JP2000065951A - Human body sensor and lighting equipment with human body sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a human body sensor and a lighting device with a human body sensor capable of adjusting a detection area by using a simple component configuration and adjusting the detection area without using a masking seal, a hood member or the like. thing. SOLUTION: A detection unit 2 forming a substantially cone-shaped detection area A having a vertex of a heat ray condensing lens 22 into which a heat ray radiated from a detection object is incident is provided on a sensor main body 3 having the detection unit 2. The center axis B of the detection area A by the heat ray focusing lens 22 is obliquely downward with respect to the mounting surface to be installed,
The sensor body 3 is provided so as to be rotatable about a rotation axis C which is parallel to the mounting surface and perpendicular to the ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a human body sensor and a lighting fixture with a human body sensor.

[0002]

2. Description of the Related Art Conventionally, as this kind of human body sensor and a lighting fixture with a human body sensor, Japanese Patent Laid-Open No. 8-31 shown in FIG.
No. 226, the other side of the sensor body 3 of the human body sensor E having the detection unit 2 having a heat ray condensing lens 22 on one side for receiving a heat ray radiated from the object to be detected. The sensor body 3 is attached to a lighting fixture (not shown) via a pipe F, and the sensor body 3 is provided at the lower end of the pipe F so as to be rotatable around a horizontal axis G, and the upper end of the pipe F is connected to a rotation axis C perpendicular to the ground. Lighting device D with a human body sensor provided below the lighting device so as to be rotatable around
There is.

Accordingly, the detection section 2 forming the detection area of a predetermined shape can be rotated in the left and right and up and down directions around a rotation axis C and a horizontal axis G perpendicular to the ground, and can be used in many patterns. Can accommodate space.

[0004]

However, in the above-mentioned prior art, a movable mechanism with two axes is configured to rotate both vertically and horizontally. Therefore,
There is a problem that a large number of components are required for the movable mechanism, and the component cost is increased. Further, when the detection area, which is an area on the ground surface of the detection area A, is limited to a desired space only, for example, the above-mentioned heat ray condensing apparatus has a plurality of divided lens areas on a cylindrical curved surface. Lens 22
In addition, it is necessary to adjust the detection area by attaching a masking seal to each lens area on the surface of the lens, and there is a problem that the appearance of the mask is deteriorated by the masking seal.

On the other hand, as a measure for setting only a limited desired space as a detection area, an area regulating hood member for restricting the spread of the detection area by the heat ray focusing lens is provided in front of the heat ray focusing lens. It has been proposed. However, also in this case, there is a problem that the number of parts is increased and the parts cost is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of being able to adjust a detection area with a simple component configuration, and to provide a masking seal,
An object of the present invention is to provide a human body sensor capable of adjusting a detection area without using a hood member or the like and a lighting device with a human body sensor.

[0007]

According to a first aspect of the present invention, there is provided a human body sensor having a substantially conical shape having a heat ray condensing lens for receiving a heat ray radiated from an object to be detected. The detection unit forming the detection area, the center axis of the detection area by the heat ray focusing lens is obliquely downward with respect to the mounting surface on which the sensor body having the detection unit is installed,
The sensor body is provided so as to be rotatable about a rotation axis parallel to the mounting surface and perpendicular to the ground.

Therefore, in this case, the sensor body
The center axis of the detection area by the heat ray focusing lens is obliquely downward with respect to the mounting surface on which the sensor body is installed, and is rotatable about a rotation axis parallel to the mounting surface and perpendicular to the ground. The substantially cone-shaped detection area of the detection unit provided as described above having the heat ray focusing lens at the top is rotated about the rotation axis to adjust the detection area.

According to a second aspect of the present invention, in the human body sensor according to the first aspect, the detecting unit according to the first aspect is configured such that the heat ray condensing lens and the heat ray detecting element for detecting the heat ray radiated from the object are integrally formed. It is made to rotate around the rotation axis.

Therefore, in this case, the heat ray condensing lens of the detecting portion and the heat ray detecting element for detecting the heat ray radiated from the object to be detected are integrally formed around the rotation axis parallel to the mounting surface and perpendicular to the ground. Rotated to form the sensing area.

According to a third aspect of the present invention, in the human body sensor according to the first or second aspect, the apex angle of the substantially cone-shaped detection area is set such that the angle of inclination of the central axis of the detection area of the heat ray focusing lens from the mounting surface. The size is more than twice as large.

Therefore, in this case, a substantially cone-shaped detection area having an apex angle of at least twice the angle of inclination of the detection area of the heat ray focusing lens from the mounting surface of the central axis to the sensor body is provided. The detection area is adjusted by being rotated about an axis of rotation parallel to the mounting surface.

According to a fourth aspect of the present invention, there is provided a lighting apparatus with a human body sensor according to any one of the first to third aspects, wherein the human body sensor according to any one of the first to third aspects is provided below the illumination lamp, and the human body sensor detects the human body when detecting the human body. It's like lighting up.

Therefore, in this case, the illumination lamp is turned on when the human body sensor provided below the illumination lamp of the illumination device with the human body sensor detects the human body.

[0015]

1 to 4 show an embodiment corresponding to all of claims 1 to 4 of the present invention, and FIG.
BRIEF DESCRIPTION OF THE DRAWINGS The schematic structure of the human body sensor of one Embodiment of this invention is shown, (a) is a front view, (b) is a side view. FIG.
It is a top view which shows the detection area by a human body sensor. FIG. 3 is an explanatory diagram of the detection area adjustment of the human body sensor.
FIG. 4 is a schematic configuration diagram of an embodiment of a lighting apparatus with a human body sensor.

The human body sensor 1 according to this embodiment includes a heat ray focusing lens 2 for receiving a heat ray radiated from a detected object.
The detection unit 2 forming the substantially cone-shaped detection area A having the vertex 2 as a vertex is attached to the mounting surface of the sensor body 3 having the detection unit 2 on the mounting surface of the heat ray focusing lens 22. The sensor body 3 is provided so that the central axis B is directed obliquely downward and is rotatable about a rotation axis C that is parallel to the mounting surface and perpendicular to the ground.

Further, in the human body sensor 1 of the embodiment, the detecting unit 2 is configured such that the heat ray collecting lens 22 and the heat ray detecting element for detecting the heat ray radiated from the object to be detected are integrally rotated. In some cases, it is rotated about the axis C.
In the human body sensor 1 according to the embodiment, the apex angle θ1 of the substantially conical detection area A is at least twice the inclination angle θ2 of the center area of the detection area of the heat ray focusing lens from the mounting surface. They are also large. In the lighting fixture 4 with a human body sensor according to the embodiment, the human body sensor 1 is provided below the illumination lamp 7 and the illumination lamp 7 is turned on when the human body sensor 1 detects a human body.

More specifically, the human body sensor 1 allows a human body to enter a heat ray detecting element for detecting heat rays emitted from a human body as a detection object through a heat ray focusing lens which is a heat ray focusing means. The detection unit 2 includes a detection unit 2 and a sensor main body 3 having a control unit that receives a human body detection signal output from the detection unit 2 and controls lighting of an illumination lamp or the like.

The detecting unit 2 is a pyroelectric element 2 which is a heat ray detecting element for detecting a heat ray radiated from the human body.
1 and a heat ray detector (not shown) inside the pyroelectric element 21
A heat ray focusing lens 22 for focusing light toward the
And a signal processing circuit 23 for electrically amplifying a weak human body detection signal output from 1 and performing signal processing. All of these signal processing circuits 23 are made of synthetic resin having a cylindrical support portion 25 at the top. Is disposed in the housing 24.

As shown in FIG. 1, the heat ray condensing lens 22 forms a substantially conical detection area A having the heat ray condensing lens 22 as an apex together with the pyroelectric element 21. This is a thin optical system made of a polyethylene resin material capable of transmitting light, and has a plurality of Fresnel lens surfaces disposed at predetermined solid angle intervals on a hemispherical dome-shaped inner surface.
The heat ray focusing lens 22 includes a heat ray focusing lens 22.
To form the central axis B of the detection area A obliquely downward, the heat ray detecting portion inside the pyroelectric element 21 is located substantially at the center of the dome-shaped hemisphere, and the mounting surface of the central axis B of the detection area A The inclination angle θ2 from a certain wall surface W, that is, the center of the arrangement of a plurality of Fresnel lens surfaces and the pyroelectric element 21
The pyroelectric element 21 is integrated with the pyroelectric element 21 so that the normal line connecting the heat ray detector to the wall surface W is obliquely downward at an angle θ2 formed with the wall surface W.

The above-mentioned substantially conical detection area A has an apex angle θ1 of a solid angle on a hemispherical dome of a plurality of Fresnel lenses of the heat ray focusing lens 22 and a heat ray inside the pyroelectric element 21. Determined by the positional relationship with the detector,
In this case, the vertex angle θ1 of the detection area A is set to be at least twice as large as the inclination angle θ2 of the center axis B of the detection area A of the heat ray focusing lens 22 from the wall surface W. Since the pyroelectric element 21 is formed by a dual-type pyroelectric element having two well-known heat ray detecting portions, the substantially cone-shaped detection area A is formed as shown in FIG. , A plurality of detection areas a, a,... Change in size and form detection area patterns arranged at predetermined intervals at regular intervals on the ground.

The signal processing circuit 23 is connected to the housing 2
4, the housing 24 is electrically connected to the inside of the sensor main body 3 by a flexible lead wire so that the housing 24 can be freely rotated with respect to the sensor main body 3. ing.

In this case, the sensor main body 3 has a control circuit 31 for inputting a human body detection signal output from the detection section 2 and controlling lighting of an illumination lamp or the like inside a main body housing 32 made of synthetic resin. Is formed. The main body housing 32 is formed to have a rear mounting portion 32 a that comes into contact with a mounting surface such as a wall surface W, and a lower support hole 32 b that supports the support portion 25 of the detection unit 2.

As shown in FIG. 1, the human body sensor 1 having the above-described configuration includes the detecting portion 2 in the support hole 32 b of the sensor main body 3.
Are rotatably mounted on the support hole 32b and the support portion 2.
5, the rotation axis C parallel to the wall surface W and perpendicular to the ground is determined. Then, the heat ray focusing lens 22 of the detection unit 2 and the pyroelectric element 21 radiated from the detected object are integrally rotated about the rotation axis C to form a detection area A on the ground surface. , The size of the detection area pattern by the detection areas a, a,.

That is, as shown in FIG. 1, when the heat ray collecting lens 22 is positioned on the front side, the detection area A
As shown in FIG. 2, the detection area pattern on the ground surface has a shape in which a plurality of detection areas a, a,. On the other hand, the wall surface W of the central axis B of the detection area A of the heat ray focusing lens 22
A substantially conical detection area A having an apex angle θ1 that is at least twice as large as the inclination angle θ2 from the wall surface W of the sensor body 3
The detection area A is adjusted by being rotated about a rotation axis C parallel to the detection area A. For example, as shown in FIG.
.. Have a shape in which a plurality of detection areas a, a,... Greatly spread toward the front side of the human body sensor 1 and, as shown in FIG. When the light lens 22 is positioned on the back side, the detection area pattern on the ground surface by the detection area A has a shape in which the plurality of detection areas a, a,... Are limited only to the periphery of the human body sensor 1.

For example, as shown in FIG. 4, the above-mentioned human body sensor 1 can be provided with the human body sensor 1 below the illumination lamp 7 to constitute the lighting fixture 4 with the human body sensor. In this case, a support piece 5 for supporting the illumination lamp 7 is protruded above the front surface of the sensor body 3 of the human body sensor 1, and a translucent glove 6 for protecting the illumination lamp 7 is provided at the tip of the support piece. Further, the control circuit 31 provided in the sensor main body 3 is provided with a brightness detecting means so as to turn on the illumination lamp 7 when a human body is detected by the detecting unit 2 of the human body sensor 1 when it becomes dark. I have.

Therefore, the lighting fixture 4 with the human body sensor
Of the human body sensor 1 provided below the lighting lamp 7 of the lighting fixture 4 with the human body sensor, the mounting portion 32a on the rear side of the main body housing 32 of the sensor main body 3 is installed in contact with the mounting surface such as the wall surface W. The illumination lamp 7 is turned on when a human body is detected. Therefore, the outline of the correspondence between the detection area A and the illumination lamp 7 can be understood at a glance on the external appearance, and the usability is improved.

Therefore, the human body sensor 1 described above
According to the above, the center axis B of the detection area A of the heat ray condensing lens 22 is directed obliquely downward with respect to the wall surface W which is the mounting surface on which the sensor main body 3 is installed, and the mounting surface The detection area 2 of the detection unit 2 provided so as to be rotatable about a rotation axis C parallel to the ground and perpendicular to the ground has a substantially cone-shaped detection area A having the heat ray focusing lens 22 as an apex. Since the detection area is adjusted by rotating about C, the detection area can be adjusted with a simple component configuration, and the detection area can be adjusted without using a masking seal, a hood member, and the like.

The heat ray collecting lens 22 of the detecting section 2 and the pyroelectric element 21 for detecting the heat ray radiated from the object are integrally formed around a rotation axis C parallel to the wall surface W and perpendicular to the ground. Is rotated to form a detection area, so that the detection area is determined while maintaining a constant relationship between the heat ray collecting lens 22 and the pyroelectric element 21 that form the detection area. Configuration. In addition, the substantially cone-shaped detection area A having a vertical angle that is at least twice as large as the angle of inclination of the center axis B of the detection area A of the heat ray focusing lens 22 from the wall surface W is formed on the wall surface of the sensor body 3. Since the detection area is adjusted by being rotated about a rotation axis parallel to W, for example, the heat ray focusing lens 2
2, the size of the detection area pattern can be limited to only the periphery of the human body sensor 1 by positioning the detection area 2 on the back side, so that the detection area can be adjusted in a larger variable range.

The illumination lamp 7 is turned on when the human body sensor 1 provided below the illumination lamp 7 of the illumination device 4 with the human body sensor detects the human body, so that the outline of the correspondence between the detection area A and the illumination lamp 7 is outlined. At a glance on the exterior,
Thus, the usability is improved.

[0031]

As described above, in the human body sensor according to the first aspect of the present invention, the center axis of the detection area by the heat ray focusing lens is mounted on the sensor body with respect to the mounting surface on which the sensor body is installed. An approximately cone-shaped detection area of a detection unit provided obliquely downward and rotatable about a rotation axis parallel to the mounting surface and perpendicular to the ground, the vertex of which is the lens for condensing heat rays. However, since the detection area is adjusted by being rotated about the rotation axis, the detection area can be adjusted with a simple component configuration, and a masking seal,
The detection area can be adjusted without using a hood member or the like.

The human body sensor according to the second aspect has the same effects as those of the first aspect, except that the heat ray collecting lens of the detection section and the heat ray detecting element for detecting the heat ray radiated from the object to be detected are integrated. In addition, since the detection area is formed by rotating about a rotation axis parallel to the mounting surface and perpendicular to the ground, detection is performed while maintaining a constant relationship between the heat ray collection lens forming the detection area and the heat ray detection element. The area is determined, so that the detection unit can have a simple configuration.

According to a third aspect of the present invention, in addition to the effects of the first or second aspect, the human body sensor according to the first or second aspect has a size that is at least twice as large as the inclination angle of the central area of the detection area of the heat ray focusing lens from the mounting surface. The detection area is adjusted by rotating the substantially cone-shaped detection area with the apex angle around the rotation axis parallel to the mounting surface of the sensor body. The detection area pattern can be positioned so that the size of the detection area pattern is limited only to the periphery of the human body sensor, so that the detection area can be adjusted with a larger variable range.

According to a fourth aspect of the present invention, there is provided a lighting device with a human body sensor provided below the lighting lamp of the lighting device with the human body sensor in addition to the effects of the first aspect. Since the illumination lamp is turned on when the sensor detects the human body, the outline of the correspondence between the detection area and the illumination lamp can be understood at a glance on the external appearance, and the usability is improved.

[Brief description of the drawings]

FIG. 1 shows a schematic configuration of a human body sensor according to an embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 2 is a plan view showing a detection area by a human body sensor.

FIG. 3 is an explanatory diagram of adjustment of a detection area of the human body sensor.

FIG. 4 is a schematic configuration diagram of an embodiment of a lighting device with a human body sensor.

FIG. 5 is a side view showing a conventional human body sensor of the present invention.

[Description of Signs] 1 Human body sensor 2 Detecting unit 22 Heat ray condensing lens 3 Sensor body 4 Lighting fixture with human body sensor 7 Illumination lamp A Detection area θ1 Apex angle θ2 Tilt angle B Central axis C Rotation axis W Mounting surface (wall surface)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeki Okushiro 1048 Kazuma Kadoma, Kadoma City, Osaka Prefecture F-term in Matsushita Electric Works, Ltd. (reference) 3K073 AA13 AA86 AB01 AB04 BA25 BA30 CA05 CG21 CJ11 CK01 CK02

Claims (4)

[Claims] 1. A mounting part for mounting a sensor body having a substantially cone-shaped detection area having a vertex at a vertex of a heat ray collecting lens into which a heat ray radiated from an object to be detected is installed. The central axis of the detection area of the heat ray focusing lens is obliquely downward with respect to the surface, and is provided on the sensor main body so as to be rotatable about a rotation axis parallel to the mounting surface and perpendicular to the ground. Human body sensor. 2. The detecting section, wherein the heat ray collecting lens and a heat ray detecting element for detecting a heat ray radiated from an object to be detected are integrally rotated about the rotation axis. The human body sensor according to claim 1, wherein 3. The method according to claim 1, wherein the apex angle of the substantially conical detection area is at least twice as large as the angle of inclination of the central axis of the detection area of the heat ray focusing lens from the mounting surface. Or the human body sensor according to 2. 4. The human body according to claim 1, wherein the human body sensor is provided below the illumination lamp, and the illumination lamp is turned on when the human body sensor detects the human body. Lighting equipment with sensor.