JP3062963U - Tactile operation dimmer and its operation circuit - Google Patents

Abstract

(57) [Problem] A dimmer using a phase control circuit. In general, a method of generating a control voltage by a voltage dividing circuit using a sliding resistor is used. Wear and loss are inevitable, and there has been a problem with extremely frequent operations. SOLUTION: As a method of obtaining a control voltage, a dimming operation by a touch finger electrode is performed by charging / discharging a signal capacitor without using a resistance voltage dividing method.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a method of performing a dimming operation of a dimmer which is additionally used for an individual lighting lamp wiring cord or used as a fixed wiring device.

[0002]

[Prior art]

 Conventionally, dimming of incandescent lamps and the like is generally performed by using a thyristor element including a triac and changing the supply voltage.Here, the gate pulse to the triac, etc., is changed according to the command input voltage. An output phase control circuit is usually used. As the command input voltage, a circuit using a DC voltage or a time constant of a resistor and a capacitor is generally used. In this case, it is almost indispensable to use a variable resistor for dividing a voltage or changing a time constant.

[0003]

[Technology that the invention is trying to solve]

 When a variable resistor is used for voltage division or for changing the time constant as described in the prior art, the presence of mechanically movable and sliding parts is indispensable. Wear and wear of these parts were recognized as inevitable factors. Also, it has been unavoidable that the dimming operation section generally has a structure that protrudes from the surface of these containers. The purpose of the present invention is to improve these factors and introduce new elements in the external design and operation of equipment.

[0004]

[Means for solving the problem]

 In order to achieve the above object, in the present invention, a voltage between signal capacitor terminals obtained by charging and discharging a signal capacitor is used as a DC control signal supplied to a phase control circuit.

Further, as a driving DC power supply for the electronic control circuit section including the phase control circuit, a DC power obtained by directly rectifying an AC power supply used for lighting a lighting lamp and using a constant voltage diode or the like is used.

[0006] One electrode of the signal capacitor is connected to one electrode of a DC power supply for driving the electronic control circuit, for example, a negative electrode, and the other electrode is connected to the positive electrode of the DC power supply via an appropriate current limiting resistor. The voltage between the terminals is changed by charging and discharging by switching and connecting to the electrode or the negative electrode.

In order to perform a charge / discharge switching operation for the signal capacitor, two comparators using the DC power supply as a drive power supply are provided, and one of the comparators is connected to a positive-phase input and the other comparator is connected to a negative-phase input. An input command is input and both are driven at the same threshold level.

The output terminal of the positive-phase input comparator is connected to the charge / discharge terminal of a signal capacitor via a series circuit of a current limiting resistor and a diode. In this case, the diode has an anode at the output terminal of the comparator and a cathode at the signal terminal. Place in the direction facing the charge / discharge terminal of the capacitor. The output terminal of the negative-phase input comparator is connected to the charge / discharge terminal of the signal capacitor via a current limiting resistor and a diode in series, and the diode is connected to the charge / discharge terminal of the signal capacitor and the cathode is connected to the comparator. Place in the direction facing the output terminal.

The input of the operation command to each comparator is as follows. Two conductive electrodes (generally, a metal plate, etc.) are fixed to the outer surface of the container body made of an insulator such as plastic, and one electrode is connected to the positive-phase input of the positive-phase input comparator via a high impedance element, and the other is connected to the other. The electrode is also connected to the negative input of the negative input comparator via a high impedance element. When a finger touches one of the electrodes on the outer surface of the container, a weak induced current flows through the body through the human body, inverts the output of the corresponding comparator, and performs a charge / discharge switching operation to the signal capacitor.

[0010] When the fingers are not touching both electrodes, the charge / discharge current is blocked by the diode of each comparator output circuit, so that the voltage between the terminals of the signal capacitor remains constant without change.

[0011] The voltage of the signal capacitor is supplied to a phase control circuit as a control signal input through an appropriate buffer circuit to control dimming of the illumination lamp.

[0012] By repeating the frequency of touching the electrodes in small increments, it is possible to arbitrarily change the changing speed of the voltage between the terminals of the signal capacitor, that is, the changing speed of the dimming level of the illumination lamp.

[0013] In order to make the voltage holding time when the voltage between the terminals of the signal capacitor is not changed as long as possible, it is necessary to consider using a component having a small leakage current as much as possible for circuit components around the signal capacitor.

When the AC power supply for driving the illumination lamp is cut off and turned off, the DC power supply for driving the electronic circuit also goes to zero, so that the charge stored in the signal capacitor is discharged. The charging of the condenser always starts from zero, and the soft start of the lighting lamp can be guaranteed.

[0015]

[Embodiment]

 An embodiment of the invention will be described with reference to the drawings. FIG. 1 is a diagram showing a circuit diagram of a dimmer used in the present embodiment. In FIG. 1, terminals 1 and 2 are terminals for connecting an AC power supply for illumination, terminals 3 and 4 are terminals for connecting an illumination lamp 8, and a dimming output is obtained between these terminals. The terminals 5 and 6 are terminals for connecting the dimming operation touch finger electrodes 29 and 30, respectively, and a portion surrounded by a dashed line is a circuit portion forming a main portion of the present invention. Take the form to be accommodated in.

The connected AC power supply is terminated from a terminal 1 through a terminal 3 by a load circuit composed of a series circuit such as an illumination lamp 8, a terminal 4, and a triac 9.

A series circuit including a resistor 10, a diode 11, a constant voltage diode 12, and the like is connected between the terminals 1 and 2 in the arrangement shown in the figure, and a smoothing capacitor 13 is connected to the constant voltage diode 12 in parallel. A DC voltage obtained between both terminals of the constant voltage diode 12 is used as a power supply for driving the electronic circuit unit.

The phase control circuit 31 is a circuit provided with at least terminals such as a control voltage input, a control pulse output, and a drive power supply. Many products commercialized in the form of integrated circuit components and the like currently exist. . In this embodiment, for the sake of convenience, the point at which the control input voltage is equal to the negative level of the drive DC voltage is set to zero volt, at which point the control pulse output stops, and the control voltage input rises to the positive side of the drive DC voltage. As a result, the conduction gate pulse to the triac 9 gradually increases the conduction angle, and the conduction angle becomes 180 ° at a positive voltage level.

Further, one electrode of the signal capacitor 14 is connected to the negative side of the DC drive power supply, the other electrode is connected to the input of the buffer circuit 15, and the output terminal of the buffer circuit 15 is connected to the phase control circuit. 31 control voltage input terminal. A discharge diode 16 is connected between the input terminal of the buffer circuit 15 and the positive line of the driving DC power supply in such a direction that the former is an anode and the latter is a cathode.

Further, the comparators 17 and 18 are driven by the driving DC power supply, and the positive-phase input of the comparator 17 is connected to the negative line of the driving DC power supply by connecting a bias resistor 25 and via a high impedance element 27. Then, the terminal 5 is connected to the touch finger electrode 29 outside the container. Similarly, the negative-phase input of the comparator 18 is connected to the contact electrode 30 outside the container via the terminal 6 through the high impedance element 28 after connecting the bias resistor 26 to the negative line of the driving DC power supply. Make a connection. Both the negative phase input of the comparator 17 and the positive phase input of the comparator 18 give the same threshold voltage obtained by the voltage dividing resistors 23 and 24.

The output of the comparator 17 is connected to a connection point (hereinafter referred to as a buffer circuit input) between a signal capacitor 14 and an input of a buffer circuit 15 via a series circuit of a current limiting resistor 19 and a diode 20. Is connected to the input of the buffer circuit 15 via a series circuit of a current limiting resistor 21 and a diode 22. At this time, the diode 20 is arranged such that the anode faces the output side of the comparator 17 and the cathode faces the input side of the buffer circuit 15, and the diode 22 has the anode on the input side of the buffer circuit 15 and the cathode on the output side of the comparator 18. The arrangement should be facing.

In the above circuit, when the finger does not touch any of the touch finger electrodes 29 and 30, the output of the comparator 17 is low, the output of the comparator 18 is high, and the charge and discharge of the signal capacitor 14 are performed. Is not performed, and the charge voltage is maintained as it is.

When a finger touches the touch finger electrode 29, a weak induced current flows through the human body to the input circuit of the comparator 17, and the output of the comparator 17 is inverted. As a result, the current limiting resistor 19 and the diode 20 are connected to the signal capacitor 14. , The voltage between the terminals increases, the control input voltage of the phase control circuit 31 increases via the buffer circuit 15, and the dimming operation to increase the dimming level of the illumination lamp 8 can be performed. On the contrary, when a finger touches the touch finger electrode 30, the output of the comparator 18 is inverted, and the dimming of the illumination lamp 8 is sequentially performed by discharging the signal capacitor 14 and decreasing the control input voltage of the phase control circuit 31. Dimming operation to lower the level can be performed.

In the above operation, the method of adjusting the interval and frequency of touching the finger electrodes 29 and 30 and adjusting the charging / discharging time speed of the signal capacitor 14 to adjust the dimming change speed Can be done arbitrarily.

When the AC power supply is cut off to turn off the light, the drive DC power supply voltage becomes zero, and the charge of the signal capacitor 14 is discharged via the discharge diode 16. Since the soft start, in which the dimming level rises, is guaranteed, the life of incandescent lamps can be extended.

FIG. 2 shows a front external view and a partial cross-sectional view taken along the line A-A ′ of the embodiment of the tabletop touch finger operation dimmer using the dimmer circuit according to the present invention. In order to dissipate heat only from the triac 9 of the printed circuit board 7 containing the circuit portion shown in FIG. 1, it is attached to a metal heat dissipation plate 38, and the container 32 is made of a plastic or other insulating material using the support 32. Fixed housed. Further, an AC cord 35 with a plug is penetrated and fixed through a side wall of the container 33 and a cord bush 34. An AC outlet 36 is attached to another side wall of the container 33, and the finger electrodes 29, 30 are fixed to the surface of the container 33, which is the upper surface in a state where the container 33 is normally placed on a table, by bonding or the like.

The lead wires of the AC cord 35 with plug, the AC outlet 36, and the contact electrodes 29, 30 into the container 33 are the terminals 1, 2, 3, 4 and 5 of the printed circuit board 7, respectively. , 6. Further, it is preferable to provide a plurality of ventilation holes 37 on the side wall of the container 33 for cooling the heat radiation plate 38 in accordance with the capacity of the device.

In the above configuration, the AC cord 35 with a plug is inserted into an AC power outlet, and the cord plug for illuminating light to be used for dimming is inserted into the AC outlet 36, so that the user can operate the desktop with a touch finger. Arbitrary dimming operation can be performed.

FIG. 3 is a view showing the structure of a wall-embedded touch finger operation dimmer according to still another embodiment, and shows a front external view and a rear partial cross-sectional view. The metal heat radiating plate 38 on which the triac 9 is mounted also serves as a container for the printed circuit board 7 housed therein, and the printed circuit board 7 is fixedly held inside the heat radiating plate 38 by an appropriate support member 32. The heat radiating plate 38 is generally a U-shaped metal plate, and an insulating panel plate 42 made of plastic or the like is arranged on the U-shaped open surface, and the radiating plate 38 is fixed to the panel plate 42 with fixing screws 39. To fix it. The surface of the panel plate 42, which is opposite to the surface on which the heat radiating plate 38 is arranged, is the front surface of the panel, and the contact electrodes 29 and 30 are fixed to the front surface of the panel by bonding or the like, respectively. Introduce to the side. On the other hand, on the two opposing sides of the heat sink 38, two-pin connectors 40 and 41, respectively, which can connect a single wire of the indoor wiring with one touch, are provided, and the two electrodes of the two-pin connector 40 are connected to the terminals 1 and 2 of the printed circuit board 7. The two electrodes of the two-pin connector 41 are connected to the terminals 3 and 4 of the printed circuit board 7 respectively, and the lead wires of the touch finger electrodes 29 and 30 penetrating through the panel board 42 are connected to the terminals 5 and 6 of the printed circuit board 7 respectively. Connecting. An appropriate dustproof cover is provided on the two open surfaces of the U-shaped heat sink 38 facing each other.

With such a configuration, the portion of the heat sink 38 is accommodated in an indoor wiring box, and the panel plate 42 is installed in a state where the front surface of the panel plate 42 matches the wall surface of the building. By connecting the side wire to the lighting device side wire of the indoor wiring to the 2-pin connector 41, it becomes a wall-embedded touch finger operation dimmer which also has a fixed wiring device.

[0031]

[Effect of the invention]

 Since the present invention is configured as described above, the following effects can be obtained.

As described in the first aspect, since the operation section can be moved and the sliding section can be completely eliminated, abrasion and wear associated with the operation section can be eliminated, and the life of the device can be extended.

As described in claim 2 or claim 3, since the shape of the electrode can be arbitrarily set, the degree of freedom in designing the product configuration increases.

When restarting after turning off the light, a soft start can always be guaranteed, so that the life of the illumination lamp can be extended.

When used as a table-top type as described in claim 2, the dimming operation of the fingertip can provide a playability to the operation.

In the wall-embedded type as described in the third aspect, since the projection of the operation unit can be eliminated, an advantageous factor can be provided in terms of ergonomics and effective use of the space in the room. .

[0037]

[Brief description of the drawings]

FIG. 1 is a basic circuit diagram of a touch operation dimmer.

FIG. 2 is a diagram of an embodiment of a tabletop touch finger operation dimmer.

FIG. 3 is an illustration of an embodiment of an embedded touch finger dimmer.

[Explanation of symbols]

 14 Signal Condenser 15 Buffer Circuit 17, 18 Comparator 29, 30 Touch Electrode 31 Phase Control Circuit 35 AC Cord with Plug 36 AC Outlet 38 Heat Sink 40, 41 2-pin Connector

Claims (3)

[Utility model registration claims] An illumination lamp using a phase control circuit.
In the dimming control circuit that controls the energization by the triac 9 or the like, the voltage between the terminals of the signal capacitor 14 generated by the charge / discharge operation of the signal capacitor 14 is supplied as the control input voltage to the phase control circuit 31 via the buffer circuit 15. The outputs of the comparators 17 and 18 are connected to the positive electrode of the signal capacitor 14 in series with a current limiting resistor 19 and a diode 20, respectively.
And a discharge diode 16 connected between the positive terminal of the driving DC power supply and a positive-phase input to the comparator 17, a negative-phase input to the comparator 18, and the touch finger electrodes 29 and 30. Are connected via high impedance elements 27 and 28, respectively, and the driving DC power supply for these electronic circuit units is a circuit obtained by directly rectifying the driving AC power supply for the illumination lamp 8, and the dimmer of the touch operation dimmer is used. Light operation circuit. 2. An AC cord 35 with a plug and an AC outlet 36 are provided on the side wall of a container 33 made of an insulating material.
3. A table-top touch-operated dimmer accommodating the circuit of claim 1, wherein the touch-electrodes 29 and 30 are provided on three outer walls. 3. Two-pin connectors 40 and 41 are provided on two opposing surfaces of a heat sink 38 constituting a U-shaped container,
A panel 42 of an insulator is provided on one open surface of the U-shape,
2. An embedded touch-operated dimmer accommodating a circuit according to claim 1, wherein touch-sensitive electrodes 29 and 30 are provided on a surface of the panel plate 42 which is in front and back relation with the heat radiating plate 38.