KR102254002B1 - Power Switch for LED Light - Google Patents

Abstract

The present invention provides a power switch, which is economical and variously functional by: fundamentally blocking generation of arc by using a power switch performing a switching operation with a low DC power of 12 V or less without using a power voltage of AC 220 V; extending the lifespan of a variable resistor to largely extend the lifespan in accordance with use of a lighting switch; at the same time securing a minimum insulation distance to reduce the size of a switching module; and accordingly, including, in a standardized power switch, high-functional circuit elements with complex circuits having a dimming function or the like. The present invention provides the power switch for the LED lighting fixature, which prevents lowering of a power factor (PF) by matching an input current with an input voltage and prevents the occurrence of a time delay due to operational stabilization of the LED lighting fixture and avoids sudden voltage fluctuations by reducing total harmonic distortion (THD).

Description

Power Switch for LED Light{Power Switch for LED Light}

The present invention relates to a power switch for a lighting device using an LED, and more particularly, to a dimming switch for an LED having a function of a dimmer.

In a typical house or building, a light switch is installed on each interior wall to turn on and off lights such as incandescent and fluorescent lights.

Referring to FIG. 1, the lighting switch 10 is in a form in which one or three buttons 5 for turning on/off the lighting lamp are installed on the switch panel 3, and the back of the panel 3 is commercially available. Components for connecting AC power and turning on/off the switch are attached, so the overall size is standardized to have a size of 75*123*33.5mm in width*length*width. That is, it can be seen that the light switch 10 of the illustrated standard is a one-way switch and a three-way switch, and although not shown, a two-way switch having two switches mounted on the same panel 3 size is also possible. That is, the lighting switch 10 of the size shown in FIG. 1 is a form that can be used from 1 to 3 switches. In addition, the lighting switch 18 shown in FIG. 2 has the same length and width as the lighting switch 10 and the horizontal length is further extended to 121.4 mm, and as shown, simply turns on/off lighting such as an incandescent lamp or a fluorescent lamp. It can be used when installing a dimmer that enables dimming control of the lighting as well as turning off or when a number of switches are required.

As described above, in the case of the general switch 10 shown in Fig. 1, the conventional lighting switch can be used from 1 to 3 with a 75*123*33.5mm size switch panel, and 121.4*123 shown in FIG. *The 33.5mm size switch panel is designed to be used when a number of switches including a dimmer are requested.

In addition, since the dimmer controller 7 is only for dimming lighting and the rest of the lighting is controlled only by a general switch composed of a button 5, the linkage between the dimmer and the general switch was not possible.

The conventional circular rotary switch for dimmers shown above utilizes a variable resistor to gradually increase from the lowest illuminance state to the high state by turning it clockwise. The variable resistor contacts the carbon layer having the resistance value. As a result, the life of the power switch is influenced by the size of the voltage by controlling the power, so when using a relatively high voltage of AC 220V, there is a problem of reducing the life of the power switch due to arcing.

In addition, the switch of the AC input power has an on/off function using a contact point, inevitably generating an arc due to switching, so that the life of the power switch can be reduced by this arc, as well as circuit elements depending on the magnitude of the voltage. If AC 220V is used as the power supply of the power switch of the above standard because it is necessary to secure the minimum insulation distance, economic loss occurs because the power switch module is unnecessarily enlarged because a large circuit element with a capacity suitable for 220V is used. In order to have various functions using a wall-type or stand-type power switch, there is a limit to including a complex circuit element in a power switch of a standardized size.

Further, the LED lighting device is configured to include a capacitor configured to supply power to the dimming controller (or control circuit) during the off-time. However, such a conventional technology, since it is necessary to detect the operation state of the power switch, the circuit configuration is complicated, and it is necessary to include an energy charging/discharging element such as a capacitor for supplying the operation power to the dimming controller during the off-time. At the same time, it becomes difficult to miniaturize the LED lighting device, and the overall life of the LED lighting device is shortened due to the short lifetime of the capacitor, and the manufacturing cost is increased.

In addition, in this prior art, since the input power passes through the capacitor, which is the off-state power, the input current becomes inconsistent with the input voltage, resulting in a decrease in power factor (PF) and an increase in THD (Total Harmonic Distortion). When the power switch is turned on and the power is applied again, the dimming controller must first perform sensing operation, so there is a time delay in stabilizing the operation of the LED lighting device, and there is a risk of unstable operation due to sudden power fluctuations. There is a problem that it is high.

Korean Patent Registration No. 10-0940506 (January 28, 2010, integrated dimming switch) Korean Patent Registration No. 10-0993581 (November 4, 2010, lighting device equipped with a one-touch dimming switch)

delete

An object of the present invention for solving the above problems is to provide a dimming function of the LED lamp without using the conventional blocking method of blocking the AC voltage (AC) 220V applied to the lamp in the switch that cuts off the power of the LED lamp for lighting. By directly shutting off the power of the DC drive control circuit that controls the dimmer circuit to have a power source, arc generation can be fundamentally cut off by cutting off the low DC (DC) power supply of 12V or less. By extending the life of the variable resistor for a long time and minimizing the insulation distance required by the standard, the size of the switching module is reduced, and accordingly, a high-functional circuit device having a complex circuit such as a dimming function is further included in the standardized power switch box It is possible to include many electronic devices so as to increase economic efficiency according to size reduction and to enable various functions in a standardized switch.

In order to achieve the above object, the present invention provides a power switch to directly cut off the DC power of the control circuit that controls the switching element of the dimmer circuit instead of the switch that cuts off the power of the LED lamp connected to the AC power. By designing and configuring a power switch to directly turn on/off the control circuit that uses DC power of 12V or less by placing it between the power supply, the power supply and the control circuit, it is possible to cut off the dimming and power of the LED lamp. Provides a circuit configured to allow.

As described above, the present invention uses a power switch that switches using a low DC power of 12V or less without using the power supply voltage of AC 220V, thereby preventing arcing from occurring and extending the life of the variable resistor. The size of the switching module is reduced by significantly extending the lifespan of the device and securing the minimum insulation distance. Accordingly, it is possible to include a high-functional circuit device having a complex circuit including a dimming function in a standardized power switch, so it is economical and versatile. A power switch having a can be provided.

In addition, by matching the input current and the input voltage, PF (Power Factor) is prevented from deteriorating, and THD (Total Harmonic Distortion) is reduced to prevent the occurrence of time delay due to the stabilization of the operation of the LED lighting device, and rapid voltage fluctuations. There is no advantage to this.

1 is a power switch of the existing invention
Figure 2 is a power switch including a dimming switch of the existing invention
Figure 3 is a circuit configuration diagram including the power switch of the existing invention
4 is a circuit diagram of the power switch of the present invention designed after power supply
5 is a circuit diagram of the power switch and lamp of the present invention designed after power supply

The present invention is to directly cut off the DC power of the controller that controls the switching element of the dimmer circuit for dimming without using a switch that cuts off the AC 220V power for dimming and on/off of the LED lamp connected to the AC power source. By designing the circuit so that the power switch is located between the DC power generator, the power supply and the controller, the DC power input to the controller is directly cut off, or a separate switch is configured so that the controller can be turned on/off directly. It is possible to control the dimming of the lamp and turn off the power.

Further, according to the present invention, there is no need to detect the operating state of the power switch during the off-time of the LED lighting device, and thus, standby power can be minimized by placing the power switch in front of the control circuit so that the control circuit does not need to operate. By minimizing standby power, the overall lifespan of the LED lighting device is extended and the manufacturing cost is reduced. Since the input power does not pass through the capacitor, which is the off-state power, the input current matches the input voltage and the power factor (PF : Power factor) improves, THD (Total Harmonic Distortion) decreases, and even when the power switch is turned on and the power is applied again, there is no time delay in stabilizing the operation of the LED lighting device.

A power switch is a device that can be used without distinction between direct current (DC) and alternating current (AC), and has various advantages as the voltage to be cut off is lower. However, until now, the wall switch that blocks most of the lighting devices has caused the above various problems by cutting off AC 220V commercial power, which is AC, but by reducing the cutoff voltage to 12V or less according to the circuit design of the present invention, the above various problems are solved. And it became possible to add miniaturization and economy.

In addition, the power switch of 12V or less according to the present invention can be downsized by configuring any switch including a stand-type switch and a remote control switch as well as a power switch for a wall through circuit design.

Hereinafter, an embodiment according to the present invention will be described with reference to the accompanying drawings.

The circuit diagram shown in Fig. 3 is a diagram showing the power of all lighting systems and the lamp as a load. The power switch and the LED lamp as the load are installed by inputting AC power as AC power, and a dimming circuit is connected to the LED lamp to perform dimming control. It consists of a procedure.

However, as stated for the purpose of the present invention, the AC AC power source uses 220V as the power source, so there is a problem in that the lifespan of the arc generated by the switch when ON/OFF and the variable resistance operated at a high voltage decreases. It was invented to solve this problem, and the circuit was designed and configured as shown in FIG. 4.

As an embodiment, the LED lamp as a load of Fig. 4 is connected to AC AC power and connected to the dimming circuit to control dimming is the same as the conventional invention, but the power rectified by the rectifier is the DC-voltage supply. It is converted into DC power of 12V or less through a DC converter and serves as a power source for the control circuit. At this time, the power switch of the present invention is connected between the power supply, which is a DC voltage supply, and the control circuit to control the switching elements of the control circuit. By turning on/off, it acts as a switch that controls the control circuit as well as a power switch that cuts off the DC power supply of 12V or less.

The power switch has the function of turning on/off the power by a simple contact without distinction between AC and DC, and a power switch using a DC power supply with a low voltage of 12V or less enables economical, long life, and miniaturization as stated in the purpose. It is to do.

As another embodiment, as in the case of the above embodiment, a separate DC power switch can be turned on and off the switching element of the control circuit without installing a power switch between the DC voltage supply and the control circuit.

The switching element of the control circuit may be controlled using one of a FET, a transistor, a TRIAC, and a thyristor (SCR).

As another embodiment, the present invention improves the dimming compatibility and stability with an LED bulb of a phase control dimmer (dimmer) having a dimming control function as shown in FIG. 5 to reduce flicker and power loss. A dimming circuit that can exhibit good dimming characteristics while minimizing, and a full-wave rectified by connecting the existing AC voltage input LED lamp to the rear end of the power supply in order to turn on 100% of the lighting equipment without causing the above flicker. LED lighting device that provides a dimming circuit that can light up 100% even if the switching element triac or FET is short-circuited by applying a voltage to prevent flicker and use the LED lighting equipment completely at 100% full load. In the trailing-edge control dimmer for dimming, when the zero potential of the AC input voltage is detected through the zero crossing detection circuit, the switching element (FET) is turned on, and the switching element (FET) is turned on for the time set by the timer circuit. By maintaining and supplying power to the lighting equipment for a set period of time, the dimming circuit that controls the brightness of the lighting equipment and the switching element (FET) are supplied with power from the power supply even in the short-circuit state (SHORT) to completely light up without flickering. It is composed of MAINS AC, variable resistor (R1), resistor (R2), capacitor (C1), and LED lamp. In the Leading-edge control dimmer that conducts the triac by triggering the evil gate and continuously supplies voltage to the luminaire until the AC input voltage passes through the zero voltage, the TRIAC is 100% turned on. ) Both ends are in a short-circuit (SHORT) state, and even if the voltage of the dimmer circuit part is in a short-circuit (SHORT) state, power is supplied from the power supply so that it can be completely lit without flickering. Was.

delete

Claims (8)

In the power switch to turn on/on the dimming and power of the LED lamp,
With LED lamp
A rectifier that rectifies the AC voltage and
A zero crossing detection circuit for detecting the zero potential of the rectified voltage of the rectifier;
FET, a switching element that turns on when zero potential is detected,
A control circuit that adjusts the brightness of the LED lamp and
It is composed of a power supply supplying power to the control circuit,
The power switch is a power switch for an LED lighting device, characterized in that it cuts off a DC voltage of 12V or less by placing it in series between a power supply and a control circuit in order to minimize standby power and miniaturization when the LED lamp is off.
The method of claim 1,
The switching element of the control circuit is
Power switch for an LED lighting device, characterized in that consisting of using one of FET, transistor, triac (TRIAC), thyristor (SCR).
delete delete delete The method of claim 1,
The dimming circuit is a power switch for an LED lighting device, characterized in that the input current matches the input voltage to increase the power factor (PF).
The method of claim 1,
The dimming circuit reduces THD (Total Harmonic Distortion) and stabilizes without a time delay when the power switch is turned on.
The method of claim 1,
The LED lamp is a power switch for an LED lighting device, characterized in that the circuit is configured to be located between the power supply and the switching element (FET).

Images