JP2017091958A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance mechanical strength while improving reception sensitivity.SOLUTION: A lighting fixture X according to the embodiments facilitates reception of radio signals (radio waves) by inserting an antenna 600 of a radio communication device 6 into a slit 53 of a mounting plate 5. Further, since the slit 53 is equal to or more than a half of a wavelength of the radio wave, the radio signals (radio waves) enter a fixture body 1 from the slit 53, and is reflected in the fixture body 1, thereby enhancing the possibility that the radio signals are received by the antenna 600.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture capable of wireless communication using radio waves as a medium.

  As a conventional example, an LED device described in Patent Document 1 is illustrated. The LED device described in Patent Document 1 includes a housing made of synthetic resin, a metal core printed circuit board insert-molded in the housing, an LED mounted on the metal core printed circuit board, and a metal core printed circuit board. And a mounted antenna. In addition, a radio receiver connected to the antenna and a power source for supplying power to the LED and the radio receiver are housed inside the housing.

JP-T-2015-508563

  Incidentally, in the LED device described in Patent Document 1, the housing is formed of a non-metallic material (for example, synthetic resin) in order to increase the receiving sensitivity of the antenna. However, if the material forming the housing that supports the metal core printed circuit board or the power source is limited to non-metallic materials such as synthetic resin, it is easy to increase the mechanical strength of the housing (the instrument body). There is a problem of disappearing.

  The present invention has been made in view of the above problems, and an object of the present invention is to increase mechanical strength while improving reception sensitivity.

  The lighting fixture of the present invention includes a fixture main body and a lighting unit attached to the fixture main body, and the lighting unit includes one or a plurality of light source units and a wireless communication device that performs wireless communication using radio waves as a medium. A mounting plate on which at least a part is made of metal, the light source unit is mounted on the front surface, and the wireless communication device is mounted on the back surface, and the instrument body has an opening on one side. The wireless communication device includes an antenna, a wireless communication circuit that acquires a control command from a wireless signal received by the antenna, and a housing that houses the antenna and the wireless communication circuit The mounting plate is provided with a slit having a length of one-half or more of the wavelength of the radio wave, through which the antenna is inserted from the back surface toward the front surface, and Characterized in that it is housed said surface within said instrument body in a direction to be opposed to the opening.

  The lighting apparatus of the present invention has an effect that the mechanical strength can be increased while improving the receiving sensitivity.

It is the disassembled perspective view which showed the lighting fixture which concerns on embodiment of this invention, and was seen from diagonally upward. It is the disassembled perspective view which showed the lighting fixture which concerns on embodiment of this invention, and was seen from diagonally downward. It is a top view of the lighting fixture which concerns on embodiment of this invention. It is a circuit block diagram of the power supply device and radio | wireless communication apparatus in the lighting fixture which concerns on embodiment of this invention. It is a disassembled perspective view of the radio | wireless communication apparatus in the lighting fixture which concerns on embodiment of this invention. It is the disassembled perspective view which showed the lighting fixture which concerns on embodiment of this invention, and abbreviate | omitted one part. It is the top view which showed the lighting fixture which concerns on embodiment of this invention, and abbreviate | omitted the top plate. It is sectional drawing of the principal part which shows the lighting fixture which concerns on embodiment of this invention, and contains a radio | wireless communication apparatus.

  Hereinafter, the lighting fixture which concerns on embodiment of this invention is demonstrated in detail with reference to drawings. The configurations described in the following embodiments are merely examples of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention. Further, in the following description, unless otherwise specified, the vertical and horizontal directions and the front and rear directions are defined in the direction shown in FIG.

  As illustrated in FIGS. 1 and 2, the lighting fixture X according to the present embodiment includes a fixture main body 1 and a lighting unit 2 that is detachably attached to the fixture main body 1. Furthermore, the lighting fixture X according to the present embodiment preferably includes a panel unit 7.

  The instrument body 1 is formed in a rectangular box shape having an opening on the lower surface by combining a rectangular tube-shaped frame body 10 and a rectangular flat plate top plate 11. However, the top plate 11 is formed such that the length in the left-right direction is shorter than the length in the left-right direction of the frame 10. Therefore, a rectangular window hole 12 is provided at the right end on the upper surface of the instrument body 1.

  The frame body 10 has a pair of first side plates 100 facing in the left-right direction and a pair of second side plates 101 facing in the front-rear direction. The pair of first side plates 100 is formed in a substantially rectangular plate shape. The pair of second side plates 101 is formed in a substantially rectangular plate shape. However, a step portion 1010 is provided at the middle portion of the pair of second side plates 101 in the vertical direction over the entire length in the horizontal direction. Further, two holes 1011 are formed in the stepped portion 1010 of the pair of second side plates 101 with a gap in the left-right direction. These holes 1011 are formed in the second side plate 101 over the step portion 1010 and a portion above the step portion 1010. The frame 10 is configured by welding the left and right ends of the pair of second side plates 101 to the left and right ends of the pair of first side plates 100, respectively.

  The top plate 11 is formed in a rectangular flat plate shape by a metal plate such as a steel plate. Moreover, the top plate 11 is provided with an insertion hole 110 through which a power supply line for power supply is inserted. The power line inserted through the insertion hole 110 is electrically connected to the terminal block 16 fixed to the lower surface of the top plate 11. Furthermore, the top plate 11 is provided with a plurality of (three in the illustrated example) bolt insertion holes 112 through which suspension bolts embedded in a building frame are inserted in a line in the front-rear direction.

  The instrument main body 1 is inserted into a ceiling material embedding hole, and a nut is fastened to a suspension bolt inserted into a bolt insertion hole 112 of the top plate 11 and fixed to the suspension bolt.

  As shown in FIGS. 1 and 2, the lighting unit 2 includes a plurality (four in the illustrated example) of light source units 3, a power supply device 4, a mounting plate 5, a wireless communication device 6, and the like.

  The four light source units 3 each include an LED module 30, a reflecting member 31, and an optical member 32 (see FIG. 2). The LED module 30 includes an approximately square substrate 300 and a plurality of LEDs 301 arranged and mounted in a matrix on one surface (lower surface) of the substrate 300. In addition, a receptacle connector 302 is mounted on the lower surface of the substrate 300 at the center in the vertical direction at the right end. The receptacle connector 302 is electrically connected to the LED 301 via a conductor formed on the substrate 300, and is detachably connected to a plug connector connected to an output line from the power supply device 4.

  The reflective member 31 is configured by forming a reflective layer made of a material having a relatively high reflectance on the surface (lower surface) of a sheet material made of an insulating material such as synthetic rubber or synthetic resin. A plurality of through holes 310 are formed in the reflecting member 31 at positions corresponding to the LEDs 301 mounted on the substrate 300. The reflecting member 31 is disposed so as to be in contact with the entire lower surface of the substrate 300, and in a state where the reflecting member 31 is disposed so as to be superimposed on the substrate 300, the reflecting member 31 corresponds to the through hole 310 of the reflecting member 31. The LED 301 is exposed. In the state where the reflecting member 31 is placed on the substrate 300, the light directly incident on the reflecting member 31 from the LED 301 or the light reflected or refracted inside the optical member 32 and incident on the reflecting member 31 is reflected. Reflected downward by the member 31. In addition, it is preferable that the reflection member 31 is affixed on the upper surface of the optical member 32 using the transparent double-sided tape which has translucency. Alternatively, the reflecting member 31 may be attached and fixed to the lower surface of the substrate 300. Furthermore, the reflecting member 31 may be fixed to the optical member 32 or the substrate 300 by a method other than the attachment with the double-sided tape.

  The optical member 32 is formed by integrally molding a plurality of (the same number of LEDs 301) lenses 320 and an engaging portion 321 that couples the plurality of lenses 320 with a synthetic resin (for example, acrylic resin) having translucency. It is configured. The optical member 32 is affixed and fixed to the lower surface of the reflecting member 31 using a double-sided tape.

  The light source unit 3 is attached to the lower surface of the mounting plate 5 by screwing. The mounting plate 5 is provided with a rectangular plate-like side wall 50 over the entire circumference. The mounting plate 5 has a mounting bracket 51 screwed to the center in the front-rear direction at both left and right ends. A power supply device 4 and a wireless communication device 6 are attached to the upper surface of the attachment plate 5.

  The power supply device 4 includes a power supply circuit configured by mounting electronic components on a printed wiring board, and a case 42 that houses the power supply circuit. A circuit diagram of the power supply circuit is shown in FIG. The power supply circuit includes an input connector 400, a filter circuit 401, a rectifier 402, a step-up circuit 403, a step-down circuit 404, an output connector 405, a main control circuit 406, a control power supply circuit 407, a dimming control circuit 408, a turn-off control circuit 409, a control Connector 410 and the like.

  The input connector 400 is electrically connected to an external power source (commercial AC power source) 9 via the terminal block 16. The filter circuit 401 includes a common mode choke coil 4010 and an across-the-line capacitor 4011. The rectifier 402 is configured by a diode bridge, and the external power supply 9 and the AC input terminal are electrically connected via the filter circuit 401 and the input connector 400, and full-wave rectification is performed on the AC voltage / AC current supplied from the external power supply 9. And output from the DC output terminal.

  The step-up circuit 403 is a conventionally known step-up chopper circuit (power factor correction circuit) including a choke coil L1, a switching element Q1, a rectifying element D1, a smoothing capacitor C1, and the like. The step-down circuit 404 is a conventionally known step-down chopper circuit (buck converter) that includes a switching element Q2, an inductor L2, a rectifying element D2, a resistor R1, a smoothing capacitor C2, and the like. The pulsating voltage output from the rectifier 402 is boosted by the booster circuit 403, and the DC voltage output from the booster circuit 403 is stepped down by the step-down circuit 404. The output connector 405 is a receptacle connector and is electrically connected to the output terminals (both ends of the smoothing capacitor C2) of the step-down circuit 404.

  The main control circuit 406 switches the switching element Q1 of the step-up circuit 403 and the switching element Q2 of the step-down circuit 404 to maintain the output voltage of the step-up circuit 403 constant and match the output current of the step-down circuit 404 to the target value. Configured to let The control power supply circuit 407 is configured to generate a control voltage (for example, a DC voltage of about 5V to 3V) from the output voltage of the booster circuit 403. The main control circuit 406 operates with the control voltage supplied from the control power supply circuit 407.

  The control connector 410 is a receptacle connector, and the plug connector 63 (see FIG. 5) of the wireless communication device 6 is plugged in and connected. As will be described later, a control signal output from the wireless communication device 6 is input to the dimming control circuit 408 and the turn-off control circuit 409 via the control connector 410.

  The turn-off control circuit 409 is configured to generate a turn-off signal for turning off the LED module 30 that is turned on in accordance with the control signal, and to output to the main control circuit 406. When the main control circuit 406 receives the turn-off signal, the main control circuit 406 is configured to stop the switching of the switch element Q2, stop the step-down circuit 404, and turn off the LED module 30. However, when receiving the turn-off signal, the main control circuit 406 may stop the switching of the switching element Q1 as well as the switching element Q2 and stop both the booster circuit 403 and the step-down circuit 404. If both the booster circuit 403 and the step-down circuit 404 are stopped in this way, the power consumption of the power supply device 4 during turn-off is reduced as compared with the case where only the step-down circuit 404 is stopped.

  In addition, the dimming control circuit 408 is configured to generate a dimming signal instructing the light output (dimming level) of the LED module 30 and output it to the main control circuit 406 in accordance with the control signal. The dimming level is the ratio (%) of the average power per unit time supplied to the LED module 30 to the rated power when the light output of the LED module 30 when the rated power is supplied is 100%. It is represented by For example, when the average power per unit time supplied to the LED module 30 is half of the rated power, the dimming level is 50%. In other words, if the dimming level indicated by the control signal is 50%, the dimming control circuit 408 halves the average power per unit time supplied from the step-down circuit 404 to the LED module 30 to the rated power. A dimming signal is generated that instructs The main control circuit 406 is preferably configured to adjust the on-duty ratio of the switch element Q2 in accordance with the dimming signal received from the dimming control circuit 408. More specifically, the dimming control circuit 408 detects the output current of the step-down circuit 404 from the voltage across the resistor R1, and adjusts the average value of the output current to a target value corresponding to the dimming level. It is preferably configured to generate an optical signal.

  The printed wiring board is configured by forming a wiring conductor (copper foil) on the back surface of a long rectangular flat insulating substrate. A so-called lead component such as a connector, a smoothing capacitor, or a common mode choke coil 4010 is mounted on the surface of the printed wiring board. And the surface mounting components which comprise the rectifier 402, the main control circuit 406, the light control circuit 408, the light extinction control circuit 409, etc. are mounted on the back surface of the printed wiring board.

  As shown in FIG. 1, the case 42 is formed in a long box shape from a metal plate. The power supply device 4 is attached to the attachment plate 5 by screwing both ends of the case 42 in the longitudinal direction to the upper surface of the attachment plate 5. The power supply device 4 is attached to the mounting plate 5 at a position slightly to the right from the center in the left-right direction of the mounting plate 5 with the longitudinal direction of the case 42 aligned with the front-rear direction (see FIG. 1).

  As shown in FIG. 5, the wireless communication device 6 includes a circuit block 60, a housing 61, a signal cable 62, a plug connector 63, and the like. The circuit block 60 includes a circuit board 60A and a circuit cover 60B. Further, as shown in FIG. 4, the circuit block 60 includes an antenna 600, a wireless communication circuit 601, a wireless control circuit 602, an optical communication circuit 603, a photocoupler 604, resistors R2 and R3, a signal output unit 605, and the like. Yes. The circuit board 60A is divided into a first area 60AA and a second area (see FIG. 5). A conductor constituting the antenna 600 is formed in the first region 60AA. In the second region, a wireless communication circuit 601, a wireless control circuit 602, an optical communication circuit 603, a photocoupler 604, resistors R2 and R3, a signal output unit 605, and the like are mounted except for the antenna 600. The circuit cover 60B is formed in a box shape with a material that blocks electromagnetic waves, for example, a metal plate such as a copper plate or an aluminum plate, and is attached to the circuit board 60A so as to cover the second region.

  The wireless communication circuit 601 is configured to receive a wireless signal received by the antenna 600, for example, a wireless signal using a 920 MHz band radio wave as a medium, and acquire a control command from the wireless signal. The wireless signal is transmitted from the transmitter and transmits a control command for turning on / off the lighting fixture X, adjusting the dimming level, and the like. The wireless communication circuit 601 outputs a control command acquired from the wireless signal to the wireless control circuit 602. The radio control circuit 602 is constituted by, for example, a microcontroller. The wireless control circuit 602 generates a control signal for transmitting the control command received from the wireless communication circuit 601. The wireless control circuit 602 is electrically connected to a pair of signal lines through which control signals are transmitted. The radio control circuit 602 is electrically connected in series with the input terminal of the photocoupler 604 and a current limiting resistor R2. That is, a control signal transmitted to the signal line is input to the input terminal of the photocoupler 604 via the wireless control circuit 602.

  The signal output unit 605 is electrically connected to the control connector 410 of the power supply device 4 via the signal cable 62. The signal cable 62 is composed of three electric wires 62A to 62C. The ground of the power supply device 4 and the output terminal (emitter of the phototransistor) on the negative electrode side of the photocoupler 604 are electrically connected by a single electric wire 62A. Further, the connection point between the output terminal of the control power supply circuit 407 and one end of the resistor R3 is electrically connected by the other one electric wire 62B. Further, the connection point between the other end of the resistor R3 and the output terminal (phototransistor collector) on the positive side of the photocoupler 604 is electrically connected to the dimming control circuit 408 and the turn-off control circuit 409 with the remaining one electric wire 62C. Is done. That is, a constant control power supply voltage is always applied to the series circuit of the resistor R3 and the phototransistor. Therefore, the control signal input to the dimming control circuit 408 and the extinguishing control circuit 409 is low level when the input voltage of the photocoupler 604 is high level, and high level when the input voltage of the photocoupler 604 is low level. It becomes. For example, it is assumed that the control signal generated by the wireless control circuit 602 is a pulse width modulation (PWM) signal. In this case, the radio control circuit 602 may set the duty ratio of the control signal to 95% when the dimming level of the control command is 100%, and decrease the duty ratio as the dimming level becomes lower (darker). The dimming control circuit 408 may set the dimming level to 100% when the duty ratio of the control signal transmitted from the wireless control circuit 602 is 95% and decrease the dimming level as the duty ratio decreases. Further, the turn-off control circuit 409 may output a turn-off signal when the duty ratio of the control signal is a lower limit value (for example, 10%) or less.

  The optical communication circuit 603 is configured to perform wireless communication using infrared as a medium. That is, the optical communication circuit 603 receives (receives) an infrared signal by the light receiving element 603A mounted in the second region of the circuit board 60A, and outputs setting information acquired from the received infrared signal to the wireless control circuit 602. It is configured as follows. The setting information is, for example, unique identification information assigned to a transmitter that is a transmission source of a radio signal (radio wave). The wireless control circuit 602 stores the setting information received from the optical communication circuit 603 in a memory built in the microcontroller. The wireless communication circuit 601 acquires not only the control command but also the identification information of the transmission source transmitter from the wireless signal received by the antenna 600 and outputs it to the wireless control circuit 602. When the identification information received from the wireless communication circuit 601 matches the identification information stored (registered) in the memory, the wireless control circuit 602 generates a control signal for transmitting the control command received from the wireless communication circuit 601. To do. On the other hand, if the identification information received from the wireless communication circuit 601 does not match the identification information stored in the memory, the wireless control circuit 602 discards the control command received from the wireless communication circuit 601 and does not generate a control signal. . That is, even if the wireless communication circuit 601 can receive wireless signals from a plurality of transmitters, the wireless control circuit 602 accepts only a control command transmitted from a specific transmitter in which identification information is registered in advance. It is configured.

  As shown in FIG. 5, the housing 61 includes a body 610 and a cover 611. The body 610 is composed of a box-shaped synthetic resin molded body having one surface (lower surface) opened. The body 610 is provided with an insertion groove 6100 through which the signal cable 62 is inserted in one of the two side walls facing in the short direction. The body 610 has two female screw portions 6101. Further, the body 610 is provided with a pair of hooking holes 6102 arranged in the lateral direction on two side walls opposed in the longitudinal direction.

  The cover 611 includes a roughly rectangular plate-shaped lid body 6110, two pairs of fixed legs 6111, and an antenna housing portion 6112. The fixed legs 6111 are formed so as to protrude upward from both ends along the short direction of the lid body 6110. Note that hooking claws 61110 projecting outward are provided at the tips (upper ends) of the two pairs of fixed legs 6111. The antenna housing portion 6112 has a substantially flat rectangular box shape, and protrudes downward from the lower surface of the lid body 6110 and is formed integrally with the lid body 6110 so as to open to the upper surface of the lid body 6110. In addition, a through hole 6113 that penetrates in the thickness direction (vertical direction) of the lid body 6110 is provided at an end portion in the longitudinal direction of the antenna housing portion 6112.

  The body 610 and the cover 611 are joined by the two pairs of fixed legs 6111 of the cover 611 being hooked on the four hooking holes 6102 of the body 610 (see FIG. 6). In the circuit block 60, the second area of the circuit board 60A to which the circuit cover 60B is attached is accommodated in the body 610, and the first area 60AA (antenna 600) of the circuit board 60A is accommodated in the antenna accommodating part 6112. (See FIG. 8). Note that the through-hole 6113 of the cover 611 faces the light receiving portion 603AA of the light receiving element 603A mounted in the second region of the circuit board 60A. That is, the infrared signal transmitted from the setting device is received (received) by the light receiving element 603A through the through hole 6113 of the housing 61 (cover 611).

  The wireless communication device 6 is fixed to the upper surface of the mounting plate 5 via a fixing bracket 64 (see FIGS. 6 and 7). The fixture 64 is made of a rectangular metal plate. The fixing metal 64 is provided with round holes 640 penetrating in the plate thickness direction (vertical direction) at both ends in the longitudinal direction. In addition, the fixing metal 64 is provided with an insertion hole 641 through which the antenna 600 (antenna housing portion 6112) of the wireless communication device 6 is inserted. Further, the fixing metal 64 is provided with two screw insertion holes 642 at the edge of the insertion hole 641. The housing 61 of the wireless communication device 6 includes two female screw portions of the housing 61 each having two screws inserted through the two screw insertion holes 642 in a state where the antenna housing portion 6112 is inserted through the insertion hole 641. It is fixed to the fixture 64 by being screwed into 6101. The fixing fitting 64 is fixed to the upper surface of the mounting plate 5 by screwing screws inserted into the two round holes 640 into the screw holes 52 provided in the mounting plate 5 (see FIG. 1 and FIG. 1). (See FIG. 6). Here, the mounting plate 5 is provided with a slit 53 through which the antenna 600 (antenna accommodating portion 6112) of the wireless communication device 6 is inserted (see FIGS. 1 and 6). The slit 53 is provided at a position sandwiched between two LED modules 30 adjacent in the front-rear direction on the left side of the mounting plate 5 among the four LED modules 30 mounted on the mounting plate 5 (FIG. 1). reference). The slit 53 has a long rectangular shape with the left-right direction as the longitudinal direction, and the length in the longitudinal direction is formed to be one-half or more of the wavelength of the radio wave serving as the medium of the radio signal. For example, when the radio wave used for the radio signal is a 920 MHz band radio wave, the wavelength of the radio wave is about 33 [cm], and therefore the length of the slit 53 is preferably about 17 [cm]. The width of the slit 53 (the length in the short direction) may be larger than the thickness of the antenna accommodating portion 6112 of the housing 61 and shorter than the length of the body 610 of the housing 61 in the short direction.

  As shown in FIGS. 1 and 2, the panel unit 7 includes a panel 70, a panel frame 71, four fixing springs 72, and the like. The panel 70 has translucency and is formed in a rectangular flat plate shape. The panel 70 is preferably formed of, for example, an acrylic resin or a polycarbonate resin mixed with a diffusing material.

  The panel frame 71 is formed in a rectangular frame shape. The panel frame 71 is provided with a peripheral wall 710 that rises upward from the upper surface over the entire periphery. The mounting bracket 51 of the mounting plate 5 is screwed to substantially the center in the front-rear direction on both the left and right sides of the peripheral wall 710. That is, the panel frame 71 is coupled to the lighting unit 2 by screwing the peripheral wall 710 to the pair of mounting brackets 51 in a state where the panel 70 and the lighting unit 2 are housed inside the peripheral wall 710.

  Each of the four fixed springs 72 is a torsion coil spring made of a metal wire. The four fixed springs 72 each have a coil 720 and a pair of arms 721 extending in directions away from both ends of the coil 720. However, the tip portions of the pair of arms 721 are bent substantially at a right angle. Each of these four fixing springs 72 is attached to each of the peripheral walls 710 on both the front and rear sides of the panel frame 71 by four connecting fittings 73 (see FIG. 1).

  In the panel frame 71, the arms 721 of the four fixing springs 72 are inserted into the four holes 1011 of the frame body 10 of the instrument main body 1, respectively, and the pair of arms 721 are caught on the periphery of the hole 1011 by the spring force of the coil 720. Thus, it is attached to the instrument body 1 (see FIG. 3).

  Here, as shown in FIG. 8, the lighting fixture X according to the present embodiment is disposed below the mounting plate 5 by inserting the antenna 600 (antenna housing portion 6112) of the wireless communication device 6 through the slit 53. Has been. Therefore, a radio signal (radio wave) transmitted from the transmitter passes through the panel 70 made of an insulator (synthetic resin) and is received by the antenna 600. Further, since the slit 53 is formed to have a length of one half or more of the wavelength of the radio wave used for the radio signal, the radio signal passes through the slit 53 and reaches the upper side of the mounting plate 5. Furthermore, since the instrument main body 1 (the frame body 10 and the top plate 11) having conductivity exists above the mounting plate 5, the radio wave that has passed through the slit 53 is reflected by the instrument main body 1. A part of the reflected radio wave enters the casing 61 of the wireless communication device 6 and is received by the antenna 600. That is, the luminaire X according to this embodiment can easily receive a radio signal (radio wave) by inserting the antenna 600 of the radio communication device 6 through the slit 53 of the mounting plate 5. Further, since the slit 53 is formed to have a length of one half or more of the wavelength of the radio wave, the radio signal (radio wave) enters the instrument body 1 from the slit 53 and is reflected in the instrument body 1. As a result, the possibility of reception by the antenna 600 increases. Therefore, the luminaire X according to the present embodiment can improve the reception sensitivity as compared with the case where the slit 53 having a length of one-half or more of the wavelength is not provided in the mounting plate 5. Moreover, the lighting fixture X according to the present embodiment can be made of metal for the mounting plate 5 to which the wireless communication device 6 is mounted, so that the mounting plate is made of a material that transmits radio waves (synthetic resin or the like) as in the conventional example. It is not necessary to form 5 and the mechanical strength of the lighting unit 2 can be increased.

  By the way, the lighting fixture X which concerns on this embodiment is provided with the rectangular window hole 12 in the right end in the upper surface of the fixture main body 1. FIG. This window hole 12 is provided in order for the operator's hand who performs construction work to reach the suspension bolt when the instrument body 1 is attached to the suspension bolt. However, there is a possibility that a radio signal (radio wave) that has passed through the slit 53 and entered the instrument main body 1 may escape from the instrument main body 1 through the window hole 12.

  Therefore, in the lighting fixture X according to the present embodiment, the power supply device 4 having the metal case 42 is disposed between the wireless communication device 6 and the window hole 12 on the upper surface of the mounting plate 5. Furthermore, the power supply device 4 and the wireless communication device 6 are mounted on the upper surface of the mounting plate 5 outside the projection range of the window hole 12 as viewed from the vertical direction (see FIG. 3). Therefore, the radio signal (radio wave) that has entered the instrument main body 1 through the slit 53 is reflected by the case 42 of the power supply device 4, and is difficult to come out of the instrument main body 1 through the window hole 12. As a result, the lighting fixture X according to the present embodiment reduces the proportion of the radio signal that passes through the slit 53 and enters the fixture body 1 through the window hole 12 and out of the fixture body 1. The reception sensitivity of the antenna 600 can be improved.

  In addition, in the slit 53, the place where the antenna 600 (antenna accommodating portion 6112) is inserted is preferably near the center in the longitudinal direction of the slit 53. Further, in order to suppress the entry of insects and the like, portions other than the insertion portion of the antenna housing portion 6112 in the slit 53 may be blocked with a plate material formed of a material that transmits radio waves (for example, synthetic resin). preferable.

  As described above, the lighting fixture X according to the present embodiment includes the fixture main body 1 and the lighting unit 2 attached to the fixture main body 1. The lighting unit 2 includes one or a plurality of light source units 3 and a wireless communication device 6 that performs wireless communication using radio waves as a medium. The lighting unit 2 is at least partially made of metal, the light source unit 3 is attached to the front surface (lower surface), and the mounting plate 5 is attached to the back surface (upper surface). have. The instrument body 1 is formed in a box shape having an opening on one surface (lower surface). The wireless communication device 6 includes an antenna 600, a wireless communication circuit 601 that acquires a control command from a wireless signal received by the antenna 600, and a housing 61 that houses the antenna 600 and the wireless communication circuit 601. The mounting plate 5 is provided with a slit 53 having a length of one-half or more of the wavelength of the radio wave and through which the antenna 600 is inserted from the back surface (upper surface) toward the front surface (lower surface). ) In the instrument body 1 in a direction (downward) to face the opening.

  If the lighting fixture X which concerns on this embodiment is comprised as mentioned above, the radio signal which passes the slit 53 and approachs into the fixture main body 1 can be reflected in the fixture main body 1, and can be made to receive in the antenna 600. FIG. In addition, if the slit 53 for passing the radio signal is provided, the mounting plate 5 does not need to be formed only of a material that allows radio waves to pass, such as synthetic resin, and at least a part of the mounting plate 5 is made of metal. It does not matter. As a result, the lighting fixture X according to the present embodiment can increase the mechanical strength (particularly, the mechanical strength of the lighting unit 2) while improving the reception sensitivity.

  Moreover, in the lighting fixture X which concerns on this embodiment, the lighting unit 2 has the power supply device 4 attached to the back surface (upper surface) of the attachment board 5, and supplying the electric power to the light source unit 3, and making it light. preferable. The instrument main body 1 has a cylindrical shape, and a frame body 10 having an opening provided on one end surface (lower surface) of two end surfaces facing each other in the axial direction, and the other end surface (upper surface) of the frame body 10. It is preferable to have the top plate 11 provided in the above. Moreover, it is preferable that the instrument main body 1 is provided with the window hole 12 which is not obstruct | occluded with the top plate 11 in the other end surface (upper surface) of the frame 10. FIG. The power supply device 4 preferably includes a power supply circuit that generates power and a metal case 42 that houses the power supply circuit. The power supply device and the wireless communication device 6 are preferably attached to the back surface (upper surface) of the mounting plate 5 outside the projection range of the window hole 12 as viewed from the normal direction (vertical direction) of the back surface (upper surface). And it is preferable that the radio | wireless communication apparatus 6 is attached to the position far from the power supply device 4 with respect to the window hole 12. FIG.

  If the lighting fixture X which concerns on this embodiment is comprised as mentioned above, the radio signal (radio wave) which passed the slit 53 and entered in the fixture main body 1 will reflect in the case 42 of the power supply device 4, and the window hole 12 It becomes difficult to come out of the instrument main body 1 through. As a result, the lighting fixture X according to the present embodiment reduces the proportion of the radio signal that passes through the slit 53 and enters the fixture body 1 through the window hole 12 and out of the fixture body 1. The reception sensitivity of the antenna 600 can be improved.

X lighting fixture 1 fixture body 2 lighting unit 3 light source unit 4 power supply device 5 mounting plate 6 wireless communication device 12 window hole 42 case 53 slit 600 antenna 601 wireless communication circuit

Claims (2)

An instrument body and a lighting unit attached to the instrument body,
The lighting unit includes one or a plurality of light source units, a wireless communication device that performs wireless communication using radio waves as a medium, at least a part of which is made of metal, and the light source unit is attached to a surface; A mounting plate on which the wireless communication device is mounted on the back surface;
The instrument body is formed in a box shape having an opening on one side,
The wireless communication device includes an antenna, a wireless communication circuit that acquires a control command from a wireless signal received by the antenna, and a housing that houses the antenna and the wireless communication circuit,
The mounting plate is provided with a slit having a length of one-half or more of the wavelength of the radio wave, through which the antenna is inserted from the back surface toward the front surface, and the front surface serving as the opening. A lighting fixture characterized in that the lighting fixture is accommodated in the fixture main body in a facing direction. The lighting unit includes a power supply device that is attached to the back surface of the mounting plate and supplies power to the light source unit to light it.
The instrument main body is cylindrical, and is provided on a frame body in which the opening is provided on one end face of two end faces facing in the axial direction, and on the other end face of the frame body. And the other end face of the frame body is provided with a window hole not closed by the top plate,
The power supply device includes a power supply circuit that generates the power, and a metal case that houses the power supply circuit.
The power supply device and the wireless communication device are attached outside the projection range of the window hole as viewed from the normal direction of the back surface on the back surface of the mounting plate, and the wireless communication device is the window The lighting fixture according to claim 1, wherein the lighting fixture is attached to a position farther from the power supply device than the hole.

Images