JP4489264B2 - Colored lamp device - Google Patents
Colored lamp device Download PDFInfo
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- JP4489264B2 JP4489264B2 JP2000235089A JP2000235089A JP4489264B2 JP 4489264 B2 JP4489264 B2 JP 4489264B2 JP 2000235089 A JP2000235089 A JP 2000235089A JP 2000235089 A JP2000235089 A JP 2000235089A JP 4489264 B2 JP4489264 B2 JP 4489264B2
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- Prior art keywords
- metal oxide
- colored
- ultrafine particles
- lamp device
- oxide ultrafine
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
- Optical Filters (AREA)
Description
【０００１】
【発明の属する技術分野】
この発明は、耐熱性に優れた有色金属酸化物超微粒子を含有した塗布液組成物を反射鏡の内面に塗布し透明有色塗膜層を形成した有色ランプ装置に関する。
【０００２】
車両に使用される各種ランプとしては、ランプのプラスチックカバーを着色して使用されている。また、ランプのガラスバルブの外面に着色塗膜を設けたりして使用されている。
【０００３】
【発明が解決しようとする課題】
上記のように従来のものは、ランプのフラスチックカバーを着色するため、車両のデザインが限定されたり、着色ランプの場合は、ランプが切れたりした場合、特殊な着色ランプを使用しなければならないという制約があった。
【０００４】
本発明は、このような問題点を解決するためなされたもので、耐熱性に優れた有色金属酸化物超微粒子を含有した塗布液組成物を反射鏡の内面に塗布し有色塗膜層を形成した有色ランプ装置を提供するものである。
【０００５】
【課題を解決するための手段】
本発明は、有機溶媒と、アルキルシリケートのモノマー及びオリゴマーなどの重合体から選ばれた少なくとも１種からなるバインダー成分と、直流アークプラズマ法で製造された平均粒径１０〜９０ｎｍの有色金属酸化物超微粒子を含有する塗布液組成物を反射鏡の内面に塗布し、加熱して透明有色塗膜層を形成した有色ランプ装置に存する。
【０００６】
また、本発明に使用される塗布液組成物は、直流アークプラズマ法で製造された平均粒径１０〜９０ｎｍの有色金属酸化物超微粒子１００重量部に対して、有機溶媒２００〜１８００重量部およびアルキルシリケートのモノマー及びオリゴマーなどの重合体から選ばれた少なくとも１種からなるバインダー成分８０〜３００重量部を配合したものである。
【０００７】
【発明の実施の形態】
本発明で用いられる直流アークプラズマ法で製造された平均粒径１０〜９０ｎｍの有色金属酸化物超微粒子は、赤色系のα−Ｆｅ2 Ｏ3 、青色系のＣｏ−Ａｌ系複合金属酸化物、黄色系のＢｉ2 Ｏ3 、ＬｉＦｅＯ2 、緑色系のＴｉ−Ｃｏ−Ｎｉ−Ｚｎ系複合金属酸化物、橙色系のα−Ｆｅ2 Ｏ3 とＬｉＦｅＯ2 の混合物、赤紫色系のＣｏ2 ＳｉＯ4 、α−Ｆｅ2 Ｏ3 とＢｉ2 Ｏ3 の混合物、焦げ茶色系のγ−Ｆｅ2 Ｏ3 、黒色系のＦｅ3 Ｏ4 （マグネタイト）、Ｃｕ−Ｆｅ−Ｍｎ系複合金属酸化物、Ｃｕ−Ｃｒ−Ｍｎ系複合金属酸化物、Ｆｅ−Ｍｎ系複合金属酸化物、Ｃｕ−Ｆｅ−Ｍｎ−Ａｌ系複合金属酸化物、Ｃｕ−Ｆｅ−Ｍｎ−Ｓｉ系複合金属酸化物などが挙げられ、光触媒のＴｉ０2 微粒子等を含むことも可能である。
【０００８】
上記の直流アークプラズマ法は、直流アークプラズマ装置で、各種金属成分を有する原料を消費アノート電極とし、カソード電極からアルゴンガス等のプラズマフレームを発生させ、消費アノードの原料を加熱、蒸発させ、そのプラズマ状態の金属成分を酸化、冷却することによって各種の有色金属酸化物超微粒子を製造することができる。
上記の該有色金属酸化物超微粒子は、酸化または還元雰囲気下で焼成されることにより発色性を向上させたもの、或いは、直流アークプラズマ法で製造された金属酸化物超微粒子と、複合金属酸化物を構成する他の金属の炭酸塩、酸化物、水酸化物などの化合物と混合した後、酸化雰囲気下で焼成さて製造されたものである。
【０００９】
上記の有色金属酸化物超微粒子は、有機溶媒とのスラリー工程での分散性に富み、高濃度のものでも透明性が高いので、反射板の内面に塗布し、加熱して透明有色塗膜層を形成した場合、ランプの光度を落とすことなく、また、塗膜層が色むらになりにくい特徴を有している。
【００１０】
スラリー化に用いられる有機溶媒としては、エチルアルコール、イソプロピルアルコール、ｎ−プロピルアルコール、ｎ−アミルアルコール、エチレングリコール、ジエチレングリコールなどのアルコール類、トルエン、キシレンなどの炭化水素系溶媒、メチルセルソルブ、ブチルセルソルブ、カルビトールなどのエーテル類、メチルエチルケトン、メチルイソブチルケトンなどのケトン類、酢酸エチル、酢酸ブチルなどのエステル類などを挙げることができる。
一般には、沸点の違う数種類を併用することによって乾燥速度を最適に制御でき、均一な塗膜とすることができるので数種類を併用することが好ましい。
【００１１】
本発明に用いられるアルキルシリケートのモノマー及びオリゴマーなどの重合体から選ばれた少なくとも１種からなるバインダー成分は、加水分解反応によりシリカとなるものであれば特に限定されず、例えばメチルシリケート、エチルシリケートなどのモノマータイプやこれらのオリゴマーなどの重合体を挙げることができる。通常、上記のスラリーと混合した後、リン酸、塩酸、硝酸などの酸触媒を加えられる。
【００１２】
【実施例】
以下に実施例を挙げて具体的に本発明を説明する。
【００１３】
実施例１
直流アークプラズマ装置で、コバルトおよびアルミニウムをモル比で１：４含有する原料を消費アノート電極とし、カソード電極からアルゴンガス等のプラズマフレームを発生させ、消費アノードの原料を加熱、蒸発させ、そのプラズマ状態のコバルトおよびアルミニウムを酸化、冷却することによって平均粒径３０ｎｍの暗い青色のＣｏ−Ａｌ系複合金属酸化物超微粒子を得た。
該超微粒子を大気中、約９００℃で焼成処理を行うと、平均粒径３５ｎｍの鮮やかな青色のＣｏ−Ａｌ系複合金属酸化物超微粒子を得た。
上記の青色のＣｏ−Ａｌ系複合金属酸化物超微粒子１００重量部に対して、エタノール、イソプロピルアルコール、エチルセルソルブからなる混合有機溶媒４００重量部を配合し、ビーズミルを用いてスラリーを製造した後、エチルシリケート１５０重量部とリン酸（酸触媒）０．４重量部を加え攪拌して、青色の塗布液組成物を得た。
この塗布液組成物は、スラリー工程での分散性が良好であり、ランぷの反射板の内面に５μｍの厚さに塗布し、乾燥後、２００〜３００℃で熱処理し、青色の透明硬化塗膜層を形成した。上記の硬化塗膜層は、光の透過性に優れ、ヘッドライトに使用すると青色光の照射ランプとして使用できる。
【００１４】
実施例２
直流アークプラズマ装置で、鉄原料を消費アノート電極とし、カソード電極からアルゴンガス等のプラズマフレームを発生させ、消費アノードの鉄原料を加熱、蒸発させ、そのプラズマ状態の鉄を酸化、冷却することによって平均粒径３０ｎｍの焦げ茶色のγ−Ｆｅ2 Ｏ3 超微粒子を得た。
このγ−Ｆｅ2 Ｏ3 超微粒子を大気中、約６００℃で焼成処理し、平均粒径４０ｎｍの赤色のα−Ｆｅ2 Ｏ3 超微粒子に変換した。
上記の赤色のα−Ｆｅ2 Ｏ3 超微粒子１００重量部に対して、エタノール、イソプロピルアルコール、ｎ−プロピルアルコールからなる混合有機溶媒６００重量部を配合し、ビーズミルを用いてスラリーを製造した後、エチルシリケートのオリゴマー２００重量部とリン酸（酸触媒）０．５重量部を加え攪拌して、赤色の塗布液組成物を得た。
この塗布液組成物は、スラリー工程での分散性が良好であり、ブレーキランプの反射板に４μｍの厚さに塗布し、乾燥後、３００℃で熱処理し、赤色の透明硬化塗膜層を形成した。表面のプラスチックカバーが透明であっても赤色発光が明瞭に認識できるので、色デザインの自由度に貢献できる。
【００１５】
【発明の効果】
本発明の塗布液組成物は、直流アークプラズマ法で製造された平均粒径１０〜９０ｎｍの有色金属酸化物超微粒子であるので、有機溶媒とのスラリー工程での分散性に富み、高濃度のものでも色むらを生じない。透明性、着色性も良いので、各種の色の金属酸化物超微粒子を含んだ着色塗膜層を反射板に設けることにより前照灯、ブレーキランプ、ターンシグナルライプやフォグランプに有用であり、各種ランプ装置のカバーを透明や薄い色にすることができるので、車のデザインの自由度が高まるという効果がある。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a colored lamp device in which a coating composition containing colored metal oxide ultrafine particles having excellent heat resistance is applied to the inner surface of a reflecting mirror to form a transparent colored coating layer.
[0002]
Various lamps used in vehicles are used by coloring the plastic cover of the lamp. In addition, a colored coating film is provided on the outer surface of the glass bulb of the lamp.
[0003]
[Problems to be solved by the invention]
As described above, since the conventional one colors the plastic cover of the lamp, if the design of the vehicle is limited, or if the lamp is out of color, a special colored lamp must be used. There was a restriction.
[0004]
The present invention has been made to solve such problems, and a coating composition containing colored metal oxide ultrafine particles having excellent heat resistance is applied to the inner surface of a reflecting mirror to form a colored coating layer. A colored lamp device is provided.
[0005]
[Means for Solving the Problems]
The present invention relates to an organic solvent, a binder component comprising at least one selected from polymers such as alkyl silicate monomers and oligomers, and a colored metal oxide having an average particle size of 10 to 90 nm produced by a direct current arc plasma method. It exists in the colored lamp apparatus which apply | coated the coating liquid composition containing an ultrafine particle on the inner surface of a reflective mirror, and formed the transparent colored coating-film layer by heating.
[0006]
Moreover, the coating liquid composition used in the present invention comprises 200 to 1800 parts by weight of an organic solvent with respect to 100 parts by weight of colored metal oxide ultrafine particles having an average particle diameter of 10 to 90 nm produced by a direct current arc plasma method. 80 to 300 parts by weight of a binder component composed of at least one selected from polymers such as alkyl silicate monomers and oligomers are blended.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The colored metal oxide ultrafine particles having an average particle diameter of 10 to 90 nm produced by the direct current arc plasma method used in the present invention are red α-Fe 2 O 3 , blue Co—Al composite metal oxide, Yellow-based Bi 2 O 3 , LiFeO 2 , green-based Ti—Co—Ni—Zn-based mixed metal oxide, orange-based mixture of α-Fe 2 O 3 and LiFeO 2 , red-purple-based Co 2 SiO 4 , Α-Fe 2 O 3 and Bi 2 O 3 , dark brown γ-Fe 2 O 3 , black Fe 3 O 4 (magnetite), Cu—Fe—Mn composite metal oxide, Cu— Cr-Mn composite metal oxide, Fe-Mn composite metal oxide, Cu-Fe-Mn-Al composite metal oxide, Cu-Fe-Mn-Si composite metal oxide, etc. it is also possible to include ti0 2 fine particles.
[0008]
The above direct-current arc plasma method is a direct-current arc plasma apparatus in which a raw material having various metal components is used as a consumption note electrode, a plasma flame such as argon gas is generated from the cathode electrode, and the raw material of the consumption anode is heated and evaporated. Various colored metal oxide ultrafine particles can be produced by oxidizing and cooling the metal component in the plasma state.
The above-mentioned colored metal oxide ultrafine particles have improved color developability by firing in an oxidizing or reducing atmosphere, or metal oxide ultrafine particles produced by a direct current arc plasma method, and composite metal oxide After being mixed with a compound such as carbonate, oxide or hydroxide of other metals constituting the product, it is manufactured by firing in an oxidizing atmosphere.
[0009]
The above-mentioned colored metal oxide ultrafine particles are rich in dispersibility in a slurry process with an organic solvent, and are highly transparent even at a high concentration. Therefore, they are applied to the inner surface of the reflector and heated to form a transparent colored coating layer. When the film is formed, the brightness of the lamp is not lowered, and the coating layer has characteristics that the color unevenness is not easily caused.
[0010]
Examples of organic solvents used for slurrying include alcohols such as ethyl alcohol, isopropyl alcohol, n-propyl alcohol, n-amyl alcohol, ethylene glycol and diethylene glycol, hydrocarbon solvents such as toluene and xylene, methyl cellosolve, and butyl. Examples thereof include ethers such as cellosolve and carbitol, ketones such as methyl ethyl ketone and methyl isobutyl ketone, and esters such as ethyl acetate and butyl acetate.
In general, it is preferable to use several types in combination since the drying speed can be optimally controlled by using several types having different boiling points and a uniform coating film can be obtained.
[0011]
The binder component composed of at least one selected from polymers such as alkyl silicate monomers and oligomers used in the present invention is not particularly limited as long as it becomes silica by hydrolysis reaction. For example, methyl silicate, ethyl silicate Examples thereof include polymers such as monomer types and oligomers thereof. Usually, after mixing with said slurry, acid catalysts, such as phosphoric acid, hydrochloric acid, nitric acid, are added.
[0012]
【Example】
Hereinafter, the present invention will be specifically described with reference to examples.
[0013]
Example 1
In a DC arc plasma apparatus, a raw material containing cobalt and aluminum in a molar ratio of 1: 4 is used as a consumption annotated electrode, a plasma flame such as argon gas is generated from the cathode electrode, and the raw material of the consumed anode is heated and evaporated, and the plasma The cobalt and aluminum in the state were oxidized and cooled to obtain dark blue Co—Al based composite metal oxide ultrafine particles having an average particle diameter of 30 nm.
When the ultrafine particles were baked at about 900 ° C. in the atmosphere, bright blue Co—Al based composite metal oxide ultrafine particles having an average particle diameter of 35 nm were obtained.
After blending 400 parts by weight of a mixed organic solvent consisting of ethanol, isopropyl alcohol and ethyl cellosolve with 100 parts by weight of the above-mentioned blue Co—Al composite metal oxide ultrafine particles, and producing a slurry using a bead mill Then, 150 parts by weight of ethyl silicate and 0.4 parts by weight of phosphoric acid (acid catalyst) were added and stirred to obtain a blue coating solution composition.
This coating solution composition has good dispersibility in the slurry process, and is applied to the inner surface of the lamp reflector to a thickness of 5 μm, dried, and heat-treated at 200 to 300 ° C. to give a blue transparent cured coating. A membrane layer was formed. The cured coating layer is excellent in light transmission and can be used as a blue light irradiation lamp when used in a headlight.
[0014]
Example 2
In a DC arc plasma device, the iron raw material is used as a consumption electrode, a plasma flame such as argon gas is generated from the cathode electrode, the iron raw material of the consumed anode is heated and evaporated, and the iron in the plasma state is oxidized and cooled. Dark brown γ-Fe 2 O 3 ultrafine particles having an average particle diameter of 30 nm were obtained.
The γ-Fe 2 O 3 ultrafine particles were baked at about 600 ° C. in the atmosphere, and converted to red α-Fe 2 O 3 ultrafine particles having an average particle diameter of 40 nm.
After blending 600 parts by weight of a mixed organic solvent composed of ethanol, isopropyl alcohol, and n-propyl alcohol with respect to 100 parts by weight of the above-mentioned red α-Fe 2 O 3 ultrafine particles, and producing a slurry using a bead mill, 200 parts by weight of ethyl silicate oligomer and 0.5 parts by weight of phosphoric acid (acid catalyst) were added and stirred to obtain a red coating solution composition.
This coating liquid composition has good dispersibility in the slurry process, and is applied to a reflector of a brake lamp to a thickness of 4 μm, dried, and then heat treated at 300 ° C. to form a red transparent cured coating layer. did. Even if the plastic cover on the surface is transparent, red light emission can be clearly recognized, contributing to the freedom of color design.
[0015]
【The invention's effect】
Since the coating liquid composition of the present invention is a colored metal oxide ultrafine particle having an average particle diameter of 10 to 90 nm produced by a direct current arc plasma method, it is rich in dispersibility in a slurry process with an organic solvent and has a high concentration. Even the thing does not cause uneven color. Because it has good transparency and colorability, it is useful for headlamps, brake lamps, turn signal lamps and fog lamps by providing a colored coating layer containing metal oxide ultrafine particles of various colors on the reflector. Since the cover of the lamp device can be made transparent or light, there is an effect that the degree of freedom in designing the car is increased.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000235089A JP4489264B2 (en) | 2000-08-03 | 2000-08-03 | Colored lamp device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000235089A JP4489264B2 (en) | 2000-08-03 | 2000-08-03 | Colored lamp device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002050218A JP2002050218A (en) | 2002-02-15 |
| JP4489264B2 true JP4489264B2 (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000235089A Expired - Fee Related JP4489264B2 (en) | 2000-08-03 | 2000-08-03 | Colored lamp device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4489264B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100504970B1 (en) * | 2003-07-29 | 2005-07-29 | 이인구 | an incandescent of heatproof oxide coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56119774A (en) * | 1980-02-22 | 1981-09-19 | Tokyo Denshi Kagaku Kabushiki | Liquid composition for forming metal oxide coat |
| JPH0612906A (en) * | 1992-03-16 | 1994-01-21 | Yokohama Kiko Kk | Luminaire suitable for art object, and the like |
| JP3242236B2 (en) * | 1993-09-16 | 2001-12-25 | 大日精化工業株式会社 | Method for producing fine particulate composite oxide blue pigment |
| JPH103889A (en) * | 1996-04-19 | 1998-01-06 | Toshiba Lighting & Technol Corp | Light bulbs, colored light bulbs for vehicles, lighting devices for vehicles, and vehicles |
| JPH11278844A (en) * | 1998-03-25 | 1999-10-12 | C I Kasei Co Ltd | Non-aqueous dispersion of titanium dioxide ultrafine particles and method for producing the same |
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2000
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| JP2002050218A (en) | 2002-02-15 |
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