JP2001126527A - Illuminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illuminating device in which a direction of a device body can be adjusted. SOLUTION: A connector 2 is attached to an attaching base 30 of a device body 3. In the attaching base 30, there is formed a cylindrical tube 32 in which a body 20 of the connector 2 is rotably maintained. An inner peripheral surface of the attaching tube 32 is opposite to an outer peripheral surface of a body 21 of the connector body 20. A blade-shaped piece 21a is protruded from a top end of a peripheral wall of the connector body 21 of the connector 2. The lower face of the blade-shaped piece is in contact with the upper end edge of the attaching tube 32, thereby being positioned. On the upper surface side of the device body 3, there is fixed a device attaching plate 5 using a fixing screw 53. The device attaching plate 5 is made of a metal plate of a thin film shape on which a fitting hole 51 is perforated. A cover 22 of the body 20 is fitted in the fitting hole 51. The connector 2 is attached to the attaching base 30 in such a manner that the blade-shaped piece is interposed between the peripheral portion of the insertion port 51 of the device attaching plate 5 and the upper end edge of the attaching tube 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture.

[0002]

2. Description of the Related Art Conventionally, various types of lighting devices such as a lighting device directly mounted on a ceiling, a lighting device suspended from a ceiling, and a lighting device which is installed by using a wiring device (for example, a hanging ceiling) already installed on a construction surface. An instrument is provided. Also,
There is also provided a lighting fixture of this type, in which a sensor such as a heat ray sensor or a brightness sensor is added to automatically turn on / off a light source (lighting load) based on a detection output of the sensor.

[0003] By the way, in this type of lighting fixture, it is possible to adjust the orientation of the fixture main body depending on the shape of the fixture main body, the position of the sensor in the fixture main body, etc. for the purpose of adjusting the appearance and the detection range of the sensor. Is desired. For example, a lighting fixture that uses a hot-wire sensor consisting of a pyroelectric element to detect when a person enters or exits a toilet and automatically turns on and off the light source (lighting load) detects slight movement 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 one having 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 ′ that is directly attached to a construction surface 80 such as a ceiling surface using a mounting screw 83 formed of a wood screw, and a lamp 7 formed of an incandescent lamp. A lamp socket 6 ′ which is disposed on the lower surface side of the mounting base 30 ′ and supports a base 7 a of the lamp 7 and has a spiral thread 6 a formed on the outer peripheral surface thereof; Mounting base 30 ′ using nut-shaped holder 4 to be fitted
Cylindrical shade 60 'with an open bottom surface
And An insertion hole 64 into which the lamp socket 6 ′ is inserted is drilled on the upper surface of the shade 60 ′, and the holder 60 is screwed into the lamp socket 6 ′ inserted into the insertion hole 64 so that the shade 60 ′ is inserted. Mounting base 30 '
It can be attached to.

[0005] The lighting fixture having the configuration shown in FIG. 12 includes a lighting circuit (not shown) for lighting the lamp 7, a switch element (not shown) inserted into a power supply path to the lamp 7 in the lighting circuit, and a detection circuit. A heat ray sensor (not shown) composed of a pyroelectric element or the like for detecting the presence or absence of a person in the area, a brightness sensor (not shown) for detecting the surrounding brightness, based on outputs of the heat ray sensor and the brightness sensor There is provided a rectangular parallelepiped circuit storage section 31 'in which a circuit board on which components such as a signal processing section (not shown) for controlling the switch element are mounted is stored. Here, a lens 9 composed of a bowl-shaped Fresnel lens is provided 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 31 '
The lens 9 is housed in a bottomed rectangular cylindrical cover 70 formed integrally with the cover 70, and the lens 9 is exposed through an opening window 71 formed in the bottom wall of the cover 70.

The luminaire having the configuration shown in FIG. 12 is connected to an AC power supply composed of a commercial power supply, is pre-wired behind the ceiling, and has a power supply line 81 drawn out from a power supply hole 80a formed in the construction surface 80. Power.

[0007] On the other hand, there is also known a lighting fixture configured as shown in FIG. 13 which is supplied with power using a wiring fixture fixed to a construction surface such as a ceiling surface. Note that the same components as those shown in FIG. 12 are denoted by the same reference numerals, and description thereof will be omitted.

A lighting fixture having the structure shown in FIG. 13 has a hooking ceiling 1 as a wiring fixture fixed to a construction surface such as a ceiling surface.
Is attached using a connector 2 '. Here, the connector 2 'has a pair of hooking blades 29 each having an L-shaped tip. Although FIG. 13 illustrates the hooking ceiling 1 in which the body 11 is formed in a rectangular parallelepiped shape, as the hooking sealing 1, there is a hooking ceiling 1 in which the body 11 is formed in a bottomed cylindrical shape as shown in FIG. .

A pair of hooking blade insertion openings 19 into which hooking blades 29 are inserted are formed in the periphery of the bottom wall of the body 11 of the hooking ceiling 1. Here, both the hooking blade insertion openings 19 are formed on one circular arc centered on the center of the bottom wall of the body 11, and are each formed in an arc shape.

On the other hand, the connector 2 'is provided with a rectangular parallelepiped body 21' having an open upper surface. 19a (see FIG. 14), the body 21 'is rotated after being inserted into the hooking blade insertion slot 19, and the distal end of the hooking blade 29 is narrowed into the narrow portion 19b of the hooking blade insertion slot 19.
By overlapping with the peripheral edge of the hooking plug blade 29 (see FIG. 14), a hook blade receiving portion (not shown) provided in the body 11 of the hooking ceiling 1 holds the tip end of the hooking blade 29.

A connector 2 'is provided on the lower surface side of the mounting base 30 "of the fixture body 3" of the lighting fixture having the configuration shown in FIG.
Cylindrical portion 2 continuously and integrally protruded from the bottom wall of body 21
A holder 44 for holding the connector 1c is provided, and a body-side connector 43 is provided to which the connector-side connector 42 at the end of the connection wire 41 led out from the connector 2 'is coupled. Substantially U-shaped mounting base 38
Is attached. The lamp socket 6 'is attached to the mounting base 38.

[0012]

By the way, in the above-mentioned lighting fixture, after attaching the lighting main bodies 3 ', 3 ",
The instrument body 3 ', 3 "cannot be rotated in a plane parallel to the construction surface (that is, the orientation of the instrument bodies 3', 3" cannot be changed), and the detection range of the hot-wire sensor is adjusted. There was a problem that it could not be done. In addition, the appearance may deteriorate depending on the position of the circuit housing portion 31 '.

[0013] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a lighting fixture capable of adjusting the orientation of a fixture main body.

[0014]

In order to achieve the above object, the invention of claim 1 provides a mechanical and electrical connection between an instrument body, a power supply wiring instrument fixed to a construction surface, and the instrument body. A connector used for connection, an instrument mounting plate formed with a fitting hole into which a part of the body of the connector is fitted and fixed to a construction surface side of the instrument body, and at least a wiring instrument and a connector. The connector has a cylindrical body, a flange-shaped piece is formed at a predetermined portion on the construction surface side in the axial direction of the body, and the appliance body is a body of the connector. A rotatable holding cylinder is formed, and a flange-shaped piece is sandwiched between an upper edge of the mounting cylinder and a peripheral portion of a fitting hole of the instrument mounting plate. After attaching the connector mechanically connected to the equipment body to the wiring equipment fixed to the construction surface Also, since the body of the connector can be rotated in a plane parallel to the construction surface using the body of the connector as a rotation axis, there is no need to separately prepare a member for rotating the direction of the body of the equipment. The orientation of the instrument body can be adjusted.

According to a second aspect of the present invention, in the first aspect of the present invention, a body-side rib parallel to the axial direction of the body is projected from an outer circumferential surface of the body of the connector, and the rib is provided on an inner circumferential surface of the mounting cylinder. Since the uneven portion with which the body-side rib is engaged is formed, a torque for disengaging the body-side rib and the uneven portion is required in order to rotate the instrument body. Inadvertent rotation can be prevented.

According to a third aspect of the present invention, in the second aspect of the present invention, eight of the body-side ribs are provided and two of the concave-convex portions are provided, and the body-side ribs are spaced at equal intervals in a circumferential direction of the body. The concave and convex portions are formed of a plurality of main body side ribs protruded in parallel with the axial direction of the mounting cylinder and adjacent in the circumferential direction of the mounting cylinder. The central angle of the sector surrounded by the central axis of 45 °
, And formed at a position sandwiching the central axis of the mounting cylinder, the torque required when rotating the instrument body can be substantially constant regardless of the position of the mounting cylinder and the body.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, a switch element inserted into a power supply path to the light source and a hot-wire sensor capable of obtaining 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 hot-wire sensor. Since at least the hot-wire sensor is disposed at a key point of the tool main body, the tool main body is arranged in a plane parallel to the construction surface. By rotating, the detection range of the heat ray sensor can be adjusted.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, there is provided a cylindrical shade attached to the instrument main body, and a detection area adjusting means provided on the detection surface side of the heat ray sensor so as to cover the heat ray sensor. Since the lens is provided above the lower edge of the shade, the lens is less noticeable and has a better appearance.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lighting apparatus according to the present embodiment will be described below with reference to FIGS.

The lighting fixture of this embodiment has a hooking ceiling 1 fixed to a construction surface such as a ceiling surface (see FIG. 1B).
Connector 2 used for mechanical and electrical connection between the connector and the instrument body 3, an instrument body 3 having an attachment base 30 to which the connector 2 is attached by using the instrument attachment plate 5, and connection to the connector 2 Lamp 7 consisting of an incandescent lamp in which a lamp socket 6 and a base 7a are held by the lamp socket 6
And a shade 60 detachably attached to the lower surface side of the attachment base 30. The hooking ceiling 1 shown in FIG. 1B includes a bottomed cylindrical body 11 having an open upper surface (the upper surface in FIG. 1B), and the upper end surface of the body 11 is brought into contact with a construction surface. It is fixed using a wood screw 84 in a bent shape.

The configuration of the hooking ceiling 1 shown in FIG. 1B is substantially the same as the conventional configuration shown in FIG.
A pair of hooking blade insertion openings 19 (see FIG. 1) into which hooking blades 29 (see FIGS.
4) is opened. Here, both the hooking blade insertion openings 19 are formed on one circular arc centered on the center of the bottom wall of the body 11, and are each formed in an arc shape.

On the other hand, as shown in FIGS. 4 and 5, the connector 2 has a pair of hooking blades 29 each having an L-shaped tip protruding from the upper surface of the body 20. And electrically connected. The container 20 of the connector 2 is made of a synthetic resin (for example, polyethylene terephthalate = PE).
T), and as shown in FIGS. 4 to 8, a cylindrical body 21 having an open upper surface and a disc-shaped cover 22 for closing the opening of the body 21 are connected to each other. The 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 at the periphery of the cover 22. The lock claw 24 protrudes from a position on the upper surface of the cover 22 that is displaced along the circumferential direction of the cover 22 from a position where one of the hooking blades 29 protrudes,
In a state where the container body 20 is connected to the hooking ceiling 1, the one hooking blade 29 is inserted into the wide portion 19a of the hooking blade insertion slot 19 into which the one hooking blade 29 is inserted.

Here, the lock claw 24 is
1 is a cylindrical mounting base 21 continuously and integrally protruded from the bottom wall.
b moves in and out of the upper surface of the cover 22 in conjunction with the operation of the lock release button 25 provided on the side of b. When the body 20 is connected to the hooking ceiling 1, the lock release button 25 is pressed. By operating, the lock claw 24 retreats from the wide portion 19a of the hooking blade insertion slot 19, and when the pressing operation is stopped, the lock claw 24 advances from the wide portion 19a of the hooking blade insertion opening 19 into the body 11. It has become. Further, the lock claw 24 moves downward such 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.

In order to attach the connector 2 to the hooking ceiling 1, a hooking blade 29 having an L-shaped tip is inserted into the hooking blade insertion slot 19 from the wide portion 19a of the hooking blade insertion slot 19 and locked. After pressing the tip of the claw 24 against the body 11 of the hooking ceiling 1, the body 20 is rotated, and the tip of the hooking blade 29 is narrowed by the narrow portion 19 b of the hooking blade insertion slot 19.
By overlapping with the peripheral edge of the hook sealing blade 1, the leading end of the hooking blade 29 is held by a hook blade receiving portion (not shown) provided in the body 11 of the hook sealing 1. Note that the pressing force of the body 11 is released during the rotation of the lock claw 24, and the leading end of the lock claw 24 enters the wide portion 19a of the hooking blade insertion slot 19.

The connecting device 2 has a cylindrical lamp socket 6 connected to the lower end of the mounting base 21b, and is mounted on a mounting base 30 of the appliance body 3.

The device main body 3 is made of a synthetic resin (for example, ABS resin), and a mounting base 30 is formed with a cylindrical mounting tube 32 on which the body 20 of the connector 2 is rotatably held. The inner peripheral surface of the mounting cylinder 32 and the body 2 of the body 20
1 is positioned so that the lower surface of the flange-shaped piece 21 a protruding from the upper end of the peripheral wall of the body 21 of the connector 2 over substantially the entire periphery thereof abuts against the upper end edge of the mounting cylinder 32. You. Further, on the upper surface side of the instrument body 3, an instrument mounting plate 5 made of a thin metal plate having a fitting hole 51 into which the cover 22 of the container 20 is fitted is fixed using fixing screws 53. You.

The instrument mounting plate 5 is formed by bending an L-shaped mounting piece 52 having an insertion hole through which a fixing screw 53 is inserted, and inserting the fixing screw 53 through the insertion hole of the mounting piece 52. Then, it is fixed to the instrument body 3 by screwing into the screw hole of the boss 36 of the mounting base 30. put it here,
The connector 2 is attached to the mounting base 30 in such a manner that the flange-shaped piece 21a is sandwiched between the periphery of the fitting hole 51 of the instrument mounting plate 5 and the upper edge of the mounting tube 32 (that is, the mounting base 30). It is attached.

The lighting fixture of the present embodiment has a lamp 7
A lighting circuit (not shown) for turning on the light, a switch element (not shown) inserted into a power supply path to the lamp 7, and a hot-wire sensor 8 composed of a pyroelectric element for detecting the presence or absence of a person in the detection area
(See FIG. 1B), a brightness sensor (not shown) made of CdS for detecting the surrounding brightness, a signal processing unit for controlling the switch element based on the outputs of the hot-wire sensor 8 and the brightness sensor ( (Not shown). Here, when the detection output by the hot-wire 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 hot-wire sensor 8 is not obtained. After a predetermined time (for example, 30 seconds), the lamp 7 is turned off. This predetermined time (hereinafter, referred to as a lighting holding time) corresponds to the first variable resistor V
It can be changed by adjusting the resistance value of R1 (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 there is a detection output by the heat ray sensor 8. 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 the lighting of the lamp 7 is unnecessary, 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.

A first circuit board 45 on which components such as a lighting circuit, a switch element, and a signal processing section are mounted, a human sensor 8, a brightness sensor, a first variable resistor VR1, and a second
The second circuit board 46 on which the variable resistor and the like are mounted is housed in the circuit housing 31 of the instrument body 3. The circuit housing portion 31 has a bottomed cylindrical shape with an open upper surface, and is formed continuously and integrally with the mounting base 30. Circuit storage part 3
The upper surface of 1 is closed by a part of the instrument mounting plate 5 described above. Here, the thickness direction of the first circuit board 45 is shown in FIG.
The circuit storage unit 3 is aligned in the left-right direction in FIG.
1, the second circuit board 46 has a thickness direction coinciding with the up-down direction in FIG. 1B, and the heat ray sensor 8 and the brightness sensor respectively. Circuit storage unit 3 so that the detection surface of
1. A bowl-shaped lens 9 that covers both the heat ray sensor 8 and the brightness sensor is provided on the lower surface side of the second circuit board 46. The lens 9 is a Fresnel lens formed of a material such as high-density polyethylene having a light-transmitting property and easily transmitting heat rays. The lens 9 has a plurality of focal points and sets a detection area of the heat ray sensor 8 to a plurality of areas. Is to be divided. Therefore, it is possible to detect a slight movement of a person even in a space where the movement of the person is small, such as a toilet. A in FIG. 1B indicates a detection area of the heat ray sensor 8.

A part of the lens 9, the knob 17 of the first variable resistor VR 1, and the knob 18 of the second variable resistor are each provided with an exposure hole 31 formed in the bottom wall of the circuit housing 31.
a, 77, 78 are exposed. put it here,
The circuit storage unit 31 has a lower surface 60 in the up-down direction.
Is formed to be located above the lower edge of the
The lower ends of the knobs 17 and 18 and the lower end of the lens 9 are all located above the lower edge of the shade 60.
Therefore, the lens 9 and the knobs 17 and 18 are less conspicuous when the lighting fixture is viewed from the lower right side of FIG. In addition, 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 edge of the shade 60 is achieved by using a mounting screw 83 made of wood screws as shown in FIG. Of course, the present invention can be applied to a lighting fixture fixed to a construction surface. 11, the same components as those in FIG. 1 are denoted by the same reference numerals, and an arrow C indicated by a dashed line in FIG. 11 indicates a line of sight of a person entering the toilet, and is indicated by a solid line. Arrow D indicates the light of lamp 7.

The shade 60 is formed in a cylindrical shape with an open lower surface. In order to attach the seed 60 to the appliance main body 3, each of the three L-shaped engaging claws 34 protruding from the lower end surface of the peripheral portion of the mounting base 30 of the appliance main body 3 is widened in the shade engaging claw insertion opening 61. After the shade 61 is inserted into the locking claw insertion opening 61 from the portion 61a, the shade 61 is rotated in the direction of arrow B in FIG. 2 so that the tip of the locking claw 34 engages with the peripheral edge of the narrow portion 61b of the locking claw insertion opening 61. It is designed to stop.

On the outer peripheral surface of the body 21 of the connector 2, eight body-side ribs 23 for making the distance between the inner peripheral surface of the mounting cylinder 32 of the mounting base 30 smaller than other parts are provided on the body 21. Are formed at regular intervals in the circumferential direction. 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, two adjacent body side ribs 23 and the body 2
The central angle of the sector surrounded by the central axis of 0 is 45 °.

On the other hand, the inner peripheral surface of the mounting cylinder 32 of the mounting base 30 is formed by a plurality of main body side ribs 33a for making the distance between the outer peripheral surface of the body 21 of the connector 2 smaller than other parts. Two concave / convex portions 33 with which the body-side rib 23 of the connector 2 is engaged are formed between the main body-side ribs 33 a at positions 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 33a is formed along the axial direction (vertical direction) of the mounting cylinder 32. Also, as shown in FIG.
Of the concave and convex portion 33 in the circumferential direction of the
The central angle of the sector surrounded by the central axis 2 is 45 °.

In this embodiment, however, the body 20 of the connector 2 is rotatably held by the mounting tube 32 and the flange 21 of the body 21 of the connector 2 is provided between the tool body 3 and the tool mounting plate 5. Piece 2
1a, the connector 2 is hooked to the ceiling 1
Can be rotated with the connector 2 as a rotation axis, and the detection ranges of the heat ray sensor 8 and the brightness sensor can be adjusted.
The body-side ribs 23 of the body 21 of the connector 2 are adjacent to the main body-side ribs 33 adjacent to the concave-convex portions 33 provided on the mounting cylinder 32.
Since the concave and convex portions are engaged with each other, the rotating torque required for the body-side rib 23 of the connector 2 to pass over the body-side rib 33a of the concave-convex portion 33 is required to rotate the instrument body 3. Therefore, it is possible to prevent the device main body 3 from being inadvertently rotated (for example, the shade 60 is indicated by an arrow B in FIG. 2).
The device body 3 can be prevented from rotating when it is rotated in the opposite direction or in the opposite direction). Here, when the instrument main body 3 is rotated, the connector side connector 42 is detached from the main body side connector 43 (see FIGS. 2 and 4) connected to the first circuit board 45, so that the connection is established. Line 41
Can be prevented from being subjected to excessive force. It should be noted that the number of connection lines 41 derived from the connector 2 is four,
The book is used to supply power from the commercial power supply to the lighting circuit and the like via the pair of hooking blades 29, and the remaining two books are used to supply power to the lamp socket 6 from the lighting circuit.

[0035]

According to the first aspect of the present invention, there is provided a connector main body, a connector used for mechanical and electrical connection between a power supply wiring device fixed to a construction surface and the tool main body, and a connector of the connector. A fitting hole in which a part of the body is fitted is formed, and a fixture mounting plate fixed to the construction surface side of the fixture body, and a light source supplied with power through at least a wiring fixture and a connector are provided, and the connector is A flange-shaped piece is formed at a predetermined position on the construction surface side in the axial direction of the container, and the appliance body has a cylindrical attachment in which the container body of the connector is rotatably held. A tube is formed, and a flange-shaped piece is sandwiched between the upper end edge of the mounting tube and the periphery of the fitting hole of the device mounting plate, and a connector mechanically connected to the device main body is constructed. Even after attaching to the wiring equipment fixed to the surface, the body of the connector is used as a rotation axis and the equipment body is attached to the construction surface It is possible to rotate in a row plane, there is an effect that it is possible to adjust the orientation of the instrument body without preparing members for rotating the direction of the instrument body separately.

According to a second aspect of the present invention, in the first aspect of the present invention, a body-side rib parallel to the axial direction of the body is projected from an outer circumferential surface of the body of the connector, and the rib is provided on an inner circumferential surface of the mounting cylinder. Since the uneven portion with which the body-side rib is engaged is formed, a torque for disengaging the body-side rib and the uneven portion is required in order to rotate the instrument body. There is an effect that it is possible to prevent careless rotation.

According to a third aspect of the present invention, in the second aspect of the present invention, there are provided eight of the body-side ribs and two of the concave and convex portions, and the body-side ribs are spaced at equal intervals in a circumferential direction of the body. The concave and convex portions are formed of a plurality of main body side ribs protruded in parallel with the axial direction of the mounting cylinder and adjacent in the circumferential direction of the mounting cylinder. The central angle of the sector surrounded by the central axis of 45 °
, And is formed at a position sandwiching the center axis of the mounting cylinder, so that the torque required when rotating the appliance body can be substantially constant regardless of the position of the mounting cylinder and the body. effective.

According to a fourth aspect of the present invention, in the first to third aspects of the present invention, a switch element inserted in the power supply path to the light source and a hot-wire sensor capable of obtaining 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 hot-wire sensor. Since at least the hot-wire sensor is disposed at a key point of the tool main body, the tool main body is arranged in a plane parallel to the construction surface. By rotating, there is an effect that the detection range of the heat ray sensor can be adjusted.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, there is provided a cylindrical shade attached to the instrument body, and a detection area adjusting means provided on the detection surface side of the heat ray sensor so as to cover the heat ray sensor. Since the lens is provided above the lower edge of the shade, the lens is less noticeable and has an improved appearance.

[Brief description of the drawings]

FIG. 1 shows an embodiment, wherein (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 same.

FIG. 4 is an exploded perspective view of a main part of the above.

FIG. 5 is a perspective view of a main part of the above.

FIG. 6 is an explanatory view 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 a 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 apparatus, wherein FIG.
(B) 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 hooking ceiling.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 Connector 3 Instrument main body 20 Instrument body 21 Body 21a Flange-shaped piece 22 Cover 30 Mounting base 32 Mounting cylinder 51 Fitting hole 53 Fixing screw

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) F21Y 101: 00 F21S 1/02 B (72) Inventor Hideharu Kawachi 1048 Odakadoma, Kazuma-shi, Osaka Matsushita Electric Works, Ltd. (72) Inventor Ken Imai 1-55 Yoshida Shimojima, Higashi-Osaka City, Osaka Asahi National Lighting Co., Ltd. (72) Inventor Satoshi Yajima 1-55 Yoshida Shimoshima, Higashi-Osaka City, Osaka Asahi National Lighting Co., Ltd. F term (reference) 3K014 AA01 GA03 PB04 3K073 AA83 BA25 BA28 CF13 CG15 CJ14 CJ22

Claims (5)

[Claims] A connector used for mechanical and electrical connection between an appliance body, a power supply wiring instrument fixed to a construction surface, and the appliance body, and a part of the connector body is fitted. A fitting hole to be formed is formed, and a fixture mounting plate fixed to the construction surface side of the fixture main body, and a light source supplied with power through at least the wiring fixture and the connector are provided, and the connector has a cylindrical body. A flange-shaped piece is formed at a predetermined position on the construction surface side in the axial direction of the holding body, and the appliance body is formed with a cylindrical mounting cylinder in which the body of the connecting device is rotatably held. A lighting device characterized in that a flange-shaped piece is sandwiched between an upper edge of the fitting and a peripheral portion of a fitting hole of the device mounting plate. 2. An outer peripheral surface of a body of the connector has a body-side rib projecting parallel to an axial direction of the body, and an inner peripheral surface of a mounting tube is formed with an uneven portion with which the body-side rib is engaged. The lighting fixture according to claim 1, wherein the lighting fixture comprises: 3. The apparatus according to claim 1, further comprising: eight ribs on the side of the body and two ribs on the side of the body, wherein the ribs on the side of the body are projected at equal intervals in the circumferential direction of the body. It is composed of a plurality of main body side ribs protruding in parallel with the axial direction and adjacent in the circumferential direction of the mounting cylinder, and each concave and convex portion has a central angle of a sector surrounded by both ends in the circumferential direction of the mounting cylinder and the central axis of the mounting cylinder. 3. The lighting device according to claim 2, wherein the lighting device is set at 45 [deg.] And formed at a position sandwiching a central axis of the mounting cylinder. 4. A switch element inserted in a power supply path to a light source, a hot-wire sensor for obtaining an output according to the presence or absence of a person in a detection area, and the switch element is controlled based on a detection output of the hot-wire sensor. The lighting device according to any one of claims 1 to 3, further comprising a signal processing unit, wherein at least the heat ray sensor is disposed at a key point of the device main body. 5. A shade having a cylindrical shape attached to an instrument body and a lens for adjusting a detection area disposed on the detection surface side of the heat ray sensor so as to cover the heat ray sensor, wherein the lens is a lower edge of the shade. The lighting device according to claim 4, wherein the lighting device is located above the lighting device.