JP2913302B2 - Surveillance mirror - Google Patents
Surveillance mirrorInfo
- Publication number
- JP2913302B2 JP2913302B2 JP63183091A JP18309188A JP2913302B2 JP 2913302 B2 JP2913302 B2 JP 2913302B2 JP 63183091 A JP63183091 A JP 63183091A JP 18309188 A JP18309188 A JP 18309188A JP 2913302 B2 JP2913302 B2 JP 2913302B2
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- back plate
- longitudinal direction
- shape
- plate
- 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
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000011347 resin Substances 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 description 11
- 238000005452 bending Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- -1 acryl Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 102220040325 rs147972150 Human genes 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明は監視ミラーに関し、さらに詳しくは楕円形ま
たは長方形をした凸面鏡の監視ミラーに関する。Description: FIELD OF THE INVENTION The present invention relates to surveillance mirrors, and more particularly, to elliptical or rectangular convex mirror surveillance mirrors.
スーパーマッケット等のように、広い売り場面積を少
人数の店員でカバーするようにした店舗では、万引き等
の犯罪が起こりやすい。従来、このような犯罪を防止す
るため、店舗内の適宜の高い場所に、監視用の凸面鏡を
設けるようにしたものがある。In stores such as supermarkets that cover a large sales area with a small number of clerks, crimes such as shoplifting are likely to occur. Conventionally, in order to prevent such crimes, there is a configuration in which a monitoring convex mirror is provided at an appropriate high place in a store.
従来、この凸面鏡は円形のものが使用されていたが、
本出願人は、先に上記のような凸面鏡の監視効果を一層
向上するものとして、円形に代えて楕円形にした楕円ミ
ラーを提案した。この楕円ミラーは上下方向の長さを短
縮し、水平方向の長さを長くしたものであるので、商品
陳列に必要な縦方向のスペースを犠牲にせず、しかも一
層ワイドに左右方向の監視効果を高めることができるよ
うになった。Conventionally, this convex mirror used a circular mirror,
The present applicant has previously proposed an elliptical mirror having an elliptical shape instead of a circular shape in order to further improve the monitoring effect of the convex mirror as described above. This elliptical mirror has a reduced vertical length and a longer horizontal length, so it does not sacrifice the vertical space required for product display, and has a wider monitoring effect in the horizontal direction. Can be enhanced.
しかしながら、薄肉樹脂製の球面体から楕円形に切り
出された楕円ミラーは、長手方向（長径方向）の軸線を
中心に捩じれを発生するという特性がある。このように
捩じれを生じたままの楕円ミラーは、鏡面が一定の安定
した球面状態を保持していないため映像が安定せず、監
視ミラーとして機能させることが難しくなる。However, an elliptical mirror cut out from a spherical body made of a thin resin into an ellipse has a characteristic that a torsion is generated about an axis in a longitudinal direction (a major axis direction). Since the mirror surface of the elliptical mirror that has been twisted as described above does not maintain a constant and stable spherical state, the image is not stable, and it is difficult to function as a monitoring mirror.
上記のように捩じれを生ずる原因はよくわからない
が、次のような理由によるものと思われる。すなわち、
薄肉樹脂製の球面体から切り出された楕円ミラーは可撓
性である上に、球面体の表面には球面の曲率半径を小さ
くする方向に表面張力が作用するので、丸く巻き込まれ
るような変形が顕れる。他方、弧長が長い長径方向と弧
長が短い短径方向とでは互いに曲げ剛性が異なるので、
それぞれ上記表面張力と釣り合った状態になるまでの曲
げ変形量が異なり、この変形量の差が捩じれになって顕
れるものと思われる。The cause of the twist as described above is not clearly understood, but is considered to be due to the following reasons. That is,
An elliptical mirror cut from a thin resin spherical body is flexible, and surface tension acts on the surface of the spherical body in the direction of decreasing the radius of curvature of the spherical surface, so that deformation such as being rolled up roundly Appear. On the other hand, since the bending stiffness is different between the long diameter direction where the arc length is long and the short diameter direction where the arc length is short,
The amount of bending deformation until the surface tension is balanced with each other is different, and it is considered that this difference in the amount of deformation appears as torsion.
本発明の目的は、上述した薄肉樹脂製の球面体から楕
円形に切り出された可撓性の楕円形ミラーに顕れる捩じ
れを防止し、常時優れた監視機能が維持できるようにす
る監視ミラーを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a surveillance mirror that prevents a twist that appears in a flexible elliptical mirror cut out into an ellipse from a spherical body made of the above-described thin resin and that can always maintain an excellent surveillance function. Is to do.
本発明の監視ミラーは、薄肉樹脂製の球面体から楕円
形に切り出された凸面の鏡面体の裏面側に、ベニヤ板か
ら楕円形に切り出された裏板の長手方向にベニヤ板から
なる帯状の補強板を一体に接着した成形体を取付け、前
記裏板は正面視形状が前記鏡面体と同じ楕円形で、長手
方向の側面視形状が該鏡面体外縁部の長手方向側面視の
湾曲形状と同じ曲率で湾曲し、該長手方向の横断方向に
は直線状であると共に、該裏板外周縁部が前記鏡面体外
周縁部に合致するように固定され、また前記補強板は長
手方向が前記裏板の長手方向に沿って該裏板の長手方向
の湾曲と同じ曲率で湾曲し、該長手方向の横断方向には
直線状であることを特徴とするものである。The surveillance mirror of the present invention is a belt-like reinforcing plate made of a veneer plate in the longitudinal direction of a back plate cut out elliptical from a plywood, on the back side of a convex mirror body cut out elliptical from a spherical body made of thin resin. Is attached, and the back plate has the same elliptical shape as the front view and the same shape as the mirror body, and the side view in the longitudinal direction has the same curvature as the curved shape of the outer edge of the mirror body in the longitudinal side view. In the transverse direction of the longitudinal direction, it is linear, and the outer peripheral edge of the back plate is fixed so as to coincide with the outer peripheral edge of the mirror body, and the reinforcing plate has a longitudinal direction corresponding to that of the back plate. It is characterized by being curved along the longitudinal direction at the same curvature as that of the back plate in the longitudinal direction, and being linear in the transverse direction of the longitudinal direction.
以下、本発明を図に示す実施例により具体的に説明す
る。Hereinafter, the present invention will be described in detail with reference to an embodiment shown in the drawings.
第１図〜第３図は本発明からなる監視ミラーの一例を
示すものである。1 to 3 show an example of a monitoring mirror according to the present invention.
図において、１は楕円形をした凸面鏡からなる鏡面
体、２は鏡面体１の裏面に捩じれ防止用に取り付けられ
た裏板、３はその裏板２を補強する補強板、４はフレキ
シブルチューブからなる取付けアーム、５は鏡面体１と
裏板２との両外周縁部を包むようにした縁材である。In the figure, 1 is a mirror body composed of an elliptical convex mirror, 2 is a back plate attached to the back surface of the mirror body 1 for preventing twisting, 3 is a reinforcing plate for reinforcing the back plate 2, 4 is a flexible tube. The mounting arm 5 is an edge member that wraps both outer peripheral edges of the mirror body 1 and the back plate 2.
この実施例では、上記鏡面体１はアクリル等の透明樹
脂板から成形された球面体をし、その片面（通常は裏
面）にアルミニウム等の金属メッキ或いは金属蒸着が施
されることによって構成されている。また、第３図Ａの
ように正面視では楕円形であり、また第３図Ｂのように
上面視でみた長手方向の側面形状は三日月状に湾曲した
ものとなっている。In this embodiment, the mirror body 1 is a spherical body formed from a transparent resin plate such as acryl, and one surface (usually the back surface) is formed by metal plating or metal evaporation of aluminum or the like. I have. Further, as shown in FIG. 3A, the shape is elliptical when viewed from the front, and as shown in FIG. 3B, the side shape in the longitudinal direction when viewed from above is curved like a crescent.
また、上記裏板２はベニヤ板から作られており、その
外形は正面視では上記鏡面体１の楕円形と同じ形状であ
り、また長手方向の側面視では円弧状に湾曲している。
この長手方向の湾曲形状は、第３図Ｂで示す上面視にお
ける鏡面体１の縁材５に沿う形状と略同じになってい
る。このような形状をした裏板２の内面側には、その長
手方向に沿って、同じ湾曲形状をしたベニヤ板からなる
補強板３が一体に接着されている。The back plate 2 is made of a plywood, and its outer shape is the same as the elliptical shape of the specular body 1 in a front view, and is curved in an arc shape in a longitudinal side view.
The curved shape in the longitudinal direction is substantially the same as the shape along the edge member 5 of the mirror body 1 in a top view shown in FIG. 3B. A reinforcing plate 3 made of a veneer plate having the same curved shape is integrally bonded to the inner surface side of the back plate 2 having such a shape along the longitudinal direction.
上記補強板３を接着した裏板２は、その外周縁部を鏡
面体１の外周縁部に合致させるようにし、かつこれら合
致させた両外周縁の外側に、ゴム，プラスチック等から
なる縁材５を接着剤等を介して被せて一体に固定されて
いる。このように固定された裏板２に、取付けアーム４
が固定されている。The back plate 2 to which the reinforcing plate 3 is adhered has its outer peripheral edge coincident with the outer peripheral edge of the mirror body 1, and a rim material made of rubber, plastic, etc. 5 is covered with an adhesive or the like and is fixed integrally. The mounting arm 4 is attached to the back plate 2 thus fixed.
Has been fixed.
上述のように補強板３を湾曲状に接着複合させた裏板
２は、次のようにして製作することができる。すなわ
ち、第４図に示すように、それぞれ平板状のベニヤ板か
ら楕円形の裏板２と長方形の補強板３とを切り出し、こ
れら補強板３の合面側と裏板２のハッチングを施した部
分とに、それぞれ接着材Ｐを塗布して両者を一体に接着
し、さらに図示しない凹湾曲面を有する凹型と凸湾曲面
を有する凸型との間に挟んで加熱プレスするようにす
る。この加熱プレスによって、第５図に示すように両材
料は一体化して湾曲した成形体になる。このように裏板
２と補強板３とが接着一体化した成形体は、両板とも複
数の素板が木目を互いに交差させるように貼り合わせて
高い剛性を有するベニヤ板からなり、かつ両板が接着す
る合面において、特に長手方向を円弧状に湾曲させるこ
とにより内側の曲率半径が小さい裏板２に圧縮応力を、
外側の曲率半径が大きい補強板３に引張り応力をそれぞ
れ生じさせ、両板間で応力が釣り合った状態にして湾曲
形状を安定化させる。他方、長手方向に交差する横断方
向では、両板の合面は直線状であるので両板間に相互に
影響し合う応力は発生せず、安定になっている。The back plate 2 in which the reinforcing plate 3 is bonded and compounded in a curved shape as described above can be manufactured as follows. That is, as shown in FIG. 4, an elliptical back plate 2 and a rectangular reinforcing plate 3 are cut out from a flat plywood plate, and the mating side of these reinforcing plates 3 and the hatched portion of the back plate 2 are hatched. Then, an adhesive P is applied to each of them, and the two are integrally adhered to each other, and further, are heated and pressed between a concave mold having a concave curved surface (not shown) and a convex mold having a convex curved surface. By this heating press, as shown in FIG. 5, both materials are integrated into a curved molded body. The molded body in which the back plate 2 and the reinforcing plate 3 are bonded and integrated as described above is formed of a veneer plate having high rigidity by bonding a plurality of base plates so that the wood grain crosses each other. In the bonding surface to be bonded, compressive stress is applied to the inner back plate 2 having a small radius of curvature by bending the longitudinal direction into an arc shape.
Tensile stress is generated in each of the outer reinforcing plates 3 having a large radius of curvature, and the stress is balanced between the two plates to stabilize the curved shape. On the other hand, in the transverse direction which intersects the longitudinal direction, the mating surfaces of the two plates are straight, so that no mutually influencing stress is generated between the two plates, and the plates are stable.
したがって、成形体の長手方向は鏡面体１の長手方向
と同じように湾曲させるが、成形体全体として安定化し
た湾曲形状になっている。もし、補強板３を設けずに裏
板２だけにすると、上記のように合面で応力を釣り合わ
せることがないので、その裏板２の湾曲状態が安定せ
ず、これを鏡面体１の裏側に取り付けても、鏡面体１の
捩じれを安定化させることはできない。なお、補強板３
を裏板２の内側に接着させ、上記と内外の位置関係を逆
にする場合でも、上記湾曲形状の安定化効果を同じにす
ることができる。Accordingly, the longitudinal direction of the molded body is curved in the same manner as the longitudinal direction of the mirror body 1, but the molded body as a whole has a stabilized curved shape. If only the back plate 2 is provided without the reinforcing plate 3, the stress is not balanced at the mating surface as described above, so that the curved state of the back plate 2 is not stabilized, and this is Even if it is mounted on the back side, the twist of the mirror body 1 cannot be stabilized. The reinforcing plate 3
Can be made the same, even if the inner and outer positional relations are reversed by adhering to the inside of the back plate 2.
このように湾曲形状が安定化した裏板２と補強板３と
の成形体がその外周縁部を鏡面体１の外周縁部に合致さ
せて固定されることにより、鏡面体１には捩じれを発生
することがなくなる。Since the molded body of the back plate 2 and the reinforcing plate 3 having the stabilized curved shape is fixed so that the outer peripheral edge thereof matches the outer peripheral edge of the mirror body 1, the mirror body 1 is not twisted. Will not occur.
また、本発明の監視ミラーは、実施例に記載した防犯
ミラーのみならず、無人工場の監視用など他の監視用と
しても使用することができる。Further, the surveillance mirror of the present invention can be used not only for the security mirror described in the embodiment but also for other surveillance such as surveillance of an unmanned factory.
上述したように、本発明の監視ミラーは、鏡面体が薄
肉樹脂製の鏡球面体から楕円形に切り出された楕円形ミ
ラーからなるものではあるが、補強板と一体に湾曲成形
した裏板を外周縁部を合致させるように取り付けている
ため、鏡面体に捩じれを発生することがなく、常時優れ
た監視機能を発揮することができる。As described above, the surveillance mirror of the present invention is configured such that the mirror body is an elliptical mirror cut out into an elliptical shape from a mirror spherical body made of a thin resin. Since the outer peripheral edge portions are fitted so as to match each other, the mirror body is not twisted and an excellent monitoring function can always be exhibited.
【図面の簡単な説明】 第１図〜第３図は本発明の実施例からなる監視ミラーを
示し、第１図は第３図ＡにおけるＩ−Ｉ矢視断面図、第
２図は同じく第３図ＡにおけるII−II矢視断面図、第３
図Ａは上記監視ミラーの正面図、第３図Ｂは同監視ミラ
ーの上面図、第３図Ｃは同監視ミラーの側面図である。
第４図は上記監視ミラーに使用される裏板と補強板を加
工する際の状況を示す説明図、第５図は同加工後の裏板
と補強板を示す斜視図である。 １……鏡面体、２……裏板、３……補強板、４……取付
けアーム、５……縁材。BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1 to 3 show a monitoring mirror according to an embodiment of the present invention, FIG. 1 is a sectional view taken along the line II in FIG. 3A, and FIG. 3 A sectional view taken along the line II-II in FIG.
FIG. A is a front view of the monitoring mirror, FIG. 3B is a top view of the monitoring mirror, and FIG. 3C is a side view of the monitoring mirror.
FIG. 4 is an explanatory view showing a situation when the back plate and the reinforcing plate used for the monitoring mirror are processed, and FIG. 5 is a perspective view showing the back plate and the reinforcing plate after the processing. 1 Mirror surface, 2 Back plate, 3 Reinforcement plate, 4 Mounting arm, 5 Edge material.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G02B 5/08 - 5/10 B60R 1/04 - 1/06 A47G 1/00 - 1/24 E01F 9/00 - 11/00 Continuation of the front page (58) Field surveyed (Int.Cl. 6 , DB name) G02B 5/08-5/10 B60R 1/04-1/06 A47G 1/00-1/24 E01F 9/00-11 / 00
Claims (1)
れた凸面の鏡面体の裏面側に、ベニヤ板から楕円形に切
り出された裏板の長手方向にベニヤ板からなる帯状の補
強板を一体に接着した成形体を取付け、前記裏板は正面
視形状が前記鏡面体と同じ楕円形で、長手方向の側面視
形状が該鏡面体外縁部の長手方向側面視の湾曲形状と同
じ曲率で湾曲し、該長手方向の横断方向には直線状であ
ると共に、該裏板外周縁部が前記鏡面体外周縁部に合致
するように固定され、また前記補強板は長手方向が前記
裏板の長手方向に沿って該裏板の長手方向の湾曲と同じ
曲率で湾曲し、該長手方向の横断方向には直線状である
ことを特徴とする監視ミラー。1. A belt-shaped reinforcing plate made of a veneer plate is longitudinally integrated with a back surface of an oval cut out of a veneer plate, on the back side of a convex mirror body cut out of an oval shape from a thin resin spherical body. The back plate has an elliptical shape in front view and the same elliptical shape as the mirror body, and a longitudinal side shape is curved with the same curvature as a curved shape of the outer edge of the mirror body in longitudinal side view. The back plate is fixed in such a manner that it is linear in the transverse direction of the longitudinal direction, and the outer peripheral edge of the back plate coincides with the outer peripheral edge of the mirror body. A surveillance mirror characterized in that the surveillance mirror is curved at the same curvature as the longitudinal direction of the back plate along the longitudinal direction, and is linear in the transverse direction of the longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183091A JP2913302B2 (en) | 1988-07-22 | 1988-07-22 | Surveillance mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63183091A JP2913302B2 (en) | 1988-07-22 | 1988-07-22 | Surveillance mirror |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0233101A JPH0233101A (en) | 1990-02-02 |
| JP2913302B2 true JP2913302B2 (en) | 1999-06-28 |
Family
ID=16129602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63183091A Expired - Fee Related JP2913302B2 (en) | 1988-07-22 | 1988-07-22 | Surveillance mirror |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2913302B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4902152B2 (en) * | 2005-08-01 | 2012-03-21 | 株式会社日立システムズ | Rear confirmation mirror |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6123309U (en) * | 1984-07-16 | 1986-02-12 | 文和 土井 | road reflector |
| JPS6381911U (en) * | 1986-11-13 | 1988-05-30 |
-
1988
- 1988-07-22 JP JP63183091A patent/JP2913302B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0233101A (en) | 1990-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S531 | Written request for registration of change of domicile |
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