JPH0142896Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch device having a display section having a plurality of display sections arranged side by side from lower to upper.

Conventionally, setting switch devices for setting temperature, speed, etc. in automobile air conditioners, automatic constant speed driving systems, etc., have conventionally displayed settings by lighting up a lamp built into the push button at the same time as a push button is pressed. However, this type of switch has a complicated switch structure, is large in size, and has poor visibility.

The present invention was devised in view of the above circumstances, and its purpose is to provide a switch device that has a simple switch structure, can be downsized, and has excellent visibility and operability.

A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, the overall configuration will be described with reference to FIGS. 1 and 2. Reference numeral 1 denotes a switch case in the shape of a horizontally long rectangle with an open bottom surface, and a through hole 2, also in the shape of a horizontally long rectangle, is formed in the top surface of the switch case. Reference numeral 3 denotes a first printed circuit board disposed in the upper part of the switch case 1, and on the upper part of this, 12 light emitting diodes 4 ₁ to 4 ₁₂ (see Fig. 3), which constitute a plurality of display sections, are arranged. A display section 6 supported by a support case 5 is provided. Reference numeral 7 denotes a switch section disposed close to and in close contact with the display section 6, which includes a transparent substrate 8 made of glass or the like, a spacer 9 made of an insulating material having a light-shielding property, and a transparent The spacer 9 has a through hole 2 in the switch case 1.
Twelve rectangular windows 11 ₁ to 11 ₁₂ are formed in a straight line facing each other, and transparent transparent windows are formed on the upper surface of the substrate 8 in one-to-one correspondence to the windows 11 ₁ to 11 ₁₂ .
Twelve unit electrodes are attached by printing or the like, and a transparent common electrode is attached to the lower surface of the sheet 10 over almost the entire area, and these common electrodes and the 12 unit electrodes each form a window. Twelve switch elements 12 ₁ to 12 ₁₂ (see FIG. 3) corresponding to 11 ₁ to 11 ₁₂ are formed. Therefore, each of the window portions 11 ₁ to 11 ₁₂ in the switch portion 7 has translucency. The light emitting diodes 4 ₁ to 4 ₁₂ in the display section 6 are connected to the window sections 11 _{1 to 4 12} , respectively.
11 _{and 12} from below. Further, the first printed circuit board 3 has wiring patterns connected to each terminal of the light emitting diodes 4 ₁ to 4 ₁₂ and the switch elements 12 ₁ to 12 .
₁₂ and wiring patterns connected via connectors 13 are formed, respectively. Reference numeral 14 denotes a second printed circuit board disposed at the lower part of the switch case 1 at a predetermined distance from the first printed circuit board 3, on which an electric circuit pattern is formed and a large number of circuit boards are formed. A control circuit 15 is configured together with electronic components. Then, this second printed circuit board 14
electrical circuit pattern and the first printed circuit board 3
It is electrically connected to the wiring pattern by an interconnector 16. Incidentally, reference numeral 17 denotes a bottom plate attached to the lower open portion of the switch case 1.

Now, the electrical configuration will be described according to FIG. One end (common electrode) of the switch elements 12 ₁ to 12 ₁₂ is connected to a power terminal 1 to which a DC voltage Vcc is applied.
The other ends (unit electrodes) of the switch elements 12 ₁ to 12 ₁₁ are connected to one input terminal of each of the OR circuits 19 ₁ to 19 11 , and the other ends (unit electrodes) of the switch elements 12 1 to 12 ₁₁ are connected to one input terminal of each of the OR circuits 19 ₁ to 19
The output terminal of ₁₁ is a D-type flip-flop circuit 20.
It is connected to each data input terminal D of ₁ to 20 ₁₁ . Each output terminal of the OR circuits 19 ₁₁ to 19 ₂ is connected to the other input terminal of the subsequent OR circuits 19 ₁₀ to 19 ₁ . Further, the other end (unit electrode) of the switch element 12 ₁₂ is connected to the data input terminal D of the D-type flip-flop circuit 20 ₁₂ and the other input terminal of the OR circuit 19 ₁₁ .
The output terminal of 9 ₁ is connected to one input terminal of AND circuit 19 ₀ . Further, in the AND circuit ₁₉₀ , the other input terminal is connected to the output terminal of a clock pulse generation circuit 21 consisting of an oscillation circuit, and the output terminal is connected to the flip-flop circuit _201.
~ ₂₀₁₂ are connected to each clock pulse input terminal C. Furthermore, the flip-flop circuits 20 ₁ -
Each set output terminal Q of 20 ₁₂ is connected to an amplifier 22 ₁ to 2.
2 ₁₂ to each anode of the light emitting diodes 4 ₁ to 4 ₁₂ , and the light emitting diodes 4 ₁ to 4 ₁₂
Each cathode of is grounded. In this case, the AND circuit 19 ₀ , the OR circuits 19 ₁ to 19 ₁₁ , the flip-flop circuits 20 ₁ to 20 ₁₂ , the clock pulse generation circuit 21, and the amplifiers 22 ₁ to 22 ₁₂ constitute the control circuit 15.

Next, the operation of this embodiment will be explained. Now, the switch elements 12 ₁ to 1 for the windows 11 ₁ to _{11 12}
When one of the switch elements ₂₁₂ , for example ₁₂₁₀ , is turned on by touching its window ₁₁₁₀ , the switch element ₁₂₁₀ generates a high-level on signal, and this on signal is For example, given the temperature control circuit of an automobile air conditioner, the temperature is set accordingly. in this case,
In the temperature control circuit, switch elements 12 ₁ to
The on-signal of 12 ₁₂ allows higher temperatures to be set in this order, so that the switch element 12 ₁ corresponds to the lowest set temperature and the switch element 12 ₁₂ corresponds to the highest set temperature. We will deal with it. On the other hand, _the high-level ON signal of the switch element ₁₂₁₀ is applied to the OR circuit ₁₉₁₀ , which generates a high-level output signal to the data input terminal D of the flip-flop circuit ₂₀₁₀ .
and the subsequent (lower) OR circuit 19 ₉
will begin to give. Therefore, the OR circuit 19 ₉ ~
The high-level output signals of the previous- _stage (high-level) OR circuits ₁₉₁₀ to ₁₉₂ are sequentially applied to 191 to generate high-level output signals, respectively, and the output signals are applied to the data input terminals D of flip-flop circuits ₂₀₉ to ₂₀₁ . At the same time, the high level output signal of the lowest OR circuit ₁₉₁ is given to the AND circuit ₁₉₀ , and when a clock pulse is subsequently given from the clock pulse generation circuit 21, the AND circuit ₁₉₀ receives the clock pulse. The signal is passed through and applied to the clock pulse input terminals C of the flip-flop circuits 20 ₁ to 20 ₁₂ . Therefore, the flip-flop circuits 20 ₁ to 20 ₁₀ remember that the signal applied to the data input terminal D at that time is at high level, and set the set output signal from each set output terminal Q to high level, and
The flip-flop circuits ₂₀₁₁ and ₂₀₁₂ remember that the signal applied to the data input terminal D at that time is not at a high level, that is, at a low level, and set the set output signal from each set output terminal Q to a low level. become. This results in
The amplifiers 22 ₁ to 22 ₁₀ are activated by the high level set output signals of the flip-flop circuits 20 ₁ to 20 _{10 .}
The light emitting diodes 4 ₁ to 4 10 are energized through the diodes 4 1 to 4 ₁₀ and emit light at the same time to perform a display operation, so that the window portions 11 ₁ to 11 ₁₀ emit light. That is, not only the portion of the window 11 ₁₀ corresponding to the touch-operated switch element, for example 12 ₁₀ , emits light, but also the lower window 11 ₉
~11 The part ₁ will also emit light.

As described above, according to this embodiment, the switch element 12 ₁ to 12 ₁₂ is formed on the upper part of the display part 6 by the unit electrodes of the substrate 8 and the common electrode of the sheet 10, and has a light-transmitting property. Since the switch parts 7 are arranged in close contact with each other, the structure of the switch part 7 is extremely simple compared to the conventional push button type, and the switch part 7 can be made smaller. Therefore, it is extremely easy to operate,
Furthermore, not only the light-emitting diode corresponding to the touch-operated switch element emits light, but also all of the lower-level light-emitting diodes emit light, compared to the conventional method in which only the lamp etc. inside the operated push button lights up. Visibility is extremely excellent.

In the above embodiment, the through hole 2 of the switch case 1
In _the second embodiment of the present invention shown in _FIG . In addition, an arc-shaped through hole 23 is formed in the switch case, and this through hole 23 is
12 windows 24 ₁ ~
24 ₁₂ are formed on an arc, and these window portions 24 ₁ to
It is also possible to arrange a light emitting diode and a switch element corresponding to 24 ₁₂ .

FIG. 5 shows a third embodiment of the present invention, in which the same parts as in the first embodiment are designated by the same reference numerals, and only the different parts will be explained below. 25
is a liquid crystal display section used in place of the display section 6, which is connected to the window sections 11 ₁ to 11 ₁₂ (see FIG. 2).
It is formed into 12 display sections corresponding to . 2
6 and 27 are the CPU and liquid crystal driver that constitute the control circuit, and the other ends (unit electrodes) of the switch elements 12 ₁ to 12 ₁₂ are the data input terminals DB ₀ of the CPU.
~ DB ₁₁ , and the 4-bit output terminals P ₁₀ to _{P 13} of this CPU 26 are input terminals I ₀ of the liquid crystal driver 27.
_-I3 , and output terminals _S0 - _S11 of this liquid crystal driver 27 are connected to input terminals _S0 - _S11 corresponding to each of the 12 display sections of the liquid crystal display section 25.
Then, the busy terminal BUSY of the liquid crystal driver 27
is connected to the control terminal P27 of the CPU 26.

When one of the switch elements 12 ₁ to 12 ₁₂ , for example 12 ₁₀ , is touched, a high-level on signal from the switch element 12 ₁₀ is applied to the data input terminal DB ₉ of the CPU 26 . The CPU 26 outputs the 4-bit output terminals P ₁₀ to _{P 13}
, a binary code signal with the number "10" corresponding to the switch element 12 ₁₀ is outputted and applied to the input terminals I ₀ to _{I 3} of the liquid crystal driver 27, and in response, the liquid crystal driver 27 outputs the binary code signal with the number "10" corresponding to the switch element 12 ₁₀ . A high level output signal is outputted from ~ _S9 and applied to the input terminals _S0 ~ _S9 of the liquid crystal display section 25. Therefore, the window section ₁₁₁₀ corresponding to the switch element ₁₂₁₀ of the liquid crystal display section 25
At the same time that the display section of this part lights up and performs a display operation, all of the display sections of the lower window sections 11 ₉ to 11 ₁ also light up and perform a display operation. Therefore, this third embodiment also provides the same effects as the first embodiment.

FIG. 6 shows a fourth embodiment of the present invention, in which the same parts as in the first embodiment are designated by the same reference numerals, and only the different parts will be described below. 28
29 is a transparent resistance electrode formed on the substrate 8 (see FIG. 1) instead of a unit electrode; 29 is the sheet 1;
0 (see FIG. 1), and together with the spacer 9 (see FIG. 1), these constitute a switch section 30 in place of the switch section 7. One end of this resistance electrode 28 is connected to the power supply terminal 18, and the other end is grounded via a resistor 31. Further, one end of the common electrode 29 is connected to the positive (+) input terminal of an operational amplifier 35 that forms a voltage follower 34 together with a resistor 32 and a capacitor 33, and an output resistor 36.
It is grounded through. The common connection point of the resistor 32 and capacitor 33, which are the output terminals of the voltage follower 34, is connected to a comparator 37 ₁
~37 Connected to _{the 12} positive (+) input terminal. 38 ₁ to 38 ₁₃ are reference resistors connected in series between the ground and the power supply terminal 18, and the common connection point of these two adjacent reference resistors is the negative (-) of the comparators 37 ₁ to 37 ₁₂ . are connected to the input terminals in sequence, and furthermore, comparators 37 ₁ to 37
The output terminal of 37 ₁₂ is a flip-flop circuit 20 ₁
~20 ₁₂ are connected to each data input terminal D. 39 is a comparator that constitutes the synchronization circuit 40 together with the clock pulse generation circuit 21 and the AND circuit ₁₉₀ , and its negative (-) input terminal is connected to the resistor 41, which is connected between the power supply terminal 18 and the ground.
42, its positive (+) input terminal is connected to the positive (+) input terminal of the operational amplifier 35, and its output terminal is connected to one input terminal of the AND circuit ₁₉₀ . And the AND circuit 19
₀ , the other input terminal is the pulse generator circuit 2
1, and the output terminal is connected to the clock pulse input terminal C of the flip-flop circuits 20 ₁ to 20 ₁₂ .
It is connected to the. In this case, the voltage follower 34, comparators ₃₇₁ to ₃₇₁₂ , synchronous circuit 40, flip-flop circuits ₂₀₁ to ₂₀₁₂ , and amplifiers ₂₂₁ to ₂₂₁₂ constitute a control circuit 43.

When a portion of the sheet 10 corresponding to one of the windows 11 ₁ to 11 ₁₂ (see FIG. 2) is touched, the common electrode 29 of that portion comes into contact with the resistance electrode 28. The switch element constituted by these is in the on state, and the output resistor 36
An output voltage of a magnitude corresponding to the resistance value of the resistive electrode 28 at the position where it contacts the common electrode 29 is generated between both terminals of the resistive electrode 28 . This output voltage is the voltage follower 3
4 to the positive (+) input terminals of the comparators 37 ₁ to 37 ₁₂ , the reference voltage applied to the negative (-) input terminals of the comparators 37 ₁ to 37 ₁₂ is lower than the output voltage. The smaller one outputs a high level output signal and applies it to the data input terminal D of the corresponding flip-flop circuit. Furthermore, the output voltage from the output resistor 36 is also given to the positive (+) input terminal of the comparator 39 of the synchronous circuit 40, so the comparator 39 generates a high-level output signal from its output terminal and sends it to the AND circuit ₁₉₀ . Therefore, when the clock pulse generation circuit 21 generates a clock pulse, this clock pulse is applied to each clock pulse input terminal C of the flip-flop circuits 20 ₁ to 20 ₁₂ via the AND circuit 19 ₀ . Flip-flop circuit 20 ₁ ~
In ₂₀₁₂ , the one to which a high level signal is applied to the data input terminal D sets the set output signal at the set output terminal Q to a high level and energizes the corresponding light emitting diode to cause it to emit light. As a result, even in this fourth embodiment, the first
The same effects as in the embodiment can be obtained.

The above embodiments describe the case in which the present invention is applied to a temperature setting switch device for an air conditioner for an automobile; however, the present invention is not limited to this, and is applicable to a speed setting switch device for an automatic constant speed running device for an automobile. It can be used as a switch device, a switch device for setting intermittent wiper time in wiper devices, a switch device for setting brightness in instrument panel display devices, and is widely applicable not only to automobiles but also as a switch device in general to devices with selection functions. can do.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can of course be implemented with appropriate modifications within the scope of the gist.

As explained above, the present invention provides a display section with a plurality of display sections arranged side by side from lower to upper order, and a switch equipped with translucent switch elements corresponding to the plurality of display sections. A control circuit for disposing a section close to the display section and operating a display section corresponding to the operated switch element and display sections located lower than this when a switch element of the switch section is operated. Since the switch structure is simple and compact, it is possible to provide a switch device with excellent visibility and operability.

[Brief explanation of the drawing]

Fig. 1 is an overall vertical sectional view showing the first embodiment of the present invention, Fig. 2 is a plan view of the through-hole portion of the switch case of the same embodiment, and Fig. 3 is an explanation of the electrical configuration of the same embodiment. FIG. 4 is a plan view of the through-hole portion of the switch case showing the second embodiment of the present invention, FIG. 5 is an explanatory diagram of the electrical configuration showing the third embodiment of the present invention, and FIG. The figure is an explanatory diagram of the electrical configuration of a fourth embodiment of the present invention. In the drawing, 1 is a switch case, 2 is a through hole, and 4 ₁
~4 ₁₂ is a light emitting diode (display section), 6 is a display section, 7 is a switch section, 8 is a substrate, 9 is a spacer,
10 is a sheet, 11 ₁ to 11 ₁₂ is a window part, 12 ₁ to 1
2 ₁₂ is a switch element, 15 is a control circuit, 23 is a through hole, 24 ₁ to 24 ₁₂ are window parts, 25 is a liquid crystal display part,
26 and 27 are a CPU and a liquid crystal driver (control circuit), 28 is a terminal electrode, 29 is a common electrode, 30 is a switch section, and 43 is a control circuit.

Claims (1)

[Scope of utility model registration request] A switch comprising: a display unit having a plurality of display sections arranged side by side from lower to upper; and a switch element disposed close to the display section and having translucency corresponding to the plurality of display sections. and a control circuit for displaying a display section corresponding to the operated switch element and display sections located lower than this when a switch element of the switch section is operated.