JP5670710B2

JP5670710B2 - Lighting device

Info

Publication number: JP5670710B2
Application number: JP2010266951A
Authority: JP
Inventors: 恭宏小平; 曜命神永; 雄二横田
Original assignee: Koito Electric IndustriesLtd
Current assignee: Koito Electric IndustriesLtd
Priority date: 2010-06-08
Filing date: 2010-11-30
Publication date: 2015-02-18
Anticipated expiration: 2030-11-30
Also published as: JP2012017090A; JP2015072919A; JP5921649B2

Description

本発明は、光源が取り付けられ、該光源から照射された光を受けて間接的に外部を照らす反射面を備えたケーシングと、前記光源を外側から覆う状態で前記ケーシングに装着される保護カバーとから成る照明装置に関し、特に、鉄道車両や航空機、自動車等の客室内の間接照明に用いられる照明装置に関する。 The present invention includes a casing provided with a light source and a reflecting surface that receives light emitted from the light source and indirectly illuminates the outside, and a protective cover that is attached to the casing so as to cover the light source from the outside. In particular, the present invention relates to a lighting device used for indirect lighting in a passenger room of a railway vehicle, an aircraft, an automobile, or the like.

従来より、鉄道車両や航空機、自動車等の客室内に用いる照明装置としては、例えば、客室内の天井部に取り付ける間接照明装置が知られている（例えば、特許文献１参照）。これは、反射枠板の内面に対設したソケット間に蛍光灯を取り付け、該蛍光灯の下面から内側面にかけて被覆するランプカバーを備えるものであった。 2. Description of the Related Art Conventionally, as an illuminating device used in a passenger compartment of a railway vehicle, an aircraft, an automobile, etc., for example, an indirect illuminating device attached to a ceiling portion in the passenger cabin is known (for example, see Patent Document 1). This is provided with a lamp cover for attaching a fluorescent lamp between the sockets facing the inner surface of the reflection frame plate and covering the fluorescent lamp from the lower surface to the inner surface.

蛍光灯が点灯されると、下方に投射された光は、ランプカバーで遮られて直射光として外部に照射されることがなく、上方に投射された光が、上側に位置する反射枠板の内面によって下方に反射され、間接照明光として照射される。ここで光源として蛍光灯を用いているが、蛍光灯自体の小型化が困難であるため、装置全体の薄型化を妨げていた。客室内の天井部という限られたスペースに設置することを考えれば、設置の自由度の向上のために照明装置は薄型であることが好ましい。 When the fluorescent lamp is turned on, the light projected downward is not blocked by the lamp cover and is not irradiated to the outside as the direct light, and the light projected upward is reflected on the reflection frame plate located on the upper side. Reflected downward by the inner surface and irradiated as indirect illumination light. Although a fluorescent lamp is used as the light source here, it is difficult to reduce the size of the fluorescent lamp itself, which hinders the overall thinning of the apparatus. Considering installation in a limited space such as a ceiling in a guest room, the lighting device is preferably thin in order to improve installation flexibility.

そこで、光源として、より小型化が可能なＬＥＤランプを用いた照明装置として、例えば、点状光源であるＬＥＤランプが配設された基板と、該ＬＥＤランプを取り囲むように制光体としてのレンズを配設した照明器具が知られている（例えば、特許文献２参照）。ここで、ＬＥＤランプは線状に複数配列しており、ＬＥＤランプとレンズとの配光角は、線状に並べた方向と直交方向において略同一となるように設定されていた。 Therefore, as an illumination device using an LED lamp that can be further miniaturized as a light source, for example, a substrate on which an LED lamp that is a point light source is disposed, and a lens as a light control body so as to surround the LED lamp There is known a luminaire in which is disposed (see, for example, Patent Document 2). Here, a plurality of LED lamps are arranged in a line, and the light distribution angle between the LED lamp and the lens is set to be substantially the same in the direction orthogonal to the direction arranged in a line.

特開平６−２７５１１６号公報JP-A-6-275116 特開２００５−１０４２２４号公報JP-A-2005-104224

前述したように、光源としてＬＥＤランプを用いる場合には、グレア防止あるいはＬＥＤランプの保護のために、レンズのようなカバーが必要となる。かかるカバーの材質としては、アクリルやポリカーボネート等の合成樹脂が最適であるが、カバーに合成樹脂を用いると火災の際に溶融滴下するため、鉄道車両用材料等に使用することができなかった。 As described above, when an LED lamp is used as a light source, a cover such as a lens is required to prevent glare or protect the LED lamp. As the material of the cover, synthetic resin such as acrylic or polycarbonate is optimal. However, if synthetic resin is used for the cover, the cover is melted and dropped in the event of a fire, and thus cannot be used for materials for railway vehicles.

そこで、光源のカバーの材質として、不燃性であり透光性のあるガラスを採用することが考えられるが、一般にガラスは割れやすいといった問題があり、該問題を解決するには肉厚となり重量増加を招くというさらなる問題があった。また、ガラスは、合成樹脂に比べて加工が困難であると共に、材料費も高価であるといった問題もあった。 Therefore, it is conceivable to use nonflammable and translucent glass as the material of the light source cover, but generally there is a problem that the glass is easily broken, and in order to solve the problem, it becomes thick and weight increases. There was a further problem of inviting. In addition, glass is difficult to process as compared with synthetic resin and has a problem that material cost is also expensive.

以上のような従来の照明装置に関する問題点に鑑みて、本件発明者らは既に特願２０１０−１３０７９８号により、光源を覆う保護カバーを合成樹脂により成形したとしても、これらを下方より取り囲む位置まで延出したケーシングの一部に溶融物受け部を設けることにより、万一火災等により保護カバーが溶融したとしても、該溶解物を下方に漏らす虞のない照明装置を提案している。 In view of the problems related to the conventional lighting device as described above, even when the present inventors have already formed a protective cover for covering the light source with a synthetic resin according to Japanese Patent Application No. 2010-130798, the present inventors have taken to the position surrounding them from below. By providing a melt receiving part in a part of the extended casing, even if the protective cover is melted due to a fire or the like, a lighting device is proposed that does not cause the melt to leak downward.

ところが、このような照明装置では、次のような問題を解決するための改良が望まれることになった。すなわち、当初は照明装置を構成するケーシング内の左右の光源が同じ高さで、かつ客室内の天井部の基準面にほぼ合致する位置に配されることを想定していたが、これでは、客室内の天井部の隅に沿って展開された広告のうち特に天井部に沿った面には、ケーシング内で反射された光が届かないという問題が新たに浮上した。 However, such a lighting device has been desired to be improved to solve the following problems. That is, at first, it was assumed that the left and right light sources in the casing constituting the lighting device are arranged at the same height and at a position that substantially matches the reference plane of the ceiling in the cabin. Of the advertisements developed along the corners of the ceiling in the guest room, a problem that the light reflected in the casing does not reach especially on the surface along the ceiling has newly emerged.

本発明は、以上のような従来の技術の有する問題点に着目してなされたものであり、大型化や重量増加を招くことなく、限られたスペース内におけるレイアウトやデザインの自由度も向上し、火災等によってカバーが溶融した場合に溶融物が外部に漏れ出す虞もなく安全性に優れ、しかも、客室内の天井部の隅に沿って展開した広告の全面に対しても、十分に光を照射することができる照明装置を提供することを目的としている。 The present invention has been made by paying attention to the problems of the conventional techniques as described above, and the flexibility of layout and design within a limited space is improved without increasing the size and weight. If the cover melts due to a fire, etc., there is no risk of the molten material leaking to the outside, and it is highly safe, and sufficient light is applied to the entire advertisement spread along the corner of the ceiling in the cabin. It aims at providing the illuminating device which can irradiate.

前述した目的を達成するための本発明の要旨とするところは、以下の各項の発明に存する。
［１］光源（２０）が取り付けられ、該光源（２０）から照射された光を受けて間接的に外部を照らす反射面（１２）を備えたケーシング（１１Ａ）と、前記光源（２０）を外側から覆う状態で前記ケーシング（１１Ａ）に装着される保護カバー（３０）とから成る照明装置（１０）において、
前記ケーシング（１１Ａ）は、長尺に延びており、その長手方向に平行に延びる両側端部（１３，１３）のうち少なくとも一側端部（１３）が、内側に下方から上方に向い湾曲した形状に成形され、
前記光源（２０）は、細幅状に延びる基板（２１）上に沿って設けられ、
前記光源（２０）を含む前記基板（２１）は、前記ケーシング（１１Ａ）の湾曲した側端部（１３）の内側に沿って、該内側の空間を閉じる状態に取り付けられ、
前記保護カバー（３０）は、前記基板（２１）と同じく細幅状に延びるように形成され、前記ケーシング（１１Ａ）の湾曲した側端部（１３）の内側に沿って、前記基板（２１）を外側から覆う状態に装着され、
前記ケーシング（１１Ａ）の湾曲した側端部（１３）の最外縁（１３ａ）は、前記保護カバー（３０）の最下部に対して下方から上方に回り込むように延出しており、該側端部（１３）の最外縁（１３ａ）に、前記保護カバー（３０）が溶融滴下した際の溶融物を導き受け入れる凹溝（４１）を形成したことを特徴とする照明装置（１０）。 The gist of the present invention for achieving the object described above resides in the inventions of the following items.
[1] A casing ( 11A) having a reflection surface (12) to which a light source (20) is attached and receiving light emitted from the light source (20) to indirectly illuminate the outside; and the light source (20) In a lighting device (10) comprising a protective cover (30) mounted on the casing ( 11A) in a state of covering from the outside,
The casing (11A) extends long, and at least one side end portion (13) of both side end portions (13, 13) extending parallel to the longitudinal direction is curved inward from below to above. Molded into shape,
The light source (20) is provided along a substrate (21) extending in a narrow shape,
The substrate (21) including the light source (20) is attached along the inside of the curved side end (13) of the casing (11A) so as to close the inner space.
The protective cover (30) is formed to extend in a narrow width like the substrate (21), and extends along the inside of the curved side end (13) of the casing (11A). Is installed in a state of covering from the outside,
The outermost edge (13a) of the curved side end (13) of the casing (11A) extends from the lower side to the upper side with respect to the lowermost part of the protective cover (30). A lighting device (10) characterized in that a concave groove (41) is formed on the outermost edge (13a) of (13) to receive and receive a melt when the protective cover (30) is melted and dropped .

［２］前記ケーシング（１１Ａ）の湾曲した側端部（１３）の最外縁（１３ａ）と前記基板（２１）との間の空間に、前記保護カバー（３０）が溶融滴下した際の溶融物を導き受け入れることを特徴とする［１］に記載の照明装置（１０）。 [2] space, melting when the protective cover (30) was added dropwise melt between the outermost edges of the curved side edge of the casing (11 A) (13) (13a) and the substrate (21) The lighting device (10) according to [1], wherein an object is guided and received.

［３］客室内（２）の天井部（３）に、前記ケーシング（１１Ａ）をその開口部を下方に向けて埋め込む状態に設置することを特徴とする［１］または［２］に記載の照明装置（１０）。 [3] In [1] or [2] , the casing ( 11A) is installed in the ceiling (3) of the cabin (2) so that the opening is embedded downward. Lighting device (10).

［４］前記客室内（２）の天井部（３）の中心線を対称軸として、左右対称の位置関係で一対の前記ケーシング（１１Ａ）が設置されることを特徴とする［３］に記載の照明装置（１０）。 [4] The pair of casings ( 11A) are installed in a symmetrical relationship with respect to the center line of the ceiling (3) of the cabin (2) in the cabin (2) . Illumination device (10) as described.

［５］前記ケーシング（１１Ｂ，１１Ｃ）は、客室内（２）の天井部（３）に沿って長手方向に延びると共に、前記反射面（１２）により反射された光が、前記天井部（３）と壁面部（４）の境目まで照射可能な状態に設置されることを特徴とする［３］または［４］に記載の照明装置（１０）。 [5] before Symbol casing (11B, 11C) is extends longitudinally along the ceiling of the room (2) (3), the light reflected by said reflecting surface (12), the ceiling ( The illumination device (10) according to [3] or [4] , wherein the illumination device (10) is installed in a state in which irradiation is possible up to the boundary between 3) and the wall surface portion (4).

［６］前記ケーシング（１１Ｂ，１１Ｃ）は、前記反射面（１２）により反射された光が、前記天井部（３）の隅に沿って展開された広告（６）の全面に到達する広告照射状態に設置されることを特徴とする［５］に記載の照明装置（１０）。 [6] In the casing (11B, 11C), the advertisement irradiation in which the light reflected by the reflecting surface (12) reaches the entire surface of the advertisement (6) developed along the corner of the ceiling (3). The lighting device (10) according to [5] , which is installed in a state.

［７］前記ケーシング（１１Ｂ，１１Ｃ）は、前記天井部（３）に沿って形成された長手方向に延びる凹部（３ａ）内に埋設され、該凹部（３ａ）内にて前記ケーシング（１１Ｂ，１１Ｃ）の両側端部（１３，１３）のうち、前記広告（６）に対向する方の一側端部（１３）が少なくとも前記湾曲した形状に成形され、
前記ケーシング（１１Ｂ，１１Ｃ）は前記凹部（３ａ）内にて、前記一側端部（１３）の最外縁（１３ａ）が前記天井部（３）の基準面と同一ないし低い位置に配される一方、反対側の他側端部（１３）の最下部（１３ｂ）が前記基準面と同一ないし高い位置に配されて前記広告照射状態となることを特徴とする［６］に記載の照明装置（１０）。 [7] the casing (11B, 11C), the ceiling portion is embedded in the concave portion (3a) extending in the longitudinal direction and is formed along the (3), said casing at the recess (3a) in ( 11B, 11C) of both side end portions (13, 13), one end portion (13) facing the advertisement (6) is formed into at least the curved shape,
The casing (11B, 11C) is in said concave portion (3a) in the the outermost edge of one side end portion (13) (13a) disposed on the reference surface and the same to a lower position of the ceiling (3) that one, illumination having the constitution [6] to be a the advertisement irradiation state is arranged to a higher position bottom (13b) is not equal to the reference surface of the other side end portion of the opposite side (13) Device (10).

［８］前記ケーシング（１１Ｂ）の上面側に、前記凹部（３ａ）内の設置面に対して当接させると前記広告照射状態をなす取付部（１７）を予め設けたことを特徴とする［７］に記載の照明装置（１０）。 [8] on the upper surface side of the casing (11B), wherein the provided recess (3a) mounting portion forming said advertisement irradiation state and is brought into contact to the installation surface in the (17) in advance The illumination device (10) according to [7] .

［９］前記ケーシング（１１Ｃ）は、前記凹部（３ａ）内に対して前記広告照射状態をなす姿勢を調整可能な取付手段（５０）を介して設置されることを特徴とする［７］に記載の照明装置（１０）。 [9] the casing (11C) is characterized in that it is installed via an adjustable attachment means (50) the attitude constituting the advertisement irradiation state with respect to the said concave portion (3a) [7] The illumination device (10) according to 1.

［１０］前記ケーシング（１１Ｃ）は、一側端部（１３）から他側端部（１３）にかけて弧状に湾曲した断面形状に形成され、
前記凹部（３ａ）内の設置面に前記取付手段（５０）として、前記ケーシング（１１Ｃ）の断面形状と同じ曲率で湾曲した取付面（５２）を備えたブラケット（５１）を配設し、該取付面（５２）の長手方向における所定間隔おきに両側方向に等間隔で並ぶ複数のネジ孔（５３）を設け、
前記ケーシング（１１Ｃ）の長手方向における所定間隔おきに両側方向に等間隔で並ぶ複数の小孔（１８）を前記ネジ孔（５３）に対応させて設け、
前記ケーシング（１１Ｃ）を前記ブラケット（５１）の取付面（５２）に対して所望の前記広告照射状態をなす位置に配置した状態で、当該位置にて互いに合致した前記小孔（１８）と前記ネジ孔（５３）とをネジ止めすることを特徴とする［９］に記載の照明装置（１０）。 [10] The casing (11C) is formed in a cross-sectional shape curved in an arc from one side end (13) to the other side end (13),
As the attachment means (50) to the installation surface in the concave portion (3a), disposed a bracket (51) with said casing mounting surface curved with the same curvature as the cross-sectional shape of (11C) (52), A plurality of screw holes (53) arranged at equal intervals on both sides are provided at predetermined intervals in the longitudinal direction of the mounting surface (52),
A plurality of small holes (18) arranged at equal intervals in both sides at predetermined intervals in the longitudinal direction of the casing (11C) are provided corresponding to the screw holes (53),
In a state where the casing (11C) is arranged at a position where the desired advertisement irradiation state is formed with respect to the mounting surface (52) of the bracket (51), the small hole (18) and the small hole (18) that match each other at the position The lighting device (10) according to [9] , wherein the screw hole (53) is screwed.

次に、前述した解決手段に基づく作用を説明する。
前記［１］に記載の照明装置（１０）によれば、光源（２０）から照射された光は外部に直接漏れることなく、ケーシング（１１Ａ）の反射面（１２）によって一旦反射されてから外部に間接的に照射される。これにより、光源（２０）からのグレアを低減することができ、また、間接照明としての演出効果を高めることができる。 Next, the operation based on the above solution will be described.
According to the illuminating device (10) described in [1], the light emitted from the light source (20) is not directly leaked to the outside, but is once reflected by the reflecting surface (12) of the casing ( 11A). Irradiated externally indirectly. Thereby, the glare from the light source (20) can be reduced, and the effect as indirect illumination can be enhanced.

ケーシング（１１Ａ）には、光源（２０）を外側から覆う状態で保護カバー（３０）が装着されており、光源（２０）から照射された光は保護カバー（３０）を透過する。これにより、光源（２０）の輝度が低減されて過度の強い光の照射を防止することができる。また、光源（２０）の故障の原因となり得る他の物体の接触を防ぎ、光源（２０）を保護することができる。 A protective cover (30) is attached to the casing ( 11A) so as to cover the light source (20) from the outside, and light emitted from the light source (20) passes through the protective cover (30). Thereby, the brightness | luminance of a light source (20) can be reduced and irradiation of an excessive strong light can be prevented. Moreover, the contact of the other object which may cause the failure of the light source (20) can be prevented, and the light source (20) can be protected.

ケーシング（１１Ａ）の湾曲した側端部（１３）の最外縁（１３ａ）は、保護カバー（３０）の最下部に対して下方から上方に回り込むように延出する。これにより、万一火災等が発生した際には保護カバー（３０）の溶融滴下ないし破片は、そのまま下方に直接落下することはなく、必ずケーシング（１１Ａ）の一部によって一旦は受け止められる。 The outermost edge (13a) of the curved side end (13) of the casing ( 11A) extends from the lower side to the upper side with respect to the lowermost part of the protective cover (30). As a result, in the unlikely event of a fire or the like, the molten dripping or debris of the protective cover (30) does not fall directly downward, and is always received once by a part of the casing ( 11A).

しかも、ケーシング（１１Ａ）の湾曲した側端部（１３）の最外縁（１３ａ）には、保護カバー（３０）が溶融滴下した際に該溶融物を下方に漏らさず受け入れる凹溝（４１）を設ける。これにより、保護カバー（３０）は溶融滴下し得る材質として、加工しやすく丈夫で廉価な合成樹脂を採用することができ、また、実際に溶融したとしても凹溝（４１）に受け入れられることで滴下する虞もなく、例えば、鉄道車両用材料等に使用することも可能となる。 Moreover, the outermost edge of the curved side edge of the casing (1 1A) (13) (13a), grooves to receive without leakage The solution fusion product when the protective cover (30) was added dropwise melted down (41 ) . As a result, the protective cover (30) can employ a durable and inexpensive synthetic resin that is easy to process as a material that can be melted and dripped, and even if actually melted, it can be received in the concave groove (41). There is no fear of dripping, and for example, it can be used as a railcar material.

前記［２］に記載の照明装置（１０）によれば、前記ケーシング（１１Ａ）の湾曲した側端部（１３）の最外縁（１３ａ）と前記基板（２１）との間の空間に、前記保護カバー（３０）が溶融滴下した際の溶融物を導き受け入れる。これにより、いっそう確実に保護カバー（３０）の溶融物を受け入れることができ、受け入れた溶融物が外部に漏れる事態も防止することができる。 According to the illuminating device (10) described in [2], in the space between the outermost edge (13a) of the curved side end (13) of the casing (11 A ) and the substrate (21), The protective cover (30) guides and accepts the molten material when melted and dripped. Thereby, the melt of a protective cover (30) can be received more reliably, and the situation where the received melt leaks outside can also be prevented.

以上のような照明装置（１０）の用途としては、例えば前記［３］に記載したように、鉄道車両や航空機、自動車等の客室内（２）の天井部（３）に、前記ケーシング（１１Ａ）をその開口部を下方に向けて埋め込む状態に設置すると良い。これにより、客室内（２）における照明による演出効果を高めることができる。 As an application of the lighting device (10) as described above, for example, as described in [3] above, the casing (1 ) is provided on the ceiling (3) of the passenger cabin (2) of a railway vehicle, an aircraft, an automobile, or the like. 1A) may be installed in a state where the opening is embedded with the opening facing downward. Thereby, the presentation effect by the illumination in a passenger room (2) can be heightened.

ここで、前記［４］に記載したように、前記客室内（２）の天井部（３）の中心線を対称軸として、左右対称の位置関係で一対のケーシング（１１Ａ）を設置すると良い。これにより、客室内（２）の天井部（３）を左右両側からバランスよく広範囲に照明することが可能となる。 Here, as described in [4] above, the pair of casings ( 11A) may be installed in a symmetrical relationship with the center line of the ceiling (3) in the cabin (2) as the axis of symmetry. . Thereby, it becomes possible to illuminate the ceiling part (3) in the cabin (2) over a wide range with good balance from the left and right sides.

さらに、前記［５］に記載の照明装置（１０）によれば、前記ケーシング（１１Ｂ，１１Ｃ）は、客室内（２）の天井部（３）に沿って長手方向に延びると共に、反射面（１２）により反射された光が、前記天井部（３）と壁面部（４）の境目まで照射可能な状態に設置される。これにより、従来のように客室内（２）の座席（５）の領域を照射するだけでなく、天井部（３）と壁面部（４）の境目にも光を照射することができる。 Furthermore, according to the illuminating device (10) described in [5] , the casing (11B, 11C) extends in the longitudinal direction along the ceiling (3) of the cabin (2) and has a reflecting surface ( The light reflected by 12) is installed in a state where it can be irradiated up to the boundary between the ceiling part (3) and the wall surface part (4). Thereby, not only can the area of the seat (5) in the cabin (2) be irradiated as in the prior art, but also light can be irradiated to the boundary between the ceiling (3) and the wall surface (4).

また、前記［６］に記載の照明装置（１０）によれば、前記ケーシング（１１Ｂ，１１Ｃ）は、前記反射面（１２）により反射された光が、前記天井部（３）の隅に沿って展開された広告（６）の全面に到達する広告照射状態に設置される。ここで広告照射状態とは、ケーシング（１１Ｂ，１１Ｃ）内の反射面（１２）により反射された光が天井部（３）の隅に沿った広告（６）の全面に照射されるためのケーシング（１１Ｂ，１１Ｃ）の取り付け向き、角度ないし傾斜等の姿勢を意味する。 Moreover, according to the illuminating device (10) as described in said [6] , as for the said casing (11B, 11C), the light reflected by the said reflective surface (12) follows a corner of the said ceiling part (3). It is installed in an advertisement irradiation state that reaches the entire surface of the advertisement (6) developed in this manner. Here, the advertisement irradiation state is a casing for irradiating the entire surface of the advertisement (6) along the corner of the ceiling (3) with the light reflected by the reflecting surface (12) in the casing (11B, 11C). (11B, 11C) means orientation, angle or inclination.

これにより、従来のように客室内（２）の座席（５）の領域を照射するだけでなく、天井部（３）の隅に沿って、例えば、天井面（天井部（３）の基準面）から壁面部（４）に亘り展開された広告（６）の全面、特に天井面に沿った部分にも光を照射することができる。また、１つの照明装置（１０）によって広告（６）の全面を照射する配光とすることが可能となり、広告（６）には班、影、線等が生じることなく全面に亘り照射され、乗客からは広告（６）がより見やすくなる。 As a result, not only the area of the seat (5) in the cabin (2) is irradiated as in the conventional case, but also, for example, along the corner of the ceiling (3), for example, the ceiling surface (the reference surface of the ceiling (3) ) To the wall surface portion (4), the entire surface of the advertisement (6), in particular, the portion along the ceiling surface can be irradiated with light. In addition, it is possible to make a light distribution that irradiates the entire surface of the advertisement (6) by one lighting device (10), and the advertisement (6) is irradiated over the entire surface without generating a group, a shadow, a line, etc. The advertisement (6) becomes easier to see from the passengers.

具体的には例えば、前記［７］に記載の照明装置（１０）のように、前記ケーシング（１１Ｂ，１Ｃ）は、天井部（３）に沿って形成された長手方向に延びる凹部（３ａ）内に埋設され、該凹部（３ａ）内にて前記ケーシング（１１Ｂ，１１Ｃ）の両側端部（１３，１３）のうち、前記広告（６）に対向する方の一側端部（１３）が少なくとも湾曲した形状に成形される。 Specifically, for example, as in the illumination device (10) according to [7], wherein the casing (11B, 1C) is concave portion extending longitudinally formed along the ceiling (3) (3a ) Embedded in the concave portion (3a), one side end portion (13, 13) of the casing (11B, 11C) facing the advertisement (6) among the side end portions (13, 13) of the casing (11B, 11C). ) At least in a curved shape.

そして、前記ケーシング（１１Ｂ，１１Ｃ）は前記凹部（３ａ）内にて、前記一側端部（１３）の最外縁（１３ａ）が天井部（３）の基準面と同一ないし低い位置に配される一方、反対側の他側端部（１３）の最下部（１３ｂ）が前記基準面と同一ないし高い位置に配されて前記広告照射状態となる。 Then, the casing (11B, 11C) is distribution at the concave portion (3a) within the outermost edge (13a) is the reference plane and the same to a lower position of the ceiling portion (3) of said one end (13) On the other hand, the lowermost part (13b) of the other side end (13) on the opposite side is arranged at the same or higher position as the reference plane, and the advertisement irradiation state is obtained.

すなわち、ケーシング（１１Ｂ，１１Ｃ）の一側端部（１３）からの間接光の照射範囲は一側端部（１３）の最外縁（１３ａ）により規制されるが、この最外縁（１３ａ）は天井面と同一ないし低い位置にあるため、前記広告（６）の全面を照射範囲に収めることができる。しかも、ケーシング（１１Ｂ，１１Ｃ）の他側端部（１３）の最外縁（１３ａ）ではなく最下部（１３ｂ）は、凹部（３ａ）内にて天井面と同一ないし高い位置となるため、この他側端部（１３）によって前記一側端部（１３）からの間接光の照射範囲が遮られることがない。 That is, the irradiation range of the indirect light from the one side end (13) of the casing (11B, 11C) is regulated by the outermost edge (13a) of the one side end (13), but this outermost edge (13a) Since it is in the same or lower position than the ceiling surface, the entire surface of the advertisement (6) can be accommodated in the irradiation range. Moreover, the casing (11B, 11C) the other end of the bottom (13b) instead of outermost (13a) of (13), since to a high position not identical to the ceiling surface at a concave portion (3a) in, The irradiation range of indirect light from the one side end portion (13) is not blocked by the other side end portion (13).

また、前記［８］に記載の照明装置（１０）のように、前記ケーシング（１１Ｂ）の上面側に、前記凹部（３ａ）内の設置面に対して当接させると前記広告照射状態をなす取付部（１７）を予め設けておけば、ケーシング（１１Ｂ）の取り付け時に、その向き、角度ないし傾斜等の姿勢を調整する手間がなく、迅速に取り付けることができる。 Further, the [8] As the illumination apparatus according (10) to the upper surface side of the casing (11B), the advertisement irradiation state and is brought into contact with respect to the installation surface in the concave portion (3a) If the attaching part (17) to be formed is provided in advance, it is possible to quickly attach the casing (11B) without the trouble of adjusting the orientation, angle or inclination of the casing (11B).

あるいは、前記［９］に記載の照明装置（１０）のように、前記ケーシング（１１Ｃ）を、前記凹部（３ａ）内に対して前記広告照射状態をなす姿勢に調整可能な取付手段（５０）を介して設置すれば、広告（６）の実際の展開位置に応じてケーシング（１１Ｃ）を広告照射状態となる姿勢に後から容易に適宜調整することができる。 Alternatively, as described above of the illumination device (10) according to [9], wherein the casing (11C), said concave portion (3a) adjustable mounting means to position constituting the advertisement irradiation state with respect to the (50 ), The casing (11C) can be easily and appropriately adjusted later to the posture in which the advertisement is irradiated according to the actual deployment position of the advertisement (6).

前記取付手段（５０）としては、具体的には例えば前記［１０］に記載のように、前記凹部（３ａ）内の設置面に、前記ケーシング（１１Ｃ）の断面形状と同じ曲率で湾曲した取付面（５２）を備えたブラケット（５１）を配設しておき、このブラケット（５１）に対してケーシング（１１Ｃ）を所望の左右の傾きを持たせた状態で取り付ければ良い。 As the attachment means (50), as described in detail in, for example the [10], the installation surface in the concave portion (3a), curved with the same curvature as the cross sectional shape of the casing (11C) A bracket (51) having an attachment surface (52) is disposed, and the casing (11C) may be attached to the bracket (51) with a desired left and right inclination.

ここで前記ブラケット（５１）の取付面（５２）には、その長手方向における所定間隔おきに両側方向に等間隔で並ぶ複数のネジ孔（５３）を設け、一方の前記ケーシング（１１Ｃ）には、同じく長手方向における所定間隔おきに両側方向に等間隔で並ぶ複数の小孔（１８）を前記ネジ孔（５３）に対応させて設けておく。 Here, the mounting surface (52) of the bracket (51) is provided with a plurality of screw holes (53) arranged at equal intervals in both sides at predetermined intervals in the longitudinal direction, and one casing (11C) is provided in one casing (11C). Similarly, a plurality of small holes (18) arranged at equal intervals in both side directions at predetermined intervals in the longitudinal direction are provided corresponding to the screw holes (53).

このような簡易な構成により、前記ケーシング（１１Ｃ）を前記ブラケット（５１）の取付面（５２）に対して所望の広告照射状態をなす位置に配置した状態で、当該位置にて互いに合致した前記小孔（１８）と前記ネジ孔（５３）とをネジ止めすることにより、容易に所望の広告照射状態に取り付けることが可能となる。 With such a simple configuration, the casing (11C) is arranged at a position where a desired advertisement irradiation state is made with respect to the mounting surface (52) of the bracket (51), and the positions coincide with each other at the position. By screwing the small hole (18) and the screw hole (53), it is possible to easily attach to a desired advertisement irradiation state.

本発明に係る照明装置によれば、大型化や重量増加を招くことなく、限られたスペース内におけるレイアウトやデザインの自由度も向上し、火災等によって保護カバーが溶融した場合に溶融物が外部に漏れ出す虞もなく安全性に優れる。また、天井部と壁面部の境目、例えば客室内の天井部の隅に沿って展開した広告の全面に対しても、十分に光を照射することができる。 According to the lighting device according to the present invention, the degree of freedom of layout and design in a limited space is improved without causing an increase in size and weight, and when the protective cover is melted due to a fire or the like, the melt is externally applied. There is no risk of leaking out and excellent safety. In addition, light can be sufficiently irradiated to the boundary between the ceiling portion and the wall surface portion, for example, the entire surface of the advertisement developed along the corner of the ceiling portion in the cabin.

本発明の第１実施の形態に係る照明装置を鉄道車両の客室内の天井部に取り付けた状態を示す概略断面図である。It is a schematic sectional drawing which shows the state which attached the illuminating device which concerns on 1st Embodiment of this invention to the ceiling part in the passenger room of a rail vehicle. 本発明の第１実施の形態に係る照明装置を示す端面図である。It is an end view which shows the illuminating device which concerns on 1st Embodiment of this invention. 本発明の第１実施の形態に係る照明装置の保護カバーが溶融した際の状態を示す端面図である。It is an end elevation which shows a state when the protective cover of the illuminating device which concerns on 1st Embodiment of this invention fuse | melted. 本発明の第１実施の形態に係る照明装置を示す斜視図である。It is a perspective view which shows the illuminating device which concerns on 1st Embodiment of this invention. 本発明の第１実施の形態に係る照明装置の一端部を示す拡大斜視図である。It is an expansion perspective view which shows the one end part of the illuminating device which concerns on 1st Embodiment of this invention. 本発明の第１実施の形態に係る照明装置を示す正面図である。It is a front view which shows the illuminating device which concerns on 1st Embodiment of this invention. 本発明の第１実施の形態に係る照明装置を示す平面図である。It is a top view which shows the illuminating device which concerns on 1st Embodiment of this invention. 本発明の第１実施の形態に係る照明装置を示す底面図である。It is a bottom view which shows the illuminating device which concerns on 1st Embodiment of this invention. 本発明の第２実施の形態に係る照明装置を示す端面図である。It is an end elevation which shows the illuminating device which concerns on 2nd Embodiment of this invention. 本発明の第２実施の形態に係る照明装置の一端部を示す拡大斜視図である。It is an expansion perspective view which shows the one end part of the illuminating device which concerns on 2nd Embodiment of this invention. 本発明の第２実施の形態に係る照明装置の保護カバーが溶融した際の状態を示す端面図である。It is an end elevation which shows a state when the protective cover of the illuminating device which concerns on 2nd Embodiment of this invention fuse | melted. 本発明の第３実施の形態に係る照明装置を示す端面図である。It is an end elevation which shows the illuminating device which concerns on 3rd Embodiment of this invention. 本発明の第３実施の形態に係る照明装置の照射範囲を示す説明図である。It is explanatory drawing which shows the irradiation range of the illuminating device which concerns on 3rd Embodiment of this invention. 本発明の第４実施の形態に係る照明装置を示す端面図である。It is an end view which shows the illuminating device which concerns on 4th Embodiment of this invention. 本発明の第４実施の形態に係る照明装置の取り付けを説明する端面図である。It is an end view explaining attachment of the illuminating device which concerns on 4th Embodiment of this invention. 本発明の第４実施の形態に係る照明装置のケーシングを示す平面図である。It is a top view which shows the casing of the illuminating device which concerns on 4th Embodiment of this invention.

以下、図面に基づき、本発明を代表する各種実施の形態を説明する。
図１〜図８は、本発明の第１実施の形態を示している。
図１は、鉄道車両の客室内の天井部への照明装置の取付状態を示す概略断面図であり、図２は、照明装置の端面図、図３は、照明装置の保護カバーが溶融した際の端面図である。図４は、照明装置の斜視図であり、図５は、照明装置の一端部の拡大斜視図であり、図６は、照明装置の正面図であり、図７は、照明装置の平面図であり、図８は、照明装置の底面図である。 Hereinafter, various embodiments representing the present invention will be described with reference to the drawings.
1 to 8 show a first embodiment of the present invention.
FIG. 1 is a schematic cross-sectional view showing a mounting state of a lighting device to a ceiling part in a passenger compartment of a railway vehicle, FIG. 2 is an end view of the lighting device, and FIG. 3 is a view when a protective cover of the lighting device is melted FIG. 4 is a perspective view of the lighting device, FIG. 5 is an enlarged perspective view of one end of the lighting device, FIG. 6 is a front view of the lighting device, and FIG. 7 is a plan view of the lighting device. FIG. 8 is a bottom view of the lighting device.

図１において、照明装置１０は、鉄道車両１の客室内２の天井部３に設置されるものであり、本実施の形態では、客室内２にて座席５が並ぶ前後方向に延びるように設置される。本実施の形態における照明装置１０は、客室内２の天井部３の近傍を柔らかく照明するための間接照明をなしている。 In FIG. 1, the lighting device 10 is installed on the ceiling 3 of the passenger cabin 2 of the railway vehicle 1. In this embodiment, the lighting device 10 is installed to extend in the front-rear direction in which the seats 5 are arranged in the passenger cabin 2. Is done. Illumination device 10 in the present embodiment performs indirect illumination for softly illuminating the vicinity of ceiling portion 3 in cabin 2.

照明装置１０は、長手方向に延びる複数のユニットが一列をなすように順次繋がれて、客室内２の天井部３に、ユニットの主要部をなすケーシング１１が、その開口部を下方に向けて埋め込むような状態に設置されている。また、照明装置１０のケーシング１１は、客室内２の天井部３の中心線を対称軸として、左右対称の位置関係で一対に並んで延びるように設置されている。 A plurality of units extending in the longitudinal direction are sequentially connected in a row in the lighting device 10, and a casing 11, which is a main part of the unit, is arranged on the ceiling 3 of the cabin 2 with its opening facing downward. It is installed in an embedded state. Moreover, the casing 11 of the illuminating device 10 is installed so as to extend side by side in a symmetrical relationship with the center line of the ceiling portion 3 in the cabin 2 as the axis of symmetry.

図２に示すように、照明装置１０は、光源２０が取り付けられ、該光源２０から照射された光を受けて間接的に外部を照らす反射面１２を備えたケーシング１１と、前記光源２０を外側から覆う状態で前記ケーシング１１に装着される保護カバー３０とから成る。ここでケーシング１１の一部は、保護カバー３０の全域に対して鉛直方向に重なる位置まで少なくとも延出し、かつ保護カバー３０の最下部３０ａに近接する部分に、保護カバー３０が溶融滴下した際に該溶融物を下方に漏らさず受け入れる溶融物受け部４０が設けられている。 As shown in FIG. 2, the illuminating device 10 includes a casing 11 having a light source 20 attached thereto, a casing 11 having a reflection surface 12 that receives light emitted from the light source 20 and indirectly illuminates the outside, and the light source 20 outside. And a protective cover 30 attached to the casing 11 so as to cover the casing 11. Here, a part of the casing 11 extends at least to a position overlapping with the entire area of the protective cover 30 in the vertical direction, and when the protective cover 30 is melted and dropped on a portion close to the lowermost part 30a of the protective cover 30. melt receiving portion 40 for receiving without leakage the solution fusion product downward.

ケーシング１１は、長尺に延びており下向きに円弧状に湾曲した断面形状であり、その長手方向に平行に延びる両側端部１３，１３は、それぞれ内側に向って下方から上方へと回り込むように湾曲した形状に成形されている。このようなケーシング１１は、アルミニウム等の金属により容易に押出し成形することができるものである。ケーシング１１の内側全体に亘る反射面１２には、光反射効率が高くなる表面処理が施されている。具体的には例えば、白色塗料を塗布したり、あるいは鏡面加工しても良い。 The casing 11 extends in a long shape and has a cross-sectional shape that is curved downward in an arc shape. It is molded into a curved shape. Such a casing 11 can be easily extruded by a metal such as aluminum. The reflection surface 12 over the entire inside of the casing 11 is subjected to a surface treatment that increases the light reflection efficiency. Specifically, for example, a white paint may be applied or mirrored.

光源２０の種類は特に限定されないが、ＬＥＤランプであることが好ましい。ＬＥＤランプは小型であること、低消費電力であること、長寿命であることという利点を有する。本実施の形態では、図２に示すように、細幅状に延びる基板２１上に表面実装型のＬＥＤランプを複数並べて配列させている。ＬＥＤランプの発光色は任意に選択できる。基板２１はその一面が実装面であり、該実装面上にＬＥＤランプが電気的に接続される配線回路が形成されている。 The type of the light source 20 is not particularly limited, but is preferably an LED lamp. LED lamps have the advantages of being small, low power consumption, and long life. In the present embodiment, as shown in FIG. 2, a plurality of surface mount type LED lamps are arranged side by side on a substrate 21 extending in a narrow width. The emission color of the LED lamp can be arbitrarily selected. One surface of the substrate 21 is a mounting surface, and a wiring circuit to which the LED lamp is electrically connected is formed on the mounting surface.

図２に示すように、光源２０を含む基板２１は、ケーシング１１における両側端部１３，１３の湾曲した内側に沿って、該内側の空間を閉じる状態に取り付けられている。詳しくは、側端部１３の湾曲した内側には、互いに対向する一対のレール溝１４，１４が設けられており、各レール溝１４に、基板２１の両側端縁がそれぞれ摺動可能に嵌合するように取り付けられている。 As shown in FIG. 2, the substrate 21 including the light source 20 is attached along the curved inner side of the side end portions 13 and 13 in the casing 11 so as to close the inner space. Specifically, a pair of rail grooves 14 and 14 facing each other are provided on the curved inner side of the side end portion 13, and both side edges of the substrate 21 are slidably fitted in each rail groove 14. It is attached to do.

保護カバー３０は、前記基板２１と同じく細幅状に延びる同形状の平板状に形成されている。保護カバー３０の材質は、アクリル樹脂やＰＣ樹脂等の光透過性材料であれば特に限定されないが、加工の容易性等の理由からガラスではなく合成樹脂であることが好ましい。なお、保護カバー３０は無色透明の他、有色透明であっても良く、また、保護カバー３０に光拡散剤を含有させて、保護カバー３０内で積極的に光を拡散させても良い。 The protective cover 30 is formed in the same shape of a flat plate extending in a narrow width like the substrate 21. The material of the protective cover 30 is not particularly limited as long as it is a light transmissive material such as an acrylic resin or a PC resin, but is preferably a synthetic resin instead of glass for reasons such as ease of processing. The protective cover 30 may be colored and transparent as well as colorless and transparent, and the protective cover 30 may contain a light diffusing agent to actively diffuse light within the protective cover 30.

図２に示すように、保護カバー３０は、ケーシング１１における両側端部１３，１３の湾曲した内側に沿って、前記基板２１を外側から覆う状態に装着されている。詳しくは、側端部１３の湾曲した内側には、前記各レール溝１４の外側に互いに対向する一対のレール溝１５，１５が設けられており、各レール溝１５に、保護カバー３０の両側端縁がそれぞれ摺動可能に嵌合するように取り付けられている。ここで、保護カバー３０は、基板２１上の光源２０と近接しており、基板２１に対して平行に重なる状態に配置される。 As shown in FIG. 2, the protective cover 30 is mounted along the curved inner sides of the side end portions 13 and 13 of the casing 11 so as to cover the substrate 21 from the outside. Specifically, a pair of rail grooves 15, 15 facing each other are provided outside the rail grooves 14 on the curved inner side of the side end portion 13, and the rail grooves 15 are provided at both ends of the protective cover 30. The edges are attached so as to be slidably fitted. Here, the protective cover 30 is close to the light source 20 on the substrate 21, and is disposed in a state of overlapping the substrate 21 in parallel.

ケーシング１１の両側端部１３の最外縁１３ａは、保護カバー３０の最下部３０ａに対して下方から上方に回り込むように延出している。この両側端部１３の最外縁１３ａと基板２１との間の空間が、図３に示すように、保護カバー３０が溶融滴下した際に、該溶融物を下方に漏らさず受け入れる溶融物受け部４０として設定されている。ここで、両側端部１３の最外縁１３ａと基板２１との間の空間は、保護カバー３０の溶融物の体積分に相当する容量を備える深さに設定されている。 The outermost edges 13 a of the side end portions 13 of the casing 11 extend from the lower side to the upper side with respect to the lowermost part 30 a of the protective cover 30. The space between the outermost edge 13a and the substrate 21 of the two side portions 13, as shown in FIG. 3, when the protective cover 30 was added dropwise melt, the melt receiving unit for receiving without leakage of the solution fusion product downward 40 is set. Here, the space between the outermost edge 13 a of the side end portions 13 and the substrate 21 is set to a depth having a capacity corresponding to the volume of the melt of the protective cover 30.

すなわち、側端部１３の湾曲した内側において、上向きに延びる最外縁１３ａの高さ位置は、前述した保護カバー３０の溶融物の体積分に相当する容量を備える深さが得られる程度に設定される。ここで、前記光源２０から照射される光は、保護カバー３０をそのまま透過して、その光軸がケーシング１１の反射面１２の略中心に向うように設定されている。そのため、光源２０から照射された光が反射面１２に向う直接光の照射範囲内では、前記側端部１３の最外縁１３ａにより本来なら反射面１２に向う光の一部が遮られるが、間接照明としての光の利用効率上は特に問題ない程度である。 That is, the height position of the outermost edge 13a that extends upward on the curved inner side of the side end portion 13 is set such that a depth having a capacity corresponding to the volume of the melt of the protective cover 30 is obtained. The Here, the light emitted from the light source 20 passes through the protective cover 30 as it is, and its optical axis is set so as to be directed to the approximate center of the reflecting surface 12 of the casing 11. For this reason, within the direct light irradiation range in which the light emitted from the light source 20 is directed to the reflecting surface 12, the outermost edge 13a of the side end portion 13 blocks a part of the light that is normally directed to the reflecting surface 12, but indirectly. There is no particular problem in terms of light use efficiency as illumination.

次に、第１実施の形態に係る照明装置１０の作用について説明する。
図５〜図８に示すように、本照明装置１０のケーシング１１は、長尺に延びており、その長手方向に平行に延びる両側端部１３，１３が、それぞれ内側に下方から上方に向い湾曲する形状に成形される。 Next, the effect | action of the illuminating device 10 which concerns on 1st Embodiment is demonstrated.
As shown in FIGS. 5-8, the casing 11 of this illuminating device 10 is elongate, and the both side edge parts 13 and 13 extended in parallel with the longitudinal direction are each curved toward the inside upward from the downward direction. To be shaped.

図２に示すように、光源２０を含む基板２１は、ケーシング１１における両側端部１３，１３の湾曲した内側に沿って、該内側の空間を閉じる状態に取り付ける。すなわち、互いに対向する一対のレール溝１４，１４に、基板２１の両側端縁をそれぞれ摺動可能に嵌合させる。 As shown in FIG. 2, the board | substrate 21 containing the light source 20 is attached in the state which closes this inner space along the curved inner side of the both ends 13 and 13 in the casing 11. As shown in FIG. That is, both side edges of the substrate 21 are slidably fitted in a pair of rail grooves 14 and 14 facing each other.

保護カバー３０も、前記基板２１と同様に細幅状に延びるように形成されており、ケーシング１１における両側端部１３，１３の湾曲した内側に沿って、前記基板２１を外側から覆う状態に装着する。すなわち、互いに対向する一対のレール溝１５，１５に、保護カバー３０の両側端縁をそれぞれ摺動可能に嵌合させる。これにより、照明装置１０のユニットが完成する。 The protective cover 30 is also formed so as to extend narrowly like the substrate 21, and is mounted so as to cover the substrate 21 from the outside along the curved inner side of the side end portions 13, 13 in the casing 11. To do. That is, both end edges of the protective cover 30 are slidably fitted into a pair of rail grooves 15, 15 facing each other. Thereby, the unit of the illuminating device 10 is completed.

図１に示すように、本照明装置１０は、鉄道車両１の客室内２の天井部３に、そのケーシング１１をその開口部を下方に向けて埋め込む状態に設置する。ここで照明装置１０は、複数のユニットを順次繋げることにより、所望の長さまで適宜延ばすことができる。これにより、客室内２における照明による演出効果を高めることができる。特に、ケーシング１１の開口した下端面と天井部３の表面とが面一となるように設置することにより、照明装置１０と天井部３の一体感が高まり、デザイン性も向上する。 As shown in FIG. 1, the present lighting device 10 is installed in a ceiling portion 3 in a passenger cabin 2 of a railway vehicle 1 in a state where its casing 11 is embedded with its opening portion facing downward. Here, the lighting device 10 can be appropriately extended to a desired length by sequentially connecting a plurality of units. Thereby, the production effect by the illumination in the cabin 2 can be enhanced. In particular, by installing the lower end surface of the casing 11 and the surface of the ceiling portion 3 so as to be flush with each other, the sense of unity between the lighting device 10 and the ceiling portion 3 is enhanced, and the design is improved.

また、本実施の形態では、鉄道車両１の客室内２の天井部３の中心線を対称軸として、左右対称の位置関係で一対のケーシング１１，１１を設置している。これにより、客室内２の天井部３を左右両側からバランスよく広範囲に照明することが可能となる。なお、左右の照明装置１０をそれぞれ個別に点灯制御するようにしても良い。 Moreover, in this Embodiment, a pair of casings 11 and 11 are installed by the symmetrical positional relationship by making the centerline of the ceiling part 3 of the passenger compartment 2 of the rail vehicle 1 into a symmetrical axis. Thereby, it becomes possible to illuminate the ceiling part 3 of the cabin 2 in a wide range with good balance from the left and right sides. Note that the left and right illumination devices 10 may be individually controlled to be lit.

しかも、本照明装置１０では、光源２０にＬＥＤランプを用いたことにより、所望の明るさを低い電力消費で得られるばかりでなく、装置全体を小型化することができ、軽量化も図られる。また、ユニットの主要部をなすケーシング１１は、アルミニウム等の金属により容易に押出し成形することができ、コスト面でも有利である。 Moreover, in the present lighting device 10, by using an LED lamp as the light source 20, not only desired brightness can be obtained with low power consumption, but also the entire device can be reduced in size and weight can be reduced. Moreover, the casing 11 which forms the main part of the unit can be easily extruded using a metal such as aluminum, which is advantageous in terms of cost.

図２において、光源２０が点灯すると、光源２０から照射された光は外部に直接漏れることなく、ケーシング１１の反射面１２によって一旦反射されてから外部に間接的に照射される。これにより、光源２０からのグレアを低減することができ、また、間接照明としての演出効果を高めることができる。 In FIG. 2, when the light source 20 is turned on, the light emitted from the light source 20 is not directly leaked to the outside but is once reflected by the reflecting surface 12 of the casing 11 and then indirectly irradiated to the outside. Thereby, the glare from the light source 20 can be reduced, and the effect as indirect illumination can be enhanced.

ケーシング１１には、光源２０を外側から覆う状態で保護カバー３０が装着されており、光源２０から照射された光は保護カバー３０を透過する。これにより、光源２０の輝度が低減されて過度の強い光の照射を防止することができると共に、光源２０の故障の原因となり得る他の物体の接触を防ぎ、光源２０を保護することができる。 A protective cover 30 is attached to the casing 11 so as to cover the light source 20 from the outside, and light emitted from the light source 20 passes through the protective cover 30. Thereby, the brightness of the light source 20 can be reduced and irradiation of excessively strong light can be prevented, and contact with other objects that may cause a failure of the light source 20 can be prevented, and the light source 20 can be protected.

また、ケーシング１１の両側端部１３，１３は、保護カバー３０の全域に対して鉛直方向に重なる位置まで少なくとも延出している。これにより、万一火災等が発生した際には保護カバー３０の溶融滴下ないし破片は、そのまま下方の客室内２に直接落下する虞はなく、必ずケーシング１１の両側端部１３，１３によって一旦は受け止められる。 Further, both side end portions 13 of the casing 11 extend at least to a position overlapping with the entire area of the protective cover 30 in the vertical direction. Thus, in the unlikely event of a fire or the like, there is no possibility that the molten dripping or debris of the protective cover 30 will directly fall into the lower cabin 2 as it is. It is accepted.

しかも、ケーシング１１の両側端部１３，１３の最外縁１３ａは、保護カバー３０の最下部３０ａに対して下方から上方に回り込むように延出しており、該両側端部１３，１３の最外縁１３ａと基板２１との間の空間が溶融物受け部４０となっている。すなわち、保護カバー３０が万一溶融したとしても、溶融物受け部４０に溶融物は受け入れられて下方へ滴下する虞はない。 Moreover, the outermost edges 13 a of the side end portions 13, 13 of the casing 11 extend from the lower side to the upper side with respect to the lowermost portion 30 a of the protective cover 30, and the outermost edges 13 a of the side end portions 13, 13. The space between the substrate 21 and the substrate 21 is a melt receiving part 40. That is, even if the protective cover 30 is melted, there is no possibility that the melt is received by the melt receiver 40 and dropped downward.

これにより、保護カバー３０は溶融滴下し得る材質として、加工しやすく丈夫で廉価な合成樹脂を採用することができる。また、保護カバー３０が実際に万一溶融したとしても、溶融物受け部４０に受け入れられることで滴下する虞もなく、例えば、鉄道車両用材料等に使用することも可能となる。なお、溶融物受け部４０は、保護カバー３０全体の溶融物の体積分に相当する容量を備える深さに設定すると良い。 As a result, the protective cover 30 can employ a durable and inexpensive synthetic resin that is easy to process as a material that can be melted and dropped. In addition, even if the protective cover 30 is actually melted, there is no fear of dripping by being received by the melt receiving part 40, and for example, the protective cover 30 can be used as a railcar material. In addition, the melt receiving part 40 is good to set to the depth provided with the capacity | capacitance equivalent to the volume of the melt of the protective cover 30 whole.

なお、一列をなすように繋がれた各ケーシング１１のうち、その長手方向の両端に位置するケーシング１１の端部は、それぞれ他の部材等によって塞がれることになる。よって、ケーシング１１の端部から溶融物がこぼれ落ちる虞はない。他に例えば、各ケーシング１１の長手方向の両端にそれぞれ蓋状の構造体を設けて、ケーシング１１ごとに両端を塞いだり、あるいは一列をなす各ケーシング１１のうち、その長手方向の両端に位置するケーシング１１の端部にのみ予め蓋状の構造体を設けても良い。 Of the casings 11 connected in a row, the end portions of the casings 11 positioned at both ends in the longitudinal direction are respectively closed by other members and the like. Therefore, there is no fear that molten material is falling off from the end portion of the casing 11. In addition, for example, lid-like structures are provided at both ends of each casing 11 in the longitudinal direction, and both ends of each casing 11 are closed, or each casing 11 in a row is positioned at both ends in the longitudinal direction. A lid-like structure may be provided in advance only at the end of the casing 11.

図９〜図１１は、本発明の第２実施の形態を示している。
本実施の形態では、前述した第１実施の形態に係る照明装置１０と基本的な構成は共通するが、溶融物受け部４１の具体的な構成が異なっている。図９は、照明装置の端面図、図１０は、照明装置の一端部の拡大斜視図であり、図１１は、照明装置の保護カバーが溶融した際の端面図である。なお、第１実施の形態と同種の部位には同一符号を付して重複した説明を省略する。 9 to 11 show a second embodiment of the present invention.
In the present embodiment, the basic configuration is the same as that of the lighting device 10 according to the first embodiment described above, but the specific configuration of the melt receiver 41 is different. FIG. 9 is an end view of the lighting device, FIG. 10 is an enlarged perspective view of one end of the lighting device, and FIG. 11 is an end view when the protective cover of the lighting device is melted. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

本実施の形態では、ケーシング１１の両側端部１３，１３の最外縁１３ａに、保護カバー３０の溶融物を導き受け入れる凹溝を形成して、該凹溝を溶融物受け部４１として設定している。これにより、いっそう確実に保護カバー３０の溶融物を受け入れることができ、受け入れた溶融物が外部に漏れる事態も防止することができる。 In the present embodiment, a concave groove that guides and receives the melt of the protective cover 30 is formed in the outermost edge 13a of the side end portions 13 and 13 of the casing 11, and the concave groove is set as the melt receiving portion 41. Yes. Thereby, the melt of the protective cover 30 can be received more reliably, and the situation where the received melt leaks to the outside can also be prevented.

さらに、本実施の形態によれば、凹溝により溶融物を受け入れるため、両側端部１３，１３の最外縁１３ａの高さはなるべく低く抑えることができる。それにより、光源２０から照射された光が反射面１２に向う直接光の照射範囲内で、側端部１３の最外縁１３ａにより本来なら反射面１２に向う光が遮られる面積も小さくなるため、光の利用効率を高めることができる。 Further, according to this embodiment, for receiving the molten material by the groove, the height of the outermost edge 13a of the side edge portions 13, 13 can be suppressed as low as possible. Thereby, within the direct light irradiation range where the light emitted from the light source 20 is directed to the reflecting surface 12, the area where the light toward the reflecting surface 12 is originally blocked by the outermost edge 13a of the side end portion 13 is also reduced. Light utilization efficiency can be increased.

図１２および図１３は、本発明の第３実施の形態を示している。
本実施の形態では、前述した第１実施の形態に係る照明装置１０と基本的な構成は共通するが、ケーシング１１Ｂの上面側の形状と客室内２の天井部３に対する取り付け態様が異なっている。図１２は、照明装置の端面図、図１３は、照明装置の照射範囲を示す説明図である。なお、第１実施の形態と同種の部位には同一符号を付して重複した説明を省略する。 12 and 13 show a third embodiment of the present invention.
In the present embodiment, the basic configuration is the same as that of the lighting device 10 according to the first embodiment described above, but the shape of the upper surface side of the casing 11B and the manner of attachment to the ceiling portion 3 in the cabin 2 are different. . FIG. 12 is an end view of the lighting device, and FIG. 13 is an explanatory diagram showing an irradiation range of the lighting device. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as 1st Embodiment, and the overlapping description is abbreviate | omitted.

本実施の形態では、ケーシング１１Ｂは、客室内２の天井部３に沿って長手方向に延びると共に、反射面１２により反射された光が、天井部と壁面部の境目まで照射可能な状態、より具体的には、天井部３の隅に沿って天井面から壁面部４に亘り展開された広告６の全面（特に天井面に沿った面）に到達する広告照射状態に設置される。図１に示すように、天井部３に沿って、座席５が並ぶ前後方向に延びる一対の凹部３ａ，３ａが形成されている。各凹部３ａは、前述したように天井部３の中心線を対称軸として、左右対称の位置関係で並んでいる。 In the present embodiment, the casing 11B extends in the longitudinal direction along the ceiling portion 3 of the cabin 2 and is capable of irradiating light reflected by the reflecting surface 12 up to the boundary between the ceiling portion and the wall surface portion. Specifically, it is installed in an advertisement irradiation state that reaches the entire surface (especially, the surface along the ceiling surface) of the advertisement 6 developed from the ceiling surface to the wall surface portion 4 along the corner of the ceiling portion 3. As shown in FIG. 1, along the ceiling 3, a pair of concave portions 3a extending in the front-rear direction of the seat 5 aligned, 3a are formed. Each concave portion 3a, the axis of symmetry to the center line of the ceiling portion 3 as described above, are arranged in a positional relationship symmetrical.

図１２に示すように、ケーシング１１Ｂは凹部３ａ内にて、一側端部１３（図中の右側）の最外縁１３ａが天井部３の基準面（天井面）より低い位置に配される一方、反対側の他側端部１３（図中左側）の最下部１３ｂが前記基準面より高い位置に配されて、前記広告照射状態となる。なお、図１２では、光源２０を含む基板２１や保護カバー３０を図示省略し、図１３では、保護カバー３０を図示省略している。 As shown in FIG. 12, in the casing 11B is a concave portion 3a, the outermost edge 13a is disposed at a position lower than the reference surface of the ceiling portion 3 (the ceiling surface) of the one side end portion 13 (right side in the figure) On the other hand, the lowermost part 13b of the other side end 13 (left side in the figure) on the opposite side is arranged at a position higher than the reference plane, and the advertisement irradiation state is obtained. In FIG. 12, the substrate 21 including the light source 20 and the protective cover 30 are not shown, and the protective cover 30 is not shown in FIG.

前記一側端部１３（図中右側）の最外縁１３ａが、天井面以下となる低い位置に配されることで、反射面１２からの間接光の照射範囲は、図１３（ａ）に示すように、広告６のうち特に天井面に沿った面にまで拡がる。しかも、ケーシング１１Ｂの他側端部１３（図中の左側）の最外縁ではなく最下部１３ｂが、凹部３ａ内にて天井面以上となる高い位置に配されるので、この他側端部１３によって前記一側端部１３からの間接光の照射範囲が途中で遮れることがない。 The outermost edge 13a of the one side end portion 13 (right side in the figure) is arranged at a low position below the ceiling surface, so that the irradiation range of indirect light from the reflecting surface 12 is shown in FIG. 13 (a). as described above, the expansion is that up to the surface, which especially along the ceiling surface of the advertising 6. Moreover, since the bottom 13b rather than the outermost edge of the other side end portion 13 of the casing 11B (left side in the drawing), disposed in a high position where the above ceiling surface in the concave portion 3a, the other side end portion 13, the irradiation range of the indirect light from the one side end 13 is not interrupted in the middle.

このような照明装置１０によれば、図１３（ｂ）に示すように、広告６のうち特に天井面に沿った面が照射範囲から外れるようなことはない。すなわち、客室内２の座席５の領域を照射するだけでなく、天井部３の隅に沿って天井面から壁面部４に亘り展開された広告６の全面、特に天井面に沿った部分にも光を照射することができる。また、１つの照明装置１０によって広告６の全面を照射する配光とすることが可能となり、広告６には班、影、線等が生じることなく全面に亘り満遍なく照射され、乗客からは広告６がより見やすくなる。 According to such an illuminating device 10, as shown in FIG.13 (b), especially the surface along the ceiling surface among the advertisements 6 does not deviate from the irradiation range. That is, not only the area of the seat 5 in the cabin 2 is irradiated, but also the entire surface of the advertisement 6 developed from the ceiling surface to the wall surface portion 4 along the corner of the ceiling portion 3, particularly on the portion along the ceiling surface. Light can be irradiated. In addition, it is possible to make a light distribution that irradiates the entire surface of the advertisement 6 by one lighting device 10, and the advertisement 6 is irradiated evenly over the entire surface without generating a group, a shadow, a line, etc., and the advertisement 6 is received from the passengers. Becomes easier to see.

図１に示すように、天井部３には左右対称の位置関係で一対の照明装置１０が２列に配置されているが、進行方向に向って左側に配設される照明装置１０の場合に、図１２および図１３において説明したように、右側の光源２０を天井面の高さより低くなるように配置し、左側の光源２０は従来の位置と同じ高さに配置することになる。また、進行方向に向って右側に配設される照明装置１０の場合は、逆の配置とする。 As shown in FIG. 1, a pair of lighting devices 10 are arranged in two rows on the ceiling portion 3 in a symmetrical relationship, but in the case of the lighting device 10 arranged on the left side in the traveling direction. 12 and 13, the right light source 20 is arranged to be lower than the height of the ceiling surface, and the left light source 20 is arranged at the same height as the conventional position. Moreover, in the case of the illuminating device 10 arrange | positioned at the right side toward the advancing direction, it is set as the reverse arrangement | positioning.

前記ケーシング１１Ｂの上面側には、前記凹部３ａ内の水平な設置面に対して当接させると、自ずと前記広告照射状態をなすための取付部１７が予め設けられている。これにより、取付部１７（の上面）を単に凹部３ａ内の設置面に宛うだけで、所望する前記広告照射状態に設定することが可能となり、ケーシング１１Ｂの取り付け時に、その向き、角度ないし傾斜等の姿勢を調整する手間がなく、迅速に取り付けることができる。なお、図１２においてケーシング１１Ｂの端面には、かかる端面を塞ぐための前述した蓋状の構造体を止める止着部１６が設けられている。 Wherein the upper surface of the casing 11B, when brought into contact with respect to the horizontal installation surface within the concave portion 3a, the mounting portion 17 for naturally make the advertisement irradiation state is provided in advance. Thus, only intends addressed mounting portion 17 (upper surface) of just the installation surface of the concave portion 3a, it is possible to set the advertisement irradiation state desired, during installation of the casing 11B, the orientation, to no angle There is no need to adjust the posture such as inclination, and it can be quickly attached. In FIG. 12, a fastening portion 16 for stopping the above-described lid-like structure for closing the end surface is provided on the end surface of the casing 11B.

なお、前記ケーシング１１Ｂには、前述した第１実施の形態に係る溶融物受け部４０を設けているが、この溶融物受け部４０の代わりに前述した第２実施の形態に係る溶融物受け部４１を設けても良い。また、ケーシング１１Ｂの両側端部１３，１３のうち両側を湾曲させて、それぞれに光源２０を含む基板２１や保護カバー３０、それに溶融物受け部４０を設けた例を説明したが、必ずしも両側に設ける必要はなく片側だけでも足りる。これは前述した第１，２実施の形態についても同様である。 The casing 11B is provided with the melt receiver 40 according to the first embodiment described above, but instead of the melt receiver 40, the melt receiver according to the second embodiment described above. 41 may be provided. Moreover, although the both sides edge part 13 and 13 of the casing 11B were curved, both sides were curved, the board | substrate 21 containing the light source 20, the protective cover 30, and the melt receiving part 40 were provided, respectively. It is not necessary to provide one, and only one side is sufficient. The same applies to the first and second embodiments described above.

図１４〜図１６は、本発明の第４実施の形態を示している。
本実施の形態では、前述した第３実施の形態に係る照明装置１０と基本的な構成は共通するが、ケーシング１１Ｃの上面側の形状と客室内２の天井部３に対する取り付け態様が異なっている。図１４は、照明装置の端面図、図１５は、照明装置の取り付け方を示す端面図、図１６は、照明装置の平面図である。なお、他の実施の形態と同種の部位には同一符号を付して重複した説明を省略する。 14 to 16 show a fourth embodiment of the present invention.
In the present embodiment, the basic configuration is the same as that of the lighting device 10 according to the third embodiment described above, but the shape of the upper surface side of the casing 11C and the manner of attachment to the ceiling portion 3 in the cabin 2 are different. . 14 is an end view of the lighting device, FIG. 15 is an end view showing how to attach the lighting device, and FIG. 16 is a plan view of the lighting device. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as other embodiment, and the overlapping description is abbreviate | omitted.

本実施の形態では、ケーシング１１Ｃは、天井部３の凹部３ａ内に対して前記広告照射状態をなす姿勢を調整可能な取付手段５０を介して設置されている。図１４に示すように、凹部３ａ内の設置面には、取付手段５０として、ケーシング１１Ｃの断面形状と同じ曲率で湾曲した取付面５２を備えたブラケット５１が配設されている。ブラケット５１の取付面５２には、その長手方向における所定間隔おきに両側方向に等間隔で並ぶ複数のネジ孔５３が設けられている。ネジ孔５３にはナット５４が配されている。 In this embodiment, the casing 11C through the adjustable attachment means 50 the attitude constituting the advertisement irradiation state is placed against the concave portion 3a of the ceiling 3. As shown in FIG. 14, the installation surface of the concave portion 3a, as attachment means 50, bracket 51 having a mounting surface 52 that is curved at the same curvature as the cross sectional shape of the casing 11C is arranged. The mounting surface 52 of the bracket 51 is provided with a plurality of screw holes 53 arranged at equal intervals in both sides at predetermined intervals in the longitudinal direction. A nut 54 is disposed in the screw hole 53.

図１６に示すように、ケーシング１１Ｃには、その長手方向における所定間隔おきに両側方向に等間隔で並ぶ複数の小孔１８が、前記ネジ孔５３に対応するように設けられている。図１５に示すように、ケーシング１１Ｃをブラケット５１の取付面５２に対して所望の前記広告照射状態に設置されている。 As shown in FIG. 16, the casing 11 C is provided with a plurality of small holes 18 arranged at equal intervals in both sides at predetermined intervals in the longitudinal direction so as to correspond to the screw holes 53. As shown in FIG. 15, the casing 11 C is installed in a desired advertisement irradiation state with respect to the mounting surface 52 of the bracket 51.

すなわち、進行方向に向って左側に配設される照明装置１０の場合に、一側端部１３（図中の右側）の最外縁１３ａが天井部３の基準面（天井面）より低い位置に配される一方、反対側の他側端部１３（図中左側）の最下部１３ｂが前記基準面より高い位置に配された状態で、当該位置にて互いに合致した小孔１８とネジ孔５３とがネジ止めされている。 That is, in the case of the lighting device 10 disposed on the left side in the traveling direction, the outermost edge 13a of the one side end portion 13 (right side in the drawing) is positioned lower than the reference surface (ceiling surface) of the ceiling portion 3. On the other hand, in a state where the lowermost portion 13b of the other side end portion 13 (left side in the figure) on the opposite side is arranged at a position higher than the reference plane, the small hole 18 and the screw hole 53 that match each other at the position. And are screwed.

ここでケーシング１１Ｃの取付角度は、ケーシング１１Ｃの小孔１８がブラケット５１のネジ孔５３に合致する位置単位で適宜調整することができる。このような簡易な構成により、ケーシング１１Ｃをブラケット５１の取付面５２に対して所望の広告照射状態をなす位置に配置した状態で、当該位置にて互いに合致した小孔１８とネジ孔５３とをネジ止めすることにより、容易に所望の広告照射状態に取り付けることが可能となる。 Here, the mounting angle of the casing 11 C can be appropriately adjusted in units of positions where the small holes 18 of the casing 11 C match the screw holes 53 of the bracket 51. With such a simple configuration, the small hole 18 and the screw hole 53 that match each other at the position are arranged in a state in which the casing 11C is disposed at a position where a desired advertisement irradiation state is formed with respect to the mounting surface 52 of the bracket 51. By screwing, it is possible to easily attach to a desired advertisement irradiation state.

以上、本発明の実施の形態を図面によって説明してきたが、具体的な構成は前述したような実施の形態に限られるものではなく、本発明の要旨を逸脱しない範囲における変更や追加があっても本発明に含まれる。例えば、鉄道車両１の客室内２の天井部３に設置する例を説明したが、航空機や自動車等の他の乗物における客室内の間接照明、あるいは一般家庭用の間接照明として適用しても良い。ここでケーシング１１Ｂ，１１Ｃを、その反射面１２により反射された光が天井部３と壁面部４の境目まで照射可能な状態に設置する場合、天井部３の隅に沿って展開された広告を照射する目的に限定されることはない。 Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to the above-described embodiments, and there are changes and additions within the scope not departing from the gist of the present invention. Are also included in the present invention. For example, although the example which installs in the ceiling part 3 of the passenger compartment 2 of the rail vehicle 1 was demonstrated, you may apply as indirect lighting in a guest room in other vehicles, such as an aircraft and an automobile, or indirect lighting for general homes. . Here, when the casings 11 B and 11 C are installed in a state where the light reflected by the reflecting surface 12 can be irradiated up to the boundary between the ceiling part 3 and the wall surface part 4, advertisements developed along the corners of the ceiling part 3 are displayed. The purpose of irradiation is not limited.

また、ケーシング１１は必ずしも天井部に対して埋め込む状態に設置する必要はなく、天井面にそのまま設置したり、通常の照明器具と同様にソケット等を介して取り付けても構わないことは言うまでもない。また、前記各種実施の形態では、光源２０としてＬＥＤランプを使用した例を説明したが、他に例えば、小型電球等を使用しても良い。また、各照明装置１０を一列に並ぶように直線状に配置したが、他に例えば、天井部３の形状に対応させて緩やかに湾曲して並ぶように配置しても良い。 Moreover, it is not necessary to install the casing 11 in a state of being embedded in the ceiling portion, and it goes without saying that the casing 11 may be installed as it is on the ceiling surface or may be attached via a socket or the like as in a normal lighting fixture. In the various embodiments, the example in which the LED lamp is used as the light source 20 has been described. However, for example, a small light bulb or the like may be used. Moreover, although each illuminating device 10 was arrange | positioned linearly so that it might be located in a line, you may arrange | position so that it may curve gently according to the shape of the ceiling part 3, for example.

さらに、本発明の根幹をなす第１実施の形態の溶融物受け部４０、あるいは第２実施の形態の溶融物受け部４１も、それぞれ図示した形状に限定されるものではない。また、それぞれ別々に構成するだけではなく、１つのケーシング１１に含まれるように組み合わせて構成することもできる。 Furthermore, the melt receiving part 40 of the first embodiment or the melt receiving part 41 of the second embodiment that forms the basis of the present invention is not limited to the illustrated shapes. Moreover, it can also comprise not only separately, but combining so that it may be contained in the one casing 11. FIG.

本発明に係る照明装置は、鉄道車両や航空機、自動車等の客室内の間接照明等に幅広く利用することができる。 The lighting device according to the present invention can be widely used for indirect lighting in passenger rooms of railway vehicles, aircraft, automobiles, and the like.

１…鉄道車両
２…客室内
３…天井部
３ａ…凹部
４…壁面部
５…座席
６…広告
１０…照明装置
１１…ケーシング
１２…反射面
１３…側端部
１４…レール溝
１５…レール溝
１６…止着部
１７…取付部
１８…小孔
２０…光源
２１…基板
３０…保護カバー
４０…溶融物受け部
４１…溶融物受け部
５０…取付手段
５１…ブラケット
５２…取付面
５３…ネジ孔
５４…ナット 1 ... railcar 2 ... room 3 ... ceiling 3a ... concave portion 4 ... wall portion 5 ... seat 6 ... Ad 10 ... illuminating device 11 ... casing 12 ... reflecting surface 13 ... side end portion 14 ... rail groove DESCRIPTION OF SYMBOLS 15 ... Rail groove 16 ... Fastening part 17 ... Mounting part 18 ... Small hole 20 ... Light source 21 ... Substrate 30 ... Protection cover 40 ... Melt receiving part 41 ... Melt receiving part 50 ... Mounting means 51 ... Bracket 52 ... Mounting surface 53 ... Screw hole 54 ... Nut

Claims

An illuminating device comprising a casing having a light source attached thereto and having a reflecting surface that receives light emitted from the light source and indirectly illuminates the outside, and a protective cover attached to the casing so as to cover the light source from the outside In
The casing extends in a long shape, and at least one side end portion of both side end portions extending in parallel with the longitudinal direction thereof is molded into a shape that curves inwardly from below to above,
The light source is provided along a substrate extending in a narrow shape,
The substrate including the light source is attached in a state of closing the inner space along the inside of the curved side end portion of the casing,
The protective cover is formed so as to extend in a narrow width like the substrate, and is mounted in a state of covering the substrate from the outside along the inside of the curved side end portion of the casing,
The outermost edge of the curved side end of the casing extends so as to wrap around from the lower side to the lowermost part of the protective cover, and the protective cover is melted and dripped onto the outermost edge of the side end. An illuminating device characterized in that a concave groove for guiding and receiving a molten material is formed .

2. The lighting device according to claim 1 , wherein a melted material when the protective cover is melted and dropped is guided and received in a space between the outermost edge of the curved side end portion of the casing and the substrate .

The lighting device according to claim 1 or 2 , wherein the casing is installed in a ceiling portion in a guest room in a state in which the opening is embedded with the opening facing downward.

The lighting device according to claim 3 , wherein the pair of casings are installed in a symmetric positional relationship with a center line of a ceiling portion in the cabin as a symmetry axis.

Before SL casing, a feature extends longitudinally along the ceiling of the room, the light reflected by said reflecting surface, to be placed in the irradiation ready to boundary of the ceiling and the wall portion The lighting device according to claim 3 or 4 .

The illumination according to claim 5 , wherein the casing is installed in an advertisement irradiation state in which light reflected by the reflection surface reaches the entire surface of an advertisement developed along a corner of the ceiling portion. apparatus.

The casing, the buried in the recessed portion extending in the longitudinal direction and is formed along the ceiling, of the two side portions of the casing in the recess, one end of the direction which faces the ad Is molded into at least the curved shape,
The casing in the said recess, while the outermost edge of the one side end portion is disposed at a lower position to not equal to the reference plane of the ceiling, the bottom is the reference surface of the other side end opposite The lighting device according to claim 6 , wherein the advertisement irradiation state is set at the same or higher position.

The upper surface side of the casing, lighting device according to claim 7, characterized in that a mounting portion formed the advertisement irradiation state and is brought into contact with respect to the installation surface in the recess in advance.

The casing, lighting device according to claim 7, characterized in that it is installed via an adjustable mounting means posture forming the advertisement irradiation state with respect to the said concave portion.

The casing is formed in a cross-sectional shape curved in an arc from one side end to the other side end,
As the attachment means to the installation surface in the concave portion, arranged a bracket with curved mounting surface with the same curvature as the cross sectional shape of the casing, on both sides direction equal to the predetermined intervals in the longitudinal direction of the mounting surface Provide multiple screw holes lined up at intervals,
A plurality of small holes arranged at equal intervals in both side directions at predetermined intervals in the longitudinal direction of the casing are provided corresponding to the screw holes,
The small hole and the screw hole that match each other at the position are screwed in a state in which the casing is arranged at a position that forms the desired advertisement irradiation state with respect to the mounting surface of the bracket. The lighting device according to claim 9 .