JPH0421969B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a light emitting display device that diffuses or converges light emitted from a light emitting diode.

Structure of a conventional example and its problems FIG. 1 shows a general button telephone, in which 1 is a case of the telephone, and 2 is a panel, the surface of which is printed. This panel 2 has a portion 2' which is not printed and is transparent. 3 is the channel selection button. The light emitting display device in this telephone has the configuration shown in FIG. In FIG. 2, 4 is a light emitting diode, 5 is an elastic sheet, 5' is an operating piece provided on the sheet 5, 6 is a contact, and 7 is a printed circuit board on which the light emitting diode 4 and the contact 6 are provided. be. The circuit is configured so that when the contact 6 is turned on, the light emitting diode 4 lights up.

In this configuration, when the channel selection button 3 is pressed, the operation piece 5' comes into contact with the contact point 6 of the printed circuit board 7, which turns on the contact point 6 and causes the light emitting diode 4 to emit light. You can see the light of 4,
It can be determined whether the contact 6 is on or not.

However, in the above conventional example, since the light from the light emitting diode 4 directly passes through the transparent portion 2' of the panel 2, the light is not dispersed and the entire surface of the transparent portion 2' cannot be illuminated. For this reason, the range in which light emission can be confirmed is narrow. On the other hand, as shown in FIG. 3, the area of the light emitting surface can be expanded by providing a transparent diffusion component 8 that diffuses light between the panel 2 and the light emitting diode 4, but in this case, the number of components increases. Costs will increase.

OBJECTS OF THE INVENTION The present invention aims to eliminate the drawbacks of the above-mentioned conventional examples, and to widen the range of the light emitting surface without using separate parts.

Structure of the Invention In order to achieve the above object, the present invention integrates a part that covers a light emitting diode and diffuses or converges the light from the light emitting diode into a transparent elastic sheet provided with an operation piece that turns on the contact. By providing the light emitting part in the light emitting part, the effect of changing the range of the light emitting part can be obtained without using any separate parts.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 4, the same parts as in the conventional example are given the same numbers, and their explanations are omitted.

Reference numeral 9 is a transparent and elastic rubber sheet provided with an operating piece 9'. This sheet 9 is integrally provided with a diffusion section 9b having a convex spherical shape and covering the light emitting diode 4.

In the above configuration, by pressing the channel selection switch 3, the seat 9 is deformed, the operating piece 9' and the contact point 6 of the printed circuit board 7 come into contact, and the contact point 6 is turned ON.
The light emitting diode 4 emits light. light emitting diode 4
The light emitted from is diffused by the convex spherical diffusion portion 9b. The entire surface of the transparent part 2' of the panel 2 shines, and the light emitting diode 4 emits light, that is, the contact 6
You can easily check whether the switch is on or not.

In the previous embodiment, a case was described in which the sheet 9 was integrally provided with a convex spherical diffuser 9b, but as shown in FIG.
A similar effect can be obtained by providing the sheet 9 integrally with the sheet 9. Conversely, converging the light from the light emitting diode 4 can be easily achieved by changing the shape of the diffusion section.

Effects of the Invention As is clear from the above description, according to the present invention, light from a light emitting diode can be diffused or converged without using separate parts, and the structure is simple.
It is easy to confirm that the light emitting diode is lit, and the concave and convex portion is integrally placed on the light emitting diode to diffuse or converge the light. can make the light very bright.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional telephone, Fig. 2 is a sectional view of the same main part, Fig. 3 is a sectional view of another main part of the conventional telephone,
The figure is a sectional view of a light emitting display device for a telephone according to one embodiment of the present invention, and FIG. 5 is a sectional view of another embodiment. 4...Light emitting diode, 6...Contact, 7...Printed circuit board, 9...Sheet, 9a...Operation piece, 9
b, 9c... Diffusion section.

Claims (1)

[Claims] 1 A printed circuit board provided with a contact and a light emitting diode that emits light when the contact is turned on, and an operating piece that is provided on an elastic transparent sheet and turns on the contact when pressed through the sheet, The sheet is integrally provided with an uneven portion that covers the light emitting diode and diffuses or converges light from the light emitting diode, and a panel is provided so as to face the top surface of the sheet, and the light emitting diode of this panel faces the light emitting diode. A light-emitting display device that has a transparent part in the area where it is displayed.