JPH087643A - Luminaire having photocatalytic function - Google Patents
Luminaire having photocatalytic functionInfo
- Publication number
- JPH087643A JPH087643A JP6139224A JP13922494A JPH087643A JP H087643 A JPH087643 A JP H087643A JP 6139224 A JP6139224 A JP 6139224A JP 13922494 A JP13922494 A JP 13922494A JP H087643 A JPH087643 A JP H087643A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- zinc
- reflecting plate
- metal
- luminaire
- 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.)
- Granted
Links
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 19
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011701 zinc Substances 0.000 claims abstract description 11
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 11
- 229910001297 Zn alloy Inorganic materials 0.000 claims abstract 2
- 239000010419 fine particle Substances 0.000 claims description 25
- 239000004065 semiconductor Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 239000010410 layer Substances 0.000 claims description 20
- 238000007743 anodising Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 2
- 239000011347 resin Substances 0.000 abstract description 7
- 229920005989 resin Polymers 0.000 abstract description 7
- 230000001954 sterilising effect Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 7
- 239000011521 glass Substances 0.000 abstract description 5
- 238000004332 deodorization Methods 0.000 abstract description 4
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000004033 plastic Substances 0.000 abstract description 2
- 239000002023 wood Substances 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 22
- 239000011787 zinc oxide Substances 0.000 description 11
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000011941 photocatalyst Substances 0.000 description 7
- 238000007747 plating Methods 0.000 description 6
- 239000011888 foil Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000008151 electrolyte solution Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 238000002048 anodisation reaction Methods 0.000 description 3
- 230000003373 anti-fouling effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 238000003980 solgel method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Catalysts (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は光触媒活性により殺菌や
防臭、防汚機能を有する照明器具に関するものであり、
詳しくは光触媒活性を有する反射板を用いている照明器
具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device having a sterilizing, deodorizing and antifouling function by photocatalytic activity,
More specifically, the present invention relates to a lighting device using a reflection plate having photocatalytic activity.
【0002】[0002]
【従来の技術】酸化チタンや酸化亜鉛は半導体であるの
で、光触媒活性を示す光触媒体としての応用が報告され
ている。この光触媒活性とは、酸化物半導体微粒子がそ
のバンドギャップ以上のエネルギーを持つ光(一般に紫
外線)を吸収して励起され、発生した電子及び正孔がそ
の粒子表面に吸着している物質と電子授受を行うことに
よりその吸着物質を酸化、あるいは還元して分解させる
活性である。この原理を利用すれば酸化物半導体表面に
付着した細菌、悪臭ガス、有機物等を分解することが可
能であり、殺菌、防臭、防汚などの効果が得られる。2. Description of the Related Art Since titanium oxide and zinc oxide are semiconductors, application as a photocatalyst having photocatalytic activity has been reported. The photocatalytic activity means that the oxide semiconductor fine particles are excited by absorbing light (generally, ultraviolet ray) having energy larger than the band gap, and the generated electrons and holes exchange electrons with the substance adsorbed on the particle surface. Is an activity to oxidize or reduce the adsorbed substance to decompose it. By using this principle, it is possible to decompose bacteria, malodorous gas, organic matter and the like attached to the surface of the oxide semiconductor, and obtain effects such as sterilization, deodorization and antifouling.
【0003】これまでにも光触媒体と紫外線光源との組
み合わせを利用した防臭器、空気清浄器、冷蔵庫等につ
いて多数の特許が出願公開されているが、これらにおい
て光源は光触媒体を働かせるための光源として利用され
ているものであって、被分解物がない場合にはほとんど
役目を果たさない。更に、光触媒体と紫外線光源との組
み合わせの利用については特開平4−307065号公
報、特開平4−307066号公報等に開示されている
が、これらの場合も光を照射することによって室内に多
少の照明効果はあるが間接照明であって、これを照明器
具として用いるには実用に耐え得ないものである。A number of patents have been filed and published for deodorizers, air purifiers, refrigerators, etc. that utilize a combination of a photocatalyst and an ultraviolet light source. In these, the light source is a light source for activating the photocatalyst. It has little use if it does not have a substance to be decomposed. Further, the use of a combination of a photocatalyst and an ultraviolet light source is disclosed in JP-A-4-307065, JP-A-4-307066, etc., but in these cases as well, by irradiating light, the inside of the room is slightly increased or decreased. However, it is indirect lighting, and it is not practical to use it as a lighting fixture.
【0004】また、蛍光灯に微粒の酸化亜鉛を塗布して
紫外線を吸収させる方法が特開平2−216751号公
報、特開平2−253554号公報、特開平3−209
55号公報等に開示されているが、これは紫外線吸収の
みを目的としたものであり、酸化亜鉛は塗料で覆われて
いるため光触媒機能は有していない。更に、可視領域で
高い反射率を有する光触媒体膜、並びにその固定方法に
ついてはこれまでのところ適した技術がない。Further, a method of applying fine zinc oxide particles to a fluorescent lamp to absorb ultraviolet rays is disclosed in JP-A-2-216751, JP-A-2-253554, and JP-A-3-209.
As disclosed in Japanese Patent Laid-Open No. 55-55, this is for the purpose of absorbing only ultraviolet rays, and zinc oxide does not have a photocatalytic function because it is covered with paint. Further, there is no suitable technique so far for the photocatalyst film having a high reflectance in the visible region and the fixing method thereof.
【0005】[0005]
【発明が解決しようとする課題】可視領域での反射率の
高い半導体微粒子層を表面に固定した反射板を紫外線も
発光する光源近傍に設けることにより、光触媒機能と照
明機能とを兼備した照明器具が提供できることになる。
このような照明器具を用いれば建築物内の照明を兼ね、
建築物内の殺菌、脱臭、防汚が可能になる。そのために
は、半導体微粒子がその表面を樹脂などで覆われること
なしで強固に固定できること、半導体微粒子層は紫外線
吸収能が高く且つ可視領域での反射率が高いことなどが
必要条件として挙げられる。半導体微粒子を固定させる
方法としては、樹脂や塗料等の有機物中に分散させて固
定化する方法が考えられるが、この場合には酸化物微粒
子表面が樹脂等で覆われるために被分解物が半導体微粒
子と接触できず、そのため電子や正孔の授受ができず、
光触媒機能は生じない。また、ゾルゲル法やスパッタ法
により半導体酸化物膜を成膜する方法があるが、これら
の方法で得られた膜は可視領域では光の浸透率がよく透
明に見えてしまう。A luminaire having both a photocatalytic function and a lighting function is provided by providing a reflector having a semiconductor fine particle layer having a high reflectance in the visible region fixed on the surface in the vicinity of a light source which also emits ultraviolet rays. Will be provided.
If you use such a lighting fixture, it will also serve as lighting in the building,
It enables sterilization, deodorization, and antifouling inside the building. For that purpose, the semiconductor fine particles can be firmly fixed without being covered with a resin or the like, and the semiconductor fine particle layer has a high ultraviolet absorbing ability and a high reflectance in the visible region. As a method of fixing the semiconductor fine particles, a method of dispersing and fixing it in an organic substance such as a resin or a paint can be considered. In this case, since the oxide fine particle surface is covered with the resin or the like, the substance to be decomposed is a semiconductor. Because it cannot contact the particles, it cannot transfer electrons or holes,
No photocatalytic function occurs. Further, there are methods of forming a semiconductor oxide film by a sol-gel method or a sputtering method, but the film obtained by these methods has a high light transmittance in the visible region and appears transparent.
【0006】[0006]
【課題を解決するための手段】本発明者等は、上記の課
題を解決するために鋭意検討の結果、金属板、金属シー
ト、金属箔等を陽極酸化処理してその表面に酸化物微粒
子層を形成し、このように処理して得た金属板、金属シ
ート、金属箔等を光が反射するような構造にして、紫外
線をも発光する光源の近傍に配置することによって光触
媒機能と照明機能とを兼備した照明器具が得られること
を見い出し、本発明を完成した。Means for Solving the Problems As a result of intensive studies for solving the above problems, the present inventors have conducted anodization treatment on a metal plate, a metal sheet, a metal foil or the like to form an oxide fine particle layer on the surface thereof. By forming a metal plate, a metal sheet, a metal foil, etc. obtained by the above treatment, which has a structure in which light is reflected, and is arranged in the vicinity of a light source that also emits ultraviolet rays, a photocatalytic function and a lighting function are obtained. The present invention has been completed by finding that a luminaire having both and can be obtained.
【0007】即ち、本発明の光触媒機能を備えた照明器
具は、表面層として金属の陽極酸化処理によって得られ
る酸化物半導体微粒子層を有する基板を光反射板として
用いていることを特徴とする。That is, the luminaire having a photocatalytic function of the present invention is characterized in that a substrate having an oxide semiconductor fine particle layer obtained by anodizing a metal as a surface layer is used as a light reflecting plate.
【0008】本発明において光反射板として用いる基板
は、その表面に金属の陽極酸化処理によって得られた酸
化物半導体微粒子層を有するものであり、その形状は各
々の照明器具に適した反射板の形状である。また基板の
材質については全体が金属であっても、あるいは大部分
がガラス、プラスチック、木材、強化紙、布等の非金属
材料でその上に金属層があり、更にその上に酸化物半導
体微粒子層があるものであってもよい。The substrate used as the light reflection plate in the present invention has an oxide semiconductor fine particle layer obtained by anodizing the metal on the surface thereof, and its shape is that of a reflection plate suitable for each lighting fixture. The shape. Regarding the material of the substrate, even if the whole is a metal, or most of it is a non-metal material such as glass, plastic, wood, reinforced paper, cloth, etc., and has a metal layer on it, and on top of that there is oxide semiconductor fine particles. There may be layers.
【0009】本発明において酸化物半導体微粒子層を形
成するために陽極酸化処理される金属としては金属、合
金、もしくは表面に鍍金、溶射等によって付与された金
属又は合金等を含み、要は陽極酸化処理によって酸化物
半導体微粒子層が形成されるものであれば如何なるもの
でもよく、例えばチタン、亜鉛、スズ、鉄等、あるいは
それらの金属を含む合金がある。例えば酸化チタン半導
体微粒子層を作るにはチタン板、酸化亜鉛半導体微粒子
層を作るには亜鉛板もしくは亜鉛鍍金板を用いれば良
い。とりわけ亜鉛では、溶融鍍金、電気鍍金等により鉄
板上に亜鉛鍍金すること(いわゆるトタン板)が容易か
つ安価であり、また陽極酸化により良質の膜が得られ
る。鍍金板は、溶融鍍金、電気鍍金、無電解鍍金などが
考えられる。また樹脂、ガラス等の表面に金属を溶射し
た後これを陽極酸化処理したものでも同様の結果が得ら
れる。In the present invention, the metal to be anodized to form the oxide semiconductor fine particle layer includes a metal, an alloy, or a metal or alloy applied to the surface by plating, thermal spraying, etc. Any material may be used as long as the oxide semiconductor fine particle layer is formed by the treatment, and examples thereof include titanium, zinc, tin, iron and the like, or alloys containing those metals. For example, a titanium plate may be used to form the titanium oxide semiconductor fine particle layer, and a zinc plate or a zinc plated plate may be used to form the zinc oxide semiconductor fine particle layer. In particular, with zinc, it is easy and inexpensive to perform zinc plating on an iron plate (so-called galvanized sheet) by molten plating, electroplating or the like, and a good quality film can be obtained by anodic oxidation. The plating plate may be molten plating, electric plating, electroless plating, or the like. Similar results can be obtained by spraying a metal on the surface of resin, glass or the like and then subjecting this to anodization.
【0010】陽極酸化処理は従来から一般に用いられて
いる条件下で実施されるものであり、電解液中で金属
板、箔等に電解電圧を印荷して陽極酸化することによっ
て微粒の酸化物からなる膜が得られる。陽極電解処理は
ゾルゲル法のような加熱やスパッタのような真空も必要
としないので、容易かつ安価に微粒子層を成膜すること
ができる。陽極酸化処理によって得られる膜は強固であ
り、板を折曲げても剥がれることはなく、成膜後の形状
の加工は可能である。また、電解液組成、電解条件を選
択することによって微粒子からなる白色の成膜が可能で
あり、可視領域での反射率も高く反射板として適してい
る。The anodizing treatment is carried out under the conditions generally used in the past. Fine particles of oxide are produced by applying an electrolytic voltage to a metal plate, foil or the like in an electrolytic solution and anodizing. A film consisting of Since the anodic electrolytic treatment does not require heating such as the sol-gel method and vacuum such as sputtering, the fine particle layer can be easily and inexpensively formed. The film obtained by anodizing treatment is strong, does not peel off even when the plate is bent, and can be processed into the shape after film formation. In addition, a white film made of fine particles can be formed by selecting the composition of the electrolytic solution and the electrolysis conditions, and the reflectance in the visible region is high, and the film is suitable as a reflector.
【0011】本発明において光反射板として用いる基板
は、各々の照明器具に適した反射板の形状に加工した後
に陽極酸化処理によって表面に酸化物半導体微粒子層を
形成したものであっても、または陽極酸化処理によって
表面に酸化物半導体微粒子層を形成した後に各々の照明
器具に適した反射板の形状に加工したものであっても、
あるいは金属箔、薄い金属シート等の柔軟性、可撓性に
優れた金属材料を陽極酸化処理して表面に酸化物半導体
微粒子層を形成した箔、シート等を、各々の照明器具に
適した反射板の形状に加工した基体に貼付したものであ
ってもよい。なお、「光反射板」の形状は、高反射率を
得るためには板状のものが適するが、デザインや集光、
減光、散乱などのためには平板状以外の波状板、網状、
筒状、コーン状、凹面などとすることもできる。The substrate used as the light reflection plate in the present invention may be one in which an oxide semiconductor fine particle layer is formed on the surface by anodizing after processing into a shape of the reflection plate suitable for each lighting fixture, or Even if processed into the shape of a reflector suitable for each lighting fixture after forming an oxide semiconductor fine particle layer on the surface by anodizing treatment,
Alternatively, a metal foil, thin metal sheet, or other flexible or flexible metal material that has been subjected to anodizing treatment to form an oxide semiconductor fine particle layer on the surface of the foil or sheet is used as a reflective material suitable for each lighting fixture. It may be attached to a substrate processed into a plate shape. The shape of the "light reflection plate" is preferably a plate shape in order to obtain a high reflectance,
For dimming, scattering, etc., corrugated plate other than flat plate, mesh,
It may be cylindrical, cone-shaped, concave, or the like.
【0012】本発明の光触媒機能を備えた照明器具が有
効に機能するためには、その照明光源が可視光及び紫外
線を発光するものである必要がある。このような光源と
しては水銀灯、ブラックライト、蛍光灯などあらゆるも
のが考えられ、また光源の形状も棒状、球状、リング状
等の如何なる形状であってもよい。In order for the luminaire having the photocatalytic function of the present invention to function effectively, the illuminating light source must emit visible light and ultraviolet light. As such a light source, all kinds such as a mercury lamp, a black light and a fluorescent lamp are conceivable, and the shape of the light source may be any shape such as a rod shape, a spherical shape, a ring shape and the like.
【0013】本発明の光触媒機能を備えた照明器具が有
効に機能するためには、その光反射板が光源の近傍に配
置されていることが必要である。「光源の近傍」とは、
光源から発光された可視光及び紫外線が十分に照射でき
る位置、すなわち光源形状によって異なるが、建築物内
で用いる照明においては光源から1メートル以内、望ま
しくは0.5メートル以内を意味する。In order for the luminaire having the photocatalytic function of the present invention to function effectively, it is necessary that the light reflecting plate thereof be arranged near the light source. "Near the light source" means
Although it depends on the position where the visible light and the ultraviolet light emitted from the light source can be sufficiently irradiated, that is, depending on the shape of the light source, it means within 1 meter, preferably within 0.5 meter from the light source in lighting used in a building.
【0014】[0014]
実施例1 脱脂洗浄した亜鉛板(10cm×10cm、厚さ1m
m、裏面はビニールテープで被覆)を電解溶液(水酸化
ナトリウム8g、硝酸ナトリウム16g、水1リット
ル)中に入れてこれを陽極とし、陰極としてステンレス
板(10cm×10cm)を使用し、両電極間の距離を
10cmとし、直流電圧20Vを20分間印荷して陽極
酸化した。その後これを洗浄、乾燥して酸化亜鉛被膜付
板を得た。この酸化亜鉛被膜付板の表面は白色であり、
またX線回折ならびに透過電子顕微鏡観察で微粒子(平
均粒径20nm未満)の酸化亜鉛が析出していることが
確認された。また被膜の厚さは約1μmであった。Example 1 Degreased and washed zinc plate (10 cm x 10 cm, thickness 1 m
m, the backside is coated with vinyl tape) in an electrolytic solution (8 g of sodium hydroxide, 16 g of sodium nitrate, 1 liter of water), which is used as an anode, and a stainless steel plate (10 cm x 10 cm) is used as a cathode. The distance was set to 10 cm, and a DC voltage of 20 V was applied for 20 minutes for anodization. Thereafter, this was washed and dried to obtain a zinc oxide coated plate. The surface of this zinc oxide coated plate is white,
In addition, it was confirmed by X-ray diffraction and transmission electron microscope observation that fine particles (average particle size of less than 20 nm) of zinc oxide were deposited. The thickness of the coating was about 1 μm.
【0015】この被膜の反射スペクトルを測定したとこ
ろ、可視領域光を良好に反射し、バンドギャップである
380nm以下の紫外線は完全に吸収していた。この膜
は可視光の反射板として十分な性能を有している。When the reflection spectrum of this coating was measured, it was found that light in the visible region was well reflected and that ultraviolet rays having a band gap of 380 nm or less were completely absorbed. This film has sufficient performance as a visible light reflector.
【0016】密封したガラス容器(容積10リットル、
ガス注入採取口付)内に昼光色蛍光灯(15W)を接続
した点灯装置を設置し、さらに蛍光灯管表面から最近距
離2センチメートルになる位置に5×20センチメート
ルの上記の酸化亜鉛被膜付板を設置した。この蛍光灯及
び酸化亜鉛被膜付板からなる照明器具を用いて光触媒能
を測定した。Sealed glass container (volume 10 liters,
Installed a lighting device with a daylight color fluorescent lamp (15W) connected inside (with gas injection sampling port), and with the above-mentioned zinc oxide coating of 5 × 20 cm at a position 2 cm closest to the surface of the fluorescent lamp tube. Installed the board. The photocatalytic activity was measured using the luminaire including the fluorescent lamp and the zinc oxide coated plate.
【0017】この密封容器にアセトアルデヒドガスを入
れ、本発明による蛍光灯を点灯させてアセトアルデヒド
を分解させ、その分解量をガスクロマトグラフで測定し
た。ここで被処理ガスとしてアセトアルデヒドを用いた
が、これは細菌や有機物の分解能力指標として一般に用
いられるものである。従ってここで得られた結果は殺菌
能力や脱臭能力に相当する。アセトアルデヒドガスを容
器中で50ppmになるように注入した後紫外線照射を
開始したところ60分後に5ppmまで減少させること
ができ、光触媒により分解されていることが確認され
た。Acetaldehyde gas was placed in this sealed container, the fluorescent lamp according to the present invention was turned on to decompose acetaldehyde, and the amount of decomposition was measured by gas chromatography. Here, acetaldehyde was used as the gas to be treated, but this is generally used as an index for decomposing ability of bacteria and organic substances. Therefore, the results obtained here correspond to sterilizing ability and deodorizing ability. When acetaldehyde gas was injected into the container at 50 ppm and ultraviolet irradiation was started, it was possible to reduce it to 5 ppm after 60 minutes, and it was confirmed that it was decomposed by the photocatalyst.
【0018】実施例2 図1に示すような、反射板として塩化ビニル樹脂板2を
用いている市販の卓上用蛍光灯照明器具のその反射板
(12cm×44cm)の蛍光灯側の面(内面)に亜鉛
金属粒子(平均粒径3μm)をアルゴン溶射して亜鉛金
属層3を形成させた。これを実施例1で用いた電解液、
電解条件を用いて陽極酸化処理してその表面に酸化亜鉛
半導体微粒子層4を形成させたた。この反射板は溶射時
にやや酸化されたため完全には陽極酸化されなかったが
白色を呈していた。この蛍光灯反射板および蛍光灯部1
を密閉したガラス容器に入れ、実施例1に示す条件下で
50ppmのアセトアルデヒドガスの光触媒分解速度を
測定した結果、120分後に5ppmまで減少させるこ
とができた。Example 2 As shown in FIG. 1, the surface (inner surface) on the fluorescent lamp side of the reflector (12 cm × 44 cm) of a commercially available fluorescent lamp for a desk lamp using a vinyl chloride resin plate 2 as a reflector. 2), zinc metal particles (average particle size 3 μm) were sprayed with argon to form a zinc metal layer 3. The electrolytic solution used in Example 1,
The zinc oxide semiconductor fine particle layer 4 was formed on the surface by anodizing treatment using electrolysis conditions. This reflector was not completely anodized because it was slightly oxidized during spraying, but it was white. This fluorescent lamp reflector and fluorescent lamp section 1
Was placed in a closed glass container, and the photocatalytic decomposition rate of acetaldehyde gas at 50 ppm was measured under the conditions shown in Example 1. As a result, it was possible to reduce the rate to 5 ppm after 120 minutes.
【0019】[0019]
【発明の効果】本発明による照明器具は、被分解ガスが
接触する場合には光触媒体として働く一方、従来の蛍光
灯等の照度をほとんど減少させることがなく、照明器具
として十分な明るさを有している。さらに半導体微粒子
が紫外線を吸収するので本発明器具を用いることによっ
て被照明物の紫外線による劣化を防ぐことができる。本
発明による照明装置は、生鮮食料品等の陳列品の殺菌、
脱臭、紫外線による劣化防止に有用である。The luminaire according to the present invention acts as a photocatalyst when the gas to be decomposed comes into contact therewith, but does not substantially reduce the illuminance of conventional fluorescent lamps, etc., and has sufficient brightness as a luminaire. Have Further, since the semiconductor fine particles absorb ultraviolet rays, deterioration of the illuminated object due to ultraviolet rays can be prevented by using the device of the present invention. The lighting device according to the present invention is for sterilizing display items such as fresh foods,
It is useful for deodorization and prevention of deterioration due to ultraviolet rays.
【図1】本発明の光触媒機能を備えた照明器具の一実施
例を示す概略断面図である。FIG. 1 is a schematic cross-sectional view showing an embodiment of a lighting fixture having a photocatalytic function of the present invention.
1 光源(蛍光灯) 2 塩化ビニル樹脂板 3 亜鉛金属層 4 酸化亜鉛半導体微粒子層 1 Light source (fluorescent lamp) 2 Vinyl chloride resin plate 3 Zinc metal layer 4 Zinc oxide semiconductor fine particle layer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山口 靖英 埼玉県上尾市原市1333−2 三井金属鉱業 株式会社総合研究所内 (72)発明者 藤嶋 昭 神奈川県川崎市中原区中丸子710番地5 (72)発明者 橋本 和仁 神奈川県横浜市栄区小菅ケ谷町2000番地の 10 南小菅ケ谷住宅2棟506 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhide Yamaguchi 1333-2 Ageo City, Saitama Prefecture, Mitsui Mining & Smelting Co., Ltd. (72) Inventor Akira Fujishima 710-5, Nakamaruko, Nakahara-ku, Kawasaki City, Kanagawa Prefecture (72) Inventor Kazuhito Hashimoto 10 Minami-Kosugaya Houses, 2 houses, 506, Kosugaya-cho, Sakae-ku, Yokohama-shi, Kanagawa 506
Claims (2)
て得られる酸化物半導体微粒子層を有する基板を光反射
板として用いていることを特徴とする光触媒機能を備え
た照明器具。1. A luminaire having a photocatalytic function, wherein a substrate having an oxide semiconductor fine particle layer obtained by anodizing a metal as a surface layer is used as a light reflecting plate.
記載の光触媒機能を備えた照明器具。2. The metal is zinc or a zinc alloy.
A luminaire having the described photocatalytic function.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6139224A JP2832239B2 (en) | 1994-06-21 | 1994-06-21 | Lighting equipment with photocatalytic function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6139224A JP2832239B2 (en) | 1994-06-21 | 1994-06-21 | Lighting equipment with photocatalytic function |
Publications (2)
Publication Number | Publication Date |
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JPH087643A true JPH087643A (en) | 1996-01-12 |
JP2832239B2 JP2832239B2 (en) | 1998-12-09 |
Family
ID=15240394
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP6139224A Expired - Lifetime JP2832239B2 (en) | 1994-06-21 | 1994-06-21 | Lighting equipment with photocatalytic function |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997000134A1 (en) * | 1995-06-19 | 1997-01-03 | Nippon Soda Co., Ltd. | Photocatalyst-carrying structure and photocatalyst coating material |
JPH09231821A (en) * | 1995-12-22 | 1997-09-05 | Toto Ltd | Luminaire and method for maintaining illuminance |
JPH11100695A (en) * | 1997-09-26 | 1999-04-13 | Nippon Alum Co Ltd | Production of titanium material having photocatalytic activity |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103334133B (en) * | 2013-06-21 | 2015-09-02 | 深圳市通用科技有限公司 | A kind of electroplating manufacturing process method of lamp reflector cup |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0330314U (en) * | 1989-07-31 | 1991-03-26 | ||
JPH0549861A (en) * | 1991-08-21 | 1993-03-02 | Mitsui Eng & Shipbuild Co Ltd | Sheet-type environment purifying device |
JPH05305125A (en) * | 1992-04-30 | 1993-11-19 | Matsushita Seiko Co Ltd | Hydraulic sterilizer and ultrasonic humidifier |
JPH07111104A (en) * | 1992-08-14 | 1995-04-25 | Akira Fujishima | Lighting system |
-
1994
- 1994-06-21 JP JP6139224A patent/JP2832239B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0330314U (en) * | 1989-07-31 | 1991-03-26 | ||
JPH0549861A (en) * | 1991-08-21 | 1993-03-02 | Mitsui Eng & Shipbuild Co Ltd | Sheet-type environment purifying device |
JPH05305125A (en) * | 1992-04-30 | 1993-11-19 | Matsushita Seiko Co Ltd | Hydraulic sterilizer and ultrasonic humidifier |
JPH07111104A (en) * | 1992-08-14 | 1995-04-25 | Akira Fujishima | Lighting system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997000134A1 (en) * | 1995-06-19 | 1997-01-03 | Nippon Soda Co., Ltd. | Photocatalyst-carrying structure and photocatalyst coating material |
JPH09231821A (en) * | 1995-12-22 | 1997-09-05 | Toto Ltd | Luminaire and method for maintaining illuminance |
JPH11100695A (en) * | 1997-09-26 | 1999-04-13 | Nippon Alum Co Ltd | Production of titanium material having photocatalytic activity |
Also Published As
Publication number | Publication date |
---|---|
JP2832239B2 (en) | 1998-12-09 |
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