JPS6025793B2 - Box-shaped display board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises a reflector made of a thin metal plate curved around a horizontal axis, a light source placed in front of the reflector, and a front plate placed in front of the light source. This relates to a box-shaped display board.

A box-shaped display board is known in which a metal plate curved around a horizontal axis is used as a reflector and a light source is arranged between the reflector and the front slope.

This type of box-shaped display board is generally rigidly attached to the wall where it is to be installed, but it is generally uncomfortable to sit on, and it is impossible to temporarily place the box-shaped display board on a flat surface during the installation process. It is inconvenient to install it permanently on top and inconvenient to mount it on a horizontal part close to the wall.

Furthermore, unless a separate reflector is provided inside, the light from the light source will not be sufficiently diffused and the characters cut out on the front panel will not be clearly displayed. The object of the present invention is to obtain a box-shaped display board that eliminates these drawbacks.

In order to achieve this object, the box-shaped display board of the present invention forms a reflector with a corrugated concave-convex plate having a waveform in a direction perpendicular to the horizontal axis, and the edge of the reflector directed toward the front plate is connected to the edge of the front plate. It is characterized by being connected to.

With this configuration, the uneven reflector is bent to provide a sufficiently strong structure, and the display board can stand on its own, meaning it can stand upright without having to be supported by others. Moreover, the unevenness of the reflector effectively diffuses the light to the bottom surface of the box-shaped display board. Needless to say, the fact that the reflector only needs to be bent at one location saves labor. The invention will be explained with reference to the drawings.

The box-shaped display board as a signboard according to the present invention as shown in FIG. It comprises a front plate 3 consisting of a partially bent aluminum sheet to form the bottom part 12 of the shape plate.

In this embodiment, the sign has a flat bottom 12 and a sharp edge at the front of the bottom. This front plate 3 allows light to pass through holes 4 that indicate letters, for example. The reflector 1 is corrugated and curved approximately 900 degrees along the horizontal axis. The reflector 1 thus has an approximately flat vertical band, a horizontal band and a curved intermediate band. The waveform peaks of the waveform irregularities of the reflector are perpendicular to the above-mentioned horizontal axis along which the reflector is bent. Before bending, the undulations of this reflector have a pattern in the form of parallel asperities 5 with an approximately trapezoidal cross-section. The reflector 1 is extremely strong due to strain hardening when the unevenness is actually formed and an increase in the moment of inertia of area due to the shape of the unevenness. By forming the unevenness symmetrically, that is, by forming the unevenness in an equilateral trapezoid, it is advantageous that the diffusion or scattering of light on the front plate 3 can be made symmetrical. If the concave and convex portions 5 are placed close enough to each other, light can be completely and uniformly diffused. It can be said that the distance between the parallel and symmetrical planes of the trapezoidal unevenness 5 is sufficiently small if it is equal to or greater than 3. The ratio of this distance to the height of the trapezoid can be, for example, 1:4. In the example shown, this height is six ribs. This trapezoidal irregularity can be easily formed by means of a corrugating tool, ie by gradually feeding the as yet unmachined sheet. This box-shaped display board has joints 7, 8 for attaching the front panel 3 to the edges of two mutually perpendicular, substantially flat reflector castles of the reflector 1.

The lower joint 8 has two vertical grooves 8a and 8b that are perpendicular to each other.
is an edge strip having . The edge of the bottom 12 of the front plate 3 is folded back as shown to form a flange, which is engaged with the groove 8b of the joint 8. The second joint 7 is a chevron-shaped strip, and this chevron-shaped strip is attached to the edge la of the horizontal band of the reflector 1 to support the front plate 3. A lower flange 10 is provided at the upper end of the front plate 3, and a joint 7, which is a chevron-shaped strip, is provided along the upper end green of the lower flange.
Multiply. These joints 7, 81 facilitate assembly of the components of this box-shaped display board. The thickness of the reflector 1 is about 0.7 skin. In the case of trapezoidal unevenness 5 as shown,
This thickness is sufficient to provide the necessary stiffness. A thicker plate would be a bit too stiff to work with, and would not increase rigidity much, but would simply add weight to the reflector. Advantageously, this reflector is made of aluminum. An acrylic sheet 11 may be placed behind the front plate 3.

With this configuration, for example, the front plate 3 in FIG.
The holes 4 diffuse the light, making this box-shaped display board useful as a modern neon light display board. This front plate 3 may be made of brown or black electrolytically treated aluminum sheet 3a, which has unique properties.

Alternatively, the front plate 3 may be divided into several pieces.

Further, 8 tones of serrations may be provided for every 25th tone, 50th tone, or 75c. Side plates as shown in FIG. 2 are provided on both sides of this box-shaped display plate.

These side plates may be made of electrolytically treated aluminum plates. The radius of curvature of the intermediate band of the reflector is preferably 3 to 20 degrees.

According to the present invention, the reflector of the box-shaped display board can be attached to the wall so that the bottom of the box-shaped display board is adjacent to the wall.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an example of the box-shaped display board of the present invention, and FIG. 2 is a perspective view of one side plate of the display board of FIG.

1... Reflector, la... Machine edge, 2...
...Light source, 3... Front plate, 4... Hole, 5
...Irregularities, 7, 8...Joints, 10...
... lower flange, 11 ... acrylic seam
G, 12...Bottom.

Fne・2 -, difference

Claims (1)

[Scope of Claims] 1. A box-shaped display board consisting of a reflector curved around a horizontal axis and made of a thin metal plate, a light source placed in front of the reflector, and a front plate placed in front of the light source. In this case, the reflector 1 is formed of a corrugated plate having waveform peaks in a direction perpendicular to the horizontal axis, and the edge 1a of the reflector 1 directed toward the front plate 3 is connected to the edge of the front plate 3. A box-shaped display board characterized by being connected to the edges. 2. The box-shaped display board according to claim 1, wherein the front plate 3 is made of an electrolytically treated aluminum sheet 3a with holes 4 formed therein. 3. The box-shaped display board according to claim 2, wherein an acrylic sheet is arranged behind the front board 3. 4. The box-shaped display board according to any one of claims 2 and 3, wherein the front board 3 is divided into several pieces. 5. The box-shaped display board according to any one of claims 1 to 4, wherein the waveform irregularities of the reflector 1 are trapezoidal waveforms. 6. The box-shaped display board according to claim 5, wherein the ratio of the height to the length of one waveform of the trapezoid is about 1:4. 7. The box-shaped display board according to claim 6, wherein the length of each waveform is approximately 30 mm. 8. The box-shaped display board according to any one of claims 1 to 7, wherein the light source 2 is attached to the reflector. 9. Claims 1 to 8, wherein a joint 8 is provided at the lower part of the reflector, and a lower flange provided at the bottom 12 formed by horizontally bending the lower part of the front plate 3 is connected to the joint 8.
A box-shaped display board as described in any one of the following paragraphs.