JPH08245090A - Lighting system for elevator car - Google Patents

Abstract

PURPOSE: To maintain energy-saving effect while prolonging the service life of an illuminating lamp in a car. CONSTITUTION: In a normal operating state, an illuminating lamp 1 in an elevator car is lighted to full luminance by a current control circuit 2a. When an elevator stoppage detecting circuit 4 detects the stoppage state of an elevator, a luminance suppressing lighting current reference is supplied to the current control circuit 2a from a luminance suppressing lighting current reference circuit 2c so as to restrict a current fed to the illuminating lamp 1, thus dimming the luminance of the illuminating lamp 1 only by a fixed degree. Accordingly, at the time of detecting the stoppage state of the elevator, the illuminating lamp 1 in the car is not put out but dimmed so as to economize demand and to reduce the frequency of putting on and out the light. As a result, the service life of the illuminating lamp 1 is prolonged, and energy-saving effect is attained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device for an elevator car, which automatically adjusts the brightness of an illumination lamp in the elevator car when the elevator is stopped.

[0002]

2. Description of the Related Art Fluorescent lamps are generally used for lighting in elevator cars in consideration of brightness, efficiency, etc.
For the purpose of energy saving effect, it has been widely used in the past to automatically turn off the lights when the elevator is not in operation, and automatically turn them on again when a new car arrives at the designated floor and the door is opened. Lighting equipment is used.

[0003]

However, in the case of such a conventional lighting device for an elevator car, in order to detect the elevator rest state and repeat the turning off of the lighting lamp, particularly when the lighting lamp is a fluorescent lamp, A high-voltage starting voltage is applied to the filament of the fluorescent lamp at the time of starting the lighting, and the scattering of the thermoelectron emission promoter applied to the filament to facilitate the emission of thermoelectrons increases rapidly. There is a problem that the life of the fluorescent lamp is shortened by repeating the above.

Therefore, even if the elevator hibernation state is detected so as not to frequently repeat lighting and extinguishing, a call may occur immediately after that. Therefore, even after the hibernation state is detected, there is a certain period of time. There is also known an illumination device in which the number of times of turning on and off the light is suppressed by not turning off the illumination light in the car, but in this case, there is a problem of receding in terms of energy saving effect.

The present invention has been made in view of the above conventional problems, and provides an elevator car illuminating device capable of achieving energy saving when the elevator is not operating and suppressing the number of times the illumination lamp is turned on and off. The purpose is to provide.

[0006]

According to a first aspect of the present invention, there is provided an illuminating device for an elevator car, comprising: an illuminating lamp in an elevator car;
Luminance adjusting means for turning on the entire brightness of the illuminating lamp and receiving a luminance suppressing command from the outside to suppress the luminance to a certain degree, and a pause detecting means for detecting a pause state of the elevator and outputting the luminance suppressing instruction to the luminance adjusting means. It is equipped with and.

[0007]

In the elevator car illuminating device according to the first aspect of the invention, the brightness adjusting means keeps the illuminating lamp in the elevator car in full brightness in the normal operation state, and when the rest detecting means detects the rest state of the elevator. A brightness suppression command is output to the brightness adjusting means to darken the brightness of the illuminating lamp in the car by a certain degree.

As a result, even if the elevator stop state is detected, the illumination light in the car is not turned off, but it is made dark to save power consumption and reduce the number of times of turning on and off, thereby extending the life of the illumination light and saving energy. Achieve the effect.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a circuit configuration of one embodiment of the present invention.
Fluorescent lamp 1 as an illuminating lamp installed in an elevator car, lighting control circuit 2 that controls the supply current together with lighting control of this fluorescent lamp 1, power source 3, and lighting control circuit 2 for all brightness lighting command, brightness A pause detection circuit 4 is provided for detecting the running / rest state of the elevator in order to give a suppression lighting command.

The lighting control circuit 2 is composed of an inverter circuit which has been widely used as a fluorescent lamp lighting circuit in recent years, and controls the electric current from the power source 3 so that the fluorescent lamp 1 is turned on at all brightness and is darkened to a certain degree. It is possible to control the lighting by reducing the brightness, and the current control circuit 2a
The current control circuit 2a is provided with an all-brightness current reference circuit 2b for giving a current reference at the time of full-brightness lighting, and a brightness suppression current reference circuit 2c for giving a current reference at the time of brightness-suppressed lighting suppressed by a certain degree.

Full brightness current reference circuit 2 of lighting control circuit 2
b, the stoppage detection circuit 4 for detecting the running / resting state of the elevator in order to give an operation command to each of the brightness suppression current reference circuits 2c, extracts an operating state signal of the elevator from an elevator control device (not shown), and outputs the driving command. Operating state detection relay 5 that operates when there is an open state, b contact 5a that opens by excitation of this operating state detection relay 5, and an elevator door open / close state signal is also extracted from the elevator control device to detect the door state that operates in the door closed state. Relay 6
And an a-contact 6a that is closed by the excitation of the door state detection relay 6, an elevator use state detection relay 7 that is activated / deactivated by a combination of operating states of the operation state detection relay 5 and the door state detection relay 6, and this elevator It consists of a-contact 7a and b-contact 7b which open / close reciprocally according to the operation / non-operation of the usage state detection relay 7, and when these contacts 7a are open and the contact 7b is closed, the full-brightness lighting current The reference circuit 2b is operated, and conversely, when the contact 7a is closed and the contact 7b is open, the brightness suppression current reference circuit 2c is operated.

Next, the operation of the illuminating device for the elevator car having the above structure will be described.

<< Elevator Operation State >> Some of the car calls and hall calls remain, and when there is an elevator operation command, that is, when the elevator is in the operation state, the operation state detection relay 5 is excited, and thereby the b contact 5a. Opens, and the elevator use state detection relay 7 is not excited. Therefore, during the elevator operation, the b contact 7b of the elevator usage state detection relay 7 remains closed, whereby the operation command is input to the full-brightness lighting current reference circuit 2b and the full-brightness lighting current reference is input to the current control circuit 2a. The current control circuit 2a controls the current of the power supply 3 based on this current reference and outputs the current to the fluorescent lamp 1.
Is brightly lit by the full-brightness lighting current.

<< Elevator Resting State >> When there is no call in the car or hall call and the elevator operation command cannot be received, the elevator operation state detection relay 5 is de-energized, and its b contact 5a is closed. Then, the door opens in response to the last call, the passenger gets out of the car, and when the door is closed, the door state detection relay 6 is excited to close the a-contact 6a.

As a result, the contact 5a and the contact 6a are both closed, the elevator use state detection relay 7 is excited, the a contact 7a is closed, and the b contact 7b is opened, so that the contact 7a is opened. An operation command is given to the brightness suppression lighting current reference circuit 2c to operate, and the brightness suppression lighting current reference command is output to the current control circuit 2a. The current control circuit 2a controls the current from the power source 3 to supply it to the fluorescent lamp 1 on the basis of the brightness suppression lighting current reference command, and the fluorescent lamp 1 is suppressed in current and becomes dark even if it is not turned off.

When the elevator operation command is input again in this brightness suppression state, the elevator operation state detection relay 5 is excited, so that its contact 5a is opened and the electrification to the elevator state detection relay 7 is stopped, and the whole operation is resumed. The brightness lighting current reference circuit 2b is activated and the fluorescent lamp 1 is immediately switched to full brightness lighting.

[0017]

As described above, according to the present invention, the brightness adjusting means keeps the illumination lamp in the elevator car turned on at full brightness in the normal operation state, and the brightness is detected when the rest detecting means detects the rest state of the elevator. By outputting a suppression command to the brightness adjustment means to darken the brightness of the car interior lighting by a certain degree, it is possible to reduce the power consumption by darkening the car interior lighting, rather than turning it off even if an elevator stop state is detected. It saves money and reduces the number of times it turns on and off,
It is possible to extend the life of the illuminating lamp and achieve an energy saving effect.

[Brief description of drawings]

FIG. 1 is a circuit block diagram of an embodiment of the invention of claim 1;

[Explanation of symbols]

 1 Fluorescent lamp 2 Lighting control circuit 2a Current control circuit 2b All-brightness lighting current reference circuit 2c Brightness suppression lighting current reference circuit 3 Power supply 4 Rest detection circuit 5 Operating status detection relay 5a b contact 6 Door status detection relay 6a a contact 7 Elevator used Status detection relay 7a a contact 7b b contact

Claims (1)

[Claims] 1. An illuminating lamp in an elevator car, a luminosity adjusting means for illuminating the illuminating lamp with all the luminosity, and suppressing the luminosity to a certain degree in response to a luminosity suppressing command from the outside, and detecting an idle state of the elevator. An illumination device for an elevator car, comprising: a rest detection unit that outputs the brightness suppression command to the brightness adjustment unit.