JP4254524B2 - Automatic switch with hot wire sensor - Google Patents

Description

  The present invention relates to an automatic switch with a heat ray sensor that controls a lighting load and a ventilation fan by detecting heat rays emitted from a human body.

  2. Description of the Related Art Conventionally, an automatic switch with a hot-wire sensor for a toilet has been provided for turning on a lighting load and operating a ventilation fan in response to a person entering or leaving the toilet room. This type of automatic switch with a heat ray sensor includes a heat ray sensor that detects a heat ray emitted from a human body, and determines whether a person is present in the toilet room based on the output of the heat ray sensor.

  As this type of automatic switch A with a heat ray sensor, as shown in FIG. 10, many switches are arranged so that a part of the container 100 is exposed on the lower surface side of the ceiling surface. The reason why the automatic switch A with a heat ray sensor is mounted on the ceiling in this way is that the movement of the person is reduced when sitting on the toilet seat with respect to the movement of the person entering and leaving the toilet room 90, so the toilet room 90 This is because a person inside can be reliably detected by a heat ray sensor (not shown). In the automatic switch A with a heat ray sensor shown in FIG. 10, the light receiving lens 101 for adjusting the detection area of the heat ray sensor is exposed at the central portion on the lower surface side of the body 100, so the direction of the light receiving lens 101 is adjusted at the time of construction. By doing so, it is possible to allow the toilet bowl 92 to enter the high-sensitivity detection area E having relatively high sensitivity among the detection areas of the heat ray sensor and to allow the vicinity of the door 91 to enter the detection area of the heat ray sensor. is there. By adjusting the direction of the light receiving lens 101 in this way, it is possible to prevent the illumination load from being turned off accidentally during use of the toilet. When the installation location of the ceiling-mounted automatic switch A with a heat ray sensor is determined as described above, if the illumination load L is an incandescent lamp, a lighting fixture 93 having the illumination load L made of the incandescent lamp and It is desirable that the distance H1 between the center line M of the body 100 and the center line M is 30 cm or more and the distance H2 between the center line of the body 100 and the toilet bowl 92 is within 70 cm.

  The basic operation of the above-mentioned automatic switch A with a heat ray sensor is as shown in FIG. 11, and when the surroundings are dark as shown in FIG. 11A, human detection (time of day) by the heat ray sensor as shown in FIG. The lighting load L is turned on and off according to t11 when a person is detected, and when the surroundings are bright, the lighting load L is kept off regardless of the presence or absence of a person (t21 is a person detection time). Further, the ventilation fan F is turned on / off according to the presence or absence of a person regardless of the ambient illuminance as shown in FIG.

  In addition, after a person is detected, when the heat ray sensor detects a person during a preset operation holding time (for example, 10 seconds to 6 minutes) T1, the person is not detected (t12, t22 is a person). The illumination load L is extinguished at the time when the operation holding time T1 has elapsed (when t13 and t23 have passed the operation holding time T1). On the other hand, the ventilation fan F starts to operate from the time when the person is detected by the heat ray sensor (t11, t21), and further reaches a certain time (for example, 5 minutes) T2 from the time (t13, t23) when the operation holding time T1 ends. It stops at the point of time (t14, t24). Here, a fixed time T2 from the end of the operation holding time T1 to the stop of the ventilation fan F is fixedly set.

  By the way, since the above-mentioned automatic switch A with a heat ray sensor is attached to the ceiling, as shown in FIG. 12A, a wall-mounted switch B and a ventilation fan F for forcibly turning on and off the illumination load L are forced. It is considered that a wall-mounted switch C for turning off automatically is provided and wired separately from the automatic switch A with a heat ray sensor.

  Here, the automatic switch A with heat ray sensor, the switch B, and the switch C have internal circuits as shown in FIGS. 12B, 12C, and 12D, respectively. That is, the automatic switch A with a heat ray sensor includes a pair of power connection terminals X1 ′ and X1 ′ for connecting the commercial power supply AC and a pair of lighting load connection terminals X2 ′ and X2 ′ for connecting the lighting load L. And a pair of ventilation fan connection terminals X3 ′, X3 ′ for connecting the ventilation fan F, one power connection terminal X1 ′, one lighting load connection terminal X2 ′ and one ventilation fan connection terminal X3 ′ are connected in common The triac Q1 is inserted between the other power connection terminal X1 ′ and the other lighting load connection terminal X2 ′, and the relay is connected between the other power connection terminal X1 ′ and the other ventilation fan connection terminal X3 ′. Based on the output of the heat sensor and the output of the brightness sensor for detecting the ambient illuminance by the control circuit 110 inserted with the contact r and fed from the commercial power supply through the pair of power connection terminals X1 ′ and X1 ′. There By controlling the contact r of the triac Q1 and relay, to control the illumination load L and ventilators F.

  The switch B for forcibly turning on and off the lighting load L includes a continuous on mode for forcibly turning on the lighting load L, a continuous off mode for forcibly turning off the lighting load L, and an automatic mode. , A terminal X4 ′ for connecting the lighting load L, a terminal X5 ′ for connecting to the commercial power source AC, and the other lighting load connecting terminal of the automatic switch A with a heat ray sensor A terminal X6 ′ for connecting to X2 ′ and a terminal X7 ′ for forcibly turning off the illumination load L are provided, and an operation unit (not shown) provided on the front side of the body of the switch B If the continuous on mode is selected, the terminals X4 'and X5' are electrically connected and the lighting load L is turned on. If the continuous cutting mode is selected by the operation unit, the lighting load L is turned off and the automatic mode is selected. If you select Automatic with heat ray sensor Switch A is to control the illumination load L on the basis of the output of the brightness sensor and the output of the hot wire sensor as described above.

  The switch C for forcibly turning off the ventilation fan F is a switch capable of selecting a continuous cut mode for forcibly turning off the ventilation fan F and an automatic mode. A terminal X8 'for connecting to the other ventilation fan connection terminal X3', a terminal X9 'for connecting to the ventilation fan F, and a terminal X10' for forcibly turning off the ventilation fan F, If the continuous cut mode is selected by an operation unit (not shown) provided on the front side of the body of the switch C, the ventilation fan F is turned off, and if the automatic mode is selected, the automatic switch A with a heat ray sensor is as described above. The ventilation fan F is controlled based on the output of the heat ray sensor.

Although the automatic switch A with a heat ray sensor described above was a ceiling-mounted type, a wall-mounted type automatic switch with a heat ray sensor has also been proposed (see, for example, Patent Document 1). Here, in the automatic switch with a heat ray sensor disclosed in Patent Document 1, the detection area of the heat ray sensor is set by a light receiving lens disposed on the front side of the body that can be attached to a mounting frame for an embedded wiring fixture. By setting two, it is possible to detect a person with high sensitivity in a wide range in the toilet room.
JP-A-1-1895884 (Page 2, lower left column, lines 1 to 7, page 4, upper right column, line 16 to lower left column, line 4, page 5, lower right column, line 14 to page 6, upper left of page 6) (Column 6th line, see FIGS. 1 to 4, 9, and 10)

By the way, in what was disclosed by FIG. 10 or the said patent document 1, although the illumination load L and the ventilation fan F can be operated interlockingly, in an auto switch with a hot-wire sensor single, an illumination load and a ventilation fan are separately operated on / off. Convenience was not good because I could not. Also, has been disclosed in FIG. 10 and the above-mentioned Patent Document 1, the load (the illumination load L, ventilators F) must be connected with the commercial power supply 4-wire, connection work is troublesome. In addition, when the human body is detected by the heat ray sensor, the operation of the lighting load L and the operation of the ventilation fan F are started simultaneously, and the ventilation fan F is stopped after a certain time T2 has elapsed after the lighting load L is turned off. Only the interlocking operation was set, and the fixed time T2 could not be changed. In addition, when the lighting load L is turned on when the surroundings are dark, the lighting load L is rated-lit regardless of the time of day, so that people who enter the toilet room at night may feel dazzling. .

  The present invention has been made in view of the above-mentioned reasons, and its main purpose is that it can be attached to a wall surface and is easy to connect, and in addition to the interlocking operation of the illumination load and the ventilation fan, the illumination load and An object of the present invention is to provide an automatic switch with a heat ray sensor capable of individually turning on and off a ventilation fan.

The invention according to claim 1 is a first switch element inserted between the lighting load and the commercial power source, a second switch element inserted between the ventilation fan and the commercial power source, and a heat ray radiated from the human body. And a signal processing unit having a function of operating the illumination load and the ventilation fan in conjunction with each other by controlling the first switch element and the second switch element based on the output of the heat ray sensor. An automatic switch with a heat ray sensor, wherein the first switch element, the second switch element and the signal processing unit can be mounted on a mounting frame for an embedded wiring device, and the first switch only set the element and terminals each end of the second switching element are connected in common, two to a terminal first switching element and second switching element and the other ends of each of which is respectively connected, the device body And a power supply circuit unit that stabilizes the output of the rectifier and supplies power to the signal processing unit, and both ends of the first switch element are 2 rectifiers. one input terminal, which are connected together respectively, provided on the front side of the second operating unit of device body for turning on and off individually first operating portion and ventilators for turning on and off the lighting load separately, the signal processing unit Has a function of controlling the first switch element so that the illumination load is turned on and off according to the operation of the first operation unit, and a second switch so that the ventilation fan is turned on and off according to the operation of the second operation unit. And a function of controlling elements.

  According to this invention, since the container can be attached to the mounting frame for the embedded wiring apparatus, it can be attached to the wall surface, and each end of the first switch element and the second switch element is commonly connected. Since the terminal and two terminals to which the other ends of the first switch element and the second switch element are respectively connected are provided, the commercial power source, the lighting load and the ventilation fan are connected to the two-wire wiring. Wiring work is facilitated, and the lighting load and the exhaust fan are linked to each other by controlling the first switch element and the second switch element based on the output of the heat ray sensor. Since the signal processing unit has a function of turning on and off the lighting load according to the operation of the first operation unit and a function of turning on and off the ventilation fan according to the operation of the second operation unit, the lighting load and the ventilation fan The interlocking operation it is possible to off separately individually an illumination load and ventilators. Therefore, the lighting load and the ventilation fan can be individually turned on and off as necessary. For example, when cleaning the ventilation fan, the lighting load can be turned on while the ventilation fan can be stopped.

  The invention of claim 2 is the midnight mode time setting unit for setting the start time and time of the midnight mode time zone in which the illumination load is dimmable and the illumination load is dimmed to light. The operation unit is provided on the front side of the container, and the signal processing unit dimms the illumination load when the illumination load is lit in the midnight mode time zone.

  According to the present invention, if a midnight mode time zone is set, the lighting load is dimmed when a person is detected in the set time zone, so that the lighting load is rated and lit compared to the case. It becomes difficult for people to feel dazzling.

  According to a third aspect of the present invention, in the second aspect of the present invention, when the signal processing unit is operated to turn on the lighting load by the first operation unit in the midnight mode time zone, the lighting load is rated on. It is characterized by making it.

  According to the present invention, the lighting load can be lit at a rated level as needed, such as in an emergency, even in the midnight mode time zone.

  The invention of claim 4 is the invention of claim 2 or claim 3, further comprising a backup circuit unit for supplying power to the signal processing unit at the time of power failure of the commercial power supply. The start time and time of the midnight mode time zone are held while the user is in the middle of the night.

  According to this invention, it is not necessary to reset the midnight mode after a power failure of the commercial power source.

  According to a fifth aspect of the present invention, in the first to fourth aspects of the invention, when the human body is detected by the heat ray sensor, the operation of the illumination load and the operation of the ventilation fan are started simultaneously. And a ventilation fan interlocking switch for selecting a ventilation fan delay operation mode for delaying the operation start of the ventilation fan from the operation start of the lighting load on the front side of the body, and the signal processing unit is controlled by a ventilation fan interlocking switch. The second switch element is controlled based on the selected mode.

  According to the present invention, if the lighting / ventilation fan simultaneous operation mode is selected, the operation of the illumination load and the ventilation fan can be started simultaneously, while if the ventilation fan delay operation mode is selected, for example, It is possible to start the operation of the ventilation fan after the person leaves the toilet room without operating the ventilation fan while a person is in the toilet room in winter.

  According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, the operation of the illumination load and the operation of the ventilation fan are started at the same time, and then the illumination load is turned off until the ventilation fan is stopped. The delay time can be adjusted by the second operation unit.

  According to the present invention, since the delay time from when the lighting load is turned off to when the ventilation fan is stopped can be adjusted, the delay time can be set according to the size of the toilet room.

  According to a seventh aspect of the present invention, in the first to sixth aspects of the present invention, a brightness sensor for detecting ambient illuminance and a brightness sensor adjusting section capable of setting a reference illuminance are provided on the front side of the body. The signal processing unit is characterized in that when the illuminance detected by the brightness sensor exceeds the reference illuminance, the first switch element is kept off regardless of the output of the heat ray sensor.

  According to the present invention, it is possible to prevent the lighting load from being turned on when the ambient illuminance is bright and to save power.

  According to the first aspect of the present invention, it is possible to attach to the wall surface, and the connection work is easy, and the lighting load and the ventilation fan can be individually turned on / off separately from the interlocking operation of the lighting load and the ventilation fan. There is.

(Embodiment 1)
Hereinafter, the automatic switch with a heat ray sensor of this embodiment will be described with reference to FIGS. In addition, although the automatic switch with a heat ray sensor of this embodiment is attached to the wall surface of a toilet room and controls the illumination load and ventilation fan of a toilet room, it is also possible to use it in places other than a toilet room.

  The body 1 of the automatic switch with a heat ray sensor according to the present embodiment is formed by a synthetic resin body 10 having a front opening and a synthetic resin cover 20 having a rear opening coupled to the front side of the body 10. . That is, the assembly piece 21 extends rearward from the rear edge of both side walls (upper and lower side walls) in the longitudinal direction of the cover 20, and the assembly holes 21 a provided in the assembly piece 21 have both surfaces in the longitudinal direction of the body 10 ( The body 10 and the cover 20 are coupled by engaging with the assembly protrusions 11 formed on the upper and lower surfaces.

  The body 1 has dimensions corresponding to three of the unit-sized embedded wiring devices that can be attached to the mounting frame 4 for the embedded wiring device (embedded wiring device) in a row. Is formed. Therefore, only one container 1 can be attached to the attachment frame 4.

  The instrument mounting hole 4b provided in the part surrounding the rectangular window hole (not shown) of the mounting frame 4 on both side surfaces (both left and right side surfaces) in the short direction of the cover 20 forming the front part of the body 1 A pair of mounting claws 22c that can be engaged with each other protrudes from each other, and the body 1 is held by the mounting frame 4 when the mounting claws 22c engage with the instrument mounting holes 4b. Two cut grooves 22e in the front-rear direction with the rear end open are formed on one side wall in the short direction of the cover 20, and a portion between the cut grooves 22e is a flexible piece having flexibility in the thickness direction. 22f is formed. Therefore, the attachment claw 22 c can be elastically retracted from the side surface of the cover 20 by bending the bending piece 22 f toward the inside of the cover 20.

  When the above-mentioned container 1 is attached to the attachment frame 4, after the attachment claws 22 c provided on the side wall of the cover 20 opposite to the side wall on which the bending piece 22 f is formed are inserted into the device attachment holes 4 b of the attachment frame 4. If the body 1 is inserted into the window hole of the mounting frame 4 so that the mounting claw 22c provided on the side wall on which the bending piece 22f is formed is retracted from the side surface of the cover 20, the mounting claw 22c is inserted into the instrument mounting hole 4b. As a result, the body 1 is held by the mounting frame 4. Further, if the bending piece 22 f is pushed into the cover 20, the mounting claw 22 c can be removed from the instrument mounting hole 4 b and the device body 1 can be removed from the mounting frame 4. A push projection 22g is projected from the outer surface of the rear end portion of the flexure piece 22f in order to facilitate the pushing of the flexure piece 22f.

  The mounting frame 4 includes three sets of instrument mounting holes 4b as instrument mounting means in the longitudinal direction. Further, the attachment frame 4 is configured such that three types of attachment methods can be selected for a construction surface such as a wall surface. That is, the upper piece and the lower piece of the mounting frame 4 have a long hole 4c for inserting a box screw screwed into a mounting tongue piece provided on the opening side of an embedding box embedded in the wall, and a construction surface. A screw insertion hole 4d for inserting a screw for direct attachment used when directly attaching the mounting frame 4 in the case of a wooden wall, etc., and a scissor fitting used when the construction surface is a panel material such as a gypsum board A scissor fitting mounting hole 4e is formed for locking one end of each. Further, on the front side of the mounting frame 4, a plate (not shown) having an opening window that is longer and wider than the instrument mounting window hole in the mounting frame 4 is disposed so as to overlap. The upper piece and the lower piece are also formed with screw holes 4f for screwing plate screws for attaching a plate frame constituting the plate together with the decorative plate. In addition, a plate frame is attached to the front side of the attachment frame 4, and a decorative plate is attached to the front side of a plate frame.

  The body 10 and the cover 20 accommodate circuit boards 61 and 62 made of a printed circuit board on which some of the components of the circuit unit described later are mounted. Both circuit boards 61 and 62 are electrically connected to each other using a tape electric wire (not shown).

  In the lower part on the front side of the circuit board 62 accommodated in the cover 20, the light reception that sets the detection area of the heat ray sensor 2 (see FIG. 5) as a sensor element and the brightness sensor 3 (see FIG. 5) made of CdS. An optical system 64 is provided. Here, a semicircular opening window 22 for exposing the light receiving optical system 64 is formed on the front wall of the cover 20. In addition, the light receiving optical system 64 maintains a proper field of view of the heat ray sensor 2 when the automatic switch with the heat ray sensor of the present embodiment is attached to the wall surface in the toilet room with the light receiving lens and the mirror. In other words, while the automatic switch with the heat ray sensor is arranged on the wall surface in the toilet room, the minute movement of the person sitting on the toilet seat and the movement of the person entering and exiting the toilet room are detected by the heat ray received through the light receiving optical system 64. be able to. The light receiving lens is made of high-density polyethylene resin so that infrared rays can be easily transmitted.

  A decorative cover 30 made of a synthetic resin molded product covering the front side of the cover 20 is detachably attached to the container 1 described above. Here, the decorative cover 30 has a rectangular shape whose outer peripheral shape is a vertically long shape, and is formed in such a size as to be disposed in the opening window of the plate and cover the opening window of the plate with one piece. On the other hand, two upper and lower walls of the cover 20 are formed with two locking holes 23 into which locking pieces protruding from the rear surface of the decorative cover 30 are inserted and locked. In short, the decorative cover 30 is formed so as to engage with the cover 20 in an uneven manner.

  A window hole 32 is formed in a lower portion of the decorative cover 30 at a portion corresponding to the opening window 22 provided in the cover 20. Therefore, the light receiving optical system 64 is exposed to the front side of the decorative cover 30 through the window hole 32 with the decorative cover 30 attached to the cover 20. The window hole 32 has a semicircular opening shape, and is formed so that the opening area gradually increases toward the front side.

  A plurality of (four) terminals for connecting external wires are mounted on the circuit board 61 housed in the body 10. These terminals are so-called quick connection terminals, and are composed of a terminal plate 66 mounted on the circuit board 61 and a lock spring 67 for holding an external electric wire between the terminal plate 66. The lock spring 67 is formed by bending a metal plate having elasticity, and the external electric wire is sandwiched between the terminal plate 66 by the spring force, and the edge is bitten into the external electric wire. Secure the wires. The body 10 is provided with two release buttons 68 for pulling the locking spring 67 that prevents the external electric wire from coming off from the external electric wire. That is, each release button 68 is disposed across the two lock springs 67 so that the two lock springs 67 can be bent simultaneously by pressing the release button 68.

  The external electric wire is inserted into the container 1 through the electric wire insertion hole 13 formed in the rear wall of the body 10 and is sandwiched between the terminal plate 66 and the lock spring 67. Further, the release button 68 can be operated by inserting a tip of a driver into an operation hole 14 provided adjacent to the electric wire insertion hole 13.

  By the way, the automatic switch with a heat ray sensor according to the present embodiment is assumed to be used in a toilet room as described above, and can control the two loads of the illumination load and the ventilation fan in conjunction with each other and control them separately. It is configured to be able to. Hereinafter, the configuration of the circuit unit will be described with reference to FIGS. 5 and 6. 5 is a circuit block diagram, and FIG. 6 is a circuit diagram showing a specific configuration.

  The heat ray sensor 2 and the brightness sensor 3 are connected to a signal processing unit 51 formed of a microcomputer. The signal processing unit 51 gives an instruction to the illumination control unit 52 (see FIG. 6) and the ventilation fan control unit 53 (see FIG. 6) based on the outputs of the heat ray sensor 2 and the brightness sensor 3, and the illumination load composed of an incandescent lamp L and ventilation fan F are controlled. Here, the internal power supply is supplied by rectifying the commercial power supply AC by a rectifier DB formed of a diode bridge and stabilizing the output of the rectifier DB by the power supply circuit unit 54. Also, an operation holding time setting unit 55 for setting the operation holding time of the lighting load L (the time from when the person is no longer detected by the heat ray sensor 2 until the lighting load L is turned off) is connected to the signal processing unit 51. ing. Here, as the operation holding time setting unit 55, the signal processing unit 51 is connected with a holding time adjusting switch SW2 composed of a rotary switch capable of switching in 16 steps, and the operation holding holding time is set to 10 seconds, 30 Second, 1 minute, 1 minute 30 seconds, 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 10 minutes, 15 minutes, 20 minutes, 25 minutes, and 30 minutes can be adjusted.

  Moreover, the power supply connection terminal (common terminal) X1 for connecting commercial power supply AC, the illumination load connection terminal X2 for connecting the illumination load L, and the ventilation fan connection terminal X3 for connecting the ventilation fan F are provided one by one. A triac Q1 of the lighting control unit 52 is inserted between the power connection terminal X1 and the lighting load connection terminal X2, and a contact r of the relay Ry of the ventilation fan control unit 53 is inserted between the power connection terminal X1 and the ventilation fan connection terminal X3. Is inserted. Therefore, the lighting load L is turned on / off by turning on / off the triac Q1, and the ventilation fan F is turned on / off by turning on / off the contact r. Here, the triac Q1 and the relay Ry are controlled by the signal processing unit 51. The power supply connection terminal X1, the lighting load connection terminal X2, and the ventilation fan connection terminal X3 are each configured by the above-described quick connection terminal. The illumination control unit 52 controls the triac Q1 by controlling the photocoupler (phototriac coupler) PC including the light emitting element LE made of a light emitting diode and the light receiving element PD made of a phototriac by the signal processing unit 51. Thus, the lighting load L can be dimmed. The relay Ry is a latching relay and includes a set coil and a reset coil. In the present embodiment, the triac Q1 constitutes the first switch element, the contact r of the relay Ry constitutes the second switch element, and the signal processing unit 51 is based on the output of the heat ray sensor 2. By controlling the first switch element and the second switch element, the lighting load L and the ventilation fan F have a function of interlocking operation. In addition, a power connection terminal X1 is provided as a terminal to which one end of each of the first switch element and the second switch element is commonly connected, and each other end of each of the first switch element and the second switch element is connected to each other. In addition, the lighting load connection terminal X2 and the ventilation fan connection terminal X3 are provided as two terminals, and the commercial power supply AC, the lighting load L, and the ventilation fan F can be made into a two-wire wiring, and the wiring work is facilitated. .

  Furthermore, the circuit part of the example of illustration shows the automatic mode which turns on and off the illumination load L based on the output of the heat ray sensor 2, the off mode which forcibly turns off the illumination load L, and the illumination load L is forcibly lit. A mode changeover switch SW1 formed of a slide-type switch capable of selecting three modes, ie, an on mode for maintaining the state, is connected to the signal processing unit 51 as a manual switch unit 56.

  Further, when the automatic mode is selected by the mode selector switch SW1, the signal processing unit 51 sets the illumination load L regardless of the output of the heat ray sensor 2 when the detected illuminance by the brightness sensor 3 exceeds the reference illuminance. The signal processing unit 51 is connected to a brightness sensor adjustment unit 57 that sets a reference illuminance. Here, as the brightness sensor adjustment unit 57, a rotary variable resistor VR1 is connected to the signal processing unit 51, the reference illuminance can be set in a range of 5lx to 200lx, and the brightness sensor 3 The state in which the illumination load L is operated can be set irrespective of the detection of the ambient illuminance by.

  The signal processing unit 51 is connected to a midnight mode time setting unit 58 that sets a start time and a time of a midnight mode time zone in which the lighting load L is dimmed in response to detection of a person by the heat ray sensor 2. . Here, as the midnight mode time setting unit 58, the rotary variable resistor VR2 is connected to the signal processing unit 51, and the midnight mode time zone is set by operating the operation unit 48 of the variable resistor VR2. The time of the operation midnight mode time zone can be adjusted in multiple steps of 4 hours, 5 hours, 6 hours, 7 hours, and 8 hours from the state of not being turned off. In the signal processing unit 51, the time at which the time of the midnight mode time zone is set by the variable resistor VR2 is held as the start time of the midnight mode time zone, and until the time limit of the time of the midnight mode time zone ends from the start time Is in the midnight mode, and when a person enters the toilet room during the midnight mode time period, the lighting load L is dimmed, so that it is possible to prevent the user from awakening and feeling dazzling. . In an emergency or the like, the user can turn on the illumination load L at rated power by selecting the on mode with the operation unit 44 of the mode switch SW1.

  The signal processing unit 51 is also connected to a ventilation fan delay time setting unit 59 that sets a ventilation fan delay time, which is a delay time T2 until the ventilation fan F is stopped after the operation holding time ends. Here, as the ventilation fan delay time setting unit 59, a rotary variable resistor VR3 is connected to the signal processing unit 51, and the ventilation fan delay time is set in four steps of 5 minutes, 10 minutes, 15 minutes, and 30 minutes. It is possible to select a state where the ventilation fan is forcibly turned off and a state where the ventilation fan F is operated continuously. Therefore, it is possible to set the ventilation fan delay time according to the size of the toilet room with the variable resistor VR3, and if the state in which the ventilation fan F is forcibly turned off with the variable resistor VR3 is selected, it is possible to When cleaning the ventilation fan F in a toilet room without a window, the lighting load L can be turned on, the ventilation fan F can be stopped, and the state in which the ventilation fan F is continuously operated by the variable resistor VR3 can be selected. The ventilation fan F can be used as a ventilation facility at all times, and the convenience is enhanced. When cleaning the ventilation fan F in a toilet room without a window, it is desirable to turn on the illumination load L regardless of the ambient illuminance. In such a case, the variable resistor as the brightness sensor adjustment unit 57 The brightness sensor 3 may be disabled by using VR1, or the on mode may be selected by using the mode selector switch SW1.

  Further, the signal processing unit 51 starts the operation of the ventilation fan F so as to operate in conjunction with the lighting load L when a person entering the toilet room is detected by the heat ray sensor 2 (that is, the lighting load L The operation of the ventilation fan F simultaneously and the mode of starting the operation of the ventilation fan F after the person leaves the toilet room (that is, compared to the operation start time of the lighting load L). A slide-type ventilation fan interlocking changeover switch SW3 capable of selecting a ventilation fan delay operation mode for delaying the operation start time of the ventilation fan F is also connected. Since such a ventilation fan interlocking changeover switch SW3 is provided, for example, when the ventilation fan F is operating in winter or when it feels cold, if the ventilation fan delay operation mode is selected, the user is entering the room. The ventilation fan F can be operated after leaving the room without operating the ventilation fan F. In addition, if the user enters the lighting / ventilation fan simultaneous operation mode in summer or the like, the operation of the ventilation fan F starts simultaneously with the lighting load L when the user enters the room. be able to.

  As is apparent from the above description, in this embodiment, the mode switch SW1 as the manual switch unit 56, the holding time adjustment switch SW2 as the operation holding time adjustment unit 55, the ventilation fan interlocking changeover switch SW3, and the brightness sensor adjustment unit. FIG. 2 shows operation units 44, 45, 46, 47, 48, and 49 of variable resistor VR1 as 57, variable resistor VR2 as midnight mode time setting unit 58, and variable resistor VR3 as a ventilation fan delay time setting unit, respectively. As shown in FIG. 2, the front surface of the decorative cover 30 is exposed. That is, the cover 20 has six exposure holes 24 to 29 corresponding to the six operation parts 44 to 49, respectively, and the decorative cover 30 corresponds to the six operation parts 44 to 49, respectively. Six exposure holes 34 to 39 are formed. Here, as shown in FIG. 4, five window holes 85 to 89 that expose the five operation portions 45 to 49 are formed on the front surface of the decorative cover 30, and the operation is performed in the vicinity of each of the window holes 85 to 89. A nameplate 80 on which the usage of the parts 45 to 49 and the setting contents by the operation parts 45 to 49 are written is attached. In the present embodiment, the operation unit 44 constitutes the first operation unit, the operation unit 49 constitutes the second operation unit, and the signal processing unit 51 responds to the operation of the first operation unit. And the function of controlling the first switch element so that the lighting load L is turned on and off, and the function of controlling the second switch element so that the ventilation fan F is turned on and off according to the operation of the second operation unit. ing.

  By the way, since the operation frequency of the five operation units 45 to 49 out of the six operation units 44 to 49 described above is lower than that of the operation unit 44 of the mode changeover switch SW1, the decorative cover 30 has a relatively low operation frequency. One end of a door 40 that covers the operation units 45 to 49 so as to be freely opened and closed is pivotally attached so that the five low operation units 45 to 49 are not inadvertently operated. Usually, the door 40 on the front side of the decorative cover 30 is attached to the door 40. It closes and covers the operation parts 44-49. The door 40 has shaft portions 41 protruding from both upper and lower surfaces at one end, and the shaft portions 41 are formed on the opposing surfaces of a pair of upper and lower bearing bases 33 provided on the decorative cover 30 side. It is pivotally attached to the decorative cover 30 by being fitted into the groove 33a. In addition, the door 40 has an engagement protrusion (not shown) that is detachably inserted into an engagement hole 30 a formed in the right end portion of the front wall of the decorative cover 30 so as to protrude from the rear surface side of the other end portion. ing.

  In the present embodiment, the signal processing unit 51 includes a power failure detection circuit unit 60 that detects a power failure of the commercial power supply AC and a capacitor C1 having a relatively large capacity (for example, 1F). A backup circuit unit 70 that feeds power to the signal processing unit 51 and an oscillation circuit 71 that gives a clock cycle to the signal processing unit 51 in the event of a power failure of the commercial power supply AC are also connected. Here, as the capacitor C1, a capacitor having a capacity capable of continuing power supply to the signal processing unit 51 for a time longer than the time of the midnight mode time zone is used. Therefore, the signal processing unit 51 is supplied with power from the backup circuit unit 70 and supplied with a clock cycle from the oscillation circuit 71 when a power failure is detected by the power failure detection circuit unit 60. Time can be maintained, resetting after a power failure is unnecessary, and convenience is enhanced.

  Next, the operation will be described. The basic operation in this embodiment is as shown in FIG. 7. In FIG. 7, the reference illuminance is set by the variable resistor VR1 as the brightness sensor adjustment unit 57, and the automatic mode is selected by the mode selector switch SW1. Furthermore, the case where the illumination / ventilation fan simultaneous operation mode is selected by the ventilation fan interlocking changeover switch SW3 is shown. In this case, when the midnight mode time zone is not set, the ambient illuminance is dark as shown in FIG. 7A (the ambient illuminance detected by the brightness sensor 3 is set by the variable resistor VR1. The illumination load L is turned on / off in response to human detection by the heat ray sensor 2 as shown in FIG. 7B, and the ambient illuminance is bright (detected by the brightness sensor 3). When the ambient illuminance is higher than the reference illuminance set by the variable resistor VR1, the illumination load L is kept off regardless of the presence or absence of a person. Further, the ventilation fan F is turned on / off according to the presence or absence of a person regardless of the ambient illuminance as shown in FIG. Here, when the lighting load L is turned on, a soft start is performed, and the light output of the lighting load L increases as time elapses, and a rated lighting state is obtained after a certain time (for example, 2.5 seconds). In addition, when the midnight mode time zone is set (that is, in the midnight mode time zone), when the lighting load L is turned on, a soft start is performed, and the light output of the lighting load L increases with time. Then, after a certain time (for example, 2.5 seconds), the dimming lighting state (for example, the light output becomes 20% when the rated lighting is 100%).

  Here, since the triac Q1 is used as the first switch element inserted between the power supply connection terminal X1 to which the illumination load L is connected and the illumination load connection terminal X2, when the illumination load L is turned on. Realizes soft start by controlling the phase of the triac Q1, and suppresses inrush current by performing soft start.

  After the person is detected, when the operation holding time T1 set by the holding time adjustment switch SW1 comes to an end, the light output of the illumination load L is lowered a predetermined time (for example, 6 seconds before) (midnight mode time) When the band is not set, the light output is reduced to 50%, and when the midnight mode time zone is set, the light output is reduced to 10%. . As a result, it is possible to know that the light has been turned off. When the heat ray sensor 2 detects the movement of the person during the operation holding time T1, the operation holding time T1 is extended (a timer for timing the operation holding time T1 is restarted in the signal processing unit 51), and finally the person detects it. Since the illumination load L is extinguished after the operation holding time T1 has elapsed since it has been stopped, it is possible to prevent the illumination load L from being extinguished during use of the toilet room by appropriately designing the light receiving optical system 64. it can. In addition, when a person is detected by the hot wire sensor 2 during the advance dimming, the state changes to the rated lighting state again.

  On the other hand, the ventilation fan F starts to operate when a person is detected, and stops when the above-described delay time T2 has elapsed since the end of the operation holding time T1.

  Incidentally, FIG. 7 is an operation explanatory diagram when the lighting / ventilation fan simultaneous operation mode is selected by the ventilation fan interlocking changeover switch SW3 (that is, when the operation start of the illumination load L and the operation start of the ventilation fan F are interlocked). However, the operation when the delayed operation mode is selected by the ventilation fan interlocking changeover switch SW3 is as shown in FIG. That is, the operation of the illumination load L is the same as that in FIG. 7B as shown in FIG. 8B, and the operation timing of the ventilation fan F is different. The ventilation fan F starts its operation from the time when the operation holding time T1 ends, and stops when the above-mentioned delay time T2 elapses.

  In the automatic switch with a heat ray sensor described above, the mode changeover switch SW1 as the manual switch unit 56 and the operation holding time adjustment unit 55 are provided on the front side of the body 1 that can be attached to the mounting frame 4 for the embedded wiring apparatus. Holding time adjustment switch SW2, ventilation fan interlocking changeover switch SW3, variable resistor VR1 as brightness sensor adjustment unit 57, variable resistor VR2 as midnight mode time setting unit 58, variable resistor VR3 as a ventilation fan delay time setting unit The operation units 44, 45, 46, 47, 48, and 49 are provided, so that various operation settings can be easily performed according to the usage, installation location, maintenance, etc. of each user.

  In the above-described embodiment, the description has been given of the one provided with the variable resistor VR2 as the midnight mode time setting unit 58. However, when the midnight mode time setting unit 58 is not provided, as shown in FIG. The nameplate 80 may be attached to the front surface of the decorative cover 30.

It is a general | schematic disassembled perspective view which shows embodiment. It is a schematic perspective view of the state which removed the door in the same as the above. It is explanatory drawing of the construction method same as the above. It is a principal part front view same as the above. It is a circuit block diagram same as the above. It is a specific circuit diagram same as the above. It is operation | movement explanatory drawing same as the above. It is operation | movement explanatory drawing same as the above. It is a principal part front view in the other structural example same as the above. It is explanatory drawing of a prior art example. It is operation | movement explanatory drawing same as the above. An example of the wiring example is shown, (a) is an explanatory diagram of wiring, (b) is a schematic internal circuit diagram, (c) is a schematic internal circuit diagram of a switch for turning on and off the lighting load, and (d) is a ventilation fan. It is a schematic internal circuit diagram of the switch for turning on and off.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 10 Body 20 Cover 30 Cosmetic cover 40 Door 44-49 Operation part 61 Circuit board 64 Light reception optical system 66 Terminal board 67 Locking spring 68 Release button SW1 Mode change switch SW2 Holding time adjustment switch SW3 Ventilation fan interlocking change switch VR1 Variable Resistor VR2 Variable resistor VR3 Variable resistor

Claims (7)

A first switch element inserted between the lighting load and the commercial power source, a second switch element inserted between the ventilation fan and the commercial power source, and a heat ray sensor for detecting a heat ray radiated from the human body, An automatic switch with a heat ray sensor comprising a signal processing unit having a function of operating a lighting load and a ventilation fan in conjunction with each other by controlling the first switch element and the second switch element based on the output of the heat ray sensor. The body in which the first switch element, the second switch element, and the signal processing unit are accommodated can be attached to the mounting frame for the embedded wiring apparatus, and the first switch element and the second switch element a terminal one ends are commonly connected, the first switching element and the second set and two terminals each of the other ends of the respective switch element is connected only to the vessel body, out of the commercial power supply And a power supply circuit unit that stabilizes the output of the rectifier and supplies power to the signal processing unit, and both ends of the first switch element are connected to two input ends of the rectifier, respectively. is made by, provided on the front side for turning on and off the lighting load individually first operation unit and second operation unit device body to turn on and off the ventilation fan individually, the signal processing unit, the first operation A function of controlling the first switch element so that the illumination load is turned on and off according to the operation of the part, and a function of controlling the second switch element so that the ventilation fan is turned on and off according to the operation of the second operation part. An automatic switch with a heat ray sensor, characterized by comprising:   The lighting load is dimmable, and an operation portion of a midnight mode time setting unit for setting a start time and a time of a midnight mode time zone for dimming the lighting load is provided on the front side of the body, 2. The automatic switch with a heat ray sensor according to claim 1, wherein the signal processing unit performs dimming lighting of the lighting load when the lighting load is turned on in a midnight mode time zone.   The said signal processing part makes the said illumination load light at rated lighting if there exists operation which turns on the said illumination load by the said 1st operation part in the said midnight mode time slot | zone. Automatic switch.   A backup circuit unit that supplies power to the signal processing unit during a power failure of the commercial power source, and the signal processing unit holds the start time and time of the midnight mode time zone even during a power failure of the commercial power source. The automatic switch with a heat ray sensor according to claim 2 or 3, wherein   A lighting / ventilation fan simultaneous operation mode for simultaneously starting the operation of the illumination load and the operation of the ventilation fan when a human body is detected by the heat ray sensor, and a ventilation fan for delaying the operation start of the ventilation fan from the start of the operation of the illumination load A ventilation fan interlocking changeover switch for selecting a delayed operation mode is provided on the front side of the body, and the signal processing unit controls the second switch element based on the mode selected by the ventilation fan interlocking changeover switch. The automatic switch with a heat ray sensor according to any one of claims 1 to 4.   A delay time from when the illumination load is turned off to when the ventilation fan is stopped after the operation of the illumination load and the operation of the ventilation fan are simultaneously started can be adjusted by the second operation unit. An automatic switch with a heat ray sensor according to any one of claims 1 to 5.   A brightness sensor for detecting ambient illuminance and an operation unit for a brightness sensor adjustment unit capable of setting a reference illuminance are provided on the front side of the device, and the signal processing unit has a illuminance detected by the brightness sensor exceeding the reference illuminance. The automatic switch with a heat ray sensor according to any one of claims 1 to 6, wherein the first switch element is kept off regardless of the output of the heat ray sensor.

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