JP2013101901A - Flat lamp device - Google Patents

Flat lamp device Download PDF

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Publication number
JP2013101901A
JP2013101901A JP2012068102A JP2012068102A JP2013101901A JP 2013101901 A JP2013101901 A JP 2013101901A JP 2012068102 A JP2012068102 A JP 2012068102A JP 2012068102 A JP2012068102 A JP 2012068102A JP 2013101901 A JP2013101901 A JP 2013101901A
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Japan
Prior art keywords
light
lamp device
flat
light source
translucent cover
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JP2012068102A
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Japanese (ja)
Inventor
Masahiro Yokota
昌広 横田
Osamu Ono
修 小野
Shusuke Morita
修介 森田
Takeshi Takahashi
高橋　　健
Nobuo Kawamura
信雄 川村
Takeshi Okawa
猛 大川
Hideo Ota
英男 太田
Shuzo Matsuda
秀三 松田
Koji Nishimura
孝司 西村
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Toshiba Corp
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Toshiba Corp
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Priority to JP2012068102A priority Critical patent/JP2013101901A/en
Priority to PCT/JP2012/071326 priority patent/WO2013058014A1/en
Publication of JP2013101901A publication Critical patent/JP2013101901A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]

Abstract

PROBLEM TO BE SOLVED: To provide a flat lamp device that can irradiate from a side face to a back face side.SOLUTION: The flat lamp device includes a flat base material 2, a light source 4 having a light distribution with strong directivity in a normal direction arranged on the base material, and a light-transmitting cover 6 for covering the light source. The light-transmitting cover 6 has a light taking-in part 6a arranged to cover at least a part of an upper surface of the light source, and a light guide emitting part 6b for emitting the taken light to a side face or a back face side of the base material by making the taken light curve and guide from the light source to the outside.

Description

本発明の実施形態は、例えばＧＸ５３形口金を有する扁平型のランプ装置に関する。   The embodiment of the present invention relates to a flat type lamp device having, for example, a GX53 type base.

扁平かつコンパクトなランプ装置として、例えばＧＸ５３形口金を用いた扁平円筒型のランプ装置が知られている。このような扁平型ランプ装置では、扁平なＧＸ５３形口金を用いるとともに、扁平な本体に扁平に光源を配置し、扁平なカバーを組み合わせることで、全体として扁平なランプ装置を実現している。扁平型ランプ装置において、側面あるいは背面側まで照射する用途に対応する技術としては、カバー部材の周縁部をランプ装置の側面側まで延ばし、導光する技術がある。   As a flat and compact lamp device, for example, a flat cylindrical lamp device using a GX53 type base is known. In such a flat lamp device, a flat lamp device is realized as a whole by using a flat GX53 type base, arranging a flat light source on a flat main body, and combining a flat cover. In the flat type lamp device, as a technology corresponding to the application of irradiating the side surface or the back surface side, there is a technology for extending the peripheral edge of the cover member to the side surface side of the lamp device and guiding the light.

特開２００８−１４０６０６号公報JP 2008-140606 A 特開２０１０−１９２３３８号公報JP 2010-192338 A

扁平型ランプ装置では、扁平面の法線方向に強く光を照射し、ランプ装置の側面あるいは背面側には極端に弱い光しか放出することができない。この傾向は、ＬＥＤ光源を用いた場合に特に顕著となる。カバー部材を用いた場合でも、ランプ装置の側面から背面側への照度が弱い。   In the flat lamp device, light is radiated strongly in the normal direction of the flat surface, and only extremely weak light can be emitted to the side surface or the back surface side of the lamp device. This tendency is particularly remarkable when an LED light source is used. Even when the cover member is used, the illuminance from the side surface to the back surface side of the lamp device is weak.

この発明は以上の点を鑑みてなされたもので、その課題は、側面から背面側まで照射することが可能な扁平型ランプ装置を提供することにある。   The present invention has been made in view of the above points. An object of the present invention is to provide a flat type lamp device capable of irradiating from the side surface to the back surface side.

実施形態によれば、扁平型のランプ装置は、扁平な基材と、前記基材上に配置された法線方向への指向性の強い配光を有する光源と、前記光源を覆う透光カバーと、を備え、前記透光カバーは、少なくとも光源の一部の上面を覆うように配置された光取入れ部と、取入れた光を前記光源より外側へ湾曲導光して、前記基材の側面あるいは背面側へ放出する導光放出部と、を有する。   According to the embodiment, the flat type lamp device includes a flat base material, a light source having a light distribution with a strong directivity in a normal direction arranged on the base material, and a translucent cover that covers the light source. The light-transmitting cover is arranged to cover at least a part of the upper surface of the light source, and guides the received light to the outside of the light source so as to be curved to the side surface of the base material. Or it has the light guide discharge | release part discharged | emitted to the back side.

図１ａは、第１の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 1a is a cross-sectional view showing a flat lamp device according to the first embodiment. 図１ｂは、第１の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 1B is a diagram showing a light distribution of the flat lamp device according to the first embodiment. 図２ａは、第２の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 2A is a cross-sectional view showing a flat lamp device according to a second embodiment. 図２ｂは、第２の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 2 b is a diagram showing a light distribution of the flat lamp device according to the second embodiment. 図３ａは、第３の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 3A is a cross-sectional view showing a flat lamp device according to a third embodiment. 図３ｂは、第３の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 3B is a diagram showing a light distribution of the flat lamp device according to the third embodiment. 図４ａは、第４の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 4A is a cross-sectional view showing a flat lamp device according to a fourth embodiment. 図４ｂは、第４の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 4 b is a diagram showing a light distribution of the flat lamp device according to the fourth embodiment. 図５ａは、第５の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 5 a is a cross-sectional view showing a flat lamp device according to a fifth embodiment. 図５ｂは、第５の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 5 b is a diagram showing a light distribution of the flat lamp device according to the fifth embodiment. 図６ａは、第６の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 6A is a cross-sectional view showing a flat lamp device according to a sixth embodiment. 図６ｂは、第６の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 6B is a diagram showing a light distribution of the flat lamp device according to the sixth embodiment. 図７は、第６の実施形態の変形例に係る扁平型ランプ装置を示す断面図。FIG. 7 is a cross-sectional view showing a flat lamp device according to a modification of the sixth embodiment. 図８ａは、第７の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 8a is a cross-sectional view showing a flat lamp device according to a seventh embodiment. 図８ｂは、第７の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 8B is a view showing a light distribution of the flat lamp device according to the seventh embodiment. 図９ａは、第８の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 9A is a cross-sectional view showing a flat lamp device according to an eighth embodiment. 図９ｂは、第８の実施形態に係る扁平型ランプ装置の平面図。FIG. 9B is a plan view of the flat lamp device according to the eighth embodiment. 図１０ａは、第９の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 10A is a cross-sectional view showing a flat lamp device according to a ninth embodiment. 図１０ｂは、第９の実施形態に係る扁平型ランプ装置の基材、基板および光源を示す平面。FIG. 10 b is a plan view showing a base material, a substrate, and a light source of the flat lamp device according to the ninth embodiment. 図１０ｃは、第９の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 10c is a view showing a light distribution of the flat lamp device according to the ninth embodiment. 図１１は、第１０の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 11 is a cross-sectional view illustrating a flat lamp device according to a tenth embodiment. 図１２ａは、第１１の実施形態に係る扁平型ランプ装置を示す断面図。FIG. 12 a is a sectional view showing a flat lamp device according to an eleventh embodiment. 図１２ｂは、第１１の実施形態に係る扁平型ランプ装置の基材、基板および光源を示す平面図。FIG. 12B is a plan view showing a base material, a substrate, and a light source of the flat lamp device according to the eleventh embodiment. 図１２ｃは、第１１の実施形態に係る扁平型ランプ装置の配光分布を示す図。FIG. 12c is a view showing a light distribution of the flat lamp device according to the eleventh embodiment.

以下、図面を参照しながら、種々の実施形態に係る扁平型のランプ装置について詳細に説明する。
（第１の実施形態）
図１ａは、第１の実施形態に係る扁平型ランプ装置１を示す断面図である。扁平型ランプ装置１は、扁平な円筒形状であり、図示した断面を中心軸に対して回転させた形状を有している。 Hereinafter, flat lamp devices according to various embodiments will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1a is a cross-sectional view showing a flat lamp device 1 according to the first embodiment. The flat lamp device 1 has a flat cylindrical shape, and has a shape obtained by rotating the illustrated cross section with respect to a central axis.

扁平型ランプ装置１は、扁平な円盤状の基材２、口金３、光源４を実装した基板５、透光カバー６を備えている。基材２は金属製であり、平坦な前面部２ａおよび前面部の周縁に立設された円筒状の側壁２ｂを有している。基材２は、光源４で発生した熱のヒートシンクであるとともに、図示しない放熱構造より外部に放熱する機能を有している。   The flat lamp device 1 includes a flat disk-shaped base material 2, a base 3, a substrate 5 on which a light source 4 is mounted, and a translucent cover 6. The base material 2 is made of metal and has a flat front surface portion 2a and a cylindrical side wall 2b erected on the periphery of the front surface portion. The substrate 2 is a heat sink for heat generated by the light source 4 and has a function of radiating heat from a heat dissipation structure (not shown).

口金３は、扁平なＧＸ５３形ソケットに適合する段付きの円盤状に形成され、基材２の下面側に埋め込まれている。口金３は、ＧＸ５３形ソケットに適合する複数の端子３ａを有し、内部に駆動回路３ｂを収納している。端子３ａを通して通電され駆動回路３ｂにより発生した駆動電力により、基板５を介して光源４を点灯している。   The base 3 is formed in a stepped disk shape that fits into a flat GX53 type socket, and is embedded in the lower surface side of the substrate 2. The base 3 has a plurality of terminals 3a suitable for the GX53 type socket, and houses a drive circuit 3b therein. The light source 4 is turned on via the substrate 5 by the drive power generated by the drive circuit 3b energized through the terminal 3a.

光源４は、ＬＥＤを用いており、基板５上に実装されている。そして、基板５および光源４は、基材２の前面部２ａのほぼ中心に配置されている。光源４は、基板５の法線方向、すなわち扁平面の法線方向に強い光を照射し、法線方向からの角度をθとするとき、ｃｏｓθに比例して側面方向への光度が弱くなっていく指向性を有している。実施形態では、直径８０ｍｍの基材２に対して、その中央にチップ集約型のＬＥＤを光源４として配置している。   The light source 4 uses an LED and is mounted on the substrate 5. And the board | substrate 5 and the light source 4 are arrange | positioned in the approximate center of the front-surface part 2a of the base material 2. FIG. The light source 4 emits strong light in the normal direction of the substrate 5, that is, the normal direction of the flat surface, and when the angle from the normal direction is θ, the light intensity in the side surface direction is reduced in proportion to cos θ. It has the directivity to go. In the embodiment, a chip-intensive LED is disposed as the light source 4 in the center of the base material 2 having a diameter of 80 mm.

透光カバー６は、ポリカーボネート、アクリル等の透明樹脂により、ほぼ円盤状に形成されている。透光カバー６は、光源４を覆うように、基材２の上部に被せられ、透光カバー６の周縁部が基材２の側壁２ｂ上部に固定されている。透光カバー６の表面は、透けないようにシボが形成されている。   The translucent cover 6 is formed in a substantially disk shape from a transparent resin such as polycarbonate or acrylic. The translucent cover 6 is placed on the upper part of the base material 2 so as to cover the light source 4, and the periphery of the translucent cover 6 is fixed to the upper part of the side wall 2 b of the base material 2. The surface of the translucent cover 6 is formed with wrinkles so as not to be transparent.

透光カバー６は、その中央に光源４に対向する光取入れ部６ａと、この光取入れ部から径方向外方に延出し、光取入れ部の周囲を取り囲む環状の導光放出部６ｂと、導光放出部の端部、すなわち、透光カバー６の外周縁部に位置し基材２に密閉固定された固定部６ｃと、を一体に有している。   The translucent cover 6 has a light intake portion 6a facing the light source 4 at the center thereof, an annular light guide / emission portion 6b extending radially outward from the light intake portion and surrounding the light intake portion, and a light guide cover 6a. An end portion of the light emitting portion, that is, a fixing portion 6 c that is positioned at the outer peripheral edge of the translucent cover 6 and is hermetically fixed to the base material 2 is integrally provided.

光取入れ部６ａは、導光放出部６ｂに光を取り込む略円錐形状の内面と、その中心側に前方に光を取り込む面とで構成され、外面中心部には前方に、取り込まれた光を拡散させる略円錐状の突起部６ｄが設けられている。導光放出部６ｂは、光取入れ部６ａから湾曲して周囲の固定部６ｃまで連なり、全体としてカバーの役割を果たしている。導光放出部６ｂは、光取入れ部６ａから取り込まれた光を外方向に湾曲導光して外部に放出する。導光放出部６ｂの先端は、先細りになるとともに基材２の側壁２ｂ外側に折れ曲がり、基材２の側面から背面側へ光を照射する。   The light intake portion 6a is configured by a substantially conical inner surface that takes light into the light guide / emission portion 6b, and a surface that takes light forward at the center thereof, and the light taken in the front portion at the center of the outer surface. A substantially conical protruding portion 6d to be diffused is provided. The light guide / emission part 6b curves from the light intake part 6a to the surrounding fixing part 6c and plays the role of a cover as a whole. The light guide / emission unit 6b guides the light taken in from the light taking-in unit 6a in a curved direction outward and emits it to the outside. The front end of the light guide / emission part 6b is tapered and bent to the outside of the side wall 2b of the base material 2, and irradiates light from the side surface of the base material 2 to the back side.

このような透光カバー６は、光源４から放出された扁平面の法線方向に指向性の強い光を光取入れ部６ａで透光カバー６内部に取り込み、突起部６ｄと周囲の導光放出部６ｂから側面あるいは背面に向けて照射することができる。また、透光カバー６は、周辺に向かって回転対象に光を放出する。   Such a translucent cover 6 takes light having a strong directivity in the normal direction of the flat surface emitted from the light source 4 into the translucent cover 6 by the light intake 6a, and guides and emits light from the projection 6d and the surroundings. It can irradiate toward the side or back from the part 6b. The translucent cover 6 emits light toward the rotation target toward the periphery.

図１ｂは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、透光カバー６により、側面から背面側にかけてもかなりの光が照射されており、広い配光の扁平型ランプ装置１を実現している。   FIG. 1 b shows the light distribution of the flat lamp device 1. As can be seen from this figure, the translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

なお、透光カバー６の表面処理については、内面に拡散材を塗布あるいは２色成型することで光を取り出すようにしてもよいし、透明材料自体に若干の拡散フィラを入れて透け防止や配光拡大を行ってもよい。   As for the surface treatment of the translucent cover 6, light may be taken out by applying a diffusing material on the inner surface or molding it in two colors, or a slight diffusing filler may be put in the transparent material itself to prevent see-through or distribution. Light expansion may be performed.

次に、他の実施形態に係る照明装置について説明する。後述する他の実施形態において、前述した第１の実施形態と同一の部分には同一の参照符号を付してその詳細な説明を省略する。   Next, a lighting device according to another embodiment will be described. In other embodiments to be described later, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

（第２の実施形態）
図２ａは、第２の実施形態に係る扁平型ランプ装置１を示す断面図である。ランプ装置１の基本的な構成は第１の実施形態と同じであり、透光カバー６の構成が一部相違している。第２の実施形態では、透光カバー６は、突起部６ｄを無くし、外面全体をほぼ平坦に近づけている。ただし、光源４に対向する透光カバー６の中心部分から光が前方に強く漏れるのを抑制するため、導光放出部６ｂの光取入れ部６ａ側の部分が他の部分よりも厚く形成されている。 (Second Embodiment)
FIG. 2 a is a cross-sectional view showing a flat lamp device 1 according to the second embodiment. The basic configuration of the lamp device 1 is the same as that of the first embodiment, and the configuration of the translucent cover 6 is partially different. In the second embodiment, the translucent cover 6 eliminates the protrusion 6d and makes the entire outer surface almost flat. However, in order to prevent light from leaking strongly forward from the central portion of the translucent cover 6 facing the light source 4, the portion of the light guide emitting portion 6 b on the light intake portion 6 a side is formed thicker than the other portions. Yes.

また、導光放出部６ｂの先端に、基材２の側壁２ｂとの密閉固定部６ｃを設けているため、若干背面側への照射が弱くなるが、側面方向へはかなり強く照射させることが可能である。図２ｂは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、透光カバー６により、側面から背面側にかけてもかなりの光が照射されており、広い配光の扁平型ランプ装置１を実現している。   Moreover, since the hermetic fixing part 6c with the side wall 2b of the base material 2 is provided at the front end of the light guide emitting part 6b, the irradiation to the back side is slightly weakened, but the side direction can be irradiated quite strongly. Is possible. FIG. 2 b shows the light distribution of the flat lamp device 1. As can be seen from this figure, the translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

（第３の実施形態）
図３ａは、第３の実施形態に係る扁平型ランプ装置１を示す断面図である。ランプ装置１の基本的な構成は第１の実施形態と同じであり、透光カバー６の構成が一部相違している。第３の実施形態では、透光カバー６の外観を既存の円筒イメージに近づけるべく、導光放出部６ｂの外周側先端をほぼ直角に折曲げ、円筒状の周壁６ｅを形成している。また、基材２は、側壁２ｂを無くした扁平な円盤状に形成されている。透光カバー６は、光源４および基材２の前面部２ａを覆い、周壁６ｅの先端が基材２に固定されている。 (Third embodiment)
FIG. 3a is a cross-sectional view showing a flat lamp device 1 according to a third embodiment. The basic configuration of the lamp device 1 is the same as that of the first embodiment, and the configuration of the translucent cover 6 is partially different. In the third embodiment, in order to make the appearance of the translucent cover 6 close to an existing cylindrical image, the outer peripheral side tip of the light guide emitting part 6b is bent at a substantially right angle to form a cylindrical peripheral wall 6e. Moreover, the base material 2 is formed in the flat disk shape which eliminated the side wall 2b. The translucent cover 6 covers the light source 4 and the front surface portion 2 a of the base material 2, and the tip of the peripheral wall 6 e is fixed to the base material 2.

このように構成された透光カバー６においても、導光放出部６ｂの先端から側面側および背面側へ光を強く照射させることが可能である。図３ｂは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、透光カバー６により、側面から背面側にかけてもかなりの光が照射されており、広い配光の扁平型ランプ装置１を実現している。   Also in the translucent cover 6 configured in this way, it is possible to strongly irradiate light from the front end of the light guide / emission part 6b to the side surface side and the back surface side. FIG. 3 b shows the light distribution of the flat lamp device 1. As can be seen from this figure, the translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

（第４の実施形態）
図４ａは、第４の実施形態に係る扁平型ランプ装置１を示す断面図である。ランプ装置１の基本的な構成は第１の実施形態と同じであり、透光カバー６の構成が一部相違している。第４の実施形態では、透光カバー６を薄くして量産性を向上すべく、光取入れ部６ａの外面側の突起部６ｄを断面で２つ（立体視すると環状に峰が連なる形状の突起部）として、導光放出部６ｂの光取入れ部６ａ側の厚さを薄くしている。透光カバー６の外観を既存の円筒イメージに近づけるべく、導光放出部６ｂの外周側先端をほぼ直角に折曲げ、円筒状の周壁６ｅを形成している。 (Fourth embodiment)
FIG. 4 a is a cross-sectional view showing a flat lamp device 1 according to a fourth embodiment. The basic configuration of the lamp device 1 is the same as that of the first embodiment, and the configuration of the translucent cover 6 is partially different. In the fourth embodiment, in order to improve the mass productivity by reducing the thickness of the translucent cover 6, two protrusions 6d on the outer surface side of the light intake part 6a are shown in cross section (projections having a shape in which ridges are connected in an annular shape when viewed stereoscopically) Part), the thickness of the light guiding / emitting part 6b on the light receiving part 6a side is reduced. In order to make the outer appearance of the translucent cover 6 close to the existing cylindrical image, the outer peripheral end of the light guide / emission part 6b is bent at a substantially right angle to form a cylindrical peripheral wall 6e.

このため、導光放出部６ｂから放出される光量が小さくなり、図４ｂに示すように、配光分布としてはやや前方に偏ったものとなるが、背面側も確実に照射することができている。   For this reason, the amount of light emitted from the light guide emitting part 6b is reduced, and as shown in FIG. 4b, the light distribution is slightly deviated forward, but the back side can also be reliably irradiated. Yes.

（第５の実施形態）
図５ａは、第５の実施形態に係る扁平型ランプ装置１を示す断面図である。第５の実施形態によれば、扁平な円盤状の基材２の前面部２ａ上に基板５が実装され、この基板上に、複数の表面実装型のＬＥＤが基材２と同軸のサークル状に並べて実装され、光源４を構成している。 (Fifth embodiment)
FIG. 5A is a cross-sectional view showing a flat lamp device 1 according to a fifth embodiment. According to the fifth embodiment, the substrate 5 is mounted on the front surface portion 2 a of the flat disk-shaped base material 2, and a plurality of surface-mount LEDs are coaxial with the base material 2 on the substrate. Are arranged side by side to constitute the light source 4.

透光カバー６は、平坦な板状に形成された中央部と、中央部の外周側に形成されて光源４に対向する環状の光取入れ部６ａと、光取入れ部６ａから径方向外方かつ前方へ湾曲して延出する環状の導光放出部６ｂと、を有している。更に透光カバー６は、導光放出部６ｂの中途部から基材２側に延出する筒状の固定部６ｃを有し、この固定部６ｃを介して基材２の前面部２ａに固定されている。   The translucent cover 6 includes a central portion formed in a flat plate shape, an annular light intake portion 6a formed on the outer peripheral side of the central portion and facing the light source 4, and radially outward from the light intake portion 6a. And an annular light guide / emission part 6b that curves forward and extends. Furthermore, the translucent cover 6 has a cylindrical fixing part 6c extending from the middle part of the light guide / emission part 6b to the base material 2 side, and is fixed to the front surface part 2a of the base material 2 via the fixing part 6c. Has been.

上記構成によれば、光源４がサークルの円周に沿って複数分散しているため、個々の光源４を構成する各ＬＥＤの径方向幅が前述の実施形態と比べて大幅に縮小され、透光カバー６の光取入れ部６ａの径方向幅を大幅に縮小することができる。光取入れ部６ａに続く導光放出部６ｂの厚さも薄くすることができ、材料重量や成型性に優れた透光カバー６を実現している。   According to the above configuration, since a plurality of light sources 4 are dispersed along the circumference of the circle, the radial width of each LED constituting each light source 4 is greatly reduced as compared with the above-described embodiment, The radial width of the light intake portion 6a of the light cover 6 can be greatly reduced. The thickness of the light guide / emission part 6b following the light intake part 6a can also be reduced, and the translucent cover 6 excellent in material weight and moldability is realized.

また、光源４が周辺にサークル状に配置しているため、照明装置として組み立てたときのブラケットやシェードが隣接しても、極めてムラが出にくい構成となる。基材２の周縁部に配置された光源４から側面あるいは背面側に光を導光放出するため、透光カバー６の内部を通過する光の伝播距離が短くなり、透光カバー６による光の吸収が低減され効率も向上する。   In addition, since the light sources 4 are arranged in a circle around the periphery, even when brackets or shades are assembled adjacent to each other as a lighting device, it is extremely difficult to cause unevenness. Since light is guided and emitted from the light source 4 arranged at the peripheral edge of the base material 2 to the side or back side, the propagation distance of light passing through the inside of the translucent cover 6 is shortened, and the light transmitted by the translucent cover 6 is reduced. Absorption is reduced and efficiency is improved.

図５ｂは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、透光カバー６により、側面から背面側にかけてもかなりの光が照射されており、広い配光の扁平型ランプ装置１を実現している。   FIG. 5 b shows the light distribution of the flat lamp device 1. As can be seen from this figure, the translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

（第６の実施形態）
図６ａは、第６の実施形態に係る扁平型ランプ装置１を示す断面図である。ランプ装置１の基本的な構成は第５の実施形態と同じであり、透光カバー６の構成が一部相違している。第６の実施形態によれば、透光カバー６は、光源４の内側にも導光放出部６ｂを追加し、内面側に放出される光もランプ装置１の側面側に向くように構成した。 (Sixth embodiment)
FIG. 6A is a cross-sectional view showing a flat lamp device 1 according to a sixth embodiment. The basic configuration of the lamp device 1 is the same as that of the fifth embodiment, and the configuration of the translucent cover 6 is partially different. According to the sixth embodiment, the translucent cover 6 is configured such that the light guide / emission part 6b is also added to the inside of the light source 4 so that the light emitted to the inner surface side also faces the side surface side of the lamp device 1. .

このため、照明装置として組み立てたときのブラケットやシェードがランプ装置１に隣接しても、一層、ムラが出にくくなる。 For this reason, even when a bracket or shade when assembled as a lighting device is adjacent to the lamp device 1, unevenness is further less likely to occur.

図６ｂは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、透光カバー６により、側面から背面側にかけてもかなりの光が照射されており、広い配光の扁平型ランプ装置１を実現している。   FIG. 6 b shows the light distribution of the flat lamp device 1. As can be seen from this figure, the translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

図７は、第６の実施形態の変形例に係る扁平型ランプ装置１を示す断面図である。ここでは、照明装置として組み立てたときのブラケットやシェードが隣接しても、サークル状に配置した光源４の内側が暗くなることをさらに改善するため、基材２に設けられた基板５の中央部にも光源４を設け、更に、透光カバー６の中央にも光源４と対向する中央側の光取入れ部６ａおよび導光放出部６ｂを設けたものである。   FIG. 7 is a cross-sectional view showing a flat lamp device 1 according to a modification of the sixth embodiment. Here, in order to further improve that the inside of the light source 4 arranged in a circle shape becomes dark even when brackets and shades when assembled as a lighting device are adjacent to each other, the central portion of the substrate 5 provided on the base material 2 Further, a light source 4 is provided, and a light receiving portion 6 a and a light guide emitting portion 6 b on the center side facing the light source 4 are also provided in the center of the translucent cover 6.

（第７の実施形態）
図８ａは、第７の実施形態に係る扁平型ランプ装置１を示す断面図である。ランプ装置１の基本的な構成は第５の実施形態と同じであり、透光カバー６の構成が一部相違している。第７の実施形態によれば、透光カバー６は、基材２の中央部と対向する領域、すなわち、光源４の内側の領域、にも導光放出部６ｆを有している。この内側の導光放出部６ｆは、透光カバー６の中央領域で広く面状に発光するように凸凹形状としている。 (Seventh embodiment)
FIG. 8a is a cross-sectional view showing a flat lamp device 1 according to a seventh embodiment. The basic configuration of the lamp device 1 is the same as that of the fifth embodiment, and the configuration of the translucent cover 6 is partially different. According to the seventh embodiment, the translucent cover 6 also has the light guide / emission part 6 f in a region facing the central portion of the substrate 2, that is, a region inside the light source 4. The inner light guide / emission part 6 f has a convex and concave shape so as to emit light in a planar shape in the central region of the translucent cover 6.

図８ｂは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、透光カバー６により、側面から背面側にかけてもかなりの光が照射され、更に、前面中央領域の光照射もあり、広い配光の扁平型ランプ装置１を実現している。   FIG. 8 b shows the light distribution of the flat lamp device 1. As can be seen from this figure, the translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and further irradiates light in the center area of the front surface, realizing a flat lamp device 1 with a wide light distribution. Yes.

（第８の実施形態）
図９ａは、第８の実施形態に係る扁平型ランプ装置１を示す断面図、図９ｂは扁平型ランプ装置の平面図である。本実施形態によれば、透光カバー６の光取入れ部６ａと導光放出部６ｂは、回転対称な形状ではなく、基材２の前面部２ａと平行な線に対して、線対称の形状に形成されている。すなわち、光源４に対向する光取入れ部５と、この光取入れ部から外周側および中心側に延びる２つの導光放出部６ｂと、を有する導光部７が、光源４に合わせて複数並んで設けられている。このように光取入れ部６ａおよび導光放出部６ｂの少なくとも一方は、ここでは、両方は、基材２の中心軸に対して非回転対称な形状を有し、特定の方向に向かって強く光を放出する
このような構成のランプ装置によれば、側面側に強く放出する配光分布であることは前述の実施形態と同様であるが、特に図９ｂで上下方向に強く光を照射するようにしている。これにより、光源４を遮蔽し上下方向に光を照射するような照明器具に適した扁平型ランプ装置１が実現できる。なお、本実施形態では上下方向に特化して配光を強めた例を示したが、強める方向は１つでもよいし、３つ以上でもよい。 (Eighth embodiment)
FIG. 9A is a sectional view showing a flat lamp device 1 according to the eighth embodiment, and FIG. 9B is a plan view of the flat lamp device. According to this embodiment, the light intake part 6a and the light guide / emission part 6b of the translucent cover 6 are not rotationally symmetric, but are symmetrical with respect to a line parallel to the front surface 2a of the substrate 2. Is formed. That is, a plurality of light guides 7 each having a light intake part 5 facing the light source 4 and two light guide emission parts 6 b extending from the light intake part to the outer peripheral side and the center side are arranged in line with the light source 4. Is provided. As described above, at least one of the light intake part 6a and the light guide / emission part 6b here has a non-rotationally symmetric shape with respect to the central axis of the base material 2, and strongly emits light toward a specific direction. According to the lamp device having such a configuration, the light distribution that strongly emits to the side surface is the same as that of the above-described embodiment, but particularly in FIG. I have to. Thereby, the flat type lamp apparatus 1 suitable for the lighting fixture which shields the light source 4 and irradiates light up and down is realizable. In the present embodiment, an example in which the light distribution is strengthened by specializing in the vertical direction has been shown, but the number of strengthening directions may be one, or three or more.

上述した第２ないし第８の実施形態によれば、第１の実施形態と同様に、側面から背面側まで照射することが可能な扁平型ランプ装置を提供することができる。   According to the second to eighth embodiments described above, as in the first embodiment, it is possible to provide a flat lamp device that can irradiate from the side surface to the back surface side.

上述した第２ないし第８の実施形態では、内部が透けるのを防止するため、透光カバー６の表面全体あるいは少なくとも一部にシボ加工を施しているが、シボ加工の代わりに塗装を施してもよいし、乳白部材で２色成型してもよい。また、樹脂材料に若干の拡散フィラを混ぜて薄い乳白としてもよい。また、透光カバーの少なくとも一部の表面に反射部材を接着固定してもよい。   In the above-described second to eighth embodiments, the entire surface or at least a part of the translucent cover 6 is subjected to graining in order to prevent the inside from being seen through. Alternatively, two colors may be molded with a milky white member. Moreover, it is good also as a thin milky white by mixing some diffusion fillers with the resin material. Further, the reflecting member may be bonded and fixed to at least a part of the surface of the translucent cover.

透光カバーからの光取出し構造については、シボや拡散部材の接合で取出し構造を設けてもよいし、透光カバーを構成する材料自体に若干の散乱フィラを混入して散乱させて取り出してもよい。光源の数や種類も特に規定するものではなく、前方に強い指向性のある光源であれば本発明の作用を適用することができる。   As for the light extraction structure from the translucent cover, an extraction structure may be provided by joining a texture or a diffusing member, or the material constituting the translucent cover itself may be mixed with some scattering filler and scattered to be extracted. Good. The number and type of light sources are not particularly specified, and the action of the present invention can be applied to any light source having strong directivity in the front.

（第９の実施形態）
図１０ａは、第９の実施形態に係る扁平型ランプ装置１を示す断面図、図１０ｂは扁平型ランプ装置の基材、基板、光源を示す平面図である。本実施形態によれば、扁平型ランプ装置１は、扁平な円筒形状であり、図示した断面を中心軸に対して回転させた形状を有している。 (Ninth embodiment)
FIG. 10A is a cross-sectional view showing a flat lamp device 1 according to the ninth embodiment, and FIG. 10B is a plan view showing a base material, a substrate, and a light source of the flat lamp device. According to the present embodiment, the flat lamp device 1 has a flat cylindrical shape, and has a shape obtained by rotating the illustrated cross section with respect to the central axis.

扁平型ランプ装置１は、扁平な円盤状の基材２、口金３、光源４を実装した基板５、第１透光カバー６、第２透光カバー８を備えている。基材２は金属製であり、中央下側がくりぬかれた構造であり、上面は平坦な前面部２ａを有している。基材２は、光源４で発生した熱のヒートシンクであるとともに、図示しない放熱構造より外部に放熱する機能を有している。   The flat lamp device 1 includes a flat disk-shaped base material 2, a base 3, a substrate 5 on which a light source 4 is mounted, a first light-transmitting cover 6, and a second light-transmitting cover 8. The base material 2 is made of metal and has a structure in which the lower center side is hollowed out, and the upper surface has a flat front surface portion 2a. The substrate 2 is a heat sink for heat generated by the light source 4 and has a function of radiating heat from a heat dissipation structure (not shown).

口金３は、扁平なＧＸ５３形ソケットに適合する段付きの円盤状に形成され、基材２の下面側に埋め込まれている。口金３は、ＧＸ５３形ソケットに適合する複数の端子３ａを有し、内部に駆動回路３ｂを収納している。端子３ａを通して通電され駆動回路３ｂにより発生した駆動電力により、基板５を介して光源４を点灯する。   The base 3 is formed in a stepped disk shape that fits into a flat GX53 type socket, and is embedded in the lower surface side of the substrate 2. The base 3 has a plurality of terminals 3a suitable for the GX53 type socket, and houses a drive circuit 3b therein. The light source 4 is turned on via the substrate 5 by the drive power generated by the drive circuit 3b energized through the terminal 3a.

図１０ａおよび図１０ｂに示すように、基板５は、中央部が円形にくりぬかれたドーナッツ型をなし、基材２の前面部２ａ上に同軸的に配置されている。光源４は、基板５上に実装され、基板５の外径と内径のほぼ中間部にリング状に複数個、間隔を置いて配置されている。光源４は、基板５の法線方向、すなわち扁平面の法線方向に強い光を照射し、法線方向からの角度をθとするとき、ｃｏｓθに比例して側面方向への光度が弱くなっていく指向性を有している。   As shown in FIGS. 10 a and 10 b, the substrate 5 has a donut shape in which a central portion is hollowed out in a circular shape, and is coaxially disposed on the front surface portion 2 a of the base material 2. A plurality of light sources 4 are mounted on a substrate 5, and a plurality of light sources 4 are arranged in a ring shape at a substantially intermediate portion between the outer diameter and the inner diameter of the substrate 5. The light source 4 emits strong light in the normal direction of the substrate 5, that is, the normal direction of the flat surface, and when the angle from the normal direction is θ, the light intensity in the side surface direction is reduced in proportion to cos θ. It has the directivity to go.

第１透光カバー６は、ポリカーボネートやアクリル等の透明樹脂により、中央部が円形にくりぬかれたドーナッツ状に形成されている。第１透光カバー６は、光源４を覆うように、基材２の上部に被せられ、第１透光カバー６の円筒状の周縁部（固定部）６ｃが基材２上に固定されている。第１透光カバー６の表面は、中が透けて見えないようにシボが形成されている。   The first translucent cover 6 is formed in a donut shape in which a central portion is hollowed out of a transparent resin such as polycarbonate or acrylic. The first translucent cover 6 is placed on the upper part of the base material 2 so as to cover the light source 4, and the cylindrical peripheral edge (fixed part) 6 c of the first translucent cover 6 is fixed on the base material 2. Yes. The surface of the first translucent cover 6 is formed with wrinkles so that the inside cannot be seen through.

第２透光カバー８は、ポリカーボネートやアクリル等の透明樹脂により扁平な円錐台形状に形成されている。第２透光カバー８は、基材２および第１透光カバー６上を覆って設けられ、その外周端面は第１透光カバー６の上端部に超音波溶接等により固定されている。第２透光カバー８の表面は、中が透けて見えないようシボが形成されている。第２透光カバー８は、光源４や基板５などが外部に露出することを防ぐ役目や、外観上のデザイン性を演出する役目などを担っている。   The 2nd translucent cover 8 is formed in the flat truncated cone shape with transparent resins, such as a polycarbonate and an acryl. The second translucent cover 8 is provided so as to cover the base material 2 and the first translucent cover 6, and the outer peripheral end surface thereof is fixed to the upper end portion of the first translucent cover 6 by ultrasonic welding or the like. The surface of the second translucent cover 8 is formed with wrinkles so that the inside cannot be seen through. The second translucent cover 8 plays a role of preventing the light source 4, the substrate 5, and the like from being exposed to the outside, and a role of producing an appearance design.

第１透光カバー６は、光源４に対向する環状の光取入れ部６ａと、この光取入れ部６ａから径方向外方かつ前方へ湾曲して延出する環状の導光放出部６ｂと、導光放出部６ｂの端部、すなわち、第１透光カバー６の周縁部に位置し基材２に密閉固定された固定部６ｃと、を一体に有している。導光放出部６ｂは、光取入れ部６ａから湾曲して周囲の固定部６ｃまで連なっている。導光放出部６ｂは、光取入れ部６ａから取り込まれた光を外方向に湾曲導光して、その端面より側面方向および背面方向に向けて光を放出する。   The first translucent cover 6 includes an annular light receiving portion 6a that faces the light source 4, an annular light guide emitting portion 6b that extends from the light receiving portion 6a in a radially outward direction and is curved forward. An end portion of the light emitting portion 6 b, that is, a fixing portion 6 c that is positioned at the peripheral edge portion of the first light transmitting cover 6 and is hermetically fixed to the base material 2 is integrally provided. The light guide / emission part 6b is curved from the light intake part 6a and continues to the surrounding fixed part 6c. The light guide / emission unit 6b guides the light taken in from the light taking-in unit 6a to bend outward and emits light from the end face toward the side and back.

このような第１透光カバー６は、光源４から放出された扁平面の法線方向に指向性の強い光を光取入れ部６ａで第１透光カバー６内部に取り込み、導光放出部６ｂから側面および背面に向けて照射することができる。また、第１透光カバー６は、周辺に向かって回転対称に光を放出する。   Such a first translucent cover 6 takes in light having a strong directivity in the normal direction of the flat surface emitted from the light source 4 into the first translucent cover 6 by the light intake 6a, and guides and emits the light 6b. It can irradiate from the side towards the side and back. Moreover, the 1st translucent cover 6 discharge | releases light symmetrically toward the periphery.

さらに、上記構成によれば、光源４がサークルの円周に沿って複数分散するため、個々の光源４の径方向幅を小さくでき、第１透光カバー６の光取入れ部６ａの径方向幅を大幅に縮小することができる。これにより、光取入れ部６ａに続く導光放出部６ｂの厚さも薄くすることができ、材料重量や成型性に優れた第１透光カバー６を実現している。   Furthermore, according to the above configuration, since a plurality of light sources 4 are dispersed along the circumference of the circle, the radial width of each light source 4 can be reduced, and the radial width of the light intake portion 6a of the first light transmission cover 6 can be reduced. Can be greatly reduced. Thereby, the thickness of the light guide emission part 6b following the light intake part 6a can also be made thin, and the 1st translucent cover 6 excellent in material weight and moldability is implement | achieved.

また、第１透光カバー６は、基材２の周縁部に配置された光源４から側面あるいは背面側に光を導光放出するため、第１透光カバー６の内部を通過する光の伝播距離が短くなり、第１透光カバー６による光の吸収が低減され効率も向上する。   Further, since the first light-transmitting cover 6 guides and emits light from the light source 4 disposed on the peripheral edge of the base material 2 to the side surface or the back surface, propagation of light passing through the inside of the first light-transmitting cover 6 is performed. The distance is shortened, the light absorption by the first translucent cover 6 is reduced, and the efficiency is improved.

図１０ｃは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、第１透光カバー６により、側面から背面側にかけてもかなりの光が照射され、広い配光の扁平型ランプ装置１を実現している。   FIG. 10 c shows the light distribution of the flat lamp device 1. As can be seen from this figure, the first translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

なお、第１透光カバー６および第２透光カバー８の表面処理については、内面に拡散材を塗布あるいは２色成型することで光を取り出すようにしてもよいし、透明材料自体に若干の拡散フィラを入れて透け防止や配光拡大を行ってもよい。   In addition, about the surface treatment of the 1st translucent cover 6 and the 2nd translucent cover 8, you may make it take out light by apply | coating a diffusing material to an inner surface, or carrying out 2 color molding, or a little in transparent material itself. A diffusion filler may be inserted to prevent see-through and expand light distribution.

（第１０の実施形態）
図１１は、第１０の実施形態に係る扁平型ランプ装置１を示す断面図である。ランプ装置１の基本的な構成は第９の実施形態と同じであり、光源４、基板５および第１透光カバー６が第９の実施形態に比べて、径方向に一回り小さい形状に形成されている。また、第２透光カバー８の構成が第９の実施形態と一部相違している。第１０の実施形態では、第２透光カバー８は、第１透光カバー６の上面だけでなく、第１透光カバー６の周縁部（固定部６ｃ）も覆い、すなわち、第１透光カバー６の全面を覆う形状に形成されている。そして、第２透光カバー８は、その外周底面部を介して基材２上端部に固定されている。
上記構成によれば、光源４から放出された扁平面の法線方向に指向性の強い光を光取入れ部６ａで第１透光カバー６内部に取り込み、導光放出部６ｂから側面および背面に向けて照射することができるため、第９の実施形態とほぼ同様な配光分布を得ることができる。更に、本実施形態によれば、全面を一様な第１透光カバーで覆うことにより、ランプ装置の外観上のデザイン性が大幅に向上すること、第２透光カバー８を基材２に直接、固定しているため、取り付け構造や取り付けプロセスが簡易になるなどの利点がある。 (Tenth embodiment)
FIG. 11 is a cross-sectional view illustrating a flat lamp device 1 according to the tenth embodiment. The basic configuration of the lamp device 1 is the same as that of the ninth embodiment, and the light source 4, the substrate 5, and the first light transmission cover 6 are formed in a shape that is slightly smaller in the radial direction than the ninth embodiment. Has been. Further, the configuration of the second translucent cover 8 is partially different from that of the ninth embodiment. In the tenth embodiment, the second translucent cover 8 covers not only the upper surface of the first translucent cover 6 but also the peripheral portion (fixed portion 6c) of the first translucent cover 6, that is, the first translucent cover. The cover 6 is formed to cover the entire surface. And the 2nd translucent cover 8 is being fixed to the base material 2 upper end part via the outer peripheral bottom face part.
According to the above configuration, light having strong directivity in the normal direction of the flat surface emitted from the light source 4 is taken into the first light-transmitting cover 6 by the light intake portion 6a, and from the light guide / release portion 6b to the side surface and the back surface. Since it can irradiate toward, it can obtain the light distribution substantially similar to 9th Embodiment. Furthermore, according to this embodiment, the design of the appearance of the lamp device is greatly improved by covering the entire surface with the uniform first light-transmitting cover, and the second light-transmitting cover 8 is used as the base material 2. Since it is directly fixed, there is an advantage that the mounting structure and the mounting process are simplified.

（第１１の実施形態）
図１２ａは、第１１の実施形態に係る扁平型ランプ装置１を示す断面図、図１２ｂは、基材２、光源４および基板５を示す平面図である。ランプ装置１の基本的な構成は、第９の実施形態と同じであり、光源４、基板５および第１透光カバー６の構成が、第９の実施形態と一部相違している。第１１の実施形態によれば、チップ集約型のＬＥＤを光源４として用い、基板５および光源４はほぼ真円状を成し、基材２のほぼ中心に光源４が配置されている。 (Eleventh embodiment)
FIG. 12 a is a cross-sectional view showing the flat lamp device 1 according to the eleventh embodiment, and FIG. 12 b is a plan view showing the base material 2, the light source 4 and the substrate 5. The basic configuration of the lamp device 1 is the same as that of the ninth embodiment, and the configurations of the light source 4, the substrate 5, and the first light transmission cover 6 are partially different from those of the ninth embodiment. According to the eleventh embodiment, a chip-intensive LED is used as the light source 4, the substrate 5 and the light source 4 are formed in a substantially circular shape, and the light source 4 is disposed substantially at the center of the substrate 2.

第１透光カバー６は、その中央に光源４に対向する光取入れ部６ａと、この光取入れ部から径方向外方に延出し、光取入れ部６ａの周囲を取り囲む環状の導光放出部６ｂと、導光放出部の端部、すなわち、透光カバー６の外周縁部に位置し基材２に密閉固定された固定部６ｃと、を一体に有している。   The first light-transmitting cover 6 has a light intake portion 6a facing the light source 4 at the center thereof, and an annular light guide / emission portion 6b extending radially outward from the light intake portion and surrounding the light intake portion 6a. And an end portion of the light guide emitting portion, that is, a fixing portion 6 c that is positioned at the outer peripheral edge portion of the translucent cover 6 and is hermetically fixed to the base material 2.

光取入れ部６ａには、導光放出部６ｂに光を取り込む略円錐形状の内面が形成されている。導光放出部６ｂは、光取入れ部６ａから取り込まれた光を外方向に湾曲導光して、その端面より側面方向および背面方向に向けて光を放出する。   The light intake part 6a has a substantially conical inner surface that takes light into the light guide / emission part 6b. The light guide / emission unit 6b guides the light taken in from the light taking-in unit 6a to bend outward and emits light from the end face toward the side and back.

このような第１透光カバー６は、光源４から放出された法線方向に指向性の強い光を光取入れ部６ａで第１透光カバー６内部に取り込み、導光放出部６ｂから側面および背面に向けて照射することができる。また、第１透光カバー６は、周辺に向かって回転対称に光を放出する。   Such a first translucent cover 6 takes in light having a strong directivity in the normal direction emitted from the light source 4 into the first translucent cover 6 by the light intake section 6a, and from the light guide emission section 6b to the side surface and It can irradiate towards the back. Moreover, the 1st translucent cover 6 discharge | releases light symmetrically toward the periphery.

第２透光カバー８は、透明樹脂により扁平な円錐台形状に形成されている。第２透光カバー８は第１透光カバー６上を覆って設けられ、その外周端面は第１透光カバー６の外周部上端に超音波溶接等により固定されている。第２透光カバー８の表面は、中が透けて見えないようシボが形成されている。第２透光カバー８は、光源４や基板５などが外部に露出することを防ぐ役目や、外観上のデザイン性を演出する役目などを担っている。   The 2nd translucent cover 8 is formed in the flat truncated cone shape with transparent resin. The second translucent cover 8 is provided so as to cover the first translucent cover 6, and the outer peripheral end surface thereof is fixed to the upper end of the outer peripheral portion of the first translucent cover 6 by ultrasonic welding or the like. The surface of the second translucent cover 8 is formed with wrinkles so that the inside cannot be seen through. The second translucent cover 8 plays a role of preventing the light source 4, the substrate 5, and the like from being exposed to the outside, and a role of producing an appearance design.

図１２ｃは、扁平型ランプ装置１の配光分布を示している。この図から分かるように、第１透光カバー６により、側面から背面側にかけてもかなりの光が照射されており、広い配光の扁平型ランプ装置１を実現している。   FIG. 12 c shows the light distribution of the flat lamp device 1. As can be seen from this figure, the first translucent cover 6 irradiates a considerable amount of light from the side surface to the back side, and realizes a flat lamp device 1 having a wide light distribution.

本実施形態によれば、第２透光カバー８上の輝度分布が前述の第９および第１０の実施形態の配光分布とは異なるという特徴を持つ。すなわち、第９および第１０の実施形態では光源４の配置がサークル状であるため、第２透光カバー８上には高輝度部がドーナッツ状となる輝度分布が形成されるが、本実施形態では、光源４が中央部に配置されているため、透光カバー８上には中央が高輝度部となる輝度分布が形成される。   According to the present embodiment, the luminance distribution on the second light transmitting cover 8 is different from the light distributions of the ninth and tenth embodiments described above. That is, in the ninth and tenth embodiments, since the light source 4 is arranged in a circle shape, a luminance distribution in which the high luminance portion is donut-shaped is formed on the second light-transmitting cover 8. Then, since the light source 4 is disposed at the center portion, a luminance distribution is formed on the translucent cover 8 so that the center is a high luminance portion.

上述した第９ないし第１１の実施形態においても、第１の実施形態と同様に、側面から背面側まで照射することが可能な扁平型ランプ装置を提供することができる。   Also in the ninth to eleventh embodiments described above, a flat lamp device capable of irradiating from the side surface to the back surface side can be provided, as in the first embodiment.

本発明は上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。また、上記実施形態に開示されている複数の構成要素の適宜な組み合わせにより、種々の発明を形成できる。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。さらに、異なる実施形態にわたる構成要素を適宜組み合わせてもよい。
実施形態では、内部が透けるのを防止するため、第１透光カバー６および第２透光カバー８の表面全体あるいは少なくとも一部にシボ加工を施しているが、シボ加工の代わりに塗装を施してもよいし、乳白部材で２色成型してもよい。また、樹脂材料に若干の拡散フィラを混ぜて薄い乳白としてもよい。透光カバーの少なくとも一部の表面に反射部材を接着固定してもよい。また、それらの面上にローレット加工を施してもよい。 The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.
In the embodiment, in order to prevent the inside from being transparent, the entire surface or at least a part of the first light-transmitting cover 6 and the second light-transmitting cover 8 is subjected to a textured process. Alternatively, two-color molding may be performed using a milky white member. Moreover, it is good also as a thin milky white by mixing some diffusion fillers with the resin material. The reflecting member may be bonded and fixed to at least a part of the surface of the light transmitting cover. Moreover, you may give a knurling process on those surfaces.

第１透光カバー６および第２透光カバー８の光取出し構造については、シボや拡散部材の接合で取出し構造を設けてもよいし、それらを構成する材料自体に若干の散乱フィラを混入して散乱させてもよいし、それらの面上にローレット加工を施し、取り出してもよい。光源の数や種類は、特に実施形態に限定されるものではなく、ＬＥＤに限らず、前方に強い指向性のある光源であれば本発明の作用を適用することができる。   About the light extraction structure of the 1st translucent cover 6 and the 2nd translucent cover 8, you may provide an extraction structure by joining of a wrinkle or a diffusion member, and some scattering fillers are mixed in the material itself which comprises them. The surface may be scattered or knurled on those surfaces and taken out. The number and type of the light sources are not particularly limited to the embodiment, and are not limited to LEDs, and the action of the present invention can be applied to any light source having strong directivity in the front.

１…扁平型ランプ装置、２…基材、２ａ…前面部、３…口金、４…光源、
６…透光カバー、６ａ…光取入れ部、６ｂ、６ｆ…導光放出部、６ｃ…固定部、
８…第２透孔カバー DESCRIPTION OF SYMBOLS 1 ... Flat type lamp apparatus, 2 ... Base material, 2a ... Front part, 3 ... Base, 4 ... Light source,
6 ... translucent cover, 6a ... light intake part, 6b, 6f ... light guide emitting part, 6c ... fixing part,
8 ... Second through hole cover

Claims (19)

扁平な基材と、
前記基材上に配置された法線方向への指向性の強い配光を有する光源と、
前記光源を覆う透光カバーと、を備え、
前記透光カバーは、少なくとも光源の一部の上面を覆うように配置された光取入れ部と、取入れた光を前記光源より外側へ湾曲導光して、前記基材の側面あるいは背面側へ放出する導光放出部と、を有する扁平型ランプ装置。 A flat substrate,
A light source having a light distribution with a strong directivity in the normal direction arranged on the substrate;
A translucent cover that covers the light source,
The translucent cover includes at least a light receiving portion disposed so as to cover the upper surface of a part of the light source, and guides the received light to the outside from the light source and emits the light to the side surface or the back surface side of the substrate. And a light guide emitting part. 前記基材は、平坦な前面部を有し、前記光源が前記前面部の中央部に設けられ、
前記透光カバーは、前記光源に対向する前記光取入れ部と、この光取入れ部の周囲に位置する前記導光放出部と、を有し、主に前記導光放出部の外周部から側面側あるいは背面側へ光を放出する請求項１記載の扁平型ランプ装置。 The base material has a flat front surface portion, and the light source is provided in a central portion of the front surface portion,
The translucent cover includes the light intake portion facing the light source, and the light guide / release portion positioned around the light intake portion, and mainly from the outer peripheral portion of the light guide / release portion to the side surface side Or the flat type lamp device of Claim 1 which discharge | releases light to a back side. 前記透光カバーの光取入れ部は、前記透光カバーの外面側に突出する少なくとも１つの突起部を有する請求項１又は２に記載の扁平型ランプ装置。   3. The flat lamp device according to claim 1, wherein the light intake portion of the translucent cover has at least one protrusion that protrudes toward an outer surface of the translucent cover. 前記基材は、平坦な前面部を有し、前記光源が前記前面部の周縁部に複数並んで設けられ、前記透光カバーは、前記光源の少なくとも一部に対向する前記光取入れ部と、この光取入れ部から取入れた光を前記光源より外側に湾曲導光して先端部分から側面側あるいは背面側へ光を放出する前記導光放出部と、を有する請求項１に記載の扁平型ランプ装置。   The base material has a flat front surface portion, and a plurality of the light sources are provided side by side on a peripheral edge portion of the front surface portion, and the light-transmitting cover has the light intake portion facing at least a part of the light source, 2. The flat lamp according to claim 1, further comprising: a light guide / emission unit configured to guide light emitted from the light intake unit to be curved outward from the light source and emit light from a front end portion to a side surface or a rear surface side. apparatus. 前記透光カバーは、前記光源から取入れた光を、前記基材の中央領域に湾曲導光して放出する他の導光放出部を有している請求項４に記載の扁平型ランプ装置。   The flat lamp device according to claim 4, wherein the translucent cover includes another light guide / emission unit that guides and emits light taken from the light source in a curved direction to the central region of the base material. 前記透光カバーは、前記基材の中心軸に対して回転対称な形状を有し、周辺に向かって回転対象に光を放出する請求項１ないし５のいずれか１項に記載の扁平型ランプ装置。   The flat lamp according to any one of claims 1 to 5, wherein the translucent cover has a shape that is rotationally symmetric with respect to a central axis of the base material, and emits light toward a rotation target toward the periphery. apparatus. 前記透光カバーの光取入れ部および導光放出部の少なくとも一方は、前記基材の中心軸に対して非回転対称な形状を有し、特定の方向に向かって強く光を放出する請求項１ないし５のいずれか１項に記載の扁平型ランプ装置。   2. At least one of the light intake part and the light guide / emission part of the translucent cover has a non-rotationally symmetric shape with respect to the central axis of the substrate, and emits light strongly in a specific direction. 6. The flat lamp device according to any one of items 5 to 5. 前記光取入れ部あるいは導光放出部のいずれかは、前記基材の前面部と平行な線に対して線対称形状であり、対向する２方向に向かって強く光を放出する請求項７に記載の扁平型ランプ装置。   8. The light intake part or the light guide / emission part has a line-symmetric shape with respect to a line parallel to the front surface part of the base material, and emits light strongly in two opposing directions. Flat type lamp device. 前記透光カバーは、少なくとも一部の表面にシボが形成されている請求項１ないし８のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to any one of claims 1 to 8, wherein the translucent cover has at least part of a surface formed with a texture. 前記透光カバーは、少なくとも一部の表面に塗装あるいは反射部材が接着されている請求項１ないし８のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to any one of claims 1 to 8, wherein the translucent cover has a coating or a reflecting member bonded to at least a part of its surface. 前記透光カバーは、少なくとも一部に散乱フィラを含有している請求項１ないし８のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to claim 1, wherein the translucent cover includes a scattering filler at least in part. 扁平な基材と、
前記基材上に配置され、法線方向への指向性の強い配光を有する光源と、
前記光源を覆う第１透光カバーと、
前記第１透光カバーの少なくとも一部を覆う第２透光カバーと、を備え、
前記第１透光カバーは、少なくとも前記光源の一部の上面を覆うように配置された光取入れ部と、取入れた光を前記光源より外側へ湾曲導光して、前記基材の側面あるいは背面側へ放出する導光放出部と、を有する扁平型ランプ装置。 A flat substrate,
A light source disposed on the substrate and having a light distribution with a strong directivity in the normal direction;
A first translucent cover covering the light source;
A second light transmissive cover covering at least a part of the first light transmissive cover,
The first translucent cover includes at least a light receiving portion disposed so as to cover an upper surface of a part of the light source, and guides the received light to the outside from the light source so as to be side or back of the base material. A flat lamp device having a light guide emitting part that emits to the side. 前記基材は、平坦な前面部を有し、前記光源が前記前面部の中央部に設けられ、前記第１透光カバーは、前記光源に対向する前記光取入れ部と、この光取入れ部の周囲に位置する前記導光放出部と、を有し、主に前記導光放出部の外周部から側面側あるいは背面側へ光を放出する請求項１２に記載の扁平型ランプ装置。   The base material has a flat front surface portion, the light source is provided in a central portion of the front surface portion, the first light transmission cover includes the light intake portion facing the light source, and the light intake portion. The flat lamp device according to claim 12, further comprising: a light guide / emission part positioned around, wherein light is emitted mainly from an outer peripheral part of the light guide / emission part toward a side surface or a back side. 前記基材は、平坦な前面部を有し、前記光源が前記前面部の周縁部に複数並んで設けられ、前記第１透光カバーは、前記光源の少なくとも一部に対向する前記光取入れ部と、この光取入れ部から取入れた光を前記光源より外側に湾曲導光して外周部から側面側あるいは背面側へ光を放出する前記導光放出部と、を有する請求項１２に記載の扁平型ランプ装置。   The base material has a flat front surface portion, a plurality of the light sources are provided side by side on a peripheral edge portion of the front surface portion, and the first light-transmitting cover is at least a part of the light source. And the light guide / emission part that guides the light taken in from the light intake part to the outside of the light source and emits the light from the outer peripheral part to the side or back side. Type lamp device. 前記第１透光カバーは、前記基材の中心軸に対して回転対称な形状を有し、周辺に向かって回転対称に光を放出する請求項１２ないし１４のいずれか１項に記載の扁平型ランプ装置。   The flatness according to any one of claims 12 to 14, wherein the first translucent cover has a rotationally symmetric shape with respect to a central axis of the substrate, and emits light in a rotationally symmetric manner toward the periphery. Type lamp device. 前記第１透光カバーもしくは前記第２透光カバーの少なくとも一部の表面にシボが形成されている請求項１２ないし１５のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to any one of claims 12 to 15, wherein a texture is formed on at least a part of a surface of the first light-transmitting cover or the second light-transmitting cover. 前記第１透光カバーもしくは前記第２透光カバーの少なくとも一部の表面に塗装あるいは反射部材が接着されている請求項１２ないし１５のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to any one of claims 12 to 15, wherein a coating or a reflecting member is bonded to at least a part of a surface of the first light-transmitting cover or the second light-transmitting cover. 前記第１透光カバーもしくは前記第２透光カバーの少なくとも一部に散乱フィラを含有している請求項１２ないし１５のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to any one of claims 12 to 15, wherein a scattering filler is contained in at least a part of the first light-transmitting cover or the second light-transmitting cover. 前記第１透光カバーもしくは前記第２透光カバーの少なくとも一部にローレット加工が施されている請求項１２ないし１５のいずれか１項に記載の扁平型ランプ装置。   The flat lamp device according to any one of claims 12 to 15, wherein at least a part of the first light-transmitting cover or the second light-transmitting cover is knurled.
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