JPH08239177A - Elevator position indicator - Google Patents

Abstract

PURPOSE: To prevent images from burning in on a display panel even at the time of displaying the same floor for a long time. CONSTITUTION: While a car is being stopped, a display time measuring means 8 outputs a display color switch signal each time a predetermined period of time has elapsed. Each time the signal is output, a display color setting means 6 designates a different display color from a plurality of display colors. A display control means 5, when the car is being stopped, displays the floor on a display panel 3 in the display color designated by the display color setting means 6. Therefore when the same floor is displayed for a long time, the display color is automatically changed so that the image can be prevented from burning in on the display panel 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator position display device for displaying the position of an elevator car.

[0002]

2. Description of the Related Art In recent years, a display device using a display panel has come to be widely used in transportation facilities and the like, and an elevator position display device displays it in order to improve service to users. The panel is being used. This elevator position display device is installed in a car and is used as a device for displaying information to the user, the position of the elevator, or the ascending / descending direction of the car. The elevator user can know the operation status of the elevator by this position display device and can confirm that he is heading to his or her destination floor. In general, an elevator user has a strong tendency to watch the progress until the arrival at the destination floor, so that the display of the position display device is highly noticed by the user.

Therefore, recently, instead of the display panel using the incandescent lamp, the position display device of the display panel using the semiconductor light emitting element has been widely used. In a display panel using this semiconductor light emitting element, a large number of semiconductor light emitting elements are arranged in a matrix to form a display matrix composed of a large number of display dots, and the floors are numerically displayed by blinking the display dots on the display matrix. To do. Also,
It also uses multi-color display that can display multiple colors. For example, by using red and green semiconductor light emitting elements, both red and green when they are lit independently, both are lit to display orange, or both are turned off to display black. . This meets the needs of elevator users.

Here, the elevator stands by at the standard floor when there is no user. Generally, you are waiting on the first floor. In this case, the position display device of the elevator continues to display the current waiting floor until the user occurs. Further, the ascending / descending direction is displayed only when the elevator is moving, and is not displayed when the elevator is stopped. Therefore, while the elevator is on standby, the position display device continues to display the waiting floor until a user occurs.

Therefore, when the display panel is composed of an incandescent lamp, in order to reduce the power consumption and the life of the incandescent lamp,
For example, Japanese Utility Model Publication 57-18566 and Japanese Utility Model Publication 58-
As shown in Japanese Patent No. 176856, when the waiting time of the elevator is longer than a certain time, the power supply to the incandescent lamp is reduced. This prevents the incandescent lamp from wastefully consuming power and extends the life of the incandescent lamp.

[0006]

However, in the case where the display panel is composed of semiconductor light emitting devices, the power supply to the semiconductor light emitting devices is simply reduced when the waiting time of the elevator is longer than a certain time. By itself, certain display dots on the display matrix in the display panel may cause burn-in.

That is, when the display panel is composed of semiconductor light emitting elements, not only the problems such as reduction of power consumption and extension of life of the semiconductor light emitting elements, but also specific display dots on the display matrix in the display panel are provided. Has a problem that it causes burning.

When the display dots are burned in, variations in brightness occur in the display matrix, causing unevenness in color. For example, when red is displayed for a long time, the brightness of red decreases when displaying orange, resulting in a display color close to yellow. Therefore, not only is the user looking at the position display device uncomfortable, but the life of the display panel is shortened.

An object of the present invention is to provide an elevator position display device capable of preventing the display panel from being burned even when the display of the same floor is displayed for a long time.

[0010]

According to a first aspect of the present invention, there is provided an elevator position display device for outputting a display color switching signal each time a predetermined time has elapsed when a car is in a stopped state. The display time measuring means, the display color setting means for designating the display color during operation of the car, and the display color setting means for designating a different display color from the plurality of display colors each time the switching signal is output, Display control means for displaying the floor on which the car is located and displaying the floor on the display panel in the display color designated by the display color setting means when the car is in a stopped state.

According to a second aspect of the present invention, the display color switching signal in the display time measuring means according to the first aspect is output when the condition that the elevator is normal and the door is closed is additionally satisfied. It is the one.

According to a third aspect of the present invention, the display colors of the display color setting means according to the first aspect are red, orange and green.

[0013]

When the car is in a stopped state, the display time measuring means outputs the display color switching signal every time a predetermined time elapses. Each time this switching signal is output, the display color setting means specifies a different display color from the plurality of display colors. The display control means displays the floor on the display panel in the display color designated by the display color setting means when the car is in a stopped state. Therefore, when the same floor is displayed for a long time, the display color is automatically changed, so that the display panel can be prevented from being burned.

If a condition that the elevator is normal and the door is closed is added as a condition of the display color switching signal in the display time measuring means, the display color is unnecessarily changed during the failure of the elevator. Will not be lost.

When a red light emitting element and a green light emitting element are used as the light emitting elements of the display panel, a plurality of display colors in the display color setting means are red or green when they are made to emit light independently, and both are displayed. When it emits light, it turns orange.

[0016]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram of an elevator position display device according to the present invention.

The elevator single controller 1 controls the operation of the elevator, and controls the lifting operation of the elevator car. To the position display device 2, the elevator operation signal, that is, the position of the car and the moving direction thereof are input from the elevator single control device 1. The position display device 2 displays the current position of the car and the current moving direction on the display panel 3 based on the operation signal of the elevator.

That is, in the position display device 2, the position and the moving direction of the car sent from the elevator single control device 1 are periodically input by the signal input means 4, and the position and the moving direction of the input car are input. Is input to the display control means 5. The display control means 5 displays the floor and the moving direction of the car on the display panel 3. When the car is in a stopped state, the floor where the car is located is displayed, but the car The moving direction of is not displayed. Further, the floor is displayed on the display panel 3 in the display color designated by the display color setting means 6.

Here, the display time measuring means 7 outputs a display color switching signal each time a predetermined time elapses when the car is in a stopped state. The display color during the operation of the car is designated, and a different display color is designated from among the plurality of display colors each time the switching signal is output from the display time measuring means 7.

The display control means 5 creates display data of the floor and the moving direction of the car based on the display color signal and the display color switching signal from the display color setting means 6 and the display time measuring means 7. The display data is displayed on the display panel via the display output means 8. In this case, the display time measuring means 8 measures the time from the moment when the display data is transmitted from the display output means 7 to the display panel 3 until the next display data is transmitted, and the predetermined time elapses. A display color switching signal is output every time.
Further, the predetermined time is assumed to be a time when there is no elevator user, for example, 3 minutes.

Next, FIG. 2 is an explanatory view of the display panel 3. A large number of light emitting elements 9 are arranged in a matrix on the display panel 3 to form a display matrix composed of a large number of display dots. The floor on which the elevator car is located is displayed numerically by blinking display dots on the display matrix. A light emitting diode LED or a color liquid crystal panel is used as the light emitting element. In FIG. 2, the normal operation is shown, and the upward movement from the first floor is shown. Further, a red light emitting element and a green light emitting element are used for one display dot. Therefore, when it emits light independently, it becomes red or green, and when both emit light, it becomes orange. In this embodiment, in the normal operation state, the position of the car is displayed in red, and when the waiting time of the elevator exceeds a predetermined time, that is, 3 minutes, as shown in FIG. ,red,
Circulate orange and green and replace. The designation of the display color is set in the display color setting means 6.

That is, the display time measuring means 8 measures the elapsed time from when the display of the position of the car is updated on the display panel 3 and outputs the next display data within a predetermined time, that is, within 3 minutes. If not, a display color switching signal is output to the display control means 5. This allows
The display control means 5 displays the orange color which is the display color set in the display color setting means 6. That is, the display color is changed from red to orange.

The display time measuring means 8 further measures the elapsed time since the display color changed to orange. Then, when the next display data is not output within a predetermined time, that is, within 3 minutes, a display color switching signal is output to the display control means 5. As a result, the display control means 5 changes the display color from orange to green and performs the display. Further, when the standby state has elapsed for a predetermined time, that is, 3 minutes, the display color is changed to the original red color, the display is performed, and the operation is repeated thereafter.

Next, FIG. 4 is a flow chart showing the operation of the position display device of the present invention. FIG. 4 shows a case where the standard floor is the first floor in a building with three floors and the display colors are three colors.

It is assumed that the elevator user gets into the car and presses the button on the floor of the destination. The elevator starts its service towards the floor where the button is pressed.
When the elevator operates, the elevator single control device 1 inputs the position and moving direction of the car to the signal input means 4 of the position display device 2. The display control means 5 determines whether or not the position of the car has periodically changed based on the position and the moving direction of the car input from the signal input means 4 (S1).

When the position of the car changes, the display color setting data stored in the display color setting means 6 is initialized (S2). This display color setting data is for setting the display color of the display panel 3 as shown in FIG. 5, and is composed of a matrix of floor i and display color selection n. To initialize such display color data, first,
The floor i is reset and the display color selection n is set to n = 1. If the position of the car is on the first floor, i is set to i = 1 (S3). If the car is on the second floor, i is set to i = 2 (S4). If it is on the third floor, i is set to i = 3. Do (S
5). As a result, both the floor i and the display color selection n are set (S6). For example, if the current floor is the 1st floor, the 1st floor (i = 1), the data for red display (n =
1) will be set.

Next, the current time is set in TIME (S
7) The contents of the set display color setting data (i, n) are displayed on the display panel 3 (S8). In this state, it is again determined whether the position of the car has changed (S
9) If the position of the car is fluctuating, the process is temporarily terminated, and the process in the next cycle is restarted from step S1.

On the other hand, when there is no change in the position of the car, the time difference t between the current time and the time set in TIME
Is calculated (S10). This time difference t is compared with a predetermined time in the display time measuring means 8 (S11), and when this time difference t is smaller than the predetermined time, that is, 3 minutes indicating a long waiting time, the process returns to step S9 and the car It is determined whether or not there is a change in the position of. Time difference t
If is 3 minutes or more, 1 is added to the display color selection n (S12). Since this embodiment shows the case where the display colors are three colors, it is judged whether or not the display color selection n is within 3 (S13), and if the display color selection n is within 3, a step is performed. The process returns to S6, and the display color setting data (1, 2) is displayed in orange. Similarly,
Further, when there is no change in the position of the car, the contents of the display color setting data (1, 3) are displayed in green.

When the determination in step S13 is n ≧ 4, the display color selection n is returned to the initial value n = 1 (S1).
4) and returns to step S6. Therefore, when the car is on standby for a long time, the display panel 3 first displays in red, then orange, and then green, and the display color is sequentially changed, and when the standby time is further exceeded, It will return to red and this will be repeated in order.

As described above, the display color of the floor display while waiting on the first floor is automatically switched every 3 minutes set in the display time measuring means 8, so that the display element 9 can be prevented from being burned. it can. This eliminates the variation in the brightness of the display elements, so that the performance can be improved.

In the above description, the display color is changed when the waiting time of the car exceeds a predetermined time in the display color measuring means 8. However, in addition to the condition, the elevator You may add the condition that it is normal and the door is closed. In this case, erroneous display and the display color will not be changed during failure.

[0032]

As described above, according to the present invention, while the elevator is on standby, the display color of the floor of the display panel is changed when the standby time has passed a preset time, so that it can be used for a long time. It is possible to prevent burning due to lighting of certain display dots. Further, it is possible to eliminate variations in brightness. As a result, the performance can be improved and the service to the user can be improved.

There is also a method of displaying a meaningless pattern to prevent the display panel from being burned. However, in the present invention, since it is displayed as a meaningful content at the time of the display of burning prevention, it is possible to use the elevator. Even if a person is on board, it does not cause confusion.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a position display device of the present invention.

FIG. 2 is an explanatory diagram of a display panel of the present invention.

FIG. 3 is an explanatory view of changing display colors according to the present invention.

FIG. 4 is a flowchart showing the operation of the position display device of the present invention.

FIG. 5 is an explanatory diagram of display color setting data stored in display color setting means of the present invention.

[Explanation of symbols]

 1 Elevator Single Unit Control Device 2 Position Display Device 3 Display Panel 4 Signal Input Means 5 Display Control Means 6 Display Color Setting Means 7 Display Output Means 8 Display Time Measuring Means 9 Display Elements

Claims (3)

[Claims] 1. A floor on which an elevator car is located by arranging a large number of light-emitting elements in a matrix on a display panel to form a display matrix composed of a large number of display dots, and blinking the display dots on the display matrix. In an elevator position display device for numerically displaying the floor in a plurality of display colors, display time measuring means for outputting a display color switching signal each time a predetermined time has elapsed when the car is in a stopped state. And a display color setting means for designating a display color during operation of the car and a different display color from the plurality of display colors each time the switching signal is output, and the display panel. The floor where the car is located is displayed, and when the car is stopped, the floor is displayed in the display color specified by the display color setting means. A position display device for an elevator, comprising: display control means for displaying on a display panel. 2. The display color switching signal in the display time measuring means is output when the condition that the elevator is normal and the door is closed is additionally satisfied. The position display device for an elevator according to Item 1. 3. The elevator position display device according to claim 1, wherein the plurality of display colors of the display color setting means are red, orange and green.