JPS63114034A - Cover glass adhesion type cathode-ray tube - Google Patents

Cover glass adhesion type cathode-ray tube

Info

Publication number
JPS63114034A
JPS63114034A JP25903886A JP25903886A JPS63114034A JP S63114034 A JPS63114034 A JP S63114034A JP 25903886 A JP25903886 A JP 25903886A JP 25903886 A JP25903886 A JP 25903886A JP S63114034 A JPS63114034 A JP S63114034A
Authority
JP
Japan
Prior art keywords
resin
protective glass
sealing resin
ray tube
face panel
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.)
Pending
Application number
JP25903886A
Other languages
Japanese (ja)
Inventor
Takashi Ishii
隆 石井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP25903886A priority Critical patent/JPS63114034A/en
Publication of JPS63114034A publication Critical patent/JPS63114034A/en
Pending legal-status Critical Current

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  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

PURPOSE:To prevent the molding resin from leaking and improve productivity by setting the ratio to two or more between the width and thickness of the seal resin which is a trimming frame over the whole periphery. CONSTITUTION:After the periphery of a cover glass 3 is coated with seal resin 5 except a portion to become an injecting port 4, the glass 3 is set on the face panel front face 2 of a cathode ray tube 1, and the resin 5 is hardened by the radiation of ultraviolet rays. The resin 5 sticks and fixes the glass 3 and the panel front face 2 at both peripheries and serves as a trimming frame sealing a gap between the glass 3 and the panel front face 2 except a portion to become an injecting port 4. The ratio W/T between the thickness T and the width W is set to two or more over the whole periphery of the resin 5 serving as the trimming frame. In this constitution, the gap formed with the panel front face 2, glass 3, and resin 5 is filled with molding resin 7 with the injection port 4 set upward. Accordingly, the molding resin is prevented from leaking and the productivity can be improved.

Description

【発明の詳細な説明】 [産業上の利用分野〕 この発明は陰極線管のフェースパネル前面に保護ガラス
を接着した保護ガラス接着形陰極綿管に関するものであ
る。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cathode cotton tube with a protective glass bonded to the front face panel of the cathode ray tube.

[従来の技術] 一般に、呟g’r3糸虹管に、安全ガラスまたは反射防
止ガラスとしての保護ガラスを接着する際には、つぎの
ような方法が用いられる。
[Prior Art] Generally, the following method is used when bonding protective glass as safety glass or anti-reflection glass to a tuft g'r3 tube.

まず、第5図の保護ガラス(3)の周縁に、注入口(4
)となる部分だけを残してチクゾ性の紫外線硬化樹脂、
いわゆる、シール樹脂(5)を所定の幅と厚みに塗布す
る。
First, place the injection port (4) on the periphery of the protective glass (3) in Figure 5.
), leaving only the part that becomes
A so-called sealing resin (5) is applied to a predetermined width and thickness.

上記保護ガラス(3)は、陰極線管(1)のフェースパ
ネル前面(2)とほぼ等しい曲率な有している。保護ガ
ラス(3)をフェースパネル前面(2)に、所定の空隙
を隔てて対面するようにセットする。そののち、紫外線
光源(6)から紫外線を照射して、シール樹脂(5)を
硬化させる。このシール樹脂(5)の硬化によって、保
護ガラス(3)がフェースパネル前面(2)に接着固定
される。このとき、シール樹脂(5)は、保3バガラス
(3)とフェースパネル前面(2)とを接着固定すると
ともに、両者間の上記空隙を注入口(4)となる部分を
残して封止するふちとり枠となっている。
The protective glass (3) has approximately the same curvature as the front surface (2) of the face panel of the cathode ray tube (1). The protective glass (3) is set on the front surface of the face panel (2) so as to face each other with a predetermined gap in between. Thereafter, the sealing resin (5) is cured by irradiating ultraviolet light from the ultraviolet light source (6). By curing the sealing resin (5), the protective glass (3) is adhesively fixed to the front face panel (2). At this time, the sealing resin (5) adheres and fixes the protective glass (3) and the front face panel (2), and seals the gap between the two, leaving a portion that will become the injection port (4). It has a bordered frame.

そののち、第7図のように、注入口(4)を上にした状
態で、注入口(4)から、ふちどり枠であるシール樹脂
(5)で囲われた空隙内に、透明な紫外線樹脂、いわゆ
る、注型樹脂(7)を充填する。充填後、紫外線光源(
6)から紫外線を照射して、注型樹脂(7)を硬化させ
て、保護ガラス(3)をフェースパネル前面(2)に接
着する。そののち、第8図のように、陰極線管(1)に
、肩部からの爆縮を防止するための防爆金具(8)を、
テンションバンド(8)により取り付けて保護ガラス接
着形陰極線管を完成する。この保護ガラス接着形陰極線
管は、取付具(lO)によりテレビセットに取付可能で
ある。
After that, as shown in Figure 7, with the injection port (4) facing up, transparent ultraviolet resin is poured from the injection port (4) into the gap surrounded by the sealing resin (5), which is a border frame. , so-called casting resin (7) is filled. After filling, use an ultraviolet light source (
The casting resin (7) is cured by irradiating ultraviolet rays from step 6), and the protective glass (3) is bonded to the front surface of the face panel (2). After that, as shown in Figure 8, an explosion-proof fitting (8) is attached to the cathode ray tube (1) to prevent implosion from the shoulder.
Attach with tension band (8) to complete the protective glass adhesive type cathode ray tube. This protective glass-adhesive cathode ray tube can be attached to a television set using an attachment (lO).

[発明が解決しようとする問題点] 従来の保護ガラス接着形陰極線管では、第7図の注入口
(4)から、ふちとり枠であるシール樹脂(5)で囲わ
れた空隙内に、注型樹脂(7)を充填する際、シール樹
脂(5)が注型樹脂(7)の重量をささえきれずに、保
護ガラス(3)またはフェースパネル前面(2)との接
着面で剥離を生じ、剥離した部分から注型樹脂(7)が
洩れるという問題点があった。
[Problems to be Solved by the Invention] In the conventional protective glass adhesive type cathode ray tube, the injection port (4) in FIG. When filling the mold resin (7), the seal resin (5) cannot support the weight of the mold resin (7) and peels off at the adhesive surface with the protective glass (3) or the front face panel (2). However, there was a problem in that the casting resin (7) leaked from the peeled part.

シール樹脂(5)は、ふちとり枠の下辺(5a)となる
部分の中央付近や、ふちどり枠の上辺(5c)となる部
分の注入口(4)付近で、上記剥離を生じることが多い
。また、注入口(4)付近で生じた剥離が全周に広がっ
て、保護ガラス(3)が外れることがあった。
The sealing resin (5) often peels off near the center of the bottom edge (5a) of the border frame and near the injection port (4) in the top edge (5c) of the border frame. In addition, peeling that occurred near the injection port (4) spread around the entire circumference, and the protective glass (3) sometimes came off.

この発明は上記のような問題点を解決するためになされ
たもので、注型樹脂の洩れを防止できる新規な構造の保
護ガラス接着形陰極線管を提供することを目的とする。
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a protective glass bonded cathode ray tube having a novel structure that can prevent leakage of casting resin.

[問題点を解決するための手段] この発明にかかる保護ガラス接着形陰極線管は、ふちど
り枠となるシール樹脂が、全周にわたって、厚さに対す
る幅の比率が2以上となっている。
[Means for Solving the Problems] In the protective glass adhesive type cathode ray tube according to the present invention, the sealing resin forming the border frame has a width to thickness ratio of 2 or more over the entire circumference.

[作用] この発明において、ふちどり枠となるシール樹脂は、全
周にわたって、厚さに対する幅の比率が2以上となって
いるので、保護ガラスおよびフェースパネル前面に対す
る接着力が強い。このため、ふちどり枠で囲われた空隙
内に注型樹脂を充填する際、シール樹脂は注型樹脂の重
量に耐え得るので、保護ガラスおよびフェースパネル前
面との接着面で剥離を生じることがない。したがって、
注型樹脂の樹脂洩れが防止される。
[Function] In the present invention, the sealing resin that forms the border frame has a width-to-thickness ratio of 2 or more over the entire circumference, so it has strong adhesion to the protective glass and the front surface of the face panel. Therefore, when filling the void surrounded by the border with casting resin, the sealing resin can withstand the weight of the casting resin, so there will be no peeling at the adhesive surface between the protective glass and the front of the face panel. . therefore,
Resin leakage of casting resin is prevented.

[発明の実施例] 以下、この発明の一実施例を図面にしたがって説明する
[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings.

第1図において、(1)は3フインチ形の陰極線管であ
り、そのフェースパネル前面(2)には、シール樹脂(
5)によって保護ガラス(3)が接着固定されており、
保護ガラス(3)はフェースパネル前面(2)に所定の
空隙を隔てて対面している。
In Figure 1, (1) is a three-inch cathode ray tube, and the front face panel (2) has a sealing resin (
5), the protective glass (3) is fixed with adhesive,
The protective glass (3) faces the front face panel (2) with a predetermined gap in between.

上記保護ガラス(3)とフェースパネル前面(2)とを
シール樹脂(5)によって接着固定する際には、シール
樹脂(5)を保護ガラス(3)の周縁に、注入口(4)
(第2図)となる一部分を残して塗布したのち、保護ガ
ラス(3)をフェースパネル前面(2)に所定の空隙を
隔ててセットし、シール樹脂(5)を紫外線照射によっ
て硬化させる。
When adhesively fixing the protective glass (3) and the front surface of the face panel (2) with the sealing resin (5), apply the sealing resin (5) to the periphery of the protective glass (3) and attach it to the injection port (4).
(Fig. 2), the protective glass (3) is set on the front face panel (2) with a predetermined gap in between, and the sealing resin (5) is cured by ultraviolet irradiation.

第2図のように、シール樹脂(5)は、保護ガラス(3
)とフェースパネル前面(2)とを、両者の周縁で接着
固定するとともに、保護ガラス(3)とフェースパネル
前面(2)との間の空隙を注入口(4)となる一部分を
残して封止するふちとり枠となっている。
As shown in Figure 2, the sealing resin (5) is attached to the protective glass (3).
) and the front face panel (2) are adhesively fixed at their peripheral edges, and the gap between the protective glass (3) and the front face panel (2) is sealed leaving a part that will become the injection port (4). It has a border frame that stops it.

上記シール樹脂(5)としては、紫外線硬化アクリルタ
イプのものが用いられている。
As the sealing resin (5), an ultraviolet curing acrylic type is used.

ここで、ふちどり枠となるシール樹脂(5)は、全周に
わたって、厚さT(第1図)に対する幅Wの比率W/T
が2以上となっている。ここで、上記比率W/Tを2以
上とするために、シール樹脂(5)は、ふちとり枠の下
辺(5a)となる部分の幅Wが、−様でなく、第3図の
曲線Bで示すように、中央で最も広く、両端に向かうに
したがって狭くなっている。これは、第1図の保護ガラ
ス(3)とフェースパネル前面(2)との曲率が完全に
は一致していないことに起因する。つまり、保護ガラス
(3)をフェースパネル前面(2)にセットした場合、
シール樹脂(5)は、ふちとり枠の下辺(5a)となる
部分の厚さT(第1図)が、−様でなく、第3図の曲線
Aで示すように、中央で最も厚く、両端に向かうにした
がって薄くなるからである。ここで、第2図のシール樹
脂(5)は、ふちとり粋の下辺(5a)となる部分の比
率W/Tが、中央で約2.5、両端で約4となっている
Here, the sealing resin (5) serving as the border frame has a ratio W/T of the width W to the thickness T (Fig. 1) over the entire circumference.
is 2 or more. Here, in order to make the above ratio W/T 2 or more, the sealing resin (5) has a width W of the lower side (5a) of the border frame, which is curved B in FIG. As shown, it is widest in the center and narrows towards the ends. This is due to the fact that the curvatures of the protective glass (3) and the front surface of the face panel (2) in FIG. 1 do not completely match. In other words, when the protective glass (3) is set on the front of the face panel (2),
The sealing resin (5) has a thickness T (Fig. 1) of the portion that becomes the lower side (5a) of the border frame, which is thickest at the center as shown by curve A in Fig. 3, rather than --like. This is because it becomes thinner toward both ends. Here, in the sealing resin (5) shown in FIG. 2, the ratio W/T of the lower side (5a) of the edged edge is about 2.5 at the center and about 4 at both ends.

上記構成において、フェースパネル前面(2)、保護ガ
ラス(3)およびシール樹脂(5)で形成された空隙内
、つまり、ふちとり枠であるシール樹脂(5)に囲われ
た空隙内に、注入口(4)を1−にした状態で、注入口
(4)から注型樹脂(7)(第7図)が充填される。
In the above configuration, a note is placed in the gap formed by the front face panel (2), the protective glass (3), and the sealing resin (5), that is, in the gap surrounded by the sealing resin (5), which is the border frame. With the inlet (4) set to 1-, the casting resin (7) (FIG. 7) is filled from the injection port (4).

このとき、ふちどり枠であるシール樹脂(5)は、全周
にわたって、厚さT(第1図)に対する幅Wの比率W/
Tが2以上となっているので、フェースパネル前面(2
)および保護ガラス(3)に対する接着力が強い。
At this time, the sealing resin (5) that is the border frame has a ratio W/of the width W to the thickness T (Fig. 1) over the entire circumference.
Since T is 2 or more, the front of the face panel (2
) and protective glass (3).

このため、シール樹脂(5)は、ふちどり枠の側辺(5
b)および−に1辺(5c)となる部分はもちろん、充
填された注型樹脂(7)(第7図)の重量が最も多く加
わる部分、つまり、ふちどり枠の下辺(5a)となる部
分でも、注型樹脂(7)(第7図)の重量に十分に耐え
得るので、フェースパネル前面(2)または保護ガラス
(3)から剥離することがない。
Therefore, the sealing resin (5) is applied to the sides (5) of the border frame.
In addition to the part that becomes one side (5c) of b) and -, the part that receives the most weight of the filled casting resin (7) (Fig. 7), that is, the part that becomes the lower side (5a) of the border frame However, since it can sufficiently withstand the weight of the casting resin (7) (Fig. 7), it will not peel off from the front face panel (2) or the protective glass (3).

したがって、注型樹脂(7)(第7図)の樹脂洩れが防
止されるので、不良陰極線管の発生率が大幅に低減され
て、生産性が向上する。
Therefore, since resin leakage of the casting resin (7) (FIG. 7) is prevented, the incidence of defective cathode ray tubes is significantly reduced, and productivity is improved.

実験の結果、注型樹脂(7)(第7図)を充填する際、
第4図に示すように、ふちとり枠であるシール樹脂(5
)の厚さTに対する幅Wの比率W/Tが2未満である部
分では、注型樹脂(7)(第7図)の樹脂洩れ発生率が
高く、比率W/Tが2以−1−である部分では、樹脂洩
れ発生率が極めて低いことがわかっている。つまり、比
率W/Tが2以」−であれば、シール樹脂(5)は、充
填された注型樹脂(7)(第7図)の重量に十分に耐え
て剥離を生じない。
As a result of the experiment, when filling the casting resin (7) (Fig. 7),
As shown in Figure 4, the sealing resin (5
) where the ratio W/T of the width W to the thickness T is less than 2, the resin leakage rate of the casting resin (7) (Fig. 7) is high, and the ratio W/T is 2 or more -1- It is known that the incidence of resin leakage is extremely low in certain areas. In other words, if the ratio W/T is 2 or more, the sealing resin (5) can sufficiently withstand the weight of the filled casting resin (7) (FIG. 7) and will not peel off.

ここで、図からもわかるように、比率W/Tの値を必要
以上に大きく設定することは、樹脂洩れ防止硬化の点か
ら見ても無意味なことであり、比率W/Tは、シール樹
脂(5)が、ふちとり枠として適切な幅Wを有するよう
な、値にとどめるのが望ましい。
As can be seen from the figure, it is meaningless to set the ratio W/T larger than necessary, even from the point of view of curing to prevent resin leakage, and the ratio W/T is It is desirable to keep the width W to such a value that the resin (5) has an appropriate width W as a border frame.

従来の保護ガラス接着形陰極線管において、第7図のシ
ール樹脂(5)は、ふちどり枠の下辺(5a)となる部
分の厚さTが、第3図の曲線Aで示すように、上記実施
例と同様であっても、幅Wが上記実施例とは異なり、第
3図の直線Cで示すように、一定であり10mmに設定
されていた。調査の結果、従来の保護ガラス接着形陰極
線管におけるシール樹脂(5)は、全周にわたって幅W
が10mmに設定されており、隔離しやすい部分の比率
W/Tが2未満であった。
In the conventional protective glass adhesive type cathode ray tube, the sealing resin (5) shown in FIG. Although it is similar to the example, the width W is different from the above example and is constant and set to 10 mm, as shown by the straight line C in FIG. As a result of the investigation, it was found that the sealing resin (5) in the conventional protective glass-adhesive cathode ray tube has a width W over the entire circumference.
was set to 10 mm, and the ratio W/T of the easily isolated portion was less than 2.

なお、上記実施例では、ふちとり枠となるシール樹脂(
5)として、紫外線硬化タイプのアクリルを用いたが、
この発明はこれに限られるものではない。シール樹脂(
5)としては、紫外線硬化タイプのシリコン、紫外線硬
化タイプのポリエステル、熱硬化タイプのポリエステル
、熱硬化タイプのシリコンなどを用いても上記実施例と
同様の昂斐を奏する。
In addition, in the above embodiment, the sealing resin (
As for 5), ultraviolet curing type acrylic was used,
This invention is not limited to this. Seal resin (
As for 5), even if ultraviolet curing type silicone, ultraviolet curing type polyester, thermosetting type polyester, thermosetting type silicone, etc. are used, the same effect as in the above embodiment can be obtained.

[発明の効果コ 以上のようにこの発明によれば、注型樹脂の洩れが防止
されるので、保護ガラス接着形陰極線管の良品率が大幅
に向上して生産性が向」ニする。
[Effects of the Invention] As described above, according to the present invention, since leakage of the casting resin is prevented, the yield rate of protective glass-bonded cathode ray tubes is greatly improved, and productivity is improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例による保護ガラス接着形陰
極線管の側面図、第2図は第1図の平面図、第3図はシ
ール樹脂のふちどり枠の下辺となる部分の厚さおよび幅
の分布を示す図、第4図はシール樹脂の厚さに対する幅
の比率と樹脂洩れ発生率との関係を示す特性図、第5図
〜第8図は保護ガラス接着形陰極線管の製造工程を示す
図である。 (2)・・・フェースパネル前面、(3)・・・保護ガ
ラス、(5)・・・シール樹脂、(7)・・・注型樹脂
。 なお、図中、同一符号は同一または相当部分を示す。
FIG. 1 is a side view of a protective glass adhesive type cathode ray tube according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. A diagram showing the width distribution, Figure 4 is a characteristic diagram showing the relationship between the ratio of the width to the thickness of the sealing resin and the rate of resin leakage, and Figures 5 to 8 are the manufacturing process of the protective glass adhesive type cathode ray tube. FIG. (2)...front of face panel, (3)...protective glass, (5)...sealing resin, (7)...casting resin. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] (1)保護ガラスの周縁にシール樹脂を塗布し、上記保
護ガラスをフェースパネル前面に所定の空隙を隔てて対
面させた状態で上記シール樹脂を硬化させて、上記保護
ガラスとフェースパネル前面とを接着固定するとともに
、硬化したシール樹脂により上記保護ガラスとフェース
パネル前面との周縁の一部分に注入口を残して上記空隙
を封止するふちどり枠を形成し、このふちどり枠で囲わ
れた空隙内に上記注入口から注型樹脂を注入し、硬化さ
せて上記保護ガラスを上記フェースパネル前面に接着し
てなる保護ガラス接着形陰極線管において、上記ふちど
り枠であるシール樹脂は、全周にわたつて厚さに対する
幅の比率が2以上であることを特徴とする保護ガラス接
着形陰極線管。
(1) Apply a sealing resin to the periphery of the protective glass, harden the sealing resin with the protective glass facing the front of the face panel with a predetermined gap in between, and seal the protective glass and the front of the face panel. At the same time, a border frame is formed to seal the gap by leaving an injection port at a portion of the periphery of the protective glass and the front surface of the face panel using a hardened sealing resin, and a border is formed in the space surrounded by the border frame. In a protective glass-adhered cathode ray tube in which a casting resin is injected through the injection port and cured to adhere the protective glass to the front surface of the face panel, the sealing resin forming the border frame is thick over the entire circumference. A protective glass adhesive type cathode ray tube characterized in that the ratio of width to width is 2 or more.
JP25903886A 1986-10-29 1986-10-29 Cover glass adhesion type cathode-ray tube Pending JPS63114034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25903886A JPS63114034A (en) 1986-10-29 1986-10-29 Cover glass adhesion type cathode-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25903886A JPS63114034A (en) 1986-10-29 1986-10-29 Cover glass adhesion type cathode-ray tube

Publications (1)

Publication Number Publication Date
JPS63114034A true JPS63114034A (en) 1988-05-18

Family

ID=17328469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25903886A Pending JPS63114034A (en) 1986-10-29 1986-10-29 Cover glass adhesion type cathode-ray tube

Country Status (1)

Country Link
JP (1) JPS63114034A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4411149Y1 (en) * 1965-07-06 1969-05-08
JPS60130029A (en) * 1983-12-16 1985-07-11 Mitsubishi Electric Corp Manufacture of front glass adhesion type cathode-ray tube

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4411149Y1 (en) * 1965-07-06 1969-05-08
JPS60130029A (en) * 1983-12-16 1985-07-11 Mitsubishi Electric Corp Manufacture of front glass adhesion type cathode-ray tube

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