JPS5826427Y2 - Self-illuminated push button key - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the structure of an illuminated push-button electric key used in a button telephone or the like.

Conventionally, most pushbutton keys of this type have been mounted with a pushbutton key 1 having a switch section for circuit control and a light emitting diode 2 that visually displays the usage status of the key, as shown in Fig. 1. This is not only an impediment to miniaturization of devices, but also when there are multiple button rows, it is impossible to narrow the pitch between the button rows to less than the mounting space of the light emitting diodes. Since the light-emitting diodes are located between the buttons, when viewed from the front, they may be hidden by the front row of buttons, making it difficult to confirm that the light-emitting diodes are lit.

In addition, the user must press the corresponding button after confirming that the light emitting diode is lit during operation, which causes the user's line of sight to shift, making it difficult to handle.

The present invention solves the above-mentioned drawbacks by integrating a push-button telephone key and a display section that displays the use status of the key, and also makes the display section easy to see by integrating the push-button telephone key. It provides a button electric key,
This will be explained below with reference to the drawings.

Fig. 2 is a perspective view showing an embodiment of the present invention. 1 is a push button electric key with a transparent cover, 2 is a light emitting diode for visible display mounted inside, and 3 is for holding a plurality of buttons. 4 is a printed circuit board to which these button guides are attached.

FIG. 3 is a cross-sectional view taken along the line AA' in FIG.
Reference numeral 6 indicates a name strip for writing the classification of use of each button, 7 indicates a rubber switch for circuit control, on which the conductive rubber of 7a is integrally molded, and 8 indicates a button of the present invention, which is the same as the rubber switch 7. They are combined to form a pushbutton switch.

4a is a copper foil terminal that comes into contact with the conductive rubber 7a to form a circuit when a button provided on the printed circuit board 4 is pressed.

FIG. 4 is a perspective view of a button used in the push-button electric key of the present invention, which is characterized by having a space section cut out in the shape of a 7 on one side of the square button.

By pressing the pushbutton key 1, the rubber switch 7 having the conductive rubber 7a shown in FIG. are shorted to form a circuit.

When this pressing force is released, the pushbutton key 1 is restored to its original state by the repulsive force of the rubber switch 7, and the circuit returns to the disconnected state.In this way, the switch section is constructed.

The light emitting diode 2 is placed at a lower central position 8C of the space cut out in the shape of a 7 in the push button 8 shown in FIG.

The leads are soldered to the printed circuit board 4 as shown in FIG. 3 to supply power.

Further, the distance between the apex of the light emitting part 2a and several protrusions 5a for diffuse reflection provided on the inner surface side of the button cover 5 is set to be slightly larger than the button stroke.
The apex of a is located slightly above the edge 3a of the button guide 3.

FIG. 5 is a perspective view showing the assembly position of the push-button electric key of the present invention constructed as described above.

In the push button key of the present invention, the push button 8 can be pressed down while the light emitting diode 2 remains fixed, and the light emitting display section can be more easily seen than before, making the key telephone easier to handle.

That is, the light from the light-emitting diode 2 mounted in the above-mentioned position is first seen directly from the light-emitting portion 2a when the user's line of sight passes through the transparent button cover in the case of a tabletop type, which is the most commonly used button telephone. Not only can the light be seen directly, but also the reflected light from the spatial rear surface 8d of the pushbutton 8 is added, and the amount of light is increased so that even in a bright place, the lighting can be easily confirmed.

Further, when viewed from the left and right directions in FIG. 2, since the button 8 has tapers 8a and 8b, it is possible to see light reflected from the taper portions 8a and 8b as well as direct light up to the angle of the taper.

Furthermore, when viewed from directly above, the light emitting section 2a appears to be magnified due to the lens effect due to the uneven portion 5a of the button cover 5, and even when viewed from the rear side in FIG. The lighting can be confirmed by the refracted light.

As explained above, according to the present invention, the above-mentioned drawbacks are solved by mounting the light emitting diode, which is a visible display component, inside the button, and the ease of use is optimized, and miniaturization is also achieved. Not only that, but the visibility of the visual display is such that when a button telephone is normally used, when a user operates a button telephone installed on a desk while sitting, the user's line of sight looks directly at the light emitting diode itself. Not only is this possible due to the open pushbutton with a 7-shaped notch on the front side, but the lighting can also be easily confirmed from any angle without damaging the appearance. Not only that, but the effect is great when applied to other devices as well.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the conventional method, Fig. 2 is a perspective view showing an embodiment of the present invention, Fig. 3 is a sectional view taken along line A-A' in Fig. 2, and Fig. 4 is a perspective view showing an embodiment of the conventional method. Perspective view of the push button of the present invention, No. 5
The figure is an exploded perspective view showing main parts of an embodiment of the present invention. The main symbols cited in the explanations in the figures are as follows. 1: Push button electric key, 2: Light emitting diode, 2a: Light emitting diode apex, 3: Button guide, 4 Niblint board,
5: Button cover, 6: Name strip, 7: Rubber switch, 8
:Push button.

Claims (1)

[Scope of utility model registration request] A pushbutton switch consisting of a pushbutton and a rubber switch that has a recessed part and a conductive part formed in the recessed part, a light emitting diode built into the pushbutton, and a button guide through which the pushbutton is inserted. and a transparent button cover that covers the push button protruding from the guide via an indicator strip.The push button has a square shape, and its negative side is cut out to form a Y-shape. A light-emitting part of a light-emitting diode is arranged in the lower central part of the space, and an unevenness is provided on the back surface of the button cover located above the apex of the light-emitting part, so that the apex of the light-emitting part and the button cover are The light emitting diode is built into the push button so that the distance from the uneven part on the back surface is larger than the stroke of the push button switch and the position of the apex of the light emitting part is higher than the height of the edge of the button insertion hole of the button guide. Features a self-illuminated push button electric key.