JPH07210774A - Thermosensitive automatic switch and load control system using the same - Google Patents

Abstract

PURPOSE:To provide the thermosensitive automatic switch which eliminates the need to form a fitting hole for fitting the thermosensitive automatic switch in a construction surface and the load control system which detects heat rays at plural positions by using the automatic switch. CONSTITUTION:A case 3 consists of a body 4, having a flange 6 whose outward shape is discoid at the lower end part, and a cover. A screw insertion hole 6b is formed in the flange 6 and a bolt which is inserted into the fitting frame of lighting apparatus is inserted into the screw insertion hole 6b and clamped and fixed with a nut. The thermosensitive switch as master equipment and slave equipment are connected through a two-wire type signal line. Heat rays emitted by a human body are detected by heat ray sensors provided to the master equipment and slave equipment to turn ON and OFF a load L such as a lighting load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat-sensitive automatic switch for automatically turning on / off a load by sensing a heat ray emitted from a human body, and a load control system using the same.

[0002]

2. Description of the Related Art Conventionally, as a heat-sensitive automatic switch of this kind, a heat ray radiated from a human body is detected by a heat ray sensor such as a pyroelectric element to detect the presence or absence of a person, so that the person can enter or leave the room. , Which automatically turn on and off controlled equipment such as lighting fixtures and ventilation fans by detecting leaving the room. Further, such a heat-sensitive automatic switch is generally mounted in a mounting hole provided on a construction surface such as a ceiling in which a case in which a heat ray sensor is housed is installed.

[0003]

However, in the above-mentioned configuration, when the controlled device is a lighting fixture which is embedded in the ceiling, a thermosensitive type is provided separately from the mounting hole for mounting the lighting fixture. Since it is necessary to provide a mounting hole for mounting the automatic switch, there is a problem that an extra space is required and the construction is troublesome.

Further, since the heat-sensitive automatic switch is not directly attached to a construction surface such as a ceiling but is attached to an embedded box provided in an attachment hole, there is a problem that it takes a lot of time and effort to attach the switch. By the way, when the controlled device is a luminaire, when a person enters or stays in the room even if the illuminance in the room in which the luminaire is installed is sufficient to illuminate Moreover, there is also a problem that the heat-sensitive automatic switch detects the person and turns on the lighting device, and wastes electric power.

Further, in front of the heat ray sensor, a light receiving lens is attached to a case for the purpose of focusing heat rays from the detection area on the heat ray sensor. For this light receiving lens, a Fresnel lens is generally used. It is formed in a hemispherical shape so that heat rays from a wide range in front of the construction surface can be focused on the heat ray sensor, and is attached to the case so as to project to the front of the case. As described above, it is generally designed to receive heat rays from a wide range, but it is necessary to limit the incidence direction of heat rays in order to reduce the possibility of malfunction due to the incidence of unnecessary heat rays. In some cases, a light-shielding sticker coated with an adhesive is attached to a desired position of the light-receiving lens in such a case. However, it is difficult to accurately position and attach the light-shielding sticker to the light-receiving lens, and there is a problem that the work of setting a desired detection area on site requires skill and is time-consuming.

Further, conventionally, in order to detect heat rays at a plurality of points, a sensor unit having a heat ray sensor housed in a case fixed to the ceiling, and a switch such as a relay that operates when a person is detected by the heat ray sensor. A heat-sensitive automatic switch consisting of a controller having elements is used.
That is, the controller is configured so that a plurality of sensor units can be connected via a signal line, and by inserting a switch element provided in the controller into a power supply path to a controlled device such as a lighting load, When the heat ray is detected by any of the plurality of sensor units, the lighting load can be turned on and off. However, in the above configuration, in order to detect the heat rays at a plurality of points for the purpose of widening the detection area, it is necessary to use a controller separately from the sensor unit, and the number of devices increases and the wiring work becomes troublesome. There is a problem.

The invention of claim 1 is intended to solve the above-mentioned first problem, and it is not necessary to provide a mounting hole for mounting the heat-sensitive automatic switch on the construction surface, and an extra space is required. The present invention intends to provide a heat-sensitive automatic switch that does not require and is easy to construct. The invention of claim 2 is intended to solve the above-mentioned second problem, and the heat-sensitive automatic switch can be directly mounted on a construction surface such as a ceiling, and the mounting work is easy. It is intended to provide a switch.

A third aspect of the present invention is intended to solve the third problem in addition to the above-described first or second problem, and saves power so as not to waste power. The present invention is intended to provide a heat-sensitive automatic switch which is designed to be made more compact. The invention of claim 4 is intended to solve the fourth problem in addition to the above-mentioned first to third problems, and the work of limiting the detection area does not require skill. An object of the present invention is to provide a heat-sensitive automatic switch that can be easily performed and that can accurately set the limit range of the detection area.

A fifth aspect of the present invention is intended to solve the above-mentioned fifth problem, and enables the hot wire to be detected at a plurality of points while performing the wiring work and the connection work. It is intended to provide an easy load control system.

[0010]

In order to achieve the above object, the invention of claim 1 is a heat ray sensor for detecting heat rays emitted from a human body, and a light receiving means for collecting heat rays from a detection area on the heat ray sensor. A lens and a control unit that outputs a control signal according to the presence or absence of a person when the heat ray is detected by the heat ray sensor,
The switch element, which is inserted into the power supply path to the controlled device and whose on / off state is set by the control signal, and the power supply line to the controlled device are connected, connect the power supply line and the power supply path. It is characterized in that a terminal portion including a quick-connect terminal is housed in a case, and a fixing means for housing and fixing the case inside the controlled device is provided.

According to a second aspect of the present invention, a heat ray sensor for detecting a heat ray emitted from a human body, a light receiving lens for condensing the heat ray from the detection area on the heat ray sensor, and a heat ray sensor for detecting the heat ray of the human A control unit that outputs a control signal according to the presence or absence, and a switch element that is inserted into a power supply path to the controlled device and whose on / off state is set by the control signal,
By connecting the power supply line to the controlled device to the power supply line and the above-mentioned power supply path, the terminal portion consisting of quick-connect terminals is housed in the case, and the case is attached to the mounting hole provided on the ceiling. It is characterized in that a mounting means is provided.

The invention according to claim 3 is claim 1 or claim 2.
In the invention, the controlled device is a lighting device, and an illuminance sensor for detecting illuminance of the surroundings is housed in the case,
The control unit is provided with a switching unit that outputs the control signal and switches the predetermined value only when the ambient illuminance detected by the illuminance sensor is equal to or less than a predetermined value.

The invention of claim 4 is the invention of claims 1 to 3.
In the invention, the area restriction is detachably attached to a fixed position of the case so as to cover the front surface of the light receiving lens, and an opening window is formed to limit the incident area of heat rays to the light receiving lens to a partial area of the light receiving lens. It has a special attachment. According to a fifth aspect of the present invention, the heat-sensitive automatic switch according to any one of the first to fourth aspects, a heat ray sensor for a child unit that detects a heat ray emitted from a human body, and a heat ray from a detection area is condensed on the heat ray sensor for a child unit. By the load control system having one or a plurality of slave units which house the light receiving lens in another case, the slave unit input circuit for connecting the one or a plurality of slave units via the signal line and the signal line One or a plurality of signal line connection terminal portions, which are fast-connecting terminals to be connected, are housed in the case of the heat-sensitive automatic switch, and when a heat ray is detected by at least one of the heat ray sensor and the child device heat ray sensor, By outputting a control signal according to the presence or absence of the thermal sensitive automatic switch from the control unit of the thermal sensitive automatic switch, the thermal sensitive automatic switch and one or a plurality of slave units perform on / off control of the controlled device as a load. And

[0014]

According to the invention of claim 1, the heat ray sensor for detecting the heat ray radiated from the human body, the light receiving lens for condensing the heat ray from the detection region on the heat ray sensor, and the heat ray sensor for detecting the heat ray. There are a control unit that outputs a control signal according to the presence or absence of a person, a switch element that is inserted into a power supply path to the controlled device and is turned on / off by the control signal, and a power supply line to the controlled device. By being connected to the power supply line and the power supply path, the terminal portion composed of a quick-connect terminal is connected to the inside of the case, and since the case has a fixing means for storing and fixing the case inside the controlled device, Since it is not necessary to provide a mounting hole for mounting the heat-sensitive automatic switch on the ceiling or wall, the construction is easy, and since the terminal portion is a quick-connect terminal, the wiring work is also easy.

According to the second aspect of the invention, the heat ray sensor for detecting the heat ray radiated from the human body, the light receiving lens for condensing the heat ray from the detection area on the heat ray sensor, and the heat ray sensor for detecting the heat ray. There are a control unit that outputs a control signal according to the presence or absence of a person, a switch element that is inserted into a power supply path to the controlled device and is turned on / off by the control signal, and a power supply line to the controlled device. By connecting the power supply line and the power supply path to each other by connecting them, the terminal portion composed of a quick-connect terminal is housed in a case, and a mounting means for mounting the case is provided in a mounting hole provided on the ceiling. The automatic switch can be easily mounted in the mounting hole in the ceiling, and the mounting work can be simplified. Moreover, since the terminal portion is the quick-connect terminal, the wiring work is also easy.

In the configuration of the invention of claim 3, the controlled device is a lighting device, the illuminance sensor for detecting the illuminance of the surroundings is housed in the case, and the control unit controls the ambient illuminance detected by the illuminance sensor. Since the switching means is provided for outputting the control signal and switching the predetermined value only when the illuminance of the surroundings is not higher than the predetermined value, the lighting device can be operated depending on the presence or absence of a person. By turning on and off, it is possible to avoid lighting the lighting fixture when unnecessary and save labor, and further, the predetermined value can be set to an arbitrary value by the switching means.

In the structure of the invention of claim 4, the front surface of the light receiving lens is detachably attached to a fixed position of the case and the incident area of the heat ray to the light receiving lens is limited to a partial area of the light receiving lens. Since the area restriction attachment with the opening window is provided, the shape of the opening window can be set accurately when the area restriction attachment is created.
In the field, a desired detection area can be accurately set by a simple operation of attaching the area attachment to a fixed position of the case.

According to a fifth aspect of the present invention, the heat-sensitive automatic switch according to any one of the first to fourth aspects, the heat ray sensor for a child device for detecting a heat ray radiated from a human body, and the heat ray from the detection area for a heat ray for a child device. 1 to a plurality of sub-units, each of which has a light-receiving lens that collects light on a sensor and is housed in another case,
To one or a plurality of child device input circuits for connecting a plurality of child devices via signal lines, and a signal line connecting terminal portion including a quick connect terminal to which the signal lines are connected, in the case of the thermal automatic switch. However, when a heat ray is detected by at least one of the heat ray sensor and the child heat ray sensor, a control signal according to the presence or absence of a person is output from the control section of the heat sensitive automatic switch, so that the heat sensitive automatic switch and Since a controlled device, which is a load, is controlled to be turned on and off by a plurality of slave units, a load control system capable of detecting heat rays at a plurality of locations by combining a heat-sensitive automatic switch and one or a plurality of slave units. This can be realized, and since it is not necessary to separately provide a relay unit or the like as in the conventional case, the number of wirings can be reduced and the wiring work can be facilitated.

[0019]

【Example】

(Embodiment 1) In this embodiment, as shown in FIGS. 8 and 9, a controlled device is used as a lighting fixture, and a heat-sensitive automatic switch housed and fixed inside the lighting fixture by a fixing means is illustrated.

As shown in FIG. 1, the case 3 has a body 4 having a flange 6 having a disk-like outer shape at its lower end.
And a cover 5 attached to the upper surface of the body 4. At the upper edge of the body 4, a plurality (4) of assembly pieces 4a are provided so as to project rightward in the figure, as shown in FIG.
The body 4 and the cover 5 are coupled by engaging the assembly claw 5a provided on the lower peripheral surface of the cover 5 with the engagement hole 4b opening in the assembly piece 4a. Printed circuit boards 7a and 7b mounted with components of a circuit section described later are housed in the body 4 and the cover 5, respectively.
Inside, a circuit board 10 in which a heat ray sensor 1 formed of a pyroelectric element and an illuminance sensor 33 formed of a CdS element described later are mounted in close proximity is housed, and heat rays from a detection area are detected by the heat ray sensor 1 and the illuminance sensor. A spherical movable body 8 (see FIG. 2) having a light-receiving lens 9 for condensing light on 33 is housed. The sensor elements constituting the heat ray sensor 1 and the illuminance sensor 33 are not limited to those in the embodiment, and other sensor elements having the same function may be used.

As shown in FIG. 2, the movable body 8 has a horn 11 having an outer peripheral shape of a hemispherical shape and a lower surface to which a light receiving lens 9 composed of a hemispherical Fresnel lens is attached, and an upper surface of the horn 11. The outer peripheral shape is formed into a spherical outer peripheral shape by the lid 12 having a hemispherical shape.
In the internal space surrounded by and, the heat ray sensor 1 and the illuminance sensor 3
Circuit board 1 so that 3 and 3 face the light receiving lens 9
It is configured to store 0. A shaft portion 13 is projectingly provided on both side surfaces of the horn 11, and the shaft portion 13 is vertically movable in a vertical groove (not shown) provided on the inner peripheral surface of the body 4 and the shaft portion 13 is provided. It is inserted so as to be rotatable around, and the direction of the movable body 8 can be changed. A circular window hole 4c penetrating the inside and outside of the body 4 is formed on the lower surface of the body 4, and substantially the entire light receiving lens 9 attached to the lower surface of the movable body 8 is exposed through the window hole 4c. The size of the window hole 4c is set.

Inside the body 4, there is fixed a pressing member 14 made of a strip-shaped sheet metal and bent in a shape such that the central portion in the longitudinal direction projects upward. As shown in FIG. 3, the retainer 14 has fixing holes 14a formed at both ends in the longitudinal direction, and screws 15 that are screwed into the body 4 through the fixing holes 14a.
It is fixed to the body 4 by. A support body 16 is attached to the lower surface side of the central portion of the retainer 14. Support 16
Is the two hook holes 14 formed in the center of the retainer 14.
Two leg pieces 16a inserted into b and one shaft piece 16 inserted into a through hole 14c formed in the center of the retainer 14.
b, a claw portion 16c is formed at the upper end portion of the leg piece 16a and is locked to the peripheral portion of the hook hole 14b to prevent the support body 16 from coming off downward. Presser 14 and support 16
A pressing spring 17 made of a coil spring is interposed between the supporting member 16 and the supporting member 16 by the pressing spring 17.
Is urged downwards. Here, the lower end of the pressing spring 17 is held in a groove formed between the leg pieces 16a and the shaft piece 16b, and the upper end abuts the pressing tool 14. Further, on the lower surface of the support body 16, an O-ring 1 as a slip stopper made of an elastic body having a large friction coefficient such as rubber.
8 is fixed.

As described above, the leg piece 16a of the support 16 is inserted into the retainer 14, and the claw portion 16c is provided at the tip end of the leg piece 16a. Even if a force is applied, the support body 16 can be held by the pressing tool 14 as shown in FIG.
It is possible to prevent 6 from coming off from the pressing tool 14. That is, the assembling work is simplified.

Inside the body 4, as shown in FIG. 4A, the support 16 is arranged so as to abut on the upper surface of the movable body 8, and the movable body 8 surrounds the window hole 4c. It is sandwiched between the portion and the support body 16 and held by the spring force of the pressing spring 17. Therefore, when an impact force acts on the movable body 8 due to the fall of the case 3 or the like, the pressing spring 17 is compressed and the periphery of the base of the shaft piece 16b of the support 16 is pressed as shown in FIG. 4B. 14
Since the pressing spring 17 is a coil spring and has a large amount of bending, the effect of alleviating the impact force becomes large. When the external force such as the impact force is released, the movable body 8 returns to the original position by the spring force of the pressing spring 17. Further, an annular position regulating rib 19 formed coaxially with the light receiving lens 9 attached to the lower surface of the horn 11 is provided on the upper surface of the lid body 12 of the movable body 8, and the position regulating rib 19 is provided. The support 16 can contact the movable body 8 only within a range surrounded by. That is, when the movable body 8 is rotated with respect to the body 4,
As shown in FIG. 4C, the rotation range of the movable body 8 is restricted by the contact of the position control rib 19 with the support body 16. In this rotation range, the light receiving lens 9 on the lower surface of the horn 11 moves. The window portion 4c is not covered with the peripheral portion. In addition, as described above, the lower surface of the support 16 has an O
Since the ring 18 is fixed and the O-ring 18 contacts the movable body 8, the movable body 8 may not move even if a small rotational force acts on the movable body 8 due to the frictional force between the movable body 8 and the O-ring 18. I am doing it.

By the way, the printed boards 7a and 7b are arranged in the case 3 so as to be vertically stacked, and are connected to each other through a connecting portion 7c formed of a flat cable or a flexible board. On the upper surface of the upper printed circuit board 7b, a quick-connect terminal 21 is provided for connecting a load and a power source.
Three pairs of the terminal portions 20 are mounted (see FIG. 5). As is well known, the quick-connect terminal 21 has a lock spring 21a provided in a terminal frame 21b and locks an electric wire inserted from an electric wire insertion port 22 (see FIG. 1 (d)) provided on the upper surface of the cover 5. The lock spring 21a is made of a leaf spring and is configured to bite into the wire to prevent the wire from coming off when the wire is connected. Further, a release button 23 is provided to release the connection state of the electric wire by the lock spring 21a.
Part 3 is exposed from the upper surface of the cover 5 so that it can be operated with a tool such as a driver. In addition, the wire insertion port 22 is
It is covered by the terminal cover 24 fitted on the cover 5. On the other hand, the lead wire 25 from the heat ray sensor 1 and the illuminance sensor 33 drawn from the movable body 8 is connected to the lower printed circuit board 7a.

By the way, a circuit as shown in FIG. 6 is mounted on the printed boards 7a and 7b. The feeder line connection terminal T ₁ of the terminal portion 20 is connected to the first power supply circuit 26, and in the first power supply circuit 26, the commercial power source AC input through the feeder line connection terminal T ₁ has a stabilized DC voltage ( 24V) and output. The output voltage of the first power supply circuit 26 is supplied to the relay drive circuit 27. Further, a lighting fixture, which is a load L, is connected to the load connection terminal T _2, which is connected to the power supply line connection terminal T ₁ via a relay contact r that is a switch element.

Further, a second power supply circuit 28 is connected to the next stage of the relay drive circuit 27, and in the second power supply circuit 28, the output voltage of the first power supply circuit 26 is stabilized at a DC voltage lower than that. Converted to voltage (5V) and output. The output voltage of the second power supply circuit 28 is the heat ray sensor 1, the illuminance sensor 3
3 and a timer circuit described later are supplied with power. An amplifier circuit 29 is connected to the heat ray sensor 1, and the amplifier circuit 29 amplifies the detection output of the heat ray sensor 1 to an appropriate level.
The amplified detection output is compared with a reference value in the comparator 30 in order to prevent erroneous detection in the heat ray sensor 1. Further, the timer circuit 31 is triggered by the detection output of the heat ray sensor 1 after being compared in the comparator 30, starts the time-delayed operation for a fixed time from that point, and through the pulse generation circuit 32 during the time-delayed operation. Relay drive circuit 2
7 is operated to turn on the contact r of the relay. An illuminance sensor 33 is connected to the timer circuit 31. The illuminance sensor 33 is a circuit board 1 housed in the movable body 8.
0 is mounted near the heat ray sensor 1 and detects ambient illuminance. When the ambient illuminance is equal to or higher than the predetermined value, the timer circuit 31 does not accept the trigger by the detection output of the heat ray sensor 1. That is, when the surroundings are bright to some extent, no illumination is required, so even if the heat ray sensor 1 detects a human body, the illumination is not turned on to save energy.

Further, the timer circuit 31 can be retriggered, and when it is retriggered by the detection output of the heat ray sensor 1 during the timed operation, it newly performs the timed operation for a fixed time.
Therefore, when a new detection output is obtained from the heat ray sensor 1 within the time limit operation, the contact r of the relay can be continuously kept on. When the heat ray is no longer detected by the heat ray sensor 1 and the time delay operation of the timer circuit 31 ends, the contact r of the relay is turned off. The time for the timed operation in the timer circuit 31 can be adjusted by a variable resistor (not shown) provided as a time setting unit. An operating knob 34 for operating the variable resistor is provided on the lower surface of the flange 6. Further, the ambient illuminance at which the timer circuit 31 does not accept the trigger due to the detection output of the heat ray sensor 1 can be adjusted by the switching means which also includes a variable resistor (not shown), and this variable resistor is operated. The operation switch piece 35 for this purpose is also provided on the lower surface of the flange 6.

A region limiting attachment 36 is detachably attached to the front surface of the light receiving lens 9. As shown in FIG. 7, the area limiting attachment 36 is made of a synthetic resin material that can block heat rays in a hemispherical shape along the front surface of the light receiving lens 9, and has a circular opening window 37 at the lower end.
Is formed in a shape having. Further, hooking claws 38 are provided at two positions on the upper edge of the area limiting attachment 36, and the hooking claws 38 are engaged with hooking recesses 6a formed in the flange 6 at positions corresponding to the peripheral portion of the light receiving lens 9. It is supposed to meet. That is, the area limiting attachment 3 is formed by the engagement of the hooking claw 38 and the hooking recess 6a.
The case 6 can be detachably attached to the case 3. When the area limiting attachment 36 is coupled to the case 3, the opening window 37 is circular with the vertical center line of the light receiving lens 9 as the center, and the heat ray is the opening window 37.
Since the light is incident on the light receiving lens 9 only through, the detection area can be limited to a relatively narrow spot-like area. Further, since the mounting position of the area limiting attachment 36 to the case 3 is defined as a fixed position by the positional relationship between the hooking claw 38 and the hooking recess 6a, the detection area can be easily and accurately irrespective of the skill of the operator. Can be set to.

The heat-sensitive automatic switch constructed as described above is housed and fixed in the lighting equipment which is the controlled equipment as follows. For example, the luminaire 39 shown in FIG. 8 is a ceiling-embedded luminaire in which an incandescent lamp 40 is used as a light source and is embedded in a mounting hole provided in the ceiling, and the inner bottom surface of a bottomed tubular instrument body 41. A box 42 for accommodating a lighting device and the like is attached to the bottom of the box 42 and the incandescent lamp 4 is attached.
There is provided a socket 43 for detachably mounting 0. At the lower end of the instrument body 41, two substantially circular openings 44a,
A lid portion 44 provided with 44b is attached, and a cylindrical reflector 45 having a lower surface opened at one opening 44a of the lid portion 44 surrounds the incandescent lamp 40 attached to the socket 43. It is attached. Therefore, the light of the incandescent lamp 40 is reflected by the reflection plate 45 and radiated downward through the opening 44a. Then, the heat-sensitive automatic switch is housed and fixed inside the instrument body 41 so that the light receiving lens 9 arranged on the lower surface of the case 3 is exposed from the other opening 44b. That is, the case 3 of the heat-sensitive automatic switch is placed inside the substantially cylindrical mounting frame 46 with the lower surface opened.
The upper surface of the flange 6 is brought into contact with the outer flange portion 46a provided at the lower end of the mounting frame 46 from below, and a bolt is inserted through the screw hole 6b provided in the outer flange portion 46a and the flange 6 and tightened with a nut. As a result, the case 3 is attached to the mounting frame 46.
It is fixed to. That is, the flange 6 and the mounting frame 46 form a fixing means.

Alternatively, in the case of a ceiling-mounted luminaire 48 using a ring-shaped fluorescent lamp 47 as shown in FIG. 9, a substantially cylindrical shape is formed in the center of the lower surface of the luminaire main body 49 which is attached by facing the ceiling. Mounting plate 50 is screwed, and the upper surface of the flange 6 of the heat-sensitive automatic switch is brought into contact with the inner flange portion 50a formed at the lower end of the mounting plate 50 from below, and screws provided on the inner flange portion 50a and the flange 6 are similarly attached. The case 3 can be fixed to the mounting plate 50 by inserting a bolt into the insertion hole and tightening it with a nut.

Here, threads 49a ... Are formed on the inner surface of the peripheral wall of the instrument body 49, and screw threads 51a. The glove 51 formed in the above is screwed to the lower surface of the instrument main body 49 by screwing the screw threads 49a ... And the screw thread portions 51a. A window 51b is provided at the approximate center of the globe 51.
Is provided. A peripheral portion of the window portion 51b is bent downward, and a retaining ring 52 formed in an annular shape having a substantially U-shaped cross section is fitted to the peripheral portion. Then, the case 3 is held by bringing the upper end surface of the holding ring 52 into contact with the lower surface of the flange 6,
The light receiving lens 9 of the heat-sensitive automatic switch is exposed from the inner opening of the holding ring 52.

According to the above construction, it is not necessary to separately provide a mounting hole for mounting the heat-sensitive automatic switch in addition to the mounting hole of the lighting fixture, and the construction is facilitated. (Embodiment 2) This embodiment exemplifies a heat-sensitive automatic switch that can be mounted in a mounting hole provided in a ceiling by a mounting means. The basic configuration of this embodiment is almost the same as that of the first embodiment, and the common portions are denoted by the same reference numerals and the description thereof will be omitted.

The external shape of the heat-sensitive automatic switch of this embodiment is substantially the same as that of the first embodiment as shown in FIG. That is, the case 3 has a substantially disk-shaped flange 6, and two mounting holes 53, 53 for directly attaching to an embedded box or a ceiling material are formed at both ends of the flange 6, and Mounting portions 54 are provided on the upper surfaces of both side portions to which mounting brackets 55 for sandwiching the ceiling material with the flanges 6 are detachably mounted. Further, the lower surface of the flange 6 is covered with a decorative plate 56 (see FIG. 11) except for the central portion. A terminal cover 24 (see FIG. 12) is detachably attached to the upper surface of the case 3 so as to protect the terminal portion 20.

As for the mounting bracket 55, the upper portion of the case 3 is inserted into the mounting hole formed in the ceiling material, and the flange 6 is provided on the lower surface of the ceiling material.
The case 3 is fixed to the ceiling material with the upper surface of the case 3 abutting, and a vertically long metal fitting body 57 having one side surface opened,
The bottom of the metal fitting body 57 is penetrated from below and the tip is attached to the metal fitting body 5.
7, a screw body 58 rotatably held on the ceiling portion, and a metal holding body 5 in which the screw portion of the screw body 58 is screwed into a screw hole.
It is composed of 9 and 9.

In order to mount the case 3 on the ceiling by using the mounting bracket 55, first, the head of the screw body 58 is attached to the round holes of the countersunk holes 60, 60 formed in the flange 6 from the upper surface side of the flange 6. It is fitted and exposed on the lower surface side of the flange 6. At this time, at the same time, the fixing pieces 62, 62 provided on both sides of the lower surface of the metal fitting body 57 are fitted into the fixing grooves 61 provided on the upper surface of the flange 6 in parallel with both sides of the daruma hole 60.
In this state, when the fixing piece 62 is slid in the fixing groove 61 and the metal fitting body 57 is moved toward the center of the flange 6, the head of the screw body 58 exposed to the outside from the lower surface of the metal fitting body 57 is dulled. Guided by the elongated hole portion of the hole 60, the peripheral portion of the daruma hole 60 is sandwiched between the lower surface of the metal fitting body 57 and the head portion of the screw body 58.

Next, the holding body 59 is inserted into the notch 57a formed in one side wall of the metal fitting body 57 in the anti-tightening direction of the screw body 58.
The upper part of the case 3 into which is inserted is inserted into a mounting hole formed in the ceiling material. At this time, since the holding body 59 projects in the direction along the side surfaces of the body 4 and the cover 5 with respect to the metal fitting body 57, the holding body 59 can be inserted without being caught in the mounting hole. After that, when the screw body 58 is rotated in the tightening direction with a screwdriver or the like in a state where the upper surface of the flange 6 is in contact with the lower surface of the ceiling material, the gripping body 59 comes out of the notch 57a by the rotation of the screw body 58, and the metal fitting body is The side edge will hit the other side wall of 57. At this time, the tip of the holding body 59 is located outside the projection range of the mounting hole and above the ceiling material. Therefore, the holding body 59 moves in a direction approaching the flange 6 as the screw body 58 is tightened, and when the tip end portion of the holding body 59 hits the upper surface of the ceiling material, the ceiling material is sandwiched between the holding body 59 and the flange 6. It is sandwiched and the case 3 can be fixed to the ceiling material.

The decorative plate 56 has a peripheral wall 56a surrounding the peripheral edge of the flange 6, and a locking groove for engaging with a locking claw 6c protruding from the peripheral edge of the flange 6 is formed on the inner peripheral surface of the peripheral wall 56a. By utilizing the elasticity of the decorative plate 56, the locking claw 6c can be detachably engaged with the locking groove. A round hole 56a corresponding to the window hole 4c of the body 4 is formed in the center of the decorative plate 56,
The light receiving lens 9 is exposed through the round hole 56a.

(Embodiment 3) In this embodiment, the heat-sensitive automatic switch of the embodiment 1 or 2 is used as a master device A, and this master device A and the above-mentioned master device A are separately provided with a heat ray sensor 1 '. When one or a plurality of child devices B ₁ ... Having substantially the same external shape and at least one of the heat ray sensor 1 of the parent device A and the heat ray sensor 1 ′ of the child device B ₁ ... A control signal according to the presence / absence is output from the control unit of the master device A to output the master device A.
And on-off control of the controlled device, which is a load, by _one and a plurality of child devices B ₁ ..., and detecting a heat ray at a plurality of locations together with the parent device A and one or a plurality of child devices B ₁ . An example of a load control system that enables the above is illustrated.

The master unit A has been described in the second embodiment, and its circuit block diagram is shown in FIG. On the printed circuit board 7b, a pair of power supply line connection terminals T ₁ connected to a power supply line Lp from the commercial power supply AC, and a signal line L to the slave unit B ₁ ...
A pair of signal line connection terminals T ₃ connected to s and a pair of load connection terminals T ₂ connected to the load line Lx from the load L are provided (see FIG. 16). Therefore, a total of six electric wire connecting portions are provided, and one of the power supply line connecting terminals T ₁ and one of the load connecting terminals T ₂ are electrically connected. Note that FIG.
Since the circuit shown in FIG. 3 has the same basic configuration as that described in the first embodiment, the common portions are denoted by the same reference numerals and the description thereof will be omitted.

This embodiment is different from that of the first embodiment in that
That is, the child device input circuit 63 is connected to the signal line connection terminal T ₃ connected to the signal line Ls to the child device B ₁ . The slave unit input circuit 63 is provided to connect the heat ray sensor 1 ′ and a slave unit B ₁ ... To be described later that includes a signal output circuit 64 for sending the detection output of the heat ray sensor 1 ′ onto the signal line Ls. In the slave units B ₁ and B ₂ , the DC voltage converted from the output voltage of the first power supply circuit 26 to the stabilized DC voltage (12V) lower than that by the third power supply circuit 65 is input to the slave units. Power is supplied through the circuit 63, and the slave unit B ₁ can notify the parent unit A of the detection of the heat ray by changing the line voltage of the signal line Ls when the heat ray sensor 1 ′ detects the heat ray. . That is, the signal output circuits 64 of the slave units B ₁ and B ₂ change the line voltage of the signal line Ls when a heat ray is detected. In this way, child devices B ₁ , B
The line voltage of the signal line Ls changes in two steps according to the presence or absence of detection of a heat ray in ₂ , and the binary signal due to this voltage change is transmitted to the master unit A. Further, the signal line connection terminals T ₃ ′ of the slave units B ₁ and B ₂ are provided with feed wiring terminals T ₄ ′ in parallel, so that a plurality of slave units B ₁ can be fed and wired. (See FIGS. 14 and 15).

In the slave input circuit 63, the signal line connection terminal T
The line voltage of the signal line Ls connected to ₃ is compared with the reference voltage, and the presence or absence of detection of heat rays in the slave units B ₁ and B ₂ is determined based on the magnitude relationship with the reference voltage. This judgment result is used as a comparator 3.
By inputting 0, the timer circuit 31 can be triggered as in the first embodiment. by the way,
In order to depolarize the connection polarity with respect to the signal line Ls, the slave unit input circuit 63 is provided with a depolarizing means. That is, in order to perform depolarization from the slave unit input circuit 63,
The alternating voltage of the bipolar electrodes is applied to the signal line Ls, and the slave unit B ₁ ,
A power supply slave unit B _1, B ₂ and rectified in B _2. It is also possible to make the slave units B ₁ and B ₂ non-polarized, and a DC voltage is supplied from the slave unit input circuit 63 to the signal line Ls.
It is sufficient to apply the signal to the signal line Ls via the diode bridge in the slave units B ₁ and B ₂ .

The parent device A and the child devices B ₁ and B ₂ are
The wires are connected as shown in FIG. That is, basically, the heat-sensitive automatic switch, which is the master device A, and the slave device B ₁ are
It is connected via a wire-type signal line Ls, and a slave unit B ₁
And the child device B ₂ are also connected via a two-wire type signal line Ls, and the heat ray sensor 1, 1 ′ provided on the parent device A and the child devices B ₁ , B ₂ detects the heat ray generated from the human body. Thus, the load L such as the lighting load is turned on / off. The heat-sensitive automatic switch is connected to the power line Lp of the commercial power source AC to supply power, and the load L is the load line Lx.
Is connected to a contact r of a relay built in the heat-sensitive automatic switch.

Next, the external shape of the child device B ₁ ... Will be briefly described. The child device B _1, ... Has a shape substantially similar to that of the second embodiment, as shown in FIG. That is, the case 3 has a substantially disk-shaped flange 6, and two mounting holes 53, 53 for directly attaching to an embedded box or a ceiling material are formed at both ends of the flange 6, and Mounting brackets 55 for sandwiching the ceiling material between the upper surface of both sides and the flange 6.
Is detachably attached. Further, the lower surface of the flange 6 is covered with the decorative plate 56 except for the central portion. A hemispherical light receiving lens 9 which is a Fresnel lens is exposed at the center of the decorative plate 56, and the heat ray from the detection area is focused on the heat ray sensor 1 through the light receiving lens 9. Further, the terminal cover 24 is detachably attached to the upper surface of the case 3,
The terminal portion 20 is protected. The case 3 is mounted on the ceiling by using the mounting bracket 55 as in the case of the heat-sensitive automatic switch of the second embodiment, that is, the parent device A.

[0045]

According to the invention of claim 1, a heat ray sensor for detecting a heat ray emitted from a human body, a light receiving lens for condensing the heat ray from the detection region on the heat ray sensor, and a heat ray detected by the heat ray sensor. There are a control unit that outputs a control signal according to the presence or absence of a person, a switch element that is inserted into a power supply path to the controlled device and is turned on / off by the control signal, and a power supply line to the controlled device. By being connected to the power supply line and the power supply path, the terminal portion composed of a quick-connect terminal is connected to the inside of the case, and since the case has a fixing means for storing and fixing the case inside the controlled device, Since it is not necessary to provide a mounting hole for mounting the heat-sensitive automatic switch on the ceiling or wall, the construction is easy. Further, since the terminal portion is a fast-connecting terminal, there is an effect that the wiring work becomes easy.

According to a second aspect of the present invention, a heat ray sensor for detecting a heat ray emitted from a human body, a light receiving lens for condensing the heat ray from the detection area on the heat ray sensor, and a heat ray sensor for detecting a heat ray of a person A control unit that outputs a control signal according to the presence or absence, and a switch element that is inserted into a power supply path to the controlled device and whose on / off state is set by the control signal,
By connecting the power supply line to the controlled device to the power supply line and the above-mentioned power supply path, the terminal portion consisting of quick-connect terminals is housed in the case, and the case is attached to the mounting hole provided on the ceiling. Since the mounting means is provided, there is an effect that the heat-sensitive automatic switch can be easily mounted in the mounting hole of the ceiling and the mounting work can be simplified. Also,
Since the terminal portion is a quick-connect terminal, there is an effect that the wiring work becomes easy.

According to a third aspect of the present invention, the controlled device is a lighting fixture, and an illuminance sensor for detecting the illuminance of the surroundings is housed in the case, and the control unit sets the ambient illuminance detected by the illuminance sensor to a predetermined value. Since the switching means is provided for outputting the control signal and switching the predetermined value only when the illuminance of the surroundings is lower than the predetermined value, the lighting device is turned on according to the presence or absence of a person. By turning it off, there is an effect that the lighting fixture can be prevented from being turned on when it is not needed, and labor can be saved. Further, since the predetermined value can be set to an arbitrary value by the switching means, there is an effect that it is possible to cope with various installation environments, and the invention according to claim 4 covers the front surface of the light receiving lens. Since it is equipped with an area limiting attachment that is detachably attached to a fixed position of the case and has an opening window that limits the incident area of the heat ray to the light receiving lens to a partial area of the light receiving lens, the shape of the opening window Can be set accurately when creating the area restriction attachment, so the desired detection area can be set accurately in the field by a simple task of attaching the area attachment to a fixed position on the case. There is an effect.

The invention of claim 5 is the first to fourth aspects of the invention.
A thermosensitive automatic switch as described, a heat ray sensor for a child device for detecting heat rays emitted from a human body, and a light receiving lens for collecting heat rays from a detection area on the heat ray sensor for child devices are housed in different cases. To the plurality of slave units, the slave unit input circuit connecting the one to the plurality of slave units via the signal line, and the signal line connection terminal portion including the quick connect terminal to which the signal line is connected. One to more than one is stored in the case of the automatic type automatic switch, and when at least one of the heat ray sensor and the slave unit heat ray sensor detects a heat ray, a control signal corresponding to the presence or absence of a person is output from the control unit of the heat sensitive automatic switch. By doing so, the on / off control of the controlled device, which is the load, is performed by the heat-sensitive automatic switch and the one or more slave units. Can be detected Can be achieved Do not load control system,
Moreover, since it is not necessary to separately provide a relay unit or the like as in the conventional case, there is an effect that the number of wirings is reduced and the wiring work is facilitated.

[Brief description of drawings]

1A and 1B show a first embodiment, (a) is a front view, (b) is a bottom view, (c) is a side view, and (d) is a top view.

FIG. 2 is a partially cutaway front view of the above movable body.

FIG. 3 is a partially cutaway plan view of a pressing tool used in the above.

4A to 4C are operation explanatory views of the movable body of the above.

FIG. 5 is a plan view showing a state where the body and the cover of the same are expanded.

FIG. 6 is a circuit block diagram of the above.

FIG. 7 is a plan view of an attachment for area limitation used in the above.

FIG. 8 is a cross-sectional view showing a state in which the same is housed in a lighting fixture.

FIG. 9 is a partially cutaway plan view showing a state in which the same is housed in another lighting fixture.

10A and 10B show a second embodiment, (a) is a front view, (b) is a bottom view, (c) is a side view, and (d) is a top view.

FIG. 11 is a plan view of a decorative plate used for the same.

FIG. 12 is a plan view of a terminal cover used in the above.

FIG. 13 is a circuit block diagram of a master device used in the third embodiment.

FIG. 14 is a plan view showing a state in which a body and a cover of a child device used in the same are unfolded.

FIG. 15 is a circuit block diagram of the slave unit of the above.

FIG. 16 is a connection diagram showing the same as above.

FIG. 17 shows the child device of the above, (a) is a front view, (b)
Is a bottom view, (c) is a side view, and (d) is a top view.

[Explanation of symbols]

 3 Case 4 Body 5 Cover 6 Flange 6a Screw insertion hole 9 Light receiving lens

Claims (5)

[Claims] 1. A heat ray sensor for detecting a heat ray emitted from a human body, a light receiving lens for condensing the heat ray from a detection region on the heat ray sensor, and a control according to the presence or absence of a person when the heat ray is detected by the heat ray sensor. The control unit that outputs a signal, the switch element that is inserted in the power supply path to the controlled device and is turned on / off by the control signal, and the power supply line to the controlled device are connected A heat-sensitive automatic switch, characterized in that it comprises a terminal portion consisting of a quick-connect terminal for connecting the above-mentioned power supply path and a power supply path, and a fixing means for housing and fixing the case inside the controlled device. . 2. A heat ray sensor for detecting a heat ray radiated from a human body, a light receiving lens for concentrating the heat ray from the detection area on the heat ray sensor, and a control depending on the presence or absence of a person when the heat ray is detected by the heat ray sensor. The control unit that outputs a signal, the switch element that is inserted in the power supply path to the controlled device and is turned on / off by the control signal, and the power supply line to the controlled device are connected A heat-sensitive automatic switch, characterized in that a terminal portion composed of a quick-connect terminal for connecting the power feeding path and the power feeding path is housed in a case, and mounting means for mounting the case in a mounting hole provided in a ceiling is provided. 3. The controlled device is a lighting device, and an illuminance sensor for detecting the illuminance of the surroundings is housed in the case, and the control unit controls the ambient illuminance detected by the illuminance sensor to be a predetermined value or less. 3. The heat-sensitive automatic switch according to claim 1, further comprising switching means for outputting the control signal only and switching the predetermined value. 4. A region in which an opening window is formed, which is detachably attached to a fixed position of a case so as to cover the front surface of the light receiving lens and limits an incident region of heat rays to the light receiving lens to a partial region of the light receiving lens. The heat-sensitive automatic switch according to any one of claims 1 to 3, further comprising a restriction attachment. 5. The heat-sensitive automatic switch according to claim 1, a heat ray sensor for a child device for detecting a heat ray emitted from a human body, and a light-receiving lens for collecting a heat ray from a detection region on the heat ray sensor for a child device. Stored in a separate case and 1
To the plurality of slave units, the slave unit input circuit connecting the one to the plurality of slave units via the signal line, and the signal line connection terminal portion including the quick connect terminal to which the signal line is connected. One to more than one is stored in the case of the automatic type automatic switch, and when at least one of the heat ray sensor and the slave unit heat ray sensor detects a heat ray, a control signal corresponding to the presence or absence of a person is output from the control unit of the heat sensitive automatic switch. By doing so, the load control system is characterized in that the thermal controlled automatic switch and one or a plurality of slave units perform on / off control of the controlled device as a load.