KR20000000728A - Plug receptacle having timer therein - Google Patents

Abstract

PURPOSE: A plug receptacle has a digital timer therein, and controls a power Supply by using a continuous timer function, a flicker function, on-timer function, and off-timer function according to an operation of the digital timer. CONSTITUTION: A plug receptacle includes a power unit connected to a household main power plug receptacle, and outputting an input voltage and a constant voltage dropped to a predetermined level from the input voltage. A main controller receives a constant voltage applied from the power unit, and a reference clock generated from the reference clock generator, and entirely controls a system according to a predetermined program. A plurality of setting keys are connected to the main controller, are driven by the constant voltage, sets each function from the user. A display part displays a time information and a setting information. The display part and the plurality of setting keys are included in the operation panel. A timer having a connector controller for switching that the input voltage is provided to several connectors is included in the plug receptacle. the main controller performs a time counting function by using the reference clock generated from the reference clock generator. The user sets an operation mode about at least one connector through the plurality of setting keys. The operation mode is displayed on the display part. The main controller controls the connector controller according to the set operation mode, so that the input voltage is applied to at least one connector.

Description

Timer built-in outlet

The present invention relates to a timer-embedded outlet, and more particularly, a built-in digital timer in the outlet for connecting the power plug to receive commercial power supply to the electrical and electronic devices, continuous timer function and flicker function by the digital timer and The present invention relates to an outlet having a built-in timer for controlling whether power is supplied using an on timer function and an off timer function.

In recent years, advances in electronic technology have made possible the automation of factories, offices and homes (Factory Automation, Office Automation, Home Automation). In particular, the most common category of automation technology is the timer function of the electronic device. The timer function of the electronic device allows the device to be operated or stopped at the time set by the user, and functions of general household goods (washing machines, rice cookers, fans, air conditioners, etc.) and office automation products (computers, etc.) Significantly advanced.

However, according to the electronic device incorporating such a conventional timer, the following problem occurs.

In other words, an electronic device that performs a timer function has a built-in timer itself. The price of an electronic device with a built-in timer is higher than that of an electronic device without a built-in timer. Has the disadvantage of being used.

Accordingly, an object of the present invention is to solve such problems, and an object of the present invention is to embed a timer into an outlet to which a plug mounted in a device can be connected, so that the timer function can be performed even for a device that does not have a built-in timer. To provide a timer built-in outlet.

In addition, another object of the present invention is to provide a timer built-in outlet to selectively perform the continuous timer function and the flicker function and the on timer and off timer function through a timer built in the outlet.

In addition, another object of the present invention is to provide an independent timer function for each outlet of the multi-outlet, each outlet independently controls whether the power supply to the connected device corresponding to the preset timer function It provides a timer built-in outlet.

In addition, another object of the present invention is to provide a control method of a timer built-in outlet to control the setting and execution status of the continuous timer function, the flicker function, and the on timer function and the off timer function, respectively, through the above timer built-in outlet. Is in.

1A is a perspective view of a built-in timer according to an embodiment of the present invention;

Figure 1b is a perspective view of a built-in timer outlet according to another embodiment of the present invention,

FIG. 2 is a detailed view of the operation panel shown in FIGS. 1A and 1B;

3 is an internal circuit diagram of the timer-equipped outlet shown in FIGS. 1A and 1B.

<Description of the code | symbol about the principal part of drawing>

1, 1a, 1b: coupler 2: outlet body

3: operation panel 4: plug

5: lead 6: AM indicator

7: PM display section 8: time display section

9: output status display section 10: on timer display section

11: off timer display unit 12: operation mode display unit

13: Select / Set Key 14: Time Unit Setting Key

15: Minute Setup Key 16: Mode Setup Key

17: main control unit 18: power supply unit

19: connector control unit 20, 20a, 20b: connector

21: microprocessor 22: battery

23, 23a, 23b: photo coupler 24: switching unit

25: reference clock generator 26, 26a, 26b: switching transistor

27: crystal oscillator 28, 28a: resonant capacitor

29: first voltage drop element 30: second voltage drop element

P1 to P4: I / O terminals P5 to P12: Output terminals

P13 to P15: Control terminal

A feature of the present invention for achieving the above object is, in an outlet comprising at least one or more connectors: a power supply connected to the main power supply for home use, respectively outputting a constant voltage dropped from the input voltage and the input voltage to a predetermined level; levy; A main controller which receives the constant voltage supplied from the power supply unit and the reference clock generated by the reference clock generator, and controls the system as a whole according to a preset program; An operation panel connected to the main control unit, the operation panel including a plurality of setting keys arranged to set various functions that can be input by a user driven by a constant voltage, and a display unit for displaying time information and setting information; A timer including a connector controller for switching the input voltage to be supplied to the at least one connector according to the control signal of the main controller; The main control unit performs a visual counting function using the reference clock generated by the reference clock generator. The user sets an operation mode for at least one or more connectors through a plurality of setting keys, and sets a plurality of setting keys. The operation mode is displayed on the display unit, and the controller controls the connector control unit according to the set operation mode to individually control the input voltage to at least one connector.

The power supply unit may include an output terminal for outputting an input voltage supplied from a main power outlet; And a first step-down means for stepping down the input voltage to a constant voltage level.

Second step-down means for dropping the constant voltage to the battery voltage level; A battery for charging the battery voltage dropped by the second step-down means and discharging the charged voltage at the time of power failure to supply to the main controller and the operation panel; The current time counting function is performed by the main controller by receiving the discharged voltage from the battery, and the current time is displayed on the operation panel.

In addition, the main control unit stores the setting mode and the setting time set by the plurality of setting keys, performs the time counting function, compares the setting time with the present time, and generates a predetermined control signal corresponding to the set mode according to the result. An output microprocessor; And a switching unit controlling a switching operation of the connector controller in accordance with a predetermined control signal output from the microprocessor.

At this time, the switching unit is provided with a number corresponding to at least one or more connectors, and includes a plurality of switching elements for switching the constant voltage is supplied to the connector controller in accordance with each control signal output from the microprocessor.

The plurality of setting keys may further include: a selection / setting key for selecting and setting at least one connector; A time unit setting key for changing and setting the time unit; A minute unit setting key for changing and setting the minute unit; A mode setting key for setting a function of a timer; The On / Off Timer, On-Off Repeat Timer, and Continuous Timer functions can be selectively set using the Select / Set Key, Hour, and Minutes.

The display unit may further include: a time display unit displaying a current time and a set time; A connector display unit for displaying at least one connector setting and operation state; An on timer display unit indicating that the on timer is operating for at least one connector; An off timer display unit for indicating that an off timer is operating for at least one connector; And a mode display unit for indicating that the continuous timer function and the on-off repeat timer function are set for each of the at least one connector.

In addition, the connector control unit may be connected to the at least one connector to have a one-to-one correspondence, and includes a plurality of control elements for switching the input voltage is supplied to each connector by receiving a constant voltage supplied through a plurality of switching elements.

At this time, the plurality of control elements are composed of a photodiode that emits light by a constant voltage supplied from each of the plurality of switching elements, and a phototransistor that is switched by light output from the photodiode and controls the input voltage to be supplied to each connector. A photo coupler.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are displayed on different drawings. In addition, in the following description there are shown a number of specific details, such as components of the specific circuit, which are provided only to help a more general understanding of the present invention that the present invention may be practiced without these specific details. It is self-evident to those of ordinary knowledge in Esau. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Figure 1a is a perspective view of a timer built-in outlet according to an embodiment of the present invention, Figure 1b is a perspective view of a timer built-in outlet according to another embodiment of the present invention, Figure 2a and Figure 1b A detailed view of the operation panel shown in FIG. 3 is shown, and FIG. 3 shows an internal circuit diagram of the timer-equipped outlet shown in FIGS. 1A and 1B. 1 to 3, the number of plugs that can be connected to the multi-outlet is limited to three. Therefore, the number of outlets of the multi-outlet is assumed to be three. However, it is known in advance that the number of outlets of the multi-outlet can be set to the maximum number of plugs that the microprocessor to be described later can accommodate.

First, referring to FIG. 1, the outlet body 2 including at least one or more plug couplers 1, 1a and 1b to which at least one or more plugs are connected may be related to a current time, an on time, an off time, and a timer. At the same time as setting various functions, an operation panel 3 for displaying the setting state is attached.

Then, one side of the outlet body 2 is connected to a plug (4) connected to the outlet (not shown) to which commercial power is supplied by the lead 5 (see Fig. 1a), or the outlet body (2) Attached directly to the phase (see FIG. 1B).

Meanwhile, as shown in FIG. 2, the operation panel 3 includes AM and PM display units 6 and 7 capable of distinguishing AM and PM, and a 7-segment 7 capable of displaying a current time and a set time. -Segment) time display section 8, an output status display section 9 for displaying a connector which is performing an arbitrary setting mode among a plurality of connectors, and an on-state for displaying a connector in which a timer is currently on, among a plurality of connectors. The timer display unit 10, an off-timer display unit 11 for displaying a connector which is currently performing an off-timer among a plurality of connectors, and a state in which a continuous timer function and a flicker timer function are being performed for each of the plurality of connectors. And an operation mode display unit 12 for displaying.

In addition, a selection / setting key 13 for selecting an arbitrary connector for setting the current time and timer function, an hour unit setting key 14 for setting the time unit, and a minute unit setting key for setting the minute unit (15) and a mode setting key 16 for selecting various timer functions.

Meanwhile, referring to FIG. 3, the internal circuit of the timer-embedded outlet will be described as follows.

The timer-equipped outlet shown in FIG. 3 is divided into a main controller 17, an operation panel 3, a power supply unit 18, a connector controller 19, and a connector 20, 20a, 20b. Can be distinguished.

First, the main control unit 17 is usually composed of an 8-bit microprocessor 21, and controls the overall function of the timer. In addition, the main control unit 17 manages the time set for each connector 20, 20a, 20b, manages the display state of the operation panel 3, processes signals input from various setting keys, and the connector control unit ( A predetermined control signal is output to 19).

As described with reference to FIG. 2, the operation panel 3 includes respective display sections 6-12 for displaying the overall operation of the outlet so that the user can easily recognize the operation panel. Each setting key 13 to 16 is provided to correct and confirm and to set a method of using the timer.

The power supply unit 18 supplies power so that the outlet can be operated in a normal and stable manner. In addition, the power supply unit 18 includes a power failure compensation battery 22 to ensure the function of the timer during power failure.

The connector controller 19 receives the control signal from the main controller 17 and switches the power supply to each of the connectors 20, 20a, and 20b. In the present invention, the switching means is shown assuming the photo coupler (23, 23a, 23b), it turns out that it can be replaced by other means (relay, etc.).

In more detail with respect to such a configuration, first, the main control unit 17 controls the switching state of the connector control unit 19 by the 8-bit microprocessor 21 and the control signal output from the microprocessor 21. The switching unit 24 and the reference clock generator 25 for generating a reference clock provided to the microprocessor 21. Here, the main control unit 17 receives an operation signal from various setting keys 13 to 16 on the operation panel 3 and controls various display states displayed on the display units 6 to 12 on the operation panel 3. Input / output terminals P1 to P4 and output terminals P5 to P12 for outputting control signals are assigned, and control terminals P13 to P15 for controlling the switching state of the switching unit 24 are included. In addition, the switching unit 24 includes a plurality of switching transistors 26, 26a and 26b so as to correspond one-to-one to the plurality of connectors 20, 20a and 20b, and each of the switching transistors 26, 26a and 26b. The base terminal of switches the supply of the constant voltage Vcc supplied from the power supply unit 18 to the connector controller 19 by the control signal supplied from the control terminals P13 to P15 of the microprocessor 21. In addition, the reference clock generator 25 includes a crystal oscillator 27 and resonant capacitors 28 and 28a to generate an oscillation frequency corresponding to the resonant frequencies of the resonant capacitors 28 and 28a.

The operation panel 3 includes a plurality of setting keys 13 to 16 connected to the input / output terminals P1 to P4 of the microprocessor 21, and output terminals P5 to P12 of the microprocessor 21. It is connected to the display unit and includes a display unit (6-12) for displaying the operation state of the timer. At this time, the plurality of setting keys 13 to 16 have a selection / setting key 13 for selecting an optional connector 20, 20a, 20b for setting the current time and timer function, and a time unit for setting the time unit. A setting key 14, a minute setting key 15 for setting the minute unit, and a mode setting key 16 for selecting various timer functions are included.

The power supply unit 18 supplies AC commercial power (eg, 220V) to the connector controller 19, and supplies power for power failure compensation to the microprocessor 21 so that a timer can perform a basic time counting function during power failure. The battery 22 for supplying the electrostatic compensation power supply to the display units 6 to 12 is built in so as to maintain the display state of the display units 6 to 12. That is, the battery 22 maintains the charging state while the AC commercial power is supplied, and the electrostatic compensation power charged in the battery 22 is supplied to the microprocessor 21 and the display units 6-12, respectively, during power failure. Only basic time counting functions are performed. Accordingly, even in a power failure, the timer may perform a basic time counting operation.

The connector controller 19 is switched according to a control signal supplied from the switching unit 24 to control the AC commercial power supplied from the power supply unit 18 to be supplied to the plurality of connectors 20, 20a, and 20b, respectively. Each of the switching transistors 26, 26a, 26b in the 24, and the photo couplers 23, 23a, 23b connected to the plurality of connectors 20, 20a, 20b in one-to-one correspondence.

Referring to the operation of the present invention having such a configuration as follows.

When the user connects the timer built-in capacitor (or multi-capacitor) to the main capacitor to which commercial power is supplied, the AC commercial power (for example, 220V) output from the power supply unit 18 is connected to each photo coupler 23 in the connector control unit 19. 23a, 23b), respectively. At the same time, the AC commercial power output from the power supply unit 18 is rectified and smoothed by the first voltage drop element 29, and the voltage is lowered to the constant voltage level (VCC: 5.12V) and then supplied to each component in the system. The battery 22 is charged after rectifying and smoothing by the second voltage drop element 30 and the voltage drop to the battery voltage level VB (for example, 3.6V).

The constant voltage VCC supplied from the power supply unit 18 operates the microprocessor 21, and the microprocessor 21 operates a timer according to a set program. As a result, time information is displayed on the display units 6 to 12. At this time, when the constant voltage VCC is supplied to the display portions 6 to 12, all the states are displayed on the display portions 6 to 12. After a predetermined time has elapsed, the time display of " 00: 00 " Only letters of "output", "ON", "OFF", and "MODE" are displayed. This display state indicates that the current time and timer function are not set.

When the current time is 10:30 am, the user first inputs the mode setting key 16 to set the current time. The operation signal of the mode setting key 16 is provided to the microprocessor 21, which causes the display sections 6-12 to blink the display state of "00:00" in units of a predetermined time (for example, 0.5 seconds). .

Thereafter, the user sets the display state of the display sections 6 to 12 to " AM 10: 30 " by using the time setting key 14 and the minute setting key 15. FIG. When this operation is completed, the user enters the mode setting key 16, and thus the changed current time is set. At this time, in order to indicate that the timer is operating, the ": " display on the display units 6 to 12 blinks in units of 1 second.

Next, a time setting process for each connector will be described. For example, a store uses a built-in timer condenser, connects an outdoor signboard (lights up at 6 pm and turns off at 12 pm) to the first connector, and uses a fan for indoor ventilation (5 minutes every 30 minutes) to the second connector. ), And if it is assumed that a refrigerator (continuously supplying power) is connected to the third connector, each connector can be set through the following setting process.

(1) Setting of the first connector (on timer function and off timer function)

The user selects the mode setting key 16. The operation signal of the mode setting key 16 is provided to the microprocessor 21, which causes the display sections 6-12 to blink the display state of "00:00" in units of a predetermined time (for example, 0.5 seconds). .

Thereafter, the selection / setting key 13 is inputted once so that " C1 " of the " output " display flashes. Then, the mode setting key 16 is input to turn ON the " ON " under " C1 ", and the " PM " and " 6: 00 " Next, the mode setting key 16 is input to turn on " OFF " under " C1 ", and the " PM " and " 12: 00 " Thereafter, the mode setting key 16 is selected to display "T" indicating the continuous timer function on the "MODE" display, and finally, the selection / setting key 13 is inputted to complete the setting of the first connector 20. do.

When the setting process is completed, the microprocessor 21 compares the current time with the set time (6 pm and 12 pm), and if the current time is 6 pm, a logic "high" signal from the control terminal P13. Outputs The logic " high " signal output from the control terminal P13 of the microprocessor 21 turns on the switching transistor 26 in the switching section 24, and accordingly, the constant voltage supplied from the power supply section 18 VCC) is supplied to the photo coupler 23 configured in the connector control unit 19. When the constant voltage VCC is supplied to the photo coupler 23, the photo coupler 23 is turned on, and thus, a 220 V AC commercial voltage supplied from the power supply unit 18 is supplied to the first connector 20. Therefore, the outdoor signboard connected to the first connector 20 automatically turns on at 6 pm.

In addition, the microprocessor 21 continuously outputs a control signal in a logic " high " state to the switching unit 24 through the control terminal P13, and determines whether the current time is 12 pm. Here, when it is determined that the current time is 12 pm, the microprocessor 21 outputs a control signal of a logic "low" state to the switching unit 24 through the control terminal P13. The control signal in the logic " low " state output from the control terminal P13 of the microprocessor 21 turns off the switching transistor 26 in the switching section 24, and thus is supplied from the power supply section 18. The set constant voltage VCC is no longer supplied to the photo coupler 23 configured in the connector control unit 19. When the constant voltage VCC supplied to the photo coupler 23 is cut off, the photo coupler 23 is turned off, so that the AC commercial voltage of 220 V supplied from the power supply unit 18 is no longer supplied to the first connector 20. Not supplied Therefore, the outdoor sign connected to the first connector 20 is automatically turned off at 12 pm.

(2) Setting of the second connector (flicker function)

The user selects the mode setting key 16. The operation signal of the mode setting key 16 is provided to the microprocessor 21, which causes the display sections 6-12 to blink the display state of "00:00" in units of a predetermined time (for example, 0.5 seconds). .

Thereafter, the select / set key 13 is input twice so that " C2 " Then, the mode setting key 16 is input to light up " ON " under " C2 ", and the minute setting key 15 is operated to set 00:30 to be displayed. ) To turn on the "OFF" under "C2", and set the display to display "00:05" by operating the minute setting key 15. Then, select the mode setting key 16 and select "MODE". "F" indicating the flicker function is displayed on the display, and finally, the selection / setting key 13 is inputted to complete the setting of the second connector 20a.

When the setting process is completed, the microprocessor 21 starts a counting operation from the current time, compares the counted time with the set time (30 minutes), and if the counted time is 30 minutes, the logic from the control terminal P14 is determined. Outputs a "high" signal. The logic " high " signal output from the control terminal P14 of the microprocessor 21 turns on the switching transistor 26a in the switching section 24, and thus, the constant voltage supplied from the power supply section 18 VCC) is supplied to the photo coupler 23a configured in the connector control unit 19. When the constant voltage VCC is supplied to the photo coupler 23a, the photo coupler 23a is turned on, and thus, a 220 V AC commercial voltage supplied from the power supply unit 18 is supplied to the second connector 20a. Therefore, the indoor ventilation fan connected to the 2nd connector 20a is operated.

In addition, the microprocessor 21 continuously outputs a control signal in a logic " high " state to the switching unit 24 through the control terminal P14, resets the counting operation, and then performs the counting operation again. At this time, it is checked whether the counted time has passed the set time (5 minutes), and if it is determined that the counting time has passed 5 minutes, the microprocessor 21 controls the logic " low " state through the control terminal P14. The signal is output to the switching unit 24. The control signal in the logic " low " state output from the control terminal P14 of the microprocessor 21 turns off the switching transistor 26a in the switching section 24, and thus is supplied from the power supply section 18. The set constant voltage VCC is no longer supplied to the photo coupler 23a configured in the connector control unit 19. When the constant voltage VCC supplied to the photo coupler 23a is cut off, the photo coupler 23a is turned off, whereby the AC commercial voltage of 220 V supplied from the power supply unit 18 is no longer supplied to the second connector 20a. Not supplied Therefore, the indoor ventilation fan connected to the 2nd connector 20a is automatically stopped 5 minutes after the starting point. In addition, after the indoor ventilation fan is stopped, the counting is reset, and the counter is counted again for 30 minutes through the above process, and as the above process is repeatedly performed, the indoor ventilation fan repeatedly starts and stops. Perform.

(3) Setting of third connector (continuous timer function)

The user selects the mode setting key 16. The operation signal of the mode setting key 16 is provided to the microprocessor 21, which causes the display sections 6-12 to blink the display state of "00:00" in units of a predetermined time (for example, 0.5 seconds). .

Thereafter, the select / set key 13 is input three times so that "C3" of the "output" display blinks. Then, the mode setting key 16 is input to turn ON the " ON " under " C3 ", and the " 00: 00 " is displayed by operating the time unit setting key 14 and the minute unit setting key 15. do. Next, the mode setting key 16 is input to display "T" indicating the continuous timer function on the "MODE" display. Finally, the selection / setting key 13 is input to complete the setting of the third connector 20b. do.

When this setting process is finished, the microprocessor 21 outputs a logic "high" signal from the control terminal P15. The logic " high " signal output from the control terminal P15 of the microprocessor 21 turns on the switching transistor 26b in the switching section 24, and accordingly, the constant voltage supplied from the power supply section 18 VCC) is supplied to the photo coupler 23b configured in the connector control unit 19. When the constant voltage VCC is supplied to the photo coupler 23b, the photo coupler 23b is turned on, and thus, a 220 V AC commercial voltage supplied from the power supply unit 18 is supplied to the third connector 20b. Therefore, the refrigerator connected to the 3rd connector 20b starts up automatically from a set time. At this time, since the continuous timer function is set in the third connector 20b, an AC commercial voltage of 220 V is continuously supplied to the third connector 20b unless the user changes the setting contents.

On the other hand, during a power failure, the battery voltage charged in the battery 22 is discharged and supplied to the microprocessor 21 and the display units 6 to 12, respectively, to perform a basic time counting function through the microprocessor 21 and at the same time, the display unit. By displaying the current time at 6 to 12, it is not necessary to reset the current time even when the power failure is reset, and the timer can perform a normal function according to the preset setting state even after the power failure is reset.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As a result, according to the timer-embedded capacitor according to the present invention the following advantages occur.

First, by embedding a timer in an outlet to which a plug mounted in the device can be connected, the timer function can be performed even for a device that does not have a built-in timer.

Second, the timer built into the outlet can selectively perform the continuous timer function and the flicker function and the on timer and off timer functions.

Third, independent timer functions are provided to each outlet of the multi-outlet, so that each outlet can independently control whether power is supplied to a connected device in response to a preset timer function.

Fourth, by performing the basic time counting function through the backup battery and displaying the current time, it is not necessary to reset the current time even in the event of power failure, and the timer performs the normal function according to the preset setting even after the power failure. can do.

Claims (9)

In an outlet comprising at least one connector: A power supply unit connected to the home main power outlet for outputting an input voltage and a constant voltage dropped from the input voltage to a predetermined level; A main controller which receives the constant voltage supplied from the power supply unit and the reference clock generated by the reference clock generator, and controls the system as a whole according to a preset program; An operation panel connected to the main control unit, the operation panel including a plurality of setting keys arranged to set various functions input by the constant voltage to be input by the user, and a display unit for displaying time information and setting information; And A timer is built in the outlet including a connector controller for switching the input voltage to be supplied to the at least one connector according to a control signal of the main controller; The main control unit performs a visual counting function using the reference clock generated by the reference clock generator, and a user sets an operation mode for the at least one connector through the plurality of setting keys, respectively. Display the operation mode set through the two setting keys on the display unit, and control the connector control unit according to the set operation mode to individually control the supply of the input voltage to the at least one connector. Timer built-in outlet. The method of claim 1, wherein the power supply unit, An output terminal for outputting the input voltage supplied from the main power outlet; And And a first step-down means for stepping down the input voltage to the constant voltage level. The method according to claim 1 or 2, Second step-down means for dropping the constant voltage to a battery voltage level; And A battery for charging the battery voltage lowered by the second step-down means and discharging the charged voltage at the time of power failure to be supplied to the main controller and the operation panel; Receiving a voltage discharged from the battery, the main control unit performs a current time counting function, and the timer built-in outlet, characterized in that to display the current time on the operation panel. The method of claim 1, wherein the main control unit, A micro to store the setting mode and the setting time set by the plurality of setting keys, perform a time counting function, compare the setting time with the present time, and output a predetermined control signal corresponding to the set mode according to the result. A processor; And And a switching unit for controlling a switching operation of the connector controller in accordance with the predetermined control signal output from the microprocessor. The method of claim 4, wherein the switching unit, And a plurality of switching elements installed in a number corresponding to the at least one connector and switching the constant voltage supplied to the connector control unit according to each control signal output from the microprocessor. The method of claim 1, wherein the plurality of setting keys, A selection / setting key for selecting and setting the at least one connector; A time unit setting key for changing and setting the time unit; A minute unit setting key for changing and setting the minute unit; And A mode setting key for setting a function of a timer; The on / off timer, the on-off repeat timer function and the continuous timer function can be selectively set using the selection / setting key, the hourly unit setting key, the minute unit setting key, and the mode setting key. Timer built-in outlet, characterized in that. The method of claim 1 or 6, wherein the display unit, A time display unit displaying a current time and a set time; A connector display unit configured to display setting and operation states of the at least one connector; An on timer display unit displaying an on timer for each of the at least one connector; An off timer display unit indicating that an off timer is operated for each of the at least one connector; And And a mode indicator configured to indicate that a continuous timer function and an on-off repeat timer function are set for each of the at least one connector. The method according to claim 1 or 5, wherein the connector control unit, And a plurality of control elements connected to the at least one connector in a one-to-one correspondence, and configured to switch the input voltage to be supplied to the respective connector by receiving a constant voltage supplied through the plurality of switching elements. The method of claim 8, wherein the plurality of control elements, A photocoupler comprising a photodiode emitting light by a constant voltage supplied from the plurality of switching elements, and a phototransistor switched by light output from the photodiode and controlling the input voltage to be supplied to each connector. Condenser with built-in timer.