JP2865393B2 - Light reflector and surface-emitting display - Google Patents
Light reflector and surface-emitting displayInfo
- Publication number
- JP2865393B2 JP2865393B2 JP2196965A JP19696590A JP2865393B2 JP 2865393 B2 JP2865393 B2 JP 2865393B2 JP 2196965 A JP2196965 A JP 2196965A JP 19696590 A JP19696590 A JP 19696590A JP 2865393 B2 JP2865393 B2 JP 2865393B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- transparent
- reflecting material
- signs
- adhesive
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は自動車、原動機付自転車、単車などの自動車
番号標示板（以下番号標示板という）や、案内標識、規
制標識などの道路標識用標示板（以下標識という）、安
全ベストなどの安全衣料などに用いられる光反射材、お
よびこの反射材を用いた面発光表示物に関するものであ
る。The present invention relates to an automobile number sign board (hereinafter referred to as a number sign board) for a car, a motorbike, a motorcycle, and the like, and a sign board for a road sign such as a guide sign and a regulation sign. The present invention relates to a light reflecting material used for safety clothing such as a safety vest and the like, and a surface-emitting display using the reflecting material.
従来の技術 従来、たとえば自動車などの番号標示板は、アルミニ
ウム板や鋼板を型押しして浮き文字とし、前記浮き文字
頂部に着色を施して形成されている。一方反射性の番号
標示板（以下反射番号標示板という）が一部単車や原動
機付自転車で実施されているが、この反射番号標示板
は、アルミニウム板、鋼板、ポリ塩化ビニル鋼板などに
再帰性反射材のうち比較的柔軟性のある封入レンズ型の
ものを貼付し、機械的に浮き文字を形成している。反射
番号標示板は現在多くの国で実施され、交通事故防止や
犯罪防止に大きく貢献している。また、上記以外では番
号標示板として文字部分だけを切抜いて透明板とし、標
示装置の内部の電球により照し出す行灯式とか字光式と
か呼ばれる内部照明式番号標示板が使用されている。ま
た、道路標識では一般的には封入レンズ式反射材、カプ
セルレンズ型反射材が用いられ、任意の図柄を再帰性反
射材表面に印刷または切文字などで表示している。道路
標識の設置規準として路側の規制標識などの設置高さは
1.8m程度であるが、オーバーハング式とかオーバーヘッ
ド方式については5m以上の高さに設置されている。自動
車ヘッドライトが標識類を照射し難い場合は外部照明式
と称し、標識の外部から光を照射している。その他、標
識の視認性をより向上させるため内部照明式標識、内部
照明式反射標識などが使用されている。近年発光ダイオ
ード（以下LEDという）の使用した標示類が使用されて
いて、LEDを図柄の一部または標識類の周辺に多数配列
され、標識類の前方に光を放す方式が採用されている。
上記LEDを使用した標識類のLEDの光線はLEDを点光源と
して文字や図柄の形状に合せて点在させたものである。2. Description of the Related Art Conventionally, for example, a number indicating plate of an automobile or the like is formed by embossing an aluminum plate or a steel plate into a floating character and coloring the top of the floating character. On the other hand, some reflective number signs (hereinafter referred to as “reflective number signs”) have been implemented on motorcycles and motorbikes, but these reflective number signs are recyclable on aluminum plates, steel plates, polyvinyl chloride steel plates, etc. A relatively flexible encapsulating lens type of reflective material is attached to mechanically form a floating character. Reflection number signs are currently being used in many countries and have contributed significantly to preventing traffic accidents and crime. In addition to the above, an internal lighting type numbering plate called a lighting type or a character light type in which only a character portion is cut out to form a transparent plate as a numbering plate and illuminated by a bulb inside the marking device is used. In general, a road sign uses an enclosed lens-type reflector or a capsule lens-type reflector, and an arbitrary design is displayed on the surface of the retroreflective material by printing or cutting letters. The installation height of roadside regulation signs etc.
It is about 1.8m, but for the overhang type or overhead type, it is installed at a height of 5m or more. When it is difficult for a vehicle headlight to illuminate signs, it is called an external illumination type, and light is emitted from outside the sign. In addition, internally illuminated signs, internally illuminated reflective signs, and the like are used to further improve the visibility of the signs. In recent years, signs using light emitting diodes (hereinafter referred to as LEDs) have been used, and a method of arranging a large number of LEDs around a part of a design or around signs and emitting light in front of the signs has been adopted.
The light rays of the LEDs of the signs using the above-mentioned LEDs are those which are scattered in accordance with the shape of characters or patterns using the LED as a point light source.
発明が解決しようとする課題 上記自動車などの番号標示板や道路標識類は前述のよ
うに再帰性反射材が使用され、自動車のヘッドライトが
再帰性反射材を照射したとき、照射方向に正確に光が再
帰反射し、運転車の目に図柄の内容が伝達される。も
し、自動車のへッドライトが下向き、即ち光軸が路面下
部を向いているときは高所や側道にある標識類に到達す
る光の量や角度の関係で非常に見え難いものであり、標
識の内容が伝達されず、事故を招く恐れがある。内部照
明式といわれる標識類は箱体内部に蛍光灯が取り付けら
れ、夜間蛍光灯の光によって乳白板を透過した光により
各種図柄が表面に照し出されるようになっている。しか
し光源が商用電源であることや蛍光灯の故障によるメン
テナンスなどの点でコストが高く付く欠点がある。ま
た、従来から使用されているLEDを点在させた標識類はL
EDが点灯、点滅されたとき図柄の輪郭のみが光の点とし
て見え、遠近感がなく、文字の判読性も劣り、全体的に
は視認性が良くない。その他LEDを細密に並べて光の面
を造ろうと試みられたものは数百個のLEDを使用しコス
トが高く、太陽電池、乾電池の消費電力も大きく、不適
当である。Problems to be Solved by the Invention The number sign boards and road signs of the above-mentioned automobiles and the like use a retroreflective material as described above, and when the headlights of the automobile irradiate the retroreflective material, the irradiation direction is accurately determined. The light is retroreflected, and the contents of the design are transmitted to the eyes of the driving car. If the headlight of the car is facing down, that is, the optical axis is facing the lower part of the road surface, it is very difficult to see because of the amount and angle of light reaching the signs at high places and side roads. May not be transmitted, which may cause an accident. Fluorescent lamps are mounted inside the box for signs called internal lighting type, and various patterns are illuminated on the surface by light transmitted through the milky board by night fluorescent light. However, there is a disadvantage that the cost is high in that the light source is a commercial power supply and maintenance due to a failure of the fluorescent lamp. In addition, conventionally used LEDs that are dotted with LEDs are L
When the ED is turned on and off, only the outline of the pattern is seen as a dot of light, there is no perspective, the legibility of the characters is poor, and the overall visibility is poor. Others that attempt to create a light surface by arranging LEDs in a small array use hundreds of LEDs, are costly, consume large amounts of solar cells and dry cells, and are unsuitable.
本発明はこのような課題を解決するもので、自動車の
番号標示板や道路標識類、安全衣料などの視認性を高
め、安全性を確保すると共に経済効果のある標識、表示
類に最適な光反射材および面発光表示物を提供すること
を目的とするものである。The present invention solves such a problem, and enhances the visibility of automobile number sign boards, road signs, safety clothing, and the like, and secures safety. It is an object to provide a reflective material and a surface-emitting display.
課題を解決するための手段 この課題を解決するために本発明の光反射材は、着色
透明樹脂層に透明樹脂バインダーを介して無数の透明ガ
ラス微小球を単層に設けるとともに、この透明ガラス微
小球の球面の一部を前記透明樹脂バインダーに埋没さ
せ、前記透明ガラス微小球の背面に金属蒸着層を設け、
さらにこの金属蒸着層を接着剤を介して支持体で保護
し、前記着色透明樹脂層の表面に透明性接着剤を設けた
ものである。Means for Solving the Problems In order to solve this problem, the light reflecting material of the present invention provides a single layer of countless transparent glass microspheres via a transparent resin binder on a colored transparent resin layer, A part of the spherical surface of the sphere is buried in the transparent resin binder, and a metal deposition layer is provided on the back surface of the transparent glass microsphere,
Further, the metal vapor-deposited layer is protected by a support via an adhesive, and a transparent adhesive is provided on the surface of the colored transparent resin layer.
また本発明は、周辺部に発光源を組み込んだ透明物体
に上記光反射材を透明性接着剤を介して貼り付けたもの
である。Further, in the present invention, the light reflecting material is attached to a transparent object having a light emitting source incorporated in a peripheral portion thereof through a transparent adhesive.
作用 上記構成において、発反射材が接着剤を介して貼り付
けられた透明物体、即ち面発光表示物の端部周辺からLE
Dなどの発光源の光線を透明板の中央部に向けて照射し
たとき、図柄に使用した光反射材の内部で光の拡散が行
なわれ図柄表面の全体から光が発光された如く見え、明
るく、さながら面発光した如く文字や図柄が鮮明に浮き
上がって見えるのである。さらに文字や図柄の周辺で透
明板に一定角の彫刻溝を作成したものは、光の拡散効果
がさらに向上する。In the above-described structure, the reflective material is attached to the transparent object with an adhesive, that is, the LE from the periphery of the edge of the surface-emitting display object.
When light from a light source such as D is directed toward the center of the transparent plate, light is diffused inside the light reflecting material used for the design, making it appear as if light is emitted from the entire surface of the design, making it brighter. Characters and designs appear to be clearly raised as if they were surface emitting. In the case where the engraved groove having a fixed angle is formed in the transparent plate around the character or the design, the light diffusion effect is further improved.
実施例 以下、本発明の実施例について、図面に基づいて説明
する。第１図は本発明の実施例における光反射材を示し
概略断面図である。Examples Hereinafter, examples of the present invention will be described with reference to the drawings. FIG. 1 is a schematic sectional view showing a light reflecting material according to an embodiment of the present invention.
第１図において、離型性素材１で保護した透明性接着
剤２の下層に隣接して着色透明樹脂層３を設け、この着
色透明樹脂層３に隣接して一列に無数の透明ガラス微小
球４をその球径のほぼ50％が埋没した状態で透明樹脂バ
インダー５によって固着させ、前記透明ガラス微小球４
の背面側に球径のほぼ50％について金属蒸着層６を設け
ている。さらに、上記金属蒸着層６の保護を目的とし
て、接着剤７を介して支持体８を設けて光反射材９を作
成した。In FIG. 1, a colored transparent resin layer 3 is provided adjacent to a lower layer of a transparent adhesive 2 protected by a release material 1, and innumerable transparent glass microspheres are arranged in a row adjacent to the colored transparent resin layer 3. The transparent glass microspheres 4 are fixed by a transparent resin binder 5 in a state where almost 50% of the sphere diameter is buried.
The metal vapor deposition layer 6 is provided on the back side of about 50% of the sphere diameter. Further, for the purpose of protecting the metal vapor-deposited layer 6, a support 8 was provided via an adhesive 7 to form a light reflecting material 9.
上記構成の光反射材９を第２図に示すようにアクリル
板などの透明板10の一方の面に前記離型性素材１をはが
して貼り付け、任意の図柄を作成する。さらに図柄の周
辺部において透明板10に彫刻溝11を設け、この透明板10
の周辺部にLED12を埋め込んで設け面発光表示板13を作
成し、LED12を点灯したところ、透明板10に貼り付け光
反射材９が均一に面発光し、視認性良好な面発光表示板
13が得られた。本光反射材９の光に対するメカニズムを
推考すると、ほぼ次のような形態と考察される。即ち、
第３図に示す矢印の方向に光が進行すると仮定すれば、
従来から道路標識に用いられる再帰性反射材の光の進行
は透明板10を通過し、さらに透明性接着剤２と着色透明
樹脂層３を通過して透明ガラス微小球４に達する。その
光道はQ,O,Q1に示す線を書き、透明ガラス微小球４の持
つ屈折率の関係で光の焦点をガラス微小球４の後方Ｏで
結ぶのである。焦点を結ぶＯの地点に金属蒸着膜Ｐを設
けて光の入射した方向と平行に再帰反射させるのであ
る。これに対し、本発明実施例の光反射材の光道は従来
の光道Q,O,Q1とは異なるのである。本発明実施例におい
て透明ガラス微小球４の持つ屈折率は従来の再帰性反射
材に用いられるものと同屈折率のものを用い、透明ガラ
ス微小球４の背面に直接金属蒸着層６を設け、光の進行
をQ,E,Gの方向に変換したのである。即ち、透明ガラス
微小球４を通過して焦点を結ぶＯの地点に到達する前に
ガラス微小球４の背面を光の反射面としたので、入射光
線Ｑの光道に帰らずの正面方向に光道を変えて光を発す
るのである。このメカニズムを透明板19の周辺部から発
するLED12の光を透明板10の正面に出るよう調整したの
が本光反射材である。As shown in FIG. 2, the light-reflective material 9 having the above configuration is peeled off and pasted on one surface of a transparent plate 10 such as an acrylic plate to form an arbitrary design. Further, engraving grooves 11 are provided in the transparent plate 10 at the periphery of the pattern, and the transparent plate 10
When the LED 12 is turned on, the light reflecting material 9 attached to the transparent plate 10 uniformly emits surface light, and the visibility is good.
13 was obtained. When the mechanism of the light reflecting material 9 with respect to light is inferred, the following forms are considered. That is,
Assuming that light travels in the direction of the arrow shown in FIG.
Conventionally, light traveling from a retroreflective material used for a road sign passes through a transparent plate 10, further passes through a transparent adhesive 2 and a colored transparent resin layer 3, and reaches a transparent glass microsphere 4. The light path draws the lines Q, O, and Q 1 , and focuses light on the rear O of the glass microsphere 4 due to the refractive index of the transparent glass microsphere 4. The metal deposition film P is provided at the point O where the focal point is formed, and the light is retroreflected in parallel with the direction in which the light is incident. In contrast, the optical path of the light reflecting material of the present invention embodiment is different from the conventional optical path Q, O, and Q 1. In the embodiment of the present invention, the refractive index of the transparent glass microspheres 4 is the same as that used for the conventional retroreflective material, and the metal vapor deposition layer 6 is provided directly on the back surface of the transparent glass microspheres 4. The light travel was converted to Q, E, and G directions. That is, before reaching the point O where the light beam passes through the transparent glass microspheres 4 and reaches the focal point, the back surface of the glass microspheres 4 is used as a light reflecting surface. It changes light path and emits light. It is the present light reflector that adjusts this mechanism so that the light of the LED 12 emitted from the periphery of the transparent plate 19 exits the front of the transparent plate 10.
第５図にの場合の光の進行を記すと、光反射材の表面
に位置する透明板10の側面より入射された光は、透明板
10の屈折率と空気の屈折率の差が大きいため、透明板10
の中を全反射して進行する。ところが接着材を介して光
反射材が存在するところでは、透明板と接着剤の屈折率
差が小さいかあるいはほぼ等しいため、光は光反射材側
に入射し、A,B,Cといった光路で外部に反射し、視認性
が生ずる。これに対して従来の再帰性反射材（ガラス微
小球の背後に焦点樹脂層を設けて反射層を形成した場
合）を同様に使用した場合、光はA,D,Fの光路をとり、
外部にはほとんど出ないのである。The light traveling in the case of FIG. 5 is described as follows. Light incident from the side surface of the transparent plate 10 located on the surface of the light reflecting material is
Because the difference between the refractive index of 10 and the refractive index of air is large, the transparent plate 10
It progresses with total internal reflection. However, where the light-reflecting material is present via the adhesive, the difference in the refractive index between the transparent plate and the adhesive is small or almost equal, so that light enters the light-reflecting material side and travels through the optical paths A, B, and C. Reflection to the outside causes visibility. On the other hand, when a conventional retroreflective material (when a reflective layer is formed by providing a focal resin layer behind glass microspheres) is used in the same manner, light takes the optical paths of A, D, and F,
Almost no outside.
次に上記の面発光表示板13を用いて第４図に示すよう
に、光反射材９が基体14表面の再帰性反射材15に対向す
るように密封材16で周囲を囲み、定着板17に支持して反
射式面発光標識板18を作成し、LED12を点灯したとこ
ろ、標識板18表面の図柄が鮮明に浮き出して見え、視認
性良好であった。また、LED12を消して自動車のヘッド
ライトで照射したところ、基体14に取り付けた再帰性反
射材15が再帰反射し、図柄に用いた光反射材９の無反射
状態とのコントラストがくっきりと浮き出し、図柄は良
好な視認性を示した。本反射式面発光標識板18のLED12
を商用電源もしくは太陽電池に接続し、夜間時点灯昼間
消灯にセットし、点滅のサイクルを調整して視認性を見
たところ、良好であり交通安全に寄与することが判っ
た。Next, as shown in FIG. 4, the surface reflecting panel 9 is surrounded by a sealing member 16 so that the light reflecting member 9 faces the retroreflecting member 15 on the surface of the base 14, and the fixing plate 17 is used. When the LED 12 was turned on, the pattern on the surface of the sign plate 18 was clearly visible and appeared, and the visibility was good. Further, when the LED 12 was turned off and the light was irradiated with the headlights of the car, the retroreflective material 15 attached to the base 14 was retroreflected, and the contrast with the non-reflective state of the light reflective material 9 used for the pattern clearly emerged, The design showed good visibility. LED12 of this reflective surface emitting signboard 18
Was connected to a commercial power source or a solar battery, and was set to be lit at night and turned off during the day, and the blinking cycle was adjusted to see the visibility. As a result, it was found to be good and contributed to traffic safety.
なお、上記実施例において光反射材９をアクリル板な
どの透明板10に貼り付けているが、透明なフィルムに貼
り付けても良い。In the above embodiment, the light reflecting material 9 is attached to a transparent plate 10 such as an acrylic plate, but may be attached to a transparent film.
発明の効果 以上のように本発明によれば、上記光反射材を用いて
面発光表示物を作成し、さらに面発光表示物を用いて反
射式面発光標識板を作成したところ、従来から使用され
ているLEDの点光源点滅方式に比べ、図柄や文字が面と
して発光し、視認効果が非常に高く、さらに透明物体に
溝を彫刻すれば光拡散効果がさらに向上する。また、LE
Dなどの発光源の数が従来のものに比べ非常に少なくて
も優れた視認効果が得られ、太陽電池、商用電源、乾電
池を使用した場合の電力消費量が非常に少なくなるとい
う利点がある。さらに上記光反射材は各種道路標識、番
号標示板、安全衣料、その他広汎な用途に用いることが
でき、交通安全、商業宣伝などにも大きく寄与するもの
である。Effects of the Invention As described above, according to the present invention, a surface-emitting display object is created using the light-reflecting material, and a reflection-type surface-emitting signboard is created using the surface-emitting display object. Compared to the LED point light blinking method, the pattern or character emits light as a surface, the visual effect is very high, and if a groove is engraved on a transparent object, the light diffusion effect is further improved. Also LE
Even if the number of light sources such as D is very small compared to conventional ones, an excellent visual effect can be obtained, and there is an advantage that the power consumption when using solar cells, commercial power supplies, and dry cells is very small. . Further, the light reflecting material can be used for various road signs, number sign boards, safety clothing, and other various uses, and greatly contributes to traffic safety, commercial advertising, and the like.
第１図〜第５図は本発明の実施例を示すもので、第１図
は光反射材の断面図、第２図は光反射材を透明板に取り
付け面発光表示板とした概略断面図、第３図は透明板の
表側から入射した光の反射状態を示す説明図、第４図は
反射式面発光標識板の概略断面図、第５図は透明板の側
方から入射した光の反射状態を示す説明図である。 １……離型性素材、２……透明性接着剤、３……着色透
明樹脂層、４……透明ガラス微小球、５……透明樹脂バ
インダー、６……金属蒸着層、７……接着剤、８……支
持体、９……光反射材、10……透明板、11……彫刻溝、
12……LED、13……面発光表示板、18……反射式面発光
標識板。1 to 5 show an embodiment of the present invention. FIG. 1 is a cross-sectional view of a light reflecting material, and FIG. 2 is a schematic cross-sectional view in which the light reflecting material is mounted on a transparent plate and a surface light emitting display panel is used. FIG. 3 is an explanatory view showing a reflection state of light incident from the front side of the transparent plate, FIG. 4 is a schematic cross-sectional view of a reflection type surface emitting marker plate, and FIG. It is explanatory drawing which shows a reflection state. DESCRIPTION OF SYMBOLS 1 ... Release material, 2 ... Transparent adhesive, 3 ... Colored transparent resin layer, 4 ... Transparent glass microsphere, 5 ... Transparent resin binder, 6 ... Metal deposition layer, 7 ... Adhesion Agent, 8 support, 9 light reflecting material, 10 transparent plate, 11 engraved groove,
12 ... LED, 13 ... Surface emitting display board, 18 ... Reflective surface emitting sign board.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 和田 誠示 滋賀県大津市瀬田橋本町103―40 (56)参考文献 実開 昭49−92194（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) G02B 5/12 - 5/136──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Seiji Wada 103-40, Setabashi-Honcho, Otsu-shi, Shiga Prefecture (56) References Japanese Utility Model Shokai 49-92194 (JP, U) (58) Field surveyed (Int. Cl. 6 , DB name) G02B 5/12-5/136
Claims (2)
して無数の透明ガラス微小球を単層に設けるとともに、
この透明ガラス微小球の球面の一部を前記透明樹脂バイ
ンダーに埋没させ、前記透明ガラス微小球の背面に金属
蒸着層を設け、さらにこの金属蒸着層を接着剤を介して
支持体で保護し、前記着色透明樹脂層の表面に透明性接
着剤を設けた光反射材。Claims: 1. An innumerable transparent glass microsphere is provided in a single layer on a colored transparent resin layer via a transparent resin binder.
A part of the spherical surface of the transparent glass microspheres is buried in the transparent resin binder, a metal deposition layer is provided on the back of the transparent glass microspheres, and the metal deposition layer is further protected by a support via an adhesive, A light reflecting material comprising a transparent adhesive provided on the surface of the colored transparent resin layer.
求項１記載の光反射材を透明性接着剤を介して貼り付け
た面発光表示物。2. A surface-emitting display material comprising a light-reflecting material according to claim 1 attached to a transparent object having a light-emitting source incorporated in a peripheral portion thereof through a transparent adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196965A JP2865393B2 (en) | 1990-07-25 | 1990-07-25 | Light reflector and surface-emitting display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196965A JP2865393B2 (en) | 1990-07-25 | 1990-07-25 | Light reflector and surface-emitting display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0481803A JPH0481803A (en) | 1992-03-16 |
| JP2865393B2 true JP2865393B2 (en) | 1999-03-08 |
Family
ID=16366595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2196965A Expired - Fee Related JP2865393B2 (en) | 1990-07-25 | 1990-07-25 | Light reflector and surface-emitting display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2865393B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000046046A1 (en) | 1999-02-08 | 2000-08-10 | Kayaba Kogyo Kabushiki Kaisha | Caster |
| CN201698041U (en) * | 2010-01-12 | 2011-01-05 | 许清华 | Structure of reflecting material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4992194U (en) * | 1972-12-01 | 1974-08-09 | ||
| JPS52106295A (en) * | 1976-03-04 | 1977-09-06 | Komineootosentaa Kk | Reflector and method of producing same |
| JPS5778502A (en) * | 1980-11-04 | 1982-05-17 | Teizo Izumitani | Transfer type retroreflective object consisting of transparent sphere having vacuum deposited metallic thin film |
| US4682852A (en) * | 1984-07-23 | 1987-07-28 | Victor Weber | Reflective sheeting technology |
| JPH0544865Y2 (en) * | 1987-07-22 | 1993-11-15 |
-
1990
- 1990-07-25 JP JP2196965A patent/JP2865393B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0481803A (en) | 1992-03-16 |
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