JPH07295482A - Display device with lattice for shading - Google Patents
Display device with lattice for shadingInfo
- Publication number
- JPH07295482A JPH07295482A JP10796794A JP10796794A JPH07295482A JP H07295482 A JPH07295482 A JP H07295482A JP 10796794 A JP10796794 A JP 10796794A JP 10796794 A JP10796794 A JP 10796794A JP H07295482 A JPH07295482 A JP H07295482A
- Authority
- JP
- Japan
- Prior art keywords
- light
- shielding
- display
- display device
- grid
- 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.)
- Granted
Links
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、野球やソフトボールの
打撃練習場（所謂バッティングセンター）に設置される
ピッチャーの投球動作表示装置、或は、テニス練習場
（所謂オートテニス）に設置されるプレーヤーの動作表
示装置のように、表示面に対する視点（視認距離及び視
認位置）が狭い範囲で特定される用途に適した遮光用格
子付き表示装置に関し、殊に、設置場所の関係で表示装
置と視点との相対的な位置関係が変った場合でも、遮光
用格子によって視認性が阻害されないように簡単に調整
することができる遮光用格子付き表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is installed in a pitcher pitching movement display device installed in a baseball or softball batting practice field (so-called batting center) or a tennis practice field (so-called auto tennis). The present invention relates to a display device with a light-shielding grid suitable for a use such as a player operation display device in which the viewpoint (viewing distance and viewing position) with respect to the display surface is specified within a narrow range. The present invention relates to a display device with a light-shielding grating that can be easily adjusted so that the visibility is not hindered by the light-shielding grating even when the relative positional relationship with the viewpoint changes.
【０００２】[0002]
【従来の技術】野球の打撃練習場では、多数のピッチン
グマシンがそれぞれの正面に位置する約１５〜２０ｍ先
の打席に向かってボールを投出し、打者はこの打席に立
って投出されたボールを打ち返すことにより打撃の練習
を行う。ところが、実際の打撃では、打者は投手の投球
動作（モーション）を見てボールが投出されるタイミン
グを計りバットをスイングするので、ピッチングマシン
ではこのボールの投出タイミングが分かりづらいという
欠点があった。2. Description of the Related Art In a baseball batting practice field, a large number of pitching machines throw the ball toward a bat at a distance of about 15 to 20 m in front of each of them, and the batter stands at this bat. Practice hitting by hitting. However, in actual striking, the batter swings the bat by measuring the pitching motion (motion) of the pitcher and then swinging the bat. Therefore, the pitching machine has a drawback that the pitching timing of the ball is difficult to understand. .
【０００３】このような欠点を解消するため、図１４に
示すように、打者１１の正面に表示装置１２を設置して
投手の投球動作を映し出し、この画像の投手がボールを
投げるのと同じタイミングでピッチングマシン１３から
ボールを投出させることによって、打者１１が実際の打
撃と同じ感覚で打撃練習を行えるようにしたものが知ら
れている。In order to eliminate such a drawback, as shown in FIG. 14, a display device 12 is installed in front of the batter 11 to display the pitching motion of the pitcher, and the same timing as the pitcher throws the ball in this image. It is known that the batter 11 can perform batting practice with the same feeling as an actual batting by throwing a ball from the pitching machine 13.
【０００４】[0004]
【発明が解決しようとする課題】ところが、打撃練習場
は一般に明るい屋外に造られており、屋内に造られてい
る場合でもボールを見易いように明るい照明が施されて
いるので、このような場所で２０ｍ近くも離れた打者１
１に明瞭に見えるように投手の投球動作の画像を映し出
すには、周囲の明るさに対抗して高輝度の表示画面とす
ることが必要となり、高価な表示装置１２を使用しなけ
ればならないという問題があった。また、打者１１側か
ら見た場合、隣接する他の打席の表示装置１２も前方に
並んで見えるため、これらに映し出される投球動作の画
像が煩わしく、自分の打席の表示装置１２の画像のみに
集中し難いという問題もあった。However, since the batting practice field is generally built in a bright outdoor place, and even when it is built indoors, it is brightly illuminated so that the ball can be easily seen, such a place is required. Batter 1 close to 20m away
In order to display the image of the pitcher's pitching motion so that it can be clearly seen in 1, it is necessary to make the display screen of high brightness against the ambient brightness, and the expensive display device 12 must be used. There was a problem. Further, when viewed from the batter 11 side, the display devices 12 of the other adjacent bats can also be seen side by side in front, so the images of the pitching motions projected on these are troublesome, and only the images of the display device 12 of the player's bat are concentrated. There was also the problem that it was difficult to do.
【０００５】このような問題は、表示装置１２の前面
に、外光の入射を阻止する格子状の遮光材等を取付ける
ことによって、一応解決することができる。けれども、
格子状の遮光材を取付けると、打者１１の視点が表示装
置１２の真正面にある場合には画像が見易くなるが、設
置場所によって表示装置１２に対する視点の相対的位置
関係が上下左右に大きくずれると、遮光材によって画像
の視認が阻害される割合（阻害比率）が大きくなり、画
像が見づらくなるという問題が生じる。Such a problem can be solved for the time being by mounting a lattice-shaped light-shielding member or the like on the front surface of the display device 12 for blocking the incidence of external light. However,
If the batter 11's viewpoint is directly in front of the display device 12 when the lattice-shaped light-shielding material is attached, the image can be easily seen, but if the relative positional relationship of the viewpoint to the display device 12 deviates significantly vertically and horizontally depending on the installation location. The problem that the image is difficult to see due to an increase in the ratio (inhibition ratio) at which the visibility of the image is obstructed by the light shielding material.
【０００６】その場合、左右方向の視点のずれは、表示
装置１２を水平に回して表示面が正面の打席を向くよう
にセットすれば簡単に修正できるが、上下方向の視点の
ずれは、表示装置１２の設置面と打席の地面を略同じ
高さにするか、表示装置１２を傾けて設置するか、
表示装置１２の下側に角度調整用のスペーサを挟みこ
む、等の手段を講じて修正することが必要になる。けれ
ども、の場合は工事が大掛かりとなって費用が嵩むと
いう問題があり、また、やの場合は、表示装置１２
が大型で重量も大きいことから細かい角度調整が面倒で
手間がかかり、しかも表示装置１２の重心が偏るので倒
れやすくなるといった問題がある。In this case, the deviation of the viewpoint in the left-right direction can be easily corrected by turning the display device 12 horizontally so that the display surface faces the front bat, but the deviation of the viewpoint in the vertical direction is displayed. Whether the installation surface of the device 12 and the ground at the bat should be approximately at the same height, or the display device 12 should be installed at an angle.
It is necessary to take measures such as sandwiching a spacer for adjusting the angle on the lower side of the display device 12 for correction. However, in the case of, there is a problem that the construction is large and the cost is high, and in the case of or, the display device 12 is used.
However, there is a problem in that the fine angle adjustment is troublesome and time-consuming because of its large size, and the center of gravity of the display device 12 is biased, so that the display device 12 easily falls.
【０００７】本発明は、このような問題を一挙に解決で
きる便利な遮光用格子付き表示装置を提供することを目
的とする。It is an object of the present invention to provide a convenient display device with a light-shielding grid that can solve all of these problems at once.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、本発明の請求項１の遮光用格子付き表示装置は、前
方が開口した筐体の内部に表示体を取付けると共に、多
数の遮光板を縦横に交叉させて組立てた遮光用格子を表
示体の表示面の前に配置し、この遮光用格子を表示面に
対して所定の角度範囲内で前後に傾斜できるように筐体
の内側に取付けたことを特徴とする。In order to achieve the above object, a display device with a light-shielding grid according to a first aspect of the present invention has a display body mounted inside a housing having an opening at the front and a large number of light-shielding plates. The shading grating assembled by vertically and horizontally crossing is arranged in front of the display surface of the display body, and the shading grating is provided inside the housing so that the shading grating can be tilted back and forth within a predetermined angle range with respect to the display surface. It is characterized by being installed.
【０００９】そして、請求項２の装置は、遮光用格子を
表示体の表示面に対して±５°の範囲内で前後に傾斜で
きるように取付けたことを特徴とし、請求項３の装置
は、遮光用格子の両側端の遮光板を筐体の両側の側板に
回動自在に軸支して、これらの遮光板と側板を仮止具で
仮止めしたことを特徴とし、請求項４の装置は、遮光用
格子が表示体の表示面に対して平行な状態にあるとき、
遮光用格子の縦横の各遮光板を前方に仮想延長すると所
定の視点範囲を通過するように、各遮光板を所定の視点
範囲に向かって少しづつ傾斜させたことを特徴とし、請
求項５の装置は、筐体をキャスターの付いた可動台の上
に設置したことを特徴とし、請求項６の装置は、表示体
がＬＥＤドットマトリクス発光表示体であって、かつ、
表示面のサイズが高さ１ｍ×横幅０．４ｍ以上の大画面
であることを特徴とし、請求項７の装置は、遮光用格子
の各遮光板の表面を光無反射面としたことを特徴とし、
請求項８の装置は、遮光用格子の各遮光板の板厚を縦方
向又は横方向の遮光板配置間隔の２０分の１以下にした
ことを特徴とし、請求項９の装置は、遮光用格子の各遮
光板の前後幅を縦方向又は横方向の遮光板配置間隔の
２．０倍以上にしたことを特徴とする。The device according to claim 2 is characterized in that the light-shielding grating is attached so as to be tiltable back and forth within a range of ± 5 ° with respect to the display surface of the display body. The light-shielding plates at both ends of the light-shielding grid are rotatably supported by the side plates on both sides of the housing, and the light-shielding plates and the side plates are temporarily fixed by a temporary fixing tool. The device, when the light-shielding grid is parallel to the display surface of the display,
6. The light-shielding plate is tilted little by little toward the predetermined viewpoint range so that when each of the vertical and horizontal light-shielding plates of the light-shielding grid is virtually extended forward, the light-shielding plate is gradually inclined toward the predetermined viewpoint range. The device is characterized in that the casing is installed on a movable table with casters, and the device according to claim 6 is an LED dot matrix light emitting display, and
8. The display screen is a large screen having a height of 1 m and a width of 0.4 m or more, and the device of claim 7 is characterized in that the surface of each of the light-shielding plates of the light-shielding grid is a non-light-reflecting surface. age,
An apparatus according to claim 8 is characterized in that the thickness of each of the light-shielding plates of the light-shielding grid is set to 1/20 or less of the light-shielding plate arrangement interval in the vertical direction or the horizontal direction. It is characterized in that the front-back width of each light-shielding plate of the lattice is 2.0 times or more the light-shielding plate arrangement interval in the vertical direction or the horizontal direction.
【００１０】[0010]
【作用】本発明の請求項１の遮光用格子付き表示装置
は、表示体の表示面の前に配置した遮光用格子によっ
て、左、右、上、下の各斜め前方から表示面へ入射する
外光が遮断され、且つ、筐体によって周囲から入射する
外光も遮断されるので、表示画像のコントラストが改善
されて視認性が向上する。従って、明るい屋外に設置さ
れても、低輝度の安価な表示体を用いて見易い表示を行
うことができる。また表示面の前に遮光用格子がある
と、正面の特定の視点（視認距離及び視認位置）以外か
ら表示面を見ることが殆ど不可能となるので、特定の視
点、即ち視認者に対して個別に表示を行うことができ
る。In the display device with a light-shielding grating according to claim 1 of the present invention, the light-shielding grating disposed in front of the display surface of the display body allows light to enter the display surface from left, right, upper and lower diagonally front sides. Since the external light is blocked and the external light incident from the surroundings is also blocked by the housing, the contrast of the display image is improved and the visibility is improved. Therefore, even if it is installed in a bright outdoor place, it is possible to perform easy-to-see display using a low-luminance inexpensive display body. Further, if there is a light-shielding grid in front of the display surface, it is almost impossible to see the display surface from a specific front point (viewing distance and viewing position). It can be displayed individually.
【００１１】しかも、この遮光用格子は、表示体の表示
面に対して所定の角度範囲内で前後に傾斜できるように
筐体の内側に取付けてあるため、設置場所の関係で表示
面に対する視点の相対位置関係が上下にずれた場合で
も、装置全体を傾斜させることなく遮光用格子のみを前
後に傾斜させ、遮光用格子が視点の方向に対して直角と
なるように調整するだけで、表示画像の遮光用格子によ
る阻害比率を最小限に抑えて良好な視認性を維持するこ
とができる。なお、視点が左右方向にずれた場合は、装
置全体を水平に少し回して表示面が真正面の打席を向く
ようにセットすればよい。In addition, since this light-shielding grid is attached to the inside of the housing so that it can be tilted back and forth within a predetermined angle range with respect to the display surface of the display unit, the viewpoint of the display surface relative to the installation location. Even if the relative positional relationship of is shifted up and down, just tilt the light-shielding grid forward and backward without tilting the entire device, and adjust the light-shielding grid so that it is at a right angle to the viewpoint direction. A good visibility can be maintained by minimizing the inhibition ratio of the image shielding grid. If the viewpoint shifts in the left-right direction, the entire device may be turned horizontally a little and set so that the display surface faces the front bat.
【００１２】このような遮光用格子付き表示装置をバッ
ティングセンター等に設置する場合は、表示面から打者
の視点までの水平距離が約１５〜２０ｍであるのに対
し、個々の設置条件の差異、例えば装置の設置面と打席
地面の高低差等によって生じる上下方向の視点のずれ
は、通常、数十ｃｍ程度あるから、視点が上下にずれる
角度は大きくても５°以下である。従って、請求項２の
装置のように、遮光用格子を表示体の表示面に対して±
５°の範囲内で前後に傾斜できるように取付けてある
と、個々の設置条件に合わせて、上下にずれた視点の方
向に対して遮光用格子が必ず直角となるように調整する
ことができる。When such a display device with a light-shielding grid is installed in a batting center or the like, the horizontal distance from the display surface to the batter's viewpoint is about 15 to 20 m, whereas the difference in individual installation conditions is: For example, the vertical shift of the viewpoint caused by the height difference between the installation surface of the device and the ground at the bat is usually several tens of centimeters. Therefore, the angle at which the viewpoint shifts up and down is 5 ° or less at most. Therefore, as in the apparatus according to claim 2, the light-shielding grid is ± with respect to the display surface of the display body.
If it is mounted so that it can be tilted back and forth within a range of 5 °, it is possible to adjust so that the light-shielding grid is always at a right angle to the direction of the vertically offset viewpoint, according to the individual installation conditions. .
【００１３】また、請求項３の装置では、仮止具を緩め
て遮光用格子の両側端の遮光板と筐体の両側板との仮止
めを解除し、支軸を中心に遮光用格子を回動させながら
視点の方向に対して直角となるように傾斜角度を合わ
せ、その状態で仮止具を締付けることによって、簡単に
遮光用格子の角度調整を行うことができる。According to the third aspect of the present invention, the temporary fixing tool is loosened to release the temporary fixing between the light-shielding plates at both ends of the light-shielding grid and the both side plates of the housing, and the light-shielding grid is centered around the support shaft. The angle of the light-shielding grid can be easily adjusted by adjusting the inclination angle so as to be perpendicular to the direction of the viewpoint while rotating and tightening the temporary fixing tool in that state.
【００１４】ところで、遮光用格子が表示体の表示面に
対して平行な状態にあるとき、つまり遮光用格子が地面
に対して垂直の状態にあるときに、遮光用格子の横方向
の各遮光板が水平に配置されていると、正面の特定の視
点から見た場合、視点と同じ高さの遮光板は板厚しか見
えないが、その上下の遮光板は視点がわずかに斜め下方
又は斜め上方となるために、板厚に加えてその板面も見
えるようになり、遮光板が上下に離れるほど、この板面
の見える面積が拡大して、表示面の視認できる面積が減
少する。これは、縦方向の各遮光板が表示面に対して直
角に配置されている場合も同様であり、遮光板が視点か
ら左右に離れるほど、板面の見える面積が増大して表示
面の阻害比率（割合）が増大する。しかし、請求項４の
装置では、遮光用格子の縦横の各遮光板を前方に仮想延
長した場合に所定の視点範囲を通過するように、各遮光
板を所定の視点範囲に向かって少しづつ傾斜させてある
ので、その所定範囲の視点から見たとき各遮光板の板厚
しか見えなくなり、表示面の阻害比率が最小となって表
示面が極めて見易くなる。By the way, when the light-shielding grid is parallel to the display surface of the display body, that is, when the light-shielding grid is vertical to the ground, each light-shielding in the lateral direction of the light-shielding grid is performed. When the plates are placed horizontally, when viewed from a specific front view, the light shields at the same height as the viewpoint can only see the plate thickness, but the light shields above and below the light shields are slightly diagonally downward or diagonal. Since it is located at the upper side, the plate surface can be seen in addition to the plate thickness. As the light-shielding plate is vertically separated, the visible area of this plate surface is enlarged and the visible area of the display surface is reduced. This is also the case when the vertical light-shielding plates are arranged at right angles to the display surface, and as the light-shielding plates move away from the viewpoint to the left and right, the visible area of the plate surface increases and obstructs the display surface. The ratio increases. However, in the device according to claim 4, when each of the vertical and horizontal light-shielding plates of the light-shielding grid is virtually extended forward, each light-shielding plate is gradually inclined toward the predetermined viewpoint range so as to pass through the predetermined viewpoint range. Therefore, when viewed from the viewpoint of the predetermined range, only the plate thickness of each light shielding plate can be seen, the obstruction ratio of the display surface is minimized, and the display surface is extremely easy to see.
【００１５】また、請求項５の装置のように筐体をキャ
スターの付いた可動台の上に設置してあると、移動させ
る場合に便利であり、場所ごとの設置条件に合わせて簡
単に調整でき、且つ、装置を水平に回して左右方向の視
点のずれを修正する場合でも、一人で簡単に装置を回す
ことができる。Further, when the housing is installed on a movable table with casters as in the apparatus of claim 5, it is convenient when moving the housing, and it is easily adjusted according to the installation conditions for each place. Even if the device can be rotated horizontally to correct the deviation of the viewpoint in the left-right direction, the device can be easily rotated by one person.
【００１６】更に、請求項６の装置のように表示体が大
画面のＬＥＤドットマトリクス発光表示体であると、他
の発光表示体に比べて本質的に輝度が高く明瞭な上に、
表示のコントラストが著しく改善され、請求項７の装置
のように遮光用格子の各遮光板の表面を光無反射面にし
てあると、外光が遮光板の板面で吸収されて反射光が目
に入らず、請求項８の装置のように各遮光板の板厚を縦
方向又は横方向の遮光板配置間隔の２０分の１以下にし
てあると、各遮光板の板厚によって遮られる面積が僅か
となり、請求項９の装置のように各遮光板の前後幅（奥
行き）を縦方向又は横方向の遮光板配置間隔の２．０倍
以上にしてあると、斜め方向からの外光の遮断性が顕著
に向上するので、いずれの場合も一層明瞭で視認性の良
好な画像表示を行うことが可能となる。Further, when the display body is an LED dot matrix light emitting display body having a large screen as in the device of claim 6, the brightness is essentially higher than that of other light emitting display bodies, and in addition, it is clear.
The contrast of display is remarkably improved, and when the surface of each shading plate of the shading grating is made a non-reflecting surface as in the device of claim 7, outside light is absorbed by the plate surface of the shading plate and reflected light is generated. Invisible to the eyes, if the thickness of each of the light shielding plates is set to 1/20 or less of the light shielding plate arrangement interval in the vertical direction or the horizontal direction as in the device of claim 8, the light shielding plates are shielded by the thickness of each light shielding plate. The area becomes small, and when the front-back width (depth) of each light-shielding plate is set to be 2.0 times or more the light-shielding plate arrangement interval in the vertical direction or the horizontal direction as in the device of claim 9, external light from an oblique direction is obtained. In this case, it is possible to display a clearer image with better visibility.
【００１７】[0017]
【実施例】以下、図面を参照しながら、本発明の実施例
を詳述する。Embodiments of the present invention will be described in detail below with reference to the drawings.
【００１８】図１は本発明の一実施例に係る遮光用格子
付き表示装置を示す斜視図、図２は同装置の表示体の部
分斜視図、図３は同装置の遮光用格子の軸支部分の断面
図、図４は同装置の遮光用格子の仮止め部分の断面図、
図５は同装置の縦断面図、図６は視点が所定の位置にあ
る場合の同装置の断面図、図７は視点が上方に移動した
場合の同装置の断面図、図８は視点が下方に移動した場
合の同装置の断面図、図９は本発明の他の実施例に係る
遮光用格子付き表示装置を示す縦断面図、図１０は遮光
用格子の一つの升目を示す部分正面図、図１１は一枚の
遮光板について視点の移動の影響を説明する側面図、図
１２は遮光用格子の一つの升目について視点の移動の影
響を説明する部分正面図、図８は本発明の更に他の実施
例に係る遮光用格子付き表示装置を示す側面図である。FIG. 1 is a perspective view showing a display device with a light-shielding grid according to an embodiment of the present invention, FIG. 2 is a partial perspective view of a display body of the device, and FIG. 3 is a pivotal support portion of the light-shielding grid of the device. Sectional view of the same, FIG. 4 is a sectional view of a temporary fixing portion of the light-shielding grid of the device,
5 is a vertical sectional view of the device, FIG. 6 is a sectional view of the device when the viewpoint is at a predetermined position, FIG. 7 is a sectional view of the device when the viewpoint moves upward, and FIG. 9 is a sectional view of the same device when it is moved downward, FIG. 9 is a vertical sectional view showing a display device with a light-shielding grid according to another embodiment of the present invention, and FIG. 10 is a partial front view showing one square of the light-shielding grid. FIG. 11, FIG. 11 is a side view for explaining the influence of the movement of the viewpoint on one light shielding plate, FIG. 12 is a partial front view for explaining the influence of the movement of the viewpoint for one square of the light shielding lattice, and FIG. 8 is the present invention. FIG. 13 is a side view showing a display device with a light-shielding grid according to still another example of the present invention.
【００１９】本実施例は、打撃練習場に設置されて投球
動作を発光表示する遮光用格子付き表示装置を例示した
ものである。The present embodiment exemplifies a display device with a light-shielding grid, which is installed in a batting practice field to display the pitching motion by light emission.
【００２０】この装置は、図１及び図５に示すように、
前方が開口した筐体１の内部に表示体２を取付けると共
に、多数の遮光板３ａ，３ｂを縦横に交叉させて組立て
た遮光用格子３を表示体２の表示面２ａの前に配置し、
この遮光用格子３を表示面２ａに対して所定の角度範囲
内で前後に傾斜できるように筐体１の内側に取付けたも
のである。この装置の筐体１は、四隅にキャスター４ａ
が付いた可動台４に設置され、一人でも装置の移動や回
動を行うことができるようになっている。This device, as shown in FIG. 1 and FIG.
The display body 2 is attached to the inside of the housing 1 whose front is open, and the light-shielding grid 3 assembled by vertically and horizontally crossing a large number of light-shielding plates 3a is arranged in front of the display surface 2a of the display body 2.
The light-shielding grid 3 is attached to the inside of the housing 1 so that it can be tilted back and forth within a predetermined angle range with respect to the display surface 2a. The casing 1 of this device has casters 4a at the four corners.
It is installed on a movable table 4 with a mark so that one person can move or rotate the device.
【００２１】本実施例では、雨水等が入らないように背
面が閉じた筐体１を用いているが、表示体２から出る熱
を効率良く放出するためには、背面板に放熱用の孔を設
けたり、放熱用のフィンを設けることが望ましい。ま
た、雨水の入る心配がない場合は、背面板を取除いた筐
体を使用してもよい。In this embodiment, the case 1 whose rear surface is closed so that rainwater and the like does not enter is used. However, in order to efficiently dissipate the heat emitted from the display body 2, the rear plate has holes for heat dissipation. It is desirable to provide a heat sink or a fin for heat dissipation. In addition, if there is no risk of rainwater entering, a housing without the back plate may be used.
【００２２】表示体２は、図２に示すように、ＬＥＤを
内装した多数の発光ドット（画素）２ｂを表示面２ａに
縦横に配列形成したＬＥＤドットマトリクス発光表示体
より成るもので、各発光ドット２ｂを選択点灯制御する
ことにより、投手の投球動作など任意の画像を発光表示
できるものである。このような表示体２を用いて明るい
屋外等で鮮明な映像を表示するには、通常は各発光ドッ
ト２ｂ内のＬＥＤの数を増やしたり高輝度のものを使用
して、発光ドット２ｂの発光輝度を明るくする必要があ
るが、ここでは特別に高輝度のものを使用しなくても、
遮光用格子３の効果によって視認性の充分良好な画像を
表示することが可能となる。As shown in FIG. 2, the display body 2 is composed of an LED dot matrix light emitting display body in which a large number of light emitting dots (pixels) 2b containing LEDs are vertically and horizontally arranged on a display surface 2a. By selectively controlling the lighting of the dots 2b, an arbitrary image such as a pitching motion of a pitcher can be displayed by light emission. In order to display a clear image in a bright outdoor environment using such a display body 2, usually, the number of LEDs in each light emitting dot 2b is increased or a high brightness LED is used to emit light from the light emitting dot 2b. It is necessary to increase the brightness, but here, even if you do not use a special high brightness one,
Due to the effect of the light-shielding grating 3, it is possible to display an image with sufficiently good visibility.
【００２３】この表示体２の表示面２ａには投手の投球
動作の画像を表示するので、打者に違和感を生じさせな
い画像とするには、等身の７０％程度から等身大位の画
像とするのが実用上好ましく、従って画面サイズとして
は、高さが１〜２ｍ程度、横幅が０．４〜１ｍ程度のも
のが好適である。表示面２ａの発光ドット２ｂのドット
間隔は、打者までの距離、換言すれば視点までの距離が
約１５〜２０ｍと離れているので、４〜１０ｍｍ程度で
実用上十分精細な画像となる。このような画面サイズ、
ドットピッチの表示面は、１６×１６ドット〜２４×２
４ドット構成のＬＥＤパネルを縦横に連設配置して所望
のものを自由に構成でき、かつ表示体の奥行を薄くでき
るなど、ＬＥＤドットマトリクス方式が最適である。そ
の場合、遮光用格子３の各升目内のドット構成は、４×
４ドット〜２４×２４ドット程度が適当であり、好まし
くは８×８ドット〜１６×１６ドット程度とする。An image of the pitcher's pitching motion is displayed on the display surface 2a of the display body 2. Therefore, in order to make the batter not feel uncomfortable, the image should be about 70% of the actual size and the size of the body. Is practically preferable, and accordingly, a screen size having a height of about 1 to 2 m and a width of about 0.4 to 1 m is suitable. Since the distance to the batter, in other words, the distance to the viewpoint is about 15 to 20 m, the dot interval of the light emitting dots 2b on the display surface 2a is about 4 to 10 mm and a sufficiently fine image is practically obtained. Screen size like this,
The display surface of the dot pitch is 16x16 dots to 24x2
The LED dot matrix system is most suitable because it is possible to freely construct a desired one by arranging LED panels having a 4-dot configuration vertically and horizontally, and to make the depth of the display body thin. In that case, the dot configuration in each square of the light-shielding grid 3 is 4 ×
4 dots to 24 × 24 dots is suitable, and preferably 8 × 8 dots to 16 × 16 dots.
【００２４】本実施例では、上記のようなＬＥＤドット
マトリクス方式による発光表示体２を用いたが、本発明
はこれに限定されるものではなく、その他にも液晶表示
装置（ＬＣＤ[Liquid Crystal Display]）やプラズマデ
ィスプレイ（ＰＤＰ[PlasmaDisplay Panel]）若しくは
蛍光表示管等の発光表示体を用いることができる。In the present embodiment, the light emitting display body 2 of the LED dot matrix system as described above is used, but the present invention is not limited to this, and other liquid crystal display devices (LCD [Liquid Crystal Display] are used. ]), A plasma display (PDP [Plasma Display Panel]), or a light emitting display such as a fluorescent display tube can be used.
【００２５】前記の遮光用格子３は、切込みを等間隔で
設けた縦横の多数の遮光板３ａ，３ｂを直角に交叉さ
せ、その切込み同士を噛み合わせて井桁状に組立てたも
のである。このような遮光用格子３は、材料加工や組付
けが簡単であり、しかも板厚の極めて薄い材料としても
強度が得られるなどの利点がある。縦横の遮光板３ａ，
３ｂとしては樹脂板や金属板等が使用されるが、後で説
明するように、できるだけ薄い板厚で強度が得られるよ
うに鉄板等を使用することが望ましい。また、これらの
遮光板３ａ，３ｂは、光が反射しないように板面に黒色
系のつや消し塗装や表面処理を施して光無反射面とした
ものが好適であり、前記の筐体１も同様に内外両面を光
無反射面としたものが好適である。The light-shielding grid 3 is constructed by crossing a large number of vertical and horizontal light-shielding plates 3a, 3b, which are provided with notches at equal intervals, at right angles, and engaging the notches with each other to form a cross beam shape. Such a light-shielding grid 3 is advantageous in that it is easy to process and assemble the material, and the strength can be obtained even if the material is extremely thin. Vertical and horizontal shading plates 3a,
A resin plate, a metal plate, or the like is used as 3b, but as described later, it is desirable to use an iron plate or the like so that strength can be obtained with a plate thickness as thin as possible. Further, it is preferable that the light-shielding plates 3a and 3b have a non-light-reflecting surface by subjecting the plate surface to black matte coating or surface treatment so as not to reflect light. Further, it is preferable that both the inner and outer surfaces have a light non-reflective surface.
【００２６】尚、実用上は、表示面２ａの表面や前記の
遮光用格子３の前面に透光性のプラスチック板を装着し
て保護面とするが、前記の遮光板３ａ，３ｂを前後に二
分割して製作し、該透光性プラスチック板を遮光板の中
間に取付けた遮光用格子（不図示）としてもよい。In practice, a light-transmissive plastic plate is attached to the surface of the display surface 2a or the front surface of the light-shielding grid 3 as a protective surface, but the light-shielding plates 3a and 3b are arranged in front and rear. A light-shielding grid (not shown) may be produced by dividing the light-transmitting plastic plate into two parts and attaching the light-transmitting plastic plate in the middle of the light-shielding plate.
【００２７】図１２に示すように、遮光用格子３の縦方
向の遮光板３ａの配置間隔Ａと横方向の遮光板３ｂの配
置間隔Ｂは、それぞれ３０ｍｍ〜２００ｍｍ程度に設定
するのが強度面やコスト面から好ましい。また、遮光板
３ａ，３ｂの前後幅（奥行）は、配置間隔Ａ，Ｂの２．
０倍以上に設定することが望ましく、具体的には６０ｍ
ｍ〜５００ｍｍ程度が適当である。尚、遮光板の配置間
隔Ａ，Ｂは同一とする必要がなく、また遮光板３ａ，３
ｂの前後幅も同一とする必要はない。例えば、上方から
の太陽光の直射を受けやすい設置場所では、遮光板の配
置間隔をＡ＞Ｂとするとか、遮光板３ａの前後幅より遮
光板３ｂの前後幅を長くするなどして、遮光作用がより
効果的に発揮されるように設定すればよいのである。As shown in FIG. 12, the vertical gaps A between the light-shielding grids 3a and the horizontal gaps B between the light-shielding plates 3b of the light-shielding grid 3 are set to about 30 mm to 200 mm. It is preferable from the viewpoint of cost. The front-back width (depth) of the light-shielding plates 3a and 3b is 2.
It is desirable to set it to 0 times or more, specifically 60 m
About m to 500 mm is suitable. It is not necessary that the light-shielding plate arrangement intervals A and B be the same, and the light-shielding plates 3a and 3a
The front and rear widths of b do not have to be the same. For example, in an installation place where it is likely to receive direct sunlight from above, the light-shielding plate arrangement interval is set to A> B, or the front-rear width of the light-shielding plate 3b is made longer than the front-rear width of the light-shielding plate 3a. It may be set so that the action is exerted more effectively.
【００２８】また、遮光板３ａ，３ｂの板厚ｔは、表示
体２の表示面２ａに映し出される画像を遮らないように
できるだけ薄いことが好ましく、少なくとも遮光板３
ａ，３ｂの配置間隔Ａ，Ｂの２０分の１以下、できれば
１００分の１以下の厚さであることが望まれる。即ち、
具体的には０．３ｍｍ〜１．２ｍｍ程度の厚さが適当で
あり、実施例では厚さｔが０．５ｍｍの鉄板を使用して
いる。Further, it is preferable that the plate thickness t of the light shielding plates 3a and 3b is as thin as possible so as not to block the image displayed on the display surface 2a of the display body 2, and at least the light shielding plate 3 is formed.
It is desired that the thickness is 1/20 or less of the arrangement intervals A and B of a and 3b, and preferably 1/100 or less. That is,
Specifically, a thickness of about 0.3 mm to 1.2 mm is suitable, and in the embodiment, an iron plate having a thickness t of 0.5 mm is used.
【００２９】このような遮光用格子３は、表示体２の表
示面２ａの前に所定のギャップをあけて配置され、格子
両側端の縦の遮光板３ａを筐体１の両側の側板１ａに回
動自在に軸支すると共に、これらの遮光板３ａ及び側板
１ａを上下２箇所で仮止めして、筐体１の内側に取付け
られている。即ち、図３に示すように、筐体１の側板１
ａの中央部と格子両側端の遮光板３ａの中央部にボルト
挿通孔をそれぞれ穿孔し、ボルト５ａを側板１ａの外側
から挿通して遮光板３ａの内側からナット５ｂで固定す
ることにより、このボルト５ａを支軸として遮光用格子
３が前後に回動できるように取付けられている。そし
て、筐体側板１ａの上部と下部には、図４に示すように
ボルト挿通孔を穿孔すると共にナット６ｂを側板１ａの
内側に溶接し、仮止用のボルト６ａを該ナット６ｂに螺
挿して、該ボルト６ａの先端で格子両側端の遮光板３ａ
を押圧することにより、遮光用格子３が回動しないよう
に仮止めしている。従って、この仮止用のボルト６ａを
緩めて遮光用格子３を回動させながら所望の角度となる
ように前後に傾斜させ、その状態で仮止用のボルト６ａ
を締め込むと、簡単に遮光用格子３の傾斜角を調整でき
るようになっている。この遮光用格子３は、後述するよ
うに表示体２の表示面２ａに対して±５°の範囲で前後
に傾斜させることができれば充分であり、従って、遮光
用格子３が前後に±５°で傾斜できるように表示面２ａ
と遮光用格子３の間のギャップを設定すればよい。Such a light-shielding grid 3 is arranged in front of the display surface 2a of the display body 2 with a predetermined gap, and vertical light-shielding plates 3a at both ends of the grid are provided on the side plates 1a on both sides of the housing 1. The light-shielding plate 3a and the side plate 1a are rotatably supported and temporarily fixed at upper and lower two places, and are mounted inside the housing 1. That is, as shown in FIG. 3, the side plate 1 of the housing 1
By forming bolt insertion holes in the central portion of a and the central portions of the shading plates 3a at both ends of the lattice, respectively, and inserting the bolts 5a from the outside of the side plate 1a and fixing the bolts 5a from the inside of the shading plate 3a with nuts 5b, The light-shielding grid 3 is attached to the bolt 5a as a pivot so as to be rotatable back and forth. Then, as shown in FIG. 4, bolt insertion holes are drilled in the upper and lower parts of the housing side plate 1a, a nut 6b is welded to the inside of the side plate 1a, and a temporary fixing bolt 6a is screwed into the nut 6b. The light-shielding plates 3a at both ends of the grid at the tip of the bolt 6a.
By pressing, the light shielding grid 3 is temporarily fixed so as not to rotate. Therefore, the temporary fixing bolt 6a is loosened and the light shielding grid 3 is rotated and tilted back and forth to a desired angle, and in that state the temporary fixing bolt 6a is rotated.
By tightening, the inclination angle of the light-shielding grating 3 can be easily adjusted. It is sufficient that the light-shielding grid 3 can be tilted back and forth within a range of ± 5 ° with respect to the display surface 2a of the display body 2 as will be described later. Display surface 2a so that it can be tilted at
It suffices to set the gap between the light shielding grating 3 and the light shielding grating 3.
【００３０】以上のような遮光用格子付き表示装置は、
打撃練習場のピッチングマシーン１３の近傍に設置さ
れ、図６に示すように、遮光用格子付き表示装置の設置
面Ｇ1と打席の地面Ｇ2 がほぼ等しい高さの場合は、遮
光用格子３が表示体２の表示面２ａと平行、つまり表示
面２ａに対する傾斜角が０°で設置面Ｇ1 に対して垂直
となるようにセッティングされる。そして、この装置の
正面前方約１５〜２０ｍ（正式には６０フィート，即ち
およそ１８．３ｍ）先の打席に立った打者は、遮光用格
子３の各升目を通して表示体２の表示面２ａに映し出さ
れた投球動作の画像を見ながら打撃練習を行う。このと
き、左、右、上、下の各斜め前方から表示面２ａへ入射
する外光は遮光用格子３の縦横の遮光板３ａ，３ｂによ
って遮断され、周囲から入射する外光も筐体１によって
遮断されるため、表示画像のコントラストが改善されて
見易くなり、低輝度で安価な表示体２を用いても視認性
が向上する。しかも、正面以外からは、これらの遮光板
３ａ，３ｂが邪魔になって画像が見えにくいので、隣接
する他の打席の表示装置の画像に影響されるようなこと
もなくなる。The display device with the light-shielding grid as described above is
It is installed near the pitching machine 13 in the batting practice area, and as shown in FIG. 6, when the installation surface G1 of the display device with a light-shielding grid and the ground G2 at the bat are almost at the same height, the light-shielding grid 3 is displayed. The body 2 is set so as to be parallel to the display surface 2a, that is, the inclination angle with respect to the display surface 2a is 0 ° and is perpendicular to the installation surface G1. Then, a batter standing at the bat at about 15 to 20 m (formally 60 feet, that is, about 18.3 m) in front of the device is projected on the display surface 2a of the display body 2 through each square of the light shielding grid 3. Practice batting while looking at the image of the throwing action. At this time, external light entering the display surface 2a from the left, right, upper, and lower diagonal fronts is blocked by the vertical and horizontal light-shielding plates 3a and 3b of the light-shielding grating 3, and external light incident from the surroundings is also included in the housing 1. Since it is blocked by the display, the contrast of the display image is improved to make it easier to see, and the visibility is improved even when using the low-luminance and inexpensive display body 2. In addition, since the light-shielding plates 3a and 3b are in the way from the front side and the image is hard to see, it is not affected by the image on the display device at another adjacent bat.
【００３１】特に、遮光板３ａ，３ｂの板面及び筐体１
の表面をそれぞれ光無反射面にしてあると、外光が吸収
されて反射光が殆ど目に入らなくなり、また遮光板３
ａ，３ｂの板厚ｔを配置間隔Ａ，Ｂの２０分の１以下に
してあると、表示面２ａに映し出される画像が遮光板３
ａ，３ｂの板厚によって僅かに遮られるだけとなり、更
に遮光板３ａ，３ｂの前後幅（奥行）を配置間隔Ａ，Ｂ
の２．０倍以上に設定してあると、外光の遮断性が顕著
に向上すると共に表示面２ａの視野角も狭くなる。従っ
て、これらの場合は視認性がより一層向上し、隣の打席
の表示装置に映し出される画像も殆ど目に入らなくな
る。Particularly, the plate surfaces of the light shielding plates 3a and 3b and the housing 1
If each of the surfaces is a non-reflecting surface, the external light is absorbed and the reflected light hardly enters the eyes.
When the plate thickness t of a and 3b is set to 1/20 or less of the arrangement interval A and B, the image displayed on the display surface 2a is the light shielding plate 3.
It is only slightly blocked by the plate thicknesses of a and 3b, and the front and rear widths (depths) of the light blocking plates 3a and 3b are arranged at intervals A and B.
If set to 2.0 times or more, the shielding property against external light is significantly improved and the viewing angle of the display surface 2a is narrowed. Therefore, in these cases, the visibility is further improved, and the image displayed on the display device at the adjacent bat is almost invisible.
【００３２】一方、打撃練習場によっては、図７や図８
に示すように、遮光用格子付き表示装置の設置面Ｇ1 よ
りも打席の地面Ｇ2 の方が高くなっている場合や、逆に
低くなっている場合がある。このような場合には、打者
の視点Ｐが高低差ｈ1 ，ｈ2の分だけ上下に移動するの
で、遮光用格子３が図６のように表示面２ａと平行の状
態では、横方向の各遮光板３ｂの上面又は下面まで見え
ることになり、その分だけ表示画像の阻害される比率が
増大する。On the other hand, depending on the batting practice range, the driving conditions shown in FIGS.
As shown in, the ground G2 at the bat may be higher than the installation surface G1 of the display device with the light-shielding grid, or conversely it may be lower. In such a case, the batter's viewpoint P moves up and down by the height difference h1 and h2. Therefore, when the light shielding grating 3 is parallel to the display surface 2a as shown in FIG. The upper surface or the lower surface of the plate 3b can be seen, and the obstruction ratio of the display image increases accordingly.
【００３３】そこで、図７に示すように視点Ｐが上方に
ずれた場合には、仮止用のボルト６ａを緩めて遮光用格
子３を回動させ、その視点Ｐの方向に対して遮光用格子
３が直角となるように後側に傾斜させて仮止用のボルト
６ａを締め込むことにより、遮光用格子３の角度調整を
行う。また、図８のように視点Ｐが下方にずれた場合
は、遮光用格子３を逆に回動させ、その視点Ｐの方向に
対して遮光用格子３が直角となるように前側に傾斜させ
て角度調整を行う。このように遮光用格子３の傾斜角を
調整すると、視点Ｐが上下いずれの方に移動した場合で
も、遮光用格子３の真正面に視点Ｐが位置することにな
るので、横方向の各遮光板３ｂによる表示画像の阻害比
率が低下し、視認性が低下するのを防止することができ
る。Therefore, when the viewpoint P is displaced upward as shown in FIG. 7, the temporary fixing bolt 6a is loosened to rotate the light-shielding grid 3, and the light-shielding lattice 3 is rotated in the direction of the viewpoint P. The angle of the light-shielding grating 3 is adjusted by inclining the grating 3 to the right side and tightening the temporary fixing bolts 6a. Further, when the viewpoint P is displaced downward as shown in FIG. 8, the light-shielding grating 3 is rotated in the opposite direction and tilted forward so that the light-shielding grating 3 is at a right angle to the direction of the viewpoint P. To adjust the angle. When the tilt angle of the light-shielding grid 3 is adjusted in this manner, the viewpoint P is located directly in front of the light-shielding grid 3 regardless of whether the viewpoint P moves up or down. It is possible to prevent the display image from being hindered by the reduction ratio of the display image due to 3b.
【００３４】個々の設置条件や使用条件の差異によって
生じる表示装置の設置面Ｇ1 と打席地面Ｇ2 の高低差ｈ
1，ｈ2等による上下方向の視点のずれは、実用上、数十
ｃｍ程度であり、これに対して表示装置から打者の視点
Ｐまでの水平距離は約１５〜２０ｍであるから、視点Ｐ
が上下にずれる角度α1，α2は大きくても５°までであ
る。従って、既述したように遮光用格子３を表示体の表
示面２ａに対して±５°の範囲内で前後に傾斜できるよ
うに取付けてあれば、視点Ｐの方向に対して遮光用格子
３が必ず直角となるように確実に角度調整を行うことが
できる。The height difference h between the installation surface G1 of the display device and the batted ground G2 caused by the difference in individual installation conditions and use conditions.
The vertical shift of the viewpoint due to 1, h2, etc. is practically about several tens of centimeters, while the horizontal distance from the display device to the batter's viewpoint P is about 15 to 20 m.
The angles α1 and α2 for shifting up and down are up to 5 °. Therefore, as described above, if the light-shielding grid 3 is attached so as to be tiltable back and forth within the range of ± 5 ° with respect to the display surface 2a of the display body, the light-shielding grid 3 with respect to the direction of the viewpoint P is displayed. The angle can be surely adjusted so that is always at a right angle.
【００３５】上記のように、本発明の装置は、個々の設
置条件により視点Ｐが上下にずれた場合でも、簡単な作
業により遮光用格子３の傾斜角を調整するだけで良好な
視認性を確保できるため、従来のように装置全体を傾斜
させて設置したり、角度調整用のスペーサを装置の下側
に挿入するなどの面倒な作業が一切不要となり、また、
重心が偏ることもないので装置が倒れる心配がなく安全
である。As described above, the apparatus of the present invention provides good visibility even if the viewpoint P is vertically displaced due to individual installation conditions, by simply adjusting the inclination angle of the light-shielding grating 3. Since it can be secured, it does not require any troublesome work such as installing the entire device at a slant as in the past and inserting a spacer for adjusting the angle under the device.
Since the center of gravity is not biased, there is no risk of the device falling over and it is safe.
【００３６】尚、視点Ｐが左右にずれている場合は、可
動台４を水平に少し回して表示体２の表示面２ａがその
視点の方を向くようにセットすればよい。When the viewpoint P is shifted to the left or right, the movable table 4 may be turned slightly horizontally so that the display surface 2a of the display body 2 faces the viewpoint.
【００３７】ところで、上記実施例の遮光用格子３は、
図６に示すように表示体２の表示面２ａに対して平行に
取付けられた状態では、横方向の各遮光板３ｂが全て水
平になっている。従って、正面の所定の視点Ｐから見る
と、視点Ｐの高さＨ（通常は１．５ｍ程度）と同じ高さ
Ｈの遮光板３ｂは板厚しか見えないが、その上下の遮光
板３ｂは視点Ｐがわずかに斜め下方又は斜め上方となる
ために、板厚に加えてその板面も見えるようになり、遮
光板３ｂが上下に離れるほど、この板面の見える面積が
拡大して、表示面２ａの視認できる面積が減少する。By the way, the light-shielding grating 3 of the above embodiment is
As shown in FIG. 6, when the display body 2 is mounted parallel to the display surface 2a, all of the horizontal light-shielding plates 3b are horizontal. Therefore, when viewed from a predetermined viewpoint P on the front side, only the thickness of the light shielding plate 3b having the same height H as the height H of the viewpoint P (usually about 1.5 m) can be seen, but the light shielding plates 3b above and below the light shielding plate 3b can be seen. Since the viewpoint P is slightly obliquely downward or obliquely upward, the plate surface can be seen in addition to the plate thickness. As the light-shielding plate 3b is vertically separated, the visible area of this plate surface is enlarged and displayed. The visible area of the surface 2a is reduced.
【００３８】例えば、打者の視点Ｐが装置の２０ｍ前方
で地面Ｇ2 から１．５ｍの高さにあるとして、この視点
Ｐから３０ｃｍ上方の遮光板３ｂを見ると、図１１に示
すように、遮光板３ａの前後幅が２００ｍｍである場合
には、 tan θ＝０．３ｍ／２０ｍ＝３ｍｍ／２００ｍｍ の関係が成立して（この場合θ＝０．８６°）、打者か
らは遮光板３ａの下面が３ｍｍ分だけ見えるようにな
る。For example, assuming that the batter's viewpoint P is 20 m ahead of the device and at a height of 1.5 m from the ground G2, looking at the shading plate 3b 30 cm above this viewpoint P, as shown in FIG. When the front-rear width of the plate 3a is 200 mm, the relationship of tan θ = 0.3 m / 20 m = 3 mm / 200 mm is established (θ = 0.86 ° in this case), and the batter hits the bottom surface of the light-shielding plate 3a. Is visible only for 3 mm.
【００３９】従って、この場合には、図１２に示すよう
に、遮光用格子３の１つの升目の全面積Ｓ（Ｓ＝Ａ×
Ｂ）のうち遮光板３ｂによって遮られる面積ＳG は、板
面の見える幅をｄ（３ｍｍ）とすると、 ＳG ＝（Ａ＋Ｂ−ｔ）×ｔ＋（Ｂ−ｔ）×ｄ となるので、例えばＡ＝Ｂ＝１００ｍｍ，ｔ＝０．５ｍ
ｍ（ｔはＡ，Ｂの２００分の１）とすると、上記全面積
Ｓは１００００平方ｍｍに対してＳG は約４００平方ｍ
ｍ（減算の項を省略）となり、全面積Ｓの約２５分の１
の面積が遮光板３ａ，３ｂによって遮られることにな
る。即ち、表示面２ａの阻害される割合は４％となる。Therefore, in this case, as shown in FIG. 12, the total area S (S = A ×) of one square of the light shielding grating 3
The area SG blocked by the light shielding plate 3b in B) is SG = (A + B−t) × t + (B−t) × d when the width of the plate surface is d (3 mm). B = 100 mm, t = 0.5 m
If m (t is 1/200 of A and B), the total area S is 10,000 square mm and SG is about 400 square m.
m (the term of subtraction is omitted), which is about 1/25 of the total area S
Is blocked by the light shielding plates 3a and 3b. That is, the rate of obstruction of the display surface 2a is 4%.
【００４０】上記のことは、縦方向の各遮光板３ａが表
示面２ａに対して全て直角となっている場合でも同様で
あり、遮光板３ａが視点Ｐから左右に離れるほど、板面
の見える面積が増大して表示面の阻害比率が増大するこ
とになる。The above is the same when all the light shielding plates 3a in the vertical direction are at right angles to the display surface 2a, and as the light shielding plate 3a is separated from the viewpoint P to the left and right, the plate surface can be seen. The area increases and the obstruction ratio of the display surface increases.
【００４１】このような問題に対処するため、図９に示
す実施例の装置では、打者の視点Ｐが装置の２０ｍ前方
で地面Ｇ2 から１．５ｍの高さにあるものと特定し、遮
光用格子３の縦横の各遮光板３ａ，３ｂを前方に仮想延
長したときに上記の特定視点Ｐを通過するように、各遮
光板３ａ，３ｂを特定視点Ｐに向かって少しづつ傾斜さ
せた構成としている。かかる構成の遮光用格子３を用い
ると、特定視点Ｐから見たとき各遮光板３ａ，３ｂの板
厚しか見えなくなり、表示面２ａの阻害比率が最小とな
って表示画像が極めて見易くなる。In order to deal with such a problem, in the device of the embodiment shown in FIG. 9, it is specified that the batter's viewpoint P is at a height of 1.5 m from the ground G2 20 m in front of the device, and the light is blocked. As a configuration in which the light shielding plates 3a and 3b are gradually inclined toward the specific viewpoint P so as to pass through the specific viewpoint P when the vertical and horizontal light shielding plates 3a and 3b of the lattice 3 are virtually extended forward There is. When the light-shielding grid 3 having such a configuration is used, only the thickness of each of the light-shielding plates 3a and 3b can be seen when viewed from the specific viewpoint P, and the obstruction ratio of the display surface 2a is minimized, so that the display image is extremely easy to see.
【００４２】即ち、各遮光板３ａ，３ｂの板厚ｔしか見
えなくなると、図５に示すように、遮光用格子３の１つ
の升目の全面積Ｓ（Ｓ＝Ａ×Ｂ）のうち遮光板３ａ，３
ｂによって遮られる面積ＳG は、 ＳG＝Ａ×ｔ＋Ｂ×ｔ−ｔ×ｔ＝（Ａ＋Ｂ−ｔ）×ｔ となるので、例えばＡ＝Ｂ＝１００ｍｍ，ｔ＝０．５ｍ
ｍ（ｔはＡ，Ｂの２００分の１）とすると、全面積Ｓは
１００００平方ｍｍ，ＳGは約１００平方ｍｍ（減算の
項を省略）となり、全面積Ｓの約１００分の１の面積が
遮光板３ａ，３ｂによって遮られるだけとなる。即ち、
表示画面の１％が遮られるにすぎない。That is, when only the plate thickness t of each of the shading plates 3a and 3b becomes visible, as shown in FIG. 5, the shading plate out of the total area S (S = A × B) of one square of the shading grid 3 is shown. 3a, 3
The area SG blocked by b is SG = A * t + B * t-t * t = (A + B-t) * t, so for example A = B = 100 mm, t = 0.5 m
When m (t is 1/200 of A and B), the total area S is 10,000 square mm and SG is about 100 square mm (subtraction is omitted), which is about 1/100 of the total area S. Are only blocked by the light blocking plates 3a and 3b. That is,
Only 1% of the display screen is blocked.
【００４３】この表示画面の阻害比率は、１０％以下と
すれば実用上の支障は少ないが、２％程度以下とするの
が好ましい。If the inhibition ratio of the display screen is 10% or less, there is little trouble in practical use, but it is preferable that the inhibition ratio is about 2% or less.
【００４４】尚、上記の実施例は打撃練習場に設置され
る投球動作表示装置を例示したものであるから、視点Ｐ
が装置の２０ｍ前方で地面Ｇ2 から１．５ｍの高さにあ
るものと特定しているが、特定の視点Ｐをどこにおくか
は、表示装置の用途に応じた標準的な視点を考慮して決
定すればよい。Since the above embodiment is an example of the pitching motion display device installed in the batting practice field, the viewpoint P
Specifies that it is at a height of 1.5m from the ground G2 20m in front of the device, but where to place the specific viewpoint P is a standard viewpoint according to the use of the display device. Just decide.
【００４５】また、前記の実施例では、仮止用のボルト
６ａの先端で遮光用格子３を押圧して仮止めしている
が、仮止めの手段はこれに限定されるものではない。図
１３は他の仮止め手段を用いた実施例を示すもので、こ
の表示装置は、筐体１の両側板１ａの上部と下部に円弧
状のスリット１ｂ，１ｂを形成し、このスリットからボ
ルト６ａ，６ａを遮光用格子３の両側端の遮光板に挿通
して内側からナットで仮固定したものである。このよう
な表示装置も、ナットを緩めると、遮光用格子３をスリ
ット１ｂの長さ範囲内で前後に傾斜させて角度を調整す
ることができる。In the above embodiment, the light-shielding grid 3 is pressed by the tip of the temporary fixing bolt 6a to temporarily fix it, but the temporary fixing means is not limited to this. FIG. 13 shows an embodiment using another temporary fixing means. In this display device, arc-shaped slits 1b, 1b are formed in the upper and lower portions of both side plates 1a of the housing 1, and the bolts are formed from these slits. 6a and 6a are inserted through the light-shielding plates at both ends of the light-shielding grid 3 and temporarily fixed from inside by nuts. Also in such a display device, when the nut is loosened, the light shielding grid 3 can be tilted back and forth within the length range of the slit 1b to adjust the angle.
【００４６】以上、野球の打撃練習場に設置されて投球
動作を表示する遮光用格子付き表示装置を例にとって本
発明を説明したが、本発明は、ソフトボールの打撃練習
場やテニス練習場等で競技者ごとに画像を表示する表示
装置として同様に実施可能であること言うまでもない。The present invention has been described above by taking the display device with a light-shielding grid installed in a baseball batting practice field for displaying pitching motions as an example, but the present invention has been described as a softball batting practice field or a tennis practice field. It goes without saying that it can be similarly implemented as a display device that displays an image for each competitor.
【００４７】[0047]
【発明の効果】本発明の遮光用格子付き表示装置によれ
ば、打撃練習場のように周囲が明るい環境で投球動作等
を表示するために低輝度で安価な表示体を用いたとして
も、特定の打者等の狭い範囲を視点とするものに対して
のみ視認性の良い表示を行うことができるようになる。
また、設置場所の関係で表示面に対する視点の相対位置
関係が上下にずれた場合でも、装置全体を傾斜させるこ
となく遮光用格子のみを前後に傾斜させ、遮光用格子が
視点の方向に対して直角となるように調整するだけで、
表示画像の遮光用格子による阻害比率を小さく抑えて良
好な視認性を維持することができるので、従来のように
装置全体を傾斜させて設置したり、角度調整用のスペー
サを装置の下側に挟みこむなどの面倒な作業が不要とな
り、しかも装置の重心が偏らないので倒れる恐れがなく
安全である。According to the display device with a light-shielding grid of the present invention, even if a low-luminance and inexpensive display body is used to display a pitching motion in a bright environment such as a batting practice field, It is possible to perform a display with good visibility only for a specific batter or the like whose viewpoint is a narrow range.
Further, even if the relative positional relationship of the viewpoint with respect to the display surface is vertically shifted due to the installation location, only the light-shielding grid is tilted back and forth without tilting the entire apparatus, and the light-shielding grid is inclined with respect to the direction of the viewpoint. Just adjust it to a right angle,
Since it is possible to keep the good visibility by suppressing the obstruction ratio by the light-shielding grid of the display image, it is possible to install the device by tilting it as in the past, or install the angle adjustment spacer on the lower side of the device. There is no need for troublesome work such as pinching, and since the center of gravity of the device is not biased, there is no risk of falling and it is safe.
【００４８】特に、遮光用格子の縦横の遮光板を、前方
に仮想延長したとき特定の視点範囲を通過するように特
定の視点範囲に向かって少しずつ傾斜させたものは、表
示画像の遮光用格子による阻害比率が最小限となり、視
認性が極めて良好となる。そして、筐体を可動台に設置
したものは、一人でも装置の移動や回動を行うことがで
きる。更に、画面サイズの大きいＬＥＤドットマトリク
ス発光表示体を用いたものは、他の発光表示体に比して
本質的に輝度が高く明瞭な上に表示コントラストが顕著
に改善され、また、遮光用格子の遮光板の板面を光無反
射面としたものや、遮光板の板厚を遮光板配置間隔の２
０分の１以下の厚さにしたものや、遮光板の前後幅を遮
光板配置間隔の２．０倍以上にしたもの等は、視認性を
一層顕著に向上させることが可能となる。In particular, the vertical and horizontal light-shielding plates of the light-shielding grid, which are gradually inclined toward the specific viewpoint range so as to pass through the specific viewpoint range when virtually extended forward, are used for shielding the display image. The inhibition ratio by the lattice is minimized, and the visibility is extremely good. When the case is installed on the movable table, even one person can move or rotate the device. Further, the one using the LED dot matrix light emitting display body having a large screen size is essentially higher in brightness and clear than other light emitting display bodies, and the display contrast is remarkably improved. The light-shielding plate has a non-light-reflecting surface, or the thickness of the light-shielding plate is set to the light-shielding plate arrangement interval of 2
Visibility can be more remarkably improved when the thickness is 1/0 or less, the front-back width of the light-shielding plate is 2.0 times or more the light-shielding plate arrangement interval, or the like.
【図１】本発明の一実施例に係る遮光用格子付き表示装
置を示す斜視図である。FIG. 1 is a perspective view showing a display device with a light-shielding grid according to an embodiment of the present invention.
【図２】同装置の表示体の部分斜視図である。FIG. 2 is a partial perspective view of a display body of the device.
【図３】同装置の遮光用格子の軸支部分の断面図であ
る。FIG. 3 is a cross-sectional view of a shaft-supporting portion of a light-shielding grating of the same device.
【図４】同装置の遮光用格子の仮止め部分の断面図であ
る。FIG. 4 is a cross-sectional view of a temporary fixing portion of a light-shielding grid of the same device.
【図５】同装置の縦断面図である。FIG. 5 is a vertical sectional view of the device.
【図６】視点が所定の位置にある場合の同装置の断面図
である。FIG. 6 is a sectional view of the device when the viewpoint is at a predetermined position.
【図７】視点が上方に移動した場合の同装置の断面図で
ある。FIG. 7 is a cross-sectional view of the same device when the viewpoint moves upward.
【図８】視点が下方に移動した場合の同装置の断面図で
ある。FIG. 8 is a cross-sectional view of the device when the viewpoint moves downward.
【図９】本発明の他の実施例に係る遮光用格子付き表示
装置を示す縦断面図である。FIG. 9 is a vertical cross-sectional view showing a display device with a light-shielding grid according to another embodiment of the present invention.
【図１０】遮光用格子の一つの升目を示す部分正面図で
ある。FIG. 10 is a partial front view showing one square of the light shielding grid.
【図１１】一枚の遮光板について視点の移動の影響を説
明する側面図である。FIG. 11 is a side view illustrating the influence of movement of the viewpoint on one light shielding plate.
【図１２】遮光用格子の一つの升目について視点の移動
の影響を説明する部分正面図である。FIG. 12 is a partial front view for explaining the influence of movement of the viewpoint on one square of the light-shielding grid.
【図１３】本発明の更に他の実施例に係る遮光用格子付
き表示装置を示す側面図である。FIG. 13 is a side view showing a display device with a light-shielding grid according to still another embodiment of the present invention.
【図１４】打撃練習場での表示装置の設置例を示す説明
図である。FIG. 14 is an explanatory diagram showing an installation example of a display device in a batting practice field.
１ 筐体 １ａ 側板 ２ 表示体 ２ａ 表示面 ３ 遮光用格子 ３ａ 縦の遮光板 ３ｂ 横の遮光板 ４ 可動台 ４ａ キャスター ５ａ 支軸となるボルト ６ａ 仮止用のボルト ｔ 遮光板の板厚 Ａ 横の遮光板の配置間隔 Ｂ 縦の遮光板の配置間隔 Ｐ 視点 1 Case 1a Side plate 2 Display body 2a Display surface 3 Light-shielding grid 3a Vertical light-shielding plate 3b Horizontal light-shielding plate 4 Movable base 4a Caster 5a Spindle bolt 6a Temporary fixing bolt t Light-shielding plate thickness A Horizontal Arrangement interval of light-shielding plate B Vertical arrangement interval of light-shielding plate P Viewpoint
Claims (9)
けると共に、多数の遮光板を縦横に交叉させて組立てた
遮光用格子を表示体の表示面の前に配置し、この遮光用
格子を表示面に対して所定の角度範囲内で前後に傾斜で
きるように筐体の内側に取付けたことを特徴とする遮光
用格子付き表示装置。1. A light-shielding grid, which is assembled by assembling a large number of light-shielding plates in a vertical and horizontal manner, is arranged in front of the display surface of the display body while the display body is mounted inside a housing having an opening at the front. A display device with a light-shielding grating, wherein the grating is attached to the inside of the housing so that the grating can be tilted back and forth within a predetermined angle range with respect to the display surface.
°の範囲内で前後に傾斜できるように取付けたことを特
徴とする請求項１に記載の遮光用格子付き表示装置。2. A light-shielding grating is ± 5 with respect to the display surface of the display body.
The display device with a light-shielding grid according to claim 1, wherein the display device is attached so as to be tiltable back and forth within a range of °.
の側板に回動自在に軸支し、これらの遮光板と側板を仮
止具で仮止めしたことを特徴とする請求項１又は請求項
２に記載の遮光用格子付き表示装置。3. The light-shielding plates at both ends of the light-shielding grid are rotatably supported by the side plates on both sides of the housing, and the light-shielding plates and the side plates are temporarily fixed by a temporary fastener. The display device with a light-shielding grid according to claim 1 or 2.
な状態にあるとき、遮光用格子の縦横の各遮光板を前方
に仮想延長すると所定の視点範囲を通過するように、各
遮光板を所定の視点範囲に向かって少しづつ傾斜させた
ことを特徴とする請求項１ないし請求項３のいずれかに
記載の遮光用格子付き表示装置。4. When the light-shielding grid is parallel to the display surface of the display, each of the vertical and horizontal light-shielding plates of the light-shielding grid is virtually extended forward so as to pass through a predetermined viewpoint range. The display device with a light-shielding grid according to any one of claims 1 to 3, wherein the light-shielding plate is gradually inclined toward a predetermined viewpoint range.
置したことを特徴とする請求項１ないし請求項４のいず
れかに記載の遮光用格子付き表示装置。5. The display device with a light-shielding grid according to claim 1, wherein the housing is installed on a movable table having casters.
体であって、かつ、表示面のサイズが高さ１ｍ×横幅
０．４ｍ以上の大画面であることを特徴とする請求項１
ないし請求項５のいずれかに記載の遮光用格子付き表示
装置。6. The display body is an LED dot matrix light emitting display body, and the display surface is a large screen having a size of height 1 m × width 0.4 m or more.
The display device with a light-shielding grid according to claim 5.
としたことを特徴とする請求項１ないし請求項６のいず
れかに記載の遮光用格子付き表示装置。7. The display device with a light-shielding grating according to claim 1, wherein the surface of each light-shielding plate of the light-shielding grating is a non-light-reflecting surface.
横方向の遮光板配置間隔の２０分の１以下にしたことを
特徴とする請求項１ないし請求項７のいずれかに記載の
遮光用格子付き表示装置。8. The light-shielding plate of each of the light-shielding grids has a plate thickness set to 1/20 or less of a vertical or horizontal light-shielding plate arrangement interval. The display device with a light-shielding grid as described above.
は横方向の遮光板配置間隔の２．０倍以上にしたことを
特徴とする請求項１ないし請求項８のいずれかに記載の
遮光用格子付き表示装置。9. The front-back width of each light-shielding plate of the light-shielding grid is set to 2.0 times or more the vertical or horizontal light-shielding plate arrangement interval, according to any one of claims 1 to 8. The display device with a light-shielding grid as described above.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10796794A JP3227591B2 (en) | 1994-04-21 | 1994-04-21 | Display device with shading grid |
| KR1019950005312A KR100342081B1 (en) | 1994-03-18 | 1995-03-15 | Displaying apparatus with light-shielding grating |
| US08/405,896 US5647152A (en) | 1994-03-18 | 1995-03-17 | Displaying apparatus with light-shielding grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10796794A JP3227591B2 (en) | 1994-04-21 | 1994-04-21 | Display device with shading grid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07295482A true JPH07295482A (en) | 1995-11-10 |
| JP3227591B2 JP3227591B2 (en) | 2001-11-12 |
Family
ID=14472614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10796794A Expired - Fee Related JP3227591B2 (en) | 1994-03-18 | 1994-04-21 | Display device with shading grid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3227591B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006298560A (en) * | 2005-04-20 | 2006-11-02 | Sekisui Jushi Co Ltd | Picking support device |
| WO2017221914A1 (en) * | 2016-06-24 | 2017-12-28 | 日本精機株式会社 | Blind spot assist device |
| CN110985872A (en) * | 2019-12-23 | 2020-04-10 | 中南大学 | Part with lattice structure, lattice structure and lattice cell element |
-
1994
- 1994-04-21 JP JP10796794A patent/JP3227591B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006298560A (en) * | 2005-04-20 | 2006-11-02 | Sekisui Jushi Co Ltd | Picking support device |
| WO2017221914A1 (en) * | 2016-06-24 | 2017-12-28 | 日本精機株式会社 | Blind spot assist device |
| JPWO2017221914A1 (en) * | 2016-06-24 | 2019-04-11 | 日本精機株式会社 | Blind spot assist device |
| CN110985872A (en) * | 2019-12-23 | 2020-04-10 | 中南大学 | Part with lattice structure, lattice structure and lattice cell element |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3227591B2 (en) | 2001-11-12 |
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