JPH0334784Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention is a method of forming characters and characters on a display panel by irradiating light from behind the display panel.
The present invention relates to a display device that illuminates information such as symbols, and relates to a display device suitable for illumination with a directional light source such as an LED light source.

[Technical background of the invention]

The conventional display device of FIGS. 3 and 4 is shown. 1
1 is a housing of a display device, and a display panel 2 is provided in the upper part of this housing 1, and a substrate 3 is provided in the lower part. The display panel 2 has a surface of a translucent resin plate 4, excluding information portions 6 such as characters and symbols.
A light-shielding layer 5 is provided by covering it with a non-light-transmitting film by a method such as printing. In this example, "ON" and "OFF" are shown as information 6. In addition, an LED (light source) 7 is provided at a position facing the information 6 on the board 3, and the information 6 is illuminated by irradiating light toward the back surface of the remaining panel 2.
It is configured to irradiate. In this case the LED
The irradiation light has directionality, for example, information 6
When the LED 7 positioned opposite to "ON" is lit, only "ON" can be illuminated, and when the LED 7 positioned opposite to "OFF" is illuminated, only "OFF" can be illuminated. can.

[Problems with background technology]

However, in the conventional display device described above, since the illumination light of the LED has directionality, the illumination of the information 6 is the illumination indicated by the arrow a in FIG. It could only be done with light. Therefore, if the viewer is located outside the range of angle A of the illumination light that travels straight toward the information 6, it will not be possible to see the information 6 even when it is actually illuminated. Nakatsuta.

[Purpose of invention]

The present invention was developed in view of the above-mentioned drawbacks of the conventional display devices, and even when information is illuminated with directional light such as LED irradiation light, it can illuminate a much wider range than conventional display devices. An object of the present invention is to provide a display device that allows information illumination to be visually recognized.

[Summary of the idea]

Therefore, in the display device of the present invention, one side has a shape that represents information such as characters and symbols, and the side surface has a translucent member that is inclined in a direction that spreads toward the other surface opposite to the one side, and the translucent member By integrally forming a display panel with a light reflective member surrounding the side surface of the member, and by providing a light source facing the other surface of the translucent member, the light from the light source that illuminates the other surface is reduced. A part of the light is reflected from the side surface and guided to the one surface, thereby achieving the above object.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 and 2.

Reference numeral 10 denotes a housing of the display device, and a display panel 11 is provided at the upper part of this housing 10, and a substrate 12 is provided at the lower part.

The display panel 11 is integrally formed with a light-transmitting member 13 made of a material such as resin having light-transmitting properties and a light-reflecting member 14 made of a material such as non-light-transmitting resin having light-reflecting properties. There is. Translucent member 13 is flat plate 1
6 and a display section 17 formed to protrude from the flat plate 16, and one surface (display surface) 18 of the display section 17 has a shape representing information such as characters and symbols (in this embodiment, "ON", "OFF" is shown), and the side surface 19 of the display section 17 is inclined in the direction of expanding toward the light receiving surface (other surface) 20 facing the display surface 18. Further, a light reflective member 14 formed integrally with the light transmitting member 13 is formed so as to surround the side surface 19 of the display section 17. This light reflective member 14 is
In order to efficiently reflect light on the side surface 19 when the LED 23 (described later) irradiates light onto the light receiving surface 20, it is made of a resin such as white that is non-transparent and has high reflection efficiency. ing.

Reference numeral 23 denotes an LED (light source) provided on the substrate 12, and is positioned at a position corresponding to the display surface 18 and facing the light receiving surface 20. and,
For example, depending on the directionality of the light emitted by the LED 23,
When the LTD 23 corresponding to the display surface 18 representing "ON" is lit, only the display surface 18 representing "ON" can be illuminated. Note that 24 is a decorative plating layer on the surface of the display panel 11.

Next, the operation of this embodiment will be explained with reference to FIG. 2.

For example, when illuminating the display surface 18 representing "OFF", the light source corresponding to the display surface 18 representing "OFF"
The LED 23 is lit. At this time, due to the nature of the light emitted by the LED 23, the light is emitted mainly only to the light-receiving surface 20 of the translucent member 13 corresponding to the "OFF" state. However, unlike conventional display devices, the display surface 1
The irradiation light guided to 8 is divided into irradiation light indicated by arrow a that goes straight toward the display surface 18, and irradiation light indicated by arrow b that is reflected from the side surface 19 and goes straight toward the display surface 18. exists. Therefore, the viewer of the display device can see the illumination of the display surface 18 not only within the range of angle A but also when located within the range of angle B where the irradiated light reflected by the side surface 19 is guided.

In this embodiment, the light reflective member 14 is made of a resin such as a white material with good reflection efficiency, but it is not limited to this. For example, a reflective layer (white layer) may be formed on the side surface 19. You may do so. Furthermore, although the translucent member 13 is composed of a flat plate 16 and a display section 17, it is natural that the above-described effect can be obtained even if the translucent member is composed of only the display section 17. Further, the shape of the LED may be hemispherical or angular.

[Effect of idea]

As mentioned above, in the display device of the present invention,
Even when the display surface is illuminated with a directional light source such as an LED light source, the illumination of the display surface can be viewed from a much wider range than in conventional display devices.

[Brief explanation of the drawing]

FIG. 1 is a perspective view illustrating the display device of the present invention;
2 is a cross-sectional view taken along the line -- in FIG. 1, FIG. 3 is a perspective view illustrating a conventional display device, and FIG. 4 is a cross-sectional view taken along the line -- in FIG. 11...Display panel, 13...Translucent member, 1
4... Light reflective member, 17... Display section, 18...
Display surface (one side), 19... side surface, 20... light receiving surface (other side), 23... LED (light source).

Claims (1)

[Scope of utility model registration request] One side has a shape representing information such as letters and symbols, and the side surface includes a light-transmitting member that slopes in a direction that spreads toward the other surface opposite to the one surface, and a light-reflecting member that surrounds the side surface of the light-transmitting member. a display panel integrally formed with a display panel, and a light source provided opposite to the other surface of the translucent member, and a part of the light from the light source that illuminates the other surface is reflected by the side surface. A display device characterized in that the display device is adapted to be guided to the one surface.