JPH0664700A - Display for counter - Google Patents

Abstract

PURPOSE:To provide a clear display of a counter and light a whole background of a display window to be bright enough for an easy reading by a method wherein a window hole is formed in a lighting plate arranged on a front panel and a display element is positioned by the window hole. CONSTITUTION:Illuminating light of a lamp 23 entering from the both end surfaces of a transparent light introducing plate 22a is reflected on a reflecting sheet 22e and dispersed uniformly by a dispersing sheet 22c, and the dispersed light goes through a colored sheet 22d. Thus, a lighting plate 22 forms a brightly lighting background by coloring a display window 15a wholly except for a window hole 2b. The illuminating light of the lamp 23 which passes through the transparent light introducing plate 22a leaks from end surfaces of the window hole 22b. Therefore, the leaking light is collected on a display element 24 side and used for a direct illumination of the display element 24. Thus, in a display 21, the circumstances of the window hole 22b are lighted up. In addition, by the lighting up of the display element 24, a display of an oil feeding amount becomes bright enough to be read easily. Further, the whole background of the display window hole 15a also gets bright, and so, the display becomes remarkable.

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 refueling amount provided in a weighing machine for supplying gasoline or light oil to an automobile or the like, or charging provided in a charging device of an electric vehicle. It relates to a quantity display device.

[0002]

2. Description of the Related Art Conventionally, a weighing machine installed at 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, a fixed type on the ground has a weighing machine case installed on an island set on the ground, and a refueling amount display device is provided on the upper front surface in the weighing machine case. There are various types of oil supply amount display devices, and as the display system, there are a liquid crystal display system, a magnetic reversal plate system for displaying characters on a reversing plate, a plasma display system, and the like. Such a refueling amount display device uses a dark color mainly in black for the background of the display window so that the refueling amount is clearly displayed. Many use the colors that have been used.

[0003]

That is, in the conventional display device, the background is darkly displayed in a dark color such as black to clearly display the character portion, but it is not intended to make the entire display window bright and conspicuous. . In addition, in many cases, the outer color of the weighing machine case is based on black in accordance with the black color of the background. In recent years, a transmissive liquid crystal display device having a backlight has been used for various displays, but it illuminates only the back side of the liquid crystal display surface, and does not make the entire background of the display window bright and conspicuous. In the weighing machine, the part that shows the amount of refueling is the most noticeable part.The characters in this part are clearly displayed, and at the same time, the background can be made brighter to make the entire display window stand out, and the color of the background Therefore, it is desired that various colors can be selected for the color of the outer surface of the weighing machine case.

Therefore, an object of the present invention is to provide a display device for 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, in the display device of the weighing machine of the present invention, a window hole is formed in the illumination plate arranged on the front panel, and the display element is made to face the window hole. It is a thing. When the display element of this display device is a non-emission type element, the display element is illuminated with light emitted from the end face of the window hole of the illumination plate, and when the display element is a light emitting type element, the illumination is A light shield is provided on the end surface of the window hole of the plate.

[0006]

According to the present invention, since the display element is exposed to the window hole formed in the illumination plate, the periphery of the display element becomes brighter,
The entire background of the display window can be made bright and conspicuous. Further, the display becomes clear by illuminating the non-emission type display element with the light emitted from the end surface of the window hole of the illumination plate. Further, by providing the light shield on the end surface of the window of the illumination plate, the light emitting display element can be easily seen.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an embodiment shown in the drawings. 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 a first embodiment of the present invention, and FIG.
FIG. 1 is a perspective view of a weighing machine according to a first embodiment of the present invention.

In these drawings, the weighing machine 11 according to the embodiment of the present invention is of a fixed type on the ground, and the weighing machine case 12 is installed on the island. This weighing machine case 12
The case is composed of an upper case 12a and a lower case 12b, and the side parts thereof are integrally attached to the support column 13. The lower case 12b accommodates therein an oil supply mechanism including an oil supply pump, an oil supply motor, a flow meter, and the like (not shown), and the front surface of the upper case 12a is a window panel 14. A front panel 15 is provided, and a display device 21 that displays the amount of refueling is arranged on the front panel 15. In the pillar 13,
A refueling hose 17 having a refueling nozzle 16 at its tip is attached.

The front panel 15 has a rectangular display window hole 15a and a transparent plate 15b made of acrylic resin or the like.
Is provided, and the display device 21 is arranged on the back side thereof. The display device 21 includes a lighting plate 22 arranged to face the display window 15a, a lamp 23 for illuminating the lighting plate 22, and a display element 24 arranged on the back side of the lighting plate 22. It is composed of an electric circuit (not shown) for driving the display element 24 and lighting the lamp 23.

The illumination plate 22 comprises a transparent light guide plate 22a such as an acrylic plate formed in a rectangular shape having a relatively large thickness and a slightly larger area than the display window hole 15b, and the display element 24 is seen in the substantially central portion thereof. Window 22b of a size that allows
Are formed. A diffusion sheet 22c that diffuses light is attached to the front surface side (front surface side) of the transparent light guide plate 22a, and a coloring sheet 22d is attached to the surface of the diffusion sheet 22c. Light plate 22a
On the back side (back side) of the reflective sheet 2 that totally reflects light
2e is attached. The combination of the diffusion sheet 22c on the front surface side of the transparent light guide plate 22a and the coloring sheet 22d can be made into one sheet by using, for example, a light-extended colored acrylic plate. An elongated lamp 23 is arranged at a position facing the end faces (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, which has little flicker and a long life is used. The display element 24 is an element for displaying a measured value such as the amount of oil supply, and is, for example, a non-luminous reflective liquid crystal display element,
It is a segment electrode structure that displays numbers and letters, and its shape is formed to be long in the lateral direction.

According to the display device 21 having the above structure, the illumination light of the lamp 23 enters from both end surfaces of the transparent light guide plate 22a,
Since the diffused light is reflected by the reflection sheet 22e, uniformly diffused by the diffusion sheet 22c, and the diffused light passes through the coloring sheet 22d, the entire surface of the display window hole 15a except the window hole 22b of the illumination plate 22 is colored. Form a bright and glowing background. Further, since the illumination light of the lamp 23 that has passed 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 and used as direct illumination to the display element 24. You can Therefore, in the display device 21, the display of the amount of refueling becomes clear and easy to see because the periphery of the window hole 22b becomes bright and the display element 24 is illuminated, and the entire background of the display window hole 15a becomes bright and conspicuous. You can Furthermore, since the background of the display window hole 15a is colored and made to shine brightly, the color of the outer surface of the weighing machine case 12 can be freely selected according to this background, and the degree of freedom in design is increased, and the weighing is performed. It became possible to change the entire machine 11 to a bright one.

FIG. 4 is a sectional view of the display device portion of the second embodiment of the present invention. The parts corresponding to those in the first embodiment are designated 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 surfaces of an illumination plate 22 formed in the same manner as in the first embodiment, the lamp 23 is opposed to the end face of the illumination plate 22, and the illumination is performed. The display element 24 is arranged at a position facing the window hole 22b on the back side of the plate 22. In this embodiment, the illumination plate 2
By providing the transparent plates 32 on both sides of the window 2,
The dust will not be accumulated on the end face of the display element 24, and the illumination light of the display element 24 will not be dimmed or the appearance will not be spoiled. In addition, since the transparent plate 32 can be subjected to a diffusion process and colored in a portion other than the window hole 22b to give a background color and express characters and the like, the diffusion sheet 22c and the coloring sheet 22d can be deleted.

FIG. 5 is an enlarged sectional view of the display device portion of the third embodiment of the present invention. The display device 41 of this embodiment is the 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 similarly to the embodiment. In this embodiment, the inclined surface 42 of the end face of the window hole 22b of the illuminating plate 22 faces the display element 24 side, the area where the illumination light leaks is large, and the illumination light is directed toward the display element 24 side. Effective lighting makes it easier to see.
If a forwardly inclined surface is formed on the end face of the window hole 22b, a bright frame around the window hole 22b can be framed.

FIG. 6 is a sectional view of the display device portion of the 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 similarly to the first embodiment.
A light-emitting display element 53 is arranged at a position where the lamp 23 is opposed to the end face of and the window 23b on the back side of the illumination plate 22 is exposed. In this embodiment, the light emitting display element 5 is used.
Since it may be difficult to see when the brightness of 3 is low,
By preventing the illumination light from entering the window 22b by the light shield 52, it is possible to make the display clear and easy to see.

In each of the above embodiments, the weighing machine 11
The display device for displaying the amount of refueling was explained as an example.
It can be applied to at least a display device that displays a measured value at a service stand, and can also be used, for example, as a display device that displays 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 thereof may be any reflective or light emitting element, and is not limited to the embodiment.

[0017]

As described above, according to the present invention, a window hole is formed in the illuminating plate arranged on the front panel, and a display element for displaying a measured value is made to face the window hole, thereby displaying The display of the element becomes clear, and there is an effect that it can be made conspicuous by forming a bright background over the entire display window.

[Brief description of 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 portion of a second embodiment of the present invention.

FIG. 5 is an enlarged cross-sectional view of a display device portion of a third embodiment of the present invention.

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

[Explanation of symbols]

 11 weighing machine 12 weighing machine case 13 pillar 14 window panel 15 front panel 15a display window hole 21, 31, 41, 51 display device 22 lighting plate 22a transparent light guide plate 22b window hole 22c diffusion sheet 22d coloring sheet 22e reflection sheet 23 lamp 24 display element 32 transparent plate 42 inclined surface 52 light-shielding body 53 display element

Claims (3)

[Claims] 1. A display device of a weighing machine, wherein a window hole is formed in an illumination plate arranged on a front panel, and a display element is exposed in the window hole. 2. The display element is a non-emissive element,
The display device of a weighing machine according to claim 1, wherein the display element is illuminated with light emitted from the end surface of the window hole of the illumination plate. 3. The display device for a weighing machine according to claim 1, wherein the display element is a light-emitting element, and a light shield is provided on an end surface of the window hole of the illumination plate.