JP2024065266A - Lighting fixture - Google Patents

Abstract

To provide a lighting fixture with an excellent radio performance.SOLUTION: A lighting fixture 1 comprises: a light source part 10; a power supply part 20 for supplying power to the light source part 10; a radio module 60 performing radio communication relating to control of at least the light source part 10; a metallic long support member 30 supporting the light source part 10; and a metallic fixture body 40 in which a space for housing the radio module 60 is formed in combination with the support member 30. At least one of the support member 30 and the fixture body 40 has a slit for radio communication with outside. A center of the slit is positioned nearer an end of the support member 30 than a center of the power supply part 20 in a longitudinal direction of the support member 30.SELECTED DRAWING: Figure 7

Description

The present invention relates to a lighting fixture.

A long lighting fixture is known that includes a light source unit, a power supply unit for supplying power to the light source unit, and a metal support member that supports the light source unit and the power supply unit. A lighting fixture of this type that has a wireless communication function is known (for example, Patent Document 1). A lighting fixture with a wireless communication function includes a wireless module that can perform wireless communication with an external device. The wireless module and the power supply unit are arranged, for example, on the back side of the support member (the side opposite the light source unit).

JP 2017-33709 A

However, conventional lighting fixtures with wireless communication capabilities have the problem of poor wireless performance.

The present invention was made in consideration of these problems, and aims to provide a lighting fixture with excellent wireless performance.

In order to achieve the above object, one aspect of the lighting fixture according to the present invention comprises a light source unit, a power supply unit for supplying power to the light source unit, a wireless module for performing wireless communication related to at least the control of the light source unit, a metallic elongated support member for supporting the light source unit, and a metallic fixture body that is combined with the support member to form a space for storing the wireless module, and at least one of the support member and the fixture body has a slit for performing the wireless communication with the outside, and the center of the slit is located closer to the end of the support member than the center of the power supply unit in the longitudinal direction of the support member.

This allows you to obtain lighting fixtures with excellent wireless performance.

1 is a perspective view of a lighting fixture according to an embodiment; 1 is an exploded perspective view of a lighting fixture according to an embodiment; 1 is a cross-sectional view of a lighting fixture according to an embodiment when cut along a plane parallel to the short side direction of the lighting fixture. FIG. 4 is a cross-sectional perspective view of the lighting fixture taken along the cross section of FIG. 3 . 1 is a cross-sectional view of a lighting fixture according to an embodiment when cut along a plane parallel to the longitudinal direction of the lighting fixture. FIG. 2 is an enlarged view of the periphery of an end portion in the longitudinal direction of the instrument body. FIG. 2 is a top view of a lighting fixture according to an embodiment. FIG. 8 is an enlarged view of an area VIII surrounded by a dashed line in FIG. 7 . FIG. 2 is a perspective view of a wireless unit in a lighting device according to an embodiment when viewed from one direction. 13 is a perspective view of the wireless unit in the lighting device according to the embodiment when viewed from another direction. FIG. FIG. 2 is an exploded perspective view of a wireless unit in the lighting device according to the embodiment. FIG. 4 is an exploded perspective view showing a fixing structure of a wireless unit and a power supply unit in a lighting device according to an embodiment. FIG. 13 is a diagram showing a state in which the power supply unit and the wireless unit are fixed. 13A and 13B are diagrams showing a state in which the power supply unit to which the wireless unit is fixed is fixed to a support member. 11 is a diagram showing the relationship between the length of a slit and the gain of a wireless signal in a lighting device according to an embodiment. FIG. FIG. 11 is a cross-sectional view of a lighting fixture according to a modified example.

The following describes embodiments of the present invention with reference to the drawings. Note that each embodiment described below shows a specific example of the present invention. Therefore, the numerical values, components, the arrangement and connection of the components, the steps and the order of the steps, etc. shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims that show the highest concept of the present invention will be described as optional components.

Note that each figure is a schematic diagram and is not necessarily a precise illustration. In addition, in each figure, the same reference numerals are used for substantially the same configuration, and duplicated explanations are omitted or simplified. In each figure, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional Cartesian coordinate system, and in this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis (parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are mutually orthogonal, and both are orthogonal to the Z-axis. Note that in this specification, the terms "up" and "down" do not necessarily refer to the upward direction (vertically upward) and downward direction (vertically downward) in absolute spatial recognition.

(Embodiment)
First, the configuration of a lighting fixture 1 according to an embodiment will be described with reference to Figs. 1 to 5. Fig. 1 is a perspective view of a lighting fixture 1 according to an embodiment. Fig. 2 is an exploded perspective view of the lighting fixture 1. Fig. 3 is a cross-sectional view of the lighting fixture 1 taken along a plane parallel to the short side direction of the lighting fixture 1. Fig. 4 is a cross-sectional perspective view of the lighting fixture 1 taken along the cross section of Fig. 3. Fig. 5 is a cross-sectional view of the lighting fixture 1 taken along a plane parallel to the longitudinal direction of the lighting fixture 1. Fig. 5 shows a portion of one end side of the lighting fixture 1 in the longitudinal direction.

As shown in FIG. 1, the lighting fixture 1 is an elongated base light overall, and emits a line-shaped illumination light. The lighting fixture 1 emits light of a predetermined color, such as white light, as the illumination light. The lighting fixture 1 in this embodiment is a dimmable and color-adjustable lighting fixture that can adjust the brightness and color of the illumination light. For example, the lighting fixture 1 can emit white light of any color temperature in the range from daylight color to incandescent color (6500K to 2700K) as the illumination light. Furthermore, in this embodiment, the lighting fixture 1 is attached to a wiring duct 2 (lighting duct) for use.

The wiring duct 2 is an example of a mounting member to which the lighting fixture 1 is attached, and is installed on construction materials such as ceilings, beams, or walls in buildings such as facilities, stores, or homes. The lighting fixture 1 is supplied with AC power (system power, etc.) from the wiring duct 2 by being attached to the wiring duct 2. Note that the lighting fixture 1 is not limited to being installed on the wiring duct 2, and the building's construction material may also be used as the mounting member. In this case, the lighting fixture 1 is installed directly on the building's construction material.

The lighting fixture 1 is an LED lighting fixture that uses an LED (Light Emitting Diode) as a light source. As shown in Figs. 2 and 3, the lighting fixture 1 includes a light source unit 10, a power supply unit 20, a support member 30, a fixture body 40, and a cover member 50. The support member 30, the fixture body 40, and the cover member 50 form the outer shell of the lighting fixture 1. The support member 30 is disposed between the light source unit 10 and the power supply unit 20. In this embodiment, the lighting fixture 1 is installed in the wiring duct 2 so that the light source unit 10 is on the floor side and the power supply unit 20 is on the ceiling side.

The lighting fixture 1 is also a lighting fixture with wireless communication capabilities. Therefore, the lighting fixture 1 further includes a wireless unit 60 including a wireless module 61 so that it can perform wireless communication with the outside. For example, the lighting fixture 1 can perform wireless communication with an external device such as a wireless remote control (radio remote control) that has wireless communication capabilities.

The light source unit 10 emits light of a predetermined color. In this embodiment, the light source unit 10 emits white light as the illumination light for the lighting fixture 1. The light source unit 10 is also an elongated line light source, and emits line-shaped light. As described above, the lighting fixture 1 is a dimmable and color-adjustable lighting fixture, so the white light emitted by the light source unit 10 is controlled to have a light color of any color temperature in the range from daylight color to incandescent color.

The light source unit 10 is an LED module that uses LEDs, and as shown in Figures 3 to 5, has a substrate 11 that is a light source substrate, and an LED element 12 arranged on the substrate 11.

The substrate 11 is a mounting substrate for mounting the LED element 12. In this embodiment, the substrate 11 is formed in a substantially rectangular shape that is elongated in the longitudinal direction (Y-axis direction) of the support member 30. The substrate 11 is, for example, a printed wiring board on which metal wiring is formed in a predetermined pattern. As the base material constituting the substrate 11, a resin substrate made of an insulating resin material, a ceramic substrate made of a sintered body of a ceramic material such as alumina, a metal base substrate obtained by applying an insulating coating to the surface of a metal substrate made of a metal material such as aluminum or copper, etc. are used. The substrate 11 may be a rigid substrate or a film-like flexible substrate.

The metal wiring formed on the substrate 11 is electrically connected to the power supply unit 21 of the power supply section 20. In this case, the electrodes or connector terminals formed on the substrate 11 and the power supply unit 21 are connected by electric wires such as lead wires. The electric wires connecting the substrate 11 and the power supply unit 21 are, for example, inserted into through holes provided in the support member 30.

The substrate 11 is placed on the support member 30. The substrate 11 has a first surface on which the LED elements 12 are mounted, and a second surface facing away from the first surface. The first surface of the substrate 11 is the surface facing the cover member 50, and the second surface of the substrate 11 is the surface facing the support member 30.

The LED elements 12 are arranged on the substrate 11. Specifically, a plurality of LED elements 12 are arranged on the first surface of the substrate 11. As shown in FIG. 5, in this embodiment, the plurality of LED elements 12 are mounted in a linear row along the longitudinal direction of the substrate 11 at a predetermined interval. Specifically, the plurality of LED elements 12 are mounted over substantially the entire longitudinal length of the substrate 11. The plurality of LED elements 12 may be mounted in multiple rows along the longitudinal direction of the substrate 11, rather than in a single row. The plurality of LED elements 12 emit light by a direct current supplied from the power supply device 21 via an electric wire connecting the power supply device 21 and the substrate 11. The light emitted by the LED elements 12 (light source unit 10) passes through the cover member 50 and is emitted to the outside of the lighting fixture 1.

Each of the multiple LED elements 12 is an individually packaged surface mount device (SMD) type LED light source. Therefore, the light source unit 10 is an SMD type LED module.

The SMD type LED element 12 comprises a white resin or ceramic container (package), an LED chip (bare chip) placed in the container, and a sealing member that seals the LED chip. In this embodiment, the LED element 12 is a white LED light source that emits white light. In this case, for example, a blue LED chip that emits blue light when powered is used as the LED chip, and a silicone resin (phosphor-containing resin) that contains a yellow phosphor such as YAG is used as the sealing member filled in the container.

The light source unit 10 configured in this manner is disposed on the support member 30. The light source unit 10 is disposed on one side of the support member 30, which is the first side. The first side of the support member 30 is the front side, which in this embodiment is the floor side. On the other hand, the other side of the support member 30 is the second side, which is the back side, which in this embodiment is the ceiling side.

The light source unit 10 may be a COB (chip on board) type LED module. A COB type light source module has multiple LED chips directly mounted on the substrate 11 and a sealing member (phosphor-containing resin) that seals the multiple LED chips individually or collectively.

The power supply unit 20 is a power supply unit for supplying power to the light source unit 10. As shown in FIG. 5, the power supply unit 20 has a power supply device 21 that generates power for causing the light source unit 10 to emit light, and a power supply case 22 that houses the power supply device 21.

The power supply device 21 is composed of a power supply circuit that generates power for emitting light from the LED elements 12 of the light source unit 10. For example, the power supply device 21 converts AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectifying, smoothing, stepping down, etc. The DC power generated by the power supply device 21 is supplied to the light source unit 10 via an electric wire. Note that the power supply device 21 may be combined with a dimming circuit, a color adjustment circuit, etc.

As shown in FIG. 5, the power supply device 21 has a circuit board 21a and a plurality of circuit elements 21b mounted on the circuit board 21a. The circuit board 21a is, for example, a printed wiring board on which metal wiring is formed in a predetermined pattern. Each of the plurality of circuit elements 21b mounted on the circuit board 21a is an electronic component for emitting light from the light source unit 10, and is, for example, a capacitance element (electrolytic capacitor, ceramic capacitor, etc.), a resistance element (resistor, etc.), a rectifier circuit element, a coil element, a choke coil (choke transformer), a noise filter, a diode, an integrated circuit element (IC), or a semiconductor element (FET, etc.).

The power supply case 22 is a housing (box) made of metal or insulating resin that houses the circuit board 21a on which the circuit elements 21b are mounted. In this embodiment, the power supply case 22 is a metal case made of metal. The power supply case 22 is formed into a predetermined shape by performing a press process or the like on a metal plate. Specifically, the power supply case 22 is an elongated, approximately rectangular parallelepiped housing with an opening.

The power supply unit 20 configured in this manner is disposed on the other side of the support member 30, which is the second side (the side opposite the light source unit 10 side). In other words, the power supply unit 20 is disposed on the back side of the support member 30. In this embodiment, the power supply unit 20 is disposed so that the opening of the power supply case 22 faces the support member 30.

The power supply unit 20 extends in the longitudinal direction of the support member 30 so as to straddle the longitudinal center of the support member 30. Specifically, the power supply case 22 extends in the longitudinal direction of the support member 30 so as to straddle the longitudinal center of the support member 30. In this embodiment, the longitudinal center of the power supply unit 20 and the longitudinal center of the support member 30 are almost the same, but this is not limited to this. For example, the power supply unit 20 may be arranged biased to one of both ends in the longitudinal direction of the support member 30. The longitudinal length of the power supply unit 20 occupies about half of the longitudinal length of the support member 30, but this is not limited to this. For example, the longitudinal length of the power supply unit 20 may be 1/2 or less of the longitudinal length of the support member 30 (for example, about 3/1 or 4/1), or may be 1/2 or more of the longitudinal length of the support member 30.

The power supply unit 20 is fixed to the support member 30. As shown in FIG. 2, in this embodiment, the power supply unit 20 is fixed to the support member 30 by screws. The method of fixing the power supply unit 20 to the support member 30 will be described later. Note that the power supply unit 20 may be fixed to the support member 30 by a fixing member other than a screw.

As shown in Figures 3 to 5, the support member 30 is a long, metallic base member that supports the light source unit 10. In this embodiment, the support member 30 supports not only the light source unit 10, but also the power supply unit 20 and the cover member 50.

The support member 30 is an elongated metal member extending in the longitudinal direction (Y-axis direction) of the lighting device 1. In this embodiment, the support member 30 is made of an aluminum alloy and is formed, for example, by extrusion molding. The material of the support member 30 is not limited to an aluminum alloy, and other metal materials may be used. Furthermore, the method of forming the support member 30 is not limited to extrusion molding. For example, the support member 30 may be formed into a predetermined shape by performing sheet metal processing such as roll forming and/or press working on a metal plate.

As shown in FIG. 3, the support member 30 has a generally U-shaped cross section and includes a bottom portion 31 and a pair of side portions 32 erected at the ends of the bottom portion 31. The bottom portion 31 and the pair of side portions 32 are flat and have the same thickness. In this embodiment, the bottom portion 31 and the pair of side portions 32 are each long and rectangular. One of the pair of side portions 32 is provided at one end of the bottom portion 31 in the short direction, and the other of the pair of side portions 32 is provided at the other end of the bottom portion 31 in the short direction.

The bottom surface portion 31 is the portion where the light source unit 10 is attached. Specifically, the light source unit 10 is attached to the outside of the bottom surface portion 31 (the cover member 50 side). The substrate 11 of the light source unit 10 is placed on the outside surface of the bottom surface portion 31. The cover member 50 is also attached to the bottom surface portion 31. Specifically, the cover member 50 is attached to the short end of the bottom surface portion 31.

The pair of side sections 32 are parts that form the outer shell of the lighting fixture 1. The pair of side sections 32 sandwich the power supply unit 20 and the wireless unit 60. The fixture body 40 is fixed to the pair of side sections 32.

As shown in FIG. 3, the instrument body 40 is mated with the support member 30 to form a space for housing the power supply unit 20 and the wireless unit 60. The instrument body 40 is a metal member made of metal, and the support member 30 and the instrument body 40 are mated to form a cylindrical metal housing surrounded on all sides. The power supply unit 20 and the wireless unit 60 are stored in the internal space of this metal housing. In other words, the power supply device 21 of the power supply unit 20 and the wireless module 61 of the wireless unit 60 are stored in the space formed by the instrument body 40 and the support member 30 being mated.

The instrument body 40 is fixed to the support member 30 so as to cover the opening of the support member 30, which has a cross-sectional shape that is approximately U-shaped. The instrument body 40 is fixed to the support member 30 so that this opening faces the support member 30.

In this embodiment, the device body 40 has a cross-sectional shape that is approximately U-shaped and has an opening. Specifically, the device body 40 has a top surface portion 41 and a pair of side surfaces 42 that stand on the ends of the top surface portion 41. The top surface portion 41 and the pair of side surfaces 42 are flat and have the same thickness. In this embodiment, each of the top surface portion 41 and the pair of side surfaces 42 is a long rectangular shape. One of the pair of side surfaces 42 is provided at one end of the top surface portion 41 in the short direction, and the other of the pair of side surfaces 42 is provided at the other end of the top surface portion 41 in the short direction.

The top surface portion 41 is provided to cover the opening of the support member 30. The pair of side surface portions 42 face the pair of side surface portions 32 of the support member 30. Specifically, the pair of side surface portions 42 are in contact with the pair of side surface portions 32 of the support member 30.

As shown in Figures 3 and 4, the instrument body 40 has a slit 40a. As shown in Figure 6, the slit 40a extends along the longitudinal direction of the instrument body 40. Figure 6 is an enlarged view of the periphery of the longitudinal end of the instrument body 40. In this embodiment, the slit 40a is linear and extends parallel to the longitudinal direction (Y-axis direction) of the instrument body 40.

The slits 40a do not have to extend parallel to the longitudinal direction of the instrument body 40, but may extend parallel to a direction perpendicular to the longitudinal direction of the instrument body 40 (short direction), or may be inclined with respect to the longitudinal direction of the instrument body 40.

The position of the slit 40a in the fixture body 40 will now be described with reference to Figs. 7 and 8. Fig. 7 shows a top view of the lighting fixture 1 according to the embodiment. Fig. 8 is an enlarged view of the area VIII surrounded by the dashed line in Fig. 7. In Figs. 7 and 8, (a) shows the fixture body 40 attached to the support member 30, and (b) shows the fixture body 40 removed from (a).

As shown in Figures 7 and 8, the center of the slit 40a is located closer to the end of the support member 30 than the center of the power supply unit 20 in the longitudinal direction of the support member 30. Specifically, the entire slit 40a is located closer to the end of the support member 30 than the power supply unit 20 in the longitudinal direction of the support member 30. In other words, the slit 40a is formed so as to be located outside the power supply unit 20, based on the longitudinal center of the support member 30 (= the longitudinal center of the lighting fixture 1). More specifically, the slit 40a is formed closer to the longitudinal end of the support member 30 than the power supply case 22 of the power supply unit 20.

The slit 40a is an opening for wireless communication with the outside. In this embodiment, the slit 40a functions as a slot antenna and is electromagnetically coupled to the antenna of the wireless module 61. For example, when a wireless signal transmitted from the outside is received, the wireless signal generates an electric field in the short direction of the slit 40a. As a result, the slit 40a functions as an antenna and radiates the received wireless signal toward the antenna of the internal wireless module 61. Similarly, when the antenna of the wireless module 61 transmits a wireless signal, the wireless signal generates an electric field in the short direction of the slit 40a. As a result, the slit 40a functions as an antenna and radiates the wireless signal to the outside. The slit 40a, which is a slot antenna, passes a wireless signal (electromagnetic wave) radiated from the antenna of the wireless module 61 by excitation of the antenna. For this reason, it is preferable that the slit 40a extends so as to be perpendicular to the excitation direction of the antenna of the wireless module 61.

In order to make the slit 40a function as a slot antenna, it is preferable that the antenna of the wireless module 61 is located near the slit 40a. In other words, it is preferable that the slit 40a is formed near the wireless module 61.

3, the slit 40a is formed in a portion of the fixture body 40 exposed from the support member 30 in the vicinity of the wireless module 61. Specifically, the slit 40a is provided in the top surface 41 of the fixture body 40. For example, the slit 40a is provided at an end of the top surface 41 in the short side direction (width direction) of the fixture body 40. In this embodiment, the slit 40a is formed from the top surface 41 to the side surface 42. That is, as shown in FIG. 3, the slit 40a is formed so as to cut out a corner of the fixture body 40, which has a cross-sectional shape that is approximately U-shaped. Therefore, the slit 40a is located in the diagonal direction of the wireless module 61 in a cross-sectional view (XZ cross-section) of the lighting fixture 1 in the short side direction of the support member 30. Specifically, the slit 40a is located diagonally above the wireless module 61.

Moreover, multiple slits 40a are formed in the device body 40. This can improve the wireless performance (reception sensitivity) of the wireless module 61. Specifically, as shown in Figs. 6 and 8, two slits 40a are formed in the device body 40. At least a portion of the two slits 40a faces each other in the short side direction (X-axis direction) of the device body 40.

As shown in FIG. 8, at least one of the two slits 40a may face the wireless module 61 when viewed from above. Specifically, the slit 40a may face the substrate 61a of the wireless module 61 when viewed from above. This can improve the wireless performance (reception sensitivity) of the wireless module 61. In this embodiment, both of the two slits 40a face the substrate 61a when viewed from above.

As shown in Figs. 1 and 2, the fixture body 40 is provided with an attachment member 70 for attaching the lighting fixture 1 to the wiring duct 2. In this embodiment, two attachment members 70 are provided along the longitudinal direction of the fixture body 40. Each attachment member 70 has a guide 71 that is inserted into a groove in the duct rail of the wiring duct 2, and a lever 72 on which an engagement portion is formed that engages with the duct rail of the wiring duct 2 when rotated. One of the two attachment members 70 has a connection structure for electrically connecting the wiring duct 2 and the power supply unit 20.

When attaching the lighting fixture 1 to the wiring duct 2, the guides 71 of the two mounting members 70 are inserted into the grooves of the duct rail of the wiring duct 2, and the levers 72 of the two mounting members 70 are rotated to engage the locking portions of the levers 72 with the duct rail. This allows the lighting fixture 1 to be held in the wiring duct 2, and AC power is supplied from the wiring duct 2 to the lighting fixture 1. The lighting fixture 1 can be removed from the wiring duct 2 by rotating the levers 72 in the reverse direction.

As shown in Figures 3 to 5, the cover member 50 covers the light source unit 10. In this embodiment, the cover member 50 covers the light source unit 10 as well as the support member 30. The cover member 50 is formed in an elongated shape, similar to the light source unit 10 and the support member 30.

The cover member 50 is attached to the support member 30. Specifically, the cover member 50 is attached to the widthwise end of the bottom surface portion 31 of the support member 30.

The cover member 50 is an example of a translucent cover that has translucency, and transmits light emitted from the LED elements 12 of the light source unit 10. In this embodiment, the cover member 50 is a diffusion cover that not only has translucency but also has diffusivity. Therefore, the light from the LED elements 12 that enters the cover member 50 passes through the cover member 50 while being diffused (scattered) by the cover member 50.

The cover member 50 has a substantially U-shaped cross section, and as shown in FIG. 3, has a main surface portion 51 and a pair of side portions 52 erected on the ends of the main surface portion 51. The main surface portion 51 and the pair of side portions 52 are flat and have the same thickness. In this embodiment, the main surface portion 51 and the pair of side portions 52 are each rectangular and elongated. One of the pair of side portions 52 is provided at one end of the main surface portion 51 in the short direction (X-axis direction), and the other of the pair of side portions 52 is provided at the other end of the main surface portion 51 in the short direction. The light emitted from the LED 12 passes through the main surface portion 51 and the side portions 52 and is emitted to the outside.

As shown in FIG. 3, the length (width) of the cover member 50 in the short side direction is the same as the length (width) of the support member 30 in the short side direction. Therefore, the width of the main surface portion 51 of the cover member 50 is the same as the width of the bottom surface portion 31 of the support member 30, and the pair of side surface portions 52 of the cover member 50 and the pair of side surface portions 32 of the support member 30 are flush with each other.

The cross-sectional shape of the cover member 50 is not limited to an approximately U-shape. For example, the cross-sectional shape of the cover member 50 may be curved in an arc. In this case, the cross-sectional shape of the cover member 50 may be a flattened approximately semi-cylindrical shape or a cylindrical shape, etc.

The cover member 50 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as a glass material. In this embodiment, the cover member 50 is made of a translucent resin material. In this case, the cover member 50 can be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 50 can be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. As the light diffusing material, light reflective fine particles such as silica particles can be used. The cover member 50 can be formed, for example, by extrusion molding.

The cover member 50 may be configured by forming a milky light diffusion film containing a light diffusion material on the surface (inner or outer surface) of the transparent cover, rather than dispersing a light diffusion material inside. The cover member 50 may also be configured to have light diffusion properties by performing a diffusion process, rather than using a light diffusion material. For example, the cover member 50 may be configured to have light diffusion properties by forming minute irregularities on the surface of the transparent cover by performing a surface treatment such as embossing, or by printing a dot pattern on the surface of the transparent cover. Even when the cover member 50 is diffusion processed, it may further contain a light diffusion material to enhance light diffusion properties.

A long cylindrical body is formed by fixing the cover member 50 and the support member 30. The light source unit 10 is stored inside this cylindrical body. As shown in Figures 1 and 2, end caps 80 are attached to both ends in the longitudinal direction of the cylindrical body formed by the cover member 50 and the support member 30.

The end cap 80 is provided to close the open end of the cylinder formed by the support member 30 and the cover member 50. In other words, the end cap 80 is attached to the cylinder so as to cover the open end of the cylinder formed by the support member 30 and the cover member 50, closing the open end of the cylinder. Note that the end cap 80 may not completely close the open end of the cylinder formed by the support member 30 and the cover member 50, and there may be a small gap between the end cap 80 and the support member 30.

The end caps 80 are attached to both ends of the cover member 50 in the longitudinal direction. In other words, the end caps 80 are cover ends provided at the ends of the cover member 50. The end caps 80 and the cover member 50 may be fixed with an adhesive, or may be fixed with a locking structure such as a claw portion or a recess formed on the end cap 80 and the cover member 50. The end caps 80 are made of, for example, a resin material. The end caps 80 may or may not be translucent.

As shown in Figures 3 to 5, the wireless unit 60 has a wireless module 61 and a wireless case 62 that houses the wireless module 61. As shown in Figure 5, the wireless module 61 is electrically connected to the power supply device 21 of the power supply unit 20 by a connector line 65.

The wireless module 61 is a wireless communication module for performing wireless communication with the outside. The wireless module 61 performs wireless communication related to at least the control of the light source unit 10. For example, the wireless module 61 receives a wireless signal for controlling the light emission state of the light source unit 10. Specifically, the wireless module 61 receives a wireless signal for turning the light source unit 10 on and off, adjusting the brightness, and adjusting the color. The wireless signal received by the wireless module 61 is transmitted to the power supply device 21 of the power supply unit 20 via the connector line 65. This allows the power supply device 21 to control the light source unit 10.

The wireless module 61 performs wireless communication based on a wireless communication standard such as Wi-Fi (registered trademark), Bluetooth (registered trademark), or ZigBee (registered trademark). For example, the frequency of the wireless signal received by the wireless module 61 is, but is not limited to, the 2.4 GHz band or the 920 MHz band.

The wireless signal received by the wireless module 61 is transmitted from an external device such as a wireless remote control having a wireless transmission function. The wireless remote control may be a mobile terminal such as a smartphone, or a controller fixed to a wall or the like. The wireless remote control that performs wireless communication with the wireless module 61 is operated by a user. When the user operates the wireless remote control, a wireless signal for controlling the lighting fixture 1 is transmitted from the wireless remote control.

The wireless module 61 may perform wireless communication other than wireless communication related to the control of the light source unit 10. For example, the wireless module 61 may receive and transmit wireless signals (wireless signals for pairing) for pairing the wireless remote control with the lighting fixtures 1. In this case, the wireless module 61 receives wireless signals (wireless signals for collective lighting control) for simultaneously controlling multiple lighting fixtures 1 belonging to one group, where the multiple lighting fixtures 1 have been paired with the wireless remote control.

The detailed configuration of the wireless unit 60 will now be described with reference to Figs. 9 to 11. Fig. 9 is a perspective view of the wireless unit 60 as viewed from one direction, and Fig. 10 is a perspective view of the wireless unit 60 as viewed from another direction. Fig. 11 is an exploded perspective view of the wireless unit 60.

As shown in Figures 9 to 11, the wireless module 61 has a board 61a which is a wireless board, an antenna 61b which receives wireless signals, and an electronic component 61c (such as an IC) for processing the wireless signal received by the antenna 61b. There may be one or more electronic components 61c, which are mounted on the board 61a.

The substrate 61a is, for example, a printed wiring board on which metal wiring is formed in a predetermined pattern. The antenna 61b is a pattern antenna formed in a predetermined pattern on one side of the substrate 61a. The antenna 61b is, for example, a metal wiring such as copper.

For example, the antenna 61b has a radiating conductor made of metal wiring formed in a meandering shape, and a rectangular grounded ground conductor. The boundary between the radiating conductor and the ground conductor is the power supply point. The length of the radiating conductor is preferably formed to a length corresponding to the frequency of wireless communication (wavelength of electromagnetic waves). For example, if the wavelength of the wireless signal is λ, the length of the radiating conductor is preferably approximately λ/4. Note that the shape of the radiating conductor is not limited to a meandering shape, and may be linear, such as a straight line, L-shape, or spiral shape. The shape of the ground conductor is also not limited to a rectangular shape.

The antenna 61b configured in this manner is electromagnetically coupled to the slit 40a, which is a slot antenna. In other words, the antenna 61b is an antenna for primary excitation, and the slit 40a functions as a secondary antenna. The antenna 61b receives and transmits wireless signals via the slit 40a. The wireless signal received by the antenna 61b is converted into a predetermined control signal (electrical signal) by a processing circuit formed by electronic components 61c, and is transmitted to the power supply device 21 of the power supply unit 20 via the connector wire 65.

The wireless module 61 is fixed to the wireless case 62. Specifically, the inner surface of the wireless case 62 has a clamping portion that clamps an end of the substrate 61a of the wireless module 61, and the wireless module 61 is held in the wireless case 62 by sliding the substrate 61a so that the end of the substrate 61a is clamped in the clamping portion of the wireless case 62.

The wireless case 62 is made of a resin material that allows wireless signals to pass through. Examples of the resin material that can be used to make the wireless case 62 include polycarbonate (PC) and polybutylene terephthalate (PBT). The wireless case 62 is in the shape of a cylindrical box with a bottom and an opening.

The wireless unit 60 configured in this manner is arranged on the second surface side, which is the other surface side, of the support member 30, as in the case of the power supply unit 20, as shown in FIG. 5. That is, the wireless module 61 is arranged on the second surface side of the support member 30. In this embodiment, the wireless module 61 is arranged so that the antenna 61b faces the side surface portion 32 of the support member 30, as shown in FIG. 3. That is, the wireless module 61 is arranged in a vertical position so that the board 61a stands on the bottom surface portion 31 of the support member 30. In addition, the wireless case 62 that houses the wireless module 61 is arranged so that the opening of the wireless case 62 faces the bottom surface portion 31 of the support member 30.

In this embodiment, the wireless unit 60 is adjacent to the power supply unit 20. In other words, the wireless module 61 and the wireless case 62 are adjacent to the power supply unit 20. Specifically, the wireless unit 60 and the power supply unit 20 are aligned along the longitudinal direction of the support member 30.

As shown in Figs. 2 and 5, the wireless unit 60 is fixed to the power supply unit 20. Specifically, the wireless case 62 is fixed to the power supply unit 20. In this embodiment, the wireless case 62 is provided so as to abut against the power supply unit 20. Specifically, the wireless case 62 is fixed to the power supply case 22 while abutting against the power supply case 22 of the power supply unit 20.

The wireless case 62 is fixed only to the power supply unit 20, and is not fixed to the support member 30. Furthermore, the wireless case 62 is not in contact with the support member 30, and is floating above the bottom surface 31 of the support member 30. In other words, the open end of the wireless case 62 is not in contact with the surface of the second side of the support member 30. Furthermore, the wireless module 61 stored in the wireless case 62 is also floating above the support member 30. In other words, the wireless module 61 is stored in the wireless case 62 in a state where it is floating above the support member 30.

In this way, by floating the wireless module 61 and the wireless case 62 from the support member 30, the wireless unit 60 and the power supply unit 20, which are fixed to each other by the screws 91, can be easily attached to the support member 30. Furthermore, by floating the wireless module 61 and the wireless case 62 from the support member 30, the wireless module 61 and the wireless case 62 do not come into contact with the support member 30, so that it is possible to suppress the generation of abnormal noise caused by contact between the board 61a of the wireless module 61 and the wireless case 62 and the support member 30.

As shown in FIG. 8, the wireless unit 60 is fixed to the power supply unit 20 by a screw 91 (first screw). Specifically, the wireless unit 60 is fixed to the power supply case 22 by screwing a part of the wireless case 62 to the power supply case 22 of the power supply unit 20 by the screw 91.

The power supply unit 20 is fixed to the support member 30 by a screw 92 (second screw). Specifically, the power supply unit 20 is fixed to the support member 30 by screwing a part of the power supply case 22 to the support member 30 by the screw 92. The screws 91 and 92 are examples of fixing members.

Here, the fixing structure between the power supply unit 20 and the support member 30 and the fixing structure between the wireless unit 60 and the power supply unit 20 will be described in detail with reference to FIG. 12. FIG. 12 is an exploded perspective view showing the fixing structure between the wireless unit 60 and the power supply unit 20.

As shown in FIG. 12, the power supply case 22 of the power supply unit 20 is a long, sheet metal housing, and has a first plate portion 22a that forms the bottom plate of the power supply case 22, a pair of second plate portions 22b that stand on the first plate portion 22a and extend in the longitudinal direction of the support member 30, and a pair of third plate portions 22c that stand on the first plate portion 22a and are connected to the longitudinal ends of the pair of second plate portions 22b.

The lower end of the third plate portion 22c is provided with a protruding piece 22d that protrudes outward. The protruding piece 22d is formed with a screw hole 22e through which a screw 92 is inserted to fix the power supply case 22 to the support member 30.

The wireless case 62 of the wireless unit 60 is adjacent to the power supply case 22. For this reason, the wireless case 62 has a shape that avoids the screw 92 so that the screw 92 does not interfere with the wireless case 62 when the power supply case 22 is fixed to the support member 30.

Specifically, as shown in FIG. 8, the wireless case 62 has a cutout portion 62a formed in a shape that avoids the screw 92 when viewed from above the lighting device 1 (when viewed from a direction in which the wireless case 62 and the support member 30 overlap).

The cutout portion 62a of the wireless case 62 is formed at a position that overlaps with the screw hole 22e of the protruding piece 22d of the power supply case 22. In other words, by providing the cutout portion 62a in the wireless case 62, the screw hole 22e of the protruding piece 22d of the wireless case 62 is exposed when viewed from above the lighting device 1. As shown in Figures 9 to 11, the cutout portion 62a is a recess formed by partially recessing part of the outline of the wireless case 62.

As shown in FIG. 8, the cutout portion 62a may have a shape that surrounds at least a portion of the screw 92 when viewed from above the wireless case 62. In this case, the cutout portion 62a may have a shape that surrounds the screw 92 from at least two directions or with two straight lines when viewed from above the wireless case 62. In other words, in this case, the cutout portion 62a may have a shape that surrounds the screw 92 from three or more directions or with three or more straight lines when viewed from above the wireless case 62. In this embodiment, the shape of the cutout portion 62a when viewed from above is approximately trapezoidal, and surrounds the screw 92 from three directions (with three straight lines).

The shape of the cutout portion 62a when viewed from above is not limited to a substantially trapezoidal shape. For example, the shape of the cutout portion 62a when viewed from above may be a triangle or a part of a circle. Therefore, the cutout portion 62a may be shaped to surround the screw 92 with a curved line rather than a straight line when viewed from above the wireless case 62.

As shown in FIG. 12, a part of the wireless case 62 protrudes toward the power supply case 22. This protruding portion of the wireless case 62 is overlapped with the first plate portion 22a of the power supply case 22. The protruding portion of the wireless case 62 is formed with a screw hole 62b through which a screw 91 is inserted to fix the wireless case 62 to the power supply case 22.

The direction in which the screw 91 for fixing the wireless case 62 is screwed into the power supply case 22 and the direction in which the screw 92 for fixing the power supply case 22 is screwed into the support member 30 are the same, and in this embodiment, are the Z-axis direction. This makes it easy to fix the power supply unit 20 and the wireless unit 60 to the support member 30. In other words, the ease of assembly of the lighting fixture 1 can be improved.

Next, a method for fixing the power supply unit 20 and the wireless unit 60 to the support member 30 will be described using Figs. 13 and 14 while also referring to Fig. 12. Fig. 13 is a diagram showing the state when the power supply unit 20 and the wireless unit 60 are fixed. Fig. 14 is a diagram showing the state when the power supply unit 20 with the wireless unit 60 fixed thereto is fixed to the support member 30.

First, the power supply unit 20 and the wireless unit 60 are fixed. Specifically, as shown in FIG. 12, a screw 91 is inserted into the screw hole 62b of the wireless case 62 in which the wireless module 61 is housed, and the screw 91 is screwed into the screw hole of the first plate portion 22a of the power supply case 22. As a result, as shown in FIG. 13, the wireless case 62 in which the wireless module 61 is housed can be fixed to the power supply case 22 in which the power supply device 21 is housed. That is, the wireless unit 60 can be fixed to the power supply unit 20. In this way, by fixing the wireless unit 60 and the power supply unit 20 with the screw 91, the wireless unit 60 and the power supply unit 20 can be integrated. This allows the wireless unit 60 and the power supply unit 20 to be easily attached to the support member 30. Note that the wireless unit 60 and the power supply unit 20 are fixed with two screws 91, but this is not limited to this.

Next, as shown in FIG. 14, the power supply case 22 of the power supply unit 20 to which the wireless unit 60 is fixed is fixed to the support member 30. Specifically, a screw 92 is inserted into the screw hole 22e of the protruding piece 22d formed in the power supply case 22, and the screw 92 is screwed into the screw hole 31a provided in the bottom surface portion 31 of the support member 30. At this time, a cutout portion 62a is formed in the wireless case 62 as a shape to avoid the screw 92. As a result, even if the wireless case 62 is placed adjacent to the power supply unit 20 in the back side area of the support member 30, which is an elongated and narrow area, as in this embodiment, when the power supply unit 20 is fixed to the support member 30 by the screw 92, interference between the screw 92 and the wireless case 62 can be suppressed. Therefore, the screw 92 can be easily inserted into the screw hole 22e of the protruding piece 22d and screwed into the screw hole 31a of the support member 30. In other words, the power supply unit 20 can be easily fixed to the support member 30.

In this embodiment, the cutout portion 62a formed in the wireless case 62 is a recess formed by partially recessing part of the outline of the wireless case 62. With this configuration, the screw 92 can be surrounded by the recess that is the cutout portion 62a, so that the screw 92 can be stored in the cutout portion 62a (recess).

Although not shown, a protruding piece with a screw hole is also formed on the opposite longitudinal side of the power supply case 22, and a screw is inserted into this screw hole and screwed into a screw hole provided in the support member 30. This allows the power supply case 22 containing the power supply device 21 to be fixed to the support member 30.

At this time, since the wireless unit 60 is fixed to the power supply unit 20, by fixing the power supply unit 20 to the support member 30, the wireless unit 60 can also be fixed to the support member 30. In other words, the wireless unit 60 can be fixed to the support member 30 via the power supply unit 20.

As described above, in the lighting fixture 1 of this embodiment, in order to improve the wireless performance of the wireless module 61, the slit 40a is provided near the wireless module 61 as described above. Moreover, in the lighting fixture 1 of this embodiment, the position of the slit 40a for wireless communication with the outside is devised in order to further improve the wireless performance of the wireless module 61.

Specifically, the center of the slit 40a is located closer to the end of the support member 30 than the center of the power supply unit 20 in the longitudinal direction of the support member 30. In this embodiment, the entire slit 40a is located closer to the end of the support member 30 than the power supply unit 20 in the longitudinal direction of the support member 30. In other words, the slit 40a is formed so as to be located outside the power supply unit 20, based on the longitudinal center of the support member 30 (= the longitudinal center of the lighting device 1).

This configuration allows the slit 40a for wireless communication with the outside to be located away from the power supply unit 20, preventing wireless signals from being blocked by the metal members that make up the power supply unit 20 when wireless communication is performed through the slit 40a. Examples of metal members that block wireless signals include the metal wiring of the circuit board 21a in the power supply device 21 of the power supply unit 20, or the metal parts of the circuit element 21b mounted on the circuit board 21a.

In particular, the wireless module 61 is often arranged on the back side of the support member 30 (the side opposite to the light source unit 10), but from the viewpoint of strength and heat dissipation, the support member 30 and the device body 40 arranged on the back side of the support member 30 are often made of metal materials. Moreover, the power supply case 22 of the power supply unit 20 is often made of metal from the viewpoint of strength and heat dissipation. Thus, in the lighting device 1 of the present embodiment, there are many metal members around the wireless module 61, and the structure is such that the wireless signal is easily blocked by these metal members (particularly the metal power supply case 22). In contrast, in the present embodiment, the center of the slit 40a is located closer to the end of the support member 30 than the center of the power supply unit 20 in the longitudinal direction of the support member 30. This makes it possible to effectively prevent the wireless signal from being blocked by the above-mentioned metal members when wireless communication is performed through the slit 40a. Therefore, according to the lighting device 1 of the present embodiment, the wireless performance of the wireless module 61 can be improved, and therefore a lighting device 1 with excellent wireless performance can be obtained. Therefore, the target communication distance when performing wireless communication can be easily satisfied.

In addition, the lighting device 1 according to this embodiment has multiple slits 40a formed for wireless communication with the outside.

This configuration can further improve the wireless performance of the wireless module 61, resulting in a lighting fixture 1 with even better wireless performance.

In this case, in the lighting device 1 according to this embodiment, at least a portion of the two slits 40a faces each other in the short direction of the support member 30.

This configuration can further improve the wireless performance of the wireless module 61. This makes it possible to obtain a lighting fixture 1 with even better wireless performance.

The length of the slit 40a (length in the extension direction) is preferably approximately half the wavelength λ (i.e. λ/2) of the wavelength λ corresponding to the frequency of wireless communication, but the inventors have found that there is a suitable range for the length of the slit 40a. This point will be explained using FIG. 15. FIG. 15 is a diagram showing the relationship between the length of the slit 40a and the gain of the wireless signal. In FIG. 15, the solid line indicates the radiated power, and the dashed line indicates the radiation efficiency.

In this analysis, the frequency of the wireless communication was set to 2.4 GHz. In this case, if the propagation speed of the electromagnetic wave is 299,792,458 m/s, the wavelength λ corresponding to the frequency is 124.91 mm. Furthermore, half the wavelength (λ/2) is 62.46 mm.

Based on this, the relationship between the length of slit 40a and the gain of the wireless signal was simulated, and the results shown in Figure 15 were obtained. Here, if the standard value (condition) of the target communication distance for wireless signals in a lighting fixture is 15 m or more, the gain of the radiated power (dB) needs to be equal to or greater than that standard value. In this case, as shown in Figure 15, the lower limit of the length of slit 40a is 52 mm, and it is preferable that the upper limit of the length of slit 40a is 70 mm. In this case, when half the wavelength (λ/2) is used as the standard, the lower limit of the length of slit 40a is -16% and the upper limit of the length of slit 40a is +12%.

From the above, it can be seen that if the length of the slit 40a is A, the wavelength of the wireless signal when wireless communication is performed is λ, and n is a natural number, it is preferable that the relational expression 0.84×n×λ/2×≦A≦0.12×n×λ/2 is satisfied. Note that A=n×λ/2 may be omitted.

In this way, by setting the length of the slit 40a to satisfy this relational expression, it is possible to realize a lighting fixture 1 with wireless communication functionality that can satisfy the target communication distance.

(Modification)
Although the lighting fixture according to the present invention has been described based on the embodiment, the present invention is not limited to the above embodiment.

For example, in the above embodiment, the slit 40a for wireless communication with the outside is formed in the fixture body 40, but this is not limited to the above. Specifically, the slit for wireless communication with the outside of the lighting fixture may be formed in the support member 30. In this case, too, the center of the slit is located closer to the end of the support member 30 than the center of the power supply unit 20 in the longitudinal direction of the support member 30. In addition, the slit for wireless communication with the outside of the lighting fixture may be formed in both the fixture body 40 and the support member 30. In other words, it is sufficient that the slit for wireless communication with the outside is formed in at least one of the support member 30 and the fixture body 40.

For example, when a slit for wireless communication with the outside is formed in the support member 30, the slit 32a for wireless communication with the outside can be formed in the side portion 32 of the support member 30, as in the lighting fixture 1A shown in FIG. 16. In this case, the slit 32a may face the wireless module 61 in the short direction of the support member 30. That is, the slit 32a may be located next to the wireless module 61. Specifically, the slit 32a may face the antenna 61b formed on the substrate 61a of the wireless module 61. This can improve the wireless performance (reception sensitivity) of the wireless module 61. In FIG. 16, the slit 32a is formed in each of the pair of side portions 32, but this is not limited to this. That is, the number of slits 32a may be one, not two. In FIG. 16, no slit is formed in the fixture body 40A, but a slit 40a may be formed.

In the above embodiment, the wireless unit 60 is fixed to the power supply unit 20 by directly screwing the wireless case 62 to the power supply case 22, but this is not limited to the above. For example, the wireless unit 60 may be indirectly fixed to the power supply unit 20 by a separate member such as a mounting bracket. Specifically, a metal mounting bracket having a belt-shaped portion (line portion) and a mounting portion having a screw hole is used, and the wireless case 62 is held by the mounting bracket so that it is held by the mounting bracket, and the mounting bracket presses the wireless case 62 against the power supply case 22, and a screw 91 is inserted into the screw hole of the mounting portion of the mounting bracket and screwed into the screw hole of the power supply case 22. As a result, the mounting bracket is screwed to the power supply case 22 by the screw 91, and the wireless case 62 held by the mounting bracket is indirectly fixed to the power supply case 22. Note that in this case as well, the wireless case 62 is provided with a cutout portion 62a formed in a shape that avoids the screw 92.

In addition, in the above embodiment, the cross-sectional shape of the support member 30 and the instrument body 40 is U-shaped, but this is not limited to this. For example, the cross-sectional shape of the support member 30 and the instrument body 40 may be L-shaped or I-shaped.

In addition, in the above embodiment, the two slits 40a are formed only on one side of the longitudinal direction of the instrument body 40 (the longitudinal direction of the support member 30), but this is not limited to this. For example, two slits 40a (a total of four slits 40a) may be formed on both sides of the longitudinal direction of the instrument body 40. In this case, a pair of two slits 40a may be formed so as to be line-symmetrical in the longitudinal direction of the instrument body 40 (i.e., the longitudinal direction of the support member 30) with the center of the instrument body 40 as a reference. In other words, the four slits 40a may be present at positions that are line-symmetrical in the longitudinal direction of the support member 30. This eliminates the directionality of the instrument body 40 relative to the support member 30, so that the instrument body 40 can be attached to the instrument body 40 regardless of whether it is arranged in the left or right direction. Therefore, the instrument body 40 can be easily assembled to the support member 30. In this case, the number of slits 40a is not limited to four. Specifically, if the number of slits 40a is 2n (n is an integer equal to or greater than 1), the 2n slits 40a should be positioned in line symmetry in the longitudinal direction of the support member 30.

In addition, in the above embodiment, the cover member 50 has both diffusive and translucent properties, but this is not limited thereto. For example, the cover member 50 may be a translucent cover that has only translucent properties out of the diffusive and translucent properties. In this case, a transparent cover with a high transmittance that allows the other side to be seen through may be used as the translucent cover.

In addition, the present disclosure also includes forms obtained by applying various modifications to the above-mentioned embodiments that a person skilled in the art may conceive, and forms realized by arbitrarily combining the components and functions of the embodiments within the scope of the present invention. In addition, the present invention also includes any combination of two or more claims from among the multiple claims described in the claims at the time of filing of this application, within the scope of technical compatibility. For example, when a cited-form claim described in the claims at the time of filing of this application is made into a multiple claim or multiple-multi claim so as to cite all of the higher claims within the scope of technical compatibility, the present invention also includes all combinations of claims included in the multiple claim or multiple-multi claim.

Reference Signs List 1, 1A Lighting fixture 10 Light source unit 20 Power supply unit 21 Power supply device 22 Power supply case 30 Support member 32a Slit 40, 40A Fixture body 40a Slit 60 Wireless unit 61 Wireless module 61a Board (wireless board)
61b Antenna

Claims (12)

A light source unit;
a power supply unit for supplying power to the light source unit;
a wireless module that performs wireless communication related to at least the control of the light source unit;
A metal elongated support member for supporting the light source unit;
a metal device body that is combined with the support member to form a space for accommodating the wireless module;
At least one of the support member and the instrument body has a slit for performing the wireless communication with an outside,
The center of the slit is located closer to an end of the support member than the center of the power supply unit in the longitudinal direction of the support member.
lighting equipment. the slit is entirely located closer to an end of the support member than the power supply unit is in the longitudinal direction of the support member;
2. A lighting fixture according to claim 1. In a cross-sectional view of the lighting device taken along a short-side direction of the support member, the slit is positioned in an oblique direction of the wireless module.
2. A lighting fixture according to claim 1. In a short-side direction of the support member, the slit faces the wireless module.
2. A lighting fixture according to claim 1. The slits are multiple.
A lighting fixture according to any one of claims 1 to 4. Two of the plurality of slits are at least partially opposed to each other in the short-side direction of the support member.
A lighting fixture according to any one of claims 1 to 4. 2k slits (k is an integer of 1 or more) among the plurality of slits are present at positions that are line-symmetrical in the longitudinal direction of the support member.
A lighting fixture according to any one of claims 1 to 4. The wireless module has a wireless substrate on which an antenna is formed in a predetermined pattern.
A lighting fixture according to any one of claims 1 to 4. The wireless module is adjacent to the power supply unit.
A lighting fixture according to any one of claims 1 to 4. a wireless case that houses the wireless module;
The wireless case is fixed to the power supply unit.
10. A lighting device according to claim 9. The light source unit is disposed on one surface side of the support member,
the power supply unit and the wireless module are disposed on the other surface side of the support member.
A lighting fixture according to any one of claims 1 to 4. the power supply unit includes a power supply device that generates power for causing the light source unit to emit light, and a power supply case that houses the power supply device;
The power supply case is made of metal.
A lighting fixture according to any one of claims 1 to 4.

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