JP6182716B2 - Display device - Google Patents

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JP6182716B2
JP6182716B2 JP2014090210A JP2014090210A JP6182716B2 JP 6182716 B2 JP6182716 B2 JP 6182716B2 JP 2014090210 A JP2014090210 A JP 2014090210A JP 2014090210 A JP2014090210 A JP 2014090210A JP 6182716 B2 JP6182716 B2 JP 6182716B2
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light
light sources
display device
partition
partition wall
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JP2015210317A (en
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林　伸昭
伸昭 林
橋本　忠
忠 橋本
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クロイ電機株式会社
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/16—Advertising or display means not otherwise provided for using special optical effects involving the use of mirrors
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F27/00—Combined visual and audible advertising or displaying, e.g. for public address
    • G09F27/008—Sun shades, shades, hoods or louvres on electronic displays to minimise the effect of direct sun light on the display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
    • G09F2013/222—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent with LEDs

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Description

この発明は、複数個の光源から照射される光によって画像や映像を表示するディスプレイ装置に関する。   The present invention relates to a display device that displays an image or video by light emitted from a plurality of light sources.

近年、照明装置では、少電力化の要請により、発光ダイオード（ＬＥＤ）が光源に多用されるようになり、それぞれが点光源である複数個のＬＥＤを格子状に配置している。光源の光を前面に向かって照射して照明光を得る照明装置は、所定の範囲の全域にできるだけ均一な光量の光を配光することが要求される。   2. Description of the Related Art In recent years, light emitting diodes (LEDs) have been frequently used as light sources due to demands for reducing power consumption in lighting devices, and a plurality of LEDs, each of which is a point light source, are arranged in a grid. An illuminating device that obtains illumination light by irradiating light from a light source toward the front surface is required to distribute as much light as possible throughout the predetermined range.

このため、照明装置には、各ＬＥＤの光の配光方向を制御する種々の反射板が備えられている（例えば、特許文献１参照。）。反射板は、各ＬＥＤの側方の周囲を包囲するように配置され、各ＬＥＤから照射された光を前面側に反射するように傾斜した反射率の高い反射面を備えている。各ＬＥＤから照射された光は、直接、又は反射板の反射面で反射して照明装置の前面側に配光される。   For this reason, the illuminating device is provided with various reflectors that control the light distribution direction of the light from each LED (see, for example, Patent Document 1). The reflection plate is disposed so as to surround the side periphery of each LED, and includes a reflective surface having a high reflectance that is inclined so as to reflect light emitted from each LED to the front side. The light emitted from each LED is directly or directly reflected by the reflecting surface of the reflecting plate and distributed to the front side of the lighting device.

特開２０１３−０９８０８３号公報JP 2013-098083 A

しかし、従来の照明装置では、反射板の反射面は、各ＬＥＤから照射された光を全面においてできるだけ均一な光量で反射するように構成されており、直接視認した場合には全面が単一の階調の明るさに見えることになる。   However, in the conventional illuminating device, the reflecting surface of the reflecting plate is configured to reflect the light emitted from each LED with a uniform amount of light as much as possible on the entire surface. It looks like the brightness of the gradation.

この発明の目的は、複数個の光源のそれぞれから照射された光に階調性を与えることができ、直接視認した場合に奥行感を醸し出すことで表現機能を向上させることができるディスプレイ装置を提供することにある。   An object of the present invention is to provide a display device capable of giving gradation to the light emitted from each of a plurality of light sources and improving the expression function by creating a sense of depth when directly viewed. There is to do.

この発明のディスプレイ装置は、複数個の光源、隔壁を備えている。複数個の光源は、配光方向を前面側にして同一平面内に配置されている。隔壁は、平面の法線方向に沿って一定の長さを有し、複数個の光源のそれぞれを互いに隔離する。隔壁の表面は、複数個の光源のそれぞれから照射された光を法線方向に沿って平面から離れるにしたがって徐々に光量が低下するように階調性を与えた状態で反射及び拡散させる。   The display device of the present invention includes a plurality of light sources and partitions. The plurality of light sources are arranged in the same plane with the light distribution direction on the front side. The partition wall has a certain length along the normal direction of the plane, and isolates each of the plurality of light sources from each other. The surface of the partition wall reflects and diffuses the light emitted from each of the plurality of light sources in a state of gradation so that the amount of light gradually decreases as the distance from the plane increases along the normal direction.

複数個の光源のそれぞれから照射された光は、平面の法線方向に沿って配光されるとともに隔壁の表面に向けて配光され、法線方向に沿って平面から離れるにしたがって徐々に光量を低下させた状態で反射及び拡散する。複数個の光源のそれぞれから照射された光が、隔壁によって立体的な奥行感を与えられた状態で視認される。   The light emitted from each of the plurality of light sources is distributed along the normal direction of the plane, is distributed toward the surface of the partition wall, and the amount of light gradually increases as it moves away from the plane along the normal direction. Reflected and diffused in a reduced state. The light emitted from each of the plurality of light sources is visually recognized in a state where a stereoscopic depth is given by the partition walls.

複数個の光源は、平面上で互いに直交する２方向の格子軸からなる仮想の二次元格子の各格子点上に配置され、隔壁は、２方向の格子軸のそれぞれに平行に配置された帯板で構成することが好ましい。矩形の格子状の隔壁の内面のそれぞれにおいて、複数個の光源のそれぞれから照射された光に立体的な奥行感を与えることができる。   The plurality of light sources are arranged on each lattice point of a virtual two-dimensional lattice composed of two-direction lattice axes orthogonal to each other on a plane, and the partition is arranged in parallel to each of the two-direction lattice axes. It is preferable to comprise with a board. In each of the inner surfaces of the rectangular grid-like partition walls, a three-dimensional depth feeling can be given to the light emitted from each of the plurality of light sources.

この発明によれば、複数個の光源のそれぞれから照射された光に階調性を与えることができ、直接視認した場合に奥行感を醸し出すことで表現機能を向上させることができる。   According to the present invention, gradation can be imparted to the light emitted from each of the plurality of light sources, and the expression function can be improved by creating a sense of depth when viewed directly.

本発明の第１の実施形態に係るディスプレイ装置の外観図である。1 is an external view of a display device according to a first embodiment of the present invention. 同ディスプレイ装置における複数個の光源の配置状態を示す図である。It is a figure which shows the arrangement | positioning state of the several light source in the display apparatus. （Ａ）は同ディスプレイ装置の視認状態を示す側面断面図であり、（Ｂ）はその拡大図である。(A) is side sectional drawing which shows the visual recognition state of the display apparatus, (B) is the enlarged view. 本発明の第２の実施形態に係るディスプレイ装置の外観図である。It is an external view of the display apparatus which concerns on the 2nd Embodiment of this invention. （Ａ）及び（Ｂ）は、それぞれ本発明の第３及び第４の実施形態に係るディスプレイ装置の部分断面図である。(A) And (B) is a fragmentary sectional view of the display apparatus which concerns on the 3rd and 4th embodiment of this invention, respectively. （Ａ）及び（Ｂ）は、本発明の他の実施形態に係るディスプレイ装置に備えられる隔壁の正面図である。(A) And (B) is a front view of the partition with which the display apparatus which concerns on other embodiment of this invention is equipped.

以下に、この発明の実施形態に係るディスプレイ装置について図面を参照しつつ説明する。   A display device according to an embodiment of the present invention will be described below with reference to the drawings.

図１に示すように、本発明の第１の実施形態に係るディスプレイ装置１０は、取付板１及び隔壁２を備えている。取付板１は、所定の面積を有する平板である。隔壁２は、取付板１の前面側に配置され、平面上で互いに直交する２方向の格子軸のそれぞれに平行な複数の帯板２１，２２を組み合わせて形成された複数の矩形断面の小室２３からなる面格子である。帯板２１，２２は、木材等の表面の反射率の低い材料で構成されている。隔壁２は、背面を取付板１の前面に密着させることもでき、互いの間に所定の間隔を設けることもできる。帯板２１，２２は、少なくとも小室２３の内側に位置する面が低反射率であればよく、小室２３の内側に位置する面に粗面化処理やシートの貼付処理を施すことで、木材等以外の反射率の高い材料で構成することもできる。   As shown in FIG. 1, the display device 10 according to the first embodiment of the present invention includes a mounting plate 1 and a partition wall 2. The mounting plate 1 is a flat plate having a predetermined area. The partition wall 2 is disposed on the front surface side of the mounting plate 1 and has a plurality of rectangular cross-section chambers 23 formed by combining a plurality of strip plates 21 and 22 parallel to each of two lattice axes perpendicular to each other on a plane. Is a plane lattice. The band plates 21 and 22 are made of a material having a low surface reflectance such as wood. The partition wall 2 can also have a back surface closely attached to the front surface of the mounting plate 1, and can also provide a predetermined space | interval between each other. The band plates 21 and 22 only need to have a low reflectance at least on the surface located inside the small chamber 23, and by performing roughening treatment or sheet pasting treatment on the surface located inside the small chamber 23, wood or the like It can also be made of a material with high reflectance other than the above.

図２に示すように、取付板１の前面には、複数個のＬＥＤ光源１１が、帯板２１，２２のそれぞれに平行な２方向の格子軸からなる仮想の二次元格子の各格子点上に配置されている。ＬＥＤ光源１１が格子点に配置される二次元格子は、隔壁２の面格子に対して２つの格子軸方向のそれぞれに沿って変位している。複数個のＬＥＤ光源１１のそれぞれは、基板に実装されたＬＥＤ素子の前面側にレンズを備えており、ＬＥＤ素子の発光を基板の前面側の略半球状の範囲に照射する。ＬＥＤ光源１１は、本発明の光源に対応する。本発明の複数個の光源のそれぞれは、必ずしも単一のＬＥＤ光源１１で構成する必要はなく、複数個のＬＥＤ光源１１で構成することもでき、他の発光部品を用いることもできる。   As shown in FIG. 2, on the front surface of the mounting plate 1, a plurality of LED light sources 11 are placed on each lattice point of a virtual two-dimensional lattice having lattice axes in two directions parallel to each of the strip plates 21 and 22. Is arranged. The two-dimensional lattice in which the LED light source 11 is arranged at the lattice point is displaced along each of the two lattice axis directions with respect to the surface lattice of the partition wall 2. Each of the plurality of LED light sources 11 includes a lens on the front side of the LED element mounted on the substrate, and irradiates light emitted from the LED element in a substantially hemispherical range on the front side of the substrate. The LED light source 11 corresponds to the light source of the present invention. Each of the plurality of light sources of the present invention does not necessarily need to be configured by a single LED light source 11, and may be configured by a plurality of LED light sources 11, and other light emitting components may be used.

図３（Ａ）に示すように、ディスプレイ装置１０において複数個のＬＥＤ光源１１は、それぞれ取付板１の前面方向について隔壁２の複数の小室２３の中央部に位置する。なお、複数個のＬＥＤ光源１１は、それぞれが個別の小室２３内に位置することを条件に、取付板１の前面方向について複数の小室２３の中央部から変位した位置に配置することもできる。   As shown in FIG. 3A, in the display device 10, the plurality of LED light sources 11 are positioned at the center of the plurality of small chambers 23 of the partition wall 2 in the front direction of the mounting plate 1. The plurality of LED light sources 11 can also be arranged at positions displaced from the center of the plurality of small chambers 23 in the front direction of the mounting plate 1 on the condition that each of the LED light sources 11 is located in the individual small chamber 23.

隔壁２は、複数個のＬＥＤ光源１１のそれぞれを互いに隔離する。複数個のＬＥＤ光源１１を点灯した状態で、ディスプレイ装置１０を前面側から視認すると、正面視において目の位置に近いＬＥＤ光源１１から照射された光は直接視認されるが、正面視において目の位置から離れたＬＥＤ光源１１から照射された光は各小室２３の内面２３Ａで反射した後に視認される。   The partition wall 2 isolates each of the plurality of LED light sources 11 from each other. When the display device 10 is viewed from the front side with the plurality of LED light sources 11 turned on, the light emitted from the LED light source 11 close to the eye position in the front view is directly visible, but in the front view The light emitted from the LED light source 11 away from the position is visually recognized after being reflected by the inner surface 23A of each small chamber 23.

図３（Ｂ）に示すように、取付板１の前面の法線方向について、各小室２３の内面２３Ａは反射率を低くされており、内面２３Ａにおける反射光の光量は、ＬＥＤ光源１１に近い奥側ほど多く、ＬＥＤ光源１１から遠い手前側ほど少なくなる。このため、ＬＥＤ光源１１の光は、内面２３Ａにおける奥側ほど明るく、手前側ほど暗い光として、内面２３Ａによって階調性を与えられた状態で視認される。   As shown in FIG. 3B, the inner surface 23 </ b> A of each chamber 23 has a low reflectance in the normal direction of the front surface of the mounting plate 1, and the amount of reflected light on the inner surface 23 </ b> A is close to the LED light source 11. It is more on the far side and less on the near side far from the LED light source 11. For this reason, the light of the LED light source 11 is visually recognized as light that is brighter toward the back side of the inner surface 23A and darker toward the front side, with gradation provided by the inner surface 23A.

この階調性により、複数個のＬＥＤ光源１１のそれぞれにＲＧＢ一体型のＬＥＤ光源を用い、複数個のＬＥＤ光源１１で画像を表示した場合、平面画像に立体的な奥行感を与えることができ、擬似的に立体画像に近づけることができる。ただし、複数個のＬＥＤ光源１１を単一色のＬＥＤ光源で構成し、ディスプレイ装置１０を通常の照明装置とは趣の異なる奥行感のある照明装置として用いることもできる。   Due to this gradation, when an RGB integrated LED light source is used for each of the plurality of LED light sources 11 and an image is displayed with the plurality of LED light sources 11, a three-dimensional depth can be given to the planar image. It is possible to approximate a stereoscopic image in a pseudo manner. However, the plurality of LED light sources 11 may be configured by a single color LED light source, and the display device 10 may be used as a lighting device having a feeling of depth different from a normal lighting device.

図４に示すように、本発明の第２の実施形態に係るディスプレイ装置１１０は、取付板１の前面の法線方向における長さ（奥行）が部分的に異なる隔壁１２０を備えたものである。隔壁１２０は、左右の５列の小室１２３２，１２３３の奥行を中央部の小室１２３１の奥行よりも大きくしている。隔壁の中央部と左右とで画像の立体感を異ならせることができる。   As shown in FIG. 4, the display device 110 according to the second embodiment of the present invention includes a partition wall 120 having partially different lengths (depths) in the normal direction of the front surface of the mounting plate 1. . In the partition wall 120, the depths of the left and right rows of small chambers 1232 and 1233 are made larger than the depth of the central small chamber 1231. The stereoscopic effect of the image can be made different between the central portion of the partition and the left and right.

また、複数の小室１２３１、複数の小室１２３２、複数の小室１２３３のそれぞれで、内部に配置された複数個のＬＥＤ光源１１で表示する画像の内容を異ならせることで、内容に応じた立体感を画像に与えることもできる。また、ディスプレイ装置１１０を通常の照明装置とは趣の異なる奥行感のある照明装置として用いることもできる。   In addition, each of the plurality of small chambers 1231, the plurality of small chambers 1232, and the plurality of small chambers 1233 has a three-dimensional effect corresponding to the contents by changing the contents of the images displayed by the plurality of LED light sources 11 arranged inside. It can also be given to images. Further, the display device 110 can be used as a lighting device having a sense of depth different from that of a normal lighting device.

隔壁１２０における部分的な奥行の差異は、図４に示す状態に限るものではなく、上下方向について奥行の差異を与えることや左右方向及び上下方向の両方に奥行の差異を与えることもできる。   The partial depth difference in the partition wall 120 is not limited to the state illustrated in FIG. 4, and the depth difference can be given in the vertical direction or the depth difference can be given in both the horizontal direction and the vertical direction.

図５（Ａ）に示すように、本発明の第３の実施形態に係るディスプレイ装置２１０は、隔壁２２０の前面に半透明のシート２３０を配置している。図５（Ｂ）に示すように、本発明の第４の実施形態に係るディスプレイ装置３１０は、取付板１の前面と隔壁３２０の背面との間に間隔を設け、隔壁３２０の背面に半透明のシート２３０を配置している。ディスプレイ装置２１０及び３１０によれば、光源イメージの視認性を緩和したうえで、平面画像に立体感を与えることができる。また、図５（Ａ）に示すように、隔壁２２０の前面にシート２３０を配置することで、塵埃による小室２２３の汚損を防止でき、この効果のみを得る目的でシート２３０を透明とすることもできる。   As shown in FIG. 5A, a display device 210 according to the third embodiment of the present invention has a translucent sheet 230 disposed on the front surface of a partition wall 220. As shown in FIG. 5B, the display device 310 according to the fourth embodiment of the present invention provides a space between the front surface of the mounting plate 1 and the back surface of the partition wall 320, and is translucent on the back surface of the partition wall 320. The sheet 230 is arranged. According to the display devices 210 and 310, it is possible to give a three-dimensional effect to a planar image while reducing the visibility of the light source image. Further, as shown in FIG. 5A, by disposing the sheet 230 on the front surface of the partition wall 220, the small chamber 223 can be prevented from being contaminated by dust, and the sheet 230 can be made transparent for the purpose of obtaining only this effect. it can.

なお、隔壁２２０又は３２０の一部のみの前面にシート２３０を配置することもできる。   Note that the sheet 230 may be disposed on the front surface of only a part of the partition wall 220 or 320.

図６（Ａ）に示すように隔壁３２０の小室３２３を円形断面とすることもでき、図６（Ｂ）に示すように隔壁４２０の小室４２３を六角形等の多角形断面とすることもできる。これらの場合には、取付板１の前面において、複数個のＬＥＤ光源１１を配置する２方向の格子軸を所定角度回転させた仮想の二次元格子の各格子点に複数個のＬＥＤ光源１１を配置する。   As shown in FIG. 6A, the small chamber 323 of the partition wall 320 can have a circular cross section, and as shown in FIG. 6B, the small chamber 423 of the partition wall 420 can also have a polygonal cross section such as a hexagon. . In these cases, on the front surface of the mounting plate 1, a plurality of LED light sources 11 are placed at respective lattice points of a virtual two-dimensional lattice obtained by rotating a lattice axis in two directions where a plurality of LED light sources 11 are arranged by a predetermined angle. Deploy.

上述の実施形態の説明は、すべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は、上述の実施形態ではなく、特許請求の範囲によって示される。さらに、本発明の範囲には、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

１−取付板
２−隔壁
１０−ディスプレイ装置
１１−ＬＥＤ光源（光源）
２１，２２−帯板
２３−小室
２３Ａ−内面 1-Mounting plate 2-Partition 10-Display device 11-LED light source (light source)
21,22-band 23-small chamber 23A-inner surface

Claims (3)

配光方向を前面側にして同一平面内に配置された複数個の光源と、
前記平面の法線方向に沿って一定の長さを有し、前記複数個の光源のそれぞれを互いに隔離し、前記光源の光を反射する隔壁と、を備え、
前記複数個の光源を正面から見る正面視において、前記光源の光と前記隔壁で反射した光とが別々に視認できるよう、前記隔壁で形成される小室の大きさに対する各光源の大きさが設定され、
前記正面視において、前記隔壁からの反射光が奥側ほど明るくなるように前記隔壁の反射率が一様な低反射率に設定されている、ディスプレイ装置。 A plurality of light sources arranged in the same plane with the light distribution direction on the front side;
A partition wall having a certain length along the normal direction of the plane, separating each of the plurality of light sources from each other , and reflecting the light of the light sources ,
The size of each light source is set with respect to the size of the small chamber formed by the partition so that the light from the light source and the light reflected by the partition can be separately viewed in a front view when the plurality of light sources are viewed from the front. And
The display device in which the reflectance of the partition is set to a uniform low reflectance so that reflected light from the partition becomes brighter toward the back side in the front view . 前記複数個の光源は、前記平面上で互いに直交する２方向の格子軸からなる仮想の二次元格子の各格子点上に配置され、
前記隔壁は、前記２方向の格子軸のそれぞれに平行に配置された帯板で構成した請求項１に記載のディスプレイ装置。 The plurality of light sources are arranged on each lattice point of a virtual two-dimensional lattice composed of lattice axes in two directions orthogonal to each other on the plane.
The display device according to claim 1, wherein the partition wall is configured by a strip plate arranged in parallel with each of the lattice axes in the two directions. 前記複数個の光源は、それぞれＲＧＢ一体型の光源である請求項１又は２に記載のディスプレイ装置。   The display device according to claim 1, wherein each of the plurality of light sources is an RGB-integrated light source.
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