JP2003303535A - Heat ray type human sensing sensor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat ray type human sensing sensor device capable of using a switch box and making outer appearance attractive. <P>SOLUTION: This heat ray human sensing sensor device is equipped with the switch box 1; a human sensing sensor 2 fit to the switch box 1 with box screws 6; a decorative plate 33 mounted on the bottom side of a flange part 21 provided in the body of the human sensing sensor 2; and a box cover 4 covering the body of the human sensing sensor 2 and the switch box 1 together with the decorative plate 3 and exposed to a constructing surface. The box cover 4 is formed like a bowl whose top surface is circularly opened and has a base part 41 in which the flange part 21 comes in contact with the bottom surface side, as a bottom wall. A window hole 41a into which the rear part of the body of the human sensing sensor 2 is inserted and two screw insertion holes 41b through which the box screws 6 are inserted are provided in the base part 41. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat ray type human sensor system for detecting the presence or absence of a person within a predetermined detection area by detecting the heat ray emitted from the human body.

[0002]

2. Description of the Related Art Conventionally, there has been provided a heat ray type human sensor for detecting the presence or absence of a person in a predetermined detection area by detecting the heat ray emitted from the human body. This kind of heat ray type human sensor is used for turning on and off loads such as a lighting load and a ventilation fan, and is often attached to a construction surface such as a ceiling or a wall surface. Here, the ceiling-mounted heat ray type human sensor includes a body including a body having a cylindrical portion at the center of the upper surface of a flange portion having a circular outer shape, and a cover coupled to the cylindrical portion. In general, the upper part of the body is inserted into a through hole formed in a ceiling panel which is a ceiling material. For this reason, the flange portion has two mounting holes for inserting a box screw that is screwed into a switch box embedded in the ceiling and a tapping screw used when the body is directly attached to the ceiling, and a ceiling panel. There are formed two operation holes for exposing the tightening screws provided in the two mounting tools used for fixing to, and a mounting groove as a mounting portion for mounting and dismounting the mounting tool.

By the way, a hot-wire type human sensor for ceiling mounting may be used in factories and the like. However, in factories where the switch box is not embedded in the ceiling, as shown in FIG. The human-body sensor 2 is attached to the embedding box 50 by arranging an embedding box 50 made of steel plate having an octagonal shape and having an opening on the lower surface side exposed on the construction surface. Here, the human sensor 2 is embedded in the embedded box 50.
Knockout hole 5 for connecting conduits formed on the peripheral wall 51 of the
An electric wire 70 is wired through 1a.

The human sensor 2 is a ball-shaped movable body 25 having a sensor element (not shown) formed of a pyroelectric infrared sensor and a light receiving lens 26 provided on the front side of the light receiving surface of the sensor element. The light receiving lens 26 is exposed from the central portion of the flange portion, and the opening window 31 for exposing the light receiving lens 26 of the movable body 25 is also provided in the central portion of the decorative plate 3 made of synthetic resin mounted on the lower surface side of the flange portion. Has been formed.

[0005]

However, in the case where the human sensor 2 is arranged by using the embedding box 50 made of a steel plate whose outer peripheral shape is an octagonal shape and whose lower surface is opened as described above, There was a problem that it did not look good.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a heat ray type human sensor device which can use a switch box and can improve the appearance.

[0007]

In order to achieve the above object, the invention according to claim 1 is a box screwed into a screw hole of a tongue provided on the opening side of a switch box exposed on the construction surface. Person equipped with a body having a circular flange portion with a mounting hole for inserting a screw at the front end and a sensor element for detecting heat rays emitted from a human body in a detection area set in front of the body A sensor, a decorative plate mounted on the flange so as to cover the front side of the flange, and a box cover arranged so as to cover the body of the sensor and the switch box together with the decorative plate and to be exposed on the construction surface. The switch box provided for the wiring device can be used, and the appearance can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the box cover includes a base portion arranged so that a rear surface of the flange portion abuts on a front surface side, and the base portion is provided with the container. Since the window hole into which the rear part of the body is inserted and the screw insertion hole into which the box screw is inserted are formed, the box cover has the base portion held between the switch box and the flange portion. Becomes
Since it is not necessary to directly fix the box cover to the construction surface, the mechanical strength of the box cover is less restricted than when the box cover is directly fixed to the construction surface.

According to a third aspect of the present invention, in the second aspect of the present invention, the flange portion is formed with an attaching portion for attaching and detaching an attaching tool used for fixing the motion sensor to the ceiling material. Since the portion has locking claws protruding from the mounting portion, the human sensor is temporarily attached to the box cover by engaging the locking claw with the mounting portion of the flange portion during construction. The human sensor can be fixed, and the human body sensor is temporarily fixed to the box cover, and the human body sensor is attached to the box cover by tightening the box screw, and then the decorative plate is attached to the flange portion. Since it is sufficient to attach the, the construction work becomes easy.

According to a fourth aspect of the present invention, in the second or third aspect of the present invention, a guide portion for guiding the box screw to the screw hole of the tongue piece is provided on the rear surface of the base portion so as to project therefrom. Even if the base portion and the tongue piece are separated from each other, the box screw can be easily screwed into the screw hole of the tongue piece, which further facilitates the construction work.

According to a fifth aspect of the present invention, in the second to fourth aspects of the present invention, the base portion has a circular outer shape, and the base portion projects to the side opposite to the construction surface over the entire outer peripheral edge. Since the ribs are provided so as to project, the decorative plate is surrounded by the ribs of the base portion, and the waterproof property can be enhanced.

According to a sixth aspect of the present invention, in the first to fifth aspects of the invention, a releasable knockout portion that forms a wiring insertion port is formed on the peripheral wall of the box cover. Accordingly, by removing the knockout portion to form the wiring insertion opening, it is possible to perform the wiring through the wiring insertion opening, and it is possible to prevent the unnecessary wiring insertion opening from being generated, which is aesthetically pleasing. It becomes possible to raise.

According to a seventh aspect of the present invention, in the sixth aspect of the invention, the box cover is provided with a knockout portion corresponding to a plurality of types of wiring insertion openings.
It becomes possible to cope with various wiring forms.

According to an eighth aspect of the present invention, in the sixth or seventh aspect of the invention, the box cover is a synthetic resin molded product, and the knockout portion is formed thinner than other portions. Therefore, the work of cutting off the knockout portion is facilitated.

According to a ninth aspect of the present invention, in the first to eighth aspects of the present invention, an annular waterproof packing sandwiched between the construction surface and a rear end portion of the peripheral wall of the box cover is provided. Therefore, it is possible to prevent water droplets and dust from entering the inside of the box cover through the space between the box cover and the construction surface.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIGS. 1 to 3, a heat ray type human sensor according to the present embodiment is a switch box 1 exposed on a construction surface and a person attached to the switch box 1. The sensor 2 and the decorative plate 3 made of synthetic resin mounted on the lower surface side of the flange portion 21 provided on the body of the human sensor 2, the body of the human sensor 2 and the switch box 1 together with the decorative plate 3. And a box cover 4 (see FIG. 4) made of synthetic resin, which is arranged so as to be exposed on the construction surface. The heat ray type human sensor device of the present embodiment is arranged such that the front surface side is the lower side and the rear surface side is the upper side.

The switch box 1 is generally used when mounting a wiring device such as a switch or an outlet, and has a rectangular parallelepiped shape with an opened lower surface in FIG. 1, and has a screw hole 12a on the opening side. The pair of tongue pieces 12 that are provided are spaced apart from each other in the longitudinal direction (the left-right direction in FIG. 1).

The human sensor 2 has a structure suitable for mounting on a ceiling, and the flange portion 2 has a circular outer shape.
1 includes a body 20 having a tubular portion 22 in the central portion of the upper surface of 1, and a cover 23 coupled to the tubular portion 22. Four assembly pieces 22a are provided on the upper edge of the cylindrical portion 22 of the body 20 so as to project upward, and each assembly piece 22a has an assembly hole 22b. An assembling claw 23a is provided on the lower side surface of the cover 23 so as to project into the assembling hole 2a.
When the assembly claw 23a engages with 2b, the body 20
And the cover 23 are joined together.

A movable body 25 formed in the shape of a ball is rotatably attached to the body 20. Inside the movable body 25, a sensor element (not shown) composed of a pyroelectric infrared sensor, etc. A first circuit board (not shown) made of a printed board on which is mounted is installed.

A hemispherical light receiving lens 26 is provided on the front side of the light receiving surface of the sensor element in the movable body 25, and heat rays are incident on the sensor element through the light receiving lens 26. The light receiving lens 26 is made of high-density polyethylene resin so that infrared rays can easily pass therethrough. Further, the light receiving lens 26 is formed in milky white.

The light-receiving lens 26 is an assembly of a large number of lenses, and by changing the amount of light collected by the sensor element depending on the direction, minute movement of a heat source that radiates heat rays changes the heat dose. Can be detected as. Therefore, the sensor element is the light receiving lens 26.
It is possible to constantly obtain output while a person is present in the detection area formed by.

On the flange portion 21 of the body 20,
A box screw 6 screwed into a screw hole 12a of a tongue piece 12 of the switch box 1 and a mounting hole 2 for inserting a tapping screw (not shown) used when the body is directly attached to the ceiling.
Two 7 are formed. Both mounting holes 27 are flanges 2
Both mounting holes 2 are provided on the opposite sides of the center of 1
It is formed in a long hole shape having a long axis that is orthogonal to the direction in which 7 is connected. Further, on a straight line which is orthogonal to a straight line passing through both the mounting holes 27 and which passes through the center of the flange portion 21, two fixtures (not shown) used for fixing to a ceiling material such as a ceiling panel. 2) are formed with two operation holes 28 for exposing the tightening screws respectively provided in (2). The operation hole 28 is formed in a so-called daruma hole shape in which the central side of the flange portion 21 is narrow and the peripheral side is wide. Further, on the upper surface of the flange portion 21, mounting grooves 29 are formed on both sides of the operation hole 28 as a mounting portion for mounting and dismounting the mounting tool.

The movable body 25 is formed in a ball shape as described above, and is provided with a hemispherical light receiving lens 26, and the light receiving lens 26 is exposed through an opening window 21a formed in the central portion of the flange portion 21. The shape is attached to the body 20.

The human sensor 2 is provided with a decorative plate 3 that covers the lower surface of the flange portion 21 so that the lower surface of the flange portion 21 is not exposed. An opening window 31 is formed in the central portion of the decorative plate 3 at a portion corresponding to the opening window 21a provided in the body 20. Therefore, with the decorative plate 3 attached to the body 20, the light receiving lens 26 is exposed to the lower surface side of the decorative plate 3 through the opening window 31. The decorative plate 3 is formed so as to engage with the flange portion 21 in a concavo-convex manner.

The cover 23 accommodates a second circuit board (not shown) made of a printed board on which a plurality of terminals (not shown) for connecting external electric wires are mounted.
These terminals are so-called quick-connect terminals, and are a terminal board mounted on the second circuit board, a locking spring that holds an external electric wire between the terminal board, and an external electric wire held by the locking spring. And a release button that is operated when the button is removed. The locking spring is formed by bending an elastic metal plate, and the spring force holds the external electric wire between it and the terminal plate, and the edge of the external electric wire is bitten into the external electric wire to form the external electric wire. Prevent it from coming off. The release button is provided to separate the locking spring that holds the external electric wire from the external electric wire.

The external electric wire is inserted into the body through an electric wire insertion port (not shown) formed on the upper surface of the cover 23, and is clamped between the terminal plate and the lock spring. The release button can be operated by inserting the tip of the driver into an operation hole provided adjacent to the wire insertion port.

The second circuit board housed in the cover 23 is electrically connected to the first circuit board housed in the movable body 25 via a tape wire or the like, and is connected to the second circuit board. Controls switch elements based on the output of a switch element (eg, relay contact, triac, etc.) or a sensor element inserted in series in a series circuit of a commercial power source and a load (eg, lighting load, ventilation fan, etc.) A signal processing circuit and the like are mounted.

The box cover 4 is formed in a bowl shape with its upper surface opened in a circular shape, and has a base portion 41 as a bottom wall which is arranged so that the upper surface of the flange portion 21 abuts on the lower surface side. . The box cover 4 is made of synthetic resin as described above, and is formed in the same color as the decorative plate 3 in order to enhance the appearance.

The outer shape of the base portion 41 of the box cover 4 is circular, and the window portion 41a into which the rear portion of the body of the human sensor 2 is inserted and the box screw 6 are formed in the base portion 41.
Is formed with two screw insertion holes 41b. In short, in the box cover 4, the base portion 41 is held between the switch box 1 and the flange portion 21 of the motion sensor 2. By the way, the outer shape of the tubular portion 22 of the body 20 of the motion sensor 2 is formed into an oval shape with both sides of the circle cut off, and the window hole 41a of the base portion 41 is formed.
Is formed in an oval shape that substantially matches the outer shape of the tubular portion 22. Therefore, the rear portion of the body of the human sensor 2 is provided with the window hole 41.
The box cover 4 and the human sensor 2 can be positioned relative to each other by inserting into the a and bringing the upper surface of the flange portion 21 into contact with the lower surface of the base portion 41. Further, the two screw insertion holes 41b of the base portion 41 are the window holes 41.
It is formed on both sides of a in the longitudinal direction.

On the upper surface of the base portion 41, a guide portion 43 formed of a cylindrical boss for guiding the box screw 6 to the screw hole 12a of the tongue piece 12 of the switch box 1 (see FIGS. 3 and 6).
And FIG. 7) are provided so as to project from the peripheral portion of each screw insertion hole 41b, and even if the distance between the base portion 41 and the tongue piece 12 of the switch box 1 is relatively large, the box screw 6 is tongue-shaped. It can be easily screwed into the screw hole 12a of the piece 12.

Further, the base portion 41 has a circular outer shape, and a rib 44 projecting to the opposite side to the construction surface is provided over the entire circumference of the outer peripheral edge, as shown in FIG. Since the upper end of the peripheral wall 33 of the decorative plate 3 and the rib 33 overlap (that is, the decorative plate 3 is surrounded by the rib 33 over the entire circumference), the waterproof property can be improved.

Further, the base portion 41 is provided with four locking claws 45 protruding downward so as to respectively engage with the four mounting grooves 29 of the flange portion 21 of the motion sensor 2. Therefore, at the time of construction, the locking claw 45 is fitted into the mounting groove 29 of the flange portion 21.
The human sensor 2 can be temporarily fixed to the box cover 4 by engaging with the box cover 4
On the other hand, with the human sensor 2 temporarily fixed, the box screw 6 is tightened to attach the human sensor 2 to the switch box 1, and then the decorative plate 3 may be attached to the flange portion 21. Will be easier.

Therefore, in the heat ray type human sensor of the present embodiment, the pair of mounting holes for inserting the two box screws 6 screwed into the screw holes 12a of the pair of tongues 12 of the switch box 1 respectively. A sensor element for detecting heat rays emitted from a human body having a circular flange portion 21 formed with 27 at the lower end portion (front end portion) and a human body in a detection area set below (in front of) the body portion is provided. The human sensor 2 provided, the decorative plate 3 attached to the flange portion 21 so as to cover the lower surface side (front surface side) of the flange portion 21, the body of the human sensor 2 and the switch box 1 together with the decorative plate 3 are provided. Since it has the box cover 4 which is arranged so as to be exposed on the covering construction surface, the switch box 1 provided for wiring equipment can be used, and the appearance is improved. It is possible.

As described above, the box cover 4 has the base portion 41 held between the switch box 1 and the flange portion 21 of the motion sensor 2 and does not need to be fixed directly to the construction surface. The mechanical strength of the box cover 4 is less restricted than when the box cover 4 is directly fixed to the construction surface.

By the way, the peripheral wall 42 of the box cover 4 is formed with a plurality of releasable knockout portions 46 for forming wiring insertion openings 47 (see FIGS. 6 and 7), and if necessary, the knockout portions. By cutting out 46 with pliers or the like to form the wiring insertion port 47,
Wiring can be performed through the wiring insertion port 47, and unnecessary wiring insertion port 47 can be prevented from being generated, so that the appearance can be improved.

Here, the peripheral wall 42 of the box cover 4 has a plurality of wiring insertion openings 47 (47a, 47a).
b, 47c) corresponding to the knockout portion 46 is provided. That is, the knockout portion 46a in FIG.
By cutting off the wiring insertion opening 47 in FIG.
a is formed, and the knockout portion 46c in FIG. 6 is cut off to form the wiring insertion opening 47c in FIG. Further, the wiring insertion opening 47b in FIG. 6 is formed by cutting off a knockout portion (not shown). The thickness of the knockout portion 46 is formed thinner than the other parts of the peripheral wall 42, so that the work of cutting off the knockout portion 46 becomes easy. The wiring insertion port 47a among the above-mentioned three types of wiring insertion ports 47a to 47c is designed so that a cylindrical metal tube or a cylindrical resin tube can be inserted therein, and the wiring insertion ports 47b, 4b.
7c is designed so that a so-called metal molding can be inserted, and the wiring insertion opening 47c can insert a metal molding having a larger size than a metal molding that can be inserted into the wiring insertion opening 47b. Is designed. Therefore, by appropriately cutting off the knockout portion 46, it is possible to cope with various wiring forms. As an example, FIG. 8 shows an external perspective view of a usage pattern in which the knockout portion 46a is cut off to form the wiring insertion opening 47a and the metal tube 80 is inserted into the box cover 4.

By the way, when the heat ray type human sensor of this embodiment is installed outdoors, as shown in FIG. 9, at the upper end of the peripheral wall 42 of the box cover 4, the construction surface and the upper end of the peripheral wall 42 are provided. By providing an annular waterproof packing 5 sandwiched between and, it is possible to prevent water droplets or dust from entering the inside of the box cover 4 through the space between the box cover 4 and the construction surface.

[0038]

According to the first aspect of the present invention, a circular shape having a mounting hole for inserting a box screw to be screwed into a screw hole of a tongue provided on the opening side of the switch box exposed on the construction surface is formed. Of the human body sensor having a flange part at the front end and a sensor element for detecting heat rays radiated from the human body in the detection area set in front of the body and the front side of the flange part. A decorative plate mounted on the flange portion, and a box cover arranged so as to expose the body of the human sensor and the switch box together with the decorative plate to be exposed on the construction surface.
There is an effect that the switch box provided for the wiring equipment can be used and the appearance can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the box cover includes a base portion arranged such that a rear surface of the flange portion abuts on a front surface side, and the base portion has the container. Since the window hole into which the rear part of the body is inserted and the screw insertion hole into which the box screw is inserted are formed, the box cover has the base portion held between the switch box and the flange portion. Becomes
Since it is not necessary to directly fix the box cover to the construction surface, there is an effect that the mechanical strength of the box cover is less restricted than when the box cover is directly fixed to the construction surface.

According to a third aspect of the present invention, in the second aspect of the present invention, the flange portion is formed with an attaching portion for attaching and detaching an attaching tool used for fixing the motion sensor to the ceiling material. Since the portion has locking claws protruding from the mounting portion, the human sensor is temporarily attached to the box cover by engaging the locking claw with the mounting portion of the flange portion during construction. The human sensor can be fixed, and the human body sensor is temporarily fixed to the box cover, and the human body sensor is attached to the box cover by tightening the box screw, and then the decorative plate is attached to the flange portion. Since it is sufficient to attach the, there is an effect that the construction work becomes easy.

According to a fourth aspect of the present invention, in the second or third aspect of the invention, a guide portion for guiding the box screw to the screw hole of the tongue piece is provided on the rear surface of the base portion. Even if the base portion and the tongue piece are separated from each other, the box screw can be easily screwed into the screw hole of the tongue piece, which further facilitates the construction work.

According to a fifth aspect of the present invention, in the second to fourth aspects of the present invention, the base portion has a circular outer shape, and the base portion projects to the side opposite to the construction surface over the entire outer peripheral edge. Since the ribs are provided so as to project, the decorative plate is surrounded by the ribs of the base portion, and there is an effect that waterproofness can be enhanced.

According to a sixth aspect of the present invention, in the first to fifth aspects of the present invention, a peripheral wall of the box cover is provided with a releasable knockout portion for forming a wiring insertion port. Accordingly, by removing the knockout portion to form the wiring insertion opening, there is an effect that wiring can be performed through the wiring insertion opening,
Further, it is possible to prevent an unnecessary wiring insertion port from being generated, and it is possible to enhance the aesthetic appearance.

According to a seventh aspect of the invention, in the sixth aspect of the invention, the box cover is provided with a knockout portion corresponding to a plurality of types of wiring insertion openings,
There is an effect that it is possible to cope with various wiring forms.

According to an eighth aspect of the present invention, in the sixth or seventh aspect of the invention, the box cover is a synthetic resin molded product, and the knockout portion is formed thinner than other portions. Therefore, there is an effect that the work of cutting off the knockout portion becomes easy.

According to a ninth aspect of the present invention, in the first to eighth aspects of the present invention, an annular waterproof packing sandwiched between the construction surface and the rear end of the peripheral wall of the box cover is provided. Therefore, there is an effect that it is possible to prevent water droplets and dust from entering the inside of the box cover through the space between the box cover and the construction surface.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment.

FIG. 2 is a schematic perspective view of the above.

FIG. 3 is a cross-sectional view of an essential part of the above.

FIG. 4 shows a box cover used for the same as above, (a) is a front view, (b) is a bottom view, and (c) is a side view.

FIG. 5 is a perspective view of a main part of a box cover used in the above.

FIG. 6 is a perspective view of a box cover used in the above.

FIG. 7 is a perspective view of a box cover used in the above.

FIG. 8 is a schematic perspective view showing a usage pattern of the above.

FIG. 9 is a schematic perspective view of another configuration example of the above.

FIG. 10 is a schematic perspective view showing a usage pattern of a conventional example.

[Explanation of symbols]

1 switch box 2 Human sensor 3 makeup plates 4 box cover 5 waterproof packing 6 box screws 21 Flange 26 Light receiving lens 27 mounting holes 29 mounting groove 41 Base 41a window hole 41b screw insertion hole 42 Perimeter wall 43 Information 44 ribs 45 locking claw 46 Knockout section 47 Wiring insertion slot

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fukushima Politics             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F-term (reference) 5G055 BB11 BD20

Claims (9)

[Claims] 1. A circular flange portion having a mounting hole for inserting a box screw to be screwed into a screw hole of a tongue piece provided on an opening side of a switch box exposed on a construction surface is formed at a front end portion. A human sensor having a body and a sensor element for detecting heat rays radiated from a human body in a detection area set in front of the body, and a human body sensor mounted on the flange so as to cover the front side of the flange. A heat ray type human sensor device comprising a decorative plate and a box cover which is arranged so as to cover the body of the human sensor and the switch box together with the decorative plate so as to be exposed on the construction surface. 2. The box cover includes a base portion arranged such that a rear surface of the flange portion is in contact with a front surface side, and the base portion has a window hole into which the rear portion of the body is inserted and the box. The heat ray type human sensor device according to claim 1, wherein a screw insertion hole through which a screw is inserted is formed. 3. A mounting portion for mounting and dismounting a mounting tool used for fixing the motion sensor to a ceiling material is formed on the flange portion, and the base portion is a locking claw that engages with the mounting portion. The heat ray type human sensor device according to claim 2, wherein: 4. The hot wire type person according to claim 2, wherein a guide portion for guiding the box screw to the screw hole of the tongue is provided on a rear surface of the base portion so as to project therefrom. Sensation sensor device. 5. The base portion has a circular outer shape, and is provided with a rib protruding toward the opposite side to the construction surface over the entire circumference of the outer peripheral edge. The heat ray type human sensor device according to claim 4. 6. The hot wire type according to claim 1, wherein a releasable knockout portion forming a wiring insertion port is formed on a peripheral wall of the box cover. Human sensor device. 7. The heat ray type human sensor apparatus according to claim 6, wherein the box cover is provided with a knockout portion corresponding to a plurality of types of wiring insertion openings. 8. The box cover according to claim 6 or 7, wherein the box cover is a synthetic resin molded product, and a thickness of the knockout portion is thinner than other portions. Heat wire type human sensor device. 9. An annular waterproof packing sandwiched between the construction surface and a rear end portion of a peripheral wall of the box cover, according to any one of claims 1 to 8. The heat ray type human sensor device described.