JPH0216807B2 - - Google Patents
Info
- Publication number
- JPH0216807B2 JPH0216807B2 JP58050457A JP5045783A JPH0216807B2 JP H0216807 B2 JPH0216807 B2 JP H0216807B2 JP 58050457 A JP58050457 A JP 58050457A JP 5045783 A JP5045783 A JP 5045783A JP H0216807 B2 JPH0216807 B2 JP H0216807B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- holding frame
- top surface
- recess
- groove
- 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 - Lifetime
Links
- 239000003550 marker Substances 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Landscapes
- Road Signs Or Road Markings (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は路面からの露出高を低くして除雪車の
除雪刃によつて投光窓が破壊されないようにした
埋込形標識灯に関する。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is directed to a recessed light emitting window that has a low exposure height from the road surface and prevents the floodlight window from being destroyed by the snow removal blade of a snowplow. Regarding shape marker lights.
（従来の技術）
空港の滑走路や誘導路などには標識灯が埋設さ
れている。このような標識灯は、たとえば特開昭
57−162205号公報に開示されているように、上面
が中央に近ずくほど高くなるように傾斜して、こ
の上面が路面上に露出するように埋設され、中央
寄りに凹部を形成し、さらに、上面には周辺部近
傍から凹部に近づくほど順次深くなる光投射溝を
放射状に形成した保持枠と、この保持枠の凹部に
はめ込まれ、頂面の周辺部が保持枠上面の傾斜に
連続した斜面をなして路面上に突出し、かつ光投
射溝に連続する光導出溝を斜面の部分を切欠して
形成するとともに内部に光学系を収納して、光ビ
ームを光導出溝および光投射溝を介して導出する
ようにした灯体とからなり、灯体頂面が路面から
10〜30mm突出して埋設され、標識光を路面に対し
10〜20゜の角度で上方に投射している。(Prior Art) Signal lights are embedded in airport runways, taxiways, etc. This kind of indicator light is, for example,
As disclosed in Japanese Patent No. 57-162205, the upper surface is inclined so that it becomes higher as it approaches the center, and is buried so that this upper surface is exposed above the road surface, and a recess is formed near the center, and , a holding frame in which light projection grooves are formed radially on the top surface and gradually deepens from near the periphery to the concave part, and the holding frame is fitted into the concave part of the holding frame, and the peripheral part of the top surface is continuous with the slope of the top surface of the holding frame. A light guide groove that forms a slope and projects above the road surface and is continuous with the light projection groove is formed by cutting out the slope part, and an optical system is housed inside to direct the light beam through the light guide groove and the light projection groove. The top surface of the light body is located above the road surface.
It is buried with a protrusion of 10 to 30 mm and emits a sign light to the road surface.
It projects upward at an angle of 10 to 20 degrees.
（発明が解決しようとする課題）
積雪時、除雪車を用いて路面の雪を除去する
が、このとき、除雪車の除雪刃にウレタン樹脂製
保護具を装着して路面の雪を掻き取つている。し
かし、上記特開昭57−162205号記載の埋込形標識
灯は標識灯の投光側から除雪刃が進んで来ると、
保護具が投光窓に引つ掛つて窓を閉塞している透
明体を破損するおそれがある。(Problem to be solved by the invention) When it snows, a snowplow is used to remove the snow from the road surface. At this time, a urethane resin protector is attached to the snowplow blade of the snowplow to scrape off the snow from the road surface. There is. However, in the recessed marker light described in JP-A No. 57-162205, when the snow removal blade advances from the light emitting side of the marker light,
There is a risk that the protective equipment may get caught on the floodlight window and damage the transparent body blocking the window.
これに対し、実開昭49−19682号公報には保持
枠上面が平坦面をなし、かつ路面とほぼ同一面を
なすように路面に埋設され、かつ灯体頂面の周辺
部が斜面をなし、かつその裾部は保持枠の上面と
ほぼ同じ高さにあり、かつ灯体頂面のみに光導出
溝を切欠形成してあるが、保持枠上面には光投射
溝を設けてない埋込形標識灯が開示されている。
このものは保持枠の上面が平坦でかつ路面とほぼ
同じ高さにあり、さらに灯体の裾部が保持枠上面
とほぼ同じ高さにあるので灯体頂面の高さを低く
できると思われる。しかし、このものは保持枠に
は光投射溝を設けてなく、灯体の光導出溝だけで
規定の投光角度を得るので、灯体の直径を極端に
大きくするか、または灯体頂面の高さを極端に高
くしなければならない。この場合、灯体の直径を
大きくすれば取扱いが不便であるばかりか高価に
なる欠点がある。また、灯体頂面の高さを高くす
れば上記公知技術と同様除雪時に破壊されるおそ
れがある。 On the other hand, in Japanese Utility Model Application Publication No. 49-19682, the upper surface of the holding frame is flat and is buried in the road surface so as to be almost flush with the road surface, and the peripheral part of the top surface of the lamp body is sloped. , and its hem is at almost the same height as the top surface of the holding frame, and a light guide groove is cut out only on the top surface of the lamp body, but there is no light projection groove on the top surface of the holding frame. A shaped marker light is disclosed.
In this case, the top surface of the holding frame is flat and at almost the same height as the road surface, and the bottom of the lamp body is at almost the same height as the top surface of the holding frame, so I think it is possible to lower the height of the top surface of the lamp body. It will be done. However, this device does not have a light projection groove in the holding frame, and the specified light projection angle is obtained only by the light guide groove of the lamp body, so it is necessary to make the diameter of the lamp extremely large or to must be extremely high. In this case, if the diameter of the lamp body is increased, it is not only inconvenient to handle but also expensive. Furthermore, if the height of the top surface of the lamp body is increased, there is a risk that it will be destroyed during snow removal, as in the above-mentioned known technology.
そこで、本発明の課題は埋込形標識灯におい
て、標識灯全体特に灯体頂面を路面に対しできる
だけ低く埋設でき、しかも標識光投射には全く支
障がなく、さらに大き過ぎないようにすることで
ある。 Therefore, an object of the present invention is to provide a recessed marker lamp that allows the entire marker lamp, especially the top surface of the lamp, to be buried as low as possible with respect to the road surface, without any problem with the projection of the marker light, and without being too large. It is.
（課題を解決するための手段）
保持枠の上面を平坦にして路面とほぼ同一面に
なるように路面に埋設し、その中央寄りに凹部を
形成するとともに上面には周辺部近傍から凹部に
向つて順次深くなる光投射溝を放射状に形成し、
保持枠の凹部にはめ込まれた灯体の周縁の高さが
保持枠の上面とほぼ同じになるように設定し、頂
面が周縁より実質的に高くし、さらに頂面と周縁
との間を斜面に形成し、かつ光投射溝に連続する
光導出溝を斜面の部分を切欠して形成するととも
に内部に光学系を収納して、光ビームを光導出溝
および光投射溝を介して導出するようにして、上
記目的を達成した埋込形標識灯である。
(Means for solving the problem) The upper surface of the holding frame is flattened and buried in the road surface so that it is almost flush with the road surface, and a recess is formed near the center of the holding frame. Light projection grooves are formed in a radial pattern that gradually deepens.
The height of the periphery of the lamp fitted in the recess of the holding frame is set to be approximately the same as the top surface of the holding frame, the top surface is substantially higher than the periphery, and the height between the top surface and the periphery is A light guide groove is formed on the slope and continuous with the light projection groove by cutting out a portion of the slope, an optical system is housed inside, and the light beam is guided through the light guide groove and the light projection groove. This is a recessed marker light that achieves the above objectives.
（作用）
保持枠の上面を平坦に構成するとともにこの上
面を路面とほぼ同一面になるように埋設し、かつ
灯体の周縁を保持枠の上面とほぼ同じ高さになる
ように凹部にはめ込むことによつて灯体の頂面を
低く設置することができる。しかも、保持枠上面
と灯体斜面とにそれぞれ光投射溝および光導出溝
を連続しかつ中央ほど深くなるように傾斜させて
切欠形成して灯体内部に光学系を収容したので、
光ビームが光導出溝および光投射溝を介して導出
し、上方に投射するので、灯体の路面上の高さが
低いにもかかわらず、標識光の投光方向には変化
がなく、投光には何んら支障がない。また、両溝
を直列に介して光を導出するので、灯体を大きく
する必要がない。(Function) The upper surface of the holding frame is configured to be flat, and this upper surface is buried so that it is almost flush with the road surface, and the peripheral edge of the light body is fitted into the recess so that it is approximately at the same height as the upper surface of the holding frame. This allows the top surface of the lamp to be installed low. Furthermore, the optical system is housed inside the lamp body by forming continuous light projection grooves and light guide grooves on the upper surface of the holding frame and the slope of the lamp body, respectively, and slanting the grooves so that they become deeper toward the center.
The light beam is guided through the light guide groove and the light projection groove and is projected upward, so even though the height of the lamp body above the road surface is low, there is no change in the projection direction of the marker light, and the projection direction remains unchanged. There is no problem with light. Furthermore, since light is led out through both grooves in series, there is no need to increase the size of the lamp body.
（実施例）
本発明の詳細を下記の各実施例によつて説明す
る。(Examples) The details of the present invention will be explained with reference to the following examples.
実施例 １
本実施例は双方向形埋込航空標識灯で、その詳
細を第１図および第２図に示す。図中、１は路
面、２はこの路面１に埋設された基台、４はこの
基台に装着されたその頂面をわずかに路面上に露
出した保持枠、３はこの保持枠４に保持された灯
体である。Embodiment 1 This embodiment is a two-way recessed aviation beacon light, the details of which are shown in FIGS. 1 and 2. In the figure, 1 is the road surface, 2 is a base buried in this road surface 1, 4 is a holding frame attached to this base whose top surface is slightly exposed above the road surface, and 3 is held by this holding frame 4. It is a light body.
上記保持枠４は円環状をなし、中央部には灯体
３がはめ込まれるためのたとえば円形二段孔すな
わち凹部４３を形成してあり、かつ環幅ｄは全周
どこでもほぼ一様に構成され、かつこの幅ｄは従
来のものに比較してたとえば片側50mm程大きく構
成されている。そして、上面４１は平坦平面をな
しかつその対称方向の周縁近傍から凹所４３方向
に向つて10〜20゜の下り勾配の底面を有する１対
の光投射溝４２，４２を穿設してある。そうして
上面４１を路面１にほぼ一致させて路面１に埋設
されている。 The holding frame 4 has an annular shape, and has, for example, a circular two-stage hole or recess 43 formed in the center thereof into which the lamp body 3 is fitted, and the ring width d is substantially uniform everywhere around the circumference. , and this width d is larger, for example, by about 50 mm on one side than the conventional one. The upper surface 41 has a flat surface, and is provided with a pair of light projection grooves 42, 42 having bottom surfaces with a downward slope of 10 to 20 degrees from the vicinity of the periphery in the symmetrical direction toward the recess 43. . It is buried in the road surface 1 with the upper surface 41 substantially aligned with the road surface 1.
上記灯体３は頂面３０が平面をなす円台形をな
して保持枠４の凹部４３に着脱自在にはめ込ま
れ、頂面３０の周辺部は斜面３１を形成してこの
斜面３１の周縁３２は保持枠４の上面４１とほぼ
同じ高さになるように設定されており、したがつ
て、頂面３０は保持枠上面４１より実質的に高く
なつており、かつ斜面３１には対称方向の周縁３
２から中央方向に向つてそれぞれ保持枠４の光投
射溝４２，４２に連続して同じ10〜20゜の下り勾
配の底面を有する１対の光導出溝３３，３３を切
欠き形成して、その奥部に光導出溝３３，３３の
延在方向に面して内部空所３４に連通する投光窓
３５，３５を設け、この窓３５，３５をリングプ
リズムなどの透明体３６，３６で閉塞し、内部空
所３４にランプ、反射板およびフイルタを組合せ
てなる１対の光学系３７，３７を配置してある。 The lamp body 3 has a trapezoidal shape with a flat top surface 30, and is removably fitted into the recess 43 of the holding frame 4.The peripheral portion of the top surface 30 forms a slope 31, and the peripheral edge 32 of the slope 31 The top surface 30 is set to be approximately the same height as the upper surface 41 of the holding frame 4, and therefore the top surface 30 is substantially higher than the upper surface 41 of the holding frame, and the slope 31 has a symmetrical peripheral edge. 3
A pair of light guide grooves 33, 33 having bottom surfaces with the same downward slope of 10 to 20 degrees are formed by cutting out a pair of light guide grooves 33, 33 continuously from the light projection grooves 42, 42 of the holding frame 4 toward the center from the groove 2, respectively. Light projection windows 35, 35 that face the extending direction of the light guide grooves 33, 33 and communicate with the internal space 34 are provided in the deep part thereof, and these windows 35, 35 are formed with transparent bodies 36, 36 such as ring prisms. A pair of optical systems 37, 37, which are a combination of a lamp, a reflector, and a filter, are arranged in the closed internal space 34.
この結果、保持枠４の上面４１は路面１とほぼ
同一面になるように位置しており、灯体３の斜面
３１の周縁３２は保持枠４の上面とほぼ同じ高さ
にあり、かつ灯体３の頂面３０は路面１より若干
高くなつている。そして、光投射溝４２および光
導出溝３３は一体的に連続し、保持枠４の上面４
１の周辺部たとえば周縁から10〜20゜の下り勾配
をなして投光窓３５に面している。 As a result, the upper surface 41 of the holding frame 4 is located almost flush with the road surface 1, and the peripheral edge 32 of the slope 31 of the lamp body 3 is located at almost the same height as the upper surface of the holding frame 4, and the lamp The top surface 30 of the body 3 is slightly higher than the road surface 1. The light projection groove 42 and the light guide groove 33 are integrally continuous, and the upper surface 4 of the holding frame 4
The peripheral portion of the light emitting device 1 faces the light projection window 35 with a downward slope of 10 to 20 degrees from the periphery, for example.
この標識灯は灯体３の光導出溝３３および保持
枠４の光投射溝４２の底面の傾斜が従来の標識灯
のそれと同じであるので、投光には何んら支障が
ない。しかも灯体頂面３０の路上高が従来より低
く、さらに投光窓３５の路上高が従来よりもさら
に低くなつているので、除雪時、除雪刃の保護具
が投光窓３５に引つ掛ることなく、したがつて透
明体３６を破壊することもない。しかも、本実施
例標識灯は灯体が従来のものと全く同じであるば
かりか、光の導出角度も従来と全く同じなので、
特性にも何んら変化がなく、小形に構成でき、さ
らに非積雪地用と互換性がある。そして、灯体３
それ自体は着脱自在で、かつ小形であるので、保
守点検が容易で信頼性も高い。 In this marker light, the slopes of the bottom surfaces of the light guide groove 33 of the lamp body 3 and the light projection groove 42 of the holding frame 4 are the same as those of the conventional marker light, so there is no problem in projecting light. Moreover, the road height of the top surface 30 of the light body is lower than before, and the road height of the floodlight window 35 is also lower than before, so that the protective equipment of the snow removal blade gets caught on the light floodlight 35 during snow removal. Therefore, the transparent body 36 is not destroyed. Moreover, not only does the indicator light of this embodiment have the same light body as the conventional one, but also the angle at which the light is emitted is exactly the same as the conventional one.
There is no change in characteristics, it can be configured in a compact size, and it is compatible with applications in non-snowy areas. And light body 3
Since it is detachable and small in size, maintenance and inspection are easy and highly reliable.
実施例 ２
本実施例は一方向形埋込航空標識灯で、その詳
細を第３図および第４図に示す。このものは保持
枠４の投光方向の幅d1が他方向の幅d2よりはるか
に広くなつている点が前述の実施例２と異つてお
り、この結果、基台２もこれに合わせて改造して
ある。しかし、灯体３の構造および寸法は従来と
同じであり、また、保持枠４の光投射溝４２の傾
斜も前述の実施例２と同様である。そこで、同一
部分には同一符号を付して説明を略す。Embodiment 2 This embodiment is a one-way recessed aviation beacon light, the details of which are shown in FIGS. 3 and 4. This device differs from the above-mentioned Example 2 in that the width d 1 of the holding frame 4 in the light projection direction is much wider than the width d 2 in the other direction, and as a result, the base 2 is also adjusted accordingly. It has been remodeled. However, the structure and dimensions of the lamp body 3 are the same as those of the conventional one, and the inclination of the light projection groove 42 of the holding frame 4 is also the same as in the second embodiment described above. Therefore, the same parts are given the same reference numerals and the explanation will be omitted.
この実施例２の標識灯も前述の実施例１のもの
と同様灯体３の頂面３０および保持枠４の頂面４
１の路上高を低く設置でき、しかも投光には何ん
の支障がなく、除雪時、保護具が投光窓３５に引
つ掛つて透明体３６を破壊することもない。さら
に、灯体３は小形でさらに非積雪地用と交互性が
ある。そして、保守点検が容易で信頼性が高いこ
と同様である。 The marker light of this second embodiment is similar to that of the first embodiment described above, including the top surface 30 of the lamp body 3 and the top surface 4 of the holding frame 4.
1 can be installed at a low road height, there is no problem with light projection, and there is no possibility that protective equipment will get caught on the light projection window 35 and destroy the transparent body 36 during snow removal. Furthermore, the lamp body 3 is small and can be used in non-snowy areas. Also, maintenance and inspection are easy and reliability is high.
なお、双方向形標識灯においても保持枠の投光
方向の幅を非投光方向の幅よりも大きくしてだ円
形に構成してもよい。 In addition, the width of the holding frame in the light emitting direction may be larger than the width in the non-light emitting direction, and the holding frame may be configured in an oval shape also in the two-way marker light.
さらに、本発明は自動車道の埋込形標識灯にも
適用できる。 Furthermore, the present invention can also be applied to recessed marker lights for motorways.
このように、本発明の埋込形標識灯は上面が平
坦でかつ路面とほぼ同一面になるように路面に埋
設され中央寄りに凹部を形成し、さらに上面に周
辺部近傍から凹部に向つて順次深くなる光投射溝
を放射状に形成した保持枠と、保持枠の凹部には
め込まれ、周縁の高さが保持枠の上面とほぼ同じ
になるように設定され頂面が周縁より実質的に高
く、さらに頂面と周縁との間を斜面に形成し、か
つ光投射溝に連続する光導出溝を斜面の部分を切
欠して形成するとともに内部に光学系を収納し
て、光ビームを光導出溝および光投射溝を介して
導出するようにした灯体とを設けたので、保持枠
上面が路面とほぼ同じ高さになり、かつ灯体頂面
および投光窓を路面に対して低く位置させること
ができ、除雪時投光窓に除雪刃が引つ掛つて透明
体を破壊するおそれがなくなり、しかも投光には
何んら支障がなく、さらに灯体の互換性もあり、
かつ灯体を特に大形にする必要がない。
As described above, the recessed marker lamp of the present invention is buried in the road surface so that the top surface is flat and almost flush with the road surface, and a recess is formed near the center, and the upper surface has a recess extending from the vicinity of the periphery toward the recess. The holding frame is fitted into a recessed part of the holding frame, and the height of the periphery is set to be approximately the same as the top surface of the holding frame, so that the top surface is substantially higher than the periphery. Furthermore, a slope is formed between the top surface and the peripheral edge, and a light guide groove that is continuous with the light projection groove is formed by cutting out the slope, and an optical system is housed inside to guide the light beam. Since the light body is led out through the groove and the light projection groove, the top surface of the holding frame is almost at the same height as the road surface, and the top surface of the light body and the light projection window are positioned low relative to the road surface. This eliminates the risk of the snow removal blade getting caught on the floodlight window during snow removal and damaging the transparent body, and there is no problem with light emission.Furthermore, the light body is compatible.
Moreover, there is no need to make the lamp body particularly large.
第１図は本発明の埋込形標識灯の第１の実施例
の平面図、第２図は同じく断面図、第３図は第２
の実施例の平面図、第４図は同じく断面図であ
る。
１…路面、２…基台、３…灯体、３０…灯体頂
面、３１…灯体斜面、３２…灯体周縁、３３…光
導出溝、３４…内部空所、３５…投光窓、３６…
透明体、３７…光学系、４…保持枠、４１…枠上
面、４２…光投射溝、４３…凹部。
FIG. 1 is a plan view of the first embodiment of the embedded type marker light of the present invention, FIG. 2 is a sectional view of the same, and FIG.
FIG. 4 is a plan view of the embodiment, and FIG. 4 is a sectional view as well. 1... Road surface, 2... Base, 3... Light body, 30... Light body top surface, 31... Light body slope, 32... Light body periphery, 33... Light guide groove, 34... Internal space, 35... Light flood window , 36...
Transparent body, 37... Optical system, 4... Holding frame, 41... Frame top surface, 42... Light projection groove, 43... Recessed portion.
Claims (1)
ように路面に埋設され、中央寄りに凹部を形成
し、さらに上面には周辺部近傍から凹部に向つて
順次深くなる光投射溝を放射状に形成した保持枠
と； 上記保持枠の凹部にはめ込まれ、周縁の高さが
保持枠の上面とほぼ同じになるように設定され、
頂面が周縁より実質的に高く、更に頂面と周縁と
の間を斜面に形成し、かつ前記溝に連続する光導
出溝を上記斜面の部分を切欠して形成するととも
に、内部に光学系を収納して、光ビームを上記光
導出溝及び前記光投射溝内を介して導出するよう
にした灯体と； を具備したことを特徴とする埋込形標識灯。 ２ 前記凹部は、偏心した位置に形成されている
とともに； 前記光投射溝は、凹部と周縁との間の上面の幅
が相対的に広い部分に形成されている； ことを特徴とする請求範囲第１項記載の埋込形標
識灯。[Scope of Claims] 1. The top surface is flat and is buried in the road surface so that it is almost flush with the road surface, and a recess is formed near the center, and the top surface becomes gradually deeper from near the periphery toward the recess. a holding frame having light projection grooves formed in a radial pattern; the holding frame is fitted into the recess of the holding frame, and the height of the periphery is set to be approximately the same as the top surface of the holding frame;
The top surface is substantially higher than the peripheral edge, and a slope is formed between the top surface and the peripheral edge, and a light guide groove continuous to the groove is formed by cutting out the slope, and an optical system is installed inside. 1. A recessed marker light comprising: a lamp body that accommodates a light beam and directs a light beam through the light guide groove and the light projection groove. 2. The recess is formed at an eccentric position; and the light projection groove is formed in a relatively wide portion of the upper surface between the recess and the peripheral edge. Recessed indicator light as described in paragraph 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58050457A JPS59177410A (en) | 1983-03-28 | 1983-03-28 | Embedding type marker lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58050457A JPS59177410A (en) | 1983-03-28 | 1983-03-28 | Embedding type marker lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59177410A JPS59177410A (en) | 1984-10-08 |
| JPH0216807B2 true JPH0216807B2 (en) | 1990-04-18 |
Family
ID=12859395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58050457A Granted JPS59177410A (en) | 1983-03-28 | 1983-03-28 | Embedding type marker lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59177410A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57162205A (en) * | 1981-03-30 | 1982-10-06 | Toshiba Electric Equip | Buried mark lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4919682U (en) * | 1972-05-22 | 1974-02-19 |
-
1983
- 1983-03-28 JP JP58050457A patent/JPS59177410A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57162205A (en) * | 1981-03-30 | 1982-10-06 | Toshiba Electric Equip | Buried mark lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59177410A (en) | 1984-10-08 |
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