JP2018107028A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress reduction in wireless communication performance.SOLUTION: A lighting fixture 1 includes: a fixture body 10 being a metal fixture body 10 on the center of which a through hole 15a is formed, and having an annular placing surface 13 on which a light emission module 20 is placed so as to surround the through hole 15a; and a wireless communication module 100 receiving control signals for controlling the light emitting module 20 by performing wireless communication. The fixture body 10 includes an inner peripheral area 10a on the side of the through hole 15a, an outer peripheral area 10b on the outer peripheral side and a center area 10c located between the inner peripheral area 10a and the outer peripheral area 10b, when seeing the placing surface 13 in a plan view. The wireless communication module 100 is placed in the center area 10c.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a lighting fixture having a wireless communication function.

  Conventionally, lighting fixtures having a wireless communication function are known. For example, Patent Literature 1 discloses a ceiling light equipped with a wireless communication device connected to a home energy management system.

JP 2014-150032 A

  The conventional lighting apparatus has a problem that the wireless communication performance is deteriorated due to the influence of the metal casing.

  Then, an object of this invention is to provide the lighting fixture which can suppress the fall of wireless communication performance.

  In order to achieve the above object, a lighting fixture according to an aspect of the present invention is a metal fixture body provided with a through hole in the center, and has an annular shape on which a light emitting unit is placed so as to surround the through hole. When the instrument body has a placement surface and a wireless communication module that receives a control signal for controlling the light emitting unit by performing wireless communication, the instrument body is a plan view of the placement surface An inner peripheral region on the through-hole side, an outer peripheral region on the outer peripheral side, and a central region located between the inner peripheral region and the outer peripheral region, and the wireless communication module is disposed in the central region. Has been placed.

  According to the lighting apparatus according to the present invention, it is possible to suppress a decrease in wireless communication performance.

It is a perspective view which shows the external appearance by the side of the floor surface of the lighting fixture which concerns on embodiment. It is a perspective view which shows the external appearance of the ceiling side of the lighting fixture which concerns on embodiment. It is a perspective view of the lighting fixture which concerns on embodiment in the state which removed the outer cover. It is a disassembled perspective view of the lighting fixture which concerns on embodiment. It is sectional drawing of the lighting fixture which concerns on embodiment in the VV line | wire of FIG. It is an expanded sectional view of the lighting fixture which concerns on embodiment which expands and shows the area | region VI of FIG. It is a top view for demonstrating the positional relationship of the opening and the light emitting module in which the radio | wireless communication module which concerns on embodiment is inserted. It is a perspective view which shows the external appearance of the radio | wireless communication module which concerns on embodiment. It is a disassembled perspective view of the radio | wireless communication module which concerns on embodiment. It is a three-view figure of the resin case of the radio | wireless communication module which concerns on embodiment. It is a perspective view for demonstrating the attachment to the instrument main body of the radio | wireless communication module which concerns on embodiment. It is a top view for demonstrating the position of the radio | wireless communication module which concerns on embodiment. It is a figure which shows the antenna characteristic in the horizontal surface of the radio | wireless communication module which concerns on Example 1. FIG. It is a figure which shows the antenna characteristic in the horizontal surface of the radio | wireless communication module which concerns on Example 2. FIG. 6 is a plan view showing an arrangement of wireless communication modules according to Comparative Example 1. FIG. It is a figure which shows the antenna characteristic in the horizontal surface of the radio | wireless communication module which concerns on the comparative example 1. FIG. 10 is a plan view showing an arrangement of wireless communication modules according to Comparative Example 2. FIG. It is a figure which shows the antenna characteristic in the horizontal surface of the radio | wireless communication module which concerns on the comparative example 2. FIG.

  Below, the lighting fixture which concerns on embodiment of this invention is demonstrated in detail using drawing. Each of the embodiments described below shows a specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a mimetic diagram and is not necessarily illustrated strictly. Therefore, for example, the scales and the like do not necessarily match in each drawing. Moreover, in each figure, the same code | symbol is attached | subjected about the substantially same structure, The overlapping description is abbreviate | omitted or simplified. Further, in the following embodiments, expressions using “substantially” such as substantially parallel or substantially vertical are used. For example, substantially parallel means not only that it is completely parallel, but also that it is substantially parallel, i.e. includes a difference of, for example, a few percent. The same applies to expressions using other “abbreviations”.

  In the present specification and drawings, the x axis, the y axis, and the z axis indicate the three axes of the three-dimensional orthogonal coordinate system. In each embodiment, the z-axis direction is the vertical direction, and the direction perpendicular to the z-axis (the direction parallel to the xy plane) is the horizontal direction. Note that the positive direction of the z-axis is vertically downward.

(Embodiment)
[Overview]
First, the outline | summary of the lighting fixture 1 which concerns on embodiment is demonstrated using FIGS. 1-4.

  FIG. 1 is a perspective view showing an appearance of the floor surface side of the lighting fixture 1 according to the present embodiment. FIG. 2 is a perspective view showing an appearance on the ceiling side of the lighting fixture 1 according to the present embodiment. FIG. 3 is a perspective view of the luminaire 1 according to the present embodiment with the outer cover 70 removed. FIG. 4 is an exploded perspective view of the lighting fixture 1 according to the present embodiment.

  The lighting fixture 1 shown by FIGS. 1-4 is installed in the construction material of buildings, such as a house, for example. As an example, the lighting fixture 1 is a ceiling light fixed to the ceiling of a building, and illuminates a space inside the building. Specifically, the luminaire 1 is installed on the ceiling by being attached to a hook ceiling body fixed to the ceiling.

  As shown in FIGS. 1 to 4, the lighting fixture 1 includes a fixture main body 10, a light emitting module (light emitting portion) 20, a light source cover 30, a power supply unit 40, a light guide plate 50, a reflecting member 60, and an outer shell. A cover 70, a decorative cover 80, a device mounting member 90, and a wireless communication module 100 are provided.

  Hereinafter, each component of the lighting fixture 1 will be described in detail with reference to FIGS.

  FIG. 5 is a cross-sectional view of the luminaire 1 according to the present embodiment taken along the line VV in FIG. FIG. 6 is an enlarged cross-sectional view of the lighting fixture 1 according to the present embodiment, showing the region VI of FIG. 5 in an enlarged manner. FIG. 7 is a plan view showing the positional relationship between the opening 14 into which the wireless communication module 100 according to the present embodiment is inserted and the light emitting module 20. In FIG. 7, the light emitting module 20 and the fixture main body 10 (specifically, the first fixture main body 11) are shown among the components included in the lighting fixture 1, and other components are not shown. .

  In each figure, the negative side of the z axis is the ceiling side, and the positive side of the z axis is the floor surface side. Further, for convenience of explanation, in each of the remaining drawings except FIG. 2, the lighting fixture 1 is illustrated in a posture that is upside down from the posture during normal use.

[Equipment body]
The instrument body 10 is a housing for supporting the light emitting module 20. As shown in FIGS. 4-7, the instrument main body 10 has the mounting surface 13 in which the light emitting module 20 is mounted. The instrument body 10 further houses the power supply unit 40 therein. In the present embodiment, the instrument body 10 further supports the light source cover 30, the power supply unit 40, the light guide plate 50, the reflecting member 60, and the decorative cover 80. As shown in FIGS. 5 and 6, the wireless communication module 100 is fixed to the instrument body 10.

  As shown in FIGS. 4 to 6, the instrument main body 10 includes a first instrument main body 11 and a second instrument main body 12. In the present embodiment, the light emitting module 20, the light source cover 30, the light guide plate 50, the reflecting member 60, and the decorative cover 80 are fixed in the positive direction (floor surface side) of the first instrument main body 11 along the z axis. A power supply unit 40 is accommodated in a space constituted by the first instrument body 11 and the second instrument body 12. Further, the wireless communication module 100 is fixed so as to penetrate the first instrument body 11.

  As shown in FIGS. 4 and 7, the first instrument body 11 includes a placement surface 13, an opening 14, a through hole 15 a, and a flange portion 16 a. In the present embodiment, the first instrument body 11 is made of a flat sheet metal, and is formed so that an annular flat plate portion surrounding the through hole 15a protrudes in the positive direction (floor surface side) of the z axis. . The surface on the floor surface side of the protruding portion (flat plate portion) is a mounting surface 13. The shape of the 1st instrument main body 11 is a disk shape by which the through-hole 15a was provided in the center.

  The mounting surface 13 is a main surface on the floor surface side of the first instrument body 11 (the instrument body 10), and is a surface on which the light emitting module 20 is placed and fixed. The mounting surface 13 is provided in a ring shape having a predetermined width over the entire circumference of the through hole 15a so as to surround the through hole 15a. As shown in FIGS. 5 and 6, the mounting surface 13 is located at a position protruding to the light emitting side (the positive side of the z axis) from the flange portion 16 a provided annularly along the outer periphery thereof. .

  The opening 14 penetrates the mounting surface 13 as shown in FIGS. The opening 14 is an opening for inserting the wireless communication module 100 and penetrates the first instrument body 11 in the thickness direction. The wireless communication module 100 is inserted into the opening 14 in a posture that is substantially perpendicular to the placement surface 13.

  As shown in FIG. 7, the opening 14 is a slit having a long plan view shape. The longitudinal direction (y-axis direction) of the opening 14 in plan view intersects the radial direction and the circumferential direction of the mounting surface 13. For example, the longitudinal direction of the opening 14 intersects the radial direction of the placement surface 13 (specifically, the imaginary line L1) at an angle of about 45 °. The longitudinal direction of the opening 14 intersects with the circumferential direction of the placement surface 13 (specifically, the tangential direction of the imaginary lines L11 to L13) at an angle of about 45 °.

  The through-hole 15a is a hole for exposing an instrument attachment member 90 for attachment to a hooking sealing body provided on the ceiling when the outer cover 70 is removed as shown in FIG. The plan view shape of the through hole 15a is, for example, a racetrack shape that is long in a predetermined direction, but is not limited thereto. Since the fixture mounting member 90 is exposed on the floor surface side, the operation lever for removal provided in the fixture mounting member 90 can be easily operated, and the lighting fixture 1 can be detached from the ceiling surface.

  The first instrument body 11 also functions as a reflection cover for reflecting light from the light emitting module 20. Further, the first instrument body 11 also functions as a heat sink for radiating heat from the light emitting module 20.

  The first instrument body 11 is made of metal and is formed using a metal material. The first instrument body 11 is formed into a predetermined shape by, for example, pressing a sheet metal such as an aluminum plate or a steel plate. On one surface (mounting surface 13) of the first instrument body 11, a white paint is applied or a reflective metal material is deposited in order to improve reflectivity and improve light extraction efficiency. Also good.

  The 2nd instrument main body 12 has the through-hole 15b, the flange part 16b, and the arrangement | positioning surface 17, as shown in FIG.2 and FIG.4. In the present embodiment, the second instrument body 12 is made of a flat sheet metal, and an annular portion (flange portion 16b) along the outer peripheral portion projects in the positive direction (floor surface side) of the z axis. It is formed as follows. The front view shape of the second instrument body 12 is a disc shape with a through hole 15b provided in the center.

  As shown in FIG. 2, an instrument mounting member 90 is inserted into the through hole 15b. The shape of the through hole 15b is, for example, a circle. As shown in FIGS. 3 and 4, a holder 91 for mounting the second instrument main body 12 on the instrument mounting member 90 is fixed to the peripheral edge of the through hole 15 b on the arrangement surface 17 side. An instrument mounting member 90 is detachably fitted inside the holder 91.

  The flange portion 16 b is provided in an annular shape over the entire circumference so as to surround the arrangement surface 17. A flange portion 16a of the first instrument body 11 is attached to the flange portion 16b and fixed by screwing.

  The arrangement surface 17 is a surface in the positive direction (floor surface side) of the z axis of the second instrument body 12 and is a surface on which the power supply unit 40 is disposed. An insulating case 43 of the power supply unit 40 is fixed to the arrangement surface 17. The circuit board 41 of the power supply unit 40 is fixed inside the insulating case 43.

  Further, as shown in FIGS. 2, 5, and 6, a plurality of cushion members 18 such as urethane are provided on the ceiling side surface of the second instrument body 12 (the back side of the arrangement surface 17). The plurality of cushion members 18 are arranged at equal intervals along the circumferential direction of the second instrument body 12. When the lighting fixture 1 is installed on the ceiling, the plurality of cushion members 18 are sandwiched between the fixture main body 10 (second fixture main body 12) and the ceiling, thereby suppressing the wobbling of the lighting fixture 1. .

  The second instrument body 12 is made of metal and is made of a metal material. The 2nd instrument main body 12 is shape | molded by the predetermined shape, for example by pressing a sheet metal, such as an aluminum plate or a steel plate. In the present embodiment, the first instrument body 11 and the second instrument body 12 are made of the same metal material.

  Although detailed description is omitted, a screw hole into which a mounting screw for fixing the light emitting module 20 and the light source cover 30 is inserted in the mounting surface 13 of the first instrument body 11, and the light guide plate 50. A screw hole or the like into which a mounting screw for fixing the reflecting member 60 and the decorative cover 80 is inserted is provided. The arrangement surface 17 of the second instrument body 12 is provided with a screw hole into which a mounting screw for fixing the power supply unit 40 and the holder 91 is inserted. In addition, an attachment screw for fixing the first instrument body 11 and the second instrument body 12 is inserted into the flange part 16a of the first instrument body 11 and the flange part 16b of the second instrument body 12, respectively. Screw holes are provided.

[Light Emitting Module (Light Emitting Unit)]
The light emitting module 20 is an example of a light emitting unit attached to the fixture body 10 of the lighting fixture 1 and emits light of a predetermined color (wavelength) such as white. The light emitting module 20 emits light mainly forward (toward the floor). The light emitting module 20 is mounted on the mounting surface 13 of the first instrument body 11.

  In the present embodiment, a plurality of light emitting modules 20 are provided. That is, the light emitting unit of the lighting fixture 1 includes a plurality of light emitting modules 20. Specifically, as illustrated in FIGS. 4 and 7, the lighting fixture 1 includes three light emitting modules 20 as light emitting units. The three light emitting modules 20 are arranged adjacent to each other so as to have an annular shape (doughnut shape). The three light emitting modules 20 have the same configuration. In addition, the lighting fixture 1 may be provided with one ring-shaped light emitting module as a light emission part.

  As shown in FIGS. 4 and 7, each of the plurality of light emitting modules 20 includes a light source substrate 21, a plurality of first light emitting elements 22, and a plurality of second light emitting elements 23.

  The light source substrate 21 is a mounting substrate for mounting the plurality of first light emitting elements 22 and the plurality of second light emitting elements 23. The light source substrate 21 is, for example, a printed wiring board, and a metal wiring pattern is formed in a predetermined shape on one surface of the light source substrate 21. As shown in FIGS. 6 and 7, the light source substrate 21 is placed on the placement surface 13 of the first instrument body 11 so that the first light emitting element 22 and the second light emitting element 23 face the floor surface side. It is placed. The planar view shape of the light source substrate 21 is, for example, a shape obtained by dividing a donut shape having a predetermined width into three equal parts in the circumferential direction. The light source substrate 21 is fixed to the mounting surface 13 of the first instrument main body 11 using mounting screws.

  The light source substrate 21 is, for example, a resin substrate made of an insulating resin material, a metal base substrate made of a metal material whose surface is coated with a resin, a ceramic substrate that is a sintered body of a ceramic material, or a glass substrate made of a glass material. It is. The light source substrate 21 is not limited to a rigid substrate, and may be a flexible substrate. A resist film may be formed on the surface of the light source substrate 21 as an insulating film so as to cover the metal wiring.

The plurality of first light-emitting elements 22 and the plurality of second light-emitting elements 23 are packaged surface mount device (SMD) type LED (Light Emitting Diode) elements, respectively. As an example, each of the first light emitting element 22 and the second light emitting element 23 includes a white resin package (container) having a recess, an LED chip (bare chip) primarily mounted on the bottom surface of the recess of the package, And a sealing member sealed in the recess of the package. The sealing member is made of a translucent resin material such as silicone resin. The sealing member may be a phosphor-containing resin containing a wavelength conversion material such as a phosphor. Further, the sealing member may contain a light diffusing material (light scattering particles) such as silica (SiO ₂ ).

  The LED chip is an example of a semiconductor light emitting element that emits light with a predetermined DC power, and is a bare chip that emits monochromatic visible light. The LED chip is, for example, a blue LED chip that emits blue light when energized. In this case, in order to obtain white light, the sealing member contains a yellow phosphor such as YAG (yttrium, aluminum, garnet) that fluoresces using blue light from the blue LED chip as excitation light.

  Thus, each of the 1st light emitting element 22 and the 2nd light emitting element 23 is a BY type white LED element comprised by the blue LED chip and the yellow fluorescent substance. Specifically, the yellow phosphor contained in the sealing member is excited by absorbing a part of the blue light from the blue LED chip and emits yellow light. The emitted yellow light and the blue light that is not absorbed by the yellow phosphor are mixed to generate white light. In this way, white light is emitted from each of the first light emitting element 22 and the second light emitting element 23.

  In the present embodiment, the first light emitting element 22 and the second light emitting element 23 both emit light of the same light color, but may emit light of different light colors. . For example, the first light emitting element 22 may emit daylight white light, and the second light emitting element 23 may emit light bulb light.

  The first light emitting element 22 and the second light emitting element 23 may emit light at the same time, and only one of the first light emitting element 22 and the second light emitting element 23 may emit light. A connection mode (such as a series connection, a parallel connection, or a combination of a combination of a series connection and a parallel connection) in each of the plurality of first light emitting elements 22 and the plurality of second light emitting elements 23 is not particularly limited.

  The plurality of first light emitting elements 22 are mounted on the inner peripheral region on the main surface of the light source substrate 21. Specifically, the plurality of first light emitting elements 22 are arranged in three rows as viewed in the radial direction in the inner peripheral region of the light source substrate 21. In each row, the plurality of first light emitting elements 22 are arranged at intervals in the circumferential direction of the light source substrate 21. More specifically, as shown in FIG. 7, as a whole of the light emitting part, the plurality of first light emitting elements 22 are arranged on three annular virtual lines L11 to L13 arranged concentrically. Yes. Light emitted from the plurality of first light emitting elements 22 passes through the light source cover 30 and the first cover 71 of the outer cover 70 and is emitted to the outside of the lighting fixture 1.

  The plurality of second light emitting elements 23 are mounted on the outer peripheral region on the main surface of the light source substrate 21. The outer peripheral area is an area outside the inner peripheral area. In the outer peripheral region of the light source substrate 21, for example, the plurality of second light emitting elements 23 are arranged in only one row at intervals in the circumferential direction of the light source substrate 21. More specifically, as shown in FIG. 7, the plurality of second light emitting elements 23 as a whole of the light emitting section are arranged on one annular virtual line L20. The light emitted from the plurality of second light emitting elements 23 enters the incident portion 53 of the light guide plate 50, is guided through the light guide plate 50, and is emitted to the outside of the lighting fixture 1.

  Each of the light emitting modules 20 is connected to each other by a connector and a lead wire (not shown). One of the plurality of lead wires is connected to the circuit board 41 of the power supply unit 40, and power for lighting the plurality of first light emitting elements 22 and the plurality of second light emitting elements 23 is supplied from the circuit board 41. The light source substrate 21 is supplied.

  In the present embodiment, the light emitting module 20 may have at least one of a dimming function and a toning function. For example, the light emitting module 20 emits light having a dimming ratio selected from a range of 0% (lights off) to 100% (all lighted). The dimming ratio is an example of a parameter indicating light intensity (irradiance). For example, the light emitting module 20 emits light having a color temperature selected from a range of 2700K to 6500K. The color temperature is an example of a parameter indicating the color of light. The instruction for selecting the dimming ratio and the color temperature is included in the control signal received by the wireless communication module 100.

  The light emitting module 20 may emit each of red light (R), green light (G), and blue light (B) independently. Each light output of the light emitting module 20 may be controlled (RGB control) by a control signal.

[Light source cover]
The light source cover 30 is a translucent cover having translucency. As shown in FIGS. 5 and 6, the light source cover 30 is disposed inside the outer cover 70. The light source cover 30 covers the plurality of first light emitting elements 22 provided in the light emitting module 20. That is, the light emitted from the plurality of first light emitting elements 22 enters the light source cover 30. As shown in FIG. 6, the light source cover 30 does not cover the second light emitting element 23.

  The light source cover 30 transmits light emitted from the plurality of first light emitting elements 22 included in the light emitting module 20. In the present embodiment, the light source cover 30 has a light distribution control function for controlling the light distribution of the light emitted from the plurality of first light emitting elements 22.

  Specifically, as illustrated in FIGS. 3 and 4, the light source cover 30 includes a plurality of lens portions 31. The plurality of lens portions 31 are provided in one-to-one correspondence with the plurality of first light emitting elements 22. Specifically, the plurality of lens portions 31 are concentrically arranged in an annular shape for three rows (for three rounds). For example, the lens unit 31 expands the light distribution angle of light from the corresponding first light emitting element 22. That is, the lens unit 31 has a function of diverging light.

  The light source cover 30 is fixed to the mounting surface 13 of the first instrument main body 11 using mounting screws (not shown) so as to cover the inner peripheral regions of the plurality of light source substrates 21.

  As shown in FIGS. 3, 4, and 6, the light source cover 30 is provided with a through hole 32 for inserting the wireless communication module 100. The through hole 32 is provided at a position near the outer periphery of the light source cover 30. Specifically, the through-hole 32 is formed on the outer two rings among the three virtual rings formed by the plurality of lens units 31. That is, the through hole 32 is formed on the virtual lines L12 and L13 shown in FIG.

  The light source cover 30 is formed using a resin material having translucency. The material of the light source cover 30 is, for example, acrylic (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), or polyvinyl chloride.

  In the present embodiment, the light source cover 30 is transparent and does not have light diffusibility, but is not limited thereto. The light source cover 30 may have light diffusibility (light scattering). By providing the light source cover 30 with light diffusibility, it is possible to suppress the feeling of light collapse (brightness unevenness) from the first light emitting element 22. In this case, the light source cover 30 is, for example, milky white and can be formed of a resin material in which light diffusion particles are dispersed. Further, a milky white light diffusion film may be formed on the inner surface or the outer surface of the light source cover 30, and a plurality of light diffusion dots or minute irregularities (textures) may be formed on the light source cover 30.

[Power supply unit]
The power supply unit 40 is a power supply device for generating power for lighting the light emitting module 20. The power supply unit 40 converts, for example, AC power supplied from an external power source such as a system power supply or a storage battery via the hooking sealing body and the appliance mounting member 90 to DC power and supplies the DC power to the light emitting module 20.

  Specifically, the power supply unit 40 controls lighting (full lighting) and extinguishing of the light emitting module 20. The power supply unit 40 may perform light adjustment or color adjustment of the light emitting module 20.

  For example, the power supply unit 40 adjusts the amount of power supplied to the light emitting module 20 based on the illumination control signal received by the wireless communication module 100. When the illumination control signal includes a lighting instruction for the light emitting module 20, the power supply unit 40 turns on the light emitting module 20 by supplying power to the light emitting module 20. When the illumination control signal includes an instruction to turn off the light emitting module 20, the power supply unit 40 turns off the light emitting module 20 by stopping the supply of power to the light emitting module 20. When the illumination control signal includes an instruction to select the dimming ratio or color temperature of the light emitting module 20, the power supply unit 40 emits light having the dimming ratio or color temperature selected by the instruction included in the illumination control signal. Control to emit.

  As shown in FIGS. 4 and 5, the power supply unit 40 includes, for example, a circuit board 41, a plurality of circuit elements 42, and an insulating case 43.

  The circuit board 41 is a mounting board for mounting a plurality of circuit elements 42. The circuit board 41 is, for example, a printed wiring board, and is provided with metal wiring that electrically connects a plurality of circuit elements 42. The plurality of circuit elements 42 are, for example, rectifier circuit elements, detection resistors, fuse elements, resistors, capacitors, choke coils, noise filters, diodes, or transistors.

  Although not shown, the circuit board 41 is provided with connectors and lead wires for electrically connecting the instrument mounting member 90 and the circuit board 41. The circuit board 41 is provided with connectors and lead wires for electrically connecting the wireless communication module 100 and the circuit board 41.

  As shown in FIGS. 4 and 5, the insulating case 43 includes a first insulating case 44 and a second insulating case 45. A circuit board 41 and a plurality of circuit elements 42 are disposed in a space surrounded by the first insulating case 44 and the second insulating case 45. As a result, the insulating case 43 suppresses the circuit board 41 and the plurality of circuit elements 42 from contacting the first instrument body 11 or the second instrument body 12 and conducting (shorting).

  The first insulating case 44 is arranged on the arrangement surface 17 of the second instrument body 12 and is fixed by an attaching screw or the like. The second insulating case 45 is disposed so as to face the first insulating case 44. The second insulating case 45 is pressed toward the first insulating case 44 by the first instrument body 11 in a state where the first instrument body 11 and the second instrument body 12 are fixed. Thereby, the second insulating case 45 is fixed with the circuit board 41 between the first insulating case 44 and the first insulating case 44. The first insulating case 44 and the second insulating case 45 are formed using, for example, an insulating resin material.

[Light guide plate]
The light guide plate 50 is an example of an optical member on which light emitted from the second light emitting element 23 enters. Specifically, the light guide plate 50 is a light guide member for guiding the light emitted from each of the plurality of second light emitting elements 23 to the outside of the lighting fixture 1.

  As shown in FIG. 4, the light guide plate 50 is formed in a ring shape having a substantially circular opening 51. The light guide plate 50 includes a curved portion 52, an incident portion 53, and an emitting portion 54 as light guide regions. The light guide plate 50 is formed of a light-transmitting material (for example, a transparent acrylic resin).

  The opening 51 is a substantially circular opening for exposing the light source cover 30.

  As shown in FIG. 6, the bending portion 52 spreads in a trumpet shape from one end (the end on the ceiling side) to the other end (the end on the floor surface side). The bending portion 52 guides light from one end to the other end. Specifically, the bending portion 52 guides the light incident from the incident portion 53 to the emission portion 54. The concave surface side of the curved portion 52 is supported by the support portion 81 of the decorative cover 80. The convex surface side of the curved portion 52 is covered with the reflective portion 61 of the reflective member 60. That is, the bending portion 52 is sandwiched between the support portion 81 of the decorative cover 80 and the reflection portion 61 of the reflection member 60.

  The incident portion 53 is formed in a ring shape over the entire circumference of one end of the curved portion 52, and defines the inner peripheral portion of the light guide plate 50. As illustrated in FIG. 6, the incident portion 53 is disposed at a position facing and close to the plurality of second light emitting elements 23. That is, the plurality of second light emitting elements 23 are disposed at positions facing the inner peripheral portion of the light guide plate 50. Thereby, the light emitted from the second light emitting element 23 enters the incident portion 53.

  As shown in FIGS. 4 and 6, the emitting portion 54 extends in a ring shape from the entire circumference of the other end of the bending portion 52 to the outside in the radial direction of the light guide plate 50, and defines the outer peripheral portion of the light guide plate 50. . The emitting portion 54 protrudes outward in the radial direction of the light guide plate 50 from one end portion of the decorative cover 80, and is arranged in a substantially horizontal posture (that is, a posture substantially parallel to the ceiling). One surface (floor surface surface) of the emission part 54 is a surface from which light is emitted. A prism (not shown) is formed on the other side surface (ceiling side surface) of the emitting portion 54 by, for example, dot processing. The light from the second light emitting element 23 guided by the bending portion 52 is emitted from the emission portion 54 as surface emission.

  Further, as shown in FIG. 4, the light guide plate 50 is formed with a protruding portion 55. The protruding portion 55 is formed so as to protrude from the incident portion 53 toward the opening 51 and along the inner periphery. The projecting portion 55 is provided with a through hole (not shown) into which a mounting screw is inserted. The light guide plate 50 is attached to the instrument main body 10 (first instrument main body 11) by inserting an attachment screw into the through hole. Specifically, the protrusion 55 is fixed by an attachment screw with the light source substrate 21 of the light emitting module 20 sandwiched between the mounting surface 13 of the first instrument body 11. In addition, although the through-hole is formed in the shape of a notch, for example, it is not restricted to this.

[Reflection member]
The reflecting member 60 is a member for reflecting the light guided inside the curved portion 52 of the light guide plate 50 and the light emitted from the light source cover 30.

  The reflection member 60 is formed in a ring shape. Specifically, the reflecting member 60 includes a reflecting portion 61 and a pressing portion 62 as shown in FIGS. 4 and 6.

  The reflection portion 61 extends in a trumpet shape from one end portion (end portion on the ceiling side) to the other end portion (end portion on the floor surface side). Reflective surfaces are formed on both the concave surface side and the convex surface side of the reflective portion 61. The concave surface side of the reflecting portion 61 covers the convex surface side of the curved portion 52 of the light guide plate 50.

  The holding portion 62 extends in a ring shape from the entire circumference of one end portion of the reflecting portion 61 to the radially inner side of the reflecting member 60. The front end portion of the pressing portion 62 presses the protruding portion 55 of the light guide plate 50 and the outer peripheral end portion of the light source cover 30 toward the light source substrate 21. Specifically, a first screw is inserted by inserting a mounting screw into a through hole (not shown) provided in the holding portion 62 and sandwiching the protruding portion 55 of the light guide plate 50 and the light source substrate 21 of the light emitting module 20. Screwed to the main body 11. Thereby, the pressing part 62 presses and fixes the light guide plate 50 and the light source substrate 21 toward the first instrument body 11.

  The reflecting member 60 is made of, for example, a white resin. As a resin material constituting the reflecting member 60, for example, polycarbonate or PBT (polybutylene terephthalate) can be used.

  As shown in FIGS. 4 and 6, an attachment member 63 for detachably attaching the outer cover 70 is fixed to the reflection member 60. In the present embodiment, the three attachment members 63 are fixed to the floor surface side of the pressing portion 62 by attachment screws (not shown). The three attachment members 63 are arranged at substantially equal intervals along the circumferential direction. A part of the second cover 72 of the outer cover 70 is inserted into each of the three attachment members 63 by sliding in the circumferential direction.

  For example, the attachment member 63 is formed of a white resin in the same manner as the reflection member 60, but is not limited thereto. The attachment member 63 may be formed using a metal material. Further, the attachment member 63 and the reflection member 60 may be formed integrally.

[Outer cover]
The outer cover (glove) 70 is a translucent cover having translucency disposed on the light emitting side of the placement surface 13. As shown in FIGS. 1 and 5, in the present embodiment, the outer cover 70 is an outer cover that constitutes the outer shell of the lighting fixture 1. The outer cover 70 covers the instrument body 10, the light emitting module 20, and the light source cover 30.

  As shown in FIGS. 1, 4, and 5, the outer cover 70 includes a first cover 71 and a second cover 72.

  The first cover 71 is disposed so as to cover the opening 51 of the light guide plate 50. The first cover 71 is a plate-like cover arranged in parallel with the placement surface 13. The first cover 71 transmits the light emitted from the light source cover 30 and emits the light to the outside of the lighting fixture 1. The first cover 71 has a substantially disc shape, and an end thereof is connected to the second cover 72. In the present embodiment, the first cover 71 and the second cover 72 are integrally formed.

  The first cover 71 is arranged in a substantially horizontal posture (that is, in a posture substantially parallel to the ceiling). The first cover 71 and the placement surface 13 of the first instrument body 11 are substantially parallel.

  The second cover 72 is arranged in a ring shape so as to cover the emission part 54 of the light guide plate 50. The second cover 72 transmits the light emitted from the light emitting part 54 of the light guide plate 50 and emits the light to the outside of the lighting fixture 1. The second cover 72 is disposed so that the surface on the light emission side of the first cover 71 is substantially flush.

  The second cover 72 has a curved portion 73. As shown in FIG. 6, the curved portion 73 spreads in a trumpet shape from one end (the end on the ceiling side) to the other end (the end on the floor surface side). The curved portion 73 covers the convex surface side of the reflecting portion 61 of the reflecting member 60.

  Note that a protruding portion (not shown) is provided at one end portion (end portion on the ceiling side) of the bending portion 73. The outer cover 70 is fixed to the reflecting member 60 by the projecting portion being slid and inserted into the mounting member 63 fixed to the reflecting member 60. In the present embodiment, the same number (specifically three) of protrusions as the attachment member 63 are provided.

  For example, the curved portion 73 of the outer cover 70 is inserted into the opening 51 of the light guide plate 50, and the entire outer cover 70 is slid (rotated) in the circumferential direction so that each of the plurality of protruding portions corresponds to a corresponding mounting member. 63 is inserted into the slide. The protruding portion that is slid and inserted into the attachment member 63 is locked to the attachment member 63. Thereby, the outer cover 70 is detachably attached to the reflecting member 60.

  Each of the first cover 71 and the second cover 72 can be formed using a light-transmitting resin material. The material of the first cover 71 and the second cover 72 is, for example, acrylic (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), or polyvinyl chloride.

  In the present embodiment, the first cover 71 is a diffusion cover having a light diffusing property (light scattering property). For example, by providing the first cover 71 with light diffusibility, the light from the light source cover 30 incident on the first cover 71 can be diffused (scattered), and the first cover 71 can be uniformly distributed from the whole. The light can be extracted outside.

  In this case, for example, the first cover 71 can have light diffusibility by making the first cover 71 milky white. Specifically, the first cover 71 can be provided with light diffusibility by constituting the first cover 71 with a resin material in which light diffusion particles are dispersed. Alternatively, the first cover 71 may be provided with light diffusibility by forming a milky white light diffusion film on the inner surface or the outer surface of the first cover 71, or a plurality of surfaces may be provided on the surface of the transparent first cover 71. The light diffusibility may be imparted by forming a plurality of light diffusing dots or a plurality of fine irregularities (textures). In addition, light diffusibility may be imparted by forming a plurality of light diffusion dots or a plurality of minute irregularities on the milky white first cover 71.

  Similar to the first cover 71, the second cover 72 may have light diffusibility. At this time, the degree of diffusion by the second cover 72 may be weaker than that of the first cover 71. Alternatively, the second cover 72 does not have light diffusibility and may be formed of a transparent member. By making the first cover 71 and the second cover 72 different in diffusibility, the appearance of the lighting fixture 1 can be improved.

[Decorative cover]
As shown in FIGS. 1 and 5, the decorative cover 80 is a cover for covering the instrument main body 10 from the side to make up. The decorative cover 80 is formed in a ring shape. Specifically, the decorative cover 80 spreads in a trumpet shape from one end (the end on the floor surface side) to the other end (the end on the ceiling side) so as to cover the appliance body 10 from the side. Is arranged. The decorative cover 80 is made of, for example, white polystyrene resin.

  A ring-shaped support portion 81 that extends while curving toward the other end portion of the decorative cover 80 is formed at one end portion of the decorative cover 80 in the radial direction of the decorative cover 80. As shown in FIG. 4, the support portion 81 supports the concave surface side of the curved portion 52 of the light guide plate 50.

  The decorative cover 80 is fixed to the instrument body 10. Specifically, the decorative cover 80 is screwed to the mounting surface 13 of the first instrument body 11 by inserting a mounting screw (not shown) into a through hole (not shown) provided in the support portion 81. Is done.

[Equipment mounting member]
The instrument attachment member 90 is an adapter for detachably attaching the instrument body 10 to a hooked sealing body installed on the ceiling. The instrument mounting member 90 is formed of, for example, an insulating resin material.

  As shown in FIGS. 2 to 4, the instrument mounting member 90 is formed in a substantially cylindrical shape, and is detachably fitted into the holder 91 of the instrument body 10. Moreover, the instrument attachment member 90 is detachably attached to the hooked sealing body. The instrument mounting member 90 is provided with a pair of L-shaped fittings (not shown). The pair of fittings are respectively hooked in the pair of holes of the hooking sealing body, so that the instrument mounting member 90 is detachably attached to the hooking sealing body. Note that the metal fitting of the fixture mounting member 90 also serves as an electrical connection between the hook ceiling body and the lighting fixture 1.

  When installing the lighting fixture 1 on the ceiling, first, the fixture mounting member 90 is hooked and attached to the sealing body. Thereafter, the tool mounting member 90 is inserted into the holder 91 of the tool body 10 and the tool body 10 is pushed up to the ceiling side to fit the holder 91 and the tool mounting member 90 together. Thereby, the fixture main body 10 is attached to a ceiling via the fixture attachment member 90 and a hook sealing body, and the lighting fixture 1 is installed in a ceiling.

  The hook sealing body is electrically connected to a commercial power source (not shown) disposed on the back side of the ceiling via an electric wire (not shown). When the lighting fixture 1 is installed on the ceiling, AC power from a commercial power supply is supplied to the power supply unit 40 of the lighting fixture 1 via the electric wire and the hooking sealing body.

[Wireless communication module]
The wireless communication module 100 receives a control signal for controlling the light emitting module 20 by performing wireless communication. The control signal is, for example, a wireless signal transmitted from a mobile terminal (operation terminal) such as a remote controller or a smartphone operated by the user.

  In the present embodiment, the wireless communication module 100 has not only a reception function but also a transmission function. For example, the wireless communication module 100 transmits the received control signal to another lighting fixture or the like. That is, the wireless communication module 100 may relay a control signal from the operation terminal to another lighting fixture. Thereby, the control signal transmitted from the operating terminal can be received by a lighting fixture (a lighting fixture not located within the communication range of the operating terminal) remote from the operating terminal.

  Wireless communication is communication using radio waves (that is, excluding visible light and infrared light). The wireless communication module 100 performs wireless communication based on a wireless communication standard such as Wi-Fi (registered trademark), Bluetooth (registered trademark), or ZigBee (registered trademark).

  In the present embodiment, the wireless communication module 100 is electrically connected to the power supply unit 40 and receives an illumination control signal for controlling lighting or extinguishing of the light emitting module 20. The wireless communication module 100 may receive an illumination control signal for controlling light adjustment or color adjustment of the light emitting module 20. For example, in the illumination control signal, a lighting instruction for turning on the light emitting module 20, a turning off instruction for turning off the light emitting module 20, or an instruction for selecting a dimming ratio or a color temperature (light color) of the light emitting module 20 Etc. are included.

  FIG. 8 is a perspective view showing an appearance of the wireless communication module 100 according to the present embodiment. FIG. 9 is an exploded perspective view of the wireless communication module 100 according to the present embodiment. FIG. 10 is a three-side view of the resin case 130 of the wireless communication module 100 according to the present embodiment. Specifically, FIGS. 10A to 10C respectively show a top view, a front view, and a side view of the resin case 130.

  As illustrated in FIGS. 8 and 9, the wireless communication module 100 includes a substrate 110, a transmission / reception unit 120, a resin case 130, and a mounting screw 140.

  The substrate 110 is a mounting substrate for mounting the transmission / reception unit 120. The board 110 is, for example, a printed wiring board, and a metal wiring (not shown) that electrically connects the transmission / reception unit 120 is provided on one surface of the board 110. In the present embodiment, the substrate 110 is long and the front view shape is rectangular.

  The substrate 110 is arranged in a posture that intersects the placement surface 13. Specifically, the substrate 110 is orthogonal to the placement surface 13.

  In the present embodiment, as shown in FIGS. 6 and 9, the substrate 110 has an exposed portion 111 and a non-exposed portion 112. The exposed portion 111 is a part of the substrate 110 and is a portion exposed on the light emission side (z axis positive side) of the mounting surface 13. The non-exposed portion 112 is another portion of the substrate 110 and is a portion located on the opposite side of the mounting surface 13 from the light emitting side.

  The exposed portion 111 is a portion on one end side in the longitudinal direction of the substrate 110 (the positive direction of the z-axis) and occupies 40% or more of the length in the longitudinal direction of the substrate 110. The range occupied by the exposed portion 111 is, for example, 40% to 50% of the length in the longitudinal direction of the substrate 110. For example, the exposed portion 111 is the same size as the non-exposed portion 112 or smaller than the non-exposed portion 112. That is, the substrate 110 is accommodated between the first instrument main body 11 and the second instrument main body 12 (that is, inside the instrument main body 10) without exposing at least half of the substrate 110 to the light emission side from the mounting surface 13. Has been.

  The non-exposed portion 112 is a portion on the other end side in the longitudinal direction of the substrate 110 (the negative direction of the z-axis) and is a portion accommodated in the instrument body 10 of the substrate 110. A connector 150 is connected to the non-exposed portion 112 (see FIG. 8). The connector 150 is a circuit element for performing electrical connection between the transmission / reception unit 120 of the wireless communication module 100 and the power supply unit 40.

  In the present embodiment, the substrate 110 intersects the radial direction of the instrument body 10. Specifically, the substrate 110 intersects the radial direction and the circumferential direction of the instrument body 10. For example, the substrate 110 is arranged at an angle of about 45 ° with respect to the radial direction of the instrument body 10 (specifically, the virtual line L1 shown in FIG. 7). Further, the substrate 110 intersects the circumferential direction of the placement surface 13 (specifically, the tangential direction of the virtual line L12 or L13 shown in FIG. 7) at an angle of about 45 °. That is, the substrate 110 is inserted into the opening 14 such that the short direction (y-axis direction) substantially coincides with the longitudinal direction of the opening 14.

  The transmission / reception unit 120 is an example of a reception unit that receives a radio signal. In the present embodiment, the transmission / reception unit 120 includes, for example, a chip antenna or a pattern antenna and a control IC (Integrated Circuit), and transmits / receives a radio signal. Specifically, the transmission / reception unit 120 receives a control signal transmitted from an operation terminal or the like. Further, the transmission / reception unit 120 may transmit the received control signal.

  In the present embodiment, the transmission / reception unit 120 is provided on the exposed portion 111 of the substrate 110. That is, as shown in FIG. 6, the transmission / reception unit 120 is located on the light emission side from the placement surface 13 and is located between the first instrument body 11 (the placement surface 13) and the outer cover 70. .

  The communication range of the transmission / reception unit 120 is formed on both sides of the substrate 110 around the transmission / reception unit 120. Therefore, when the substrate 110 is placed on the placement surface 13 (that is, when the surface of the substrate 110 opposite to the transmitting / receiving unit 120 is placed on the placement surface 13), the communication range on one side of the substrate 110 is set. Is formed on the ceiling side and cannot be used for wireless communication. In the present embodiment, since the substrate 110 is arranged so as to intersect the placement surface 13, the communication range formed on both sides of the substrate 110 can be used effectively.

  The resin case 130 is an example of a resin cover that covers the transmission / reception unit 120 and the exposed portion 111. In the present embodiment, the resin case 130 houses the exposed portion 111 inside. Specifically, the resin case 130 covers the entire transmitting / receiving unit 120 and the substrate 110. The outer shape of the resin case 130 is rounded at a portion along the outer periphery of the exposed portion 111. Specifically, the roundness is a round chamfered shape with a predetermined curvature.

  In the present embodiment, as shown in FIGS. 8 to 10, the resin case 130 includes a first case 130a and a second case 130b. The substrate 110 and the transceiver 120 are accommodated in the resin case 130 by inserting the first case 130 a and the second case 130 b from both ends in the longitudinal direction of the substrate 110.

  The first case 130a houses the exposed part 111 and the transmitting / receiving part 120. As shown in FIGS. 9 and 10, the first case 130 a includes a storage part 131 a, an opening 132 a, a flange part 134 a, and a protruding part 135.

  The storage part 131a is a part for storing the exposed part 111 and the transmission / reception part 120, and has a flat, substantially rectangular parallelepiped space. By inserting one end of the substrate 110 in the longitudinal direction (the side where the transmission / reception unit 120 is provided) from the opening 132a, the exposed portion 111 and the transmission / reception unit 120 are stored in the space of the storage unit 131a.

  The storage portion 131a has a rounded edge portion 133. As shown in FIG. 9 and FIG. 10B, the edge 133 is an inverted U-shaped portion and has a round chamfered shape (bose surface shape) over the entire portion. The outer shape of the edge 133 is, for example, a shape in which a part of a spherical surface, a part of a cylindrical side surface, and a part of a truncated cone side surface are combined. For example, as shown in FIGS. 9 and 10, the edge 133 has two corners 133a, a top 133b, and two sides 133c.

  Each of the two corners 133a corresponds to a portion (1/8 spherical surface) obtained by dividing a spherical surface having a radius (curvature radius) r into eight equal parts. The top portion 133b corresponds to a side surface of a semi-cylinder whose bottom surface is a semicircle having a radius r. Each of the two side portions 133c corresponds to a side surface of a semiconical truncated cone having a semicircle with a radius r as an upper surface. Each of the two side portions 133c may be a side surface of a semi-cylinder whose bottom surface is a semicircle having a radius r.

  The two corner portions 133a and the top portion 133b are smoothly connected to each other, and the two corner portions 133a and the two side portions 133c are also smoothly connected to each other. That is, at the edge 133, corners (pointed portions), steps, and planes are not formed. The entire edge 133 is formed with a smooth curved surface. A corner, a step, or a flat surface may be formed in a portion other than the edge 133 of the storage portion 131a.

  The flange portion 134a is a portion that protrudes toward the opposite side (outward) of the opening 132a along the circumference of the opening 132a. As shown in FIG. 10A, the flange portion 134a has a substantially elliptical shape when viewed from above. The flange portion 134a is engaged with the flange portion 134a of the second case 130b.

  The protruding portion 135 is a portion protruding outward from the storage portion 131a. The protrusion 135 is provided with a slit-shaped through hole 136. A mounting screw 140 is inserted into the through hole 136 and the mounting screw 140 sandwiches the protrusion 135 between the mounting surface 140 and the resin case 130 is fixed to the instrument body 10 (first instrument body 11).

  As shown in FIGS. 9 and 10, the second case 130 b includes a storage part 131 b and a flange part 134 b.

  The storage part 131b is a part for storing the non-exposed part 112 of the substrate 110, and has a flat, substantially rectangular parallelepiped space. By inserting the other end of the substrate 110 in the longitudinal direction (the side to which the connector 150 is connected) from the opening 132b, the non-exposed portion 112 is stored in the space of the storage portion 131b.

  An opening 138 is provided in the storage portion 131b. The opening 138 is provided to expose the non-exposed portion 112 of the substrate 110. Accordingly, the connector 150 can be connected to the non-exposed portion 112 of the substrate 110 in a state where the substrate 110 is stored in the resin case 130.

  The flange part 134b is a part protruding toward the opposite side (outward) from the opening 132b along the circumference of the opening 132b. The flange portion 134b has a substantially elliptical shape that is substantially the same shape as the flange portion 134b of the first case 130a.

  In the present embodiment, the first case 130a and the second case 130b are combined so as to sandwich the substrate 110 from both ends in the longitudinal direction. Specifically, the joint between the first case 130 a and the second case 130 b (the contact surface between the flange portion 134 a and the flange portion 134 b) is close to the placement surface 13. Specifically, as shown in FIG. 6, the joint is parallel to the placement surface 13 and closer to the placement surface 13 than the upper surface of the light source cover 30.

  For example, when a joint is provided at the front end 137 of the first case 130a, the outer cover 70 is likely to be shaded when light hits the joint. In the present embodiment, the joint is close to the placement surface 13, and light emitted from the light source cover 30 hardly hits the joint. For this reason, it is possible to make it difficult for the outer cover 70 to be shaded.

  In the present embodiment, the resin case 130 is formed using a resin material having translucency. The resin case 130 is formed using a transparent resin material such as acrylic or polycarbonate, for example. Specifically, each of the first case 130a and the second case 130b is integrally formed by injection molding using a resin material or the like. Accordingly, the resin case 130 is transmissive to white light (visible light) emitted from the light emitting module 20. Note that the second case 130b may be formed using a light-shielding material.

  The first case 130a may have light diffusibility (light scattering). For example, the first case 130a may be formed using a resin material containing diffusion particles such as silica. For example, the first case 130a may be a milky white case. Alternatively, the first case 130a may have a diffusion structure such as minute irregularities formed on the outer surface by a texture process or the like.

  The resin case 130 can be divided into a first case 130a and a second case 130b, but is not limited thereto. The resin case 130 may be composed of only one case. In this case, for example, the resin case 130 is provided with an opening for inserting the substrate 110 at the rear end (end on the ceiling side). Thereby, an opening can be located in the instrument main body 10, and it can prevent that a joint of an opening, a case, etc. are formed in the light emission side of the mounting surface 13. FIG.

[Mounting position of wireless communication module]
FIG. 11 is a perspective view for explaining attachment of the wireless communication module 100 according to the present embodiment to the instrument main body 10.

  As shown in FIG. 11, the wireless communication module 100 is inserted into an opening 14 provided in the instrument main body 10 (first instrument main body 11). For example, a screw hole 19 is provided near the opening 14 of the first instrument body 11 as shown in FIG. An attachment screw 140 for fixing the resin case 130 of the wireless communication module 100 is screwed into the screw hole 19, whereby the resin case 130 is fixed to the instrument body 10.

  FIG. 12 is a plan view for explaining the position of wireless communication module 100 according to the present embodiment. In FIG. 12, the fixture main body 10 and the radio | wireless communication module 100 are shown among the components with which the lighting fixture 1 is provided, and it does not show about another component.

  In this Embodiment, as shown in FIG. 12, the instrument main body 10 has the inner peripheral area | region 10a, the outer peripheral area | region 10b, and the center area | region 10c, when the mounting surface 13 is planarly viewed. In FIG. 12, in order to make the range of each region easy to understand, each region is shaded with dots.

  The inner peripheral region 10a is a region on the through hole 15a side, and is, for example, a region inside the light emitting module 20.

  The outer peripheral region 10 b is a region on the outer peripheral end side of the instrument body 10, and is, for example, a region outside the light emitting module 20. A flange portion 16a is provided in the outer peripheral region 10b.

  The central region 10c is a region located between the inner peripheral region 10a and the outer peripheral region 10b, and is, for example, a region where the light emitting module 20 is provided.

  In the present embodiment, as shown in FIG. 12, the wireless communication module 100 is provided in the central region 10c. That is, the wireless communication module 100 is surrounded by a metal object (the instrument body 10) when the placement surface 13 is viewed in plan. The metal affects the communication range of the wireless communication module 100. For this reason, the wireless communication module 100 is disposed at a position where a portion where the metal is locally lacked or a portion where the amount of the metal is locally increased is reduced. For example, the wireless communication module 100 is disposed at a position where the surrounding metal objects (mainly the instrument main body 10) exist substantially evenly.

  For example, when the circle centered on the wireless communication module 100 is gradually enlarged, the metal-deficient portion (such as the through hole 15a and the outer portion of the outer periphery of the instrument body 10) existing in the circle is reduced. A wireless communication module 100 is arranged. Specifically, the wireless communication module 100 is disposed at a position that is substantially equidistant with respect to each of the through hole 15 a and the outer peripheral end of the instrument body 10 in the radial direction of the instrument body 10.

  In the present embodiment, the wireless communication module 100 is disposed in the light emitting module 20 when the placement surface 13 is viewed in plan. Specifically, the wireless communication module 100 is located between the innermost first light emitting element 22 and the second light emitting element 23 when the placement surface 13 is viewed in plan. Specifically, the wireless communication module 100 is located on virtual lines L12 and L13 (see FIG. 7) in which the first and outermost first light emitting elements 22 are arranged.

  As shown in FIGS. 5 and 6, a part of the wireless communication module 100 is housed inside the instrument body 10, and the other part is located between the instrument body 10 and the outer cover 70. A distance d1 between the front end 137 that is the end closest to the outer cover 70 of the wireless communication module 100 and the outer cover 70 is, for example, 25 mm or more. Thus, the wireless communication module 100 and the front end 137 are arranged with a predetermined distance. Thereby, the shadow of the wireless communication module 100 can be made difficult to occur in the outer cover 70.

  The shadow of the wireless communication module 100 is less likely to occur as the outer cover 70 is separated from the wireless communication module 100. However, since the distance d between the mounting surface 13 and the outer cover 70 increases, the overall thickness of the lighting fixture 1 increases.

  Therefore, in the present embodiment, as shown in FIG. 6, the distance d between the placement surface 13 and the outer cover 70 is at least twice the distance d2 between the placement surface 13 and the front end 137. 3 times or less. The distance d2 is 20 mm, for example, but is not limited thereto. Thereby, it can suppress that the thickness of the whole lighting fixture 1 becomes large.

[Antenna characteristics (communication range)]
FIGS. 13 and 14 are diagrams illustrating antenna characteristics in the horizontal plane (xy plane) of the wireless communication module 100 according to the first embodiment and the second embodiment, respectively. Specifically, FIG. 13 and FIG. 14 show antenna gains for a radio signal having a frequency of 2442 MHz, respectively. In each figure, the solid line indicates the horizontal polarization of the radio signal.

  The resin case 130 is different between the first embodiment and the second embodiment. Specifically, in Example 1, the resin case 130 has light diffusibility. For example, the resin case 130 according to the first embodiment is a milky white case. In Example 2, the resin case 130 does not have light diffusibility. For example, the resin case 130 according to the second embodiment is a colorless and transparent case.

  In the wireless communication module 100 according to the first embodiment illustrated in FIG. 13, although there is a portion where the gain is reduced to about −10 dBi (a portion surrounded by a one-dot chain line), a substantially circular antenna characteristic is obtained. That is, the wireless communication module 100 according to the first embodiment can stably transmit and receive wireless signals in all directions. The gain in the horizontal plane (xy plane) of the wireless communication module 100 according to the first embodiment is about −3 dBi. Although not shown, the average gain in the three planes including the xz plane and the yz plane was about −4 dBi.

  Also in the wireless communication module 100 according to the second embodiment illustrated in FIG. 14, as in the first embodiment, although there is a portion where the gain is reduced to about −8 dBi (portion surrounded by a one-dot chain line), the substantially circular antenna Characteristics were obtained. That is, the wireless communication module 100 according to the second embodiment can stably transmit and receive wireless signals in all directions. The gain in the horizontal plane (xy plane) of the wireless communication module 100 according to the second embodiment is about −3 dBi. Although not shown, the average gain in the three planes including the xz plane and the yz plane was about −4 dBi.

  Thus, in any case where the resin case 130 has light diffusibility as in the first embodiment and a transparent case as in the second embodiment, the wireless communication module 100 is substantially non-directional. , Wireless signals can be transmitted and received stably in all directions. Therefore, for example, when a user operates an operation terminal such as a remote controller or a smartphone, the wireless communication module 100 can receive a wireless signal from the operation terminal, regardless of the direction in which the lighting fixture 1 is operated. it can. Further, as can be seen from a comparison between Example 1 and Example 2, it is understood that the gain is improved in Example 2 in which the resin case 130 is transparent.

  Here, as Comparative Example 1 and Comparative Example 2, antenna characteristics when the wireless communication module 100 is arranged in the inner peripheral region 10a will be described.

  FIG. 15A is a plan view illustrating an arrangement of the wireless communication module 100 according to the first comparative example. FIG. 15B is a diagram illustrating antenna characteristics in the horizontal plane of the wireless communication module 100 according to the first comparative example. Specifically, FIG. 15B shows the gain of the antenna for a radio signal having a frequency of 2450 MHz. Here, only the horizontal polarization of the radio signal is shown.

  As shown in FIG. 15A, the wireless communication module 100 according to the comparative example 1 is disposed in the immediate vicinity of the through hole 15a in the inner peripheral region 10a. Further, the wireless communication module 100 is arranged so that the main surface of the substrate 110 faces the through hole 15 a, that is, the short direction of the substrate 110 is substantially orthogonal to the radial direction of the instrument body 10.

  As illustrated in FIG. 15B, in the wireless communication module 100 according to the comparative example 1, there is a portion where the gain is greatly reduced (portion surrounded by a one-dot chain line). The portion where the gain is reduced is located in the direction in which the through hole 15 a is provided when viewed from the wireless communication module 100. The wireless communication module 100 according to the comparative example 1 can transmit and receive wireless signals almost stably except in the direction in which the through hole 15a is provided.

  FIG. 16A is a plan view illustrating an arrangement of the wireless communication module 100 according to the second comparative example. FIG. 16B is a diagram illustrating antenna characteristics in the horizontal plane of the wireless communication module 100 according to Comparative Example 2. Specifically, FIG. 16B shows the gain of the antenna for a radio signal having a frequency of 2450 MHz. Here, only the horizontal polarization of the radio signal is shown.

  As illustrated in FIG. 16A, the wireless communication module 100 according to the comparative example 2 is disposed in the immediate vicinity of the through hole 15a in the inner peripheral region 10a as in the comparative example 1. The wireless communication module 100 is arranged so that the short side direction of the substrate 110 is substantially parallel to the radial direction of the instrument body 10.

  As illustrated in FIG. 16B, the wireless communication module 100 according to Comparative Example 2 also has a portion (a portion surrounded by an alternate long and short dash line) where the gain is greatly reduced, as in Comparative Example 1. The portion where the gain is reduced is located in the direction in which the through hole 15 a is provided when viewed from the wireless communication module 100. The wireless communication module 100 according to the comparative example 2 can transmit and receive wireless signals almost stably except in the direction in which the through hole 15a is provided.

  As can be seen from Comparative Example 1 and Comparative Example 2, when the through hole 15a exists in the immediate vicinity of the wireless communication module 100, the gain in the direction in which the through hole 15a is provided is greatly reduced. The through hole 15a is a portion lacking metal, and radio waves (radio signals) are not reflected. For this reason, as a result, radio waves interfere and cancel each other, and the gain decreases.

[Effects, etc.]
As described above, the lighting fixture 1 according to the present embodiment is a metal fixture body 10 (first fixture body 11) provided with a through hole 15a in the center, and emits light so as to surround the through hole 15a. The instrument main body 10 having an annular placement surface 13 on which the module 20 is placed, and the wireless communication module 100 that receives a control signal for controlling the light emitting module 20 by performing wireless communication, the instrument main body. 10 is a plan view of the mounting surface 13, and the inner peripheral region 10a on the through-hole 15a side, the outer peripheral region 10b on the outer peripheral side, and the central region 10c located between the inner peripheral region 10a and the outer peripheral region 10b. The wireless communication module 100 is disposed in the central region 10c.

  Thereby, the mounting surface 13 of the metal instrument body 10 is present in the wireless communication module 100. That is, since there is no portion where the metal is locally absent around the wireless communication module 100, the directivity characteristics of the antenna of the wireless communication module 100 are substantially non-directional. Therefore, the wireless communication module 100 can stably receive wireless signals from all directions. Thus, according to the lighting fixture 1 which concerns on this Embodiment, the fall of wireless communication performance can be suppressed.

  In addition, for example, the wireless communication module 100 is provided on the substrate 110 arranged in a posture intersecting the placement surface 13 and the exposed portion 111 that is a part of the substrate 110 exposed to the light emission side from the placement surface 13. And a transmission / reception unit 120 for receiving a control signal.

  Thereby, the wireless communication module 100 is arranged in a posture in which the substrate 110 intersects the placement surface 13, and the transmission / reception unit 120 is made of metal compared to the case where the substrate 110 is placed on the placement surface 13. Can be separated from the instrument body 10. Therefore, since the influence of a metal can be suppressed, the wireless communication performance by the wireless communication module 100 can be maintained. In the wireless communication module 100, the communication range of the transmission / reception unit 120 is formed on both sides of the substrate 110. For this reason, when the board | substrate 110 cross | intersects the mounting surface 13, the communication range formed in the both sides of the board | substrate 110 can be utilized effectively.

  Further, for example, the central region 10 c is provided with an opening 14 that penetrates the placement surface 13, and the wireless communication module 100 is inserted into the opening 14 in a posture in which the substrate 110 intersects the placement surface 13.

  Accordingly, a part of the wireless communication module 100 is located on the opposite side of the mounting surface 13 from the light emitting side. Specifically, a part of the wireless communication module 100 is housed inside the instrument body 10. For this reason, the part located in the light emission side of the radio | wireless communication module 100 can be decreased, and it can suppress blocking the light from the light emitting module 20. FIG. Therefore, it is possible to suppress the shadow of the wireless communication module 100 from being generated on the outer cover 70 or the like.

  For example, the substrate 110 is orthogonal to the placement surface 13 and intersects the radial direction of the instrument body 10.

  Thereby, since the transmission / reception part 120 can be separated from the instrument main body 10, the influence of a metal can be suppressed and radio | wireless communication performance can be improved.

  Further, for example, the wireless communication module 100 is disposed in the light emitting module 20 when the placement surface 13 is viewed in plan.

  Thereby, since light hits by the light emitting module 20 from the periphery of the wireless communication module 100, the occurrence of a shadow of the wireless communication module 100 can be suppressed.

  Further, for example, the wireless communication module 100 is disposed at a position that is substantially equidistant from each of the through hole 15 a and the outer peripheral end of the instrument body 10 in the radial direction of the instrument body 10.

  Thereby, since the distance to the part (outside the outer peripheral end of the through-hole 15a and the instrument main body 10) which metal is missing can be made as large as possible, the influence by the lacking part can be suppressed. Therefore, the lighting fixture 1 can suppress the fall of wireless communication performance more.

(Other)
As mentioned above, although the lighting fixture which concerns on this invention was demonstrated based on said embodiment, this invention is not limited to said embodiment.

  For example, in the above embodiment, the example in which the construction material to which the lighting fixture 1 is attached is the ceiling is shown, but the present invention is not limited to this. The construction material may be, for example, a wall inside a building.

  In the above embodiment, the light emitting module 20 is an SMD type LED module using SMD type LED elements as the first light emitting element 22 and the second light emitting element 23, but is not limited thereto. . For example, the light emitting module 20 may be a COB (Chip On Board) type LED module in which an LED chip is used as each of the first light emitting element 22 and the second light emitting element 23. In this case, the light emitting module 20 includes a light source substrate 21, one or a plurality of LED chips (bare chips) directly mounted on the light source substrate 21, and a sealing member such as a phosphor-containing resin that seals the LED chips. Composed.

  For example, in the above-described embodiment, an example in which the wireless communication module 100 has a transmission / reception function has been described. For example, the wireless communication module 100 may have only a reception function.

  Further, for example, in the above-described embodiment, an example in which the resin case 130 is formed using a light-transmitting resin material has been described, but the present invention is not limited thereto. The resin case 130 may be formed using a light shielding material.

  Further, for example, in the above embodiment, the resin case 130 is described as an example of the resin cover that covers the transmission / reception unit 120 and the exposed portion 111, but the present invention is not limited thereto. For example, the resin cover may be a mold resin that covers the transmission / reception unit 120 and the exposed portion 111. Specifically, the resin material before curing may be applied to the transmitting / receiving unit 120 and the exposed unit 111 so that the ends are rounded and cured. Thereby, since the thickness of the radio | wireless communication module 100 can be made thinner, generation | occurrence | production of a shadow can be suppressed further.

  In addition, the embodiment can be realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, or a form obtained by subjecting each embodiment to various modifications conceived by those skilled in the art. Forms are also included in the present invention.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Appliance main body 10a Inner peripheral area | region 10b Outer peripheral area | region 10c Central area | region 13 Mounting surface 14 Opening 15a, 15b Through-hole 20 Light emitting module (light emission part)
100 Wireless communication module 110 Substrate 111 Exposed portion 120 Transmitter / receiver (receiver)

Claims (6)

A metal instrument body provided with a through hole in the center, and an instrument body having an annular placement surface on which a light emitting part is placed so as to surround the through hole;
A wireless communication module that receives a control signal for controlling the light emitting unit by performing wireless communication,
The instrument body has an inner peripheral region on the through-hole side, an outer peripheral region on the outer peripheral side, and a central region located between the inner peripheral region and the outer peripheral region when the placement surface is viewed in plan view. Have
The wireless communication module is disposed in the central region. The wireless communication module is
A substrate placed in a posture intersecting the placement surface, and
The lighting apparatus according to claim 1, further comprising: a receiving unit that receives the control signal, and is provided in an exposed part that is a part of the substrate exposed to the light emitting side from the mounting surface. The central region is provided with an opening that penetrates the mounting surface.
The lighting apparatus according to claim 2, wherein the wireless communication module is inserted into the opening in a posture in which the substrate intersects the placement surface. The lighting device according to claim 2, wherein the substrate is orthogonal to the placement surface and intersects the radial direction of the device main body. The lighting apparatus according to any one of claims 1 to 4, wherein the wireless communication module is disposed in the light emitting unit when the placement surface is viewed in plan. The wireless communication module is disposed at a position that is substantially equidistant with respect to each of the through hole and the outer peripheral end of the instrument body in the radial direction of the instrument body. The lighting fixture as described in a term.

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