JPH0537028A - Led emission and display device - Google Patents

Led emission and display device

Info

Publication number
JPH0537028A
JPH0537028A JP3215967A JP21596791A JPH0537028A JP H0537028 A JPH0537028 A JP H0537028A JP 3215967 A JP3215967 A JP 3215967A JP 21596791 A JP21596791 A JP 21596791A JP H0537028 A JPH0537028 A JP H0537028A
Authority
JP
Japan
Prior art keywords
segment
emitting display
outer case
led
led light
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
JP3215967A
Other languages
Japanese (ja)
Inventor
Yasuo Yoshioka
靖雄 吉岡
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP3215967A priority Critical patent/JPH0537028A/en
Publication of JPH0537028A publication Critical patent/JPH0537028A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00Illuminated signs; Luminous advertising
    • G09F13/20Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched

Abstract

PURPOSE:To provide a LED emission and display device which can be made light-weighted and thin-typed while being allowed to display large characters. CONSTITUTION:This device is constituted of an outside case 10 having a segment hole 11e, a segment light transmission body 30 installed in the segment hole 11e and a substrate 40 on which LED elements 20 are mounted. The outside case 10 and the segment light transmission body 30 are formed simultaneously from the same synthetic resin by the two-color molding method. The segment light transmission body 30 is thick at the central part and thin at the outside part.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、LED発光表示素子、
特に測定装置の表示部や、高速道路等における速度表示
等の各種データの表示、メッセージボード等のように、
見る者との距離が大きい場合に有効なLED発光表示素
子に関する。
BACKGROUND OF THE INVENTION The present invention relates to an LED light emitting display device,
In particular, such as the display of the measuring device, display of various data such as speed display on highways, message boards, etc.
The present invention relates to an LED light emitting display element that is effective when the distance to the viewer is large.

【0002】[0002]

【従来の技術】以下、LED発光表示素子の例として数
字を表示するいわゆる7セグメントのLED発光表示素
子を挙げ、図5及び図6を参照しつつ説明する。かかる
LED発光表示素子は、7つのセグメント孔11が8字形
状に形成された外形ケース10と、LEDチップ70がワイ
ヤボンディングされた基板40とを有し、前記セグメント
孔11内には透光性を有する合成樹脂60(例えば、エポキ
シ系樹脂)が充填されることによって構成されている。
基板40は、ボンディングされたLEDチップ70が各セグ
メント孔11内に収まるように、外形ケース10に背面側か
ら嵌め合わせられる。また、セグメント孔11には裏面側
から合成樹脂60が充填されるが、この充填の際には合成
樹脂60がセグメント孔11の外に漏出しないように、当該
セグメント孔11はマスキングシートによって表側から封
止されている。
2. Description of the Related Art A so-called 7-segment LED light emitting display element for displaying numbers will be described below as an example of the LED light emitting display element, and will be described with reference to FIGS. Such an LED light emitting display element has an outer case 10 in which seven segment holes 11 are formed in an 8-shape, and a substrate 40 to which an LED chip 70 is wire-bonded. It is configured by filling a synthetic resin 60 (for example, an epoxy resin) having
The substrate 40 is fitted to the outer case 10 from the back side so that the bonded LED chips 70 fit in the respective segment holes 11. Further, the segment hole 11 is filled with the synthetic resin 60 from the back surface side, but at the time of this filling, the segment hole 11 is covered with a masking sheet from the front side so that the synthetic resin 60 does not leak out of the segment hole 11. It is sealed.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上述し
た従来のLED発光表示素子には以下のような問題点が
ある。すなわち、大型の文字を表示するLED発光表示
素子の外形ケースのセグメント孔は必然的に大きくなる
ため、このセグメント孔に充填される合成樹脂の量も多
くなる。このため、大型の文字を表示するLED発光表
示素子は重くなる。また、LED発光表示素子の完成後
には不要になるマスキングシートも多量に必要となる。
さらに、セグメント孔に充填される合成樹脂が硬化する
際にゴミの混入、気泡の発生或いは樹脂漏れ等が生じ易
くなり、歩留りを低下させることがある。また、ゴミの
混入した場合の修正も不可能である。
However, the above-mentioned conventional LED light emitting display device has the following problems. That is, since the segment hole of the outer case of the LED light emitting display element that displays a large character is inevitably large, the amount of synthetic resin filled in the segment hole also increases. Therefore, the LED light emitting display element for displaying large characters becomes heavy. In addition, a large amount of masking sheets, which are unnecessary after the completion of the LED light emitting display element, is required.
Further, when the synthetic resin filled in the segment holes is hardened, dust is likely to be mixed in, bubbles are generated, resin leaks or the like are likely to occur, which may reduce the yield. In addition, it is impossible to correct when dust is mixed.

【0004】また、セグメント孔全体に合成樹脂が充填
されるため、LEDチップからの光が前記合成樹脂によ
って拡散されすぎて、結果として発光光度が低下し、セ
グメント孔全体の光度が不均一になることがある。
Further, since the entire segment hole is filled with the synthetic resin, the light from the LED chip is excessively diffused by the synthetic resin, and as a result, the luminous intensity is reduced and the luminous intensity of the entire segment hole becomes uneven. Sometimes.

【0005】さらに、エポキシ系樹脂の膨張係数(7×
10-5/℃)と、外形ケース10に用いられる樹脂の膨張係
数(2〜6×10-5/℃)との違いに起因する硬化収縮
も、薄型化の阻害要因になっている。また、LEDチッ
プが透光性を有する合成樹脂でモールドされたいわゆる
LEDランプは、セグメント孔に充填される合成樹脂と
の密着性に問題があるため使用できなかった。
Further, the expansion coefficient of the epoxy resin (7 ×
And 10 -5 / ℃), also differences due to the cure shrinkage of the expansion coefficient of the resin used for the outer casing 10 (2~6 × 10 -5 / ℃ ), have become impediments thinner. Further, a so-called LED lamp in which an LED chip is molded with a synthetic resin having a light-transmitting property cannot be used because there is a problem in adhesion to the synthetic resin filled in the segment holes.

【0006】本発明は上記事情に鑑みて創案されたもの
で、大型の文字を表示するLED発光表示素子であって
も、軽量化、薄型化が可能で、かつ上述したような問題
点のないLED発光表示素子を提供することを目的とし
ている。
The present invention was devised in view of the above circumstances, and even an LED light emitting display element for displaying a large character can be reduced in weight and thickness and does not have the above-mentioned problems. It is intended to provide an LED light emitting display device.

【0007】[0007]

【課題を解決するための手段】本発明に係るLED発光
表示素子は、セグメント孔が形成された外形ケース及び
前記セグメント孔に設けられるセグメント部透光体と、
LED素子が実装された基板とからなり、前記外形ケー
スとセグメント透光体とは2色成形法で同一の合成樹脂
でで同時に成形されており、前記セグメント透光体は中
心部は厚く、周縁部は薄く形成されている。
An LED light-emitting display device according to the present invention comprises an outer case having a segment hole formed therein and a segment portion light-transmitting body provided in the segment hole.
The outer case and the segment translucent body are simultaneously molded of the same synthetic resin by a two-color molding method, and the segment translucent body has a thick central portion and a peripheral edge. The part is thinly formed.

【0008】[0008]

【実施例】図1は本発明の一実施例に係るLED発光表
示素子の断面図であり、図3におけるA−A線断面図、
図2は図3におけるB−B線断面図、図3は本発明の一
実施例に係るLED発光表示素子の平面図、図4はセグ
メント透光体のみの斜視図である。
1 is a sectional view of an LED light emitting display device according to an embodiment of the present invention, which is a sectional view taken along line AA in FIG.
2 is a sectional view taken along line BB in FIG. 3, FIG. 3 is a plan view of an LED light emitting display device according to an embodiment of the present invention, and FIG. 4 is a perspective view of only a segment translucent body.

【0009】本実施例に係るLED発光表示素子は、7
つのセグメント孔11a 〜11g が形成された外形ケース10
及び前記セグメント孔11a 〜11g に設けられるセグメン
ト透光体30と、LED素子20が実装されており、前記外
形ケース10に取り付けられる基板40とを備えており、前
記外形ケース10とセグメント透光体30とは2色成形法で
同一の合成樹脂で同時に成形されており、前記セグメン
ト透光体30は中心部は厚く、周縁部は薄く形成されてい
る。
The LED light-emitting display device according to this embodiment is 7
Outer case 10 with two segment holes 11a-11g
And a segment translucent body 30 provided in the segment holes 11a to 11g, and an LED element 20 mounted thereon, and a substrate 40 attached to the outer case 10, and the outer case 10 and the segment translucent body. 30 is simultaneously molded with the same synthetic resin by a two-color molding method, and the segment light-transmitting body 30 has a thick central portion and a thin peripheral portion.

【0010】セグメント孔11a 〜11g が形成された外形
ケース10と、前記セグメント孔11a〜11g に設けられる
セグメント透光体30とは、合成樹脂により一体に成形さ
れるものである。ここで、外形ケース10は、透光性を有
する合成樹脂、例えばポリカーボネイト或いはアクリル
等に白色の着色剤が混入されたもので成形されている。
白色の着色剤を混入するのは、光の反射効率を向上させ
るためである。一方、セグメント透光体30は、ポリカー
ボネイト等の合成樹脂に均一な発光のために微細なガラ
スビーズ等の光散乱剤を混入したもので成形されてい
る。
The outer case 10 having the segment holes 11a to 11g formed therein and the segment translucent body 30 provided in the segment holes 11a to 11g are integrally molded of synthetic resin. Here, the outer case 10 is formed of a translucent synthetic resin, for example, polycarbonate, acrylic, or the like mixed with a white colorant.
The white colorant is mixed in to improve the light reflection efficiency. On the other hand, the segment translucent body 30 is formed by mixing a synthetic resin such as polycarbonate with a light scattering agent such as fine glass beads for uniform light emission.

【0011】セグメント孔11a 〜11g は、外形ケース10
の表面から裏面にかけて貫通して8字形状を構成してお
り、数字を表示できるようになっている。また、外形ケ
ース10の左下隅部には、小数点を表示するための小孔12
が形成されている。
The segment holes 11a to 11g are provided in the outer case 10
The figure has a figure-eight shape that penetrates from the front surface to the back surface so that numbers can be displayed. Also, in the lower left corner of the outer case 10, there is a small hole 12 for displaying the decimal point.
Are formed.

【0012】また、セグメント孔11a 〜11g に設けられ
るセグメント透光体30は、図4に示すように、中心部が
厚くかつ周縁部が薄くなるように形成されている。すな
わち、当該セグメント透光体30は、略かまぼこ状に成形
されているのである。
Further, as shown in FIG. 4, the segment light-transmitting body 30 provided in the segment holes 11a to 11g is formed so that the central portion is thick and the peripheral portion is thin. That is, the segment translucent body 30 is formed into a substantially semicylindrical shape.

【0013】一方、LED素子20としては、通常のLE
Dランプが用いられる。かかるLED素子20は、基板40
を外形ケース10に取り付けた場合に、前記セグメント孔
11a〜11g の長手方向の中心線上に位置すべく基板40に
実装されている。なお、図面中41は、LED素子20に対
して接続された端子を示している。
On the other hand, as the LED element 20, an ordinary LE is used.
A D lamp is used. The LED element 20 includes a substrate 40
When attached to the outer case 10,
It is mounted on the substrate 40 so as to be located on the longitudinal center line of 11a to 11g. Incidentally, reference numeral 41 in the drawing denotes a terminal connected to the LED element 20.

【0014】外形ケース10には、基板40が裏面側から取
り付けられる。従って、LED素子20とセグメント透光
体30との間には、空間Aが形成されることになる。な
お、基板40を外形ケース10に取り付ける手法としては種
々のものが考えられるが、例えばシリコン樹脂を基板40
と外形ケース10との隙間に充填する手法、或いは外形ケ
ース10に基板固定用ピンを形成し、当該基板固定用ピン
を基板40の貫通孔に溶着する手法等がある。
A substrate 40 is attached to the outer case 10 from the back side. Therefore, a space A is formed between the LED element 20 and the segment translucent body 30. Various methods can be considered for attaching the substrate 40 to the outer case 10. For example, silicon resin is used as the substrate 40.
There is a method of filling a gap between the outer case 10 and the outer case 10, or a method of forming a board fixing pin in the outer case 10 and welding the board fixing pin to a through hole of the board 40.

【0015】なお、上述した実施例では、数字を表示す
るいわゆる7セグメント型のLED発光表示素子を挙げ
て説明したが、本発明がこれに限定されるわけではな
く、他のタイプのLED発光表示素子であっても良いこ
とは勿論である。また、LED素子20としてLEDラン
プを挙げて説明したが、従来のように基板40にワイヤボ
ンディングで接続されるLEDチップであってもよい。
In the above-mentioned embodiment, the so-called 7-segment type LED light emitting display element for displaying numbers has been described, but the present invention is not limited to this, and other types of LED light emitting display. Of course, it may be an element. Although the LED lamp has been described as the LED element 20, the LED chip may be connected to the substrate 40 by wire bonding as in the conventional case.

【0016】[0016]

【発明の効果】本発明に係るLED発光表示素子は、セ
グメント孔が形成された外形ケース及び前記セグメント
孔に設けられるセグメント部透光体と、LED素子が実
装された基板とからなり、前記外形ケースとセグメント
透光体とは2色成形法で同一の合成樹脂でで同時に成形
されており、前記セグメント透光体は中心部は厚く、周
縁部は薄く形成されている。従って、従来のようにセグ
メント孔内の全域にわたって合成樹脂を充填する必要が
ないので、LED発光表示素子をより軽量、かつ薄型に
構成することができる。特に、大型のLED発光表示素
子にあっては、50%程度の軽量化も可能である。また、
セグメント透光体は外形ケースと同時に成形されるの
で、従来のようなゴミの混入等による修正不可能、歩留
りの低下という問題は生じない。
The LED light emitting display device according to the present invention comprises an outer case having segment holes, a segment light-transmitting body provided in the segment holes, and a substrate on which the LED elements are mounted. The case and the segment light-transmitting body are simultaneously molded with the same synthetic resin by a two-color molding method, and the segment light-transmitting body has a thick central portion and a thin peripheral portion. Therefore, it is not necessary to fill the entire area of the segment hole with the synthetic resin as in the conventional case, so that the LED light emitting display element can be made lighter and thinner. In particular, in the case of a large LED light emitting display element, it is possible to reduce the weight by about 50%. Also,
Since the segment light-transmitting body is molded at the same time as the outer case, there is no problem of being uncorrectable due to mixing of dust or the like and the reduction in yield as in the conventional case.

【0017】さらに、セグメント透光体の中心部は厚
く、かつ周縁部は薄く形成されているため、LED素子
からの光はセグメント孔の中心部に集中する。その結
果、発光光度が向上するとともに、セグメント孔全体の
発光光度の均一化を図ることができる。また、外形ケー
スとセグメント透光体とは同一の合成樹脂によって成形
されているため、両者の膨張係数の違いに起因する小型
化、薄型化の困難性をも克服している。
Further, since the central portion of the segment translucent body is formed thick and the peripheral portion thereof is formed thin, the light from the LED element is concentrated on the central portion of the segment hole. As a result, the luminous intensity is improved and the luminous intensity of the entire segment hole can be made uniform. Further, since the outer case and the segment translucent body are molded from the same synthetic resin, the difficulty of miniaturization and thinning due to the difference in expansion coefficient between the two is overcome.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例に係るLED発光表示素子の
断面図であり、図3におけるA−A線断面図である。
1 is a cross-sectional view of an LED light-emitting display device according to an embodiment of the present invention, which is a cross-sectional view taken along the line AA in FIG.

【図2】図3におけるB−B線断面図である。FIG. 2 is a sectional view taken along line BB in FIG.

【図3】本発明の一実施例に係るLED発光表示素子の
平面図である。
FIG. 3 is a plan view of an LED light emitting display device according to an embodiment of the present invention.

【図4】セグメント透光体のみの斜視図である。FIG. 4 is a perspective view of only a segment translucent body.

【図5】従来のLED発光表示素子の断面図である。FIG. 5 is a cross-sectional view of a conventional LED light emitting display device.

【図6】従来のLED発光表示素子の断面図である。FIG. 6 is a cross-sectional view of a conventional LED light emitting display device.

【符号の説明】[Explanation of symbols]

10 外形ケース 11a 〜11g セグメント孔 20 LED素子 30 セグメント透光体 10 Outer case 11a ~ 11g Segment hole 20 LED element 30-segment translucent body

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 セグメント孔が形成された外形ケース及
び前記セグメント孔に設けられるセグメント部透光体
と、LED素子が実装された基板とからなり、前記外形
ケースとセグメント透光体とは2色成形法で同時に成形
されたことを特徴とするLED発光表示素子。
1. An outer case having a segment hole formed therein, a segment light-transmitting body provided in the segment hole, and a substrate on which an LED element is mounted. The outer case and the segment light-transmitting body are of two colors. An LED light-emitting display element, which is simultaneously molded by a molding method.
【請求項2】 前記セグメント透光体は中心部は厚く、
周縁部は薄く形成されていることを特徴とする請求項1
記載のLED発光表示素子。
2. The segment light-transmitting body has a thick central portion,
The peripheral portion is thinly formed.
The LED light emitting display element described.
【請求項3】 前記外形ケースとセグメント透光体とは
同一の合成樹脂で成形されていることを特徴とする請求
項1及び2記載のLED発光表示素子。
3. The LED light emitting display device according to claim 1, wherein the outer case and the segment translucent body are formed of the same synthetic resin.
JP3215967A 1991-07-31 1991-07-31 Led emission and display device Pending JPH0537028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3215967A JPH0537028A (en) 1991-07-31 1991-07-31 Led emission and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3215967A JPH0537028A (en) 1991-07-31 1991-07-31 Led emission and display device

Publications (1)

Publication Number Publication Date
JPH0537028A true JPH0537028A (en) 1993-02-12

Family

ID=16681207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3215967A Pending JPH0537028A (en) 1991-07-31 1991-07-31 Led emission and display device

Country Status (1)

Country Link
JP (1) JPH0537028A (en)

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Publication number Priority date Publication date Assignee Title
KR20020079087A (en) * 2001-04-13 2002-10-19 주식회사한영전자 Led protective structure of display light
KR20040013221A (en) * 2002-08-05 2004-02-14 주식회사 래도 Segment display structure
JP2007059489A (en) * 2005-08-22 2007-03-08 Asahi Rubber:Kk Lens
WO2010095863A3 (en) * 2009-02-18 2010-11-18 Heo Jae Yong Led with an adsorption plate
WO2010093188A3 (en) * 2009-02-11 2010-11-18 Heo Jae Yong Led assembly with improved visibility and shapability, attaching method of the same, and banner using the same
WO2012007392A1 (en) * 2010-07-15 2012-01-19 Osram Opto Semiconductors Gmbh Radiation-emitting component
KR101157800B1 (en) * 2009-03-31 2012-06-19 광성기업 주식회사 Traffic safety board having improved visibility and easy installation
JP2013183778A (en) * 2012-03-06 2013-09-19 Fujishoji Co Ltd Game machine
JP2014518437A (en) * 2011-06-28 2014-07-28 フレクストロニクス オートモーティブ ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト LED lamp
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020079087A (en) * 2001-04-13 2002-10-19 주식회사한영전자 Led protective structure of display light
KR20040013221A (en) * 2002-08-05 2004-02-14 주식회사 래도 Segment display structure
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