JPH01189587A - Detecting switch for human body - Google Patents

Abstract

PURPOSE:To facilitate the checking of an operation in a site of installation, by a method wherein a display element lighted during a period when a contact output is ON is provided and a transmission hole transmitting a light from the display element is formed in the front of a case. CONSTITUTION:Four terminals 50a-50d constitute an input terminal of a commercial power supply and output terminals with a contact (r) of a relay Ry inserted between them and the commercial power supply. The commercial power supply is rectified and smoothed by a power supply circuit 81 and stabilized by a constant voltage circuit 82. A DC power supply thus obtained is fed to a processing circuit IC to which a pyroelectric element is connected. When infrared rays radiated from a human body are detected in this constitution, an output level of an output terminal OUT turns to be 'H' for a prescribed time. Moreover, a light-sensing element PD is connected to an enable terminal ENA, and when the quantity of the light sensed by the element PD becomes large, the operation of the circuit IC is stopped. When a state wherein a control terminal of a relay control circuit 83 is connected to the terminal OUT of the circuit IC is selected, the contact (r) is turned ON when a human body is detected by the element P.

Description

Detailed Description of the Invention [Industrial Application Field 1] The present invention is a human body detection device that has a heat ray sensor and provides a non-voltage or voltage-containing contact output when there is an intruder within the detection area of the heat ray sensor. It is related to switches.

[Prior Art 1] Generally, this type of human body detection switch is used, for example, to automatically turn on a light or automatically operate a ventilation fan when entering the restroom (for example, , see Utility Model Application Publication No. 62-76227).

[Problem to be solved by the invention] When installing such a human body detection switch,
It is necessary to set the detection area to match the purpose of use, but it was impossible to check how the detection area was set until the load was actually connected.

Additionally, if the detection area is small compared to the surrounding space, it is necessary to approach the human body switch and enter the detection area in order to obtain contact output, but if the area around the human body detection switch is dark, I don't know where the place is, so I need some lighting.
In some cases, it was not possible to turn on the lights.

The present invention aims to solve the above-mentioned problems, and provides a human body detection switch that allows operation confirmation even when no load is connected, and that allows the location of the human body detection switch to be determined even when it is dark. This is what we are trying to provide.

[Means for Solving the Problems] The present invention provides a display element that lights up during a period when the contact output is on, and a light-transmitting hole that allows light from the display element to pass through, facing the front of the case. It is something that exists.

Further, a position display element that lights up during a period when the contact output is off may be provided, and a light-transmitting hole that allows light from the position display element to pass through may be provided facing the front of the case.

[Function] According to the above configuration, since the display element that lights up corresponding to the off period of the contact output is provided on the front side of the case,
It is possible to perform 6 operation checks without any load connected.

Furthermore, by providing a position display element on the front side of the case that lights up at least when the contact output is in the OFF period, it is possible to indicate the location even in the dark during the OFF period.

[Example 1] As shown in Figs. 1 to 6, a case 1 is formed by combining a body 10 made of a synthetic resin molded product and a cover 20, and is compatible with the wiring equipment specified in the JIS standard. large square 3
The mounting portion has dimensions corresponding to an individual module, and is formed so as to be able to be mounted to a metal mounting frame or a synthetic resin mounting frame specified by the industrial association standards of the Wiring Equipment Industry Association. These mounting frames are designed to be attached to an embedded box such as a switch box. The mounting portions are formed on both sides of the cover 20, and are attached to the metal mounting frame.
The cover 20 is coupled by inserting protrusions of the metal mounting frame into a pair of locking holes 21 drilled on both left and right sides of the cover 20.For synthetic resin mounting frames, the cover 20 They are connected by inserting four locking claws 22 protruding from each side edge into holding holes formed in the synthetic NTM mounting frame. Seven hooks 23 are protruded from each of the left and right edges and the rear edge of the lower surface of the cover 20, and the seven hooks 23 fit into the fitting holes 11 formed in the peripheral wall of the body 10 inside the peripheral wall of the body 10. The body 10 and the cover 20 are then fitted together.

The interior of the body 10 is separated by a partition 12 into a circuit storage chamber 13 and a pair of terminal storage chambers 14, and a pair of holding lips 15 are provided on the inner peripheral surfaces of the left and right side walls of the circuit storage chamber 13.
is provided protrudingly, and a rotation frame support plate 16 is provided in the groove between the holding lips 15.
The zero rotation frame support plate 16, which is adapted to hold both left and right ends of the frame, is formed into a substantially T-shape with the left and right intermediate portions protruding upward, and a stepped portion 16b is formed on the side edge of the vertical piece. There is. A rotation frame support lip 17 is formed on the inner circumferential portion of the rear wall of the body 10, facing the rotation frame support plate 16. Rotating frame support plate 1
6 and the upper surface of the rotating frame support lip 17 are respectively arc-shaped rotation surfaces 16a with concave central portions.

17a, and the rotating frame 30 is rotatably supported between the upper surfaces of the rotating frame support plate 16 and the rotating frame support lip 17. A first printed circuit board 40 on which a power supply circuit section is mounted is mounted inside the body 10.

The rotating surface 16 of the rotating frame support plate 16 is mounted on the printed circuit board 40.
Notches 41a and 41b are respectively formed to expose the rotary surface 17a of the rotating frame support lip 17. This printed circuit board 40 includes a partition block 12, a rotation frame support plate 16,
A space is formed between the inner bottom surface of the body 10 and the printed circuit board 40, and the circuit components mounted on the printed circuit board 40 are placed in this space. It is now possible to do so. In particular, the main circuit components on the printed circuit board 40 will be stored in a portion corresponding to the circuit storage chamber 13. Further, a boss 18 is provided in the circuit storage chamber 13 so as to protrude from the inner bottom surface of the body 10, and the second printed circuit board 42 is held by one fixing screw screwed into the boss 18. A fixing notch 43 into which the fixing screw 19 is inserted is formed on the periphery of the printed circuit board 42, and a variable resistor 5VR equipped with a slidable handle 72 is mounted on the printed circuit board 42. Above fj
A notch 41c from which a handle 72 of variable resistor (R) projects is formed at the periphery of the printed circuit board 40 of IJ1.

Terminals 50a to 50d are stored in the terminal storage chamber 14.

The terminals 50a to 50d each include a terminal plate 51, a locking spring 52 having a spring force directed toward the terminal plate 51, and a release button 53 that can press the locking spring 52 against the spring force. It has a well-known structure. One terminal storage chamber 14
A pair of terminal plates 51 and a pair of locking springs 52 are housed in, and a release button 53 is disposed so as to be shared by both locking springs 52. Each locking spring 52 is provided on the bottom wall of the body 10.
A wire insertion hole 54 is drilled correspondingly, and a part of the release button 53 is exposed so that the release button 53 can be pressed against the spring force of the locking spring 52 with a jig such as a screwdriver. It looks like this. Here, the terminals 50a to 50d are configured so that a single copper wire with a diameter of 1.6 or 2.0 for general residential wiring can be connected. A connecting piece 54 is provided in one place of the terminal plate 51 to protrude upward.
is fixed to the printed circuit board 40 by soldering, and the terminal 50a
~50d and the circuit section on the printed circuit board 40 are electrically connected.

The rotating frame 30 is formed in a frame shape in which a pair of rotating plates 31a and 31b, which are formed in a disc shape and face each other at a distance from each other, are connected by a pair of mutually parallel side frames 32, and is used as a pyroelectric sensor as a heat ray sensor. The third device mounted with element P and its peripheral circuit section
A printed circuit board 44 is mounted. Rotating plates 31a, 31
b is placed on the rotating surfaces 17a and 16a,
The rotating frame 30 is designed to be able to rotate relative to the body 10. A fixing notch 45 is formed on one side of the printed circuit board 44, and a fixing protrusion 46 is provided in a protruding manner on one side opposite to the negative side. One rotating plate 31a of the rotating frame 30 is formed with a boss 33 corresponding to the fixing notch 31a along the inner surface, and the other rotating plate 31b is formed with a boss 33 corresponding to the fixing notch 31a.
A support hole 34 into which a fixing protrusion 46 fits is formed in the support hole 34 . Therefore, by fitting the fixing protrusion 46 into the support hole 34 and screwing the fixing screw 35 made of a tapping screw into the boss 33 through the fixing notch 45, the printed circuit board 44 is fixed to the rotating frame 30. It will be done. A handle 36 is provided on the circumferential surface of one rotating plate 31a to protrude when adjusting the angle of the rotating frame 30 with respect to the body 10. Furthermore, stoppers 37a and 37b that restrict the rotation range of the rotation frame 30 by coming into contact with the inner peripheral surface of the cover 20 are provided on the outer surfaces of the two rotary plates 31a and 31b, respectively.

The printed circuit boards 40, 42, and 44 described above are connected to each other via jumper wires 47. The first printed circuit board 40 and the second printed circuit board 4 inside the body 10
2 and the third printed circuit board 44 in the rotating frame 30 is inserted into a notch 4fa formed in the first printed circuit board 40. Further, the no-amper #i47 that connects the printed circuit board 44 in the rotation frame 30 and the other printed circuit board 40°42 is connected to the rotation frame 3.
Rotating frame 30 to prevent wire breakage when rotating.
It is set to have more margin than the rotatable length of. An insulating sheet 48 is disposed on the upper surface of the printed circuit board 40 to prevent short circuits with the circuit section of the printed circuit board 44.

By the way, the pyroelectric element P mounted on the printed circuit board 44 is arranged between the both side frames 32 so that the upper surface side in FIG. ,
A lens plate 60 for setting a detection area is provided. The lens plate 60 is a flat 7-lens lens made of a material that transmits infrared rays, such as high-density polyethylene, and is formed in a rectangular shape, with a pair of engaging 7 lenses 6 on each side edge.
In addition, reinforcing ribs 62 are formed along both side edges where the engaging 7 hooks 61 are provided, and furthermore, the lens plate 6
A press-fit protrusion 63 is formed at each corner of 0. This lens plate 60 places a local part of the lens plate 60 on support ribs 39 formed along the peripheries of the rotating plates 31 a and 31 b of the rotating frame 30 , and also By engaging the engagement seven hooks 61 with the engagement recesses 38 formed at the lower part of the inner circumferential surface, the rotating frame 30 is held in a semi-cylindrical shape. The lens plate 60 is composed of a plurality of regions to form a desired detection area. Needless to say, the focus of each region is set on the detection surface of the pyroelectric element P. Here, a range of about 90 degrees within a plane substantially perpendicular to the rotation axis is set as a detection area. Since the lens plate 60 (thereby controls the detection area), when obtaining a product with a different detection area, it is only necessary to replace the lens plate 60, and the design can be changed economically. Since the flat lens plate 60 is curved as shown in FIG.

On the upper surface of the cover 20, there are rotating plates 31a and 3 of the rotating frame 30.
A pair of rotating frame holding plates 24at2 each holding 1b
4b is provided protrudingly. Rotating frame holding plate 24a.

2/1. b each has a peripheral wall, and rotation @31a, 31b rotates along the inner peripheral surface of the peripheral wall. That is, the rotating plates 31a, 31b are held between the inner circumferential surfaces of the peripheral walls of the rotating frame holding plates 24a, 24b, and the rotating surfaces 16a, 17a of the rotating frame supporting plate 16 and rotating frame holding lip 17. It rotates in this way. As described above, the rotation range of the rotation frame 30 is regulated by the stoppers 37a and 37b coming into contact with the inner circumferential surface of the cover 20, and the range is set to approximately 40° from side to side. That is, since the detection area with the rotation frame 30 fixed is approximately 90 degrees, by rotating the rotation frame 30, the detection area can be increased by 1.
It can be adjusted within a 70° range. On the front surface of the cover 20, in a part different from the rotating frame holding plates 24a and 24b,
A handle insertion hole 25 through which a knob 71 of a switch SW (to be described later) is exposed, a light receiving hole 26 through which a light receiving element PD is exposed, and a display hole 27 through which a display element LDM made of a light emitting diode is exposed are formed. A nameplate 28 is provided at a portion spanning the handle insertion hole 25, the light receiving hole 26, and the display hole 27.

Here, the nameplate 28 has a transparent hole 28a at a portion corresponding to the handle insertion hole 25, and transparent portions 28b and 28c at portions corresponding to the light receiving hole 26 and the display hole 27, respectively. At the center of one side of the cover 20 is a handle exposure hole 2 through which the handle 72 of the variable resistor VR is exposed.
9 is formed.

Attach case 1 to the mounting frame and install this part according to JIS standard 7.
A portion covered by the flash plate when the flash plate is arranged on the front side of the case 1,
This prevents anyone other than the installer from accidentally touching the handle 72.

In the cover 20, a lens cover 64 made of a synthetic resin molded product transparent to infrared rays is attached between the rotating frame holding plates 24a and 24b. The lens cover 64 is formed in a semicylindrical shape, and a pair of locking pieces 6 are provided on each side edge of the lens cover 64.
5 is provided protrudingly. As shown in FIG. 5, this locking piece 65 is locked to the inner circumferential surface of the cover 20 and
is fixed to the cover 20. The lens cover 64 is arranged so as to be in close contact with the outer surface of the lens plate 60, so as to prevent direct contact with the lens plate 60 and prevent changes in detection sensitivity due to dirt on the lens plate 60. I have to. Here, the lens plate 60 is 7I
/ Because it is a flannel lens, it is thin and bends easily, and if it gets dirty, it is difficult to wipe it off, but the lens cover 64
It has a smooth surface that prevents dirt from adhering to it, and since it is hard, some dirt can be easily wiped off, preventing changes in detection sensitivity. Furthermore, since the lens cover 62 only needs to transmit infrared rays, it can be made of a material that is opaque to visible rays. By covering the rotating frame 30 with this lens cover 62, The circuit section inside the rotating frame 30 is not visible from the outside, and the user can be prevented from feeling psychologically anxious.

The circuit section is configured as shown in FIG.

The four terminals 50a to 50d described above each constitute an input terminal of a commercial power source and an output terminal in which a contact r of a relay Ry is inserted between the commercial power source and the input terminal.

The commercial power source is rectified and smoothed by a power supply circuit 81 and stabilized by a constant voltage circuit 82 . The DC power thus obtained is supplied to the processing circuit IC to which the pyroelectric cable P is connected. The processing circuit IC is configured by externally attaching peripheral components to an integrated circuit commercially available under a name such as CF1651C, for example.
When infrared rays emitted from a human body are detected by the pyroelectric element P, the output level of the output terminal OUT is set to "H" for a certain period of time. During this time, the variable resistor V
It can be changed by adjusting R.

This adjustment range is set, for example, from about 10 seconds to about 6 minutes. Furthermore, a light receiving element PD made of CdS is connected to the enable terminal EN^, and is set so that the operation of the processing circuit IC is stopped when the number of scenes of light received by the light receiving element PD increases. The output terminal OUT of the processing circuit IC is connected to the relay control circuit 8 via the switch SW.
Connected to 3. The relay control circuit 83 is constructed by connecting a series circuit of a switch element Q made of a transistor, a relay fill L, and a display element LD made of a light emitting diode to the power supply circuit 81, and the control terminal of the switch element Q is set to "H". ``, the contact r of the relay Ry closes and the display element LD lights up. The switch SW is a three-contact slide switch, and has two states: setting the control terminal of the relay control circuit 83 to either "H" or "L", and connecting it to the output terminal OUT of the processing circuit IC. Three states can be selected. Therefore, if the control terminal of the relay control circuit 83 is manually set to either "H" or "L" by operating the switch SW,
Accordingly, the contact r becomes either on or off. Further, the control terminal of the relay control circuit 83 is connected to the processing circuit I.
If the state of connecting to the output terminal OUT of C is selected, when a human body is detected by the pyroelectric element P, the contact r is turned on for a certain period of time.

Here, the power supply circuit 81, the constant voltage circuit 82, the relay control circuit 83, and the switch SW1 light receiving element PD are mounted on the first printed circuit board 40, and the variable resistor 5VR and the capacitor C are mounted on the second printed circuit board 42. The processing circuit IC is mounted on the third printed circuit board 44.

[Example 2] In this example, as shown in FIG.
A transparent section 28d for display corresponding to the above is formed on the nameplate 28. Needless to say, a display hole is formed in the case 1 corresponding to the light transmission g28d.

As shown in Figure @9, the position display element LE is, for example,
In the case of a neon lamp connected via a resistor R between both ends of contact r of relay Ry, and when the load is a lighting fixture such as a fluorescent lamp, the preheating current of the filament increases when contact r is open. etc., it will light up. When the contact r closes, the position display element LE turns off. It is desirable that the display element LD and the position display element LE have different display colors, with the display element LD being red and the position display element LE being red.
is set to green, etc. Here, position display element LE
Although a neon lamp is used, it goes without saying that other light emitting elements such as light emitting diodes may also be used.

According to this configuration, the position display element L can be used even in dark surroundings.
If you look for the light from E and approach it, it will enter the detection area, improving the use of -m.

[Effect of the Invention 1] As described above, the present invention includes a display element that lights up during the period when the contact output is on, and a light-transmitting hole that allows light from the display element to pass through, facing the front of the case. Therefore, operation can be confirmed by blinking the six display elements without any load connected. As a result, it becomes easier to check the operation at the construction site and to easily set the detection area.

In addition, if a position display element is provided that lights up during the period when the contact output is off, and a transparent hole that allows light from the position display element to pass through is provided facing the front of the case, it is possible to Since the display element lights up, it is possible to indicate the location even in the dark, and if you approach the place where the position display element is emitting light, you can enter the detection area, and even if the surrounding space is wider than the detection area, you can still switch. can be operated easily.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a longitudinal sectional view of the same, and FIG. 4 is a front view of the same with the cover removed. Fig. 5 is a cross-sectional view of the same as above, Fig. 6 is a cross-sectional view of the rotating frame of the above in a rotated state, Fig. 7 is a circuit diagram of the circuit section used in the above, and Fig. A front view showing another embodiment, and FIG. 9 is a circuit diagram of a circuit section used in the same. DESCRIPTION OF SYMBOLS 1...Case, 28b...Transparent part, 28d...Transparent part, LD...Display element, LE...Position display element,
P...pyroelectric element. Agent Patent Attorney Ishi 1) Ai 7 Figure 2 Figure 5 Figure 6

Claims (2)

[Claims] (1) In a human body detection switch that has a heat ray sensor inside the case and provides a contact output when an intruder is detected within the detection area of the heat ray sensor formed in front of the case, during the period when the contact output is on. 1. A human body detection switch characterized in that a display element that lights up is provided, and a transparent hole that allows light from the display element to pass through is formed so as to face the front of the case. (2) In a human body detection switch that has a heat ray sensor inside the case and provides a contact output when an intruder is detected within the detection area of the heat ray sensor formed in front of the case, at least the contact output is in the off period. 1. A human body detection switch characterized by being provided with a position display element that lights up at times, and having a light-transmitting hole facing the front of the case that transmits light from the position display element.