JP5673136B2 - light source - Google Patents

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JP5673136B2
JP5673136B2 JP2011012592A JP2011012592A JP5673136B2 JP 5673136 B2 JP5673136 B2 JP 5673136B2 JP 2011012592 A JP2011012592 A JP 2011012592A JP 2011012592 A JP2011012592 A JP 2011012592A JP 5673136 B2 JP5673136 B2 JP 5673136B2
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housing
light source
light
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light emitting
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JP2012155926A (en
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岳 笹室
岳 笹室
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Nichia Corp
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Nichia Corp
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/005—Preliminary treatment of ores, e.g. by roasting or by the Krupp-Renn process

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

本発明は、光源に関し、特に、筐体を用いた光源に関する。   The present invention relates to a light source, and more particularly to a light source using a housing.

従来、筐体を用いた光源を小型化かつ高出力化するために、筐体の底面や側面に複数のＬＥＤを配置する発明が提案された（特許文献１、２参照）。   Conventionally, in order to reduce the size and increase the output of a light source using a housing, there has been proposed an invention in which a plurality of LEDs are arranged on the bottom and side surfaces of the housing (see Patent Documents 1 and 2).

特開２００７−３２９０５３号公報JP 2007-329053 A 特表２００８−５３６２６６号公報Special table 2008-536266 gazette

しかしながら、上記従来の光源では、筺体の側面に対して垂直に出射した発光装置の光が、対向する側面に取り付けられた発光装置に入射してしまい、その一部が筺体の外部に透過して光源の出力向上が妨げられるという問題があった。   However, in the conventional light source described above, the light emitted from the light emitting device perpendicular to the side surface of the housing is incident on the light emitting device attached to the opposite side surface, and part of the light is transmitted outside the housing. There was a problem that the output improvement of the light source was hindered.

そこで、本発明は、筺体の側面に対して垂直に出射した発光装置の光が、対向する側面に取り付けられた発光装置に入射しない光源を提供することを目的とする。   Therefore, an object of the present invention is to provide a light source in which light of a light emitting device emitted perpendicularly to a side surface of a housing does not enter a light emitting device attached to the opposite side surface.

本発明によれば、上記課題は、次の手段により解決される。   According to the present invention, the above problem is solved by the following means.

本発明は、筐体に複数の発光装置を取り付け、前記発光装置から出射する光を前記筺体の出射面から出射させる光源であって、前記筐体の側面は、前記出射面の垂線に対してテーパー状であって、前記複数の発光装置が取り付けられる第１面と、前記第１面から前記筺体の出射面側に向けて続く、前記出射面の垂線に対してテーパー状の第２面と、を有し、前記第１面の垂線が前記第１面に対向する第２面と交差する、ことを特徴とする光源である。   The present invention is a light source in which a plurality of light emitting devices are attached to a housing, and light emitted from the light emitting devices is emitted from an emission surface of the housing, and a side surface of the housing is perpendicular to the emission surface A first surface to which the plurality of light emitting devices are attached, and a second surface tapered from the first surface toward the exit surface side of the housing, the taper shape being perpendicular to the exit surface; , And the perpendicular of the first surface intersects the second surface facing the first surface.

また、本発明は、前記筺体の出射面の外周は、前記筺体の底面の外周よりも長い、ことを特徴とする上記の光源である。   Moreover, this invention is said light source characterized by the outer periphery of the output surface of the said housing being longer than the outer periphery of the bottom face of the said housing.

また、本発明は、前記出射面の垂線に対する前記第１面のテーパー角は、前記出射面の垂線に対する前記第２面のテーパー角よりも大きい、ことを特徴とする上記の光源である。   In addition, the present invention provides the light source as described above, wherein a taper angle of the first surface with respect to the normal of the emission surface is larger than a taper angle of the second surface with respect to the normal of the emission surface.

また、本発明は、前記筺体は、多面体の光学ガラスである、ことを特徴とする上記の光源である。   Moreover, this invention is said light source characterized by the said casing being polyhedral optical glass.

また、本発明は、前記第１面の垂線と前記第１面に対向する第２面の垂線とにより形成される角度は、前記第２面の臨界角より大きい、ことを特徴とする上記の光源である。   In the present invention, the angle formed by the perpendicular of the first surface and the perpendicular of the second surface facing the first surface is larger than the critical angle of the second surface. Light source.

また、本発明は、前記筺体は、側面に反射材が取り付けられた中空のライトパイプである、ことを特徴とする上記の光源である。   Moreover, this invention is said light source characterized by the said housing | casing being a hollow light pipe with which the reflecting material was attached to the side surface.

また、本発明は、前記発光装置は、前記筺体の側面と底面とに取り付けられている、ことを特徴とする上記の光源である。   Moreover, this invention is said light source characterized by the said light-emitting device being attached to the side surface and bottom face of the said housing.

本発明によれば、筺体の側面に対して垂直に出射した発光装置の光が、対向する側面に取り付けられた発光装置に入射しない光源を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the light source which the light of the light-emitting device radiate | emitted perpendicularly | vertically with respect to the side surface of a housing can provide the light source which does not inject into the light-emitting device attached to the opposite side surface.

本発明の実施形態に係る光源の概略斜視図である。It is a schematic perspective view of the light source which concerns on embodiment of this invention. 本発明の実施形態に係る光源の概略断面（図１中のＪ−Ｊ断面）を示す図である。It is a figure which shows the schematic cross section (JJ cross section in FIG. 1) of the light source which concerns on embodiment of this invention. 光源の概略断面を様々な形態について示す図である。It is a figure which shows the schematic cross section of a light source about various forms.

以下に、添付した図面を参照しつつ、本発明を実施するための形態について説明する。   EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated, referring attached drawing.

図１は、本発明の実施形態に係る光源の概略斜視図である。   FIG. 1 is a schematic perspective view of a light source according to an embodiment of the present invention.

図１に示すように、本発明の実施形態に係る光源１は、筐体１０に複数の発光装置２０を取り付けた光源である。以下、順に説明する。   As shown in FIG. 1, the light source 1 according to the embodiment of the present invention is a light source in which a plurality of light emitting devices 20 are attached to a housing 10. Hereinafter, it demonstrates in order.

（筺体）
筺体１０としては、例えば、多面体の光学ガラスや、発光装置２０が取り付けられていない側面上の領域にミラーなどの反射材を取り付けた中空のライトパイプなど、を用いることができる。 (Body)
As the housing 10, for example, polyhedral optical glass, a hollow light pipe in which a reflective material such as a mirror is attached to a region on a side surface where the light emitting device 20 is not attached, or the like can be used.

筺体１０は、本発明の実施形態では六面体として構成されており、底面１１、出射面１２、上側面１３、下側面１４、右側面１５、及び左側面１６を有しており、出射面１２の外周は、底面１１の外周よりも長い。ただし、出射面１２、下側面１４、及び左側面１６は、図１に現れていない。   The housing 10 is configured as a hexahedron in the embodiment of the present invention, and has a bottom surface 11, an exit surface 12, an upper side surface 13, a lower side surface 14, a right side surface 15, and a left side surface 16. The outer periphery is longer than the outer periphery of the bottom surface 11. However, the emission surface 12, the lower side surface 14, and the left side surface 16 do not appear in FIG.

筐体１０の側面は、出射面１２の垂線に対してテーパー状であって、複数の発光装置２０が取り付けられる第１面（１３ａ、１４ａ、１５ａ、１６ａ）と、第１面から筺体１０の出射面側に向けて続く、出射面１２の垂線に対してテーパー状の第２面（１３ｂ、１４ｂ、１５ｂ、１６ｂ）と、を有する。ただし、下側面１４が有する第１面１４ａ及び第２面１４ｂ、及び左側面１６が有する第１面１６ａ及び第２面１６ｂは、図１に現れていない。   The side surface of the housing 10 is tapered with respect to the normal of the emission surface 12, and includes a first surface (13 a, 14 a, 15 a, 16 a) to which the plurality of light emitting devices 20 are attached, and the housing 10 from the first surface. And a second surface (13b, 14b, 15b, 16b) having a taper shape with respect to the normal of the emission surface 12, which continues toward the emission surface side. However, the first surface 14a and the second surface 14b of the lower side surface 14 and the first surface 16a and the second surface 16b of the left side surface 16 do not appear in FIG.

筐体１０が多面体の光学ガラスである場合においては、第１面（１３ａ、１４ａ、１５ａ、１６ａ）の垂線と、第１面（１３ａ、１４ａ、１５ａ、１６ａ）に対向する第２面（１３ｂ、１４ｂ、１５ｂ、１６ｂ）の垂線と、によって形成される角度が、第２面（１３ｂ、１４ｂ、１５ｂ、１６ｂ）の臨界角より大きくなるようにすることが好ましい。これにより、第１面（１３ａ、１４ａ、１５ａ、１６ａ）に取り付けられた発光装置２０からの光が第２面（１３ｂ、１４ｂ、１５ｂ、１６ｂ）で全反射される。   In the case where the housing 10 is a polyhedral optical glass, the perpendicular of the first surface (13a, 14a, 15a, 16a) and the second surface (13b) facing the first surface (13a, 14a, 15a, 16a). , 14b, 15b, 16b) and the perpendicular formed by the second surface (13b, 14b, 15b, 16b) is preferably larger than the critical angle. Thereby, the light from the light emitting device 20 attached to the first surface (13a, 14a, 15a, 16a) is totally reflected by the second surface (13b, 14b, 15b, 16b).

なお、本発明の実施形態では第１面（１３ａ、１４ａ、１５ａ、１６ａ）を平面とするが、第１面（１３ａ、１４ａ、１５ａ、１６ａ）は、曲面とすることもできる。この場合、曲面の曲率半径は、「９０」とすることが好ましい。   In the embodiment of the present invention, the first surface (13a, 14a, 15a, 16a) is a flat surface, but the first surface (13a, 14a, 15a, 16a) may be a curved surface. In this case, the radius of curvature of the curved surface is preferably “90”.

筺体１０は、底面１１と第１面（１３ａ、１４ａ、１５ａ、１６ａ）との間に、出射面１２の垂線に対して第１面（１３ａ、１４ａ、１５ａ、１６ａ）とは異なるテーパー角（０度を含む）を有する１つ以上の面を有していてもよい。また、筺体１０は、第２面（１３ｂ、１４ｂ、１５ｂ、１６ｂ）と出射面１２との間に、出射面１２の垂線に対して第２面（１３ｂ、１４ｂ、１５ｂ、１６ｂ）とは異なるテーパー角（０度を含む）を有する１つ以上の面を有していてもよい。   The housing 10 has a taper angle (a taper angle different from that of the first surface (13a, 14a, 15a, 16a) between the bottom surface 11 and the first surface (13a, 14a, 15a, 16a) with respect to the perpendicular of the emission surface 12. May have one or more faces having 0 degrees). Further, the casing 10 is different from the second surface (13b, 14b, 15b, 16b) with respect to the perpendicular of the emission surface 12 between the second surface (13b, 14b, 15b, 16b) and the emission surface 12. One or more surfaces having a taper angle (including 0 degrees) may be included.

（発光装置）
発光装置２０としては、例えば、発光ダイオード（ＬＥＤ）やレーザダイオード（ＬＤ）などを用いることができる。発光装置２０から出射する光は、筺体１０の内部で多重反射され、筺体１０の出射面１２から出射する。 (Light emitting device)
For example, a light emitting diode (LED) or a laser diode (LD) can be used as the light emitting device 20. The light emitted from the light emitting device 20 is multiple-reflected inside the housing 10 and is emitted from the exit surface 12 of the housing 10.

発光装置２０は、筺体１０の上側面１３、下側面１４、右側面１５、及び左側面１６に取り付けられるが、本発明の実施形態に係る光源１においては、これらの側面に加えて、筺体１０の底面１１にも発光装置２０を取り付け、光源１の出力向上を図っている。   The light emitting device 20 is attached to the upper side surface 13, the lower side surface 14, the right side surface 15, and the left side surface 16 of the housing 10. In the light source 1 according to the embodiment of the present invention, the housing 10 is added to these side surfaces. A light emitting device 20 is also attached to the bottom surface 11 of the light source 11 to improve the output of the light source 1.

次に、筺体１０の上側面１３と下側面１４とを取り上げて、本発明の実施形態に係る光源１についてより詳細に説明する。   Next, taking up the upper side surface 13 and the lower side surface 14 of the housing 10, the light source 1 according to the embodiment of the present invention will be described in more detail.

図２は、本発明の実施形態に係る光源の概略断面（図１中のＪ−Ｊ断面）を示す図である。   FIG. 2 is a diagram showing a schematic cross section (a JJ cross section in FIG. 1) of the light source according to the embodiment of the present invention.

図２に示すように、本発明の実施形態においては、筺体１０の下側面１４（上側面１３）が有する第１面１４ａ（第１面１３ａ）の垂線が、この第１面１４ａ（第１面１３ａ）に対向する第２面１３ｂ（第２面１４ｂ）と交差する。   As shown in FIG. 2, in the embodiment of the present invention, the perpendicular to the first surface 14a (first surface 13a) of the lower side surface 14 (upper side surface 13) of the housing 10 is the first surface 14a (first surface). It intersects the second surface 13b (second surface 14b) facing the surface 13a).

しかるところ、第２面１３ｂ（第２面１４ｂ）には発光装置２０が取り付けられていない。   However, the light emitting device 20 is not attached to the second surface 13b (second surface 14b).

したがって、本発明の実施形態に係る光源１によれば、筺体１０の側面に対して垂直に出射した発光装置２０の光が、対向する側面に取り付けられた発光装置２０に入射しないようになる。   Therefore, according to the light source 1 which concerns on embodiment of this invention, the light of the light-emitting device 20 radiate | emitted perpendicularly | vertically with respect to the side surface of the housing 10 will not enter into the light-emitting device 20 attached to the opposing side surface.

なお、筺体１０の下側面１４（上側面１３）が有する第１面１４ａ（第１面１３ａ）から引いたすべての垂線を、この第１面１４ａ（第１面１３ａ）に対向する第２面１３ｂ（第１面１４ｂ）に交差させれば、筺体１０の側面に対して垂直に出射したすべて発光装置２０の光が、対向する側面に取り付けられた発光装置２０に入射しないようになり、好ましい。   In addition, the 2nd surface which opposes all the perpendiculars drawn from the 1st surface 14a (1st surface 13a) which the lower surface 14 (upper surface 13) which the housing 10 has has this 1st surface 14a (1st surface 13a). If it crosses 13b (1st surface 14b), it will become that the light of all the light-emitting devices 20 radiate | emitted perpendicularly | vertically with respect to the side surface of the housing 10 will not inject into the light-emitting device 20 attached to the opposite side surface, and is preferable. .

次に、図３を参照しつつ、本発明の実施形態に係る光源についてさらに詳細に説明する。   Next, the light source according to the embodiment of the present invention will be described in more detail with reference to FIG.

図３は、光源の概略断面を様々な場合について示す図である。   FIG. 3 is a diagram showing a schematic cross section of a light source in various cases.

図３中、
（ａ）は、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが出射面１２の垂線に対する第２面１４ｂ（第２面１３ｂ）のテーパー角βに等しい場合の概略断面を示す図であり、
（ｂ）は、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａよりも小さい場合の概略断面を示す図であり、
（ｃ）は、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａに等しい場合の概略断面を示す図であり、
（ｄ）は、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａよりも大きい場合の概略断面を示す図であり、
（ｅ）は、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが９０度に等しい場合の概略断面を示す図である。 In FIG.
(A) shows a case where the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is equal to the taper angle β of the second surface 14b (second surface 13b) with respect to the normal of the emission surface 12. It is a figure showing a schematic cross section,
(B) is a diagram showing a schematic cross section when the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is smaller than the boundary value A;
(C) is a diagram showing a schematic cross section when the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is equal to the boundary value A;
(D) is a diagram showing a schematic cross section when the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is larger than the boundary value A;
(E) is a figure which shows a schematic cross section in case taper angle (alpha) of the 1st surface 14a (1st surface 13a) with respect to the perpendicular of the output surface 12 is equal to 90 degree | times.

（図３（ａ）：出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが出射面１２の垂線に対する第２面１４ｂ（第２面１３ｂ）のテーパー角βに等しい場合）
この場合、第１面１４ａ（第１面１３ａ）が存在しなくなり、発光装置が筺体１０の底面１１にのみ取り付けられることとなるため、筺体１０に取り付ける発光装置の数が少なくなる。 (FIG. 3A): the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is equal to the taper angle β of the second surface 14b (second surface 13b) with respect to the normal of the emission surface 12. If)
In this case, the first surface 14a (first surface 13a) does not exist, and the light emitting device is attached only to the bottom surface 11 of the housing 10, so that the number of light emitting devices attached to the housing 10 is reduced.

（図３（ｂ）：出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａよりも小さい場合）
この場合、筺体１０の下側面１４（上側面１３）が第１面１４ａ（第１面１３ａ）を有するようになり、筺体１０の下側面１４（上側面１３）が有する第１面１４ａ（第１面１３ａ）の垂線が、この第１面１４ａ（第１面１３ａ）に対向する第２面１３ｂ（第２面１４ｂ）と交差するようになる。 (FIG. 3B: When the taper angle α of the first surface 14 a (first surface 13 a) with respect to the normal of the emission surface 12 is smaller than the boundary value A)
In this case, the lower side surface 14 (upper side surface 13) of the casing 10 has a first surface 14a (first surface 13a), and the first surface 14a (first side) of the lower side surface 14 (upper side surface 13) of the casing 10 is provided. The perpendicular of the first surface 13a intersects the second surface 13b (second surface 14b) facing the first surface 14a (first surface 13a).

したがって、このようにすれば、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが出射面１２の垂線に対する第２面１４ｂ（第２面１３ｂ）のテーパー角βに等しい場合よりも、筺体１０の側面に対して垂直に出射した発光装置２０の光を、対向する側面に取り付けられた発光装置２０に入射しないようにすることができる。   Therefore, in this case, the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 becomes the taper angle β of the second surface 14b (second surface 13b) with respect to the normal of the emission surface 12. The light of the light emitting device 20 emitted perpendicularly to the side surface of the housing 10 can be prevented from entering the light emitting device 20 attached to the opposite side surface, as compared with the case where they are equal.

（図３（ｃ）：出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａに等しい場合）
この場合、筺体１０の下側面１４（上側面１３）が有する第１面１４ａ（第１面１３ａ）から引いたすべての垂線が、この第１面１４ａ（第１面１３ａ）に対向する第２面１３ｂ（第２面１４ｂ）と交差する。 (FIG. 3C: When the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is equal to the boundary value A)
In this case, all perpendicular lines drawn from the first surface 14a (first surface 13a) of the lower side surface 14 (upper side surface 13) of the housing 10 are opposed to the first surface 14a (first surface 13a). It intersects the surface 13b (second surface 14b).

したがって、このようにすれば、筺体１０の側面に対して垂直に出射した発光装置２０の光の全部を、対向する側面に取り付けられた発光装置２０に入射しないようにすることができる。   Therefore, in this way, it is possible to prevent all light of the light emitting device 20 emitted perpendicularly to the side surface of the housing 10 from entering the light emitting device 20 attached to the opposite side surface.

（図３（ｄ）：出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａよりも大きい場合）
この場合、筺体１０の下側面１４（上側面１３）が有する第１面１４ａ（第１面１３ａ）から引いたすべての垂線が、この第１面１４ａ（第１面１３ａ）に対向する第２面１３ｂ（第２面１４ｂ）と交差する。 (FIG. 3D: When the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is larger than the boundary value A)
In this case, all perpendicular lines drawn from the first surface 14a (first surface 13a) of the lower side surface 14 (upper side surface 13) of the housing 10 are opposed to the first surface 14a (first surface 13a). It intersects the surface 13b (second surface 14b).

したがって、このようにすれば、筺体１０の側面に対して垂直に出射した発光装置２０の光の全部を、対向する側面に取り付けられた発光装置２０に入射しないようにすることができる。   Therefore, in this way, it is possible to prevent all light of the light emitting device 20 emitted perpendicularly to the side surface of the housing 10 from entering the light emitting device 20 attached to the opposite side surface.

（図３（ｅ）：出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが９０度に等しい場合）
この場合、第１面１４ａ（第１面１３ａ）が筺体１０の底面１１に対して平行になるため、一方の第１面１４ａ（第１面１３ａ）に対して垂直に出射した発光装置２０の光は、その全部が、他方の第１面１３ａ（第１面１４ａ）に取り付けられた発光装置２０に入射しない。 (FIG. 3E): When the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is equal to 90 degrees
In this case, since the first surface 14a (first surface 13a) is parallel to the bottom surface 11 of the housing 10, the light emitting device 20 that emits light perpendicularly to the first surface 14a (first surface 13a). All of the light does not enter the light emitting device 20 attached to the other first surface 13a (first surface 14a).

ただし、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａに等しい場合（図３（ｃ）参照）や出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角αが境界値Ａよりも大きい場合（図３（ｄ）参照）よりも、第１面１４ａ（第１面１３ａ）に取り付けることができる発光装置２０の数が少なくなる。   However, when the taper angle α of the first surface 14a (first surface 13a) with respect to the normal of the emission surface 12 is equal to the boundary value A (see FIG. 3C), the first surface 14a with respect to the normal of the emission surface 12 (first The number of light emitting devices 20 that can be attached to the first surface 14a (first surface 13a) is smaller than when the taper angle α of the first surface 13a) is larger than the boundary value A (see FIG. 3D). .

以上、筺体１０の上側面１３と下側面１４とを取り上げて説明したが、筺体１０の右側面１５と左側面１６とについても同様に考えることができる。   As described above, the upper side surface 13 and the lower side surface 14 of the housing 10 are taken up and described, but the right side surface 15 and the left side surface 16 of the housing 10 can be considered in the same manner.

したがって、本発明の実施形態において、出射面１２の垂線に対する第１面１３ａ、１４ａ、１５ａ、１６ａのテーパー角αは、次式で示す関係を満たす。

Figure 0005673136
ここで、βは、出射面１２の垂線に対する第２面１３ｂ、１４ｂ、１５ｂ、１６ｂのテーパー角であり、Ａは、出射面１２の垂線に対する第１面１３ａ、１４ａ、１５ａ、１６ａのテーパー角の境界値である。 Therefore, in the embodiment of the present invention, the taper angle α of the first surfaces 13a, 14a, 15a, and 16a with respect to the normal of the emission surface 12 satisfies the relationship expressed by the following equation.
Figure 0005673136
 Here, β is the taper angle of the second surfaces 13b, 14b, 15b, and 16b with respect to the normal of the emission surface 12, and A is the taper angle of the first surfaces 13a, 14a, 15a, and 16a with respect to the normal of the emission surface 12. Is the boundary value of.

本発明の実施形態では、筺体１０の下側面１４（上側面１３）が有する第１面１４ａ（第１面１３ａ）の底面側の端部から引いた第１面１４ａ（第１面１３ａ）の垂線が、この第１面１４ａ（第１面１３ａ）に対向する第２面１３ｂ（第２面１４ｂ）の底面側の端部と交差する場合における、出射面１２の垂線に対する第１面１４ａ（第１面１３ａ）のテーパー角が、境界値Ａとなる。   In the embodiment of the present invention, the first surface 14a (first surface 13a) drawn from the bottom surface side end portion of the first surface 14a (first surface 13a) of the lower surface 14 (upper surface 13) of the housing 10 is provided. The first surface 14a (with respect to the normal of the emission surface 12) when the perpendicular intersects the bottom surface side end of the second surface 13b (second surface 14b) facing the first surface 14a (first surface 13a). The taper angle of the first surface 13a) is the boundary value A.

図３（ｃ）と図３（ｄ）との比較からも明らかなように、出射面１２の垂線に対するテーパー角αが境界値Ａに等しい場合の第１面は、筺体１０の側面に対して垂直に出射した発光装置２０の光の全部を、対向する側面に取り付けられた発光装置２０に入射しないようにする第１面の中でも、取り付け可能な発光装置２０を最大にする面であり、好ましい。   As is clear from a comparison between FIG. 3C and FIG. 3D, the first surface when the taper angle α with respect to the normal of the emission surface 12 is equal to the boundary value A is relative to the side surface of the housing 10. Among the first surfaces that prevent all the light of the light emitting device 20 emitted vertically from entering the light emitting device 20 attached to the opposite side surface, this is the surface that maximizes the attachable light emitting device 20 and is preferable. .

なお、上記した本発明の実施形態とは異なり、第１面のテーパー角αを第２面のテーパー角βより小さくすることも可能である。   Unlike the above-described embodiment of the present invention, the taper angle α of the first surface can be made smaller than the taper angle β of the second surface.

以上、本発明の実施形態について説明したが、これらの説明は、本発明の一例に関するものであり、本発明は、これらの説明によって何ら限定されるものではない。   As mentioned above, although embodiment of this invention was described, these description is related with an example of this invention, and this invention is not limited at all by these description.

１ 光源
１０ 筺体
１１ 底面
１２ 出射面
１３ 上側面
１３ａ 第１面
１３ｂ 第２面
１４ 下側面
１４ａ 第１面
１４ｂ 第２面
１５ 右側面
１５ａ 第１面
１５ｂ 第２面
１６ 左側面
１６ａ 第１面
１６ｂ 第２面
２０ 発光装置 DESCRIPTION OF SYMBOLS 1 Light source 10 Housing 11 Bottom surface 12 Output surface 13 Upper side surface 13a First surface 13b Second surface 14 Lower side surface 14a First surface 14b Second surface 15 Right side surface 15a First surface 15b Second surface 16 Left side surface 16a First surface 16b Second surface 20 Light emitting device

Claims (7)

筐体に複数の発光装置を取り付け、前記発光装置から出射する光を前記筺体の出射面から出射させる光源であって、
前記筐体の側面は、
前記出射面の垂線に対してテーパー状であって、前記複数の発光装置が取り付けられる第１面と、
前記第１面から前記筺体の出射面側に向けて続く、前記出射面の垂線に対してテーパー状の第２面と、
を有し、
前記第１面の垂線が前記第１面に対向する第２面と交差する、
ことを特徴とする光源。 A light source that attaches a plurality of light emitting devices to a housing and emits light emitted from the light emitting device from an exit surface of the housing,
The side surface of the housing is
A first surface that is tapered with respect to the normal of the exit surface and to which the plurality of light emitting devices are attached;
A second surface tapered from the first surface toward the exit surface side of the housing, and tapered with respect to the normal of the exit surface;
Have
The perpendicular of the first surface intersects the second surface opposite the first surface,
A light source characterized by that. 前記筺体の出射面の外周は、前記筺体の底面の外周よりも長い、ことを特徴とする請求項１に記載の光源。   The light source according to claim 1, wherein an outer periphery of the exit surface of the housing is longer than an outer periphery of a bottom surface of the housing. 前記出射面の垂線に対する前記第１面のテーパー角は、前記出射面の垂線に対する前記第２面のテーパー角よりも大きい、ことを特徴とする請求項１または請求項２に記載の光源。   3. The light source according to claim 1, wherein a taper angle of the first surface with respect to a normal of the emission surface is larger than a taper angle of the second surface with respect to a normal of the emission surface. 前記筺体は、多面体の光学ガラスである、ことを特徴とする請求項１〜請求項３のいずれか１項に記載の光源。   The light source according to any one of claims 1 to 3, wherein the casing is a polyhedral optical glass. 前記第１面の垂線と前記第１面に対向する第２面の垂線とにより形成される角度は、前記第２面の臨界角より大きい、ことを特徴とする請求項４に記載の光源。   The light source according to claim 4, wherein an angle formed by a perpendicular of the first surface and a perpendicular of the second surface facing the first surface is larger than a critical angle of the second surface. 前記筺体は、側面に反射材が取り付けられた中空のライトパイプである、ことを特徴とする請求項１〜請求項３のいずれか１項に記載の光源。   The light source according to any one of claims 1 to 3, wherein the casing is a hollow light pipe having a reflective material attached to a side surface thereof. 前記発光装置は、前記筺体の側面と底面とに取り付けられている、ことを特徴とする請求項１〜請求項６のいずれか１項に記載の光源。

The light source according to any one of claims 1 to 6, wherein the light emitting device is attached to a side surface and a bottom surface of the casing.

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