JP2010257583A - Switch device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate an intuitive operation of a switch device by overcoming the problem in which, if a defective switch function is assigned to another switch, its operation becomes complicated because the defective switch function is added to an intrinsic function, and is assigned to the other switch at a different position which is not related to the defective switch, resulting in difficulty in the intuitive operation. <P>SOLUTION: A plurality of operation units A-F are arrayed wherein one of a plurality of different functions is assigned and selected for luminous display. The switch device includes a control unit (150) equipped with a defective operation unit detection means which detects a defective operation disabling the selection of an assigned function even if it is operated, and an operation unit operation mode changing means which changes an operation mode when the defective operation unit is detected by the detective operation unit detection means, from a first operation mode which displays an assigned function in luminous manner to a second operation mode which can select the function assigned to the defective operation mode by sequentially switching to the function of an adjoining operation unit every time an operation unit other than the defective operation unit is operated, so that the operation unit to which the switched function is assigned sequentially appears in luminous manner. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a switch device that selects a function of a failed switch by operating another switch when the switch fails.

  As described in Patent Document 1, when a switch fails, the switch device assigns the function of the failed switch to another switch at another position, and operates the function of the failed switch with the other switch. Are selected.

JP2004-207060

  However, when the function of the failed switch is assigned to another switch in another position, the function of the failed switch is assigned to another switch in another position that is not related to the failed switch. It was difficult to operate intuitively.

  In order to solve the above-described problem, the switch device of the present invention is arranged with a plurality of switches that are assigned one function among a plurality of different functions and that are selected to emit light when operated. Yes. Among these switches, a failure switch detection means for detecting at least one failure switch that cannot be assigned an assigned function even if operated, and a switch selection when the failure switch is detected by the failure switch detection means Each time the switch other than the failure switch is operated, the mode is selected and switched from the normal selection mode in which the function assigned by the operation is selected and the luminescence display is selected. Switch selection mode changing means for changing to a failure selection mode in which the function assigned to the failure switch can be selected by sequentially displaying the switches assigned with the function to emit light is provided.

  According to the present invention, since the switch device is provided and the function of the failure switch can be selected by operating another switch near the failure switch, it can be operated intuitively.

FIG. 2 is a rear view of the vehicle showing the switch device according to the first embodiment. Sectional drawing of II of FIG. 1 in the switch apparatus in 1st Embodiment. FIG. 2 is a control block diagram illustrating a configuration of a switch device according to the first embodiment. FIG. 3 is a detailed view showing an operation unit of the switch device according to the first embodiment. FIG. 3 is an image diagram showing an illumination part lighting / extinguishing pattern of the switch device according to the first embodiment. 6 is a flowchart showing processing of the switch device according to the first embodiment. FIG. 7 is a flowchart showing a subroutine of step S20 (operation unit failure determination and operation mode switching) in FIG. 6; 7 is a flowchart showing a subroutine of step S30 (function output) in FIG. FIG. 7 is a flowchart showing a subroutine of step S40 (detection of recovery of failure operation unit) in FIG. FIG. 7 is a flowchart showing a subroutine of step S50 (illumination part on / off pattern) in FIG. 6; 7 is a flowchart showing a subroutine of step S60 (forced flag change) in FIG. The vehicle rear view which shows the switch apparatus in 2nd Embodiment. The control block diagram which shows the structure of the switch apparatus in 2nd Embodiment. The flowchart which shows the process of the switch apparatus in 2nd Embodiment. 15 is a flowchart showing a subroutine of step S730 (function output) in FIG.

(Example 1)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
A configuration of the switch device 100 according to the first embodiment will be described.

  As shown in FIGS. 1 to 5, the switch device 100 according to the first embodiment includes an operation unit A101a and an operation unit B101b, an operation unit C101c, an operation unit D101d, an operation unit E101e, an operation unit F101f, and a failure switch detection as switches. Control unit 150 and base unit 110 as means and switch selection mode changing means, output device A160a, output device B160b, output device C160c, output device D160d, output device E160e and output based on a signal from control unit 150 It is comprised with the apparatus F160f.

  The operation unit A101a, the operation unit B101b, the operation unit C101c, the operation unit D101d, the operation unit E101e, and the operation unit F101f are provided side by side on an instrument panel 120 that is assembled to the front of the vehicle body (not shown). The operation unit A101a includes a pressing unit A102a that is pressed by a human hand, a pressing unit contact A103a that contacts the base 110, a self-luminous illumination unit A104a, and a spring unit A105a that returns the pressing unit A102a to its original position. Similarly, for the operation part B101b, the push part B102b, the push part contact B103b, the illumination part B104b, and the spring part B105b, and for the operation part C101c, the push part C102c, the push part contact C103c, and the illumination part C104c And the spring part C105c, the operation part D101d, the pushing part D102d, the pushing part contact D103d, the illumination part D104d and the spring part D105d, and the operation part E101e, the pushing part E102e, the pushing part contact E103e, the illumination part E104e and the spring. The part E105e and the operation part F101f are configured by a pushing part F102f, a pushing part contact F103f, an illumination part F104f, and a spring part F105f.

  In addition, the operation unit A101a, the operation unit B101b, the operation unit C101c, the operation unit D101d, the operation unit E101e, and the operation unit F101f are each assigned one of a plurality of different functions and select this one function. can do. That is, the operation unit A 101a has function A, the operation unit B 101b has function B, the operation unit C 101c has function C, the operation unit D 101d has function D, the operation unit E 101e has function E, and the operation unit F 101f has function F. Each is assigned and can be selected.

  Since the configuration of the operation unit A101a, the operation unit B101b, the operation unit C101c, the operation unit D101d, the operation unit E101e, and the operation unit F101f is the same, the configuration of the operation unit A101A will be described as a representative, the operation unit B101b and the operation unit Regarding the description of the C101c, the operation unit D101d, the operation unit E101e, and the operation unit F101f, only the parts different from the operation unit A101a will be described.

  The pushing portion A102a of the operation portion A101a is provided with an outer peripheral projection 108a that protrudes outward from the passenger compartment at the periphery, and has a substantially U-shaped cross section. In addition, a pusher portion hole A106a is formed in the pusher portion A102a, and the pusher portion hole A106a is covered with a transparent acrylic plate so that light can be transmitted to the vehicle interior side. Further, the pusher A102a is provided with a notation A107a representing the function A so that it can be recognized that the function A is selected by pushing the pusher A102a. The notation A107a is represented as A as shown in FIG. Similarly, the notation B107b of the pushing part B102b is B, the notation C107c of the pushing part C102c is C, the notation D107d of the pushing part D102d is D, the notation E107e of the pushing part E102e is E, and the notation F107f of the pushing part F102f. Is represented as F.

  The pushing portion contact A103a is provided at the tip of the outer peripheral projection 108a of the pushing portion A102a, and comes into contact with the base portion 110 when the pushing portion A102a is pushed.

  The base 110 detects that the pushing portion A102a is pushed by the contact of the pushing portion contact A103a.

  The illumination part A104a is provided at a position corresponding to the pushing part hole A106a of the base part 110 on the back surface side of the pushing part A102a, and the pushing part A102a is pushed and the pushing part contact A103a becomes the base part 110. Emits light when touched. The emitted light is transmitted from the acrylic plate covering the pushing portion hole A106a to the vehicle interior side.

  The spring portion A105a is provided on the back surface side of the pushing portion A102a, between the outer peripheral projection portion 108a and the illumination portion A104a, in contact with both the back surface of the pushing portion A102a and the base portion 110. When the pushing portion A102a is stopped by the spring portion A105a, the pushing portion A102a returns to the initial position by the reaction force of the spring portion A105a.

  The control unit 150 includes an operation unit A101a and an output device A160a corresponding thereto, an operation unit B101b and an output device B160b corresponding thereto, an operation unit C101c and an output device C160c corresponding thereto, an operation unit D101d and an output device corresponding thereto The D160d, the operation unit E101e and the corresponding output device E160e, the operation unit F101f, and the corresponding output device F160f are connected. Specifically, based on the input signal of the operation unit A101a, the output device A160a outputs the function A assigned to the operation unit A101a. Similarly, the output device B160b outputs the function B assigned to the operation unit B101b, the output device C160c outputs the function C assigned to the operation unit C101c, and outputs the function D assigned to the operation unit D101d to the output device D160d. Is output, the function E assigned to the operation unit E101e is output from the output device E160e, and the function F assigned to the operation unit F101f is output from the output device F160f. For example, the output device A160a is a television, the output device B160b is a radio, the output device C160c is navigation, the output device D160d is an air conditioner, the output device E160e is a power window, the output device F160f outputs a head-up display, and the functions A to F are Start each output device. These output devices and functions are not limited to this.

  Next, the flowchart shown in FIG. 6 will be described. This flowchart is the overall flow of the first embodiment, and this flow is started when an ignition switch (not shown) is turned on or off, and the ignition switch is turned on.

  Step S20 is performed by the base 110 and the control unit 150 by any one of the pushing part contact A103a, the pushing part contact B103b, the pushing part contact C103c, the pushing part contact D103d, the pushing part contact E103e, and the pushing part contact F103f. Is detected from OFF to ON, that is, the contact with the base 110 is detected, and the process proceeds to step S30. In step S20, the operation unit failure is determined and the operation mode flag is switched. Details of step S20 will be described later with reference to FIG.

  In step S30, function output is performed in a mode corresponding to the flag selected in S20, and the process proceeds to step S40. Details of step S30 will be described later with reference to FIG.

Step S40 is performed by the base 110 and the control unit 150 by any one of the pushing portion contact A103a, the pushing portion contact B103b, the pushing portion contact C103c, the pushing portion contact D103d, the pushing portion contact E103e, and the pushing portion contact F103f. When is a failure operation unit as a failure switch, it is detected whether or not the function as the failure operation unit has been restored. Function recovery means that a function assigned to the operation unit can be selected when operated. Details of step S40 will be described later with reference to FIG. 9.Step S50 is performed by operating base unit 110 and control unit 150 with operation unit A101a, operation unit B101b, operation unit C101c, operation unit D101d, and operation unit E101e. When the flag B is for operating the part F101f, the lighting unit A104a, the lighting unit B104b, the lighting unit C104c, the lighting unit D104d, the lighting unit E104e, and the lighting unit F104f are used to control light emission as a failure selection mode sign, step S60 Proceed to Details of step S50 will be described later with reference to FIG.

  In step S60, the base unit 110 and the control unit 150 change the flag B to the flag A, and the process proceeds to step S70. Details of step S60 will be described later with reference to FIG.

  In step S70, it is determined by the control unit 150 whether or not the ignition switch is turned off. When the ignition switch is turned off, this flow is completed. When the ignition switch is not off, the process returns to step S20.

  Details of step S20 will be described with reference to FIG. In step S200, the pusher contact A103a, the pusher contact B103b, the pusher contact C103c, the pusher contact D103d, the pusher contact E103e, and the pusher contact F103f are all ON or OFF. To detect.

  In step S210, any one of the pushing portion contact A103a, the pushing portion contact B103b, the pushing portion contact C103c, the pushing portion contact D103d, the pushing portion contact E103e, and the pushing portion contact F103f is turned from OFF to ON. It is determined whether or not the pushing portion contacts and touches the base portion 110 by operating the pushing portion. When the contact is made, the process proceeds to step S220, and when the contact is not made, the process ends.

  In step S220, the pushing portion contact ON time, that is, the time during which any pushing portion contact is in contact with the base 110 is detected, and the process proceeds to step S230.

  In step S230, it is determined whether or not the pushing portion contact ON time is larger than a predetermined value A. If it is larger, the process proceeds to step S240, and if not larger, the process proceeds to step S260. In step 230, it is confirmed whether or not the pressing portion contact is fixed. The predetermined value A in this embodiment is set to 10 seconds, but is not limited to this and can be set as appropriate.

  In step S240, when the pressing portion contact ON time is larger than the predetermined value A, the operating portion constituting the pressing portion contact is detected as a faulty operating portion that is fixed, and the process proceeds to step 250. The malfunction operation unit is an operation unit that cannot select a function assigned to the operation unit constituting the push unit even if the push unit is operated.

In step S250, the flag A is changed to the flag B, and the process ends.
In step S260, any one of the pushing portion contact A103a, the pushing portion contact B103b, the pushing portion contact C103c, the pushing portion contact D103d, the pushing portion contact E103e, and the pushing portion contact F103f is arbitrarily set within a predetermined time. It is determined whether or not it has been turned ON from OFF for a predetermined number of times. When it is turned from OFF to ON, the process proceeds to step S270, and when it is not turned from OFF to ON, the process is finished. In this embodiment, the predetermined time is 5 seconds and the predetermined number of times is four, but the present invention is not limited to this and can be set as appropriate. In this step S260, it is assumed that even if any of the pushing parts is pushed, the function is not output and a situation where the pushing part is continuously pushed is detected.

In step S270, after the ignition switch is turned on, the operation unit that has not been pushed is turned on as a failure operation unit that does not turn on, and the process proceeds to step 280.
In step S280, the flag A is changed to the flag B, and the process ends.

  Note that step S210, step S220, step S230, step S240, step S260, and step 270 serve as a failure switch detection unit that detects a failure operation unit that cannot select an assigned function even if operated.

  Details of step S30 will be described with reference to FIG. In step S310, any one of the pushing portion contact A103a, the pushing portion contact B103b, the pushing portion contact C103c, the pushing portion contact D103d, the pushing portion contact E103e, and the pushing portion contact F103f is turned on from OFF. It is determined whether or not the pushing portion contact is in contact with the base portion 110 by operating the pushing portion, and the process proceeds to step S320 when making contact, and if not, this processing is performed. Finish.

  In step S320, it is determined whether or not the operation mode is flag A. If the operation mode is flag A, the process proceeds to step S330. When it is not flag A, that is, when it is flag B, the routine proceeds to step 350.

  In step S330, when the operation mode is the first operation mode, the function assigned to the operation unit constituting the pressing unit contact that contacts the base unit 110 is selected and output from the output device as the function normal output. For example, when the pushing portion contact that contacts the base portion 110 is the pushing portion contact A103a, the function A assigned to the operation portion A101a constituting the pushing portion contact A103a is selected, and this function A is output to the output device. Output from A160a.

  When the flag A is set in step S340, the illumination unit of the operation unit that constitutes the pressing unit contact that contacts the base unit 110 is turned on. For example, when the pushing portion contact in contact with the base 110 is the pushing portion contact A103a, the illumination portion A104a of the operation portion A101a that constitutes the pushing contact A103a is turned on, and this processing is completed.

  In step S350, when the flag is not A, that is, when the flag is B, as a function sequential switching output, the pushing portion of one operation portion other than the failure operation portion is pushed, and the pushing portion contact is connected to the base portion 110. Each time the contact is made, the control unit 150 selects the function assigned to the pusher adjacent to the pusher in turn, and outputs the function by the output device. For example, when the failure operation unit is the operation unit B101b, and the pushing unit A102a of the operation unit A101a other than the operation unit B101b is pushed and the pushing unit contact A103a comes into contact with the base unit 110, the pushing unit A102a The function B assigned to the operation unit B101b constituting the adjacent pressing unit B102b is selected, and the function B is output by the output device B160b. In addition, when the pushing portion A102a is pushed once again and the pushing portion contact A103a contacts the base portion 110, the function C assigned to the pushing portion C102c adjacent to the pushing portion B102b is selected. The function C is output by the output device C160c. In this way, the functions can be switched and selected sequentially.

  In step S360, the illumination unit of the operation unit to which the function selected in step S350 is assigned is turned on and off, and the process ends.

  Steps S330 and S340 are normal selection modes, and steps 350 and 360 are failure selection modes.

  Details of step S40 will be described with reference to FIG. Step S400 determines whether or not the failure operation unit is a fixed failure operation unit, that is, whether or not the failure operation unit is a fixed failure operation unit or a failure operation unit that is not turned on.

  In step S410, whether or not the pressing unit contact of the fault operation unit determined to be fixed in step S240 in FIG. 7 is OFF from ON, that is, whether or not the fixing state in which the pressing unit contact continues to contact the base 110 is recovered. If it is recovered, the process proceeds to step S420. If it is not recovered, the process is terminated. For example, if the malfunctioning operation unit determined to be fixed is the operation unit B101b, it is determined in this step 410 whether or not the pressing unit contact B103b has recovered from the state of being fixed to the base unit 110 from ON to OFF. ing.

  In step S420, the flag B is changed to the flag A, and this process ends.

  Step S430 determines whether or not the pushing contact of the fault operation unit determined not to be turned ON in step S270 in FIG. 7 is turned ON from OFF, that is, the fault operation unit determined not to be ON is turned ON. It is determined whether or not the function has been restored. If the function is restored from OFF to ON, the process proceeds to step 440. If the function is not turned ON from OFF, the process is terminated.

  In step S440, the flag B is changed to the flag A, and this process ends.

  Details of step S50 will be described with reference to FIG. In step S450, it is determined whether or not the flag is A. If the flag is A, the process is terminated. When the flag is not A, that is, when the flag is B, the process proceeds to step S460.

  As shown in FIG. 5, in step S460, the illumination unit A104a, the illumination unit B104b, the illumination unit C104c, the illumination unit D104d, the illumination unit E104e, and the illumination unit F104f are set in the failure selection mode so that the function sequential switching output can be recognized. The illumination part is turned on and off as a sign and displayed. As shown in FIG. 5, the illumination part lighting / extinguishing pattern includes lighting part A104a, lighting part B104b, and lighting part C104c in the order of lighting on / off 1 → on / off 2 → on / off 3 → on / off 4 → on / off 5 → on / off 6. The lighting unit D104d, the lighting unit E104e, and the lighting unit F104f are turned on and off, and after the lighting 6 is turned on and off 1, this series of lighting is repeatedly performed. In other words, the lighting unit A104a is turned on in the on / off state 1, the lighting unit A104a is turned off and the lighting unit B104b is turned on in the lighting state 2, and the lighting unit B104b is turned off and the lighting unit C104c is turned on in the lighting state 3. When the light is turned off 4, the lighting unit C104c is turned off and the lighting unit D104d is turned on.When the light is turned off 5, the lighting unit D104d is turned off and the lighting unit E104e is turned on.When the light is turned off 6, the lighting unit E104e is turned off and the lighting unit F104f is turned on. Light up. In this embodiment, the illumination part lighting / extinguishing pattern is set to finish in 60 seconds. This time is not limited to this, and can be set as appropriate.

  Details of step S60 will be described with reference to FIG. In step S510, any one of the pushing portion contact A103a, the pushing portion contact B103b, the pushing portion contact C103c, the pushing portion contact D103d, the pushing portion contact E103e, and the pushing portion contact F103f is turned from OFF to ON. It is determined whether or not the pressing portion contact is in contact with the base portion 110 by operating the pressing portion. When the contact is made, the process proceeds to step S520, and when it is not in contact, the processing is terminated.

  In step S520, it is determined whether or not the plurality of pusher contacts of the operation unit other than the malfunctioning operation unit have been turned from OFF to ON at the same time. When it has changed from OFF to ON, the process proceeds to step S530, and from OFF to ON. If not, the process ends. Also, “OFF to ON at the same time” determines whether or not the pushing portion contact ON time in which a plurality of pushing portion contacts are simultaneously turned on wraps for 5 seconds or more. In this embodiment, it is set to 5 seconds, but this can be set as appropriate.

  In step S530, it is determined whether or not the flag is B. If the flag is B, the process proceeds to step S540. When the flag is not B, that is, when the flag is A, this processing is finished.

  In step S540, the operation mode is forcibly changed from flag B to flag A, and this process ends.

  Note that step S250 and step S280 in FIG. 7, step S320 in FIG. 8, and step 420 and step 440 in FIG. 9 are switch selection mode changing means. Further, step 530 and step 540 in FIG. 11 are switch selection mode forcibly changing means for forcibly changing the switch selection mode.

(Example 2)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.
The configuration of the switch device 600 in the second embodiment will be described.

  In the switch device 600, the description of the same parts as those of the first embodiment is omitted, and only the parts different from the first embodiment are described.

  As shown in FIG. 12, the switch device 600 is a switch group arranged in a circle by an operation unit A601a, an operation unit B601b, an operation unit C601c, an operation unit D601d, an operation unit E601e, and an operation unit F601f as switches. An operation unit group 609, a control unit 650 as a failure switch detection unit and a switch selection mode change unit, and an output device 660 are configured.

  For the operation unit A601a, operation unit B601b, operation unit C601c, operation unit D601d, operation unit E601e, and operation unit F601f, one of a plurality of different functions related to the output device 660 as a common device is assigned. It has been. For example, the output device 660 is a speaker, and one of a plurality of different functions FM1, FM2, AM, CD, MD, and HDD related to the speaker is operated with the operation unit A601a, the operation unit B601b, and the operation unit C601c, respectively. Assigned to the part D601d, the operation part E601e, and the operation part F601f. That is, the operation unit A601a has an output unit A660a FM1, the operation unit B602b has an output unit B660b FM2, the operation unit C602c has an output unit C660c AM, the operation unit D602d has an output unit D660d, a CD, An MD as the output unit E660e is assigned to the operation unit E602e, and an HDD as the output unit F660f is assigned to the operation unit F602f, and these are output from the output device 660. The plurality of functions are functions that are selected exclusively because a common output device is used.

  Next, a flowchart will be described with reference to FIG. FIG. 14 is an overall flow corresponding to FIG. 6 of the first embodiment, and only step 730 is different from FIG.

  In step S730, function output is performed in a mode corresponding to the flag selected in S20, and the process proceeds to step S740. Details of step S730 will be described later with reference to FIG.

  Details of step S730 will be described with reference to FIG. Note that Step S850 and Step S860 are different from FIG. 8 of the first embodiment, and only that portion will be described.

  In step S850, when the flag is not A, that is, when the flag is B, as the function sequential switching output, the pushing part of one operating part other than the malfunctioning operating part is pushed, and the pushing part contact is changed from OFF to ON. Each time, the control unit 150 selects the function assigned to the pusher unit in the order arbitrarily determined in the operation unit group 609, and the function is output by the output device 660. For example, the operation unit A601a may be switched to the operation unit F601f so as to face the operation unit B601b, the operation unit E601e, the operation unit C601c, and the operation unit D601d diagonally.

In step S860, the illumination unit of the operation unit to which the function selected in step S850 is assigned is turned on and off, and this process is completed. Next, the effect of the present invention will be described. A plurality of switches are arranged side by side, and a failure switch detection means for detecting a failure switch that cannot select an assigned function even if operated, and a switch selection mode changing means for changing the switch selection mode from the normal selection mode to the failure selection mode are provided. Therefore, the function of the failure switch can be operated intuitively by operating other switches near the failure switch.

  Since the failure selection mode sign for turning on / off the illumination portion of the switch is displayed by the illumination portion on / off pattern in the failure selection mode, it is easy to recognize that the failure selection mode has been changed.

  In case of failure selection mode, multiple switches other than the failure switch can be pushed at the same time to forcibly change from failure selection mode to normal selection mode. When it is desired to use in the normal selection mode, it can be forcibly changed to the normal selection mode.

  A switch group including a plurality of switches to which one function among a plurality of different functions related to a common device is assigned and operated to select one of the functions and display the light; and a failure switch detection unit; Since the switch selection mode changing means for changing the operation mode from the normal selection mode to the failure selection mode is provided, in the case of the second operation mode, it is possible to switch among the functions related to the common device, and to change the switch position. It is easy to recognize and there is no output of irrelevant functions by switching functions, and switching of functions can be arbitrarily set within the switch group.

Switch device 100
Operation part A 101a
Operation part B 101b
Operation part C 101c
Operation part D 101d
Operation part E 101e
Operation unit F 101f
Base 110
Control unit 150
Instrument panel 120

Claims (4)

A plurality of switches that are assigned with one of a plurality of different functions and are operated to select one of the functions to emit and display are arranged side by side.
Among the switches, a failure switch detection means for detecting a failure switch that cannot be selected even if it is operated;
When the failure switch is detected by the failure switch detection means,
The switch selection mode is selected by switching from the normal selection mode in which the function assigned by the operation is selected and displaying the light emission, by sequentially switching to the function of the adjacent switch each time a switch other than the failure switch is operated. And a switch selection mode changing means for changing to a failure selection mode in which the function assigned to the failed switch can be selected by sequentially emitting and displaying the switch to which the switched function is assigned. Switch device. The switch device according to claim 1, wherein the switch is turned on and off, and a failure selection mode sign is displayed in the failure selection mode. 3. The switch device according to claim 1, wherein in the failure selection mode, the failure selection mode is changed to the normal selection mode by simultaneously operating the plurality of switches other than the failure switch. 4. . A switch group including a plurality of switches to which one function among a plurality of different functions related to a common device is assigned and operated to select one of the functions to emit light;
A fault switch detecting means for detecting at least one fault switch that cannot be selected even if it is operated among the switches;
When the failure switch is detected by the failure switch detection means,
Each time the switch other than the failure switch is operated from the normal selection mode in which the function selected by the operation is selected and the function is selected to be lit and displayed, the switch selection mode is selected. The switch is selected by switching to one of the different functions sequentially, and the switch assigned with the switched function sequentially emits light to change to the failure selection mode in which the function assigned to the failure switch can be selected. A switch device comprising switch selection mode changing means.