JPH11176382A - Light source with photocatalyst - Google Patents
Light source with photocatalystInfo
- Publication number
- JPH11176382A JPH11176382A JP33702597A JP33702597A JPH11176382A JP H11176382 A JPH11176382 A JP H11176382A JP 33702597 A JP33702597 A JP 33702597A JP 33702597 A JP33702597 A JP 33702597A JP H11176382 A JPH11176382 A JP H11176382A
- Authority
- JP
- Japan
- Prior art keywords
- photocatalyst
- film
- photocatalytic
- glass tube
- thin film
- 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
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は光触媒付蛍光ラン
プ、光触媒付白熱電球等の光触媒付光源に関するもので
ある。The present invention relates to a light source with a photocatalyst, such as a fluorescent lamp with a photocatalyst and an incandescent light bulb with a photocatalyst.
【０００２】[0002]
【従来の技術】最近、蛍光ランプの外表面に光触媒膜を
形成した光触媒付蛍光ランプが考えられており、光触媒
付蛍光ランプにおいては光触媒膜が有機物を分解するか
ら、ガラス管の外表面が汚れるのを防止することができ
るので、光触媒付蛍光ランプの明るさが低下するのを防
止することができ、しかも脱臭、抗菌、殺菌等の光触媒
効果がある。2. Description of the Related Art Recently, a fluorescent lamp with a photocatalyst in which a photocatalyst film is formed on the outer surface of a fluorescent lamp has been considered. In the fluorescent lamp with a photocatalyst, the photocatalyst film decomposes organic substances, so that the outer surface of the glass tube becomes dirty. Therefore, it is possible to prevent the brightness of the fluorescent lamp with a photocatalyst from being lowered, and it has a photocatalytic effect such as deodorization, antibacterial and sterilization.
【０００３】なお、酸化チタン（ＴｉＯ2）等の光触媒
に光が照射されることにより、光触媒が強い酸化、還元
作用を呈し、光触媒に触れた有機物等を分解すること
は、たとえば特開昭６０−１９３３５６号公報に述べら
れている。こうした光触媒の作用をランプのガラス管の
外表面上で生じさせることは、たとえば特開平１−１６
９８６６号公報に述べられている。[0003] It is known from Japanese Patent Application Laid-Open No. Sho 60 (1994) that, when a photocatalyst such as titanium oxide (TiO 2 ) is irradiated with light, the photocatalyst exhibits a strong oxidizing and reducing action and decomposes organic substances and the like that have come into contact with the photocatalyst. No. 193356. Producing such a photocatalytic action on the outer surface of the glass tube of the lamp is disclosed in, for example,
No. 9866.
【０００４】そして、従来の光触媒付蛍光ランプにおい
ては、ガラス管の外表面の全面に光触媒膜が形成されて
いる。In a conventional fluorescent lamp with a photocatalyst, a photocatalytic film is formed on the entire outer surface of the glass tube.
【０００５】[0005]
【発明が解決しようとする課題】しかし、このような光
触媒付蛍光ランプにおいては、光触媒膜が形成されてい
ることを容易に識別することができない。However, in such a fluorescent lamp with a photocatalyst, it cannot be easily identified that a photocatalytic film is formed.
【０００６】本発明は上述の課題を解決するためになさ
れたもので、光触媒膜が形成されていることを容易に識
別することができる光触媒付光源を提供することを目的
とする。The present invention has been made in order to solve the above-mentioned problems, and has as its object to provide a light source with a photocatalyst capable of easily identifying that a photocatalytic film is formed.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するた
め、本発明においては、ガラス管に光触媒膜が形成さ
れ、上記ガラス管に口金が設けられた光触媒付光源にお
いて、上記ガラス管の上記口金に隣接する部分に光触媒
膜未形成部分を設ける。According to the present invention, there is provided a light source with a photocatalyst in which a glass tube is provided with a photocatalytic film and the glass tube is provided with a base. A photocatalyst film-unformed portion is provided in a portion adjacent to.
【０００８】この場合、上記光触媒膜として、光触媒厚
膜と上記光触媒厚膜より上記口金側に形成されかつ厚さ
が上記光触媒厚膜の厚さの２分の１から５分の１である
光触媒薄膜とを設ける。In this case, as the photocatalyst film, a photocatalyst thick film and a photocatalyst formed on the base side with respect to the photocatalyst thick film and having a thickness of one half to one fifth of the thickness of the photocatalyst thick film. And a thin film.
【０００９】また、上記光触媒膜として、光触媒厚膜と
上記光触媒厚膜より上記口金側に形成されかつ厚さが口
金側端部に向かって徐々に減少する光触媒薄膜とを設け
る。Further, as the photocatalyst film, a photocatalyst thick film and a photocatalyst thin film which is formed on the base side with respect to the photocatalyst thick film and whose thickness gradually decreases toward the base end.
【００１０】また、上記口金として、非金属からなるも
のを用いる。In addition, a non-metallic base is used as the base.
【００１１】[0011]
【発明の実施の形態】図１は本発明の係る光触媒付蛍光
ランプを示す概略図、図２は図１の拡大Ａ−Ａ断面図で
ある。図に示すように、ガラス管１の両端部に口金５が
取り付けられ、ガラス管１の中央部に酸化チタンからな
る光触媒厚膜２が形成され、ガラス管１の光触媒厚膜２
が形成された部分の両側部すなわち光触媒厚膜２より口
金５側に酸化チタンからなる光触媒薄膜３が形成され、
光触媒薄膜３の厚さは均一であり、光触媒厚膜２、光触
媒薄膜３により光触媒膜が構成されている。また、ガラ
ス管１の光触媒薄膜３が形成された部分の両側部すなわ
ち口金５に隣接する部分に光触媒膜未形成部分４が設け
られている。そして、光触媒薄膜３の厚さは光触媒厚膜
２の厚さの２分の１から５分の１であり、光触媒膜未形
成部分４の表面積は光触媒厚膜２、光触媒薄膜３が形成
された部分の表面積の１／１０以下である。また、ガラ
ス管１の内面にアルミナからなる保護膜６が形成され、
保護膜６の内面に蛍光体７が形成されている。FIG. 1 is a schematic view showing a fluorescent lamp with a photocatalyst according to the present invention, and FIG. 2 is an enlarged sectional view taken along line AA of FIG. As shown in the figure, caps 5 are attached to both ends of a glass tube 1, a photocatalyst thick film 2 made of titanium oxide is formed in the center of the glass tube 1, and a photocatalyst thick film 2 of the glass tube 1 is formed.
The photocatalytic thin film 3 made of titanium oxide is formed on both sides of the portion where the is formed, that is, on the base 5 side from the photocatalytic thick film 2,
The thickness of the photocatalytic thin film 3 is uniform, and the photocatalytic thick film 2 and the photocatalytic thin film 3 constitute a photocatalytic film. Further, a portion 4 where no photocatalytic film is formed is provided on both sides of the portion where the photocatalytic thin film 3 is formed on the glass tube 1, that is, a portion adjacent to the base 5. The thickness of the photocatalyst thin film 3 is one-half to one-fifth of the thickness of the photocatalyst thick film 2, and the surface area of the photocatalyst film-free portion 4 is such that the photocatalyst thick film 2 and the photocatalyst thin film 3 are formed. It is 1/10 or less of the surface area of the portion. Further, a protective film 6 made of alumina is formed on the inner surface of the glass tube 1,
The phosphor 7 is formed on the inner surface of the protective film 6.
【００１２】つぎに、図１、図２に示した光触媒付蛍光
ランプの製造方法について説明する。まず、たとえば特
開平５−５９５６２号公報に記載されいる方法により、
ガラス管１に光触媒厚膜２、光触媒薄膜３を形成する。
すなわち、ランプ製球前のガラス管１の外表面にチタン
（Ｔｉ）のアルコキシドをアルコールで希釈して酸触媒
で加水分解したチタンゾルなどのチタン有機化合物を含
むチタンゾルからなる光触媒薬液を用いたディッピング
法により酸化チタンからなる光触媒厚膜２、光触媒薄膜
３を形成する。この場合、光触媒薄膜３を形成する部分
のガラス管１の光触媒薬液からの引き上げ速度を遅くす
ることにより、光触媒薄膜３を形成する。また、ディッ
ピング法でガラス管１の全体を光触媒薬液にディップし
たのち、光触媒膜未形成部分４の光触媒薬液を拭き取る
ことにより、光触媒膜未形成部分４を形成する。つぎ
に、焼成することにより、緻密で強固な光触媒厚膜２、
光触媒薄膜３を形成する。つぎに、通常の蛍光ランプ製
球工程により光触媒付蛍光ランプを製作する。Next, a method of manufacturing the fluorescent lamp with a photocatalyst shown in FIGS. 1 and 2 will be described. First, for example, by the method described in Japanese Patent Application Laid-Open No. 5-59562,
A photocatalyst thick film 2 and a photocatalyst thin film 3 are formed in a glass tube 1.
That is, a dipping method using a photocatalytic chemical solution composed of a titanium sol containing a titanium organic compound such as a titanium sol obtained by diluting an alkoxide of titanium (Ti) with alcohol and hydrolyzing with an acid catalyst on the outer surface of the glass tube 1 before lamp making. Thus, the photocatalyst thick film 2 and the photocatalyst thin film 3 made of titanium oxide are formed. In this case, the photocatalytic thin film 3 is formed by reducing the speed of pulling up the glass tube 1 from the photocatalytic solution at the portion where the photocatalytic thin film 3 is formed. After dipping the entire glass tube 1 into a photocatalyst solution by a dipping method, the photocatalyst solution in the photocatalyst film non-formation portion 4 is wiped off to form the photocatalyst film non-formation portion 4. Next, by firing, a dense and strong photocatalyst thick film 2,
A photocatalytic thin film 3 is formed. Next, a fluorescent lamp with a photocatalyst is manufactured by a normal fluorescent lamp ball making process.
【００１３】つぎに、図１、図２に示した光触媒付蛍光
ランプの他の製造方法について説明する。まず、ガラス
管１にチタンのアルコキシドをアルコールで希釈して酸
触媒で加水分解したチタンゾルなどのチタン有機化合物
を含むチタンゾルからなる光触媒薬液をスプレー塗布す
る。この場合、光触媒薄膜３を形成するには、メッシュ
状のマスク等によりマスキングすればよい。また、マス
クによりスプレーから光触媒膜未形成部分４をマスキン
グすることにより、光触媒膜未形成部分４を容易に形成
することができる。つぎに、焼成することにより、緻密
で強固な光触媒厚膜２、光触媒薄膜３を形成する。つぎ
に、通常の蛍光ランプ製球工程により光触媒付蛍光ラン
プを製作する。Next, another method of manufacturing the fluorescent lamp with a photocatalyst shown in FIGS. 1 and 2 will be described. First, a photocatalytic chemical solution composed of a titanium sol containing a titanium organic compound such as a titanium sol obtained by diluting an alkoxide of titanium with alcohol and hydrolyzing with an acid catalyst is spray-coated on the glass tube 1. In this case, in order to form the photocatalytic thin film 3, masking may be performed using a mesh-shaped mask or the like. In addition, by masking the photocatalyst film-unformed portion 4 by spraying with a mask, the photocatalyst film-unformed portion 4 can be easily formed. Next, a dense and strong photocatalyst thick film 2 and photocatalyst thin film 3 are formed by baking. Next, a fluorescent lamp with a photocatalyst is manufactured by a normal fluorescent lamp ball making process.
【００１４】図１、図２に示した光触媒付光源において
は、口金５の隣接部に光触媒膜未形成部分４が設けられ
ているから、光触媒厚膜２、光触媒薄膜３が形成されて
いることを容易に識別することができる。また、光触媒
薄膜３の厚さが光触媒薄厚２の厚さの２分の１以下であ
るから、光触媒薄膜３が形成された部分の干渉が抑えら
れるので、光触媒薄膜３が形成された部分と光触媒膜未
形成部分４とで放射される光の色合いが大きく異なった
ものとなることはない。また、光触媒薄膜３の厚さが光
触媒薄厚２の厚さの５分の１以上であるから、光触媒薄
膜３が形成されている部分の光の反射率と光触媒膜未形
成部分４の光の反射率とが大きく異なるので、光触媒薄
膜３が形成してある部分と光触媒膜未形成部分４との区
別が付き易い。また、光触媒膜未形成部分４の表面積は
光触媒厚膜２、光触媒薄膜３が形成された部分の表面積
の１／１０以下であるから、光触媒膜未形成部分４に光
触媒膜がないことに基づく光触媒効果の低下が少ない。In the light source with a photocatalyst shown in FIGS. 1 and 2, the photocatalyst thick film 2 and the photocatalyst thin film 3 are formed because the photocatalyst film-free portion 4 is provided adjacent to the base 5. Can be easily identified. In addition, since the thickness of the photocatalyst thin film 3 is not more than half the thickness of the photocatalyst thin film 2, interference at the portion where the photocatalyst thin film 3 is formed is suppressed. The color of light radiated from the portion 4 where the film is not formed does not greatly differ from the color. Further, since the thickness of the photocatalyst thin film 3 is one fifth or more of the thickness of the photocatalyst thin film 2, the light reflectance of the portion where the photocatalyst thin film 3 is formed and the light reflection of the portion 4 where the photocatalyst film is not formed are reflected. Since the ratio differs greatly, it is easy to distinguish between the portion where the photocatalytic thin film 3 is formed and the portion 4 where the photocatalytic film is not formed. Further, the surface area of the photocatalyst film-free portion 4 is 1/10 or less of the surface area of the photocatalyst thick film 2 and the photocatalyst thin film 3 formed portion. Less decrease in effect.
【００１５】図３は本発明に係る光触媒付白熱電球を示
す概略図である。図に示すように、り、ボール形のガラ
ス管１１の頚部に口金１５が取り付けられ、ガラス管１
１の外表面の口金１５側部分を除いた部分に酸化チタン
からなる光触媒厚膜１２が形成され、ガラス管１１の光
触媒厚膜１２が形成された部分より口金１５側に酸化チ
タンからなる光触媒薄膜１３が形成され、光触媒薄膜１
３の厚さは均一であり、光触媒厚膜１２、光触媒薄膜１
３により光触媒膜が構成されている。また、ガラス管１
１の光触媒薄膜１３が形成された部分より口金１５側す
なわちガラス管１１の口金１５に隣接する部分に光触媒
膜未形成部分１４が設けられている。そして、光触媒薄
膜１３の厚さは光触媒厚膜１２の厚さの２分の１から５
分の１であり、光触媒膜未形成部分１４の表面積は光触
媒厚膜１２、光触媒薄膜１３が形成された部分の表面積
の１／１０以下である。FIG. 3 is a schematic view showing an incandescent lamp with a photocatalyst according to the present invention. As shown in the figure, a base 15 is attached to the neck of a ball-shaped glass tube 11 and
A photocatalyst thick film 12 made of titanium oxide is formed on the outer surface of the outer tube 1 except for a portion on the base 15 side, and a photocatalytic thin film made of titanium oxide on the base 15 side of the glass tube 11 on the base 15 side where the photocatalyst thick film 12 is formed. 13, the photocatalytic thin film 1
3, the photocatalyst thick film 12, the photocatalyst thin film 1
3 constitutes a photocatalytic film. In addition, glass tube 1
The photocatalyst film-free portion 14 is provided on the base 15 side of the portion where the one photocatalytic thin film 13 is formed, that is, on the portion of the glass tube 11 adjacent to the base 15. Then, the thickness of the photocatalytic thin film 13 is from one half to 5 of the thickness of the photocatalytic thick film 12.
The surface area of the portion 14 where the photocatalytic film is not formed is 1/10 or less of the surface area of the portion where the photocatalytic thick film 12 and the photocatalytic thin film 13 are formed.
【００１６】また、図３に示した光触媒付白熱電球は図
１、図２に示した光触媒付蛍光ランプの製造方法とほぼ
同様の製造方法により製造することができる。The incandescent light bulb with a photocatalyst shown in FIG. 3 can be manufactured by substantially the same manufacturing method as that of the fluorescent lamp with a photocatalyst shown in FIGS.
【００１７】そして、図３に示した光触媒付白熱電球に
おいても、口金１５の隣接部に光触媒膜未形成部分１４
が設けられているから、光触媒厚膜１２、光触媒薄膜１
３が形成されていることを容易に識別することができ
る。また、光触媒薄膜１３の厚さが光触媒薄厚１２の厚
さの２分の１以下であるから、光触媒薄膜１３が形成さ
れた部分と光触媒膜未形成部分１４とで放射される光の
色合いが大きく異なったものとなることはない。また、
光触媒薄膜１３の厚さが光触媒薄厚１２の厚さの５分の
１以上であるから、光触媒薄膜１３が形成してある部分
と光触媒膜未形成部分１４との区別が付き易い。また、
光触媒膜未形成部分１４の表面積は光触媒厚膜１２、光
触媒薄膜１３が形成された部分の表面積の１／１０以下
であるから、光触媒膜未形成部分１４に光触媒膜がない
ことに基づく光触媒効果の低下が少ない。Also, in the incandescent lamp with photocatalyst shown in FIG.
Is provided, the photocatalyst thick film 12, the photocatalyst thin film 1
3 can be easily identified. Further, since the thickness of the photocatalyst thin film 13 is equal to or less than half of the thickness of the photocatalyst thin film 12, the color of light emitted between the portion where the photocatalyst thin film 13 is formed and the portion 14 where the photocatalyst film is not formed is large. It will not be different. Also,
Since the thickness of the photocatalyst thin film 13 is one fifth or more of the thickness of the photocatalyst thin film 12, it is easy to distinguish between the portion where the photocatalyst thin film 13 is formed and the portion 14 where the photocatalyst film is not formed. Also,
Since the surface area of the photocatalyst film-free portion 14 is 1/10 or less of the surface area of the photocatalyst thick film 12 and the photocatalyst thin film 13 formed portion, the photocatalytic effect based on the absence of the photocatalyst film in the photocatalyst film-free portion 14 is reduced. Less decrease.
【００１８】図４は本発明に係る他の２０Ｗの光触媒付
蛍光ランプを示す概略図である。図に示すように、ガラ
ス管２１の両端部にシリコン樹脂等の非金属からなる口
金２４が取り付けられ、ガラス管２１の中央部に酸化チ
タンからなる光触媒膜２２が形成され、ガラス管２１の
光触媒膜２２が形成された部分の両側部すなわちガラス
管２１の口金２４に隣接する部分に光触媒膜未形成部分
２３が設けられている。そして、光触媒膜未形成部分２
３の表面積は光触媒膜２２が形成された部分の表面積の
１／１０以下である。FIG. 4 is a schematic view showing another fluorescent lamp with a photocatalyst of 20 W according to the present invention. As shown in the figure, caps 24 made of a non-metal such as silicon resin are attached to both ends of a glass tube 21, and a photocatalytic film 22 made of titanium oxide is formed at the center of the glass tube 21. A photocatalyst film-free portion 23 is provided on both sides of the portion where the film 22 is formed, that is, on a portion adjacent to the base 24 of the glass tube 21. Then, the photocatalyst film-unformed portion 2
The surface area of No. 3 is 1/10 or less of the surface area of the portion where the photocatalytic film 22 is formed.
【００１９】つぎに、図５により図４に示した光触媒付
蛍光ランプの製造方法について説明する。まず、図５
(ａ)に示すように、ガラス管２１にチタンのアルコキシ
ドをアルコールで希釈して酸触媒で加水分解したチタン
ゾルなどのチタン有機化合物を含むチタンゾルからなる
光触媒薬液を塗布し、５００℃で焼成して、光触媒膜２
２を形成する。つぎに、図５(ｂ)に示すように、通常の
蛍光ランプ製球工程により光触媒付蛍光ランプを製作す
る。Next, a method of manufacturing the fluorescent lamp with a photocatalyst shown in FIG. 4 will be described with reference to FIG. First, FIG.
As shown in (a), a photocatalytic chemical solution comprising a titanium sol containing a titanium organic compound such as a titanium sol obtained by diluting an alkoxide of titanium with alcohol and hydrolyzing with an acid catalyst is applied to a glass tube 21 and fired at 500 ° C. , Photocatalytic film 2
Form 2 Next, as shown in FIG. 5B, a fluorescent lamp with a photocatalyst is manufactured by a normal fluorescent lamp making process.
【００２０】図４に示した光触媒付蛍光ランプにおいて
は、口金２４に隣接する部分に光触媒膜未形成部分２３
が設けられているから、光触媒膜２２が形成されている
ことを容易に識別することができる。また、口金２４の
ガラス管２１中央側端部は光触媒膜未形成部分２３に位
置しているから、口金２４が光触媒膜２２によって分解
されることがない。また、光触媒膜未形成部分２３の表
面積は光触媒膜２２が形成された部分の表面積の１／１
０以下であるから、光触媒膜未形成部分２３に光触媒膜
がないことに基づく光触媒効果の低下が少ない。In the fluorescent lamp with a photocatalyst shown in FIG.
Is provided, it is possible to easily identify that the photocatalyst film 22 is formed. Further, since the end of the base 24 on the center side of the glass tube 21 is located in the photocatalyst film non-formed portion 23, the base 24 is not decomposed by the photocatalytic film 22. The surface area of the photocatalyst film-free portion 23 is 1/1 of the surface area of the photocatalyst film 22-formed portion.
Since it is 0 or less, a decrease in the photocatalytic effect due to the absence of the photocatalyst film in the photocatalyst film-free portion 23 is small.
【００２１】なお、上述実施の形態においては、光触媒
付蛍光ランプ、光触媒付白熱電球について説明したが、
他の光触媒付光源に本発明を適用することができる。ま
た、上述実施の形態においては、厚さが光触媒厚膜２の
厚さの２分の１から５分の１である光触媒薄膜３、１３
を形成したが、厚さが口金５、１５側端部に向かって徐
々に減少する光触媒薄膜を形成してもよい。また、上述
実施の形態においては、光触媒薄膜３、１３の厚さを均
一にしたが、光触媒薄膜を口金５、１５側端部に向けて
徐々に薄く形成してもよい。In the above embodiment, the fluorescent lamp with a photocatalyst and the incandescent lamp with a photocatalyst have been described.
The present invention can be applied to other light sources with a photocatalyst. Further, in the above-described embodiment, the photocatalytic thin films 3, 13 whose thickness is ２ to 分 の of the thickness of the photocatalytic thick film 2 are used.
Was formed, but a photocatalytic thin film whose thickness gradually decreases toward the end portions on the bases 5 and 15 may be formed. Further, in the above-described embodiment, the thickness of the photocatalyst thin films 3 and 13 is made uniform. However, the photocatalyst thin film may be formed gradually thinner toward the end portions on the bases 5 and 15 side.
【００２２】[0022]
【発明の効果】本発明に係る光触媒付光源においては、
ガラス管の口金に隣接する部分に光触媒膜未形成部分を
設けているから、光触媒膜が形成されていることを容易
に識別することができる。In the light source with photocatalyst according to the present invention,
Since the photocatalyst film non-formed portion is provided in the portion adjacent to the base of the glass tube, it is possible to easily identify that the photocatalyst film is formed.
【００２３】また、光触媒膜として、光触媒厚膜と光触
媒厚膜より口金側に形成されかつ厚さが光触媒厚膜の厚
さの２分の１から５分の１である光触媒薄膜とを設けた
ときには、光触媒膜が形成された部分と光触媒膜未形成
部分とで放射される光の色合いが大きく異なったものと
なることはなく、また光触媒膜が形成してある部分と光
触媒膜未形成部分との区別が付き易い。Further, as the photocatalyst film, a photocatalyst thick film and a photocatalyst thin film which is formed closer to the base than the photocatalyst thick film and whose thickness is one half to one fifth of the thickness of the photocatalyst thick film are provided. Sometimes, the color of the light emitted between the portion where the photocatalyst film is formed and the portion where the photocatalyst film is not formed does not greatly differ, and the portion where the photocatalyst film is formed and the portion where the photocatalyst film is not formed Is easy to distinguish.
【００２４】また、光触媒膜として、光触媒厚膜と光触
媒厚膜より口金側に形成されかつ厚さが口金側端部に向
かって徐々に減少する光触媒薄膜とを設けたときには、
光触媒膜が形成された部分と光触媒膜未形成部分とで放
射される光の色合いが大きく異なったものとなることは
なく、また光触媒膜が形成してある部分と光触媒膜未形
成部分との区別が付き易い。When a photocatalyst thick film and a photocatalyst thin film which is formed closer to the base than the photocatalyst thick film and whose thickness gradually decreases toward the base end are provided as the photocatalyst film,
The color of light emitted between the part where the photocatalyst film is formed and the part where the photocatalyst film is not formed does not differ greatly, and the distinction between the part where the photocatalyst film is formed and the part where the photocatalyst film is not formed It is easy to stick.
【００２５】また、口金として、非金属からなるものを
用いたときには、口金が光触媒膜によって分解されるこ
とがない。When a base made of a non-metal is used, the base is not decomposed by the photocatalytic film.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の係る光触媒付蛍光ランプを示す概略図
である。FIG. 1 is a schematic view showing a fluorescent lamp with a photocatalyst according to the present invention.
【図２】図１の拡大Ａ−Ａ断面図である。FIG. 2 is an enlarged sectional view taken on line AA of FIG. 1;
【図３】本発明に係る光触媒付白熱電球を示す概略図で
ある。FIG. 3 is a schematic view showing an incandescent lamp with a photocatalyst according to the present invention.
【図４】本発明に係る他の光触媒付蛍光ランプを示す概
略図である。FIG. 4 is a schematic view showing another fluorescent lamp with a photocatalyst according to the present invention.
【図５】図４に示した光触媒付蛍光ランプの製造方法の
説明図である。5 is an explanatory diagram of a method for manufacturing the fluorescent lamp with a photocatalyst shown in FIG.
１…ガラス管 ２…光触媒厚膜 ３…光触媒薄膜 ４…光触媒膜未形成部分 ５…口金 １１…ガラス管 １２…光触媒厚膜 １３…光触媒薄膜 １４…光触媒膜未形成部分 １５…口金 ２１…ガラス管 ２２…光触媒膜 ２３…光触媒膜未形成部分 ２４…口金 DESCRIPTION OF SYMBOLS 1 ... Glass tube 2 ... Photocatalyst thick film 3 ... Photocatalyst thin film 4 ... Photocatalyst film non-formed part 5 ... Cap 11 ... Glass tube 12 ... Photocatalyst thick film 13 ... Photocatalytic thin film 14 ... Photocatalyst film non-formed part 15 ... Cap 21 ... Glass tube 22 ... Photocatalyst film 23 ... Photocatalyst film non-formed part 24 ... Base
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木滑 寛治 東京都青梅市藤橋888番地 株式会社日立 製作所熱器ライティング事業部内 (72)発明者 市川 伸一 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 古川 義徳 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 渡辺 紀子 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroharu Kiname 888 Fujibashi, Ome-shi, Tokyo Inside the Heater Lighting Division of Hitachi, Ltd. (72) Inventor Shinichi Ichikawa 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd.Hitachi Laboratory (72) Inventor Yoshinori Furukawa 1-1-1, Omikacho, Hitachi City, Ibaraki Prefecture Hitachi, Ltd.Hitachi Laboratory (72) Inventor Noriko Watanabe 7, Omikamachi, Hitachi City, Ibaraki Prefecture No. 1 in the Hitachi Research Laboratory, Hitachi, Ltd.
Claims (4)
ス管に口金が設けられた光触媒付光源において、上記ガ
ラス管の上記口金に隣接する部分に光触媒膜未形成部分
を設けたことを特徴とする光触媒付光源。1. A light source with a photocatalyst in which a photocatalytic film is formed on a glass tube and the glass tube is provided with a base, wherein a portion where the photocatalytic film is not formed is provided on a portion of the glass tube adjacent to the base. Light source with a photocatalyst.
触媒厚膜より上記口金側に形成されかつ厚さが上記光触
媒厚膜の厚さの２分の１から５分の１である光触媒薄膜
とを設けたことを特徴とする請求項１に記載の光触媒付
光源。2. The photocatalyst film according to claim 1, wherein the photocatalyst film is a photocatalyst thick film and a photocatalyst thin film formed on the base side of the photocatalyst thick film and having a thickness of one half to one fifth of the thickness of the photocatalyst thick film. The light source with a photocatalyst according to claim 1, further comprising:
触媒厚膜より上記口金側に形成されかつ厚さが口金側端
部に向かって徐々に減少する光触媒薄膜とを設けたこと
を特徴とする請求項１に記載の光触媒付光源。3. A photocatalyst film comprising: a photocatalyst thick film; and a photocatalyst thin film formed on the base side with respect to the photocatalyst thick film and having a thickness gradually decreasing toward an end on the base side. The light source with a photocatalyst according to claim 1.
いたことを特徴とする請求項１に記載の光触媒付光源。4. The light source with a photocatalyst according to claim 1, wherein said base is made of a nonmetal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33702597A JP3567707B2 (en) | 1997-12-08 | 1997-12-08 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33702597A JP3567707B2 (en) | 1997-12-08 | 1997-12-08 | Fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11176382A true JPH11176382A (en) | 1999-07-02 |
| JP3567707B2 JP3567707B2 (en) | 2004-09-22 |
Family
ID=18304758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33702597A Expired - Fee Related JP3567707B2 (en) | 1997-12-08 | 1997-12-08 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3567707B2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6253657A (en) * | 1985-09-02 | 1987-03-09 | 株式会社 高エネルギ−利用技術研究所 | Deodorizing apparatus |
| JPH01169866A (en) * | 1987-12-25 | 1989-07-05 | Hitachi Ltd | Discharge lamp |
| JPH0559562A (en) * | 1991-08-30 | 1993-03-09 | Hitachi Ltd | Production of titanium oxide thin film and production of photochemical reactor by using this thin film |
| JPH10214599A (en) * | 1997-01-30 | 1998-08-11 | Toshiba Lighting & Technol Corp | Fluorescent lamp and luminaire |
| JPH1116538A (en) * | 1997-06-24 | 1999-01-22 | Hitachi Ltd | Light source with photocatalyst |
-
1997
- 1997-12-08 JP JP33702597A patent/JP3567707B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6253657A (en) * | 1985-09-02 | 1987-03-09 | 株式会社 高エネルギ−利用技術研究所 | Deodorizing apparatus |
| JPH01169866A (en) * | 1987-12-25 | 1989-07-05 | Hitachi Ltd | Discharge lamp |
| JPH0559562A (en) * | 1991-08-30 | 1993-03-09 | Hitachi Ltd | Production of titanium oxide thin film and production of photochemical reactor by using this thin film |
| JPH10214599A (en) * | 1997-01-30 | 1998-08-11 | Toshiba Lighting & Technol Corp | Fluorescent lamp and luminaire |
| JPH1116538A (en) * | 1997-06-24 | 1999-01-22 | Hitachi Ltd | Light source with photocatalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3567707B2 (en) | 2004-09-22 |
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