JP6605984B2 - Illumination apparatus, image reading apparatus, and image forming apparatus - Google Patents

Illumination apparatus, image reading apparatus, and image forming apparatus Download PDF

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JP6605984B2
JP6605984B2 JP2016027286A JP2016027286A JP6605984B2 JP 6605984 B2 JP6605984 B2 JP 6605984B2 JP 2016027286 A JP2016027286 A JP 2016027286A JP 2016027286 A JP2016027286 A JP 2016027286A JP 6605984 B2 JP6605984 B2 JP 6605984B2
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light emitting
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康裕 数藤
健二 中西
正一 福留
拓樹 車
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Sharp Corp
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Description

本発明は、基板に搭載された発光素子から出射される光を導光部材により導光する照明装置、画像読取装置及び画像形成装置に関する。   The present invention relates to an illumination device, an image reading device, and an image forming device that guide light emitted from a light emitting element mounted on a substrate by a light guide member.

複写機、ファクシミリ装置及びデジタル複合機等の画像形成装置に備えられる画像読取装置や、ネットワーク等の通信手段を介してコンピュータに接続される画像読取装置に用いることができる照明装置として、例えば、基板に搭載された発光ダイオード(LED:Light Emitting Diode)等の発光素子から出射される光を導光部材により導光する照明装置がある。   As an illumination device that can be used in an image reading apparatus provided in an image forming apparatus such as a copying machine, a facsimile machine, and a digital multifunction peripheral, or an image reading apparatus connected to a computer via a communication means such as a network, for example, a substrate There is a lighting device that guides light emitted from a light emitting element such as a light emitting diode (LED) mounted on the light guide member by a light guide member.

このような照明装置では、通常は、導光部材は、発光素子からの光を光入射面で入射し、光入射面で入射した光を光出射面から出射するようになっており、発光素子は、導光部材の光入射面に近接して設けられている。   In such an illuminating device, the light guide member normally enters light from the light emitting element at the light incident surface and emits light incident at the light incident surface from the light emitting surface. Is provided close to the light incident surface of the light guide member.

特開2009−32664号公報JP 2009-32664 A

かかる照明装置においては、発光素子の発光面と導光部材の光入射面との間の距離を一定に保つ必要がある。例えば、発光素子の発光面と導光部材の光入射面との間の距離が近すぎると、発光素子からの光が導光部材の光入射面で正反射する光が多くなる一方、該距離が遠すぎると、それだけ発光素子からの光のロス(損失)が発生し、何れにしても発光素子から導光部材の光入射面に入射される光の光量の低下、ひいては、導光部材の光出射面から出射される光の光量の低下を招く。ここで、発光素子の発光面と導光部材の光入射面との間の距離は、それには限定されないが、例えば、0.2mm〜0.5mm程度を例示できる。   In such a lighting device, the distance between the light emitting surface of the light emitting element and the light incident surface of the light guide member needs to be kept constant. For example, if the distance between the light emitting surface of the light emitting element and the light incident surface of the light guide member is too close, the light from the light emitting element is more regularly reflected by the light incident surface of the light guide member, while the distance If the distance is too far, a loss of light from the light emitting element is generated, and in any case, the amount of light incident on the light incident surface of the light guide member from the light emitting element is reduced. This causes a decrease in the amount of light emitted from the light exit surface. Here, although the distance between the light emission surface of a light emitting element and the light-incidence surface of a light guide member is not limited to it, For example, about 0.2 mm-0.5 mm can be illustrated.

一方、導光部材は、温度や湿度等の外的要因により伸縮することがある。そうすると、発光素子の発光面と導光部材の光入射面との間の距離が変化し、これにより、発光素子から導光部材の光入射面に入射される光の光量が低下し、ひいては、導光部材の光出射面から出射される光の光量が低下する。さらに、導光部材が膨張する場合には、導光部材の光入射面が発光素子の発光面に接触して導光部材が発光素子を圧迫することにより発光素子を破損することがある。このことは、導光部材のサイズ(特に長手方向のサイズ)が大きくなる程、単位距離当たりの伸縮量が大きくなり、特に顕著になる。   On the other hand, the light guide member may expand and contract due to external factors such as temperature and humidity. Then, the distance between the light emitting surface of the light emitting element and the light incident surface of the light guide member is changed, thereby reducing the amount of light incident on the light incident surface of the light guide member from the light emitting element. The amount of light emitted from the light exit surface of the light guide member is reduced. Furthermore, when the light guide member expands, the light incident surface of the light guide member may come into contact with the light emitting surface of the light emitting element, and the light guide member may press the light emitting element to damage the light emitting element. This becomes particularly significant as the size of the light guide member (particularly the size in the longitudinal direction) increases, and the amount of expansion / contraction per unit distance increases.

この点に関し、特許文献1には、光源(発光素子)と導光板(導光部材)とを、光源と導光板の光入射面との間の距離を一定にして固定して一体化する固定手段と、固定手段によって一体化された光源および導光板を収納する筐体と、筐体と固定手段との間に設けられ、導光板の光入射面から光源に向かう方向において、導光板の伸縮に応じて、光源と導光板とを一体化し、光源と導光板の光入射面との間の距離を一定にしたまま、筐体に対して固定手段を摺動させるすべり機構とを備えた照明装置が提案されている。   In this regard, Patent Document 1 discloses a fixing in which a light source (light emitting element) and a light guide plate (light guide member) are fixed and integrated with a constant distance between the light source and the light incident surface of the light guide plate. Means, a housing for storing the light source and the light guide plate integrated by the fixing means, and the expansion and contraction of the light guide plate in the direction from the light incident surface of the light guide plate toward the light source. The light source and the light guide plate are integrated with each other, and the lighting device has a sliding mechanism that slides the fixing means with respect to the housing while keeping the distance between the light source and the light incident surface of the light guide plate constant. A device has been proposed.

しかしながら、特許文献1に記載の照明装置では、導光部材の伸縮に伴い、導光部材を発光素子と共に固定した固定手段の全体をすべり機構により筐体に対して摺動するようにする構成としているが、このような構成であっても、発光素子の発光面と導光部材の光入射面との間の距離が変化することあり、依然として、前記した課題が残る。   However, in the illumination device described in Patent Document 1, as the light guide member expands and contracts, the entire fixing means that fixes the light guide member together with the light emitting element is slid with respect to the housing by the sliding mechanism. However, even with such a configuration, the distance between the light emitting surface of the light emitting element and the light incident surface of the light guide member may change, and the above-described problem still remains.

すなわち、特許文献1に記載の照明装置は、発光素子を搭載する基板と導光部材との間の距離を一定に保っているものの、発光素子の基板からの浮き(例えば半田浮き)を考慮しておらず、発光素子の基板からの浮きがあった場合、発光素子の発光面と導光部材の光入射面との間の距離が変化するため、発光素子から導光部材の光入射面に入射される光の光量が低下し、ひいては、導光部材の光出射面から出射される光の光量が低下する。さらに、導光部材の光入射面が発光素子の発光面に接触して導光部材が発光素子を圧迫することにより発光素子を破損することがある。   That is, the lighting device described in Patent Document 1 takes into account the floating of the light emitting element from the substrate (for example, solder floating), although the distance between the substrate on which the light emitting element is mounted and the light guide member is kept constant. If the light emitting element is lifted from the substrate, the distance between the light emitting surface of the light emitting element and the light incident surface of the light guide member changes. The amount of incident light decreases, and consequently the amount of light emitted from the light exit surface of the light guide member decreases. Furthermore, the light incident surface of the light guide member may come into contact with the light emitting surface of the light emitting element and the light guide member may press the light emitting element to damage the light emitting element.

そこで、本発明は、発光素子の基板からの浮きを考慮した上で導光部材の伸縮に伴う導光部材の光入射面に入射される光の光量の低下、ひいては、導光部材の光出射面から出射される光の光量の低下、さらには発光素子の破損を効果的に防止することができる照明装置、画像読取装置及び画像形成装置を提供することを目的とする。   Therefore, the present invention considers the floating of the light emitting element from the substrate, and reduces the amount of light incident on the light incident surface of the light guide member as the light guide member expands and contracts. It is an object of the present invention to provide an illumination device, an image reading device, and an image forming device that can effectively prevent a decrease in the amount of light emitted from the surface and damage of the light emitting element.

前記課題を解決するために、本発明に係る照明装置は、発光素子と、前記発光素子を搭載する基板と、前記発光素子から出射される光を導光する導光部材とを備えた照明装置であって、前記発光素子と前記導光部材との間に前記発光素子と前記導光部材とを予め定めた所定の距離に維持する介在部材が設けられており、前記導光部材を取り付ける取付部材と、前記基板に挿通して前記基板が前記取付部材に対して前記導光部材側及び前記導光部材側とは反対側への移動自在な状態で前記取付部材に螺合する螺子部材と、前記螺子部材における頭部及び前記基板の間に設けられる付勢部材とを備えることを特徴とする。また、本発明に係る画像読取装置は、前記本発明に係る照明装置を備えたことを特徴とする。また、本発明に係る画像形成装置は、前記本発明に係る画像読取装置を備えたことを特徴とする。 In order to solve the above problems, an illumination device according to the present invention includes a light emitting element, a substrate on which the light emitting element is mounted, and a light guide member that guides light emitted from the light emitting element. An interposition member is provided between the light emitting element and the light guide member to maintain the light emitting element and the light guide member at a predetermined distance, and the light guide member is attached to the light guide element. A screw member inserted into the board and screwed into the mounting member in a state where the board is movable to the light guide member side and the side opposite to the light guide member side with respect to the mounting member; And an urging member provided between the head of the screw member and the substrate . In addition, an image reading apparatus according to the present invention includes the illumination device according to the present invention. The image forming apparatus according to the present invention includes the image reading apparatus according to the present invention.

本発明において、前記介在部材は、前記発光素子に対する前記発光素子から出射される光の光軸方向に直交する方向への移動を規制する構成とされている態様を例示できる。   In the present invention, it is possible to exemplify an aspect in which the interposed member is configured to restrict movement of light emitted from the light emitting element in a direction perpendicular to the optical axis direction with respect to the light emitting element.

本発明において、前記介在部材は、前記発光素子の外周側面の少なくとも発光面に連接した周縁部に接触する構成とされている態様を例示できる。   In the present invention, it is possible to exemplify an embodiment in which the interposition member is configured to be in contact with a peripheral edge connected to at least the light emitting surface of the outer peripheral side surface of the light emitting element.

本発明において、前記介在部材は、前記発光素子の発光面の少なくとも外周縁部に接触する構成とされている態様を例示できる。   In the present invention, it is possible to exemplify an aspect in which the interposition member is configured to be in contact with at least the outer peripheral edge portion of the light emitting surface of the light emitting element.

本発明では、前記介在部材には、前記発光素子からの光を前記導光部材に向けて通過させる開口が設けられている態様を例示できる。   In the present invention, it is possible to exemplify an aspect in which the interposition member is provided with an opening through which light from the light emitting element passes toward the light guide member.

本発明において、前記介在部材を介した前記発光素子及び前記発光素子を搭載した前記基板の移動を許容し、且つ、前記導光部材に対して前記介在部材、及び、前記発光素子を搭載した前記基板を前記発光素子と前記導光部材との間の前記所定の距離を維持した状態で保持する構成とされている態様を例示できる。   In the present invention, the light emitting element via the interposition member and the substrate on which the light emitting element is mounted are allowed to move, and the interposition member and the light emitting element are mounted on the light guide member. A mode in which the substrate is held in a state where the predetermined distance between the light emitting element and the light guide member is maintained can be exemplified.

本発明によると、発光素子の基板からの浮きを考慮した上で導光部材の伸縮に伴う導光部材の光入射面に入射される光の光量の低下、ひいては、導光部材の光出射面から出射される光の光量の低下、さらには発光素子の破損を効果的に防止することが可能となる。   According to the present invention, the light amount of the light incident on the light incident surface of the light guide member is reduced due to expansion and contraction of the light guide member in consideration of the floating of the light emitting element from the substrate, and thus the light output surface of the light guide member It is possible to effectively prevent a decrease in the amount of light emitted from the light source and further damage to the light emitting element.

本発明の実施の形態に係る照明装置を適用した画像読取装置を備えた画像形成装置の概略構成を示す正面図である。1 is a front view illustrating a schematic configuration of an image forming apparatus including an image reading apparatus to which an illumination device according to an embodiment of the present invention is applied. 図1に示す画像読取装置における原稿読取部及び自動原稿送り装置の縦断面図である。FIG. 2 is a longitudinal sectional view of a document reading unit and an automatic document feeder in the image reading apparatus shown in FIG. 1. 本実施の形態に係る照明装置の概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the illuminating device which concerns on this Embodiment. 図3に示すA−A線に沿った照明装置の概略断面図である。It is a schematic sectional drawing of the illuminating device along the AA line shown in FIG. 本実施の形態に係る照明装置の長手方向における一端部を示す概略平面図である。It is a schematic plan view which shows the one end part in the longitudinal direction of the illuminating device which concerns on this Embodiment. 図5に示すB−B線に沿った照明装置の長手方向における一端部を示す概略断面図である。It is a schematic sectional drawing which shows the one end part in the longitudinal direction of the illuminating device along the BB line shown in FIG. 図6に示す導光部材と発光素子を搭載した基板との間の部分を拡大して示す概略断面図である。It is a schematic sectional drawing which expands and shows the part between the light guide member shown in FIG. 6, and the board | substrate which mounted the light emitting element. 図3に示すC−C線に沿った照明装置の長手方向における一端部を示す概略断面図である。It is a schematic sectional drawing which shows the one end part in the longitudinal direction of the illuminating device along CC line | wire shown in FIG. 導光部材と介在部材と発光素子を搭載した基板との配置関係を示す分解斜視図である。It is a disassembled perspective view which shows the arrangement | positioning relationship with the board | substrate which mounted the light guide member, the interposed member, and the light emitting element. 図5から図9に示す発光素子を介在部材及び導光部材から離間させた状態を示す斜視図である。FIG. 10 is a perspective view illustrating a state in which the light emitting element illustrated in FIGS. 5 to 9 is separated from the interposition member and the light guide member. 第3実施形態の一例を説明するための説明図であって、照明装置の長手方向における一端部を示す概略断面図である。It is explanatory drawing for demonstrating an example of 3rd Embodiment, Comprising: It is a schematic sectional drawing which shows the one end part in the longitudinal direction of an illuminating device. 第3実施形態の他の例を説明するための説明図であって、照明装置の長手方向における一端部を示す概略断面図である。It is explanatory drawing for demonstrating the other example of 3rd Embodiment, Comprising: It is a schematic sectional drawing which shows the one end part in the longitudinal direction of an illuminating device. 第3実施形態の他の例において放熱部材が基台に取り付けられている構成を示す側面図であって、(a)は、弾性部材の一例としてコイルバネを用いた例を示す図であり、(b)は、弾性部材の他の例として波ワッシャーを用いた例を示す図である。It is a side view which shows the structure by which the thermal radiation member is attached to the base in the other example of 3rd Embodiment, (a) is a figure which shows the example which used the coil spring as an example of an elastic member, ( (b) is a figure which shows the example which used the wave washer as another example of an elastic member.

以下、本発明に係る実施の形態について図面を参照しながら説明する。   Embodiments according to the present invention will be described below with reference to the drawings.

[画像形成装置]
図1は、本発明の実施の形態に係る照明装置200を適用した画像読取装置110を備えた画像形成装置100の概略構成を示す正面図である。なお、図1並びに後述する図2から図13において、符号Xは、主走査方向(奥行き方向)を示しており、符号Yは、主走査方向Xに直交する副走査方向(左右方向)を示しており、符号Zは、主走査方向X及び副走査方向の双方に直交する上下方向(鉛直方向)を示している。
[Image forming apparatus]
FIG. 1 is a front view showing a schematic configuration of an image forming apparatus 100 including an image reading device 110 to which an illumination device 200 according to an embodiment of the present invention is applied. In FIG. 1 and FIGS. 2 to 13 described later, the symbol X indicates the main scanning direction (depth direction), and the symbol Y indicates the sub-scanning direction (left-right direction) orthogonal to the main scanning direction X. The symbol Z indicates the vertical direction (vertical direction) orthogonal to both the main scanning direction X and the sub-scanning direction.

図1に示すように、画像形成装置100は、画像読取装置110及び画像形成装置本体120を備えている。   As shown in FIG. 1, the image forming apparatus 100 includes an image reading apparatus 110 and an image forming apparatus main body 120.

画像読取装置110は、画像形成装置本体120の上部に設けられており、原稿読取部111と自動原稿送り装置112とを備えている。原稿読取部111は、原稿Gが載置される原稿載置台111aと、搬送される原稿Gの読取位置Rを規定する透明ガラス等の原稿読取部材111bを備えている。原稿読取部111は、原稿載置台111aに載置された原稿Gの画像を読み取るか、或いは、自動原稿送り装置112にて搬送される原稿Gの画像を原稿読取部材111bの読取位置Rで読み取るようになっている。   The image reading apparatus 110 is provided on the upper part of the image forming apparatus main body 120 and includes a document reading unit 111 and an automatic document feeder 112. The document reading unit 111 includes a document placing table 111a on which the document G is placed, and a document reading member 111b such as transparent glass that defines a reading position R of the document G to be conveyed. The document reading unit 111 reads an image of the document G placed on the document placement table 111a or reads an image of the document G conveyed by the automatic document feeder 112 at the reading position R of the document reading member 111b. It is like that.

原稿載置台111aは、透明ガラス等の板状の透明体で形成され、原稿読取部111の上側に設けられている。自動原稿送り装置112は、読取位置Rに向けて原稿Gを自動で搬送する。また、自動原稿送り装置112は、副走査方向Yに沿った軸線回りに回動自在に(例えばヒンジによって軸支され)、原稿読取部111に対して開閉可能に設けられている。すなわち、自動原稿送り装置112は、原稿載置台111a上を開放する一方、原稿載置台111a上に載置された原稿Gを上から押さえる原稿カバーを兼ねている。   The document placing table 111 a is formed of a plate-like transparent body such as transparent glass, and is provided on the upper side of the document reading unit 111. The automatic document feeder 112 automatically conveys the document G toward the reading position R. Further, the automatic document feeder 112 is provided so as to be openable and closable with respect to the document reading unit 111 so as to be rotatable about an axis along the sub-scanning direction Y (for example, supported by a hinge). In other words, the automatic document feeder 112 also serves as a document cover that opens the document table 111a and presses the document G placed on the document table 111a from above.

画像形成装置100は、画像読取装置110により読み取った原稿Gの画像又は外部から受信した画像データに応じて、記録用紙等の記録シートPに対して多色及び単色の画像を形成する。   The image forming apparatus 100 forms multicolor and single color images on a recording sheet P such as a recording sheet in accordance with an image of the original G read by the image reading apparatus 110 or image data received from the outside.

画像形成装置本体120は、露光ユニット1、現像器2〜2、感光体ドラム3〜3、クリーナユニット4〜4、帯電器5〜5、中間転写ベルトユニット6、定着ユニット7及び2次転写ユニット10を備えている。画像形成装置100において扱われる画像データは、ブラック(K)、シアン(C)、マゼンタ(M)、イエロー(Y)等の複数色(この例では4色)を用いたカラー画像に応じたものである。従って、この例では、現像器2〜2、感光体ドラム3〜3、クリーナユニット4〜4、帯電器5〜5は、各色に応じた4種類の潜像を形成するようにそれぞれ4個ずつ設けられ、それぞれ、ブラック、シアン、マゼンタ、イエローに設定され、これらによって4つの画像ステーションが構成されている。   The image forming apparatus main body 120 includes an exposure unit 1, developing units 2 and 2, photosensitive drums 3 and 3, cleaner units 4 to 4, chargers 5 to 5, an intermediate transfer belt unit 6, a fixing unit 7, and a secondary transfer unit. 10 is provided. The image data handled in the image forming apparatus 100 corresponds to a color image using a plurality of colors (four colors in this example) such as black (K), cyan (C), magenta (M), and yellow (Y). It is. Therefore, in this example, each of the developing units 2 to 2, the photosensitive drums 3 to 3, the cleaner units 4 to 4, and the charging units 5 to 5 are each four so as to form four types of latent images corresponding to each color. These are provided and set to black, cyan, magenta, and yellow, respectively, and these constitute four image stations.

画像形成装置100は、さらに、給紙カセット11、手差し給紙カセット12、排紙トレイ13を備えている。   The image forming apparatus 100 further includes a paper feed cassette 11, a manual paper feed cassette 12, and a paper discharge tray 13.

[画像読取装置]
図2は、図1に示す画像読取装置110における原稿読取部111及び自動原稿送り装置112の縦断面図である。
[Image reading device]
2 is a longitudinal sectional view of the document reading unit 111 and the automatic document feeder 112 in the image reading apparatus 110 shown in FIG.

原稿読取部111は、照明装置200(具体的には光源ユニット)、ミラーユニット111c、集光レンズ111d及び撮像素子(この例ではCCD)111eを備えている。   The document reading unit 111 includes an illumination device 200 (specifically, a light source unit), a mirror unit 111c, a condenser lens 111d, and an image sensor (CCD in this example) 111e.

原稿載置台111aは、主走査方向Xにおける両端部が原稿読取部111の枠体に載置されている。   The document placing table 111 a has both ends in the main scanning direction X placed on the frame of the document reading unit 111.

画像読取装置110は、原稿固定方式により原稿Gを固定して原稿画像を読み取る一方、原稿移動方式により原稿Gを移動させて原稿画像を読み取るように構成されている。   The image reading device 110 is configured to read a document image by fixing the document G by a document fixing method and to read a document image by moving the document G by a document moving method.

画像読取装置110では、原稿固定方式によって原稿Gの原稿画像を読み取る場合、原稿載置台111aに載置された原稿Gに原稿載置台111aを介して照明装置200からの光を照射しながら照明装置200を一定の速度で副走査方向Yの一方側に移動させて原稿Gの画像を走査する。また、ミラーユニット111cを照明装置200の移動速度の1/2の移動速度で同じく副走査方向Yの一方側に移動させる。このとき、照明装置200にて照明された原稿Gからの反射光(読取光)は、照明装置200に設けられた第1ミラー250で反射した後、ミラーユニット111cの第2ミラー111c1及び第3ミラー111c2によって光路変換され、集光レンズ111dを介して撮像素子111eに結像し、ここで原稿画像光が読み取られて電気的な画像データに変換される。   In the image reading device 110, when the original image of the original G is read by the original fixing method, the illumination device irradiates light from the illumination device 200 to the original G placed on the original placement table 111a via the original placement table 111a. The image of the original G is scanned by moving 200 to one side in the sub-scanning direction Y at a constant speed. Also, the mirror unit 111c is moved to one side in the sub-scanning direction Y at a movement speed that is ½ of the movement speed of the illumination device 200. At this time, the reflected light (reading light) from the original G illuminated by the illumination device 200 is reflected by the first mirror 250 provided in the illumination device 200, and then the second mirror 111c1 and the third mirror 111c1 of the mirror unit 111c. The optical path is changed by the mirror 111c2, and an image is formed on the image sensor 111e via the condenser lens 111d. The original image light is read and converted into electrical image data.

一方、原稿移動方式によって原稿Gの原稿画像を読み取る場合、照明装置200及びミラーユニット111cを原稿読取部材111bの読取位置Rに静止させたまま、自動原稿送り装置112によって原稿Gを原稿読取部材111b上に原稿Gが通過するように副走査方向Yの一方側に搬送する。また、原稿読取部材111b上を通過する原稿Gの一方の面に原稿読取部材111bを介して照明装置200からの光を照射する。このとき、原稿Gからの反射光(読取光)は、前述の原稿固定方式と同様に第1ミラー250で反射した後、第2ミラー111c1及び第3ミラー111c2によって光路変換され、集光レンズ111dを介して撮像素子111eに結像し、ここで原稿画像が読み取られて電気的な画像データに変換される。   On the other hand, when the original image of the original G is read by the original moving system, the original G is read by the automatic original feeder 112 while the illumination device 200 and the mirror unit 111c remain stationary at the reading position R of the original reading member 111b. The original G is conveyed to one side in the sub-scanning direction Y so that the original G passes therethrough. In addition, one surface of the document G passing over the document reading member 111b is irradiated with light from the illumination device 200 via the document reading member 111b. At this time, the reflected light (reading light) from the original G is reflected by the first mirror 250 in the same manner as in the original fixing method described above, and then the optical path is changed by the second mirror 111c1 and the third mirror 111c2, and the condensing lens 111d. Then, an image is formed on the image sensor 111e through which the original image is read and converted into electrical image data.

こうして、副走査方向Yに沿って往復移動する照明装置200は、副走査方向Yに沿って往復移動する移動機構(図示省略)によって副走査方向Yに往復移動する基台111f上に固定されている。   Thus, the illumination device 200 that reciprocates along the sub-scanning direction Y is fixed on the base 111f that reciprocates in the sub-scanning direction Y by a moving mechanism (not shown) that reciprocates along the sub-scanning direction Y. Yes.

なお、図2に示す導光部材230等については、後ほど詳しく説明する。   The light guide member 230 shown in FIG. 2 will be described in detail later.

[照明装置]
図3は、本実施の形態に係る照明装置200の概略構成を示す斜視図である。図4は、図3に示すA−A線に沿った照明装置200の概略断面図である。
[Lighting device]
FIG. 3 is a perspective view showing a schematic configuration of lighting apparatus 200 according to the present embodiment. FIG. 4 is a schematic cross-sectional view of the illumination device 200 along the line AA shown in FIG.

照明装置200は、発光素子210(図4参照)と、発光素子210を搭載する基板220(図3参照)と、発光素子210から出射される光を導光する導光部材230(図3及び図4参照)とを備えている。   The lighting device 200 includes a light emitting element 210 (see FIG. 4), a substrate 220 on which the light emitting element 210 is mounted (see FIG. 3), and a light guide member 230 that guides light emitted from the light emitting element 210 (see FIG. 3 and FIG. 3). 4).

本実施の形態に係る照明装置200は、導光部材230を1つ又は2つ以上のものとして構成することができる。また、導光部材230の片側の光入射面230a又は両側の光入射面230a,230aから光を入射することができる。   The lighting device 200 according to the present embodiment can be configured with one or more light guide members 230. Further, light can be incident from the light incident surface 230a on one side of the light guide member 230 or the light incident surfaces 230a and 230a on both sides.

ここでは、照明装置200は、一対の導光部材230,230を備え、一対の導光部材230,230の両側の光入射面(230a,230a),(230a,230a)(図4参照)からそれぞれ光を入射する態様を例にとって以下に説明する。   Here, the illuminating device 200 includes a pair of light guide members 230 and 230, from the light incident surfaces (230 a and 230 a) and (230 a and 230 a) (see FIG. 4) on both sides of the pair of light guide members 230 and 230. A description will be given below of an example in which light is incident.

照明装置200は、2つ(一対)の基板220,220と、4つ(二対)の発光素子(210,210),(210,210)とを備えている。   The lighting device 200 includes two (a pair of) substrates 220 and 220 and four (two pairs) of light emitting elements (210 and 210) and (210 and 210).

4つ(二対)の発光素子(210,210),(210,210)は、2つ(一対)の基板220,220のそれぞれに2つずつ(一対ずつ)搭載されている。   Four (two pairs) of light emitting elements (210, 210), (210, 210) are mounted on each of two (a pair of) substrates 220, 220 two (one pair).

照明装置200を固定する基台111f(図3及び図4参照)は、照明装置200の各構成部材を支持する。基台111fは、主走査方向Xに長尺な板状部材の所定箇所を打ち抜き加工や折り曲げ加工により加工して形成されたものである。基台111fに設けられた複数の孔は、照明装置200の各構成部材をネジ等の固定部材によって固定するために用いられる。また、基台111fの底部に対して折り曲げられて立設された部分は、照明装置200の各構成部材の位置決め部や固定部として利用される。   A base 111f (see FIGS. 3 and 4) for fixing the lighting device 200 supports each component of the lighting device 200. The base 111f is formed by punching or bending a predetermined portion of a plate-like member that is long in the main scanning direction X. The plurality of holes provided in the base 111f are used to fix each constituent member of the lighting device 200 with a fixing member such as a screw. Moreover, the part bent and standing with respect to the bottom part of the base 111f is utilized as a positioning part and fixing | fixed part of each structural member of the illuminating device 200. FIG.

発光素子(210,210),(210,210)は、導光部材230,230の両側の光入射面(230a,230a),(230a,230a)に向けて光を出射するものである。発光素子210としては、代表的には、発光ダイオード(LED)を例示できる。発光ダイオードは、装置の小型化や点光源としての特性を有しているため最も適している。   The light emitting elements (210, 210), (210, 210) emit light toward the light incident surfaces (230a, 230a), (230a, 230a) on both sides of the light guide members 230, 230. A typical example of the light emitting element 210 is a light emitting diode (LED). The light emitting diode is most suitable because it has the characteristics of downsizing the device and the point light source.

基板220,220の導光部材230,230側には、発光素子(210,210),(210,210)が導光部材230,230の光入射面(230a,230a),(230a,230a)に対向する位置に搭載されている。照明装置200は、さらに、導光部材230,230を取り付けるホルダー部材240(図3及び図4参照)(取付部材の一例)を備えている。基板220,220は、搭載している発光素子(210,210),(210,210)が導光部材230,230の光入射面(230a,230a),(230a,230a)に対向するようにホルダー部材240に設けられている。   On the light guide members 230 and 230 side of the substrates 220 and 220, the light emitting elements (210 and 210) and (210 and 210) are light incident surfaces (230a and 230a) and (230a and 230a) of the light guide members 230 and 230, respectively. It is mounted at a position opposite to. The illumination device 200 further includes a holder member 240 (see FIGS. 3 and 4) (an example of an attachment member) to which the light guide members 230 and 230 are attached. The substrates 220 and 220 have the light emitting elements (210, 210) and (210, 210) mounted thereon facing the light incident surfaces (230a, 230a) and (230a, 230a) of the light guide members 230, 230. The holder member 240 is provided.

導光部材230,230における光入射面(230a,230a),(230a,230a)は、発光素子(210,210),(210,210)から出射される光を入射する。導光部材230,230は、光入射面(230a,230a),(230a,230a)から入射した光を出射する光出射面230b,230b(図3及び図4参照)を有している。   The light incident surfaces (230a, 230a) and (230a, 230a) of the light guide members 230 and 230 receive light emitted from the light emitting elements (210, 210) and (210, 210). The light guide members 230 and 230 have light emitting surfaces 230b and 230b (see FIGS. 3 and 4) that emit light incident from the light incident surfaces (230a and 230a) and (230a and 230a).

詳しくは、導光部材230,230は、透光性を有する部材で形成されており、主走査方向Xに延びている。導光部材230,230は、長手方向(主走査方向X)における端面(この例では両端面)が光入射面(230a,230a),(230a,230a)とされ、原稿載置台111aに載置される原稿G側の面(原稿Gと対向する面)が光出射面230b,230bとされている。導光部材230,230は、光入射面(230a,230a),(230a,230a)及び光出射面230b,230b以外の面が光反射面230c,230c(図4参照)とされている。   Specifically, the light guide members 230 and 230 are formed of a translucent member and extend in the main scanning direction X. The light guide members 230 and 230 have end faces in the longitudinal direction (main scanning direction X) (both end faces in this example) as light incident surfaces (230a, 230a) and (230a, 230a), and are placed on the document placement table 111a. The surface on the side of the original G (surface facing the original G) is set as the light emitting surfaces 230b and 230b. The light guide members 230 and 230 have surfaces other than the light incident surfaces (230a and 230a) and (230a and 230a) and the light emitting surfaces 230b and 230b as light reflecting surfaces 230c and 230c (see FIG. 4).

ホルダー部材240は、導光部材230,230を載置する部材である。ホルダー部材240は、主走査方向Xに長尺な枠形状の壁部241(図4参照)と、壁部241と連接されて導光部材230,230の周方向の一部を支持する支持部242,242(図4参照)とを有している。壁部241は、ホルダー部材本体240f(図4参照)の副走査方向Yにおける両端部において鉛直又は略鉛直方向に立設されている。支持部242,242は、導光部材230,230の光出射面230b,230bが原稿載置台111aに載置される原稿Gに対向するように導光部材230,230を載置する凹部242a,242a(図4参照)を有している。支持部242,242における凹部242a,242aは、導光部材230,230に対応した形状、具体的には、主走査方向Xに沿って延びた断面視半円状又は略半円状の凹条部とされている。支持部242,242と壁部241とは、一体形成されている。導光部材230,230は、主走査方向Xに移動可能に(温度や湿度等の外的要因による導光部材230,230の伸縮を許容するように)支持部242,242における凹部242a,242aに載置されている。また、ホルダー部材240には、原稿Gから反射してきた読取光が通過するスリットSL(図3及び図4参照)が設けられている。   The holder member 240 is a member on which the light guide members 230 and 230 are placed. The holder member 240 has a frame-shaped wall portion 241 (see FIG. 4) that is long in the main scanning direction X, and a support portion that is connected to the wall portion 241 and supports a part of the light guide members 230 and 230 in the circumferential direction. 242, 242 (see FIG. 4). The wall portion 241 is erected in the vertical or substantially vertical direction at both ends in the sub-scanning direction Y of the holder member main body 240f (see FIG. 4). The support portions 242 and 242 are concave portions 242a for placing the light guide members 230 and 230 so that the light emitting surfaces 230b and 230b of the light guide members 230 and 230 face the document G placed on the document placement table 111a. 242a (see FIG. 4). The concave portions 242a and 242a in the support portions 242 and 242 have a shape corresponding to the light guide members 230 and 230, specifically, a semicircular shape or a substantially semicircular shape in sectional view extending along the main scanning direction X. It is considered to be a part. The support parts 242 and 242 and the wall part 241 are integrally formed. The light guide members 230 and 230 are movable in the main scanning direction X (to allow expansion and contraction of the light guide members 230 and 230 due to external factors such as temperature and humidity), and the concave portions 242a and 242a in the support portions 242 and 242. It is mounted on. Further, the holder member 240 is provided with a slit SL (see FIGS. 3 and 4) through which the reading light reflected from the original G passes.

なお、導光部材230,230と発光素子(210,210),(210,210)を搭載した基板220,220との配置構成については後ほど詳しく説明する。   The arrangement configuration of the light guide members 230 and 230 and the substrates 220 and 220 on which the light emitting elements (210 and 210) and (210 and 210) are mounted will be described in detail later.

照明装置200は、第1ミラー250(図3及び図4参照)と、光源駆動回路基板260(図3及び図4参照)とをさらに備えている。   The illumination device 200 further includes a first mirror 250 (see FIGS. 3 and 4) and a light source drive circuit board 260 (see FIGS. 3 and 4).

第1ミラー250及び光源駆動回路基板260は、ホルダー部材240に設けられている。   The first mirror 250 and the light source drive circuit board 260 are provided on the holder member 240.

第1ミラー250は、ミラーホルダ250a(図4参照)によってホルダー部材240に固定されており、原稿Gから反射した読取光の光路上に所定位置及び所定角度で配設されている。第1ミラー250は、ホルダー部材240のスリットSLを通過してきた読取光が最初に入射するミラーであり、スリットSLの直下に位置している。   The first mirror 250 is fixed to the holder member 240 by a mirror holder 250a (see FIG. 4), and is disposed on the optical path of the reading light reflected from the original G at a predetermined position and a predetermined angle. The first mirror 250 is a mirror on which the reading light that has passed through the slit SL of the holder member 240 first enters, and is located immediately below the slit SL.

光源駆動回路基板260は、基板220,220に搭載された発光素子(210,210),(210,210)を駆動制御する駆動回路を搭載した基板であり、基台111f上に設けられてホルダー部材240の副走査方向Yにおける一方側の外側面に隣接されている。光源駆動回路基板260と発光素子(210,210),(210,210)との間には、図示を省略したハーネスが電気的に接続されている。   The light source driving circuit board 260 is a board on which a driving circuit for driving and controlling the light emitting elements (210, 210), (210, 210) mounted on the boards 220, 220 is mounted. The light source driving circuit board 260 is provided on the base 111f and is a holder. The member 240 is adjacent to the outer surface on one side in the sub-scanning direction Y. A harness (not shown) is electrically connected between the light source drive circuit board 260 and the light emitting elements (210, 210), (210, 210).

照明装置200は、放熱部材270(図3参照)をさらに備えている。放熱部材270は、基板220,220、ひいては基板220,220に搭載された発光素子(210,210),(210,210)を放熱する。放熱部材270は、この例では、一対の放熱板とされている。放熱部材270,270は、熱伝導率の高い金属などにより形成された板状部材であり、この例では板金とされている。放熱部材270,270は、基板220,220の裏面に放熱シートST,ST(図3参照)を介して設けられている。放熱シートST,STは、基板220,220と放熱部材270,270との間に挟み込んで放熱効果を高める役割を有している。これにより、発光素子(210,210),(210,210)が発光することで生じる熱を基板220,220の裏面を経由して放熱部材270,270に伝達させ、外部に放散させることができる。この例では、放熱シートST,STは、熱伝導両面接着シートとされており、放熱部材270,270及び基板220,220を互いに接着している。   The lighting device 200 further includes a heat dissipation member 270 (see FIG. 3). The heat dissipating member 270 dissipates heat from the substrates 220 and 220 and thus the light emitting elements (210 and 210) and (210 and 210) mounted on the substrates 220 and 220. In this example, the heat radiating member 270 is a pair of heat radiating plates. The heat dissipating members 270 and 270 are plate-like members formed of a metal having a high thermal conductivity or the like, and in this example, is a sheet metal. The heat radiation members 270 and 270 are provided on the back surfaces of the substrates 220 and 220 via heat radiation sheets ST and ST (see FIG. 3). The heat radiation sheets ST and ST have a role of enhancing the heat radiation effect by being sandwiched between the substrates 220 and 220 and the heat radiation members 270 and 270. Thereby, the heat generated by the light emitting elements (210, 210), (210, 210) emitting light can be transmitted to the heat radiating members 270, 270 via the back surfaces of the substrates 220, 220 and dissipated to the outside. . In this example, the heat radiating sheets ST and ST are heat conductive double-sided adhesive sheets, and the heat radiating members 270 and 270 and the substrates 220 and 220 are bonded to each other.

以上説明した照明装置200では、発光素子(210,210),(210,210)から出射された光は、導光部材230,230の光入射面(230a,230a),(230a,230a)に入射して導光部材230,230内に導光され、光出射面230b,230bから直接出射されるか、光反射面230c,230cで反射されて光出射面230b,230bから出射される。導光部材230,230の光出射面230b,230bから出射されて原稿Gで反射された反射光は、読取光として第1ミラー250によりミラーユニット111cに向けて反射される。   In the illumination device 200 described above, the light emitted from the light emitting elements (210, 210), (210, 210) is incident on the light incident surfaces (230a, 230a), (230a, 230a) of the light guide members 230, 230. The light is incident and guided into the light guide members 230 and 230 and directly emitted from the light emitting surfaces 230b and 230b, or reflected by the light reflecting surfaces 230c and 230c and emitted from the light emitting surfaces 230b and 230b. The reflected light emitted from the light emitting surfaces 230b and 230b of the light guide members 230 and 230 and reflected by the original G is reflected by the first mirror 250 toward the mirror unit 111c as reading light.

なお、導光部材230を1つ又は3つ以上のものとして構成し、導光部材230の長手方向における片側の光入射面230aから光を入射するようにしてもよい。   The light guide member 230 may be configured as one or three or more members, and light may be incident from one side of the light incident surface 230a in the longitudinal direction of the light guide member 230.

[導光部材と発光素子を搭載した基板との配置構成]
図5は、本実施の形態に係る照明装置200の長手方向における一端部を示す概略平面図である。図6は、図5に示すB−B線に沿った照明装置200の長手方向における一端部を示す概略断面図である。図7は、図6に示す導光部材230と発光素子210を搭載した基板220との間の部分を拡大して示す概略断面図である。図8は、図3に示すC−C線に沿った照明装置200の長手方向における一端部を示す概略断面図である。
[Arrangement configuration of light guide member and substrate mounted with light emitting element]
FIG. 5 is a schematic plan view showing one end portion in the longitudinal direction of lighting apparatus 200 according to the present embodiment. FIG. 6 is a schematic cross-sectional view showing one end portion in the longitudinal direction of lighting device 200 along the line BB shown in FIG. FIG. 7 is an enlarged schematic cross-sectional view showing a portion between the light guide member 230 shown in FIG. 6 and the substrate 220 on which the light emitting element 210 is mounted. FIG. 8 is a schematic cross-sectional view showing one end of the lighting device 200 in the longitudinal direction along the line CC shown in FIG.

また、図9は、導光部材230,230と介在部材SP,SPと発光素子210,210を搭載した基板220との配置関係を示す分解斜視図であり、図10は、図5から図9に示す発光素子210を介在部材SP及び導光部材230から離間させた状態を示す斜視図である。   FIG. 9 is an exploded perspective view showing a positional relationship between the light guide members 230 and 230, the interposition members SP and SP, and the substrate 220 on which the light emitting elements 210 and 210 are mounted. FIG. It is a perspective view which shows the state which spaced apart the light emitting element 210 shown in 2 from the interposed member SP and the light guide member 230. FIG.

なお、照明装置200の長手方向における一端部(正面側の端部)の構成は、他端部(背面側の端部)の構成と実質的に同様の構成をしている。従って、図5から図10並びに後述する図11から図13において、照明装置200の長手方向における他端部(背面側の端部)の構成については、一端部(正面側の端部)の構成に代表させて示している。また、図8において、ホルダー部材240等は図示を省略している。   In addition, the structure of the one end part (front side edge part) in the longitudinal direction of the illuminating device 200 has substantially the same structure as the structure of the other end part (back side edge part). Therefore, in FIGS. 5 to 10 and FIGS. 11 to 13 to be described later, the configuration of the other end portion (end portion on the back side) in the longitudinal direction of the lighting device 200 is the configuration of one end portion (end portion on the front side). This is shown as a representative. In FIG. 8, the holder member 240 and the like are not shown.

導光部材230,230は、光入射面(230a,230a),(230a,230a)(図6から図10参照)が光出射面230b,230b(図5から図9参照)に対して交差(具体的には直交又は略直交)するものとされている。この例では、導光部材230,230は、長手方向に沿って延びた円柱状又は略円柱状の導光体とされている。導光部材230,230は、光入射面(230a,230a),(230a,230a)のサイズが発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)(図6から図10参照)のサイズよりも所定量だけ大きくなっており、長手方向のサイズが最大サイズの原稿Gの主走査方向Xにおけるサイズよりも所定量だけ大きくなっている。導光部材230,230は、例えば、アクリル樹脂を金型で成形することにより形成することができる。なお、導光部材230,230は、円柱状又は略円柱状のものに限定されるものではなく、例えば、角柱状(具体的には立方体状又は略立方体状)のものであってもよい。   In the light guide members 230 and 230, the light incident surfaces (230a and 230a) and (230a and 230a) (see FIGS. 6 to 10) intersect the light emitting surfaces 230b and 230b (see FIGS. 5 to 9). Specifically, it is assumed to be orthogonal or substantially orthogonal). In this example, the light guide members 230 and 230 are columnar or substantially columnar light guides extending in the longitudinal direction. The light guide members 230 and 230 have light incident surfaces (230a and 230a) and (230a and 230a) having light emitting elements (210 and 210a) and light emitting surfaces (210a and 210a) and (210a, 210a) (see FIGS. 6 to 10) is larger by a predetermined amount, and the size in the longitudinal direction is larger than the size in the main scanning direction X of the original G having the maximum size. The light guide members 230 and 230 can be formed, for example, by molding an acrylic resin with a mold. In addition, the light guide members 230 and 230 are not limited to a columnar shape or a substantially cylindrical shape, and may be, for example, a prismatic shape (specifically, a cubic shape or a substantially cubic shape).

発光素子(210,210),(210,210)は、基板220,220側とは反対側の発光面(210a,210a),(210a,210a)が全体に発光するチップ状のものとされている。この例では、発光素子(210,210),(210,210)は、厚み方向が縦横のサイズよりも小さい立方体形状のものであり、縦横のサイズが3mm×3mm、厚みが1mm程度のものとされている。なお、発光素子は、立方体形状のものに限定されるものではなく、例えば、円柱状又は略円柱状のものであってもよい。   The light emitting elements (210, 210), (210, 210) are formed in a chip shape in which the light emitting surfaces (210a, 210a), (210a, 210a) opposite to the substrate 220, 220 side emit light entirely. Yes. In this example, the light emitting elements (210, 210), (210, 210) have a cubic shape whose thickness direction is smaller than the vertical and horizontal sizes, the vertical and horizontal sizes are about 3 mm × 3 mm, and the thickness is about 1 mm. Has been. Note that the light emitting element is not limited to a cubic shape, and may be, for example, a cylindrical shape or a substantially cylindrical shape.

そして、導光部材230,230は、発光素子(210,210),(210,210)からの光を光入射面(230a,230a),(230a,230a)で入射し、入射した光を光出射面230b,230bから出射するようになっている。また、発光素子(210,210),(210,210)は、導光部材230,230の両端面である光入射面(230a,230a),(230a,230a)に近接して設けられている。   The light guide members 230 and 230 receive light from the light emitting elements (210 and 210) and (210 and 210) at the light incident surfaces (230a and 230a) and (230a and 230a), and the incident light is light. The light exits from the exit surfaces 230b and 230b. Further, the light emitting elements (210, 210), (210, 210) are provided close to the light incident surfaces (230a, 230a), (230a, 230a) which are both end faces of the light guide members 230, 230. .

ところで、照明装置200においては、発光素子210の発光面210aと導光部材230の光入射面230aとの間の距離を一定に保つ必要がある。例えば、発光素子210の発光面210aと導光部材230の光入射面230aとの間の距離が近すぎると、発光素子210からの光が導光部材230の光入射面230aで正反射する光が多くなる一方、該距離が遠すぎると、それだけ発光素子210からの光のロス(損失)が発生し、何れにしても発光素子210から導光部材230の光入射面230aに入射される光の光量の低下、ひいては、導光部材230の光出射面230bから出射される光の光量の低下を招く。   By the way, in the illuminating device 200, it is necessary to keep the distance between the light emission surface 210a of the light emitting element 210, and the light-incidence surface 230a of the light guide member 230 constant. For example, when the distance between the light emitting surface 210a of the light emitting element 210 and the light incident surface 230a of the light guide member 230 is too close, the light from the light emitting element 210 is regularly reflected by the light incident surface 230a of the light guide member 230. On the other hand, if the distance is too far, a loss of light from the light emitting element 210 is generated, and in any case, the light incident on the light incident surface 230a of the light guide member 230 from the light emitting element 210. Of the light emitted from the light exit surface 230b of the light guide member 230 is reduced.

一方、導光部材230は、温度や湿度等の外的要因により伸縮することがある。そうすると、発光素子210の発光面210aと導光部材230の光入射面230aとの間の距離が変化し、これにより、発光素子210から導光部材230の光入射面230aに入射される光の光量が低下し、ひいては、導光部材230の光出射面230bから出射される光の光量が低下する。さらに、導光部材230が膨張する場合には、導光部材230の光入射面230aが発光素子210の発光面210aに接触して導光部材230が発光素子210を圧迫することにより発光素子210を破損することがある。このことは、導光部材230のサイズ(特に長手方向のサイズ)が大きくなる程、単位距離当たりの伸縮量が大きくなり、特に顕著になる。   On the other hand, the light guide member 230 may expand and contract due to external factors such as temperature and humidity. As a result, the distance between the light emitting surface 210a of the light emitting element 210 and the light incident surface 230a of the light guide member 230 changes, and thereby the light incident on the light incident surface 230a of the light guide member 230 from the light emitting element 210 is changed. The amount of light decreases, and as a result, the amount of light emitted from the light exit surface 230b of the light guide member 230 decreases. Further, when the light guide member 230 expands, the light incident surface 230a of the light guide member 230 contacts the light emitting surface 210a of the light emitting element 210 and the light guide member 230 presses the light emitting element 210, thereby causing the light emitting element 210. May be damaged. This becomes particularly significant as the size of the light guide member 230 (particularly the size in the longitudinal direction) increases, and the amount of expansion / contraction per unit distance increases.

この点、本実施の形態に係る照明装置200では、図5から図10に示すように、発光素子210と導光部材230との間に発光素子210と導光部材230とを予め定めた所定の距離d〜d(図7参照)に維持する介在部材SP(具体的にはスペーサ)が設けられている。この例では、介在部材SPは、発光素子210と導光部材230との間の空間を確保するためのものとされている。照明装置200では、介在部材SPにより発光素子210からの光を導光部材230の光出射面230bから効率的に出射できるように発光素子210と導光部材230との適切な位置関係が維持されるようになっている。   In this regard, in lighting device 200 according to the present embodiment, as shown in FIGS. 5 to 10, light emitting element 210 and light guide member 230 are set in advance between light emitting element 210 and light guide member 230. Intervening members SP (specifically, spacers) that maintain the distances d to d (see FIG. 7) are provided. In this example, the interposition member SP is for securing a space between the light emitting element 210 and the light guide member 230. In the lighting device 200, the appropriate positional relationship between the light emitting element 210 and the light guide member 230 is maintained so that the light from the light emitting element 210 can be efficiently emitted from the light emitting surface 230b of the light guide member 230 by the interposition member SP. It has become so.

詳しくは、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)と導光部材230,230の光入射面(230a,230a),(230a,230a)との間には介在部材(SP,SP),(SP,SP)が設けられている。発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)と導光部材230,230の光入射面(230a,230a),(230a,230a)との間の所定の距離d〜dは、この例では、0.2mm〜0.5mm程度とされている。所定の距離d〜dは、発光素子210と導光部材230との適切な位置関係を考慮した適正な距離に適宜設定することができる。また、発光素子(210,210),(210,210)の光軸と導光部材230,230の光入射面(230a,230a),(230a,230a)における最も導光効率がよい部分(この例では中心)とが一致又は略一致している。   Specifically, the light emitting surfaces (210a, 210a), (210a, 210a) of the light emitting elements (210, 210), (210, 210) and the light incident surfaces (230a, 230a), (230a, 230a) are provided with interposition members (SP, SP), (SP, SP). The light emitting surfaces (210a, 210a), (210a, 210a) of the light emitting elements (210, 210), (210, 210) and the light incident surfaces (230a, 230a), (230a, 230a) of the light guide members 230, 230, The predetermined distances d to d are set to about 0.2 mm to 0.5 mm in this example. The predetermined distances d to d can be appropriately set to an appropriate distance in consideration of an appropriate positional relationship between the light emitting element 210 and the light guide member 230. In addition, the optical axis of the light emitting elements (210, 210), (210, 210) and the light incident surfaces (230a, 230a), (230a, 230a) of the light guide members 230, 230 have the best light guide efficiency (this In the example, the center) matches or substantially matches.

ここで、介在部材SPに用いることができる部材としては、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)と導光部材230,230の光入射面(230a,230a),(230a,230a)との間の所定の距離d〜dを一定に保つことができるものであれば、何れのものを用いてもよく、例えば、剛性を有する樹脂材料、ガラス材料、金属材料、炭素材料、セラミック材料等の剛性材料からなる部材を例示できる。このうち、樹脂材料としては、発光素子(210,210),(210,210)の発熱に対する耐熱性を考慮すると、例えば、ポリイミド樹脂等の耐熱性を有する材料を挙げることができる。また、金属材料としては、発光素子(210,210),(210,210)の発熱に対する放熱性を考慮すると、例えば、アルミニウム等の放熱性を有する材料を挙げることができる。   Here, as members that can be used for the interposition member SP, the light emitting surfaces (210a, 210a), (210a, 210a) of the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 are used. Any one can be used as long as the predetermined distances d to d between the light incident surfaces (230a, 230a) and (230a, 230a) can be kept constant. Examples include members made of rigid materials such as resin materials, glass materials, metal materials, carbon materials, and ceramic materials. Among these, considering the heat resistance against heat generation of the light emitting elements (210, 210), (210, 210), examples of the resin material include heat-resistant materials such as polyimide resins. In addition, examples of the metal material include a heat radiating material such as aluminum in consideration of the heat radiating property with respect to the heat generation of the light emitting elements (210, 210) and (210, 210).

本実施の形態によれば、発光素子(210,210),(210,210)と導光部材230,230との間に発光素子(210,210),(210,210)と導光部材230,230とを所定の距離d〜dに維持する介在部材(SP,SP),(SP,SP)が設けられているので、たとえ導光部材230,230が伸縮したとしても、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを一定に保つことができる。詳しくは、導光部材230,230が膨張するときには、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230との間の所定の距離d〜dを維持した状態で、導光部材230,230の膨張に追従して介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び基板220,220の導光部材230,230側とは反対側への移動を許容する。これにより、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを一定に保つことができる。また、導光部材230,230が収縮するときには、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で、導光部材230,230の収縮に追従して介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び基板220,220の導光部材230,230側への移動を許容する。これにより、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを一定に保つことができる。しかも、たとえ発光素子(210,210),(210,210)の基板220,220からの浮き(例えば半田浮き)があったとしても、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)と導光部材230,230の光入射面(230a,230a),(230a,230a)との間の所定の距離d〜dを一定に保つことができる。詳しくは、発光素子(210,210),(210,210)の基板220,220からの浮きがある場合、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で、発光素子(210,210),(210,210)の基板220,220からの浮きに追従して介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び基板220,220の導光部材230,230側とは反対側への移動を許容する。これにより、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを一定に保つことができる。   According to the present embodiment, the light emitting elements (210, 210), (210, 210) and the light guide member 230 are disposed between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230. , 230 are maintained at predetermined distances d to d, and the interposition members (SP, SP), (SP, SP) are provided even if the light guide members 230, 230 expand and contract. , SP), (SP, SP), the predetermined distances d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 can be kept constant. Specifically, when the light guide members 230 and 230 expand, the interposition members (SP, SP) and (SP, SP) cause the light emitting elements (210, 210), (210, 210) and the light guide member 230 to be interposed. The light emitting elements (210, 210), (210) via the interposition members (SP, SP), (SP, SP) following the expansion of the light guide members 230, 230 while maintaining the predetermined distances d to d. 210) and the substrates 220, 220 are allowed to move to the side opposite to the light guide member 230, 230 side. Accordingly, the predetermined distances d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 are made constant by the interposed members (SP, SP), (SP, SP). Can keep. Further, when the light guide members 230 and 230 contract, the interposed members (SP, SP) and (SP, SP) cause the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 to be connected. In the state where the predetermined distances d to d are maintained, the light emitting elements (210, 210), () via the interposition members (SP, SP), (SP, SP) following the contraction of the light guide members 230, 230, 210, 210) and the substrates 220, 220 are allowed to move to the light guide members 230, 230 side. Accordingly, the predetermined distances d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 are made constant by the interposed members (SP, SP), (SP, SP). Can keep. Moreover, even if the light emitting elements (210, 210), (210, 210) are lifted from the substrates 220, 220 (for example, solder floating), light is emitted by the interposition members (SP, SP), (SP, SP). The light emitting surfaces (210a, 210a), (210a, 210a) of the elements (210, 210), (210, 210) and the light incident surfaces (230a, 230a), (230a, 230a) of the light guide members 230, 230 The predetermined distances d to d can be kept constant. Specifically, when the light emitting elements (210, 210), (210, 210) are lifted from the substrates 220, 220, the light emitting elements (210, 210), (SP, SP) are interposed by the interposed members (SP, SP), (SP, SP). The light-emitting elements (210, 210), (210, 210) float from the substrates 220, 220 while maintaining a predetermined distance d to d between (210, 210) and the light guide members 230, 230. Following the light-emitting elements (210, 210), (210, 210) and the substrates 220, 220 via the intervening members (SP, SP), (SP, SP) and to the side opposite to the light guide members 230, 230 side. Is allowed to move. Accordingly, the predetermined distances d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 are made constant by the interposed members (SP, SP), (SP, SP). Can keep.

従って、発光素子(210,210),(210,210)の基板220,220からの浮きを考慮した上で導光部材230,230の伸縮に伴う導光部材230,230の光入射面(230a,230a),(230a,230a)に入射される光の光量の低下、ひいては、導光部材230,230の光出射面230b,230bから出射される光の光量の低下、さらには発光素子(210,210),(210,210)の破損を効果的に防止することが可能となる。このことは、導光部材230,230のサイズ(特に長手方向のサイズ)が大きくなる程、単位距離当たりの伸縮量が大きくなり、特に有効になる。   Accordingly, the light incident surfaces (230a) of the light guide members 230 and 230 accompanying the expansion and contraction of the light guide members 230 and 230 in consideration of the floating of the light emitting elements (210 and 210) and (210 and 210) from the substrates 220 and 220. , 230a), (230a, 230a), the amount of light incident on the light guide members 230, 230b is decreased, the amount of light emitted from the light exit surfaces 230b, 230b is decreased, and the light emitting element (210 , 210), (210, 210) can be effectively prevented from being damaged. This is particularly effective as the size of the light guide members 230 and 230 (particularly the size in the longitudinal direction) increases, and the amount of expansion / contraction per unit distance increases.

(第1実施形態)
ところで、介在部材(SP,SP),(SP,SP)が発光素子(210,210),(210,210)に対して発光素子(210,210),(210,210)から出射される光の光軸方向に直交する方向(具体的には副走査方向Y及び上下方向Z)にずれると、発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを確実に維持することが困難になる。従って、所定の距離d〜dを確実に維持するという観点から、介在部材(SP,SP),(SP,SP)の発光素子(210,210),(210,210)に対する光軸方向に直交する方向へのずれを効果的に防止して、所定の距離d〜dを確実に維持することが望まれる。
(First embodiment)
By the way, the light emitted from the light emitting elements (210, 210), (210, 210) by the interposition members (SP, SP), (SP, SP) with respect to the light emitting elements (210, 210), (210, 210). Of the light-emitting elements (210, 210), (210, 210) and the light guide members 230, 230 when they are shifted in the direction perpendicular to the optical axis direction (specifically, the sub-scanning direction Y and the vertical direction Z). It becomes difficult to reliably maintain the predetermined distances d to d. Therefore, from the viewpoint of reliably maintaining the predetermined distances d to d, the interposed members (SP, SP), (SP, SP) are orthogonal to the light axis direction with respect to the light emitting elements (210, 210), (210, 210). It is desired that the predetermined distances d to d are reliably maintained by effectively preventing the deviation in the direction of the movement.

この点、第1実施形態に係る照明装置200において、介在部材(SP,SP),(SP,SP)は、発光素子(210,210),(210,210)に対する光軸方向に直交する方向への移動を規制する構成とされている。   In this regard, in the lighting device 200 according to the first embodiment, the interposition members (SP, SP), (SP, SP) are orthogonal to the optical axis direction with respect to the light emitting elements (210, 210), (210, 210). It is set as the structure which regulates the movement to.

詳しくは、介在部材(SP,SP),(SP,SP)には、発光素子(210,210),(210,210)に対する光軸方向に直交する方向への移動を規制する規制部SP1〜SP1(図7から図10参照)が設けられている。なお、介在部材(SP,SP),(SP,SP)(この例では、規制部SP1〜SP1)は、基板220,220には接触していない。   Specifically, the interposition members (SP, SP), (SP, SP) have restricting portions SP1 to SP1 that restrict the movement of the light emitting elements (210, 210), (210, 210) in the direction perpendicular to the optical axis direction. SP1 (see FIGS. 7 to 10) is provided. The interposition members (SP, SP), (SP, SP) (in this example, the regulation portions SP1 to SP1) are not in contact with the substrates 220 and 220.

規制部SP1は、第1接触部SPa(図10参照)を有している。第1接触部SPaは、発光素子(210,210),(210,210)の外周側面(210b,210b),(210b,210b)(図10参照)の少なくとも発光面(210a,210a),(210a,210a)に連接した周縁部210b1(図10参照)(この例では周縁部210b1)に接触する。第1接触部SPaは、外周側面210bに沿った接触面とされている。   The regulation part SP1 has a first contact part SPa (see FIG. 10). The first contact portion SPa includes at least light emitting surfaces (210a, 210a), (210), (210b, 210b), (210b, 210b) (see FIG. 10) of the light emitting elements (210, 210), (210, 210). 210a, 210a) is in contact with a peripheral portion 210b1 (see FIG. 10) (in this example, the peripheral portion 210b1). The first contact portion SPa is a contact surface along the outer peripheral side surface 210b.

また、規制部SP1は、第2接触部SPb(図10参照)を有している。第2接触部SPbは、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)の少なくとも外周縁部210a1(図10参照)(この例では外周縁部210a1)に接触する。第2接触部SPbは、発光面210aに沿った接触面とされている。   Further, the restricting portion SP1 has a second contact portion SPb (see FIG. 10). The second contact part SPb is at least the outer peripheral edge part 210a1 (see FIG. 10) of the light emitting surfaces (210a, 210a), (210a, 210a) of the light emitting elements (210, 210), (210, 210) (in this example, the outer contact part SPb). The peripheral edge 210a1) is contacted. The second contact portion SPb is a contact surface along the light emitting surface 210a.

具体的には、規制部SP1は、第1接触部SPaと第2接触部SPbとで発光素子210の外周縁部210a1及び周縁部210b1を嵌入する嵌入凹部を構成している。嵌入凹部は、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)と外周側面(210b,210b),(210b,210b)との角部を含む外周の周縁部(外周縁部210a1及び周縁部210b1)を覆うように設けられている。   Specifically, the restricting portion SP1 constitutes an insertion recess in which the outer peripheral edge portion 210a1 and the peripheral edge portion 210b1 of the light emitting element 210 are inserted by the first contact portion SPa and the second contact portion SPb. The insertion recesses are formed at the corners of the light emitting surfaces (210a, 210a), (210a, 210a) and the outer peripheral side surfaces (210b, 210b), (210b, 210b) of the light emitting elements (210, 210), (210, 210). It is provided so as to cover the peripheral edge portions including the outer peripheral edge portion 210a1 and the peripheral edge portion 210b1.

第1実施形態によると、介在部材(SP,SP),(SP,SP)は、発光素子(210,210),(210,210)に対する光軸方向に直交する方向への移動を規制する構成とされていることで、介在部材(SP,SP),(SP,SP)の発光素子(210,210),(210,210)に対する光軸方向に直交する方向へのずれを効果的に防止することができ、これにより、発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを確実に維持することができる。   According to the first embodiment, the interposition members (SP, SP), (SP, SP) are configured to restrict the movement of the light emitting elements (210, 210), (210, 210) in a direction perpendicular to the optical axis direction. Therefore, the displacement of the interposition members (SP, SP), (SP, SP) in the direction perpendicular to the optical axis direction with respect to the light emitting elements (210, 210), (210, 210) is effectively prevented. Accordingly, the predetermined distances d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 can be reliably maintained.

また、介在部材(SP,SP),(SP,SP)は、発光素子(210,210),(210,210)の外周側面(210b,210b),(210b,210b)の少なくとも発光面(210a,210a),(210a,210a)に連接した周縁部210b1に接触する構成とされていることで、介在部材SPに対する発光素子(210,210),(210,210)の光軸方向に直交する方向への移動を規制する構成を容易に実現させることができる。   Further, the interposition members (SP, SP), (SP, SP) are at least light emitting surfaces (210a) of the outer peripheral side surfaces (210b, 210b), (210b, 210b) of the light emitting elements (210, 210), (210, 210). , 210a) and (210a, 210a) are in contact with the peripheral edge 210b1, and are orthogonal to the optical axis direction of the light emitting elements (210, 210), (210, 210) with respect to the interposed member SP. The structure which controls the movement to a direction can be implement | achieved easily.

また、介在部材(SP,SP),(SP,SP)は、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)の少なくとも外周縁部210a1に接触する構成とされていることで、介在部材(SP,SP),(SP,SP)により発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを安定的に維持することができる。   The interposition members (SP, SP), (SP, SP) are at least the outer peripheral edge portions 210a1 of the light emitting surfaces (210a, 210a), (210a, 210a) of the light emitting elements (210, 210), (210, 210). By being configured to be in contact with each other, a predetermined distance between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 by the interposed members (SP, SP), (SP, SP). The distances d to d can be stably maintained.

(第2実施形態)
ところで、介在部材(SP,SP),(SP,SP)は、透明部材で構成されていてよいし、不透明部材又は半透明部材で構成されていてもよい。介在部材(SP,SP),(SP,SP)が透明部材で構成されている場合、介在部材(SP,SP),(SP,SP)は、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)の全体を覆うことができ、例えば発光面(210a,210a),(210a,210a)の全体に接触することができる。介在部材(SP,SP),(SP,SP)が不透明部材又は半透明部材で構成されている場合、介在部材(SP,SP),(SP,SP)は、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)の全体を覆うと、導光部材230,230の光入射面(230a,230a),(230a,230a)に入射させることができない又は効率的に入射させることができない。従って、介在部材(SP,SP),(SP,SP)が不透明部材又は半透明部材で構成されている場合、発光素子(210,210),(210,210)からの光を導光部材230,230の光入射面(230a,230a),(230a,230a)に効率的に入射させることが望まれる。
(Second Embodiment)
By the way, the interposition members (SP, SP), (SP, SP) may be made of a transparent member, or may be made of an opaque member or a translucent member. When the interposed members (SP, SP), (SP, SP) are made of transparent members, the interposed members (SP, SP), (SP, SP) are light emitting elements (210, 210), (210, 210). ) Can cover the entire light emitting surfaces (210a, 210a), (210a, 210a), for example, can contact the entire light emitting surfaces (210a, 210a), (210a, 210a). When the interposed members (SP, SP), (SP, SP) are made of an opaque member or a translucent member, the interposed members (SP, SP), (SP, SP) are light emitting elements (210, 210), When the entire light emitting surfaces (210a, 210a) and (210a, 210a) of (210, 210) are covered, they are made incident on the light incident surfaces (230a, 230a), (230a, 230a) of the light guide members 230, 230. Cannot enter or cannot enter efficiently. Therefore, when the interposed members (SP, SP), (SP, SP) are made of an opaque member or a semi-transparent member, light from the light emitting elements (210, 210), (210, 210) is guided to the light guide member 230. , 230 is desired to be efficiently incident on the light incident surfaces (230a, 230a), (230a, 230a).

この点、第2実施形態に係る照明装置200において、介在部材(SP,SP),(SP,SP)には、発光素子(210,210),(210,210)からの光を導光部材230,230に向けて通過させる開口SP2〜SP2(図7から10参照)が設けられている。開口SP2〜SP2は、発光素子(210,210),(210,210)の光軸方向(導光部材230,230の長手方向)に貫通する貫通孔とされている。   In this regard, in the lighting device 200 according to the second embodiment, the light from the light emitting elements (210, 210), (210, 210) is guided to the interposed members (SP, SP), (SP, SP). Openings SP <b> 2 to SP <b> 2 (see FIGS. 7 to 10) that pass toward 230 and 230 are provided. The openings SP2 to SP2 are through holes penetrating in the optical axis direction of the light emitting elements (210, 210), (210, 210) (longitudinal direction of the light guide members 230, 230).

詳しくは、開口SP2〜SP2は、発光素子(210,210),(210,210)の外形と同じ又は略同じ形状(相似形状又は略相似形状)とされている。開口SP2〜SP2は、サイズが発光素子(210,210),(210,210)の外形のサイズよりも小さくなっている。具体的には、開口SP2〜SP2は、四角形状とされている。   Specifically, the openings SP2 to SP2 have the same or substantially the same shape (similar shape or substantially similar shape) as the outer shape of the light emitting elements (210, 210) and (210, 210). The sizes of the openings SP2 to SP2 are smaller than the size of the outer shape of the light emitting elements (210, 210) and (210, 210). Specifically, the openings SP2 to SP2 are rectangular.

第2実施形態によると、介在部材(SP,SP),(SP,SP)には、発光素子(210,210),(210,210)からの光を導光部材230,230に向けて通過させる開口SP2〜SP2が設けられていることで、発光素子(210,210),(210,210)の発光面(210a,210a),(210a,210a)と導光部材230,230の光入射面(230a,230a),(230a,230a)との間において発光素子(210,210),(210,210)からの光を遮るものをなくすことができ、これにより、発光素子(210,210),(210,210)からの光を導光部材230,230の光入射面(230a,230a),(230a,230a)に確実に入射させることができる。   According to the second embodiment, the light from the light emitting elements (210, 210), (210, 210) passes through the interposed members (SP, SP), (SP, SP) toward the light guide members 230, 230. Since the openings SP2 to SP2 are provided, the light emitting surfaces (210a, 210a), (210a, 210a) of the light emitting elements (210, 210), (210, 210) and the light incident on the light guide members 230, 230 are provided. It is possible to eliminate light blocking from the light emitting elements (210, 210) and (210, 210) between the surfaces (230a, 230a) and (230a, 230a), and thereby the light emitting elements (210, 210). ), (210, 210) can be reliably incident on the light incident surfaces (230a, 230a), (230a, 230a) of the light guide members 230, 230.

なお、介在部材SPが不透明部材又は半透明部材で構成されているか否かに関わらず(介在部材SPが透明部材で構成されている場合であっても)、介在部材SPに開口SP2を設けるようにしてもよい。   Regardless of whether or not the intervening member SP is made of an opaque member or a translucent member (even when the intervening member SP is made of a transparent member), the intervening member SP is provided with the opening SP2. It may be.

(第3実施形態)
第3実施形態に係る照明装置200は、介在部材(SP,SP),(SP,SP)〔具体的には導光部材230,230の伸縮による介在部材(SP,SP),(SP,SP)〕を介した発光素子(210,210),(210,210)及び発光素子(210,210),(210,210)を搭載した基板220,220の移動を許容し、且つ、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持する構成とされている。
(Third embodiment)
The lighting device 200 according to the third embodiment includes intervening members (SP, SP), (SP, SP) [specifically, interposing members (SP, SP) and (SP, SP) due to expansion and contraction of the light guide members 230, 230. )] Through the light emitting elements (210, 210), (210, 210) and the substrates 220, 220 on which the light emitting elements (210, 210), (210, 210) are mounted, and the light guide member. The substrates 220 and 220 on which the interposing members (SP, SP), (SP, SP) and the light emitting elements (210, 210), (210, 210) are mounted on the light emitting elements (210, 210). , (210, 210) and the light guide members 230, 230 are held in a state where a predetermined distance d to d is maintained.

第3実施形態によると、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持することができる。そして、たとえ導光部材230,230が伸縮しても、導光部材230,230の伸縮による介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び発光素子(210,210),(210,210)を搭載した基板220,220の移動を許容することができる。例えば、導光部材230,230が膨張するときには、導光部材230,230の膨張に伴う介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び発光素子(210,210),(210,210)を搭載した基板220,220の導光部材230,230側とは反対側への移動を許容しつつ導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持することができる。また、導光部材230,230が収縮するときには、導光部材230,230の収縮に伴う介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び発光素子(210,210),(210,210)を搭載した基板220,220の導光部材230,230側への移動を許容しつつ導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持することができる。   According to the third embodiment, the substrate 220 on which the interposed members (SP, SP), (SP, SP) and the light emitting elements (210, 210), (210, 210) are mounted on the light guide members 230, 230. , 220 can be held while maintaining a predetermined distance d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230. And even if the light guide members 230 and 230 expand and contract, the light emitting elements (210 and 210) and (210) via the interposition members (SP and SP) and (SP and SP) due to the expansion and contraction of the light guide members 230 and 230, respectively. 210) and the substrates 220, 220 on which the light emitting elements (210, 210), (210, 210) are mounted can be allowed to move. For example, when the light guide members 230, 230 expand, the light emitting elements (210, 210), (210, 210) via the interposition members (SP, SP), (SP, SP) accompanying the expansion of the light guide members 230, 230. 210) and the light-emitting elements (210, 210), (210, 210) mounted on the light guide members 230, 230 while allowing movement of the substrates 220, 220 to the side opposite to the light guide members 230, 230 side. The intervening members (SP, SP), (SP, SP) and the substrates 220, 220 on which the light emitting elements (210, 210), (210, 210) are mounted are made to the light emitting elements (210, 210), (210, 210). And a predetermined distance d to d between the light guide members 230 and 230 can be maintained. When the light guide members 230 and 230 contract, the light emitting elements (210, 210), (210, 210) through the interposition members (SP, SP) and (SP, SP) accompanying the contraction of the light guide members 230 and 230 210) and the light-emitting elements (210, 210), (210, 210) mounted on the light guide members 230, 230 with respect to the light guide members 230, 230 while allowing the substrates 220, 220 to move to the light guide members 230, 230 side. SP, SP), (SP, SP), and the light-emitting elements (210, 210), (210, 210) and the light-emitting elements (210, 210), (210, 210) are mounted on the substrates 220 and 220 as light guides. The predetermined distances d to d between the members 230 and 230 can be maintained.

なお、図5から図7に示す螺子部材DS及びコイルバネ280並びに図9に示す貫通孔220h等については、後ほど説明する。   The screw member DS and the coil spring 280 shown in FIGS. 5 to 7 and the through hole 220h shown in FIG. 9 will be described later.

次に、第3実施形態の具体的な構成を図11から図13を参照しながら以下に説明する。   Next, a specific configuration of the third embodiment will be described below with reference to FIGS.

(第3実施形態の一例及び他の例)
図11及び図12は、それぞれ、第3実施形態の一例及び他の例を説明するための説明図であって、照明装置200の長手方向における一端部を示す概略断面図である。図13は、第3実施形態の他の例において放熱部材270,270が基台111fに取り付けられている構成を示す側面図であって、図13(a)は、弾性部材290の一例としてコイルバネ291を用いた例を示しており、図13(b)は、弾性部材290の他の例として波ワッシャー292を用いた例を示している。
(One example of the third embodiment and other examples)
FIGS. 11 and 12 are explanatory views for explaining an example and another example of the third embodiment, respectively, and are schematic cross-sectional views showing one end portion of the lighting device 200 in the longitudinal direction. FIG. 13 is a side view showing a configuration in which the heat dissipating members 270 and 270 are attached to the base 111f in another example of the third embodiment. FIG. 13A is a coil spring as an example of the elastic member 290. FIG. 13B shows an example using a wave washer 292 as another example of the elastic member 290.

ここで、図11に示す第3実施形態の一例と図12に示す第3実施形態の他の例とは、第3実施形態の一例が螺子部材DS,DSにおける頭部DS1,DS1に当接されたコイルバネ(直巻スプリング)280,280(付勢部材の一例)により基板220,220を直接的に押圧しているのに対して、第3実施形態の他の例が螺子部材DS,DSにおける頭部DS1,DS1に当接されたコイルバネ280,280により間接部材(この例では放熱部材270,270)を介して基板220,220を押圧している点で異なっており、その他は同じ構成とされている。   Here, the example of the third embodiment shown in FIG. 11 and the other example of the third embodiment shown in FIG. 12 are in contact with the heads DS1 and DS1 of the screw members DS and DS. Whereas the coil springs (directly wound springs) 280, 280 (an example of an urging member) directly press the substrates 220, 220, another example of the third embodiment is the screw members DS, DS. Are different in that the substrates 220 and 220 are pressed via indirect members (in this example, the heat dissipation members 270 and 270) by the coil springs 280 and 280 in contact with the heads DS1 and DS1 in FIG. It is said that.

なお、前述した図3において、放熱部材270,270は、図13(b)を示す構成を示している。   In addition, in FIG. 3 mentioned above, the thermal radiation members 270 and 270 have shown the structure which shows FIG.13 (b).

第3実施形態の一例及び他の例に係る照明装置200は、導光部材230,230を取り付けるホルダー部材240(図5から図7、図11及び図12参照)と、基板220,220に挿通して基板220,220がホルダー部材240に対して導光部材230,230側及び導光部材230,230側とは反対側への移動自在な状態でホルダー部材240に螺合する螺子部材DS,DS(図5から図7、図11及び図12参照)と、螺子部材DS,DSにおける頭部DS1,DS1(図11及び図12参照)及び基板220,220の間に設けられる(この例では挿通される)コイルバネ280,280(図5から図7、図11及び図12参照)とをさらに備えている。   The lighting device 200 according to the example of the third embodiment and another example is inserted into the holder member 240 (see FIGS. 5 to 7, 11, and 12) to which the light guide members 230 and 230 are attached, and the substrates 220 and 220. Then, the screw members DS that are screwed into the holder member 240 in a state where the substrates 220 and 220 are movable to the light guide members 230 and 230 side and the side opposite to the light guide members 230 and 230 side with respect to the holder member 240. DS (see FIGS. 5 to 7, 11 and 12) and the heads DS1 and DS1 (see FIGS. 11 and 12) and the substrates 220 and 220 of the screw members DS and DS (in this example) Coil springs 280 and 280 (see FIG. 5 to FIG. 7, FIG. 11 and FIG. 12) are further provided.

詳しくは、ホルダー部材240は、導光部材230,230を長手方向に移動自在に載置して螺子部材DS,DSにおける雄螺子部DS2,DS2(図11及び図12参照)と螺合する雌螺子孔240a,240a(図11及び図12参照)を有している。基板220,220には、貫通孔220h,220h(図9、図11及び図12参照)が設けられている。貫通孔220h,220hは、ホルダー部材240における雌螺子孔240a,240aに対応した位置において厚み方向に貫通している。   Specifically, the holder member 240 is a female member in which the light guide members 230 and 230 are movably mounted in the longitudinal direction and screwed with the male screw portions DS2 and DS2 (see FIGS. 11 and 12) of the screw members DS and DS. Screw holes 240a, 240a (see FIGS. 11 and 12) are provided. The substrates 220 and 220 are provided with through holes 220h and 220h (see FIGS. 9, 11 and 12). The through holes 220h and 220h penetrate in the thickness direction at positions corresponding to the female screw holes 240a and 240a in the holder member 240.

螺子部材DS,DSは、頭部DS1,DS1、雄螺子部DS2,DS2及び軸部DS3,DS3(図11及び図12参照)を有しており、いわゆる段ビスと称されるものである。頭部DS1,DS1は、スクリュードライバーにより軸線回りに回される係止溝(図示せず)を有している。雄螺子部DS2,DS2は、ホルダー部材240における雌螺子孔240a,240aと螺合する。軸部DS3,DS3は、一端が頭部DS1,DS1に連接され、且つ、他端が雄螺子部DS2,DS2に連接されて基板220,220における貫通孔220h,220hに挿通される。螺子部材DS,DSは、頭部DS1,DS1、雄螺子部DS2,DS2及び軸部DS3,DS3が一体形成されている。   The screw members DS and DS have head portions DS1 and DS1, male screw portions DS2 and DS2, and shaft portions DS3 and DS3 (see FIGS. 11 and 12), and are so-called corrugated screws. The heads DS1 and DS1 have locking grooves (not shown) that are turned around the axis by a screwdriver. The male screw portions DS2 and DS2 are screwed into the female screw holes 240a and 240a in the holder member 240. The shaft portions DS3, DS3 are connected to the head portions DS1, DS1 at one end, and connected to the male screw portions DS2, DS2 at the other end and inserted into the through holes 220h, 220h in the substrates 220, 220. The screw members DS and DS are integrally formed with head portions DS1 and DS1, male screw portions DS2 and DS2, and shaft portions DS3 and DS3.

基板220,220は、貫通孔220h,220hの内径が螺子部材DS,DSにおける軸部DS3,DS3の外形よりも若干(軸部DS3,DS3が貫通孔220h,220hに長手方向に沿って円滑に往復移動できる程度に所定量だけ)大きくなっている。   In the substrates 220 and 220, the inner diameters of the through holes 220h and 220h are slightly larger than the outer shapes of the shaft portions DS3 and DS3 in the screw members DS and DS (the shaft portions DS3 and DS3 are smoothly in the through holes 220h and 220h along the longitudinal direction). It is large enough to be able to reciprocate).

コイルバネ280,280は、螺子部材DS,DSにおける頭部DS1,DS1及び基板220,220(第3実施形態の他の例では放熱部材270,270)の間において螺子部材DS,DSにおける軸部DS3,DS3に挿通される。   The coil springs 280 and 280 are shaft portions DS3 of the screw members DS and DS between the heads DS1 and DS1 of the screw members DS and DS and the substrates 220 and 220 (heat dissipating members 270 and 270 in another example of the third embodiment). , DS3 is inserted.

また、放熱部材270,270には、貫通孔270h,270h(図11及び図12参照)が設けられている。貫通孔270h,270hは、ホルダー部材240における雌螺子孔240a,240a及び基板220,220における貫通孔220h,220hに対応した位置において厚み方向に貫通している。   Further, the heat dissipation members 270 and 270 are provided with through holes 270h and 270h (see FIGS. 11 and 12). The through holes 270 h and 270 h penetrate in the thickness direction at positions corresponding to the female screw holes 240 a and 240 a in the holder member 240 and the through holes 220 h and 220 h in the substrates 220 and 220.

−第3実施形態の一例−
第3実施形態の一例(図11参照)では、ホルダー部材240は、基台111fに対してビス等の固定部材(図示せず)により固定されている。
-Example of the third embodiment-
In an example of the third embodiment (see FIG. 11), the holder member 240 is fixed to the base 111f by a fixing member (not shown) such as a screw.

放熱部材270,270は、貫通孔270h,270hの内径がコイルバネ280,280の外形よりも若干(コイルバネ280,280が貫通孔270h,270hに接触しない程度に所定量だけ)大きくなっている。   In the heat radiation members 270 and 270, the inner diameters of the through holes 270h and 270h are slightly larger than the outer shapes of the coil springs 280 and 280 (a predetermined amount so that the coil springs 280 and 280 do not contact the through holes 270h and 270h).

コイルバネ280,280は、一端部が螺子部材DS,DSにおける頭部DS1,DS1の内面DS1a(図11参照)に当接する一方、他端部が放熱部材270,270における貫通孔270h,270hに挿通されて基板220,220の導光部材230,230側とは反対側の反対側面220a(図11参照)に当接している。   The coil springs 280 and 280 have one end abutting against the inner surface DS1a (see FIG. 11) of the heads DS1 and DS1 of the screw members DS and DS, and the other end inserted into the through holes 270h and 270h of the heat dissipation members 270 and 270. Thus, the substrate 220 is in contact with the opposite side surface 220a (see FIG. 11) opposite to the light guide member 230, 230 side.

ここで、コイルバネ280,280により基板220,220を押圧する付勢力は、導光部材230,230の伸縮により介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220の移動を許容する一方、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を保持することができる程度の力とされている。   Here, the biasing force that presses the substrates 220 and 220 by the coil springs 280 and 280 is caused by the expansion and contraction of the light guide members 230 and 230, and the interposing members (SP, SP), (SP, SP) and the light emitting elements (210, 210). ), (210, 210) on which the substrates 220, 220 mounted are allowed to move, while the interposing members (SP, SP), (SP, SP) and the light emitting element (210) with respect to the light guide members 230, 230 are allowed. , 210), (210, 210) is set to a force that can hold the substrates 220, 220 mounted thereon.

この例では、コイルバネ280及び螺子部材DSは、1つの基板220に対して1つのコイルバネ280及び1つの螺子部材DSが設けられている。但し、それに限定されるものではなく、1つの基板220に対して複数のコイルバネ280〜280及び複数の螺子部材DS〜DSが設けられていてもよい。   In this example, the coil spring 280 and the screw member DS are provided with one coil spring 280 and one screw member DS for one substrate 220. However, the present invention is not limited to this, and a plurality of coil springs 280 to 280 and a plurality of screw members DS to DS may be provided for one substrate 220.

−第3実施形態の他の例−
また、第3実施形態の他の例(図12参照)では、ホルダー部材240は、基台111fに対して固定されておらず(載置されているか又は離間しており)、放熱部材270,270は、基台111fに対して長手方向に移動可能に保持された状態で導光部材230,230の長手方向における両側から介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を介して挟持している。
-Another example of the third embodiment-
In another example of the third embodiment (see FIG. 12), the holder member 240 is not fixed to the base 111f (is placed or separated), and the heat dissipation member 270, 270 is interposed members (SP, SP), (SP, SP) and light emitting elements from both sides in the longitudinal direction of the light guide members 230, 230 while being held movably in the longitudinal direction with respect to the base 111f. (210, 210) and (210, 210) are sandwiched between the substrates 220, 220 mounted.

放熱部材270,270は、貫通孔270h,270hの内径が螺子部材DS,DSにおける軸部DS3,DS3の外形よりも若干(軸部DS3,DS3が貫通孔270h,270hに長手方向に沿って円滑に往復移動できる程度に所定量だけ)大きく、且つ、コイルバネ280,280の外形よりも若干(コイルバネ280,280が貫通孔270h,270hを通過しない程度に所定量だけ)小さくなっている。   In the heat dissipating members 270 and 270, the inner diameters of the through holes 270h and 270h are slightly larger than the outer shapes of the shaft portions DS3 and DS3 of the screw members DS and DS (the shaft portions DS3 and DS3 are smooth along the longitudinal direction of the through holes 270h and 270h) And is slightly smaller than the outer shape of the coil springs 280, 280 (by a predetermined amount so that the coil springs 280, 280 do not pass through the through holes 270h, 270h).

コイルバネ280,280は、一端部が螺子部材DS,DSにおける頭部DS1,DS1の内面DS1a(図12参照)に当接する一方、他端部が放熱部材270,270の導光部材230,230側とは反対側の反対側面270a(図12参照)に当接している。   The coil springs 280 and 280 have one end abutting against the inner surface DS1a (see FIG. 12) of the heads DS1 and DS1 of the screw members DS and DS, and the other end being on the light guide members 230 and 230 side of the heat dissipation members 270 and 270. Is in contact with the opposite side surface 270a (see FIG. 12) on the opposite side.

ここで、コイルバネ280,280により放熱部材270,270を介して基板220,220を押圧する付勢力は、導光部材230,230の伸縮により介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220並びに放熱部材270,270の移動を許容することができる程度の力とされている。   Here, the urging force that presses the substrates 220 and 220 via the heat dissipation members 270 and 270 by the coil springs 280 and 280 is caused by the expansion and contraction of the light guide members 230 and 230, so that the interposition members (SP, SP), (SP, SP), In addition, the force is such that the movement of the substrates 220 and 220 and the heat radiation members 270 and 270 on which the light emitting elements (210 and 210) and (210 and 210) are mounted can be allowed.

また、放熱部材270,270は、弾性部材290(図13参照)を介して固定部材SC(この例では螺子部材)(図12及び図13参照)によって基台111fに対して長手方向に摺動可能に取り付けられている。   Further, the heat radiation members 270 and 270 slide in the longitudinal direction with respect to the base 111f by the fixing member SC (screw member in this example) (see FIGS. 12 and 13) via the elastic member 290 (see FIG. 13). It is attached as possible.

詳しくは、放熱部材270,270には、基台111fに取り付けるための板状の取付部271,271(図12及び図13参照)が設けられている。基台111fには、1つの取付部271に対して1つ又は複数の雌螺子孔111fa(この例では2つの雌螺子孔111fa,111fa)(図12及び図13参照)が設けられている。取付部271,271の基台111fにおける雌螺子孔(111fa,111fa),(111fa,111fa)に対応する位置には、長手方向に長尺な長孔(271a,271a),(271a,271a)(図12及び図13参照)が設けられている。   Specifically, the heat dissipating members 270 and 270 are provided with plate-like attachment portions 271 and 271 (see FIGS. 12 and 13) for attachment to the base 111f. The base 111f is provided with one or a plurality of female screw holes 111fa (two female screw holes 111fa and 111fa in this example) (see FIGS. 12 and 13) for one mounting portion 271. In the positions corresponding to the female screw holes (111fa, 111fa), (111fa, 111fa) in the base 111f of the mounting portions 271, 271 are elongated holes (271a, 271a), (271a, 271a) elongated in the longitudinal direction. (See FIG. 12 and FIG. 13).

固定部材(SC,SC),(SC,SC)は、スクリュードライバーにより軸線回りに回される係止溝(図示せず)を有する頭部(SC1,SC1),(SC1,SC1)(図13参照)と、基台111fにおける雌螺子孔(111fa,111fa),(111fa,111fa)と螺合する固定部(SC2,SC2),(SC2,SC2)(この例では雄螺子部)(図13参照)とを有している。固定部材(SC,SC),(SC,SC)は、頭部(SC1,SC1),(SC1,SC1)及び固定部(SC2,SC2),(SC2,SC2)が一体形成されている。   The fixing members (SC, SC), (SC, SC) have heads (SC1, SC1), (SC1, SC1) (FIG. 13) having locking grooves (not shown) that are turned around the axis by a screwdriver. And fixing portions (SC2, SC2), (SC2, SC2) (in this example, male screw portions) that are screwed into the female screw holes (111fa, 111fa), (111fa, 111fa) in the base 111f (FIG. 13). Reference). The fixing members (SC, SC), (SC, SC) are integrally formed with heads (SC1, SC1), (SC1, SC1) and fixing parts (SC2, SC2), (SC2, SC2).

弾性部材(290,290),(290,290)(図13(a)に示す例ではコイルバネ291、図13(b)に示す例では波ワッシャー292)は、固定部材(SC,SC),(SC,SC)の頭部(SC1,SC1),(SC1,SC1)(図3参照)と取付部271,271との間において(固定部SC2,SC2),(SC2,SC2)に挿通されている。   Elastic members (290, 290), (290, 290) (coil spring 291 in the example shown in FIG. 13 (a), wave washer 292 in the example shown in FIG. 13 (b)) are fixed members (SC, SC), ( SC, SC) are inserted into (fixed portions SC2, SC2), (SC2, SC2) between the heads (SC1, SC1), (SC1, SC1) (see FIG. 3) and the mounting portions 271, 271. Yes.

ここで、弾性部材(290,290),(290,290)により基台111f及び弾性部材(290,290),(290,290)と取付部271,271との間に働く摩擦力は、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を保持することができる程度の力であって、コイルバネ280,280の付勢力と足し合わせた力が導光部材230,230の伸縮により介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220並びに放熱部材270,270の移動を許容することができる程度の力とされている。   Here, the frictional force acting between the base 111f and the elastic members (290, 290), (290, 290) and the mounting portions 271, 271 by the elastic members (290, 290), (290, 290) is guided. The intervening members (SP, SP), (SP, SP) and the substrates 220, 220 on which the light emitting elements (210, 210), (210, 210) are mounted can be held on the optical members 230, 230. The force added to the urging force of the coil springs 280 and 280 is an intermediate member (SP, SP), (SP, SP), and the light emitting element (210, 210) and (210, 210) on which the substrates 220 and 220 and the heat dissipating members 270 and 270 are mounted are set to such a force that allows the movement.

第3実施形態の一例及び他の例によると、ホルダー部材240は、導光部材230,230を載置し、螺子部材DS,DSは、基板220,220に挿通して基板220,220がホルダー部材240に対して導光部材230,230側及び導光部材230,230側とは反対側への移動自在な状態でホルダー部材240に螺合し、コイルバネ280,280は、螺子部材DS,DSにおける頭部DS1,DS1及び基板220,220の間に設けられることで、導光部材230,230の伸縮に伴ってコイルバネ280,280を圧縮又は伸張させることができる。   According to an example of the third embodiment and another example, the holder member 240 mounts the light guide members 230 and 230, and the screw members DS and DS are inserted into the substrates 220 and 220 so that the substrates 220 and 220 are the holders. The member 240 is screwed into the holder member 240 while being movable to the light guide members 230 and 230 side and the side opposite to the light guide members 230 and 230 side, and the coil springs 280 and 280 are screw members DS and DS. Are provided between the heads DS1 and DS1 and the substrates 220 and 220, so that the coil springs 280 and 280 can be compressed or expanded as the light guide members 230 and 230 expand and contract.

すなわち、導光部材230,230が膨張するときには、導光部材230,230の膨張に伴ってコイルバネ280,280を圧縮させることができ、これにより、介在部材(SP,SP),(SP,SP)を介して発光素子(210,210),(210,210)及び基板220,220(さらには放熱部材270,270)を導光部材230,230側とは反対側へ移動させることができると共に、コイルバネ280,280を圧縮させた状態で伸びる方向に働くコイルバネ280,280の付勢力(弾性力)により発光素子(210,210),(210,210)を搭載した基板220,220及び介在部材(SP,SP),(SP,SP)を導光部材230,230に向けて押圧させることができる。このとき、第3実施形態の他の例では(図12参照)、放熱部材270,270が固定部材SC及び弾性部材290により基台111fに保持されながらも導光部材230,230側とは反対側へ移動する。これにより、第3実施形態の一例及び他の例では、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持することができる。   That is, when the light guide members 230 and 230 are expanded, the coil springs 280 and 280 can be compressed in accordance with the expansion of the light guide members 230 and 230, whereby the interposition members (SP, SP), (SP, SP ) And the light emitting elements (210, 210), (210, 210) and the substrates 220, 220 (and the heat dissipation members 270, 270) can be moved to the opposite side of the light guide members 230, 230 side. The substrate 220, 220 on which the light emitting elements (210, 210), (210, 210) are mounted by the urging force (elastic force) of the coil springs 280, 280 acting in the direction in which the coil springs 280, 280 are compressed and the interposed member (SP, SP), (SP, SP) can be pressed toward the light guide members 230, 230. At this time, in another example of the third embodiment (see FIG. 12), the heat radiation members 270 and 270 are held on the base 111f by the fixing member SC and the elastic member 290, but opposite to the light guide members 230 and 230 side. Move to the side. Thereby, in the example and other examples of the third embodiment, the interposed members (SP, SP), (SP, SP), and the light emitting elements (210, 210), (210) with respect to the light guide members 230, 230. , 210) is held in a state where a predetermined distance d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 is maintained. it can.

一方、導光部材230,230が収縮するときには、導光部材230,230の収縮に伴ってコイルバネ280,280を伸長させることができ、これにより、介在部材(SP,SP),(SP,SP)を介して発光素子(210,210),(210,210)及び基板220,220(さらには放熱部材270,270)を導光部材230,230側へ移動させることができると共に、コイルバネ280,280を圧縮させた状態で伸びる方向に働くコイルバネ280,280の付勢力(弾性力)により発光素子(210,210),(210,210)を搭載した基板220,220及び介在部材(SP,SP),(SP,SP)を導光部材230,230に向けて押圧させることができる。このとき、第3実施形態の他の例では(図12参照)、放熱部材270,270が固定部材SC及び弾性部材290により基台111fに保持されながらも導光部材230,230側へ移動する。これにより、第3実施形態の一例及び他の例では、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持することができる。   On the other hand, when the light guide members 230 and 230 contract, the coil springs 280 and 280 can be extended along with the contraction of the light guide members 230 and 230, whereby the interposition members (SP, SP), (SP, SP ) Can move the light emitting elements (210, 210), (210, 210) and the substrates 220, 220 (and the heat dissipation members 270, 270) toward the light guide members 230, 230, and the coil springs 280, The substrates 220 and 220 on which the light emitting elements (210, 210) and (210, 210) are mounted by the biasing force (elastic force) of the coil springs 280 and 280 that work in the direction in which the 280 is compressed and the interposition members (SP and SP). ), (SP, SP) can be pressed toward the light guide members 230, 230. At this time, in another example of the third embodiment (see FIG. 12), the heat radiating members 270 and 270 move to the light guide members 230 and 230 side while being held on the base 111f by the fixing member SC and the elastic member 290. . Thereby, in the example and other examples of the third embodiment, the interposed members (SP, SP), (SP, SP), and the light emitting elements (210, 210), (210) with respect to the light guide members 230, 230. , 210) is held in a state where a predetermined distance d to d between the light emitting elements (210, 210), (210, 210) and the light guide members 230, 230 is maintained. it can.

従って、介在部材(SP,SP),(SP,SP)を介した発光素子(210,210),(210,210)及び基板220,220の移動を許容し、且つ、導光部材230,230に対して介在部材(SP,SP),(SP,SP)、及び、発光素子(210,210),(210,210)を搭載した基板220,220を発光素子(210,210),(210,210)と導光部材230,230との間の所定の距離d〜dを維持した状態で保持する構成を簡単に且つ容易に実現させることができる。   Therefore, movement of the light emitting elements (210, 210), (210, 210) and the substrates 220, 220 via the interposition members (SP, SP), (SP, SP) is allowed, and the light guide members 230, 230 are allowed. In contrast, the substrates 220 and 220 on which the interposition members (SP, SP), (SP, SP) and the light emitting elements (210, 210), (210, 210) are mounted are light emitting elements (210, 210), (210 210) and the light guide members 230, 230 can be easily and easily realized in a state where the predetermined distances d to d are maintained.

本発明は、以上説明した実施の形態に限定されるものではなく、他のいろいろな形で実施することができる。そのため、かかる実施の形態はあらゆる点で単なる例示にすぎず、限定的に解釈してはならない。本発明の範囲は請求の範囲によって示すものであって、明細書本文には、なんら拘束されない。さらに、請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。   The present invention is not limited to the embodiment described above, and can be implemented in various other forms. Therefore, such an embodiment is merely an example in all respects and should not be interpreted in a limited manner. The scope of the present invention is shown by the scope of claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

100 画像形成装置
110 画像読取装置
111 原稿読取部
111f 基台
111fa 雌螺子孔
120 画像形成装置本体
200 照明装置
210 発光素子
210a 発光面
210a1 外周縁部
210b 外周側面
210b1 周縁部
220 基板
220a 反対側面
220h 貫通孔
230 導光部材
230a 光入射面
230b 光出射面
230c 光反射面
240 ホルダー部材(取付部材の一例)
240a 雌螺子孔
240f ホルダー部材本体
241 壁部
242 支持部
242a 凹部
270 放熱部材
270a 反対側面
270h 貫通孔
271 取付部
280 コイルバネ(付勢部材の一例)
290 弾性部材
291 コイルバネ
292 波ワッシャー
DS 螺子部材
DS1 頭部
DS1a 内面
DS2 雄螺子部
DS3 軸部
SC 固定部材
SC1 頭部
SC2 固定部
SP 介在部材
SP1 規制部
SP2 開口
SPa 第1接触部
SPb 第2接触部
ST 放熱シート
X 主走査方向
Y 副走査方向
Z 上下方向
d 所定の距離
100 Image forming apparatus 110 Image reading apparatus 111 Document reading section 111f Base 111fa Female screw hole 120 Image forming apparatus main body 200 Illuminating device 210 Light emitting element 210a Light emitting surface 210a1 Outer peripheral edge 210b Outer peripheral side 210b1 Peripheral part 220 Substrate 220a Opposite side 220h Through Hole 230 Light guiding member 230a Light incident surface 230b Light emitting surface 230c Light reflecting surface 240 Holder member (an example of a mounting member)
240a Female screw hole 240f Holder member main body 241 Wall portion 242 Support portion 242a Recess 270 Heat dissipation member 270a Opposite side surface 270h Through hole 271 Mounting portion 280 Coil spring (an example of a biasing member)
290 Elastic member 291 Coil spring 292 Wave washer DS Screw member DS1 Head DS1a Inner surface DS2 Male screw part DS3 Shaft part SC Fixing member SC1 Head SC2 Fixing part SP Interposing member SP1 Restriction part SP2 Opening SPa First contact part SPb Second contact part ST Heat dissipation sheet X Main scanning direction Y Sub-scanning direction Z Vertical direction d Predetermined distance

Claims (8)

発光素子と、前記発光素子を搭載する基板と、前記発光素子から出射される光を導光する導光部材とを備えた照明装置であって、
前記発光素子と前記導光部材との間に前記発光素子と前記導光部材とを予め定めた所定の距離に維持する介在部材が設けられており、
前記導光部材を取り付ける取付部材と、
前記基板に挿通して前記基板が前記取付部材に対して前記導光部材側及び前記導光部材側とは反対側への移動自在な状態で前記取付部材に螺合する螺子部材と、
前記螺子部材における頭部及び前記基板の間に設けられる付勢部材と
を備えることを特徴とする照明装置。
A lighting device comprising: a light emitting element; a substrate on which the light emitting element is mounted; and a light guide member that guides light emitted from the light emitting element.
An interposition member is provided between the light emitting element and the light guide member to maintain the light emitting element and the light guide member at a predetermined distance ,
An attachment member for attaching the light guide member;
A screw member that is inserted into the substrate and screwed into the mounting member in a state in which the substrate is movable to the light guide member side and the side opposite to the light guide member side with respect to the mounting member;
A biasing member provided between the head of the screw member and the substrate;
Lighting apparatus comprising: a.
請求項1に記載の照明装置であって、
前記介在部材は、前記発光素子に対する前記発光素子から出射される光の光軸方向に直交する方向への移動を規制する構成とされていることを特徴とする照明装置。
The lighting device according to claim 1,
The interposition member is configured to restrict movement of light emitted from the light emitting element relative to the light emitting element in a direction orthogonal to an optical axis direction.
請求項1又は請求項2に記載の照明装置であって、
前記介在部材は、前記発光素子の外周側面の少なくとも発光面に連接した周縁部に接触する構成とされていることを特徴とする照明装置。
The lighting device according to claim 1 or 2,
The lighting device according to claim 1, wherein the interposition member is in contact with at least a peripheral edge connected to the light emitting surface of the outer peripheral side surface of the light emitting element.
請求項1から請求項3までの何れか1つに記載の照明装置であって、
前記介在部材は、前記発光素子の発光面の少なくとも外周縁部に接触する構成とされていることを特徴とする照明装置。
It is an illuminating device as described in any one of Claim 1- Claim 3, Comprising:
The illumination device, wherein the interposition member is configured to contact at least an outer peripheral edge portion of a light emitting surface of the light emitting element.
請求項1から請求項4までの何れか1つに記載の照明装置であって、
前記介在部材には、前記発光素子からの光を前記導光部材に向けて通過させる開口が設けられていることを特徴とする照明装置。
It is an illuminating device as described in any one of Claim 1- Claim 4, Comprising:
The illumination device, wherein the interposition member is provided with an opening through which light from the light emitting element passes toward the light guide member.
請求項1から請求項5までの何れか1つに記載の照明装置であって、
前記介在部材を介した前記発光素子及び前記発光素子を搭載した前記基板の移動を許容し、且つ、前記導光部材に対して前記介在部材、及び、前記発光素子を搭載した前記基板を前記発光素子と前記導光部材との間の前記所定の距離を維持した状態で保持する構成とされていることを特徴とする照明装置。
It is an illuminating device as described in any one of Claim 1- Claim 5, Comprising:
The light emitting element and the substrate on which the light emitting element is mounted are allowed to move via the interposition member, and the interposition member and the substrate on which the light emitting element is mounted with respect to the light guide member emit light. An illuminating device having a structure in which the predetermined distance between an element and the light guide member is maintained.
請求項1から請求項までの何れか1つに記載の照明装置を備えたことを特徴とする画像読取装置。 An image reading apparatus comprising the illumination device according to any one of claims 1 to 6 . 請求項に記載の画像読取装置を備えたことを特徴とする画像形成装置。 An image forming apparatus comprising the image reading apparatus according to claim 7 .
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