JP3656999B2 - Display panel made of canvas - Google Patents

Description

  The present invention is an advertisement tower frame that occupies a specific site and is constructed independently, or an advertisement tower frame that is constructed in an aspect attached to an existing building etc. Illuminated advertising tower canvas used to illuminate the displayed advertising information clearly by illuminating the display panel surface displaying the advertising information from the back side with an internal light source installed in the advertising tower frame It relates to a display panel.

  Resin-made display panels are widely used as display panels for advertising information in electrical advertising towers, etc., but in resin-made display panels, it is difficult to realize a large-area display panel, A display panel made of canvas is often used for an electric advertisement application requiring a large-area display panel.

  In the display panel made of canvas, it is extremely flexible that the tension in the direction of pulling with equal tension from the surrounding direction must always be applied to the canvas in order to keep the display panel surface flat. There is a problem peculiar to using a material rich in. At this time, the tension to be applied to the canvas must be set with a margin so that it does not flutter due to the daily wind. In addition, the canvas may have a weight that cannot be imagined from the lightness of the appearance, and the tension to be applied to the canvas is a considerable force.

  A member that serves as a scaffold when applying tension to the canvas, that is, a member that receives a reaction force of the tension of the canvas is a peripheral frame that fixes the periphery of the canvas. The peripheral frame has the following technical requirements.

  Since the peripheral frame is often handled at a high place as a canvas display panel integrally with the canvas, it is required to be lightweight. Conventionally, this requirement has been addressed by adopting an aluminum drawn shape having a small specific gravity as the peripheral frame material. Further, the peripheral frame is required to have high bending rigidity in order to effectively support the tension of the canvas. In addition, since shadows are strongly contraindicated on the display panel surface, reinforcement that crosses the peripheral frame cannot be used. This requirement is addressed by setting a large cross-sectional area of the drawn shape member and devising its cross-sectional shape. On the other hand, for the peripheral part of the canvas that inevitably overlaps with the peripheral frame, the illumination from the internal light source is blocked and cannot be used to transmit advertising information, so the peripheral frame should be as thin as possible. There is also a request. Further, the peripheral frame is required to have a structure that stably fixes the peripheral edge of the canvas against the tension of the canvas.

Next, all of the proposed examples described in the cited documents attempt to meet these requirements individually or as a whole.
Japanese Utility Model Publication No. 3-5187 Japanese Utility Model Publication No. 5-21104 Japanese Utility Model Publication No. 6-43829 JP 2000-162972 A

  Patent Document 1 discloses “a frame assembling apparatus for electric signboard”. The main content of the disclosed technology relates to a structure for applying tension to a film sheet used for forming a display panel surface, specifically, a grooved aluminum mold material is used for a peripheral frame member of the film sheet, and the film After fixing the edge of a sheet | seat to a surrounding frame, it is the structure which provides tension | tensile_strength to a film sheet by pushing a tensioner into a groove | channel from the top of a film sheet. The aluminum mold material is thin with a small overall cross-sectional area including the gap, but if the peripheral frame warps against the tension of the film sheet, a warp prevention arm is used. It shall be used as appropriate. The warp preventing arm inferred from FIG. 2 of the same document has a considerable width dimension and is arranged between the fluorescent lamp and the film sheet in a direction crossing the fluorescent lamp in the width direction. Therefore, it is inevitable that a large shadow is reflected on the display surface. Moreover, the base part of the arm for warp prevention is being fixed to the fixing member at the back of the film sheet, and from the point that the fixing member exists at this position, the frame assembly apparatus for an electric signboard according to the same document is used as a display panel. It is considered that a thin electric signboard using only one film sheet for the front surface is assumed. Therefore, it is difficult to use this type of reinforcing member for an electric signboard having two display panels facing each other, an electric signboard having three or more display panels whose depth dimension increases, and the like.

  Patent Document 2 discloses a “signboard canvas tensioning device”. The contents of the disclosed technology relate to the fixation of canvas and the application of tension. As shown in FIG. 2 of the same document, the edge of the canvas is fixed by folding the canvas over a tongue called an extension wall formed integrally with the frame frame, and superimposing the overlapped tongue with the canvas. There is a novel contrivance that uses a holding tool similar to the so-called “Gachadama” used to close a document. Moreover, the tension | tensile_strength provision system is a system which pushes one side of the L-shaped board | plate material called a tension board in a groove | channel. In both the fixed structure of the canvas and the tension structure, the stress is concentrated in the local area of the canvas by the plate thickness of the tongue and the tension plate of small area, and it is applied to the canvas with low cutting strength. It ’s difficult.

  In the above-mentioned document, an example of a peripheral frame including a slope is disclosed as a prior art. However, since this slope portion needs to house a member for imparting tension to the canvas inside, the tip side is open and does not form a closed box structure, so it can withstand the tension of the canvas. The structure is difficult to secure the strength and has little effect to contribute to increasing the bending rigidity of the frame frame.

  Patent Document 3 discloses “a frame assembly device for an electric signboard”. The contents of the disclosed technology are exclusively related to a mechanism for applying tension to the canvas. A configuration is adopted in which the peripheral edge of the canvas is gripped by a gripping tool and the gripping tool is moved by a feed screw.

  Patent Document 4 discloses “a canvas advertising tower” by the applicant of the present invention. The content of the disclosed technology relates to two points, that is, fixing of the canvas and application of tension. As the peripheral frame on which the canvas is stretched, the one for the advertising tower, that is, the one in which the length of the vertical frame in the vertical direction is set longer than the horizontal frame in the horizontal direction is used. The canvas is made into a cylindrical shape by folding or sticking the left and right edges fixed to the vertical frame, and a core material for retaining is loaded in the cylindrical part, and the core material is attached by the left and right vertical frames. It is the structure to hold | grip. In addition, for applying tension to the canvas, a unique configuration using the strength of the advertising tower frame that is an attachment member of the display panel made of canvas is employed. Although details of the configuration are disclosed in the same document, the outline will be briefly described within a range necessary for comparison with the present application.

  That is, the interval between the vertical frames of the display panel made of canvas coincides with the interval between the columns, which is the main skeleton in the vertical direction of the advertising tower frame. A plurality of taper pin-shaped receiving members bent upward are attached to the support column side, and a hanging member provided with a taper hole that engages with the receiving member is attached to the back side of the vertical frame of the canvas display panel. ing. At this time, the distance between the centers of the support member of the support column and the pair of left and right vertical frame hanging members is set to be the same, but as a result of the long vertical frame being distorted inward by the tension of the canvas, The distance between the centers of the taper holes of the hanging member is somewhat narrower. When the canvas display panel is attached to the advertising tower frame in this state, the interval between the hanging members is expanded so as to match the interval of the receiving member by the action of the taper hole, and thereby the vertical frame is linear. At the same time, a predetermined tension is applied to the canvas.

  However, the above-mentioned conventional in-house technology has also raised the following problems to be solved. In order to fix the canvas, the edge of the canvas has to be folded or stuck back, which causes a higher cost than a method of fixing in a separated state. When the canvas is stretched over time, to re-tension the canvas, the entire canvas display panel must be pushed down along the receiving member. As a result, the canvas The mounting position of the display panel made of the product is shifted from the predetermined mounting position. In this case, since the distance between the pair of left and right vertical frames does not change at the position connected to the horizontal frame, there is a significant difference in tension between the center position and the vertical position of the canvas, and the surface of the canvas This caused undulations due to uneven tension.

  The present invention intends to solve the problem that the effective area of the display panel surface inevitably decreases when the cross-sectional area of the peripheral frame on which the canvas is stretched is increased, and the demand for large-scale advertisements. When a long vertical frame or horizontal frame is used, the middle position of the vertical frame or horizontal frame bends inward against the tension of the canvas, and when the problem is to be solved by reinforcement, the display panel The problem is that the shadow of the reinforcing member is reflected on the surface.

  The present invention also provides a canvas fixing structure, a tension applying structure, and a reinforcing structure for the peripheral frame, which are optimal for the configuration, by adopting a peripheral frame having a new structure for solving the above problems. Together with the purpose.

  According to the present invention, a pair of vertical frames arranged on the left and right sides of a canvas for displaying advertisement information and a pair of horizontal frames arranged on the top and bottom of the canvas are made of aluminum pull-out shapes having the same cross-sectional shape having a box structure. A display panel in which the canvas is fixed to a peripheral frame assembled in a rectangular frame shape, tension is applied to the canvas from the vertical direction and the horizontal direction, and the canvas is flat without distortion. The display panel is detachably attached to an advertising tower frame having an internal light source, and the advertising information displayed on the canvas is illuminated from the back side of the canvas. The shape of the vertical frame and the horizontal frame forming the canvas is a canvas positioning surface for positioning a planar canvas at a predetermined position, a tension applying surface that is orthogonal to the canvas positioning surface, and a perpendicular to the tension applying surface. And behind the canvas positioning surface A canvas fixing surface formed on the cloth positioning surface, and a tension groove which is depressed in a V shape along the longitudinal direction of the vertical frame and the horizontal frame is formed on the tension applying surface. Wrap it around the tension applying surface from the canvas positioning surface of the frame and horizontal frame, wrap it around the tension applying surface, fix it on the tension applying surface, and press the V-shaped pressing rail from above the canvas into the tension groove to the canvas It is characterized by imparting tension.

  The fact that the box structure is effective as a means for increasing the bending strength of a long member such as a support is widely known in the steel construction industry field, the automobile industry field, and the like. In this configuration, the canvas changes its direction by 180 degrees in the process of being wound from the canvas positioning surface through the tension applying surface to the canvas fixing surface, and is folded and fixed to the canvas fixing surface. At this time, the canvas on the tension applying surface crosses the front surface of the tension groove in a planar state. When the V-shaped pressing rail is pressed from above the canvas, the flat canvas is pushed into the tension groove so as to be bent in a V-shape. At this time, the canvas of the increased size necessary for the canvas to bend is supplied by the displacement of the canvas from the canvas positioning surface side where the canvas is not fixed, and the canvas stretched on the front surface of the peripheral frame has no tension. Tension force according to the advance position of the pressing rail in the groove is applied.

  A large number of small ridges can be formed along the longitudinal direction of the vertical frame and the horizontal frame on the canvas fixing surfaces of the vertical frame and the horizontal frame forming the peripheral frame.

  Since the displacement direction of the canvas into the tension groove is a direction orthogonal to the longitudinal direction of the vertical frame and the horizontal frame, the tension force of the canvas is applied in a direction orthogonal to a large number of small ridges. If the canvas fixed to the canvas fixing surface is about to come out, it has to meander multiple times across many small ridges. That is, a large number of small ridges on the canvas fixing surface can act as a large braking force against the movement of the canvas.

  The pair of vertical frames or the pair of horizontal frames forming the peripheral frame are connected to a position retracted from the canvas positioning surface by a plurality of single plate-like reinforcing stays.

  A pair of vertical frames or a pair of horizontal frames are connected by a plurality of reinforcing stays, and at the same time the tension of the canvas that works in a direction to bring the pair of vertical frames or the pair of horizontal frames close to each other is received by the reinforcing stays. The tension applied to the frame can also accept the force acting in the direction of twisting the vertical frame or horizontal frame, so that the vertical frame or horizontal frame is distorted inward and the canvas is loosened, and the vertical frame or horizontal frame is By being twisted and distorted inwardly in the vicinity of the center of the vertical frame with the twist, the phenomenon that the canvas is slack can be prevented. This makes it possible to use a lightweight and slim material with a small cross-sectional area for the vertical or horizontal frame. In addition, since the light irradiation characteristics of the straight tube fluorescent light source used in this configuration are the same as those obtained by arranging a large number of point light sources in a line, a plurality of reinforcing stays make the thickness of the straight tube fluorescent light source thicker. As long as it is installed in a crossing direction and is positioned backward from the canvas positioning surface, the disadvantage that the shadow of the reinforcing stay is projected onto the canvas is not visually surfaced.

  The display panel made of canvas of the electric advertisement tower of the present invention reduces the effective area of the display panel surface by adopting an aluminum drawn shape member that takes a box structure including a vertical frame and a horizontal frame slope forming a peripheral frame. It is possible to use an aluminum drawn section with a large cross section that can withstand the tension of the canvas without causing it, and if necessary, display panel surface between a pair of vertical frames or a pair of horizontal frames It is possible to connect with the reinforcement stay without causing the shadow of the reinforcement stay.

  The display panel made of canvas of the electric advertisement tower according to the present invention has a display panel attached along the wall surface of the building and the like. Each side of the advertising tower frame with three or more square towers, in addition to the two-sided type that displays the advertising information on the display panels attached to the two sides of the advertising tower frame having independent foundations attached in a protruding form It can be implemented in a multi-faceted form in which a display panel is attached to and used. Here, the example implemented by the 2 surface type | mold which has an independent foundation is demonstrated.

  An advertising tower frame 10 is prepared as a mounting member for the display panel 20 (FIG. 1). The advertising tower frame 10 is formed by connecting two upper and lower portions of two support columns 11 and 11 that are erected by embedding a lower end portion in an independent foundation 13 made of a concrete block with connecting members 12 and 12. The support column 11 and the connecting material 12 are made of box-shaped steel materials having the same cross-sectional size, and the height of the support column 11 is determined by the installation height of the display panel 20, and the interval between the two support columns 11, 11 is the display panel to be attached. Determined by 20 width dimensions.

  A plurality of hooks 14, 14... For detachably attaching the display panels 10, 10 are welded to the front and rear surfaces of the two columns 11, 11. Each hook 14 is made of a round bar material that is bent from the horizontal direction upward. Four straight tubular fluorescent tubes 15, 15... As internal light sources are attached to the inner side surfaces of the two columns 11, 11 in the vertical direction along the columns 11, 11. The number of straight tubular fluorescent tubes 15 to be used is determined by the size of the display panel 20 and the required amount of light.

  The display panel 20 is formed by stretching a canvas 24 around a peripheral frame 23 composed of a pair of left and right vertical frames 21 and 21 and a pair of upper and lower horizontal frames 22 and 22 (FIG. 2). The vertical frame 21 and the horizontal frame 22 are obtained by cutting the same material into different lengths and have the same configuration except for the length. Note that the horizontal frame 22 may be set longer than the vertical frame 21 for a horizontally long advertising demand. In each corner portion where the vertical frame 21 and the horizontal frame 22 are welded and connected, angle-shaped corner connection fittings 25 that are respectively fitted into the inner compartment A are inserted to reinforce the corner portion, Easy to assemble. Further, in this embodiment, a pair of reinforcing stays 26, 26 are arranged at an equal distance between the left and right vertical frames 21, 21, which are set to be relatively long, with an intermediate point P1 of the length of the vertical frame interposed therebetween. Are connected by Further, when the horizontal frames 22 and 22 are set longer than the vertical frames 21 and 21, the reinforcing stay 26 is attached so as to connect the upper and lower horizontal frames 22 and 22.

  Next, each component will be described. The canvas 24 forming the display panel surface is obtained by impregnating a canvas with a resin and is flexible, but has sufficient weather resistance to withstand outdoor use and has extremely high tensile strength. In addition, it exhibits semi-translucency for light.

  The vertical frame 21 and the horizontal frame 22 are made of an aluminum drawn shape having a box structure in cross section (FIG. 3). This aluminum drawn shape has a closed outer section including an inner section A that forms a closed section including the slope 2A, a tension positioning surface 2B that forms a canvas positioning surface 2B, and a tension groove 21V that is recessed in a V shape. B, both of which are partitioned by partition ribs 2F. A retaining surface 2E for attaching the vertical frame 21 to the advertising tower frame 10 is formed behind the inclined surface 2A, and a pair of gripping ribs 21R and 21R protrudes rearward from the retaining surface 2E. Further, behind the canvas positioning surface 2B, a canvas fixing surface 2D for fixing the edge of the canvas 24 is formed. The canvas positioning surface 2 </ b> B, the tension applying surface 2 </ b> C, and the canvas fixing surface 2 </ b> D are integrally continuous at an angle of 90 degrees to form the outer section B.

  As a result, the surface width D2 of the canvas positioning surface 2B in the vertical frame 21 is set to be significantly narrower than the overall width D1. In addition, since the horizontal frame 22 which forms the surrounding frame 23 is the same structure as the vertical frame 21 demonstrated here, description is abbreviate | omitted. Further, the vertical frame 21 and the horizontal frame 22 are attached with a pressing rail 27 that can be screwed closely into the tension groove 21V and a pressing plate 28 that can be screwed to the canvas fixing surface 2D. A large number of small ridges 2d may be formed on the canvas fixing surface 2D along the longitudinal direction of the vertical frame 21 (FIG. 4). In this case, small protrusions 28d that mesh with each other are also provided on the corresponding pressing plate 28 side to improve the fixing performance. In the illustrated example, the small convex strips 2d and 28d are both serrated, but either one may be used, or a knurled strip may be used.

  Each of the reinforcing stays 26 connecting the pair of left and right vertical frames 21 and 21 has a simple configuration in which fixing brackets 26B and 26B provided with screw holes on both ends of a metal single plate 26A are welded at right angles ( FIG. 5 (A), (B)). Notches 26H and 26H are formed at both ends of the metal single plate 26A to avoid interference with the support columns 11 and 11. The plate thickness T1 of the metal single plate 26A is set according to its length.

  The vertical frames 21 and 21 and the horizontal frames 22 and 22 that form the peripheral frame 23 are assembled in a square frame shape by combining the inclined surfaces 2A and 2A so as to expand outward, and the canvas 24 is formed in a square frame shape. The peripheral edge is temporarily fixed to the assembled peripheral frame 23, for example, the canvas 24 and the peripheral edge of the peripheral frame 23 with a double-sided adhesive tape, and an initial predetermined tension is applied (FIGS. 2 and 6). Furthermore, the peripheral edge of the canvas 24 is wound from the canvas positioning surfaces 2B of the vertical frames 21, 21 and the horizontal frames 22, 22 to the tension applying surface 2C, from the tension applying surface 2C to the canvas fixing surface 2D, It is fixed by pressing with a pressing plate 28 and screwing. Then, the canvas fixing surface 2D to which the pressing plate 28 is attached and the hooking surface 2E are in a state of being flush with each other.

  The reinforcing stay 26 is screwed by overlapping a fixing bracket 26B on the hooking surface 2E and the pressing plate 28 that are flush with each other. At this time, the reinforcing stays 26 and 26 are in a posture in which the plate surface side is orthogonal to the vertical frames 21 and 21 at positions separated from the straight tubular fluorescent tubes 15 and 15 by the plate thickness T1 (FIGS. 2 and 7). ). Next, the pressing rail 27 is screwed into the tension grooves 21V and 21V. Therefore, the canvas 24 is drawn into the tension groove 21V from the canvas positioning surface 2B side, and sufficient tension is generated in the canvas 24. The reinforcing stays 26 and 26 effectively receive the inward bending force F2 generated as a reaction force of the tension force of the canvas 24 and the moment forces F1 and F1 that the vertical frames 21 and 21 try to rotate in the direction in which the canvas 24 is extended. (FIG. 6).

  In the holding ribs 21R, 21R of each vertical frame 21, latching blocks 16, 16,... Corresponding to the latching hooks 14, 14,. It is fixed by the bracket 17 (FIG. 7). The completed display panels 20 and 20 are attached to the columns 11 and 11 by inserting the latching hooks 14 through the through holes formed in the latching blocks 16. Thereafter, although not shown, a decorative cover is attached to the outer side surface portions of the support columns 11 and 11 and the side surfaces of the display panels 20 and 20.

  As a result of such a configuration, the straight tubular fluorescent tubes 15 and 15 reach the canvas 24 along the slopes 2A and 2A without casting the shadow of the reinforcing stay 26 on the canvas 24, and the vertical frames 21 and 21 having a large cross-sectional area. The effective width W2 and effective height H2 of the display panel surface 20A can be greatly increased compared to the effective width W1 and effective height H1 when no inclined surface is used (FIG. 2, FIG. 2). FIG. 7).

  The display panel made of canvas of the electric advertisement tower of the present invention can be freely set in size and exhibits semi-translucency with respect to light. It can be conveniently used as a display panel for a general electric signboard or a standing signboard attached to the wall surface of the projector, or as an outdoor screen for a projector apparatus. Regarding the illumination method, there is no particular problem with using the external illumination method in addition to the internal illumination method.

The disassembled perspective view which shows the example of installation of a display panel. The front view of the display panel which fractures | ruptures and shows a canvas. The side end view of a vertical frame. The side end view which shows the modification of a vertical frame. The front view and top view of a reinforcement stay. The cross-sectional view of a display panel. The cross-sectional view of the display panel in a state attached to the advertising tower frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Advertising tower frame 11 Support | pillar 15 Straight tubular fluorescent tube 20 Display panel 21 Vertical frame 21V Tension groove 22 Horizontal frame 23 Peripheral frame 24 Canvas 2A Slope 2B Canvas positioning surface 2C Tensile force imparting surface 2D Canvas fixed surface 2d Small ridge 26 Reinforcement stay 27 Pressing rail

Claims (3)

A pair of vertical frames arranged on the left and right sides of the canvas displaying the advertisement information and a pair of horizontal frames arranged on the top and bottom of the canvas, respectively, are cut into predetermined lengths of aluminum drawn profiles having the same cross-sectional shape. The canvas is fixed to a peripheral frame assembled in a square frame shape, and a tension is applied from the vertical and horizontal directions of the canvas so that the canvas is kept flat without distortion. In the canvas display panel of the electric advertisement tower, which is detachable from the advertisement tower frame having an internal light source and illuminates the advertisement information displayed on the canvas of the attached canvas panel from the back side of the canvas,
The shape of the vertical frame and the horizontal frame forming the square frame-shaped peripheral frame is a canvas positioning surface for positioning a planar canvas at a predetermined position, and a tension applying surface that is continuous perpendicular to the canvas positioning surface, A canvas fixing surface which is continuous and orthogonal to the tension applying surface and is formed in parallel to the canvas positioning surface behind the canvas positioning surface;
A tension groove recessed in a V shape along the longitudinal direction of the vertical frame and the horizontal frame is formed on the tension force applying surface, and the peripheral edge of the canvas is applied with tension from the canvas positioning surfaces of the vertical frame and the horizontal frame. It is characterized in that it is wound around the surface, and is further wound around and fixed to the canvas fixing surface from the tension applying surface, and a tensile force is applied to the canvas by pressing a V-shaped pressing rail from above the canvas into the tension groove. ,
A display panel made of canvas for the illuminated advertising tower. A number of small ridges are formed on the canvas fixing surface along the longitudinal direction of the vertical and horizontal frames,
The canvas display panel of the electric advertisement tower according to claim 1. The pair of vertical frames or the pair of horizontal frames are connected to a position retracted from the canvas positioning surface by a plurality of single plate-like reinforcing stays,
A display panel made of canvas of the electric advertisement tower according to claim 1.

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