JPS6322593Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a push button structure for a channel selection device such as a television receiver, particularly a channel selection device that uses a variable capacitance diode as a tuning element and is equipped with a circuit for electronically switching channels. be.

In the conventional push button structure of this type, as shown in FIG. Panel 1 corresponds to each push button 3
A switch 4 for generating a channel selection signal is disposed inside the push button 3. At this time, the push button 3 is regulated in the upward direction (front direction) by the flange 3b coming into contact with the lower surface of the panel 1. At the same time, the downward direction is supported by being biased upward by the elastic frame 5 of the switch 4, and as a result, the state shown in the figure is maintained. Therefore, if the push button 3 is pushed in from this state, the elastic frame 5 is deformed and the operating piece provided inside moves, and the switch is turned on. ) Then, the push button 3 is again urged forward by the standing leg movement of the elastic frame 5, resulting in the state shown in FIG. Although not shown in FIG. 1, it goes without saying that a mechanism for holding the push button 3 is also provided.

However, the conventional structure described above requires the use of a special switch 4, which increases the cost.Moreover, this switch 4 must be located at the center inside the push button 3 to perform the above-mentioned function, so it is difficult to connect the push button mechanism and channel. The disadvantage is that it cannot be integrated with a display mechanism.

In addition, the characters that indicate the functions of conventional push buttons are
As disclosed in Utility Model Application Publication No. 52-149273 (H01H13/14) and Utility Model Application Publication No. 54-141482 (H01H13/70), a transparent resin material that also serves as the pressing surface of the push button or the pressing part. It is printed directly on the back side of the thin plate. Therefore, when changing the function or arrangement of the push buttons, it is necessary to newly provide the button unit and the thin plate each time.

In view of these points, the present invention devises a mechanism for holding and restoring the push button, thereby eliminating the need for a special switch such as the one described above, and integrating the push button mechanism and display mechanism to save space. This makes it easy to change the function display.

The present invention will be described in detail below according to embodiments shown in the drawings.

In FIG. 2, reference numeral 6 denotes a transparent push button, and is arranged so that only the head 6a is exposed from the front panel 7 and does not come out from the front panel 7. Reference numeral 8 denotes a light guiding means for guiding the light from the light emitting diode 10 arranged on the internal printed circuit board 9 to the outside, and a holding part 8a for holding the channel letter film holder 11.
12, which has a transparent portion 12a and a portion 8b parallel to the front panel 7, has a slit that allows the separation portion 12b including the transparent portion 12a to be displaced in the direction of protruding from the sheet surface (perpendicular direction). This flexible sheet is provided between the front panel 7 and the channel character film holder 11, but this sheet can be used not only for one channel but also for multiple channels. Similar consideration is given to each channel. That is, as shown in FIG. 4, this sheet 12 consists of a single sheet in which a plurality of channel corresponding parts are formed, and the separation part 1 including the transparent part 12a
The left and right sides of 2b are slits 13 from the seat base 12c.
The upper and lower portions are completely separated by the bending extension of the slit 13 to form the seat base 12c.
A slit 15 is formed to form a connecting portion 14 to the sheet and to facilitate displacement in the vertical direction from the sheet surface.
is provided. A desired restoring force can be obtained as needed by increasing or decreasing the width or number of the slits or by increasing or decreasing the thickness of the sheet. Since the sheet 12 is designed to restore the push button 6, the switch 16 for generating the channel selection signal may be provided in a position that does not interfere with the channel display in the present invention, and in the illustrated embodiment, the switch 16 is particularly Sixteen operating pieces 17 are arranged at the corners so as to be driven as the push button 6 is pressed.
When selecting a channel, push the push button 6 with the finger 18 and move the operating piece 17 to drive the switch 16 as shown in FIG. When the channel corresponding to the push button 6 is selected, the light emitting diode 10 lights up to display that channel.

In the illustrated embodiment, the channel letter film is stored in a holder 11, but if the channel letter film is inserted into and removed from the push button 6, the holder 11 can be removed.

According to the present invention, since the restoration of a plurality of push buttons 6 is performed using a single sheet 12 placed inside the push buttons 6, a special switch with the function of restoring the push buttons is used as in the past. There is no need to use it. In addition, since the channel number of the push button 6 is displayed using a channel letter film placed inside the push button 6, there is no need to take up space on the front panel 7 for displaying the channel number, which saves space. I can see the transformation. Moreover, when changing the channel function of the push button 6, the display of the channel number can be easily changed by simply replacing the channel character film stored in the holder 11, and there is no need to replace the push button 6, resulting in a high cost. It is also advantageous.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing a conventional push button structure. FIG. 2 is a schematic sectional view showing the push button structure of the present invention, and FIG. 3 is a schematic sectional view of the push button structure in different states. FIG. 4 is a plan view of the sheet used in the present invention. 6...Push button, 7...Front panel, 8...Light guide means, 8a...Holding section, 8b...Portion parallel to the front panel, 9...Printed circuit board, 10...Light emitting diode, 11...Holder , 12... Sheet, 1
2a...transparent part, 12b...separation part, 12c...
seat base.

Claims (1)

[Scope of utility model registration request] In the structure of a push button that drives a channel selection signal generation switch by pressing, a front panel, a flexible sheet in which a plurality of separating parts each having a transparent part are separated from a base part by a slit except for a connecting part; a light guiding means having a holding part and a part connected to the holding part and parallel to the front panel; a transparent push button;
It consists of a holder into which a channel character film can be inserted and removed, and a light emitting diode attached to a printed circuit board, the holder is held in the holding part of the light guide means, and the transparent part of the sheet is placed on the front side of the holder. the light-emitting diode is located in an opening on the opposite side of the light guide means from the front panel, the base being sandwiched between a parallel portion of the light guide means and the front panel; When the push button is pressed, the separation part of the sheet is elastically displaced from the base part by the slit, and the light emitting diode lights up, and when the push button is released, the A push button structure characterized in that a separation part is configured to return to its original position by elastic force.