JPS5911504B2 - Elevator position display device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for displaying the position of an elevator car.

Elevators are usually provided with position indicators inside the car and at each floor landing in order to inform users of the car position.

The position indicator is an electric lighting type that includes a display board with the floor name written for each floor and a light bulb, which are attached to the board or board in the order of the floor name, and the light bulbs are turned on in accordance with the car position. things are widely used.

In addition, digital electric lighting systems in which numbers are formed by combining light-emitting elements such as discharge tubes, liquid crystals, and light-emitting diodes have recently come into use.

These conventional electrically lit elevator position indicators are always lit regardless of the presence or absence of passengers, except when there is a failure or when the control power to the elevator is cut off to put it into a dormant state.

However, the lighting time of each floor number on the position indicator is not equal.

For example, the first floor is the entrance floor of the building, and the car stops for a longer time than other floors, so the position indicator on each floor is
The lifespan of floor indicator lights is shorter than other lights.

Therefore, the frequency of replacing the indicator light increases, and maintenance work becomes labor-intensive.

In particular, in the case of a combination of digital electric lighting type segments, there are some cases in which the lighting time of the = segment is extremely long compared to the others, which poses a serious problem in the lifespan of the segments.

SUMMARY OF THE INVENTION The object of the present invention is to improve the above-mentioned drawbacks and to provide an electrically lit elevator position display device that has a longer lifespan than conventional ones.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

For the sake of explanation, the number of floors the elevator stops at is 4, but
The present invention is not limited to this, and may be applied to any number of stops.

In the figure, 1 to 4 are hall position indicators installed at the landings on the 1st to 4th floors, 5 is a car position indicator installed inside the car, 1
A to 4a and 5a are light bulbs that display the first floor of position indicators 1 to 5 groups, 1a is a light bulb installed on the first floor, 2a is a light bulb installed on the second floor, and 5a is installed in the car. It's a light bulb.

Similarly, 1b-5b, 1c-5c, 1d-5d are on the 1st floor
Light bulbs for displaying the respective floors of the 4th floor landing position indicators 1-4 and the car position indicator 5; 6-9 are car position contacts that close when the car is on the 1st-4th floor, respectively; 10b-
10d is a normally open contact of the down-hall call registration relay (not shown) on the 2nd to 4th floors, 11a-11c is a normally-open contact of the up-hall call registration relay (not shown) on the 1st to 3rd floor, 12a-1
2d is a car call registration relay for the 1st to 4th floors (not shown)
13 is a call detection relay, 13a is a normally open contact, and 14 is a time-return type time relay that operates immediately when energized and returns after a certain period of time (for example, 30 seconds) when de-energized. , 14a is its normally open contact, 15 is an AC power supply, (
+)H is a DC power supply.

Assume that while the car is running up near the second floor, a passenger presses the destination button for the third floor in the car to register a car call for the third floor.

When the car approaches the third floor, the car position contact 8 on the third floor closes.

At this time, since the car call on the third floor is still registered, the contact 12c is closed.

Therefore, the call detection relay 13 is energized and contacts 13a
is closed, the time relay 14 is energized, and the contact 14a is closed.

Therefore, the light bulbs 1c to 5c indicating the third floor on the position indicator are lit.

When the car arrives at the third floor, the car call registration for the third floor is canceled by an elevator call management circuit (not shown), and the contact 12c is opened.

At this time, if there are no other car calls or hall calls, the call detection relay 13 is deenergized, the contact 13a is opened, and the time limit relay 14 starts timing.

If a hall call or a car call occurs while the time relay 14 is measuring time, the call detection relay 13 is energized again, the time relay 14 resets the time measurement and continues to operate, the contact 14a remains closed, and the light bulb 10 ~5c continues to light up.

If no hall call or car call occurs while the time relay 14 is timing, the contact 14a opens after a certain period of time and all the light bulbs 1c to 5c are turned off.

In this way, when there are no passengers using the elevator, the lifespan of the position indicators 1 to 5 can be extended by turning off the lights.

Note that the lifespan of a light bulb is not only affected by the lighting time (but also by the frequency of blinking, so when there are no passengers in the elevator,
If a passenger arrives after a very short period of time, it is desirable to keep the position indicators 1 to 5 lit in order to extend the life of the light bulb.

This is why the time relay 14 is used to turn off the light after a certain period of time after the call is released.

The time limit setting value of the time limit relay 14 is selected to be an optimal value depending on the type of light bulb, the purpose of the elevator, and the purpose and size of the building in which it is installed.

The life of a light bulb can also be extended by lowering the applied voltage.

FIG. 3 shows an example of this, in which a resistor 16 is connected in parallel to the contact 14a.
When the contact 14a is opened, the voltage applied to the light bulb is lowered and the light bulb is turned on dimly.

Also, as shown in FIG. 4, a rectifier 17 is connected in parallel to the contact 14a.
When the contact 14a is opened, the alternating current may be half-wave rectified to dim the light.

FIG. 5 also shows another embodiment of the invention, and is an alternative to FIG. 2.

That is, the position indicators 1 to 5 and the lighting circuit are as shown in FIG.

In the figure, 18 is a normally open contact of a running detection relay (not shown) that is energized when the car is running, and 19 is a normally open contact of a door control relay (not shown) that is energized when the car door is opened/closed.

While the car is running or the door is opening/closing, the contact 18 or 19 is closed, the time relay 14 is energized, and the contact 14a is closed.
is closed and the position indicators 1 to 5 are energized and lit.

When the car stops and the door opens and closes, contact 18
, 19 are opened, and the time relay 14 starts timing.

During timing, an elevator user occurs and the door opens and closes, but when the car starts, 18 and 19 are closed and the time relay 14 continues to be energized, so the contact 14a remains closed and the position Indicators 1 to 5 continue to light up.

If no passenger is present while the time relay 14 is measuring time, the contact 14a is opened after a certain period of time and the position indicators 1 to 5 are turned off.

It goes without saying that a resistor 16, a rectifier 11, etc. may be connected in parallel to the contact 14a so that the light is dimly lit when no elevator users are present.

FIG. 6 also shows an embodiment of the invention, except that the contact 20 of the watch is connected in parallel to the contact 14a of FIG. 1.
and exactly the same as in FIG.

That is, in FIG. 6, reference numeral 20 indicates a contact point of a clock that is opened only during a preset time period.

By adding the clock contact 20, the position indicators 1 to 5 can be turned off only during a preset time period, for example at night, when there is no call, similar to the embodiments shown in Figs. 1 and 2. be able to.

In elevators for office buildings, where the frequency of use is significantly different between day and night, position indicators 1 to 5 are installed when there are no passengers.
By limiting the time when light bulbs are turned off only to times when light bulbs are not used frequently, it is possible to reduce the factor that shortens the life of light bulbs due to flickering, and to extend the life of light bulbs.

Note that the contact 20 of the watch described above may be used in the embodiment shown in FIG.

Further, the contact 20 may be used by being connected in parallel to the contact 14a in FIGS. 3 and 4.

Furthermore, if a contact that opens when traffic is quiet is used instead of the clock contact 200, the position indicators 1 to 5 can be turned off when there are few passengers.

Furthermore, the present invention will be even more effective if applied to a digital electrically lit position indicator in which floor numeral segments are formed using discharge tubes or light emitting elements.

As mentioned above, in these position indicators, due to their structure, the lighting frequency and lighting time of discharge tubes or light emitting elements corresponding to some segments are indicated by one light bulb for one floor. This is because it is longer than the position indicator.

As explained above, in this invention, after a predetermined period of time after the call is released during off-peak hours, all the lighting elements of the position indicators on each floor landing are turned off or dimly lit.
The life of the display lighting element can be extended without causing inconvenience to many users, and the effort required for managing and maintaining the elevator can be reduced.

[Brief explanation of the drawing]

1 and 2 are circuit diagrams showing one embodiment of an elevator position indicator according to the present invention, and FIGS. 3 to 6 are main circuit diagrams showing other embodiments of the present invention. 1 to 4... Hall position indicators on the 1st to 4th floors, 5.
...Car position indicator, 1a to 5a, lb to 5b
. 1c to 5c, 1d to 5d... Signal indicator light bulb, 6 to 9... Car position contact for 1st to 4th floors, 10
b to 10d...2nd to 4th floor landing call registration relay contacts, 11a to 11c...1st to 3rd floor landing call registration relay contacts, 12a to 12d...・
・・Car call registration relay contact for 1st to 5th floors, 13...
... Call detection relay, 14 ... Time-limited return type time-limited relay, 15 ... AC power supply. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. A position indicator installed at the landing on each floor with lighting elements arranged to display the car position, a timer that operates only during predetermined off-hours, and a car call or landing call when this timer is activated. A position indicator for an elevator, comprising: a timer that operates a predetermined time after the timer is released; and a circuit that turns off or dims all the lighting elements of the position indicator when the timer is activated.