JPS5917016B2 - Elevator car position display device - Google Patents

Description

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

It is well known that a car position indicator is installed in an elevator landing or in a car.

In this system, indicator lights corresponding to the floors on which the car is used are sequentially lit up as the car moves, indicating the position of the car.

However, in recent years, buildings have tended to be high-rise or super-high-rise, and the number of car position indicator lights has increased accordingly.
It has become difficult to arrange a large number of indicator lights in a limited space.

Therefore, it has been considered to use a digital car position indicator.

Fig. 1 shows this → In the position indicator 11, a display body A consisting of a plurality of stroke pieces is arranged, and these are suitably combined to emit light to display letters and numbers. , the figure shows an example of displaying the 5th floor.

The corner is the periphery of the display body A. This invention has been made in relation to the above, and is not only a simple car position display.
The purpose of the present invention is to provide a digital car position display device which has a wide range of applicability and is additionally equipped with an elevator display function.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In Fig. 2, (g)) is a DC power supply, 12 is a car position signal generator, 1a is a car position contact that is closed when the car is on the 1st floor, and 2a to 6a are the car position contacts on the 2nd to 6th floors. Car position contacts 13 to 18 are hue modulation devices that emit hue modulation signals, and 13a to 18a are normally open contacts of an up direction relay (not shown) that is energized when the car is in the up direction.
3b-18b.

13c to 18c are resistors, and 20 is a well-known diode matrix circuit in which diodes (not shown) are connected in a matrix to convert an input signal into a display character signal.

In Fig. 3, 11a is a light source, 11b is a V lens that transmits the light from the light source 11a, 11c is a polarizer that polarizes the light, and 11d is two glass substrates C on which two transparent electrodes are attached. A liquid crystal cell consisting of a field-effect nematic liquid crystal d sandwiched between the transparent electrodes forms the display A shown in FIG.

fle is an analyzer that polarizes the light transmitted through the liquid crystal cell Hd;
11f is a screen that receives the light and displays it.

Now, if the car is on the first floor and the ascending operation is to be started, the car position contact 1a and the ascending direction relay contacts 13a~
18a is closed.

is understood.

The diode matrix circuit 20 emits an output signal corresponding to the output of the hue modulation device 13, and a voltage determined by the hue modulation device 13 is applied to transparent electrodes S and B of the liquid crystal cell 11d of the car position indicator 11.

It is well known that the liquid crystal molecules of the nematic liquid crystal d change their arrangement depending on an electric field and have birefringence.

The light emitted from the light source 11a is turned into parallel light by the lens llb, becomes linearly polarized light by the polarizer 11 cvC, passes through the liquid crystal cell 11d, and reaches the analyzer 11e.

Due to the birefringence of the liquid crystal cell 11d, light of a specific wavelength is transmitted from the analyzer 11e and projected onto the screen 11f.

The hue modulation device 13 is adjusted so that the hue at this time is green.

As a result, the display A of the car position display 11 displays "1" in green, indicating that the car is on the first floor, and additionally displays that the car is in the ascending operation.

As the car ascends to the 2nd to 6th floors, the contacts 2a to 6a are sequentially closed, and the 2nd to 6th floors are displayed in green in the same way as above.

When the car starts descending operation, the contacts 13a to 18a are opened and the resistors 13b to 18b are disconnected, respectively, so that the voltage applied between the transparent electrodes S and B of the liquid crystal cell 11d becomes lower than before.

This voltage changes the arrangement of liquid crystal molecules of the nematic liquid crystal d, and is adjusted so that the light projected onto the screen 11f becomes red.

As a result, the indicator A of the car position indicator 11 is displayed in red, indicating that the car is in descending operation.

In the above embodiment, the diode matrix circuit 20 was used to reduce the number of electric wires, so a DC power source (]→ was used. However, if the diode matrix circuit 20 is not used, an AC power source can be used.

In addition, although the digital car position indicator 11 that uses a field-effect nematic liquid crystal for hue modulation is shown, there are also conosteric liquid crystals that modulate hue by changing temperature or voltage, color cathode ray tubes, orthogonal two-way display devices. A plasma panel or the like that generates lighting by discharge between the electrodes can be used by constantly applying a square-wave sustain drive voltage to each of the two electrode groups and applying a pulse voltage to one of each electrode group.

Furthermore, instead of the color of the stroke piece A, the background color of the surrounding area B can be made to emit green or red.

In the above embodiment, the present invention was described in which the display is displayed in red or green depending on the driving direction of the car, but it can also be applied to this 9'+ in the following cases.

(f) The position indicator of a car that can respond to a registered hall call is displayed in green, and the position indicator of a car that cannot respond to a registered hall call is displayed in red.

(b) A running car is displayed in green, and when it is decided to stop at that floor, it is displayed in red.

(Of course, when a car is assigned to a hall call, among the halls corresponding to that car, the hall position indicator of the floor where the hall call is registered is displayed in red, and the other floors are displayed in green.

2) The floor where the hall call is registered is red, and the rest is 1A (
Non-service floors) are displayed in green.

A non-service floor is a floor that does not have a landing for that car and is included in the shared floor area of other cars.

(3) Cars that are within the pre-planned operation management are displayed in green, and cars that are not under management are displayed in red.

Note that the emitted light color is not limited to green and red, but may be other colors.

As explained above, the present invention changes the color of the display body or the surrounding area of the digital car position indicator depending on the driving direction of the car. can be displayed simultaneously, resulting in a well-organized car position display device.

[Brief explanation of the drawing]

Fig. 1 is a front view of a digital car position indicator, Fig. 2 is a circuit diagram showing an embodiment of an elevator car position indicator according to the present invention, and Fig. 3 is a digital car position indicator of Fig. 2. FIG. 2 is a configuration diagram showing an example. A... Display body, B... Surrounding part, 1a~
6a... 1st to 6th floor car position contacts, 11...
...Digital car position indicator, 12...Car position signal generator, 13-18...Hue modulation device, 13a-18a...V-contact in upward direction , 13b-18bs13c-18c...Resistance,
20...Diode matrix circuit. Note that the same parts in the figures are indicated by the same reference numerals.

Claims (1)

[Claims] 1. In a display body consisting of a plurality of stroke pieces that digitally displays the car position by changing its arrangement in response to an input corresponding to the car position, a direction detection circuit that emits an output that changes depending on the driving direction of any of the above. An elevator car position display device comprising: a hue modulation device that changes the display body or its surroundings to a color according to the output of the direction detection circuit.