JP2014041813A - Linear lighting device - Google Patents

Linear lighting device Download PDF

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JP2014041813A
JP2014041813A JP2013078622A JP2013078622A JP2014041813A JP 2014041813 A JP2014041813 A JP 2014041813A JP 2013078622 A JP2013078622 A JP 2013078622A JP 2013078622 A JP2013078622 A JP 2013078622A JP 2014041813 A JP2014041813 A JP 2014041813A
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light
light source
light guide
case
shielding
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JP6036493B2 (en
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Yukihiko Umeda
幸彦 梅田
Tetsu Mizusiro
哲 水城
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Toyoda Gosei Co Ltd
豊田合成株式会社
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Application filed by Toyoda Gosei Co Ltd, 豊田合成株式会社 filed Critical Toyoda Gosei Co Ltd
Priority to JP2013078622A priority patent/JP6036493B2/en
Priority claimed from US13/939,148 external-priority patent/US9266468B2/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/60Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects
    • B60Q3/62Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides
    • B60Q3/64Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for a single lighting device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q3/00Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
    • B60Q3/70Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose
    • B60Q3/78Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors characterised by the purpose for generating luminous strips, e.g. for marking trim component edges

Abstract

PROBLEM TO BE SOLVED: To provide a linear lighting device using a long transparent material which enables easy fixture to an attachment member, prevents assembly error, and obtains a high quality lighting pattern.SOLUTION: A linear lighting device includes: a long transparent material; a light source provided at an end part in a longitudinal direction of the transparent material; and a case which houses the transparent material and the light source. A stepped cutout is provided at the other end part of the transparent material which is opposite to the end part. A protruding part, which protrudes into the cutout and is disposed in the cutout, is provided on a case inner surface facing the cutout.

Description

この発明は、主にLEDを光源として長尺の導光体を用いた線状照明装置に関する。   The present invention relates to a linear illumination device using a long light guide mainly using an LED as a light source.
現在、自動車用の照明にLEDを採用する機会が多くなっている。LEDは指向性が高い点状光源であることから、レンズや導光体により照明態様(照明パターン)を変化させることで、車室外照明や車室内照明の光源として利用される。このうち光源と照明対象物(被照明物)とが近くに設定される照明、例えば図1に示した、グローブボックスやカップホルダなど収納内部の照明、室内の足元照明、スイッチなどの操作部用照明や、インパネやトリムなどの装飾・加飾を目的とした雰囲気照明、各種イルミネーションなどでは、その用途からして光量がさほど要求されない。このため点状発光するLEDの光を導光体により線状に変換することで、従来とは異なる照明態様を実現し意匠性を高めることができる。このような線状の導光体を用いた線状照明装置として、例えば特許文献1〜4が知られている。   At present, there are increasing opportunities to adopt LEDs for automobile lighting. Since the LED is a point light source with high directivity, it is used as a light source for vehicle interior illumination or vehicle interior illumination by changing the illumination mode (illumination pattern) using a lens or a light guide. Among these, lighting for which a light source and an object to be illuminated (illuminated object) are set close to each other, for example, lighting inside a storage such as a glove box or cup holder, indoor foot lighting, or an operation unit such as a switch shown in FIG. For lighting, atmosphere lighting for the purpose of decoration / decoration such as instrument panel and trim, and various illuminations, the amount of light is not so required depending on the application. For this reason, by converting the light of the LED which emits dot-like light into a linear shape by the light guide, an illumination mode different from the conventional one can be realized and the design can be improved. As a linear illumination device using such a linear light guide, for example, Patent Documents 1 to 4 are known.
特許4737241Patent 4737241 特許4463246Patent 4463246 特開2009−269492JP 2009-269492 A 特開2011−240811JP2011-240811A
車両用の照明、特に車室内用の照明として用いる場合、このような長尺の線状導光体は、運転を妨げることがないように運転者や搭乗者へのグレアを防止すべく、直接視認できないように内装部材や収納部材の内部に配置される。このため、導光体により線状光に変換しても、内装部材や収納部材に光の一部が遮光・反射などされて照明パターンが乱れてしまう。さらに上述のよう車室内照明用途では光源(導光体)と被照明部材(照明される領域)とが20〜200mm程度と近いことから、この影響が輝度ムラや明暗差、または反射光による輝線として特に視認されやすかった。   When used as lighting for vehicles, particularly for interior lighting, such long linear light guides are used directly to prevent glare to the driver and passengers so as not to hinder driving. It arrange | positions inside an interior member or a storage member so that it cannot visually recognize. For this reason, even if it converts into linear light with a light guide, a part of light will be light-shielded and reflected by an interior member or a storage member, and an illumination pattern will be disturbed. Further, as described above, since the light source (light guide) and the illuminated member (illuminated area) are close to about 20 to 200 mm in the vehicle interior lighting application, this influence is caused by uneven brightness, brightness difference, or bright line due to reflected light. It was particularly easy to see.
一方で、このような線状導光体は、直径(断面四角形の場合はその一辺)が2〜5mmで長さ100〜1000mm程度、と非常に細長い。このため自重によるたわみや取付時のねじれによって所望の照明効果が得られず、また組付時に導光体が折れたり損傷しやすかった。さらに反射面と光出射面が定まっている導光体では、取り付ける際の向きをあわせる必要があるが、導光体は透明のために導光体の向きの確認が難しく、誤組付けが生じてしまうなどの問題があった。   On the other hand, such a linear light guide is very long and has a diameter (one side in the case of a square cross section) of 2 to 5 mm and a length of about 100 to 1000 mm. For this reason, a desired lighting effect cannot be obtained due to deflection due to its own weight or twisting during mounting, and the light guide body is easily broken or damaged during assembly. In addition, it is necessary to match the orientation of the light guide that has a reflecting surface and a light exit surface. However, because the light guide is transparent, it is difficult to check the orientation of the light guide, resulting in incorrect assembly. There was a problem such as.
そこで本発明の目的は、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる、長尺な導光体を用いた線状照明装置を提供することである。   SUMMARY OF THE INVENTION An object of the present invention is to provide a linear illumination device using a long light guide that can be easily fixed to a mounting member, prevent erroneous assembly, and obtain a high-quality illumination pattern. It is.
上記課題を解決するため、本発明の線状照明装置は、長尺の導光体と、導光体長手方向の端部に設けられる光源と、これらを収納するケースとを有し、前記導光体は、複数の溝が導光体長手方向に配列し、前記端部と反対側の他端部に階段状の切り欠きが設けられ、前記切り欠きと対向する前記ケースの内面には、前記切り欠き内にまで突出する突部が形成されている、ことを主な特徴とする。
上記構成の切り欠きと突部によって、誤組付けを防止できる。
In order to solve the above-mentioned problems, a linear illumination device of the present invention includes a long light guide, a light source provided at an end portion in the longitudinal direction of the light guide, and a case for housing these, The light body has a plurality of grooves arranged in the longitudinal direction of the light guide, a stepped notch is provided at the other end opposite to the end, and the inner surface of the case facing the notch is The main feature is that a protrusion protruding into the notch is formed.
Misassembly can be prevented by the notches and protrusions of the above-described configuration.
さらに、前記導光体は、その導光体長手方向に沿った一側面が出射面とされ、前記ケースは、前記導光体の前記出射面が露出するように導光体長手方向に沿って開口していること、を特徴とする。
上記構成によれば、ケースにより、導光体を保護するともに、導光体の出射面以外の面から漏れ出る光を出射面側へ反射することができる。
In addition, the light guide has a light exit surface on one side surface along the light guide longitudinal direction, and the case extends along the light guide longitudinal direction so that the light exit surface of the light guide is exposed. It is characterized by being open.
According to the above configuration, the case can protect the light guide and reflect light leaking from a surface other than the light exit surface of the light guide toward the exit surface.
前記切り欠きは、前記導光体の他端部の反射面側、出射面側又は側面側のいずれに設けられていてもよい。
但し、前記切り欠きは、前記導光体の他端部の出射面側に設けられていることが好ましい。この構成によれば、切り欠きが反射面側に設けられている場合と比べて、光が切り欠きで反射し迷光を生じさせて照明パターンを乱す現象が軽減され、照明パターンをより高品質に形成できる。
The notch may be provided on any of the reflection surface side, the emission surface side, and the side surface side of the other end of the light guide.
However, it is preferable that the notch is provided on the exit surface side of the other end of the light guide. According to this configuration, compared to the case where the cutout is provided on the reflecting surface side, the phenomenon that the light is reflected by the cutout and stray light is generated and the illumination pattern is disturbed is reduced, and the illumination pattern is improved in quality. Can be formed.
さらに、前記ケースの開口の導光体長手方向における光源とは反対側の他端部に、前記出射面と前記切り欠きと前記突部とを覆う遮光壁が設けられていること、を特徴とする。
上記構成によれば、誤組付け防止用の切り欠きと突部での光の反射による迷光を遮光壁により遮光して、光源とは反対側の他端部における光のムラを低減でき、高品質な照明パターンを得ることができる。
Furthermore, a light-shielding wall is provided at the other end of the opening of the case opposite to the light source in the longitudinal direction of the light guide to cover the emission surface, the cutout, and the protrusion. To do.
According to the above configuration, the stray light caused by the notch for preventing wrong assembly and the reflection of light at the protrusion is shielded by the light shielding wall, and the unevenness of the light at the other end opposite to the light source can be reduced. A quality illumination pattern can be obtained.
さらに、前記ケースの遮光壁よりも開口側に、その壁面が光源から離れる方向に向かって凹んだ湾曲形状を有する光形状加工壁が設けられていること、を特徴とする。
上記構成によれば、照明パターンの他端部において幅が漸減しつつぼやけて、照度が漸減するグラデーション調の照明態様を得ることができ、観者に対して線状の照明パターンに沿った空間的な広がりを印象付けることができる。また遮光壁ではなく光形状加工壁によって照明パターン端部を形成することとしたため、照明パターンの両端での均整がとれた高品質な照明パターンを形成できる。
Furthermore, an optical shape processing wall having a curved shape in which the wall surface is recessed in a direction away from the light source is provided on the opening side of the light shielding wall of the case.
According to the above configuration, it is possible to obtain a gradation-like illumination mode in which the width of the other end portion of the illumination pattern gradually decreases while the width gradually decreases, and the illuminance gradually decreases, and the space along the linear illumination pattern with respect to the viewer Impression can be impressed. Further, since the end portion of the illumination pattern is formed not by the light shielding wall but by the light shape processing wall, it is possible to form a high quality illumination pattern in which the illumination pattern is balanced at both ends.
さらに、前記複数の溝は、前記導光体長手方向に沿った断面においてV字形状又はU字形状をなし、前記導光体長手方向において等間隔に配列され、前記溝と前記切り欠きは、夫々の前記光源と対向する面が相似形状であること、を特徴とする。ここで、「V字形状」は、溝をなす2つの内側面が底で折曲して繋がった形状を意味し、2つの内側面は平らな面に限定されず、いずれか一方又は両方は湾曲した面でもよい。また、「U字形状」は、溝をなす2つの内側面が底で湾曲して繋がった形状を意味し、2つの内側面は平らな面に限定されず、いずれか一方又は両方は湾曲した面でもよい。よって、「U字形状」は、半円形状、半楕円形状等を含む。
上記構成によれば、溝と切り欠きによる反射パターンを近似でき、高品質な照明パターンを得ることができる。
さらに、前記切り欠きに隣接する溝と前記切り欠きとの間隔が、前記複数の溝同士の間隔と同じであること、を特徴とする。
上記構成によれば、溝・切り欠きの夫々の反射面による照明パターンが等間隔に配列することとなり、線状の照明パターンの全体にわたって高品質な照明態様を得ることが可能となる。
Further, the plurality of grooves are V-shaped or U-shaped in a cross section along the longitudinal direction of the light guide, are arranged at equal intervals in the longitudinal direction of the light guide, and the grooves and the notches are The surface facing each of the light sources has a similar shape. Here, “V-shape” means a shape in which two inner side surfaces forming a groove are bent and connected at the bottom, and the two inner side surfaces are not limited to flat surfaces, either one or both are It may be a curved surface. In addition, “U-shape” means a shape in which two inner surfaces forming a groove are curved and connected at the bottom, and the two inner surfaces are not limited to flat surfaces, either one or both are curved. It may be a surface. Therefore, the “U shape” includes a semicircular shape, a semielliptical shape, and the like.
According to the said structure, the reflective pattern by a groove | channel and a notch can be approximated, and a high quality illumination pattern can be obtained.
Furthermore, the interval between the groove adjacent to the notch and the notch is the same as the interval between the plurality of grooves.
According to the said structure, the illumination pattern by each reflective surface of a groove | channel and a notch will be arranged at equal intervals, and it becomes possible to obtain a high quality illumination aspect over the whole linear illumination pattern.
さらに、前記ケースの開口の導光体長手方向における光源側の端部に、前記導光体の出射面と対向する遮光壁が設けられること、および、前記出射面は、前記遮光壁と対向する領域を含むように光散乱部が設けられていること、を特徴とする。
上記構成によれば、光源側の端部における光のムラを低減でき、高品質な照明パターンを得ることができる。
Further, a light shielding wall facing the light exit surface of the light guide is provided at the light source side end of the opening of the case in the longitudinal direction of the light guide, and the light exit surface faces the light shield wall. The light scattering portion is provided so as to include the region.
According to the said structure, the nonuniformity of the light in the edge part by the side of a light source can be reduced, and a high quality illumination pattern can be obtained.
さらに、前記ケースの開口の導光体長手方向における光源とは反対側の他端部に、前記導光体の出射面を覆う遮光壁が設けられていること、および、前記出射面は、前記光源とは反対側の遮光壁と対向する領域を含むように光散乱部が設けられていること、を特徴とする。
上記構成によれば、光源とは反対側の他端部における光のムラを低減でき、高品質な照明パターンを得ることができる。
Furthermore, the other end of the opening of the case opposite to the light source in the longitudinal direction of the light guide is provided with a light-shielding wall that covers the light exit surface of the light guide, and A light scattering portion is provided so as to include a region facing the light shielding wall on the side opposite to the light source.
According to the said structure, the nonuniformity of the light in the other end part on the opposite side to a light source can be reduced, and a high quality illumination pattern can be obtained.
さらに、前記導光体の他端部の端面に、光散乱部が設けられていること、を特徴とする。
上記構成によれば、他端部に到達した光を積極的に導光体外部に放射できる。
Furthermore, a light scattering portion is provided on the end face of the other end portion of the light guide.
According to the said structure, the light which reached | attained the other end part can be actively radiated | emitted to the exterior of a light guide.
さらに、前記ケースの開口の導光体長手方向における光源側の端部には、前記出射面を覆い、光源側に向かって凹んだ湾曲形状を有する遮光壁が設けられ、前記ケースの開口の導光体長手方向における光源とは反対側の他端部には、前記出射面を覆う遮光壁が設けられ、さらに該遮光壁よりも開口側には、その壁面が光源から離れる方向に向かって凹んだ湾曲形状を有する光形状加工壁が設けられている、ことを特徴とする。
上記構成によれば、照明パターンの両端部において幅が漸減しつつぼやけて、照度が漸減するグラデーション調の照明態様を得ることができ、観者に対して線状の照明パターンに沿った空間的な広がりを印象付けることができる。また他端部側においては遮光壁ではなく光形状加工壁によって照明パターン端部を形成することとしたため、照明パターンの両端での均整がとれた高品質な照明パターンを形成できる。
Furthermore, a light shielding wall having a curved shape that covers the light emitting surface and is recessed toward the light source side is provided at an end of the case opening on the light source side in the longitudinal direction of the light guide, and guides the opening of the case. The other end of the light body in the longitudinal direction opposite to the light source is provided with a light shielding wall that covers the emission surface, and further, the wall surface is recessed toward the opening side of the light shielding wall in a direction away from the light source. An optical shape processing wall having a curved shape is provided.
According to the above configuration, it is possible to obtain a gradation-like illumination mode in which the width gradually decreases at both ends of the illumination pattern and the illuminance gradually decreases, and spatially along the linear illumination pattern with respect to the viewer You can impress with a wide spread. In addition, since the illumination pattern end is formed not by the light-shielding wall but by the light processing wall on the other end side, a high-quality illumination pattern in which the illumination pattern is balanced at both ends can be formed.
さらに、光源側の遮光壁の湾曲形状は光形状加工壁の湾曲形状よりも大きく湾曲し、光形状加工壁の先端の湾曲形状は、光源側の遮光壁の湾曲形状を導光体長手方向に縮小した形状としている。また開口の深さ方向において、光形状加工壁の先端は前記光源側の遮光壁よりも前記出射面から遠い開口側に配置されている、ことをさらなる特徴とする。
上記構成によれば、照明パターンの両端での均整がとれたより高品質な照明パターンを、より確実に形成できる。
Furthermore, the curved shape of the light shielding wall on the light source side is curved larger than the curved shape of the light shaping wall, and the curved shape at the tip of the light shaping wall is the curved shape of the light shielding wall on the light source side in the longitudinal direction of the light guide. Reduced shape. Further, in the depth direction of the opening, it is further characterized in that the tip of the optical shape processing wall is disposed on the opening side farther from the emission surface than the light shielding wall on the light source side.
According to the above configuration, it is possible to more reliably form a higher quality illumination pattern in which the illumination pattern is balanced at both ends.
さらに、ケースには穴が貫設され、穴は導光体の隣り合う溝と溝との間に位置するように配されたこと、を特徴とする。
上記構成によれば、導光体の溝により反射され外部に放射される光が、穴から漏れ出てしまうことを防止することができる。
穴は、特に限定されないが、壁部の内面にリフレクタに収容された導光体を係止するための係止突起が形成されている場合にリフレクタの樹脂成形時に係止突部がアンダーカットになっても型抜きできるようにするための抜き穴、リフレクタを肉抜きして軽量化するための抜き穴、リフレクタを固定するネジ等の固定手段を嵌挿するためのネジ穴、ケースに被係合物を固定又は位置決めするために嵌入する嵌入穴等を例示できる。
Further, the case is characterized in that a hole is provided in the case, and the hole is disposed between adjacent grooves of the light guide.
According to the said structure, it can prevent that the light reflected by the groove | channel of a light guide and radiated | emitted outside leaks out from a hole.
The hole is not particularly limited, but when the locking projection for locking the light guide housed in the reflector is formed on the inner surface of the wall, the locking projection is undercut when the reflector is molded with resin. Die hole for enabling die cutting, punch hole for lightening reflector to reduce weight, screw hole for inserting fixing means such as screws for fixing reflector, etc. For example, an insertion hole or the like to be inserted for fixing or positioning the compound can be exemplified.
前記端部側の光散乱部は、前記光源側の遮光壁と開口との境界から開口へ向かって少なくとも2mmの範囲を含み且つ最長でも10mmを超えない範囲に設けられていることが好ましい。
入射面側遮光壁と照射口との境界からの長さが2mm未満では受光面に生じる明暗の境界を暈す効果が弱くなり、この長さが10mmを超えると光が散乱される範囲が大きくなって、照明品質が低下するおそれがあるからである。
The light scattering portion on the end side is preferably provided in a range including at least 2 mm from the boundary between the light shielding wall on the light source side and the opening toward the opening and not exceeding 10 mm at the longest.
If the length from the boundary between the light-shielding wall on the incident surface side and the irradiation port is less than 2 mm, the effect of blurring the light / dark boundary generated on the light receiving surface is weakened. If this length exceeds 10 mm, the range in which light is scattered is large. This is because the illumination quality may be deteriorated.
さらに、入射面は、光入射時に光源の光軸を反射面側に屈折するよう、反射面と対向するように傾斜していること、および、入射面は、反射面と垂直な面に対して3〜7°傾斜していること、を特徴とする。
または、入射面は、光入射時に光源の光軸を出射面側に屈折するよう、出射面と対向するように傾斜していること、および、入射面は、光源の光軸に直交する面に対して3〜7°傾斜していること、を特徴とする。
上記構成によれば、光源の光が導光体内部でほとんど反射することなく導光体の他端側まで到達して、他端側から放射される光量が入射面側の光量よりも多くなる現象を防ぎ、導光体内部で反射させることで均一な線状光を得ることが可能となる。
Further, the incident surface is inclined so as to face the reflecting surface so that the optical axis of the light source is refracted to the reflecting surface side when light is incident, and the incident surface is perpendicular to the reflecting surface. It is characterized by being inclined by 3 to 7 °.
Alternatively, the incident surface is inclined so as to face the emission surface so that the optical axis of the light source is refracted toward the emission surface when light is incident, and the incident surface is a surface orthogonal to the optical axis of the light source. It is characterized by being inclined by 3 to 7 °.
According to the above configuration, the light from the light source reaches the other end side of the light guide with almost no reflection inside the light guide, and the amount of light emitted from the other end is larger than the amount of light on the incident surface side. It is possible to obtain uniform linear light by preventing the phenomenon and reflecting the light inside the light guide.
さらに、導光体の入射面に、光源から入射する光の量を制限する光入射制限部が設けられていること、を特徴とする。光入射制限部としては、入射面における光源の光軸と交差する領域の周囲が除去されたもの、光源の光の一部を遮光する遮光部材、等を例示できる。
上記構成によれば、光源から入射する光の量を制限することができ、導光体の長さに応じた光量を供給できる。
Furthermore, the light incident body is characterized in that a light incident restricting portion for restricting the amount of light incident from the light source is provided on the incident surface of the light guide. Examples of the light incident restricting unit include a member in which the periphery of the region intersecting the optical axis of the light source on the incident surface is removed, a light shielding member that shields part of the light from the light source, and the like.
According to the said structure, the quantity of the light which injects from a light source can be restrict | limited, and the light quantity according to the length of a light guide can be supplied.
本発明によれば、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる線状照明装置、とすることができる。   ADVANTAGE OF THE INVENTION According to this invention, it can be set as the linear illuminating device which can fix to an attachment member easily, can prevent an incorrect assembly | attachment, and can obtain a high quality illumination pattern.
本発明の線状照明装置を車室内照明に適用した概略図。Schematic which applied the linear illuminating device of this invention to vehicle interior lighting. 実施例1の線状照明装置の分解斜視図。FIG. 3 is an exploded perspective view of the linear illumination device according to the first embodiment. 同線状照明装置の長手方向での断面図。Sectional drawing in the longitudinal direction of the same linear illuminating device. 図3の光源側の拡大図。The enlarged view by the side of the light source of FIG. 図3の他端側の拡大図。The enlarged view of the other end side of FIG. 導光体の光散乱部とケースの反射面の位置関係を示す概略図。Schematic which shows the positional relationship of the light-scattering part of a light guide, and the reflective surface of a case. 図3のX−X断面図。XX sectional drawing of FIG. 実施例2の線状照明装置の長手方向での断面図。Sectional drawing in the longitudinal direction of the linear illuminating device of Example 2. FIG. 図8の光源側の拡大図。The enlarged view by the side of the light source of FIG. 図8の他端側の拡大図。The enlarged view of the other end side of FIG. 実施例3の線状照明装置の斜視図。The perspective view of the linear illuminating device of Example 3. FIG. 同線状照明装置の(a)正面図、(b)A−A断面図、(c)照明パターンの概略図。(A) Front view, (b) AA sectional view, (c) Schematic diagram of illumination pattern of the linear illumination device. 同線状照明装置の(a)B−B断面図、(b)C−C断面図。(A) BB sectional drawing of the same linear illuminating device, (b) CC sectional drawing. 同線状照明装置の車室内パネルへの配置例を示した概略図。Schematic which showed the example of arrangement | positioning to the vehicle interior panel of the linear lighting apparatus. 実施例4の線状照明装置の(a)正面図、(b)A−A断面図、(c)照明パターンの概略図。(A) Front view of the linear illuminating device of Example 4, (b) AA sectional drawing, (c) Schematic of the illumination pattern. 実施例5の線状照明装置の導光体の斜視図。The perspective view of the light guide of the linear illuminating device of Example 5. FIG. 同線状照明装置の(a)断面図、(b)b−b断面図、(c)c−c断面図、(d)d−d断面図。(A) sectional view, (b) bb sectional view, (c) cc sectional view, (d) dd sectional view of the linear illumination device. 導体体の変更例を示す(a)斜視図、(b)〜(d)断面図。The (a) perspective view which shows the example of a change of a conductor body, (b)-(d) sectional drawing. 穴の(a)変更例の断面図、(b)別の変更例の断面図。(A) Cross-sectional view of modified example of hole, (b) Cross-sectional view of another modified example.
本発明の線状照明装置について図を引用しながら説明する。
なお各図は説明のために各要素を簡略化して示したもので、実際の縮尺、大きさとは異なっている。
The linear illumination device of the present invention will be described with reference to the drawings.
Each figure shows each element in a simplified manner for explanation, and is different from an actual scale and size.
図1は本発明の線状照明装置を車室内照明に適用する場合の概略図である。本発明の線状照明装置1の用途として、室内天井に設けられる天井照明11、ドアトリムに設けられてアームレストやスイッチおよび/またはドア下部のポケット内部を照明するドアトリム照明12、インパネに車幅方向に延びて配置されてグローブボックス内部やインパネの操作部を照明するインパネ照明13、コンソールボックスやカップホルダを照明する収納照明14、足元を照明する足元照明15、などが例示できる。
なお、本発明は上記用途以外に適用しても良く、車室内照明に限らず車室外照明や、車以外の照明に適用しても良い。
FIG. 1 is a schematic view when the linear illumination device of the present invention is applied to vehicle interior illumination. Applications of the linear illumination device 1 of the present invention include a ceiling illumination 11 provided on an indoor ceiling, a door trim illumination 12 provided on a door trim to illuminate an armrest, a switch and / or a pocket under the door, and an instrument panel in the vehicle width direction. Examples include an instrument panel illumination 13 that extends and illuminates the inside of the glove box and the operation unit of the instrument panel, a storage illumination 14 that illuminates the console box and the cup holder, and a foot illumination 15 that illuminates the foot.
The present invention may be applied to applications other than those described above, and may be applied not only to vehicle interior lighting but also to vehicle exterior lighting and lighting other than vehicles.
実施例1の線状照明装置1について、図2〜7を引用して説明する。
図2は線状照明装置1の分解斜視図であり、線状照明装置1は、長尺の導光体2、光源3、およびこれらを収容するケース4、で構成される。なお、光源3には電力を供給するためのコネクタ(図示なし)が接続される。
The linear illumination device 1 of Example 1 will be described with reference to FIGS.
FIG. 2 is an exploded perspective view of the linear illumination device 1, and the linear illumination device 1 includes a long light guide 2, a light source 3, and a case 4 that accommodates these. The light source 3 is connected to a connector (not shown) for supplying power.
<導光体2>
導光体2は、細長く長尺な外形で、導光体長手方向に対する垂直断面は四角形をなし、透明樹脂により成形されている。導光体2は、導光体長手方向における端部に入射面21、長手方向に沿って平行な一側面に反射面22、長手方向に沿って反射面22と対向する一側面に出射面23、が設けられている。本実施例において、導光体2の長手方向の長さは500mm程度であり、四角形断面は一辺の長さが5mmの正方形である。長手方向における端部には入射面21と対向するよう光源3が配置され、光源3から放射されて導光体内部に入射した光を、長手方向に沿って導光体長手方向における光源3とは反対側の端部(他端部)まで導光する。導光された光は、反射面22により出射面23に向けて反射されることで出射面23から放射され、被照明物を線状に照明する。次に導光体2の各構成の詳細について説明する。
<Light guide 2>
The light guide 2 has a long and thin outer shape, and a vertical cross section with respect to the longitudinal direction of the light guide is a quadrangle, and is formed of a transparent resin. The light guide 2 has an incident surface 21 at an end in the longitudinal direction of the light guide, a reflective surface 22 on one side parallel to the longitudinal direction, and an exit surface 23 on one side facing the reflective surface 22 along the longitudinal direction. , Is provided. In the present embodiment, the length of the light guide 2 in the longitudinal direction is about 500 mm, and the square cross section is a square having a side length of 5 mm. The light source 3 is disposed at the end in the longitudinal direction so as to face the incident surface 21, and the light emitted from the light source 3 and incident on the inside of the light guide is separated from the light source 3 in the longitudinal direction of the light guide along the longitudinal direction. Guides light to the opposite end (other end). The guided light is reflected from the reflecting surface 22 toward the emitting surface 23 and is emitted from the emitting surface 23 to illuminate the object to be illuminated linearly. Next, the detail of each structure of the light guide 2 is demonstrated.
入射面21は、図4に示したよう、光入射時に光源3の光軸を反射面22側に屈折するよう、反射面22と対向するように傾斜している。光源3として指向性の高いLEDを用いた場合、光軸方向に多くの光が放射される。このため、入射面21が反射面22と垂直で、かつ光源3の光軸とも垂直な場合、光源3の光軸上の光がほぼ屈折せずに導光体内部に入射し、導光体内部でほとんど反射することなく導光体2の他端側まで到達する。この結果、他端側から放射される光量が入射面側の光量よりも多くなり、導光体から均一に線状に放射させることが困難であった。しかし入射面21を反射面22と対向するように傾斜させたことで、光の多くが反射面22側に屈折し、結果として、均一な線状光を得ることが可能となる。このような効果を得るには、導光体2の長さにもよるが、反射面22と垂直な面に対して入射面21の傾斜角θを3〜7度程度とすればよい。
また上記例では光源3の光軸が導光体長手方向に平行な場合について例示したが、入射面21を傾斜させるのではなく、その光軸が反射面と交差するように光源3自体を傾けて配置することとしてもよい。ただし光源自体を傾斜させる場合は、導光体2の長さに応じて傾斜角を調整する必要があるため、光源を取り付ける周辺部材を多数用意する必要が生じる。このため光源の向きを固定し、入射面21の傾斜角θのみを変更すれば、生産性が向上するため好ましい。
As shown in FIG. 4, the incident surface 21 is inclined so as to face the reflecting surface 22 so that the optical axis of the light source 3 is refracted toward the reflecting surface 22 when light is incident. When a highly directional LED is used as the light source 3, a lot of light is emitted in the optical axis direction. For this reason, when the incident surface 21 is perpendicular to the reflecting surface 22 and is also perpendicular to the optical axis of the light source 3, the light on the optical axis of the light source 3 is incident on the inside of the light guide without being refracted. It reaches the other end of the light guide 2 with almost no internal reflection. As a result, the amount of light radiated from the other end side is larger than the amount of light on the incident surface side, and it has been difficult to radiate uniformly from the light guide. However, by tilting the incident surface 21 so as to face the reflecting surface 22, most of the light is refracted toward the reflecting surface 22, and as a result, uniform linear light can be obtained. In order to obtain such an effect, although depending on the length of the light guide 2, the inclination angle θ of the incident surface 21 with respect to the surface perpendicular to the reflecting surface 22 may be set to about 3 to 7 degrees.
In the above example, the case where the optical axis of the light source 3 is parallel to the longitudinal direction of the light guide is illustrated, but the incident surface 21 is not inclined, but the light source 3 itself is inclined so that the optical axis intersects the reflecting surface. It is good also as arranging. However, when the light source itself is inclined, it is necessary to adjust the inclination angle according to the length of the light guide 2, and thus it is necessary to prepare a large number of peripheral members to which the light source is attached. For this reason, it is preferable to fix the direction of the light source and change only the inclination angle θ of the incident surface 21 because the productivity is improved.
反射面22は、導光体長手方向に沿う一側面であり、その表面には、導光体長手方向に沿った断面においてV字形状となる溝24が導光体長手方向に沿って等間隔に配列している。溝24の入射面21と対向する面は、入射面21より導光してきた光を別の側面に向けて反射・散乱する機能を有し、その溝の深さは入射面21から離れるほど深くなるように構成されている。
溝24は、図4(a)のように入射面21とは反対側の面が垂直であるV字形状でもよいし、(b)のように入射面21とは反対側の面が入射面21と対向する面とは逆方向に傾斜したV字形状でもよいし、(c)のように入射面21と対向する面が1/4円であり、入射面21とは反対側の面が垂直であるV字形状でもよい。さらに、溝24は、(d)のように垂直面部を含むU字形状でもよいし、(e)のように半円形状をなすU字形状でもよいし、(f)のように半楕円形状をなすU字形状でもよい。
導光体長手方向における入射面21とは反対側の端部(他端部)側の反射面22には、V字状の溝24ではなく、階段状の切り欠き(ステップ)25が形成されている。本実施例においては切り欠き25も反射機能を奏するように、入射面21と対向する面が出射面23と対向するように傾斜している。また溝24による反射光と切り欠き25による反射光とが異なる照明パターンにならないよう、入射面21と対向する溝24・切り欠き25の夫々の面が相似形状となるように構成されている。こうすることで、夫々の面による反射光の照明パターンまでもが相似となり、他端側で照明パターンが変わってしまうことを防止できる。さらに図5に示したよう、隣り合う溝24同士の間隔Aと、切り欠き25と隣り合う溝24との間隔Bとが、同じになるように配置している。この結果、溝24・切り欠き25の夫々の反射面による照明パターンが等間隔に配列することとなり、線状の照明パターンの全体にわたって高品質な照明態様を得ることが可能となる。
さらに切り欠き25は、後述のよう、ケース4に対する誤組付け防止用の勘合部として用いることができ、生産性が向上する。
The reflecting surface 22 is a side surface along the longitudinal direction of the light guide, and grooves 24 that are V-shaped in a cross section along the longitudinal direction of the light guide are equidistant along the longitudinal direction of the light guide. Are arranged. The surface facing the incident surface 21 of the groove 24 has a function of reflecting and scattering light guided from the incident surface 21 toward another side surface, and the depth of the groove becomes deeper as the distance from the incident surface 21 increases. It is comprised so that it may become.
The groove 24 may have a V shape in which the surface opposite to the incident surface 21 is vertical as shown in FIG. 4A, or the surface opposite to the incident surface 21 as shown in FIG. 4B. 21 may be V-shaped inclined in the opposite direction to the surface facing the surface 21, and the surface facing the incident surface 21 is a ¼ circle as shown in (c), and the surface opposite to the incident surface 21 is It may be V-shaped which is vertical. Further, the groove 24 may have a U-shape including a vertical surface portion as shown in (d), a U-shape having a semicircular shape as shown in (e), or a semi-elliptical shape as shown in (f). A U-shape may be used.
A stepped notch (step) 25 is formed on the reflecting surface 22 on the end (other end) side opposite to the incident surface 21 in the longitudinal direction of the light guide, instead of the V-shaped groove 24. ing. In this embodiment, the notch 25 is inclined so that the surface facing the entrance surface 21 faces the exit surface 23 so that the notch 25 also has a reflecting function. Further, the surfaces of the groove 24 and the notch 25 facing the incident surface 21 are configured to have similar shapes so that the reflected light from the groove 24 and the reflected light from the notch 25 do not have different illumination patterns. By doing so, the illumination patterns of the reflected light from the respective surfaces are similar, and the illumination pattern can be prevented from changing on the other end side. Further, as shown in FIG. 5, the interval A between the adjacent grooves 24 and the interval B between the notch 25 and the adjacent groove 24 are arranged to be the same. As a result, the illumination patterns formed by the reflecting surfaces of the grooves 24 and the notches 25 are arranged at equal intervals, and a high-quality illumination mode can be obtained over the entire linear illumination pattern.
Furthermore, the notch 25 can be used as a fitting portion for preventing erroneous assembly with respect to the case 4 as will be described later, which improves productivity.
出射面23は、導光体長尺方向に沿って、反射面22と対向する一側面である。出射面23における光源側のケース4と対向する領域には、凹凸による光散乱部26が設けられている。出射面23とケース4が近接しているとケース4による遮光・反射が顕著となり、明暗差や反射光による輝線として照明パターンが乱されてしまう。特に導光体を使用した線状照明装置の場合、入射面側と他端側の両端部でこのような問題が生じうる。このため、ケース4近傍の導光体2の出射面23に光散乱部26を設けることで、ケース4によって遮光・反射されうる光を意図的に乱し、全体として高品質な照明パターンを得ることができる。図4・6に示したように光散乱部26は、光源3側の端部がケース4の端部(後述の遮光壁41)と対向するように設けられる。このようにすることで、製造誤差により光散乱部26とケース4との位置がずれ、光散乱部26が形成されていない領域にケース4の端部が位置してしまうことを防止できる。また、ケース4と対向する領域よりも光源3側まで光散乱部26を設けると、光が導光体2から漏れ出てしまう。このため光散乱部26の端部が、ケース4の端部(遮光壁41)と対向するように形成することが望ましい。
なお光散乱部26の形状としては、本実施例の凹凸形状に限らず、光散乱効果のある層やフィルムの印刷・貼り付けなどでも良い。しかし導光体成形時に一体成形できるため、導光体自身に凹凸形状を設けることが好ましい。
The emission surface 23 is one side surface facing the reflection surface 22 along the light guide body longitudinal direction. In the region of the emission surface 23 facing the light source side case 4, a light scattering portion 26 is provided by unevenness. If the exit surface 23 and the case 4 are close to each other, the light shielding / reflection by the case 4 becomes remarkable, and the illumination pattern is disturbed as a bright line due to a light / dark difference or reflected light. In particular, in the case of a linear illumination device using a light guide, such a problem may occur at both ends on the incident surface side and the other end side. For this reason, by providing the light scattering portion 26 on the exit surface 23 of the light guide 2 in the vicinity of the case 4, the light that can be blocked or reflected by the case 4 is intentionally disturbed to obtain a high-quality illumination pattern as a whole. be able to. As shown in FIGS. 4 and 6, the light scattering portion 26 is provided so that the end portion on the light source 3 side faces the end portion of the case 4 (light shielding wall 41 described later). By doing in this way, it can prevent that the position of the light-scattering part 26 and the case 4 shifts | deviates by a manufacturing error, and the edge part of the case 4 is located in the area | region in which the light-scattering part 26 is not formed. Further, if the light scattering portion 26 is provided from the region facing the case 4 to the light source 3 side, light leaks from the light guide 2. For this reason, it is desirable to form the end portion of the light scattering portion 26 so as to face the end portion of the case 4 (light shielding wall 41).
The shape of the light scattering portion 26 is not limited to the concavo-convex shape of the present embodiment, and a layer or film having a light scattering effect may be printed or pasted. However, since the light guide can be integrally formed at the time of forming the light guide, it is preferable that the light guide itself is provided with an uneven shape.
<光源3>
光源3はLEDからなり、その光軸が導光体長手方向に沿って平行となるように配置されている。光源としてバルブなどの電球も採用できるが、本発明に用いる光源は線状照明のために長手方向に遠方まで光を供給する必要があるため、全方向に放射状に光を放射する電球はあまり好ましくない。指向性の高いLEDであれば、光軸方向に光の大部分を放射できるため、本発明の線状照明装置1に好適に用いることができる。このようなLEDの形態としては、砲弾型、表面実装型(トップビュー)、側面実装型(サイドビュー)、COB(チップオンボード)、などをその大きさや所望の特性に応じて適宜採用することができる。なお光源3には図示しないコネクタが接続されており、これにより電力供給される。
<Light source 3>
The light source 3 consists of LED, and is arrange | positioned so that the optical axis may become parallel along a light guide longitudinal direction. A bulb or the like can also be used as the light source, but the light source used in the present invention needs to supply light far in the longitudinal direction for linear illumination, so a light bulb that emits light radially in all directions is less preferred. Absent. If it is LED with high directivity, since most of light can be radiated | emitted to an optical axis direction, it can be used suitably for the linear illuminating device 1 of this invention. As a form of such LED, a bullet type, a surface mount type (top view), a side mount type (side view), a COB (chip on board), etc. should be appropriately adopted according to its size and desired characteristics. Can do. Note that a connector (not shown) is connected to the light source 3 so that power is supplied.
<ケース4>
ケース4は長尺の箱体からなり、長手方向に沿った一側面が開口し、その内部に導光体2と光源3が収容される。このケース4は樹脂の射出成形により形成することができる。樹脂成形することで軽量化することができ、車室内照明に好適に採用することができる。
<Case 4>
The case 4 is formed of a long box, and one side surface along the longitudinal direction is opened, and the light guide 2 and the light source 3 are accommodated therein. The case 4 can be formed by resin injection molding. It can be reduced in weight by resin molding and can be suitably used for vehicle interior lighting.
図4に示したよう、長手方向の光源側において、導光体2の出射面23と対向する部分には、光源3から導光体2に入射しなかった光が漏れないよう、遮光壁41が設けられている。光漏れを防止すべく、遮光壁41はその先端が導光体2の光出射面23と対向するよう近接して配置されており、上述のよう出射面23にはその一部が遮光壁41と対向するように光散乱部26が形成されている。これにより遮光壁41による照射パターンへの影響を抑制しつつ、照射パターンを輝度ムラがない均一なパターンとすることができる。また遮光壁41はケース4の開口に向けて傾斜することで反射面42として機能し、出射面23および光散乱部26から放射された光を、被照明物に向けて反射することができる。これにより光散乱部26による光散乱効果とあわせて、遮光壁近傍での光量を増やすことができる。   As shown in FIG. 4, on the light source side in the longitudinal direction, the light shielding wall 41 prevents the light that has not entered the light guide 2 from the light source 3 from leaking into the portion facing the emission surface 23 of the light guide 2. Is provided. In order to prevent light leakage, the light shielding wall 41 is disposed so that the tip thereof faces the light emitting surface 23 of the light guide 2, and a part of the light shielding wall 41 is disposed on the light emitting surface 23 as described above. A light scattering portion 26 is formed so as to oppose. Thereby, it is possible to make the irradiation pattern a uniform pattern without luminance unevenness while suppressing the influence of the light shielding wall 41 on the irradiation pattern. In addition, the light shielding wall 41 functions as the reflecting surface 42 by being inclined toward the opening of the case 4, and can reflect the light emitted from the emitting surface 23 and the light scattering portion 26 toward the object to be illuminated. Thereby, the light quantity in the vicinity of the light shielding wall can be increased together with the light scattering effect by the light scattering portion 26.
光源側とは反対側の長手方向の端部(他端部)において、ケース4の内面は開口に向けて光反射するように傾斜し、反射面43として機能する。これにより遮光壁41と同様に、光照射パターンの長手方向端部における明暗差を低減できる。またこの反射面43と対向する導光体2の端部(端面29)には凹凸形状の光散乱部27が設けられており、端部に到達した光を積極的に導光体外部に放射できる。よって光散乱部27と反射面43の組み合わせによって、光源3とは反対側の長手方向端部(他端部)側の光量を増加させることができる。   At the end portion (the other end portion) in the longitudinal direction opposite to the light source side, the inner surface of the case 4 is inclined so as to reflect light toward the opening and functions as the reflecting surface 43. Thereby, similarly to the light shielding wall 41, the light / dark difference in the longitudinal direction end of the light irradiation pattern can be reduced. In addition, an uneven light scattering portion 27 is provided at the end portion (end surface 29) of the light guide 2 facing the reflecting surface 43, and the light reaching the end portion is actively radiated to the outside of the light guide. it can. Therefore, the combination of the light scattering portion 27 and the reflection surface 43 can increase the amount of light on the end portion in the longitudinal direction (other end portion) opposite to the light source 3.
さらに、ケース4の長手方向における光源3とは反対側の端部には、導光体2の切り欠き25に向かって突出する突部44が形成されている。突部44は、線状照明装置1を組み立てた状態において、切り欠き25内に位置するように形成される。このように構成することで、導光体2が異なる向きで取り付けられた場合、突部44と導光体2が干渉して誤組付けを認識できるようになる。またこのような構造体をケース4内の端部に設けたことで、導光体2の光学的性質に影響を及ぼすことを抑制できる。   Furthermore, a protrusion 44 that protrudes toward the notch 25 of the light guide 2 is formed at the end of the case 4 opposite to the light source 3 in the longitudinal direction. The protrusion 44 is formed so as to be positioned in the notch 25 in a state where the linear lighting device 1 is assembled. By comprising in this way, when the light guide 2 is attached in a different direction, the protrusion 44 and the light guide 2 interfere with each other so that erroneous assembly can be recognized. Further, by providing such a structure at the end in the case 4, it is possible to suppress the influence on the optical properties of the light guide 2.
次にケース4の内部に導光体2を固定・保持する構成について説明する。図7に、線状照明装置1の長手方向に対する垂直断面(X−X断面図)を示す。該断面において、ケース4は一方が開口して両側面と底面とを有する断面コ字状であり、導光体2の出射面23を支持するようにケース4の側面内面から固定部45が突出している。この固定部45は、導光体2の溝24により反射され外部に放射される光を遮光しないよう、隣り合う2つの溝24の間に位置するように配置される。
一方、ケース4の側面から突出する固定部45を樹脂射出成形する場合、固定部45がアンダーカットとなってしまい成形性が低下する。このため、固定部45から底面にかけて、側面と底面に非成形部(穴)46を設けることで、射出成形による成形性が向上する。この場合、穴となる非成形部46から光が漏れてしまうことを防止すべく、非成形部46についても固定部45と同様に、隣り合う溝24の間に位置するように形成することが好ましい。
以上の構成により、溝24で反射し光学制御された光が固定部45により乱れ、および/または、非成形部46から漏れてしまうことを防止でき、ケース4による照射パターンの乱れや光の損失を抑制することができる。
Next, a configuration for fixing and holding the light guide 2 inside the case 4 will be described. In FIG. 7, the perpendicular | vertical cross section (XX sectional drawing) with respect to the longitudinal direction of the linear illuminating device 1 is shown. In the cross section, the case 4 is U-shaped in cross section with one side open and both side surfaces and a bottom surface, and the fixing portion 45 protrudes from the inner surface of the side surface of the case 4 so as to support the emission surface 23 of the light guide 2. ing. The fixing portion 45 is disposed so as to be positioned between two adjacent grooves 24 so as not to block light reflected by the grooves 24 of the light guide 2 and radiated to the outside.
On the other hand, when the fixing part 45 protruding from the side surface of the case 4 is molded by resin injection, the fixing part 45 becomes undercut and the moldability deteriorates. For this reason, the moldability by injection molding improves by providing the non-molding part (hole) 46 in the side and bottom from the fixed part 45 to the bottom. In this case, in order to prevent light from leaking from the non-molded portion 46 serving as a hole, the non-molded portion 46 may be formed so as to be positioned between the adjacent grooves 24 in the same manner as the fixed portion 45. preferable.
With the above configuration, it is possible to prevent the light reflected by the groove 24 and optically controlled from being disturbed by the fixing portion 45 and / or leaking from the non-molded portion 46, and the irradiation pattern is disturbed by the case 4 and the light is lost. Can be suppressed.
上述の構成によれば、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる線状照明装置、とすることができる。   According to the above-described configuration, it is possible to provide a linear illumination device that can be easily fixed to the attachment member, prevent erroneous assembly, and obtain a high-quality illumination pattern.
実施例2の線状照明装置1’について、図8〜10を引用して説明する。
なお実施例1と同様な部分については、同様の符号を付し、説明を省略する。
A linear illumination device 1 ′ of Example 2 will be described with reference to FIGS.
In addition, about the part similar to Example 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.
図8は線状照明装置1’の長手方向に沿った断面図であり、線状照明装置1’は、長尺の導光体2’、光源3、およびこれらを収容するケース4’、で構成される。なお、光源3は実施例1と同様である。線状照明装置1’は、ケース4’の光源側に挿入穴47が形成され、導光体2’・光源3がこの順に挿入穴47からケース4’内に挿入されて固定される。   FIG. 8 is a cross-sectional view along the longitudinal direction of the linear illumination device 1 ′. The linear illumination device 1 ′ includes a long light guide 2 ′, a light source 3, and a case 4 ′ that accommodates these. Composed. The light source 3 is the same as that in the first embodiment. In the linear illumination device 1 ′, an insertion hole 47 is formed on the light source side of the case 4 ′, and the light guide 2 ′ and the light source 3 are inserted into the case 4 ′ from the insertion hole 47 in this order and fixed.
図9は、線状照明装置1’の長手方向における光源側の拡大断面図である。実施例1と異なり、導光体2’の入射面21は、光源3の光軸と交差する領域の周囲が除去され、光入射制限部28が設けられている。これにより光源3から入射する光の量を制限することができる。本発明の線状照明装置は様々な部位に設けることができるが、その用途・部位に応じて長さを調整する必要がある。このため光源3を共通化した場合、光源3から放射される光量に対して線状照明装置から放射される照度は、線状照明装置の長さが長くなるほど低下してしまう。そこで、入射面21に光入射制限部28を設けることで、導光体2’の長さに応じた光量を供給できるようにしている。
本実施例においては、光源3の光軸に沿うように傾斜させ、光源3の光が傾斜面から直接入射しにくいようにすることで光入射制限部28としたが、このような傾斜面に限らず、光源3の光の一部を遮光する遮光部材を設けても良い。この場合は入射面21の一部を覆うように導光体2’に直接遮光部材を形成しても良く、またはケース4’から入射面21と光源3との間に突出するような壁を設けることとしても良い。
FIG. 9 is an enlarged cross-sectional view on the light source side in the longitudinal direction of the linear illumination device 1 ′. Unlike the first embodiment, the light incident surface 21 of the light guide 2 ′ is removed from the periphery of the region intersecting the optical axis of the light source 3, and a light incident limiting portion 28 is provided. Thereby, the amount of light incident from the light source 3 can be limited. Although the linear lighting device of the present invention can be provided in various parts, it is necessary to adjust the length according to the application and part. For this reason, when the light source 3 is shared, the illuminance radiated from the linear illumination device with respect to the amount of light emitted from the light source 3 decreases as the length of the linear illumination device increases. In view of this, the light incident limiting portion 28 is provided on the incident surface 21 so that the amount of light corresponding to the length of the light guide 2 ′ can be supplied.
In the present embodiment, the light incident restriction unit 28 is formed by inclining along the optical axis of the light source 3 so that the light from the light source 3 is not easily incident directly from the inclined surface. Not limited to this, a light shielding member that shields part of the light from the light source 3 may be provided. In this case, a light shielding member may be directly formed on the light guide 2 ′ so as to cover a part of the incident surface 21, or a wall protruding between the incident surface 21 and the light source 3 from the case 4 ′. It may be provided.
図10は、線状照明装置1’の長手方向における光源3とは反対側の端部(他端部)における拡大断面図である。本実施例では実施例1とは異なり、光源3側のみならず、該端部(他端部)においてもケース4’に遮光壁41’、導光体2’の出射面23に光散乱部26’、が設けられている。これにより、光源3とは反対側の端部(他端部)から放射される光が、被照明物に照射されることを防止できる。該端部から放射される光は、溝24により反射され出射面23から放射される光とは様相が異なる。実施例1においてはこの光を有効利用して光量を増やす例を示したが、被照明領域を均一に照明する用途においては、該端部から放射される光を利用しないほうが、光学制御が簡単となり好ましい。このため遮光壁41’により、該端部から放射された光が外部に漏れないように閉じ込めることで、均一な照明パターンを得ることができる。さらに光源3側の遮光壁41と同様に、遮光壁41’が出射面23と近接することで明暗差が生じやすくなってしまうため、この遮光壁41’と対向する領域に光散乱部26’を設けることが好ましい。この場合の光散乱部26’は、長手方向における他端部側の端部のみが遮光壁41’と対向するように設けることで構成できる。
また本実施例では遮光壁41’を設けたため、導光体2の切り欠き25’の光源側の側面は、光を反射しにくいように傾斜させておらず、導光体長手方向に略垂直となるようにしている。
FIG. 10 is an enlarged cross-sectional view of the end portion (the other end portion) opposite to the light source 3 in the longitudinal direction of the linear illumination device 1 ′. In the present embodiment, unlike the first embodiment, not only the light source 3 side but also the end portion (the other end portion) includes a light shielding wall 41 ′ on the case 4 ′ and a light scattering portion on the exit surface 23 of the light guide 2 ′. 26 '. Thereby, it can prevent that the light radiated | emitted from the edge part (other end part) on the opposite side to the light source 3 is irradiated to a to-be-illuminated object. The light emitted from the end portion is different from the light reflected from the groove 24 and emitted from the emission surface 23. In the first embodiment, an example in which the amount of light is increased by effectively using this light has been shown. However, in the application where the illuminated area is uniformly illuminated, it is easier to control the optical system by not using the light emitted from the end portion. It is preferable. For this reason, a uniform illumination pattern can be obtained by confining the light emitted from the end portion so as not to leak outside by the light shielding wall 41 ′. Further, similarly to the light shielding wall 41 on the light source 3 side, since the light shielding wall 41 ′ is close to the emission surface 23, a light / dark difference is likely to occur, and thus the light scattering portion 26 ′ is formed in a region facing the light shielding wall 41 ′. Is preferably provided. In this case, the light scattering portion 26 'can be configured by providing only the end portion on the other end side in the longitudinal direction so as to face the light shielding wall 41'.
In the present embodiment, since the light shielding wall 41 ′ is provided, the side surface on the light source side of the notch 25 ′ of the light guide 2 is not inclined so as to hardly reflect light, and is substantially perpendicular to the longitudinal direction of the light guide. It is trying to become.
本実施例において突部44’は、導光体2の切り欠き25’に向けて突出する壁としている。これにより、実施例1の階段状の突部44と比べて、材料使用量を抑えることで軽量化できる。またケース4の厚肉の部分が少なくなることで、射出成形時のヒケなどを防止でき生産性が向上する。またこのような形状であっても、導光体2を挿入穴47から誤った向きで挿入した際に、突部44’と導光体2の切り欠き25’が形成されていない部分とが互いに干渉し、誤組付けを防止できる。突部44’(44)の形状は、上述の誤挿入を防止できる形状であれば、特に限定されない。   In this embodiment, the protrusion 44 ′ is a wall protruding toward the notch 25 ′ of the light guide 2. Thereby, compared with the step-shaped protrusion 44 of Example 1, it can reduce in weight by restraining material usage-amount. Further, since the thick portion of the case 4 is reduced, sink marks and the like at the time of injection molding can be prevented and productivity is improved. Even in such a shape, when the light guide 2 is inserted in the wrong direction from the insertion hole 47, the protrusion 44 ′ and the portion where the notch 25 ′ of the light guide 2 is not formed are formed. They can interfere with each other and prevent incorrect assembly. The shape of the protrusion 44 ′ (44) is not particularly limited as long as it can prevent the above-described erroneous insertion.
実施例2の構成によっても、実施例1と同様に、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる線状照明装置、とすることができる。   According to the configuration of the second embodiment, similarly to the first embodiment, it is possible to provide a linear lighting device that can be easily fixed to the mounting member, can prevent erroneous assembly, and can provide a high-quality lighting pattern. .
実施例3の線状照明装置1について、図11〜14を引用して説明する。
なお実施例1と同様な部分については、同様の符号を付し、説明を省略する。説明のため、導光体2がケース4から露出している領域、すなわち光が放射される発光領域にハッチングを付している。
The linear illumination device 1 of Example 3 will be described with reference to FIGS.
In addition, about the part similar to Example 1, the same code | symbol is attached | subjected and description is abbreviate | omitted. For the sake of explanation, a region where the light guide 2 is exposed from the case 4, that is, a light emitting region where light is emitted is hatched.
図12に示したように、開口の長手方向における光源3側の端部において、ケース4の導光体2の出射面23と対向する部分には、光源3から導光体2に入射しなかった光が漏れないよう、出射面23を覆う遮光壁41が設けられている。ケース4と導光体2の隙間からの光漏れを防止すべく、遮光壁41は少なくともその先端が導光体2の光出射面23と対向するよう近接して配置されている。また遮光壁41は、その先端が光源3側に向かって凹んだ湾曲形状とされ、出射面23から放射される光を湾曲状に遮光する。これにより被照明物を照らす照明パターンの光源3側の端部を湾曲させることができる。
また導光体2の出射面23の垂線方向において遮光壁41よりも開口側には、遮光壁41により湾曲状に形成される照明パターンを遮光・反射して乱さないように、遮光壁41の湾曲状の先端よりも奥まった位置、すなわち長手方向における遮光壁41の先端よりも光源3側に位置するように光源側壁部48が形成されている。
As shown in FIG. 12, the light source 3 does not enter the light guide 2 from the light source 3 side of the case 4 at the end of the light source 3 in the longitudinal direction of the opening. A light shielding wall 41 is provided to cover the emission surface 23 so that the light does not leak. In order to prevent light leakage from the gap between the case 4 and the light guide 2, the light shielding wall 41 is disposed so that at least the tip thereof faces the light emitting surface 23 of the light guide 2. Further, the light shielding wall 41 has a curved shape in which the tip is recessed toward the light source 3 side, and shields light emitted from the emission surface 23 in a curved shape. Thereby, the edge part by the side of the light source 3 of the illumination pattern which illuminates a to-be-illuminated object can be curved.
Further, in the direction perpendicular to the light exit surface 23 of the light guide 2, the light shielding wall 41 is provided on the opening side of the light shielding wall 41 so that the illumination pattern formed in a curved shape by the light shielding wall 41 is shielded and reflected and not disturbed. The light source side wall portion 48 is formed so as to be located on the light source 3 side with respect to the position deeper than the curved tip, that is, the tip of the light shielding wall 41 in the longitudinal direction.
さらに、開口の長手方向における光源3とは反対側(他端面29側)において、ケース4の導光体2の出射面23と対向する部分には、導光体2の他端面29付近から放射された光が漏れないよう、出射面23を覆う遮光壁49が設けられている。光源側の遮光壁41と同様に、ケース4と導光体2の隙間からの光漏れを防止すべく、遮光壁49は少なくともその先端が導光体2の光出射面23と対向するよう近接して配置されている。さらに遮光壁49は、導光体2に設けられた切り欠き25と、ケース4に設けられた突部44とを覆うように設けられている。
また導光体2の出射面23の垂線方向において、遮光壁49よりも開口側には、遮光壁49に対して略垂直な壁状の光形状加工壁50が設けられている。光形状加工壁50は、その壁面が光源3から離れる方向に向かって凹んだ湾曲形状とされ、出射面23から放射される光を湾曲状に遮光する。これにより被照明物を照らす照明パターンの他端側の端部を湾曲させることが出来る。
Further, on the side opposite to the light source 3 in the longitudinal direction of the opening (on the other end surface 29 side), the portion of the case 4 facing the emission surface 23 of the light guide 2 emits from the vicinity of the other end surface 29 of the light guide 2. A light shielding wall 49 is provided to cover the emission surface 23 so that the emitted light does not leak. Similar to the light-shielding wall 41 on the light source side, in order to prevent light leakage from the gap between the case 4 and the light guide 2, the light-shielding wall 49 is close so that at least the tip thereof faces the light emitting surface 23 of the light guide 2. Are arranged. Further, the light shielding wall 49 is provided so as to cover the notch 25 provided in the light guide 2 and the protrusion 44 provided in the case 4.
In addition, a wall-shaped optical shape processing wall 50 that is substantially perpendicular to the light shielding wall 49 is provided on the opening side of the light shielding wall 49 in the direction perpendicular to the emission surface 23 of the light guide 2. The optical shape processing wall 50 has a curved shape in which the wall surface is recessed in a direction away from the light source 3, and blocks light emitted from the emission surface 23 in a curved shape. Thereby, the edge part of the other end side of the illumination pattern which illuminates the to-be-illuminated object can be curved.
ここで本発明の遮光壁41・49と光形状加工壁50の作用について説明する。なお図12において、導光体2から放射される光線の概略を矢印X・Yで示し、線状照明装置1により形成される照明パターンのうち所定照度以上となる領域(照明パターンの外形・輪郭)をZで示した。また図12(a)〜(c)に付記した点線は、遮光壁41・49の先端のおおよその位置を示したものである。
導光体2の内部を導光する光は、光源3から離れる方向に導光していく。このため導光体2から放射される光は、反射面22の溝24により幾分かは光源3側に向かって反射されるものの、光の多くは光源3から離れる方向に出射面23から放射される。このため光源側の光線Xの光路(伝播距離)は、他端側の光線Yの光路よりも短い傾向があり、光は伝播中に放射状に拡散するため、光路の長い光線Y、すなわち他端側へ向かう光のほうが拡散しやすい傾向となる。このような光により形成される照明パターンは、図12(c)に示したよう、光源側よりも他端側が間延びした形状となり、照明パターンの輪郭がぼけ易くなる。
さらに導光体2から放射される光量は、光源側の遮光壁41の近傍よりも、他端側の遮光壁49の近傍のほうが多くなりやすい。このため、光源側の遮光壁41はその形状により照明パターンを所定形状に形成・加工しやすく、これと反対に、他端側の遮光壁49を光源側の遮光壁41と同様形状にしてもその照明パターンがぼけてしまい所定形状に形成し難く、光源側と他端側での照明パターンの均整がとりづらい。
Here, the operation of the light shielding walls 41 and 49 and the optical shape processing wall 50 of the present invention will be described. In FIG. 12, the outline of the light beam emitted from the light guide 2 is indicated by arrows X and Y, and the region of the illumination pattern formed by the linear illumination device 1 that has a predetermined illuminance or higher (outer shape / outline of the illumination pattern) ) Is indicated by Z. 12A to 12C show the approximate positions of the tips of the light shielding walls 41 and 49.
The light guided inside the light guide 2 is guided in a direction away from the light source 3. Therefore, although the light emitted from the light guide 2 is somewhat reflected toward the light source 3 by the groove 24 of the reflection surface 22, most of the light is emitted from the emission surface 23 in a direction away from the light source 3. Is done. For this reason, the optical path (propagation distance) of the light beam X on the light source side tends to be shorter than the optical path of the light beam Y on the other end side, and the light diffuses radially during propagation. Light toward the side tends to diffuse more easily. The illumination pattern formed by such light has a shape in which the other end side extends from the light source side as shown in FIG. 12C, and the outline of the illumination pattern is easily blurred.
Furthermore, the amount of light emitted from the light guide 2 is likely to increase more in the vicinity of the light shielding wall 49 on the other end side than in the vicinity of the light shielding wall 41 on the light source side. For this reason, the light-shielding wall 41 on the light source side is easy to form and process the illumination pattern into a predetermined shape depending on the shape, and conversely, the light-shielding wall 49 on the other end side has the same shape as the light-shielding wall 41 on the light source side. The illumination pattern is blurred and difficult to form in a predetermined shape, and it is difficult to balance the illumination pattern on the light source side and the other end side.
そこで本発明では、他端側において遮光壁49よりもさらに光源3から離れる方向に放射される光を利用すべく、遮光壁49の先端よりも光源3から離れた遠い位置に光形状加工壁50を設けた。さらに他端側の照明パターンの輪郭が光源側よりもぼけてしまうことを抑止すべく、ケース4の開口の深さ方向において、光源側の遮光壁41および他端側の遮光壁49よりも被照射物に近い位置となる光形状加工壁50の先端形状を利用して、照明パターンの他端側を形成することとした。これにより、他端側の照明パターンが過度に間延びして輪郭がぼやけてしまうことを抑止できる。また光形状加工壁50の壁面が、被照射部材に向かって伸びる立ち壁状でかつ凹状湾曲面とされていることで、光量の多い遮光壁49近傍の光に対して溝として機能し、他端側において光源側よりも照明パターンが過度にぼやけてしまうことを防ぐことが出来る。   Therefore, in the present invention, the optical shape processing wall 50 is disposed at a position farther from the light source 3 than the tip of the light shielding wall 49 in order to use light emitted in a direction further away from the light source 3 than the light shielding wall 49 on the other end side. Was provided. Furthermore, in order to prevent the outline of the illumination pattern on the other end side from being blurred more than the light source side, the light shielding side 41 and the light shielding wall 49 on the other end side are covered in the depth direction of the opening of the case 4. The other end side of the illumination pattern is formed using the tip shape of the optical shape processing wall 50 that is close to the irradiated object. Thereby, it can suppress that the illumination pattern on the other end side extends too much and the outline blurs. Further, the wall surface of the optical shape processing wall 50 is a standing wall shape extending toward the irradiated member and a concave curved surface, so that it functions as a groove for light in the vicinity of the light shielding wall 49 with a large amount of light. It is possible to prevent the illumination pattern from being excessively blurred on the end side than on the light source side.
さらに照明パターン全体での、特に照明パターンの両端部での均整をとるため、導光体2の出射面23の垂線方向において、光源側の遮光壁41を他端側の光形状加工壁50の先端よりも出射面23に近い位置に配置した。これにより被照射物との距離を、遮光壁41のほうが光形状加工壁50の先端よりも遠くすることができ、照明パターンの輪郭がぼけにくい光源側でも、光の拡散により輪郭をぼかすことが可能となる。
加えて、他端側の照明パターンが間延びすることを利用し、照明パターン両端部を形成する遮光壁41と光形状加工壁50とに設けられた湾曲形状は、遮光壁41のほうが光形状加工壁50よりも大きく湾曲するように構成している。これにより光形状加工壁50で遮光・形成された小さな湾曲形状が間延びし、光源側の照明パターンと均整をとることができる。光形状加工壁50による照明パターンは光形状加工壁50の先端形状が導光体長手方向に引き伸ばされることで形成されるため、光形状加工壁50の先端形状は、光源3側の遮光壁41を導光体長手方向に縮小した形状とすることが好ましい。これにより照明パターンの両端部の均整を容易に取ることができる。
Further, in order to balance the entire illumination pattern, particularly at both ends of the illumination pattern, the light shielding wall 41 on the light source side is connected to the light processing wall 50 on the other end side in the direction perpendicular to the exit surface 23 of the light guide 2. It arrange | positioned in the position near the output surface 23 rather than the front-end | tip. As a result, the distance from the object to be irradiated can be made farther on the light shielding wall 41 than on the tip of the optical shape processing wall 50, and even on the light source side where the contour of the illumination pattern is difficult to blur, the contour can be blurred by the diffusion of light. It becomes possible.
In addition, by utilizing the fact that the illumination pattern on the other end side extends, the curved shape provided on the light shielding wall 41 and the light shape processing wall 50 that form both ends of the illumination pattern is light shaped on the light shielding wall 41. It is configured so as to be curved larger than the wall 50. Thereby, the small curved shape light-shielded and formed by the optical shape processing wall 50 extends, and the illumination pattern on the light source side can be balanced. Since the illumination pattern by the optical shape processing wall 50 is formed by extending the tip shape of the optical shape processing wall 50 in the longitudinal direction of the light guide, the tip shape of the optical shape processing wall 50 is the light shielding wall 41 on the light source 3 side. Is preferably reduced in the longitudinal direction of the light guide. As a result, the both ends of the illumination pattern can be easily balanced.
このようにして形成された照明パターンは、線状照明装置1に沿って細長い線状を有し、その両端部が湾曲状をなすことで湾曲形状の先端(原点)に向かって短手方向の幅が漸減し、かつ湾曲形状の先端に向かってぼやけて照度が漸減するグラデーション調の照明態様とすることができる。このため観者に対して線状照明パターンに沿った空間的な広がりを印象付けることが出来る。
本実施例においては、光源3側の遮光壁41の先端形状と、他端側の光形状加工壁50の先端形状とが湾曲状である場合について例示したが、上述のよう照明パターンの短手方向の幅を漸減させることができる形状であれば良い。このような形状の例として放物状、楕円状、円弧状などの曲線や、直線を組み合わせることで構成した湾曲形状とすることができる。
The illumination pattern formed in this way has an elongated linear shape along the linear illumination device 1, and both ends thereof are curved so that the direction of the short side is directed toward the distal end (origin) of the curved shape. A gradation-like illumination mode in which the width gradually decreases and the illuminance gradually decreases in a blurred manner toward the tip of the curved shape can be obtained. Therefore, it is possible to impress the viewer with a spatial spread along the linear illumination pattern.
In the present embodiment, the case where the distal end shape of the light shielding wall 41 on the light source 3 side and the distal end shape of the optical shape processing wall 50 on the other end side are curved is illustrated, but the short illumination pattern as described above. Any shape that can gradually reduce the width in the direction may be used. Examples of such a shape can be a curved shape configured by combining curves such as a parabola, an ellipse, an arc, or a straight line.
上述のほか、ケース4には、導光体2の他端面29よりも光源3側に位置し、導光体2の切り欠き25に向かって突出する突部44が形成されている。図12(b)に示したよう、突部44は、線状照明装置1を組み立てた状態において、切り欠き25内に位置するように形成される。このように構成することで、導光体2が異なる向きで取り付けられた場合、突部44と導光体2の他端面29が干渉することで誤組付けを認識できるようになる。またこのような構造体をケース4内の端部に設けたことで、導光体2の光学的性質に影響を及ぼすことを抑制できる。   In addition to the above, the case 4 is formed with a protrusion 44 that is located closer to the light source 3 than the other end surface 29 of the light guide 2 and protrudes toward the notch 25 of the light guide 2. As shown in FIG. 12B, the protrusion 44 is formed so as to be positioned in the notch 25 in a state where the linear lighting device 1 is assembled. By configuring in this way, when the light guide 2 is attached in different directions, the misassembly can be recognized by the interference between the protrusion 44 and the other end surface 29 of the light guide 2. Further, by providing such a structure at the end in the case 4, it is possible to suppress the influence on the optical properties of the light guide 2.
また導光体2の他端面29まで到達した光は、他端面29で反射したり他端面29から放射された後にケース4によって反射されることで光拡散して迷光となり、照明パターンが乱れてしまう悪影響を及ぼしやすい。このため本実施例においては、他端側に他端面29と出射面23の一部を覆う遮光壁49を設けることで、このような迷光が線状照明装置1の外部に放射されることを防止している。さらに導光体2に設けた切り欠き25やケース4の突部44によっても迷光が生じてしてしまうため、遮光壁49を切り欠き25と突部44をも覆うように設けることで、迷光をより確実に遮光することができる。
この遮光効果を確実に得る為、遮光壁49の先端形状は光形状加工壁50や光源3側の遮光壁41のように湾曲させず、直線状としている。このようにしても、前述のように他端側において照明パターンを形成する主体が光形状加工壁50であることから、照明パターンの形状に与える影響を最小化できる。なお他端面29および切り欠き25、突部44による迷光を十分に遮光できれば、例えば遮光壁49の形状を光形状加工壁50と相似形状としても構わない。
Further, the light reaching the other end surface 29 of the light guide 2 is reflected by the other end surface 29 or radiated from the other end surface 29 and then reflected by the case 4 to diffuse light and become stray light, which disturbs the illumination pattern. It is easy to have an adverse effect. For this reason, in the present embodiment, the stray light is radiated to the outside of the linear illumination device 1 by providing the light shielding wall 49 covering the other end surface 29 and a part of the emission surface 23 on the other end side. It is preventing. Furthermore, stray light is also generated by the notch 25 provided in the light guide 2 and the protrusion 44 of the case 4. Therefore, the stray light is provided by providing the light shielding wall 49 so as to cover the notch 25 and the protrusion 44. Can be shielded more reliably.
In order to reliably obtain this light shielding effect, the tip shape of the light shielding wall 49 is not curved like the light shaping wall 50 or the light shielding wall 41 on the light source 3 side, but is linear. Even if it does in this way, since the main body which forms an illumination pattern in the other end side is the optical shape processing wall 50 as mentioned above, the influence which it has on the shape of an illumination pattern can be minimized. For example, the shape of the light shielding wall 49 may be similar to that of the optical shape processing wall 50 as long as stray light from the other end surface 29, the notch 25, and the protrusion 44 can be sufficiently shielded.
以上のように構成された線状照明装置1を車室内パネル5の裏面に取り付けた例を図14に示す。導光体2を保持するケース4の底面の背後から、ネジ固定用のリブが突設しており、車室内パネル5にネジにより固定される。なお図14(a)は裏面側からみた斜視図であり、ネジ固定用のリブ近傍での断面図も併せて示している。図14(b)は該ネジを含む面での断面図である。   An example in which the linear illumination device 1 configured as described above is attached to the back surface of the vehicle interior panel 5 is shown in FIG. A screw fixing rib protrudes from behind the bottom surface of the case 4 holding the light guide 2 and is fixed to the vehicle interior panel 5 with a screw. FIG. 14A is a perspective view seen from the back side, and also shows a cross-sectional view in the vicinity of a screw fixing rib. FIG. 14B is a cross-sectional view of the surface including the screw.
車室内空間は乗員に触れられるため曲面で構成され、線状照明装置1が取り付けられる車室内パネル5は傾斜状となる場合が多い。従って、この傾斜した車室内パネル5に対して線状照明装置1を取り付ける必要がある。ここで線状照明装置1の光源3にはハーネス32が接続され、またハーネス32は配線作業を容易にするため車室内パネル5に沿って取り回しされるため、光源3とハーネス32の延設方向やハーネス32を光源3に接続するための接続方向、および車室内パネル5の形状に沿うように光源3の長手方向を設置することで、組み付け状態において全体として小型化することができる。   The vehicle interior space is configured by a curved surface because it can be touched by passengers, and the vehicle interior panel 5 to which the linear illumination device 1 is attached is often inclined. Accordingly, it is necessary to attach the linear illumination device 1 to the inclined vehicle interior panel 5. Here, a harness 32 is connected to the light source 3 of the linear illumination device 1, and the harness 32 is routed along the vehicle interior panel 5 in order to facilitate wiring work. Further, by installing the connection direction for connecting the harness 32 to the light source 3 and the longitudinal direction of the light source 3 so as to follow the shape of the vehicle interior panel 5, the overall size can be reduced in the assembled state.
さらに所定領域を照明すべく、線状照明装置1から放射される光軸方向も調整する必要があるため、特に本実施例で例示した断面四角形状の導光体2を用いる場合は、出射面23を所定領域に向けて配置することで光の放射方向を調整する必要がある。このため断面四角形状の導光体2の向きと、上述のよう傾斜させて配置した光源3の長手方向または短手方向とを合わせることが困難な場合がある。そこで本発明では図14(b)に示したよう、導光体2を光源3の長手方向に対し略45度ほど回転させて取り付け、かつ導光体2を収容するよう断面コ字状をなす両側面と底面と、さらには車室内パネル5に取り付けるためのネジ固定用のリブとが、線状照明装置1の長手方向から視認した際に光源3の外形から飛び出ないよう構成した。これにより線状照明装置1を全体としてコンパクトに構成することができ、かつ光を所定方向に放射することが可能である。なお所定の照明パターンを得るべくケース4の両側面を大きくしてケース機能を高める場合には、該両側面のみを光源3の外形からはみ出るように構成することで、線状照明装置1の肥大化を最小限に留めることができる。   Furthermore, in order to illuminate a predetermined region, it is necessary to adjust the direction of the optical axis emitted from the linear illumination device 1, and therefore, particularly when the light guide 2 having a quadrangular cross section exemplified in this embodiment is used, the exit surface It is necessary to adjust the radiation direction of light by arranging 23 toward a predetermined area. For this reason, it may be difficult to match the direction of the light guide body 2 having a quadrangular cross section with the longitudinal direction or the short direction of the light source 3 arranged to be inclined as described above. Therefore, in the present invention, as shown in FIG. 14B, the light guide 2 is attached by being rotated by about 45 degrees with respect to the longitudinal direction of the light source 3 and has a U-shaped cross section so as to accommodate the light guide 2. Both side surfaces and bottom surfaces, and further, ribs for fixing screws to be attached to the vehicle interior panel 5 are configured not to jump out of the outer shape of the light source 3 when viewed from the longitudinal direction of the linear illumination device 1. Thereby, the linear illuminating device 1 can be comprised compactly as a whole, and it is possible to radiate | emit light in a predetermined direction. In order to increase the case function by enlarging both side surfaces of the case 4 so as to obtain a predetermined illumination pattern, only the both side surfaces protrude from the outer shape of the light source 3 to enlarge the linear illumination device 1. Can be kept to a minimum.
実施例3の構成によっても、実施例1と同様に、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる線状照明装置、とすることができる。   Also according to the configuration of the third embodiment, similarly to the first embodiment, it is possible to provide a linear lighting device that can be easily fixed to the mounting member, can prevent erroneous assembly, and can provide a high-quality lighting pattern. .
実施例4の線状照明装置1について、図15を引用して説明する。
この実施例4は、実施例3に対して、切り欠き25および突部44を設ける箇所においてのみ相違し、その他は基本的に共通であるから、同様の符号を付し、説明を省略する。
The linear illumination device 1 of Example 4 will be described with reference to FIG.
The fourth embodiment is different from the third embodiment only in the portions where the notches 25 and the protrusions 44 are provided, and the others are basically the same, and thus the same reference numerals are given and description thereof is omitted.
切り欠き25は、導光体2の他端部の出射面23側に設けられている。切り欠き25と対向するケース4の内面(遮光壁49の上面)には、切り欠き25内にまで突出する突部44が形成されている。この構成によれば、切り欠き25が反射面側に設けられている実施例3と比べて、切り欠き25および突部44と遮光壁49との距離が短くなるため、光が切り欠き25で反射し迷光を生じさせて照明パターンを乱す現象が軽減され、照明パターンをより高品質に形成できる。   The notch 25 is provided on the light exit surface 23 side of the other end of the light guide 2. A protrusion 44 that protrudes into the notch 25 is formed on the inner surface of the case 4 (the upper surface of the light shielding wall 49) facing the notch 25. According to this configuration, since the distance between the notch 25 and the projection 44 and the light shielding wall 49 is shorter than in the third embodiment in which the notch 25 is provided on the reflecting surface side, the light is notched at the notch 25. The phenomenon of reflecting stray light and disturbing the illumination pattern is reduced, and the illumination pattern can be formed with higher quality.
遮光壁49は、出射面23と切り欠き25と突部とを覆っている。この構成によれば、誤組付け防止用の切り欠きと突部での光の反射による迷光を遮光壁により遮光して、光源とは反対側の他端部における光のムラを低減でき、高品質な照明パターンを得ることができる。   The light shielding wall 49 covers the emission surface 23, the notch 25, and the protrusion. According to this configuration, the stray light caused by the notch for preventing wrong assembly and the reflection of light at the protrusion is shielded by the light shielding wall, and the unevenness of the light at the other end opposite to the light source can be reduced. A quality illumination pattern can be obtained.
実施例4の構成によっても、実施例1と同様に、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる線状照明装置、とすることができる。   According to the configuration of the fourth embodiment, similarly to the first embodiment, it is possible to provide a linear illumination device that can be easily fixed to the mounting member, can prevent erroneous assembly, and can obtain a high-quality illumination pattern. .
実施例5の線状照明装置1について、図16,17を引用して説明する。
この実施例5は、実施例2に対して、導光体2と光源3との接続に実施例3の接続構造を採用し、導体対の側面に嵌合用リブを設けた点においてのみ相違し、その他は基本的に共通であるから、同様の符号を付し、説明を省略する。
A linear illumination device 1 of Example 5 will be described with reference to FIGS.
The fifth embodiment is different from the second embodiment only in that the connection structure of the third embodiment is adopted for connecting the light guide 2 and the light source 3 and a fitting rib is provided on the side surface of the conductor pair. Since the others are basically the same, the same reference numerals are given and the description is omitted.
導光体2は、入射面21側の端部付近に光源3を導光体2に固定するための一対の嵌合用リブ202及び一対の嵌合爪203がそれぞれ対向配置されている。一対の嵌合用リブ202は、それぞれ横反射面に突設され、入射面21側の端が光源3の取付壁34の先端に当接している。一対の嵌合爪203は、出射面23と反射面22とに突設され、取付壁34の取付孔35に係合している。また、取付壁34に挿入するときに導光体2の向きを合わせられるよう、出射面23に突設されている嵌合爪203は反射面22に突設されている嵌合爪203より入射面21側に寄っている。この構成によれば、導光体2を、光源3の取付壁34に対し、傾くことなく正確に取り付けることができる。   In the light guide 2, a pair of fitting ribs 202 and a pair of fitting claws 203 for fixing the light source 3 to the light guide 2 are disposed opposite to each other in the vicinity of the end on the incident surface 21 side. Each of the pair of fitting ribs 202 protrudes from the lateral reflection surface, and the end on the incident surface 21 side is in contact with the tip of the mounting wall 34 of the light source 3. The pair of fitting claws 203 protrude from the emission surface 23 and the reflection surface 22 and engage with the attachment hole 35 of the attachment wall 34. Further, the fitting claw 203 protruding from the emission surface 23 is incident from the fitting claw 203 protruding from the reflection surface 22 so that the light guide 2 can be oriented when inserted into the mounting wall 34. Close to the surface 21 side. According to this configuration, the light guide 2 can be accurately attached to the attachment wall 34 of the light source 3 without being inclined.
また、出射面23は、遮光壁41とケース4の開口との境界から開口へ向かって10mmまでの範囲と、遮光壁49とケース4の開口との境界から開口へ向かって10mmまでの範囲とに、光散乱部26として、なし地のシボ形状(破線のクロスハッチングで示されている)が形成されている。また、導光体2の他端29にも、光散乱部27として、なし地のシボ形状が形成されている。さらに、導光体2の溝24と、切り欠き25の段差部にも、なし地のシボ形状が形成されている。   The exit surface 23 has a range from the boundary between the light shielding wall 41 and the opening of the case 4 to 10 mm toward the opening, and a range from the boundary between the light shielding wall 49 and the opening of the case 4 to 10 mm toward the opening. Further, as the light scattering portion 26, a textured shape (shown by broken cross hatching) is formed. In addition, a textured shape of the base is formed as the light scattering portion 27 also at the other end 29 of the light guide 2. Further, a textured shape of a plain is also formed in the groove 24 of the light guide 2 and the step portion of the notch 25.
実施例5の構成によっても、実施例1と同様に、取付部材への固定が簡単で、誤組付けを防止でき、なおかつ高品質な照明パターンが得られる線状照明装置、とすることができる。   According to the configuration of the fifth embodiment, similarly to the first embodiment, it is possible to provide a linear lighting device that can be easily fixed to the mounting member, can prevent erroneous assembly, and can provide a high-quality lighting pattern. .
なお、本発明は前記実施例に限定されるものではなく、発明の趣旨から逸脱しない範囲で、次のように適宜変更して具体化することもできる。   In addition, this invention is not limited to the said Example, In the range which does not deviate from the meaning of invention, it can also be suitably changed and embodied as follows.
(1)図18に示すように、丸棒状の導光体2を使用すること。 (1) Use a round bar-shaped light guide 2 as shown in FIG.
(2)隣り合う溝24と溝24との間に、図19(a)に示すように、ケース4を固定するネジ71を嵌挿するためのネジ穴72を設けたり、図19(b)に示すように、ケース4に被係合物76を嵌入して固定するための嵌入穴77を設けたりすること。 (2) Between the adjacent grooves 24 and 24, as shown in FIG. 19A, a screw hole 72 for inserting a screw 71 for fixing the case 4 is provided, or FIG. As shown in FIG. 4, a fitting hole 77 for fitting and fixing the engaged object 76 to the case 4 is provided.
(3)以上の実施例においては、ケース4を車両側の内装部材や収納部材などの取付部材とは別の収容部材として例示したが、その取付箇所に応じて車両側の取付部材と一体化しても良い。このような例として、インパネ照明13の場合はインパネ部材の背面にケース4を一体に形成したり、コンソール部の収納照明の場合は、コンソール部の収納部材の内部にケース4を一体化する、などが例示できる。車両内装部材の背面(内部)にケース4を一体に設けることで、部品点数を低減できる。 (3) In the above embodiment, the case 4 is exemplified as a housing member different from the mounting member such as the interior member or the housing member on the vehicle side. However, the case 4 is integrated with the mounting member on the vehicle side according to the mounting location. May be. As such an example, in the case of the instrument panel illumination 13, the case 4 is integrally formed on the back surface of the instrument panel member, or in the case of the storage illumination of the console part, the case 4 is integrated inside the storage member of the console part. Etc. can be exemplified. By providing the case 4 integrally on the back surface (inside) of the vehicle interior member, the number of parts can be reduced.
(4)本発明は、特に車室内照明に適用できる。また車室内照明に限らず、本発明の趣旨を逸脱しない範囲において、車室外照明や車以外の照明としても適用できる。 (4) The present invention is particularly applicable to vehicle interior lighting. In addition, the present invention is not limited to vehicle interior lighting, and can be applied to vehicle exterior lighting or lighting other than a vehicle within a range not departing from the gist of the present invention.
1 線状照明装置
2 導光体
3 光源
4 ケース
22 反射面
23 出射面
24 溝
25 切り欠き
26 光散乱部
27 光散乱部
28 光入射制限部
29 他端面
41 遮光壁
44 突部
45 固定部
46 非成形部(穴)
49 遮光壁
50 光形状加工壁
DESCRIPTION OF SYMBOLS 1 Linear illuminating device 2 Light guide 3 Light source 4 Case 22 Reflecting surface 23 Output surface 24 Groove 25 Notch 26 Light scattering part 27 Light scattering part 28 Light incident restriction part 29 Other end surface 41 Light-shielding wall 44 Projection part 45 Fixing part 46 Non-molded part (hole)
49 Shading wall 50 Optical shape processing wall
記光散乱部は、前記光源側の遮光壁と開口との境界から開口へ向かって少なくとも2mmの範囲を含み且つ最長でも10mmを超えない範囲に設けられていることが好ましい。
入射面側遮光壁と照射口との境界からの長さが2mm未満では受光面に生じる明暗の境界を暈す効果が弱くなり、この長さが10mmを超えると光が散乱される範囲が大きくなって、照明品質が低下するおそれがあるからである。
Before Symbol light scattering portion is preferably provided in a range not exceeding and 10mm at the longest includes a range of at least 2mm toward the boundary to the opening of the shielding wall and the opening of the light source side.
If the length from the boundary between the light-shielding wall on the incident surface side and the irradiation port is less than 2 mm, the effect of blurring the light / dark boundary generated on the light receiving surface is weakened. If this length exceeds 10 mm, the range in which light is scattered is large. This is because the illumination quality may be deteriorated.
さらに、導光体の端部の入射面は、光入射時に光源の光軸を複数の溝が配列されている導光体の反射面側に屈折するよう、反射面と対向するように傾斜していること、および、入射面は、反射面と垂直な面に対して3〜7°傾斜していること、を特徴とする。
または、導光体の端部の入射面は、光入射時に光源の光軸を出射面側に屈折するよう、出射面と対向するように傾斜していること、および、入射面は、光源の光軸に直交する面に対して3〜7°傾斜していること、を特徴とする。
上記構成によれば、光源の光が導光体内部でほとんど反射することなく導光体の他端側まで到達して、他端側から放射される光量が入射面側の光量よりも多くなる現象を防ぎ、導光体内部で反射させることで均一な線状光を得ることが可能となる。
Furthermore, the incident surface at the end of the light guide is inclined so as to face the reflection surface so that the optical axis of the light source is refracted toward the reflection surface of the light guide where a plurality of grooves are arranged when light is incident. And the incident surface is inclined by 3 to 7 ° with respect to a surface perpendicular to the reflecting surface.
Alternatively, the incident surface at the end of the light guide is inclined so as to face the emission surface so that the optical axis of the light source is refracted toward the emission surface when light is incident, and the incidence surface is It is characterized by being inclined by 3 to 7 ° with respect to a plane orthogonal to the optical axis.
According to the above configuration, the light from the light source reaches the other end side of the light guide with almost no reflection inside the light guide, and the amount of light emitted from the other end is larger than the amount of light on the incident surface side. It is possible to obtain uniform linear light by preventing the phenomenon and reflecting the light inside the light guide.
入射面21は、図4(a)に示したよう、光入射時に光源3の光軸を反射面22側に屈折するよう、反射面22と対向するように傾斜している。光源3として指向性の高いLEDを用いた場合、光軸方向に多くの光が放射される。このため、入射面21が反射面22と垂直で、かつ光源3の光軸とも垂直な場合、光源3の光軸上の光がほぼ屈折せずに導光体内部に入射し、導光体内部でほとんど反射することなく導光体2の他端側まで到達する。この結果、他端側から放射される光量が入射面側の光量よりも多くなり、導光体から均一に線状に放射させることが困難であった。しかし入射面21を反射面22と対向するように傾斜させたことで、光の多くが反射面22側に屈折し、結果として、均一な線状光を得ることが可能となる。このような効果を得るには、導光体2の長さにもよるが、反射面22と垂直な面に対して入射面21の傾斜角θを3〜7度程度とすればよい。
また上記例では光源3の光軸が導光体長手方向に平行な場合について例示したが、入射面21を傾斜させるのではなく、その光軸が反射面22と交差するように光源3自体を傾けて配置することとしてもよい。ただし光源自体を傾斜させる場合は、導光体2の長さに応じて傾斜角を調整する必要があるため、光源を取り付ける周辺部材を多数用意する必要が生じる。このため光源の向きを固定し、入射面21の傾斜角θのみを変更すれば、生産性が向上するため好ましい。
Incident surface 21, as shown in FIG. 4 (a), so as to refract at a light incident optical axis of the light source 3 to the reflecting surface 22 is inclined so as to face the reflective surface 22. When a highly directional LED is used as the light source 3, a lot of light is emitted in the optical axis direction. For this reason, when the incident surface 21 is perpendicular to the reflecting surface 22 and is also perpendicular to the optical axis of the light source 3, the light on the optical axis of the light source 3 is incident on the inside of the light guide without being refracted. It reaches the other end of the light guide 2 with almost no internal reflection. As a result, the amount of light radiated from the other end side is larger than the amount of light on the incident surface side, and it has been difficult to radiate uniformly from the light guide. However, by tilting the incident surface 21 so as to face the reflecting surface 22, most of the light is refracted toward the reflecting surface 22, and as a result, uniform linear light can be obtained. In order to obtain such an effect, although depending on the length of the light guide 2, the inclination angle θ of the incident surface 21 with respect to the surface perpendicular to the reflecting surface 22 may be set to about 3 to 7 degrees.
In the above example, the optical axis of the light source 3 is illustrated as being parallel to the longitudinal direction of the light guide. However, the incident surface 21 is not inclined, but the light source 3 itself is arranged so that the optical axis intersects the reflecting surface 22. It may be arranged at an angle. However, when the light source itself is inclined, it is necessary to adjust the inclination angle according to the length of the light guide 2, and thus it is necessary to prepare a large number of peripheral members to which the light source is attached. For this reason, it is preferable to fix the direction of the light source and change only the inclination angle θ of the incident surface 21 because the productivity is improved.
実施例5の線状照明装置1について、図16,17を引用して説明する。
この実施例5は、実施例2に対して、導光体2と光源3との接続に実施例3の接続構造を採用し、導光体2の側面に嵌合用リブを設けた点においてのみ相違し、その他は基本的に共通であるから、同様の符号を付し、説明を省略する。
A linear illumination device 1 of Example 5 will be described with reference to FIGS.
The fifth embodiment is different from the second embodiment only in that the connection structure of the third embodiment is adopted for the connection between the light guide 2 and the light source 3 and the fitting rib is provided on the side surface of the light guide 2. Since they are different and are basically the same in common, the same reference numerals are given and description thereof is omitted.

Claims (25)

  1. 長尺の導光体と、導光体長手方向の端部に設けられる光源と、これらを収納するケースとを有し、
    前記導光体は、複数の溝が導光体長手方向に配列し、前記端部と反対側の他端部に階段状の切り欠きが設けられ、
    前記切り欠きと対向する前記ケースの内面には、前記切り欠き内にまで突出する突部が形成されている
    ことを特徴とする線状照明装置。
    A long light guide, a light source provided at an end of the light guide in the longitudinal direction, and a case for storing these,
    The light guide has a plurality of grooves arranged in the longitudinal direction of the light guide, and a stepped notch is provided at the other end opposite to the end.
    A projection that projects into the notch is formed on the inner surface of the case facing the notch.
  2. 前記導光体は、その導光体長手方向に沿った一側面が出射面とされ、
    前記ケースは、前記導光体の前記出射面が露出するように導光体長手方向に沿って開口している請求項1に記載の線状照明装置。
    The light guide body has one side surface along the light guide body longitudinal direction as an emission surface,
    The linear illumination device according to claim 1, wherein the case is opened along a longitudinal direction of the light guide so that the emission surface of the light guide is exposed.
  3. 前記切り欠きは、前記導光体の他端部の出射面側に設けられている請求項2に記載の線状照明装置。   The linear illumination device according to claim 2, wherein the notch is provided on an emission surface side of the other end portion of the light guide.
  4. 前記ケースの開口の導光体長手方向における光源とは反対側の他端部に、前記出射面と前記切り欠きと前記突部とを覆う遮光壁が設けられている請求項2又は3に記載の線状照明装置。   The light-shielding wall which covers the said output surface, the said notch, and the said protrusion is provided in the other end part on the opposite side to the light source in the light guide body longitudinal direction of the opening of the said case. Linear lighting device.
  5. 前記ケースの遮光壁よりも開口側に、その壁面が光源から離れる方向に向かって凹んだ湾曲形状を有する光形状加工壁が設けられている請求項4に記載の線状照明装置。   The linear lighting device according to claim 4, wherein a light processing wall having a curved shape in which the wall surface is recessed in a direction away from the light source is provided closer to the opening side than the light shielding wall of the case.
  6. 前記複数の溝は、前記導光体長手方向に沿った断面においてV字形状又はU字形状をなし、前記導光体長手方向において等間隔に配列され、
    前記溝と前記切り欠きは、夫々の前記光源と対向する面が相似形状である
    ことを特徴とする請求項1〜5のいずれか一項に記載の線状照明装置。
    The plurality of grooves have a V shape or a U shape in a cross section along the longitudinal direction of the light guide, and are arranged at equal intervals in the longitudinal direction of the light guide,
    The linear illumination device according to any one of claims 1 to 5, wherein the groove and the notch have similar shapes facing each of the light sources.
  7. 前記切り欠きに隣接する溝と前記切り欠きとの間隔が、前記複数の溝同士の間隔と同じであることを特徴とする請求項6に記載の線状照明装置。   The linear illumination device according to claim 6, wherein an interval between the groove adjacent to the notch and the notch is the same as an interval between the plurality of grooves.
  8. 前記ケースの開口の導光体長手方向における光源側の端部に、前記導光体の出射面を覆う遮光壁が設けられていることを特徴とする請求項2〜5のいずれか一項に記載の線状照明装置。   The light-shielding wall which covers the output surface of the said light guide is provided in the edge part by the side of the light guide in the light guide longitudinal direction of the opening of the said case, The Claim 1 characterized by the above-mentioned. The linear illumination device described.
  9. 前記出射面は、前記光源側の遮光壁と対向する領域を含むように光散乱部が設けられていることを特徴とする請求項8に記載の線状照明装置。   The linear illumination apparatus according to claim 8, wherein the emission surface is provided with a light scattering portion so as to include a region facing the light shielding wall on the light source side.
  10. 前記ケースの開口の導光体長手方向における光源とは反対側の他端部に、前記導光体の出射面を覆う遮光壁が設けられていることを特徴とする請求項2〜5,8,9のいずれか一項に記載の線状照明装置。   The light shielding wall which covers the output surface of the said light guide is provided in the other end part on the opposite side to the light source in the light guide longitudinal direction of the opening of the said case. The linear illumination device according to any one of claims 9 and 9.
  11. 前記出射面は、前記光源とは反対側の遮光壁と対向する領域を含むように光散乱部が設けられていることを特徴とする請求項10に記載の線状照明装置。   The linear illumination device according to claim 10, wherein a light scattering portion is provided on the emission surface so as to include a region facing a light shielding wall opposite to the light source.
  12. 前記導光体の他端部の端面に、光散乱部が設けられていることを特徴とする請求項1〜11のいずれか一項に記載の線状照明装置。   The linear illumination device according to any one of claims 1 to 11, wherein a light scattering portion is provided on an end face of the other end portion of the light guide.
  13. 前記ケースの開口の導光体長手方向における光源側の端部には、前記出射面を覆い、光源側に向かって凹んだ湾曲形状を有する遮光壁が設けられ、
    前記ケースの開口の導光体長手方向における光源とは反対側の他端部には、前記出射面を覆う遮光壁が設けられ、さらに該遮光壁よりも開口側には、その壁面が光源から離れる方向に向かって凹んだ湾曲形状を有する光形状加工壁が設けられている、
    ことを特徴とする請求項2又は3に記載の線状照明装置。
    The light source side end of the opening of the case on the light source side is provided with a light shielding wall having a curved shape that covers the emission surface and is recessed toward the light source,
    The other end of the case opening opposite to the light source in the longitudinal direction of the light guide is provided with a light shielding wall that covers the emission surface, and the wall surface is further from the light source on the opening side than the light shielding wall. An optical shape processing wall having a curved shape that is recessed in the direction of leaving is provided,
    The linear illumination device according to claim 2, wherein the linear illumination device is provided.
  14. 前記光源側の遮光壁の湾曲形状は、前記光形状加工壁の湾曲形状よりも大きく湾曲している
    ことを特徴とする請求項13に記載の線状照明装置。
    The linear illumination device according to claim 13, wherein a curved shape of the light shielding wall on the light source side is larger than a curved shape of the optical shape processing wall.
  15. 前記光形状加工壁の先端の湾曲形状は、前記光源側の遮光壁の湾曲形状を導光体長手方向に縮小した形状である、
    ことを特徴とする請求項13又は14に記載の線状照明装置。
    The curved shape at the tip of the optical shape processing wall is a shape obtained by reducing the curved shape of the light shielding wall on the light source side in the longitudinal direction of the light guide.
    The linear illumination device according to claim 13 or 14, characterized by the above.
  16. 前記開口の深さ方向において、前記光形状加工壁の先端は、前記光源側の遮光壁よりも前記出射面から遠い開口側に配置されている
    ことを特徴とする請求項13〜15のいずれか一項に記載の線状照明装置。
    The tip of the optical shape processing wall in the depth direction of the opening is arranged on the opening side farther from the light exit surface than the light shielding wall on the light source side. The linear illumination device according to one item.
  17. 前記光源とは反対側の遮光壁は、前記出射面と前記切り欠きと前記突部とを覆うように設けられている
    ことを特徴とする請求項13〜16のいずれか1項に記載の線状照明装置。
    The line according to any one of claims 13 to 16, wherein the light shielding wall opposite to the light source is provided so as to cover the emission surface, the notch, and the protrusion. Illuminator.
  18. 前記ケースには穴が貫設され、穴は前記導光体の隣り合う溝と溝との間に位置するように配された請求項1〜17のいずれか一項に記載の線状照明装置。   The linear illumination device according to any one of claims 1 to 17, wherein a hole is provided in the case, and the hole is disposed between adjacent grooves of the light guide. .
  19. 前記端部側の光散乱部は、前記光源側の遮光壁と開口との境界から開口へ向かって少なくとも2mmの範囲を含み且つ最長でも10mmを超えない範囲に設けられている請求項9記載の線状照明装置。   The light scattering portion on the end side is provided in a range including at least 2 mm from the boundary between the light shielding wall on the light source side and the opening toward the opening and not exceeding 10 mm at the longest. Linear lighting device.
  20. 前記入射面は、光入射時に前記光源の光軸を前記反射面側に屈折するよう、前記反射面と対向するように傾斜している請求項1〜19のいずれか一項に記載の線状照明装置。   The linear shape as described in any one of Claims 1-19 in which the said incident surface is inclined so that the said reflective surface may be opposed so that the optical axis of the said light source may be refracted to the said reflective surface side at the time of light incidence. Lighting device.
  21. 前記入射面は、前記反射面と垂直な面に対して3〜7°傾斜している請求項20に記載の線状照明装置。   The linear illumination device according to claim 20, wherein the incident surface is inclined by 3 to 7 degrees with respect to a surface perpendicular to the reflecting surface.
  22. 前記入射面は、光入射時に前記光源の光軸を前記出射面側に屈折するよう、前記出射面と対向するように傾斜している請求項1〜19のいずれか一項に記載の線状照明装置。   The linear shape as described in any one of Claims 1-19 in which the said incident surface inclines so that the said output surface may be opposed so that the optical axis of the said light source may be refracted to the said output surface side at the time of light incidence. Lighting device.
  23. 前記入射面は、前記光源の光軸に直交する面に対して3〜7°傾斜している請求項22に記載の線状照明装置。   The linear illumination device according to claim 22, wherein the incident surface is inclined by 3 to 7 degrees with respect to a surface orthogonal to the optical axis of the light source.
  24. 前記導光体の入射面に、前記光源から入射する光の量を制限する光入射制限部が設けられている請求項1〜20のいずれか一項に記載の線状照明装置。   21. The linear illumination device according to any one of claims 1 to 20, wherein a light incident restriction unit that restricts an amount of light incident from the light source is provided on an incident surface of the light guide.
  25. 前記光入射制限部は、前記入射面における前記光源の光軸と交差する領域の周囲が除去されたものである請求項24に記載の線状照明装置。   25. The linear illumination device according to claim 24, wherein the light incident restricting portion is obtained by removing the periphery of a region intersecting the optical axis of the light source on the incident surface.
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