JP2016066008A - Linear luminous body with skin - Google Patents
Linear luminous body with skin Download PDFInfo
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- JP2016066008A JP2016066008A JP2014195648A JP2014195648A JP2016066008A JP 2016066008 A JP2016066008 A JP 2016066008A JP 2014195648 A JP2014195648 A JP 2014195648A JP 2014195648 A JP2014195648 A JP 2014195648A JP 2016066008 A JP2016066008 A JP 2016066008A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
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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
Abstract
Description
本発明は、線状発光体の改良、詳しくは、発光性能の面において、押出成形時に金型との接触により発光面上にスジ状の凹凸が生じる問題を解消することができ、また平滑な発光面を使用直前まで損傷から保護することもでき、しかも、使い勝手にも優れた表皮付き線状発光体に関するものである。 The present invention improves the linear light emitter, more specifically, in terms of light emission performance, can solve the problem of streaky irregularities on the light emitting surface due to contact with the mold during extrusion molding, and is smooth. The present invention relates to a linear light emitting body with a skin that can protect a light emitting surface from damage until just before use, and is excellent in usability.
周知のとおり、街中で見かけるイルミネーションや電飾看板の多くには、ネオンライトのような線状発光体が利用されているが、本体が硬質なガラス管から構成されるネオンライトは、発光体そのものに可撓性がないため、発光体を曲げて取付け面の湾曲部に沿わせたり、任意の絵や文字を模したりすることができない。 As is well known, many of the illuminations and signboards you see in town use a linear light emitter like a neon light, but a neon light consisting of a hard glass tube is a light emitter itself. Therefore, it is not possible to bend the light emitter along the curved portion of the mounting surface or imitate any picture or character.
そこで、従来においては、形態自由度の高い線状発光体として利用できるプラスチック製の導光棒も開発されている。しかし、この種の線状発光体は、端面から入射した光を周面でムラなく発光させる必要があるものの、発光体の周面に細かな凹凸があると、その部分から光が漏れ出て発光が不均一になる問題があった。 Therefore, conventionally, a light guide rod made of plastic that can be used as a linear light emitter having a high degree of freedom has been developed. However, this type of linear light emitter needs to emit light incident from the end face evenly on the peripheral surface, but if there are fine irregularities on the peripheral surface of the light emitter, light leaks from that portion. There was a problem of non-uniform emission.
特に、上記線状発光体を押出成形する場合には、発光面を形成する樹脂が金型やガイドに接触しつつ押出・案内されるため、発光面となる線状発光体の周面に、細かなスジ状の凹凸が生じ易かった。しかも、上記従来の線状発光体は、発光面が露出した状態で成形されていたため、運搬時などに他の物と接触して発光面に傷が付き易かった。 In particular, when extruding the linear light emitter, the resin that forms the light emitting surface is extruded and guided while in contact with the mold and the guide. Fine streak-like irregularities were easily generated. Moreover, since the conventional linear light emitter is formed with the light emitting surface exposed, the light emitting surface is easily damaged by contact with other objects during transportation or the like.
一方、従来においては、押出成形品の化粧面をより平滑にするために、化粧面を仮被覆層で覆う技術も公知となっているが(特許文献１参照)、この従来技術に関しては、成形品の周面の一部を覆う仮被覆層については容易に剥離できるものの、成形品の周面全体を覆う仮被覆層については、破断や剥離が難しくなる問題があった。 On the other hand, conventionally, a technique for covering a decorative surface with a temporary coating layer in order to make the decorative surface of an extrusion-molded product smoother is also known (see Patent Document 1). Although the temporary covering layer covering a part of the peripheral surface of the product can be easily peeled off, the temporary covering layer covering the entire peripheral surface of the molded product has a problem that it is difficult to break or peel off.
他方、本件出願人が、以前に開発したプラスチック製の線状発光体(特許文献２参照)の中には、クラッド層の周面に長手方向の溝部を備えたものも存在するが、この発光面全体にわたって設けられた溝部は、発光性能の向上を目的として形成されたものであるため、クラッド層の剥離に利用することを想定していない。 On the other hand, some of the plastic linear light emitters developed by the applicant of the present invention (see Patent Document 2) have a groove in the longitudinal direction on the peripheral surface of the cladding layer. Since the groove provided over the entire surface is formed for the purpose of improving the light emission performance, it is not assumed to be used for peeling the clad layer.
そこで本発明は、上記の如き問題に鑑みて為されたものであり、その目的とするところは、発光性能の面において、押出成形時に金型との接触により発光面上にスジ状の凹凸が生じる問題を解消することができ、また平滑な発光面を使用直前まで損傷から保護することもでき、しかも、使い勝手の面において仮被覆層の破断、剥離も容易に行える表皮付き線状発光体を提供することにある。 Therefore, the present invention has been made in view of the above-described problems, and the object of the present invention is to have streaky irregularities on the light emitting surface due to contact with the mold during extrusion molding in terms of light emitting performance. A linear light-emitting body with a skin that can eliminate problems that occur, can protect a smooth light-emitting surface from damage until just before use, and can easily break and peel the temporary coating layer in terms of usability. It is to provide.
本発明者が上記課題を解決するために採用した手段は次のとおりである。 Means employed by the present inventor to solve the above problems are as follows.
即ち、本発明は、透明な熱可塑性樹脂から成るコア層１と、このコア層１の周面全体を被覆する熱可塑性樹脂から成る表皮層２とを共押出成形により一体化して、表皮付き線状発光体を構成すると共に、
前記表皮層２に、コア層１の樹脂材料と非相溶で、かつ、非接着性の樹脂材料を使用し、更に表皮層２の周面の一部に、一本または複数本の破断溝21が長手方向に沿って形成して構成した点に特徴がある。
That is, in the present invention, a core layer 1 made of a transparent thermoplastic resin and a skin layer 2 made of a thermoplastic resin covering the entire peripheral surface of the core layer 1 are integrated by coextrusion molding to obtain a line with skin A light emitter and
The skin layer 2 is made of a resin material that is incompatible with the resin material of the core layer 1 and is non-adhesive. Further, one or a plurality of fracture grooves are formed on a part of the peripheral surface of the skin layer 2. It is characterized in that 21 is formed along the longitudinal direction.
また本発明では、上記表皮付き線状発光体の成形性を向上させるために、コア層１にＭＦＲ(Melt flow rate)が0.5〜8の樹脂材料を使用すると共に、表皮層２に、ＭＦＲが1〜30で、かつ、コア層１のＭＦＲよりも大きい樹脂材料を使用するのが好ましい。また更に、共押出成形されるコア層１の寸法・形状を安定させるために、外側の表皮層２の厚みを0.05〜0.3mmとするのが好ましい。 In the present invention, in order to improve the moldability of the above-described linear light emitter with skin, a resin material having an MFR (Melt flow rate) of 0.5 to 8 is used for the core layer 1 and MFR is formed on the skin layer 2. It is preferable to use a resin material that is 1 to 30 and larger than the MFR of the core layer 1. Furthermore, in order to stabilize the size and shape of the core layer 1 to be coextruded, the thickness of the outer skin layer 2 is preferably 0.05 to 0.3 mm.
一方、本発明では、上記表皮層２を剥がし易くするために、表皮層２における破断溝21の底部部位の厚みを0.05mm以下とするのが好ましい。また同様の理由で、上記表皮層２の引張弾性率を、伸び過ぎず切れ易い1000〜2000ＭＰaとするのが好ましい。 On the other hand, in the present invention, in order to make it easy to peel off the skin layer 2, it is preferable that the thickness of the bottom portion of the fracture groove 21 in the skin layer 2 is 0.05 mm or less. For the same reason, the tensile elastic modulus of the skin layer 2 is preferably set to 1000 to 2000 MPa which is easy to break without being excessively stretched.
また本発明では、上記コア層１及び表皮層２の条件に合う最適な樹脂材料として、コア層１にアクリル系樹脂を使用すると共に、表皮層２にポリプロピレン樹脂またはポリエチレン樹脂を使用するのが好ましい。 In the present invention, it is preferable to use an acrylic resin for the core layer 1 and a polypropylene resin or a polyethylene resin for the skin layer 2 as an optimal resin material that meets the conditions of the core layer 1 and the skin layer 2. .
他方、上記構成に代えて、透明な熱可塑性樹脂から成るコア層１と；このコア層１の周面を被覆する半透明樹脂から成るクラッド層３と；このクラッド層３の周面全体を被覆する熱可塑性樹脂から成る表皮層２とを共押出成形により一体化して表皮付き線状発光体を構成することもでき、その場合には、前記表皮層２に、クラッド層３の樹脂材料と非相溶で、かつ、非接着性の樹脂材料を用いると共に、表皮層２の周面の一部に、一本または複数本の破断溝21を長手方向に沿って形成する。 On the other hand, instead of the above configuration, a core layer 1 made of a transparent thermoplastic resin; a clad layer 3 made of a translucent resin covering the peripheral surface of the core layer 1; and covering the entire peripheral surface of the clad layer 3 It is also possible to form a linear light-emitting body with a skin by integrating the skin layer 2 made of a thermoplastic resin by coextrusion molding. In this case, the resin material of the cladding layer 3 and the non-cladding layer 3 A compatible and non-adhesive resin material is used, and one or a plurality of fracture grooves 21 are formed in the longitudinal direction in a part of the peripheral surface of the skin layer 2.
本発明では、プラスチック製の線状発光体において、発光面となるコア層(またはクラッド層)の周面全体を被覆する表皮層を形成すると共に、この表皮層に、コア層(またはクラッド層)と非相溶で、非接着性の熱可塑性樹脂を使用して剥離可能に構成したことにより、発光面を形成する溶融樹脂をダイ孔内面に接触させずに押出成形することが可能となるため、発光面にスジ状の凹凸が生じる問題を解消できる。 In the present invention, in the plastic linear light emitter, a skin layer that covers the entire peripheral surface of the core layer (or cladding layer) serving as the light emitting surface is formed, and the core layer (or cladding layer) is formed on the skin layer. Because it is possible to extrude the molten resin that forms the light emitting surface without contacting the inner surface of the die hole, by using a non-adhesive, non-adhesive thermoplastic resin that can be peeled off. The problem of streak-like irregularities on the light emitting surface can be solved.
また、上記押出成形時には、溶融状態で合流させたコア層(またはクラッド層)の樹脂材料と表皮層の樹脂材料を、ダイ孔中において層流の状態で移動させているため、内側を流れる樹脂材料(コア層またはクラッド層)の周面に外側を流れる樹脂材料(表皮層)の形状を転写して、平滑な発光面を形成することができる。 Further, at the time of the extrusion molding, since the resin material of the core layer (or clad layer) and the resin material of the skin layer that are joined in the molten state are moved in a laminar state in the die hole, the resin flowing inside The shape of the resin material (skin layer) flowing outside can be transferred to the peripheral surface of the material (core layer or clad layer) to form a smooth light emitting surface.
また本発明では、上記のように平滑な発光面を形成できるだけでなく、表皮層により使用直前まで発光面を損傷から保護することができるため、運搬中などに発光面に細かな傷が付く心配もない。そのため、本発明に係る線状発光体では、発光面上に生じた細かな凹凸により発光ムラが起こる問題を解消することができる。 In the present invention, not only a smooth light emitting surface can be formed as described above, but also the light emitting surface can be protected from damage until immediately before use by the skin layer. Nor. Therefore, in the linear light emitter according to the present invention, it is possible to solve the problem of uneven light emission due to fine irregularities generated on the light emitting surface.
しかも、本発明では、表皮層の一部に長手方向の破断溝を形成しているため、この破断溝にツメを差し込んで溝を押し広げれば、簡単に表皮層(仮被覆層)を破くことができる。また、差し込んだツメを破いた部分から破断溝に沿ってスライドさせるだけで、破断溝全体を破くことができるため、表皮層を簡単に剥離して取り除くことができる。 In addition, in the present invention, since a longitudinal fracture groove is formed in a part of the skin layer, if the claw is inserted into the fracture groove and the groove is widened, the skin layer (temporary coating layer) can be easily broken. Can do. Moreover, since the whole fracture | rupture groove | channel can be broken only by making it slide along a fracture | rupture groove | channel from the part which broke the nail | claw inserted, the skin layer can be peeled off easily and removed.
したがって、本発明により、装飾等に使用した際に発光ムラを抑えて比較的均一な発光性が得られるだけでなく、使用時にカッター等の道具を使わなくても簡単に表皮層を剥離できる使い勝手の面でも優れた線状発光体を提供できることから、本発明の実用的利用価値は頗る高い。 Therefore, according to the present invention, it is possible not only to obtain a relatively uniform light emission property by suppressing light emission unevenness when used for decoration, etc., but also to be able to easily peel off the skin layer without using a tool such as a cutter at the time of use. Since the linear light-emitting body excellent also in this aspect can be provided, the practical utility value of the present invention is very high.
『実施例１』
本発明の実施例１について、図１に基いて説明する。なお同図において、符号１で指示するものは、コア層であり、符号２で指示するものは、表皮層である。また符号Ｒで指示するものは、線状発光体である。
“Example 1”
A first embodiment of the present invention will be described with reference to FIG. In the figure, what is indicated by reference numeral 1 is a core layer, and what is indicated by reference numeral 2 is a skin layer. Also, what is indicated by the symbol R is a linear light emitter.
［表皮付き線状発光体の構成］
この実施例１では、表皮付き線状発光体Ｒを、断面円形の棒状に成形されて成る透明な熱可塑性樹脂製のコア層１(直径:2.85mm)と、このコア層１の周面全体を被覆する筒状に成形されて成る熱可塑性樹脂製の表皮層２(厚さ:0.1mm)とから構成している(図１、図２参照)。またコア層１と表皮層２は、共押出成形によって一体化している。
[Configuration of linear light emitter with skin]
In Example 1, a linear light-emitting body R with a skin is made of a transparent thermoplastic resin core layer 1 (diameter: 2.85 mm) formed into a rod having a circular cross section, and the entire peripheral surface of the core layer 1 And a skin layer 2 (thickness: 0.1 mm) made of a thermoplastic resin formed into a cylindrical shape covering the surface (see FIGS. 1 and 2). The core layer 1 and the skin layer 2 are integrated by coextrusion molding.
また本実施例では、上記コア層１に、透明性に優れたアクリル系樹脂であるポリメタクリル酸メチル(ＰＭＭＡ)を使用して全光線透過率を93％としている。一方、コア層１の屈折率は、空気よりも大きい1.45〜1.60としている。また、上記表皮層２の材料には、ポリメタクリル酸メチルとの共押出成形可能なポリプロピレン樹脂を使用している。 In the present embodiment, polymethyl methacrylate (PMMA), which is an acrylic resin having excellent transparency, is used for the core layer 1 so that the total light transmittance is 93%. On the other hand, the refractive index of the core layer 1 is 1.45 to 1.60, which is larger than air. Further, as the material of the skin layer 2, a polypropylene resin that can be co-extruded with polymethyl methacrylate is used.
また、上記表皮層２の樹脂材料に関しては、共押出成形時にコア層１との融着や接着が起こらないように、コア層１の樹脂材料と非相溶で、かつ、非接着性の樹脂材料を使用している。これによって、コア層１に密着した表皮層２を、容易に剥離できるだけでなく、剥離時にコア層１の表面が傷付いたり、コア層１の表面に表皮層２の一部が残留したりする問題も生じない。 Further, regarding the resin material of the skin layer 2, a resin that is incompatible with the resin material of the core layer 1 and is non-adhesive so that fusion or adhesion with the core layer 1 does not occur during coextrusion molding. Material is used. As a result, the skin layer 2 adhered to the core layer 1 can be easily peeled off, and the surface of the core layer 1 is damaged at the time of peeling, or a part of the skin layer 2 remains on the surface of the core layer 1. There is no problem.
加えて、上記コア層１と表皮層２の共押出成形時には、溶融状態で合流させたコア層１の樹脂材料と表皮層２の樹脂材料を、ダイ孔中において層流の状態で移動させることができるため、内側を流れる樹脂材料(コア層１)の周面に外側を流れる樹脂材料(表皮層２)の形状を転写して、平滑な発光面を形成できる。 In addition, at the time of co-extrusion molding of the core layer 1 and the skin layer 2, the resin material of the core layer 1 and the resin material of the skin layer 2 that have been joined in a molten state are moved in a laminar state in the die hole. Therefore, the shape of the resin material (skin layer 2) flowing outside can be transferred to the peripheral surface of the resin material (core layer 1) flowing inside to form a smooth light emitting surface.
しかも、本実施例では、上記コア層１にＭＦＲが0.5〜8の樹脂材料を使用すると共に、表皮層２に、ＭＦＲが1〜30で、かつ、コア層１のＭＦＲよりも大きい樹脂材料を使用している。これにより、押出成形時において、表皮層２を形成する溶融樹脂の流動性が高まるため、コア層１を形成する溶融樹脂の動きに、表皮層２の溶融樹脂を円滑に追随させることができる。 In addition, in this embodiment, a resin material having an MFR of 0.5 to 8 is used for the core layer 1, and a resin material having an MFR of 1 to 30 and larger than the MFR of the core layer 1 is used for the skin layer 2. I use it. Thereby, since the fluidity | liquidity of the molten resin which forms the skin layer 2 improves at the time of extrusion molding, the molten resin of the skin layer 2 can be made to follow smoothly the motion of the molten resin which forms the core layer 1. FIG.
一方、上記線状発光体Ｒの表皮層２の周面の一部には、間隔を空けて二本の破断溝21を長手方向に沿って形成している。これにより、図３に示すように、一方の破断溝21にツメを差し込んで溝を押し広げるだけで、簡単に表皮層２を破ることができる。またそのままツメを破断溝21に沿ってスライドさせれば、破断溝21全体を破ることができる。 On the other hand, two fracture grooves 21 are formed along the longitudinal direction at a part of the peripheral surface of the skin layer 2 of the linear light emitter R with a space therebetween. Thus, as shown in FIG. 3, the skin layer 2 can be easily broken by simply inserting a claw into one of the fractured grooves 21 and expanding the groove. If the claw is slid along the breaking groove 21 as it is, the whole breaking groove 21 can be broken.
なお本実施例では、上記表皮層２をより剥がし易くするために、破断溝21の深さを0.08mmとして、表皮層２における破断溝21の底部部位の厚みを0.02mmとしている。但し、破断溝21の深さについては、表皮層２における破断溝21の底部部位の厚みが、0.05mm以下となるように設定されていればよい。 In this embodiment, in order to make it easier to peel the skin layer 2, the depth of the fracture groove 21 is 0.08 mm, and the thickness of the bottom portion of the fracture groove 21 in the skin layer 2 is 0.02 mm. However, the depth of the fracture groove 21 may be set so that the thickness of the bottom portion of the fracture groove 21 in the skin layer 2 is 0.05 mm or less.
また、上記表皮層２の厚みに関しては、薄過ぎると破断溝21の形成が難しくなり、また厚過ぎると、共押出成形されるコア層１の寸法・形状が安定しなくなるため、これらの問題が生じない0.05〜0.3mmの範囲に設定するのが好ましい。また、上記表皮層２の引張弾性率を1000〜2000ＭＰaとすれば、剥がす際に表皮層２が伸び過ぎず千切れ易い強度とすることができる。 Further, regarding the thickness of the skin layer 2, if the thickness is too thin, it becomes difficult to form the fracture groove 21, and if it is too thick, the size and shape of the core layer 1 to be co-extruded are not stable. It is preferable to set it in the range of 0.05 to 0.3 mm which does not occur. Moreover, if the tensile elasticity modulus of the said skin layer 2 shall be 1000-2000 MPa, when peeling, it can be set as the intensity | strength which the skin layer 2 does not extend too much and is easy to tear.
また、上記表皮層２に破断溝21を形成する方法に関しては、押出成形時に金型等を工夫して形成する方法でも、押出成形後に切削加工を行う方法でもよい。また表皮層１の破断溝21内を、表皮層１の周面と異なる色に着色することにより、破断層21の位置を容易に特定できるようにしてもよい。 The method for forming the fracture groove 21 in the skin layer 2 may be a method in which a mold is devised at the time of extrusion molding, or a method in which cutting is performed after extrusion molding. Further, the inside of the breaking groove 21 of the skin layer 1 may be colored in a color different from the peripheral surface of the skin layer 1 so that the position of the breaking layer 21 can be easily specified.
『実施例２』
次に本発明の実施例２について、図４に基いて以下に説明する。この実施例２では、透明な熱可塑性樹脂から成るコア層１の外側に、コア層１の周面を被覆する半透明樹脂から成るクラッド層３を形成すると共に、このクラッド層３の外側に、クラッド層３の周面全体を被覆する熱可塑性樹脂から成る表皮層２を形成している。
“Example 2”
Next, Example 2 of the present invention will be described below with reference to FIG. In Example 2, a clad layer 3 made of a translucent resin covering the peripheral surface of the core layer 1 is formed outside the core layer 1 made of a transparent thermoplastic resin, and outside the clad layer 3, A skin layer 2 made of a thermoplastic resin that covers the entire peripheral surface of the cladding layer 3 is formed.
また、上記コア層１、クラッド層３及び表皮層２は、共押出成形によって三層一体化している。一方、上記表皮層２の材料には、クラッド層３の樹脂材料と非相溶で、かつ、非接着性の樹脂材料を使用すると共に、この表皮層２の周面の一部に、一本の破断溝21を長手方向に沿って形成している。 The core layer 1, the cladding layer 3 and the skin layer 2 are integrated in three layers by coextrusion molding. On the other hand, as the material of the skin layer 2, a resin material that is incompatible with the resin material of the clad layer 3 and is non-adhesive is used. The fracture groove 21 is formed along the longitudinal direction.
これにより、実施例１と同様、線状発光体Ｒの発光面となるクラッド層３の周面を、スジ状の凹凸のない平滑面とすることができると共に、クラッド層３の周面を、使用前まで表皮層２によって損傷から保護することができる。なおクラッド層３については、屈折率がコア層１よりも小さく空気より大きくなるように形成すればよく、クラッド層３の材料には、フッ素系樹脂等を使用できる。 Thereby, like Example 1, while making the surrounding surface of the clad layer 3 used as the light emission surface of the linear light-emitting body R into a smooth surface without a stripe-shaped unevenness | corrugation, the surrounding surface of the cladding layer 3 is Until use, the skin layer 2 can protect against damage. The clad layer 3 may be formed so that its refractive index is smaller than that of the core layer 1 and larger than that of air, and a fluorine-based resin or the like can be used as the material of the clad layer 3.
なお、クラッド層３にフッ素系樹脂を用いる場合には、ヘキサフルオロプロピレンとテトラフロオロエチレンとエチレンの共重合体、またはエチレンとテトラフロオロエチレンの共重合体を使用するのが好ましい。 When a fluororesin is used for the cladding layer 3, it is preferable to use a copolymer of hexafluoropropylene, tetrafluoroethylene, and ethylene, or a copolymer of ethylene and tetrafluoroethylene.
本発明は、概ね上記のように構成されるが、記載した実施例にのみ限定されるものではなく、「特許請求の範囲」の記載内において種々の変更が可能であって、例えば、コア層１に用いる樹脂材料に関しては、ポリメタクリル酸メチルだけでなく、ポリメタクリル酸エチル、ポリメタクリル酸ｎ−ブチル、ポリメタクリル酸イソブチル、ポリメタクリル酸ｔ−ブチル、ポリメタクリル酸２−エチルヘキシル等の他のアクリル系樹脂やポリカーボネート樹脂を使用することもできる。 The present invention is generally configured as described above. However, the present invention is not limited to the described embodiments, and various modifications can be made within the description of “Claims”. Regarding the resin material used for 1, not only polymethyl methacrylate, but also polyethyl methacrylate, poly-n-butyl methacrylate, poly-isobutyl methacrylate, poly-t-butyl methacrylate, poly-ethyl 2-ethylhexyl methacrylate, etc. Acrylic resins and polycarbonate resins can also be used.
また、表皮層２の材料についても、コア層１(及びクラッド層３)の樹脂材料と共押出成形が可能な熱可塑性樹脂で、かつ、コア層１(またはクラッド層３)の樹脂材料と非相溶、非接着の樹脂であれば、ポリプロピレン樹脂以外のポリエチレン樹脂等を好適に使用することができる。 The material of the skin layer 2 is also a thermoplastic resin that can be co-extruded with the resin material of the core layer 1 (and the clad layer 3), and the resin material of the core layer 1 (or the clad layer 3). As long as it is a compatible and non-adhesive resin, a polyethylene resin other than the polypropylene resin can be suitably used.
また更に、コア層１の形状に関しても、円形型の断面形状とする必要はなく、例えば半円型や扇型、角形型、楕円型、異形型等の断面形状で成形することもできる。また、上記表皮層２の破断溝21の断面形状についても、ツメ等が引っ掛かる程度の大きさの開口部を有する形状であればよい。 Furthermore, the shape of the core layer 1 does not need to have a circular cross-sectional shape, and can be formed in a cross-sectional shape such as a semicircular shape, a fan shape, a square shape, an elliptical shape, or an irregular shape. Further, the cross-sectional shape of the fracture groove 21 of the skin layer 2 may be a shape having an opening that is large enough to catch a claw or the like.
また更に、表皮面層２に形成する破断溝21の本数に付いても、実施例では二本までしか形成していないが、三本以上形成することもできる。また表皮層２については、特に発光性能は求められないため、不透明な着色樹脂を使用することもでき、何れのものも本発明の技術的範囲に属する。 Furthermore, although the number of breaking grooves 21 formed in the skin surface layer 2 is limited to two in the embodiment, three or more can be formed. For the skin layer 2, since no light emission performance is particularly required, an opaque colored resin can be used, and any of them belongs to the technical scope of the present invention.
近年、イルミネーションや電飾看板等においてＬＥＤを光源に利用した線状発光体の導入が進んでいる。そのような中で、本発明の表皮付き線状発光体は、発光面を凹凸のない滑らかな表面に仕上げることができ、更に使い勝手にも優れた有用な技術であるため、その産業上の利用価値は非常に高い。 In recent years, the introduction of linear light emitters using LEDs as light sources has been advancing in illuminations, electric signs, and the like. Under such circumstances, the linear light emitter with a skin of the present invention can finish the light emitting surface into a smooth surface without unevenness, and is a useful technique with excellent usability. The value is very high.
１ コア層
２ 表皮層
21 破断溝
３ クラッド層
Ｒ 線状発光体
1 Core layer 2 Skin layer
21 Fracture groove 3 Clad layer R Linear illuminant
Claims (7)
前記表皮層(２)に、コア層(１)の樹脂材料と非相溶で、かつ、非接着性の樹脂材料が用いられると共に、表皮層(２)の周面の一部に、一本または複数本の破断溝(21)が長手方向に沿って形成されていることを特徴とする表皮付き線状発光体。 A core layer (1) made of a transparent thermoplastic resin and a skin layer (2) made of a thermoplastic resin covering the entire peripheral surface of the core layer (1), and these are integrated by coextrusion molding A linear light emitter with an epidermis,
The skin layer (2) is made of a resin material that is incompatible with the resin material of the core layer (1) and is non-adhesive. Alternatively, a linear light emitter with a skin, wherein a plurality of fracture grooves (21) are formed along the longitudinal direction.
前記表皮層(２)に、クラッド層(３)の樹脂材料と非相溶で、かつ、非接着性の樹脂材料が用いられると共に、表皮層(２)の周面の一部に、一本または複数本の破断溝(21)が長手方向に沿って形成されていることを特徴とする表皮付き線状発光体。 A core layer (1) made of a transparent thermoplastic resin; a clad layer (3) made of a translucent resin covering the peripheral surface of the core layer (1); and covering the entire peripheral surface of the clad layer (3) A linear light-emitting body with a skin comprising a skin layer (2) made of a thermoplastic resin, and integrated by coextrusion molding,
For the skin layer (2), a resin material that is incompatible with the resin material of the clad layer (3) and is non-adhesive is used. Alternatively, a linear light emitter with a skin, wherein a plurality of fracture grooves (21) are formed along the longitudinal direction.
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| JP2014195648A JP6282207B2 (en) | 2014-09-25 | 2014-09-25 | Linear light emitter with skin |
| PCT/JP2015/003899 WO2016047016A1 (en) | 2014-09-25 | 2015-08-03 | Covered wire-shaped light-emitting body |
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| JP2014195648A JP6282207B2 (en) | 2014-09-25 | 2014-09-25 | Linear light emitter with skin |
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|---|---|---|---|---|
| WO2017090249A1 (en) * | 2015-11-27 | 2017-06-01 | フクビ化学工業株式会社 | Method for manufacturing circumferential-surface-light-emitting light guide rod and circumferential-surface-light-emitting light guide rod |
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|---|---|---|---|---|
| JPH0311501A (en) * | 1989-06-07 | 1991-01-18 | Kenichi Noshita | Lighting device and its manufacture |
| JPH05273414A (en) * | 1992-03-26 | 1993-10-22 | Toto Ltd | Optical fiber lighting device |
| JP2001108834A (en) * | 1999-10-04 | 2001-04-20 | Three M Innovative Properties Co | Optical fiber and light emission display device using the same |
| JP2004305756A (en) * | 2003-03-26 | 2004-11-04 | Yoshio Sana | Medical lighting device |
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2014
- 2014-09-25 JP JP2014195648A patent/JP6282207B2/en active Active
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- 2015-08-03 WO PCT/JP2015/003899 patent/WO2016047016A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0311501A (en) * | 1989-06-07 | 1991-01-18 | Kenichi Noshita | Lighting device and its manufacture |
| JPH05273414A (en) * | 1992-03-26 | 1993-10-22 | Toto Ltd | Optical fiber lighting device |
| JP2001108834A (en) * | 1999-10-04 | 2001-04-20 | Three M Innovative Properties Co | Optical fiber and light emission display device using the same |
| JP2004305756A (en) * | 2003-03-26 | 2004-11-04 | Yoshio Sana | Medical lighting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017090249A1 (en) * | 2015-11-27 | 2017-06-01 | フクビ化学工業株式会社 | Method for manufacturing circumferential-surface-light-emitting light guide rod and circumferential-surface-light-emitting light guide rod |
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| WO2016047016A1 (en) | 2016-03-31 |
| JP6282207B2 (en) | 2018-02-21 |
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