JP3962190B2 - lighting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lighting fixture.
[0002]
[Prior art]
Conventionally, various lighting fixtures such as a ceiling-mounted lighting fixture, a ceiling-suspended lighting fixture, and a lighting fixture that is installed using a wiring fixture (for example, a hook ceiling) already installed on a construction surface have been provided. Yes. In addition, a light source (lighting load) is automatically turned on / off based on the detection output of the sensor by adding a sensor such as a heat ray sensor or a brightness sensor to this type of lighting fixture. .
[0003]
By the way, in this kind of lighting fixture, depending on the shape of the fixture main body, the position of the sensor in the fixture main body, etc., it is desired to be able to adjust the orientation of the fixture main body for the purpose of adjusting the appearance and the detection range of the sensor. Yes. For example, a luminaire that uses a heat ray sensor, such as a pyroelectric element, to detect the person entering and exiting the toilet and automatically turns on and off the light source (lighting load) detects slight movements of the person. It is desired to be able to adjust the detection range of the heat ray sensor so that it can be performed.
[0004]
As an example of this type of lighting fixture, there is a configuration shown in FIG. The lighting fixture having the configuration shown in FIG. 12 includes a fixture body 3 ′ having a mounting base 30 ′ directly attached to a construction surface 80 such as a ceiling surface using a mounting screw 83 made of wood screws, and a lamp 7 made of an incandescent lamp. A lamp socket 6 'which is disposed on the lower surface side of the mounting base 30' and supports the cap 7a of the lamp 7 and has a helical thread 6a formed on the outer peripheral surface, and a screw in the lamp socket 6 '. A cylindrical shade 60 ′ having an open lower surface attached to the attachment base 30 ′ using the nut-shaped holder 4 to be fitted is provided. Note that an insertion hole 64 through which the lamp socket 6 ′ is inserted is formed on the upper surface of the shade 60 ′, and the holder 60 is screwed into the lamp socket 6 ′ inserted through the insertion hole 64 so that the shade 60 ′ is screwed. It can be attached to the attachment base 30 '.
[0005]
12 includes a lighting circuit (not shown) for lighting the lamp 7, a switch element (not shown) inserted in a power feeding path to the lamp 7 in the lighting circuit, and a detection area. A heat ray sensor (not shown) including a pyroelectric element for detecting the presence or absence of a person, a brightness sensor (not shown) for detecting ambient brightness, and a switch element based on the outputs of the heat ray sensor and the brightness sensor. A rectangular parallelepiped circuit storage unit 31 ′ in which a circuit board on which components such as a signal processing unit (not shown) to be controlled are mounted is stored. Here, a lens 9 made of a bowl-shaped Fresnel lens is disposed on the detection surface side of the heat ray sensor and the brightness sensor, and the lens 9 protrudes from the lower surface of the circuit housing portion 31 ′. By the way, the circuit housing portion 31 ′ is housed in a bottomed rectangular tube-shaped cover 70 formed integrally with the shade 60 ′, and the lens 9 passes through an opening window 71 drilled in the bottom wall of the cover 70. It is supposed to be exposed.
[0006]
The lighting fixture having the configuration shown in FIG. 12 is connected to an AC power source composed of a commercial power source, and is fed through a power line 81 drawn out from a power hole 80a that is wired in advance on the back of the ceiling and drilled in the construction surface 80. The
[0007]
On the other hand, the thing of the structure shown in FIG. 13 is also known as a lighting fixture by which a power supply is supplied using the wiring fixture fixed to construction surfaces, such as a ceiling surface. It should be noted that the same components as those shown in FIG.
[0008]
The lighting fixture having the configuration shown in FIG. 13 is attached to a hooking ceiling 1 as a wiring fixture fixed to a construction surface such as a ceiling surface using a connector 2 ′. Here, the connector 2 ′ has a pair of hooking blades 29 whose tip portions are L-shaped. FIG. 13 shows the hooking ceiling 1 in which the body 11 is formed in a rectangular parallelepiped shape. However, as the hooking ceiling 1, there is a hooking body 1 in which the body 11 is formed in a bottomed cylindrical shape as shown in FIG. .
[0009]
A pair of hooking blade insertion holes 19 into which the hooking blades 29 are inserted are opened in the peripheral portion of the bottom wall of the body 11 of the hooking ceiling 1. Here, both hooking blade insertion openings 19 are formed on one arc centering on the center of the bottom wall of the body 11 and are formed in an arc shape.
[0010]
On the other hand, the connector 2 ′ includes a rectangular parallelepiped body 21 ′ whose upper surface is opened. To attach the hook 2 to the hooking ceiling 1, the hooking blades 29 are respectively wide portions 19 a (see FIG. 14), the body 21 ′ is rotated after being inserted into the hooking blade insertion slot 19, and the tip of the hooking blade 29 is overlapped with the peripheral edge of the narrow portion 19 b (see FIG. 14) of the hooking blade insertion hole 19. Thereby, the front-end | tip part of the hooking plug blade 29 is hold | maintained at the hooking blade receiving part (not shown) provided in the body 11 of the hooking ceiling 1. FIG.
[0011]
In addition, the mounting base 30 ″ of the fixture body 3 ″ of the lighting fixture having the configuration shown in FIG. 13 holds a cylindrical portion 21c that projects continuously and integrally from the bottom wall of the body 21 of the connector 2 ′ on the lower surface side. And a main body side connector 43 to which the connector side connector 42 at the tip of the connection line 41 led out from the connector 2 ′ is coupled. A character-shaped mounting base 38 is attached. A lamp socket 6 ′ is attached to the mounting base 38.
[0012]
[Problems to be solved by the invention]
By the way, the lighting fixture as described above cannot rotate the fixture main bodies 3 ′, 3 ″ in a plane parallel to the construction surface after the illumination main bodies 3 ′, 3 ″ are attached (that is, the fixture main body). 3 ′, 3 ″ could not be changed), and there was a problem that the detection range of the heat ray sensor could not be adjusted. Also, depending on the position of the circuit housing portion 31 ′, the appearance could deteriorate. .
[0013]
This invention is made | formed in view of the said reason, The objective is to provide the lighting fixture which can adjust the direction of an instrument main body.
[0014]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the invention of claim 1 is a device main body, a power supply wiring device fixed to the construction surface, and a connector used for mechanical and electrical connection between the device main body and a connection. A fitting hole in which a fitting hole into which a part of the vessel body is fitted is formed and fixed to the construction surface side of the tool body , a light source fed through at least the wiring tool and the connector, and the light source A switch element inserted in the power supply path, a heat ray sensor that can obtain an output according to the presence or absence of a person in the detection area, and a signal processing unit that controls the switch element based on the detection output of the heat ray sensor , The connector has a cylindrical container, and a hook-shaped piece is formed at a predetermined portion on the construction surface side in the axial direction of the container, and the instrument body is a cylinder in which the connector body is rotatably held. and Jo of the mounting cylinder, the exposure hole for exposing the sensing surface of the hot wire sensor A circuit housing portion to be disposed outside the site of the outer peripheral surface of the mounting cylinder has a section are formed integrally, place the hot wire sensor in the circuit housing portion in a state where the detection surface but facing the exposure hole, the mounting cylinder A hook-shaped piece is sandwiched between the upper edge and the peripheral part of the fitting hole of the fixture mounting plate, and the connector mechanically connected to the fixture body is fixed to the construction surface. Even after attaching to the connected wiring device, the device body can be rotated in a plane parallel to the construction surface using the device body of the connector as a rotation axis. The orientation of the instrument body can be adjusted without preparing a separate member. Moreover, the detection range of a heat ray sensor can be adjusted by rotating the instrument body in a plane parallel to the construction surface.
[0015]
According to a second aspect of the present invention, in the first aspect of the invention, an instrument side rib parallel to the axial direction of the instrument body is projected on the outer peripheral surface of the connector body, and the instrument side rib is provided on the inner peripheral surface of the mounting cylinder. Since the concavo-convex part that engages is formed, in order to rotate the instrument body, torque is required to disengage the body side rib from the concavo-convex part. It can prevent turning.
[0016]
According to a third aspect of the present invention, in the second aspect of the present invention, there are provided the above-mentioned eight body side ribs and two above-mentioned concavo-convex portions, and each of the body side ribs protrudes at equal intervals in the circumferential direction of the container body Each concavo-convex portion includes a plurality of body-side ribs that protrude in parallel to the axial direction of the mounting cylinder and are adjacent to each other in the circumferential direction of the mounting cylinder, and each concavo-convex section has both ends in the circumferential direction of the mounting cylinder and the central axis of the mounting cylinder. The central angle of the fan shape surrounded by is set to 45 ° and is formed at a position sandwiching the central axis of the mounting cylinder, so it is necessary when rotating the instrument body regardless of the position of the mounting cylinder and the body Torque can be made substantially constant.
[0018]
A fourth aspect of the present invention is the invention according to any one of the first to third aspects, wherein the cylindrical shade attached to the instrument body and a detection area adjusting lens disposed so as to cover the heat ray sensor on the detection surface side of the heat ray sensor. Since the lens is located above the lower edge of the shade, the lens is less noticeable and looks good.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the lighting fixture of this embodiment is demonstrated, referring FIG. 1 thru | or FIG.
[0020]
The lighting apparatus of this embodiment includes a connector 2 used for mechanical and electrical connection between a hook ceiling 1 (see FIG. 1B) fixed to a construction surface such as a ceiling surface and the apparatus main body 3. It comprises an appliance body 3 having an attachment base 30 to which the connector 2 is attached using the appliance attachment plate 5, a lamp socket 6 coupled to the connector 2, and an incandescent bulb in which the base 7 a is held in the lamp socket 6. The lamp 7 and a shade 60 detachably attached to the lower surface side of the attachment base 30 are provided. 1B includes a bottomed cylindrical body 11 whose upper surface (the upper surface in FIG. 1B) is open, and the upper end surface of the body 11 is brought into contact with the construction surface. It is fixed using a wood screw 84.
[0021]
The configuration of the hook ceiling 1 shown in FIG. 1 (b) is substantially the same as the conventional configuration shown in FIG. 14, and a hook plug blade 29 (FIG. 1 (a) and FIG. A pair of hooking blade insertion holes 19 (see FIG. 14) into which a reference is inserted is opened. Here, both hooking blade insertion openings 19 are formed on one arc centering on the center of the bottom wall of the body 11 and are formed in an arc shape.
[0022]
On the other hand, as shown in FIG. 4 and FIG. 5, the connector 2 has a pair of hooking blades 29 whose tip ends are L-shaped and protrude from the upper surface of the container body 20. Connected. The container 20 of the connector 2 is made of a synthetic resin (for example, polyethylene terephthalate = PET), and as shown in FIGS. 4 to 8, the cylindrical body 21 whose upper surface is open and the opening of the body 21 are closed. A pair of hooking blades 29 and one lock claw 24 protrude from the upper surface of the cover 22. Here, the hooking blade 29 protrudes upward at a position sandwiching the center of the cover 22 on one straight line passing through the center of the cover 22 in the peripheral portion of the cover 22. In addition, the lock claw 24 protrudes from a position shifted along the circumferential direction of the cover 22 from the protruding position of the one hooking blade 29 on the upper surface of the cover 22, and the container 20 is coupled to the hooking ceiling 1. Thus, the one hook hook blade 29 is inserted into the wide portion 19a of the hook stopper blade insertion port 19.
[0023]
Here, the lock claw 24 advances and retreats from the upper surface of the cover 22 in conjunction with the operation of the lock release button 25 provided on the side of the cylindrical mounting base 21b that projects continuously and integrally from the bottom wall of the body 21. In the state where the container body 20 is coupled to the hook ceiling 1, the lock claw 24 is retracted from the wide portion 19 a of the hook plug insertion port 19 by pressing the lock release button 25 and pressed. When the operation is stopped, the lock claw 24 advances from the wide portion 19 a of the hooking blade insertion port 19 into the body 11. The lock claw 24 moves downward so that the amount of protrusion from the upper surface of the cover 22 is reduced by the pressing force from above, and returns to the original position when the pressing force is released.
[0024]
In order to attach the connector 2 to the hooking ceiling 1, the hooking blade 29 having an L-shaped tip is inserted into the hooking blade insertion port 19 from the wide portion 19 a of the hooking blade insertion port 19, and the lock claw 24. After the front end is pressed against the body 11 of the hooking ceiling 1, the container body 20 is rotated, and the front end of the hooking plug blade 29 is overlapped with the periphery of the narrow portion 19 b of the hooking plug blade insertion port 19. The front end portion is held by a hooking blade receiving portion (not shown) provided in the body 11 of the hooking ceiling 1. The locking claw 24 is released from the pressing force applied by the body 11 during the rotation, and the leading end enters the wide portion 19 a of the hooking blade insertion port 19.
[0025]
The connector 2 has a cylindrical lamp socket 6 coupled to the lower end of the mounting base 21 b and is attached to the mounting base 30 of the instrument body 3.
[0026]
The instrument body 3 is made of synthetic resin (for example, ABS resin), and the mounting base 30 is formed with a cylindrical mounting cylinder 32 on which the device body 20 of the connector 2 is rotatably held. An inner peripheral surface of the mounting cylinder 32 and an outer peripheral surface of the body 21 of the container body 20 face each other, and a lower surface of the hook-shaped piece 21a that protrudes from the upper end portion of the peripheral wall of the body 21 of the connector 2 over substantially the entire circumference. Positioning is performed by contacting the upper edge of the mounting cylinder 32. Further, the fixture mounting plate 5 made of a thin metal plate having a fitting hole 51 into which the cover 22 of the vessel body 20 is fitted is fixed to the upper surface side of the fixture body 3 using a fixing screw 53. The
[0027]
The instrument mounting plate 5 is formed by bending an L-shaped mounting piece 52 having a through-hole through which the fixing screw 53 is inserted, and is attached by inserting the fixing screw 53 into the insertion hole of the mounting piece 52. It is fixed to the instrument body 3 by being screwed into the screw hole of the boss 36 of the base 30. Here, the connector 2 is mounted in such a manner that the hook-shaped piece 21a is sandwiched between the periphery of the fitting hole 51 of the device mounting plate 5 and the upper edge of the mounting tube 32 (that is, the mounting base 30). Attached to the base 30.
[0028]
Moreover, the lighting fixture of this embodiment detects the presence or absence of the lighting circuit (not shown) which lights the lamp | ramp 7, the switch element (not shown) inserted in the electric power feeding path to the lamp | ramp 7, and the person in a detection area Based on the outputs of the heat ray sensor 8 (see FIG. 1B), a brightness sensor (not shown) made of CdS for detecting ambient brightness, and the output of the heat ray sensor 8 and the brightness sensor. A signal processing unit (not shown) for controlling the switch element is provided. Here, when the detection output by the heat ray sensor 8 is obtained in a state where the brightness detected by the brightness sensor is equal to or less than the specified value, the signal processing unit turns on the lamp 7 and the detection output by the heat ray sensor 8 cannot be obtained. The lamp 7 is turned off after a predetermined time (for example, 30 seconds). This predetermined time (hereinafter referred to as the lighting holding time) can be changed by adjusting the resistance value of the first variable resistor VR1 (see FIG. 1B). On the other hand, when the brightness detected by the brightness sensor exceeds a specified value, the switch element is kept off even if a detection output from the heat ray sensor 8 is present. This specified value can be changed by adjusting the resistance value of a second variable resistor (not shown). Therefore, when the surroundings are bright and it is not necessary to turn on the lamp 7, the lamp 7 can be turned off regardless of the detection result of the heat ray sensor 8, and wasteful power consumption can be reduced.
[0029]
A first circuit board 45 on which components such as a lighting circuit, a switch element, and a signal processing unit are mounted, a human sensor 8, a brightness sensor, a first variable resistor VR1, a second variable resistor, and the like. The mounted second circuit board 46 is housed in the circuit housing portion 31 of the instrument body 3. The circuit storage portion 31 has a bottomed cylindrical shape with an upper surface opened, and is formed integrally with the mounting base 30. The upper surface of the circuit housing part 31 is closed by a part of the above-described instrument mounting plate 5. Here, the first circuit board 45 is disposed in the circuit housing portion 31 so that the thickness direction thereof coincides with the left-right direction in FIG. The second circuit board 46 is disposed in the circuit housing 31 so that the thickness direction thereof coincides with the vertical direction in FIG. 1B and the detection surfaces of the heat ray sensor 8 and the brightness sensor face downward. Further, on the lower surface side of the second circuit board 46, a bowl-shaped lens 9 that covers both the heat ray sensor 8 and the brightness sensor is disposed. The lens 9 is a Fresnel lens formed of a material such as high-density polyethylene that has translucency and is easy to transmit heat rays, and has a plurality of focal points, and the detection region of the heat ray sensor 8 is a plurality of regions. It is supposed to be divided into. Therefore, slight movement of a person can be detected even in a space with little movement of the person such as a toilet. A in FIG. 1B indicates a detection area of the heat ray sensor 8.
[0030]
Part of the lens 9, the knob 17 of the first variable resistor VR1, and the knob 18 of the second variable resistor are exposed through the exposure holes 31a, 77, and 78 drilled in the bottom wall of the circuit housing portion 31, respectively. is doing. Here, the circuit housing portion 31 is formed such that the lower surface thereof is positioned above the lower end edge of the shade 60 in the vertical direction, and the lower end of each knob 17, 18 and the lower end of the lens 9 are both the shade 60. It is located above the lower end edge. Therefore, the lens 9 and the knobs 17 and 18 are less noticeable when the lighting fixture is viewed from the diagonally lower right side of FIG. The technical idea that the lower ends of the knobs 17 and 18 and the lower end of the lens 9 are positioned higher than the lower end edge of the shade 60 is as follows. As shown in FIG. Of course, it is applicable also to the lighting fixture fixed to a construction surface. In FIG. 11, the same components as those in FIG. 1 are denoted by the same reference numerals, and an arrow C indicated by a one-dot chain line in FIG. 11 represents the eyes of a person who has entered the toilet, and is indicated by a solid line. An arrow D indicates the light of the lamp 7.
[0031]
The shade 60 is formed in a cylindrical shape having an open bottom surface. In order to attach the shade 60 to the instrument body 3, each of the three L-shaped latching claws 34 projecting from the lower end surface of the peripheral portion of the mounting base 30 of the instrument body 3 has a wide width of the shade latching claw insertion opening 61. 2, the shade 61 is rotated in the direction of arrow B in FIG. 2, and the tip of the locking claw 34 is engaged with the periphery of the narrow portion 61 b of the locking claw insertion port 61. It is supposed to stop.
[0032]
By the way, on the outer peripheral surface of the body 21 of the connector 2, eight body-side ribs 23 that make the distance from the inner peripheral surface of the mounting cylinder 32 of the mounting base 30 smaller than other portions are circumferential directions of the body 21. Are spaced apart at equal intervals. Here, each body side rib 23 is formed along the axial direction (vertical direction) of the body 21. In short, as shown in FIG. 8, the central angle of the sector surrounded by the two adjacent vessel-side ribs 23 and the central axis of the vessel 20 is 45 °.
[0033]
On the other hand, the inner peripheral surface of the mounting cylinder 32 of the mounting base 30 is composed of a plurality of main body side ribs 33a that make the distance from the outer peripheral surface of the body 21 of the connector 2 smaller than other parts, and the adjacent main body side. Two concavo-convex portions 33 with which the body side rib 23 of the connector 2 is engaged are formed between the ribs 33 a at a position sandwiching the central axis of the mounting cylinder 32. The plurality of main body side ribs 33 a constituting each of the concave and convex portions 33 are formed adjacent to each other in the circumferential direction of the mounting cylinder 32. Here, each main body side rib 33 a is formed along the axial direction (vertical direction) of the mounting cylinder 32. Further, as shown in FIG. 9, the central angle of the sector shape surrounded by both ends of the concavo-convex portion 33 in the circumferential direction of the mounting cylinder 32 and the central axis of the mounting cylinder 32 is 45 °.
[0034]
Thus, in this embodiment, the container body 20 of the connector 2 is rotatably held by the mounting cylinder 32, and the hook-shaped piece 21 a of the body 21 of the connector 2 is interposed between the tool body 3 and the tool mounting plate 5. Even if the connector 2 is attached to the hooking ceiling 1, the instrument body 3 can be rotated around the connector 2 as a rotation axis, and the detection ranges of the heat ray sensor 8 and the brightness sensor can be set. Can be adjusted. In addition, since the body side rib 23 of the body 21 of the connector 2 is engaged with the concave and convex portions between the adjacent main body side ribs 33a of the concave and convex portion 33 provided on the mounting cylinder 32, the instrument body 3 is rotated. Since the rotational torque necessary for the body-side rib 23 of the connector 2 to get over the body-side rib 33a of the concavo-convex portion 33 is required, the instrument body 3 can be prevented from rotating carelessly ( For example, the instrument body 3 can be prevented from rotating when the shade 60 is rotated in the direction of arrow B in FIG. Here, when the instrument main body 3 is rotated, the connector side connector 42 is disconnected from the main body side connector 43 (see FIGS. 2 and 4) connected to the first circuit board 45, so that the connection is made. It is possible to prevent an excessive force from being applied to the wire 41. Note that there are four connection lines 41 led out from the connector 2, and two are for supplying power from the commercial power source to the lighting circuit or the like through the pair of hooking blades 29. Two are for feeding power from the lighting circuit to the lamp socket 6.
[0035]
【The invention's effect】
The invention of claim 1 is a device main body, a power supply wiring device fixed to the construction surface and a connector used for mechanical and electrical connection between the device main body and a part of the connector body. A fitting mounting plate in which a fitting hole to be fitted is formed and fixed to the construction surface side of the tool body , a light source that is fed with power through at least a wiring tool and a connector, and a switch inserted in a feeding path to the light source And a signal processing unit that controls the switch element based on the detection output of the heat ray sensor, and the connector is a cylindrical device. A bowl-shaped piece is formed at a predetermined portion on the construction surface side in the axial direction of the container body, the instrument body includes a cylindrical mounting tube in which the container body of the connector is rotatably held, and a heat ray sensor It has an exposure hole at the bottom that exposes the detection surface of the Are also formed on the circuit housing portion disposed outside sites together, a heat ray sensor placed in circuit housing portion in the detection surface state of facing the insertion holes, the upper edge and the fitting hole of the instrument mounting plate of the mounting cylinder A hook-shaped piece is sandwiched between the peripheral part of the connector and the connector body is attached even after the connector mechanically connected to the instrument body is attached to the wiring instrument fixed to the construction surface. Since the tool body can be rotated in a plane parallel to the construction surface by using it as a rotation axis, the direction of the tool body can be adjusted without preparing a separate member for rotating the direction of the tool body. There is an effect that can be. Moreover, there exists an effect that the detection range of a heat ray sensor can be adjusted by rotating an instrument main body within the surface parallel to a construction surface.
[0036]
According to a second aspect of the present invention, in the first aspect of the invention, an instrument side rib parallel to the axial direction of the instrument body is projected on the outer peripheral surface of the connector body, and the instrument side rib is provided on the inner peripheral surface of the mounting cylinder. Since the concavo-convex part that engages is formed, in order to rotate the instrument body, torque is required to disengage the body side rib from the concavo-convex part. There is an effect that the rotation can be prevented.
[0037]
According to a third aspect of the present invention, in the second aspect of the present invention, there are provided the above-mentioned eight body side ribs and two above-mentioned concavo-convex portions, and each of the body side ribs protrudes at equal intervals in the circumferential direction of the container body. Each concavo-convex portion includes a plurality of body-side ribs that protrude in parallel to the axial direction of the mounting cylinder and are adjacent to each other in the circumferential direction of the mounting cylinder, and each concavo-convex section has both ends in the circumferential direction of the mounting cylinder and the central axis of the mounting cylinder. The central angle of the fan shape surrounded by is set to 45 ° and is formed at a position sandwiching the central axis of the mounting cylinder, so it is necessary when rotating the instrument body regardless of the position of the mounting cylinder and the body There is an effect that a large torque can be made substantially constant.
[0039]
A fourth aspect of the present invention is the invention according to any one of the first to third aspects, wherein the cylindrical shade attached to the instrument body and a detection area adjusting lens disposed so as to cover the heat ray sensor on the detection surface side of the heat ray sensor. Since the lens is positioned above the lower edge of the shade, the lens is less noticeable and has an effect of improving the appearance.
[Brief description of the drawings]
FIG. 1 shows an embodiment, (a) is a plan view, and (b) is a cross-sectional view.
FIG. 2 is a bottom view of the same.
FIG. 3 is an exploded perspective view of the above.
FIG. 4 is an exploded perspective view of the main part of the above.
FIG. 5 is a perspective view of the main part of the above.
FIG. 6 is an explanatory diagram of a main part of the above.
FIG. 7 is an explanatory diagram of a main part of the above.
FIG. 8 is a bottom view of the main part of the above.
FIG. 9 is a bottom view of the instrument main body.
FIG. 10 is a perspective view of the same.
11A and 11B show another lighting fixture, where FIG. 11A is a cross-sectional view, and FIG. 11B is a bottom view.
FIG. 12 is an exploded perspective view showing a conventional example.
FIG. 13 is an exploded perspective view showing another conventional example.
FIG. 14 is a perspective view of a hook ceiling.
[Explanation of symbols]
2 connector 3 instrument body 20 body 21 body 21a bowl-shaped piece 22 cover 30 mounting base 32 mounting cylinder 51 fitting hole 53 fixing screw

Claims (4)

A connector body used for mechanical and electrical connection between the instrument body, a power supply wiring instrument fixed to the construction surface, and the instrument body, and a fitting hole into which a part of the connector body is fitted Is formed and fixed to the construction surface side of the tool body , a light source that is fed at least through the wiring tool and the connector, a switch element that is inserted into a power feeding path to the light source, and a detection area. A heat ray sensor capable of obtaining an output corresponding to the presence or absence of a person, and a signal processing unit for controlling the switch element based on a detection output of the heat ray sensor, and the connector includes a cylindrical vessel body A hook-shaped piece is formed at a predetermined site on the construction surface side in the axial direction, and the instrument body is exposed to expose a detection surface of the heat ray sensor and a cylindrical mounting cylinder in which the connector body is rotatably held. It has a hole at the bottom and is placed outside the outer peripheral surface of the mounting cylinder. It is formed integrally with the circuit housing portion that, the detection surface disposed on a circuit accommodation section heat ray sensor in a state of facing the exposure hole, between the peripheral portion of the upper edge and the fitting hole of the instrument mounting plate of the mounting cylinder A luminaire characterized in that a bowl-shaped piece is sandwiched between the two. A body side rib parallel to the axial direction of the body is projected on the outer peripheral surface of the body of the connector, and an uneven portion is formed on the inner peripheral surface of the mounting cylinder to engage the body side rib. The lighting fixture according to claim 1. Eight said ribs on the body side and two above-mentioned concavo-convex parts are provided, and each rib on the container side protrudes at equal intervals in the circumferential direction of the container, and each concavo-convex part is parallel to the axial direction of the mounting cylinder. It consists of a plurality of main body side ribs that protrude and are adjacent to each other in the circumferential direction of the mounting cylinder, and each concavo-convex portion is set to a sector angle of 45 ° surrounded by both ends in the circumferential direction of the mounting cylinder and the central axis of the mounting cylinder. The lighting fixture according to claim 2, wherein the lighting fixture is formed at a position sandwiching the central axis of the mounting cylinder. A cylindrical shade attached to the fixture body and a detection area adjustment lens disposed on the detection surface side of the heat ray sensor so as to cover the heat ray sensor, the lens being positioned above the lower edge of the shade. The lighting fixture according to any one of claims 1 to 3, wherein

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