JPH0517676Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a human body detection device that detects a human body using radiant energy generated from the human body.

[Prior art] To detect a human body using radiant energy generated from the human body, radiant energy from multiple monitoring zones is incident on a detection sensor through optical systems such as multiple mirrors and lenses, and then detected. The presence or absence of a human body is detected from this energy change.

[Problems to be solved by this invention] However, if it is desired to widen or narrow the monitoring zone depending on the monitoring location or purpose, it is generally impossible to change the optical system etc. because it is fixed.
Further, if the entrance window needs to be narrowed, it can be solved by attaching a blind seal to the entrance window, but this is complicated.

In view of the above points, the purpose of this invention is to provide a human body detection device that allows the monitoring zone to be easily changed.

[Means for solving the problem] This invention provides a cylindrical rotatable detection window so that a plurality of monitoring zones of the detection sensor are aligned in the axial direction, and a circular rotation at a predetermined axial position of the detection window. This human body detection device is configured such that an opaque material is provided along the circumference for a predetermined length, and a detection window is rotated with respect to a holding member to hide a predetermined monitoring zone, thereby changing the monitoring zone.

[Example] FIG. 1 is an explanatory diagram showing an example of this invention.

The human body detection device 1 has multiple monitoring zones Z1 and Z.
2, Z3, and in this example, there are three zones in the horizontal direction.

FIG. 2 shows the external appearance of the human body detection device 1, in which a cylindrical detection window 3 made of a resin filter or the like that transmits infrared rays is provided at the lower front of the device body 2.

Further, as shown in the cross-sectional explanatory diagram of FIG. 3, the detection sensor 4 has a plurality of monitoring zones Z1, Z2,
The electric circuit 6 receives the radiant energy from Z3.
The human body detection signal is amplified and discriminated, and the human body detection signal is outputted to the outside from the conductor 7.

The detection window 3 has the detection sensor 4 built in, and is provided so that a plurality of monitoring zones Z1, Z2, and Z3 are aligned in the axial direction. One end of the cylindrical detection window 3 is fitted into a groove 8a of a holding member 8 provided in the device body 2.
The rotor 1 is rotatably held in the rotor 1.

Then, in order to hide the predetermined monitoring zones Z1 and Z3, as shown in FIG. Opaque materials 9a and 9b that do not transmit infrared rays are formed in advance by printing, sealing, or the like.

That is, as shown in FIG. 4, the surface of the detection window 3 is rubbed with a finger and rotated with respect to the groove 8a of the holding member 8, and the part A where the opaque materials 9a and 9b are not attached is attached to the optical system of the detection sensor 4. 5, each of the three monitoring zones Z1, Z2, Z
It becomes possible to detect a human body in a wide range from 3 to 3.

In addition, by rubbing the detection window 3 with a finger or the like and rotating it, the detection sensor 4 detects the portion B where the opaque materials 9a and 9b are present.
When facing the direction of the monitoring zone corresponding to the optical system 5, there are two monitoring zones Z1 and Z3 as shown in
is hidden, resulting in a narrow warning range from only the surveillance zone Z2.

[Effects of the invention] As mentioned above, in this invention, the cylindrical detection window is provided with an opaque material and is rotatable.
By simply rubbing and rotating the detection window with your finger, you can easily change the monitoring zone, making it easy to adapt to various applications and uses.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are configuration explanatory diagrams showing one embodiment of this invention. 1...Human body detection device, 2...Device body, 3...
Detection window, 4...Detection sensor, 5...Optical system, 6...
...Electric circuit, 7... Conductor, 8... Holding member, 9
a, 9b... Opaque material.

Claims (1)

[Scope of utility model registration request] A detection sensor that detects radiant energy of a human body from a plurality of monitoring zones using an optical system, and a cylindrical detection window that incorporates the optical system and the detection sensor and is provided so that the monitoring zones by the optical system are aligned in the axial direction. a holding member that rotatably holds one end of the detection window; and a holding member that rotatably holds one end of the detection window, and a holding member that extends a predetermined length along the circumference of the cylinder at a predetermined axial position of the cylindrical detection window so as to hide a predetermined monitoring zone. What is claimed is: 1. A human body detection device comprising: an opaque material provided therein; and a monitoring zone can be changed by rotating a cylindrical detection window and making the opaque material correspond to an optical system.