JP2005037296A - Infrared sensor device and lighting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an infrared sensor device in which a user may vary a detection region easily. <P>SOLUTION: The infrared sensor device 3 is provided with pyroelectric infrared sensor 5 of a capable of detecting infrared rays generated from a human body, and the masking member 7 of infrared opaque material such as acrylic resin provided with the openable window hole 6 which is equipped in front of the infrared sensor 5. When the masking member 7 is in an open state, the front of the infrared sensor 5 is actually not covered, and when it is in a closed state, the detection region of the infrared sensor 5 is limited within the window hole 6. The masking member 7 is almost a cubic shape having a pair of small projections 10 in both the inside engaging with a pair of small holes 9 of the case 8 rotatably respectively. The second cases 11 and 12 substantially covering outside of the case 8 except the sensor 5 exposing to outside are provided, and in a gap between the case 8 and the 2nd cases 11 and 12, the masking member 7 is made essentially storable. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an infrared sensor device and a lighting fixture capable of detecting infrared rays emitted from a human body.

A lighting fixture that is turned on when a human body approaches is disclosed in Patent Document 1, and includes an infrared sensor device that can detect infrared rays emitted from the human body. If you want to change the detection range of the infrared sensor device narrowly, stick a seal made of a material that does not transmit infrared light so that it covers a part of the infrared sensor. I try to peel it off.
Japanese Patent Laid-Open No. 2002-98772

  However, such seals are shipped together with lighting fixtures and shipped so that the user can attach them when necessary, or stickers have been attached to the front of the infrared sensor in advance from the time of shipment of the lighting fixtures. It should be noted that even if the user peels off when necessary, there is a problem to be solved that the seal is small and the user is likely to lose it, and the handling is troublesome. In view of such a problem to be solved, an object of the present invention is to allow a user to easily change the detection range of an infrared sensor.

  In summary, the present invention includes an infrared sensor capable of detecting infrared rays emitted from a human body, and a masking member made of an infrared opaque material that is provided on the front surface of the infrared sensor so as to be openable and closable, and in which a window hole is formed. In the open state, the front surface of the infrared sensor is not substantially covered, and in the closed state, the detection range of the infrared sensor is limited within the window hole.

  According to the present invention, since the masking member made of an infrared opaque material having a window hole is provided on the front surface of the infrared sensor so as to be opened and closed, the detection range of the infrared sensor can be easily changed.

  Next, an embodiment of the present invention will be described. However, this is merely an exemplary embodiment adopted based on the present invention, and the present invention should not be limitedly interpreted based on matters specific to the embodiment. The technical scope of the present invention should be determined based on the matters shown in the claims of the claims and matters substantially equivalent to the matters.

  The illustrated embodiment shows an example of a lighting fixture equipped with an infrared sensor device. A main body 1 is attached to the lower surface of the ceiling, and a lamp 2 and an infrared sensor device 3 are provided on the lower surface of the main body 1. Further, a polyethylene resin globe 4 capable of transmitting infrared rays emitted from a human body is detachably attached to the lower surface of the main body 1 so as to cover the lamp 2 and the infrared sensor device 3.

  The infrared sensor device 3 includes a pyroelectric infrared sensor 5 capable of detecting infrared rays emitted from a human body, and an infrared opaque material such as an acrylic resin that is provided on the front surface of the infrared sensor 5 so as to be openable and closable. And a masking member 7. When the masking member 7 is open as shown in FIGS. 3 and 4, the front surface of the infrared sensor 5 is not substantially covered. When the masking member 7 is closed as shown in FIGS. Limited.

  More specifically, a substantially spherical case 8 with an infrared sensor 5 facing outside is provided, and the masking member 7 is rotatable in small holes 9 (see FIG. 6) on both sides of the case 8. It is made into the substantially spherical arc shape which has the small processus | protrusion 10 supported by a shaft on the inner surface of both ends. In addition, a vertically aligned second case 11 and 12 that substantially covers the outside of the case 8 except for the portion where the infrared sensor 5 faces the outside is provided, and the gap between the case 8 and the second case 11 and 12 is shown in FIG. Thus, the masking member 7 in the open state can be substantially stored.

  Explaining other configurations, support legs 13 and 13 are provided on both sides of the substantially hemispherical second case 11 and their upper ends are attached to the lower surface of the main body 1. After the case 8 is housed inside the second case 11, the locking claw 14 of the second case 12 having a relatively thin and large opening 12 a is inserted and locked into the hole 15 in the base portion of the support leg 13, thereby 11 and the second case 12 are configured integrally. Then, the elastic arm 16 in the vicinity of the upper surface of the second case 11 lightly presses the upper surface of the case 8, and the case 8 can be rotated in the second cases 11 and 12, but is mounted so as to maintain its position. . A lens 17 is attached to the front surface of the infrared sensor 5. Further, if the knob 18 protrudes from one end of the masking member 7 and the masking member 7 is colored, the distinction between opening and closing becomes easy to understand.

  1 and 2, the detection range of the infrared sensor 5 is limited and narrowed by the window hole 6 of the masking member 7, and when the person enters the hatched portion of the floor surface of FIG. Is detected and the lamp 2 is turned on. 3 and 4, the detection range of the infrared sensor 5 is widened because the infrared blocking by the masking member 7 is eliminated, and the infrared sensor 5 detects when a person enters the wide hatched portion of the floor in FIG. 3. Lamp 2 comes on. The masking member 7 can be easily moved by operating the knob 18 with a fingertip. Since the knob 18 is provided, the knob 18 can come into contact with the edge of the opening 12 a of the second case 12. Can be prevented from entering the second cases 12 and 11 and being unable to be taken out.

  According to the embodiment shown above, the masking member 7 made of an infrared opaque material in which the window hole 6 is formed is provided on the front surface of the infrared sensor 5 so as to be openable and closable. It can be changed and can easily cope with the change of the detection range depending on the use of the lighting fixture.

Side view when the detection range is narrowed (A) Cross section of the infrared sensor device, (B) Bottom view Side view with wide detection range (A) Cross section of the infrared sensor device, (B) Bottom view (A) Front view of the infrared sensor device, (B) Side view, (C) Bottom view Exploded front view of the infrared sensor device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Lamp 3 Infrared sensor apparatus 4 Globe 5 Infrared sensor 6 Window hole 7 Masking member 8 Case 9 Small hole 10 Small protrusion 11, 12 Second case 18 Knob

Claims (5)

  An infrared sensor capable of detecting infrared rays emitted from a human body, and a masking member made of an infrared opaque material having a window hole formed on the front surface of the infrared sensor so as to be openable and closable. An infrared sensor device in which a front surface is not substantially covered and a detection range of the infrared sensor is limited within the window hole in a closed state.   2. The substantially spherical case having an infrared sensor facing outside, according to claim 1, wherein the masking member has small protrusions on both side inner surfaces that are rotatably supported by small holes on both side surfaces of the case. Infrared sensor device with a spherical arc shape.   In Claim 2, the 2nd case which covers except the part which an infrared sensor faces outside outside a case is provided, and the masking member made into the open state can be substantially stored in the crevice between a case and the 2nd case. Infrared sensor device.   4. The infrared sensor device according to claim 1, wherein a knob protrudes from one end of the masking member.   The lighting fixture equipped with the infrared sensor apparatus in any one of Claims 1-4.

Images