JP2019129093A - Dimming device - Google Patents

Abstract

To provide a dimming device capable of reducing failure occurring in a signal generating circuit even in the case where a power source line is connected to a signal terminal block erroneously.SOLUTION: A dimming device A1 includes a power source terminal block 11, a power source circuit K1, a signal generating circuit K2, a signal terminal block 15 and a housing 3. In the power source terminal block 11, a power source line is connected and an AC voltage is inputted. The power source circuit K1 converts the AC voltage into a DC voltage. To the signal terminal block 15, signal lines W21, W22 are connected. In the signal generating circuit K2, a DC voltage V3 is inputted as a drive power source, and the signal generating circuit generates a dimming signal for instructing a dimming level of a lighting fixture, and outputs the dimming signal from the signal terminal block 15 via the signal lines. The housing 3 stores the power source terminal block 11, the power source circuit K1 and the signal terminal block 15. The housing 3 includes a partition wall 32 for partitioning the power source terminal block 11, the power source circuit K1 and the signal terminal block 15 and the signal generating circuit K2.SELECTED DRAWING: Figure 1

Description

  The present invention generally relates to a light control device.

  Conventionally, there is a dimmer for setting the dimming level of the lighting fixture.

  For example, in the dimmer described in Patent Document 1, the case cover is fixed on the back surface of the mounting plate, and the case cover houses the laminated circuit board. The laminated circuit board includes a power supply circuit board and a control circuit board.

JP 2017-98339 A

  In the dimmer (dimming device) of Patent Document 1 described above, the power circuit board constitutes a high-power circuit having a relatively high voltage, and the control circuit board is a weak-power circuit having a relatively low voltage. Are configured. The power circuit board and the control circuit board are housed in the case cover.

  Generally, the power supply circuit board (power supply circuit) is mounted with a power supply terminal block to which power lines are connected, and the control circuit board (signal generation circuit) is mounted with a signal terminal block to which signal lines are connected. ing. In this case, the power supply line is connected to a high-power circuit, and a relatively high voltage is transmitted to the power supply line. Further, the signal line is connected to a weak electric system circuit, and a relatively low voltage is transmitted to the signal line.

  However, if an erroneous connection that mistakenly connects the power supply line to the signal terminal block occurs, a malfunction of the control circuit board (signal generation circuit) may occur.

  An object of the present invention is to provide a dimming device that can reduce problems caused in a signal generation circuit even when a power supply line is mistakenly connected to a signal terminal block.

  A light control device according to one aspect of the present invention includes a power supply terminal block, a power supply circuit, a signal terminal block, a signal generation circuit, and a housing. The power supply terminal block is connected to a power supply line and receives an AC voltage. The power supply circuit converts the AC voltage into a DC voltage. The signal terminal block is connected to a signal line. The signal generation circuit receives the DC voltage as a driving power source, generates a dimming signal for instructing a dimming level of a lighting fixture, and transmits the dimming signal from the signal terminal block via the signal line. Output The housing houses the power terminal block, the power circuit, and the signal terminal block. The housing has the power supply terminal block, the power supply circuit, and a partition that separates the signal terminal block from the signal generation circuit.

  As described above, the present invention has an effect that it is possible to reduce problems occurring in the signal generation circuit even when the power supply line is erroneously connected to the signal terminal block.

FIG. 1 is an exploded perspective view showing the configuration of the light control device of the embodiment. FIG. 2 is a perspective view showing the light control device. FIG. 3 is an exploded perspective view showing the light control device, the mounting frame, and the decorative plate. FIG. 4 is a perspective view showing a light control device to which the same mounting frame and decorative plate are attached. FIG. 5 is a block diagram showing a circuit of the light control device. FIG. 6 is an exploded perspective view of the light control device casing and the power supply board unit of the same as seen obliquely from the rear. FIG. 7 is an exploded perspective view of the light control device casing and the power supply board unit of the same as seen obliquely from the front. FIG. 8 is a rear view of the housing of the light control device and the power supply board unit of the same viewed from the rear. FIG. 9 is an exploded perspective view showing an auxiliary plate and a control board unit of the light control device.

  The following embodiments generally relate to a light control device. More specifically, the following embodiments relate to a light control device including a power supply circuit and a signal generation circuit.

  The light control device of this embodiment is demonstrated with reference to FIGS.

  1 and 2 show the configuration of the light control device A1. As shown in FIGS. 3 and 4, the light control device A <b> 1 is attached to a rectangular frame-like mounting frame 6, and a decorative cover 7 is attached to the front surface of the light control device A <b> 1. In the following description, unless otherwise specified, each direction of up, down, left and right in FIG. 1 is defined. In addition, each direction of up and down, right and left referred to in this embodiment is used for convenience of description of the light control device A1, and is not used to limit the embodiment of the light control device A1. .

  As illustrated in FIG. 1, the light control device A1 includes a power supply substrate unit 1, a control substrate unit 2, a housing 3, an auxiliary plate 4, and a light control operation unit 5.

  FIG. 5 shows a block diagram of an electric circuit composed of the power supply board unit 1 and the control board unit 2. The power supply board unit 1 and the control board unit 2 are electrically connected by wire harnesses Ws provided with connectors at both ends of the electric wires.

  The power supply substrate unit 1 includes a power supply terminal block 11, a filter 12, a rectifier circuit 13, a DC power supply circuit 14, a signal terminal block 15, and a receptacle 16. The filter 12, the rectifier circuit 13, and the DC power circuit 14 constitute a power circuit K1. The power supply substrate unit 1 includes a circuit of a high voltage system (a power supply circuit K1, a power supply terminal block 11 or the like) having a relatively high voltage, and mainly handles commercial alternating voltage.

  The control board unit 2 includes a DC conversion circuit 21, a microcomputer 22, a dimming variable resistor 23, a dimming signal output circuit 24, an overcurrent detection circuit 25, and a receptacle 26. The DC conversion circuit 21, the microcomputer 22, and the dimming signal output circuit 24 constitute a signal generation circuit K2. The control board unit 2 includes a weak electric system circuit (such as the signal generation circuit K2) having a relatively low voltage, and mainly handles a DC low voltage.

  The power terminal block 11 has a pair of input terminals 11a and 11b. A pair of power supply lines W11 and W12 are connected to the pair of input terminals 11a and 11b. The pair of power supply lines W11 and W12 are electrically connected to a commercial power system, and between the pair of power supply lines W11 and W12, AC voltage V1 (AC voltage in the range of effective value 100 V to 240 V) Is applied. Accordingly, the AC voltage V1 is also applied between the pair of input terminals 11a and 11b.

  The pair of input terminals 11a and 11b are electrically connected to the power supply circuit K1, and the power supply circuit K1 converts the AC voltage V1 into a DC voltage V3.

  Specifically, in the power supply circuit K 1, the pair of input terminals 11 a and 11 b are electrically connected to the DC power supply circuit 14 through the filter 12 and the rectifier circuit 13. The filter 12 includes both an inductor and a capacitor, or one of the inductor and the capacitor, and attenuates unnecessary components such as a noise component and a harmonic component from the AC voltage V1. After passing through the filter 12, the AC voltage V1 is full-wave rectified (or half-wave rectified) by the rectifier circuit 13 and converted into a rectified voltage V2. The rectifier circuit 13 includes a diode bridge having a plurality of diodes.

  The DC power supply circuit 14 converts the rectified voltage V2 into a DC voltage V3 (for example, 13.5 V). The DC power supply circuit 14 of this embodiment is an insulating switching power supply circuit, and constitutes a step-up / down chopper circuit or a step-down chopper circuit. The configuration of the DC power supply circuit 14 is not limited to a specific configuration, and may be an insulated power supply circuit, a non-insulated power supply circuit, a switching power supply circuit, a linear power supply circuit, a buck-boost chopper circuit, a buck chopper circuit, a boost chopper circuit, etc. It may be either. The DC voltage V3 is output to the signal generation circuit K2 via the receptacle 16, the wire harness Ws, and the receptacle 26.

  The signal generation circuit K2 receives the DC voltage V3 as a drive power supply, and generates a dimming signal Y2 for instructing the dimming level of the lighting fixture.

  Specifically, in the signal generation circuit K2, the DC conversion circuit 21 converts the DC voltage V3 into a DC control voltage V4 (for example, 3.3 V or 5 V). The DC conversion circuit 21 of the present embodiment is a step-down linear power supply circuit, and the control voltage V4 is output to the microcomputer 22 and used as an operating power supply for the microcomputer 22.

  The actuator of the dimming variable resistor 23 is mechanically connected to a dimming operation unit 5 described later, and the resistance value of the dimming variable resistor 23 is the rotation of the dimming operation unit 5. Change in conjunction with

  The microcomputer 22 is a computer system and mainly includes a processor and memory as hardware. When the processor executes the program recorded in the memory, the dimming signal generation function in this embodiment is realized. A dimming variable resistor 23 is electrically connected to the input port of the microcomputer 22, and the microcomputer 22 detects the voltage Vs across the dimming variable resistor 23 to adjust the dimming variable resistor 23. The light control level set by the light operation unit 5 can be indirectly detected. The microcomputer 22 outputs a light control signal of a PWM signal Y1 which is a voltage signal which is PWM (Power Width Modulation) modulated to a duty (on duty or off duty) corresponding to the light control level set by the light control operation unit 5. It outputs to the circuit 24.

  The dimming signal output circuit 24 amplifies the PWM signal Y1 to generate the dimming signal Y2. That is, the dimming signal Y2 is a voltage signal PWM-modulated to a duty corresponding to the dimming level. The dimming signal Y2 is output to the signal terminal block 15 via the receptacle 26, the wire harness Ws, and the receptacle 16.

  The signal terminal block 15 includes a pair of output terminals 15a and 15b, and the dimming signal Y2 is output through the pair of output terminals 15a and 15b. A pair of signal lines W21 and W22 are connected to the pair of output terminals 15a and 15b. The pair of signal lines W21 and W22 are electrically connected to the control device of the lighting apparatus, and the dimming signal Y2 is output from the pair of output terminals 15a and 15b to the pair of signal lines W21 and W22. The control apparatus of a lighting fixture adjusts the light control level of a lighting fixture based on the light control signal Y2.

  The overcurrent detection circuit 25 detects the value of the current (output current) flowing through the output terminals 15a and 15b, and stops the output of the dimming signal output circuit 24 when the value of the output current exceeds a threshold value. Therefore, when the pair of signal lines W21 and W22 is short circuited or grounded, the output of the dimming signal output circuit 24 is stopped to ensure the safety.

  Next, the arrangement of the power supply board unit 1 and the control board unit 2 will be described.

First, as shown in FIGS. 6 and 7, the housing 3 includes a case 31 and a partition 32. Then, by combining the case 31 and the partition wall 32, the housing 3 is formed in a hollow rectangular box shape, and accommodates the power supply substrate unit 1. The case 31 and the partition wall 32 are flame-retardant synthetic resin molded products, for example, polybutylene terephthalate (PBT: Polybutylene).
terephthalate) resin. Further, the case 31 and the auxiliary plate 4 constitute an apparatus main body (housing) 8 which constitutes an outer shell of the light control apparatus A1.

  The power supply board unit 1 includes a first board 10 having a rectangular plate shape whose vertical dimension is longer than the horizontal dimension. The electric components P1 constituting the power supply terminal block 11, the power supply circuit K1 (filter 12, rectifier circuit 13, DC power supply circuit 14), the signal terminal block 15, the receptacle 16 and the like are mounted on the first substrate 10 There is. Conductors are formed on the first surface (rear surface) 10a and the second surface 10b (front surface) of the first substrate 10, and the plurality of electrical components P1 are electrically connected via the conductors.

  The power terminal block 11 is mounted on the lower left side of the first surface 10 a of the first substrate 10, and the signal terminal block 15 is mounted on the upper right side of the first surface 10 a of the first substrate 10. The filter 12, the rectifier circuit 13, and the DC power supply circuit 14 are formed by electrical components P1 such as a resistor, a capacitor, a coil, and an integrated circuit (IC) element mounted on the first surface 10 a and the second surface 10 b of the first substrate 10. Each is configured. Note that the first substrate 10 may be a multilayer substrate in which a conductor is formed.

  The first substrate 10 has a trapezoidal plate-shaped protruding piece 101 at the center of each of the left side and the right side along the vertical direction. The first substrate 10 has a rectangular cutout 102 on the left side of the upper side along the left-right direction.

  The partition wall 32 includes a rectangular plate-shaped partition wall main body 321 whose vertical dimension is longer than the horizontal dimension. The first surface 32 a (rear surface) of the partition main body 321 faces the second surface 10 b of the first substrate 10, and the second surface 32 b (front surface) of the partition main body 321 faces the control substrate unit 2.

  On the left side of the upper side of the partition wall body 321, a rectangular wiring recess 32c is formed. At the center of each of the left side and the right side of the partition body 321, a rectangular plate-like convex part 32 e that is long in the vertical direction is formed. A rectangular plate-shaped mounting plate 32f is provided at the tip of each of the convex portions 32e so as to project rearward. A rectangular notch 32g is formed at the center in the vertical direction of the rear end (front end) of the placement plate 32f. At the periphery of the first surface 32a of the partition body 321 (between the pair of mounting plates 32f), a side wall 32h is formed toward the rear. Furthermore, four cutouts 32i that are cut out in a rectangular shape from the rear end (front end) to the front are formed in the side wall 32h. The notches 32i are respectively formed on the upper side of the mounting plate 32f on the left side of the partition main body 321, the upper side and the lower side of the mounting plate 32f on the right side of the partition main body 321, and the center of the lower side of the partition main body 321. Under the left side of the side wall 32h, a U-shaped rib 32m in which the side wall 32h bypasses inward is formed. Further, on the first surface 32a of the partition main body 321, a linear rib 32j extending in the left-right direction is formed between the pair of mounting plates 32f, and a loading that protrudes rearward on the right end side of the rib 32j A placement piece 32k is formed.

  The first substrate 10 is disposed behind the partition wall 32 so that the second surface 10 b faces the first surface 32 a of the partition wall 32. The rear end (front end) of the side wall 32h of the partition wall 32 is in contact with the outer edge of the second surface 10b. Further, the protruding piece 101 of the first substrate 10 is fitted into the notch 32g of the mounting plate 32f. Further, the placing piece 32k of the partition wall 32 abuts on the second surface 10b. Further, the left end and the right end of the partition wall body 321 are in contact with the inner surface of the mounting plate 32f. As described above, the first substrate 10 is positioned with respect to the partition wall 32, and movement of the first substrate 10 in the forward direction, the left-right direction, and the up-down direction is restricted. A space is formed between the first surface 32 a of the partition wall body 321 and the second surface 10 b of the first substrate 10 by the side wall 32 h and the mounting piece 32 k, and the second surface 10 b of the first substrate 10. Interference between the electrical component P1 mounted on the partition wall body 321 and the partition wall body 321 is prevented. The side wall 32 h, the notch 32 g, and the mounting piece 32 k described above correspond to a support portion that supports the first substrate 10.

  As shown in FIGS. 6 and 7, the case 31 has a rectangular box-shaped case main body 311, and an opening 310 is formed on the front surface of the case main body 311. The case body 311 has a rectangular plate-shaped bottom wall 31a, plate-like side walls 31b and 31c provided forward from the left and right side edges of the bottom wall 31a, and front sides from upper and lower side edges of the bottom wall 31a. And plate-like side walls 31d and 31e provided respectively.

  On the inner surface of the case main body 311, six columnar ribs 31 f extending in the front-rear direction are formed. The three ribs 31f are arranged along the vertical direction on the inner surface of the side wall 31b. The three ribs 31f are arranged along the vertical direction on the inner surface of the side wall 31c. Each front end of the rib 31f has the same position in the front-rear direction. Furthermore, square frustum-shaped convex portions 31g extending in the front-rear direction are formed on the upper and lower portions of the inner surfaces of the side walls 31b and 31c, respectively. And in each inner surface of the side walls 31b and 31c, the recessed part 31q is formed between a pair of convex parts 31g.

  Furthermore, a rectangular protrusion 31h is formed at the lower left corner of the inner surface of the bottom wall 31a, and a rectangular hole 31i to be inserted in the front-rear direction is formed in the protrusion 31h. A rectangular stand 31j is formed at the upper right corner of the inner surface of the bottom wall 31a, and a rectangular hole 31k to be inserted in the front-rear direction is formed in the stand 31j.

  The partition wall 32 combined with the power supply substrate unit 1 covers the opening 310 of the case 31 so that the first surface 10a of the first substrate 10 faces the bottom wall 31a. At this time, the outer edge of the partition main body 321 is fitted into the inner edge of the opening 310, and the convex portions 32e of the partition 32 are respectively fitted into the concave portions 31q of the case main body 311, whereby one housing 3 is configured. Then, the rearward movement of the first substrate 10 is restricted by the first surface 10a of the first substrate 10 coming into contact with the front end (tip) of the rib 31f. Further, the left side end and the right side end of the first substrate 10 abut the convex portion 31 g, thereby restricting the movement of the first substrate 10 in the left-right direction. Further, the upper and lower ends of the first substrate 10 are in contact with the inner surfaces of the side walls 31d and 31e, so that the vertical movement of the first substrate 10 is restricted.

  As described above, the power supply board unit 1 is housed in the housing 3 and positioned with respect to the case 31 and the partition wall 32.

  When the power supply substrate unit 1 is housed in the housing 3, as shown in FIG. 8, the rear part of the power supply terminal block 11 fits into the hole 31i, and the rear surface of the power supply terminal block 11 faces the housing 3 toward the rear. Exposed to the outside. At the lower left corner of the outer surface of the bottom wall 31a of the case 31, a recess 31m corresponding to the projection 31h on the inner surface of the bottom wall 31a is formed. On the outer surface of the case 31, a hole 31i is formed in the recess 31m.

  Then, on the rear surface of the power supply terminal block 11, a pair of inlets 111 and 111 are formed, and a release button 112 is disposed. The pair of inlets 111 correspond to the pair of input terminals 11a and 11b, respectively. Then, with the release button 112 pressed, the power supply lines W11 and W12 (see FIG. 5) are inserted into the inlet 111, and when the release button 112 is released from the pressed state, the power supply lines W11 and W12 are input terminals 11a. , 11b. Further, when the release button 112 is pressed, the connection state of the power supply lines W11 and W12 to the input terminals 11a and 11b is released, and the power supply lines W11 and W12 can be pulled out from the inlet 111.

  Further, the rib 32m (see FIG. 6) of the partition wall 32 faces the front of the power supply terminal block 11. Therefore, even when a forward force is applied to the power supply terminal block 11 during the connection work and the removal work of the power supply lines W11 and W12, the deformation of the first substrate 10 can be suppressed by the ribs 32m.

  As shown in FIG. 8, the rear portion of the signal terminal block 15 is fitted into the hole 31k, and the rear surface of the signal terminal block 15 is exposed outside the case 31 toward the rear. A recess 31n corresponding to the protrusion 31j on the inner surface of the bottom wall 31a is formed in the upper right corner of the outer surface of the bottom wall 31a. On the outer surface of the case 31, a hole 31k is formed in the recess 31n.

  Then, on the rear surface of the signal terminal block 15, a pair of inlets 151 and 151 are formed, and a screw 152 is disposed. The pair of inlets 151 correspond to the pair of output terminals 15a and 15b, respectively. Then, while the screw 152 is loosened, the signal wires W21 and W22 are inserted into the inlet 151, and when the screw 152 is tightened, the signal wires W21 and W22 are connected to the output terminals 15a and 15b. Further, by loosening the screw 152, the connection state of the signal lines W21 and W22 to each of the output terminals 15a and 15b is released, and the signal lines W21 and W22 can be pulled out from the inlet 151.

  Next, as shown in FIG. 9, the control board unit 2 is attached to the auxiliary plate 4.

  The control substrate unit 2 includes a rectangular second substrate 20 whose vertical dimension is longer than the horizontal dimension. Cutouts 201 to 204 are formed in the four corners of the second substrate 20, respectively. The electric components P2 constituting the signal generation circuit K2 (DC conversion circuit 21, microcomputer 22, dimming signal output circuit 24), dimming variable resistor 23, overcurrent detection circuit 25, and receptacle 26 are respectively The second substrate 20 is mounted on the first surface (front surface) 20 a and the second surface 20 b (rear surface) of the second substrate 20. Conductors are formed on the first surface 20a and the second surface 20b of the second substrate 20, and the plurality of electrical components P2 are electrically connected via the conductors. The DC conversion circuit 21, the microcomputer 22, the dimming signal output circuit 24, and the overcurrent detection circuit 25 are resistors, capacitors, coils, ICs (ICs) mounted on the first surface 20a and the second surface 20b of the second substrate 20. Integrated circuit) is constituted by an electrical component P2 such as an element. Note that the second substrate 20 may be a multilayer substrate in which a conductor is formed.

  The dimming variable resistor 23 and the receptacle 26 are mounted on the first surface 20a of the second substrate 20 (see FIG. 1). Then, the connector at one end of the wire harness Ws (see FIG. 5) is connected to the receptacle 26, and the other end of the wire harness Ws is pulled out to the second surface 20 b of the second substrate 20 through the notch 204. Be The wire harness Ws passes through the wiring recess 32c and the notch 102 (see FIG. 1), and the connector at the other end of the wire harness Ws is connected to the receptacle 16 (see FIG. 6). Therefore, the power supply substrate unit 1 and the control substrate unit 2 can be isolated by the partition wall 32, and the power supply substrate unit 1 and the control substrate unit 2 can be electrically connected.

  The auxiliary plate 4 has a rectangular box-shaped plate body 41, and an opening 410 is formed on the rear surface of the plate body 41. The plate body 41 has a rectangular plate-shaped bottom wall 41a, plate-like side walls 41b and 41c provided forward from the left and right side edges of the bottom wall 41a, and front sides from upper and lower side edges of the bottom wall 41a. And plate-like side walls 41d and 41e provided respectively. The auxiliary plate 4 is a synthetic resin molded product, and is made of, for example, ABS (Acrylonitrile Butadiene Styrene) resin, ASA (Acrylate Styrene Acrylonitrile) resin, or PBT resin.

  Ribs 41f extending in the vertical direction are formed on the inner surfaces of the side walls 41b and 41c, respectively. That is, the front of each of the inner surfaces of the side walls 41b and 41c has a step structure that protrudes inward from the rear by the rib 41f. And the 1st surface 20a of the 2nd board | substrate 20 contact | abuts to the rear end of the rib 41f, and the movement to the front direction of the 2nd board | substrate 20 is controlled.

  Circular holes 41g and 41h are formed in the bottom wall 41a. And the axis | shaft 23a (refer FIG. 1) of the variable resistor 23 for light control which the control board unit 2 has penetrates the hole 41g from the back to the front. When the shaft 23a rotates, the resistance value of the dimming variable resistor 23 changes. Also, the variable resistor 27 for setting the lower limit value is mounted on the first surface 20a of the second substrate 20 (see FIG. 1), and the shaft 27a (see FIG. 1) of the variable resistor 27 is located behind the hole 41h. Through from the front. When the shaft 27a rotates, the resistance value of the dimming variable resistor 27 changes. The microcomputer 22 controls the lower limit level of dimming based on the voltage across the variable resistor 27.

  Cylindrical bosses 41i and 41j are provided on the inner surface of the bottom wall 41a, and screw holes are respectively formed along the front-rear direction (axial direction of the bosses 41i and 41j) from the tip end face of the bosses 41i and 41j. There is. The second substrate 20 is formed with an arc-shaped notch 20c continuous with the notch 204 at a position facing the boss 41i, and a circular hole 20d is formed at the position facing the boss 41j. Then, the two screws 91 and 91 are inserted through the notches 20c and the holes 20d from the rear to the front, and are tightened into the screw holes of the bosses 41i and 41j. As a result, the control board unit 2 is fixed to the auxiliary plate 4 by the two screws 91 and 91.

  In addition, a handle 41k operated by a user to switch between lighting and extinguishing of the lighting fixture is attached to the lower portion of the auxiliary plate 4 so as to be movable in the front-rear direction. An operation piece 41m is formed on the rear surface of the handle 41k. On the other hand, the push button switch 28 (electrical component P2) is mounted on the first surface 20a of the second substrate 20 so as to face the operation piece 41m. When the handle 41k is operated, the tip of the operation piece 41m depresses the actuator of the push button switch 28, whereby the microcomputer 22 of the control board unit 2 can detect whether the handle 41k is operated. The microcomputer 22 starts and stops outputting the PWM signal Y1 by operating the handle 41k.

  In addition, an LED element (electrical component P2) is mounted on the first surface 20a of the second substrate 20. When the lighting fixture is controlled to be turned off by operating the handle 41k, the LED element is turned on. A translucent lamp cover 41n is attached to the left side of the handle 41k. The light emitted from the LED element passes through the lamp cover 41n and is emitted in front of the handle 41k. The LED element may be lit when the lighting fixture is controlled to be turned on by operating the handle 41k.

  Then, as shown in FIG. 1, the housing 3 and the auxiliary plate 4 are combined with the front surface of the housing 3 facing the rear surface of the plate main body 41. At four corners of the inner surface of the plate body 41, four column-shaped ribs 41p (see FIG. 9) extending in the front-rear direction are formed. On the other hand, a linear convex wall 32n (see FIG. 7) is formed on the periphery of the second surface 32b of the partition main body 321, and the upper left corner, the upper right corner, and the lower edge of the second surface 32b are further formed. Ribs 32p (see FIG. 7) extending forward from the convex walls 32n are respectively formed. Then, when the housing 3 and the auxiliary plate 4 are combined, the front end of the case 31 and the rear end of the plate main body 41 fit in each other, and the end face of the rib 32p and the end face of the rib 41p face each other or abut.

  The case 31 is provided with a pair of assembly protrusions 31p on the outer surfaces of the side walls 31b and 31c. In the side walls 31b and 31c, the pair of assembly protrusions 31p are provided side by side in the longitudinal direction (vertical direction) of the case 31.

  On each of the side walls 41b and 41c of the auxiliary plate 4, a pair of assembly pieces 41q extends from the rear edge toward the rear. An assembly hole 41r is formed in each assembly piece 41q. The housing 3 (case 31) and the auxiliary plate 4 are coupled by engaging the corresponding assembly projection 31p with the assembly hole 41r (see FIG. 10).

  The dimming operation unit 5 is attached to the shaft 23 a of the dimming variable resistor 23 from the front of the auxiliary plate 4. Then, when the light adjustment operation unit 5 rotates, the shaft 23a also rotates in the same direction, and the resistance value of the light adjustment variable resistor 23 changes. When the dimming operation unit 5 rotates in one direction, the resistance value of the variable resistor 23 increases, and when the dimming operation unit 5 rotates in the other direction, the resistance value of the variable resistor 23 decreases. The light control operation portion 5 is a synthetic resin molded product, and is made of, for example, ABS (Acrylonitrile Butadiene Styrene) resin, ASA (Acrylate Styrene Acrylonitrile) resin, or PBT resin.

  Therefore, in the above-described light control device A1, the power supply substrate unit 1 of the power supply substrate unit 1 and the control substrate unit 2 is accommodated in the housing 3. That is, a partition wall 32 is disposed between the power supply board unit 1 and the control board unit 2, and the partition wall 32 mechanically isolates the power supply board unit 1 and the control board unit 2 from each other. Further, not only the power terminal block 11 but also the signal terminal block 15 is mounted on the power board unit 1, and the partition wall 32 mechanically isolates the signal terminal block 15 and the control board unit 2 from each other.

  Therefore, the light control device A1 can suppress the influence on the control board unit 2 by the partition wall 32 even when the power supply lines W11 and W12 are erroneously connected to the signal terminal block 15. That is, even when the power supply lines W11 and W12 are erroneously connected to the signal terminal block 15, the light control apparatus A1 can reduce the problems caused in the control board unit 2.

  As a result, the light control device A1 can simplify the protective device, and thus can be downsized as compared with the prior art.

  The above-described light control device A1 is attached to the attachment frame 6 as shown in FIGS.

  The mounting frame 6 is formed of a hot-dip galvanized steel sheet (SGCC) in a rectangular frame shape having a window hole 61 to which the light control device A1 is attached. The mounting frame 6 has a pair of first beam portions 6a facing each other across the window hole 61 in the longitudinal direction (vertical direction), and a direction intersecting the direction in which the pair of first beam portions 6a are opposed (left-right direction). And a pair of second beam portions 6b facing each other across the window hole 61. That is, a space surrounded by the pair of first beam portions 6 a and the pair of second beam portions 6 b is a window hole 61.

  In each of the pair of first beam portions 6a, a screw for fixing the first beam portion 6a to the building material in a state where the back side of the first beam portion 6a is in contact with the surface of the building material (for example, wall material) An insertion hole 6c for inserting (not shown) is provided. Each of the pair of first beam portions 6a is provided with a screw hole 6d outside the insertion hole 6c and in the center in the left-right direction.

  Each of the pair of second beam portions 6b is formed in an L-shaped cross-sectional shape when viewed from the vertical direction. The horizontal dimension of the front part of the auxiliary plate 4 is shorter than the horizontal dimension of the rear part of the auxiliary plate 4, and step portions 41 s are formed on the side walls 41 b and 41 c. Then, the front portion of the auxiliary plate 4 is inserted between the pair of second beam portions 6b, and the second beam portion 6b is fitted into the step portion 41s. At this time, the insertion holes 6e provided at the four corners of the window hole 61 and the screw holes 41t provided respectively on the upper side and the lower side of the step portion 41s of the auxiliary plate 4 communicate with each other in the front-rear direction. Then, four screws 92 pass through the four insertion holes 6e from the front to the rear, respectively, and are tightened into the four screw holes 41t, respectively.

  As described above, the dimmer A1 is fixed to the mounting frame 6 by the four screws 94, and the dimmer A1 is mounted on the mounting frame 6 with the front end portion of the auxiliary plate 4 projecting forward from the window hole 61. Attached to

  The mounting frame 6 is fixed to the building material in a state where the rear surface side is in contact with the surface of the building material, and the light control device A1 is mounted in the hole for embedding formed in the structure material with the rear portion of the light control device A1. It is attached to the surface of the construction material in the stored state. That is, the light control device A1 is used as an embedded wiring device.

  Next, the decorative cover 7 attached to the front side of the attachment frame 6 will be described. As shown in FIGS. 3 and 4, the decorative cover 7 includes a front wall 7 a and a side wall 7 b that are integrally formed as a synthetic resin molded body. A locking projection 41u is formed on each front end of the side walls 41d and 41e of the auxiliary plate 4, and a pair of locking claws locked to the pair of locking projections 41u are formed on the rear surface of the front wall 7a. ing. And the decorative cover 7 is attached to the front surface of the light control apparatus A1 because a pair of latching claw provided in the rear surface of the front wall 7a each latches to a pair of latching protrusion 41u. The decorative cover 7 is a synthetic resin molded product, and is made of, for example, ABS resin, ASA resin, or PBT resin.

  Further, the front wall 7a is formed with a circular hole 7c and a rectangular hole 7d, which are inserted in the front-rear direction. The dimming operation unit 5 is inserted into the hole 7c, and the decorative cover 7 is attached to the dimming device A1 with the dimming operation unit 5 protruding forward from the hole 7c. Further, the handle 41k is inserted into the hole 7d, and the decorative cover 7 is attached to the light control device A1 with the handle 41k protruding forward from the hole 7d.

(Summary)
The light control apparatus A1 according to the first aspect of the above-described embodiment includes the power supply terminal block 11, the power supply circuit K1, the signal terminal block 15, the signal generation circuit K2, and the housing 3. The power supply terminal block 11 is connected to the power supply lines W11 and W12 and receives an AC voltage V1. The power supply circuit K1 converts the AC voltage V1 into a DC voltage V3. The signal terminal block 15 is connected to signal lines W21 and W22. The signal generation circuit K2 receives a DC voltage V3 as a drive power supply, generates a light adjustment signal Y2 for instructing a light adjustment level of the lighting apparatus, and performs light adjustment from the signal terminal block 15 via the signal lines W21 and W22. The optical signal Y2 is output. The housing 3 accommodates the power supply terminal block 11, the power supply circuit K1, and the signal terminal block 15. The housing 3 includes a power terminal block 11, a power circuit K1, and a partition wall 32 that separates the signal terminal block 15 and the signal generation circuit K2.

  Of the power supply circuit K1 and the signal generation circuit K2, the power supply circuit K1 is accommodated in the housing 3 in the above-described light adjustment device A1. That is, the partition wall 32 is disposed between the power supply circuit K1 and the signal generation circuit K2, and the partition wall 32 mechanically isolates the power supply circuit K1 and the signal generation circuit K2 from each other. Further, the housing 3 accommodates not only the power terminal block 11 but also the signal terminal block 15, and the partition wall 32 mechanically isolates the signal terminal block 15 and the signal generation circuit K2 from each other.

  Therefore, even if the power supply lines W11 and W12 are erroneously connected to the signal terminal block 15, the light control device A1 can suppress the influence on the signal generation circuit K2 by the partition wall 32. That is, even when the power supply lines W11 and W12 are erroneously connected to the signal terminal block 15, the light control apparatus A1 can reduce the problem caused in the signal generation circuit K2.

  In the light control device A1 of the second aspect according to the embodiment, in the first aspect, the signal generation circuit K2 is disposed forward of the partition wall 32, and the housing 3 is a hole for exposing the signal terminal block 15. 31k is preferably provided on the rear surface.

  In the above-described light control device A1, the signal terminal block 15 is exposed to the rear of the housing 3, and the signal generation circuit K2 is disposed in front of the partition wall 32. Therefore, even when the power supply lines W11 and W12 are mistakenly connected to the signal terminal block 15, it is possible to further reduce the problems that occur in the signal generation circuit K2.

  Moreover, in the light control apparatus A1 of the 3rd aspect which concerns on embodiment, it is the 2nd aspect. WHEREIN: The housing | casing 3 is directly or indirectly attached, and is provided with the attachment frame 6 fixed to the front surface of a construction material, 3 is preferably embedded in the opening of the construction body.

  Therefore, since the signal terminal block 15 is located on the back side of the building (for example, a wall surface), the front side of the building (for example, indoor space) even when the power supply lines W11 and W12 are erroneously connected to the signal terminal block 15 It is possible to reduce the impact on

  Moreover, in the light control apparatus A1 of the 4th aspect which concerns on embodiment, in any one of the 1st thru | or 3rd aspect, the power supply board unit 1 and the control board unit 2 are provided, and the housing | casing 3 is the following. It is preferable to store the power supply board unit 1. The power board unit 1 includes a first board 10 on which a power terminal block 11, a power circuit K1, and a signal terminal block 15 are mounted. The control board unit 2 includes a second board 20 on which the signal generation circuit K2 is mounted.

  Of the power supply substrate unit 1 and the control substrate unit 2, the power supply substrate unit 1 is accommodated in the housing 3 in the above-described light adjustment device A 1. That is, the housing 3 separates the power supply board unit 1 and the control board unit 2 from each other. Therefore, even when the power supply lines W11 and W12 are erroneously connected to the signal terminal block 15, the light control apparatus A1 can reduce the problems caused in the control board unit 2.

  Moreover, in the light control apparatus A1 of the 5th aspect which concerns on embodiment, the housing | casing 3 is provided with the case 31 which has the opening 310 in the front surface and was covered with the partition 32 in the 4th aspect. Is preferred. The partition 32 includes a plate-like partition main body 321, a side wall 32h projecting rearward from the outer edge of the partition main body 321, and a support portion (side wall 32h, notch 32g, and mounting portion for supporting the first substrate 10). And a placement piece 32k).

  Therefore, in the above-described light control device A1, by attaching the partition 32 to the case 31, the first substrate 10 can be supported, and the power supply substrate unit 1 can be easily positioned.

  Moreover, in the light control apparatus A1 of the sixth aspect according to the embodiment, in the fifth aspect, the partition main body 321 preferably has a rib 32m at a position facing the power supply terminal block 11.

  Therefore, in the above-described light control device A1, even when a force is applied to the power supply terminal block 11 during the connection work and the removal work of the power supply lines W11 and W12, the deformation of the first substrate 10 can be suppressed by the ribs 32m.

  The above-described embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and various modifications can be made depending on the design and the like as long as the technical idea according to the present invention is not deviated from this embodiment. Of course it is possible to change.

A1 Light control device 1 power supply substrate unit 10 first substrate 11 power supply terminal block 15 signal terminal block 2 control substrate unit 20 second substrate 3 housing 31 case 310 opening 32 partition wall 32 g notch (support portion)
32h side wall (support part)
32k mounting piece (supporting part)
32m Rib 6 Mounting frame K1 Power supply circuit K2 Signal generation circuit W11, W12 Power supply line W21, W22 Signal line

Claims (6)

A power terminal block to which an AC voltage is input by connecting a power line;
A power supply circuit for converting the AC voltage into a DC voltage;
A signal terminal block to which signal lines are connected;
A signal generation circuit which receives the DC voltage as a drive power supply, generates a light adjustment signal for instructing a light adjustment level of a lighting fixture, and outputs the light adjustment signal from the signal terminal block via the signal line When,
The power supply terminal block, the power supply circuit, and a case for housing the signal terminal block.
The said housing | casing has the partition which separates the said power supply terminal block, the said power supply circuit, and the said signal terminal block and the said signal generation circuit. The light modulation apparatus characterized by the above-mentioned. The signal generation circuit is disposed in front of the partition;
The light control device according to claim 1, wherein the casing is provided with a hole on the rear surface for exposing the signal terminal block. The mounting frame directly or indirectly attached to the housing and fixed to the front surface of the construction material;
The light control device according to claim 2, wherein the housing is embedded in the opening of the building material. A power supply substrate unit having a first substrate on which the power supply terminal block, the power supply circuit, and the signal terminal block are mounted;
A control board unit having a second board on which the signal generation circuit is mounted,
The light control device according to any one of claims 1 to 3, wherein the housing accommodates the power supply substrate unit. The housing has an opening on the front surface, and the case is provided with the opening covered by the partition wall.
The said partition has a plate-shaped partition main body, the side wall which protrudes toward back from the outer edge of the said partition main body, and the support part which supports a said 1st board | substrate. Light control device. The light adjusting device according to claim 5, wherein the partition body has a rib at a position facing the power supply terminal block.

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