JPH0565026U - Illuminated push button switch - Google Patents

Abstract

(57) [Abstract] [Purpose] By reducing the amount of movement of the operation button in the direction perpendicular to the operation direction, improving the operation feeling, and increasing the space for arranging the control electric parts, the device Is easy to miniaturize, and the illumination efficiency on the operation surface of the operation button is improved. [Constitution] The operation button 1 is a projection 1 formed on the outside of the collar 1a.
The function switch 5 mounted on the control board 4 is structured such that b is placed on the light guide plate 7, and a piano key type rotation operation can be performed around the light guide plate 7 as a center.
Is arranged to be pressed by the switch pressing projection 1c of the operation button 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an illuminated push button switch used for a remote control (hereinafter referred to as a remote control) transmitter used in electronic equipment. More specifically, the present invention relates to a structure for holding an operation button in an illuminated push button switch, and in particular, it aims to improve the movement amount of the operation button that performs a piano key type operation, the operation feeling, and the space factor.

[0002]

[Prior Art]

 Conventionally, the structure of the operation button of the illuminated push-button switch used in this type of remote control device is guided by the upper cover, and the control board holding the function switch is rotated as a fulcrum, and the rotation causes the function switch to rotate. Is generally used. Details of the illuminated push-button switch of such a conventional remote control device will be described with reference to FIGS. 4 and 5. FIG. 4 is a configuration explanatory view of a conventional remote control device, and FIG. 5 is a cross-sectional view of a main part.

The operation button 1 of the illuminated push-button switch is guided by the upper case 2 and can freely rotate and move in the A direction, but it is held in the B direction by the collar 1a so as not to come off, and the cushion 3 is used. It is always pressed against the upper case 2. Further, the operation button 1 has a protrusion 1b for rotation formed under the collar 1a placed on the control board 4, and is configured so as to perform a piano key type rotation operation around this. When the operation button 1 is rotated in this way, the function switch 5 mounted on the control board 4 is arranged to be pressed by the switch pressing protrusion 1c of the operation button 1. It is configured to send the specified operation contents to the main body. A light emitting element 6 is attached to the control board 4, and light emitted from the light emitting element 6 is guided by a light guide plate 7 arranged on the control board 4 to illuminate the operation surface 1d of the operation button 1. It is configured.

Reference numeral 9 indicates a seesaw button. The seesaw button 9 has operation surfaces 9a and 9b on both sides of a fulcrum protrusion 9c at the center, and performs a seesaw type operation. The holes 3a and 3b of the cushion 3 and the holes 7a and 7b of the light guide plate 7 are holes for penetrating the rotation projection 1b and the switch pressing projection 1c of the operation button 1, respectively. The lower case 8 holds the control board 4 by the protrusions 8a and is fitted with the claws 2a of the upper case 2 to form the entire apparatus.

[0005]

[Problems to be solved by the device]

 As described above, in the conventional remote control device, a fairly long protrusion that penetrates the cushion and the light guide plate is formed under the operation button, and it is configured to rotate around this protrusion. The operation button is sandwiched between the upper case and the control board, and the control board surface is generally not very smooth, so the fulcrum of the operation button does not slide easily and the operation feeling deteriorates. There was a problem. In addition, since the fulcrum is set on the control board as described above, the space for arranging the control electronic components is reduced, which may be an obstacle to downsizing the device, and the pivot fulcrum. Since the formed protrusion 1b penetrates the light guide plate 7, there is a problem that the light in the light guide plate 7 is blocked by the protrusion 1b, the illumination efficiency is reduced, and the illumination of each button is uneven. The present invention has been made in view of the above points, and its purpose is to improve the operation feeling by improving the sliding of the fulcrum of the operation button and to reduce the space of the circuit board by the operation button. By eliminating the above restrictions, it is possible to easily downsize the device incorporating the illuminated pushbutton switch and to improve the illumination efficiency of the operation surface of the operation button.

[0006]

[Means for Solving the Problems]

 The illuminated push-button switch of the present invention is a function switch which is pressed on a circuit board provided in the case by a pressing operation centering on a pivot fulcrum of the operation button protruding from the front of the case, and the operation button is illuminated. In the illuminated push-button switch, a light source for operating the light source and a light guide plate for guiding light from the light source to the operation button are arranged. The feature is that it is located outside the operation surface of the button.

[0007]

[Action]

 In the illuminated push-button switch having the above structure, the rotation fulcrum when the operation button is operated is located on the light guide plate located immediately below the operation button, and is provided outside the operation surface of the operation button. Therefore, the operation feeling is improved. Further, since no fulcrum is provided on the circuit board, there is no restriction on the wiring space on the circuit board due to the operation button. Therefore, it is advantageous for downsizing the device incorporating the illuminated push button switch. Furthermore, since the projection that forms the fulcrum of rotation of the operation button does not penetrate through the light guide plate, the light guided into the light guide plate is not blocked by the projection of the operation button, and the operation surface of the operation button Acts to increase lighting efficiency.

[0008]

【Example】

 An embodiment in which the present invention is applied to a remote control device will be described below with reference to the drawings. FIG. 1 is a plan view of a remote control device incorporating an illuminated push-button switch according to an embodiment of the present invention, and FIG. 2 is an explanatory view showing the configuration of the remote control device shown in FIG. 3 is a cross-sectional view of the main parts of the remote control device shown in FIG. The same numbers are given to the same components as the conventional configuration shown in FIG.

As shown in FIG. 1, in this type of remote control device, a seesaw-type button having operation surfaces 9a and 9b on both sides of a protrusion 9c forming a pivotal fulcrum like a seesaw button 9 and an operation button Although it is general that buttons that perform a piano key type operation coexist like the button 1, the present invention aims to improve the buttons that perform a piano key type operation. The operation button 1 is guided by the upper case 2 and can freely rotate and move in the A direction, but it is held in the B direction by the collar 1a so as not to come off, and is always pushed by the cushion 3 to the upper case 2. It is applied. In addition, the operation button 1 has a protrusion 1b formed on the outside of the collar 1a placed on the light guide plate 7, and is configured to be able to perform a piano key type rotation operation with the tip of the protrusion 1b as a rotation fulcrum. .. When the operation button 1 is rotated in this way, the function switch 5 mounted on the control board 4 is arranged to be pressed by the switch pressing projection 1c of the operation button 1. It is configured to send the specified operation details to the main unit. A light emitting element 6 is attached to the control board 4, and light emitted from the light emitting element 6 is guided by a light guide plate 7 arranged on the control board 4 to illuminate the operation surface 1d of the operation button 1. Is configured.

The hole 3a of the cushion 3 is a hole for penetrating the switch pressing projection 1c of the operation button 1, and the hole 3b of the cushion 3 and the hole 7b of the light guide plate 7 are the projection 3c for pressing the switch of the operation button 1. It is a hole for penetration. The lower case 8 holds the control board 4 by the projections 8a, and is fitted with the claws 2a of the upper case 2 to form the entire apparatus. Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and may be applied to, for example, an operation button of a cassette tape recorder, a video tape recorder, a compact disc player, or the like. Even if it is applied, the same effect as described above can be obtained.

[0011]

[Effect of the device]

 According to the present invention, since the protrusion serving as the fulcrum of the operation button is arranged on the light guide plate, not on the circuit board on which the function switch is mounted, the amount of movement in the direction perpendicular to the operation direction of the operation button is reduced. Moreover, since the position is formed outside the operation surface of the button, the operating force is reduced by the lever principle, and the operation feeling is improved. Further, since the rotation fulcrum of the operation button is not provided on the circuit board, a lot of space for arranging the control electronic components is provided on the circuit board, which is advantageous for downsizing the device. Furthermore, since the projection that forms the fulcrum of rotation of the operation button does not penetrate through the inside of the light guide plate, the light guided into the light guide plate is not blocked by the projection of the operation button, improving the lighting efficiency and This has the effect of making the illumination of the operation surface of the operation button uniform.

[Brief description of drawings]

FIG. 1 is a sectional view of a remote control device incorporating an illuminated push button switch according to an embodiment of the present invention.

FIG. 2 is a structural explanatory view of the remote control device shown in FIG.

FIG. 3 is a cross-sectional view of an essential part for explaining the operation of the remote control device shown in FIG.

FIG. 4 is a diagram illustrating a configuration of a conventional remote control device.

5 is a cross-sectional view of an essential part for explaining the operation of the remote control device shown in FIG.

[Description of symbols] 1 operation button 1a collar 1b protrusion 1c switch pressing protrusion 1d operation surface 2 upper case 2a claw 3 cushion 3a hole 3b hole 4 control board 5 function switch 6 light emitting element 7 light guide plate 7a hole 7b hole 8 bottom Case 8a Protrusion 9 Seesaw button 9a Operation surface 9b Operation surface

Claims (1)

[Scope of utility model registration request] 1. A function switch, which is pressed by a pressing operation centering on a rotation fulcrum of an operation button protruding from a front surface of a case, on a circuit board provided in the case,
A light source for illuminating the operation button, and an illumination type push button switch in which a light guide plate that guides light from the light source to the operation button is arranged, a protrusion serving as a fulcrum of rotation of the operation button is placed on the light guide plate, An illuminated push button switch characterized by being located outside the operation surface of the operation button.