JP2007264201A - Display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To mount or remove blocks from the front or back of an electric illumination display building its surface by using a plural number of blocks. <P>SOLUTION: A cell block 10 is made by forming a matrix of cells 13 each housing one red light-emitting diode 14R, a blue light-emitting diode 14B, and a green light-emitting diode 14G. The display surface 2 is built by housing a number of cell blocks 10 in a box 30. These cell blocks 10 are secured to the bottom plate 32 of the box 30 with spacers 21. The spacers 21 are fixed to the back of the cell blocks 10, with the first screws 17 penetrating the cell block 10 from the front and fixed on the bottom plate 32, with the second screws 24 penetrating the bottom plate 32 from the back side. The first screws 17 and second screws 24 are inserted into common holes 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electroluminescent display device using a light emitting diode.

  Light-emitting display devices using light-emitting diodes are widely used for applications such as advertising, news announcements, and guidance displays. Examples thereof can be found in Patent Documents 1 and 2.

  In Patent Document 1, a total of 256 light emitting elements each composed of one red light emitting diode, one green light emitting diode, and one blue light emitting diode are arranged in 16 rows × 16 columns to form one display body. A total of six light-emitting display devices arranged in rows and three columns are described.

Patent Document 2 describes a display device in which a light emitting device configured by arranging three light emitting diodes constituting one pixel in one direction is stored in a storage pocket provided in a storage sheet.
Japanese Patent Laying-Open No. 2005-181666 ([0016]-[0075], FIGS. 1-4) Japanese Patent Laying-Open No. 2005-99792 ([0006]-[0057], FIG. 1-12)

  If the light-emitting display device has been used for a long time, the light-emitting diode will be ready for replacement. In an electric display device used outdoors, rainwater may enter the wiring portion and cause damage. Therefore, an electro-optical display device is required to have a mechanism that can easily perform maintenance of a light emitting diode and repair of wiring.

  In the case of a normal light-emitting display device, instead of mounting all the light-emitting diodes on a single substrate, a block of a predetermined size (in many cases including a number of light-emitting diodes that can form one character) is used. It is formed and screwed to the frame or housing so that it can be replaced in units of blocks. By the way, the light-emitting display device may be installed outside the window of the building or on the edge of the rooftop. In such a case, it would be convenient to have a mechanism that allows the screws to be removed from the inside of the window or the inside of the rooftop edge.

  The present invention has been made in view of the above points, and in an electro-optical display device in which a display surface is formed by a plurality of blocks, the blocks can be attached and detached from the front side or the back side for the convenience of assembly and maintenance. It is intended.

  (1) In order to achieve the above object, the present invention provides an electric display device in which a plurality of cell blocks in which cells containing light emitting diodes are arranged in a matrix are stored in a box-shaped container to form a display surface. The block is fixed to the bottom plate of the box-shaped container with a spacer interposed therebetween, and the spacer is fixed to the back side of the cell block by a first screw penetrating the cell block from the front side, and the bottom plate is fixed to the back side. It is characterized by being fixed to the front side of the bottom plate by a second screw penetrating from the bottom.

  According to this configuration, when the light-emitting display device is installed on the outside of the window or on the edge of the roof, the second screw faces the inside of the window or the inside of the edge of the roof. If the second screw is removed, the cell block can be removed with the spacer fixed to the back side thereof. Since the driver can be used inside the window or the edge of the roof, there is no risk of dropping the driver on the road without being forced to work. When the light display device is attached to the surface of the wall and the driver cannot reach the second screw, the cell block can be removed by removing the first screw from the front side.

  (2) Further, according to the present invention, in the electronic display device having the above-described configuration, the first screw and the second screw are screwed into a common screw hole provided in the spacer.

  According to this configuration, it is not necessary to separately provide the screw hole for the first screw and the screw hole for the second screw in the spacer, and the structure of the spacer can be simplified and manufacturing can be facilitated.

  (3) Further, according to the present invention, in the electronic display device having the above configuration, the box-shaped container has a back cover on the back side of the bottom plate, and a lighting control unit for the light emitting diode is provided on the back cover. It is characterized by.

  According to this configuration, not only the light emitting diode but also the lighting control unit thereof can be incorporated in one container, and the electric display device can be compactly assembled.

  According to the present invention, the cell block can be removed from the box-shaped container either by removing the first screw from the front side or by removing the second screw from the back side. Therefore, when the cell block needs to be replaced, the cell block can be removed from the one that is easy to work according to the installation state of the light emitting display device.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 is a front view of the electro-optical display device, FIG. 2 is a side view of the electro-optical display device, FIG. 3 is a front view of the cell block, FIG. 4 is a sectional view of the cell block attached to a box-shaped container, and FIG. FIG. 6 is a cross-sectional view showing a situation in which the cell block is removed by removing the screw 2 and FIG. 6 is a sectional view showing a situation in which the cell block is removed by removing the first screw.

  The electro-optical display device 1 forms a display surface 2 by arranging a total of eight cell blocks 10 in which cells containing light emitting diodes are arranged in a matrix, 2 rows × 4 columns, and the display surface 2 is formed into a box-shaped container 30 ( It is the structure attached to FIG. Note that 2 rows × 4 columns is merely an example, and other numbers of rows and columns may be used.

  As shown in FIG. 4, the cell block 10 has a back side of the synthetic resin lattice 11 (the side on which the viewer of the display surface 2 is located is the front side, and the opposite side is the back side. ) And the substrate 12 in combination. Each of the lattices of the lattice 11 is a front-shaped square cell 13. There are a total of 64 cells 13 in 8 rows × 8 columns. Note that 8 rows × 8 columns is merely an example, and other numbers of rows and columns may be used. The lattice body 11 is molded from a synthetic resin that does not transmit light, and therefore light does not leak between the cells 13.

  In each cell 13, one red light emitting diode 14R, one blue light emitting diode 14B, and one green light emitting diode 14G are arranged. If necessary, a transparent synthetic resin is injected into the cell 13 to mold the three light emitting diodes.

  Screw bosses 15 are formed in the lattice body 11 at four locations. And the through-hole 16 (refer FIG. 6) which penetrates the screw boss | hub 15 and the board | substrate 12 from a front side to a back side is provided. The through hole 16 is used to pass the first screw 17.

  A back plate 18 made of a sheet metal that covers the substrate 12 is disposed on the back side of the lattice body 11. The back plate 18 has a tray shape, and its peripheral edge is inserted into a groove 19 formed in the lattice body 11. A seal member 20 is sandwiched between the lattice body 11 and the back plate 18 to prevent water from entering the back side of the substrate 12 from this location.

  On the back side of the substrate 12, a cylindrical spacer 21 is disposed at a position corresponding to the screw boss 15. A screw hole 22 aligned with the through hole 16 is formed in the spacer 21, and a through hole 23 through which the spacer 21 is passed is formed in the back plate 18. The first screw 17 is screwed into the screw hole 22 through the through hole 16 from the front side, and the second screw 24 is screwed from the back side.

  The box-shaped container 30 is made of sheet metal, and has a configuration in which a bottom plate 32 (see FIG. 4) is fixed to a frame portion 31 having a front shape rectangle. The bottom plate 32 is formed with a through hole 33 (see FIG. 5) aligned with the screw hole 22 of the spacer 21. A back cover 34 (see FIG. 2) is disposed on the back side of the bottom plate 32. The back cover 34 is attached to the frame portion 31 by a hinge portion (not shown), and can be opened and closed with the hinge portion as a center. The back cover 34 is provided with a light emitting diode lighting control unit 35.

  In attaching the cell block 10 to the box-shaped container 30, the spacer 21 is fixed to the back side of the substrate 12 with the first screw 17 and the back plate 18 is inserted into the groove 19, and the back surface of the cell block 10 is placed on the bottom plate 32. Apply to the front side of At this time, the sealing member 36 is sandwiched between the back plate 18 and the bottom plate 32. When the second screw 24 is screwed into the screw hole 22 through the through hole 33 of the bottom plate 32 and tightened, the cell block 10 is completely attached.

  When it becomes necessary to remove the cell block 10, one of the following two methods is adopted depending on the installation state of the light-emitting display device 1. When the light-emitting display device 1 is installed outside the window of the building or on the edge of the roof and the back cover 34 can be opened, the back cover 34 is opened, the back side of the bottom plate 32 is exposed, and the window The second screw 24 is removed with a screwdriver from the inside or the inside of the roof edge. Then, as shown in FIG. 5, the cell block 10 can be removed while the spacer 21 is fixed to the back side of the substrate 12. Since the driver can be used inside the window or the edge of the roof, there is no risk of dropping the driver on the road without being forced to work.

  When the electroluminescent display device 1 is attached to the surface of the wall and the back cover 34 cannot be opened or the driver cannot reach the second screw 24, the first screw 17 is removed from the front side. Then, as shown in FIG. 6, only the combination of the lattice body 11 and the substrate 12 can be removed while the back plate 18 and the spacer 21 are attached to the bottom plate 32.

  Although the embodiments of the present invention have been described above, the scope of the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the invention.

  The present invention can be widely used for an electro-optical display device.

Front view of light-emitting display device Side view of light-emitting display device Front view of cell block Sectional view of the cell block attached to a box-shaped container Sectional drawing which shows the condition which removes a 2nd screw and removes a cell block Sectional drawing which shows the condition which removes a 1st screw and removes a cell block

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric light display apparatus 2 Display surface 10 Cell block 11 Grid 12 Board | substrate 13 Cell 14R Red light emitting diode 14B Blue light emitting diode 14G Green light emitting diode 17 1st screw 18 Back plate 21 Spacer 22 Screw hole 24 2nd screw 30 Box shape Unit 31 Frame 32 Bottom plate 34 Back cover 35 Lighting control unit

Claims (3)

In an electric display device that forms a display surface by storing a plurality of cell blocks in which cells containing light emitting diodes are arranged in a matrix in a box-shaped container,
The cell block is fixed to a bottom plate of the box-shaped container with a spacer interposed therebetween, and the spacer is fixed to the back side of the cell block by a first screw penetrating the cell block from the front side. The light-emitting display device is fixed to the front side of the bottom plate by a second screw that penetrates the back plate from the back side. The electroluminescent display device according to claim 1, wherein the first screw and the second screw are screwed into a common screw hole provided in the spacer. The electric display device according to claim 1, wherein the box-shaped container has a back cover on the back side of the bottom plate, and a lighting control unit for the light emitting diode is provided on the back cover.

Images