JPH10301516A - Ultraviolet-ray irradiating device - Google Patents
Ultraviolet-ray irradiating deviceInfo
- Publication number
- JPH10301516A JPH10301516A JP9118626A JP11862697A JPH10301516A JP H10301516 A JPH10301516 A JP H10301516A JP 9118626 A JP9118626 A JP 9118626A JP 11862697 A JP11862697 A JP 11862697A JP H10301516 A JPH10301516 A JP H10301516A
- Authority
- JP
- Japan
- Prior art keywords
- ultraviolet
- visible light
- main body
- light
- transmission filter
- 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.)
- Pending
Links
Landscapes
- Optical Filters (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
Description
【０００１】[0001]
【０００２】本発明は紫外線照射装置の改良に関する。[0002] The present invention relates to an improvement in an ultraviolet irradiation device.
【０００３】[0003]
【従来の技術】従来、例えば道路壁面のディスプレー、
道路標識あるいは看板等において、下地部分は青色とし
て構成し、文字や図柄を蛍光面として構成し、同蛍光面
に紫外線を照射し、文字や図柄が強い視認特性を有する
ように構成してある。2. Description of the Related Art Conventionally, for example, displays on road walls,
In a road sign, a signboard, or the like, a base portion is configured as blue, characters and patterns are configured as fluorescent screens, and the fluorescent screen is irradiated with ultraviolet light so that the characters and designs have strong visual recognition characteristics.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記した紫
外線照射装置によると、文字や図柄以外の下地部分が沈
み込んで視認することができず、視認性が大きく低下す
る欠点がある。下地部分が沈み込むことで、例えば道路
標識に使用した場合、標識全体が視認できず、文字や図
柄が浮かびあがり違和感がある。However, according to the above-described ultraviolet irradiation apparatus, there is a drawback that the underlying portion other than characters and designs sinks and cannot be visually recognized, and visibility is greatly reduced. When the base portion sinks, for example, when used for a road sign, the entire sign cannot be visually recognized, and characters and designs emerge, giving a sense of incongruity.
【０００５】そこで、従来可視光のみを照射する照明装
置が使用されているが、同装置よると蛍光体を使用しな
いため、雨や雪等気象条件が悪いとき、乱反射し視認性
が低下する欠点がある。In view of the above, an illuminating device that radiates only visible light has been used. However, this device does not use a phosphor, so that when weather conditions such as rain and snow are bad, irregular reflection occurs and visibility deteriorates. There is.
【０００６】本発明は上記の諸点に鑑み発明したもので
あって、表示面全体が所定の明るさで視認することがで
き、また文字や図柄を明確に視認することができる紫外
線照射装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and provides an ultraviolet irradiating apparatus capable of visually recognizing the entire display surface with a predetermined brightness and clearly recognizing characters and designs. The purpose is to do.
【０００７】[0007]
【発明を解決するための手段】請求項１に記載の本発明
は、照射装置本体の内部に、近紫外線領域に高い反射特
性を有し、可視光領域に低い反射特性を有する反射鏡を
配置し、また同照射装置本体の前面に、紫外線領域にお
いて分光透過率が高く、可視光領域において分光透過率
の低い透光フィルターを配置して構成してある。さらに
透光フィルターから照射される紫外線と可視光の混光割
合を、２０対１以下の比率で構成してある。そして、表
示面全体が所定の明るさで視認することができ、また文
字や図柄を明確に視認することができる。According to the first aspect of the present invention, a reflector having a high reflection characteristic in the near ultraviolet region and a low reflection characteristic in the visible region is disposed inside the irradiation device main body. In addition, a light-transmitting filter having a high spectral transmittance in the ultraviolet region and a low spectral transmittance in the visible light region is arranged on the front surface of the irradiation device main body. Further, the mixing ratio of the ultraviolet light and the visible light emitted from the light transmitting filter is set to a ratio of 20: 1 or less. Then, the entire display surface can be visually recognized at a predetermined brightness, and characters and designs can be clearly recognized.
【０００８】[0008]
【発明の実施の形態】以下本発明を図１乃至図６につい
て説明する。図１及び図２において、１は照射器本体で
あって、例えばアルミニウム材で構成してある。２は照
射器本体１の内部に収納してなる反射鏡、３は反射鏡の
内部に装着してなる光源であって、例えば４００ワット
のメタルハライドランプを用いて構成してある。同光源
の分光透過特性は図６に示すとおりである。４は照射器
本体１の前端に配置してなるフィルターである。５は照
射器の前方に配置してなる道路標識であって、例えば下
地部分は青色として構成し、文字や図柄を蛍光面として
構成し、表示面に紫外線を効率よく照射し、可視光は減
光して照射し、文字や図柄が強い視認特性を有するよう
に構成してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to FIGS. 1 and 2, reference numeral 1 denotes an irradiator main body, which is made of, for example, an aluminum material. Reference numeral 2 denotes a reflecting mirror housed inside the irradiator main body 1, and 3 denotes a light source mounted inside the reflecting mirror, and is constituted by using, for example, a 400 watt metal halide lamp. The spectral transmission characteristics of the light source are as shown in FIG. Reference numeral 4 denotes a filter arranged at the front end of the irradiator body 1. Reference numeral 5 denotes a road sign disposed in front of the irradiator. For example, the base portion is configured as blue, characters and patterns are configured as fluorescent screens, and the display surface is efficiently irradiated with ultraviolet light, and visible light is reduced. The light and the light are irradiated so that the characters and the patterns have a strong visual recognition characteristic.
【０００９】上記の構成において、透光フィルターは、
紫外線領域において分光透過率が高く、可視光領域にお
いて分光透過率は低く構成してある。分光透過率は図３
と図４に示すように、波長３６５ｎｍにおいて７０％以
上であり、４６０ｎｍ〜６６０ｎｍにおける平均透過率
が０．５％以下に構成してある。同透光フィルターは、
着色剤を混入してなる硬質ガラスで構成してある。同紫
外線照射装置によると、紫外線を効率よく透過し可視光
の透過は僅かであるので、表示面全体を視認し得ると共
に文字や図柄を明確に視認することができ道路標識や看
板等の使用に適する。In the above configuration, the light-transmitting filter is
The spectral transmittance is high in the ultraviolet region and low in the visible light region. Figure 3 shows the spectral transmittance
As shown in FIG. 4 and FIG. 4, the average transmittance at wavelength 365 nm is 70% or more and the average transmittance at 460 nm to 660 nm is 0.5% or less. The translucent filter is
It is made of hard glass mixed with a coloring agent. According to the ultraviolet irradiation device, the ultraviolet light is transmitted efficiently and the visible light is slightly transmitted, so that the entire display surface can be visually recognized and the characters and patterns can be clearly recognized, so that it can be used for road signs and signboards. Suitable.
【００１０】反射鏡は、近紫外線領域に高い反射特性を
有し、可視光領域に低い反射特性を有して構成してあ
る。また同反射鏡は、図５に示すように近紫外線領域を
９０％反射し、可視光を吸収または1０％以下の反射特
性を有して構成してある。反射鏡は例えばアルミニウム
の表面に鏡面処理をし、さらに鏡面処理の表面に１４層
乃至２５層程度の光学多層膜を被着し、紫外線反射鏡と
して構成してある。同紫外線照射装置によると、紫外線
を効率よく反射し可視光の反射は僅かであるので、表示
面全体を視認し得ると共に文字や図柄を明確に視認する
ことができる。The reflecting mirror has a high reflection characteristic in the near ultraviolet region and a low reflection characteristic in the visible region. Further, as shown in FIG. 5, the reflecting mirror reflects 90% of the near-ultraviolet region and absorbs visible light or has a reflection characteristic of 10% or less. The reflecting mirror is formed as an ultraviolet reflecting mirror by, for example, subjecting a surface of aluminum to a mirror surface treatment, and further covering about 14 to 25 optical multilayer films on the surface of the mirror surface treatment. According to the ultraviolet irradiation device, since the ultraviolet light is efficiently reflected and the reflection of visible light is slight, it is possible to visually recognize the entire display surface and clearly recognize the characters and designs.
【００１１】また透光フィルターから照射される紫外線
と可視光の混光割合を、２０対１以下の比率で構成して
ある。Further, the mixing ratio of the ultraviolet light and the visible light irradiated from the light transmitting filter is set at a ratio of 20: 1 or less.
【００１２】次に上記した紫外線照射装置を道路標識の
照明として使用した実験結果を説明する。 ［実験条件］ 図１における道路標識と紫外線照射装置の間隔は１０
ｍとして構成してある。 道路標識の下地部分は青色塗装とし、文字と図柄部分
は蛍光塗料を被着して構成してある。 照射器から照射される紫外線と可視光の混光割合。 混合比 ４０：１ ２０：１ １５：１ １０：
１ フィルターの可視光の平均透過率（％） １．５ １．０ ０．５ ０．１ 反射鏡の紫外線反射率（％） ３０ ６０ ９０ 光源 ４００ワットのメタルハライドランプ（分光特性 図6
に示すとおり） 評価者：１０人 評価区分 Ａ：大変良い Ｂ：良い Ｃ：悪いNext, a description will be given of the results of an experiment in which the above-described ultraviolet irradiation device was used as illumination of a road sign. [Experiment conditions] The distance between the road sign and the ultraviolet irradiation device in FIG.
m. The base of the road sign is painted blue, and the letters and design are coated with fluorescent paint. Light mixing ratio of ultraviolet light and visible light emitted from the irradiator. Mixing ratio 40: 1 20: 1 15: 1 10:
1 Average transmittance of visible light of filter (%) 1.5 1.0 0.5 0.1 Ultraviolet reflectance of reflector (%) 30 60 90 Light source 400 watt metal halide lamp (spectral characteristics FIG. 6
Evaluator: 10 Evaluation categories A: Very good B: Good C: Bad
【００１３】［実験結果］ 紫外線と可視光の混光割合が４０：１で、フィルター
の可視光の平均透過率が０．５％で、反射鏡の紫外線反
射率が９０％であると、標識の下地部分には、若干の可
視光が照射され、文字や図柄部分に多量の紫外線が照射
されるので、標識全体を視認し得ると共に文字や図柄を
明確に視認できる。同条件によると、９人の評価者がＡ
で、１人の評価者がＢであった。 紫外線と可視光の混光割合が２０：１で、フィルター
の可視光の平均透過率が０．５％で、反射鏡の紫外線反
射率が９０％であると、と比較し紫外線量は少なくな
るが、８人の評価者がＡで、２人の評価者がＢであっ
た。上記したとでは、標識として十分機能すること
が確認されている。 紫外線と可視光の混光割合が１５：１で、透光フィル
ターの可視光の平均透過率が０．５％で、反射鏡の紫外
線反射率が６０％であると、紫外線量が少なく、標識全
体を認識できるが、文字や図柄部分を明確に認識するこ
とができず、８人の評価者がＢで、２人の評価者がＣで
あった。 紫外線と可視光の混光割合が１０：１で、フィルター
の可視光の平均透過率が１．０％で、反射鏡の紫外線反
射率が６０％であると、紫外線量が減少し可視光が増大
するので、に比較しさらに文字や図柄部分を明確に認
識することができず、２人の評価者がＢで、８人の評価
者がＣであった。[Experimental Results] When the mixing ratio of ultraviolet light and visible light is 40: 1, the average visible light transmittance of the filter is 0.5%, and the ultraviolet reflectance of the reflecting mirror is 90%, the sign is obtained. The base portion is irradiated with a slight amount of visible light, and a large amount of ultraviolet light is irradiated on the characters and patterns, so that the entire sign and the characters and patterns can be clearly recognized. According to the same conditions, 9 evaluators rated A
And one evaluator was B. The ratio of ultraviolet light to visible light is 20: 1, the average visible light transmittance of the filter is 0.5%, and the ultraviolet reflectance of the reflector is 90%. However, eight evaluators were A and two evaluators were B. From the above, it has been confirmed that it functions sufficiently as a marker. When the mixing ratio of ultraviolet light and visible light is 15: 1, the average transmittance of visible light of the light transmitting filter is 0.5%, and the ultraviolet reflectance of the reflecting mirror is 60%, the amount of ultraviolet light is small, Although the entirety could be recognized, characters and design portions could not be clearly recognized, and eight evaluators were B and two evaluators were C. If the mixing ratio of ultraviolet light and visible light is 10: 1, the average transmittance of visible light of the filter is 1.0%, and the ultraviolet reflectance of the reflecting mirror is 60%, the amount of ultraviolet light is reduced and visible light is reduced. Since the number of characters increased, the characters and patterns could not be clearly recognized as compared with, and two evaluators were B and eight evaluators were C.
【００１４】[0014]
【発明の効果】請求項１に記載の本発明によると、表示
面全体が所定の明るさで視認することができ、また文字
や図柄を明確に視認することができ、道路標識や看板等
に使用した場合、気象条件が悪い場合も表示効果が大き
い特別な効果がある。According to the first aspect of the present invention, the entire display surface can be visually recognized at a predetermined brightness, and characters and designs can be clearly recognized, so that it can be used on road signs and signboards. When used, there is a special effect that the display effect is large even when the weather conditions are bad.
【図１】本発明に係る紫外線照射装置の側面図FIG. 1 is a side view of an ultraviolet irradiation device according to the present invention.
【図２】図１に示す紫外線照射装置の実施例図FIG. 2 is an embodiment diagram of the ultraviolet irradiation apparatus shown in FIG.
【図３】図１における透光フィルターの透過率図FIG. 3 is a transmittance diagram of the light-transmitting filter in FIG. 1;
【図４】図３に示す分光フィルターの透過率の一部拡大
図4 is a partially enlarged view of the transmittance of the spectral filter shown in FIG.
【図５】図１における反射鏡の反射率図FIG. 5 is a reflectance diagram of the reflecting mirror in FIG. 1;
【図６】図１における光源の分光特性図FIG. 6 is a spectral characteristic diagram of the light source in FIG.
１ 照射器本体 ２ 反射鏡 ３ 光源 ４ 透光フィルター ５ 道路標識 DESCRIPTION OF SYMBOLS 1 Irradiator main body 2 Reflector 3 Light source 4 Translucent filter 5 Road sign
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｇ０２Ｂ 5/26 Ｇ０２Ｂ 5/26 5/28 5/28 5/30 5/30 Ｇ０９Ｆ 13/02 Ｇ０９Ｆ 13/02 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI G02B 5/26 G02B 5/26 5/28 5/28 5/30 5/30 G09F 13/02 G09F 13/02
Claims (1)
い反射特性を有し、可視光領域に低い反射特性を有する
反射鏡を配置し、また同照射装置本体の前面に、紫外線
領域において分光透過率が高く、可視光領域において分
光透過率の低い透光フィルターを配置し、さらに透光フ
ィルターから照射される紫外線と可視光の混光割合を、
２０対１以下の比率で構成したことを特徴とする紫外線
照射装置。1. A reflector having high reflection characteristics in a near-ultraviolet region and low reflection characteristics in a visible light region is disposed inside an irradiation device main body. Spectral transmittance is high, a light-transmitting filter with low spectral transmittance in the visible light region is arranged, and furthermore, the mixing ratio of ultraviolet light and visible light emitted from the light-transmitting filter is
An ultraviolet irradiation device, wherein the ultraviolet irradiation device has a ratio of 20: 1 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9118626A JPH10301516A (en) | 1997-04-23 | 1997-04-23 | Ultraviolet-ray irradiating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9118626A JPH10301516A (en) | 1997-04-23 | 1997-04-23 | Ultraviolet-ray irradiating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10301516A true JPH10301516A (en) | 1998-11-13 |
Family
ID=14741198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9118626A Pending JPH10301516A (en) | 1997-04-23 | 1997-04-23 | Ultraviolet-ray irradiating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10301516A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021460A (en) * | 2006-07-11 | 2008-01-31 | Iwasaki Electric Co Ltd | Ultraviolet-ray floodlight |
-
1997
- 1997-04-23 JP JP9118626A patent/JPH10301516A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008021460A (en) * | 2006-07-11 | 2008-01-31 | Iwasaki Electric Co Ltd | Ultraviolet-ray floodlight |
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