JP2008053189A - Light control switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To aim at downsizing and elongation of life of a power supply switch with a function maintained of notifying an operable state of a lighting load. <P>SOLUTION: The switch is provided with a pair of resistors 3 connected at one end with a triac 2 constituting a main circuit 10 by being inserted between an alternating current power source AC and a lighting load L. At the other end side of the pair of resistors 3, a weak current circuit 11 on which a voltage from the alternating current power source AC is impressed after being stepped down with the pair of resistors 3 is provided. A power source switch 4 and an LED 50 are connected in series in the weak current circuit 11. The power source switch 4 makes the lighting load L operable by keeping an SBS 6 at an ON-state, and further, the triac 2 at an ON-state by switching electric connection between both ends. The LED 50 is for notifying an operable state of the lighting load L. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dimmer switch for dimming a lighting load.

  Conventionally, as an example of a dimming switch for dimming a lighting load, a triac 91 that is inserted between an AC power supply AC and a lighting load L and forms a main circuit 90 as shown in FIG. There is known a dimming switch 9 including a circuit 92 for causing the power supply switch 93, a power switch 93 inserted in the main circuit 90, and an LED 94 connected in parallel with the power switch 93 to notify the movable state of the illumination load L. . In the dimming switch 9, the lighting load L is turned on when the power switch 93 is turned on (closed), and the lighting load L is turned off and the LED 94 is turned on when the power switch 93 is turned off (open).

In addition, as another example of the conventional dimming switch, in Patent Document 1, a pair of terminals connected to one end of an AC power source and one end of a lighting fixture (lighting load) are inserted between the pair of terminals. A dimming switch comprising a triac, a neon lamp inserted between a pair of terminals, and a switch (power switch) that is connected in series with the triac and the neon lamp and switches between energizing the triac and energizing the neon lamp. It is disclosed. In the dimming switch of Patent Document 1, the luminaire is turned on when the switch is switched to the triac side, and the luminaire is turned off and the neon lamp is lit when the switch is switched to the neon lamp side.
JP-A-11-162248 (paragraph 0014 and FIG. 2)

  However, since the power switches of these conventional dimming switches are inserted in the main circuit to which a high voltage is applied, it is necessary to increase the allowable voltage. In general, since the power switch becomes larger as the allowable voltage increases, the conventional dimming switch can notify the movable state of the illumination load by the LED, but the power switch becomes larger. There was a problem. For this reason, in the conventional dimming switch, the space for disposing other elements is reduced, for example, a large-sized high-capacity inverter cannot be used, and a small-sized, low-capacitance switch must be used. .

  In addition, in the conventional dimming switch, the electrical stress of the power switch increases when the power switch opens and closes the electrical connection in the main circuit to which a high voltage is applied. There was also a problem of becoming.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a dimmer switch capable of reducing the size and extending the life of the power switch while notifying the movable state of the illumination load. Is to provide.

  According to a first aspect of the present invention, there is provided a triac that is inserted between an AC power source and a lighting load to constitute a main circuit, a first resistor that is connected to one end of one of the main terminals of the triac, and the first resistor. A low-power circuit provided on the other end side of the AC power supply and applied with a voltage drop from the AC resistor by the first resistor, and an LED for informing the movable state of the illumination load; and the LED in series And a power switch for moving the lighting load to close the TRIAC by opening and closing the electrical connection between both ends.

  According to a second aspect of the present invention, in the first aspect of the invention, the gate current that turns on the triac when the voltage difference between the voltage applied between the main terminals and the reference voltage applied to the gate exceeds the breakover voltage. Is applied between the main terminal of the SBS and is provided between the other end of the first resistor and the other of the main terminals of the triac. A first capacitor to be a voltage, a volume that forms a series circuit with the first capacitor and varies a resistance value to adjust the charging speed of the first capacitor, and the other end of the first resistor A reference voltage generating circuit that is provided between the gate of the SBS and has a second resistor and a diode and applies the reference voltage to the gate of the SBS , Characterized in that it comprises a second capacitor inserted between the other main terminal of the said SBS gate triacs in the weak electric circuit.

  According to a third aspect of the present invention, in the second aspect of the invention, the power switch and the volume include a three-way switch-equipped volume.

  According to a fourth aspect of the present invention, in the second aspect of the invention, the power switch is a push switch having a first push button that is pushed by a push operation and switches between opening and closing of an electrical connection between both ends. Is a volume with a push switch having a second push button that is pushed and driven by a push operation, and a fixed shaft portion that supports the second push button, wherein the push switch and the volume with the push switch are And an operating surface portion that opposes the second push button in the push drive direction, and includes a container that is housed so that the push drive direction of the first push button and the second push button are the same. A side surface extending from the end of the operation surface, and a skirt extending from the end of the side surface and facing the first push button in the push driving direction And is stored in the container so that the operation surface portion is exposed from one surface of the container, and the first push button and the second push button are moved by the push operation in the push driving direction. It is characterized by comprising a handle that is pushed and driven.

  The invention of claim 5 is characterized in that in the invention of claim 4, an elastic body is provided between the second push button of the volume with push switch and the operation surface portion of the handle.

  According to a sixth aspect of the present invention, in the fifth aspect of the invention, the handle includes a storage portion that is provided at a position facing the second push button of the volume with the push switch and stores the elastic body. To do.

  The invention of claim 7 is the invention according to any one of claims 4 to 6, wherein the handle has a bearing extending from the operation surface portion toward the periphery of the fixed shaft portion of the volume with push switch. Features.

  The invention according to claim 8 is the invention according to any one of claims 4 to 7, wherein the container body has a container-side rib provided so as to protrude inward from the one surface, and the handle includes the skirt. It has a handle-side rib extending from the end of the portion and contacting the inner surface of the vessel-side rib.

  The invention of claim 9 is the invention according to any one of claims 4 to 7, wherein the container has a container-side rib projecting inwardly from the one surface, and the handle has a cross-section U It has a handle-side rib which is formed in a letter shape and extends from the end of the skirt portion and contacts the outer surface of the vessel-side rib.

  The invention of claim 10 is characterized in that, in the invention of claim 8 or 9, the handle side rib and the body side rib are in line contact.

  According to the first aspect of the present invention, the allowable power of the power switch can be reduced as compared with the case where the power switch and the LED are provided in the main circuit. The switch can be miniaturized. In addition, since the electrical stress of the power switch can be reduced by switching in the weak circuit rather than switching the electrical connection of the power switch in the main circuit, the power switch and the LED are provided in the main circuit. In comparison with the power switch, the life of the power switch can be extended.

  According to the invention of claim 2, the flickering of the illumination load due to the triac opening and closing the electrical connection at an arbitrary timing can be reduced.

  According to the third aspect of the present invention, the power switch and the volume can be made as one element, so that the size can be reduced as compared with the case where the power switch and the volume are provided as separate elements.

  According to the invention of claim 4, even when the push switch function of the volume with a push switch cannot be used as the power switch, the push switch is used as the power switch, and the push switch is electrically operated by pushing the handle. Open and close connections.

  According to the invention of claim 5, even when the operation stroke of the first push button of the push switch is the same as that of the second push button of the push switch-equipped volume, the electrical connection of the push switch is reliably opened and closed. Can be switched.

  According to the sixth aspect of the present invention, when the user uses the handle to press the second push button of the push switch-equipped volume, the rattling of the handle can be reduced.

  According to the seventh aspect of the present invention, when the user presses the second push button of the push switch-equipped volume using the handle, the rattling of the handle can be further reduced and the end push can be reliably performed. It can be carried out.

  According to the eighth aspect of the present invention, when the user presses the second push button of the push switch-equipped volume using the handle, the rattling of the handle can be further reduced, and the end pushing is further ensured. Can be done. Further, the handle can be prevented from tilting by having the handle side rib and the body side rib at a position away from the fixed shaft portion of the volume with push switch.

  According to the ninth aspect of the present invention, when the user uses the handle to press the second push button of the volume with a push switch, the rattling of the handle can be further reduced, and the end pushing is further ensured. Can be done.

  According to the invention of claim 10, the friction generated between the handle and the container can be reduced by reducing the contact area as compared with the case where the handle-side rib and the container-side rib are in surface contact. Therefore, the operation of the handle by the user can be made smooth.

(Embodiment 1)
First, the configuration of the dimming switch 1 according to the first embodiment of the present invention will be described with reference to FIGS. The dimming switch 1 is for dimming the illumination load L shown in FIG. 1 and is inserted between the AC power supply AC and the illumination load L to form the main circuit 10 and the main triac 2. One set of resistors 3 connected at one terminal (terminal 23) and one end (left end in FIG. 1), the other end (right end in FIG. 1) of one set of resistors 3, and the other main terminal (terminal 24) of triac 2 ) And a weak electric circuit 11 provided between them. The AC power supply AC is, for example, a commercial power supply of 100V. The illumination load L is, for example, a fluorescent lamp or an incandescent bulb.

  The triac 2 is formed of a semiconductor such as silicon, for example, and is connected in series with the AC power supply AC and the lighting load L via the terminals 20 and 21 and the filter inductor 22, and between the two terminals 23 and 24 according to the gate current. This switches between opening and closing the electrical connection. A filter capacitor 25 is connected to the triac 2 and the inductor 22 in parallel.

  One set of resistors 3 is formed by connecting two resistors 30 and 31 in parallel. The resistance value of each of the resistors 30 and 31 is not limited, but a preferable range is 50 kΩ to 60 kΩ (for example, 56 kΩ). From the above, one set of resistors 3 drops the AC voltage from the AC power supply AC.

  In addition, the dimmer switch 1 includes a power switch 4 that opens and closes an electrical connection between both ends in the weak electric circuit 11, and an LED circuit 5 that is connected in series with the power switch 4 and notifies the movable state of the illumination load L. And a bidirectional switching element (hereinafter referred to as “SBS”) 6 that outputs a gate current for turning on the triac 2 to the gate of the triac 2. The allowable voltage of the weak electric circuit 11 is a voltage (for example, 18 V or less) lower than the AC voltage from the AC power supply AC. Then, an AC voltage dropped by a pair of resistors 3 is applied to the weak electric circuit 11.

  When both ends of the power switch 4 are turned off, the triac 2 is turned on (closed), and the illumination load L is moved. On the other hand, when both ends are turned on, the triac 2 is turned off (opened), and the illumination load L is stopped.

  The LED circuit 5 includes an LED 50 and a diode 51 connected in parallel to the LED 50. The LED 50 and the diode 51 are connected in opposite directions. The LED 50 lights up when a current flows when the power switch 4 is turned on.

  The SBS 6 is connected to the time constant circuit 61 through a resistor 60 at one end (the right end in FIG. 1), and is connected to the gate of the triac 2 at the other end (the left end in FIG. 1). The time constant circuit 61 is a circuit provided between the other end of the pair of resistors 3 (the right end in FIG. 1) and the terminal 24 of the triac 2 and the voltage across the both ends is dropped by the resistor 60 and applied to the SBS 6. And a volume (variable resistance) 611 and 612 that are connected in parallel to form a series circuit with the capacitor 610. The maximum resistance value of each of the volumes 611 and 612 is 100 kΩ, for example. The two volumes 611 and 612 adjust the charging speed of the capacitor 610 by changing the respective resistance values. Specifically, when the resistance values of the volumes 611 and 612 are increased, the charging speed of the capacitor 610 is decreased. When the resistance values of the volumes 611 and 612 are decreased, the charging speed of the capacitor 610 is increased.

  Further, a constant voltage circuit 62 connected in parallel with the time constant circuit 61 is provided in the weak electric circuit 11. The constant voltage circuit 62 is configured such that two Zener diodes 620 and 621 are connected in series with their directions reversed. Since the voltage across the time constant circuit 61 can be made constant by the constant voltage circuit 62, the influence on the voltage across the capacitor 610 can be reduced even when the AC voltage from the AC power supply AC fluctuates. Can do.

  Further, a reference voltage generating circuit 63 which is a series circuit having a resistor 630 and a diode 631 is provided between the gate of the SBS 6 and the other end of the pair of resistors 3 (the right end in FIG. 1). The reference voltage generation circuit 63 applies a reference voltage to the gate of the SBS 6 when the power switch 4 is turned off.

  As shown in FIG. 1, the SBS 6 is turned on (closed) when the voltage difference between the voltage dropped across the capacitor 610 by the resistor 60 and the reference voltage exceeds the breakover voltage. A gate current having a magnitude necessary for turning on is output to the gate of the triac 2. When the gate current is output, the triac 2 is turned on (closed state), and the load current flowing from the AC power source AC to the pair of resistors 3 flows from the AC power source AC to the triac 2.

  A capacitor 64 is inserted between the gate of the SBS 6 and the terminal 24 of the triac 2. Here, the case where the capacitor 64 is provided as in the dimming switch 1 according to the first embodiment and the case where the capacitor 64 is not provided as a comparative example will be described with reference to FIG. 2, (d) shows the Zener voltage of the constant voltage circuit 62, (e) shows the reference voltage of the SBS 6, and (f) shows the voltage across the lighting load L. First, when the capacitor 64 is not provided, as shown in FIG. 2A, the reference voltage of the SBS 6 (FIG. 2A) is the zener voltage of the constant voltage circuit 62 (FIG. 2A). (D)) may be higher (T in FIG. 2A). For this reason, when the SBS 6 is turned on and the triac 2 is turned on, the phenomenon that the illumination load L is lit unscheduled occurs ((f) in FIG. 2 (a)). Dimming is not possible.

  In contrast, when the capacitor 64 is provided as in the dimming switch 1 according to the first embodiment, as shown in FIG. 2B, the reference voltage of the SBS 6 ((e) in FIG. 2B). Since the reference voltage of the SBS 6 when the capacitor 64 is not provided can be prevented from becoming higher than the Zener voltage of the constant voltage circuit 62 ((d) in FIG. 2B). Unscheduled lighting of the lighting load L due to the SBS 6 being turned on and the triac 2 being turned on can be prevented ((f) in FIG. 2 (b)).

  Next, the operation of the dimming switch 1 according to the first embodiment will be described with reference to FIG. First, a case where power is not supplied from the AC power source AC to the lighting load L will be described. When the power switch 4 is switched to the on state, the alternating current from the alternating current power supply AC switches between the LED 50 and the diode 51 for each polarity, and the LED 50 is turned on. At this time, since the capacitor 610 is not charged, the SBS 6 does not conduct, and no gate current flows through the gate of the triac 2. Since the triac 2 is turned off (open state), sufficient power is not supplied to light the illumination load L from the AC power supply AC. From the above, it is possible to notify the user that the illumination load L is in a stopped state by turning on the LED 50.

  Next, a case where power is supplied from the AC power source AC to the lighting load L will be described. When the power switch 4 is switched to the OFF state, no current flows through the LED 50, so the LED 50 is turned off. At this time, an alternating current from the alternating current power supply AC flows to the capacitor 610 via the volumes 611 and 612. The capacitor 610 is charged by the current flowing through the capacitor 610, and the voltage across the capacitor 610 increases. Apart from the above operation, the reference voltage generation circuit 63 applies the reference voltage to the SBS 6. After that, when the voltage difference between the voltage dropped by the resistor 60 from the both-ends voltage and the reference voltage exceeds the breakdown voltage of the SBS 6, the SBS 6 is turned on, and a gate current is input to the gate of the triac 2. As a result, the triac 2 is turned on, and sufficient power is supplied from the AC power supply AC to the lighting load L. From the above, the illumination load L can be moved. Further, it is possible to notify the user that the illumination load L is in a movable state by turning off the LED 50.

  Next, dimming of the illumination load L by the dimming switch 1 according to the first embodiment will be described. In order to dimm the illumination load L, the resistance values of the volumes 611 and 612 are adjusted. Specifically, when the resistance values of the volumes 611 and 612 are increased to reduce the charging speed of the capacitor 610, it takes a long time until the SBS 6 is turned on and the triac 2 is turned on. Thereby, since the lighting time of the illumination load L becomes short, brightness can be suppressed. On the other hand, when the resistance values of the volumes 611 and 612 are decreased to increase the charging speed of the capacitor 610, the time until the SBS 6 is turned on and the triac 2 is turned on is shortened. Thereby, since the lighting time of the illumination load L becomes long, it can be made bright.

  As described above, according to the first embodiment, by providing the power switch 4 and the LED 50 in the low-power circuit 11, the allowable power of the power switch 4 is reduced as compared with the case where the power switch 4 and the LED 50 are provided in the main circuit 10. Therefore, the power switch 4 can be reduced in size while notifying the movable state of the illumination load L by the LED 50. Moreover, since the electrical stress of the power switch 4 can be reduced by switching in the weak electrical circuit 11 rather than switching the electrical connection of the power switch 4 in the main circuit 10, the power switch 4 and the LED 50 are connected to the main switch 10. The life of the power switch 4 can be extended as compared with the case where it is provided in the circuit 10.

  Furthermore, by providing the capacitor 64, the flickering of the illumination load L due to the triac 2 opening and closing the electrical connection at an arbitrary timing can be reduced.

(Embodiment 2)
A configuration of the dimming switch 1a according to the second embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 3, the dimming switch 1 a includes a triac 2, a pair of resistors 3, a power switch 4, and an LED circuit 5. The dimming switch 1 according to the first embodiment (see FIG. 1). However, the dimming switch 1 of the first embodiment has the following characteristic portions. Note that a, b, and c in FIG. 3 are connected to the other end of the pair of resistors 3 and the gate and terminal 24 of the triac 2 in a, b, and c in FIG.

  The dimming switch 1a includes a diac 6a as shown in FIG. 3 instead of the SBS 6 of the first embodiment. As with the SBS 6 of the first embodiment, the diac 6a is connected to the time constant circuit 61 at one end (the right end in FIG. 3) via the resistor 60, and the gate and the other end (the left end in FIG. 3) of the triac 2 (see FIG. 1). ). The diac 6a is turned on (closed) when the voltage dropped by the resistor 60 from the voltage across the capacitor 610 exceeds the breakover voltage, and a gate current having a magnitude necessary to turn on the triac 2 is generated. Output to the triac 2 gate. When the gate current is output, the load current flowing from the AC power supply AC to the pair of resistors 3 flows from the AC power supply AC to the triac 2 as in the first embodiment. Unlike the dimming switch 1 of the first embodiment, the dimming switch 1a does not include the reference voltage generation circuit 63.

  As described above, according to the second embodiment, even in the configuration in which the SBS 6 is replaced with the diac 6a, the power switch 4 and the LED 50 are provided in the main circuit 10 as in the first embodiment. Miniaturization and long life can be achieved. Further, since the reference voltage generation circuit 63 (see FIG. 1) is not required, the circuit configuration can be simplified as compared with the case where the SBS 6 is provided.

(Embodiment 3)
A configuration of the dimming switch 1b according to the third embodiment of the present invention will be described with reference to FIGS. 1 and 4, the dimming switch 1b includes a triac 2, a pair of resistors 3, an LED circuit 5, an SBS 6, a constant voltage circuit 62, a reference voltage generating circuit 63, and a capacitor 64. Are provided in the same manner as the dimming switch 1 of the first embodiment (see FIG. 1), but have the following characteristic portions that are not included in the dimming switch 1 of the first embodiment. 4a, 4b, and 4c are connected to the other end of the pair of resistors 3 and the gate and terminal 24 of the triac 2 in FIGS.

  The dimming switch 1b includes a volume 7 with a three-way switch as shown in FIG. 4 in place of the power switch 4 and the volumes 611 and 612 (see FIG. 1) of the first embodiment. The volume function 70 of the three-way switch-equipped volume 7 is provided in the time constant circuit 61a and used as the volumes 611 and 612 (see FIG. 1) of the first embodiment, and the three-way switch function 71 is the power switch 4 (see FIG. 1). 1). The three-way switch-equipped volume 7 may be one in which the volume function 70 and the three-way switch function 71 operate independently without interfering with each other. In the three-way switch function 71, the terminal 710 and the terminal 711 are connected to each other. The volume function 70 may be operated when conducting, and the volume function 70 may be stopped when the terminal 710 and the terminal 712 are conducting.

  As described above, according to the third embodiment, the power switch 4 and the volumes 611 and 612 according to the first embodiment can be configured as one element (volume 7 with a three-way switch). And the volumes 611 and 612 (see FIG. 1) can be reduced in size as compared with the case where they are provided as separate elements. Further, by switching the three-way switch function 71 of the three-way switch-equipped volume 7 so that a current flows through the LED 50, the LED 50 is lit as in the first embodiment. Further, for example, a rotary switch with an off switch can operate the volume function only in an on state, so that the power switch and the volume cannot be used together, but the volume 7 with a three-way switch can also be used.

(Embodiment 4)
First, the structure of the light control switch 1c which concerns on Embodiment 4 of this invention is demonstrated using FIG. As with the dimming switch 1 of the first embodiment (see FIG. 1), the dimming switch 1c is contrasted with the triac 2, the pair of resistors 3, the LED circuit 5, the SBS 6, and the constant voltage circuit 62. Although it has a voltage generation circuit 63 and a capacitor 64, it has the following characteristic parts that are not included in the dimming switch 1 of the first embodiment.

  As shown in FIG. 5, the power switch of the dimming switch 1c is a push switch 4a, and the volume is a volume 65 with a push switch. The push switch 4a is for a weak electric circuit, and includes a push button 40 that is pushed by a push operation and switches between opening and closing of an electrical connection between both ends. Generally, the power switch becomes larger as the allowable voltage increases. As a result, it can be made smaller than a push switch for a high power circuit, and therefore, a space for arranging other components in the wiring module without changing the overall size as compared with a case where a push switch for a high power circuit is provided. Can be enlarged. By expanding the space in the wiring module, it is possible to use, for example, a high-capacity type inductor that is larger than the conventional one.

  The volume with push switch 65 includes a push button 650 that is pushed and driven by a push operation, and a fixed shaft portion 651 that supports the push button 650. The volume with push switch 65 can change the resistance value when the push switch function is in the on state, and cannot change the resistance value when the push switch function is in the off state. In such a case, since the push switch function of the volume 65 with push switch cannot be used as a power switch, the push switch 4a is separately provided as a power switch.

  In addition, the dimming switch 1c has a two-module size of an embedded wiring device whose outer diameter is ready-made (for example, a large-angle continuous wiring device defined by Japanese Industrial Standards (JIS) (see JIS C8304)). A formed body 80 is provided. The container 80 is composed of a box-shaped body 81 having an opening and a cover 82. The body 81 includes a plurality of locking protrusions 811 and 811 on the side surface portion 810.

  The cover 82 includes a front surface portion 820, a side surface portion 821 extending rearward from the end portion of the front surface portion 820, and a plurality of locking pieces 822, 822 extending rearward from the end portion of the side surface portion 821. A cylindrical vessel-side rib 823 (see FIG. 6A) provided so as to protrude inward from the back surface of the front surface portion 820 is integrally provided. An exposure window 824 that exposes an operation surface portion 850 of the handle 85 described later to the outside is formed at the center of the front surface portion 820, and an LED window 825 that exposes the LED 50 to the outside is formed at the lower left portion of the front surface portion 820. Yes. Further, a locking hole 826 is formed in each locking piece 822. Further, the cover 82 secures a space 827 below the exposure window 824 so that the handle 85 can move in the X-axis direction of FIG.

  The container body 80 has the push projection 411 of the body 81 and the lock hole 826 of the cover 82 shown in FIG. Are stored so that the pushing drive directions of the two are the same.

  Further, the dimming switch 1c is provided on the front side of the board block 83 including the push switch 4a and the volume 65 with push switch, the triac block 84 covering the board block 83, and the push switch 4a and the volume 65 with push switch. The instrument body 80 is provided with a handle 85 and a spring 86 provided between the push button 650 of the volume 65 with push switch and the operation surface portion 850 of the handle 85.

  The board block 83 includes a printed board 830. The printed circuit board 830 is provided with a push switch 4a and a push switch so that the push buttons 40 and 650 of the push switch 4a and the push switch volume 65 are in the same push driving direction (X-axis direction in FIG. 5). A volume 65 is mounted.

  As shown in FIG. 6A, the handle 85 has a disk-like operation surface portion 850 partially facing the push button 650 in the push drive direction of the push button 650 (X-axis direction in FIG. 6A). A cylindrical side surface portion 851 extending downward from the outer peripheral edge of the operation surface portion 850, and a push driving direction of the push button 40 extending outward from the lower end of the side surface portion 851 (X in FIG. 6A). An annular skirt portion 852 partially facing the push button 40 in the axial direction), a cylindrical handle side rib 853 extending downward from the outer peripheral edge of the skirt portion 852, and a push switch from the operation surface portion 850 And a bearing 854 extending toward the periphery of the fixed shaft portion 651 of the attached volume 65. The outer peripheral surface of the handle side rib 853 is in contact with the inner peripheral surface of the body side rib 823.

  In addition, a storage portion 855 that stores the spring 86 is provided at a position facing the push button 650 in the operation surface portion 850. A concave portion 856 having a circular outer periphery is formed in the storage portion 855, and the lower end is formed from the bottom surface of the concave portion 856 so that the lower end is below the normal position on the back surface of the operation surface portion 850 (the broken line position in FIG. 6A). A protruding cylindrical portion 857 that protrudes is provided. By combining such a recessed portion 856 and the protruding portion 857, compared to the case where the protruding portion 857 protrudes from the back surface of the operation surface portion 850 without forming the recessed portion 856, the dimming switch 1c in the whole is provided. A space sufficient to accommodate the spring 86 can be secured in the X-axis direction in FIG. 6A without increasing the size in the X-axis direction in FIG. In addition, since the recessed part 856 is a part with respect to the whole operation surface part 850, the intensity | strength of the operation surface part 850 does not fall rapidly.

  The handle 85 having such a structure is housed in the container 80 so that the operation surface portion 850 is exposed to the outside from the front surface portion 820 of the cover 82, and is pushed in the direction of pushing by the user (downward in FIG. 6A). The push buttons 40 and 650 are pushed and driven by a push operation. When pushed by the handle 85, the push switch volume 65 is turned off when the push switch 4a is turned on, and the push switch volume 65 is turned on when the push switch 4a is turned off. The push switch 4a and the push switch-equipped volume 65 are adjusted in advance so as to be in a state.

  Next, the operation of the dimming switch 1c according to the fourth embodiment will be described with reference to FIG. 6 together with the case where the spring 86 is not provided. The operation strokes of the two push buttons 40 and 650 in the push switch 4a and the volume 65 with a push switch are the same distance. First, when the spring 86 is not provided, the operation surface portion 850 of the handle 85 and the push button 650 of the volume 65 with push switch are in contact with each other, but the skirt portion 852 of the handle 85 and the push button of the push switch 4a are in contact. It is separated from 40. When a push operation is performed on the handle 85 in such a state, the push button 650 is pushed, and when the push operation is further performed, the push button 650 is completely pushed. At this time, the push button 40 of the push switch 4a is also pushed and driven. However, since the push button 40 is normally separated from the skirt portion 852, even if the push button 650 is completely pushed, the push button 40 is not necessarily provided. It may not be fully pressed. For this reason, a situation occurs in which the electrical connection of the push switch 4a is not switched.

  On the other hand, when the spring 86 is provided like the dimming switch 1c according to the fourth embodiment, the handle 85 is positioned upward by the urging force of the spring 86 as shown in FIG. is doing. That is, the operation surface portion 850 of the handle 85 is in contact with the upper end of the spring 86, and the push button 650 of the volume 65 with push switch is in contact with the lower end of the spring 86. At this time, the skirt 852 of the handle 85 and the push button 40 of the push switch 4a are separated from each other. When the handle 85 is pushed downward in FIG. 6A in such a state, the handle 85 is first driven downward against the urging force of the spring 86, but the push button is pressed by the spring 86 contracting. Compared with the case where 650 is not pushed or provided with no spring 86, the distance that is pushed is shorter. When the pushing operation is further performed, the push button 650 is pushed and completely pushed (see FIG. 6B). On the other hand, since the push button 40 is pushed by the skirt 852 before the push button 650 is pushed, the push button 40 is completely pushed when the push button 650 is pushed completely (FIG. 6B). reference). Thereby, opening / closing of the electrical connection of the push switch 4a can be switched reliably.

  As described above, according to the fourth embodiment, even when the push switch function of the volume 65 with a push switch cannot be used as a power switch, the push switch 4a is used as the power switch, and the push switch is operated by pushing the handle 85. The opening / closing of the electrical connection 4a can be switched.

  In addition, by providing the spring 86, even if the operation stroke of the push button 40 of the push switch 4a is the same as that of the push button 650 of the push switch volume 65, the electrical connection of the push switch 4a can be reliably switched between open and closed. be able to.

  Further, since the handle 85 includes the storage portion 855 and the bearing 854 of the spring 86, when the user uses the handle 85 to push the push button 650 of the volume 65 with a push switch, the handle 85 can be rattled. It can reduce, and end pushing can be performed reliably. In addition, by providing the handle side rib 853 and the body side rib 823 at a position away from the fixed shaft portion 651 of the push switch volume 65, the shakiness of the handle 85 can be further reduced in the same manner as described above. End pushing can be performed more reliably, and the handle 85 can be prevented from tilting.

(Embodiment 5)
First, the structure of the light control switch 1d which concerns on Embodiment 5 of this invention is demonstrated using FIGS. This dimming switch 1d is similar to the dimming switch 1 of the first embodiment (see FIG. 1), in contrast to the triac 2, the pair of resistors 3, the LED circuit 5, the SBS 6, and the constant voltage circuit 62. Although it has a voltage generation circuit 63 and a capacitor 64, it has the following characteristic parts that are not included in the dimming switch 1 of the first embodiment.

  As shown in FIG. 7, the power switch of the dimming switch 1d is a push switch 4b, and the volume is a volume 65a with a push switch. The push switch 4b is for a weak electric circuit, and includes a push button 40a that is pushed by a push operation and switches between opening and closing of an electrical connection between both ends. Thereby, compared with the case where the push switch for high electric circuits is provided, the space which arrange | positions another component in a wiring module can be expanded.

  The volume 65a with a push switch includes a push button 650a that is pushed by a push operation, and a fixed shaft portion 651a that supports the push button 650a. The volume 65a with a push switch can change the resistance value when the push switch function is in the on state, and cannot change the resistance value when the push switch function is in the off state. In such a case, the push switch function of the volume with push switch 65a cannot be used as a power switch, and therefore a push switch 4b is separately provided as a power switch.

  In addition, the dimming switch 1d has an outside diameter of one module size of an embedded wiring device (for example, a large-angle continuous wiring device defined by Japanese Industrial Standards (JIS) (see JIS C8304)). The formed container body 80a is provided. The container body 80a includes a box-shaped body 81a having an opening and a cover 82a. A locking hole 812 is formed in the side surface portion 810a of the body 81a.

  The cover 82a includes a front surface portion 820a, a side surface portion 821a extending rearward from the end portion of the front surface portion 820a, a locking piece 822a extending rearward from the end portion of the side surface portion 821a, and a front surface portion 820a. A cylindrical vessel-side rib 823a (see FIG. 8A) provided so as to protrude inward from the back surface is integrally provided. An exposure window 824a that exposes an operation surface portion 850a of a handle 85a, which will be described later, is formed at the center of the front surface portion 820a, and an LED window 825a that exposes the LED 50 to the outside is formed at the upper right portion of the front surface portion 820a. Yes. Further, the cover 82a secures a space 827a below the exposure window 824a so that the handle 85a can move in the X-axis direction of FIG.

  The container body 80a is configured to lock the push switch 4b and the push switch volume 65a into two push buttons 40a and 650a by locking the locking hole 812 of the body 81a and the locking piece 822a of the cover 82a shown in FIG. Are stored so that the pushing drive directions of the two are the same.

  Furthermore, the dimming switch 1d is provided on the front side of the board block 83a including the push switch 4b and the volume 65a with push switch, the triac block 84a covering the board block 83a, and the push switch 4b and the volume 65a with push switch. The instrument body 80a includes a handle 85a and a spring 86a provided between the push button 650a of the volume 65a with push switch and the operation surface portion 850a of the handle 85a.

  The board block 83a includes a printed board 830a. The printed circuit board 830a has the push switch 4b and the push switch so that the push buttons 40a and 650a of the push switch 4b and the volume 65a with the push switch have the same push driving direction (X-axis direction in FIG. 7). A volume 65a is mounted.

  As shown in FIG. 8A, the handle 85a includes a disk-shaped operation surface portion 850a partially facing the push button 650a in the push drive direction of the push button 650a (the vertical direction in FIG. 8A). A cylindrical side surface portion 851a extending downward from the outer peripheral edge of the operation surface portion 850a, an annular skirt portion 852a extending outward from the lower end of the side surface portion 851a, and a push switch from the operation surface portion 850a. And a bearing 854a extending toward the periphery of the fixed shaft portion 651a of the volume 65a.

  A storage portion 855a for storing the spring 86a is provided at a position facing the push button 650a in the operation surface portion 850a. A concave portion 856a having a circular outer periphery is formed in the storage portion 855a, and a columnar protruding portion 857a is provided to protrude downward from the bottom surface of the concave portion 856a.

  Further, the handle 85a extends from the outer peripheral edge of the skirt portion 852a, and a handle side having a U-shaped cross section partially facing the push button 40a in the push driving direction of the push button 40a (vertical direction in FIG. 8A). Ribs 853a are provided. The handle-side rib 853a is extended from the inner side surface portion 870 extending from the skirt portion 852a, the bottom surface portion 871 extending outward from the lower end of the inner side surface portion 870, and the outer peripheral end of the bottom surface portion 871. An outer side surface portion 872 and four projecting portions 873,... (See FIG. 9) that are elongated in the vertical direction and project outward at equal intervals on the outer surface side of the inner side surface portion 870. As shown in FIG. 8B, the handle-side rib 853 is in contact with the inner peripheral surface of the body-side rib 823a at the tips of the four projecting portions 873,. That is, the handle side rib 853a is in surface contact with the outer peripheral surface of the body side rib 823a, and is held in line contact with the inner peripheral surface of the body side rib 823a at four locations. Note that the number of the protrusions 873 is not limited to four, and is appropriately set according to the application.

  As shown in FIG. 8A, the handle 85a having such a structure is housed in the container body 80a so that the operation surface portion 850a is exposed to the outside from the front surface portion 820a of the cover 82a, and is pushed in the direction of pushing by the user ( The push buttons 40a and 650a are pushed by the pushing operation in the downward direction of FIG. When pushed by the handle 85a, the push switch volume 65a is turned off when the push switch 4b is turned on, and the push switch volume 65a is turned on when the push switch 4b is turned off. The push switch 4b and the push switch-equipped volume 65a are adjusted in advance so as to be in a state.

  Next, the operation of the dimming switch 1d according to the fifth embodiment will be described with reference to FIG. 8 together with the case where the spring 86a is not provided. The operation strokes of the push buttons 40a and 650a in the push switch 4b and the push switch-equipped volume 65a are the same distance. First, when the spring 86a is not provided, the operation surface portion 850a of the handle 85a and the push button 650a of the volume 65a with a push switch are in contact with each other, but the handle side rib 853a of the handle 85a and the push switch 4b are pushed. It is separated from the button 40a. When a push operation is performed on the handle 85a in such a state, the push button 650a is pushed, and when the push operation is further performed, the push button 650 is completely pushed. At this time, the push button 40a of the push switch 4b is pushed and driven. However, since the push button 40a is separated from the handle-side rib 853a at the normal time, the push button 40a is not pushed even when the push button 650a is completely pushed. There is a possibility that it is not necessarily completely pushed. For this reason, a situation occurs in which the electrical connection of the push switch 4b is not switched.

  On the other hand, when the spring 86a is provided like the dimming switch 1d according to the fifth embodiment, the handle 85a is positioned upward by the biasing force of the spring 86a as shown in FIG. 8A. is doing. That is, the operation surface portion 850a of the handle 85a and the upper end of the spring 86a are in contact with each other, and the push button 650a of the volume with push switch 65a and the lower end of the spring 86a are in contact with each other. At this time, the skirt portion 852a of the handle 85a and the push button 40a of the push switch 4b are separated from each other. When the handle 85a is pushed downward in FIG. 8A in such a state, the handle 85a is first driven downward against the urging force of the spring 86a, but the push button is pushed by the contraction of the spring 86a. Compared with the case where 650a is not pushed or not provided with a spring 86a, the distance that is pushed is shorter. When the push operation is further performed, the push button 650 is pushed and completely pushed. On the other hand, since the push button 40a is pushed and driven by the handle-side rib 853a before the push button 650a is pushed, the push button 40a is completely pushed when the push button 650a is pushed completely. Thereby, opening / closing of the electrical connection of the push switch 4b can be switched reliably.

  As described above, according to the fifth embodiment, even when the push switch function of the volume 65a with a push switch cannot be used as a power switch, the push switch 4b is used as the power switch, and the push switch is operated by pushing the handle 85a. The opening / closing of the electrical connection 4b can be switched.

  Further, by providing the spring 86a, even if the operation stroke of the push button 40a of the push switch 4b is the same as that of the push button 650a of the volume 65a with a push switch, the electrical connection of the push switch 4b is reliably switched between open and closed. be able to.

  Further, the handle 85a includes the bearing 854a of the spring 86a and the storage portion 855a, so that when the user presses the push button 650a of the push switch-equipped volume 65a using the handle 85a, the handle 85a is rattled. It can reduce, and end pushing can be performed reliably. Further, by providing the handle side rib 853a and the body side rib 823a at a position away from the fixed shaft portion 651a of the push switch volume 65a, the rattling of the handle 85a can be further reduced in the same manner as described above. Pushing can be performed more reliably, and the handle 85a can be prevented from tilting.

  Further, the handle 85a and the body 80a are made smaller by making the contact area smaller than the case where the handle side rib 853a is in line contact with the inner peripheral surface of the body side rib 823a and in contact with the inner peripheral surface of the body side rib 823a. The friction generated between the two can be reduced, and the user can smoothly operate the handle 85a.

  As a modification of the fifth embodiment, the handle-side rib 853a of the handle 85a does not include the protruding portion 873, but the body-side rib 823a may include the protruding portion. Even in such a configuration, the user can smoothly operate the handle 85a as in the fifth embodiment.

  As a modification of the third to fifth embodiments, a diac 6a similar to that of the second embodiment may be provided instead of the SBS 6. Even with such a configuration, the same effects as those of the third to fifth embodiments are obtained, and the reference voltage generation circuit 63 (see FIG. 1) is not required. Therefore, the circuit configuration is simplified compared to the case where the SBS 6 is provided. can do.

  As a modification of the first to fifth embodiments, the resistance of one set of resistors 3 is not limited to two, but may be one or three or more. Moreover, it is not limited to a parallel connection, A serial connection may be sufficient and both a parallel connection and a serial connection may be used. Even if it is such a structure, there exists an effect similar to Embodiment 1-5.

  As another modification of the first to fifth embodiments, the volumes 611 and 612 are not limited to two, and may be one or three or more. Further, the volumes 611 and 612 are not limited to parallel connection but may be connected in series. Even if it is such a structure, there exists an effect similar to Embodiment 1-5.

  Furthermore, as another modification of the first to fifth embodiments, a unidirectional thyristor may be provided instead of the triac 2. Even if it is such a structure, there exists an effect similar to Embodiment 1-5.

It is a circuit diagram of Embodiment 1 of the present invention. The operation | movement of a light control switch is shown, Comprising: (a) is a wave form diagram of the light control switch of a prior art example, (b) is a wave form diagram of the light control switch which concerns on Embodiment 1 of this invention. It is a circuit diagram of Embodiment 2 of the present invention. It is a circuit diagram of the principal part of the light control switch which concerns on Embodiment 3 of this invention. It is a disassembled perspective view of the light control switch which concerns on Embodiment 4 of this invention. It is a principal part of the light control switch which concerns on the same as the above, Comprising: (a) is sectional drawing at the time of normal, (b) is sectional drawing at the time of steering wheel operation. It is a disassembled perspective view of the light control switch which concerns on Embodiment 5 of this invention. It is a light control switch concerning the same, Comprising: (a) is sectional drawing, (b) is AA sectional drawing of (a). It is a perspective view of the handle | steering_wheel of the light control switch which concerns on the same as the above. It is a circuit diagram of a conventional example.

Explanation of symbols

1, 1a to 1d Dimming switch 10 Main circuit 11 Weak electrical circuit 2 Triac 3 One set of resistors 4 Power switch 50 LED
6 SBS
61, 61a Time constant circuit 610 Capacitor 611, 612 Volume AC AC power supply L Lighting load

Claims (10)

A TRIAC that is inserted between the AC power source and the lighting load to form the main circuit;
A first resistor connected at one end to one of the main terminals of the triac;
A weak electric circuit provided on the other end side of the first resistor and applied with the voltage from the AC power source being dropped by the first resistor;
LEDs for informing the movable state of the illumination load;
A dimming switch comprising: a power switch that is connected in series with the LED and that opens and closes the electrical connection between both ends so that the triac is closed and the illumination load is moved. . An SBS that outputs a gate current to turn on the triac to the gate of the triac when a voltage difference between a voltage applied between the main terminals and a reference voltage applied to the gate exceeds a breakover voltage;
A first capacitor provided between the other end of the first resistor and the other of the main terminals of the triac, and a voltage based on a voltage between both ends being a voltage applied between the main terminals of the SBS;
A volume for adjusting a charging speed of the first capacitor by forming a series circuit with the first capacitor and varying a resistance value;
A reference voltage generating circuit that is provided between the other end of the first resistor and the gate of the SBS and that has a second resistor and a diode and applies the reference voltage to the gate of the SBS;
The dimming switch according to claim 1, further comprising: a second capacitor inserted between the gate of the SBS and the other of the main terminals of the triac in the light-electric circuit.   The dimmer switch according to claim 2, further comprising a volume with a three-way switch as the power switch and the volume. The power switch is a push switch having a first push button that is pushed by a push operation and switches between opening and closing of an electrical connection between both ends, and the volume is a second push button that is pushed by a push operation; A volume with a push switch having a fixed shaft portion for supporting the second push button,
A container for storing the push switch and the volume with the push switch so that the push drive directions of the first push button and the second push button are in the same direction;
An operation surface portion facing the second push button in the push driving direction, a side surface portion extending from an end portion of the operation surface portion, and the first push button extending from an end portion of the side surface portion; A skirt portion that opposes in the push drive direction, and is housed in the vessel so that the operation surface portion is exposed from one surface of the vessel, and the first push by the push operation in the push drive direction. The light control switch according to claim 2, further comprising a handle that push-drives the button and the second push button.   The dimming switch according to claim 4, further comprising an elastic body provided between the second push button of the volume with the push switch and an operation surface portion of the handle.   6. The dimming switch according to claim 5, wherein the handle includes a storage portion that is provided at a position facing the second push button of the push switch-equipped volume and stores the elastic body.   The dimmer switch according to any one of claims 4 to 6, wherein the handle includes a bearing extending from the operation surface portion toward a periphery of a fixed shaft portion of the volume with push switch. The vessel has a vessel-side rib provided inwardly protruding from the one surface,
The light control switch according to any one of claims 4 to 7, wherein the handle includes a handle side rib that extends from an end portion of the skirt portion and contacts an inner surface of the body side rib. The vessel has a vessel-side rib provided inwardly protruding from the one surface,
8. The handle according to claim 4, wherein the handle has a handle-side rib that is formed in a U-shaped cross section and extends from an end of the skirt portion and contacts an outer surface of the vessel-side rib. Dimming switch.   The light control switch according to claim 8 or 9, wherein the handle side rib and the container side rib are in line contact.

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