JP6883779B2 - lighting equipment - Google Patents

Description

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

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

Japanese Unexamined Patent Publication No. 2014-150032

The above-mentioned conventional lighting equipment has a problem that the wireless communication performance is deteriorated due to the influence of the metal housing.

Therefore, an object of the present invention is to provide a lighting fixture capable of suppressing a decrease in wireless communication performance.

In order to achieve the above object, the lighting fixture according to one aspect of the present invention is a metal fixture main body provided with a through hole in the center, and an annular shape in which a light emitting portion is placed so as to surround the through hole. A device main body having a mounting surface and a wireless communication module that receives a control signal for controlling the light emitting unit by performing wireless communication, and the device main body is a case where the above-mentioned mounting surface is viewed in a plan view. The wireless communication module 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, and the wireless communication module is located in the central region. Have been placed.

According to the lighting equipment according to the present invention, deterioration of wireless communication performance can be suppressed.

It is a perspective view which shows the appearance of the luminaire which concerns on embodiment on the floor surface side. It is a perspective view which shows the appearance of the ceiling side of the lighting fixture which concerns on embodiment. It is a perspective view of the lighting equipment which concerns on embodiment with the outer cover removed. It is an exploded perspective view of the lighting equipment which concerns on embodiment. It is sectional drawing of the lighting equipment which concerns on embodiment in the VV line of FIG. FIG. 5 is an enlarged cross-sectional view of a lighting fixture according to an embodiment showing an enlarged area VI of FIG. It is a top view for demonstrating the positional relationship between the opening into which the wireless communication module which concerns on embodiment is inserted, and a light emitting module. It is a perspective view which shows the appearance of the wireless communication module which concerns on embodiment. It is an exploded perspective view of the wireless communication module which concerns on embodiment. It is a three-sided view of the resin case of the wireless communication module which concerns on embodiment. It is a perspective view for demonstrating the attachment to the apparatus main body of the wireless communication module which concerns on embodiment. It is a top view for demonstrating the position of the wireless communication module which concerns on embodiment. It is a figure which shows the antenna characteristic in the horizontal plane of the wireless communication module which concerns on Example 1. FIG. It is a figure which shows the antenna characteristic in the horizontal plane of the wireless communication module which concerns on Example 2. FIG. It is a top view which shows the arrangement of the wireless communication module which concerns on Comparative Example 1. FIG. It is a figure which shows the antenna characteristic in the horizontal plane of the wireless communication module which concerns on Comparative Example 1. FIG. It is a top view which shows the arrangement of the wireless communication module which concerns on Comparative Example 2. FIG. It is a figure which shows the antenna characteristic in the horizontal plane of the wireless communication module which concerns on Comparative Example 2. FIG.

Hereinafter, the lighting equipment according to the embodiment of the present invention will be described in detail with reference to the drawings. It should be noted that all of the embodiments described below show a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement and connection forms of the components, steps, the order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present invention will be described as arbitrary components.

Further, each figure is a schematic view and is not necessarily exactly illustrated. Therefore, for example, the scales and the like do not always match in each figure. Further, in each figure, substantially the same configuration is designated by the same reference numerals, and duplicate description will be omitted or simplified. Further, in the following embodiments, expressions using "abbreviations" such as substantially parallel or substantially vertical are used. For example, substantially parallel means not only perfectly parallel, but also substantially parallel, that is, including a difference of, for example, about a few percent. The same applies to expressions using other "abbreviations".

Further, in the present specification and the drawings, the x-axis, the y-axis and the z-axis indicate the three axes of the three-dimensional Cartesian 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. The positive direction of the z-axis is vertically downward.

(Embodiment)
[Overview]
First, the outline of the lighting fixture 1 according to the embodiment will be described with reference to FIGS. 1 to 4.

FIG. 1 is a perspective view showing the appearance of the lighting fixture 1 according to the present embodiment on the floor surface side. FIG. 2 is a perspective view showing the appearance of the lighting fixture 1 according to the present embodiment on the ceiling side. 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 in FIGS. 1 to 4 is installed in a building material of a building such as a house, for example. As an example, the luminaire 1 is a ceiling light fixed to the ceiling of the building and illuminates the 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 unit) 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, an instrument mounting member 90, and a wireless communication module 100 are provided.

Hereinafter, each component of the luminaire 1 will be described in detail with reference to FIGS. 1 to 4 and with reference to FIGS. 5 to 7.

FIG. 5 is a cross-sectional view of the luminaire 1 according to the present embodiment in the VV line of FIG. FIG. 6 is an enlarged cross-sectional view of the luminaire 1 according to the present embodiment showing an enlarged area VI of FIG. 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. FIG. 7 shows the light emitting module 20 and the fixture body 10 (specifically, the first fixture body 11) among the components included in the lighting fixture 1, and the other components are not shown. ..

In each figure, the negative side of the z-axis represents the ceiling side, and the positive side of the z-axis represents the floor surface side. Further, for convenience of explanation, in each of the remaining drawings except FIG. 2, the luminaire 1 is shown in an upside-down posture from the posture during normal use.

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

As shown in FIGS. 4 to 6, the instrument body 10 includes a first instrument body 11 and a second instrument body 12. In the present embodiment, the light emitting module 20, the light source cover 30, the light guide plate 50, the reflective member 60, and the decorative cover 80 are fixed in the positive direction (floor surface side) of the z-axis of the first instrument main body 11. The power supply unit 40 is housed in the space composed of 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 main body 11.

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

The mounting surface 13 is a main surface on the floor surface side of the first instrument main body 11 (instrument main body 10), and is a surface on which the light emitting module 20 is mounted 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 from the flange portion 16a provided in an annular shape along the outer periphery thereof to the light emitting side (normal side of the z-axis). ..

As shown in FIGS. 4 to 7, the opening 14 penetrates the mounting surface 13. The opening 14 is an opening for inserting the wireless communication module 100, and penetrates the first instrument main 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 mounting 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 the 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 mounting surface 13 (specifically, the virtual line L1) at an angle of about 45 °. Further, the longitudinal direction of the opening 14 intersects the circumferential direction of the mounting surface 13 (specifically, the tangential direction of the virtual lines L11 to L13) at an angle of about 45 °.

The through hole 15a is a hole for exposing the instrument mounting member 90 for mounting on the hook ceiling 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 race track shape that is long in a predetermined direction, but is not limited to this. Since the fixture mounting member 90 is exposed on the floor surface side, the removal operation lever included in the fixture mounting member 90 can be easily operated, and the lighting fixture 1 can be removed from the ceiling surface.

The first instrument body 11 also functions as a reflective cover for reflecting the light from the light emitting module 20. Further, the first appliance main body 11 also functions as a heat sink for dissipating heat from the light emitting module 20.

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

As shown in FIGS. 2 and 4, the second instrument main body 12 has a through hole 15b, a flange portion 16b, and an arrangement surface 17. In the present embodiment, the second instrument body 12 is made of flat sheet metal, and the 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 like this. The front view shape of the second instrument main body 12 is a disk shape having a through hole 15b provided in the center.

As shown in FIG. 2, the 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 15b on the arrangement surface 17 side. An instrument mounting member 90 is detachably fitted inside the holder 91.

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

The arrangement surface 17 is a surface of the second instrument main body 12 in the positive direction (floor surface side) of the z-axis, and is a surface for arranging the power supply unit 40. 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 and the like are 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 (the back side of the arrangement surface 17) of the second appliance main body 12. The plurality of cushion members 18 are arranged at equal intervals along the circumferential direction of the second instrument main 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, so that the wobbling of the lighting fixture 1 is suppressed. ..

The second instrument body 12 is made of metal and is made of a metal material. The second instrument body 12 is formed into a predetermined shape by pressing a sheet metal such as an aluminum plate or a steel plate, for example. 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 will be omitted, a screw hole into which a mounting screw for fixing the light emitting module 20 and the light source cover 30 is inserted, and a light guide plate 50 are provided on the mounting surface 13 of the first instrument main body 11. , A screw hole into which a mounting screw for fixing the reflective member 60 and the decorative cover 80 is inserted is provided. The arrangement surface 17 of the second instrument main body 12 is provided with a screw hole or the like into which a mounting screw for fixing the power supply unit 40 and the holder 91 is inserted. Further, mounting screws for fixing the first instrument body 11 and the second instrument body 12 are inserted into the flange portion 16a of the first instrument body 11 and the flange portion 16b of the second instrument body 12, respectively. There is a screw hole to be used.

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

In this embodiment, a plurality of light emitting modules 20 are provided. That is, the light emitting unit of the luminaire 1 is composed of a plurality of light emitting modules 20. Specifically, as shown in FIGS. 4 and 7, the luminaire 1 has three light emitting modules 20 as light emitting units. The three light emitting modules 20 are arranged adjacent to each other so as to form a ring (doughnut shape). The three light emitting modules 20 have the same configuration as each other. The luminaire 1 may include one ring-shaped light emitting module as a light emitting unit.

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

The light source substrate 21 is a mounting substrate for mounting a plurality of first light emitting elements 22 and a plurality of second light emitting elements 23. The light source substrate 21 is, for example, a printed wiring board, and metal wiring is patterned 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 mounting surface 13 of the first fixture main 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 plan 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 by 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 which is a sintered body of a ceramic material, a glass substrate made of a glass material, or the like. Is. The light source substrate 21 is not limited to the rigid substrate, but 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.

Each of the plurality of first light emitting elements 22 and the plurality of second light emitting elements 23 is a packaged surface mount device (SMD) type LED (Light Emitting Diode) element. As an example, each of the first light emitting element 22 and the second light emitting element 23 has 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 the like. It has a sealing member enclosed in a recess of the package. The sealing member is made of a translucent resin material such as a 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 by a predetermined DC power, and is a bare chip that emits a single color of 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 the blue light from the blue LED chip as excitation light.

As described above, each of the first light emitting element 22 and the second light emitting element 23 is a BY type white LED element composed of a blue LED chip and a yellow phosphor. 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 the yellow light. White light is generated by mixing the emitted yellow light with the blue light that has not been absorbed by the yellow phosphor. 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 neutral white light, and the second light emitting element 23 may emit light bulb-colored light.

Further, the first light emitting element 22 and the second light emitting element 23 may emit light at the same time, or only one of the first light emitting element 22 and the second light emitting element 23 may emit light. The mode of connection (series connection, parallel connection, connection of a combination of series connection and parallel connection, etc.) 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 in 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 in the inner peripheral region of the light source substrate 21 when viewed in the radial direction. 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, the plurality of first light emitting elements 22 are arranged on three concentric circular virtual lines L11 to L13 as a whole of the light emitting unit. There is. The 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 luminaire 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 region is a region outside the inner peripheral region. The plurality of second light emitting elements 23 are arranged in only one row in the outer peripheral region of the light source substrate 21, for example, at intervals in the circumferential direction of the light source substrate 21. More specifically, as shown in FIG. 7, a plurality of second light emitting elements 23 are arranged on one annular virtual line L20 as a whole of the light emitting unit. The light emitted from the plurality of second light emitting elements 23 is incident on the incident portion 53 of the light guide plate 50, is guided by the light guide plate 50, and is emitted to the outside of the luminaire 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. It is supplied to the light source substrate 21.

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 the range of 0% (off) to 100% (all on). The dimming ratio is an example of a parameter indicating the intensity of light (irradiance). Further, for example, the light emitting module 20 emits light having a color temperature selected from the range of 2700K to 6500K. The color temperature is an example of a parameter indicating the hue of light. The instruction to select 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 independently emit each of the red light (R), the green light (G), and the blue light (B). 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 arranged inside the outer cover 70. The light source cover 30 covers a plurality of first light emitting elements 22 provided in the light emitting module 20. That is, the light emitted by the plurality of first light emitting elements 22 is incident on 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 the light emitted by 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 shown in FIGS. 3 and 4, the light source cover 30 has a plurality of lens portions 31. The plurality of lens units 31 are provided in a 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 (three turns). The lens unit 31 expands the light distribution angle of the light from the corresponding first light emitting element 22, for example. 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 by 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 two outer rings of the three virtual rings formed by the plurality of lens portions 31. That is, the through hole 32 is formed on the virtual lines L12 and L13 shown in FIG. 7.

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

In the present embodiment, the light source cover 30 is transparent and does not have light diffusivity, but is not limited to this. The light source cover 30 may have light diffusivity (light scattering property). By providing the light source cover 30 with light diffusivity, it is possible to suppress the crushing feeling (luminance unevenness) of the light 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 diffusing particles are dispersed. Further, a milky white light diffusing film may be formed on the inner surface or the outer surface of the light source cover 30, and a plurality of light diffusing 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 electric power for lighting the light emitting module 20. The power supply unit 40 converts AC power supplied from an external power source such as a system power supply or a storage battery via a hook sealing body and an appliance mounting member 90 into DC power and supplies it to the light emitting module 20.

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

For example, the power supply unit 40 adjusts the amount of electric power supplied to the light emitting module 20 based on the lighting control signal received by the wireless communication module 100. When the lighting control signal includes a lighting instruction of the light emitting module 20, the power supply unit 40 lights the light emitting module 20 by supplying electric power to the light emitting module 20. When the lighting 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 electric power to the light emitting module 20. When the illumination control signal includes an instruction for selecting the dimming ratio or color temperature of the light emitting module 20, the power supply unit 40 emits light having a dimming ratio or color temperature selected by the instruction included in the illumination control signal. Is controlled 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 for electrically connecting a plurality of circuit elements 42. The plurality of circuit elements 42 are, for example, a rectifier circuit element, a detection resistor, a fuse element, a resistor, a capacitor, a choke coil, a noise filter, a diode, a transistor, and the like.

Although not shown, the circuit board 41 is provided with a connector and a lead wire for electrically connecting the instrument mounting member 90 and the circuit board 41. Further, the circuit board 41 is provided with a connector and a lead wire for electrically connecting the wireless communication module 100 and the circuit board 41.

The insulating case 43 includes a first insulating case 44 and a second insulating case 45, as shown in FIGS. 4 and 5. The circuit board 41 and the plurality of circuit elements 42 are arranged in the 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 coming into contact with the first instrument main body 11 or the second instrument main body 12 to conduct (short-circuit).

The first insulating case 44 is arranged on the arrangement surface 17 of the second instrument main body 12 and is fixed by a mounting screw or the like. The second insulating case 45 is arranged 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 main body 11 in a state where the first instrument main body 11 and the second instrument main body 12 are fixed. As a result, the second insulating case 45 is fixed with the circuit board 41 sandwiched between the second insulating case 45 and the first insulating case 44. The first insulating case 44 and the second insulating case 45 are formed by using, for example, an insulating resin material.

[Light guide plate]
The light guide plate 50 is an example of an optical member to which the light emitted from the second light emitting element 23 is incident. 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 luminaire 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 has a curved portion 52, an incident portion 53, and an exit portion 54 as an optical region. The light guide plate 50 is made of a translucent 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 curved portion 52 extends in a trumpet shape from one end (end on the ceiling side) to the other end (end on the floor side). The curved portion 52 guides light from one end to the other. Specifically, the curved portion 52 guides the light incident from the incident portion 53 to the emitting portion 54. The concave side of the curved portion 52 is supported by the support portion 81 of the decorative cover 80. The convex side of the curved portion 52 is covered with the reflecting portion 61 of the reflecting member 60. That is, the curved portion 52 is sandwiched between the support portion 81 of the decorative cover 80 and the reflective portion 61 of the reflective 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 shown in FIG. 6, the incident portion 53 is arranged 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 arranged at positions facing the inner peripheral portion of the light guide plate 50. As a result, the light emitted from the second light emitting element 23 is incident on the incident portion 53.

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

Further, as shown in FIG. 4, a protrusion 55 is formed on the light guide plate 50. The projecting portion 55 is formed so as to project from the incident portion 53 toward the opening 51 and along the inner circumference. The protrusion 55 is provided with a through hole (not shown) into which a mounting screw is inserted. By inserting the mounting screw into the through hole, the light guide plate 50 is attached to the instrument body 10 (first instrument body 11). Specifically, the projecting portion 55 sandwiches the light source substrate 21 of the light emitting module 20 with the mounting surface 13 of the first instrument main body 11 and is fixed by mounting screws. The through hole is formed in a notch shape, for example, but is not limited to this.

[Reflective member]
The reflection 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 reflective member 60 is formed in a ring shape. Specifically, the reflective member 60 has a reflective portion 61 and a pressing portion 62, as shown in FIGS. 4 and 6.

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

The pressing portion 62 extends in a ring shape inward in the radial direction of the reflecting member 60 from the entire circumference of one end portion of the reflecting portion 61. The tip 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 mounting screw is inserted into a through hole (not shown) provided in the holding portion 62, and the protruding portion 55 of the light guide plate 50 and the light source substrate 21 of the light emitting module 20 are sandwiched between the first fixtures. It is screwed to the main body 11. As a result, the pressing portion 62 presses and fixes the light guide plate 50 and the light source substrate 21 toward the first instrument main body 11.

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

As shown in FIGS. 4 and 6, a mounting member 63 for detachably mounting the outer cover 70 is fixed to the reflective member 60. In the present embodiment, the three mounting members 63 are fixed to the floor surface side of the holding portion 62 by mounting screws (not shown). The three mounting 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 mounting members 63 by sliding in the circumferential direction.

The mounting member 63 is made of white resin, like the reflective member 60, but is not limited to this. The mounting member 63 may be formed by using a metal material. Further, the mounting member 63 and the reflecting member 60 may be integrally formed.

[Outer cover]
The outer cover (glove) 70 is a translucent cover that is arranged on the light emitting side of the mounting 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 luminaire 1. The outer cover 70 covers the fixture 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 arranged so as to cover the opening 51 of the light guide plate 50. The first cover 71 is a plate-shaped cover arranged in parallel with the mounting surface 13. The first cover 71 transmits the light emitted from the light source cover 30 and emits it to the outside of the luminaire 1. The first cover 71 has a substantially disk shape, and its end is connected to the second cover 72. In the present embodiment, the first cover 71 and the second cover 72 are integrally configured.

The first cover 71 is arranged in a substantially horizontal position (that is, in a position substantially parallel to the ceiling). The first cover 71 and the mounting surface 13 of the first instrument main body 11 are substantially parallel to each other.

The second cover 72 is arranged in a ring shape so as to cover the exit portion 54 of the light guide plate 50. The second cover 72 transmits the light emitted from the exit portion 54 of the light guide plate 50 and emits it to the outside of the luminaire 1. The second cover 72 is arranged so that the surface on the light emitting side is substantially flush with the first cover 71.

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

A protruding portion (not shown) is provided at one end (end on the ceiling side) of the curved portion 73. The outer cover 70 is fixed to the reflective member 60 by sliding the protruding portion into the mounting member 63 fixed to the reflective member 60 and locking the protrusion. In the present embodiment, the same number (specifically, three) of protrusions as the mounting member 63 is provided.

For example, by inserting the curved portion 73 of the outer cover 70 into the opening 51 of the light guide plate 50 and sliding (rotating) the entire outer cover 70 in the circumferential direction, each of the plurality of protruding portions corresponds to the mounting member. The slide is inserted into 63. The protruding portion slide-inserted into the mounting member 63 is locked to the mounting member 63. As a result, the outer cover 70 is detachably attached to the reflective member 60.

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

In the present embodiment, the first cover 71 is a diffusion cover having light diffusivity (light scattering property). For example, by giving the first cover 71 light diffusivity, the light from the light source cover 30 incident on the first cover 71 can be diffused (scattered), and is uniform from the entire first cover 71. Light can be taken out to the outside.

In this case, for example, by making the first cover 71 milky white, the first cover 71 can be made to have light diffusivity. Specifically, the first cover 71 can be made to have light diffusivity by forming the first cover 71 with a resin material in which light diffusing particles are dispersed. Alternatively, the first cover 71 may be provided with light diffusivity by forming a milky white light diffusing film on the inner surface or the outer surface of the first cover 71, or a plurality of transparent first covers 71 may be provided on the surface. The light diffusing property may be provided by forming the light diffusing dots or a plurality of fine irregularities (textures). In addition, the milky white first cover 71 may be provided with light diffusivity by further forming a plurality of light diffusing dots or a plurality of microconcavities and convexities.

The second cover 72 may have light diffusivity like the first cover 71. 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 may not have light diffusivity and may be made of a transparent member. By making the diffusivity different between the first cover 71 and the second cover 72, the appearance of the luminaire 1 can be improved.

[Makeup 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 and applying makeup. The decorative cover 80 is formed in a ring shape. Specifically, the decorative cover 80 extends in a trumpet shape from one end (end on the floor side) to the other end (end on the ceiling side) so as to cover the appliance body 10 from the side. Is located in. The decorative cover 80 is made of, for example, a white polystyrene resin.

At one end of the decorative cover 80, a ring-shaped support portion 81 is formed inside the decorative cover 80 in the radial direction and extending while curving toward the other end of the decorative cover 80. As shown in FIG. 4, the support portion 81 supports the concave 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 main body 11 by inserting a mounting screw (not shown) into a through hole (not shown) provided in the support portion 81. Will be done.

[Tool mounting member]
The fixture mounting member 90 is an adapter for detachably mounting the fixture body 10 on a hook ceiling 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 columnar shape and is detachably fitted inside the holder 91 of the instrument body 10. Further, the instrument mounting member 90 is detachably attached to the hook ceiling body. The instrument mounting member 90 is provided with a pair of L-shaped metal fittings (not shown). By hooking each of these pair of metal fittings into a pair of holes in the hook ceiling body, the instrument mounting member 90 is detachably attached to the hook ceiling body. 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 ceiling body. After that, the instrument mounting member 90 is inserted into the holder 91 of the instrument body 10, and the instrument body 10 is pushed up toward the ceiling to fit the holder 91 and the instrument mounting member 90. As a result, the fixture body 10 is attached to the ceiling via the fixture mounting member 90 and the hook ceiling body, and the lighting fixture 1 is installed on the ceiling.

The hook ceiling body is electrically connected to a commercial power source (not shown) arranged behind the ceiling via an electric wire (not shown). When the luminaire 1 is installed on the ceiling, AC power from a commercial power source is supplied to the power supply unit 40 of the luminaire 1 via an electric wire and a hook ceiling 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 receiving function but also a transmitting function. For example, the wireless communication module 100 transmits the received control signal to other lighting equipment or the like. That is, the wireless communication module 100 may relay the control signal from the operation terminal to another lighting fixture. As a result, the control signal transmitted from the operation terminal can be received by a luminaire (a luminaire not located within the communication range of the operation terminal) away from the operation 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 a lighting control signal for controlling the lighting or extinguishing of the light emitting module 20. The wireless communication module 100 may receive a lighting control signal for controlling dimming or toning of the light emitting module 20. For example, the lighting control signal includes 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 the 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-view view of the resin case 130 of the wireless communication module 100 according to the present embodiment. Specifically, FIGS. 10A to 10C show a top view, a front view, and a side view of the resin case 130, respectively.

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

The substrate 110 is arranged so as to intersect the mounting surface 13. Specifically, the substrate 110 is orthogonal to the mounting surface 13.

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

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

The non-exposed portion 112 is a portion on the other end side (negative direction of the z-axis) of the substrate 110 in the longitudinal direction, and is a portion housed in the instrument main 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 electrically connecting the transmission / reception unit 120 of the wireless communication module 100 and the power supply unit 40.

In this embodiment, the substrate 110 intersects the instrument body 10 in the radial direction. Specifically, the substrate 110 intersects the instrument main body 10 in the radial direction and the circumferential direction. For example, the substrate 110 is arranged at an angle of about 45 ° with respect to the radial direction of the instrument main body 10 (specifically, the virtual line L1 shown in FIG. 7). Further, the substrate 110 intersects the circumferential direction of the mounting 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 so that its lateral 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 wireless signal. In the present embodiment, the transmission / reception unit 120 is composed of, for example, a chip antenna or a pattern antenna and a control IC (Integrated Circuit), and transmits / receives radio signals. 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 unit 111 of the substrate 110. That is, as shown in FIG. 6, the transmission / reception unit 120 is located on the light emitting side of the mounting surface 13 and is located between the first instrument main body 11 (mounting 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 centering on the transmission / reception unit 120. Therefore, when the substrate 110 is laid down on the mounting surface 13 (that is, when the surface of the substrate 110 opposite to the transmission / reception unit 120 is mounted on the mounting surface 13), the communication range on one side of the substrate 110 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 mounting surface 13, the communication range formed on both sides of the substrate 110 can be effectively used.

The resin case 130 is an example of a resin cover that covers the transmission / reception portion 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 transmission / reception unit 120 and the substrate 110. The outer shape of the resin case 130 is rounded at a portion along the outer circumference of the exposed portion 111. Specifically, the roundness is a round chamfered shape having 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 transmission / reception unit 120 are housed in the resin case 130 by inserting the first case 130a and the second case 130b from both ends in the longitudinal direction of the substrate 110 so as to cover the first case 130a and the second case 130b, respectively.

The first case 130a houses the exposed portion 111 and the transmission / reception portion 120. As shown in FIGS. 9 and 10, the first case 130a has a storage portion 131a, an opening 132a, a flange portion 134a, and a protrusion 135.

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

The storage portion 131a has a rounded edge portion 133. The edge portion 133 is an inverted U-shaped portion as shown in FIGS. 9 and 10 (b), and has a round chamfered shape (Bose surface shape) over all of the edge portion 133. The outer shape of the edge portion 133 is, for example, a shape in which a part of a spherical surface, a part of a side surface of a cylinder, and a part of a side surface of a truncated cone are combined. For example, as shown in FIGS. 9 and 10, the edge portion 133 has two corner portions 133a, a top portion 133b, and two side portions 133c.

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

The two corners 133a and the top 133b are smoothly connected to each other, and the two corners 133a and the two side pieces 133c are also smoothly connected to each other. That is, no corners (pointed portions), steps, or flat surfaces are formed at the edge portion 133. The entire edge portion 133 is formed of a smooth curved surface. A corner, a step, or a flat surface may be formed in a portion of the storage portion 131a other than the edge portion 133.

The flange portion 134a is a portion that projects along the circumference of the opening 132a toward the opposite side (outward) 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 protrusion 135 is a portion that protrudes outward from the storage 131a. The protrusion 135 is provided with a slit-shaped through hole 136. The mounting screw 140 is inserted into the through hole 136, and the resin case 130 is fixed to the instrument body 10 (first instrument body 11) by sandwiching the protrusion 135 between the mounting screw 140 and the mounting surface 13.

The second case 130b has a storage portion 131b and a flange portion 134b, as shown in FIGS. 9 and 10.

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

The storage portion 131b is provided with an opening 138. The opening 138 is provided to expose the unexposed portion 112 of the substrate 110. As a result, the connector 150 can be connected to the unexposed portion 112 of the substrate 110 while the substrate 110 is housed in the resin case 130.

The flange portion 134b is a portion that projects along the circumference of the opening 132b toward the opposite side (outward) of the opening 132b. The flange portion 134b has a substantially elliptical shape having 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 130a and the second case 130b (the contact surface between the flange portion 134a and the flange portion 134b) is close to the mounting surface 13. Specifically, as shown in FIG. 6, the joint is parallel to the mounting surface 13 and is located closer to the mounting surface 13 than the upper surface of the light source cover 30.

For example, when the joint is provided at the front end 137 or the like of the first case 130a, a shadow is likely to be generated on the outer cover 70 when the joint is exposed to light. In the present embodiment, the joint is close to the mounting surface 13, and the joint is hardly exposed to the light emitted from the light source cover 30. Therefore, it is possible to prevent shadows from being generated on the outer cover 70.

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

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

Further, the resin case 130 can be divided into a first case 130a and a second case 130b, but the present invention is not limited to this. 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 at the rear end (end on the ceiling side) for inserting the substrate 110. As a result, the opening is located in the instrument main body 10, and the joint between the opening and the case can be prevented from being formed on the light emitting side of the mounting surface 13.

[Wireless communication module mounting position]
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 the opening 14 provided in the instrument body 10 (first instrument body 11). For example, as shown in FIG. 11, a screw hole 19 is provided in the vicinity of the opening 14 of the first instrument main body 11. The resin case 130 is fixed to the instrument main body 10 by screwing the mounting screw 140 for fixing the resin case 130 of the wireless communication module 100 into the screw hole 19.

FIG. 12 is a plan view for explaining the position of the wireless communication module 100 according to the present embodiment. FIG. 12 shows the fixture main body 10 and the wireless communication module 100 among the components included in the lighting fixture 1, and the other components are not shown.

In the present embodiment, as shown in FIG. 12, the instrument main body 10 has an inner peripheral region 10a, an outer peripheral region 10b, and a central region 10c when the mounting surface 13 is viewed in a plan view. In FIG. 12, dots are shaded in each area in order to make the range of each area easy to understand.

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 10b is a region on the outer peripheral end side of the instrument main body 10, 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 provided with the light emitting module 20.

In this 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 (apparatus body 10) when the mounting surface 13 is viewed in a plan view. The metal affects the communication range of the wireless communication module 100. Therefore, the wireless communication module 100 is arranged at a position where the portion where the metal is locally lacking or the portion where the amount of metal is locally increased is reduced. For example, the wireless communication module 100 is arranged at a position where surrounding metal objects (mainly the instrument main body 10) are substantially evenly present.

For example, when the circle centered on the wireless communication module 100 is gradually enlarged, the metal-deficient portion (through hole 15a and the portion outside the outer peripheral end of the instrument body 10) existing in the circle is reduced. , The wireless communication module 100 is arranged. Specifically, the wireless communication module 100 is arranged at a position substantially equidistant from each of the through hole 15a 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 arranged in the light emitting module 20 when the mounting surface 13 is viewed in a plan view. Specifically, the wireless communication module 100 is located between the first light emitting element 22 and the second light emitting element 23 on the innermost circumference when the mounting surface 13 is viewed in a plan view. Specifically, the wireless communication module 100 is located on virtual lines L12 and L13 (see FIG. 7) in which the first light emitting elements 22 at the center and the outermost periphery are arranged.

As shown in FIGS. 5 and 6, a part of the wireless communication module 100 is housed inside the instrument main body 10, and the other portion is located between the instrument main body 10 and the outer cover 70. The distance d1 between the front end 137, which 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. In this way, the wireless communication module 100 and the front end 137 are arranged at a predetermined distance. As a result, the shadow of the wireless communication module 100 can be prevented from being generated on the outer cover 70.

The farther the outer cover 70 is from the wireless communication module 100, the less the shadow of the wireless communication module 100 is generated. However, since the distance d between the mounting surface 13 and the outer cover 70 becomes large, the overall thickness of the luminaire 1 becomes large.

Therefore, in the present embodiment, as shown in FIG. 6, the distance d between the mounting surface 13 and the outer cover 70 is at least twice the distance d2 between the mounting surface 13 and the front end 137. It is less than 3 times. The distance d2 is, for example, 20 mm, but is not limited to this. As a result, it is possible to prevent the overall thickness of the luminaire 1 from increasing.

[Antenna characteristics (communication range)]
13 and 14 are diagrams showing antenna characteristics in the horizontal plane (xy plane) of the wireless communication module 100 according to the first and second embodiments, respectively. Specifically, FIGS. 13 and 14, respectively, show the gain of the antenna for a radio signal having a frequency of 2442 MHz. In each figure, the solid line shows 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 diffusivity. 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 diffusivity. 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 shown in FIG. 13, although there is a portion where the gain is reduced to about −10 dBi (a portion surrounded by the alternate long and short dash 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 of the wireless communication module 100 according to the first embodiment on the horizontal plane (xy plane) is about -3 dBi. Although not shown, the average gain on the three planes including the xz plane and the yz plane was about -4 dBi.

Similar to the first embodiment, the wireless communication module 100 according to the second embodiment shown in FIG. 14 also has a portion where the gain is reduced to about -8 dBi (a portion surrounded by the alternate long and short dash line), but the antenna is substantially circular. The 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 of the wireless communication module 100 according to the second embodiment on the horizontal plane (xy plane) is about -3 dBi. Although not shown, the average gain on the three planes including the xz plane and the yz plane was about -4 dBi.

As described above, in both the case where the resin case 130 has light diffusivity as in Example 1 and the case where the resin case 130 has a transparent case as in Example 2, the wireless communication module 100 becomes substantially omnidirectional. , Radio signals can be stably transmitted and received in all directions. Therefore, for example, when the user operates an operation terminal such as a remote controller or a smartphone, the wireless communication module 100 can receive the 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 by comparing Example 1 and Example 2, it can be seen 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, the 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 showing the arrangement of the wireless communication module 100 according to Comparative Example 1. FIG. 15B is a diagram showing antenna characteristics of the wireless communication module 100 according to Comparative Example 1 in a horizontal plane. Specifically, FIG. 15B shows the gain of the antenna for a radio signal with a frequency of 2450 MHz. Here, only the horizontally polarized waves of the radio signal are shown.

As shown in FIG. 15A, the wireless communication module 100 according to Comparative Example 1 is arranged 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 15a, that is, the lateral direction of the substrate 110 is substantially orthogonal to the radial direction of the instrument main body 10.

As shown in FIG. 15B, in the wireless communication module 100 according to Comparative Example 1, there is a portion (a portion surrounded by the alternate long and short dash line) in which the gain is significantly reduced. The portion where the gain is lowered is located in the direction in which the through hole 15a is provided when viewed from the wireless communication module 100. The wireless communication module 100 according to Comparative Example 1 can transmit and receive wireless signals in a substantially stable manner except in the direction in which the through hole 15a is provided.

FIG. 16A is a plan view showing the arrangement of the wireless communication module 100 according to Comparative Example 2. FIG. 16B is a diagram showing antenna characteristics of the wireless communication module 100 according to Comparative Example 2 in a horizontal plane. Specifically, FIG. 16B shows the gain of the antenna for a radio signal with a frequency of 2450 MHz. Here, only the horizontally polarized waves of the radio signal are shown.

As shown in FIG. 16A, the wireless communication module 100 according to Comparative Example 2 is arranged in the immediate vicinity of the through hole 15a in the inner peripheral region 10a, similarly to Comparative Example 1. Further, the wireless communication module 100 is arranged so that the lateral direction of the substrate 110 is substantially parallel to the radial direction of the instrument main body 10.

As shown in FIG. 16B, also in the wireless communication module 100 according to Comparative Example 2, there is a portion (a portion surrounded by the alternate long and short dash line) in which the gain is significantly reduced, as in Comparative Example 1. The portion where the gain is lowered is located in the direction in which the through hole 15a is provided when viewed from the wireless communication module 100. The wireless communication module 100 according to Comparative Example 2 can transmit and receive wireless signals in a substantially stable manner 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 is present 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. As a result, the radio waves interfere with each other and are canceled out, resulting in a decrease in gain.

[Effects, etc.]
As described above, the lighting fixture 1 according to the present embodiment is a metal fixture main body 10 (first fixture main 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 has an annular mounting surface 13 on which the module 20 is mounted, and a wireless communication module 100 that receives a control signal for controlling the light emitting module 20 by performing wireless communication. Reference numeral 10 denotes a central region 10c located between the inner peripheral region 10a on the through hole 15a side, the outer peripheral region 10b on the outer peripheral side, and the inner peripheral region 10a and the outer peripheral region 10b when the mounting surface 13 is viewed in a plan view. The wireless communication module 100 is arranged in the central region 10c.

As a result, the mounting surface 13 of the metal instrument main body 10 exists around the wireless communication module 100. That is, since there is no locally lacking metal around the wireless communication module 100, the directivity of the antenna of the wireless communication module 100 is substantially omnidirectional. Therefore, the wireless communication module 100 can stably receive wireless signals from all directions. As described above, according to the lighting fixture 1 according to the present embodiment, it is possible to suppress the deterioration of the wireless communication performance.

Further, for example, the wireless communication module 100 is provided on the substrate 110 arranged so as to intersect the mounting surface 13 and the exposed portion 111 which is a part of the substrate 110 exposed on the light emitting side from the mounting surface 13. It also has a transmission / reception unit 120 that receives a control signal.

As a result, in the wireless communication module 100, the substrate 110 is arranged so as to intersect the mounting surface 13, and the transmission / reception unit 120 is made of metal as compared with the case where the substrate 110 is mounted on the mounting surface 13. It can be separated from the instrument body 10 of. Therefore, since the influence of metal can be suppressed, the wireless communication performance of 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. Therefore, when the substrate 110 intersects the mounting surface 13, the communication range formed on both sides of the substrate 110 can be effectively used.

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

As a result, a part of the wireless communication module 100 is located on the side opposite to the light emitting side of the mounting surface 13. Specifically, a part of the wireless communication module 100 is housed inside the instrument main body 10. Therefore, the portion of the wireless communication module 100 located on the light emitting side can be reduced, and the light from the light emitting module 20 can be suppressed from being blocked. 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.

Further, for example, the substrate 110 is orthogonal to the mounting surface 13 and intersects the instrument main body 10 in the radial direction.

As a result, the transmission / reception unit 120 can be separated from the instrument main body 10, so that the influence of metal can be suppressed and the wireless communication performance can be improved.

Further, for example, the wireless communication module 100 is arranged in the light emitting module 20 when the mounting surface 13 is viewed in a plan view.

As a result, the light emitting module 20 shines light from the periphery of the wireless communication module 100, so that the generation of shadows on the wireless communication module 100 can be suppressed.

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

As a result, the distance to the portion where the metal is missing (outside the outer peripheral end of the through hole 15a and the instrument main body 10) can be made as large as possible, so that the influence of the missing portion can be suppressed. Therefore, the lighting fixture 1 can further suppress the deterioration of the wireless communication performance.

(Other)
The lighting fixture according to the present invention has been described above based on the above-described embodiment, but the present invention is not limited to the above-described embodiment.

For example, in the above embodiment, the example in which the building material to which the luminaire 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.

Further, in the above embodiment, the light emitting module 20 is an SMD type LED module using an SMD type LED element as the first light emitting element 22 and the second light emitting element 23, but the present invention is not limited to this. .. 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 is composed of 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. It is composed.

Further, for example, in the above embodiment, an example in which the wireless communication module 100 has a transmission / reception function has been shown, but the present invention is not limited to this. For example, the wireless communication module 100 may have only a receiving function.

Further, for example, in the above embodiment, an example in which the resin case 130 is formed by using a resin material having translucency is shown, but the present invention is not limited to this. The resin case 130 may be formed by using a light-shielding material.

Further, for example, in the above-described embodiment, the resin case 130 has been described as an example of the resin cover covering the transmission / reception portion 120 and the exposed portion 111, but the present invention is not limited to this. For example, the resin cover may be a molded resin that covers the transmission / reception portion 120 and the exposed portion 111. Specifically, the resin material before curing may be applied to the transmission / reception portion 120 and the exposed portion 111 so that the edges are rounded and cured. As a result, the thickness of the wireless communication module 100 can be made thinner, so that the generation of shadows can be further suppressed.

In addition, it is realized by arbitrarily combining the components and functions in each embodiment within the range obtained by applying various modifications to each embodiment and the gist of the present invention. Forms are also included in the present invention.

1 Lighting fixture 10 Fixture body 10a Inner peripheral region 10b Outer peripheral region 10c Central region 13 Mounting surface 14 Opening 15a, 15b Through hole 20 Light emitting module (light emitting part)
100 Wireless communication module 110 Board 111 Exposed unit 120 Transmitter / receiver (receiver)

Claims (6)

A metal fixture body having a through hole in the center, and a fixture body having an annular mounting surface on which a light emitting portion is placed so as to surround the through hole.
It is equipped with a wireless communication module that receives a control signal for controlling the light emitting unit by performing wireless communication using radio waves.
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 above-mentioned mounting surface is viewed in a plan view. Have,
The wireless communication module is disposed in the central region,
A part of the wireless communication module is a lighting fixture located on the light emitting side of the light emitting unit. The wireless communication module
A substrate arranged so as to intersect the above-mentioned mounting surface,
The luminaire according to claim 1, further comprising a receiving portion for receiving the control signal, which is provided on an exposed portion which is a part of the substrate exposed to the light emitting side from the above-mentioned mounting surface. The central region is provided with an opening that penetrates the above-mentioned mounting surface.
The luminaire according to claim 2, wherein the wireless communication module is inserted into the opening in a posture in which the substrate intersects the above-mentioned mounting surface. The lighting fixture according to claim 2 or 3, wherein the substrate is orthogonal to the above-mentioned mounting surface and intersects in the radial direction of the fixture body. The lighting fixture according to any one of claims 1 to 4, wherein the wireless communication module is arranged in the light emitting unit when the above-mentioned mounting surface is viewed in a plan view. Any one of claims 1 to 5, wherein the wireless communication module is arranged at a position substantially equidistant from each of the through hole and the outer peripheral end of the instrument body in the radial direction of the instrument body. Lighting fixtures as described in the section.

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