JPH04292385A - Display device for elevator - Google Patents

Abstract

PURPOSE:To ensure rapid response without damaging decorative properties and to facilitate energy saving drive by continuously or intermittently applying a voltage on a liquid crystal plate arranged in front of a source lamp. CONSTITUTION:A fluorescent lamp is used as a lamp for hall lantern and a liquid crystal plate 15 brought into a light transmissible state by applying a voltage and brought into a light non-transmissible state by stopping application of a voltage is arranged in front of a lamp 13. In which case, when the hall lantern is lighted ON, a voltage is applied on the liquid crystal plate 15, which is brought into a light transmissible state. From this state, it is recognized that an elevator is allotted. When an elevator being an allotted elevator approaches a call floor, a liquid crystal control device 16 intermittently applies a voltage on the liquid crystal 15 in a state to maintain the lamp 13 in a continuous lighting-ON state by means of a lamp control device 14. By alternately switching a light transmissible state and a disconnecting state, it is seen from the hall side that intermittent lighting is effected, and arrival of the elevator is reported.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

[Field of Industrial Application] The present invention relates to an elevator display device, and more particularly to a hall lantern for displaying call registration and arrival in an elevator hall, an indicator for displaying the position of an elevator car in an elevator car or in an elevator hall, and furthermore, The present invention relates to an elevator display device such as a message display device for displaying necessary messages to customers waiting in a hall or to passengers in a car.

0002

[Prior Art] Conventionally, elevator display devices have been used in halls, such as hall lanterns, indicators for floor display, up/down push buttons, message display devices for displaying necessary information, and in elevator cars. are equipped with indicators and message display devices to display floors. and,
Traditionally, incandescent lamps have been widely used as light sources for such display devices, but with recent advances in semiconductor technology, light-emitting elements with a large amount of light have come into practical use, and indicators for displaying floors have become popular. Light-emitting diodes are becoming widely used in such devices.

FIG. 7 shows an outline of a general elevator hall. When registering an elevator hall call, the lights are lit continuously to indicate the assigned car number, and when the elevator of that number arrives, the arrival is indicated. It is provided with a hall lantern 1 that flashes to indicate the hall, a hall call button 2 for making a hall call for the elevator, and an elevator door 3.

[0004] Conventionally, the hall lantern 1 is shown in FIG.
It has a circuit configuration as shown in FIG. 9, and includes a lantern control device 5 for controlling the continuous lighting and blinking of the incandescent hall lantern 4, and the lantern control device 5 controlling the opening/closing operation. A relay switch 6 and a lamp power source 7 are provided.

When a passenger presses the hall call button 2 in the direction of the destination, the input signal is input to the group management control device, which selects the elevator number with the best service at that time and calls the hall lantern 1 of that number. lights up. Seeing this, the passenger knows which car he or she should board, moves to the elevator door 3 of that car, and waits for the elevator to arrive.

[0006] When the elevator approaches, the vehicle starts decelerating, and from this point on, the hall lantern 1 switches to blinking to notify passengers that the elevator is approaching. When the elevator arrives, this hall lantern 1 will be turned off.

Further, as shown in FIG. 10, the hall indicator 8 is attached to the upper part of the elevator door 3 of the elevator hall, and conventionally, the structure shown in FIGS. 11 and 12 is used to display the corresponding floor part. I try to do that.

That is, in the case of the sixth floor shown in the figure, there are incandescent indicator lamps 9a to 9f, a floor display control device 10, relay contacts 11a to 11f for controlling the lighting of the indicator lamps 9a to 9f, and lamps. A power source 12 is provided.

[0009] Then, by energizing the floor relay at the position where the car is, the relay contacts 11a to 11f are activated.
Activate the corresponding floors and display lamps 9a to 9.
The floor is displayed by lighting up the corresponding floor of f.

0010

[Problems to be Solved by the Invention] However, in such a conventional elevator display device, the display lamp must have a quick response to the operation of a push button, and in order to perform a blinking display, etc. However, because a quick response was required, it was not possible to use fluorescent lights that took a long time to turn on. Furthermore, since incandescent lamps are still superior in terms of luminescence and design, incandescent lamps are widely used as indicator lamps, especially in elevator installation locations where design is important.

However, when incandescent lamps are used as indicator lamps, power consumption increases, and a large power supply is required to supply the lamps, especially when the floors are high.
A large number of supply lines for supplying power are also required. In addition, in the case of an incandescent lamp, a rush current several times higher than normal flows when the lamp is turned on, so a power supply capacity that can handle this rush current is required. Furthermore, in the case of an incandescent lamp, a driver that takes rush current into account is required to turn on the lamp, and the control circuit is also large in size.

On the other hand, there are display lamps that use LED light emitting elements, but although LED light emitting elements have a long life and do not have the problem of rush current, they use direct current and have a low driving voltage. Furthermore, as the floors become higher and the length of the electric wires becomes longer, the voltage drop increases, and there may be a difference in brightness between the upper and lower floors, so it is necessary to take the voltage drop into consideration. Another problem was that it was not possible to obtain the large amount of light required by hall lanterns and the like.

[0013] The present invention has been made in view of these conventional problems, and it is an object of the present invention to provide a display device for an elevator that is energy-saving and easy to drive, without impairing its design, and having quick display responsiveness. With the goal. [Structure of the invention]

[0014]

[Means for Solving the Problems] An elevator display device of the present invention includes a light source lamp, a lamp control device that controls turning on and off of the light source lamp, a power source for the light source lamp, and a power source in front of the light source lamp. a liquid crystal plate disposed, which transmits the light from the light source lamp in whole or in part by applying a voltage, and stops transmitting the light from the light source lamp by stopping the application of the voltage;
and a liquid crystal control device that controls application and stop of voltage application to the liquid crystal plate.

Further, the elevator display device of the present invention continuously lights the light source lamp and continuously or intermittently applies a voltage to the liquid crystal plate, thereby registering the hall call of the elevator. display or arrival display.

Further, in the elevator display device of the present invention, message characters are applied to the liquid crystal panel, and only the message character portion is displayed by applying a voltage. Alternatively, the light source lamp may be lit continuously, leaving the message text portion intact, and light may pass through other portions, and the liquid crystal control device may apply a voltage to the liquid crystal panel when a message needs to be displayed. By doing so, a message can be displayed.

Further, the elevator display device of the present invention includes a light source lamp, a lamp control device for controlling turning on and off of the light source lamp, a power source for the light source lamp, and
Disposed in front of the light source lamp, when voltage is applied, light from the light source lamp is transmitted through to display each floor number of the building where the elevator is installed, and when voltage application is stopped, transmission of light from the light source lamp is stopped. The light source lamp is equipped with liquid crystal plates arranged in numerical order in a vertical or horizontal line, and a liquid crystal control device that controls application and stop of voltage application to the liquid crystal plate for each floor number, and the light source lamp is continuously operated. At the same time, a voltage is applied to the liquid crystal plate corresponding to the floor number on which the elevator is located, so that the light from the light source lamp is transmitted through the liquid crystal plate corresponding to the floor number, thereby displaying the floor. be able to. Further, in the elevator display device of the present invention, the light source lamp may be a fluorescent lamp.

[0018]

[Operation] In the elevator display device of the present invention, by continuously or intermittently applying a voltage to the liquid crystal plate placed in front of the light source lamp, the light from the light source lamp is continuously transmitted throughout the liquid crystal plate. By making the light from the light source lamp shine or transmit it intermittently, it can appear to the person looking from the front as if the light from the light source lamp is lit continuously or intermittently. Even if a light is used, continuous lighting display or blinking display can be achieved by operating the fast-responsive liquid crystal panel.

Moreover, in this case, since the light source lamp side can be kept lit continuously, especially when an incandescent lamp is used, there is no need to turn on and off the incandescent lamp frequently, which reduces the lifespan of the control device. can be extended.

[0020]Also, if message characters are written on the liquid crystal plate placed in front of the light source lamp, and voltage is applied to this liquid crystal plate as needed while the light source lamp is continuously lit, The light from the light source lamp passes through the message text portion, or the message text portion remains and other portions, allowing necessary information to be displayed in text.

Further, in the elevator display device of the present invention, the light source lamp is continuously lit, and the light source lamp is placed in front of the light source lamp, and the light from the light source lamp is transmitted by applying a voltage to indicate each floor number. The liquid crystal control device applies a voltage to the liquid crystal plate on which the floor number of the elevator is displayed, and the liquid crystal plate stops transmitting light from the light source lamp by stopping the application of the voltage. For example, it becomes possible to display a floor by transmitting light from a light source only through the part corresponding to the floor number, or through other parts while leaving the part corresponding to the floor number.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be explained in detail below with reference to the drawings. 1 to 3 show the structure of a hall lantern device as an embodiment of an elevator display device of the present invention.

In the hall lantern device of this embodiment, as shown in FIG. 1, a fluorescent lamp is used as the hall lantern lamp 13, and this fluorescent lamp is connected to the lamp control device 1.
4, the lights are turned on and off. In front of the hall lantern lamp 13, a liquid crystal plate 15 is placed which exhibits a property of becoming light-transparent when a voltage is applied and becomes light-opaque when the voltage is stopped. A liquid crystal control device 16 for applying
is provided.

As shown in the circuit diagram shown in FIG. 3, there is provided a lighting circuit 17 that turns on and off the hall lantern lamp 13, and a relay contact 18 that opens and closes according to commands from the lamp control device 14. When the contact 18 is closed, the lamp 1 is supplied from the power source 19 through the lighting circuit 17.
Power is supplied to 3 and it lights up.

Further, the liquid crystal plate 15 is provided with a relay contact 20 that opens and closes according to commands from the liquid crystal control device 16. When the relay contact 20 closes, the power source 21
A voltage is applied to the liquid crystal plate 15 from 1 to 3 to change its light transmittance. Next, the operation of the elevator display device having the above configuration will be explained.

When no voltage is applied to the liquid crystal plate 15,
The internal crystalline arrangement is as shown in Figure 3(b) and does not allow light to pass through, but by applying a voltage it changes to the crystalline arrangement shown in Figure 3(a), allowing light to pass through. It becomes transparent.

Therefore, when using this property to light up the hall lantern, first, the relay contact 20 is not closed and no voltage is applied to the liquid crystal plate 15, and the first step is as shown in FIG. 4(a). As shown at timing t1, the hall lantern lamp 13 made of a fluorescent lamp is turned on by closing the relay contact 18. Then, at timing t2 shown in FIG. 4(b), the relay contact 20 is turned on to apply a voltage to the liquid crystal plate 15, changing it to a light transmitting state.

[0028] As a result, on the hall side, the lamp 13
The light from the screen now passes through the liquid crystal plate 15 and comes out.
The lantern will appear to be lit continuously, and you will be able to recognize that you have been assigned an elevator.

Subsequently, at timing t3 when the assigned elevator approaches the called floor, the lamp control device 14
As shown in FIG. 4(a), the liquid crystal control device 16 repeatedly turns on and off the relay contact 20 while keeping the lamp 13 in a continuous lighting state, so that the liquid crystal plate 15 is turned on as shown in FIG. 4(b). By applying a voltage intermittently to alternately switch between a light transmitting state and a blocking state,
The lantern appears to be lit intermittently from the hall side, which can alert you to the arrival of the elevator.

When the hall lantern device is configured in this way, even though the lantern lamp 13 is lit continuously, it appears to the passengers in the hall as if the lamp is continuously lit or blinking. can be shown. In this case, the power to the lamp 13 side, which consumes a relatively large amount of power, is turned on only when it is turned on and when the light is turned off, and only the liquid crystal panel 15 side, which consumes less power, is turned on when the lamp blinks. This simplifies the drive circuit, and also enables the use of fluorescent lamps, which have poor responsiveness, as in the above embodiments, as the lantern lamp 13, resulting in energy savings.

Furthermore, a normal incandescent lamp can be used as the lantern lamp 13, but even in that case, the number of times the switch is turned on and off is significantly reduced compared to conventional lamps, so the lamp life can be extended. In addition, by reducing the number of times a large current circuit is cut, the life of the lamp control device 14 is extended, and costs can be reduced. FIG. 5 shows an indicator for displaying the position of an elevator installed in an elevator hall or car as another embodiment of the present invention. In this embodiment, a fluorescent lamp is used as the light source lamp 22, and its lighting is controlled by a lamp control device 23.

[0032] Elevator floor numbers for the 1st to 6th floors are placed in front of the light source lamp 22, and when a voltage is applied, only the number display portion becomes light-transmissive.
Or, conversely, the liquid crystal plate 24a is made to display numbers by leaving the number part and making other parts transparent.
, 24b, . . . , 24f are arranged. Each liquid crystal board 24
a, 24b, . . . , 24f are connected to a liquid crystal control device 25.

The circuit configuration of this elevator indicator is as shown in FIG.
4f each has a relay contact 26a, 26b,...,
It is connected to the power supply 27 via 26f. Next, the operation of the elevator indicator having the above configuration will be explained.

The light source lamp 22 is kept lit continuously, and the liquid crystal control device 25 receives the elevator position information.
By selecting and driving the relay contacts 26a, 26b, . . . , 26f connected to the liquid crystal plates 24a, 24b, . The number display is performed by changing the state of the number display portion of the liquid crystal plate, or the other portions except the number display portion, to be light-transmissive, and transmitting the light from the light source lamp 22.

With this configuration, unlike conventional indicators, a lamp or LED can be installed on each floor.
It will be possible to display the floor using only a small amount of electricity to drive the liquid crystal, without having to use an LCD screen.

Note that the present invention is not limited to the above-described embodiments. For example, in order to display a message, a liquid crystal panel on which necessary message characters are applied in advance is placed in front of the light source lamp, and the light source is It is also possible to construct a display device that displays a message by keeping the lamp lit continuously and applying a voltage to the liquid crystal plate as needed to change the state of the character display portion to light-transmissive.

Similarly, for the call button, a liquid crystal plate is placed in front of the light source lamp, and when a call is registered, a voltage is applied to the liquid crystal plate side to change it to light transparency. It is also possible to display the registration button part as if it were illuminated when viewed from the passenger.

Furthermore, in each of the above embodiments, instead of making only the number display portion or the character display portion transparent by applying a voltage, the other portions are made transparent while leaving the number display portion or the character display portion. It is also possible to change the transparency. In that case, it can be constructed by writing numbers or letters on a single ordinary liquid crystal panel with light-opaque paint, or by embedding light-opaque plastic. Manufacturing becomes easier.

[0039]

As described above, according to the present invention, a liquid crystal plate that becomes light transparent when a voltage is applied is arranged in front of a continuously lit light source lamp, and a voltage is applied to the liquid crystal plate. By controlling the power to be applied intermittently, the light appears to be blinking when viewed from the front, or by using a liquid crystal panel with floor numbers and necessary message characters, the light source lamp can be applied continuously. When the lights are on, the floor number or message is displayed by controlling the voltage applied to the liquid crystal panel, so there is no need to turn on and off the light source lamp as often as in the past. The lifespan of the light source lamp can be extended, and the control device on the light source lamp side, which handles large currents, has significantly fewer power-on and power-off operations, extending its life and reducing overall costs. . Further, since the light source lamp is not frequently turned on and off, a fluorescent lamp with poor response time can be used as the light source lamp, and energy saving can be achieved.

[Brief explanation of drawings]

FIG. 1 is a circuit block diagram of a hall lantern device as an embodiment of the present invention.

FIG. 2 is a circuit diagram of the above embodiment.

FIG. 3 is an explanatory diagram showing the operation of the above embodiment.

FIG. 4 is a timing chart showing the operation of the above embodiment.

FIG. 5 is a circuit block diagram of an indicator as another embodiment of the invention.

FIG. 6 is a circuit diagram of the above embodiment.

FIG. 7 is a schematic diagram of a typical elevator hall.

FIG. 8 is a circuit block diagram of a conventional hall lantern device.

FIG. 9 is a circuit diagram of a conventional hall lantern device.

FIG. 10 is a schematic diagram of an elevator hall in which a conventional elevator indicator is installed.

FIG. 11 is a circuit block diagram of a conventional indicator.

FIG. 12 is a circuit diagram of a conventional indicator.

[Explanation of symbols]

13 Lantern lamp 14 Lamp control device 15 Liquid crystal board 16 Liquid crystal control device 22 Light source lamp 23 Lamp control device 24a-24f Liquid crystal board 25 Liquid crystal control device

Claims (5)

[Claims] 1. A light source lamp, a lamp control device for controlling turning on and off of the light source lamp, a power source for the light source lamp, and a liquid crystal plate disposed in front of the light source lamp, the lamp control device comprising: a light source lamp; a lamp control device for controlling turning on and off of the light source lamp; A device that transmits the light from the light source lamp in whole or in part and stops transmitting the light from the light source lamp by stopping the application of a voltage, and a liquid crystal that controls the application and stopping of the voltage to the liquid crystal plate. An elevator display device comprising a control device. 2. The elevator display device according to claim 1, wherein the light source lamp is continuously turned on and a voltage is continuously or intermittently applied to the liquid crystal plate. Displays hall call registration or arrival. 3. The elevator display device according to claim 1, wherein message characters are applied to the liquid crystal panel, and by applying a voltage, only the message character part or the message character part is left and other parts are exposed to light. transmitting the light, and continuously lighting the light source lamp,
When a message needs to be displayed, the liquid crystal control device applies voltage to the liquid crystal plate to display the message. 4. A light source lamp, a lamp control device that controls turning on and off of the light source lamp, a power source for the light source lamp, and a lamp control device that is arranged in front of the light source lamp and controls the light from the light source lamp by applying a voltage. A liquid crystal panel that displays the floor number of each floor of the elevator and that stops transmitting light from the light source lamp when the voltage is stopped, and is arranged in numerical order in a vertical or horizontal row, and each of the floors. and a liquid crystal control device that controls application and stop of voltage application to the liquid crystal board for each floor number, and continuously lights the light source lamp and applies voltage to the liquid crystal board corresponding to the number of the floor where the elevator is located. A display device for an elevator, which displays a floor by transmitting light from the light source lamp to a liquid crystal panel corresponding to the floor number. 5. The elevator display device according to claim 1, 2, 3, or 4, wherein the light source lamp is a fluorescent lamp.