JPH11319579A - Photocatalytic body and illuminator - Google Patents
Photocatalytic body and illuminatorInfo
- Publication number
- JPH11319579A JPH11319579A JP10132916A JP13291698A JPH11319579A JP H11319579 A JPH11319579 A JP H11319579A JP 10132916 A JP10132916 A JP 10132916A JP 13291698 A JP13291698 A JP 13291698A JP H11319579 A JPH11319579 A JP H11319579A
- Authority
- JP
- Japan
- Prior art keywords
- photocatalytic
- film
- photocatalyst
- underlayer
- aluminum oxide
- 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 abstract description 60
- 239000011941 photocatalyst Substances 0.000 claims abstract description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 25
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 15
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910001887 tin oxide Inorganic materials 0.000 claims abstract description 8
- 239000010419 fine particle Substances 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 abstract description 15
- 238000002834 transmittance Methods 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 3
- 239000002075 main ingredient Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 239000012798 spherical particle Substances 0.000 abstract 1
- 238000009736 wetting Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 10
- 239000002245 particle Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000001877 deodorizing effect Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 239000011882 ultra-fine particle Substances 0.000 description 3
- 238000004438 BET method Methods 0.000 description 2
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910002367 SrTiO Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- -1 WO 3 Inorganic materials 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 230000003373 anti-fouling effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000208125 Nicotiana Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 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
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical group 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Catalysts (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は光触媒体およびこれ
を用いた照明器具に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photocatalyst and a lighting fixture using the same.
【０００２】[0002]
【従来の技術】消臭、防汚およびまたは抗菌を行うため
に、光触媒膜を用いること知られている。2. Description of the Related Art It is known to use photocatalytic films for deodorizing, antifouling and / or antibacterial.
【０００３】光触媒膜は、紫外線照射を受けて、その光
エネルギーを吸収すると、光触媒膜を構成して光触媒作
用を呈する半導体に電子とホールが生成する。電子とホ
ールは、膜表面にある酸素や水と反応して活性酸素や他
の活性なラジカルなどを生じ、有機物からなる汚れや臭
いの成分を酸化還元して分解する。When a photocatalytic film is irradiated with ultraviolet rays and absorbs its light energy, electrons and holes are generated in a semiconductor which forms the photocatalytic film and exhibits a photocatalytic action. The electrons and holes react with oxygen and water on the film surface to generate active oxygen and other active radicals, and redox and decompose organic dirt and odor components.
【０００４】近時、光触媒膜の有用性に注目して、建
材、照明器具およびランプなど幅広い物品に光触媒膜を
形成しようとする動きが活発である。In recent years, attention has been paid to the usefulness of photocatalytic films, and there is an active movement to form photocatalytic films on a wide range of articles such as building materials, lighting fixtures and lamps.
【０００５】光触媒膜の基体が有機質の場合には、基体
が光触媒膜の分解作用によって劣化するという問題があ
る。When the substrate of the photocatalytic film is organic, there is a problem that the substrate is deteriorated by the decomposition action of the photocatalytic film.
【０００６】そこで、基体が有機質の場合には、基体と
光触媒膜との間に酸化ケイ素からなる下地層を介在させ
て、光触媒膜が直接基体に接触しないようにする。Therefore, when the substrate is organic, an underlayer made of silicon oxide is interposed between the substrate and the photocatalyst film to prevent the photocatalyst film from directly contacting the substrate.
【０００７】[0007]
【発明が解決しようとする課題】ところが、従来のこの
ような構成の光触媒膜は透明性、付着力および平滑性な
どに問題があり、実用性に欠けることが分かった。However, it has been found that the conventional photocatalytic film having such a structure has problems in transparency, adhesion, smoothness, and the like, and lacks practicality.
【０００８】本発明は、光透過率が良好であるととも
に、光触媒膜の基体に対する付着力および平滑性を向上
させた有機質の基体を用いた光触媒体およびこれを用い
た照明器具を提供することを主な目的とする。It is an object of the present invention to provide a photocatalyst using an organic substrate having good light transmittance and improved adhesion and smoothness of the photocatalyst film to the substrate, and a lighting fixture using the same. Main purpose.
【０００９】[0009]
【課題を達成するための手段】請求項１の発明の光触媒
体は、有機質の基体と；基体の表面に形成された二酸化
ケイ素および酸化アルミニウムを含む下地層と；下地層
を介して基体に形成された光触媒膜と；を具備している
ことを特徴としている。The photocatalyst according to the first aspect of the present invention comprises: an organic substrate; an underlayer containing silicon dioxide and aluminum oxide formed on the surface of the substrate; And a photocatalyst film provided.
【００１０】本発明および以下の各発明において、特に
指定しない限り用語の定義および技術的意味は次によ
る。In the present invention and each of the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.
【００１１】基体について基体は、光触媒膜を担持する
もので、専ら光触媒膜担持を目的とする部材はもちろん
のこと、元来光触媒の担持を目的としない他の機能のた
めに形成されるもの（以下、「機能材」という。）であ
ることを許容する。The substrate supports the photocatalyst film and is formed not only for the purpose of supporting the photocatalyst film but also for other functions not originally intended for the support of the photocatalyst ( Hereinafter, it will be referred to as “functional material”).
【００１２】機能材としては、たとえば天井パネルなど
の建築材や、家電機器または照明用器材などさまざまな
任意所望の有機質の部材を基体とすることができる。As the functional material, a base material may be any desired and desired organic material such as a building material such as a ceiling panel, a home appliance or a lighting device.
【００１３】基体の材料としては、合成樹脂、繊維およ
び木材などであることを許容するが、特に透明質合成樹
脂が効果的である。As the material of the substrate, synthetic resins, fibers, woods and the like are allowed, but transparent synthetic resins are particularly effective.
【００１４】下地層について本発明においては、光触媒
膜を直接基体表面に被着しないで、下地層を介して基体
に形成する。下地層は、二酸化ケイ素および酸化アルミ
ニウムを含んで構成されている。この構成によると、酸
化アルミニウムの粒子が二酸化ケイ素によって結合され
た状態になって、酸化アルミニウム粒子が下地層の表面
に露出するため、光触媒膜を形成する際の有機溶剤との
濡れ性が向上する。Regarding the Underlayer In the present invention, the photocatalyst film is formed on the substrate via the underlayer without directly adhering to the surface of the substrate. The underlayer includes silicon dioxide and aluminum oxide. According to this configuration, the aluminum oxide particles are bonded by the silicon dioxide, and the aluminum oxide particles are exposed on the surface of the underlayer, so that the wettability with the organic solvent when forming the photocatalytic film is improved. .
【００１５】二酸化ケイ素に対する酸化アルミニウムの
割合ＳｉＯ2：Ａｌ2Ｏ3は重量比で、一般的には７：３
〜３：７がよく、最適には６：４〜４：６である。酸化
アルミニウムの添加量が少ないと、有機溶剤との濡れ性
が悪くなって光触媒膜の付着力が低下するとともに、下
地層の平滑性も悪くなる傾向がある。反対に、酸化アル
ミニウムの添加量が多すぎると、下地層の平滑性が悪く
なる。The ratio of aluminum oxide to silicon dioxide, SiO 2 : Al 2 O 3, is a weight ratio, generally 7: 3.
３3: 7 is good, and optimally is 6: 4〜4: 6. When the addition amount of aluminum oxide is small, wettability with an organic solvent is deteriorated, adhesion of the photocatalyst film is reduced, and smoothness of the underlayer tends to be deteriorated. Conversely, if the amount of aluminum oxide added is too large, the smoothness of the underlayer deteriorates.
【００１６】光触媒膜について光触媒物質は、４００ｎ
ｍ以下特に好適には３４０ｎｍ以下の短波長の光の照射
を受けると、活性化されて触媒作用を呈する半導体物質
である。光触媒膜の成分として、以下の光触媒物質を用
いることができる。ＴｉＯ、2ＷＯ3、ＬａＲｈＰ3、Ｆ
ｅＴｉＯ3、Ｆｅ2Ｏ3、ＣｄＦｅ2Ｏ4、ＳｒＴｉＯ3、Ｃ
ｄＳｅ、ＧａＡｓ、ＧａＰ、ＲｕＯ2、ＺｎＯ、Ｃｄ
Ｓ、ＭｏＳ3、ＬａＲｈＯ3、ＣｄＦｅＯ3、Ｂｉ2Ｏ3、
ＭｏＳ2、Ｉｎ2Ｏ3、ＣｄＯ、ＳｎＯ2などである。これ
らの物質を一種または複数種を混合して用いることがで
きる。The photocatalyst substance is 400 n
It is a semiconductor substance that is activated and exhibits a catalytic action when irradiated with light having a short wavelength of 340 nm or less, particularly preferably 340 nm or less. The following photocatalytic substances can be used as components of the photocatalytic film. TiO, 2 WO 3 , LaRhP 3 , F
eTiO 3 , Fe 2 O 3 , CdFe 2 O 4 , SrTiO 3 , C
dSe, GaAs, GaP, RuO 2 , ZnO, Cd
S, MoS 3 , LaRhO 3 , CdFeO 3 , Bi 2 O 3 ,
MoS 2 , In 2 O 3 , CdO, SnO 2 and the like. These substances can be used alone or in combination of two or more.
【００１７】なお、ＴｉＯ2、ＷＯ3、ＳｒＴｉＯ2、Ｆ
ｅ2Ｏ3、ＣｄＳ、ＭｏＳ3、Ｂｉ2Ｏ3、ＭｏＳ2、Ｉｎ2
Ｏ3、ＣｄＯなどは等価電子帯のレドックス・ポテンシ
ャルの絶対値が伝導帯のレドックス・ポテンシャルの絶
対値よりも大きいため、酸化力の方が還元力よりも大き
く、有機化合物の分解による消臭作用、防汚作用または
抗菌作用に優れている。Note that TiO 2 , WO 3 , SrTiO 2 , F
e 2 O 3 , CdS, MoS 3 , Bi 2 O 3 , MoS 2 , In 2
Since the absolute value of the redox potential of the equivalent electronic band of O 3 and CdO is larger than the absolute value of the redox potential of the conduction band, the oxidizing power is larger than the reducing power, and the deodorizing effect due to the decomposition of the organic compound is obtained. Excellent antifouling action or antibacterial action.
【００１８】また、上記各物質の中で原料コストの面に
おいては、Ｆｅ2Ｏ3およびＺｎＯが優れている。[0018] Among the above substances, Fe 2 O 3 and ZnO are superior in terms of raw material cost.
【００１９】さらにまた、本発明において、光触媒物質
は、超微粒子の形で用いることができる。超微粒子と
は、平均粒径が２０ｎｍ以下の極めて細かい微粒子をい
い、好ましくは微粒子の形状がなるべく球形に近く、し
かも粒径のばらつきが少なくて結晶性の良好な微粒子で
ある。Furthermore, in the present invention, the photocatalytic substance can be used in the form of ultrafine particles. The ultrafine particles are extremely fine particles having an average particle diameter of 20 nm or less, and are preferably fine particles having a shape as close as possible to a sphere and having a small variation in particle diameter and good crystallinity.
【００２０】さらにまた、本発明において、光触媒膜
は、基体が有機質のため、高温での焼成によって下地層
を介して基体に付着させる方法を採用することができな
いので、たとえば光触媒物質の超微粒子の分散液をディ
ップ法、スプレー法などにより基体の下地層の上に塗布
し、乾燥後有機質の基体が変質ないし分解しない程度の
低温で焼成するなどの方法によって付着させる。Furthermore, in the present invention, the photocatalytic film cannot be formed by a method in which the photocatalytic film is adhered to the substrate via a base layer by baking at a high temperature because the substrate is organic. The dispersion is applied onto the base layer of the base by a dipping method, a spray method, or the like, and is dried and then fired at such a low temperature that the organic base is not deteriorated or decomposed.
【００２１】なお、必要に応じて有機または無機のバイ
ンダーを光触媒物質の分散液に混合することができる。Incidentally, if necessary, an organic or inorganic binder can be mixed with the dispersion of the photocatalytic substance.
【００２２】作用について本発明においては、下地層が
二酸化ケイ素および酸化アルミニウムを含むことによ
り、酸化アルミニウムが下地層の表面に出てくるため、
光触媒膜を形成する際の有機溶剤に対する濡れ性が良好
で光触媒膜の付着力が向上するとともに、光触媒膜の平
滑性が良好になる。また、光触媒膜の透明性および膜強
度も良好である。In the present invention, since the underlying layer contains silicon dioxide and aluminum oxide, aluminum oxide comes out on the surface of the underlying layer.
The wettability to the organic solvent when forming the photocatalyst film is good, the adhesion of the photocatalyst film is improved, and the smoothness of the photocatalyst film is good. Further, the transparency and the film strength of the photocatalytic film are also good.
【００２３】さらに、光触媒膜の光触媒作用が下地層に
よって悪影響を受けることもなく、良好な光触媒作用を
有している。Further, the photocatalytic action of the photocatalytic film is not adversely affected by the underlayer, and has a good photocatalytic action.
【００２４】請求項２の発明の光触媒体は、請求項１記
載の光触媒体において、下地層は、酸化アルミニウムが
球状の微粒子であることを特徴としている。According to a second aspect of the present invention, there is provided a photocatalyst according to the first aspect, wherein the underlayer is made of spherical fine particles of aluminum oxide.
【００２５】酸化アルミニウムを球状の微粒子の形で用
いることにより、分散性が良好であるとともに、下地層
を比較的多孔質にすることができる。下地層が多孔質で
あると、光触媒膜の付着力を大きくすることができる。By using aluminum oxide in the form of spherical fine particles, the dispersibility is good and the underlayer can be made relatively porous. When the underlayer is porous, the adhesion of the photocatalyst film can be increased.
【００２６】酸化アルミニウムの粒径は特に限定されな
いが、好ましくは３０〜２００ｎｍのものを用いること
ができる。The particle size of the aluminum oxide is not particularly limited, but preferably 30 to 200 nm.
【００２７】請求項３の発明の光触媒体は、請求項１ま
たは２記載の光触媒体において、光触媒膜は、酸化チタ
ンを主成分としていることを特徴としている。According to a third aspect of the present invention, in the photocatalyst according to the first or second aspect, the photocatalyst film contains titanium oxide as a main component.
【００２８】光触媒物質として最も効果的な物質は酸化
チタンＴｉＯ2であり、したがって本発明においても光
触媒物質として酸化チタンを主成分とするものである。
なぜなら、酸化チタンは、光触媒作用が顕著であるとと
もに、安全で工業的に合理的な価格で、しかも必要量を
入手できるので、光触媒物質として、現在最も有望視さ
れているからである。The most effective substance as the photocatalytic substance is titanium oxide TiO 2 , and therefore, in the present invention, the photocatalytic substance contains titanium oxide as a main component.
This is because titanium oxide has a remarkable photocatalytic action, and is available at a safe, industrially reasonable price and in a necessary amount. Therefore, titanium oxide is currently regarded as the most promising photocatalytic substance.
【００２９】また、酸化チタンには、その結晶構造とし
てルチル形とアナターゼ形とがある。光触媒作用は、ア
ナターゼ形の方が優れている。Titanium oxide has rutile and anatase crystal structures. The photocatalysis is superior for the anatase form.
【００３０】本発明は、光触媒物質として主成分の酸化
チタンの他に請求項１において説明した他の光触媒物質
を副成分として含んでいることができる。The present invention can contain, as a photocatalyst material, other photocatalyst materials described in claim 1 as auxiliary components in addition to titanium oxide as a main component.
【００３１】請求項４の発明の光触媒体は、請求項１な
いし３のいずれか一記載の光触媒体において、光触媒膜
は、酸化チタンを主成分とするとともに、二酸化ケイ素
およびまたは酸化スズを添加していることを特徴として
いる。According to a fourth aspect of the present invention, there is provided a photocatalyst according to any one of the first to third aspects, wherein the photocatalyst film comprises titanium oxide as a main component and silicon dioxide and / or tin oxide added. It is characterized by having.
【００３２】二酸化ケイ素を光触媒膜に添加することに
より、光触媒膜の下地層に対する付着強度が向上すると
ともに、酸化チタン粒子間を結着する作用があるため、
光触媒膜の強度が向上する。The addition of silicon dioxide to the photocatalyst film improves the adhesion strength of the photocatalyst film to the underlying layer and has the effect of binding titanium oxide particles.
The strength of the photocatalyst film is improved.
【００３３】一方、酸化スズを小量添加すると、理由は
定かでないが、光触媒膜の微小クラックの発生が少なく
なり、光触媒膜の膜強度が向上する。酸化スズを添加す
ることにより、熱膨張率が下地層や基体のそれに接近す
るか、結着材として作用するためではないかと考えられ
る。酸化スズの添加量は、好ましくは光触媒物質に対し
て０．１〜１０重量％である。On the other hand, when the tin oxide is added in a small amount, although the reason is not clear, the occurrence of minute cracks in the photocatalytic film is reduced, and the film strength of the photocatalytic film is improved. It is considered that the addition of tin oxide may cause the coefficient of thermal expansion to approach that of the underlayer or the base, or to act as a binder. The addition amount of tin oxide is preferably 0.1 to 10% by weight based on the photocatalytic substance.
【００３４】請求項５の発明の照明器具は、合成樹脂製
の制光手段を備えた照明器具本体と；照明器具本体の合
成樹脂製の制光手段の少なくとも一部を基体として形成
された請求項１ないし４のいずれか一記載の光触媒体
と；を具備していることを特徴としている。A lighting apparatus according to a fifth aspect of the present invention is a lighting apparatus body provided with synthetic resin light control means; and at least a part of the synthetic resin light control means of the lighting apparatus body is formed as a base. And a photocatalyst according to any one of Items 1 to 4.
【００３５】本発明において、照明器具は、屋外用およ
び屋内用のいずれでもよい。In the present invention, the lighting equipment may be either outdoor or indoor.
【００３６】制光手段は、グローブ、セードおよび透光
性カバーなどの一種類または任意の複数種類の組み合わ
せで用いられていることを許容する。The light control means allows one kind or any combination of plural kinds such as a glove, a shade and a light-transmitting cover to be used.
【００３７】また、制光手段の全体に光触媒膜を形成し
てもよいが、その一部分に形成してもよい。Further, the photocatalytic film may be formed on the entire light control means, but may be formed on a part thereof.
【００３８】制光手段は、使用によりばい煙やたばこの
脂などの有機物からなる汚れがそこに付着すると、照明
器具としての光学性能が低下するが、光触媒膜を形成し
ておくことにより、汚れが分解されるので、光学性能の
低下を抑制することができる。The dimming means reduces the optical performance of the lighting equipment when dirt composed of organic substances such as smoke and tobacco fat adheres to the dirt, but the dirt is reduced by forming a photocatalytic film. Since it is decomposed, a decrease in optical performance can be suppressed.
【００３９】また、制光手段に接触した空気中の臭い物
質を分解したり殺菌することにより、室内の脱臭、殺菌
を行うこともできる。In addition, by decomposing and sterilizing odorous substances in the air that come into contact with the light control means, it is possible to perform deodorization and sterilization in the room.
【００４０】さらに、照明器具をたとえば冷蔵庫、エア
コンディショナー、空気清浄装置などに収納できる大き
さおよび構造にして、これらの機器に配設することによ
り、脱臭または殺菌手段とすることもできる。Further, the lighting equipment can be made into a size and a structure that can be stored in, for example, a refrigerator, an air conditioner, an air purifier, and the like, and can be used as a deodorizing or sterilizing means by disposing the lighting equipment in these apparatuses.
【００４１】以上の説明から理解できるように、制光手
段に光触媒膜を形成するので、光触媒膜は透明性の良好
なものが好適である。As can be understood from the above description, since the photocatalytic film is formed on the light control means, it is preferable that the photocatalytic film has good transparency.
【００４２】[0042]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００４３】図１は、本発明の光触媒体の第１の実施形
態を示す概念的要部拡大断面図である。FIG. 1 is a conceptual enlarged cross-sectional view showing a first embodiment of a photocatalyst according to the present invention.
【００４４】各図において、１は基体、２は下地層、３
は光触媒膜である。In each figure, 1 is a substrate, 2 is an underlayer, 3
Is a photocatalyst film.
【００４５】基体１は、透明なポリカーボネート樹脂か
ら構成されている。The substrate 1 is made of a transparent polycarbonate resin.
【００４６】下地層２は、酸化ケイ素および酸化アルミ
ニウムが重量比で５０：５０の割合の混合して構成され
ており、透明性で多孔質な被膜である。The underlayer 2 is composed of a mixture of silicon oxide and aluminum oxide at a weight ratio of 50:50, and is a transparent and porous film.
【００４７】この下地層２は、ポリシロキサンをエタノ
ールに溶解させた溶液にＢＥＴ法による測定で平均粒径
約４０ｎｍの二酸化ケイ素および同じく約３７ｎｍの酸
化アルミニウムの球状微粒子を分散させた塗布液を調整
して、基体１の表面に塗布し、約８０℃で加熱乾燥して
形成したものである。This underlayer 2 is prepared by preparing a coating solution in which a silicon dioxide having an average particle diameter of about 40 nm and spherical fine particles of aluminum oxide having an average particle diameter of about 37 nm are dispersed by a BET method in a solution in which polysiloxane is dissolved in ethanol. Then, it is applied to the surface of the substrate 1 and dried by heating at about 80 ° C.
【００４８】光触媒膜２は、ＢＥＴ法による測定で平均
粒径約７ｎｍの酸化チタンの超微粒子を下地層２の上に
結着させて形成されている。この光触媒膜３は、下地層
２の表面に形成された凹凸面に入り込み、かつ下地層２
に密着している。The photocatalyst film 2 is formed by binding ultrafine particles of titanium oxide having an average particle size of about 7 nm as measured by the BET method on the underlayer 2. The photocatalyst film 3 enters the uneven surface formed on the surface of the underlayer 2 and
Closely adhered to.
【００４９】本実施形態による光触媒体は、以下の比較
例と比較して表１に示すように優れた作用を有してい
る。The photocatalyst according to the present embodiment has an excellent action as shown in Table 1 as compared with the following comparative examples.
【００５０】比較例１：下地層を備えていない以外は本
実施形態と同一仕様である。Comparative Example 1: Except that no underlayer was provided, the specifications were the same as in the present embodiment.
【００５１】比較例２：二酸化ケイ素のみの下地層を備
えた以外は本実施形態と同一仕様である。Comparative Example 2 The specifications are the same as those of the present embodiment except that an underlayer made of only silicon dioxide is provided.
【００５２】比較例３：二酸化ケイ素と酸化アルミニウ
ムとを重量比で８：２の割合で混合した下地層を備えて
いる以外は本実施形態と同一仕様である。Comparative Example 3 Same specifications as in this embodiment except that an underlayer in which silicon dioxide and aluminum oxide were mixed at a weight ratio of 8: 2 was provided.
【００５３】比較例４：二酸化ケイ素と酸化アルミニウ
ムとを重量比で２：８の割合で混合した下地層を備えて
いる以外は本実施形態と同一仕様である。Comparative Example 4: The same specifications as in the present embodiment except that an underlayer in which silicon dioxide and aluminum oxide were mixed at a weight ratio of 2: 8 was provided.
【００５４】なお、表中「濡れ性」とは、光触媒膜形成
の際の有機溶剤に対する下地層の濡れ性を意味する。
「付着力」とは、光触媒膜の下地層に対する付着力を意
味する。「平滑性」とは、光触媒膜の平滑性を意味す
る。「膜強度」とは、光触媒膜の強度を意味する。「光
触媒効果」とは、光触媒膜の性能を意味する。In the table, "wetability" means the wettability of the underlayer with respect to the organic solvent when forming the photocatalytic film.
“Adhesive force” means the adhesive force of the photocatalytic film to the underlying layer. “Smoothness” means the smoothness of the photocatalytic film. “Film strength” means the strength of the photocatalytic film. “Photocatalytic effect” means the performance of a photocatalytic film.
【００５５】また、評価点の○印は、良好で問題がない
ことを示し、△印はやや不良であることを示し、×印は
不良であることを示し、−印は測定していないことを示
している。In addition, the circles of the evaluation points indicate good and no problem, the triangles indicate that they are slightly defective, the crosses indicate that they are defective, and the − marks indicate that no measurement was made. Is shown.
【００５６】[0056]
【表１】 サンプル 濡れ性 付着力 平滑性 膜強度 光触媒効果 比較例１ × × × × − 比較例２ △ △ △ △ ○ 比較例３ △ △ △ △ ○ 本実施形態 ○ ○ ○ ○ ○ 比較例４ ○ ○ △ ○ ○ さらに、本実施形態は、透過率が８５％であったの対し
て比較例２は８０％であった。[Table 1] Sample wettability Adhesive force Smoothness Film strength Photocatalytic effect Comparative example 1 × × × ×-Comparative example 2 △ △ △ △ ○ Comparative example 3 △ △ △ △ ○ This embodiment ○ ○ ○ ○ ○ Comparative example 4 ○ △ ○ ○ Further, in the present embodiment, the transmittance was 85%, whereas in Comparative Example 2, it was 80%.
【００５７】次に、本発明の光触媒体の第２の実施形態
として光触媒膜に酸化スズを０．５重量％添加した光触
媒体を得た。本実施形態における光触媒膜の鉛筆法によ
る硬度テストを行った結果、５Ｈであった。これに対し
て、前記比較例２は３Ｈであった。なお、透過率は本実
施形態が８５％であった。Next, as a second embodiment of the photocatalyst of the present invention, a photocatalyst obtained by adding 0.5% by weight of tin oxide to a photocatalyst film was obtained. A hardness test by a pencil method of the photocatalytic film in the present embodiment was 5H. On the other hand, Comparative Example 2 was 3H. Note that the transmittance of this embodiment was 85%.
【００５８】図２は、本発明の照明器具の一実施形態に
おける街路用照明器具を示す中央断面正面図である。FIG. 2 is a front elevational view at the center in section showing a street lighting device in one embodiment of the lighting device of the present invention.
【００５９】図において、２１は照明器具本体、２２は
半球状グローブ、２３は支持アーム２４は支持リング、
２５半球状反射板、２６はランプソケット、２７は高圧
放電ランプである。In the figure, 21 is a lighting fixture body, 22 is a hemispherical glove, 23 is a support arm, 24 is a support ring,
25 is a hemispherical reflector, 26 is a lamp socket, and 27 is a high-pressure discharge lamp.
【００６０】照明器具本体２１は、支柱取付部２１ａ、
グローブ支承座２１ｂおよびランプソケット取付部２１
ｃを備えている。The lighting fixture main body 21 includes a column mounting portion 21a,
Globe support seat 21b and lamp socket mounting part 21
c.
【００６１】支柱取付部２１ａは、筒状をなしていて、
支柱（図示しない。）の先端に外側から挿入して装着さ
れる。そして、支柱に固着するための押しねじ２１ａ１
を備えている。The column mounting portion 21a has a cylindrical shape.
It is inserted from the outside and attached to the tip of a column (not shown). Then, a push screw 21a1 for fixing to the column
It has.
【００６２】グローブ支承座２１ｂは、支柱取付部２１
ａの先端に同軸的に一体形成されており、半球状グロー
ブ２２の下側に位置する頂部を支承するとともに、支持
アーム２３の下端部を固定している。また、グローブ支
承座２１ｂの中心部には、半球状グローブ２２の頂部内
に突出するように起立縁２１ｂ１が一体に形成されて半
球状グローブ２２内に侵入した水が支柱内に流入するの
を防止している。The globe support seat 21 b is
a coaxially formed integrally with the tip of the support arm 23, supports the top located below the hemispherical globe 22, and fixes the lower end of the support arm 23. An upright edge 21b1 is integrally formed at the center of the globe support seat 21b so as to protrude into the top of the hemispherical globe 22, so that water that has entered the hemispherical globe 22 flows into the strut. Preventing.
【００６３】ランプソケット支持部２１ｃは、ランプソ
ケット２６を起立縁２１ｂ１に囲まれるように配設す
る。The lamp socket support 21c is provided so that the lamp socket 26 is surrounded by the upright edge 21b1.
【００６４】半球状グローブ２２は、透明なポリカーボ
ネート樹脂を成形してほぼ半球状に形成され、頂部が下
側に位置するようにグローブ支承部２１ｂに支承される
とともに、半径方向の対称位置にアーム収納溝２２ａが
形成されている。そして、半球状グローブ２２の外面に
は、本発明の光触媒体の第１の実施形態と同様仕様の光
触媒膜が形成されている。The hemispherical globe 22 is formed into a substantially hemispherical shape by molding a transparent polycarbonate resin. A storage groove 22a is formed. A photocatalyst film having the same specifications as those of the first embodiment of the photocatalyst of the present invention is formed on the outer surface of the hemispherical globe 22.
【００６５】支持アーム２３は、金属製で、半球状グロ
ーブ２２のアーム収納溝２２ａ内外面が半球状グローブ
２２の外面と面一になるよう収納されている。The support arm 23 is made of metal and is housed so that the inner and outer surfaces of the arm housing groove 22 a of the hemispherical globe 22 are flush with the outer surface of the hemispherical glove 22.
【００６６】支持リング２４は、金属製で、支持アーム
２３の上端に固定されるとともに、上面に反射板支承座
２４ａを備えている。The support ring 24 is made of metal, is fixed to the upper end of the support arm 23, and has a reflector support seat 24a on the upper surface.
【００６７】半球状反射板２５は、金属製で、ほぼ半球
状に形成され、その開口縁が支持リング２４の反射板支
承座２４ａに載置された状態でねじ２５ａによって支持
リング２４に固定されている。The hemispherical reflector 25 is made of metal and is formed in a substantially hemispherical shape. The hemispherical reflector 25 is fixed to the support ring 24 by screws 25 a with its opening edge placed on the reflector support seat 24 a of the support ring 24. ing.
【００６８】高圧放電ランプ２７は、メタルハライド放
電ランプ、高圧ナトリウムランプ、高圧水銀ランプなど
の中から所望の種類が選択されてランプソケット２６に
装着される。As the high-pressure discharge lamp 27, a desired type is selected from a metal halide discharge lamp, a high-pressure sodium lamp, a high-pressure mercury lamp, and the like, and is mounted on the lamp socket 26.
【００６９】そうして、半球状グローブ２２および半球
状反射板２５は、全体としてほぼ真球状の包囲体を形成
する。Thus, the hemispherical globe 22 and the hemispherical reflector 25 form a substantially spherical enclosure as a whole.
【００７０】半球状グローブ２２の外面には、光触媒膜
が形成されているので、ばい煙などの汚れが付着して
も、高圧放電ランプから発生して半球状グローブ２２を
透過した４００ｎｍ以下の短波長の光によって光触媒膜
が活性化されて、汚れを分解してセルフクリーニングを
行うので、長期間にわたって高い透過率を維持すること
ができる。Since a photocatalytic film is formed on the outer surface of the hemispherical globe 22, even if dirt such as smoke adheres, a short wavelength of 400 nm or less generated from the high-pressure discharge lamp and transmitted through the hemispherical globe 22. The light activates the photocatalytic film to decompose dirt and perform self-cleaning, so that a high transmittance can be maintained for a long period of time.
【００７１】[0071]
【発明の効果】請求項１ないし４の各発明によれば、有
機質からなる基体に二酸化ケイ素および酸化アルミニウ
ムを含む下地層を形成し、その上に光触媒膜を形成した
ことにより、基体が光触媒膜によって劣化することな
く、光触媒膜を形成する際の有機溶剤に対する濡れ性が
良好で光触媒膜の付着強度が向上するとともに光触媒膜
の平滑性が良好で、しかも光触媒膜の透明性および膜強
度も良好な光触媒体を提供することができる。According to each of the first to fourth aspects of the present invention, an underlayer containing silicon dioxide and aluminum oxide is formed on an organic substrate, and a photocatalytic film is formed thereon. The photocatalytic film has good wettability to an organic solvent when forming the photocatalytic film, improves the adhesion strength of the photocatalytic film, and has good smoothness of the photocatalytic film, and also has good transparency and film strength. A photocatalyst can be provided.
【００７２】請求項２の発明によれば、加えて下地層の
酸化アルミニウムが球状の微粒子であることにより、分
散性が良好で下地層を多孔質にして光触媒膜の付着強度
を一層向上させるとともに、光触媒膜の平滑性をさらに
向上した光触媒体を提供することができる。According to the second aspect of the present invention, since the aluminum oxide of the underlayer is spherical fine particles, the dispersibility is good, the underlayer is made porous, and the adhesion strength of the photocatalytic film is further improved. Further, it is possible to provide a photocatalyst in which the smoothness of the photocatalyst film is further improved.
【００７３】請求項３の発明によれば、加えて光触媒膜
が酸化チタンを主成分とすることにより、光触媒作用が
顕著で、安全で工業的に合理的な価格の光触媒体を提供
することができる。According to the third aspect of the present invention, a photocatalyst film containing titanium oxide as a main component can provide a photocatalyst which has a remarkable photocatalytic action, is safe, and is industrially reasonable. it can.
【００７４】請求項４の発明によれば、加えて光触媒膜
に二酸化ケイ素およびまたは酸化スズを添加したことに
より、付着力が良好で、光触媒膜の膜強度が大きい光触
媒体を提供することができる。According to the fourth aspect of the present invention, in addition to the addition of silicon dioxide and / or tin oxide to the photocatalyst film, a photocatalyst having good adhesion and high photocatalytic film strength can be provided. .
【００７５】請求項５の発明によれば、請求項１ないし
４の効果を有する照明器具を提供することができる。According to the fifth aspect of the present invention, it is possible to provide a lighting fixture having the effects of the first to fourth aspects.
【図１】本発明の光触媒体の第１の実施形態の概念的要
部拡大断面図FIG. 1 is an enlarged schematic sectional view of a principal part of a first embodiment of a photocatalyst according to the present invention.
【図２】本発明の照明器具の一実施形態における街路用
照明器具を示す中央断面正面図FIG. 2 is a central sectional front view showing a street lighting device in one embodiment of the lighting device of the present invention.
１…基体 ２…下地層 ３…光触媒膜 DESCRIPTION OF SYMBOLS 1 ... Substrate 2 ... Underlayer 3 ... Photocatalytic film
Claims (5)
二酸化ケイ素および酸化アルミニウムを含む下地層と；
下地層を介して基体に形成された光触媒膜と；を具備し
ていることを特徴とする光触媒体。An organic substrate; an underlayer containing silicon dioxide and aluminum oxide formed on the surface of the substrate;
A photocatalyst film formed on the substrate via an underlayer.
子であることを特徴とする請求項１記載の光触媒体。2. The photocatalyst according to claim 1, wherein the underlayer is made of spherical fine particles of aluminum oxide.
ることを特徴とする請求項１または２記載の光触媒体。3. The photocatalyst according to claim 1, wherein the photocatalyst film contains titanium oxide as a main component.
ともに、二酸化ケイ素およびまたは酸化スズを添加して
いることを特徴とする請求項１ないし３のいずれか一記
載の光触媒体。4. The photocatalyst according to claim 1, wherein the photocatalyst film has titanium oxide as a main component and silicon dioxide and / or tin oxide added thereto.
体と；照明器具本体の合成樹脂製の制光手段の少なくと
も一部を基体として形成された請求項１ないし４のいず
れか一記載の光触媒体と；を具備していることを特徴と
する照明器具。5. A lighting fixture body provided with synthetic resin light control means, and at least a part of the synthetic resin light control means of the lighting fixture body is formed as a base. And a photocatalyst according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13291698A JP4026229B2 (en) | 1998-05-15 | 1998-05-15 | Photocatalyst body and lighting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13291698A JP4026229B2 (en) | 1998-05-15 | 1998-05-15 | Photocatalyst body and lighting apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11319579A true JPH11319579A (en) | 1999-11-24 |
| JP4026229B2 JP4026229B2 (en) | 2007-12-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13291698A Expired - Fee Related JP4026229B2 (en) | 1998-05-15 | 1998-05-15 | Photocatalyst body and lighting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4026229B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005296471A (en) * | 2004-04-14 | 2005-10-27 | Aruze Corp | Game machine |
| US7871664B2 (en) | 2006-03-23 | 2011-01-18 | Guardian Industries Corp. | Parabolic trough or dish reflector for use in concentrating solar power apparatus and method of making same |
| WO2015011786A1 (en) * | 2013-07-23 | 2015-01-29 | 日立マクセル株式会社 | Optical component having nanoparticle thin film and optical application device using same |
| WO2017119015A1 (en) * | 2016-01-08 | 2017-07-13 | ナスク創研株式会社 | Method for coating viral infection-preventing agent in airport facilities, photocatalyst coating film using same, and method for visualizing coating film |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7002507B2 (en) * | 2003-09-25 | 2006-02-21 | Sanyo Electric Co., Ltd. | Pipelined and cyclic analog-to-digital converters |
-
1998
- 1998-05-15 JP JP13291698A patent/JP4026229B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005296471A (en) * | 2004-04-14 | 2005-10-27 | Aruze Corp | Game machine |
| US7871664B2 (en) | 2006-03-23 | 2011-01-18 | Guardian Industries Corp. | Parabolic trough or dish reflector for use in concentrating solar power apparatus and method of making same |
| US8303124B2 (en) | 2006-03-23 | 2012-11-06 | Guardian Industries Corp. | Parabolic trough or dish reflector for use in concentrating solar power apparatus and method of making same |
| WO2015011786A1 (en) * | 2013-07-23 | 2015-01-29 | 日立マクセル株式会社 | Optical component having nanoparticle thin film and optical application device using same |
| JPWO2015011786A1 (en) * | 2013-07-23 | 2017-03-02 | 日立マクセル株式会社 | Optical component having nanoparticle thin film and optical application apparatus using the same |
| WO2017119015A1 (en) * | 2016-01-08 | 2017-07-13 | ナスク創研株式会社 | Method for coating viral infection-preventing agent in airport facilities, photocatalyst coating film using same, and method for visualizing coating film |
| JPWO2017119015A1 (en) * | 2016-01-08 | 2018-11-08 | Ｃｉｒｃｕｌｕｓ株式会社 | Method for coating virus infection preventive agent in airport facility, photocatalyst coating film using the same, and method for visualizing coating film |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4026229B2 (en) | 2007-12-26 |
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