JPH0998487A - Power supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily connect an external power supply when the power supply capacity to be used increases. SOLUTION: An operation is performed by power supplied by a power supply and at least three terminals a, b and c are provided in an equipment. The equipment side of the terminal a is connected to an internal power supply provided inside the equipment, the equipment side of the terminal b is connected to a power supply voltage line for operating the equipment and the equipment side of the terminal c is provided with an external connection means connected to a ground line. The external connection means attains a connectable state by selecting a first connection means provided with at least two terminals a and b for which the terminal a and the terminal b are short-circuited or a second connection means provided with at least two terminals b and c for which the external power supply is connected between the terminal b and the terminal c.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device for supplying power to equipment, and more particularly to a power supply device capable of switching between internal power supply and external power supply of equipment.

[0002]

2. Description of the Related Art Conventionally, as a technique of this type, for example, FIG.
And the one shown in FIG. As shown in FIG. 4, the water heater 1 which is the main device is connected to the main remote controller 10 installed in the kitchen and the flow remote controller 15 installed in the bathroom by a two-core signal line. The operation such as hot water supply can be performed at a predetermined temperature in a predetermined place according to the operation, which is very convenient.

As shown in FIG. 5, the specific contents of the power supply are such that the internal power supply 9 supplies power to the water heater 1 and the power supply line side of the two-core signal line. As a result, power is supplied from the water heater 1 side to the main remote controller 10 and the flow remote controller 15 through the two-core signal line, and the communication control means 2 transmits signals to the remote controller 10, 15 side through the two-core signal line. To be able to do.

Further, as another conventional example, there is an invention described in Japanese Patent Application Laid-Open No. 5-183963 filed by the applicant of the present application. The present invention confirms the currently connected remote controller when the power is turned on, and enables communication according to the connection state, thereby enabling additional connection of a plurality of remote controllers.

[0005]

Conventionally, there is the above-mentioned one, and in the conventional one, since the power is supplied from the main body side to the remote controller side, the remote controller side does not need to have a power source. Has the advantage of being lightweight and simple in construction.

On the other hand, however, there is a problem that the load on the power source on the main body side increases. For example, in the case where the remote controller can be added and deleted as shown in the second conventional example, when a large number of remote controllers are connected, the capacity of the internal power supply 9 on the main body side may be exceeded, which is appropriate. There is a problem that the device stops working.

If a large internal power source is provided in advance in consideration of such a case, there is a problem that the main body side becomes large-scaled and the weight thereof increases considerably. In particular, when only a small number of remote controllers are connected, the power supply used for the power supply capacity is small and it is uneconomical, which is not a preferable state.

In addition, it is desired to add an electronic device later in the present day when a television and a radio are added to the remote controller, and systemization and multifunctionalization are desired. Even in such a case, a power source problem occurs when the above remote controller is added, which is a particularly important problem.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a power supply that can be easily switched and the capacity of the power supply can be easily changed.

[0010]

In order to solve the above-mentioned problems, the present invention takes the following means. The invention according to claim 1 is a device that is operated by electric power supplied from a power source, and is connectable to an internal power source inside the device, an external power source outside the device, and a plurality of types. , By the connection of the first connecting means,
The internal power source supplies power to the device, and the second connection means, which is separate from the device, is connected to the external power source to provide power to the device. And an external connection means.

If more power than the power that can be supplied by the internal power supply is required, the second connecting means is connected.

The invention according to claim 2 is a device which operates by electric power supplied from a power source, wherein the device has at least three terminals (a, b, c), and the device side of the terminal a is An external power supply connected to an internal power supply provided inside the device, a device voltage side for connecting the device side to a power supply voltage line for operating the device, and a device side terminal c for connecting to a ground line. , The external connection means has at least two terminals (a, b), and the first connection means in which the terminals a and b are short-circuited, or at least two terminals (b, c) The second connecting means to which an external power source is connected is selected between the terminal b and the terminal c and is in a connectable state.

When an external power source is required, the external connecting means is replaced with the second connecting means.

According to the third aspect of the present invention, there is provided a water heater main body, and a remote controller which is connected to the water heater main body by a two-core signal line to supply power from the main body side and transmit a signal. In addition, the water heater main body has at least three terminals (a, b, c), the main body side of the terminal a is connected to an internal power source provided therein, and the main body side of the terminal b is connected to the main body side. Connected to the power line side of the two-core signal line,
External connection means connected to the ground line on the main body side of the terminal c, and the external connection means has at least two terminals (a, b), and the terminal a and the terminal b are short-circuited. Connection means, or at least two terminals (b, c)
And a second connection means to which an external power source is connected is selected between the terminals b and c and is in a connectable state, and the two-core signal line connected to the remote controller is , And is capable of supplying power to another electronic device via the filter.

When an electronic device that requires a large amount of power is connected by using the two cores, the second connecting means is connected to the external connecting means on the main body side.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 shows the configuration of the present invention. For example, a main body 1 such as a water heater has a communication control unit 2, a communication connection unit 3, an external connection unit 4, an internal power supply 9, and the like. Further, the main remote controller 10 and the system device 20 are connected to the communication connection means 3 of the device body 1 by a communication line. The communication line is a two-core signal line, and from the device body 1 side to the main remote controller 10,
Power is supplied to the system equipment 20 and signals can be time-division multiplexed and communicated with each other.

Further, a first connecting means 5 and a second connecting means 7 are provided separately from the device body 1.

Next, the configuration of each part will be described in detail. The communication control means 2 provided in the device body 1 controls communication between the device body 1 and the terminals 10 and 20 connected thereto. Communication line and coupling capacitors C1 and C2
And is configured to block a DC component and superimpose a communication signal on a communication line. Further, a surge clamper SC, which is an element for removing noise on the communication line, and a diode D are connected between the two core wires.

The external connection means 4 is a three-terminal connector having terminals a to c. The internal power supply 9 is connected to the terminal a. The terminal b is connected to the power line side of the two-core signal line, and the terminal c is connected to the ground side of the two-core signal line. The external connection means 4 can be connected by selectively selecting the first connection means 5 or the second connection means 7 which are separately provided.

The first connecting means 5 has three terminals a to c, and the terminals a and b are short-circuited. Therefore, when the first connecting means 5 is connected to the external connecting means 4, the internal power supply 9 can supply power to the two-core signal line through the terminals a and b. The second connecting means 7 has three terminals a to c.
The external power supply 8 is connected between the terminals b and c. Therefore, when the second connecting means 7 is connected to the external connecting means 4, the external power source 8 can supply power to the two-core signal line through the terminals b to c. By doing so, when the power supply capacity required by a terminal such as a remote controller connected to the communication connection means 3 is small,
By using the first connecting means 5, the internal power supply 9 is used to supply power, and a large number of terminals such as remote controllers are connected or system equipment 2 that requires a large amount of power.
When 0 is connected and exceeds the capacity of the internal power supply, it can be supplied by the external power supply 8 by using the second connecting means 7.

For example, when the system equipment 20 as shown in FIGS. 2 and 3 is connected, a large amount of electric power is required.

Next, FIGS. 2 and 3 show an example of the case where a system device requiring a large amount of power is connected. In FIG. 2, a remote controller and a TV are integrated, and a TV screen 30 is provided on the upper portion of the TV, and a power switch 3 for turning the TV on and off.
1, a channel switch 32, a volume switch 33, a brightness switch 34, and an internal speaker unit 3 for outputting a sound.
5 are provided. Below that is a remote control unit, which is a display unit 16 showing the setting state, a power switch 41 of the remote controller, a bath automatic switch 42 for fully automatically performing water filling, refilling, reheating, etc. in the bathtub. Switch 4 that is set to slightly thick or lukewarm
3, bathtub hot water temperature setting switch 44, bathtub hot water amount switch 4
5, a plenty switch 46 for supplying a sufficient amount of hot water, a temperature switch 47 for setting the temperature of the shower, and the like are provided. As a result, television broadcasting can be enjoyed with one device, and remote control of the water heater can be performed.

The configuration relating to the power supply of the system device 20 will be described with reference to FIG. This device is connected by a two-core signal line as in a normal remote controller, and a television section 30 is connected through a two-core signal line and a filter 21 inside the device. Therefore,
The television 30 has a filter 21 for a signal for remote control.
Therefore, only the power is supplied from the main body 1 side. On the other hand, the remote controller 22 is configured such that power is supplied from the main body side and a signal for remote operation or the like is transmitted.

When a system device requiring a large amount of power is connected as described above, it can be dealt with by connecting the second connecting means 7 to the external connecting means 4 on the main body side. The same applies when a large number of remote controllers are connected and used.

In the above embodiment, the first connecting means is constructed separately from the device body 1 and is connected by a connector or the like. However, it is simply constructed by a jumper and connected or not connected. Can also be However, there is an advantage that the connector can be easily attached and detached.

In the above embodiment, the first connecting means 5 and the second connecting means 7 are composed of three terminals.
The connecting means may be two terminals a and b, and the second connecting means may be two terminals b and c. However, if three terminals are used together, the parts can be used in common, and the wrong terminals can be prevented.

Further, in FIG. 1 of the above-mentioned embodiment, the internal power source 9 is connected regardless of the connection of the first or second connecting means.
Is used to supply power to the device body 1, but when the second connecting means 7 is connected, the device body 1
Alternatively, the power may be supplied from the external power supply 8. This can be realized by eliminating the power line 60 and connecting the power line of the terminal b of the external connection means 4 to the power line of the internal circuit of the device body 1.

[0028]

As described above, according to the present invention, a device which is operated by the electric power supplied from the power source,
An internal power source inside the device, an external power source outside the device, and a plurality of types can be connected, and the first connecting means is connected to supply power to the device by the internal power source. However, the external connection means provided to the device for supplying power to the device by the external power source by connecting the second connection means configured separately from the device. Therefore, when a large amount of power is needed, there is an effect that an external power supply can be used.

A device which is operated by electric power supplied from a power source and has at least three terminals (a, b, c), and the device side of the terminal a is provided inside the device. External connection means connected to an internal power source, connected to a power supply voltage line for operating the equipment on the equipment side of the terminal b, and connected to a ground line on the equipment side of the terminal c, and the external connection means. , At least two terminals (a,
b) and the terminal a and the terminal b are short-circuited with the first connecting means, or at least two terminals (b, c) are provided and an external device is provided between the terminals b and c. Since the second connecting means to which the power source is connected is selected and is in a connectable state, the first connecting means may be used when an internal power source alone can be used, and an external power source is required. In that case, the second connecting means may be used, and there is an effect that the internal power source and the external power source can be switched by simply exchanging the first connecting means and the second connecting means.

The water heater main body is provided with a remote controller which is connected to the water heater main body by a two-core signal line to supply power from the main body side and to transmit a signal. At least three terminals (a,
b, c), the main body side of the terminal a is connected to an internal power source provided therein, and the main body side of the terminal b is connected to the power source line side of the two-core signal line. An external connection means connected to the ground line on the main body side, and a first connection in which the external connection means has at least two terminals (a, b) and the terminals a and b are short-circuited. means,
Alternatively, a second connection means having at least two terminals (b, c) and having an external power supply connected between the terminals b and c is selected and is in a connectable state, and the remote controller and The two-core signal line to be connected is characterized by being able to supply power to another electronic device through the filter. Therefore, the two-core signal line supplies power to the electronic device through the filter and is required. Even if the power increases
There is an effect that power supply can be easily supported.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a configuration of the present invention.

FIG. 2 is an external view of an example of a system device.

FIG. 3 is an explanatory diagram of a power supply state.

FIG. 4 is an explanatory diagram of a conventional technique.

FIG. 5 is an explanatory diagram of a configuration of a conventional technique.

[Explanation of symbols]

 1 Main body of equipment such as water heater 2 Communication control means 3 Communication connection means 4 External connection means 5 First connection means 7 Second connection means 8 External power supply 9 Internal power supply 10 Main remote control 15 Flow remote control 20 System equipment 21 Filter 22 Remote Controller 30 television

Claims (3)

[Claims] 1. A device which is operated by electric power supplied from a power source, wherein the device can be connected to an internal power source inside the device, an external power source outside the device, and a plurality of types of devices. Is connected to the device to supply power to the equipment by the internal power supply, and the second connection means, which is formed separately from the equipment, is connected to supply power to the equipment from the external power supply. An external connection means provided to the device for supplying the power, and a power supply device. 2. A device operated by electric power supplied from a power source, said device having at least three terminals (a, b, c),
The device side of the terminal a is connected to an internal power supply provided inside the device, the device side of the terminal b is connected to a power supply voltage line for operating the device, and the device side of the terminal c is connected to a ground line. The connected external connection means, the external connection means has at least two terminals (a, b), and the first connection means in which the terminals a and b are short-circuited, or at least two terminals ( b), and a second connection means to which an external power source is connected between the terminals b and c is selected and is in a connectable state. 3. A water heater main body, and a remote controller which is connected to the water heater main body by a two-core signal line to supply power from the main body side and to transmit a signal. The main body of the container has at least three terminals (a, b, c), the main body side of the terminal a is connected to an internal power source provided therein, and the main body side of the terminal b has the two-core signal line. External connection means connected to the power supply line side of the terminal c and to the main body side of the terminal c to the ground line, and the external connection means has at least two terminals (a, b). Is selected from the first connection means short-circuited with or the second connection means having at least two terminals (b, c) and having an external power supply connected between the terminals b and c. Is in a connectable state and is connected to the remote controller 2 The power supply device, wherein the core signal line is in a state capable of supplying power to another electronic device through the filter.