JP6548122B2 - lighting equipment - Google Patents

Description

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

  As a prior art example, the LED apparatus of 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 as well. And a mounted antenna. In addition, a wireless receiver connected to the antenna and a power supply for supplying power to the LED and the wireless receiver are accommodated in the housing.

Japanese Patent Publication No. 2015-508563 Publication

  By the way, as for the LED apparatus of patent document 1, in order to raise the receiving sensitivity of an antenna, the housing is formed with nonmetallic materials (for example, synthetic resin). However, if the material for forming the housing for supporting the metal core printed circuit board or the power source is limited to non-metal materials such as synthetic resin, it is easy to increase the mechanical strength of the housing (instrument body). There is a problem that it disappears.

  This invention is made in view of the said subject, and it aims at raising mechanical strength, aiming at the improvement of receiving sensitivity.

  The lighting fixture of the present invention comprises a fixture body, and a lighting unit attached to the fixture body, the lighting unit comprising one or more light source units and a wireless communication device for performing wireless communication using radio waves as a medium. A mounting plate at least a part of which is made of metal, the light source unit is attached to the front surface, and the wireless communication device is attached to the back surface; The wireless communication device includes an antenna, a wireless communication circuit that acquires a control command from a wireless signal received by the antenna, a housing that accommodates the antenna and the wireless communication circuit. And the mounting plate is provided with a slit having a length of a half or more of the wavelength of the radio wave and 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 mechanical strength can be increased while improving the reception 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 concerning the embodiment of the present invention. It is a circuit block diagram of the power supply device and radio | wireless communication apparatus in the lighting fixtures which concern on embodiment of this invention. It is a disassembled perspective view of the wireless-communications device in the lighting equipment concerning the embodiment of the present invention. It is the disassembled perspective view which showed the lighting fixture which concerns on embodiment of this invention, and was abbreviate | omitted partially. The lighting fixture which concerns on embodiment of this invention is shown, and it is the top view which abbreviate | omitted the top plate. FIG. 2 is a cross-sectional view of a main part including the wireless communication device, showing the lighting apparatus according to the embodiment of the present invention.

  Hereinafter, a luminaire according to an embodiment of the present invention will be described in detail with reference to the drawings. The configuration described in the following embodiment is merely an example 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 without departing from the technical concept of the present invention. Moreover, in the following description, unless otherwise noted, the directions shown in FIG.

  The lighting fixture X which concerns on this embodiment is provided with the lighting device 2 attached to the fixture main body 1 and the fixture main body 1 so that attachment or detachment is possible, as shown to FIG.1 and FIG.2. Furthermore, the lighting fixture X according to the present embodiment preferably includes the panel unit 7.

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

  The frame 10 has a pair of first side plates 100 facing each other in the left-right direction and a pair of second side plates 101 facing each other 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, at an intermediate portion in the vertical direction of the pair of second side plates 101, a step portion 1010 is provided which extends over the entire length in the horizontal direction. Further, two holes 1011 are formed in the step portion 1010 of the pair of second side plates 101 at an interval in the left-right direction. The holes 1011 are formed across the step 1010 and the upper portion of the second side plate 101. 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. Further, the top plate 11 is provided with an insertion hole 110 through which a power supply line for power supply is inserted. The power supply line inserted into the insertion hole 110 is electrically connected to the terminal block 16 fixed to the lower surface of the top plate 11. Further, in the top plate 11, a plurality of (three in the illustrated example) bolt insertion holes 112 through which the suspension bolts embedded in the housing of the building are inserted are provided in a line in the front-rear direction.

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

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

  The four light source units 3 each include an LED module 30, a reflection member 31, and an optical member 32 (see FIG. 2). The LED module 30 has a substantially square substrate 300 and a plurality of LEDs 301 arranged and mounted in a matrix on one surface (bottom surface) of the substrate 300. Also, on the lower surface of the substrate 300, a receptacle connector 302 is mounted 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 made of an insulating material such as synthetic rubber or synthetic resin. In the reflecting member 31, a plurality of through holes 310 are formed at positions respectively corresponding to the LEDs 301 mounted on the substrate 300. The reflective member 31 is disposed so as to overlap the substrate 300 so as to contact the entire lower surface of the substrate 300, and corresponds to the through holes 310 of the reflective member 31 in a state where the reflective member 31 is disposed so as to overlap the substrate 300. The LED 301 is exposed. Then, in a state where the reflective member 31 is disposed so as to overlap the substrate 300, light directly incident on the reflective member 31 from the LED 301 or light reflected or refracted inside the optical member 32 and incident on the reflective member 31 is reflected The light is reflected downward by the member 31. The reflecting member 31 is preferably attached to the upper surface of the optical member 32 using a transparent double-sided adhesive tape. Alternatively, the reflective 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 affixing with a double-sided tape.

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

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

  The power supply device 4 includes a power supply circuit configured by mounting an electronic component on a printed wiring board, and a case 42 for housing 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 booster 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, control Connector 410 and the like.

  The input connector 400 is electrically connected to an external power supply (commercial AC power supply) 9 through 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 constituted by a diode bridge, 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 of the AC voltage / AC current supplied from the external power supply 9 is performed. Output from the DC output terminal.

  The booster circuit 403 is a conventionally known boost chopper circuit (power factor improvement circuit) which is constituted of a choke coil L1, a switch element Q1, a rectifier element D1, a smoothing capacitor C1 and the like. The step-down circuit 404 is a well-known step-down chopper circuit (buck converter) including a switch element Q2, an inductor L2, a rectifying element D2, a resistor R1, a smoothing capacitor C2, and the like. The pulsating current 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 terminal (both ends of the smoothing capacitor C2) of the step-down circuit 404.

  The main control circuit 406 switches the switch element Q1 of the booster circuit 403 and the switch 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 a target value. Configured to The control power supply circuit 407 is configured to generate a control voltage (for example, a DC voltage of about 5 V to 3 V) 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 inserted and connected. As described later, a control signal output from the wireless communication device 6 is input to the dimming control circuit 408 and the light-off control circuit 409 via the control connector 410.

  The light-off control circuit 409 is configured to generate a light-off signal for turning off the lighted LED module 30 according to the control signal, and to output the light-off signal to the main control circuit 406. The main control circuit 406 is configured to stop switching of the switch element Q2 to stop the step-down circuit 404 and turn off the LED module 30, when receiving the light-off signal. However, when the main control circuit 406 receives the light-off signal, switching of not only the switch element Q2 but also the switch element Q1 may be stopped to stop both the booster circuit 403 and the step-down circuit 404. As described above, when both the booster circuit 403 and the step-down circuit 404 are stopped, the power consumption of the power supply device 4 in the extinguishing state is reduced as compared with the case where only the step-down circuit 404 is stopped.

  Further, the light adjustment control circuit 408 is configured to generate a light adjustment signal indicating a light output (light adjustment level) of the LED module 30 according to the control signal, and to output the light adjustment signal to the main control circuit 406. The dimming level is the ratio (%) of the average power per unit time supplied to the LED module 30 to the rated power, assuming that the light output of the LED module 30 when the rated power is supplied is 100%. 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, when the dimming level indicated by the control signal is 50%, the dimming control circuit 408 reduces the average power per unit time supplied from the step-down circuit 404 to the LED module 30 to half of the rated power. Generate a dimming signal to indicate. 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 performs dimming so that the average value of the output current matches the target value corresponding to the dimming level. Preferably, it is configured to generate an optical signal.

  The printed wiring board is configured by forming a conductor (copper foil) for wiring on the back surface of a long rectangular flat insulating substrate. So-called lead components such as a connector, a smoothing capacitor, and a common mode choke coil 4010 are mounted on the surface of the printed wiring board. Then, on the back surface of the printed wiring board, surface mounting components constituting the rectifier 402, the main control circuit 406, the light adjustment control circuit 408, the turn-off control circuit 409 and the like are mounted.

  As shown in FIG. 1, the case 42 is formed in a long box shape by a metal plate. The power supply device 4 is attached to the mounting plate 5 by screwing both end portions of the case 42 in the longitudinal direction to the upper surface of the mounting plate 5. The power supply device 4 is attached to the mounting plate 5 at a position slightly to the right of the center of the mounting plate 5 in the left-right direction 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 has 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. There is. The circuit board 60A is divided into a first area 60AA and a second area (see FIG. 5). The conductor which comprises the antenna 600 is formed in 1st area | region 60 AA. In the second area, the wireless communication circuit 601, the wireless control circuit 602, the optical communication circuit 603, the photocoupler 604, the resistors R2 and R3, the signal output unit 605, and the like except the antenna 600 are mounted. The circuit cover 60B is formed in a box shape of 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 obtain a control command from the wireless signal. The wireless signal is transmitted from the transmitter, and transmits a control command for performing lighting / extinguishing of the lighting fixture X, adjustment of the dimming level, and the like. The wireless communication circuit 601 outputs the control command acquired from the wireless signal to the wireless control circuit 602. The wireless control circuit 602 is configured 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. In the radio control circuit 602, the input terminal of the photocoupler 604 and the current limiting resistor R2 are electrically connected in series. That is, the control signal transmitted to the signal line is input to the input terminal of the photocoupler 604 through 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. Then, the ground of the power supply device 4 and the output terminal on the negative electrode side of the photocoupler 604 (the emitter of the phototransistor) are electrically connected by one electric wire 62A. Further, a connection point between the output terminal of the control power supply circuit 407 and one end of the resistor R3 is electrically connected by another single electric wire 62B. Furthermore, the connection point of the other end of the resistor R3 and the output terminal (collector of the phototransistor) on the positive electrode side of the photocoupler 604 is electrically connected to the dimming control circuit 408 and the extinguishing control circuit 409 by the remaining one electric wire 62C. Be 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 becomes 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 wireless 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 may decrease the duty ratio as the dimming level becomes low (dark). 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 may decrease the dimming level as the duty ratio decreases. Further, the turn-off control circuit 409 may output the turn-off signal when the duty ratio of the control signal is equal to or less than the lower limit value (for example, 10%).

  The optical communication circuit 603 is configured to perform wireless communication using infrared light as a medium. That is, the optical communication circuit 603 receives (receives) an infrared signal by the light receiving element 603A mounted on the second area of the circuit board 60A, and outputs setting information acquired from the received infrared signal to the wireless control circuit 602. Is configured as. The setting information is, for example, unique identification information assigned to a transmitter that is a transmission source of a wireless signal (radio wave). The wireless control circuit 602 stores the setting information received from the optical communication circuit 603 in a memory incorporated in the microcontroller. The wireless communication circuit 601 acquires not only the control command but also identification information of the transmitter of the transmission source from the wireless signal received by the antenna 600, and outputs the identification information to the wireless control circuit 602. If 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 a control command received from the wireless communication circuit 601. 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 receives only the control command transmitted from a specific transmitter whose identification information is registered in advance. Is configured.

  The housing 61 includes a body 610 and a cover 611, as shown in FIG. The body 610 is formed of a box-shaped synthetic resin molded body whose one surface (lower surface) is open. In the body 610, an insertion groove 6100 through which the signal cable 62 is inserted is provided on one side wall of two side walls opposed in the short direction. Also, the body 610 has two female screw portions 6101. Further, the body 610 is provided with a pair of hook holes 6102 aligned in the lateral direction on two side walls opposed in the longitudinal direction.

  The cover 611 has a substantially rectangular plate-like lid 6110, two pairs of fixed legs 6111, and an antenna housing portion 6112. The fixing legs 6111 are formed so as to project upward from both ends along the short side direction of the lid 6110, respectively. In addition, hooking claws 61110 protruding 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, protrudes downward from the lower surface of the lid 6110, and is integrally formed with the lid 6110 so as to open at the upper surface of the lid 6110. Further, a through hole 6113 penetrating in the thickness direction (vertical direction) of the lid 6110 is provided at an end of the antenna housing portion 6112 in the longitudinal direction.

  The body 610 and the cover 611 are coupled by the two pairs of fixed legs 6111 of the cover 611 being hooked to the four hook 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 portion 6112. (See Figure 8). The through hole 6113 of the cover 611 is opposed to the light receiving portion 603AA of the light receiving element 603A mounted on the second area 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 the fixing bracket 64 (see FIGS. 6 and 7). The fixing bracket 64 is formed of a rectangular metal plate. The fixing metal fitting 64 has round holes 640 penetrating in the plate thickness direction (vertical direction) at both ends in the longitudinal direction. In addition, the fixing bracket 64 is provided with an insertion hole 641 through which the antenna 600 (the antenna accommodation portion 6112) of the wireless communication device 6 is inserted. Furthermore, in the fixing fitting 64, two screw insertion holes 642 are provided at the edge of the insertion hole 641. The housing 61 of the wireless communication device 6 has two female screw parts of the housing 61, in which two screws inserted in the two screw insertion holes 642 in a state where the antenna housing portion 6112 is inserted in the insertion hole 641. It is fixed to the fixing bracket 64 by being screwed into 6101. The fixing fitting 64 is fixed to the upper surface of the mounting plate 5 by screwing a screw inserted into the two round holes 640 into the screw hole 52 provided in the mounting plate 5 (FIG. 1 and FIG. See Figure 6). Here, the attachment 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 between the two LED modules 30 adjacent to the front and rear direction on the left side of the mounting plate 5 among the four LED modules 30 attached to the mounting plate 5 (FIG. 1) reference). The slit 53 is a long rectangular shape whose longitudinal direction is in the left-right direction, and the length in the longitudinal direction is formed to be half or more of the wavelength of the radio wave serving as the medium of the wireless 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, so the length of the slit 53 is preferably about 17 cm. The width (length in the short direction) of the slit 53 may be larger than the thickness of the antenna accommodating portion 6112 of the housing 61 and shorter than the length in the short direction of the body 610 of the housing 61.

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

  The panel frame 71 is formed in a rectangular frame shape. In addition, the panel frame 71 is provided with a peripheral wall 710 which rises upward from the upper surface over the entire circumference. The mounting bracket 51 of the mounting plate 5 is screwed to substantially the center of the left and right sides of the peripheral wall 710 in the front-rear direction. That is, the panel frame 71 is connected 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.

  The four fixed springs 72 are torsion coil springs each made of a metal wire. The four fixed springs 72 each have a coil 720 and a pair of arms 721 extending away from each other from both ends of the coil 720. However, the distal end portions of the pair of arms 721 are bent substantially at right angles. The four fixing springs 72 are attached two by two to the peripheral walls 710 on the front and rear sides of the panel frame 71 by four connection fittings 73 (see FIG. 1).

  In the panel frame 71, the arms 721 of the four fixing springs 72 are respectively inserted into the four holes 1011 of the frame 10 of the instrument main body 1, and the pair of arms 721 are caught around the hole 1011 by the spring force of the coil 720. Are 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 the antenna 600 (the antenna housing portion 6112) of the wireless communication device 6 being inserted into the slit 53. It is done. Therefore, a radio signal (radio wave) transmitted from the transmitter is transmitted through the panel 70 made of an insulator (synthetic resin) and received by the antenna 600. In addition, since the slit 53 is formed to have a length of half or more of the wavelength of the radio wave used for the wireless signal, the wireless signal passes through the slit 53 and reaches the upper side of the mounting plate 5. Furthermore, since the instrument body 1 (the frame 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 to the instrument body 1. Then, a part of the reflected radio wave enters the housing 61 of the wireless communication device 6 and is received by the antenna 600. That is, when the antenna 600 of the wireless communication device 6 is inserted into the slit 53 of the mounting plate 5, the lighting fixture X according to the present embodiment can easily receive a wireless signal (radio wave). Furthermore, since the slit 53 is formed to be a half or more of the wavelength of the radio wave, the radio signal (radio wave) enters the inside of the instrument body 1 through the slit 53 and is reflected in the instrument body 1 Thus, the possibility of being received by the antenna 600 is increased. Therefore, compared with the case where the slit 53 of the half or more of the wavelength is not provided in the attachment plate 5, the lighting fixture X which concerns on this embodiment can aim at the improvement of receiving sensitivity. Moreover, since the lighting fixture X according to this embodiment can be made of metal from the mounting plate 5 to which the wireless communication device 6 is attached, the mounting plate is made of a material (such as synthetic resin) that transmits radio waves 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, as for the lighting fixture X which concerns on this embodiment, the rectangular window hole 12 is provided in the right end in the upper surface of the fixture main body 1. FIG. The window hole 12 is provided to allow the operator's hand performing the construction work to reach the suspension bolt when the tool body 1 is attached to the suspension bolt. However, there is a possibility that a radio signal (radio wave) which has passed through the slit 53 and entered the inside of the tool body 1 may come out of the tool body 1 through the window hole 12.

  Therefore, in the lighting fixture X according to the present embodiment, the power supply device 4 having a 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 attached on the upper surface of the mounting plate 5 outside the projection range of the window hole 12 viewed from the vertical direction (see FIG. 3). Therefore, the radio signal (radio wave) that has passed through the slit 53 and entered the inside of the tool body 1 is reflected by the case 42 of the power supply device 4 and becomes difficult to escape out of the tool body 1 through the window hole 12. As a result, the lighting fixture X according to the present embodiment reduces the ratio of the wireless signal passing through the window hole 12 to the outside of the fixture body 1 to the wireless signal entering the fixture body 1 through the slit 53, The reception sensitivity of the antenna 600 can be improved.

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

  As described above, the lighting fixture X according to the present embodiment includes the fixture body 1 and the lighting unit 2 attached to the fixture body 1. The lighting unit 2 includes one or more light source units 3 and a wireless communication device 6 that performs wireless communication using radio waves as a medium. Further, at least a part of the lighting unit 2 is made of metal, and the mounting plate 5 has the light source unit 3 attached to the front surface (lower surface) and the wireless communication device 6 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 has a half 53 or more of the wavelength of the radio wave and is provided with a slit 53 through which the antenna 600 is inserted from the back surface (upper surface) to the front surface (lower surface). ) Is accommodated in the instrument body 1 in a direction (downward) to face the opening.

  If the lighting fixture X according to the present embodiment is configured as described above, the wireless signal that passes through the slit 53 and enters the inside of the fixture body 1 can be reflected by the fixture body 1 and can be received by the antenna 600. Moreover, if the slits 53 for passing the wireless signal are provided, the mounting plate 5 does not have to be formed only with a material that transmits radio waves 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 mechanical strength (in particular, 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 is attached to the back surface (upper surface) of the attachment plate 5, and has the power supply device 4 which supplies electric power to the light source unit 3 and makes it light. preferable. The instrument body 1 is cylindrical, and has a frame 10 provided with an opening at one end face (bottom face) of two end faces opposed in the axial direction, and the other end face (top face of the frame 10 It is preferable to have the top plate 11 provided in. Moreover, it is preferable that the tool main body 1 is provided with the window hole 12 which is not closed by the top plate 11 in the other end surface (upper surface) of the frame 10. The power supply device 4 preferably includes a power supply circuit that generates electric power and a metal case 42 that houses the power supply circuit. It is preferable that the power supply device and the wireless communication device 6 be attached on the back surface (upper surface) of the mounting plate 5 outside the projection range of the window hole 12 viewed from the normal direction (vertical direction) of the back surface (upper surface). And, it is preferable that the wireless communication device 6 be attached to a position farther from the window hole 12 than the power supply device 4.

  If the lighting fixture X according to the present embodiment is configured as described above, the wireless signal (radio wave) that has passed through the slit 53 and entered the inside of the fixture main body 1 is reflected to the case 42 of the power supply device 4 and the window hole 12 It becomes difficult to get out of the instrument body 1 through the. As a result, the lighting fixture X according to the present embodiment reduces the ratio of the wireless signal passing through the window hole 12 to the outside of the fixture body 1 to the wireless signal entering the fixture body 1 through the slit 53, 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 unit 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 more light source units, a wireless communication device that performs wireless communication using radio waves as a medium, and at least a part of a metal, and the light source unit is attached to the surface, And a mounting plate to which the wireless communication device is attached on the back side,
The device body is formed in a box shape having an opening on one side,
The wireless communication apparatus includes an antenna, a wireless communication circuit that acquires a control command from a wireless signal received by the antenna, and a housing that accommodates the antenna and the wireless communication circuit.
The mounting plate is provided with a slit having a length of a half or more of the wavelength of the radio wave and the antenna is inserted from the back surface toward the front surface, and the front surface is the opening A luminaire, wherein the luminaire is accommodated in the fixture body in a facing direction. The lighting unit has a power supply device attached to the back surface of the mounting plate to supply power to the light source unit to light it.
The device body is cylindrical, and is provided on a frame body provided with the opening at one end face of two end faces opposed in the axial direction, and the other end face of the frame The other end face of the frame has a top plate, and a window hole not blocked by the top plate is provided,
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 on the back surface of the mounting plate outside the projection range of the window hole as viewed from the normal direction of the back surface, and the wireless communication device includes the window The luminaire according to claim 1, wherein the luminaire is mounted at a position farther than the power supply device with respect to the hole.

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