JP4783986B2 - Illuminator for running seat appearance inspection - Google Patents
Illuminator for running seat appearance inspection Download PDFInfo
- Publication number
- JP4783986B2 JP4783986B2 JP2001060632A JP2001060632A JP4783986B2 JP 4783986 B2 JP4783986 B2 JP 4783986B2 JP 2001060632 A JP2001060632 A JP 2001060632A JP 2001060632 A JP2001060632 A JP 2001060632A JP 4783986 B2 JP4783986 B2 JP 4783986B2
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- JP
- Japan
- Prior art keywords
- fan
- illuminator
- fluorescent lamp
- traveling
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Description
【０００１】
【産業上の利用分野】
本発明は、印刷物等の走行しているシートの検査装置において利用される走行シート外観検査用照明器に関する。
【０００２】
【従来の技術】
複数のインキを使用して印刷が行われる印刷物には、欠陥が生じることがしばしばある。例えば、位置ずれや、他のインキによる筋状の模様の付着などである。このような印刷物の欠陥は早期に発見して、原因を取り除き、再印刷を行うことが好ましい。そのため印刷物の欠陥検出のための検査装置として様々なものが開発されている。
【０００３】
代表的なものとしては、走行している印刷物を撮影して画像として取り込むイメージセンサカメラを利用し、このイメージセンサカメラにより撮影された画像を調べることにより、印刷物の欠陥を発見するものがある。このような検査装置では、画像撮影のために所定量以上の明るさが必要となる。そのため、走行している印刷物を照らすために何らかの照明手段が用いられるのが普通である。
【０００４】
このような照明手段としては、様々なものが適用できるが、蛍光灯などの比較的安価なものが良く利用されている。
【０００５】
【発明が解決しようとする課題】
しかしながら、上述のように、従来多くの検査装置では、蛍光灯が利用されるため、蛍光灯自身の発熱により、蛍光灯周辺の雰囲気温度が上昇してしまうという問題がある。また、走行しているシートをイメージセンサカメラで撮影する際、シートの走行が開始すると蛍光灯周辺に気流が発生し、蛍光灯周辺の雰囲気温度が下がる。それに連れて蛍光灯の明るさが明るくなり、イメージセンサカメラで撮影されて取り込まれる入力画像の明るさも明るくなってしまうので、高精度な検査ができないという問題も生じている。
【０００６】
上記の点に鑑み、本発明は、印刷物等の走行しているシートの検査装置において、検査装置の照明手段付近の雰囲気温度の変動を所定の範囲内に保つことが可能な走行シート外観検査用照明器を提供することを課題とする。
【０００７】
【課題を解決するための手段】
上記課題を解決するため、請求項１に記載の発明では、イメージセンサカメラで走行しているシートを撮影し、その撮影した画像を処理することによって、欠点の有無を検査する装置に利用される照明器であって、前記走行するシート上の撮影ポイントに対して光を照射する照明灯周辺に風を送り込むためのファンを備え、前記ファンは照明灯取り付けと反射板を兼用するカバーの内面に設けられ、前記ファンの色と前記カバーの内面の色を同色とすることを特徴とする。
【０００８】
請求項１に記載の発明によれば、撮影ポイントを照明するように設置された照明灯周辺に風を送り込むためのファンを備えるようにしたので、撮影ポイントを照らすための照明灯周辺の雰囲気温度の変動を所定の範囲内に保つことが可能となる。また、雰囲気温度を一定に保つように機能するファンが照明灯取り付け用カバーに設けられているため、ファンによる送風を外部に漏らすことなく、効率的な雰囲気温度の調整が可能となる。また、ファンの色と照明灯取り付け用カバーの内面の色を同一としたので、光が照射されたシート表面の明るさにムラができることなく、正しい画像が撮影されることになり、高精度な検査を行うための撮影画像を提供することができる。
【００１１】
請求項２に記載の発明では、請求項１に記載の各照明器において、ファンが複数個設けられており、それら複数のファンは照明灯の長手方向に沿って配列されていることを特徴とする。請求項２に記載の発明によれば、複数のファンが照明灯の長手方向に沿って設けられるため、無駄なスペースを取ることなく、多数のファンを設置することが可能となる。
【００１２】
【発明の実施の形態】
以下、本発明の実施形態について、図面を参照して詳細に説明する。
図１は、本発明に係る照明器の一実施形態を示す斜視図である。図１において、１は蛍光灯、２はファン、３は蛍光灯カバーである。蛍光灯１は、従来より周知の蛍光灯を利用することができ、その長手方向が走行シートの走行方向と直交するように設置される。ファン２としては、送風機能を有する小型のものを適用することが好ましい。蛍光灯から発せられる熱を下げるために、図１に示すようにファン２は蛍光灯の長手方向全体に渡って複数個設けられる。蛍光灯カバー３は、蛍光灯からの灯りを外部に漏らさず効率良く利用するために設けられるものである。
【００１３】
ファン２は蛍光灯カバーの内側に取り付けられることになるが、ファン２の色と蛍光灯カバー内面の色が異なったものであると、光が照射されたシート表面の明るさにムラが生じる。蛍光灯カバーは、蛍光灯を覆うようにして設けられているため、蛍光灯からの光は蛍光灯カバー内面により反射される。また、蛍光灯からの光は、蛍光灯カバーの内面に設置されたファンによっても反射される。このとき、蛍光灯カバーの内面により反射される光の色と、ファンにより反射される光の色は、それぞれ蛍光灯カバーの内面の色と、ファンの色に影響されることになり、その結果シート表面に照射される光が均一でなくなるのである。
【００１４】
以上、本発明の実施形態について説明したが、本発明は上記実施形態に限定されるものではなく種々の変形が可能である。例えば、上記実施形態では、照明灯として蛍光灯を利用した場合について説明したが、蛍光灯以外の白熱灯等を利用しても良い。
【００１５】
【発明の効果】
以上、説明したように本発明によれば、イメージセンサカメラで走行しているシートを撮影し、その撮影した画像を処理することによって、欠点の有無を検査する装置に利用される照明器において、走行するシート上の撮影ポイントに対して光を照射する照明灯周辺に風を送り込むためのファンを備えた照明器を用いるようにしたので、撮影ポイントを照らすための照明灯周辺の雰囲気温度の変動を所定の範囲内に保つことが可能となるという効果を奏する。
【図面の簡単な説明】
【図１】本発明による走行シート外観検査用照明器の斜視図である。
【符号の説明】
１・・・蛍光灯
２・・・ファン
３・・・蛍光灯カバー[0001]
[Industrial application fields]
The present invention relates to a traveling sheet visual inspection illuminator that is used in an inspection apparatus for traveling sheets such as printed matter.
[0002]
[Prior art]
Defects often arise in printed matter that is printed using multiple inks. For example, misalignment, and streak-like pattern attachment with other ink. It is preferable to detect defects of such printed matter at an early stage, remove the cause, and perform reprinting. For this reason, various devices have been developed as inspection devices for detecting defects in printed matter.
[0003]
As a typical example, an image sensor camera that captures a moving printed material and captures it as an image is used, and an image captured by the image sensor camera is examined to find a defect in the printed material. In such an inspection apparatus, a predetermined amount of brightness or more is required for image capturing. For this reason, it is common for some illumination means to be used to illuminate the printed material that is running.
[0004]
As such illumination means, various devices can be applied, but a relatively inexpensive device such as a fluorescent lamp is often used.
[0005]
[Problems to be solved by the invention]
However, as described above, in many conventional inspection apparatuses, since a fluorescent lamp is used, there is a problem that the ambient temperature around the fluorescent lamp rises due to heat generated by the fluorescent lamp itself. Further, when the traveling sheet is photographed by the image sensor camera, when the traveling of the sheet starts, an air flow is generated around the fluorescent lamp, and the ambient temperature around the fluorescent lamp decreases. Accordingly, the brightness of the fluorescent lamp becomes brighter, and the brightness of the input image captured and captured by the image sensor camera also becomes brighter. Therefore, there is a problem that high-precision inspection cannot be performed.
[0006]
In view of the above points, the present invention is a traveling sheet inspection apparatus for traveling sheets, such as printed matter, capable of maintaining a variation in ambient temperature in the vicinity of illumination means of the inspection apparatus within a predetermined range. It is an object to provide an illuminator.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention described in claim 1 is used in an apparatus for inspecting the presence or absence of defects by photographing a sheet traveling with an image sensor camera and processing the photographed image. An illuminator comprising a fan for sending wind around an illuminating lamp that irradiates light to a shooting point on the traveling sheet, and the fan is provided on an inner surface of a cover that serves both as an illuminating lamp and a reflector. It is provided that the color of the fan and the color of the inner surface of the cover are the same color .
[0008]
According to the first aspect of the present invention, since the fan for sending wind to the vicinity of the illuminating lamp installed so as to illuminate the photographing point is provided, the ambient temperature around the illuminating lamp for illuminating the photographing point Can be kept within a predetermined range. In addition, since the fan that functions to keep the ambient temperature constant is provided in the cover for attaching the illuminating lamp, it is possible to efficiently adjust the ambient temperature without leaking air blown by the fan to the outside. In addition, since the color of the fan and the color of the inner surface of the cover for attaching the illuminating lamp are the same, the brightness of the surface of the sheet irradiated with light will not be uneven, and a correct image will be taken. A photographed image for performing an inspection can be provided.
[0011]
According to a second aspect of the present invention, in each illuminator according to the first aspect, a plurality of fans are provided, and the plurality of fans are arranged along the longitudinal direction of the illuminating lamp. To do. According to the second aspect of the present invention, since the plurality of fans are provided along the longitudinal direction of the illuminating lamp, it is possible to install a large number of fans without taking a useless space.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of an illuminator according to the present invention. In FIG. 1, 1 is a fluorescent lamp, 2 is a fan, and 3 is a fluorescent lamp cover. The fluorescent lamp 1 can use a conventionally well-known fluorescent lamp, and is installed so that the longitudinal direction thereof is orthogonal to the traveling direction of the traveling seat. As the fan 2, it is preferable to apply a small fan having a blowing function. In order to reduce the heat generated from the fluorescent lamp, a plurality of fans 2 are provided over the entire longitudinal direction of the fluorescent lamp as shown in FIG. The fluorescent lamp cover 3 is provided to efficiently use the lamp from the fluorescent lamp without leaking to the outside.
[0013]
The fan 2 is attached to the inside of the fluorescent lamp cover. If the color of the fan 2 is different from the color of the inner surface of the fluorescent lamp cover, the brightness of the sheet surface irradiated with light becomes uneven. Since the fluorescent lamp cover is provided so as to cover the fluorescent lamp, the light from the fluorescent lamp is reflected by the inner surface of the fluorescent lamp cover. The light from the fluorescent lamp is also reflected by a fan installed on the inner surface of the fluorescent lamp cover. At this time, the color of light reflected by the inner surface of the fluorescent lamp cover and the color of light reflected by the fan are influenced by the color of the inner surface of the fluorescent lamp cover and the color of the fan, respectively. The light irradiated on the sheet surface is not uniform.
[0014]
As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, A various deformation | transformation is possible. For example, in the above embodiment, the case where a fluorescent lamp is used as the illumination lamp has been described. However, an incandescent lamp other than the fluorescent lamp may be used.
[0015]
【The invention's effect】
As described above, according to the present invention, as described above, in an illuminator used in an apparatus for inspecting the presence or absence of defects by photographing a sheet traveling with an image sensor camera and processing the photographed image, Because we used an illuminator with a fan to send wind around the illuminating lamp that illuminates the shooting point on the traveling sheet, the ambient temperature fluctuation around the illuminating lamp to illuminate the shooting point Can be maintained within a predetermined range.
[Brief description of the drawings]
FIG. 1 is a perspective view of a traveling sheet visual inspection illuminator according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Fluorescent lamp 2 ... Fan 3 ... Fluorescent lamp cover
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001060632A JP4783986B2 (en) | 2001-03-05 | 2001-03-05 | Illuminator for running seat appearance inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001060632A JP4783986B2 (en) | 2001-03-05 | 2001-03-05 | Illuminator for running seat appearance inspection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002257735A JP2002257735A (en) | 2002-09-11 |
| JP4783986B2 true JP4783986B2 (en) | 2011-09-28 |
Family
ID=18920026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001060632A Expired - Fee Related JP4783986B2 (en) | 2001-03-05 | 2001-03-05 | Illuminator for running seat appearance inspection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4783986B2 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04204139A (en) * | 1990-11-30 | 1992-07-24 | Iwasaki Electric Co Ltd | Weather resistance tester |
| JPH04350548A (en) * | 1991-05-28 | 1992-12-04 | Omron Corp | Lighting apparatus |
| JPH0541261U (en) * | 1991-10-31 | 1993-06-01 | 日本ビクター株式会社 | Temperature control device for mercury-fluorescent lamp used as light source for document illumination in image reading device |
| JPH05338121A (en) * | 1992-06-10 | 1993-12-21 | Dainippon Printing Co Ltd | Printed matter inspection device |
| JP3169098B2 (en) * | 1992-07-01 | 2001-05-21 | 日産自動車株式会社 | Inspection lighting equipment |
| JPH08178852A (en) * | 1994-12-22 | 1996-07-12 | Kirin Techno Syst:Kk | Lighting device for inspection |
| JP2920366B2 (en) * | 1996-07-01 | 1999-07-19 | マークテック株式会社 | UV inspection lamp |
| JP4129779B2 (en) * | 1998-10-07 | 2008-08-06 | 岩崎電気株式会社 | Illumination device for image processing inspection |
| JP2000180371A (en) * | 1998-12-11 | 2000-06-30 | Sharp Corp | Foreign matter inspecting apparatus and semiconductor process apparatus |
| JP2001004526A (en) * | 1999-06-22 | 2001-01-12 | Sony Corp | Method and apparatus for testing light fastness |
-
2001
- 2001-03-05 JP JP2001060632A patent/JP4783986B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002257735A (en) | 2002-09-11 |
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