JP2817519B2 - Display of weighing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device of a weighing machine, and more particularly to a display device of a fueling amount provided in a weighing machine for supplying gasoline and light oil to an automobile or the like, or a charging device provided in a charging device of an electric vehicle. A quantity display device.

[0002]

2. Description of the Related Art Conventionally, a weighing machine installed in a gasoline filling station for refueling an automobile or the like is provided with a refueling amount display device for displaying a refueling amount. For example, among the weighing machines, the weighing machine fixed on the ground has a weighing machine case installed on an island installed on the ground, and a refueling amount display device is provided on an upper front surface inside the weighing machine case. There are various types of the refueling amount display device, and as a display method, there are a liquid crystal display type, a magnetic reversal plate type in which characters are displayed on a reversal plate, a plasma display type, and the like. Such a refueling amount display device uses a dark color mainly composed of black on the display window background so that the refueling amount is clearly displayed, and therefore, the color of the outer surface of the weighing machine case is also based on black. Many use colors that have changed.

[0003]

That is, in the conventional display device, the character portion is clearly displayed with the background being a dark color such as black, but the display window is not brightly displayed to make it stand out. . In addition, the color of the outer surface of the weighing machine case was often based on black in accordance with the background black or the like. 2. Description of the Related Art In recent years, a transmissive liquid crystal display device having a backlight has been used for various types of display. However, only the rear side of the liquid crystal display surface is illuminated, and the entire background of the display window is not made bright and conspicuous. In a weighing machine, the display part of the refueling amount is the most noticeable part. The characters in this part are clearly displayed, and at the same time, the background is brightened so that the entire display window can be conspicuous and the color of the background It is desired that the color of the outer surface of the weighing machine case can be selected from various colors according to the requirements.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device of a weighing machine in which the display of the weighing machine becomes clear and the entire background of the display window can be made bright and conspicuous.

[0005]

In order to achieve the above object, a display device for a weighing machine according to the present invention is provided on a front panel.
A window hole is formed, facing the back of this display window hole,
A window hole is formed in the center and the light diffuses to the front side.
It consists of a transparent light guide plate with a scattering sheet and a coloring sheet attached.
Display element for displaying a weighing value in the window hole
And face the edge around the transparent light guide plate
A lamp is arranged at a position. Also, the front panel
A display window is formed at the rear side of the display window.
To form a window hole in the center and diffuse light to the surface
An illumination plate consisting of a colored transparent light guide plate that has been diffused
And a display element for displaying a weighed value is exposed on the window,
A lamp at a position facing the end face around the transparent light guide plate.
It is arranged. And the lighting plate is on both sides
A transparent plate is adhered to. The display element is non-emitting
A light-type element, and the front surface is provided on an end face of a window hole of the transparent light guide plate.
An inclined surface facing the display element and a forwardly inclined surface are formed.
ing. The display element is a light-emitting element, and
A light shield is provided on the end face of the window of the light guide plate.

[0006]

According to the present invention, a display element for displaying a measured value is provided.
A transparent light guide plate with a window hole that allows
Paste the diffuser sheet and the colored sheet
Or a colored transparent light guide plate with diffused light
To brighten the background and make the entire display window stand out.
You. In addition, the transparent plate is stuck on both sides of the lighting plate
Prevents dust from accumulating on the edge of the window hole and reduces illumination light.
There is no light. In front of the end face of the transparent light guide plate window
By forming an inclined surface, the light around the window hole becomes brighter.
Can be framed. In the case of a luminous display element, the window hole
By providing a light shield on the end surface, the display is clearly visible.
You.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIG. 1 is a sectional view of a display device according to the first embodiment of the present invention, FIG. 2 is a front view of the display device according to the first embodiment of the present invention, and FIG.
1 is a perspective view of a weighing machine according to a first embodiment of the present invention.

In these figures, a weighing machine 11 according to an embodiment of the present invention is of a fixed type on the ground, and a weighing machine case 12 is installed on an island. This weighing machine case 12
The case is composed of an upper case 12a and a lower case 12b, and each side is integrally attached to the column 13. The lower case 12b houses therein a refueling mechanism including a refueling pump, a refueling motor, a flow meter, and the like (not shown). The front surface of the upper case 12a is a window panel 14. A front panel 15 is provided, and a display device 21 for displaying a refueling amount is arranged on the front panel 15. On the support 13,
A refueling hose 17 provided with a refueling nozzle 16 at the tip is attached.

In the front panel 15, a transparent window 15b made of acrylic resin or the like is formed in a rectangular display window hole 15a.
, And the display device 21 is disposed on the back side thereof. The display device 21 includes an illuminating plate 22 arranged facing the display window hole 15a, a lamp 23 illuminating the illuminating plate 22, a display element 24 arranged on the back side of the illuminating plate 22, It comprises an electric circuit (not shown) for driving the display element 24 and lighting the lamp 23.

The illuminating plate 22 is made of a transparent light guide plate 22a, such as an acrylic plate, which is relatively thick and has a rectangular area slightly larger than the display window hole 15b. Window 22b large enough to
Are formed. A diffusion sheet 22c for diffusing light is attached to the front side (front side) of the transparent light guide plate 22a, and a colored sheet 22d is attached to the surface of the diffusion sheet 22c. Light plate 22a
On the back side (rear side), a reflection sheet 2 that totally reflects light is provided.
2e is attached. The combination of the diffusion sheet 22c and the coloring sheet 22d on the front surface side of the transparent light guide plate 22a can be made into one sheet by using, for example, a colored acrylic plate subjected to light expansion processing. An elongated lamp 23 is disposed at a position facing the end face (upper and lower end faces) of the transparent light guide plate 22a. This lamp 23
A discharge tube driven by a high-frequency voltage such as an inverter circuit and having little flicker and a long life is used. The display element 24 is an element for displaying a measured value such as a refueling amount, and is, for example, a non-light emitting reflective liquid crystal display element.
A segment electrode structure for displaying numbers, English characters, and the like, the shape of which is elongated in the horizontal direction.

According to the display device 21 having the above structure, the illumination light of the lamp 23 enters from both end faces of the transparent light guide plate 22a,
The illumination plate 22 is colored on the entire surface of the display window 15a except for the window 22b by being reflected by the reflection sheet 22e, uniformly diffused by the diffusion sheet 22c, and transmitted through the coloring sheet 22d. To form a bright glowing background. Also, since the illumination light of the lamp 23 passing through the transparent light guide plate 22a leaks from the end face of the window hole 22b, the light is condensed on the display element 24 side to be used as direct illumination to the display element 24. Can be. Therefore, in the display device 21, the display of the refueling amount becomes clear and easy to see by illuminating the display element 24 and the display element 24 is illuminated, and the entire background of the display window 15a becomes bright and conspicuous. Can be. Furthermore, since the background of the display window hole 15a is colored and brightly lit, the color of the outer surface of the weighing machine case 12 can be freely selected in accordance with the background, so that the degree of freedom of design is increased, and It has become possible to change the entire machine 11 to one with a bright image.

FIG. 4 is a sectional view of a display device according to a second embodiment of the present invention. Parts corresponding to the first embodiment are denoted by the same reference numerals (the same applies to the following embodiments). In the display device 31 of this embodiment, a transparent plate 32 such as an acrylic plate is attached to both sides of the illumination plate 22 formed in the same manner as in the first embodiment, and the lamp 23 is opposed to the end surface of the illumination plate 22 and the illumination is performed. The display element 24 is arranged at a position facing the window hole 22 b on the back side of the plate 22. In this embodiment, the lighting plate 2
2 is provided with the transparent plates 32 on both sides, so that the window holes 22b
No dust accumulates on the end face of the display element 24, and the illuminating light of the display element 24 is not dimmed or the appearance is not impaired. In addition, since the transparent plate 32 can be given a background color or express characters or the like by diffusing and coloring a portion other than the window hole 22b, the diffusion sheet 22c and the coloring sheet 22d can be deleted.

FIG. 5 is an enlarged sectional view of a display device according to a third embodiment of the present invention. The display device 41 of this embodiment has a first
An inclined surface 42 facing the display element 24 is formed on an end surface of the window hole 22b of the illumination plate 22 configured in the same manner as in the embodiment. In this embodiment, the inclined surface 42 of the end face of the window hole 22b of the illumination plate 22 faces the display element 24 side, the area where the illumination light leaks increases, and the illumination light is directed to the display element 24 side. Effective lighting makes it easy to see.
By forming a forward inclined surface on the end face of the window hole 22b, a frame that shines brightly around the window hole 22b can be formed.

FIG. 6 is a sectional view of a display device according to a fourth embodiment of the present invention. In the display device 51 of this embodiment, a light-shielding body 52 such as a reflection sheet is provided on the end surface of the window hole 22b of the illumination plate 22 configured in the same manner as in the first embodiment.
A light-emitting display element 53 is disposed at a position where the lamp 23 is opposed to the end face of the lighting plate 22 and faces the window hole 22b on the back side of the illumination plate 22. In this embodiment, the light emitting display element 5
3 may be difficult to see when the brightness is low,
By preventing the illumination light from entering the window hole 22b with the light shielding body 52, the display can be clearly seen.

In each of the above embodiments, the weighing machine 11
The display device for displaying the refueling amount of the was described as an example,
The invention can be applied to at least a display device that displays a measured value at a service stand, and for example, can also be used as a display device for a charge amount of a charging device of an electric vehicle.

As the display element, any element other than the liquid crystal display element may be used, and the type of the display element may be any type of reflection type or light emission type, and is not limited to the embodiment.

[0017]

As described above, according to the present invention, a window is formed in a lighting plate disposed on a front panel, and a display element for displaying a weighing value is exposed to the window, thereby displaying an image. There is an effect that the display of the element becomes clear and a background in which the entire display window shines brightly can be made to stand out.

[Brief description of the drawings]

FIG. 1 is a sectional view of a display device according to a first embodiment of the present invention.

FIG. 2 is a front view of the display device according to the first embodiment of the present invention.

FIG. 3 is a perspective view of the weighing machine according to the first embodiment of the present invention.

FIG. 4 is a sectional view of a display device according to a second embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a display device according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a display device portion according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Weighing machine 12 Weighing machine case 13 Prop 14 Window panel 15 Front panel 15a Display window hole 21, 31, 41, 51 Display device 22 Illumination plate 22a Transparent light guide plate 22b Window hole 22c Diffusion sheet 22d Colored sheet 22e Reflection sheet 23 Lamp 24 display element 32 transparent plate 42 inclined surface 52 light shielding body 53 display element

Claims (5)

(57) [Claims] 1. A display window is formed in a front panel.
Form a window at the center, facing the back of the display window.
And a diffusion sheet that diffuses light to the front side
Arrange a lighting plate consisting of a transparent light guide plate with
A display element for displaying a weighing value is exposed in the window, and
The lamp is placed at a position facing the end face around the transparent light guide plate
Weighing machine display device. 2. A display window hole is formed in a front panel.
Form a window at the center, facing the back of the display window.
And diffused colored transparent conductor that diffuses light to the surface
An illuminating plate consisting of a light plate is placed and the weighing value is displayed in the window hole
End face around the transparent light guide plate.
Display device of a weighing machine with a lamp placed at a position facing the. 3. A transparent plate is attached to both sides of the lighting plate.
The display device of the weighing machine according to claim 1 or 2, which is combined.
Place. 4. The display device is a non-light emitting device.
And facing the display element on the end face of the window of the transparent light guide plate.
2. An inclined surface and a forward inclined surface are formed.
Or the display device of the weighing machine according to 2. 5. The display device according to claim 1, wherein the display device is a light emitting device.
2. A light shielding body is provided on an end face of a window of said transparent light guide plate.
Or the display device of the weighing machine according to 2.