Light source unit and luminaire including the same

Abstract

To provide a light source unit which enables further improvement of communication performance, and to provide a luminaire.SOLUTION: A light source unit 10 includes: a light source part 1; a wireless communication part 2 which performs wireless communication; and a holder 3 which holds the light source part 1 and the wireless communication part 2. The holder 3 has: a support member 4 made of a metallic material and supporting the light source part 1; and a cover member 5 which is attached to the support member 4 and forms a space 10aa therein so as to cover the support member 4. The wireless communication part 2 includes an antenna part 2a and a communication circuit part 2b. The cover member 5 is configured to transmit radio waves with a resin material. The antenna part 2a is disposed in the space 10aa formed by the cover member 5.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a light source unit and a lighting fixture, and more particularly to a light source unit capable of wireless communication and a lighting fixture including the same. [Background technology]

[0002] 2. Description of the Related Art In recent years, in order to save energy and improve convenience, lighting fixtures are sometimes remotely controlled via wireless communication.

[0003] As this type of lighting fixture, a structure is known in which the antenna of the wireless unit is provided in the lighting fixture and provided in correspondence with a through hole that communicates with the outside of the lighting fixture (for example, Patent Document 1).

[0004] Also, although not a lighting fixture, electronic devices are known in which the radiating element of an antenna connected to a wireless communication circuit by a power supply line is arranged on a circuit board so that it is positioned within the frame area when viewed from the front side (for example, Patent Document 2). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2013-33652 A [Patent Document 2] JP 2012-235224 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, there is a demand for light source units and lighting fixtures equipped with the same that have structures with higher communication performance, and the configurations that apply the above-mentioned Patent Document 1 and Patent Document 2 are not sufficient, so further improvements are required.

[0007] An object of the present invention is to provide a light source unit and a lighting fixture that can achieve higher communication performance. [Means for solving the problem]

[0008] The light source unit of the present invention includes a light source section having a long mounting board on which a plurality of light-emitting elements are mounted, a wireless communication section for performing wireless communication using radio waves as a medium, a plate-shaped mounting section to which the mounting board is attached, and a long support member having an opening penetrating the mounting section in a thickness direction, and includes a holder for holding the wireless communication section, and a lighting unit having a power supply section for supplying power to the light source section and the wireless communication section, which is arranged on the opposite side of the support member to the light source section and held by the support member along the longitudinal direction of the support member. The wireless communication section includes an antenna section capable of at least one of transmitting and receiving radio waves, a communication circuit section electrically connected to the antenna section, and a circuit board on which the antenna section is provided, and the circuit board is arranged to intersect with the surface of the mounting section. One surface of the circuit board on which the antenna section is formed is aligned along a direction perpendicular to the longitudinal direction of the support member.

[0009] The lighting fixture of the present invention includes the light source unit described above and the fixture body that holds the light source unit. Effect of the Invention

[0010] The light source unit of the present invention can achieve higher communication performance.

[0011] The lighting fixture of the present invention can achieve higher communication performance. [Brief description of the drawings]

[0012] [Figure 1] FIG. 2 is a cross-sectional view illustrating a light source unit according to the first embodiment. [Diagram 2] 1 is a partially cutaway perspective cross-sectional view illustrating a main part of a light source unit according to a first embodiment. [Diagram 3] 2 is a partially cutaway front view illustrating a main part of the light source unit of the first embodiment. FIG. [Figure 4]1 is an exploded perspective view showing a lighting fixture using the light source unit of the first embodiment. [Diagram 5] 1 is a perspective view showing a lighting fixture using the light source unit of the first embodiment. [Figure 6] FIG. 11 is a perspective view illustrating a main part of a light source unit according to a second embodiment. [Figure 7] 11 is a partially cutaway front view illustrating a main part of a light source unit according to a second embodiment. FIG. [Figure 8] FIG. 11 is a side view of the light source unit of the second embodiment. [Figure 9] FIG. 11 is an exploded perspective view of a main part of a light source unit according to a second embodiment. [Figure 10] FIG. 11 is an explanatory plan view illustrating a light source unit according to a second embodiment. [Figure 11] FIG. 11 is an explanatory plan view for explaining a light source unit to be compared with the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] (Embodiment 1) In the following, the light source unit 10 of this embodiment will be described with reference to Figs. 1, 2, and 3. A lighting fixture 30 including the light source unit 10 will be described with reference to Figs. 4 and 5. In the drawings, the same components are given the same reference numerals and duplicated descriptions will be omitted. The size and positional relationship of the components shown in each drawing may be exaggerated for clarity. In the following description, each element constituting this embodiment may be configured such that a single component is used for multiple elements, or the function of a single component may be shared by multiple components.

[0014] As shown in FIG. 1, FIG. 2, and FIG. 3, the light source unit 10 of the present embodiment includes a light source section 1, a wireless communication section 2, and a holder 3. The wireless communication section 2 is configured to be able to perform wireless communication using radio waves as a medium. The holder 3 holds the light source section 1 and the wireless communication section 2. The holder 3 includes a support member 4 and a cover member 5. The support member 4 is made of a metal material. The support member 4 is configured to support the light source section 1. The cover member 5 is attached to the support member 4. The cover member 5 forms a space 10aa inside so as to cover the support member 4. The wireless communication section 2 includes an antenna section 2a and a communication circuit section 2b. The antenna section 2a is configured to be able to at least one of transmit and receive radio waves. The communication circuit section 2b is electrically connected to the antenna section 2a. The cover member 5 is made of a resin material. The cover member 5 is configured to transmit radio waves. The antenna section 2a is disposed in the space 10aa formed by the cover member 5.

[0015] In the light source unit 10 of the present embodiment, the antenna portion 2a is disposed in the space 10aa formed by the cover member 5 that transmits radio waves, and therefore it is possible to further improve communication performance.

[0016] The light source unit 10 of this embodiment will be described in detail below.

[0017] The light source unit 1 includes a light emitting element 1a and a mounting board 1b that electrically connects the light emitting element 1a. The light emitting element 1a uses an LED (Light Emitting Diode). The light emitting element 1a is electrically connected to a wiring portion provided on the mounting board 1b by solder.

[0018] The mounting board 1b has a long and flat outer shape. As shown in FIG. 2 and FIG. 3, the mounting board 1b has a plurality of light-emitting elements 1a mounted along the longitudinal direction. The mounting board 1b electrically connects the plurality of light-emitting elements 1a in series using a wiring portion. The plurality of light-emitting elements 1a are arranged linearly along the longitudinal direction of the mounting board 1b at the center in the short-side direction of the mounting board 1b. The mounting board 1b may be, for example, a printed wiring board. The mounting board 1b has a resist film formed thereon except for the mounting surface of the light-emitting elements 1a. The mounting board 1b is not limited to a printed wiring board, and may be, for example, a ceramic board, a metal-based printed wiring board, or the like. The mounting board 1b is attached to and supported by the mounting portion 4a of the support member 4. The light source unit 1 is not limited to a configuration using an LED, and may be an organic electroluminescence element, a discharge lamp, or the like.

[0019] The support member 4 has an elongated outer shape. The support member 4 can be formed, for example, using a steel plate. The support member 4 has a plate-shaped mounting portion 4a and a pair of side wall portions 4b. In a cross-sectional view, the support member 4 is formed into a C-shape by the mounting portion 4a and the pair of side wall portions 4b. In a front view, the mounting portion 4a is formed into an elongated rectangular shape. The side wall portions 4b are provided so as to extend from both ends in the short direction of the mounting portion 4a in a direction perpendicular to the mounting portion 4a. A protruding portion 4e that protrudes outward is provided at the tip of the side wall portion 4b. The support member 4 is provided with the protruding portion 4e over the entire length in the longitudinal direction.

[0020] The protrusion 4e is formed into a cylindrical shape by rolling the tip of the side wall portion 4b. A recess 4ad is provided in the center of the mounting portion 4a along the longitudinal direction. The recess 4ad includes a bottom portion 4cb and a pair of side portions 4cc. The bottom portion 4cb is formed into a long rectangular shape in a front view. The side portions 4cc are provided to rise from the bottom portion 4cb along the longitudinal direction of the bottom portion 4cb. The support member 4 is configured so that the mounting board 1b can be placed at a predetermined position on the bottom portion 4cb. The support member 4 has a locking piece 4s that protrudes from the bottom portion 4cb. The locking piece 4s is configured so that it can be inserted into a hole portion 1bc that penetrates the mounting board 1b in the thickness direction. The support member 4 can fix the mounting board 1b by crimping between the locking piece 4s and the bottom portion 4cb by bending the locking piece 4s.

[0021] The pair of side portions 4cc are provided such that the distance between them increases as they move away from the bottom portion 4cb. The surface of the side portion 4cc forms a reflective surface that reflects light from the light-emitting element 1a. An opening 4aa that opens in the thickness direction is provided at one end in the longitudinal direction of the mounting portion 4a. The opening 4aa may be configured by cutting out the end of the mounting portion 4a, or may be configured as a through hole that penetrates the mounting portion 4a in the thickness direction. The opening 4aa can be formed, for example, by punching the metal plate that constitutes the support member 4.

[0022] In the light source unit 10, the mounting substrate 1b is supported by a support member 4 made of a metal material, and the support member 4 can be used as a heat sink. When the support member 4 is made of a steel plate having a higher thermal conductivity than resin, the heat generated by the light emitting element 1a can be efficiently dissipated to the outside. The material of the support member 4 is not limited to a steel plate, and the support member 4 may be made of a metal material such as aluminum, copper, or stainless steel. The support member 4 is formed by punching and bending a metal sheet. The support member 4 is configured so that a cover member 5 can be attached to the support member 4.

[0023] The cover member 5 is configured to be long. The cover member 5 is attached to the support member 4 so as to cover the light source unit 1. The cover member 5 is configured to cover the mounting board 1b on which the light emitting element 1a is mounted, thereby forming a space 10aa between the cover member 5 and the support member 4. The cover member 5 includes a cover main body 5a and a cover end 5b.

[0024] The cover body 5a includes a semi-cylindrical light emitting portion 5c and a pair of protruding walls 5d. The protruding walls 5d are provided along the longitudinal direction of the light emitting portion 5c. The pair of protruding walls 5d are formed so as to protrude parallel to each other from both ends of the light emitting portion 5c. The tips of the pair of protruding walls 5d are provided with projections 5e that protrude in directions approaching each other.

[0025] The protrusion 5e is configured so as to be hooked onto the protrusion 4e of the support member 4. The protruding wall 5d has an inner protrusion 5f between the protrusion 5e and the light emitting portion 5c. The pair of inner protrusions 5f protrude inward toward the opposing protruding wall 5d. An extension 5h is provided at both ends in the longitudinal direction of the light emitting portion 5c. The extension 5h extends to the outside of the protruding wall 5d so as to be connected to the light emitting portion 5c. The cover main body 5a is integrally formed with the light emitting portion 5c, the protruding wall 5d, the protrusion 5e, the extension 5h, and the inner protrusion 5f.

[0026] The cover end 5b is provided at the end of the support member 4 and the cover body 5a in the longitudinal direction. The cover end 5b is formed in a semicircular outer shape. The cover end 5b has a clamping portion 5g that clamps the inner protrusion 5f of the cover body 5a. The cover end 5b is attached to the cover body 5a at the end of the cover body 5a by the clamping portion 5g clamping the inner protrusion 5f. The cover member 5 constitutes a polyhedron with multiple faces by the cover body 5a and the cover end 5b. The cover end 5b has the smallest face among the faces of the cover member 5 that emit light from the light source unit 1.

[0027] In the light source unit 10 of this embodiment, the cover member 5 has a translucency that transmits light from the light source section 1. The cover member 5 emits light from the light source section 1 to the outside from the outer bottom surface 5aa of the cover member 5. In the light source unit 10, the cover member 5 has a translucency that transmits light from the light source section 1, so that the light source unit 1 can suppress a decrease in the light utilization efficiency of the light source section 1. The cover member 5 is preferably configured to efficiently transmit light emitted from the light emitting element 1a. The cover member 5 is preferably made of a material that is highly transmissive to radio waves. The cover member 5 can be formed, for example, using a resin material such as polycarbonate resin or acrylic resin. The cover member 5 can be formed, for example, by injection molding. The cover member 5 may be made of a translucent resin material containing a light diffusing material.

[0028] The cover body 5a and the cover ends 5b of the cover member 5 may be formed of the same material or different materials. The cover body 5a and the cover ends 5b of the cover member 5 may be formed to have the same thickness or the thickness of the cover ends 5b may be different from that of the cover body 5a.

[0029] The wireless communication unit 2 is attached to a support member 4. The wireless communication unit 2 is configured to be able to perform wireless communication using an antenna unit 2a and a communication circuit unit 2b. In addition to the antenna unit 2a and the communication circuit unit 2b, the wireless communication unit 2 includes a circuit board 6 and a housing case 7 that houses the circuit board 6.

[0030] The circuit board 6 has a flat plate-like outer shape. For example, a printed wiring board can be used as the circuit board 6. The circuit board 6 has a first region 6ca in which the antenna unit 2a is provided, and a second region 6cb in which the communication circuit unit 2b is provided. The circuit board 6 is configured to be able to input a communication signal received by the antenna unit 2a to the communication circuit unit 2b. The circuit board 6 is configured to be able to wirelessly radiate a communication signal output by the communication circuit unit 2b from the antenna unit 2a to the outside.

[0031] The antenna section 2a can be formed, for example, by using the wiring 6a of a predetermined shape on the circuit board 6. For example, the wiring 6a of the predetermined shape can be a detour wiring formed by bending the wiring 6a as shown in FIG. 1. The antenna section 2a may be provided on only one surface in the thickness direction of the circuit board 6, or on both surfaces. The antenna section 2a is not limited to a configuration formed by using the wiring 6a of the circuit board 6, and may be formed separately from the circuit board 6. When the antenna section 2a is formed by using the wiring 6a of the circuit board 6, the component cost of the antenna section 2a can be suppressed and the antenna section 2a can be formed inexpensively, compared to a structure in which the antenna section 2a is formed separately from the circuit board 6. When the antenna section 2a is formed separately from the circuit board 6, it is sufficient to fix the antenna section 2a to the first region 6ca of the circuit board 6 as appropriate. The communication circuit section 2b is configured to be equipped with electronic components 6d, such as a crystal oscillator and a microcomputer, so as to be able to perform at least one of transmitting and receiving radio waves.

[0032] The storage case 7 has a rectangular parallelepiped outer shape. The storage case 7 can be configured to include, for example, a cover 7a and a case body 7b. The storage case 7 can be configured to have a hollow box shape by storing the circuit board 6 in the case body 7b and covering it with the cover 7a. The storage case 7 has the circuit board 6 arranged so that the antenna unit 2a can be stored in the cover 7a and the communication circuit unit 2b can be stored in the case body 7b. The cover 7a constitutes an antenna storage section 7c that stores the antenna unit 2a. The storage case 7 includes a plate-shaped fixing section 7d protruding in the longitudinal direction on the case body 7b so that the storage case 7 can be fixed to the support member 4. The fixing section 7d includes a screw hole penetrating in the thickness direction. The storage case 7 is configured so that a screw 7e that passes through a through hole in the support member 4 can be screwed to the fixing section 7d. The housing case 7 is configured so that the antenna housing portion 7c can be inserted into an opening 4aa that penetrates the mounting portion 4a in the thickness direction.

[0033] The housing case 7 is made of a material that transmits radio waves. For example, synthetic resins such as polycarbonate resin, epoxy resin, polyester resin, and polyimide resin can be used as the material of the housing case 7. The synthetic resin constituting the housing case 7 may contain a light diffusing material.

[0034] The wireless communication unit 2 is fixed to the fixing portion 7d by the screw 7e via the support member 4 with the antenna housing portion 7c protruding from the opening 4aa toward the cover member 5. The wireless communication unit 2 is arranged so that the circuit board 6 intersects with the surface of the bottom portion 4cb by protruding the antenna housing portion 7c toward the cover member 5. The wireless communication unit 2 is arranged in the space 10aa so as to protrude from the recess 4ad of the support member 4 toward the cover member 5, thereby improving the communication performance of the antenna portion 2a. The light source unit 10 can improve the directivity of radio waves in the longitudinal direction of the support member 4 by, for example, aligning one surface of the circuit board 6 on which the antenna portion 2a is formed along a direction perpendicular to the longitudinal direction of the support member 4.

[0035] That is, in the light source unit 10 of this embodiment, the wireless communication section 2 includes a circuit board 6 and a housing case 7. The housing case 7 is configured to be able to house the circuit board 6. The circuit board 6 has a first region 6ca in which the antenna section 2a is provided, and a second region 6cb in which the communication circuit section 2b is provided. The housing case 7 is configured to transmit radio waves by using a resin material.

[0036] In the light source unit 10, the housing case 7 that houses the circuit board 6 makes it possible to easily handle the wireless communication section 2.

[0037] In the light source unit 10 of this embodiment, the support member 4 includes a plate-shaped mounting portion 4a to which the light source section 1 is attached. The support member 4 has an opening 4aa penetrating the mounting portion 4a in the thickness direction. The housing case 7 includes an antenna housing portion 7c that houses the antenna section 2a. The antenna housing portion 7c is inserted into the opening 4aa and disposed in the space 10aa so as to protrude toward the cover member 5.

[0038] The light source unit 10 is disposed in the space 10aa so that the antenna accommodating portion 7c is inserted into the opening 4aa and protrudes toward the cover member 5, thereby making it possible to reduce the portion of the wireless communication portion 2 provided in the space 10aa.

[0039] The wireless communication unit 2 is configured to be able to transmit and receive communication signals by radio waves to a communication device disposed outside the lighting fixture 30 including the light source unit 10. The wireless communication unit 2 can receive a wireless signal indicating the presence of a person from a communication device connected to a human detection sensor. The light source unit 10 can be configured to turn on the light source unit 1 when it receives a wireless signal indicating the presence of a person from the human detection sensor. The light source unit 10 can be configured to dim or turn off the light source unit 1 when it receives a wireless signal indicating the absence of a person from the human detection sensor. The wireless communication unit 2 can transmit a wireless signal indicating the presence or absence of a malfunction of the light source unit 10 to the communication device. The wireless communication unit 2 can transmit a wireless signal indicating the power consumption of the light source unit 10 to the communication device.

[0040] That is, the wireless communication unit 2 has a function of transmitting and receiving wireless signals. The wireless communication unit 2 may be configured to have only a function of transmitting wireless signals. The wireless communication unit 2 may be configured to have only a function of receiving wireless signals.

[0041] The frequency of the radio signal transmitted by the wireless communication unit 2 may be, for example, the UHF band. The wireless communication unit 2 uses, for example, a low-power data communication system in the 2.4 GHz band for wireless communication. The wireless communication unit 2 is not limited to a configuration using a low-power data communication system in the 2.4 GHz band, and may use, for example, a specific low-power wireless communication system in the 920 MHz band.

[0042] The light source unit 10 includes a light source section 1, a wireless communication section 2, a holder 3, and a lighting unit 8 shown in FIG.

[0043] The lighting unit 8 is electrically connected to the light source section 1 and the wireless communication section 2. The lighting unit 8 can be configured to include a control section that controls the lighting of the light source section 1, and a power supply section that supplies power to the light source section 1 and the wireless communication section 2. The power supply section is configured to convert power from an external power source such as a commercial AC power source into a predetermined power and supply power separately to the light source section 1 and the wireless communication section 2. The lighting unit 8 is configured to be able to control the lighting of the light source section 1 based on a signal from the wireless communication section 2. The lighting unit 8 includes a lighting board 8a that constitutes the control section and the power supply section, and a housing section 8c that accommodates the lighting board 8a.

[0044] The lighting board 8a is configured, for example, so that the power supply section converts AC voltage into DC voltage. The lighting unit 8 is held on the opposite side of the support member 4 to the light source section 1. The light source unit 10 is configured so that external power is supplied to the lighting unit 8. A plurality of types of electrical components 8b are mounted on the lighting board 8a.

[0045] The electrical components 8b are used to configure various circuits that configure the lighting unit 8. Examples of the various circuits include a filter circuit, a step-up circuit, a step-down circuit, a main control circuit, a control power circuit, a dimming control circuit, and a lights-off control circuit. Examples of the electrical components 8b include a transformer, a diode, a capacitor, a switching element, and a microcomputer. For example, a commercial AC power supply can be used as the external power supply. The lighting unit 8 is supplied with AC power.

[0046] The housing portion 8c has an outer shape like a rectangular box with an opening formed on one side. The lighting unit 8 is configured so that the housing portion 8c, which houses the lighting board 8a, is attached to the support member 4. The housing portion 8c is arranged so that the opening is closed by the mounting portion 4a of the support member 4. The housing portion 8c can be formed by bending a metal plate. The housing portion 8c is attached to the support member 4 using, for example, mounting screws 8d.

[0047] The wireless communication unit 2 is electrically connected to the lighting unit 8 via a wiring cord 2f electrically connected to the circuit board 6. A shielded wire can be used for the wiring cord 2f. The shielded wire has a structure in which a coated conductor is wrapped with a thin conductor wire or metal foil. The shielded wire is configured so that the external conductor wire or metal foil is at ground potential and a communication signal can be sent to the internal conductor wire.

[0048] Incidentally, in the light source units for comparison with the present application, if the antenna section 2a of the wireless communication section 2 protrudes to the outside, the degree of freedom in design is restricted, and the appearance may be unattractive. In the light source unit, the light source section 1 is attached to a support member 4 made of a metal material in order to efficiently dissipate heat generated in the light source section 1 to the outside. If the wireless communication section 2 is simply placed on the support member 4 in order to improve the appearance of the light source unit, the communication performance of the antenna section 2a, such as the directivity and gain, tends to decrease.

[0049] When the circuit board 6 of the light source unit 10 is arranged so as to intersect with the surface of the mounting portion 4a, it is possible to suppress absorption of radio waves by the support member 4 made of a metal material and to increase the radiation intensity ratio of radio waves from the wireless communication unit 2, compared to when the circuit board 6 is arranged in parallel. When the circuit board 6 of the light source unit 10 is arranged so as to intersect with the surface of the mounting portion 4a, it is also possible to reduce the variation in the radio wave radiation intensity ratio of the wireless communication unit 2, compared to when the circuit board 6 is arranged in parallel.

[0050] In the light source unit 10 of the present embodiment, the wireless communication unit 2 is disposed at a position away from the lighting unit 8 in the longitudinal direction of the support member 4. The wireless communication unit 2 includes a crystal oscillator and the like, and if it is heated by heat from the light source unit 1 or the lighting unit 8, there is a risk that the radio waves it outputs will become weak. By disposing the wireless communication unit 2 at a position away from the lighting unit 8, it is possible to suppress a decrease in communication performance.

[0051] When the wireless communication unit 2 is provided at the end of the support member 4, a shadow of the wireless communication unit 2 may be cast on the cover end 5b. In the light source unit 10, the area of ​​the cover end 5b is small among the entire cover member 5, and therefore the contribution to illumination is small, so that the effect of the antenna unit 2a blocking the light from the light source unit 1 can be reduced. In the light source unit 10, by reducing the effect of the antenna unit 2a blocking the light from the light source unit 1, it is possible to make the presence of the wireless communication unit 2 less noticeable.

[0052] In other words, in the light source unit 10 of the present embodiment, the cover member 5 is formed by combining a plurality of surfaces and is configured to cover the light source section 1. The wireless communication section 2 is preferably disposed in the vicinity of the smallest surface among the plurality of surfaces.

[0053] In the light source unit 10, the wireless communication unit 2 is disposed near the smallest surface among the multiple surfaces, so that the wireless communication unit 2 is less noticeable even if a shadow of the wireless communication unit 2 is projected onto the cover member 5. The smallest surface among the multiple surfaces is a surface in the light source unit 10 where less light is radiated from the light source unit 1, and even if the wireless communication unit 2 is disposed nearby, it is possible to reduce the effect of light blocking by the wireless communication unit 2 compared to a case where the wireless communication unit 2 is disposed near a larger surface. In other words, the wireless communication unit 2 is disposed at an end of the light source unit 10 where its contribution as the main illumination is low.

[0054] In the light source unit 10, a gap is provided between the cover end 5b of the cover member 5 and the housing case 7. In the light source unit 10, a gap is provided between the cover end 5b of the cover member 5 and the housing case 7, so that it is possible to prevent the end of the light source unit 10 from becoming extremely dark due to light scattered by the support member 4 and the cover member 5 going around.

[0055] The housing case 7 contains a light diffusing material in the synthetic resin, which can prevent the circuit board 6 from being reflected on the cover member 5 and being visible from the outside. The housing case 7 can improve the appearance of the light source unit 10 by preventing the circuit board 6 from being reflected and being visible from the outside. The housing case 7 contains a light diffusing material in the synthetic resin, which can reflect light that has entered between the housing case 7 and the cover member 5 to the outside, and can also prevent a decrease in brightness at the end of the light source unit 10 where the wireless communication unit 2 is provided, compared to a configuration that does not contain a light diffusing material. The housing case 7 is preferably colored white by containing a light diffusing material in the synthetic resin that constitutes the housing case 7.

[0056] The assembly process of the light source unit 10 will be described below.

[0057] In the assembly process of the light source unit 10, the light source section 1 is prepared in advance by mounting the light emitting element 1a on the mounting board 1b. In the assembly process, the wireless communication section 2 and the lighting unit 8 are attached to the side of the support member 4 opposite to the attachment section 4a on which the mounting board 1b is mounted.

[0058] In the assembly process, with the antenna housing portion 7c positioned so as to protrude from the opening 4aa of the support member 4 towards the cover member 5, the screw 7e is screwed into the fixing portion 7d of the housing case 7 via the support member 4, thereby fixing the wireless communication unit 2 to the support member 4. The wireless communication unit 2 electrically connects the wiring cord 2f, which is electrically connected to the circuit board 6 and led out from the housing case 7, to the lighting unit 8.

[0059] Next, in the assembly process, the cover member 5 is attached to the support member 4 so as to cover the mounting board 1b. In the assembly process, the protrusions 5e of the cover member 5 are fitted into the protrusions 4e of the support member 4. The cover member 5 is attached to the support member 4 by hooking the pair of protrusions 5e onto the corresponding protrusions 4e, respectively. In the assembly process, the cover member 5 and the support member 4 can be fixed together by appropriately screwing the protruding wall portion 5d of the cover member 5 and the side wall portion 4b of the support member 4. In the assembly process, the cover ends 5b are attached to both ends of the cover member 5 and the support member 4 in the longitudinal direction, so that the light source unit 10 can be assembled.

[0060] A lighting fixture 30 including the light source unit 10 will be briefly described below with reference to FIGS.

[0061] The lighting fixture 30 includes the above-mentioned light source unit 10 and a fixture body 31 that holds the light source unit 10.

[0062] In the lighting fixture 30, the antenna portion 2a of the light source unit 10 is disposed in the space 10aa formed by the cover member 5, and therefore it is possible to further improve the communication performance.

[0063] The lighting fixture 30 is configured to be directly attached to a ceiling material, for example. The fixture body 31 can be configured to be attached to the ceiling material using a hanging bolt. The fixture body 31 has an elongated outer shape. The fixture body 31 is formed in a flat box shape. The fixture body 31 has a recess 31aa in the center. The recess 31aa has an outer shape in which one surface of the fixture body 31 is recessed in a rectangular shape. The recess 31aa is provided over the entire length of the fixture body 31. The recess 31aa is configured to accommodate a part of the light source unit 10 so that the light source unit 10 can be attached. The extension 5h is provided so as to overlap the opening edge of the recess 31aa of the fixture body 31 when the light source unit 10 is attached to the fixture body 31. The fixture body 31 is formed of a metal plate.

[0064] An insertion hole 31ca is provided in the bottom surface portion 31a of the device body 31. A power supply line for power supply electrically connected to an external power supply is inserted through the insertion hole 31ca. The bottom surface portion 31a is provided with a plurality of insertion holes 31ca along the longitudinal direction of the device body 31.

[0065] The bottom surface portion 31a is provided with bolt insertion holes 31cb through which the hanging bolts pass. Four bolt insertion holes 31cb are provided along the longitudinal direction of the fixture body 31. The bolt insertion holes 31cb are configured so that the hanging bolts can be inserted. A nut is fastened to the hanging bolt inserted into the bolt insertion holes 31cb.

[0066] The device body 31 has inclined portions 31b extending from the opening edge of the recess 31aa on both sides of the recess 31aa in the short side direction. The inclined portions 31b are inclined so that the thickness of the device body 31 becomes thinner as it moves away from the recess 31aa. The device body 31 can be formed by bending a metal plate. The device body 31 includes end caps 31e. The end caps 31e are provided at both ends of the device body 31 in the longitudinal direction. The end caps 31e are trapezoidal in a front view.

[0067] Steel plate can be used as the material of the fixture body 31. The material of the fixture body 31 is not limited to steel plate, and may be, for example, aluminum, stainless steel, copper alloy, or the like. By making the fixture body 31 out of metal, the lighting fixture 30 can dissipate heat generated by the light emitting element 1a of the light source unit 10 to the outside more efficiently through the fixture body 31 than when it is made of resin. In the lighting fixture 30, the antenna section 2a is disposed in the space 10aa formed by the cover member 5 of the light source unit 10 protruding from the fixture body 31, so that the communication performance can be further improved.

[0068] The lighting fixture 30 is not limited to a direct ceiling mounting structure. The lighting fixture 30 can be used in lighting fixtures of other structures as appropriate, as long as the light source unit 10 can be attached to the support member 4. In the lighting fixture 30, the fixture body 31 is configured so that the light source unit 10 can be freely attached and detached.

[0069] (Embodiment 2) The light source unit 10 of this embodiment shown in Fig. 6 has a similar configuration to that of the first embodiment shown in Fig. 1, and differs mainly in the structure of the wireless communication unit 2. Note that in the light source unit 10 of this embodiment, components similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof will be omitted as appropriate.

[0070] In the light source unit 10 of this embodiment, the light source section 1, the holder 3, and the cover member 5 are each formed in an elongated shape, as shown in Fig. 7. As shown in Fig. 8, the antenna housing section 7c has a tip portion 7f protruding toward the cover member 5, which is formed in an outer shape that follows the shape of the inner bottom surface 5ab of the opposing cover member 5 when viewed from the direction along the longitudinal direction of the cover member 5.

[0071] In the light source unit 10 of this embodiment, the tip 7f of the antenna accommodating section 7c has an outer shape that follows the inner bottom surface 5ab of the cover member 5, so that even if the shadow of the antenna accommodating section 7c is projected onto the cover member 5 by the light from the light source section 1, the shape of the antenna accommodating section 7c is made less noticeable.

[0072] The light source unit 10 of this embodiment can suppress the outer shape of the tip 7f from being made visible as a shadow in the cover member 5, as compared with the configuration that does not follow the shape of the inner bottom surface 5ab of the cover member 5, such as the antenna housing portion 7c of the first embodiment, and can improve the appearance. In addition, in the light source unit 10 of this embodiment, the tip 7f of the antenna housing portion 7c is formed in an arc shape along the inner bottom surface 5ab of the cover member 5, so there is no angular protrusion toward the cover member 5. Since the light source unit 10 of this embodiment does not have an angular protrusion toward the cover member 5, the cover member 5 and the tip 7f of the wireless communication unit 2 are unlikely to come into contact when the cover member 5 is attached to the support member 4, and the assembly workability can also be improved. In the light source unit 10, the distance between the tip 7f and the inner bottom surface 5ab of the cover member 5 can be set to, for example, about 3 mm.

[0073] The specific structure of the wireless communication unit 2 in this embodiment will be described below with reference to FIG.

[0074] In the wireless communication unit 2, the housing case 7 includes a lid 7a and a case body 7b, as in the first embodiment. The lid 7a includes an antenna housing section 7c, a flat plate section 7g, and legs 7h. The flat plate section 7g has a rectangular flat plate-like outer shape. The antenna housing section 7c is provided to stand from one surface of the flat plate section 7g. The antenna housing section 7c is provided so that its longitudinal direction is parallel to the longitudinal direction of the flat plate section 7g in a front view. The legs 7h protrude from the flat plate section 7g on the opposite side to the antenna housing section 7c. The legs 7h include a claw section 7j at the tip protruding from the flat plate section 7g. The pair of legs 7h are arranged to face each other in the longitudinal direction of the rectangular flat plate section 7g. The legs 7h are provided in total of four, two on each side, along the short sides of the rectangular flat plate section 7g. The leg portion 7h has elasticity so as to bend in the opposite direction to the protruding direction of the claw portion 7j with respect to the flat plate portion 7g.

[0075] The cover 7a is provided with a through hole 7fa penetrating the flat plate portion 7g in the thickness direction. The flat plate portion 7g is provided with the through hole 7fa at one end in the longitudinal direction of the antenna housing portion 7c in a front view. The cover 7a is provided with a restricting portion 7s protruding from the flat plate portion 7g to the antenna housing portion 7c at the other end opposite the through hole 7fa in the longitudinal direction of the antenna housing portion 7c.

[0076] The case body 7b includes a rectangular bottom wall portion 7b1, a pair of first side walls 7b2, and a pair of second side walls 7b3. The pair of first side walls 7b2 are provided facing each other so as to rise from the bottom wall portion 7b1 along the longitudinal direction of the bottom wall portion 7b1. The pair of second side walls 7b3 are provided facing each other so as to rise from the bottom wall portion 7b1 along the lateral direction of the bottom wall portion 7b1. The case body 7b is formed into a box shape with one side open by the rectangular bottom wall portion 7b1, the pair of first side walls 7b2, and the pair of second side walls 7b3. The case body 7b includes a protruding portion 7b4 protruding outward from the second side walls 7b3 along the longitudinal direction of the bottom wall portion 7b1. The protruding portion 7b4 includes a screw fixing portion 7r to which the screw 7e shown in FIG. 6 is fixed.

[0077] A pair of ribs 7k that sandwich one side end of the circuit board 6 are provided on one of the pair of second side walls 7b3 so as to protrude from the bottom wall 7b1. A groove 7m that accommodates the other side end of the circuit board 6 is provided on the other of the pair of second side walls 7b3. The case body 7b is configured to be able to hold the second region 6cb side of the circuit board 6 on which the communication circuit unit 2b is provided, using the ribs 7k and the groove 7m. The circuit board 6 is electrically connected to the wiring cord 2f. The wiring cord 2f is provided with a connector 2h at its tip. The wiring cord 2f is tied with a cable tie 2g. The cable tie 2g is configured to be able to tie the wiring cord 2f by, for example, having a locking part at one end of a long band and passing the opposite end through a cylindrical locking part.

[0078] One of the pair of first side walls 7b2 has a notch 7n that is cut out from the opening side of the case body 7b. The wireless communication unit 2 is configured to allow the wiring cord 2f to be led out from inside the storage case 7 to the outside through the notch 7n. The storage case 7 has a recess 7t in the case body 7b. The recess 7t is configured to allow a cable tie 2g to be accommodated therein. By accommodating the cable tie 2g that ties the wiring cord 2f in the recess 7t, the storage case 7 can function as a tension stopper when the wiring cord 2f is pulled relative to the storage case 7.

[0079] The storage case 7 has an engagement groove 7u that engages with the claw portion 7j. The storage case 7 is covered with a lid 7a so as to close the opening of the case body 7b, and the claw portion 7j of the leg portion 7h engages with the engagement groove 7u, thereby fixing the lid 7a and the case body 7b. The wireless communication unit 2 is configured to output a dimming signal generated by the communication circuit unit 2b based on a signal received by the antenna unit 2a via the wiring cord 2f.

[0080] The wireless communication unit 2 is configured to perform wireless communication using radio waves as a medium, and also to perform infrared communication using infrared rays as a medium. The wireless communication unit 2 has a light receiving element 6e mounted on the second area 6cb of the circuit board 6 for receiving infrared light. The light receiving element 6e can be configured with a photodiode or a phototransistor. The light receiving element 6e is configured to receive infrared signals via the through hole 7fa of the cover 7a.

[0081] The wireless communication unit 2 is configured to receive a signal for controlling each group when the light source units 10 are grouped in advance. The grouped light source units 10 can be dimmed based on the signal received by the wireless communication unit 2. Each of the light source units 10 is configured to adjust the light output emitted from the light source section 1 of each light source unit 10 using an infrared signal. The light source units 10 can be configured to receive an infrared signal emitted from an external remote controller, for example, and to set the light output of each of the light source units 10. The light source units 10 are configured to set an address for discriminating between the light source units 10 by the infrared signal emitted from the remote controller.

[0082] Incidentally, in the light source unit 10, the light output can be increased by arranging many light emitting elements 1a close to the longitudinal end of the light source section 1. Also, in the light source unit 10, the communication performance can be improved as the antenna housing section 7c that houses the antenna section 2a protrudes toward the inner bottom surface 5ab of the cover member 5.

[0083] However, in the light source unit of the reference example shown in FIG. 11, when the wireless communication unit 2 is provided, the closer the light emitting element 1a is to the end of the light source unit 1 in the longitudinal direction, the more likely it is that the direct light from the light emitting element 1a will be blocked by the antenna housing 7c. In addition, in the light source unit, the more the antenna housing 7c protrudes toward the cover member 5, the more likely it is that the direct light from the light emitting element 1a will be blocked by the antenna housing 7c. In the light source unit of the reference example, when attempting to further improve the light output, the direct light from the light emitting element 1a may be blocked by the antenna housing 7c, and the shadow of the antenna housing 7c may be cast on the cover main body 5a. In FIG. 11, the direct light from the light emitting element 1a is illustrated by a two-dot dashed arrow, and the portion where the shadow of the cover main body 5a is cast is indicated by a dashed line area.

[0084] In the light source unit 10 of this embodiment, the wireless communication section 2 has an antenna housing section 7c with a plate-like outer shape. The antenna housing section 7c is disposed so as to intersect with the longitudinal direction of the light source section 1. The surface of the tip section 7f facing the cover member 5 forms an inclined surface 7fb that becomes farther away from the inner bottom surface 5ab as it approaches the light source section 1 along the longitudinal direction of the light source section 1.

[0085] In the light source unit 10 of the present embodiment, the tip 7f of the antenna accommodating portion 7c has an inclined surface 7fb, thereby improving the light output while preventing the shadow of the antenna accommodating portion 7c from being cast on the cover body 5a.

[0086] The assembly process of the light source unit 10 of this embodiment will be described below.

[0087] In the assembly process of the light source unit 10, the light source section 1, in which the light emitting element 1a is mounted on the mounting substrate 1b, is attached to the attachment section 4a of the support member 4. The support member 4 has an engagement piece 4t protruding from the surface of the bottom section 4cb. As shown in FIG. 6, the engagement piece 4t includes a first protruding piece 4ta protruding from the surface of the bottom section 4cb and a second protruding piece 4tb protruding from the tip of the first protruding piece 4ta in the direction toward the wireless communication section 2 along the longitudinal direction of the support member 4. The engagement piece 4t has an L-shaped external shape with the first protruding piece 4ta and the second protruding piece 4tb. The pair of engagement pieces 4t are provided opposite to each other in the short side direction of the mounting substrate 1b, and are configured to sandwich a notch groove 1bd that is notched in the thickness direction of the mounting substrate 1b.

[0088] In the assembly process, the wireless communication unit 2 is attached so that the antenna housing portion 7c protrudes from the side opposite to the attachment portion 4a of the support member 4 on which the mounting board 1b is mounted. The wireless communication unit 2 is attached to the support member 4 with the first protruding piece 4ta of the engagement piece 4t abutting against the edge of the notched groove 1bd of the mounting board 1b.

[0089] In the light source unit 10 of this embodiment, the housing case 7 is provided with a restricting portion 7s that faces the light source portion 1 and restricts the movement of the light source portion 1 in the longitudinal direction.

[0090] When the light source unit 1 and the wireless communication unit 2 are attached to the support member 4, the light source unit 10 is set so that the distance between the restricting portion 7s and the second protrusion 4tb in the longitudinal direction of the light source unit 1 is shorter than the length of the light source unit 1 sandwiched between the restricting portion 7s and the first protrusion 4ta.

[0091] In the light source unit 10, the restricting portion 7s can restrict the longitudinal movement of the light source portion 1, and therefore the wireless communication portion 2 can be used to prevent the light source portion 1 from coming off. In the light source unit 10 of the present embodiment, when the mounting board 1b is fixed to the support member 4, assembly can be performed without bending the locking piece 4s as in the first embodiment.

[0092] In the assembly process, with the antenna accommodating section 7c positioned so as to protrude from the opening 4aa of the support member 4 toward the cover member 5, the screw 7e is fixed to the screw fixing section 7r of the accommodating case 7 via the support member 4, and the wireless communication section 2 is fixed to the support member 4.

[0093] Next, in the assembly process, the cover member 5 is attached to the support member 4 so as to cover the mounting board 1b. In the assembly process, the protrusions 5e of the cover member 5 are fitted into the protrusions 4e of the support member 4. The cover member 5 is attached to the support member 4 by hooking the pair of protrusions 5e onto the corresponding protrusions 4e, respectively. In the assembly process, the cover member 5 and the support member 4 can be fixed together by appropriately screwing the protruding wall portion 5d of the cover member 5 and the side wall portion 4b of the support member 4. In the assembly process, the cover ends 5b are attached to both ends of the cover member 5 and the support member 4 in the longitudinal direction, so that the light source unit 10 can be assembled.

[0094] The light source unit 10 of this embodiment can be attached to a fixture body 31 to form a lighting fixture 30 in the same manner as in the first embodiment. [Explanation of symbols]

[0095] 1 Light source section 2 Wireless Communication Section 2a Antenna section 2b Communication circuit section 3 Holding body 4 Support member 4a Mounting part 4aa Opening 5 Cover member 5ab Inner bottom 6 Circuit Board 6ca 1st area 6cb 2nd area 7 Storage Case 7c Antenna housing 7f Tip 7fb Slope 7s regulatory department 10 Light source unit 10aa space 30 Lighting equipment 31 Equipment body

Claims

1. a light source unit having a long mounting board on which a plurality of light emitting elements are mounted; a wireless communication unit that performs wireless communication using radio waves as a medium; a holder that holds the wireless communication unit and that includes an elongated support member having a plate-like attachment portion to which the mounting board is attached and an opening that penetrates the attachment portion in a thickness direction; a lighting unit including a power supply unit that supplies power to the light source unit and the wireless communication unit, the lighting unit being disposed on the support member on an opposite side to the light source unit and held by the support member along a longitudinal direction of the support member; Equipped with the wireless communication unit includes an antenna unit capable of at least one of transmitting and receiving radio waves, a communication circuit unit electrically connected to the antenna unit, and a circuit board on which the antenna unit is provided, the circuit board being disposed so as to intersect with a surface of the attachment unit; a surface of the circuit board on which the antenna portion is formed is aligned along a direction perpendicular to the longitudinal direction of the support member; Light source unit.

2. The mounting portion is elongated, The surface on which the antenna portion is formed intersects with a longitudinal direction of the mounting portion. The light source unit according to claim 1 .

3. The circuit board is disposed at one end of the support member in the longitudinal direction. The light source unit according to claim 1 .

4. the antenna portion is provided in a first region of the circuit board, The communication circuit unit is provided in a second region of the circuit board. The light source unit according to any one of claims 1 to 3.

5. the wireless communication unit further includes a housing case that houses the circuit board, The housing case is made of a resin material and is configured to transmit radio waves. The light source unit according to any one of claims 1 to 4.

6. The holder further includes a cover member attached to the support member and covering the support member to form a space therein, The wireless communication unit is fixed to the support member. The light source unit according to any one of claims 1 to 5.

7. The cover member is made of a resin material and is configured to transmit radio waves. The antenna unit is disposed in the space formed by the cover member. The light source unit according to claim 6 .

8. The cover member has a translucency that transmits light from the light source unit. The light source unit according to claim 6 or 7.

9. the wireless communication unit further includes a housing case that houses the circuit board, The housing case is made of a resin material so as to be transparent to radio waves, the housing case includes an antenna housing portion that houses the antenna portion, The antenna housing portion is inserted into the opening and disposed in the space so as to protrude toward the cover member. The light source unit according to any one of claims 6 to 8.

10. The plurality of light emitting elements are mounted on the mounting substrate along a longitudinal direction of the mounting substrate. The light source unit according to any one of claims 1 to 9.

11. The wireless communication unit is further configured to perform infrared communication using infrared rays as a medium. The light source unit according to any one of claims 1 to 10.

12. A light source unit according to any one of claims 1 to 11, A fixture body that holds the light source unit; A lighting fixture comprising:

Images