JPH03194822A - Heat sensitive human body detecting switch - Google Patents

Abstract

PURPOSE:To execute a case simultaneously with wiring accessories such as a plug socket and a switch to facilitate the execution work by forming a case so as to be fitted to a fitting frame for wiring accessories. CONSTITUTION:A case 1 made of synthetic resin moldings is formed by jointing a body 10 and a cover 20. The case 1 is formed into a dimension corresponding to three times of a dimension of a wiring accessory (unit dimension), at least, three of which can be fitted to a fitting frame for three large rectangular units specified by Japanese industrial standard and Japan Wiring Accesories Maker Association. Consequently, only one case 1 can be fitted to the fitting frame for three large rectangular units. A circuit housing chamber 12 and a terminal housing chamber 13 are formed in the body 10. A first circuit substrate 41 on which a power circuit is mounted and a second circuit substrate 42 on which a variable resistance VR or the like are mounted are housed in the circuit housing chamber 12. The execution is performed simultaneously with a plug socket and a switch or the like to facilitate the execution work.

Description

[Detailed description of the invention] [Industrial application field]

The present invention has a heat-sensitive element built into a case that detects heat rays generated from the human body, and the load is controlled by determining the presence or absence of a person within the detection area based on the output signal of the heat-sensitive element. This is a type of human body detection switch.

[Conventional technology]

BACKGROUND ART Conventionally, this type of thermal human body detection switch has been used for purposes such as automatically turning on and off lights depending on the presence or absence of a person in a room. Therefore, the case of a thermal human body detection switch is generally configured to be directly attached to a wall or ceiling.

[Problem to be solved by the invention]

In the above conventional configuration, the heat-sensitive human body detection switch had to be installed using a different construction method from that of other electrical outlets, switches, and other wiring devices, which required special consideration from the contractor. . The present invention aims to solve the above-mentioned problems, and aims to provide a thermal human body detection switch that can be constructed using the same construction method as electrical outlets, switches, etc., and that facilitates construction work. .

[Means to solve the problem]

In order to achieve the above object, the structure of claim 1 includes a case fixed to a mounting surface, a rotating frame rotatable around one virtual axis substantially parallel to the front surface of the case, and a rotating frame. A thermal human body detection switch is equipped with a heat-sensitive element disposed inside the case to receive heat rays from the front of the case, and detects the presence or absence of a person within the detection area based on the output signal of the heat-sensitive element. A signal processing circuit that generates a control signal to a switch element for load control based on the output signal of the heat-sensitive element is installed inside the case, and up to three standardized wiring devices can be attached to the case. The case is provided with a mounting portion that can be attached to a mounting frame for a wiring device that has been standardized to allow for mounting, and the case is formed to have a size corresponding to one of the above-mentioned wiring devices. Further, in the configuration of claim 2, a switch element that controls the load based on the output signal of the heat-sensitive element and a signal processing circuit that generates a control signal to the switch element are housed in the case, and the case includes: In addition to providing a mounting part that can be attached to a standardized wiring device mounting frame so that up to three standardized wiring devices can be attached, the case can be used for two of the above-mentioned wiring devices. They are formed to the corresponding dimensions. In the structure of claim 3, a switch element that controls a load based on an output signal of the heat-sensitive element and a signal processing circuit that generates a control signal to the switch element are housed in the case, and the case is equipped with a standardized In addition to providing a mounting part that can be attached to a mounting frame for wiring devices that is standardized so that up to three wiring devices can be attached, the case can be installed in a manner that can accommodate up to three of the above-mentioned wiring devices. It is formed according to the dimensions. In the configuration of claim 4, the case includes an automatic mode in which the load is controlled based on the output signal of the thermal element, an on mode in which the load is forcibly turned on, and an off mode in which the load is forcibly turned off. The mode selection switch is a rotary switch, and the operating handle is exposed on the front of the case. In the configuration of claim 5, the case includes an automatic mode in which the load is controlled based on the output signal of the thermal element, an on mode in which the load is forcibly turned on, and an off mode in which the load is forcibly turned off. A mode selection switch for selecting one of these is included, the mode selection switch is a push button switch, and the operation handle is exposed on the front of the case. In the structure of claim 6, a lens that covers the front surface of the heat-sensitive element and focuses heat rays from the front surface of the case onto the heat-sensitive element is attached to the rotating frame, and a protective cover that covers the front surface of the lens is attached to the case. The protective cover has slits at key points that allow heat rays to pass through. In the structure of claim 7, an opening window is provided in the rotating frame in front of the heat-sensitive element, and a reflective layer is provided on the inner circumferential surface between the heat-sensitive element and the opening window to condense heat rays incident from the opening window onto the heat-sensitive element. It has been established.

[Effect]

According to the structures of claims 1 to 3, the case is configured so that it can be attached to a mounting frame for wiring devices, so it can be constructed using the same construction method as wiring devices such as outlets and switches. This makes the construction work easier for the contractor. Furthermore, in the configuration of claim 1,
Since the case is designed to have dimensions equivalent to one wiring device, up to three wiring devices can be attached to the standard mounting frame, which can accommodate up to three wiring devices. It is possible to provide multiple functions by providing multiple units at one location. In the configurations of claims 4 and 5, by providing a mode selection switch and making the mode selection switch a rotary switch or a push button switch, a relatively large operation handle can be provided within a limited dimension, and the mode selection switch can be set as a rotary switch or a push button switch. This has the advantage that the selection switch can be easily operated. In the structure of claim 6, by providing a lens in front of the heat-sensitive element, the incident direction and amount of heat rays on the heat-sensitive element can be controlled by I.
Furthermore, the lens can be protected by the protective cover, and the field of view of the heat-sensitive element can also be controlled by the slit provided in the protective cover. That is, the detection area and sensitivity can be adjusted by the lens and the slit in the protective cover. In the structure of claim 7, the field of view of the heat-sensitive element can be controlled by the reflective layer formed on the inner circumferential surface of the rotating frame, and this becomes an effective means when it is necessary to widen the field of view of the heat-sensitive element.

Embodiment 1 As shown in FIGS. 1 to 4, a case 1 is made of a synthetic resin molded product and is formed by combining a body 10 and a cover 20. As shown in FIGS. Case 1 is equivalent to three times the dimensions of wiring devices (referred to as unit dimensions) that can be attached to a mounting frame for up to three large rectangular devices as standardized by JIS standards and the Japan Wiring Appliances Manufacturers Association. It is formed to the dimensions. Therefore, only one case 1 can be attached to a mounting frame for three large squares. The case 1 has a cover 20 which serves as a mounting part to the mounting frame, and has a mounting hole 21 that engages with a holding claw of a metal mounting frame, and a mounting claw 22 that engages with a holding hole of a synthetic resin mounting frame.
is formed on both sides of the On the back surface of the cover 20, connecting legs 23 with connecting claws 23a at the tips thereof are protruded at three locations, and each connecting leg 23 is inserted into a connecting hole 11 drilled in the circumference of the body 10 to form a connecting claw. 23a is locked to the periphery of the coupling hole 11,
A cover 20 is coupled to the body 10. Inside the body 10, there are a circuit storage chamber 12 and a terminal storage chamber 13.
is formed. Further, a pair of support ribs 14 having an arcuate end surface are protruded from the bottom surface of the body 10. A zero circuit storage chamber 12 has a first support rib 14 in which a power supply circuit is mounted.
A circuit board 41 and a second circuit board 42 on which a variable resistor VR and the like are mounted are installed. An insulating sheet 49 is laminated on the surface of the first circuit board 41 . In the terminal storage chamber 13,
A terminal 50 consisting of a connecting terminal is delivered. The terminal 50 is
Consisting of a locking spring 51, a terminal plate 52, and a release button 53, the wire inserted through the wire insertion hole 15 drilled in the bottom of the body 10 is connected to the locking spring 51 by the spring force of the locking spring 51. It is held by being held between the terminal plate 52 and the terminal plate 52. In addition, a button operation hole 16 bored in the bottom of the body 10
By inserting a jig such as a screwdriver and operating the release button 53, the lock spring 51 is bent and separated from the terminal board 52, so that the electric wire can be easily pulled out. The terminal board 52 is soldered to the first circuit board 41. The rotating frame 30 is formed in a frame shape in which a pair of end plates 31 formed in a disc shape are connected by a pair of side frames 32. The holding plate 24 is held so as to be rotatable by sliding on the tip surface of the support rib 14 between the inner peripheral surface of the circumferential wall of the semicircular holding plate 24 protruding from the support rib 14 and the tip surface of the support rib 14. A direction adjustment knob 30a is protruded from a part of the rotation frame 30, and the rotation frame 30 can be rotated by manually operating the direction adjustment knob 30a. A third circuit board 43 is attached to the rear of the side frame 32 in the rotation frame 30 . Mounted on the third circuit board 43 are a heat sensitive element 2 made of a pyroelectric element and a signal processing circuit 3 made of an integrated circuit that determines the presence or absence of a person based on the output signal of the heat sensitive element 2. Further, in the rotation frame 30, a lens 33 made of a Fresnel lens is mounted on the front side of the side frame 32 in a curved manner so as to follow the circumferential surface of the end plate 31. The lens 33 is made of a material such as high-density polyethylene so that heat rays can easily pass through it, and has multiple focal points to divide the detection fII region of the heat-sensitive element 2 into multiple regions. . In other words, the pyroelectric element that is the heat-sensitive element 2 is a differential type sensor, and an output signal can only be obtained when the amount of incident heat ray changes. Therefore, the detection area of the heat-sensitive element 2 is divided into multiple small areas. By dividing it, the slightest movement of a person can be detected and output can be obtained continuously. Since the lens 33 is thin, the lens 33
A protective cover 34 that covers the lens 33 is attached to the front surface of the lens 33. The protective cover 34 is usually colored because infrared rays only need to be transmitted therethrough, and also has a blinding function that prevents the inside of the rotating frame 30 from being seen. The protective cover 34 is
Like the lens 33, it is made of a material such as high-density polyethylene so that infrared rays can easily pass therethrough. The circuit parts mounted on the circuit boards 41 to 43 have a configuration as shown in FIG. That is, there are five terminals 50 connected to the external circuit, two of which are connected to the load. In addition, the remaining three are mode selection switches S
W and commercial power AC. The mode selection switch SW can select an automatic mode in which the load is automatically controlled based on the output of the thermal element 2, an on mode in which the load is forcibly turned on, and an off mode in which the load is forcibly turned off. It is a contact switch, and the common contact is commercial power supply A.
It is connected to one end of C. The other end of the commercial power supply AC is connected to one terminal 50, and among the contacts of the mode selection switch SW, an automatic mode contact and an on mode contact are connected to the terminal 50, respectively. When the on mode is selected, both ends of the commercial power supply AC are connected to both terminals connected to the load. When the off mode is selected, the commercial power supply AC is disconnected from the load. In the automatic mode, the commercial power supply AC is rectified and smoothed in the power outlet circuit 44 and stabilized in the constant voltage circuit 45. The DC power output from the constant voltage circuit 45 supplies power to the signal processing circuit 3 to which the thermosensitive element 2 is connected. The signal processing circuit 3 is configured by externally attaching peripheral components to an integrated circuit commercially available under the name CF1651C, for example, and when a heat ray radiated from a human body is detected by the heat sensitive element 2, the output terminal 01JT is activated. It is configured to keep the output level at "H" for a certain period of time. This time is the second
This can be changed by adjusting a variable resistor VR mounted on the circuit board 42 of the circuit board 42. Furthermore, a light receiving element PD made of CdS is connected to the enable terminal EN^, and when the amount of light received by the light receiving element PD exceeds a predetermined amount, the operation of the signal processing circuit 3 is stopped. There is. An output terminal OUT of the signal processing circuit 3 is connected to a relay control circuit 46. The relay control circuit 46 is a series circuit of a switching element Q made of a transistor, a relay Ry, and a display element LD made of a light emitting diode, connected between both ends of the power supply circuit 45, and a control terminal of the switching element Q. While R is "H", contact r of relay Ry is closed and display element LD is turned on. Therefore, when heat rays emitted from the human body are detected by the heat-sensitive element 2, the contact r of the relay Ry is turned on for a certain period of time, and when the automatic mode is selected by the mode selection switch SW, the contact When r is turned on, commercial power supply AC is connected to load L via contact r, and the load is turned on. The light receiving element PD and the display element LD are arranged so as to face the front surface of the cover 20 below the rotation frame 30, as shown in FIG. In addition, the handle 47 of the variable resistor VR
is exposed on the front side of the case 1 at the side of the case 1. By the way, during construction on a wall surface or the like, the case 1 is attached to a mounting frame 60 for a wiring device. For example, as shown in FIG.
It is formed into a frame shape in which both ends of the case 1b are connected by mounting pieces 62, and each side piece 61a, 61b is provided with a case 1.
A retaining claw (not shown) is protruded to be inserted into the mounting hole 21 formed on the side surface of the side piece 61a, and a notch hole 63 is bored in a portion of one side piece 61a corresponding to the retaining claw.
By inserting and prying a jig such as a screwdriver, a part of the side frame 61a can be plastically deformed so that the holding claws can be inserted into the mounting holes 21. Each mounting piece 62 is provided with a long hole 64 into which a box screw is inserted so that the mounting frame 60 can be attached to an embedded box such as a switch box, and a decorative plate is provided to cover the front surface of the mounting frame 60. For attachment, a screw hole 65 into which a plate screw is screwed is formed. moreover,
A metal fitting mounting hole 66 is bored so that a well-known scissor metal fitting for sandwiching a wall panel or the like between the mounting frame 60 and the mounting frame 60 can be attached. According to the above configuration, the case 1 equipped with the heat-sensitive element 2 for detecting the presence or absence of a person and the mode selection switch SW for selecting the load operation mode are separately provided.
The case 1 can be mounted in a position where it is easy to detect the presence or absence of a person, and the mode selection switch SW can be placed in a place where it can be easily operated by a person.

Embodiment 2 In this embodiment, as shown in FIG. 7, the case 1 is formed to have a size equivalent to two unit dimensions of the wiring device. In this case, the terminal storage chamber 13 can only be large enough to accommodate four terminals 50, so as shown in FIG. 8, two terminals 50 are connected to the commercial power supply AC, and the remaining The two terminals 50 are connected to a load. Therefore, the mode selection switch SW in the first embodiment is omitted. In this configuration, the case 1 is made smaller than in the first embodiment, so it is effective in making the case 1 less noticeable.

Embodiment 3 In this embodiment, as shown in FIGS. 9 and 10, the case 1 is formed to have a size corresponding to one unit size of a wiring device. In the case of this configuration, the space inside the case 1 is small, so inside the case 1, as shown in FIG.
We supply bags with the minimum parts necessary for detecting heat rays, such as heat sensitive element 2, signal processing circuit 3, light receiving element PD, variable resistor VR, etc.
There are 5063 terminals. Therefore, the power supply section 44,
The constant voltage circuit 45 and relay control circuit 46 are external. According to this configuration, up to three cases 1 can be mounted on the mounting frame 50.
Since it is possible to attach a plurality of heat-sensitive elements 2 to one place, it is possible to arrange a plurality of heat-sensitive elements 2 at one place, and the range of uses can be expanded. Furthermore, since the case 1 can be further miniaturized compared to the second embodiment, it is particularly effective in making the case 1 less noticeable.

Embodiment 4 In this embodiment, the mode selection switch SW is provided at a position as shown in FIG. That is, the common contact of the mode selection switch SW is connected to the base of the transistor that is the switching element Q, the contact for the on mode among the other contacts is the positive output terminal of the constant voltage circuit 45, and the contact for the off mode is connected to the positive output terminal of the constant voltage circuit 45. The negative output terminal of the constant voltage circuit 45 and the automatic mode contact are connected to the output terminal OUT of the signal processing circuit 3. Thus, the mode selection switch SW is mounted on the first circuit board 41. The mode selection switch SW is a rotary switch, and the operation handle 48 is a first
As shown in FIGS. 2 and 13, it is provided so as to be exposed at the front of the case 1 below the rotation frame 30. In this way, by incorporating the mode selection switch SW, which is a rotary switch, into the case 1, the operating handle 48 can be made relatively large even in a limited space, making it easier to operate the mode selection switch SW. It is. Furthermore, the operational feel during switching is also excellent. The other configurations are the same as those in implementation p141, so the explanation will be omitted.6

[Embodiment 5] This embodiment is based on the mode selection switch SW in Embodiment 4.
This is a push button switch. Similarly to the rotary switch, in the case of a push button switch, the operating handle can be made relatively large in a limited space, making it easier to operate the mode selection switch. The other configurations are the same as those in the fourth embodiment, so their explanation will be omitted.

Embodiment 6 In this embodiment, a slit 35 as shown in FIG. 15 is formed in the protective cover 34. As shown in FIG. By forming the slit 35 in the protective cover 34, the lens 33
It is possible to partially control the amount of heat rays incident on the area. If the protective cover 34 is made of a material that allows heat rays to pass through, the amount of transmitted light can be varied between the slit 35 and the non-slit 35 portion. Furthermore, if the protective cover 34 is made of a material that does not allow heat rays to pass through, only the heat rays that pass through the slit 35 can enter the lens 33 . In this way, by controlling the amount and direction of incidence of the heat rays using the slits 35, the detection area can be set in a desired shape.

[Example 7] In this example, as shown in FIGS. 16 and 17,
The lens and protective cover have been removed. Instead, a reflective frame 37 with an opening window 36 in the center is attached to the front of the side frame 32.The inner peripheral surface of the reflective frame 37 is re-plated with a metal film affixed to it. A concave mirror is formed by the reflective layer 38.The reflective layer 38 can be formed on the entire inner circumferential surface of the reflective frame 37 or only on a part of it. You can. By forming such a reflective layer 38, the reflective frame 3
Not only the heat rays that directly enter the heat-sensitive element 2 through the opening window 36 of 7, but also the heat rays reflected by the reflective layer 38 enter the heat-sensitive element 2, so that the detection area can be expanded. Further, by controlling the size of the opening window 36 and the shape of the reflective layer 38, it is possible to control the range of the detection area, and the detection area can be set to a desired shape.

【Effect of the invention】

As described above, according to the structures of claims 1 to 3, the case is configured so that it can be attached to a mounting frame for wiring devices, so the same construction method as that for wiring devices such as outlets and switches is required. This has the effect of making the construction work easier for the contractor. In addition, in the structure of claim 1, since the case is formed to have a size corresponding to one wiring device, it is difficult to use the standard mounting frame that can mount up to three wiring devices. Up to three units can be attached, and providing multiple units at one location has the advantage that it can be multi-functional. In the configurations of claims 4 and 5, by providing a mode selection switch and making the mode selection switch a rotary switch or a push button switch, it is possible to provide a relatively large operating handle within a limited size, and the mode selection switch can be set as a rotary switch or a push button switch. This has the advantage that the switch can be easily operated. In the structure of claim 6, by providing the lens in front of the heat-sensitive element, it is possible to control the direction and amount of incidence of heat rays on the heat-sensitive element, and furthermore, the lens is protected by the protective cover, and the protective cover is provided with a lens. There is an advantage that the field of view of the heat-sensitive element can be controlled also by the provided slit. In other words, the detection area and sensitivity can be adjusted using the lens and the slits in the protective cover. In the structure of claim 7, the field of view of the heat-sensitive element can be controlled by the reflective layer formed on the inner circumferential surface of the rotating frame, and this becomes an effective means when it is necessary to widen the field of view of the heat-sensitive element.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing Embodiment 1 of the present invention, FIG. 2 is a front view of the same with the cover removed, FIG. 3 is a sectional view of the same, FIG. 4 is a rear view of the same, and FIG. Figure 6 is a circuit diagram of the circuit used in the above, and Figure 6 is a front view of the same mounted on the mounting frame.
FIG. 7 is a sectional view showing a second embodiment of the present invention, FIG. 8 is a circuit diagram of a circuit used in the same, and FIG. 9 is a front view of a third embodiment of the present invention attached to a mounting frame. FIG. 10 is a rear view of the same as above, and FIG. 11 is a circuit diagram of a circuit section used in the above. Fig. 12 is a longitudinal sectional view showing a fourth embodiment of the present invention, Fig. 13 is a front view of the same with the cover removed, Fig. 14 is a circuit diagram of the circuit section used in the same, Fig. 15 (a) (b) 16 is a longitudinal sectional view showing a seventh embodiment of the present invention, and FIG. 17 is a sectional view of the same. DESCRIPTION OF SYMBOLS 1...Case, 2...Thermal element, 3...Signal processing circuit, 21...Mounting hole, 22...Mounting claw, 30...
- Rotating frame, 33... Lens, 34... Protective cover, 35... Slit, 36... Opening window, 37...
Reflective frame, 38... Reflective layer, 48... Operation handle,
50...Mounting frame, Ry...Relay SW...Mode selection switch.

Claims (7)

[Claims] (1) A case that is fixed to the mounting surface, a rotating frame that is rotatable around an imaginary axis that is approximately parallel to the front of the case, and a rotating frame that is arranged inside the rotating frame to prevent heat rays from coming from the front of the case. A thermal human body detection switch is equipped with a heat-sensitive element that receives light and detects the presence or absence of a person within a detection area based on the output signal of the heat-sensitive element. The case is equipped with a signal processing circuit that generates control signals to switch elements for load control, and the case is designed for use with standardized wiring devices so that up to three standardized wiring devices can be installed. 1. A heat-sensitive human body detection switch, comprising a mounting portion that can be attached to a mounting frame, and formed to have a size corresponding to one of the above-mentioned wiring devices. (2) A case that is fixed to the mounting surface, a rotating frame that can freely rotate around an imaginary axis that is approximately parallel to the front of the case, and a rotating frame that is arranged inside the rotating frame to prevent heat rays from coming from the front of the case. A thermal human body detection switch is equipped with a heat-sensitive element that receives light and detects the presence or absence of a person within a detection area based on the output signal of the heat-sensitive element. A switch element that controls the load and a signal processing circuit that generates a control signal to the switch element are installed, and the case is standardized so that up to three standardized wiring devices can be attached. 1. A thermal human body detection switch comprising: a mounting portion that can be attached to a mounting frame for a wiring device; (3) A case that is fixed to the mounting surface, a rotating frame that can freely rotate around an imaginary axis that is approximately parallel to the front of the case, and a rotating frame that is arranged inside the rotating frame to prevent heat rays from coming from the front of the case. A thermal human body detection switch is equipped with a heat-sensitive element that receives light and detects the presence or absence of a person within a detection area based on the output signal of the heat-sensitive element. A switch element that controls the load and a signal processing circuit that generates a control signal to the switch element are installed, and the case is standardized so that up to three standardized wiring devices can be attached. 1. A heat-sensitive human body detection switch comprising a mounting portion that can be attached to a mounting frame for a wiring device, and having a size corresponding to three of the wiring devices. (4) In the above case, there is an automatic mode that controls the load based on the output signal of the thermal element, an on mode that forces the load on, and an off mode that forces the load off. 4. The heat-sensitive human body detection switch according to claim 3, wherein a mode selection switch for selecting one of the two types is housed, the mode selection switch is a rotary switch, and an operation handle is exposed on the front surface of the case. (5) The above case includes an automatic mode that controls the load based on the output signal of the thermal element, an on mode that forces the load on, and an off mode that forces the load off. 4. The heat-sensitive human body detection switch according to claim 3, wherein a mode selection switch for selecting one of the two types is housed, and the mode selection switch is a push button switch, and the operation handle is exposed on the front surface of the case. (6) The rotating frame is equipped with a lens that covers the front of the heat-sensitive element and focuses heat rays from the front of the case onto the heat-sensitive element, and the case is equipped with a protective cover that covers the front of the lens. Claim 1, characterized in that the protective cover has slits formed at important points to allow heat rays to pass therethrough.
3. The thermal human body detection switch according to any one of 3 to 3. (7) The rotating frame has an opening window in front of the heat-sensitive element,
According to any one of claims 1 to 3, further comprising a reflective layer provided on the inner circumferential surface of a region between the heat-sensitive element and the aperture window to condense heat rays incident from the aperture window onto the heat-sensitive element. Heat-sensitive human body detection switch.