JP5883224B2 - Electric assist bicycle display device and electric assist bicycle - Google Patents

Description

  The present invention relates to a display device for an electrically assisted bicycle and an electrically assisted bicycle.

  The electric assist bicycle is a bicycle that includes a battery and an electric motor and uses the driving force of the electric motor as auxiliary power. The electric motor is driven by electricity stored in the battery. When the remaining battery level is low, the electric motor cannot be driven effectively, and suitable auxiliary power cannot be obtained. When the battery level is low, charging or battery replacement is required. Therefore, the battery remaining amount is important information for the passenger. Conventionally, in a power-assisted bicycle, it has been proposed to display the remaining battery level on a display device (see, for example, Patent Document 1).

JP 2004-243922 A

  It would be convenient if the display device could display information other than the remaining battery level, such as vehicle speed or travel distance. However, if another indicator for displaying the vehicle speed or the like is separately provided in addition to the indicator for displaying the remaining battery level, the display device will be increased in size. In particular, in electrically assisted bicycles, downsizing of the display device is strongly desired.

  If the battery remaining amount and other information can be selectively displayed on the display, it is possible to avoid an increase in the size of the display device. Thus, it is conceivable to configure the display so that the display of the remaining battery level and the display of other information can be switched.

  However, in a display device having such a switchable display, if the remaining battery level decreases while other information such as the vehicle speed is displayed, there is a risk that the occupant will not notice the decrease in the remaining battery level. is there. For this reason, charging or battery replacement cannot be performed at an appropriate timing, and there is a risk that the auxiliary power will be lost against the occupant's will during traveling.

  The present invention has been made in view of such a point, and an object of the present invention is to make it easy for a passenger to reduce the remaining battery level while suppressing an increase in size in a display device for an electric assist bicycle capable of displaying a plurality of information. It is to be able to grasp.

An electric assist bicycle display device according to the present invention includes an electric motor that generates auxiliary power, a battery that supplies electric power to the electric motor, and a detector that detects a remaining amount of the battery. It is a display apparatus provided in. The display device includes a single display capable of selectively displaying a plurality of display items including at least the remaining battery level and other information, and when the other information is displayed on the display In addition, when the remaining amount of the battery detected by the detector becomes a threshold value or less, a control circuit that switches the display of the display so as to display the remaining amount of the battery instead of the other information, and the display A changeover switch for switching display of the indicator, and when the remaining amount of the battery is less than a threshold value and the remaining amount of the battery is displayed on the indicator, the indicator is turned on by the operation of the changeover switch. The same as the control circuit, or the display of the display is switched again so that the remaining amount of the battery is displayed instead of the other information when a predetermined condition is met after switching to display the information. Configured separately And it includes a control circuit, a. Here, one of the predetermined conditions is that the remaining amount of the battery is equal to or less than another threshold value that is smaller than the threshold value. One or more of the other threshold values are set, and one of them is zero. is there. The control circuit for switching the display of the display again is configured so that the display is operated by operating the changeover switch in a state where the remaining amount of the battery becomes zero and the remaining amount of the battery is displayed on the display. Is switched to display the vehicle speed, the display of the indicator is switched again so as to display the vehicle speed instead of the remaining battery level.

  ADVANTAGE OF THE INVENTION According to this invention, a passenger | crew can grasp | ascertain the fall of a battery remaining charge easily, suppressing the enlargement of the display apparatus of an electrically assisted bicycle.

It is a front view of a display apparatus. It is a side view of an electrically assisted bicycle. It is a block diagram of the control system of an electrically assisted bicycle. It is a flowchart of the automatic switching control of a display part. It is a flowchart of display item return control. It is a block diagram of the control system of the display apparatus which concerns on a modification.

  FIG. 1 is a front view of a display device 30 according to the present embodiment. FIG. 2 is a side view of the electrically assisted bicycle 1. The display device 30 is attached to the electrically assisted bicycle 1. The electrically assisted bicycle 1 is only an example of an electrically assisted bicycle to which the display device 30 is attached. The configuration of the electrically assisted bicycle to which the display device 30 is attached is not limited at all.

  As shown in FIG. 2, the electrically assisted bicycle 1 includes a body frame 2. The vehicle body frame 2 includes a head pipe 3, two tubes 4 extending rearward and downward from the head pipe 3, a tube 5 extending rearward and upward from the rear end of the tubes 4, and a rear end from the vicinity of the lower end of the tube 5. A pair of left and right stays 6 that extend, and a pair of left and right stays 7 that join the rear ends of both stays 6 and the upper portion of the tube 5 are provided.

  A front fork 8 is rotatably supported on the head pipe 3. A front wheel 9 is rotatably supported at the lower end of the front fork 8. A headlight 19 is attached to the front fork 8. A handle 10 is fixed to the upper end portion of the front fork 8. Although not shown in FIG. 2, the display device 30 is attached to the handle 10. However, the mounting position of the display device 30 is not particularly limited. A saddle 11 is attached to the upper end of the tube 5. A rear wheel 12 is rotatably supported at the rear end portion of the stay 6.

  The electrically assisted bicycle 1 includes a pedal 15b operated by an occupant and a pedal shaft 15 connected to the pedal 15b via a crank arm 15a. A sprocket 15 c is provided around the pedal shaft 15. A sprocket 16 a is provided in the hub 16 of the rear wheel 12. A chain 17 is wound around the sprocket 15c and the sprocket 16a.

  The electrically assisted bicycle 1 can travel with only the occupant's pedal operation and travel that combines the occupant's pedal operation with the drive of the electric motor 18 (see FIG. 3). However, the electrically assisted bicycle according to the present invention is not necessarily limited to the one capable of both the above-described traveling. It may be an electric assist bicycle capable of traveling only in combination with the pedal operation of the passenger and driving of the electric motor 18.

  The electric assist bicycle 1 includes a human power drive system 13 and an auxiliary power drive system 14. The human-powered drive system 13 is a drive system that applies a force applied to the pedal 15b (hereinafter referred to as a pedaling force) to the rear wheel 12 when an occupant steps on the pedal 15b. The auxiliary force drive system 14 is a drive system that provides auxiliary power from the electric motor 18 to the rear wheels 12 according to the force applied to the pedal 15b.

  The auxiliary force drive system 14 includes a battery unit 23 disposed between the tube 5 and the rear wheel 12, and an electric motor 18 (see FIG. 3) disposed in the hub 16. The driving force of the electric motor 18 is transmitted to the rear wheel 12 via a reduction mechanism and a one-way clutch (not shown). In the battery unit 23, a plurality of secondary batteries 20 are provided. The electrically assisted bicycle 1 includes a controller 50 that controls the electric motor 18 (see FIG. 3).

  As shown in FIG. 1, the display device 30 includes a display 31 that can selectively display a plurality of information. The specific configuration of the display 31 is not limited at all. The display device 31 may be, for example, a liquid crystal display device, an organic EL display device, or an assembly of LED elements. Next to the display 31, lamps 32 and 33 for identifying display items of the display 31 are provided. In this embodiment, the indicator 31 is configured to selectively display the remaining battery level and the vehicle speed. However, the display items on the display 31 need only be a plurality of items including the remaining battery level, and the specific contents of the display items other than the remaining battery level are not particularly limited. Other display items are not limited to the vehicle speed, and may be, for example, a travel distance. When the display item of the display 31 is the remaining battery level, the lamp 32 is lit. When the display item of the display 31 is the vehicle speed, the lamp 33 is lit.

  A changeover switch 34 is provided below the lamp 33. The changeover switch 34 is a switch for switching display items of the display 31. Each time the occupant presses the changeover switch 34, the display item on the display 31 is switched from the remaining battery level to the vehicle speed, or from the vehicle speed to the remaining battery level.

  A power switch 35 is provided on the left side of the display 31. Below the display 31, a switch 36 for turning on / off the headlight 19 and a lamp 37 indicating the ON / OFF state of the headlight 19 are arranged. On the left side of the display device 30, there are provided changeover switches 38a and 38b for adjusting the magnitude of the auxiliary power. In this embodiment, the magnitude of the auxiliary power can be adjusted in three stages. Three lamps 39 indicating the magnitude of the auxiliary power are provided to the right of the changeover switches 38a and 38b. However, the adjustment of the magnitude of the auxiliary power is not limited to three stages. Each time the occupant presses the changeover switch 38a, the auxiliary power increases by one step, and every time the passenger presses the changeover switch 38b, the auxiliary power decreases by one step.

  FIG. 3 is a control block diagram of the electrically assisted bicycle 1. The display device 30 incorporates a microcomputer having a central processing unit (hereinafter referred to as CPU) 40. The CPU 40 includes a switch input processing unit 41, a communication control unit 42, and a display control unit 43.

  The switch input processing unit 41 receives signals from the changeover switch 34, the power switch 35, the changeover switches 38a and 38b, and outputs the switch state to the communication control unit 42. The communication control unit 42 outputs items to be displayed on the display 31 to the display control unit 43 based on the switch state. The communication control unit 42 is connected to a communication interface 44, and receives information on the remaining battery level and vehicle speed from the controller 50 via the communication interface 44. The display control unit 43 controls the display 31 by outputting a signal to the display 31.

  The controller 50 incorporates a microcomputer having a CPU 60. In addition to the CPU 60, the controller 50 is provided with a motor drive circuit 52 that supplies current to the electric motor 18, a storage element 53 such as an EEPROM, and a communication interface 54.

  The CPU 60 includes a remaining amount calculation unit 61, a communication control unit 62, and a vehicle speed calculation unit 63. The remaining amount calculation unit 61 receives information on the secondary battery 20 and calculates the remaining battery amount of the secondary battery 20. The vehicle speed calculation unit 63 receives a signal from a vehicle speed sensor (not shown) and calculates the vehicle speed. The communication control unit 62 receives battery remaining amount information from the remaining amount calculating unit 61 and receives vehicle speed information from the vehicle speed calculating unit 63.

  The electrically assisted bicycle 1 is configured to add auxiliary power corresponding to the pedaling force of the occupant. The electrically assisted bicycle 1 is provided with a torque sensor (not shown) that detects the pedaling force of the occupant on the pedal 15b. The controller 50 includes a torque input processing unit 64, a torque current calculation unit 65, and a duty calculation unit 66. The torque input processing unit 64, the torque current calculation unit 65, and the duty calculation unit 66 are for generating auxiliary power corresponding to the pedaling force from the electric motor 18.

  The torque input processing unit 64 receives a signal from the torque sensor and outputs a torque value to the torque current calculation unit 65. As described above, in the electrically assisted bicycle 1, the occupant can operate the changeover switches 38 a and 38 b of the display device 30 to switch the magnitude of the auxiliary power in three stages. The communication control unit 62 receives information on the level value of the auxiliary power from the display device 30 and outputs the level value to the torque current calculation unit 65. The torque current calculation unit 65 calculates a current value to be supplied to the electric motor 18, that is, a current command value, based on the torque value and the auxiliary power level value. The motor drive circuit 52 is provided with a current detection circuit 52 a that detects the current of the electric motor 18. The duty calculator 66 receives the motor current value from the current detection circuit 52a, and calculates the duty ratio of the pulse voltage applied to the motor drive circuit 52 so that the motor current value matches the current command value. The duty calculator 66 outputs a signal related to the duty ratio of the pulse voltage, that is, a PWM signal, to the motor drive circuit 52. The motor drive circuit 52 receives power from the secondary battery 20 and supplies current to the electric motor 18.

  The CPU 60 is provided with a storage control unit 67. The storage control unit 67 writes information to the storage element 53 and reads information from the storage element 53. The storage controller 67 receives the level value of the auxiliary power from the torque current calculator 65 and the display item of the display 31 from the communication controller 62. The storage control unit 67 appropriately writes the level value and the display item in the storage element 53. The timing for writing the level value and the display item in the storage element 53 is not particularly limited. When the level value and display item are switched, the level value and display item after switching may be written. The level value and the display item may be written every predetermined time. In the present embodiment, when the power switch 35 is turned off, the level value and the display item are written.

  In the electrically assisted bicycle 1, when the remaining battery level is equal to or lower than the threshold value while the vehicle speed is displayed on the display 31 of the display device 30, the display on the display 31 is automatically switched from the vehicle speed to the remaining battery level. Next, automatic switching control of the display 31 will be described.

  The threshold value may be one, but may be two or more. In this embodiment, three threshold values of 0%, 10%, and 20% are set. In the present embodiment, the percentage of the remaining capacity with respect to the total battery capacity of the secondary battery 20 is used as the threshold value, but the current or voltage value of the secondary battery 20 itself may be used as the threshold value.

  FIG. 4 is a flowchart of the automatic switching control of the display device 31. This automatic switching control is executed by the CPU 40 of the display device 30. First, in step S1, it is determined whether or not the display 31 displays a display item other than the remaining battery level. In the present embodiment, since the display item other than the remaining battery level is only the vehicle speed, it is determined in step S1 whether or not the display 31 displays the vehicle speed. If a determination result is YES, it will progress to Step S2.

  In step S2, it is determined whether or not the battery remaining amount has changed from a state exceeding 20% to a state not exceeding 20%. If a determination result is YES, it will progress to step S3 and the display control part 43 will switch the display of the indicator 31 from a vehicle speed to a battery remaining charge. If the determination result of step S2 is NO, the process proceeds to step S4.

  In step S4, it is determined whether or not the battery remaining amount has changed from a state exceeding 10% to a state below 10%. If a determination result is YES, it will progress to step S5 and the display control part 43 will switch the display of the indicator 31 from a vehicle speed to a battery remaining charge. If the determination result of step S4 is NO, the process proceeds to step S6.

  In step S6, it is determined whether or not the remaining battery level has changed from 0% to 0%. In other words, it is determined whether or not the remaining battery level is exhausted. If a determination result is YES, it will progress to step S7 and the display control part 43 will switch the display of the indicator 31 from a vehicle speed to a battery remaining charge. If the determination result in step S6 is NO, the process returns.

  According to this automatic switching control, if the remaining battery level is lower than 20% when the display unit 31 displays the vehicle speed, the display on the display unit 31 changes from the vehicle speed to the remaining battery level. It is automatically switched. Therefore, the occupant can easily grasp that the remaining battery level has decreased, and can alert the occupant.

  Once the display is switched, it is possible to invalidate the input of the changeover switch 34 and continuously display the remaining battery level in order to keep the passenger's attention. However, it is inconvenient for the occupant if the operation using the changeover switch 34 becomes impossible. Therefore, in the present embodiment, even after the display on the display 31 is automatically switched, the display on the display 31 can be switched from the remaining battery level to the vehicle speed by operating the changeover switch 34. ing.

  After the display 31 is switched to the vehicle speed by the operation of the changeover switch 34, when the remaining battery level is further reduced and exceeds 10% to 10% or less, the display on the display unit 31 again changes from the vehicle speed to the remaining battery level. Is automatically switched to (see step S5). Therefore, the occupant can easily confirm that the remaining battery level has further decreased, and can strongly alert the occupant.

  Even when the remaining battery level is exhausted, the display on the display 31 is automatically switched from the vehicle speed to the remaining battery level (see step S7). Therefore, it is possible to reliably notify the occupant that the remaining battery level is exhausted. When the auxiliary power is lost, the occupant can easily recognize that the cause is a battery exhaustion.

  It is convenient for the occupant if the display item displayed when the power is turned off before the power is turned on is automatically displayed on the display 31. In the electrically assisted bicycle 1, the display items displayed when the power switch 35 is turned off are automatically displayed on the display 31 when the power switch 35 is turned on thereafter. Next, control for performing such automatic display, that is, display item return control will be described with reference to the flowchart of FIG.

  As described above, the display device 30 and the controller 50 are configured to communicate with each other (see FIG. 3). As shown in FIG. 5, in step S11, the CPU 40 determines whether or not the communication between the display device 30 and the controller 50 is the first communication after the power is turned on. If the determination result is NO, the process proceeds to step S12. In step S12, the CPU 40 determines whether or not the power switch 35 has been pressed. That is, it is determined whether or not it corresponds when the power is turned off. If the determination result in step S <b> 12 is YES, the communication control unit 62 of the controller 50 receives the display item displayed on the display 31 from the communication control unit 42 of the display device 30, and stores the display item in the storage control unit 67. Output. The storage control unit 67 writes the display item in the storage element 53. Thereby, the display item when the power is turned off is stored in the storage element 53.

  When the power is turned on, the display device 30 and the controller 50 perform the first communication, so the determination result in step S11 is YES. If the determination result of step S11 is YES, the process proceeds to step S14. In step S <b> 14, the storage control unit 67 of the controller 50 reads the stored display item, that is, the display item displayed on the display unit 31 when the power is turned off before, from the storage element 53. The communication control unit 62 receives the display item from the storage control unit 67 and transmits it to the communication control unit 42 of the display device 30. The communication control unit 42 outputs the display items to the display control unit 43, and the display control unit 43 causes the display 31 to display the display items. As a result, display items when the power is turned off are automatically displayed when the power is turned on.

  As described above, according to the display device 30, since the battery remaining amount and the vehicle speed are selectively displayed on the single display 31, an increase in the size of the display 31 can be avoided. According to this embodiment, the display device 30 can be made compact. If the remaining battery level falls below the threshold while displaying the vehicle speed, the display on the display 31 is automatically switched from the vehicle speed to the remaining battery level. Therefore, the occupant can easily grasp the decrease in the remaining battery level, and the occupant is expected to charge at an appropriate timing. Further, it is possible to avoid a situation in which the auxiliary power disappears against the occupant's will.

  After the display on the display 31 is automatically switched to the remaining battery level, the passenger may operate the changeover switch 34 to return the display on the display 31 to the vehicle speed. Even in such a case, when the remaining battery level further decreases and falls below another threshold value, the display on the display 31 is automatically switched again from the vehicle speed to the remaining battery level. Therefore, the occupant can easily grasp that the remaining battery level has further decreased. Further, even when the remaining battery level becomes zero after switching to the vehicle speed display by operating the changeover switch 34, the display on the display 31 is automatically switched from the vehicle speed to the remaining battery level. Therefore, the occupant can surely know that the remaining battery level has run out, and can easily recognize that the loss of auxiliary power is caused by the remaining battery level becoming zero.

  According to the electrically assisted bicycle 1, when the occupant turns on the power switch 35, the display items displayed when the power switch 35 is turned off before that time are automatically displayed on the display 31. For this reason, it is possible for an occupant who wants to display the display items displayed when the power is turned off again to save the trouble of operating the changeover switch 34 after the power switch 35 is turned on. For example, when the battery remaining amount is always displayed when the power is turned on, for a passenger who prefers to display the vehicle speed, after the power switch 35 is turned on, the display on the display 31 is changed from the battery remaining amount to the vehicle speed. In order to switch, it is necessary to operate the changeover switch 34. However, according to the electrically assisted bicycle 1, such an operation becomes unnecessary. On the other hand, it is possible to always display the vehicle speed when the power is turned on. However, if the power switch 35 is turned off in a state where the remaining battery level is reduced and the display 31 automatically switches to the remaining battery level, the vehicle speed is displayed when the power is turned on. There is a risk that you will not notice the lack of remaining amount. However, according to the electrically assisted bicycle 1, when the power switch 35 is turned off while the display on the display 31 is automatically switched to the remaining battery level, the battery is not displayed on the display 31 when the power switch 35 is turned on. The remaining amount will be displayed. Therefore, it is possible to alert the passenger strongly about the low battery level.

  In addition, the arrangement | positioning location of the memory element 53 which memorize | stores the display item at the time of a power supply OFF is not specifically limited. The storage element 53 can be disposed at any location of the electrically assisted bicycle 1. As shown in FIG. 6, the storage device 67 a and the storage element 53 may be provided in the display device 30.

  However, if the storage element 53 is provided in the controller 50 as in the present embodiment, it is not necessary to provide a storage element in the display device 30, and the configuration of the display device 30 can be simplified or miniaturized. Further, it is possible to unify information in the controller 50, that is, to collectively manage information in the controller 50.

  Although writing of display items to the storage element 53 may be performed every predetermined time, in the present embodiment, it is performed when the power is turned off. As a result, the number of times of writing to the storage element 53 can be reduced.

  In the embodiment, after the remaining battery level becomes 20% or less and the display on the display unit 31 is automatically switched to the remaining battery level, the display on the display unit 31 is switched to the vehicle speed by the operation of the changeover switch 34. In this case, when the remaining battery level becomes 10% or less thereafter, the display on the display 31 is automatically switched to the remaining battery level again. However, the condition for automatically switching the display on the display 31 again to the remaining battery level is not limited to the remaining battery level being equal to or less than another threshold (in this case, 10%).

  For example, the elapsed time from when the display 31 is switched to the vehicle speed by operating the changeover switch 34 is measured, and when the elapsed time exceeds a predetermined time, the display 31 is automatically set to the remaining battery level again. May be switched automatically. For example, a timer 55 (see FIG. 3) capable of measuring the elapsed time is provided in the controller 50, and the display control unit 43 switches the display on the display 31 to the remaining battery level again when the measured time exceeds a predetermined time. It may be.

  Further, the controller 50 is configured so that the travel distance can be measured from when the display 31 is switched to the vehicle speed by the operation of the changeover switch 34, and when the travel distance exceeds a predetermined distance, the display on the display 31 is displayed. May be automatically switched to the remaining battery level again.

  In the embodiment, the power switch 35, the changeover switches 38 a and 38 b, and the changeover switch 34 are provided in the display device 30. However, the power switch 35, the changeover switches 38 a and 38 b, or the changeover switch 34 may be provided separately from the display device 30. In other words, the display device 30 may not necessarily include the power switch 35, the changeover switches 38a and 38b, and the changeover switch 34.

  In the embodiment, after the battery 31 is switched to the vehicle speed by the operation of the control circuit that switches the display on the display 31 to the battery remaining and the changeover switch 34 when the battery remaining becomes the threshold value or less, the battery remaining The control circuit that switches the display on the display unit 31 to the remaining battery level again when the value falls below the other threshold is the CPU 40 and is the same circuit. However, these control circuits may be configured separately. The display control circuit for displaying the display item when the power is turned off when the power is turned on next time is also the CPU 40 and is the same as the control circuit. However, they may be separate circuits.

1 Electric Assist Bicycle 18 Electric Motor 20 Secondary Battery (Battery)
30 Display Device 31 Display 34 Changeover Switch 35 Power Switch 40 CPU (Control Circuit, Display Control Circuit)
50 Controller (motor control circuit)
53 Memory element 55 Timer 61 Remaining amount calculation section (detector)
67 Storage controller (writing device)

Claims (4)

A display device provided in an electrically assisted bicycle, comprising: an electric motor that generates auxiliary power; a battery that supplies electric power to the electric motor; and a detector that detects a remaining amount of the battery,
A single indicator capable of selectively displaying a plurality of display items including at least the remaining battery level and other information;
When the other information is displayed on the display unit, if the remaining battery level detected by the detector falls below a threshold, the remaining battery level is displayed instead of the other information. A control circuit for switching the display of the display device,
A changeover switch for switching the display of the indicator;
In a state where the remaining battery level is below the threshold value and the remaining battery level is displayed on the display unit, the display unit is switched to display the other information by operating the changeover switch. Later, when a predetermined condition is met, a control circuit configured to be the same as or different from the control circuit, which switches the display of the display again so as to display the remaining amount of the battery instead of the other information, equipped with a,
One of the predetermined conditions is that the remaining amount of the battery is equal to or less than another threshold value smaller than the threshold value,
One or more of the other threshold values are set, one of which is zero,
The control circuit for switching the display of the display again is configured so that the display is operated by operating the changeover switch in a state where the remaining battery level is zero and the remaining battery level is displayed on the display When the vehicle is switched to display the vehicle speed, the display device of the electric assist bicycle is configured to switch the display of the display again so as to display the vehicle speed instead of the remaining battery level . The electric assist bicycle or the display device includes a timer that measures an elapsed time from when the display is switched to display the other information by an operation of the changeover switch,
Another one of the predetermined conditions, the elapsed time is to be a predetermined time or more, motor-assisted bicycles of the display device according to claim 1. The electrically assisted bicycle or the display device includes a power switch that switches power ON / OFF, a storage element, and a writing device that writes a display item displayed on the display to the storage element,
When the power switch is turned on, a display item displayed on the display device when the power switch is turned off before that is read from the storage element, and the display item is displayed on the display device. The display device for an electrically assisted bicycle according to claim 1, further comprising a control circuit. An electric motor for generating steering power, and a motor control circuit and a storage element for controlling the electric motor, a battery for supplying electric power to said electric motor, a detector for detecting the remaining amount of the battery, wherein An electrically assisted bicycle comprising the display device according to item 1 and a power switch for switching power ON / OFF,
The motor control circuit and the control circuit of the display device are configured to be communicable,
The motor control circuit writes the display items displayed on the display unit of the display device to the storage element,
The control circuit of the display device communicates with the motor control circuit when the power switch is turned on, so that the display items displayed on the display device when the power switch is turned off before that time. Is read from the storage element, and the display item is displayed on the display.

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