JP7540327B2 - Elevator lighting control device - Google Patents

Description

This disclosure relates to an elevator lighting adjustment device.

Patent document 1 discloses an elevator display device. The display device lights up multiple light-emitting elements so that the difference in the cumulative time that the multiple light-emitting elements are turned on is small.

Japanese Patent Application Publication No. 8-119548

The display device described in Patent Document 1 reverses the combination of turning on and off a number of light-emitting elements between day and night. However, in this case, the difference in the cumulative time each of the light-emitting elements is turned on does not become smaller than a certain value. For this reason, it is not possible to prevent differences in the luminance of each of the light-emitting elements.

The present disclosure has been made to solve the above-mentioned problems. The purpose of the present disclosure is to provide an elevator lighting adjustment device that can suppress differences in the luminance of each of a plurality of light-emitting elements.

The elevator lighting adjustment device according to the present disclosure includes a storage unit that stores a plurality of pieces of lighting time information corresponding to the cumulative time each of a plurality of light-emitting elements has been lit for an elevator display panel that displays information by a combination of turning on and off a plurality of light-emitting elements, and a command unit that uses the plurality of lighting time information stored in the storage unit to create a lighting adjustment command to turn off a first light-emitting element that has been lit for the longest cumulative time among the plurality of light-emitting elements, and to turn on a second light-emitting element that is not the first light-emitting element among the plurality of light-emitting elements.

According to the present disclosure, the elevator lighting adjustment device creates a lighting adjustment command to turn off a first light-emitting element that has been on for the longest cumulative time among the multiple light-emitting elements, and to turn on a second light-emitting element that is not the first light-emitting element among the multiple light-emitting elements. This makes it possible to prevent differences in the luminance of each of the multiple light-emitting elements on the display panel.

1 is a diagram showing a configuration of a display device to which an elevator lighting adjustment device in embodiment 1 is applied. FIG. 1 is a block diagram of an elevator lighting adjustment device in embodiment 1. FIG. A figure showing an example of lighting up a display device to which the elevator lighting adjustment device in embodiment 1 is applied. A figure showing an example of lighting adjustment processing performed by the elevator lighting adjustment device in embodiment 1. 1 is a hardware configuration diagram of an elevator lighting adjustment device in embodiment 1. FIG. FIG. 11 is a block diagram of an elevator lighting adjustment device in embodiment 2.

The embodiments for implementing the present disclosure will be described with reference to the attached drawings. Note that in each drawing, the same or corresponding parts are given the same reference numerals. Duplicate descriptions of the parts will be appropriately simplified or omitted.

Embodiment 1.
FIG. 1 is a configuration diagram of a display device to which an elevator lighting adjustment device according to the first embodiment is applied.

The elevator system in FIG. 1 is installed in a building (not shown). The elevator system includes a control panel 1, a display device 2, and a lighting adjustment device 3. The control panel 1 is installed in a machine room (not shown) of the building.

The display device 2 includes a display panel 4 and a display controller 5.

The display panel 4 is provided inside the car (not shown). The display panel 4 is positioned in a position that is visible to users inside the car. The display panel 4 is equipped with a number of light-emitting elements 6.

For example, each of the multiple light-emitting elements 6 is a light-emitting diode. Each of the multiple light-emitting elements 6 is provided so that it can be lit by passing a current through it. For example, 35 light-emitting elements 6 are provided in the display panel 4. The multiple light-emitting elements 6 are arranged in a 7-row x 5-column grid. The rows of the grid consisting of the multiple light-emitting elements 6 are distinguished by numbers from the first row to the seventh row. The columns of the grid consisting of the multiple light-emitting elements 6 are distinguished by letters from column a to column e. For example, the light-emitting element 6 in (4c) is the light-emitting element 6 located in the fourth row and c-th column of the grid.

The display controller 5 is provided in the car. The display controller 5 includes a communication unit 7, a control unit 8, and a drive unit 9.

The communication unit 7 is electrically connected to the control panel 1.

The control unit 8 receives cage position information from the communication unit 7.

The drive unit 9 is electrically connected to the display panel 4.

The lighting adjustment device 3 is provided adjacent to the display controller 5 inside the car. The lighting adjustment device 3 is electrically connected to the display controller 5.

When the elevator system is in operation, the control panel 1 controls the raising and lowering of the car. The control panel 1 transmits information about the car's position to the communication unit 7.

The communication unit 7 receives cage position information from the control panel 1. The communication unit 7 transmits the cage position information to the control unit 8.

The control unit 8 receives information about the cage's position from the communication unit 7. The control unit 8 uses the cage's position information to create display information for combinations in which each of the multiple light-emitting elements 6 is turned on or off. The control unit 8 transmits the display information to the lighting adjustment device 3 and the drive unit 9.

The drive unit 9 uses the display information to control the current flowing through each of the multiple light-emitting elements 6. For example, the drive unit 9 turns on or off each of the multiple light-emitting elements 6 using a time-division dynamic lighting method. In this case, the drive unit 9 passes a current intermittently through a certain light-emitting element 6 at a specified cycle.

When the drive unit 9 intermittently passes a current through a certain light-emitting element 6 at a specified cycle, the light-emitting element 6 repeats the operation of emitting light at that cycle and extinguishing the emitted light. If the length of the cycle is shorter than a certain value, the light-emitting element 6 is recognized by humans as being continuously lit. In the display device 2, the length of the cycle is shorter than a certain value. In the normal state, the light-emitting element 6 repeats the operation of emitting light and extinguishing the emitted light so that the duty ratio, which is the length of time that the light is emitted relative to the length of one cycle, is 50%.

The display panel 4 displays information by combining lit and unlit light-emitting elements 6. Figure 1 shows a display panel 4 displaying the character "2." A solid light-emitting element 6 represents a lit light-emitting element 6. An unlit light-emitting element 6 represents an unlit light-emitting element 6.

The lighting adjustment device 3 receives display information from the control unit 8. Using the display information, the lighting adjustment device 3 stores lighting time information of the cumulative time that a certain light-emitting element 6 has been lit up to now. The lighting adjustment device 3 stores multiple pieces of lighting time information corresponding to multiple light-emitting elements 6.

When the cumulative time that any of the multiple light-emitting elements 6 has been lit exceeds a specified threshold, the lighting adjustment device 3 transmits information to the control panel 1 via the display controller 5 that the cumulative time that a certain light-emitting element 6 has been lit exceeds the specified threshold.

If no car call registration is performed for a specified period of time or longer, the control panel 1 puts the elevator system into a paused state. The control panel 1 sends pause information to the communication unit 7 to indicate that the system is in a paused state. When the communication unit 7 receives the pause information, it sends the pause information to the control unit 8. When the control unit 8 receives the pause information, it sends the pause information to the lighting adjustment device 3.

When the lighting adjustment device 3 receives the pause information, it performs a lighting adjustment process. In the lighting adjustment process, the lighting adjustment device 3 creates a lighting adjustment command to turn on or off each of the multiple light-emitting elements 6 according to the cumulative time that each of the multiple light-emitting elements 6 has been turned on. The lighting adjustment device 3 transmits the lighting adjustment command to the control unit 8.

When the control unit 8 receives a lighting adjustment command, it creates display information corresponding to the lighting adjustment command. The control unit 8 transmits the display information to the lighting adjustment device 3 and the drive unit 9. In this case, the drive unit 9 turns on or off each of the multiple light-emitting elements 6 based on the display information. The lighting adjustment device 3 uses the display information to update each of the multiple pieces of lighting time information.

In the lighting adjustment process, the lighting adjustment device 3 creates lighting adjustment commands at specified intervals and sends them to the control unit 8. When the control panel 1 switches the elevator from a paused state to an operational state, or when the cumulative time that the light-emitting elements 6 have been lit becomes the same for all light-emitting elements 6, the lighting adjustment device 3 ends the lighting adjustment process.

Next, the lighting adjustment process performed by the lighting adjustment device 3 will be described with reference to FIG.
FIG. 2 is a block diagram of the elevator lighting adjustment device in the first embodiment.

As shown in FIG. 2, the lighting adjustment device 3 includes a memory unit 10, an adder unit 11, an alarm unit 12, and a command unit 13.

The memory unit 10 stores multiple pieces of lighting time information.

The adder 11 receives display information from the control unit 8 of the display controller 5. When the adder 11 receives display information, it calculates the value of the time for which a certain light-emitting element 6 is turned on based on the display information. The adder 11 obtains lighting time information corresponding to the light-emitting element 6 from the storage unit 10. The adder 11 then adds the value of the time for which the light-emitting element 6 is turned on based on the display information to the cumulative lighting time in the lighting time information. The adder 11 updates the lighting time information stored in the storage unit 10 to lighting time information to which the lighting time based on the display information has been added. The adder 11 performs the same process for all light-emitting elements 6 that are turned on based on the received display information. In this case, the adder 11 updates multiple pieces of lighting time information corresponding to all light-emitting elements 6 that are turned on based on the received display information.

The alarm unit 12 acquires a plurality of pieces of lighting time information from the storage unit 10 at regular intervals. In this case, for each of the plurality of pieces of lighting time information, the alarm unit 12 determines whether or not the cumulative lighting time of the corresponding light-emitting element 6 exceeds a specified threshold. The specified threshold is a value of the LED's lifespan estimated based on the characteristics between the cumulative lighting time of the LED and the LED luminance that decreases according to the cumulative lighting time. If there is a light-emitting element 6 whose cumulative lighting time exceeds the specified threshold, the alarm unit 12 issues information to the control panel 1 via the communication unit 7 and control unit 8 of the display controller 5 that the cumulative lighting time of the light-emitting element 6 has exceeded the specified threshold.

The command unit 13 receives pause information from the control unit 8 of the display controller 5. When the command unit 13 receives pause information, it performs lighting adjustment processing.

In the lighting adjustment process, the command unit 13 acquires multiple pieces of lighting time information from the memory unit 10. The command unit 13 uses the multiple pieces of lighting time information to identify one or more first light-emitting elements, which are one or more light-emitting elements 6 that have been turned on for the longest cumulative time among the multiple light-emitting elements 6. The command unit 13 creates a lighting adjustment command to turn off the one or more light-emitting elements 6 that have been turned on for the longest cumulative time as first light-emitting elements, and to turn on one or more second light-emitting elements that are the other one or more light-emitting elements 6. The command unit 13 transmits the lighting adjustment command to the control unit 8.

In the lighting adjustment process, the command unit 13 repeats the process of creating a lighting adjustment command at regular intervals. When the control panel 1 switches the elevator system from a paused state to an operational state, or when the cumulative time that the light-emitting elements 6 have been lit becomes the same for all light-emitting elements 6, the command unit 13 ends the lighting adjustment process.

Next, an example of the lighting adjustment process of the lighting adjustment device 3 will be described with reference to FIG. 3 and FIG.
Fig. 3 is a diagram showing an example of lighting of a display device to which the elevator lighting adjustment device in embodiment 1 is applied. Fig. 4 is a diagram showing a plurality of light-emitting elements that are turned on by a lighting adjustment process performed by the elevator lighting adjustment device in embodiment 1.

Figure 3 (A) shows the display pattern of the display panel 4 displaying the character "1". A display controller 5 (not shown) lights up the light-emitting elements 6 of (1c), (2c), (3c), (4c), (5c), (6c), and (7c). In this case, an adder 11 of the lighting adjustment device 3 (not shown) updates the corresponding lighting time information among the lighting time information stored in the memory unit 10.

(B) in FIG. 3 shows the display pattern of the display panel 4 displaying the character "2". The display controller 5 lights up the light-emitting elements 6 at (1b), (1c), (1d), (2a), (2e), (3e), (4d), (5c), (6b), (7a), (7b), (7c), (7d), and (7e). In this case, the adder 11 of the lighting adjustment device 3 updates the corresponding lighting time information among the lighting time information stored in the memory unit 10.

(C) in FIG. 3 shows the display pattern of the display panel 4 displaying the character "3". The display controller 5 lights up the light-emitting elements 6 at (1b), (1c), (1d), (2a), (2e), (3e), (4b), (4c), (4d), (5e), (6a), (6e), (7b), (7c), and (7d). In this case, the adder 11 of the lighting adjustment device 3 updates the corresponding lighting time information among the lighting time information stored in the memory unit 10.

In FIG. 3D, Table 20 is a table visually representing multiple pieces of lighting time information stored in the memory unit 10 when the display panel 4 displays the characters "1", "2", and "3" for one hour each. Table 20 represents the cumulative time that each of the multiple light-emitting elements 6 has been lit. The rows of Table 20 correspond to the rows of the multiple light-emitting elements 6 arranged in a grid pattern on the display panel 4. The columns of Table 20 correspond to the columns of the multiple light-emitting elements 6 arranged in a grid pattern on the display panel 4. The numbers inside Table 20 represent the cumulative time that the corresponding light-emitting element 6 has been lit. The unit of the numbers is hours [hr]. For example, in the fourth row, column c of Table 20, the number "2" represents that the cumulative time that the light-emitting element 6 of (4c) has been lit is two hours.

Then, in FIG. 4, the control panel 1 puts the elevator into a pause state. The command unit 13 of the lighting adjustment device 3 performs lighting adjustment processing.

Table 21 is a table visually representing a plurality of pieces of lighting time information stored in the memory unit 10 when the elevator is in a stopped state. The numbers in Table 21 are the same as the numbers in Table 20 in FIG. 3 (D). The command unit 13 identifies the light-emitting elements 6 of (1c) and (7c) as the light-emitting elements 6 with the longest cumulative lighting time among the plurality of light-emitting elements 6. The command unit 13 creates a lighting adjustment command to turn off the light-emitting elements 6 of (1c) and (7c) and to turn on the plurality of light-emitting elements 6 other than the light-emitting elements 6 of (1c) and (7c). The command unit 13 transmits the lighting adjustment command to the display controller 5. The display controller 5 receives the lighting adjustment command. The display controller 5 turns on the plurality of light-emitting elements 6 in the display panel 4 based on the lighting adjustment command. The plurality of light-emitting elements 6 are lit in the combination shown in FIG. 4 (A).

Table 22 is a table visually representing a plurality of pieces of lighting time information stored in the memory unit 10 after the lighting adjustment shown in FIG. 4A has been performed for one hour. The cumulative lighting time of the light-emitting elements 6 (1b), (1d), (2a), (2e), (3a), (4c), (4d), (5c), (7b), and (7d), which are the light-emitting elements with the second longest cumulative lighting time when the device was in the paused state, increases from two hours to reach three hours. As a result, the command unit 13 identifies the light-emitting elements 6 (1b), (1c), (1d), (2a), (2e), (3e), (4c), (4d), (5c), (7b), (7c), and (7d) as the light-emitting elements 6 with the longest cumulative lighting time among the plurality of light-emitting elements 6. The command unit 13 creates a lighting adjustment command to turn off the plurality of light-emitting elements 6 with the longest cumulative lighting time and turn on the light-emitting elements 6 other than the plurality of light-emitting elements 6 with the longest cumulative lighting time among the plurality of light-emitting elements 6, and transmits the command to the display controller 5. The display controller 5 lights up the multiple light-emitting elements 6 on the display panel 4 based on the lighting adjustment command. The multiple light-emitting elements 6 light up in the combination shown in FIG. 4(B).

Table 23 is a table visually representing a plurality of pieces of lighting time information stored in the memory unit 10 after the lighting adjustment shown in FIG. 4B has been performed for one hour. The light-emitting elements 6 (2c), (3c), (4b), (5e), (6a), (6b), (6c), (6e), (7a), and (7e), which are the light-emitting elements with the third longest cumulative lighting time when the hibernation state was entered, have a cumulative lighting time that increases from two hours to three hours. As a result, the command unit 13 identifies the light-emitting elements 6 (1b), (1c), (1d), (2a), (2c), (2e), (3a), (3c), (4b), (4c), (4d), (5c), (5e), (6a), (6b), (6c), (6e), (7a), (7b), (7c), (7d), and (7e) as the light-emitting elements 6 with the longest cumulative lighting time among the plurality of light-emitting elements 6. The command unit 13 creates a lighting adjustment command to turn off the multiple light-emitting elements 6 with the longest cumulative lighting time and turn on the multiple light-emitting elements 6 other than the multiple light-emitting elements 6 with the longest cumulative lighting time, and transmits the lighting adjustment command to the display controller 5. The display controller 5 turns on the multiple light-emitting elements 6 in the display panel 4 based on the lighting adjustment command. The multiple light-emitting elements 6 are lit in the combination shown in FIG. 4B.

Table 24 is a table visually showing a plurality of pieces of lighting time information stored in the memory unit 10 after the lighting adjustment shown in FIG. 4C has been performed for one hour. The light-emitting elements 6 (1a), (1e), (2b), (2d), (3a), (3b), (3d), (4a), (4e), (5a), (5b), (5d), and (6d), which are the light-emitting elements with the shortest cumulative lighting time when the device was in the paused state, have their cumulative lighting time increase from two hours to three hours. As a result, the command unit 13 detects that the cumulative lighting time has become the same value for all the light-emitting elements 6. In this case, the command unit 13 creates a lighting adjustment command to turn off all the light-emitting elements 6. The command unit 13 transmits the lighting adjustment command to the display controller 5. The command unit 13 ends the lighting adjustment process. The display controller 5 turns off all the light-emitting elements 6 in the display panel 4 based on the lighting adjustment command.

According to the above-described embodiment 1, the lighting adjustment device 3 includes a storage unit 10 and a command unit 13. The lighting adjustment device 3 creates a lighting adjustment command to turn on a first light-emitting element among the plurality of light-emitting elements 6 and turn off a second light-emitting element among the plurality of light-emitting elements 6 according to the cumulative time that each of the plurality of light-emitting elements 6 has been turned on. Therefore, the lighting adjustment device 3 can turn on the plurality of light-emitting elements 6 until the difference in the cumulative time that each of the plurality of light-emitting elements 6 has been turned on disappears. Variation in the speed at which the luminance of each of the plurality of light-emitting elements 6 decreases can be suppressed. As a result, it is possible to suppress the occurrence of differences in the luminance of each of the plurality of light-emitting elements 6. Note that the lighting adjustment process is a process for adjusting the overall luminance of the plurality of light-emitting elements 6 to the luminance of the light-emitting element 6 whose luminance decreases the most. Therefore, the decrease in luminance is promoted in the entire plurality of light-emitting elements 6. On the other hand, in general, when luminance unevenness occurs, that is, there is a difference in luminance, rather than when the luminance of the plurality of light-emitting elements 6 has decreased, the user determines that the plurality of light-emitting elements 6 have deteriorated. Therefore, even if the lighting adjustment device 3 reduces the luminance of the entire plurality of light-emitting elements 6, the usage period of the display device can be extended.

The lighting adjustment device 3 also creates a lighting adjustment command by performing lighting adjustment processing when the elevator system is in a paused state. This allows the lighting adjustment processing of the display device to be performed without interfering with normal operation. Furthermore, if the difference in the cumulative time that the multiple light-emitting elements 6 are turned on during one paused state does not disappear, the lighting adjustment processing of the display device can be performed in the next paused state.

The lighting adjustment device 3 also includes an alarm unit 12. This allows the lighting adjustment device 3 to notify an external device of the deterioration state of each of the multiple light-emitting elements 6. Furthermore, by knowing the deterioration state, workers can replace the light-emitting elements 6 before the brightness drops significantly and a user requests that the light-emitting elements 6 be replaced.

The command unit 13 may create a lighting adjustment command to turn on the second light-emitting element with a duty ratio higher than the normal duty ratio. For example, the command unit 13 may create a lighting adjustment command to turn on the second light-emitting element with a duty ratio of 75% instead of the normal 50%. In this case, the memory unit 10 stores lighting time information of the cumulative time that a certain light-emitting element 6 has been operating to emit light as the cumulative time that the certain light-emitting element 6 has been turned on so far. Therefore, the time for which the second light-emitting element is turned on can be shortened in the lighting adjustment process.

The display device 2 may be provided at the elevator hall. In this case, the display panel 4 may be placed in a position where it can be seen by users at the hall. The lighting adjustment device 3 may be provided at the hall.

The information displayed by the display device 2 may also be the direction in which the car is operating.

In this case, the lighting adjustment device 3 may be provided inside the display controller 5.

Next, an example of hardware constituting the lighting adjustment device 3 will be described with reference to FIG.
FIG. 5 is a hardware configuration diagram of the elevator lighting adjustment device in the first embodiment.

Each function of the lighting adjustment device 3 can be realized by a processing circuit. For example, the processing circuit includes at least one processor 100a and at least one memory 100b. For example, the processing circuit includes at least one dedicated hardware 200.

When the processing circuit includes at least one processor 100a and at least one memory 100b, each function of the lighting adjustment device 3 is realized by software, firmware, or a combination of software and firmware. At least one of the software and firmware is written as a program. At least one of the software and firmware is stored in at least one memory 100b. At least one processor 100a realizes each function of the lighting adjustment device 3 by reading and executing the program stored in at least one memory 100b. At least one processor 100a is also called a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, or DSP. For example, at least one memory 100b is a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, EEPROM, etc., a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD, etc.

When the processing circuit includes at least one dedicated hardware 200, the processing circuit is realized, for example, by a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof. For example, each function of the lighting adjustment device 3 is realized by a processing circuit. For example, each function of the lighting adjustment device 3 is realized collectively by a processing circuit.

Some of the functions of the lighting adjustment device 3 may be realized by dedicated hardware 200, and the other parts may be realized by software or firmware. For example, the function of storing lighting time information may be realized by a processing circuit as dedicated hardware 200, and functions other than the function of storing lighting time information may be realized by at least one processor 100a reading and executing a program stored in at least one memory 100b.

In this way, the processing circuit realizes each function of the lighting adjustment device 3 using hardware 200, software, firmware, or a combination of these.

Although not shown, each function of the display controller 5 is realized by a processing circuit equivalent to the processing circuit that realizes each function of the lighting adjustment device 3.

Embodiment 2.
6 is a block diagram of an elevator lighting adjustment device in accordance with embodiment 2. Note that the same or corresponding parts as those in embodiment 1 are denoted by the same reference numerals, and the description of these parts is omitted.

As shown in FIG. 6, in the second embodiment, the lighting adjustment device 3 includes a brightness adjustment unit 14.

The luminance adjustment unit 14 acquires multiple pieces of lighting time information from the storage unit 10. Based on the characteristics between the cumulative time that the LED is turned on and the luminance of the LED that decreases according to the cumulative time that the LED is turned on, the luminance adjustment unit 14 diagnoses the deterioration state of the first light-emitting element that has been turned on for the longest cumulative time using the lighting time information. The luminance adjustment unit 14 estimates the luminance state of the first light-emitting element by diagnosing the deterioration state of the first light-emitting element. The luminance adjustment unit 14 creates a luminance adjustment command to turn on the multiple light-emitting elements 6 so that the duty ratio of the multiple light-emitting elements 6 in the operating state is increased according to the deterioration state of the first light-emitting element. For example, the luminance adjustment unit 14 creates a luminance adjustment command to change the duty ratio of the multiple light-emitting elements 6 in the operating state from 50% to 60% according to the deterioration state of the first light-emitting element.

The brightness adjustment unit 14 transmits a brightness adjustment command to the control unit 8 of the display device 2. When the elevator is in operation, the display device 2 lights up the multiple light-emitting elements 6 so that the duty ratio is in accordance with the brightness adjustment command.

According to the second embodiment described above, the lighting adjustment device 3 includes a brightness adjustment unit 14. When the duty ratio of the multiple light-emitting elements 6 is changed to a high value, the brightness of the multiple light-emitting elements 6 increases. This can offset or suppress a decrease in the brightness of the light-emitting elements 6 due to deterioration of the light-emitting elements 6. As a result, it is possible to suppress a decrease in the overall brightness of the multiple light-emitting elements 6 in the display panel 4.

The brightness adjustment unit 14 may diagnose the deterioration state of each of the plurality of light-emitting elements 6. In this case, the brightness adjustment unit 14 may create a brightness adjustment command to change the duty ratio of each of the plurality of light-emitting elements 6 in the operating state according to the deterioration state of each of the plurality of light-emitting elements 6.

1 Control panel, 2 Display device, 3 Lighting adjustment device, 4 Display panel, 5 Display controller, 6 Light-emitting element, 7 Communication unit, 8 Control unit, 9 Drive unit, 10 Memory unit, 11 Addition unit, 12 Alarm unit, 13 Command unit, 14 Brightness adjustment unit, 100a Processor, 100b Memory, 200 Hardware

Claims (5)

a storage unit for storing a plurality of pieces of lighting time information, each of which corresponds to a cumulative time that each of a plurality of light-emitting elements is turned on, for an elevator display panel that displays information by a combination of turning on and off a plurality of light-emitting elements;
a command unit that generates a lighting adjustment command by using the lighting time information stored in the memory unit to turn off a first light-emitting element having the longest cumulative lighting time among the plurality of light-emitting elements and turn on a second light-emitting element other than the first light-emitting element among the plurality of light-emitting elements;
An elevator lighting adjustment device equipped with The elevator lighting adjustment device according to claim 1, wherein the command unit creates the lighting adjustment command when the elevator is in an out-of-service state. a notification unit that notifies an elevator control panel of a light emitting element whose cumulative light-on time exceeds a prescribed threshold value when the light emitting element is present, using the plurality of pieces of lighting time information stored in the storage unit;
The elevator lighting adjustment device according to claim 1 or 2, further comprising: The elevator lighting adjustment device according to any one of claims 1 to 3, wherein the command unit creates the lighting adjustment command to turn on the second light-emitting element at a duty ratio higher than the duty ratio in a normal state when the plurality of light-emitting elements are of a dynamic lighting type. a brightness adjustment unit that, when the plurality of light-emitting elements are of a dynamic lighting type, creates a brightness adjustment command to cause the plurality of light-emitting elements to emit light so that a duty ratio of the plurality of light-emitting elements in an operating state of the elevator is increased according to an accumulated time for which the first light-emitting element is turned on, using a plurality of lighting time information stored in the storage unit;
The elevator lighting adjustment device according to any one of claims 1 to 4, further comprising:

Images