り出しかつ挿通孔３８Ｃを挟んで配置された１対の基板突当壁３８Ａ，３８Ａと、両基板突当壁３８Ａ，３８Ａからそれぞれドライバモジュール１６側に起立した基板挟持壁３８Ｂ，３８Ｂとを備えている（図６参照）。 As shown in FIG. 2, a holding portion 38 for holding the driver module 16 is formed inside the outer protruding portion 32 of the resin casing 30. The holding portion 38 protrudes from the inner surface of the cylindrical wall of the outer protruding portion 32 and is arranged from the pair of board abutting walls 38A and 38A arranged with the insertion hole 38C interposed therebetween, and the board module abutting walls 38A and 38A. And substrate holding walls 38B, 38B standing on the side (see FIG. 6).

図２及び図７に示すように、ドライバモジュール１６の回路基板１６Ｋは、その長手方向の一端部が基板突当壁３８Ａ，３８Ａに突き当てられかつ、その一端部が基板挟持壁３８Ｂ，３８Ｂのスリット部３８Ｓ，３８Ｓに挿入されている。 As shown in FIGS. 2 and 7, the circuit board 16K of the driver module 16 has one end in the longitudinal direction abutted against the board abutting walls 38A and 38A and one end of the circuit board 16K of the board holding walls 38B and 38B. The slit portions 38S and 38S are inserted.

図５に示すように、樹脂製筐体３０のうちインナー嵌合筒部３１の内面には、複数の補強リブ３４，３４・・・が形成されている。補強リブ３４，３４・・・は、インナー嵌合筒部３１の内面から突出しかつ軸方向と平行に延びている。補強リブ３４，３４・・・は、インナー嵌合筒部３１の大径側端部及び小径側端部から共に離れた軸方向の中間部に形成されている。また、補強リブ３４，３４・・・のうち、樹脂製筐体３０の内側を向いた内側辺は樹脂製筐体３０の軸方向と平行であり、大径側端部の方を向いた先端面は、樹脂製筐体３０の軸方向と直交した同一平面で揃えられている（図７及び図８参照）。 As shown in FIG. 5, a plurality of reinforcing ribs 34, 34... Are formed on the inner surface of the inner fitting cylinder portion 31 of the resin casing 30. The reinforcing ribs 34, 34... Protrude from the inner surface of the inner fitting cylinder portion 31 and extend parallel to the axial direction. Reinforcing ribs 34, 34... Are formed in an intermediate portion in the axial direction that is away from both the large-diameter side end and the small-diameter side end of the inner fitting cylinder portion 31. Further, among the reinforcing ribs 34, 34..., The inner side facing the inside of the resin casing 30 is parallel to the axial direction of the resin casing 30, and the tip is directed toward the large-diameter end. The surfaces are aligned on the same plane orthogonal to the axial direction of the resin casing 30 (see FIGS. 7 and 8).

本実施形態では、図６に示すように、補強リブ３４，３４・・・が全部で８つ設けられており、隣同士になった２つの補強リブ３４，３４が対をなしている。そして、対をなした２つの補強リブ３４，３４を間に挟んで、発光素子実装基板１５及び放熱部材４０を固定支持する固定支持柱３５，３５・・・が設けられている。 In this embodiment, as shown in FIG. 6, eight reinforcing ribs 34, 34... Are provided in total, and two adjacent reinforcing ribs 34, 34 form a pair. And the fixed support pillar 35,35 ... which fixes and supports the light emitting element mounting substrate 15 and the heat radiating member 40 is provided on both sides of the two reinforcing ribs 34 and 34 which made a pair.

固定支持柱３５，３５・・・は、インナー嵌合筒部３１の内面から樹脂製筐体３０の軸方向と平行に大径側端部に向かって起立しかつ、軸心部にビス締結孔を備えた円柱構造をなしている。ここで、固定支持柱３５，３５・・・の先端面は、補強リブ３４の先端面よりもインナー嵌合筒部３１の大径側端部の方に突出しかつ、インナー嵌合筒部３１の大径側端部よりも小径側端部の方に位置している（図８参照）。 The fixed support columns 35, 35... Stand up from the inner surface of the inner fitting cylinder portion 31 toward the large-diameter end in parallel with the axial direction of the resin casing 30, and screw fixing holes in the shaft center portion. It has a cylindrical structure with Here, the front end surfaces of the fixed support columns 35, 35... Protrude from the front end surface of the reinforcing rib 34 toward the large-diameter side end portion of the inner fitting cylinder portion 31 and the inner fitting cylinder portion 31. It is located toward the small-diameter end rather than the large-diameter end (see FIG. 8).

インナー嵌合筒部３１の内面には位置決めリブ３７が形成されている。図７に示すように、位置決めリブ３７は、補強リブ３４と同様にインナー嵌合筒部３１の内面から突出しかつ軸方向と平行に延びている。また、位置決めリブ３７は、補強リブ３４よりも厚肉であり、補強リブ３４の先端面よりもインナー嵌合筒部３１の大径側端部の方に突出している（図６及び図７参照）。 A positioning rib 37 is formed on the inner surface of the inner fitting cylinder portion 31. As shown in FIG. 7, the positioning rib 37 protrudes from the inner surface of the inner fitting cylinder portion 31 and extends in parallel with the axial direction, like the reinforcing rib 34. Further, the positioning rib 37 is thicker than the reinforcing rib 34 and protrudes toward the large-diameter side end of the inner fitting cylinder portion 31 from the front end surface of the reinforcing rib 34 (see FIGS. 6 and 7). ).

インナー嵌合筒部３１の内面には、補強リブ３４，３４に加えて１対の補強壁３６，３６が形成されている。これら補強壁３６，３６は、インナー嵌合筒部３１の内面から樹脂製筐体３０の軸方向と平行に起立しており、インナー嵌合筒部３１の径方向、より詳細には、基板突当壁３８Ａ，３８Ａの並び方向で対向配置されている（図６参照）。そして、各補強壁３６，３６は、２つの固定支持柱３５，３５とそれら２つの固定支持柱３５，３５の間で対をなした２つの補強リブ３４，３４とを連結している。 In addition to the reinforcing ribs 34 and 34, a pair of reinforcing walls 36 and 36 are formed on the inner surface of the inner fitting cylinder portion 31. These reinforcing walls 36, 36 stand from the inner surface of the inner fitting cylinder portion 31 in parallel with the axial direction of the resin casing 30, and more specifically in the radial direction of the inner fitting cylinder portion 31, more specifically, The walls 38A and 38A are arranged to face each other in the arrangement direction (see FIG. 6). Each reinforcing wall 36, 36 connects two fixed support columns 35, 35 and two reinforcing ribs 34, 34 paired between the two fixed support columns 35, 35.

筐体１３の大径側端部に嵌合装着された放熱部材４０は、円板形の底壁４１と、底壁４１の外周縁から曲げ起こされた円環状の周壁４２とから構成されている。 The heat radiating member 40 fitted and attached to the large-diameter end of the housing 13 is composed of a disc-shaped bottom wall 41 and an annular peripheral wall 42 bent and raised from the outer peripheral edge of the bottom wall 41. Yes.

放熱部材４０の底壁４１には、前記固定支持柱３５，３５の数及び配置と一致するように複数（本実施形態では、４つ）のビス孔４１Ａ，４１Ａ・・・が貫通形成されており、その底壁４１上に載置された発光素子実装基板１５にも、固定支持柱３５，３５の数及び配置と一致するように複数（本実施形態では、４つ）のビス孔１５Ａ，１５Ａ・・・が貫通形成されている（図３参照）。そして、発光素子実装基板１５と放熱部材４０は、それぞれのビス孔１５Ａ，４１Ａを貫通したビス（図示せず）によって固定支持柱３５，３５・・・の先端、即ち、筐体１３の大径側端部に固定支持されている。なお、図３には、発光素子実装基板１５に貫通形成された４つのビス孔１５Ａ，１５Ａ・・・のうちの３つと、放熱部材４０に貫通形成された４つのビス孔４０Ａ，４０Ａ・・・のうちの１つが示されている。また、図示しないが、放熱部材４０の底壁４１には、コネクタ用開口が貫通形成され、そのコネクタ用開口に発光素子実装基板１５のコネクタ１５Ｃが挿通されている。 A plurality (four in this embodiment) of screw holes 41A, 41A,... Are formed through the bottom wall 41 of the heat dissipation member 40 so as to match the number and arrangement of the fixed support columns 35, 35. The light emitting element mounting substrate 15 placed on the bottom wall 41 also has a plurality (four in this embodiment) of screw holes 15A, so as to match the number and arrangement of the fixed support pillars 35, 35. 15A ... are penetrated (refer FIG. 3). The light emitting element mounting substrate 15 and the heat radiating member 40 are fixed to the tips of the fixed support pillars 35, 35..., That is, the large diameter of the housing 13 by screws (not shown) penetrating the screw holes 15A and 41A. It is fixedly supported at the side end. 3 shows three of the four screw holes 15A, 15A,... Formed through the light emitting element mounting substrate 15, and four screw holes 40A, 40A,. • One of them is shown. Although not shown, a connector opening is formed through the bottom wall 41 of the heat radiating member 40, and the connector 15C of the light emitting element mounting substrate 15 is inserted through the connector opening.

図２に示すように、放熱部材４０の周壁４２は、底壁４１から離れるに従って拡径している。詳細には、周壁４２は、底壁４１の外周縁からテーパー状に拡径した第１拡径部４２Ａと、第１拡径部４２Ａの大径側端部から径方向外側に張り出した環状段差部４２Ｂと、環状段差部４２Ｂの外周縁からテーパー状に拡径した第２拡径部４２Ｃとを有している。そして、図９に示すように、第１拡径部４２Ａが樹脂製筐体３０の大径側端部の内側に遊嵌すると共に、第２拡径部４２Ｃが金属製筐体２０の大径側端部における内面露出部２３に接触状態で嵌合し、環状段差部４２Ｂにインナー嵌合筒部３１の大径側端部が突き合わされている。そして、第２拡径部４２Ｃと内面露出部２３とがカシメ固定されて、両者が接触状態に保持されている。 As shown in FIG. 2, the peripheral wall 42 of the heat radiating member 40 increases in diameter as the distance from the bottom wall 41 increases. Specifically, the peripheral wall 42 has a first diameter-expanded portion 42A that is tapered from the outer peripheral edge of the bottom wall 41, and an annular step that protrudes radially outward from the large-diameter side end of the first diameter-expanded portion 42A. 42B and the 2nd enlarged diameter part 42C expanded in the taper shape from the outer periphery of the annular level | step-difference part 42B. Then, as shown in FIG. 9, the first enlarged diameter portion 42 A is loosely fitted inside the large diameter side end portion of the resin casing 30, and the second enlarged diameter portion 42 C is the large diameter of the metal casing 20. The inner end exposed portion 23 is fitted in contact with the inner surface exposed portion 23 in the side end portion, and the large-diameter side end portion of the inner fitting cylindrical portion 31 is abutted against the annular stepped portion 42B. And the 2nd enlarged diameter part 42C and the inner surface exposed part 23 are crimped-fixed, and both are hold | maintained in the contact state.

これにより、金属製筐体２０のうち放熱部材４０より口金１７側の全体が、インナー嵌合筒部３１によって内側から支持されると共に、金属製筐体２０のうちインナー嵌合筒部３１より先の大径側端部が、放熱部材４０によって内側から支持され、金属製筐体２０の外面が局所的に加圧されるような負荷を受けても、その負荷による金属製筐体２０の陥没変形を防ぐことが可能となっている。 As a result, the entire metal casing 20 on the base 17 side of the heat radiating member 40 is supported from the inside by the inner fitting cylinder part 31, and the metal casing 20 is ahead of the inner fitting cylinder part 31. Even if the large-diameter side end of the metal case 20 is supported from the inside by the heat radiating member 40 and the outer surface of the metal case 20 is locally pressurized, the metal case 20 is depressed due to the load. It is possible to prevent deformation.

また、発光素子実装基板１５と金属製筐体２０との間が放熱部材４０によって連絡され、ＬＥＤ１４，１４・・・から発生した熱を金属製筐体２０に伝えて放熱することが可能となっている。ここで、口金１７を下にした状態で電球形電灯１０を使用した場合には、樹脂製筐体３０内の暖気が放熱部材４０のある上方へと移動するので、放熱部材４０が特に効果的となる。 Further, the light emitting element mounting substrate 15 and the metal casing 20 are connected by the heat radiating member 40, and heat generated from the LEDs 14, 14... Can be transmitted to the metal casing 20 to be dissipated. ing. Here, when the light bulb shaped lamp 10 is used with the base 17 down, the warm air in the resin casing 30 moves upward where the heat dissipating member 40 is located, so that the heat dissipating member 40 is particularly effective. It becomes.

図３に示すように、放熱部材４０には、その外縁部の一部を長孔状に切除した位置決め凹部４３が形成されている。放熱部材４０を筐体１３の大径側端部に嵌合装着する際に、位置決め凹部４３と樹脂製筐体３０に形成された位置決めリブ３７（図６参照）とを凹凸係合させると、放熱部材４０の各ビス孔４１Ａ，４１Ａ・・・と、樹脂製筐体３０の固定支持柱３５，３５・・・とが同軸線上に位置決めされるようになっている。 As shown in FIG. 3, the heat radiating member 40 is formed with a positioning recess 43 in which a part of the outer edge is cut into a long hole. When fitting and mounting the heat radiating member 40 to the large-diameter side end of the housing 13, the positioning recess 43 and the positioning rib 37 (see FIG. 6) formed in the resin housing 30 are engaged with each other in an uneven manner. The screw holes 41A, 41A ... of the heat radiating member 40 and the fixed support columns 35, 35 ... of the resin housing 30 are positioned on the coaxial line.

さて、樹脂製筐体３０におけるインナー嵌合筒部３１は、金属製筐体２０のテーパー内面に対して、熱伝導性のよい接着剤層（図示せず）を介して固着されている。即ち、図９に示すように、インナー嵌合筒部３１は、その軸方向の中間位置Ｐ１より口金１７側の部分（以下、「固着支持筒部３１Ａ」という）が、接着剤層によって金属製筐体２０と固着した状態で金属製筐体２０を内側から支持している。 Now, the inner fitting cylinder part 31 in the resin housing 30 is fixed to the tapered inner surface of the metal housing 20 via an adhesive layer (not shown) having good thermal conductivity. That is, as shown in FIG. 9, the inner fitting cylinder portion 31 has a portion (hereinafter, referred to as “fixed support cylinder portion 31 A”) closer to the base 17 than the intermediate position P 1 in the axial direction. The metal housing 20 is supported from the inside while being fixed to the housing 20.

これにより、例えば、電球形電灯１０を照明器具のソケットにねじ込む際に筐体１３全体にトーション負荷がかかったり、ソケットに対して斜めに傾いた状態で挿し込むことで筐体１３にモーメント負荷がかかったり、筐体１３を強く握り過ぎて挟持負荷がかかったりしても、金属製筐体２０の小径側端部及び、金属製筐体２０の軸方向の中間部の変形が防がれる。さらに、上記したように金属製筐体２０の大径側端部は、放熱部材４０によって内側から支持されているので、上記トーション負荷等による金属製筐体２０の大径側端部の変形も防がれる。 Thereby, for example, when the electric bulb-type lamp 10 is screwed into the socket of the lighting fixture, a torsional load is applied to the entire housing 13 or a moment load is applied to the housing 13 by being inserted obliquely with respect to the socket. Even when the housing 13 is gripped excessively or a holding load is applied, deformation of the end portion on the small diameter side of the metal housing 20 and the intermediate portion in the axial direction of the metal housing 20 is prevented. Furthermore, as described above, since the large-diameter side end of the metal casing 20 is supported from the inside by the heat radiating member 40, deformation of the large-diameter side end of the metal casing 20 due to the torsion load or the like is also possible. It is prevented.

ここで、中間位置Ｐ１は、インナー嵌合筒部３１の大径側の端面から小径端端部の側に所定距離Ｌ１だけ離れた放熱部材４０（内面露出部２３）寄りの位置であり、本実施形態では、補強リブ３４の先端面と略同一位置、具体的には、インナー嵌合筒部３１の大径側の端面から約５［ｍｍ］離れた位置となっている。 Here, the intermediate position P1 is a position near the heat radiating member 40 (the inner surface exposed portion 23) that is separated from the end surface on the large diameter side of the inner fitting cylinder portion 31 by a predetermined distance L1 from the end surface on the small diameter side. In the embodiment, substantially the same position as the front end surface of the reinforcing rib 34, specifically, a position that is approximately 5 [mm] away from the end surface on the large diameter side of the inner fitting cylinder portion 31.

そして、インナー嵌合筒部３１はその大径側端部、詳細には、中間位置Ｐ１より放熱部材４０（内面露出部２３）側の部分（以下、「非固着支持筒部３１Ｂ」という）が、金属製筐体２０に固着されていない状態で金属製筐体２０のテーパー内面に宛がわれて、金属製筐体２０を内側から支持している。この非固着支持筒部３１Ｂを設けたことにより、金属製筐体２０の大径側端部は、放熱部材４０を嵌め込む前の状態では、正規の断面形状から歪んだ断面形状へと容易に変形可能となる。 The inner fitting cylindrical portion 31 has an end portion on the large diameter side, specifically, a portion on the heat radiating member 40 (inner surface exposed portion 23) side from the intermediate position P1 (hereinafter referred to as “non-fixed supporting cylindrical portion 31B”). The metal housing 20 is addressed to the tapered inner surface of the metal housing 20 without being fixed to the metal housing 20, and supports the metal housing 20 from the inside. By providing the non-fixed support cylinder portion 31B, the large-diameter side end portion of the metal casing 20 can be easily changed from a regular cross-sectional shape to a distorted cross-sectional shape before the heat dissipation member 40 is fitted. Deformable.

以上が、本実施形態の電球形電灯１０及びその筐体１３の構成であって、次に、電球形電灯１０及び筐体１３の製造方法について説明する。筐体１３の製造方法は以下のようである。 The above is the configuration of the light bulb shaped lamp 10 and the housing 13 thereof according to the present embodiment. Next, a method for manufacturing the light bulb shaped light 10 and the housing 13 will be described. The manufacturing method of the housing 13 is as follows.

まずは、板金をプレス加工して金属製筐体２０を成形する。次いで、成形された金属製筐体２０の内面に接着剤（ここでは、ホットメルト）を塗布する。その際にはマスキングを行って、上記した中間位置Ｐ１を越えて大径側端部の方に接着剤が塗布されないようにしておく。なお、ホットメルトは、電球形電灯１０を通常使用したときの発熱で軟化しないものを使用する。 First, the metal casing 20 is formed by pressing a sheet metal. Next, an adhesive (here, hot melt) is applied to the inner surface of the molded metal casing 20. At that time, masking is performed so that the adhesive is not applied to the end portion on the large diameter side beyond the intermediate position P1. As the hot melt, one that does not soften due to heat generation when the bulb-type electric lamp 10 is normally used is used.

ホットメルトが乾燥したら、成形金型６０（図１０及び図１１参照）に金属製筐体２０をインサートして射出成形（インサート成形）を行う。即ち、図１１に示すように、成形金型６０のキャビティ６０Ａ内に金属製筐体２０を固定保持した状態で、そのキャビティ６０Ａ内に、樹脂製筐体３０を構成する樹脂を射出し、金属製筐体２０と樹脂製筐体３０とが一体に結合した筐体１３を成形する。 When the hot melt is dried, the metal casing 20 is inserted into the molding die 60 (see FIGS. 10 and 11) and injection molding (insert molding) is performed. That is, as shown in FIG. 11, with the metal housing 20 fixedly held in the cavity 60A of the molding die 60, the resin constituting the resin housing 30 is injected into the cavity 60A, and the metal A casing 13 in which the casing 20 and the resin casing 30 are integrally coupled is formed.

成形金型６０は、例えば、筐体１３の外面形状に対応した凹形成形面を有する第１ブロック６１と、筐体１３の内面形状に対応した凸形成形面を有する第２ブロック６２とを含む複数の金型ブロック６１〜６４から構成されている。そして、図１０に示すように、型開き状態で第１ブロック６１の凹形成形面に金属製筐体２０をインサートして成形金型６０を型閉め状態にすると、図１１に示すように、第１ブロック６１と第２ブロック６２との間で、金属製筐体２０の大径側端部が全周に亘って挟持される。 The molding die 60 includes, for example, a first block 61 having a concave formed surface corresponding to the outer surface shape of the housing 13 and a second block 62 having a convex formed surface corresponding to the inner surface shape of the housing 13. A plurality of mold blocks 61 to 64 are included. Then, as shown in FIG. 10, when the metal casing 20 is inserted into the concave forming surface of the first block 61 in the mold open state and the molding die 60 is closed, as shown in FIG. 11, Between the first block 61 and the second block 62, the large-diameter side end of the metal casing 20 is sandwiched over the entire circumference.

また、第２ブロック６２の凸形成形面のうち鍔被覆部３３の内面を成形する部分からは、型閉め方向に複数の押えピン６２Ｔ，６２Ｔが突出しており、それら複数の押えピン６２Ｔ，６２Ｔと第１ブロック６１の凹形成形面との間で結合鍔部２２が挟持される。このように、金属製筐体２０の大径側端部と結合鍔部２２とを挟持することで、金属製筐体２０がキャビティ６０Ａ内で固定される。 In addition, a plurality of presser pins 62T and 62T protrude in the mold closing direction from the portion of the convex forming surface of the second block 62 that molds the inner surface of the collar covering portion 33, and the plurality of presser pins 62T and 62T. And the coupling flange 22 are sandwiched between the concave forming surface of the first block 61. Thus, the metal casing 20 is fixed in the cavity 60 A by sandwiching the large-diameter side end of the metal casing 20 and the coupling flange 22.

この状態でキャビティ６０Ａに樹脂製筐体３０を構成する樹脂を射出すると、キャビティ６０Ａ内に充填された樹脂によって樹脂製筐体３０が成形されると共に、その樹脂の熱で金属製筐体２０の内面に塗布されたホットメルトが溶融し、樹脂製筐体３０のインナー嵌合筒部３１（より詳細には、固着支持筒部３１Ａ）と金属製筐体２０とがホットメルト層（接着剤層）によって固着する。つまり、樹脂製筐体３０の成形及びインナー嵌合筒部３１と金属製筐体２０との固着が、同一工程で行われる。 When the resin constituting the resin casing 30 is injected into the cavity 60A in this state, the resin casing 30 is molded by the resin filled in the cavity 60A, and the heat of the resin causes the metal casing 20 to The hot melt applied to the inner surface is melted, and the inner fitting cylinder part 31 (more specifically, the fixing support cylinder part 31A) of the resin casing 30 and the metal casing 20 are hot melt layers (adhesive layers). ). That is, the molding of the resin casing 30 and the fixing of the inner fitting cylinder portion 31 and the metal casing 20 are performed in the same process.

上記インサート成形によって成形された樹脂製筐体３０のうち、インナー嵌合筒部３１の外面は、金属製筐体２０のテーパー内面によって成形されるので、金属製筐体２０に固着している固着支持筒部３１Ａの外面と、金属製筐体２０に固着していない非固着支持筒部３１Ｂの外面とは面一となる。 Of the resin casing 30 formed by the insert molding, the outer surface of the inner fitting cylinder portion 31 is formed by the tapered inner surface of the metal casing 20, so that the fixing is fixed to the metal casing 20. The outer surface of the support cylinder part 31A and the outer surface of the non-fixed support cylinder part 31B not fixed to the metal casing 20 are flush with each other.

また、第１ブロック６１と第２ブロック６２との間で挟持された金属製筐体２０の大径側端部には、樹脂製筐体３０で被覆されずに内側に露出した内面露出部２３が形成される。また、結合鍔部２２の内面が鍔被覆部３３で覆われると共に、押えピン６２Ｔ，６２Ｔが突き当てられた部分には、鍔被覆部３３を貫通した鍔部露出孔３３Ａ，３３Ａが形成される。 Further, the inner surface exposed portion 23 exposed to the inner side without being covered with the resin casing 30 at the large-diameter side end portion of the metal casing 20 sandwiched between the first block 61 and the second block 62. Is formed. In addition, the inner surface of the coupling collar 22 is covered with the collar covering section 33, and the collar exposure holes 33A and 33A penetrating the collar covering section 33 are formed at the portions where the presser pins 62T and 62T are abutted. .

また、図１１に示す型閉め状態において、金属製筐体２０における結合鍔部２２の内縁部は、第１ブロック６１の凹形成形面からキャビティ６０Ａ内に張り出しており、その張り出した結合鍔部２２の内縁部が樹脂製筐体３０を構成する樹脂に埋設される。即ち、上記したように、樹脂製筐体３０における鍔被覆部３３と外側突出部３２との境界部分に、結合鍔部２２の内縁部が全周に亘って埋設される（図７及び図８参照）。これにより、樹脂製筐体３０と金属製筐体２０とが抜け止め状態で結合される。 Further, in the mold closed state shown in FIG. 11, the inner edge portion of the coupling flange portion 22 in the metal housing 20 projects from the concave forming surface of the first block 61 into the cavity 60 A. The inner edge 22 is embedded in the resin constituting the resin housing 30. That is, as described above, the inner edge portion of the coupling flange portion 22 is embedded in the boundary portion between the flange covering portion 33 and the outer protruding portion 32 in the resin casing 30 (FIGS. 7 and 8). reference). As a result, the resin casing 30 and the metal casing 20 are coupled together in a retaining state.

さらに、結合鍔部２２の内縁部に形成された切り欠き部２４，２４（図４参照）に、樹脂製筐体３０を構成する樹脂が入り込んで硬化することにより、樹脂製筐体３０と金属製筐体２０とが周方向で係合して、両者の相対回転が禁止（回り止め）される。 Further, the resin casing 30 and the metal are formed by the resin constituting the resin casing 30 entering the notches 24 and 24 (see FIG. 4) formed in the inner edge of the coupling flange 22 and curing. The casing 20 is engaged in the circumferential direction, and relative rotation between the two is prohibited (rotation prevention).

キャビティ６０Ａ内の樹脂製筐体３０及びホットメルト層が固まったら、成形金型６０を型開きして筐体１３を抜き取る。以上が筐体１３の製造方法である。 When the resin casing 30 and the hot melt layer in the cavity 60A are solidified, the molding die 60 is opened and the casing 13 is extracted. The above is the method for manufacturing the housing 13.

電球形電灯１０の製造方法は以下のようである。まずは、筐体１３（樹脂製筐体３０）の内側にドライバモジュール１６を組み付ける。具体的には、筐体１３の大径側端部からドライバモジュール１６を挿入し、基板挟持壁３８Ｂ，３８Ｂのスリット部３８Ｓ，３８Ｓに回路基板１６Ｋを挿入して挟持させる。このとき、回路基板１６Ｋの長手方向に延びた両側辺を基板支持壁３９，３９に摺接させながら挿入することで、回路基板１６Ｋをスムーズにスリット部３８Ｓ，３８Ｓに挿入することができる。 The manufacturing method of the light bulb shaped lamp 10 is as follows. First, the driver module 16 is assembled inside the casing 13 (resin casing 30). Specifically, the driver module 16 is inserted from the large-diameter side end of the housing 13, and the circuit board 16K is inserted and held in the slit portions 38S and 38S of the board holding walls 38B and 38B. At this time, the circuit board 16K can be smoothly inserted into the slit portions 38S and 38S by inserting both sides extending in the longitudinal direction of the circuit board 16K while making sliding contact with the board support walls 39 and 39.

次に、ドライバモジュール１６から延びた入力側のリード線１６Ｂ，１６Ｂを、外側突出部３２の末端開口３２Ｆ及びリード線挿通孔３２Ｅから引き出す。次いで、外側突出部３２の外側に口金１７を装着する共に、リード線１６Ｂ，１６Ｂを口金１７の所定部位に接続（ハンダ付け）する。 Next, the lead wires 16B and 16B on the input side extending from the driver module 16 are pulled out from the terminal opening 32F of the outer protrusion 32 and the lead wire insertion hole 32E. Next, the base 17 is mounted on the outer side of the outer protruding portion 32, and the lead wires 16 B and 16 B are connected to a predetermined portion of the base 17 (soldering).

次に、放熱部材４０及び発光素子実装基板１５を筐体１３に取り付ける。具体的には、ドライバモジュール１６の出力側のリード線１６Ａ，１６Ａを、放熱部材４０のコネクタ用開口（図示せず）に通して発光素子実装基板１５のコネクタ１５Ｃに接続しておき、放熱部材４０の位置決め凹部４３と樹脂製筐体３０の位置決めリブ３７とを凹凸係合させて、放熱部材４０を筐体１３（金属製筐体２０）の大径側端部の内側に嵌め込む。 Next, the heat radiating member 40 and the light emitting element mounting substrate 15 are attached to the housing 13. Specifically, the lead wires 16A and 16A on the output side of the driver module 16 are connected to the connector 15C of the light emitting element mounting substrate 15 through the connector opening (not shown) of the heat radiating member 40, and the heat radiating member. The positioning recess 43 of the 40 and the positioning rib 37 of the resin casing 30 are engaged with each other, and the heat radiating member 40 is fitted inside the large-diameter end of the casing 13 (metal casing 20).

ここで上記したように、金属製筐体２０の大径側端部は、放熱部材４０を嵌め込む前の状態では、正規の断面形状から歪んだ断面形状へと容易に変形する。これにより、放熱部材４０の形状のばらつきを金属製筐体２０の大径側端部の変形によって容易に吸収することができる。 As described above, the large-diameter side end of the metal casing 20 is easily deformed from a regular cross-sectional shape to a distorted cross-sectional shape before the heat dissipation member 40 is fitted. Thereby, the dispersion | variation in the shape of the heat radiating member 40 can be easily absorbed by the deformation | transformation of the large diameter side edge part of the metal housing | casing 20. FIG.

次に、放熱部材４０及び発光素子実装基板１５を樹脂製筐体３０にビス止めする。即ち、放熱部材４０上に発光素子実装基板１５を載置して、両者のビス孔１５Ａ，４１Ａの位置を合わせ、それらビス孔１５Ａ，４１Ａに挿入したビスを固定支持柱３５，３５に締め付ける。 Next, the heat radiating member 40 and the light emitting element mounting substrate 15 are screwed to the resin casing 30. That is, the light emitting element mounting substrate 15 is placed on the heat radiating member 40, the positions of the screw holes 15A and 41A are aligned, and the screws inserted into the screw holes 15A and 41A are fastened to the fixed support columns 35 and 35.

放熱部材４０及び発光素子実装基板１５を筐体１３に固定したら、放熱部材４０の周壁４２（第２拡径部４２Ｃ）と金属製筐体２０の大径側端部とをかしめて、両者を接触状態のまま固定する。最後に、筐体１３の大径側端部に透光カバー１２を装着する。以上が電球形電灯１０の製造方法である。 After fixing the heat dissipating member 40 and the light emitting element mounting substrate 15 to the housing 13, the peripheral wall 42 (second enlarged diameter portion 42 C) of the heat dissipating member 40 and the large-diameter side end of the metal housing 20 are caulked. Fix in contact. Finally, the translucent cover 12 is attached to the large-diameter side end of the housing 13. The above is the manufacturing method of the bulb-type electric lamp 10.

このように、本実施形態によれば、金属製筐体２０は、インナー嵌合筒部３１と放熱部材４０とによって、小径側端部から大径側端部まで全体に亘って内側から支持されるので、金属製筐体２０の外面が局所的に加圧されるような負荷を受けても、その負荷による金属製筐体２０の陥没変形を防ぐことができる。 As described above, according to the present embodiment, the metal casing 20 is supported from the inner side by the inner fitting cylinder portion 31 and the heat radiating member 40 from the small diameter side end portion to the large diameter side end portion. Therefore, even if it receives the load which the outer surface of the metal housing | casing 20 presses locally, the depression deformation of the metal housing | casing 20 by the load can be prevented.

また、インナー嵌合筒部３１のうち軸方向の中間位置Ｐ１より口金１７側の固着支持筒部３１Ａが、金属製筐体２０に固着した状態で金属製筐体２０を内側から支持するので、電球形電灯１０の筐体１３全体に、トーション負荷やモーメント負荷や挟持負荷がかかっても、金属製筐体２０の小径側端部及び、金属製筐体２０の軸方向の中間部の変形が防がれる。また、金属製筐体２０の大径側端部は、放熱部材４０によって内側から支持されているので、上記トーション負荷等による金属製筐体２０の大径側端部の変形も防がれる。即ち、金属製筐体２０にインナー嵌合筒部３１を固着せずに組み付けただけの従来のものに比べて強度が高い電球形電灯１０及びその筐体１３を提供することが可能になる。 Moreover, since the fixing support cylinder part 31A on the base 17 side from the intermediate position P1 in the axial direction of the inner fitting cylinder part 31 supports the metal casing 20 from the inside while being fixed to the metal casing 20, Even if a torsional load, moment load, or pinching load is applied to the entire housing 13 of the bulb-shaped electric lamp 10, the end of the small diameter side of the metal housing 20 and the intermediate portion in the axial direction of the metal housing 20 are deformed. It is prevented. Further, since the large-diameter end of the metal casing 20 is supported from the inside by the heat radiating member 40, deformation of the large-diameter end of the metal casing 20 due to the torsion load or the like can be prevented. That is, it is possible to provide the bulb-type electric lamp 10 and its casing 13 having higher strength than the conventional one in which the inner fitting cylinder portion 31 is assembled without being fixed to the metal casing 20.

そして、インナー嵌合筒部３１のうち軸方向の中間位置Ｐ１より放熱部材４０側の非固着支持筒部３１Ｂが、金属製筐体２０に固着されていない状態で金属製筐体２０を内側から支持するので、金属製筐体２０の大径側端部は、放熱部材４０を嵌め込む前の状態では、正規の断面形状から歪んだ断面形状へと容易に変形する。これにより、放熱部材４０の形状のばらつきを金属製筐体２０の大径側端部の変形によって容易に吸収することができ、ＮＧ品の発生を抑えて生産性を高くすることができる。即ち、本実施形態によれば、金属製筐体２０にインナー嵌合筒部３１の全体を固着して組み付けた従来のものに比べて、生産性が高い電球形電灯１０及びその筐体１３を提供することが可能になる。 And, the non-fixed support cylinder part 31B on the heat radiating member 40 side from the axial intermediate position P1 in the inner fitting cylinder part 31 is not fixed to the metal casing 20 from the inside. Since it supports, the large diameter side edge part of the metal housing | casing 20 will deform | transform easily from the regular cross-sectional shape to the distorted cross-sectional shape in the state before fitting the heat radiating member 40. FIG. Thereby, the dispersion | variation in the shape of the heat radiating member 40 can be easily absorbed by deformation | transformation of the large diameter side edge part of the metal housing | casing 20, and generation | occurrence | production of NG goods can be suppressed and productivity can be made high. That is, according to the present embodiment, the light bulb shaped lamp 10 and its casing 13 are more productive than the conventional one in which the entire inner fitting cylindrical portion 31 is fixedly assembled to the metal casing 20. It becomes possible to provide.

また、樹脂製筐体３０は、金属製筐体２０に対するインサート成形品であるから、筐体１３の製造に際して、金属製筐体２０とは別に樹脂製筐体３０を用意しておく必要が無くなり、部品の調達、保管、在庫管理等に係る負荷（手間やコスト）を軽減することができる。 Further, since the resin casing 30 is an insert-molded product for the metal casing 20, it is not necessary to prepare the resin casing 30 separately from the metal casing 20 when manufacturing the casing 13. In addition, it is possible to reduce the load (labor and cost) related to parts procurement, storage, inventory management, and the like.

また、インナー嵌合筒部３１のうち固着支持筒部３１Ａの外面と非固着支持筒部３１Ｂの外面とを面一にしたので、インナー嵌合筒部３１を成形するための金型形状を簡素化することができる。換言すれば、固着支持筒部３１Ａと非固着支持筒部３１Ｂとで外面形状をあえて異ならせなくても、接着剤の塗布範囲をインナー嵌合筒部３１の軸方向の中間位置Ｐ１より口金１７側の部分に限定することで、固着支持筒部３１Ａと非固着支持筒部３１Ｂとに分けることができる。 In addition, since the outer surface of the fixed support cylindrical portion 31A and the outer surface of the non-fixed support cylindrical portion 31B in the inner fitting cylindrical portion 31 are flush with each other, the mold shape for molding the inner fitting cylindrical portion 31 is simplified. Can be In other words, the adhesive application range can be set from the intermediate position P1 in the axial direction of the inner fitting cylindrical portion 31 to the base 17 without changing the outer shape of the fixed supporting cylindrical portion 31A and the non-fixing supporting cylindrical portion 31B. By limiting to the portion on the side, it can be divided into a fixed support cylindrical portion 31A and a non-fixed support cylindrical portion 31B.

なお、本実施形態のように、金属製筐体２０とインナー嵌合筒部３１とを固着させた筐体１３は、固着させていない筐体に比べて、電球形電灯１０の内部の温度上昇を抑える（効果的に放熱を行う）ことが可能になる。 Note that, as in the present embodiment, the case 13 in which the metal case 20 and the inner fitting cylinder portion 31 are fixed is increased in temperature inside the bulb-type lamp 10 compared to the case in which the metal case 20 is not fixed. Can be suppressed (effectively radiating heat).

［他の実施形態］
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。 [Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

（１）上記実施形態では、樹脂製筐体３０のインナー嵌合筒部３１の外面と金属製筐体２０の内面とを接着剤によって固着していたが、金属製筐体２０の内面に細かな凹凸面を形成してインサート成形を行い、樹脂製筐体３０を構成する樹脂が金属製筐体２０の内面の凹凸に入り込んで固化することによるアンカー効果によって、インナー嵌合筒部３１の外面と金属製筐体２０の内面とを固着させてもよい。 (1) In the above embodiment, the outer surface of the inner fitting cylinder portion 31 of the resin casing 30 and the inner surface of the metal casing 20 are fixed with an adhesive, but the inner surface of the metal casing 20 is fine. An outer surface of the inner fitting cylinder portion 31 is formed by an anchor effect by forming a rough surface and performing insert molding, and the resin constituting the resin housing 30 enters and hardens the inner surface of the metal housing 20. And the inner surface of the metal casing 20 may be fixed.

（２）上記実施形態では、筐体１３を構成する金属製筐体２０と樹脂製筐体３０とがインサート成形によって一体化されていたが、金属製筐体２０と樹脂製筐体３０とを別々に製造しておき、金属製筐体２０の大径側端部から樹脂製筐体３０を挿入して金属製筐体２０の内側にインナー嵌合筒部３１とを嵌合させると共に、これらを接着剤によって固着させてもよい。この場合の接着剤は、ホットメルトに限定するものではなく、樹脂製筐体３０の材質等に応じて適宜選択すればよい。 (2) In the above embodiment, the metal casing 20 and the resin casing 30 constituting the casing 13 are integrated by insert molding. However, the metal casing 20 and the resin casing 30 are integrated with each other. These are manufactured separately, and the resin casing 30 is inserted from the large-diameter side end of the metal casing 20 to fit the inner fitting cylinder portion 31 inside the metal casing 20, and these May be fixed by an adhesive. The adhesive in this case is not limited to hot melt, and may be appropriately selected according to the material of the resin casing 30 and the like.

（３）上記実施形態では、インナー嵌合筒部３１の筒壁の肉厚がほぼ一定であったが、非固着支持筒部３１Ｂの内面側を段付き状に凹ませて、その肉厚を固着支持筒部３１Ａの肉厚よりも薄くしてもよい。 (3) In the above embodiment, the wall thickness of the inner fitting cylinder portion 31 is substantially constant. However, the inner surface side of the non-adhering support cylinder portion 31B is recessed in a stepped shape, and the thickness is reduced. You may make it thinner than the thickness of 31 A of fixed support cylinder parts.

（４）上記実施形態では、発光素子実装基板１５の裏面に放熱部材４０を宛がって、その放熱部材４０の外縁部を金属製筐体２０の内面露出部２３に接触させていたが、発光素子実装基板１５をセラミックス基板や金属ベース基板（例えば、アルミベース基板）等の高熱伝導性の基板で構成してその外縁部を直接、金属製筐体２０の大径側端部（内面露出部２３）に接触させた構成でもよい。即ち、本発明に係る「内蓋体」は、発光素子実装基板１５のみで構成されていてもよい。 (4) In the above embodiment, the heat radiating member 40 is assigned to the back surface of the light emitting element mounting substrate 15, and the outer edge portion of the heat radiating member 40 is in contact with the inner surface exposed portion 23 of the metal housing 20. The light-emitting element mounting substrate 15 is composed of a highly heat conductive substrate such as a ceramic substrate or a metal base substrate (for example, an aluminum base substrate), and the outer edge thereof is directly connected to the large-diameter side end (inner surface exposed) of the metal housing 20 The structure may be in contact with the portion 23). In other words, the “inner lid” according to the present invention may be composed of only the light emitting element mounting substrate 15.

（５）上記実施形態では、金属製筐体２０に結合鍔部２２を形成して、その結合鍔部２２を樹脂製筐体３０を構成する樹脂に埋設していたが、金属製筐体２０と樹脂製筐体３０（インナー嵌合筒部３１）との固着強度が十分に確保できれば、このような埋設構造を備えていなくてもよい。 (5) In the above embodiment, the coupling flange 22 is formed in the metal casing 20, and the coupling flange 22 is embedded in the resin constituting the resin casing 30. Such a buried structure may not be provided as long as the fixing strength between the resin casing 30 and the resin casing 30 (inner fitting cylinder portion 31) can be sufficiently secured.

（６）上記実施形態では、金属製筐体２０と樹脂製筐体３０とを回り止めするために、結合鍔部２２の内縁部に切り欠き部２４，２４を形成していたが、金属製筐体２０と樹脂製筐体３０（インナー嵌合筒部３１）との固着強度が十分に確保できれば、切り欠き部を設けなくてもよい。 (6) In the above embodiment, the notches 24 and 24 are formed on the inner edge of the coupling flange 22 in order to prevent the metal casing 20 and the resin casing 30 from rotating. If the fixing strength between the housing 20 and the resin housing 30 (inner fitting cylinder portion 31) can be sufficiently secured, the notch portion may not be provided.

（７）上記実施形態では、樹脂製筐体３０のうち鍔被覆部３３に鍔部露出孔３３Ａを貫通形成して金属製筐体２０における結合鍔部２２を筐体１３の内側に露出させていたが、樹脂製筐体３０のうちインナー嵌合筒部３１を貫通した露出孔を設けて金属製筐体２０のテーパー内面を筐体１３の内側に露出させてもよい。 (7) In the above-described embodiment, the flange cover hole 33 of the resin casing 30 is formed with the flange exposure hole 33 A penetrating to expose the coupling flange 22 in the metal casing 20 to the inside of the casing 13. However, an exposure hole that penetrates the inner fitting cylinder portion 31 in the resin casing 30 may be provided so that the tapered inner surface of the metal casing 20 is exposed inside the casing 13.

（８）上記実施形態では、金属製筐体２０及びインナー嵌合筒部３１がテーパー形状（円錐形）になっていたが、これに限定するものではなく、小径側端部から大径側端部に向かって湾曲しながら拡径したラッパ形又は砲弾形でもよい。 (8) In the said embodiment, although the metal housing | casing 20 and the inner fitting cylinder part 31 were taper shape (conical shape), it is not limited to this, From a small diameter side edge part to a large diameter side edge It may be a trumpet shape or a cannonball shape whose diameter is increased while being curved toward the portion.

（９）上記実施形態では、本発明に係る発光素子としてＬＥＤ１４を例示したが、発光素子はＬＥＤに限定するものではなく、例えば、エレクトロルミネッセンスであってもよい。 (9) In the above embodiment, the LED 14 is exemplified as the light emitting element according to the present invention. However, the light emitting element is not limited to the LED, and may be, for example, electroluminescence.

（１０）上記施形態の樹脂製筐体３０の内部に形成された補強リブ３４や固定支持柱３５の配置や形状及び、ドライバモジュール１６の配置や保持構造は、上記実施形態の構成に限定するものではなく、適宜変更してもよい。 (10) The arrangement and shape of the reinforcing ribs 34 and the fixed support columns 35 formed in the resin casing 30 of the above embodiment and the arrangement and holding structure of the driver module 16 are limited to the configuration of the above embodiment. It is not a thing and you may change suitably.

１０電球形電灯
１３筐体
１４ＬＥＤ（発光素子）
１５発光素子実装基板
１７口金
２０金属製筐体
２３内面露出部
３０樹脂製筐体
３１インナー嵌合筒部
３１Ａ固着支持筒部
３１Ｂ非固着支持筒部
４０放熱部材
Ｐ１中間位置 10 Light Bulb Shape Light 13 Case 14 LED (Light Emitting Element)
DESCRIPTION OF SYMBOLS 15 Light emitting element mounting board 17 Base 20 Metal housing | casing 23 Inner surface exposed part 30 Resin housing | casing 31 Inner fitting cylinder part 31A Fixed support cylinder part 31B Non-adhesion support cylinder part 40 Heat radiation member P1 Intermediate position

Claims

A cylindrical shape having a diameter increased from a base end portion on the base side of the bulb-type electric lamp toward a tip portion on the side opposite to the base, and an inner lid body including a light emitting element mounting substrate is provided inside the large diameter side end portion. A metal housing to be fitted, and
The light bulb shaped electric lamp has a cylindrical shape whose diameter is expanded from the base end portion toward the tip end portion, and is fitted inside the metal casing, and the large-diameter side end portion is abutted against the inner lid body. In the case of a light bulb shaped electric lamp provided with a resin casing having an inner fitting cylinder portion,
While the inner fitting cylinder part is a fixed support cylinder part that supports the metal casing from the inside in a state of being fixed to the metal casing from the intermediate position in the axial direction, The inner lid side portion of the inner fitting cylindrical portion is a non-fixed support cylindrical portion that supports the metal casing from the inside in a state where it is not fixed to the metal casing. The case of a bulb-type electric light

The case of the light bulb shaped electric lamp according to claim 1, wherein an adhesive layer is provided between the fixed support tube portion and the metal case.

The resin casing is an insert molded product for the metal casing,
The case of a light bulb shaped electric lamp according to claim 2, wherein the adhesive layer is a hot melt layer applied to the metal case.

The casing of the light bulb shaped electric lamp according to any one of claims 1 to 3, wherein an outer surface of the fixed support tube portion and an outer surface of the non-fixed support tube portion are flush with each other.

A light bulb shaped light comprising the light bulb shaped light housing according to any one of claims 1 to 4.