JPH04498Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is a function type display device that displays which function a so-called double function button, in which one button has two functions, is currently working. Regarding.

BACKGROUND TECHNOLOGY In a system in which multiple audio devices such as those installed in a car, such as a cassette deck and a radio, are operated using a single set of buttons, it is difficult to determine whether the button is currently in a mode that allows the cassette deck to be operated or whether the radio can be operated. It is necessary to inform the operator whether the device is in a mode in which it can be operated.

For this purpose, conventionally, for example, as shown in FIG. 11, characters for identifying the function type for radio (AM/FM, preset numbers 1 to 5) are arranged on the panel 7 above the buttons 1 to 6, and Function type identification letters (PROG, B, APS, SKIP, REP) for the cassette deck are arranged on the panel 7 below buttons 1 to 6, and the letters above are lit when in radio mode, and when in cassette mode. On the contrary, the letters at the bottom were lit.

However, in such a configuration, the positional relationship between the characters and the buttons is reversed between the radio mode and the cassette mode, resulting in poor operability, especially at night. Further, it is necessary to secure space for displaying characters on the panels 7 above and below the button, and there is a drawback that the button cannot be made larger.

Problems that the invention aims to solve This invention solves these conventional problems, and its purpose is to make the button larger,
Another objective is to improve operability at night.

Means for Solving the Problems In order to solve the above problems, the present invention provides a device for displaying the function type of a double function button, in which first and second light sources are selectively turned on;
a first light guide plate that guides the light from the first light source and illuminates one of the translucent characters for identifying the function type provided on the double function button from behind the button; a second light guide plate for illuminating the other functional type identification translucent characters provided on the double function button from behind the button;
shielding that prevents the illumination light from the second light guide plate from entering the other transparent character for identifying a function type and the illumination light from the second light guide plate from entering the one transparent character for identifying a function type; A board is provided.

Function For example, one of the translucent characters for identifying the function type is for radio, the other translucent character for identifying the function type is for cassette deck, and when the first light source is lit in radio mode, one of the functional types can be identified. When the second light source is turned on in the cassette mode, only the other translucent character for function type identification becomes bright. Since the translucent characters for identifying the function type are provided on the button itself, the outer shape of the button can be increased, and since the operating section itself has a display section, operability at night is improved.

Embodiment FIG. 1 is a plan view of an embodiment of the present invention.
-15 are double function buttons, which are fitted into openings provided in the housing 16. Button 10-1
4 is provided with translucent characters for identifying the function type in two upper and lower rows, and the button 15 is provided with translucent characters for identifying the function type only in the upper row. Upper character (AM/
FM, preset numbers 1 to 5) are brightly illuminated from behind buttons 10 to 15 when in radio mode.
At this time, the characters in the lower row (PROG, B, APS,
SKIP, REP) are not illuminated. In the cassette mode, on the other hand, the characters on the lower row of buttons 10 to 14 are brightly illuminated from behind the buttons, and the characters on the upper row are not illuminated. For example, when a cassette pack is inserted into the cassette deck, the cassette mode is entered and the characters on the lower row are illuminated, and if buttons 10 to 14 are pressed at this time, the function corresponding to the character on the lower row is executed.
Further, for example, when the cassette pack is ejected and the power switch of the radio is turned on, the upper row of characters lights up, and if buttons 10 to 15 are pressed at this time, the operation corresponding to the function indicated by the upper row of characters is executed.

2 is a plan view with the housing 16 of FIG. 1 removed, and FIG. 3 is a plan view with the buttons 10 to 15 removed. In the figure, 17 is a pedestal, and buttons 10 to 15, a first light guide plate 18, and a second light guide plate 19 are mounted on this pedestal 17.

The pedestal 17 is made of ABS or the like by integral molding, and has a structure as shown in the external perspective view of FIG. 4, for example. 17a is a groove into which the first light guide plate 18 is inserted, 17b is a groove into which the second light guide plate 19 is inserted, and a shielding plate 19c is interposed between both grooves 17a and 17b. On both sides of the grooves 17a and 17b, there are convex portions 17d and 17e with flat surfaces, and a cushion material 20 such as urethane is adhered onto one convex portion 17e. In addition, through holes 21a to 2 that pass through this cushion material 20 and the convex portion 17e below it.
1l is provided. The notch 17f provided in the base 17 is a place where the first light source 22 is inserted, and the through hole 17g is a place where the second light source 23 is inserted. The pedestal 17 and the housing 16 have an engaging portion 17h
However, the inner surface of the housing 16 and the convex portions 17d, 1
7e is spaced apart by the height of the projection 17i, and a portion of the buttons 10 to 15 are inserted into this space.

The first light guide plate 18 is made by integrally molding a transparent resin or the like, and has a structure as shown in the external perspective view of FIG. The notch 18a at the end is where the first light source 22 is inserted, and the light emitted from the light source 22 enters the light guide plate 18 from the surface of the notch 18a,
It is reflected from each surface and propagated to the other end. A total of six convex portions 18b to 18 are provided on the main surface of the light guide plate 18.
g, and its top surface is processed into a diffusely reflective surface. The reason why the thickness of the light guide plate 18 is made thinner as the distance from the light source increases is to make the brightness of the top surfaces of the convex portions 18b to 18g approximately equal.

The second light guide plate 19 is also made by integrally molding a transparent resin or the like. FIG. 6 is an external perspective view of the light guide plate 19, with a partially cut-out through hole 19 provided at one end.
a is a place where the second light source 23 is inserted, and the emitted light from the light source 23 enters the inside of the light guide plate 18 from the inner surface of the through hole 19a, and a total of six convex portions 19b provided on the main surface.
Brightly illuminates the top surface with a ~19g diffused reflection surface.

The first light guide plate 18 and the second light guide plate 19 have a convex portion 18b and a convex portion 19 when mounted on the pedestal 18.
b, the convex portion 18c and the convex portion 19c, the convex portion 18d and the convex portion 19d, the convex portion 18e and the convex portion 19e, the convex portion 18f and the convex portion 19f, and the convex portion 18g and the convex portion 19g, respectively. A shielding plate 1 is also provided between the opposing convex portions.
The shielding plate 17b is provided with unevenness so that the shielding plate 17b is interposed therebetween.

Taking the button 13 as an example, the buttons 10 to 15 have structures as shown in the external perspective view of FIG. 7 and the bottom view of FIG. 8, for example. All buttons are integrally molded from ABS, etc., and are hollow inside. The entire surface of the button is plated with an impermeable material, except for the letters (2, SKIP) arranged in two rows on the button surface and the back surface of the hollow part facing the button surface. That is, it is plated with characters removed. Of course, it is also possible to obtain translucent characters by other methods such as two-color molding. The hollow part has a protrusion 13a between the two-stage characters, and when the button is attached as shown in FIGS. 1 and 2, the protrusion 13a faces the shielding plate 17b. Two posts 13b and 13c are erected at the lower end of the back of the button 13.
The posts 13b and 13c are used to press the switch as described later. Further, at the front end of the button, there are protrusions 13d and 13e having a substantially circular cross section, and the button rotates using these as a starting point.

Each of the buttons 10 to 15 is placed on a pedestal with two posts inserted into through holes 21a to 21l provided on the pedestal 18. At this time, the hollow part of the button 10 has protrusions 18b and 19b, the hollow part of the button 11 has protrusions 18c and 19c, the hollow part of the button 12 has protrusions 18d and 19d, and the hollow part of the button 13 has protrusions. 18e and 19e are inserted into the hollow part of the button 14, protrusions 18f and 19f are inserted into the hollow part of the button 15, and protrusions 18g and 19g are inserted into the hollow part of the button 15, respectively.

FIG. 9 is a sectional view of a main part taken along the line XX in FIG. 1. The two posts 12a of the button 12 are the pedestal 1.
7, and the edge of the lower surface of the button including the protrusion 12b at the front end is connected to the housing 16 and the pedestal 17.
It is installed by being loosely inserted into the gap between the protrusions 17d and 17e. A board 30 is located below the post 12a.
There is a switch 31 which is soldered etc. to the button, and when the button is pushed down against the repulsive force of the cushion material 20, the post 12a pushes the switch 31, and the switch 31
turns on. Two switches are provided for each of buttons 10 to 14, and one switch is provided for button 15 in this embodiment.
switches are provided.

FIG. 10 is a block diagram showing an example of the electrical configuration of this embodiment, in which switches 40 and 41 are for button 10,
Switches 42 and 43 are for button 11, switch 44,
45 is for button 12, switches 46 and 47 are for button 13
Switches 48 and 49 are for button 14, switch 5
0 is for button 15. Each switch is connected to a microcomputer 52 via an input interface 51. Further, an output interface 53 is connected to the microcomputer 52, and controls whether transistors 54 and 55 are turned on or off. 1st
The light source 22 is turned on when the transistor 54 is turned on.
_VB , the second light source 23 is connected to the transistor 5
Lights up when 5 is on. microcomputer 5
2 generates a signal 56 for controlling a cassette deck and a radio (not shown). When in the radio mode, the transistor 54 is turned on to light the first light source 22, and the switches 40, 42,
Read the status of 44, 46, 48, 50. on the other hand,
In the cassette mode, the transistor 55 is turned on, the second light source 23 is turned on, and the switch 41,
Read the status of 43, 45, 47, 49.

Although the embodiments of the present invention have been described above, the present invention is not limited thereto, and various other additions and changes can be made. For example, if the shielding plate 17c is
It is also possible to fix it to the button side instead of the 7 side.

Effects of the Invention As explained above, according to the present invention, for example, if one of the translucent characters for identifying the function type is used for radio, and the other translucent character for identifying the function type is used for cassette deck, in radio mode. When the first light source is turned on, only the translucent characters for radio function type identification become bright, and when the second light source is turned on in cassette mode, only the translucent characters for cassette function type identification become bright, and the double phantom It becomes possible to display which function the button is currently working with. In addition, since the translucent text for identifying the function type is provided on the button itself, the outer shape of the button can be made larger compared to the conventional case where the text is placed on the panel, and the display section is located on the operation section itself. Therefore, at night, all you have to do is reach out to the brightly lit letters and press the button, which has the effect of improving operability.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a plan view with the housing 16 of Fig. 1 removed, and Fig. 3 is a plan view of the embodiment of the present invention with the buttons 10 to 15 removed. A plan view, FIG. 4 is an external perspective view of the pedestal 17, FIG. 5 is an external perspective view of the first light guide plate, FIG. 6 is an external perspective view of the second light guide plate, and FIG. 7 is an external perspective view of the button. 8 is a bottom view of the button, FIG. 9 is a sectional view of the main part taken along the line X-X in FIG. 1, FIG. 10 is a block diagram of the main part showing an example of the electrical configuration of the present invention, and FIG. The figure is an explanatory diagram of a conventional example. 10 is a double function button, 17c is a shielding plate, 18 is a first light guide plate, 19 is a second light guide plate,
22 is a first light source, and 23 is a second light source.

Claims (1)

[Scope of utility model registration request] A device for displaying the function type of a double function button, which includes first and second light sources that are selectively turned on, and one light source provided on the double function button that guides the light from the first light source. a first light guide plate that illuminates the translucent characters for function type identification from behind the button; and another light guide plate for guiding the light from the second light source provided on the double function button for identifying the function type. A second light guide plate illuminates the characters from behind the button, and the illumination light from the first light guide plate enters the other translucent character for function type identification, and the illumination light from the second light guide plate illuminates the button. 1. A function type display device for a double function button, comprising a shielding plate that prevents light from entering the transparent character for identifying the function type on one side.