JP2011123431A - Life determining device of light-emitting device display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine the exchange time of a light-emitting device uniformly and efficiently without recourse to the feeling or experience of each maintenance person. <P>SOLUTION: The life determining device includes: photographing means 2 and 3 for photographing an optical image emitted from the light-emitting device display device 1; and a portable terminal 4 for maintenance, for determining the life of the light-emitting device from the photographed optical image. The portable terminal 4 for maintenance includes: data storing means 21a and 21b for storing the gray scale display data of a predetermined stage number and threshold data for life determination; a converting means 22a for incorporating the photographed optical image and converting it into a real gray scale based on the predetermined stage number; a displaying means 22b for displaying the gray scale display data and the converted real gray scale; and a life determining means 22c for determining that the light-emitting device reaches the life when the real gray scale reaches a life determination threshold data, and reporting the exchange time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lifetime determination apparatus for a light emitting device display apparatus that determines the lifetime of a light emitting device such as an LED (light emitting diode) used in a display apparatus installed on each landing floor of an elevator.

  As an elevator display device using a light emitting device, a liquid crystal (LCD) display device that displays the floor position of the elevator car, an operation button that is arranged around the display device and operates the elevator, and an operation button are usually used. A mode changeover switch for switching from the operation mode to the contrast operation mode, and these display device, operation button and mode changeover switch are connected, and a voltage converter, potential meter and CPU for changing the contrast of the display device are internally provided. When a maintenance staff operates the mode change switch, the CPU determines that the mode change signal is generated, and changes the operation button from the normal operation mode to the contrast operation mode. Thereafter, the voltage conversion device and the potential meter are operated with the operation buttons, the contrast of the liquid crystal display device is adjusted via the CPU, and set to an optimum contrast (for example, see Patent Document 1).

  In recent years, display devices using light emitting devices such as LEDs (light emitting diodes) have been developed.

JP 2000-293118 A

  By the way, unlike the conventional general display apparatus, the above light emitting devices such as LEDs do not have the phenomenon of running out of balls, so it is completely unknown how to determine the lifetime. As a result, it is difficult to specify the replacement time of the LED and the like, and it is necessary to rely on the feeling and experience of individual maintenance personnel, and it is expected that there will be large variations in the replacement time for each maintenance worker in the future.

  The present invention has been made in view of the above circumstances, and does not rely on the feeling or experience of individual maintenance personnel, and uniformly and efficiently determines the replacement timing of the light emitting device or predicts the replacement timing. An object of the present invention is to provide a device display device life determination device.

  Another object of the present invention is to provide a light emitting device display device that automatically performs the light emitting device ordering process when the replacement time of the light emitting device is determined or when the replacement time is predicted, thereby reducing the burden on maintenance personnel. It is in providing the lifetime determination apparatus.

(1) In order to solve the above-mentioned problem, a lifetime determination device for a light-emitting device display device according to the present invention includes a photographing means for photographing a light image emitted from a light-emitting device display device installed at each floor of an elevator, and the photographing device. A portable terminal for maintenance that captures an optical image captured by the means and determines the lifetime of the light emitting device that constitutes the light emitting device display device,
The maintenance portable terminal includes a data storage means for storing a predetermined number of steps of grayscale display data and lifetime determination threshold data, and a light image captured by the photographing means to obtain a predetermined number of steps of grayscale. Grayscale conversion means for conversion, grayscale display means for displaying grayscale display data of a predetermined number of stages stored in the data storage means, and actual grayscale converted by the grayscale conversion means, and the actual grayscale The light emitting device has reached the end of its life when a scale is instructed not to recognize a predetermined stage of the gray scale display data or when the actual gray scale reaches the end of life determination threshold data It is the structure provided with the lifetime determination means which determines with these, and alert | reports replacement | exchange of the said light emitting device.

(2) Moreover, as a portable terminal for maintenance in the lifetime determination device of the light emitting device display device according to the present invention, the lifetime determination means has newly reached the lifetime of the light emitting device in the configuration described in (1). If it is determined that the actual gray scale level value converted by the gray scale converting means at the previous inspection is compared with the actual gray scale level value at the current inspection, the current level value is determined in advance by a predetermined value. In this configuration, a contrast adjustment means is provided for adjusting the contrast of the light image emitted from the light emitting device display device by sending a contrast increase adjustment signal to the corresponding light emitting device display device via the elevator control device when the level is lowered by the level or more.

(3) Further, as the maintenance portable terminal in the lifetime determination device for the light emitting device display device according to the present invention, the actual gray scale converted by the gray scale conversion means for each inspection is newly added to the configuration of (2). Based on the history data storage means for accumulating and storing past history data such as the scale level value and contrast adjustment data adjusted by the contrast adjustment means, and the next inspection based on the past history data at the time of the current inspection and the previous inspection. When it is determined that the predetermined exchange prediction level is reached by the time, an exchange prediction determination unit is provided that predicts the replacement time when the replacement prediction level is reached and notifies the replacement prediction time.

(4) Furthermore, as described above, as a portable terminal for maintenance, it is necessary to place an order for a light emitting device or a light emitting device display device that is to be replaced or predicted to be replaced when it is determined that it is time to replace or when the replacement time is predicted. The system further includes order processing means for taking out the data and transmitting it to the maintenance service center or the parts center as the ordering party connected to the communication network.

  According to the present invention, it is possible to determine the replacement time of a light emitting device uniformly or efficiently without relying on the feeling and experience of individual maintenance personnel, or to predict the replacement time, and to determine the life of the light emitting device display device Can provide.

  Further, the present invention relates to a lifetime determination device for a light emitting device display device that automatically performs the light emitting device ordering process when the replacement timing of the light emitting device is predicted or when the replacement time is predicted, thereby reducing the burden on maintenance personnel. Can provide.

The block diagram which shows 1st Embodiment of the lifetime determination apparatus of the light emitting device display apparatus which concerns on this invention. The figure explaining the data arrangement example of a parts ordering table. The flowchart explaining an example of processing operation of the maintenance portable terminal in a 1st embodiment. The block diagram which shows 2nd Embodiment of the lifetime determination apparatus of the light emitting device display apparatus which concerns on this invention. The flowchart explaining an example of processing operation of the maintenance portable terminal in a 2nd embodiment. The figure explaining transition of the level change corresponding to the lightness shade value or color temperature value of the actual gray scale by long-term use of LED which comprises a light emitting device display apparatus. The block diagram which shows 3rd Embodiment of the lifetime determination apparatus of the light-emitting device display apparatus which concerns on this invention. The flowchart explaining an example of processing operation of the maintenance portable terminal in a 3rd embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a configuration diagram showing a first embodiment of a lifetime determination device for a light emitting device display device according to the present invention.

  The life determination device for a light emitting device display device includes a light emitting device display device 1 installed at a landing on each floor, a photographing unit 2 that captures a light image emitted from the light emitting device display device 1, and a photographing drive for the photographing unit 2. A maintenance service center 6 and a parts center 7 connected to a photographing operation control unit 3, a maintenance portable terminal 4 such as a general-purpose personal computer equipped with a dedicated maintenance tool, and a communication network 5 such as a telephone communication line, LAN or WAN. It consists of and.

  This life determination device captures and captures a light image emitted from the light emitting device display device 1 by the photographing unit 2, determines the life of an LED (light emitting diode) constituting the light emitting device display device 1, and requires replacement of parts. The system automatically performs order processing.

  As the light emitting device display device 1, for example, a door driving device cover for protecting a landing operation panel 12 attached to a landing door 11 of each floor landing or a wall surface near the landing door 11 and a door driving device (not shown) on the landing door 11. 13 is equivalent to a hall indicator or the like that displays the current floor position of the elevator.

  Such a hall indicator is composed of R (red), G (green), and B (blue) LED (light emitting diode) displays so that the elevator user can easily recognize the current floor position of the elevator. It has a role to display.

  Note that the light emitting device display device 1 is limited to a hall indicator as long as it is composed of R (red), G (green), and B (blue) LED (light emitting diode) displays and displays some state. It is not a thing. For example, it may be composed of R (red), G (green), and B (blue) LEDs (light emitting diodes) installed in the car instead of each floor.

  The photographing unit 2 is already incorporated in the light emitting device display device 1 when the elevator is installed, or the outer cover of the light emitting device display device 1 is removed at the time of periodic inspection or failure, and the light emitting device display device 1 itself or the light emitting device display device. 1 is a small digital camera that is installed at a predetermined distance from 1 and that captures a light image emitted from the light emitting device display device 1.

  The photographing operation control unit 3 is attached integrally or separately from the photographing unit 2 and has a function of sending a signal necessary for the photographing operation to the photographing unit 2 when receiving a photographing start command from the maintenance portable terminal 4. .

  The maintenance portable terminal 4 includes a storage device 21 that is built in the terminal or inserted into the attachment / detachment itself, a life determination processing unit 22, an input unit 23 such as a keyboard and a mouse, and a display unit 24. It is used by connecting to the communication network 5 in a wired or wireless manner as necessary.

  The storage device 21 includes a grayscale data storage area unit 21a for storing the life determination grayscale display data of a predetermined number of stages, a threshold data storage area unit 21b for storing life determination threshold data, and a component ordering table. 21c is provided.

  The grayscale display data for life determination stored in the grayscale data storage area 21a is achromatic image data having only lightness divided so that the ratio of white and black changes in, for example, 12 levels. For example, they are displayed side by side in the left-right direction on the display unit 24 (see the figure (a)).

  The threshold value data storage unit 21b is threshold value data such as a lightness gradation value or a color temperature for determining the lifetime of the LEDs constituting the light emitting device display device 1, and has, for example, 12 levels of lightness values. For example, the three-level level value “3” or the four-level level value “4” from the lower side having the highest black ratio among the gray value or the color temperature value (hereinafter also referred to as the level value) is the life determination threshold value. Set as data.

  As shown in FIG. 2, the part ordering table 21c includes, for example, a building ID related to each elevator installation customer in the maintenance service area, an elevator ID, a part name of each landing floor related to the relevant car, a part quantity, a part center mail address, In addition to the maintenance service center mail address, similar data is stored for the elevator car.

  The life determination processing unit 22 is converted by the gray scale conversion means 22a for converting the light image emitted from the RGB LEDs constituting the light emitting device display device 1 into gray scale, the life determination gray scale display data and the gray scale conversion means 22a. Further, gray scale display means 22b for displaying the actual gray scale, life determination means 22c, and order processing means 22d are provided.

  Next, the operation of the lifetime determination device for the light emitting device display device configured as described above will be described with reference to FIG.

  A maintenance worker goes to the site where the life diagnosis is performed, for example, an elevator installation site with the maintenance portable terminal 4 equipped with the maintenance dedicated tool, and operates an inspection switch related to the elevator installed at the site to set the inspection mode.

  After that, when the outer cover of the light emitting device display device 1 is removed and the photographing unit 2 including, for example, the photographing operation control unit 3 is not installed in the light emitting device display device 1, the light emitting device display device 1 itself or the light emitting device display device. A photographing unit 2 including a photographing operation control unit 3 is installed in the vicinity thereof, and the photographing unit 2 and the photographing operation control unit 3 are further connected to an input / output port (not shown) of the maintenance portable terminal 4. Connect and enter shooting ready state.

  In this state, when a maintenance person inputs an instruction to start shooting from the input unit 23, the life determination processing unit 22 of the maintenance portable terminal 4 determines that there is an instruction to start shooting (S1), and performs drive control via the output port. A command is sent to the photographing operation control unit 3 (S2). Here, the photographing operation control unit 3 sends a photographing operation start command including photographing condition data (for example, photographing voltage / current) to the photographing unit 2 to start photographing.

  Here, the life determination processing unit 22 captures a light image emitted from the light emitting device display device 1 photographed by the photographing unit 2 together with the start of photographing, and stores it in the storage device 21 (S3).

  Subsequently, the life determination processing unit 22 executes the gray scale conversion means 22a. The gray scale conversion means 22a converts the optical image data captured and stored from the photographing unit 2 into, for example, any one of 12 actual gray scales using a maintenance-dedicated tool (S4) and stores it in the storage device 21.

  Thereafter, the life determination processing unit 22 executes the gray scale display means 22b. The gray scale display means 22b reads out, for example, twelve stages of life determination gray scale display data stored in the gray scale data storage area 21a and displays it on the display unit 24 as shown in FIG. The actual gray scale converted by the gray scale converting means 22a is read out and displayed on the lower side of the life determination gray scale display data as shown in FIG.

  Here, the lifetime determination means 22c determines the lifetime of the LED display which comprises the light emitting device display apparatus 1 artificially or automatically (S6).

  Artificially, two types of life determination processing can be considered.

  The first one that is artificially determined is to display only 12 levels of life-determination grayscale display data (A) on the display unit 24, and the maintenance staff, for example, is subordinate to the lifetime determination grayscale display data (A). When it becomes impossible to distinguish the scales of the three or four level values from the side, it is determined that the replacement time is reached.

  The second artificially determined is that the display unit 24 displays 12 levels of life-determining grayscale display data (A) and actual grayscale (B), and the maintenance staff confirms the mutual grayscale. It is determined whether the level value based on the grayscale brightness value or the color temperature value of the grayscale is close to the level value based on the brightness density value or the color temperature value of the twelve stages of gray scale display data for life determination. Here, when the level of the actual gray scale is substantially equal to, for example, the level “3” of the three levels from the lower level of the gray level display data for life determination of the 12 levels, the LED of the LED display is based on the determination instruction input as the lifetime. Is the lifetime (replacement time) (S6), and the display unit 24 is notified that it is the parts replacement time (S7).

  On the other hand, the life is automatically determined as follows. According to the maintenance dedicated tool stored in advance, the threshold data for life determination is read from the threshold data storage unit 21b and compared with the level value of the actual gray scale. When it corresponds to the level value of three or four levels from the lower side of the LED, it is determined that the LED of the LED display is at the end of life (replacement time) (S6), and the display unit 24 is notified that it is the component replacement time ( S7).

  Further, it is determined whether or not there is a confirmation instruction from the input unit 23 (S8). If there is a confirmation instruction, the order processing means 22d is executed.

  The order processing means 22d determines whether or not the order flag is set in advance (S9), and displays the parts order table 21c shown in FIG. 2 on the display unit 24 from the storage device 21 only when it is set. Then, data necessary for ordering (for example, machine ID, landing floor, part name, parts center mail address or maintenance service center mail address) is selected, and the order data is transmitted to the maintenance service center 6 or parts center 7 (S10). .

  If the order data is transmitted to the maintenance service center 6 based on the maintenance service center e-mail address and an order is sent from the maintenance service center 6 to the parts center 7, the light emitting device display of the building is displayed on the maintenance service center 6 side. It is easy to plan the LED replacement work of the device 1.

  Therefore, according to the embodiment as described above, for example, a gray scale for determining a life in 12 stages is stored in advance, and a light image from the LED display constituting the light emitting device display device 1 photographed by the photographing unit 2 is obtained. For example, the actual gray scale is converted into any one of the 12 gray scales and displayed so that the actual gray scale matches the 12 gray scales for life determination, and the actual gray scale level value is the threshold data for life determination. When it is a level value corresponding to a predetermined stage determined in advance from the lower side of the LED, it is determined that the LED constituting the light emitting device display device 1 is at the end of its life, so that it is not necessary to rely on the feeling and experience of individual maintenance personnel. The replacement time can be determined uniformly and work efficiency can be improved.

  Further, when the maintenance portable terminal 4 determines that it is time to replace the LED constituting the light emitting device display device 1, the maintenance portable terminal 4 sends the maintenance service center 6 to the maintenance service center 6 based on the maintenance service center mail address. By transmitting the order data and placing an order from the maintenance service center 6 to the parts center 7, it becomes easier for the maintenance service center 6 to create a plan for replacing the LED of the light emitting device display device 1 regarding the elevator of the corresponding building. .

(Modification in the first embodiment)
In the said embodiment, when it determines with LED which comprises the light-emitting device display apparatus 1 installed in a specific landing floor (for example, 1st floor) having reached the replacement time, it is the same period and other types using LED of the same kind Similarly, the light-emitting device display device 1 on the landing floor may be notified that it is time to replace the LED constituting the light-emitting device display device 1, and prompt the user to replace the LED.

  Thereby, also in a high-rise building, the LED life (replacement) determination work of the light-emitting device display device 1 of each landing floor and the LED replacement work of each light-emitting device display device 1 of the entire building can be smoothly advanced.

  In addition, as ordering data at this time, it orders with the total quantity which added the quantity of LED used for each light-emitting device display apparatus 1 installed in a some hall | floor floor.

(Second Embodiment)
FIG. 4 is a block diagram showing a second embodiment of the lifetime determining device for a light emitting device display device according to the present invention. In this figure, the same parts as those in FIG. 1 are denoted by the same reference numerals, and the description of the overlapping parts is omitted.

  As in the first embodiment, the light-emitting device display device lifetime determination device includes a light-emitting device display device 1 and R (red), G (green), and B (blue) LEDs that constitute the display device 1. An elevator control device 8 having a contrast adjustment function 8a for adjusting the contrast of light emitted from the (light emitting diode), the photographing unit 2, the photographing operation control unit 3, and an input port connected to the contrast adjustment function 8a of the elevator control device 8 Or, it is configured with a maintenance portable terminal 4 such as a general-purpose personal computer that is connected to an internal input interface and transmits a contrast adjustment signal. As the light emitting device display device 1 is used, R (red), G (green) and B (blue) LED (light emitting diode) displays are adjusted to compensate for the decrease in contrast. The results of the light emitting device display device 1 that is installed in the other landing floor is intended to apply as well.

  The second embodiment has substantially the same configuration as that of the first embodiment except for the configuration related to contrast adjustment.

  That is, the maintenance portable terminal 4 is connected to an input port or an internal input interface (not shown) connected to the contrast adjustment function 8a of the elevator control device 8, and a contrast adjustment signal is sent from the maintenance portable terminal 4 to the contrast adjustment function 8a. The contrast of the LED display constituting the light emitting device display device 1 is adjusted.

  As the life determination processing unit 22 of the maintenance portable terminal 4, in addition to the gray scale conversion means 22a, the gray scale display means 22b, and the life determination means 22, a contrast adjustment means 22e is newly provided.

  Similarly to the first embodiment, the storage device 21 stores a grayscale data storage area unit 21a for storing grayscale display data for life determination at a predetermined stage and threshold data for life determination. In addition to the threshold data storage area 21b, a contrast adjustment table 21d is newly provided.

  In the second embodiment, a contrast increase / decrease adjustment instruction signal is input from the input unit 23, or a contrast adjustment icon 24a is displayed on the display unit 24 in advance, and the icon 24a is clicked to increase or decrease the contrast. The signal can be input.

  Further, a contrast adjustment function 8a (for example, a combination of a voltage conversion device and a digital potentiometer of Patent Document 1) of the elevator control device 8 is provided, and the digital control is performed according to a contrast increase / decrease adjustment signal sent from the maintenance portable terminal 4. The potentiometer is varied to generate a signal for changing the contrast of the LED of the light emitting device display device 1 and sent to the light emitting device display device 1 through a tail code or other appropriate signal line.

  Next, the operation of the lifetime determination device for the light emitting device display device configured as described above will be described with reference to FIG.

  The life determination processing unit 22 of the maintenance portable terminal 4 performs the same processes as steps S1 to S10 shown in FIG. 2, but here, the description of the processes of steps S1 to S10 is omitted, and the life determination means 22c. An example of processing when it is determined that it is not the part replacement time will be described.

  That is, the life determination means 22c compares the 12-stage life determination gray scale with the actual gray scale, and the actual gray scale level value is 3 levels (level value “ 3 ") to 4 steps (level value" 4 "), it is determined whether or not the replacement time of the LED has been reached (S6).

  Here, when it is determined that the replacement time has not been reached, the contrast adjusting means 22e is executed.

  For example, the contrast adjusting unit 22e compares the actual gray scale level value converted by the gray scale converting unit 22a at the previous inspection and stored in the storage device 21 with the current actual gray scale level value. When it is determined that the predetermined level is lower than the previous level, it is determined that contrast adjustment is necessary (S11).

  Therefore, the maintenance staff operates the contrast adjustment icon 24a on the input unit 23 or the display unit 24 of the maintenance portable terminal 4 as shown in FIG. 4, and the contrast adjustment function 8a of the elevator control device 8 is operated from the maintenance portable terminal 4. A contrast increase adjustment signal is sent to (S12).

  At this time, the life determination processing unit 22 of the maintenance portable terminal 4 stores the contrast adjustment result in the contrast adjustment table 21d formed in the storage device 21 (S13). That is, in the contrast adjustment table 21d, the adjustment date, current gray scale level value, and (c) in FIG. 6 are associated with the light emitting device display device 1 on a specific landing floor (for example, the first floor). The adjusted level value and the adjusted level value are stored and accumulated for several decades as shown in FIG.

  Therefore, according to the embodiment as described above, the contrast of the light-emitting device display device 1 is lowered to a predetermined level or more when the replacement time has not yet been reached as the light emitting device display device 1 has been used. Since the contrast increase adjustment signal is sent from the maintenance portable terminal 4 and the contrast is adjusted so as to increase the contrast of the light emitting device display device 1 via the elevator control device 8, the elevator user, for example, You can make sure that you are on the landing floor.

(Modification in the second embodiment)
(1) In the above embodiment, the maintenance portable terminal 4 provided with the contrast adjusting means 22e is connected to the elevator control device 8, and the light emitting device display device 1 is connected to the elevator control device 8 from the maintenance portable terminal 4 via the elevator control device 8. The contrast is adjusted. For example, the maintenance portable terminal 4 is connected to a terminal on the car operation panel in the car capable of adjusting the contrast, and a contrast increase adjustment signal is sent from the maintenance portable terminal 4 to the elevator as described above. The contrast of the light emitting device display device 1 on the landing side as well as in the car can be easily adjusted.

(2) In the above embodiment, the contrast adjustment of the light emitting device display device 1 relating to a specific landing floor (for example, the first floor) has been described, but it is installed on another floor using the same time and the same type of LED. The present invention can also be applied to the light emitting device display device 1, and the contrast of the similar light emitting device display device 1 can be adjusted with the adjustment level value shown in FIG.

  Thereby, even in a high-rise building, the contrast adjustment work can be efficiently advanced for the light-emitting device display devices 1 on all the landing floors.

(Third embodiment)
FIG. 7 is a configuration diagram showing a third embodiment of the lifetime determination apparatus for the light emitting device display device according to the present invention. In this figure, the same parts as those in FIGS. 1 and 4 are denoted by the same reference numerals, and the description of the overlapping parts is omitted.

  In addition to the gray scale conversion means 22a, the gray scale display means 22b, the life determination means 22c, and the contrast adjustment means 22e, the replacement prediction determination means 22f is newly provided as the life determination processing section 22 of the maintenance portable terminal 4.

  Further, as in the second embodiment, the storage device 21 is provided with a gray scale data storage area unit 21a, a threshold data storage area unit 21b, and a contrast adjustment table 21d.

  Therefore, in the contrast adjustment table 21d of the storage device 21, the level change data of the contrast adjustment result shown in FIG. 5 relating to the light emitting device display device 1 on the specific floor or all the landing floors over a long period of time as described above. Is accumulated.

  Therefore, the maintenance portable terminal 4 uses the level change data of the contrast adjustment result stored in the contrast adjustment table 21d to predict the replacement time of the LEDs constituting the light emitting device display device 1.

  Next, the operation of the lifetime determination device for the light emitting device display device configured as described above will be described with reference to FIG.

The life determination processing unit 22 of the maintenance portable terminal 4 performs the same processing as Steps S1 to S13 shown in FIG. 5, but here the description of the processing of Steps S1 to S13 is omitted.
A series of processes of the newly added replacement prediction determination unit 22f will be described.

  The life determination processing unit 22c of the life determination processing unit 22 compares the actual gray scale with the 12 levels of life determination gray scale, and the three levels of the life determination gray scale whose level value of the actual gray scale is 12 levels. Alternatively, it is determined whether or not four levels have been reached, that is, whether or not the LEDs constituting the light emitting device display device 1 have reached the replacement time (S6). Here, when it is determined that the level value of the actual gray scale has not reached the replacement time, the replacement prediction determination means 22f is executed. Based on the level change data (the past history data up to the time of the previous inspection) stored in the contrast adjustment table 21d, the replacement prediction judging means 22f replaces the prediction level (shown in FIG. 6) until the next inspection. It is determined whether or not the lower predetermined level is reached (S21).

  If the replacement prediction level (lower predetermined level) is not reached by the next inspection, the contrast adjusting means 22e described in the second embodiment is executed. From FIG. When it is determined that the replacement prediction level will be reached by the time of the next inspection based on past historical data until the time, it is determined that the current position of the elevator cannot be clearly displayed even if the contrast is further increased. The replacement time reaching the level is predicted (S22), and the replacement prediction time is displayed on the display unit 24 (S23). Thereafter, it is determined whether or not there is a confirmation instruction from the input unit 23 (S24), and if there is a confirmation instruction, the process ends.

  Therefore, according to the embodiment as described above, when it is determined that the replacement predicted level is reached by the next inspection based on the level change data (history data) of the past contrast adjustment results up to the previous inspection, the elevator Since it is determined that the current position of the unit cannot be clearly displayed and the replacement prediction time is notified, the maintenance staff can know in advance that the LEDs constituting the light-emitting device display device 1 will reach the end of their life soon, and promptly Necessary measures can be taken.

(Modification in the third embodiment)
(1) In the above embodiment, when it is determined that the replacement prediction level will be reached by the next inspection, the replacement prediction time is notified. For example, in the first embodiment, steps S9 and S10 in FIG. As described above, the ordering data may be transmitted to the maintenance service center 6 or the parts center 7 after notifying the predicted replacement time.

(2) In addition, when the predicted replacement time regarding the LEDs constituting the light emitting device display device 1 on a certain landing floor is notified, the light emitting device display installed on the other floor using the same time and the same type of LED Similarly, the apparatus 1 may determine that the replacement prediction level will be reached by the next inspection, and proceed with LED replacement work and order processing.

(Other embodiments)
(1) In the above embodiment, the 12-step grayscale display data is displayed so as to be arranged in the left-right direction, but may be displayed so as to be arranged in the vertical direction, for example.

(2) In the above embodiment, the gray scale display data having twelve levels has been described. However, for example, gray scale display data having ten levels may be used.

(3) Moreover, in the said embodiment, when alert | reporting the replacement time regarding the LED which comprises the light emitting device display apparatus 1 of a specific hall | floor, or the prediction time of replacement | exchange, the same period corresponding to the same elevator number, and the same kind of LED The replacement time or the predicted replacement time is also applied to the light emitting device display devices 1 installed on other landing floors that use the, but when the order data is transmitted from the maintenance portable terminal 4 to the maintenance service center 6, for example, The service center 6 applies the replacement time or the predicted replacement time to the LEDs that constitute the light emitting device display device of each landing floor that uses the same kind of LEDs and the same period corresponding to each elevator in the same building in advance. be able to.

(4) Although the LED (light emitting diode) is used as the light emitting device constituting the elevator display device 1, for example, an organic EL may be used.

  In addition, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.

  DESCRIPTION OF SYMBOLS 1 ... Light emitting device display apparatus, 2 ... Image pick-up part, 3 ... Image pick-up operation control part, 4 ... Maintenance portable terminal, 5 ... Communication network, 6 ... Maintenance service center, 7 ... Parts center, 8 ... Control apparatus, 21 ... Memory | storage Device 21a ... Grayscale data storage area unit 21b ... Threshold data storage area unit 21c ... Part order table 21d ... Contrast adjustment table 22 ... Life determination processing unit 22a ... Grayscale conversion means 22b ... Gray Scale display means, 22c ... life judgment means, 22d ... order processing means, 22e ... contrast adjustment means, 22f ... exchange prediction judgment means, 23 ... input section, 24 ... display section.

Claims (7)

The light emitting device display device installed at each floor of the elevator or attached in the vicinity of the light emitting device display device, the photographing means for photographing the light image emitted from the light emitting device display device, and the photographing means It is composed of a portable terminal for maintenance that determines the life of a light emitting device that constitutes the light emitting device display device by capturing an optical image,
This maintenance mobile device
Data storage means for storing a predetermined number of steps of grayscale display data and life threshold data;
A gray scale conversion means for capturing the light image captured by the imaging means and converting it into a predetermined number of gray scales;
A grayscale display means for displaying a predetermined number of grayscale display data stored in the data storage means and the actual grayscale converted by the grayscale conversion means;
When the actual grayscale receives an instruction that the predetermined predetermined stage of the grayscale display data cannot be recognized, or when the actual grayscale reaches the lifetime determination threshold data, the light emitting device has a lifetime A lifetime determining device for a light emitting device display device, comprising: lifetime determining means for determining that the light emitting device has been reached and notifying the replacement of the light emitting device. In the lifetime determination apparatus of the light-emitting device display device according to claim 1,
When it is determined that the light emitting device constituting the light emitting device display device of a specific landing floor corresponding to the elevator has reached the end of its life, the life determining means is the same type and the same of the other landing floor corresponding to the elevator. A life-determining device for a light-emitting device display device, which also notifies the replacement of the light-emitting devices constituting the light-emitting device display device installed at the time. In the lifetime determination apparatus of the light-emitting device display device according to claim 1,
The maintenance portable terminal has an ordering table for storing data necessary for ordering the light emitting device or the light emitting device display device, and a replacement target when the life determining means determines that the light emitting device has reached the end of its life. An ordering processing unit is added, which extracts data necessary for ordering regarding the light emitting device or the light emitting device display device and transmits the data to a maintenance service center or a parts center as an ordering party connected to a communication network. Lifetime judgment device for light emitting device display device. In the lifetime determination apparatus of the light-emitting device display device according to claim 1,
When the maintenance portable terminal determines that the light emitting device has not reached the lifetime by the lifetime determination means, the actual grayscale level value converted by the grayscale conversion means at the previous inspection and the actual value at the current inspection. Compared with the level value of the gray scale, when the current level value is lower than a predetermined level more than the previous time, a contrast increase adjustment signal is sent to the corresponding light emitting device display device via the elevator control device, and the light emitting device display device An apparatus for determining the lifetime of a light emitting device display device, characterized in that a contrast adjusting means for adjusting the contrast of an optical image emitted from a light source is added. In the lifetime determination apparatus of the light-emitting device display device according to claim 4,
The maintenance portable terminal accumulates and stores past history data such as an actual grayscale level value converted by the grayscale conversion means and contrast adjustment data adjusted by the contrast adjustment means for each inspection. Based on the storage means and past history data at the time of the current inspection and the previous inspection, when it is determined that the predetermined replacement prediction level will be reached by the next inspection, the replacement time to reach the replacement prediction level is predicted and replaced. A life-determining device for a light-emitting device display device, characterized in that an exchange prediction-determining means for informing a prediction time is added. In the lifetime determination apparatus of the light-emitting device display device according to claim 5,
The replacement prediction judging means, when notifying the replacement prediction time for the light emitting device constituting the light emitting device display device of the specific landing floor corresponding to the elevator, the same kind and the same of the other landing floor corresponding to the elevator A lifetime determination apparatus for a light-emitting device display device, wherein the same replacement prediction time is also notified for light-emitting devices constituting the light-emitting device display device installed at the time. In the lifetime determination apparatus of the light-emitting device display device according to claim 5,
When the portable terminal for maintenance predicts the replacement time for the light emitting device with the ordering table storing data necessary for ordering the light emitting device or the light emitting device display device, and the replacement prediction determining means, the replacement prediction target Ordering processing means for adding data required for ordering regarding the light emitting device or the light emitting device display device to be taken and transmitting it to a maintenance service center or a parts center as an ordering destination connected to a communication network is added. Lifetime determination device for light emitting device display device.

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