JP4513217B2 - Portable information equipment housing - Google Patents

Portable information equipment housing Download PDF

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Publication number
JP4513217B2
JP4513217B2 JP2001048741A JP2001048741A JP4513217B2 JP 4513217 B2 JP4513217 B2 JP 4513217B2 JP 2001048741 A JP2001048741 A JP 2001048741A JP 2001048741 A JP2001048741 A JP 2001048741A JP 4513217 B2 JP4513217 B2 JP 4513217B2
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JP
Japan
Prior art keywords
portable information
information device
resin
phosphorescent
information equipment
Prior art date
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Expired - Lifetime
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JP2001048741A
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Japanese (ja)
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JP2002252476A (en
Inventor
正巳 堤
隆之 藤原
耕太 西井
靖雄 長沼
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Fujitsu Ltd
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Fujitsu Ltd
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Description

【0001】
【発明の属する技術分野】
本発明はノート型パソコンや携帯電話等に使用する筐体に係り、更に詳しくは暗所にて発光する光学機能を有する蓄光性樹脂から成る筐体に関する。
【0002】
【従来の技術】
近年、社会の情報化が急速に普及しモバイルコンピュータをはじめとする携帯情報機器、携帯電話器等が増大している。これらの装置では外観のファッション性を考慮した筐体が開発されている。例えば筐体の材料として樹脂に蓄光剤を添加させ暗所でもって携帯機器の筐体を発光させファッション性を向上させた蓄光性樹脂である。
【0003】
【発明が解決しようとする課題】
この樹脂は蓄光性の蛍光剤の添加量を増すにつれて曲げ強さ、アイゾット衝撃強度等の機械的強度が低下するという問題がある。この問題を解決する技術にシリコーンオイルを添加した特開平11−80466号公報がある。しかしシリコーンオイルの添加量によって更に機械的強度が低下する。
【0004】
本発明の目的は、携帯情報機器の外観のファッション性を高め、曲げ強さ、アイゾット衝撃強度等の機械的強度が低下することのない筐体を提供するものである。
【0005】
【課題を解決するための手段】
上記目的を達成するために、請求項1に記載の発明は、蓄光性を有する蛍光体と、0.1〜0.5wt%のシリコーンオイルと、透明ABS樹脂とを含有することを特徴とする携帯情報機器筐体を提供する。従って、携帯情報機器の外観のファッション性を高め、且つ曲げ強さ、アイゾット衝撃強度等の機械的強度が低下することがない。
【0006】
請求項2に記載の発明は、請求項1に記載の携帯情報機器筐体に、更に白色顔料を添加したことを特徴とする携帯情報機器筐体を提供する。従って、携帯情報機器の外観のファッション性を高める。
【0007】
【発明の実施の形態】
図1は本発明に係る蓄光性樹脂を使用した携帯情報機器を示している。
また図2は本発明に係る蓄光性樹脂を使用した携帯電話器を示している。各図面において、同一の構成要素には共通の参照符号を付している。
【0008】
図面中の1は携帯情報機器または携帯電話器、2は筐体、3は表示部、4は入力部である。この携帯情報機器1または携帯電話器1の概略は具体的には液晶・ディスプレーからなる表示部3、例えばキーボードからなる入力部4、図示しない電源部、制御部と前述した表示部3、入力部4等を収納した筐体2から構成される。
【0009】
この携帯情報機器1または携帯電話器1の筐体2は蓄光剤を添加された蓄光性樹脂が射出成形された成形品である。また前述した入力部4の例えばキーボードのキートップに蓄光性樹脂からなる成形品を使用することができる。これら以外に文字、模様を蓄光性樹脂からなる成形品で作成してキートップ面に貼り付け、埋め込みすることができる。この構成にすることで暗所でのキー入力を容易にすることができる。また携帯電話器1の筐体2の一部、具体的にはアンテナを収納する付近に蓄光性樹脂からなる成形品を使用することができる。この構成にすることで暗所でもアンテナ先端に設けた着信ランプの光を蓄光性樹脂が蓄光され、そして発光を持続する。
【0010】
この蓄光性樹脂の製造方法について説明する。
1)最初に、10wt%の長残光性蛍光体と白色顔料としての1wt%ドライカラーとを混合し着色蛍光体を作る。ここで長残光性蛍光体は具体的には根本特殊化学株の製品名長残光性蛍光体ルミノーバG−300Mで比重約3.6の約100μmΦの粉体である。この長残光性蛍光体は緑色の蓄光性を有している。またドライカラーは例えば堺化学株の製品名R−32で約100μmΦの粉体である。このドライカラーは白色を着色するためのものである。
2)次に、シリコーンペレットと84〜88.9wt%の透明ABS樹脂とを加熱溶融し混合する。従って強化樹脂体ができる。このシリコーンペレットはシリコーンオイルをペレット状にしたもので、具体的には東レ・ダウコーニング・シリコーン株の製品名BY27−007で約3mmΦ×3mmの米粒状の固形である。また透明ABS樹脂は具体的にはダイセル化学株の製品名セビアンT180で約3mmΦ×3mmの米粒状の固形である。透明ABS樹脂とシリコーンペレットとの混合量を異ならせた7種類の試料を作った。試料1は添加量が0(wt%)であり、試料2は添加量が0.1(wt%)であり、試料3は0.2(wt%)であり、試料4は0.5(wt%)、試料5は1.0(wt%)、試料6は2.0(wt%)、試料7は5.0(wt%)である。
3)更に、7種類の試料をサイドフィーダとコイルフィーダとから構成される二軸押出機方式の混練機にて、サイドフィーダから着色蛍光体を送出し、コイルフィーダから強化樹脂体を送出して、混練機にて着色蛍光体と強化樹脂体とを混練する。そして蓄光性樹脂体を作った。この混練機はテクノベル株の製品名KZW15−30MGである。
4)続いて、この蓄光性樹脂体を射出成形機にて縦13mm×横126mm×幅3mmの成形品を作り機械強度を試験した。
【0011】
<機械強度試験>
・アイゾット衝撃強度試験
衝撃強度の試験方法はJIS K7110 に準拠した。そして表1にアイゾット衝撃試験結果を記している。
【0012】
【表1】

Figure 0004513217
【0013】
これら試験結果からシリコンオイルの添加量が多い程、衝撃強度は強いことが理解できる。携帯情報機器、携帯電話器は携帯され運搬中に物とぶつかり衝撃を受ける機会が多い。一般的に携帯機器は約6(kgf.cm/cm) 以上のアイゾット衝撃強度が必要とされている。
・曲げ強度試験
曲げ強度の試験方法はJIS K7055 に準拠した。そして表1に曲げ強度試験結果を記している。
携帯情報機器、携帯電話器は小型、軽量化を望まれるために薄型化される。しかし曲げ強度は一般的に約750(kgf./平方cm) 以上の曲げ強度が必要とされている。
【0014】
結果としてアイゾット衝撃強度と曲げ強度とを考慮して添加量の最適値は0.1〜0.5(wt%)である。
【0015】
【発明の効果】
以上説明したとおり、本発明を用いれば携帯情報機器の外観のファッション性を高め、且つ曲げ強さ、アイゾット衝撃強度等の機械的強度が低下することがない。
【図面の簡単な説明】
【図1】 本発明に係る蓄光性樹脂を使用した携帯情報機器
【図2】 本発明に係る蓄光性樹脂を使用した携帯電話器である。
【符号の説明】
1 携帯情報機器、携帯電話器、
2 筐体、
3 表示部、
4 入力部、[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a casing used for a notebook personal computer, a mobile phone or the like, and more particularly to a casing made of a luminous resin having an optical function of emitting light in a dark place.
[0002]
[Prior art]
In recent years, with the rapid spread of informatization in society, mobile information devices such as mobile computers, mobile phones, and the like are increasing. For these devices, a housing has been developed in consideration of the fashionable appearance. For example, it is a phosphorescent resin in which fashionability is improved by adding a phosphorescent agent to a resin as a material of the casing and causing the casing of the portable device to emit light in a dark place.
[0003]
[Problems to be solved by the invention]
This resin has a problem that the mechanical strength such as bending strength and Izod impact strength decreases as the addition amount of the phosphorescent fluorescent agent increases. As a technique for solving this problem, there is JP-A-11-80466 in which silicone oil is added. However, the mechanical strength further decreases depending on the amount of silicone oil added.
[0004]
An object of the present invention is to provide a housing that enhances the fashionability of the appearance of a portable information device and does not reduce mechanical strength such as bending strength and Izod impact strength.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 is characterized by containing a phosphor having phosphorescence, 0.1 to 0.5 wt% silicone oil, and a transparent ABS resin. A portable information device casing is provided. Therefore, the appearance of the portable information device is improved in fashion, and the mechanical strength such as bending strength and Izod impact strength is not lowered.
[0006]
According to a second aspect of the present invention, there is provided a portable information device casing characterized in that a white pigment is further added to the portable information device casing according to the first aspect. Therefore, the fashionable appearance of the portable information device is enhanced.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a portable information device using the phosphorescent resin according to the present invention.
FIG. 2 shows a cellular phone using the phosphorescent resin according to the present invention. In the drawings, the same reference numerals are assigned to the same components.
[0008]
In the drawings, 1 is a portable information device or mobile phone, 2 is a housing, 3 is a display unit, and 4 is an input unit. The outline of the portable information device 1 or the cellular phone 1 is specifically a display unit 3 made of a liquid crystal display, for example, an input unit 4 made of a keyboard, a power supply unit (not shown), a control unit, the display unit 3 described above, and an input unit. It is comprised from the housing | casing 2 which accommodated 4 grades.
[0009]
The portable information device 1 or the casing 2 of the cellular phone 1 is a molded product obtained by injection-molding a phosphorescent resin to which a phosphorescent agent is added. Further, a molded product made of a phosphorescent resin can be used for the key top of the keyboard of the input unit 4 described above, for example. In addition to these, a character and a pattern can be made of a molded product made of a luminous resin, and can be attached to the key top surface and embedded. With this configuration, key input in a dark place can be facilitated. Further, a molded product made of a phosphorescent resin can be used in a part of the housing 2 of the cellular phone 1, specifically, in the vicinity of housing the antenna. With this configuration, the light-absorbing resin stores the light of the incoming lamp provided at the tip of the antenna even in the dark, and the light emission is continued.
[0010]
The manufacturing method of this luminous resin is demonstrated.
1) First, 10 wt% long afterglow phosphor and 1 wt% dry color as a white pigment are mixed to make a colored phosphor. Here, the long afterglow phosphor is specifically a powder of about 100 μmΦ having a specific gravity of about 3.6 with a product name long afterglow phosphor Luminova G-300M manufactured by Nemoto Special Chemical Co., Ltd. This long afterglow phosphor has a green luminous property. The dry color is, for example, a powder of about 100 μmΦ under the product name R-32 of Sakai Chemical Co., Ltd. This dry color is for coloring white.
2) Next, the silicone pellets and 84 to 88.9 wt% transparent ABS resin are heated and melted and mixed. Accordingly, a reinforced resin body can be formed. This silicone pellet is formed by pelletizing silicone oil. Specifically, it is a solid rice-shaped solid of about 3 mmΦ × 3 mm under the product name BY27-007 of Toray Dow Corning Silicone. The transparent ABS resin is specifically a rice-like solid of about 3 mmΦ × 3 mm under the product name Sebian T180 of Daicel Chemical. Seven types of samples with different mixing amounts of transparent ABS resin and silicone pellets were prepared. Sample 1 has an addition amount of 0 (wt%), sample 2 has an addition amount of 0.1 (wt%), sample 3 has an amount of 0.2 (wt%), and sample 4 has an amount of 0.5 (wt%). wt%), sample 5 is 1.0 (wt%), sample 6 is 2.0 (wt%), and sample 7 is 5.0 (wt%).
3) Further, in the twin screw extruder type kneader composed of 7 types of samples and side feeder and coil feeder, the colored phosphor is sent out from the side feeder, and the reinforced resin body is sent out from the coil feeder. The colored phosphor and the reinforced resin body are kneaded with a kneader. And the phosphorescent resin body was made. This kneader is the product name KZW15-30MG of Technobel.
4) Subsequently, this phosphorescent resin body was made into a molded product having a length of 13 mm, a width of 126 mm, and a width of 3 mm using an injection molding machine, and the mechanical strength was tested.
[0011]
<Mechanical strength test>
-Izod impact strength test The impact strength test method conformed to JIS K7110. Table 1 shows the Izod impact test results.
[0012]
[Table 1]
Figure 0004513217
[0013]
From these test results, it can be understood that the greater the amount of silicon oil added, the stronger the impact strength. Mobile information devices and mobile phones are often carried and are subject to impacts when transported. Generally, portable devices are required to have an Izod impact strength of about 6 (kgf.cm/cm) or more.
・ Bending strength test The bending strength test method conformed to JIS K7055. Table 1 shows the bending strength test results.
Mobile information devices and mobile phones are made thinner because they are desired to be smaller and lighter. However, the bending strength is generally required to be about 750 (kgf./square cm) or more.
[0014]
As a result, the optimum value of the addition amount is 0.1 to 0.5 (wt%) in consideration of Izod impact strength and bending strength.
[0015]
【The invention's effect】
As described above, if the present invention is used, the fashionability of the appearance of the portable information device is enhanced, and the mechanical strength such as bending strength and Izod impact strength is not lowered.
[Brief description of the drawings]
FIG. 1 is a portable information device using the luminous resin according to the present invention. FIG. 2 is a mobile phone using the luminous resin according to the present invention.
[Explanation of symbols]
1 Mobile information devices, mobile phones,
2 housing,
3 Display section,
4 Input section,

Claims (2)

蓄光性を有する蛍光体と、0.1〜0.5wt%のシリコーンオイルと、透明ABS樹脂とを含有することを特徴とする携帯情報機器筐体。A portable information device housing comprising a phosphor having a phosphorescent property, 0.1 to 0.5 wt% silicone oil, and a transparent ABS resin. 請求項1に記載の携帯情報機器筐体に、更に白色顔料を添加したことを特徴とする携帯情報機器筐体。A portable information device case, wherein a white pigment is further added to the portable information device case according to claim 1.
JP2001048741A 2001-02-23 2001-02-23 Portable information equipment housing Expired - Lifetime JP4513217B2 (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001048741A JP4513217B2 (en) 2001-02-23 2001-02-23 Portable information equipment housing

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JP4513217B2 true JP4513217B2 (en) 2010-07-28

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102763400B (en) 2010-02-12 2015-07-15 京瓷株式会社 Portable electronic device
CN107892787B (en) * 2017-10-12 2020-11-17 义乌市添诚科技有限公司 Heat dissipation plastic for noctilucent television and processing technology thereof
CN114702778A (en) * 2022-03-23 2022-07-05 浙江一马新材料有限公司 ABS plastic based on long afterglow material and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1180466A (en) * 1997-09-12 1999-03-26 Asahi Chem Ind Co Ltd Polystyrene resin composition and molded article thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1180466A (en) * 1997-09-12 1999-03-26 Asahi Chem Ind Co Ltd Polystyrene resin composition and molded article thereof

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