JP5551975B2 - Dimming control device - Google Patents

Description

  The present invention relates to a dimming control device for dimming and lighting a light source.

  2. Description of the Related Art Conventionally, a dimming control device is provided that is connected to a plurality of lighting fixtures and is disposed on a construction surface such as a wall surface so that a dimming switch that controls the dimming level of each lighting fixture is exposed ( For example, see Patent Document 1). The dimming control device described in Patent Document 1 includes a phase control circuit that adjusts a conduction angle (phase angle) of a bidirectional thyristor inserted in a power supply path from a commercial AC power supply to the lighting fixture. Dimming control is performed by controlling the amount of power supplied.

  In order to arrange this type of light control device on a construction surface such as a wall surface in the room, a mounting hole for embedding a case in which a light control circuit of the light control device or the like is housed is formed on the construction surface. In addition, the dimming control device covers the opening that opens to the front side of the case, attaches a flat cover that is larger than the mounting hole to the case, and attaches the rear side of the case to the construction surface Embed in the hole. Furthermore, by attaching the cover to the construction surface with screws or the like, the case of the light control device is fixed to the construction surface while being held by the cover and embedded in the attachment hole of the construction surface.

JP 2008-24396A

  By the way, in recent years, with the spread of air conditioning, general dwelling units are required to improve indoor airtightness in order to improve the efficiency of air conditioning. However, in the case where the mounting hole is formed in the construction surface in order to arrange the dimming control device on the construction surface as described above, air is circulated indoors and outdoors through the mounting hole, and airtightness is lost. There was a problem that efficiency decreased.

  This invention is made | formed in view of the said reason, The place made into the objective is providing the light modulation control apparatus which improves the airtightness of a room and improves the efficiency of air conditioning.

To achieve the above object, the light control device of the present application, a dimming circuitry substrate a dimming circuit for controlling the dimming level including at least circuitry are mounted luminaire, the light control circuitry substrate An instrument body that is housed inside and has a rear portion embedded in an opening provided on the construction surface and is attached to the construction surface in a state where the projecting portion is in contact with the peripheral edge of the opening, and an overhang portion of the instrument body and Bei example a Boki sheet interposed between the erecting surface, a protrusion insertion hole nail scissors fitting the locking projection is provided with a wide nail is inserted than other portions on the tip, this A locking hole for inserting the narrow part of the locking protrusion into the protrusion insertion hole is provided in the instrument body, and the air-proof sheet is inserted through the locking protrusion at a position corresponding to the protrusion insertion hole and the locking hole. has a bracket for cutting for each arc notch is provided at the boundary between the projection insertion hole and the locking hole The features.

  It is preferable that this air-proof sheet is provided with a screw notch for passing a fixing screw at a position facing an insertion hole of a fixing screw for attaching the tool main body provided on the tool main body to the construction surface.

  ADVANTAGE OF THE INVENTION According to this invention, the dimming control apparatus which raises indoor airtightness and improves the efficiency of air conditioning can be provided.

It is a disassembled perspective view which shows the light control apparatus concerning embodiment of this invention. It is the disassembled perspective view which looked at the tuning light control apparatus from the other side. It is a schematic block diagram which shows the lighting fixture connected to the tuning light control apparatus and the tuning light control apparatus. (A) is a schematic perspective view which shows the locking piece which comprises a tuning light control apparatus, (b) is a schematic sectional drawing for demonstrating the attachment position of the locking piece of a tuning light control apparatus. (A) shows the pinch metal fitting used when attaching a tuning light control apparatus to a construction surface, (b) is a schematic sectional drawing for demonstrating the attachment method of the light modulation control apparatus using the pinch metal fitting. It is a schematic sectional drawing for demonstrating the convection of the air at the time of attaching a tuning light control apparatus to a construction surface.

  Embodiments of the present invention will be described below with reference to the drawings.

  A dimming control device 1 according to the present embodiment will be described with reference to FIGS. In the following description, the up and down direction in FIG. 1 is the up and down direction of the dimming control device 1, the left and right direction in FIG. 6 is the front and rear direction of the dimming control device 1, and the direction perpendicular to the paper is the left and right direction. Specify and explain.

  The dimming control device 1 according to the present embodiment is connected to a plurality of lighting fixtures 2 installed in an indoor space such as a ceiling surface or a floor, and the dimming level of each lighting fixture 2 is set according to a user's operation. It is a device for individual operation. The dimming control device 1 includes five dimming circuits each including a phase control circuit and a duty control circuit (see FIG. 3).

  As the lighting fixture 2 connected to the dimming control device 1, for example, an incandescent lamp or the like is provided as a light source (not shown), and the conduction angle of the AC power supplied from the dimming control device 1 through the power line L1. There is a luminaire 2a that is dimmed by changing. Also, a luminaire including a light source such as a light emitting diode or a fluorescent lamp (not shown) and a duty control circuit (not shown) for adjusting the dimming level of the light source using power supplied from the commercial power source AC as operating power. 2b is connected. The duty control circuit of the luminaire 2b adjusts the power supplied to the light source according to the duty ratio of the dimming signal input from the dimming control device 1 connected via the signal line L2, thereby The light control level is adjusted. Since the configuration and operation of this duty control circuit are known techniques, detailed description thereof is omitted.

  Each of the dimming circuits of the dimming control device 1 is connected to one of the above-described lighting fixtures 2a or 2b for each dimming circuit, and phase control is performed according to the type of the lighting fixtures 2a and 2b to be connected. Dimming control is performed using either a circuit or a duty control circuit. Here, the dimming circuit of the dimming control device 1 will be described with reference to a schematic block diagram shown in FIG.

As shown in FIG. 3, the dimming control device 1 is connected to the commercial power supply AC via the power line L3 connected to the power supply terminal T1, and operates with AC power supplied from the commercial power supply AC as its operating power. Yes. The dimming control device 1 includes a triac Tra ... Tre connected in series via a power line L1 to a series circuit of the lighting fixture 2a and the commercial power supply AC, and a phase control terminal T2a ... T2e connected to the power supply line L1. Is provided. Further, the dimming control device 1 outputs the output from the drive circuit DR that drives each triac Tr, the zero-cross detection unit Z that detects the zero-cross of the AC power supply waveform, and the zero-cross detection unit Z that is input via the filter circuit F. A control unit CPU that controls the drive circuit DR is provided. The dimming control device 1 uses these circuits to adjust the dimming level of the lighting fixture 2a by controlling the phase of the lighting power supplied from the commercial power source AC to the lighting fixture 2a. The light control apparatus 1 is connected to a lighting fixture 2b that operates using power supplied from a commercial power supply AC as an operating power via a signal line L2, and includes signal line terminals T3a to T3e to which the signal line L2 is connected. . The dimming control device 1 includes a duty signal output unit DUa... DUe that outputs a dimming signal having a duty ratio corresponding to the dimming level to the lighting fixture 2b, and the lighting fixture 2b according to the duty ratio of the dimming signal. Performs dimming control.

  The dimming control device 1 includes a dimming operation unit (not shown) for adjusting the dimming level for each dimming circuit, and a setting operation unit for switching an operation mode provided for each dimming circuit. An operation unit ST including at least (not shown) is provided. The operation unit ST has a scene setting unit (not shown) that collectively changes the dimming levels of the plurality of lighting fixtures 2a and 2b according to the operation, and various operations are performed by the user.

  Here, in the control unit CPU, an operation mode is set for each dimming circuit. As the operation mode, a phase control mode for dimming the lighting fixture 2a by phase control, and a dimming signal is output for illumination. A duty control mode for dimming the instrument 2b is provided. As another operation mode, there is provided a lighting switching mode for switching lighting / extinguishing of the lighting fixture 2 in accordance with the operation of the dimming operation unit. The user operates the setting operation unit for each dimming circuit according to the type and purpose of the connected lighting fixture 2, and the operation mode when the dimming operation unit is operated becomes a desired operation mode. Set.

  Moreover, the light control apparatus 1 is provided with the display part DSP for displaying the light control level set to the present lighting fixture 2 for every light control circuit, respectively. The dimming control device 1 also includes a storage unit MEM that stores various types of information such as the current dimming level for each lighting fixture 2. The dimming control device 1 is connected to a communication unit CM that exchanges signals with an external device (not shown) such as another dimming control device and a communication line (not shown) of the external device. A communication terminal T4 is provided.

  In addition, as shown in FIG. 1, the dimming control device 1 includes an instrument body 100 that is embedded in a mounting hole (see FIG. 6) provided on a construction surface such as a wall surface. This instrument main body 100 includes a case 10, a mounting frame 20, and a cover 30 as its constituent elements. The dimming control device 1 includes a decorative plate 41 that is attached to the cover 30 in a state where the operation cover 31 provided on the surface of the cover 30 is exposed, and a decorative plate that can be opened and closed with the lower side of the decorative plate 41 as an axis. The decorative panel 40 which consists of the decorative door 42 attached to the front side of 41 is provided. Further, the dimming control device 1 includes a dimming circuit board 50 on which the circuit components 53 constituting the above-described dimming circuit are mounted, and an input circuit board 60 on which circuit parts constituting the operation unit ST are mounted. Is provided.

  The dimming circuit board 50 has a high-power terminal 51 including phase control terminals T2a... T2e for five circuits and a power supply terminal T1, and a low-power terminal 52 including a signal line terminal T3 for five circuits on the rear surface. Has been implemented. The high-power terminal 51 and the low-power terminal 52 are both arranged on the rear surface of the dimming circuit board 50 and in a substantially straight line with a predetermined interval on the lower side. The high-power terminals 51 and the low-power terminals 52 are connected by pushing the power lines L1 and L3 and the signal line L2 from the rear side, respectively.

  The case 10 has an opening 11 that opens to the front surface, and is formed in a substantially box shape from a synthetic resin. As shown in FIG. 1, the case 10 has a wiring storage area 12 for storing the dimming circuit board 50 so that the side on which the terminals 51 and 52 of the dimming circuit board 50 to be described later are mounted is the rear side. Is formed.

  Further, the power supply terminal hole 14 and the light power terminal hole 15 for exposing the high power terminal 51 and the light power terminal 52 to the rear side of the case 10 are provided on the wall surface on the rear side of the case 10. The case 10 has a space between the high power terminal 51 and the low power terminal 52 inside the case 10 as a wiring storage region 17 and stores various wirings (not shown) used in the light control device 1. On the side wall of the wiring storage area 17 on the high power terminal 51 side, a rib 17a is provided on the inner side of the case 10 so as to protrude further forward than other parts. Between the high-power terminal 51 and the low-power terminal 52 on the rear side of the case 10, a convex portion 16 protruding rearward from the high-power terminal 51 and the low-power terminal 52 is formed.

  In addition, a screw fixing projection 13 having a screw hole is formed on the upper and lower edges on the front side of the case 10, and the case 10 is in a state where the light control circuit board 50 is stored in the wiring storage region 12. The screw is inserted into the screw hole of the protrusion 13 from the rear side and is attached to the mounting frame 20.

A mounting groove 19 is formed on the outer wall on the rear side of the case 10 to which the separator 5 for separating and wiring the power supply line L1 and the power supply line L3 is attached. The attachment groove 19 is formed to be slightly narrower than the thickness of the separator 5, and the separator 5 is held between the inner walls of the attachment groove 19 by pushing the separator 5 from the rear side.

  Further, the lower wall surface of the case 10 has a slit 18 that is opened in a substantially rectangular shape having a long side in the left-right direction of the case 10 and into which a locking piece 80 (see FIG. 4A) is inserted. A plurality of cases 10 are provided along the left-right direction of the case 10. Each slit 18 is a position in contact with the front surface of the light control circuit board 50 in a state where the light control circuit board 50 is housed in the case 10 (see FIG. 4B), and each terminal hole. 14 and 15 are provided in the vicinity.

  As shown in FIG. 4A, the locking piece 80 is formed in a flat plate shape whose width in the front-rear direction is substantially equal to the width of the slit 18, and has a flange portion 84 wider than the other part on the lower side. Is formed. Further, the tip portion 81 located above the locking piece 80 and inserted into the slit 18 has a slanted portion formed narrower by approaching the front side as the rear side surface approaches the tip portion 81. 82. In addition, a protrusion 83 having a substantially triangular cross section for pressing the inner wall of the slit 18 to the outside when inserted into the slit 18 is provided on the other end side of the locking piece 80.

When the locking piece 80 is inserted into the slit 18 from the outside to the inside of the case 10 with the dimming circuit board 50 housed inside the case 10, the inclined portion 82 of the locking piece 80 is dimmed. It is inserted into the slit 18 while pushing away the circuit board 50 to the rear side. Moreover, when pushing the engaging piece 80 to the outer wall and the jaws 84 of the case 10 comes into contact, by the projection 83 presses the inner wall of the slit 18 outward, the front side of the light control circuit board 50 is the engaging piece 80 The locking piece 80 is held by the case 10 in a state of being in contact with the rear side.

  The attachment frame 20 is made of a rectangular metal plate having an opening at the center, and the case 10 is attached to the back side by screws or the like. Further, the mounting frame 20 is formed with mounters 21 (21a, 21b) that protrude from the left and right edge portions toward the central opening. An input circuit board 60 is disposed on the front side of the mounter 21, and a light control circuit board 50 and a heat radiating plate 70 described later are disposed on the rear side of the mounter 21. The heat radiating plate 70 is attached so as to be thermally coupled to the mounter 21 of the attachment frame 20.

  The input circuit board 60 is provided with a dimming switch 61 composed of an up switch 61a and a down switch 61b each composed of a tact switch, and a mode switch 62 composed of two dip switches arranged in the vertical direction for each lighting fixture 2. It has been. In addition, the input circuit board 60 is provided with LEDs 63 each composed of a plurality of light emitting diodes for each lighting fixture, and the dimming switch 61, the mode changeover switch 62, and the LED 63 are collectively set close to each corresponding lighting fixture. Has been. A plurality of scene selection switches 64 each including a tact switch for setting a dimming scene are provided on the surface of the input circuit board 60. Here, the dimming switch 61 corresponds to the dimming operation unit constituting the operation unit ST, the mode change switch 62 corresponds to the setting operation unit constituting the operation unit ST, and the LED 63 corresponds to the display unit DSP.

  The heat radiating plate 70 is formed by bending a flat metal having high thermal conductivity into a substantially L shape, and one side thereof is in the vicinity of the circuit component 53 mounted on the rear side of the dimming circuit board 50. The other side is located at the opening of the mounting frame 20 and is attached to the mounter 21. In addition, an insulating sheet 71 having a size substantially equal to that of the light control circuit board 50 is disposed between the heat sink 70 and the light control circuit board 50. That is, the heat radiating plate 70, the insulating sheet 71, and the dimming circuit board 50 are attached to each other on the rear surface of the mounter 21 with spacers or the like as appropriate, with a predetermined space therebetween.

  On the upper and lower sides of the mounting frame 20, an elliptical screw insertion hole 22 penetrating in the thickness direction and a clip metal fitting 3 (see FIG. 5A), which will be described later, are held in a substantially L shape. A pair of formed metal fitting holding holes 23 are provided in the vicinity of both ends in the left-right direction. The clamp fitting holding hole 23 has a narrow width portion 23a whose width in the left-right direction matches the width of a lock projection 3a of the clamp fitting 3 described later, and extends inward from one end side of the narrow portion 23a. A wide portion 23b having a width corresponding to the claw 3b of the protrusion 3a is provided.

  The cover 30 has a substantially box shape with an opening at the back, and is made of a synthetic resin molded product formed in a flat plate shape with the front-rear direction as the thickness direction. The cover 30 covers the opening 11 of the case 10 and covers the front surface of the mounting frame 20. Attached to the side. The cover 30 covers circuit components mounted on the surfaces of the circuit boards 50 and 60 such as an operation cover 31 for operating the dimming switch 61 and an operation hole 32 for operating the mode switch 62. A window hole is appropriately provided for exposure from the front side.

  The cover 30 has vent holes 33 a and 33 b formed of a plurality of slits penetrating in the front-rear direction. The vent hole 33 a is long at the edge of the cover 30, and the vent hole 33 b is long at the edge of the cover 30. A plurality are provided side by side in the direction. Each vent hole 33 is provided in a recessed portion that is recessed rearward relative to the other part of the cover 30. In addition, an inclined portion 36 that is inclined toward the front side toward the center of the cover 30 is provided in the concave portion provided with the vent holes 33a and 33b.

  Further, the cover 30 is provided with an attachment window frame 34 penetrating in the front-rear direction at a position facing the pinch metal holding hole 23 in a state where the cover 30 is attached to the attachment frame 20. The instrument body 100 is attached to and removed from the construction surface while the cover 30 is attached to the attachment frame 20 by passing the clamp 3 and the screw tightening tool through the space inside the attachment window frame 34. be able to.

When the dimming control device 1 is attached to the construction surface, the case 10 and the cover 30 are attached to the mounting frame 20 in a state in which the dimming circuit board 50 is housed in the case 10, and the rear side of the case 10 is placed on the construction surface. And is fixed using, for example, a clamp 3 shown in FIG. As shown in FIG. 5 (a), the clip metal fitting 3 is formed in a substantially L shape in which one side of a flat metal piece protrudes to the front side. A locking projection 3a protruding to the side is formed. At the tip of the locking projection 3a, there is provided a claw 3b that is formed wider in the inner direction than other portions. Moreover, the holding | maintenance part 3d bent so that it may protrude toward the front side as it approaches an end is provided in the both ends of the other side of the clip metal fitting 3.

  More specifically, in a state where the mounting frame 20, the case 10, and the cover 30 are combined, the nail of the clip metal fitting is inserted into the wide portion 23 b of the clip metal holding hole 23 from the rear side to the front side of the instrument main body 100. The locking projection 3a is inserted from the 3b side. Thereafter, when the locking projection 3a of the clip metal fitting 3 is slid toward the narrow part 23a of the clip metal holding hole 23, the claw 3b is locked with the narrow part 23a. In this state, a screw (not shown) is passed from the front side of the mounting window frame 34 of the case 30 and lightly screwed into the screw hole 3c. Next, a construction member constituting a construction surface is inserted between the rear surface of the mounting frame 20 and the front surface of the sandwiching metal 3, and the rear surface of the mounting frame 20 and the front side of the sandwiching metal 3 are tightened with screws. (See FIG. 5B). When the screw is tightened here, the pinch metal 3 is formed in an L shape, and the outer wall of the case 10 exists at the lower part thereof, so that the pinch metal 3 rises forward each time the screw is tightened. The stop protrusion 3 a moves to the narrow portion 23 b side of the pinch metal holding hole 23.

  As a method of attaching the case body 100 to the construction surface, it is possible to attach the attachment frame 20 to the embedded box. In that case, screws through the attachment window frame 34 and the screw insertion holes 22 are attached to the embedded box. Screw in a screw hole (not shown).

Further, on the back side of the mounting frame 20, an air-proof sheet 4 is disposed between the back side of the mounting frame 20 and the surface of the building surface when the instrument body 100 is attached to the building surface. The air-proof sheet 4 is a substantially transparent molded product formed by vacuum forming, for example, an olefin-based elastomer sheet, is formed in a rectangular frame shape having an opening at the center, and is slightly larger than the frame portion around the mounting frame 20. Is formed.

  Further, the air-proof sheet 4 is provided with a screw cut 4 a cut in a cross shape at a position corresponding to the screw insertion hole 22 of the mounting frame 20. When attaching the attachment frame 20 to the construction surface, a fixing screw is passed through the screw cut 4 a of the air-proof sheet 4.

  Further, the air-proof sheet 4 has a substantially rectangular shape in which a side close to the outside of the air-proof sheet 4 is left at a position facing the pinch metal holding hole 23 of the mounting frame 20 and the vertical direction of the air-proof sheet 4 is a long side. The notches 4b and 4c are provided. The metal notch 4b has a width substantially equal to the narrow part 23b of the pinch metal holding hole 23 and is set to a length substantially equal to the vertical length of the narrow part 23b. It is set to a length substantially equal to the length in the up-down direction of the wide portion 23 b of the clamp fitting holding hole 23.

  Here, when attaching the instrument main body 100 to the construction surface using the sandwiching metal 3, the air-proof sheet 4 is placed on the back side of the mounting frame 20, and the air-proof sheet 4 is secured by the claws 3 b of the sandwiching metal 3. While pushing the metal notches 4b and 4c, the locking protrusion 3a of the clip metal 3 is inserted. Next, when the instrument body 100 is screwed to the pinch metal fitting 3, the locking projection 3 a moves to the narrow portion 23 b side of the pinch metal holding hole 23, so that the metal notch 4 c cannot be pushed by the lock protrusion 3 a. . In addition, since the degree to which the front end portion of the metal notch 4b is gradually pushed away by the locking projection 3a is lowered, the air-proof sheet 4 can maintain airtightness.

  The decorative panel 41 and the decorative door 42 of the decorative panel 40 are made of, for example, a synthetic resin molded product formed in a substantially flat plate shape, and the cover 30 has an engaging projection (not shown) provided on the back side of the decorative panel 41. It is detachably attached to the cover 30 so as to cover the front side. Further, the decorative plate 41 and the decorative door 42 are formed by combining holding portions 44a provided at both ends of the decorative plate 41 on the lower side and held portions 44b provided at both ends of the decorative door 42 on the lower side. 42 holds the front side surface of the decorative plate 41 so as to be freely opened and closed.

  The decorative plate 41 includes an operation hole 43 for exposing the operation cover 31 to the front side. The decorative plate 41 penetrates the decorative plate 41 in the thickness direction, and various operation elements provided on the surface of the cover 30 are provided on the front side. A window frame for operation and display is provided as appropriate. In addition, the operation door 47 for exposing the operation cover 36 provided on the scene selection switch 64 to the front side penetrates the decorative door 42 in the thickness direction of the decorative door 42. The decorative panel 40 and the side wall on the lower side are provided with a ventilation portion 45 having a thickness in the front-rear direction thinner than that of other portions.

  Here, the flow of the surrounding air when the light control device 1 is attached to the construction surface will be described with reference to FIG. FIG. 6 is a cross-sectional view of the dimming control device 1 as viewed from one side in the left-right direction in a state where the dimming control device 1 is attached to the construction surface.

  As shown in the cross-sectional view of FIG. 6, the interior of the construction surface and the indoor space are separated by the construction surface and the dimming control device 1. Here, the size of each terminal hole 14, 15 of the case 10 is set slightly smaller than the size of each terminal 51, 52, and the edge side of the surface of each terminal 51, 52 is the edge of each terminal hole 14, 15. The inner surface side and the rear surface side of the case 10 are kept airtight. Moreover, since the air-proof sheet 4 is interposed between the dimming control device 1 and the construction surface at the portion where the light control device 1 and the construction surface abut (A in the figure), the inside of the construction surface The air does not convection with the indoor space, and the airtightness of the room is maintained.

  Further, inside the dimming control device 1, heat is generated by the operation of the internal circuit, and this heat is transmitted through the heat radiating plate 70 to warm the air near the opening 11 of the case 10 and around the mounting frame 20. The warmed air flows upward through the vent hole 33a provided in the cover 30 and is discharged from the upper side of the cover 30 to the indoor space. At this time, the upper wall surface of the cover 30 is covered with the decorative panel 40, but the air flow to the upper side is not hindered by the ventilation portion 45 provided at a position corresponding to the ventilation hole 33a. In addition, since the inclined portion 36 inclined to the front side is provided on the lower side of the vent hole 33a of the cover 30, air is more easily convected upward.

  In addition, air inside the case 10 convects to the upper side of the dimming control device 1, so that air around the ventilation portion 45 of the decorative panel 40 out of the air in the indoor space passes through the ventilation hole 33b and passes through the case 10. Drawn inside. That is, the dimming control device 1 forms a convection path R that passes through the vicinity of the heat radiating plate 70 and does not communicate with the space inside the building surface between the indoor space (see FIG. 6).

  As described above, in the dimming control device 1 according to the present embodiment, the high-power terminal 51 used for phase control and the low-power terminal 52 used for duty signal control are spread after a predetermined interval. It is arranged in a straight line in the direction. Thus, it is possible to separate the power line L1 which is a strong current wiring and the signal line L2 which is a weak current wiring, and to reduce wiring mistakes between the strong current wiring and the weak current wiring. Further, between the power supply terminal hole 14 and the low power terminal hole 15 exposing the terminals 51 and 52, there is a wiring storage area 12 for storing wirings used in the light control circuit board 50 and the input circuit board 60. Since it is provided, generation of useless space can be reduced.

  Further, at the rear of the case 10, a convex portion 16 protruding rearward from the terminals 51 and 52 is formed, and a mounting groove 19 for holding the separator 5 is provided on the back surface. Wiring can be done by attaching to. Thereby, the strong current wiring and the weak current wiring can be separated at the time of wiring and at the time of use, and the safety of the dimming control device 1 can be improved.

  Further, when the power supply line L1 and the signal line L2 are inserted into the dimming circuit board 50 and the input circuit board 60 from the rear side by the locking piece 80 attached to the lower side of the case 10, the front of each circuit board 50, 60 is provided. Movement to the side is suppressed. As a result, the circuit boards 50 and 60 can be accommodated inside the case 10 without imposing a load, and stress applied to the circuit boards 50 and 60 can be reduced even during wiring.

  Further, since the locking piece 80 has a substantially rectangular shape formed wide along the surface of each circuit board 50, 60, the contact area between the surface of each circuit board 50, 60 and the locking piece 80 is small. The stress applied to the circuit boards 50 and 60 during wiring is further reduced. Further, the protrusion 83 provided on the locking piece 80 presses the inner wall of the slit 18 of the case 10 so that the locking piece 80 can be attached to the case 10 in a removable state without using a screw or the like. .

  In addition, since the leading end portion 81 of the locking piece 80 is provided with an inclined portion 82 formed so as to move away from the surface of each circuit board 50, 60 as approaching the leading end portion 81, the locking piece 80 is inserted into the slit 18. When inserting, each circuit board 50 and 60 can be pushed back.

  Moreover, when attaching the instrument main body 100 to a construction surface, since the air-proof sheet | seat 4 interposed between the back surface of the attachment frame 20 and the surface of a construction surface is provided, the convection between a room | chamber interior and a construction surface is reduced. Thus, the airtightness of the room can be improved and the efficiency of air conditioning can be improved.

  Further, since this air-proof sheet 4 is provided with a screw cut 4a, it is not necessary to make a screw hole or the like when the light control device 1 is screwed to the construction surface, and light control is easily performed. The control device 1 can be screwed to the construction surface.

  The airtight sheet 4 is provided with metal notches 4b and 4c having different lengths, and a notch is provided between the metal notches 4b and the metal notches 4c. For this reason, when attaching the dimming control device 1 to the construction surface using the metal fitting 3, the metal fitting notch 4b is in a state where only the return metal fitting 4c is turned up, so that the airtightness can be improved. it can.

  The dimming control device 1 has a heat radiating plate 70 disposed from the vicinity of the circuit component 53 mounted on the dimming circuit board 50 to the back side of the cover 30, and the cover 30 has a vent hole 33 a penetrating in the front-rear direction. , 33b are provided. As a result, a convection path R through which indoor air convects from the lower side to the upper side of the heat radiating plate 70 is formed, and heat generated inside the instrument body 100 is radiated while maintaining high airtightness in the room. be able to.

  Further, the decorative panel 40 covering the front surface of the instrument main body 100 is provided with a ventilation portion 45, and a convection path R is formed at a position spaced from the construction surface by a predetermined distance. Heat can be radiated efficiently.

  In addition, the dimming control device 1 is provided with a plurality of operation modes set for each connected lighting fixture 2, and a mode changeover switch 62 for changing the operation mode and an operation according to the set operation mode. And a dimming switch 61 for performing the above. The dimming switch 61 and the mode changeover switch 62 are arranged at positions close to each lighting fixture, and the user can set the dimming control method without making a mistake in the setting target lighting fixture.

  Moreover, since the mode changeover switch 62 also serves as a switching means to the lighting switching mode for switching on / off of the lighting fixture 2, the user can change the lighting control method without making a mistake in the lighting fixture to be set. Can be set.

DESCRIPTION OF SYMBOLS 1 Dimming control apparatus 2a, 2b Lighting fixture 3 Clamp metal fitting 3a Locking protrusion 3b Claw 4 Air-proof sheet 4a Screw cut 4b, 4c Metal cut 10 Case 20 Mounting frame 23 Metal holding hole 23a Narrow part 23b Wide Part 30 Cover 100 Instrument body

Claims (2)

And dimming circuitry substrate a dimming circuit for controlling the dimming level including at least circuitry are mounted luminaire housing a pre Symbol dimming circuits board inside the rear in an opening provided in the erecting surface Embedded in the instrument body attached to the construction surface in a state where the projecting part is in contact with the peripheral edge of the opening, and an air-proof sheet interposed between the projecting part of the instrument body and the construction surface, Bei to give a,
A projection insertion hole into which the claw of the clip metal fitting provided with a locking projection having a claw wider than the other part at the tip is inserted, and a narrow portion of the locking projection is inserted continuously to the projection insertion hole. A locking hole is provided in the instrument body,
The air-proof sheet has metal fitting notches for inserting the locking projections at positions corresponding to the projection insertion holes and the locking holes, respectively, at the boundary between the projection insertion holes and the locking holes. dimming control and wherein that you cut is provided. The air-proof sheet is provided with a screw notch for passing the fixing screw at a position facing an insertion hole of the fixing screw for attaching the instrument body provided on the instrument body to the construction surface. dimming control apparatus according to claim 1, wherein.

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