JP2005071876A - Switch fittings - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce power consumption at the power supply circuit part, make radiation measures easy or unnecessary, and reduce cost. <P>SOLUTION: A switch fittings is constituted by connecting a switch (opening/closing element 5) and a light-emitting circuit part 6 in series between a pair of terminal parts 4, 4 to which the voltage from a power supply AC is applied via a loading LD in series. The light-emitting circuit part 6 is provided with a power supply circuit part 61 to obtain a prescribed voltage from the power supply AC, and a boosting circuit 62 which boosts the voltage obtained in the power supply circuit 61 and which is constituted of a capacitor C62 and a diode D62 in series between the switch connected to the one terminal part 4 and other terminal parts 4 in parallel connection, and provided with a light-emitting diode LED to emit light by the voltage obtained by means that both end voltage of the capacitor C62 is superimposed to a prescribed voltage. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a switch device including a pair of terminal portions to which a voltage from an AC power supply is applied via a load in series, and a switch and a light emitting circuit portion connected in series between the pair of terminal portions. It is.

  FIG. 13 is a configuration diagram of a conventional switch device. The switch device 1 shown in this figure includes a pair of terminal portions 4 and 4 to which a voltage from a power source (commercial power supply) AC is applied via a load LD in series, and between the pair of terminal portions 4 and 4. The switch SW and the light emitting circuit section 6 are connected in series.

  The light emitting circuit unit 6 includes a power supply circuit unit 61 configured by further connecting a diode D61 in the forward direction between a pair of DC output terminals T612 and T612 of a diode bridge composed of four diodes D61, and an antiparallel light emitting diode. There is provided a load circuit section 63 constituted by LEDs, LEDs, and a resistor R63 connected in series therewith.

  In the switch device 1 having such a configuration, when the switch SW is closed, a voltage is generated at both ends of the power supply circuit unit 61 and is applied to the load circuit unit 63, whereby the light emitting diodes LED of the load circuit unit 63 are alternately switched. It can be lit to indicate that the load LD is in operation. For example, if the forward ON voltage of each diode D61 of the power supply circuit unit 61 is about 0.7V and the forward voltage of the light emitting diode is 1.5V, 0.6V (= 0.7 × 3-1.5). ) Is applied to the resistor R63, and a current having a value obtained by dividing the voltage by the resistance value of the resistor R63 flows through the light emitting diode.

  Conventionally, as shown in FIG. 14, a power supply circuit unit 61 constituted by a transformer (current transformer) T61 may be used instead of a diode configuration. In this configuration, a predetermined voltage is induced on the secondary side of the secondary winding n2 in proportion to the primary current flowing through the primary winding n1.

Patent Document 1 describes a light emitting diode driving circuit configured to connect a light emitting diode between DC output terminals of a bridge circuit.
JP 2000-101144 A

  However, in the circuit configuration of FIG. 13, in order to turn on the light emitting diode (LED), a certain high voltage must be generated at both ends of the power supply circuit unit 61 including the five diodes D61. Power consumption could not be reduced. For example, when the rated current value is 500 mA, the power consumption in the power supply circuit unit 61 is 1.05 W (= 0.7 × 3 × 0.5), and it is necessary to provide a heat radiating plate and a heat radiating hole. It becomes a factor of high cost. Further, when the maximum current value increases, the power consumption in the power supply circuit unit 61 increases and the internal temperature rises. Therefore, the rated current value must be set to a small value after all, and the user is restricted from using the load. Was supposed to impose.

  On the other hand, in the circuit configuration of FIG. 14, since the light emitting diode cannot be turned on unless the primary current is sufficiently large, the number of turns of the primary winding cannot be reduced, and the transformer T61 that constitutes the power supply circuit unit 61. Cannot be downsized, and the temperature increases due to its large size. That is, in order to reduce the size of the transformer T61 or suppress the temperature rise, the power consumption in the power supply circuit unit 61 constituted by the transformer T61 cannot be reduced except for reducing the rated current value.

  The present invention has been made in view of the above circumstances, and provides a switch device that can reduce power consumption in a power supply circuit unit, can easily or eliminate a heat dissipation measure, and can reduce costs. With the goal.

  The invention according to claim 1 for solving the above-described problem includes a pair of terminal portions to which a voltage from an AC power source is applied via a load in series, and a switch, a light emitting circuit portion, and the like between the pair of terminal portions. The light emitting circuit unit is connected between the switch connected to one of the pair of terminal units and the other terminal unit from the AC power source. A power supply circuit unit that obtains a predetermined voltage and a booster circuit unit that is configured by a series capacitor and diode and boosts the voltage obtained by the power supply circuit unit are connected in parallel. A light emitting diode that emits light at a voltage obtained by superimposing on a predetermined voltage is provided.

  In this configuration, when the switch is closed, a predetermined voltage is obtained in the power supply circuit unit, and the predetermined voltage is applied to the booster circuit unit and a forward current flows in the diode of the booster circuit unit in a certain half cycle of the AC power supply. In this case, the capacitor of the booster circuit unit is charged with a voltage obtained by subtracting the forward ON voltage of the diode from a predetermined voltage, and in the next half cycle of the AC power source, the voltage across the charged capacitor is determined to be a predetermined voltage. Since the voltage is applied to the light emitting diode while being superimposed on the voltage, the light emitting diode can emit light even if the predetermined voltage is low. As a result, the predetermined voltage can be lowered, so that power consumption in the power supply circuit unit can be reduced, heat dissipation measures can be easily or unnecessary, and costs can be reduced.

  According to a second aspect of the present invention, in the switch device according to the first aspect, the power supply circuit unit includes a pair of AC input terminals connected between the switch and the other terminal unit in a state where the pair of DC output terminals are short-circuited. The diode of the booster circuit unit is a predetermined diode having a forward ON voltage lower than each diode constituting the diode bridge, and the light emitting diode is connected to the predetermined diode. It is connected in antiparallel. In this configuration, when the switch is closed, a voltage from an AC power source is applied to a pair of AC input terminals of the diode bridge, thereby generating a forward ON voltage in each of the pair of diodes connected in series. The sum of the forward ON voltages is lower than that in the case where a diode is further connected in the forward direction between the pair of DC output terminals of the diode bridge. When a forward current flows through a predetermined diode by applying the sum voltage from the boost circuit unit, the capacitor of the boost circuit unit is charged with a voltage obtained by subtracting the forward ON voltage of the predetermined diode from the sum voltage. In the next half cycle of the AC power supply, the voltage across the charged capacitor is superimposed on the sum voltage of another pair of diodes to emit light. It means to be applied to the diode, can be the sum voltage causes the light emitting diode even lower. In particular, the voltage applied to the light emitting diode can be further increased by using a predetermined diode whose forward on-voltage is lower than each diode constituting the diode bridge, so that the light emitting diode can emit light more brightly. it can.

  According to a third aspect of the present invention, in the switch device according to the first aspect, the power supply circuit unit includes a pair of AC input terminals connected to the switch and the other terminal unit in a state where the pair of DC output terminals are short-circuited. The booster circuit unit is configured by connecting the series capacitors and diodes in two sets in parallel and arranging the sets of capacitors and diodes in different order. Each of the diodes in the booster circuit unit is a predetermined diode having a forward on-voltage lower than that of each of the diodes constituting the diode bridge, and the light emitting diode is a set of capacitors and diodes in the booster circuit unit. Between each diode of the booster circuit section and the connection point of the other set of capacitors and diodes. Characterized in that it is connected in a de and forward. In this configuration, when the switch is closed, a voltage from an AC power source is applied to a pair of AC input terminals of the diode bridge, so that a forward ON voltage is generated in each of the pair of diodes connected in series. The sum of the forward ON voltages is lower than that in the case where a diode is further connected in the forward direction between the pair of DC output terminals of the diode bridge. Is applied to the booster circuit unit and a forward current flows through each predetermined diode, each capacitor of the booster circuit unit generates a forward on-voltage of the predetermined diode connected in series from the sum voltage. It will be charged with the subtracted voltage, and in the next half cycle of the AC power supply, the voltage across each charged capacitor is caused by another pair of diodes. It means to be applied to the light-emitting diode is superimposed on the voltage, it can be the sum voltage causes the light emitting diode even lower. In particular, the voltage applied to the light emitting diode can be further increased by using a predetermined diode whose forward on-voltage is lower than each diode constituting the diode bridge, so that the light emitting diode can emit light more brightly. In addition, since the voltage across each capacitor is superimposed on the sum voltage of the pair of diodes, the light emitting diode can emit light brighter than the switch device according to claim 2.

  According to a fourth aspect of the present invention, in the switch device according to the first aspect, the power supply circuit unit is configured by connecting two pairs of diodes connected in series so as to be in the forward direction in reverse parallel, The diode of the booster circuit unit is a predetermined diode whose forward on-voltage is lower than each diode constituting the power supply circuit unit, and the light emitting diode is connected in antiparallel with the predetermined diode. To do. In this configuration, when the switch is closed, a voltage from the AC power supply is applied to each pair of diodes in the power supply circuit unit, so that a forward on-voltage is generated in each of the pair of diodes. The sum voltage of the direction ON voltage is lower than that in the case where the power supply circuit unit is configured by a diode bridge and a diode connected in a forward direction between the pair of DC output terminals. When a sum voltage from a pair of diodes is applied to the booster circuit unit and a forward current flows through the predetermined diode, the capacitor of the booster circuit unit subtracts the forward on-voltage of the predetermined diode from the sum voltage. The voltage across the charged capacitor is summed by another pair of diodes in the next half cycle of the AC power supply. It means to be applied to the light-emitting diode by superimposing the pressure can be the sum voltage causes the light emitting diode even lower. In particular, the voltage applied to the light emitting diode can be further increased by using a predetermined diode whose forward on-state voltage is lower than that of each diode constituting the power supply circuit section, so that the light emitting diode emits light more brightly. Can do. In addition, since the power supply circuit can be configured with a wide variety of general-purpose diodes, it is not forced to make major design changes due to production discontinuation, etc., compared to diode bridge elements with few types and poor compatibility between manufacturers. Design changes can be easily handled, and costs associated with design changes can be reduced.

  According to a fifth aspect of the present invention, in the switch device according to the first aspect, the power supply circuit unit is connected in series with a pair of diodes connected in series so as to be in a forward direction, and is connected in antiparallel with the pair of diodes. The diode of the booster circuit unit is connected in series with a pair of diodes of the power supply circuit unit, and has a predetermined forward ON voltage lower than each diode constituting the power supply circuit unit. It is a diode, The light emitting diode is connected in antiparallel with the predetermined diode. In this configuration, when the switch is closed, a voltage from the AC power supply is applied to the power supply circuit unit, thereby generating a forward on-voltage for one pair of diodes or one diode, and for each of the pair of diodes. The sum voltage of the forward ON voltage is lower than that in the case where the power supply circuit unit is configured by a diode bridge and a diode connected in a forward direction between the pair of DC output terminals. In a half cycle, when a sum voltage from a pair of diodes is applied to the booster circuit unit and a forward current flows through the predetermined diode, the capacitor of the booster circuit unit converts the forward on-voltage of the predetermined diode from the sum voltage. It is charged with the subtracted voltage, and in the next half cycle of the AC power supply, the voltage across the charged capacitor is in the order of one diode. It means to be applied to the light-emitting diode is superimposed on direction ON voltage can be the light emitting diode even at low sum voltage by a pair of diodes. In particular, the voltage applied to the light emitting diode can be further increased by using a predetermined diode whose forward on-state voltage is lower than that of each diode constituting the power supply circuit section, so that the light emitting diode emits light more brightly. Can do. In addition, since the power supply circuit can be configured with a wide variety of general-purpose diodes, it is not forced to make major design changes due to production discontinuation, etc., compared to diode bridge elements with few types and poor compatibility between manufacturers. Design changes can be easily handled, and costs associated with design changes can be reduced. Furthermore, power consumption in the power supply circuit portion can be further reduced.

  A sixth aspect of the present invention is the switch device according to any one of the first to fifth aspects, further comprising a light emitting element for light emission connected in parallel with the switch connected in series and the light emitting circuit unit. It is characterized by that. Here, when a light emitting element for light emission is connected in parallel with the switch, there is a possibility that the light emitting diode of the light emitting circuit section emits light due to a current flowing through the light emitting element for light emission when the switch is opened. In this invention, the erroneous light emission of such a light emitting diode can be prevented by connecting the light emitting element for light emission of firefly in parallel with the switch and the light emitting circuit portion.

  A seventh aspect of the present invention is the switch device according to any one of the second to fifth aspects, further comprising a resistor connected in parallel with the power supply circuit unit. For example, in a configuration in which one switch device is interposed between a load and an AC power source, the switch device is turned on, and the power source is turned on / off on the load side, the leakage current when the power source on the load side is turned off. The light emitting diode may emit light with a small current flowing in the power supply circuit section when the light emitting element flows or when the light emitting element for light emission corresponding to the switch of the switch device is connected in parallel. In the invention, the circuit can be set so that the light emitting diode does not emit light with such a small current by the resistor connected in parallel with the power supply circuit unit. Thereby, it is possible to prevent erroneous light emission of the light emitting diode.

  According to an eighth aspect of the present invention, in the switch device according to any one of the first to seventh aspects, the booster circuit unit further includes a resistor connected in series with a capacitor and a diode of the booster circuit unit. And In this configuration, even if a large inrush current flows through the capacitor in the boost circuit section due to the low impedance of the load, the inrush current can be suppressed by a resistor connected in series with the capacitor and diode in the boost circuit section. It becomes possible to protect the diode of the booster circuit unit from the inrush current.

  The invention according to claim 9 is the switch device according to claim 2, 4 or 5, further comprising a resistor connected in series to the light emitting diode and the predetermined diode and the capacitor of the booster circuit section. It is characterized by. In this configuration, the current limiting resistor for the light emitting diode and the inrush current suppressing resistor for the predetermined diode can be used as a single resistor, so that the cost of parts and assembly can be reduced, and the size can be reduced. It becomes possible.

  The invention according to claim 10 is the switch device according to claim 2, wherein the power supply circuit section includes a primary winding connected between the switch and the other terminal section, and both ends of the boost circuit section. And a secondary winding connected to the transformer. In this configuration, when the switch is closed, a predetermined voltage is generated in the secondary winding by applying a voltage from the AC power source to the primary winding of the transformer. Even if the power supply circuit section is composed of a diode connected in a forward direction between a pair of DC output terminals, the predetermined voltage of the secondary winding is boosted in a certain half cycle of the AC power supply even if the power supply circuit section is low. When a forward current flows through the diode of the booster circuit when applied to the circuit part, the capacitor of the booster circuit is charged with a voltage obtained by subtracting the forward ON voltage of the diode of the booster circuit from the predetermined voltage. In the next half cycle of the AC power supply, the voltage across the charged capacitor is superimposed on the predetermined voltage of the secondary winding and applied to the light emitting diode, so that the light emitting diode can emit light. Can. Further, since the predetermined voltage of the secondary winding may be low, the number of turns of the primary winding can be reduced.

  According to the present invention, power consumption in the power supply circuit unit can be reduced, heat dissipation measures can be easily or unnecessary, and costs can be reduced.

(Embodiment 1)
1 is a configuration diagram of a switch device according to a first embodiment of the present invention, FIG. 2 is a perspective view of the switch device, FIG. 3 is an exploded perspective view of the switch device, and FIG. 4 is an operation waveform diagram of the switch device.

  The switch device 1 according to the first embodiment shown in FIG. 2 is a one-module wiring device attached to a mounting frame (not shown) defined in JIS C 8375, for example, and is attached to the mounting frame and embedded in a wall. It is used in the state that was done. In the example of FIG. 1A, the switch device 1 is interposed between a load LD such as a lamp and a power source (commercial power source) AC, and an AC voltage from the power source AC is applied through the load LD in series. It is supposed to be.

  As shown in FIGS. 2 and 3, the switch instrument 1 has a box-shaped body 2 having an opening at the front and a shape for closing the opening (a box having an opening at the rear in the figure). And a cover block 3 having a switch operation unit 30 on the front side, and a pair of terminal portions 4 and 4 as a part constituting the circuit shown in FIG. , 4 are housed in an opening / closing element 5 and a light emitting circuit section 6 connected in series.

  As shown in FIG. 3, the terminal portion 4 includes a terminal plate 41 formed by bending each leg portion 411 of an H-shaped conductive plate having four leg portions 411 rearward, and the two arranged opposite to each other. A pair of chain springs 42 and 42 disposed between the pair of leg portions 411 and 411 and the leg portions 411 and 411, respectively, and external conductor wires to the terminal plate 41 by the pair of chain springs 42 and 42. The release button 43 is used to release the lock. That is, the terminal part 4 is a fast connection terminal. Further, a fixed contact is also added to the terminal board 41.

  The open / close element 5 functions as a switch for electrically connecting the light emitting circuit unit 6 to the pair of terminal units 4 and 4 in response to a pressing operation on the switch operation unit 30. In the example of FIG. It is comprised by the board. A movable contact is also added to the switching element.

  The light emitting circuit unit 6 includes a power supply block 6a including a printed circuit board and a light emitting block 6b. The power supply circuit unit 61, the booster circuit unit 62, and the load circuit unit 63 shown in FIG. Yes. The power supply circuit unit 61 and the booster circuit unit 62 are connected in parallel between the switching element 5 connected to one terminal unit 4 of the pair of terminal units 4 and 4 and the other terminal unit 4, and these power supply circuits The voltage obtained by the unit 61 and the booster circuit unit 62 is applied to the load circuit unit 63.

  The power supply circuit unit 61 obtains a predetermined voltage from the power supply AC. In the first embodiment, the power supply circuit unit 61 is configured by a diode bridge including four diodes D61. The pair of AC input terminals T611 and T611 of the diode bridge are opened and closed. While being connected between the element 5 and the other terminal portion 4, the pair of DC output terminals T612 and T612 are short-circuited.

  The booster circuit unit 62 boosts the voltage obtained by the power supply circuit unit 61, and includes a series capacitor C62 and a diode D62. The diode D62 is a Schottky diode having a forward ON voltage (for example, about 0.2V) lower than the forward ON voltage (for example, about 0.7V) of each diode D61 that constitutes the diode bridge. Here, in the case of a silicon diode, the forward on-state voltage is substantially constant regardless of the magnitude of the current.

  The load circuit unit 63 includes a series of light emitting diodes LED (hereinafter referred to as “LED”) and a current limiting resistor R63, and is connected in antiparallel with the diode D62 of the boosting circuit unit 62, whereby both ends of the capacitor C62. The LED is configured to emit light by a voltage obtained by superimposing the voltage on a predetermined voltage of the power supply circuit unit 61. The LED is lit when the switching element 5 as a switch is closed.

  Next, the circuit operation which is a feature of the switch device 1 having the above-described configuration will be described. When the switching element 5 as a switch is closed, a voltage from the power supply AC is applied to the pair of AC input terminals T611 and T611 of the power supply circuit unit 61, so that either one of the pair of diodes D61 and D61 connected in series is connected. Forward on voltages 0.7V and 0.7V are generated respectively. Thereby, the sum voltage 1.4V of these forward ON voltages is generated between the pair of AC input terminals T611 and T611 as the voltage V61 obtained in the power supply circuit section 61 as shown in FIG. In the example of FIG. 4, the one terminal portion 4 side to which the switching element 5 is connected is positive. Further, the voltage V61 is compared with a voltage of 2.1 V (= 0.7 × 3) in the case where a diode is further connected in the forward direction between a pair of DC output terminals of the diode bridge (hereinafter referred to as “conventional configuration”). Become lower.

  As shown in FIG. 1B and FIG. 4, in a certain half cycle TM1 of the power supply AC, a sum voltage V61 by a certain pair of diodes D61 and D61 is applied to the booster circuit unit 62 and applied to the diode D62 in the forward direction. When a current flows, the capacitor C62 of the booster circuit unit 62 is charged with a voltage of 1.2V obtained by subtracting the forward ON voltage of 0.2V of the diode D62 from the voltage V61 of 1.4V. As a result, the voltage across the capacitor C62 becomes 1.2V.

  As shown in FIG. 1C and FIG. 4, in the next half cycle TM2 of the power supply AC, the voltage 1.2V across the charged capacitor C62 becomes the sum voltage V61 by another pair of diodes D61 and D61. It is superimposed and applied to the LED as a voltage of 2.6V. Thereby, the LED is turned on.

  According to the first embodiment, since the voltage of 2.6V can be applied to the load circuit unit 63 even when the sum voltage V61 is low, the LED can emit light brighter than in the conventional configuration.

  In addition, since the voltage V61 can be lowered as compared with the case of the conventional configuration, the power consumption in the power supply circuit unit 61 can be reduced, and a heat dissipation measure can be easily or unnecessary, and the cost can be reduced. For example, the power consumption when the rated current is 500 mA is about 1.05 W (= 0.5 × 2.1) in the case of the conventional configuration, whereas it is about 0 in the case of the first embodiment. .7W (= 0.5 × 1.4). In addition, the rate of drop of the voltage applied to the load LD can be reduced as compared with the conventional configuration, and the rated current can be increased.

  Further, the LED can emit light with a minimum allowable current smaller than that in the conventional configuration. For example, when the forward voltage of the LED is about 1.5V, the load current is small (for example, about 2 mA), and the forward on-voltage of each diode D61 is about 0.5V, in the conventional configuration, 1.5V ( = 0.5 × 3), the LED may not be able to emit light, whereas in the first embodiment, 1.8V (= 0.5 × 2-0.2 + 0.5 × 2) Therefore, the LED can emit light without any problem.

  Furthermore, since the voltage applied to the LED can be further increased by using the diode D62 whose forward on-state voltage is lower than that of each diode D61 constituting the diode bridge, the LED can emit light even more brightly. .

(Embodiment 2)
FIG. 5 is a configuration diagram of a switch device according to the second embodiment of the present invention.

  As shown in FIG. 5, the switch device 1 according to the second embodiment is different from the first embodiment in that a booster circuit unit 62 connects a series capacitor C62 and a diode D62 in two sets in parallel and each set. The capacitor circuit C62 and the diode D62 are arranged in a different arrangement order, while the load circuit unit 63 is connected to the connection point between the capacitor C62 and the diode D62 in one set in the boost circuit unit 62 and the capacitor in the other set. The LED and each diode D62 are connected so as to be in the forward direction between the connection point of C62 and the diode D62.

  Next, the circuit operation which is a feature of the switch device 1 of Embodiment 2 will be described. When the switching element 5 as a switch is closed, a voltage from the power supply AC is applied to the pair of AC input terminals T611 and T611 of the power supply circuit unit 61, so that either one of the pair of diodes D61 and D61 connected in series is connected. Forward on voltages 0.7V and 0.7V are generated respectively. As a result, a sum voltage 1.4V of these forward ON voltages is generated between the pair of AC input terminals T611 and T611 as the voltage V61 obtained by the power supply circuit unit 61.

  As shown in FIG. 5B, the voltage V61 of the sum voltage of a certain pair of diodes D61 and D61 is applied to the booster circuit unit 62 in a certain half cycle of the power supply AC, and a forward current flows through each diode D62. In this case, each capacitor C62 of the booster circuit unit 62 is charged with a voltage of 1.2V obtained by subtracting the forward ON voltage of 0.2V of the diode D62 connected in series from the voltage V61 of 1.4V. As a result, the voltage across each capacitor C62 becomes 1.2V.

  As shown in FIG. 5 (c), in the next half cycle of the power supply AC, the charged voltage 1.2V across each capacitor C62 is superimposed on the sum voltage of another pair of diodes D61 and D61, and 3.8V. The voltage is applied to the LED. Thereby, the LED is turned on.

  According to the second embodiment, even when the sum voltage V61 is low, a voltage of 3.8 V can be applied to the load circuit unit 63, so that the LED emits light more brightly than in the case of the conventional configuration and the first embodiment. In addition, the power consumption in the power supply circuit unit 61 can be reduced as in the first embodiment.

  Further, the LED can emit light with a minimum allowable current smaller than that in the conventional configuration. For example, when the forward voltage of the LED is about 1.5V, the load current is small (for example, about 2 mA), and the forward ON voltage of each diode D61 is about 0.5V, There is a possibility that the LED cannot emit light due to a voltage, whereas in the second embodiment, 2.6V (= 0.5 × 2-0.2 + 0.5 × 2-0.2 + 0.5 × 2). Therefore, the LED can emit light without any problem.

(Embodiment 3)
FIG. 6 is a configuration diagram of a switch device according to a third embodiment of the present invention.

  As shown in FIG. 6, the switch device 1 of the third embodiment is different from the first embodiment in that a power supply circuit unit 61 includes a pair of diodes D61 and D61 connected in series so as to be in the forward direction. It is characterized by being configured to be connected in reverse parallel.

  Next, the circuit operation which is a feature of the switch device 1 of Embodiment 3 will be described. When the open / close element 5 as a switch is closed, a voltage from the power supply AC is applied to each pair of diodes D61 and D61 in the power supply circuit unit 61, so that either one of the pair of diodes D61 and D61 is forward direction. On voltages 0.7V and 0.7V are generated. As a result, a sum voltage of 1.4 V of the forward ON voltage is generated at both ends as a voltage V61 obtained by the power supply circuit unit 61.

  When a voltage V61 of a sum voltage from a certain pair of diodes D61 and D61 is applied to the booster circuit unit 62 and a forward current flows through the diode D62 in a half cycle of the power supply AC, the capacitor C62 of the booster circuit unit 62 The battery is charged with a voltage of 1.2V obtained by subtracting a forward ON voltage of 0.2V of the diode D62 from the voltage V61 of 1.4V. As a result, the voltage across the capacitor C62 becomes 1.2V.

  In the next half cycle of the power supply AC, the voltage 1.2V across the charged capacitor C62 is superimposed on the voltage V61 of the sum voltage of another pair of diodes D61 and D61 and applied to the LED as a voltage of 2.6V. become. Thereby, the LED is turned on.

  According to the third embodiment, since the voltage of 2.6V can be applied to the load circuit unit 63 even when the voltage V61 of the sum voltage is low, the LED can emit light brighter than in the case of the conventional configuration, The same effects as those of the first embodiment can be obtained.

  In addition, since the power supply circuit unit 61 can be composed of a wide variety of general-purpose diodes, it is not forced to make a large design change due to production stoppage or the like, compared to a diode bridge element with a small number of types and poor compatibility between manufacturers. Therefore, it becomes easy to respond to the design change, and the cost associated with the design change can be reduced.

(Embodiment 4)
FIG. 7 is a configuration diagram of a switch device according to a fourth embodiment of the present invention.

  As shown in FIG. 7, the switch device 1 of the fourth embodiment is different from the first embodiment in that a power supply circuit unit 61 is connected in series so as to be in the forward direction, and a pair of diodes D61 and D61, The pair of diodes D61, D61 and one diode D61 connected in antiparallel are characterized in that they are configured.

  Next, a circuit operation that is a feature of the switch device 1 according to the fourth embodiment will be described. When the open / close element 5 as a switch is closed, a voltage from the power supply AC is applied to the power supply circuit unit 61, thereby generating a forward ON voltage of 0.7 V in the pair of diodes D61 and D61 or one diode D61.

  When a sum voltage of 1.4 V from the pair of diodes D61 and D61 is applied to the booster circuit unit 62 and a forward current flows through the diode D62 in a half cycle of the power supply AC, the capacitor C62 of the booster circuit unit 62 The battery is charged with a voltage of 1.2 V obtained by subtracting a forward ON voltage of 0.2 V of the diode D62 from the sum voltage of 1.4 V. As a result, the voltage across the capacitor C62 becomes 1.2V.

  In the next half cycle of the power supply AC, the voltage 1.2V across the charged capacitor C62 is superimposed on the forward ON voltage 0.7V by one diode D62 and applied to the LED as a voltage of 1.9V. . Thereby, the LED is turned on.

  According to the fourth embodiment, since the voltage of 1.9 V can be applied to the load circuit unit 63 even when the sum voltage V61 is low, the LED is caused to emit light although it is slightly darker than in the conventional configuration. In addition, the power consumption in the power supply circuit unit 61 can be further reduced.

  In addition, since the power supply circuit unit 61 can be composed of a wide variety of general-purpose diodes, it is not forced to make a large design change due to production stoppage or the like, compared to a diode bridge element with a small number of types and poor compatibility between manufacturers. Therefore, it becomes easy to respond to the design change, and the cost associated with the design change can be reduced.

(Embodiment 5)
FIG. 8 is a configuration diagram of a switch device according to a fifth embodiment of the present invention.

  As shown in FIG. 8, the switch device 1 according to the fifth embodiment is different from each embodiment (first embodiment in the illustrated example) in parallel with the switching element 5 and the light emitting circuit unit 6 connected in series. A light emitting circuit section 7 for light emission to be connected is further provided, and the light emitting circuit section 7 is constituted by a series resistor R7 and a neon lamp 70. The neon lamp 70 is lit when the opening / closing element 5 as a switch is opened.

  Here, when the resistor R7 and the neon lamp 70 constituting the light-emitting circuit unit 7 ′ shown by an imaginary line (dotted line) in FIG. 8 are connected in parallel with the switching element 5, the switching element 5 is opened when the switching element 5 is opened. There is a possibility that the LED of the light emitting circuit unit 6 emits light due to the current flowing through the neon lamp 70. On the other hand, according to the fifth embodiment, since the light emitting circuit unit 7 is connected in parallel with the switching element 5 and the light emitting circuit unit 6, the current flowing through the neon lamp 70 does not flow into the light emitting circuit unit 6. Such erroneous light emission of the LED can be prevented.

  The technique of the fifth embodiment is applied to a configuration in which the same power supply circuit unit 61 as that of the first embodiment is provided. However, the technology of the fifth embodiment is further provided between a pair of DC output terminals of a diode bridge that configures the power supply circuit unit 61. The present invention can be applied to a configuration in which diodes are connected in the forward direction or a conventional configuration, and erroneous light emission of an LED can be prevented.

(Embodiment 6)
FIG. 9 is a configuration diagram of a switch device according to a sixth embodiment of the present invention.

  As shown in FIG. 9, the switch device 1 of the sixth embodiment further includes a resistor R <b> 8 connected in parallel with the power supply circuit unit 6 as a difference from the respective embodiments (the first embodiment in the figure). It is characterized by.

  Here, since each embodiment provided with the capacitor C62 and the diode D62 is very sensitive, the LED is lit even with a current of about 0.5 mA in some cases. For this reason, in the sixth embodiment, the circuit is set by the resistor R8 so that the LED does not emit light even when a small current flows through the light emitting circuit unit 6. For example, assuming that the resistance value of the resistor R8 is R8, the voltage across the power supply circuit 6 is V61, and the current as the threshold value that flows through the resistor R8 until it rises to this voltage V61 is I, R8 = V61 / I Therefore, the threshold value can be freely changed by adjusting the resistance value R8.

  According to the sixth embodiment, for example, one switch device 1 is interposed between the load LD and the power source AC, the switch of the switch device 1 is turned on, and the power source is turned on / off on the load LD side. In this configuration, even when a leakage current flows when the power is turned off on the load LD side, or when a light emitting element for light emission corresponding to a switch of the switch device 1 is connected in parallel, a small current flowing in the power circuit 61 Thus, it is possible to prevent the LED from emitting light.

  The technique of the sixth embodiment is applied to a configuration in which the power supply circuit unit 61 similar to that of the first embodiment is provided. However, the technology of the sixth embodiment is further provided between a pair of DC output terminals of a diode bridge that configures the power supply circuit unit 61. The present invention can be applied to a configuration in which diodes are connected in the forward direction or a conventional configuration, and erroneous light emission of an LED can be prevented.

(Embodiment 7)
FIG. 10 is a configuration diagram of a switch device according to a seventh embodiment of the present invention.

  As shown in FIG. 10, the switch device 1 according to the seventh embodiment is different from the respective embodiments (first embodiment in the illustrated example) in that the booster circuit unit 62 includes a capacitor C62 and a diode of the booster circuit unit 62. It further includes a resistor R62 connected in series with D62. In the example of FIG. 10, the resistor R62 is connected in parallel with the load circuit unit 63.

  For example, if the load LD is a lamp and the capacitance is large and the impedance is low, a large inrush current flows. For incandescent bulbs, the inrush current increases further when it is cold. In such a case, the inrush current can be lowered by setting the resistance value of the resistor R62 to several tens of ohms. Further, if the resistance value of the resistor R62 is about several tens of ohms, the capacitor C62 can be sufficiently charged.

  According to the seventh embodiment, even if a large inrush current flows through the capacitor C62 of the booster circuit unit 62 due to the low impedance of the load LD, the resistor R62 connected in series with the capacitor C62 and the diode D62 of the booster circuit unit 62 Since the inrush current can be suppressed, the diode D62 of the booster circuit unit 62 can be protected from the inrush current.

(Embodiment 8)
FIG. 11 is a configuration diagram of a switch device according to an eighth embodiment of the present invention.

  The switch device 1 of the eighth embodiment is different from the first embodiment in which the LED is connected in antiparallel to the diode D62 in the series capacitor C62 and the diode D62, as shown in FIG. A resistor R63 connected in series with the diode D62 and the capacitor C62 of the booster circuit unit 62 is provided. In the example of FIG. 11, the resistor R63 of the first embodiment is also used as a current limiting resistor for LED and an inrush current suppressing resistor for the diode D62.

  According to the eighth embodiment, the current limiting resistor for the LED and the inrush current suppressing resistor for the diode D62 can be shared by the single resistor R63, so that the cost of parts and assembly can be reduced, and the size can be reduced. Can be realized.

(Embodiment 9)
FIG. 12 is a configuration diagram of a switch device according to the ninth embodiment of the present invention.

  As shown in FIG. 12, the switch device 1 according to the ninth embodiment is different from the first embodiment in that the power supply circuit unit 61 is connected between the switching element 5 and the other terminal unit 4. The transformer T61 includes a winding n1 and a secondary winding n2 connected to both ends of the booster circuit unit 62.

  Next, a circuit operation that is a feature of the switch device 1 according to the ninth embodiment will be described. When the switching element 5 as a switch is closed, a voltage from the power source AC is applied to the primary winding n1 of the transformer T61, whereby a predetermined voltage is generated in the secondary winding n2.

  Even if the predetermined voltage is lower than that of the conventional configuration, the predetermined voltage of the secondary winding n2 is applied to the booster circuit unit 62 in a certain half cycle of the power source AC, and is sequentially applied to the diode D62 of the booster circuit unit 62. When the current in the direction flows, the capacitor C62 of the booster circuit unit 62 is charged with a voltage obtained by subtracting the forward ON voltage of the diode D62 from a predetermined voltage, and is charged in the next half cycle of the power supply AC. Since the voltage across the capacitor C62 is superimposed on the predetermined voltage of the secondary winding n2 and applied to the LED, the LED can emit light. Moreover, since the predetermined voltage of the secondary winding n2 may be low, the number of turns of the transformer T61, for example, the number of turns of the primary winding can be reduced.

  For example, in the case of the switch device 1 rated at 0.5A, the power supply circuit unit 61 is configured by a diode, and in the case of the switch device 1 rated at 4A, the power circuit unit 61 is configured by a transformer T61. What should I do?

It is a block diagram of the switch instrument of Embodiment 1 by this invention. It is a perspective view of the switch instrument. It is a disassembled perspective view of the switch instrument. It is an operation | movement waveform diagram of the switch instrument. It is a block diagram of the switch instrument of Embodiment 2 by this invention. It is a block diagram of the switch instrument of Embodiment 3 by this invention. It is a block diagram of the switch instrument of Embodiment 4 by this invention. It is a block diagram of the switch instrument of Embodiment 5 by this invention. It is a block diagram of the switch instrument of Embodiment 6 by this invention. It is a block diagram of the switch instrument of Embodiment 7 by this invention. It is a block diagram of the switch instrument of Embodiment 8 by this invention. It is a block diagram of the switch instrument of Embodiment 9 by this invention. It is a block diagram of the conventional switch instrument. It is a block diagram of the conventional switch instrument.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Switch apparatus 2 Body 3 Cover block 4 Terminal part 5 Switch element 6 Light emitting circuit part 61 Power supply circuit part D61 Diode 62 Boosting circuit part C62 Capacitor D62 Diode 63 Load circuit part LED Light emitting diode R63 Resistance

Claims (10)

  A switch device comprising a pair of terminal portions to which a voltage from an AC power supply is applied via a load in series, and a switch and a light emitting circuit portion connected in series between the pair of terminal portions, the light emitting device The circuit unit includes a power supply circuit unit that obtains a predetermined voltage from the AC power source between the switch connected to one terminal unit of the pair of terminal units and the other terminal unit, and a series capacitor and diode A light-emitting diode that emits light at a voltage obtained by superimposing a voltage across the capacitor on the predetermined voltage. A switch device comprising:   The power supply circuit unit includes a diode bridge in which a pair of AC input terminals are connected between the switch and the other terminal unit in a state where the pair of DC output terminals are short-circuited, and the diode of the boost circuit unit 2. The switch according to claim 1, wherein the switch is a predetermined diode having a forward ON voltage lower than that of each diode constituting the diode bridge, and the light-emitting diode is connected in antiparallel with the predetermined diode. Instruments.   The power supply circuit unit is configured by a diode bridge in which a pair of AC input terminals are connected between the switch and the other terminal unit in a state where a pair of DC output terminals are short-circuited. The series capacitors and diodes are connected in two sets in parallel and arranged so that the arrangement order of the capacitors and diodes in each set is different, and each diode in the booster circuit unit constitutes the diode bridge. Each of the light emitting diodes is between a connection point of one set of capacitors and diodes and a connection point of the other set of capacitors and diodes in the step-up circuit unit. And the diodes of the booster circuit section are connected in a forward direction. Mounting of the switch device.   The power supply circuit unit is configured by connecting two pairs of diodes connected in series so as to be in the forward direction in reverse parallel, and the diode of the boost circuit unit is configured by each diode constituting the power supply circuit unit. 2. The switch device according to claim 1, wherein the switch diode is a predetermined diode having a low forward ON voltage, and the light emitting diode is connected in antiparallel with the predetermined diode.   The power supply circuit unit includes a pair of diodes connected in series so as to be in the forward direction, and one diode connected in antiparallel to the pair of diodes, and the diode of the booster circuit unit includes the diode A pair of diodes in the power supply circuit unit are connected in a forward and parallel manner, and are predetermined diodes whose forward on-voltage is lower than each diode constituting the power supply circuit unit, and the light emitting diodes are connected in reverse parallel to the predetermined diodes The switch device according to claim 1, wherein:   The switch device according to any one of claims 1 to 5, further comprising a light emitting element for light emission connected in parallel with the switch connected in series and the light emitting circuit section.   The switch device according to claim 2, further comprising a resistor connected in parallel with the power supply circuit unit.   The switch device according to any one of claims 1 to 7, wherein the booster circuit unit further includes a resistor connected in series with a capacitor and a diode of the booster circuit unit.   6. The switch device according to claim 2, further comprising a resistor connected in series to the light emitting diode and the predetermined diode and a capacitor of the booster circuit unit.   The power supply circuit unit includes a transformer including a primary winding connected between the switch and the other terminal unit, and a secondary winding connected to both ends of the booster circuit unit. The switch device according to claim 2.

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