JPS61243693A - Automatic lighter/extinguisher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to an automatic lighting/extinguishing device, and particularly to an automatic lighting/extinguishing device that individually turns on/off some illumination lights as necessary.

(Technical background of the invention and its problems) Conventionally, in street lights, in-plant lights, etc., all lighting lights in one system are turned on or off at the same time using a photo switch that uses a predetermined illuminance as a threshold. Various types of automatic lighting/extinguishing devices have been proposed and used.

For example, as an automatic light-off switch, an "automatic light-off switch" disclosed in Japanese Utility Model Application No. 59-152632 is known. This simply dims the light and turns off the light automatically after a predetermined period of time has passed after the switch is operated.

However, these conventionally known automatic lighting/extinguishing devices all have a structure that uniformly turns on and off even when some of the illumination lights are unnecessary.

Therefore, from the viewpoint of energy saving (power consumption), it must be said that this is extremely uneconomical. Therefore, it is desirable to realize an automatic lighting/extinguishing device for street lights, etc., which is configured so that each lighting light is controlled to be turned on and off individually depending on the degree of need for turning on and off. (Object of the Invention) The object of the present invention is to provide an automatic lighting/extinguishing device that can turn on and off each lighting lamp individually and can be easily used in existing equipment. be.

(Summary of the Invention) The present invention provides an individual lighting/extinguishing control unit that individually controls lighting/extinguishing of lighting lights as needed, in addition to a control unit that controls turning on/off of all the lighting lights in one system. Features.

(Embodiments of the Invention) Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

The drawing shows a systematic wiring diagram of an automatic lighting/extinguishing device according to an embodiment of the present invention. In the figure, 200V of three-phase AC
Voltage (50Hz or 60H2) is applied to three 4
It is supplied to 00W mercury lamps (illumination lamps) Ll to L3, respectively. Although a large number of these mercury lamps are normally connected, only three lamps are shown here for convenience of explanation.

Each of the three mercury lamps Ll-L3 has fuses Fl and F2 connected in series between two three-phase AC supply lines. A timer 1 is installed in the first mercury lamp Ll, and its re-drive end is connected in parallel to the mercury lamp LL on the mercury lamp Ll side. Also, this timer l
A contact 2, which is closed and opened by the operation of , is interposed between the fuse F1 and the mercury lamp Ll.

The no fuse breaker NFB and mask switch (
MS) 3, a fuse F3 and a photoswitch 4 are connected in series through the power supply terminal 4a and common terminal 4b in the three-phase AC two supply line. This photoswitch 4 has a configuration in which a heater 5 and a light receiving element 6 are connected in series between a power supply terminal 4a and a common terminal 4b.

Further, an on/off switch 7 is provided between the power supply terminal 4a and the load terminal 40.

Load terminal 4C and common terminal 4b of switch 4
An electromagnetic winding 8 for driving the master switch (MS) 3 from the outside is connected between them.

Next, the operation of the device of the present invention will be explained.

By the way, it is assumed that the apparatus of this embodiment is placed in a factory, for example. The second mercury lamp L2 is an illumination light at the entrance of the T field, and is always turned on at night. Further, the third mercury lamp L3 is an illumination light for the workplace at night in the factory, and is also constantly lit at night. On the other hand, only the first mercury lamp L1 is a lighting lamp for a certain specific ρ workplace, and the working hours there are, for example, until 23:00.

Therefore, first, the operating time t of the timer 1 connected to the first mercury lamp L1 is set to 23:00. This timer 1
The contact 2 that responds to the operation of is in a closed state in the normal state before the timer is activated, and is in an open state after the timer is activated (time tAD).

By the way, if the external illuminance is too high to turn on the lighting lamp, the photo switch 4 will not operate.
Master switch 3 is not turned on and three mercury lamps Ll-L
3 is in the off state. That is, when the illuminance of external light is high, the operating resistance of the light receiving element 6 is extremely large, and no current flows to the heater 5. Therefore, the open/close switch 7 is off, and the master switch electromagnetic winding 8 is also not energized.

Now, when the illuminance due to external light decreases (for example at night),
The illuminance at the light receiving element 6 of the foi switch 4 is below the dark value, and the operating resistance of the element 6 is extremely small (short circuit state).
Become. As a result, current also flows through the heater 5, and the switch 7 is energized and closed.

When the photoswitch 7 is closed in this manner, the electromagnetic winding 8 for the master switch 3 is energized. Therefore, the mask switch 3 is dynamically driven and turned on by the magnetic field generated by the electromagnetic winding 8.

In response to this, three-phase AC 200V is simultaneously supplied to each of the three mercury lamps LL-L3, allowing them to be lit at the same time. This lighting condition indicates the no fuse breaker NFB.
Or fuse F3 is blown, or individual fuse F1
．． Continue until F2 expires.

Thereafter, when the illuminance due to external light gradually increases and exceeds a predetermined illuminance threshold (during the daytime), the operating resistance in the light receiving element 6 of the photoswitch 4 becomes extremely strong again, and the switch 7 is opened. Therefore, the electromagnetic winding 8 is de-energized and the master switch 3 is released from the closed state.

Therefore, the three mercury lamps L1 to L3 are turned off all at once.

The above-L is an operation in which all the mercury lamps L1 to L3 are automatically turned on and off in the same manner.

Now, the device of the present invention has one operation time tA as described above.
D Timer 1 set to 23:00 turns on the first mercury lamp L.
connected to l. This set operation time t4+ is the same as the above-mentioned 1. This time is earlier than when the lights turn off automatically.

Therefore, before the mercury lamps Ll-L3 are automatically turned off all at once, the timer 1 is activated and the response contact 2 is activated at the set time tA.
It becomes open at D. As a result, the first mercury lamp L1
The supply of AC 200V to the mercury lamp L1 is cut off, and the mercury lamp L1
Lights go out at 3 o'clock. Since the area where the mercury lamp L1 is installed does not need to be illuminated after 23:00, there is no problem in turning it off. Therefore, since unnecessary lighting (mercury lamp LL) is automatically turned off, power is not wasted and it is economical.

This timer 1 may be set to return in response to the time when the photoswitch 4 operates again and automatically turns off the light as described above. However, the timer recovery means will be omitted.

When the contact 2 returns to the closed state due to the timer recovery, preparations can be made for the next automatic light-off of the photoswitch 4.

By repeating the above operation every day, it is possible to repeatedly turn the light on and off and turn off the first mercury lamp L1 at the set time t.

In addition, in the embodiments described above, a timer l was provided for only the first mercury lamp LL so that the lamp would be turned off at a desired time (23:00), but the other mercury lamps also have individual timers. It may also be configured such that the lights are automatically turned off at the time when the lights are no longer needed. In that case, since the time at which illumination becomes unnecessary may vary depending on the location where the mercury lamp is installed, the activation set time tAo may be changed for each timer. Since the set time tAo of the timer can be set and changed at any time, the time when the lights are automatically turned off each day can be changed by setting it to coincide with the end of work at the location where the lighting is set.

By the way, with regard to automatic lighting/extinguishing devices that are already installed and automatically turn on/off lights across the board, lighting lights can be turned off individually by simply providing a timer and its contacts 2 as needed. Therefore, even existing conventional devices can be used as the automatic lighting/extinguishing device of the present invention at low cost.

Further, in the above-mentioned embodiment, the light is automatically turned off using a timer, but the light may be turned on automatically at the set time. That is, the contact 2 is kept open before the timer's activation set time tAD, and even when the photoswitch 4 is activated and the lights etc. are turned on all at once, the first mercury etc. L1 remains off. put. And timer l
When the work setting time tAD is reached, the first mercury L1 is turned on with a delay due to the operation of the timer 1.

This is effective when the working hours at the location where the first mercury etc. Ll is installed are later than when all the illumination lights are turned on at the same time. In this case, the first mercury lamp L1 and the other mercury lamp L2
, L3 are automatically turned off all at once.

In the above embodiment, when the timer l is activated (tAI), the first
Although the mercury lamp Ll is configured to be turned off, the configuration may be such that it is not completely turned off, but can be switched to turn on a night light with low illuminance (for example, 20 W). In this case, the contact 2 may be a two-contact type switch, or the timer 1 may be used to close another contact to turn on the night light. In this way, if the night light is turned on after the mercury lamp Ll is turned off, it is convenient for the security guard to patrol, for example.

(Effects of the Invention) According to the present invention, in addition to the control unit that turns on and off all lighting fixtures in one system all at once, there is an individual control unit that automatically turns on and off each lighting lamp as necessary. By establishing a department,
It is possible to provide an economical automatic lighting/extinguishing device that can reduce power consumption by changing the lighting/extinguishing time as appropriate.

[Brief explanation of the drawing]

The drawing is a systematic wiring diagram of an automatic lighting/extinguishing device according to an embodiment of the present invention. 1-----1--Timer, 2---------One contact, 3-----Master switch, 4-----11--Photo switch, 8- −1−−−
---Electromagnetic winding, NFB----No fuse play force, Ll-L
3---One mercury lamp.

Claims (1)

[Scope of Claims] 1. A plurality of illumination lamps to which illumination power is commonly supplied and each of which can be turned on, and control for uniformly controlling supply and interruption of the illumination power to the plurality of illumination lamps. and an individual control means for individually controlling at least one of the plurality of illumination lights to turn them on and off. 2. The automatic lighting device according to claim 1, wherein the individual control means includes a timer, and controls turning on and off of a predetermined illumination light in accordance with a set time for operation of the timer. Device.