JPH074739Y2 - Transmitted illumination type push button switch device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an improvement of a transillumination type push button switch device which is often used in light electrical appliances and the like.

[Summary of the Invention] The present invention provides a semi-transparent flexible sheet between a switch that opens and closes by a pressing operation and a transparent push button that presses the switch, and illuminates from the rear of the sheet, thereby providing a plurality of sheets. The push button switch device can be manufactured at low cost by uniformly illuminating the push button, improving the feel of the push operation, and simplifying the configuration.

[Prior Art] A push-button switch, which is often used in a low-power device such as a car radio and a car stereo, gives a high-class feeling to the device, so that the push-button is often made transparent and rearward illuminated.

However, if you simply make the push button transparent, the members inside the push button will be distorted so that it is unsightly,
Conventionally, as shown in FIG. 2, the front part of the push button 51 is a transparent pressing part 52 made of acrylic resin, for example, and an appropriate milky white translucent plate 53 made of synthetic resin is attached to the rear surface thereof. It was

Reference numeral 54 is a switch (not shown) drive rod.

[Problems to be Solved by the Invention] However, in the conventional transillumination type push button switch device, it is necessary to form each push button 51 from the transparent pressing portion 52 and the semitransparent plate 53 as described above. In addition, the number of manufacturing steps is large and the cost is high, and when the number of pushbuttons 51 is large, the transillumination effect is not uniform.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides an escutcheon having a plurality of through holes, and the escutcheon is inserted into the through holes from the rear side and protrudes to the front. A plurality of transparent pushbuttons, a semitransparent flexible sheet stretched on the rear side of the escutcheon and sandwiching the plurality of pushbuttons with the escutcheon, and a plurality of pushbuttons arranged on the rear side of the sheet. Multiple switches facing the button,
A lamp disposed on the rear side of the seat for illuminating the plurality of pushbuttons and a transillumination type pushbutton switch device are configured.

[Operation] In the present invention, the sheet blocks the members inside the device and the push buttons, diffuses light, and uniformly illuminates each push button.
In addition, the push button is biased forward so that it can be stably held on the escutcheon and the feeling of the pressing operation is improved.

[Embodiment of the Invention] FIG. 1 shows an embodiment of the present invention, in which a plurality of switches 2 and lamps 3 which are opened and closed by a pressing operation are provided on the front surface (the upper surface in FIG. 1) of a printed wiring board 1. It is fixed.

Immediately in front of each switch 2 and lamp 3, a milky white semitransparent flexible sheet 4 made of synthetic resin such as polyester resin is stretched in parallel with the printed wiring board 1.

The rear surface of the flat plate portion 5a of the T-shaped push button 5, which is made of a synthetic resin such as acrylic resin, comes into contact with the front surface of the seat 4, and the pressing portion 5b facing the front of the push button 5 is The parallel escutcheon 6 is inserted through a through hole 7 at a key portion and protrudes forward.

Each push button 5 is stably held in the through hole 7 of the escutcheon 6 by the urging of the seat 4, and the switch 2 is opened and closed by the pressing operation of the pressing portion 5b. Is good.

[Effect of the Invention] In the push button switch device of the present invention, one translucent sheet stretched between the push button, the switch and the lamp adversely affects the lighting effect of each transparent push button member in the device. As well as preventing the light from diffusing, each push button is beautifully and uniformly transmitted and illuminated, and due to the elasticity of the sheet, each push button is stably held on the escutcheon, so the push button holding member and forward Since the urging member of is not required and the push button can be molded at once with only transparent material, the push button switch device can be manufactured at low cost, and the feel of the push button is good due to the action of the sheet. Is.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the present invention, and FIG. 2 is a perspective view showing an example of a push button used in a conventional transparent push button switch device. 2 ... switch, 3 ... lamp, 4 ... sheet, 5 ...
Push button.

Claims (1)

[Scope of utility model registration request] 1. An escutcheon having a plurality of through holes, a plurality of transparent push buttons which are inserted into each of the through holes from the rear side of the escutcheon and project to the front side, and which are stretched at the rear side of the escutcheon. A semi-transparent flexible sheet that holds the plurality of pushbuttons with the escutcheon, a plurality of switches that are arranged on the rear side of the sheet and that face the plurality of pushbuttons, and a rear side of the sheet. A transillumination type push button switch device comprising a lamp for illuminating the plurality of push buttons.