JP2000299943A - Energy-saving power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress wasteful power in standby. SOLUTION: A master machine 1 as electrical equipment is provided with a sub power supply circuit T1 that is recharged by DC obtained, by rectifying a commercial AC power supply AC at night time, while the master machine is in standby, an operation state transition detection circuit DE1 that receives power from the sub power supply circuit detecting an operation state transition signal that changes from the standby state to the operation state of the master machine, and a switch circuit SW1 that is included between a commercial AC power supply and a main power supply circuit T2 and supplies power to a main circuit MA1 of the master circuit 1 from a main power supply circuit in an operation state by the operation state transition signal detection output of the operation state transition detection circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy-saving power supply device, and more particularly to detecting an operation state transition signal which switches off a main power supply circuit connected to a commercial AC power supply in a standby state and shifts from a standby state to an operation state. The present invention relates to an energy-saving power supply device in which power for an operation state change detection circuit is supplied by a standby-dedicated power source that is stored using nighttime low-priced time zone power, thereby suppressing wasteful power in a standby state.

[0002]

2. Description of the Related Art Conventionally, in an intercom apparatus as one of electric appliances, a commercial AC power supply AC is connected to a main power supply circuit T12 of a base unit 10, as shown in FIG. An output power supply of the main power supply circuit T12 is connected to a main circuit MA11 and an operation state change detection circuit DE11 which is a call detection circuit.

[0003] An entrance state machine 12 and an operation switch circuit SW12 such as a hook switch and a monitor switch are connected to an operation state change detection circuit DE11 which is a call detection circuit. The main circuit MA11 is connected to an operation state change detection circuit DE11, which is a call detection circuit, and is connected to another master unit (not shown) such as an expansion master unit. In this intercom apparatus, the commercial AC power supply AC is a main power supply circuit T
In step 12, power is always supplied to the main circuit MA11 and the operation state transition detection circuit (call detection circuit) DE11, and the operation state transition detection circuit (call detection circuit) DE11 is supplied with a call signal from the entrance terminal 12 or a hook switch or monitor. When a trigger signal is input from an operation switch circuit SW12 such as a switch, an activation signal is output, the main circuit MA11 is activated, the intercom apparatus operates, and a call can be made with the entrance terminal 12,
In addition, a call is made with another master unit (not shown) such as an additional master unit. Incidentally, during the day, the number of calls made by calling from the entrance slave unit 12 and the number of calls made to another master unit (not shown) such as an additional master unit are 2 on average.
At the 0th time, about 30 seconds each time. Therefore, during one day, the intercom device operates in only 600 seconds,
The remaining 85800 seconds are in a standby state (standby state). That is, 99.3% of the day is in a standby state (standby state).

[0004]

By the way, in the configuration of the conventional intercom apparatus, the main power supply to the operation state change detection circuit (call detection circuit) DE11 with low power consumption and the main circuit MA11 with large power consumption is performed. Circuit T12
The main circuit MA11, which does not need to operate in the standby state (standby state), is also supplied with power, so that there is a problem in that wasteful power is consumed. In this regard, the power consumption in a standby state (standby state) in one intercom apparatus is 2 to 3 W
For example, if one home has one master and two other masters such as an extension master are installed, 6 to
This means that 9 W of wasteful power is constantly consumed at a large rate of 99.3% of 24 hours a day.

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks of the prior art, and has an operation state in which a main power supply circuit connected to a commercial AC power supply is turned off during a standby state, and a transition is made from the standby state to the operation state. An energy-saving power supply device that suppresses useless power in the standby state by supplying the power of the operation state transition detection circuit that detects the transition signal with the standby-dedicated power supply that is stored using low-priced nighttime power The purpose is to do.

[0006]

In order to achieve the above object, an energy-saving power supply device according to the present invention provides a power supply from a main power supply circuit obtained by rectifying a commercial AC power supply to operate electric equipment. The electric device is a DC power supply that is obtained by rectifying a commercial AC power supply at night when the electric device is in a standby state, and is stored in a DC power supply. An operation state transition detection circuit for detecting an operation state transition signal, and an operation state transition signal detection output of the operation state transition detection circuit interposed between the commercial AC power supply and the main power supply circuit, and the main circuit of the electric device from the main power supply circuit in the operation state during the operation state And a switch circuit for supplying power to the power supply.

Further, in the energy-saving power supply device of the present invention, the sub-power supply circuit comprises: a clock for indicating a time for storing the DC power obtained by rectifying the commercial AC power supply in a standby state of the electric equipment; And a standby-dedicated power supply that rectifies the DC power to obtain a DC, and a standby-dedicated power supply that is stored by the DC and obtained by the standby-dedicated power supply circuit.

In the energy-saving power supply device configured as described above, in the standby state, the main power supply circuit connected to the commercial AC power supply, which consumes a large amount of power, is turned off, and the operation state in which the power consumption shifts from the standby state to the operation state is small. By supplying the power of the operation state transition detection circuit for detecting the transition signal with the standby-dedicated power stored using the low-priced nighttime power, wasteful power during standby can be suppressed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the energy-saving power supply device of the present invention is applied to an intercom apparatus will be described below in detail with reference to the drawings. This intercom apparatus is composed of a base unit 1 as an electric device and a front door unit 2. The intercom apparatus supplies power from a main power supply circuit T2 obtained by rectifying a commercial AC power supply AC to operate the parent device 1 as an electric device.

A master unit 1 as an electric device is a sub power supply circuit T1 which is stored as a DC obtained by rectifying a commercial AC power supply AC at night when the master unit 1 as an electric device is in a standby state, that is, in a standby state. An operation state transition detection circuit DE1 which is supplied with power from the sub power supply circuit T1 and has a small power consumption for detecting an operation state transition signal for transitioning from the standby state to the operation state of the parent device 1 as an electric device, The power is supplied from the main power supply circuit T2 to the main circuit MA1 of the parent device 1 as an electric device in the operation state by the operation state change signal detection output of the operation state change detection circuit DE1 interposed between the commercial AC power supply AC and the main power supply circuit T2. And a switch circuit SW1 for performing the operation.

The operation state change detection circuit DE1 is operated by operating a hook button, a monitor switch (not shown) and the like, and an entrance terminal 2 for outputting a call signal as an operation state change signal by operating a call button (not shown). Switch circuit S which outputs a trigger signal as an operation state change signal by means of
W2 is connected. Further, another master unit (not shown) such as an extension master unit is connected to the main circuit MA1.

Further, in the intercom apparatus as the energy-saving power supply apparatus of the present invention, the sub-power supply circuit T1
Is a clock CL1 that indicates the time to be stored as a DC obtained by rectifying the commercial AC power supply AC in the standby state of the parent machine 1 as an electric device, that is, the standby state, and rectifies the commercial AC power supply AC. It includes a switching regulator or standby-only power supply circuit TB1 for obtaining a direct current, and a standby-only power supply B1 that is stored with direct current and obtained by the switching regulator or the standby-only power supply circuit TB1. As the standby power supply B1, a large-capacity capacitor or a storage battery is used.

In the intercom apparatus configured as described above, in the standby state, that is, in the standby state, the commercial AC power supply AC to the main power supply circuit T2 is turned off because the switch circuit SW1 is open. No power is supplied to the main circuit MA1 and 9 out of 24 hours a day
Unnecessary power in the standby state, which accounts for a large percentage of 9.3%, is not consumed.

The sub-power supply circuit T1 supplies DC obtained by rectifying the commercial AC power supply AC by the standby-dedicated power supply circuit TB1 during the night indicated by the clock CL1, for example, during the low-priced power period from 23:00 to 7:00. The power is stored in the standby power supply B1. The standby-dedicated power supply B1 stored at night has an operation state change detection circuit DE in a standby state that accounts for a large proportion of 99.3% of 24 hours a day.
1 is supplied with power.

Next, when shifting from the standby state to the operation state, the operation state change detection circuit DE1 is operated by operating the call button (not shown) of the entrance slave unit 2 or the call signal or the hook of the operation switch circuit SW2. When an operation state change signal of a trigger signal is input by operating a switch, a monitor switch (not shown), a start signal is output, the switch circuit SW1 is closed, and power is supplied from the commercial AC power supply AC to the main power supply circuit T2. The main circuit MA1 is supplied with power of large power consumption, and the intercom apparatus shifts from the standby state to the operating state to be able to talk to the entrance slave unit 2, and to another master unit such as an extension master unit (not shown). I'm talking to me.

As described above, by supplying power from the sub power supply circuit T1 to the operation state change detection circuit DE1 requiring only low power consumption, it is possible to suppress wasteful power during standby.

[0017]

As is apparent from the above description, according to the energy-saving power supply device of the present invention, the main power supply circuit connected to the commercial AC power supply is cut off in the standby state,
The power of the operation state transition detection circuit that detects the operation state transition signal that transitions from the standby state to the operation state is supplied by the standby-only power supply that is stored using the low-priced time zone power at night, so that wasteful power during standby can be saved. It can be suppressed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an intercom apparatus as an embodiment of an energy-saving power supply apparatus according to the present invention.

FIG. 2 is a configuration diagram illustrating a conventional intercom device.

[Explanation of symbols]

Reference Signs List 1: master unit (electric device) AC: commercial AC power supply SW1: switch circuit T2: main power supply circuit MA1: main circuit T1: sub power supply circuit TB1: switching regulator or standby-dedicated power supply circuit DE1: operation state change detection circuit CL1: clock B1: Standby power supply

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Takanari Ito 2-18-18 Jinnocho, Atsuta-ku, Nagoya-shi, Aichi F-Term in Aiphone Co., Ltd. (Reference) 5G003 AA01 BA01 DA04 DA14 5K038 AA01 CC03 CC12 DD09

Claims (2)

[Claims] When power is supplied from a main power supply circuit (T2) obtained by rectifying a commercial AC power supply (AC) to operate an electric device (1), the electric device is placed in a standby state of the electric device. A sub power supply circuit (T1) which is stored by direct current obtained by rectifying the commercial AC power supply at night, and an operation state change which is supplied with power from the sub power supply circuit and shifts from a standby state to an operation state of the electric device. An operation state transition detection circuit (DE1) for detecting a signal; an operation state transition signal detection output of the operation state transition detection circuit interposed between the commercial AC power supply and the main power supply circuit; A switch circuit (SW1) for supplying power to a main circuit (MA1) of the electric device. 2. A sub-power supply circuit comprising: a clock (CL1) for instructing a time period for storing DC power obtained by rectifying the commercial AC power supply when the electric device is in a standby state; and rectifying the commercial AC power supply. 2. An energy-saving power supply according to claim 1, further comprising: a standby-only power supply circuit (TB1) for obtaining a direct current and a standby-only power supply (B1) obtained by the standby-only power supply circuit. apparatus.