JPS6280136A - Display device for vehicle - Google Patents

Abstract

PURPOSE:To improve operability, by a method wherein, an object to be controlled, e.g., seat, in which, according to the form and preference of a passenger, set orientation is variable, is exteriorized for display, and by touching a sign part showing control details, orientation is controlled. CONSTITUTION:When seat orientation is controlled, for example, when a seat is moved upward, a clear electrode 22 formed on a glass sheet 21 in a liquid crystal panel 1 is touched with a finger of a passenger. In which case,a capacitor C1 starts discharge through a resistor R2, and the input level of an inverter circuit G1 is lowered. When an output is inverted from 0 to 1, the one input part of a NAND circuit G12 of an output circuit 32 attains 1, a signal synchronized with an output signal from a dividing circuit 34 is outputted from a NAND circuit G12, and a sign 12 showing upward movement is flickered. A recoil 421 is excited by means of an output from a circuit G1, a contact 451 is closed to drive a motor 431, and a seat is moved upward.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the improvement of a power device mounted on a vehicle, such as a display device that embodies the control object of a seat and displays control information, etc., and particularly relates to the use of transparent switches. The present invention relates to a vehicle display device that is easy to operate.

Conventional technology Conventionally, as a control device mounted on a vehicle, for example,
A seat control device as shown in Japanese Patent No. 8-53524 has been proposed.

This seat control device attempts to control the seating posture to an appropriate state by controlling the internal pressure of the airbag installed inside the seat and controlling the rotation of a motor to adjust the reclining angle. Control was performed by the crew operating a switch button.

The switch buttons include, for example, a number of switches corresponding to each posture control section of the seat arranged in parallel so that the occupant can operate them.

Problems to be Solved by the Present Invention Listed below are the problems caused by the conventional techniques.

a. The object to be controlled is unclear, that is, it is difficult to understand what the switch controls. In particular, it is unclear to anyone other than the owner of the vehicle.

b. Control details such as control direction are unclear.

C. When operating the switch, it is unclear which part is being controlled.

d. Poor operability. In other words, it is a mechanical switch and requires sufficient operating force.

e. Low reliability. That is, since there are many mechanical parts, it is easy to break down, and dust and foreign objects are likely to get into the gaps between the switch buttons and the like.

f. Manufacturing costs cannot be reduced. That is, since there are many mechanical parts, it is difficult to reduce the number of assembly steps, and integrated circuits and computerization are not possible.

Means for Solving the Problems The present invention solves the above-mentioned problems by displaying symbols indicating control contents on a power device mounted on a vehicle, such as a representation of a controlled object on a seat. and a display means for identifying and displaying a symbol corresponding to the control section when the control section is operated, and an operation section for operating the control section at a position corresponding to the position of the symbol, and mounted on the display surface of the display means. The object of the present invention is to provide a display device for a vehicle configured with a see-through type switch means.

Operation The vehicle display device having the above configuration is easy to operate by using a display means that concretely displays the controlled object and a see-through type switch means. , a symbol indicating the control content corresponding to the position of the operating section is displayed for identification so that it can be distinguished from other symbols, and the control section is confirmed. Then, the load corresponding to the symbol indicating the control content is also driven, and the controlled object is controlled in a predetermined manner.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Note that this embodiment relates to a seat control device.

In FIG. 1 and FIG. 2, 1 is a liquid crystal panel as a display means, 2 is a transparent switch panel as a transparent switch means, and 3 is a liquid crystal panel 1 and a drive circuit 4 by input from the transparent switch panel 2. 4 is a drive circuit that drives the controlled object, 5 is a constant voltage power supply, 6 is an ignition switch, and 7 is an on-vehicle battery.

Each of the above-mentioned configurations will be described in more detail below. First, the liquid crystal panel 1 will be described in detail. Reference numeral 11 represents a first display section that represents a seat to be controlled by a diagram, etc., and reference numerals 12 to 19 indicate control contents. This is the second display section that displays a symbol indicating the control direction. In addition, 12.13 displays an arrow indicating vertical movement of the seat, 14.15 similarly indicates longitudinal movement, 16.17 indicates the direction of pressurization of the lumbar support, and 18. Reference numeral 19 indicates arrows indicating the direction in which the reclining part is tilted.

Next, the transparent switch panel 2 will be described in detail.

By the way, various types of see-through switch panels 2 have been developed in recent years, such as those made of IJ racks with transparent conductive films placed at predetermined intervals, touch-type switches using conductive glass, and optical switch panels. There are methods that use a scanning method, methods that detect the propagation time of surface waves, and methods that use a strain gauge to detect the force with which the screen is pressed.

If there is a concern that malfunction may occur due to dirt or scratches on the operating section, a type that can protect the operating surface with a protective film or the like, such as a strain gauge type, may be used as appropriate.

However, in this embodiment, a touch-type switch panel using low-cost conductive glass will be described. In FIG. ,
A transparent electrode 20 serving as a ground portion is also formed. or,
2' is a connection terminal for connecting each transparent electrode to the control circuit 3.

As shown in FIG.
When the transparent switch panel 2 is superimposed on the liquid crystal panel 1, the transparent electrode 22 is located above the symbol 12, and similarly to the other symbols, a transparent electrode is located above each symbol.

Next (B control circuit 3 will be explained in detail.

The control circuit 3 includes an input circuit 31 that processes signals input from the transparent switch panel 2, and a liquid crystal panel 1.
and an output circuit 32 that drives the.

The input circuit 31 is a circuit that combines a waveform shaping circuit and a delay circuit, and includes an inverter circuit G1 to Gns, a diode DI to Dns, and a capacitor C1.
to Cn s and resistors R1 to Rn.

The circuit configuration that combines the waveform shaping circuit and the delay circuit will be explained using a circuit related to the inverter circuit G1 as a representative.

The inverter circuit G1 has an input/output phase inversion function and an amplification function, and even if the input potential changes slowly, the output potential is waveform-shaped into a rectangular wave. A capacitor C1 is connected to the input part of the inverter circuit G1, and the output of the inverter circuit G1 is controlled by the charge/discharge level of the capacitor C1. The capacitor Ct has a resistor R
1 are connected in series via a diode D1 to constitute a charging circuit, a resistor R2 is connected in parallel to constitute a discharging circuit, and together with the inverter circuit G1 constitute a delay circuit.

Further, the output circuit 32 includes an oscillation circuit 33 and a frequency dividing circuit 34.
, exclusive OR circuits G3 to GIO, inverter circuit Gll, and NAND circuits G12 to G19.

Next, the drive circuit 4 will be explained in detail.

The drive circuit 4 changes the state of the seat to be controlled, and includes amplifier circuits 411 to 41n1 relay coils 421 to 42n1 relay contacts 431 to 43.
n, and motors 441 to 44n. The terminals of the motors 441 to 44n are connected to movable relay contacts 431 to 43n, the normally closed contacts of the relay contacts 431 to 43n are grounded, and the normally open contacts are connected to the vehicle battery via the ignition switch 6. There is.

Incidentally, even if the connection relationship between the normally closed contact and the normally open contact is reversed, the effect is the same.

Further, in FIG. 1, among the input circuit 31 and the drive circuit 4, the circuits related to symbols 14 to 18 on the second display section are not shown, but the configuration is the same as the others.

Next, the operation of a preferred embodiment of the present invention having the above configuration will be described in detail.

Now, suppose that the passenger uses the transparent electrode 2 to move the seat upward.
If it touches 2, then capacitor C1 is connected to resistor R
2, and the input level of the inverter circuit G1 drops.

When the input level exceeds its own operating value, the inverter circuit G1 inverts its output from "0" to "1" level and outputs it.

As a result, one input part of the NAND circuit G12 of the output circuit 32 becomes 1'', a signal synchronized with the output signal of the frequency dividing circuit 34 is output from the NAND circuit G12, and the movement of the liquid crystal panel 1 in the upward direction of the seat is controlled. The symbol 12 shown blinks.Other symbols indicate other NAND circuits G13 to G19.
All outputs are at 1” level and are displayed without blinking.

The output of the inverter circuit G1 is further transmitted to an amplifier circuit 411.
is input to energize the relay coil 421, and the relay contact 4
31 to the normally open contact side, energize the motor 441,
Move the seat upwards.

By the way, there is a delay from when the transparent electrode 22 is operated to when the output of the inverter circuit G1 is reversed due to the discharging action of the capacitor CI. Prevents malfunction.

Now, when the occupant releases his/her hand from the transparent electrode 22, the capacitor C1 starts charging via the resistor R1.

The inverter circuit Gl reverses the output power to 0" with a delay, contrary to the discharging mode of the capacitor C1. That is, even after releasing the hand from the transparent electrode 22,
2 continues blinking for a predetermined period of time. This makes it possible to make the controlled part of the seat more clear.

Effects of the Present Invention The present invention has the following effects due to the above-mentioned structural action.

a) Since the controlled object is concretely displayed using a diagram or the like, the controlled object becomes clear.

b) Control details For example, symbols such as arrows indicating the direction of control are displayed, and the part being controlled is displayed with an identification/distinguishing surface such as a flashing display, so that the control content and the control part become clear.

C) Easy to operate with see-through touch switch.

d) Since there are few mechanical parts and many electronic parts, integrated circuits and computerization are possible, and low cost and high reliability can be expected.

e) The device of the present invention can be used in various power devices such as vehicles.

[Brief explanation of drawings]

FIG. 1 is an electrical circuit diagram of a preferred embodiment of the present invention. FIG. 2 is a perspective view of the liquid crystal panel and transparent switch panel shown in FIG. 1. 1...Liquid crystal panel as display means, 4...
... Drive circuit, 2 ... Transparent switch panel as transparent switch means, 31 ... Input circuit, 3 ... Control circuit, 32 ...
・Output circuit. Above Figure 1 Figure 2

Claims (1)

[Claims] A display means for displaying a symbol indicating control content on a concrete display of a control target of a power device mounted on a vehicle, and for identifying and displaying a symbol corresponding to the control unit by operating the control unit; and a control unit. A display device for a vehicle, comprising: a see-through type switch means having an operation part for operation at a position corresponding to the symbol position and mounted on a display surface of the display means.