JPH0234687Y2 - - Google Patents
Info
- Publication number
- JPH0234687Y2 JPH0234687Y2 JP1983002352U JP235283U JPH0234687Y2 JP H0234687 Y2 JPH0234687 Y2 JP H0234687Y2 JP 1983002352 U JP1983002352 U JP 1983002352U JP 235283 U JP235283 U JP 235283U JP H0234687 Y2 JPH0234687 Y2 JP H0234687Y2
- Authority
- JP
- Japan
- Prior art keywords
- flexible belt
- horizontal
- holes
- tubular part
- projection screen
- 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
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
【考案の詳細な説明】
本考案は使用に際して懸架した場合にうねり状
の凹凸が発生しないように工夫した映写用スクリ
ーンの改良に関するものであつて、上辺に吊下用
横杆を挿通する管状部を下辺に錘用横杆を挿通す
る管状部を夫々折曲自在の柔軟ベルト部を介して
設けると共に柔軟ベルト部に多数の孔を横列配置
で設けたことを要旨とするものである。[Detailed description of the invention] The present invention relates to an improvement of a projection screen that is devised to prevent the occurrence of undulating irregularities when suspended during use. The main feature is that a tubular part through which a horizontal rod for a weight is inserted is provided on the lower side of the belt via a bendable flexible belt part, and a large number of holes are arranged in horizontal rows in the flexible belt part.
尚、図示せる実施例は熱可塑性軟質合成樹脂シ
ート製のスクリーン本体１の上下両辺に薄手の熱
可塑性軟質合成樹脂シート製帯状片２，２′を継
ぎ足し、これ等各帯状片２，２′の外側半分を二
つ折りとして其の外端縁を同帯状片２，２′の横
中央線個所に熔着することによつてスクリーン本
体１の上辺に吊下用横杆３を抜去可能に挿通する
管状部４を同じく下辺に錘用横杆５を抜去可能に
挿通する管状部６を夫々設けると共に上記の帯状
片２，２′の内側半分を柔軟ベルト部７とし、こ
の柔軟ベルト部７に多数個の切孔８を横列配置で
切設したものである。 In the illustrated embodiment, thin strips 2 and 2' made of a thin thermoplastic soft synthetic resin sheet are added to both the upper and lower sides of the screen body 1 made of a thermoplastic soft synthetic resin sheet, and each of these strips 2 and 2' is By folding the outer half in half and welding the outer edge to the horizontal center line of the strips 2 and 2', the horizontal suspension rod 3 is removably inserted into the upper side of the screen body 1. The tubular portions 4 are each provided with a tubular portion 6 on the lower side through which the cross rod 5 for weight is removably inserted, and the inner half of the above-mentioned strips 2, 2' is used as a flexible belt portion 7. The holes 8 are cut in horizontal rows.
本考案は柔軟ベルト部に設ける孔は角孔、長
孔、縦向きの切線状孔等で実施することもでき
る。 In the present invention, the holes provided in the flexible belt portion may be square holes, long holes, vertically oriented perpendicular holes, etc.
従来、この種の映写用スクリーンに於て上辺に
吊下用横杆を挿通する管状部を下辺に錘用横杆を
挿通する管状部を夫々折曲自在の柔軟ベルト部を
介して設けこの柔軟ベルト部に孔を設けていない
ものは使用に際して伸展懸架した場合には往々に
うねり状凹凸（映像の歪みの原因となる）を発生
する不都合があつた。 Conventionally, in this type of projection screen, a tubular part on the upper side through which the horizontal rod for hanging is inserted, and a tubular part on the lower side through which the horizontal rod for weight is inserted are respectively provided via a bendable flexible belt part. Those without holes in the belt section often have the disadvantage of generating undulations (causing image distortion) when stretched and suspended during use.
本考案は斯る不都合を解消せんとするものであ
つて叙上の如く柔軟ベルト部に多数の孔を横列配
置で設けて成るので、うねり状凹凸の発生の原因
となる例えば捻れ力等を孔同士間の細幅部の多数
個が個々にねじれて吸収もしくは拡散し仍つてう
ねり状凹凸の発生を解消するものであつて所期の
目的を完全に達成する効果を有するものである。 The present invention is an attempt to eliminate such inconveniences, and as mentioned above, a large number of holes are provided in a horizontal row in the flexible belt portion, so that the holes can absorb twisting force, etc. A large number of narrow portions between the two are individually twisted and absorbed or diffused to eliminate the occurrence of undulations and convexities, which has the effect of completely achieving the intended purpose.
図は本考案映写用スクリーンの実施例を示すも
のであつて、第１図は全体を示す斜視図、第２図
は第１図Ａ−Ａ線に沿う断面図である。
１……スクリーン本体、２，２′……帯状片、
３……吊下用横杆、４……管状部、５……錘用横
杆、６……管状部、７……柔軟ベルト部、８……
切孔。
The drawings show an embodiment of the projection screen of the present invention, in which FIG. 1 is a perspective view showing the whole, and FIG. 2 is a sectional view taken along line A--A in FIG. 1. 1...Screen body, 2, 2'...Strip piece,
3... Horizontal rod for hanging, 4... Tubular part, 5... Horizontal bar for weight, 6... Tubular part, 7... Flexible belt part, 8...
Cut hole.
Claims (1)
用横杆を挿通する管状部を夫々折曲自在の柔軟ベ
ルト部を介して設けた合成樹脂シート製映写用ス
クリーンに於て、柔軟ベルト部に多数の孔を横列
配置で設けて成る映写用スクリーン。 In a projection screen made of a synthetic resin sheet, a flexible belt is provided with a tubular part on the upper side through which the horizontal rod for hanging is inserted, and a tubular part on the lower side through which the horizontal rod for weight is inserted, through a bendable flexible belt part. A projection screen consisting of a belt with many holes arranged in horizontal rows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983002352U JPS59109331U (en) | 1983-01-12 | 1983-01-12 | projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983002352U JPS59109331U (en) | 1983-01-12 | 1983-01-12 | projection screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59109331U JPS59109331U (en) | 1984-07-23 |
| JPH0234687Y2 true JPH0234687Y2 (en) | 1990-09-18 |
Family
ID=30134020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983002352U Granted JPS59109331U (en) | 1983-01-12 | 1983-01-12 | projection screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59109331U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743713Y2 (en) * | 1987-10-27 | 1995-10-09 | 大日本印刷株式会社 | Transmissive screen |
| JP5971092B2 (en) * | 2012-11-16 | 2016-08-17 | 株式会社オーエスエム | Magnet screen device |
-
1983
- 1983-01-12 JP JP1983002352U patent/JPS59109331U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59109331U (en) | 1984-07-23 |
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