Illuminating device and luminaire

Abstract

To provide an illuminating device that can realize both standardization of components and extraction efficiency of light.SOLUTION: An illuminating device 1 comprises a long board 11, a plurality of LED elements 12 arranged on the board 11 along the longitudinal direction of the board 11, a frame 20 supporting the board 11, a translucent cover 30 covering the plurality of LED elements 12, a power supply part 40 for controlling the light emitting state of the plurality of LED elements 12, and a functional unit 50 arranged opposite to an end part in the longitudinal direction of the board 11. In frame 20, a plurality of fixing parts 21a for fixing the board 11 to the frame 20 are provided along the longitudinal direction of the board 11. The LED elements 12 are not provided in a place in the board 11 opposite to the functional unit 50.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a lighting device and a lighting fixture including the lighting device. [Background technology]

[0002] Semiconductor light-emitting elements such as light-emitting diodes (LEDs) are small, highly efficient, and have a long lifespan, and are therefore used as light sources in a variety of products. For example, lighting devices using LEDs (LED lighting) are well known.

[0003] A lighting device using LEDs includes, for example, an LED module having a long substrate and multiple LED elements mounted on the substrate, a long frame that supports the LED module, and a long translucent cover that covers the LED module.

[0004] Conventionally, lighting devices using LEDs and having functional units have been proposed. For example, Patent Document 1 discloses an LED lamp having a motion sensor unit as a functional unit (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-065544 Summary of the Invention [Problem to be solved by the invention]

[0006] However, with the structure of a conventional lighting device that includes a functional unit, it is difficult to achieve both high light extraction efficiency and standardization of parts.

[0007] The present invention has been made in view of the above-mentioned problems, and aims to provide a lighting device and a lighting fixture that can achieve both standardization of parts and high light extraction efficiency. [Means for solving the problem]

[0008] In order to achieve the above object, one aspect of the lighting device according to the present invention comprises a long substrate, a plurality of LED elements arranged on the substrate along the longitudinal direction of the substrate, a frame supporting the substrate, a translucent cover covering the plurality of LED elements, a power supply unit controlling the light-emitting state of the plurality of LED elements, and a functional unit arranged opposite the longitudinal end of the substrate, wherein the frame has a plurality of fixing portions along the longitudinal direction of the substrate for fixing the substrate to the frame, and the LED elements are not arranged at the locations on the substrate opposite the functional units.

[0009] Furthermore, one aspect of a lighting fixture according to the present invention includes the above-described lighting device and a fixture body to which the lighting device is attached. [Effects of the Invention]

[0010] According to the present invention, it is possible to achieve both standardization of components and high light extraction efficiency. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of a lighting fixture according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the lighting fixture according to the embodiment. [Figure 3] FIG. 3 is a perspective view of the lighting device according to the embodiment as viewed from the light-transmitting cover side. [Figure 4] FIG. 4 is a perspective view of the illumination device according to the embodiment as viewed from the back side. [Figure 5] FIG. 5 is an external view of the lighting device according to the embodiment. [Figure 6] FIG. 6 is an exploded perspective view of the lighting device according to the embodiment. [Figure 7] FIG. 7 is a cross-sectional view of the lighting device according to the embodiment. [Figure 8]FIG. 8 is a cross-sectional perspective view of the lighting device according to the embodiment. [Figure 9] FIG. 9 is an exploded perspective view of a functional unit in the lighting device according to the embodiment. [Figure 10] FIG. 10 is an exploded perspective view of a functional unit in the lighting device according to the embodiment. [Figure 11] FIG. 11 is a cross-sectional view of the vicinity of an end portion in the longitudinal direction of the lighting device according to the embodiment. [Figure 12] FIG. 12 is a cross-sectional perspective view of the vicinity of an end portion in the longitudinal direction of the lighting device according to the embodiment. [Figure 13] FIG. 13 is a diagram showing the configuration of the lighting device of Comparative Example 1. As shown in FIG. [Figure 14] FIG. 14 is a diagram showing the configuration of the lighting device of Comparative Example 2. As shown in FIG. [Figure 15] FIG. 15 is a diagram for explaining the effect of the lighting device according to the embodiment. [Figure 16] FIG. 16 is a diagram showing the configuration of a lighting device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, components, the arrangement and connection of the components, steps, and the order of steps 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 represent the highest concept of the present invention will be described as optional components.

[0013] Note that each figure is a schematic diagram and is not necessarily an exact illustration. Furthermore, in each figure, substantially the same components are assigned the same reference numerals, and redundant explanations are omitted or simplified. Furthermore, 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 (the direction parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are axes that are mutually orthogonal and are both 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.

[0014] (Embodiment) First, the overall configuration of lighting fixture 100 according to the embodiment will be described with reference to Figures 1 and 2. Figure 1 is a perspective view of lighting fixture 100 according to the embodiment. Figure 2 is an exploded perspective view of lighting fixture 100 according to the embodiment.

[0015] 1 and 2, the lighting fixture 100 includes a fixture body 2 and a lighting device 1 attached to the fixture body 2. The lighting device 1 is an LED unit that uses LEDs. Therefore, the lighting fixture 100 is an LED lighting device that uses the lighting device 1 as a light source.

[0016] The lighting fixture 100 and the lighting device 1 are long. The total length of the lighting fixture 100 and the lighting device 1 is, for example, 2 feet, 4 feet, or 8 feet. Note that 1 foot (= 1 [ft]) is 304.8 [mm].

[0017] Lighting fixture 100 is installed on a predetermined construction material such as a ceiling or wall in a room of a building such as a facility, office, store, or residence. In this embodiment, lighting fixture 100 is a ceiling light installed on the ceiling of a building. As an example, lighting fixture 100 is a direct-ceiling mounted LED light, and lighting fixture body 2 is installed on the ceiling surface of the ceiling. In this case, lighting fixture 100 installed on the ceiling irradiates illumination light toward the floor, with the floor direction (floor side) being the predetermined direction. Illumination light from lighting fixture 100 is emitted from lighting device 1.

[0018] When installing the lighting fixture 100 on a ceiling, the fixture body 2 is attached to the ceiling using a bolt or the like. For example, as shown in Fig. 2, a bolt 101 protruding from the ceiling is inserted into a bolt insertion hole 2c provided in the fixture body 2, and a washer and a nut are attached to the bolt 101 to secure the fixture body 2 to the bolt.

[0019] The fixture body 2 holds the lighting device 1. The fixture body 2 is made of metal and is formed into a long, flat box shape in the Y-axis direction by bending a metal plate, etc. Specifically, when the fixture body 2 is installed on a ceiling, it is formed so as to have an inverted Fuji shape when viewed from the Y-axis direction.

[0020] 2, the device body 2 is provided with a recess 2a having a rectangular opening surface. The recess 2a is provided in an elongated shape along the longitudinal direction of the device body 2. In other words, the shape of the recess 2a in a top view (the shape of the opening surface) is rectangular with the Y-axis direction as the longitudinal direction.

[0021] The fixture body 2 also has inclined surface portions 2b on both sides of the recessed portion 2a in the X-axis direction (width direction) of the fixture body 2. Each inclined surface portion 2b has an inclined surface that slopes more toward the ceiling as it goes outward. These inclined surfaces may function as reflective surfaces.

[0022] The recess 2a of the fixture body 2 is a portion where the lighting device 1 is attached. Specifically, the recess 2a is a storage portion where the lighting device 1 is stored. The recess 2a has, for example, a substantially U-shaped cross section and has a pair of opposing side portions and a bottom portion. The pair of side portions are a pair of side walls erected on the bottom portion.

[0023] The lighting device 1 is fitted into the recess 2a of the fixture body 2. Specifically, the lighting device 1 is attached to the fixture body 2 so as to cover the recess 2a of the fixture body 2. In this embodiment, the lighting device 1 is detachably attached to the recess 2a of the fixture body 2. Therefore, the lighting device 1 can be attached to the recess 2a of the fixture body 2, and the lighting device 1 attached to the recess 2a of the fixture body 2 can be detached from the recess 2a.

[0024] The lighting device 1 and the fixture body 2 can be fixed together by hooking and engaging a hooking metal fitting 5 and an elastic holding member 6 (for example, a kick spring) provided on the lighting device 1 onto the fixture body 2. The hooking metal fitting 5 is a metal fitting for attaching the lighting device 1 to the fixture body 2. Note that the means for attaching the lighting device 1 and the fixture body 2 is not limited to using the hooking metal fitting 5 and the elastic holding member 6 made of a kick spring.

[0025] Next, the structure of the lighting device 1 included in the lighting fixture 100 will be described with reference to FIGS. 3 to 12. FIG. 3 is a perspective view of the lighting device 1 as viewed from the light-transmitting cover 30 side. FIG. 4 is a perspective view of the lighting device 1 as viewed from the back side. FIG. 5 is an external view of the lighting device 1. In FIG. 5, (a) is a rear view, and (b) is a side view. FIG. 6 is an exploded perspective view of the lighting device 1. FIG. 7 is a cross-sectional view of the lighting device 1. FIG. 8 is a cross-sectional perspective view of the lighting device 1. FIGS. 9 and 10 are exploded perspective views of the functional unit 50. FIG. 9 is a view of the functional unit 50 as viewed from above, and FIG. 10 is a view of the functional unit 50 as viewed from below. FIG. 11 is a cross-sectional view of the lighting device 1 near an end in the longitudinal direction. FIG. 12 is a cross-sectional perspective view of the lighting device 1 near an end in the longitudinal direction.

[0026] The lighting device 1 is an LED lighting device that uses LEDs. As shown in Figures 3 and 4, the lighting device 1 is a long, linear light source called a light bar. The lighting device 1 emits light of a predetermined color, such as white light, as illumination light.

[0027] 3 to 12, the lighting device 1 includes a light source module 10, a frame 20 on which the light source module 10 is disposed, a light-transmitting cover 30 that covers the light source module 10, a power supply unit 40, and a functional unit 50. The lighting device 1 emits illumination light using power supplied from the power supply unit 40.

[0028] The light source module 10 is a light-emitting unit that emits light to serve as illumination light. In this embodiment, the light source module 10 is elongated. In this case, the elongated light source module 10 may be a single light source unit having a length substantially equal to the overall length of the frame 20 in the longitudinal direction (Y-axis direction), or a plurality of light source modules 10 may be arranged along the longitudinal direction of the frame 20. As shown in FIG. 6, in this embodiment, two light source modules 10 are arranged along the longitudinal direction of the frame 20.

[0029] The light source module 10 is an LED module that uses an LED, and includes an elongated substrate 11 and an LED element 12 arranged on the substrate 11, as shown in FIGS.

[0030] The substrate 11 is a mounting substrate for mounting the LED elements 12. In this embodiment, the substrate 11 has an elongated shape extending in the longitudinal direction (Y-axis direction) of the frame 20. As an example, the substrate 11 is a printed wiring board on which metal wiring is formed in a predetermined pattern. Note that a resist made of an insulating resin material may be formed on the surface of the substrate 11 so as to cover the wiring in order to protect the wiring and ensure a dielectric strength voltage. The substrate 11 may be a single-sided wiring board in which wiring is formed only on the main surface on which the LED elements 12 are mounted, or a double-sided wiring board in which wiring is formed on both sides.

[0031] The base material constituting the substrate 11 may be a resin substrate made of an insulating resin material, a ceramic substrate made of a sintered body of a ceramic material such as alumina, or a metal-based substrate obtained by applying an insulating coating to the surface of a metal base material made of a metal material such as aluminum or copper.

[0032] When the substrate 11 is made of a resin substrate, examples of the resin substrate that can be used include a glass epoxy substrate (CEM-3, FR-4, etc.) made of glass fiber and epoxy resin, a paper phenol substrate (FR-1, FR-2) made of kraft paper or the like and phenol resin, a paper epoxy substrate (FR-3) made of paper and epoxy resin, or a polyimide substrate made of polyimide, etc. The substrate 11 may be a rigid substrate or a film-like flexible substrate.

[0033] The metal wiring formed on the substrate 11 is electrically connected to the power supply unit 40. In this case, the electrodes or connector terminals formed on the substrate 11 and the power supply unit 40 are connected by electric wires such as lead wires. The electric wires connecting the substrate 11 and the power supply unit 40 are inserted, for example, into through holes provided in the frame 20.

[0034] Furthermore, a notch-shaped cutout portion 11a is provided in the substrate 11. The cutout portion 11a is a recess formed by cutting out a part of an end portion in the width direction of the substrate 11. A fixing portion 21a provided on the frame 20 is engaged with the cutout portion 11a.

[0035] The substrate 11 is disposed on the frame 20. The substrate 11 is a flat plate with a constant thickness, and 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 on the translucent cover 30 side, and the second surface of the substrate 11 is the surface on the frame 20 side. As shown in FIG. 7 , in this embodiment, the second surface of the substrate 11 is in contact with the frame 20.

[0036] As shown in FIGS. 6 to 8 , LED elements 12 are arranged on the substrate 11. Specifically, a plurality of LED elements 12 are arranged on a first surface of the substrate 11. In this embodiment, the plurality of LED elements 12 are mounted on the substrate 11 in a linear row along the longitudinal direction (Y-axis direction) of the substrate 11 at predetermined intervals. Specifically, the plurality of LED elements 12 are mounted over substantially the entire length of the substrate 11 in the longitudinal direction. Therefore, the plurality of LED elements 12 are mounted along the longitudinal direction of the frame 20 and the translucent cover 30. Note that 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 when a direct current is supplied from the power supply unit 40 via an electric wire connecting the power supply unit 40 and the substrate 11.

[0037] The LED element 12 is an example of a light-emitting element. In this embodiment, each of the LED elements 12 is an individually packaged LED light source having an SMD structure. Therefore, the light source module 10 is an SMD-type LED module.

[0038] The SMD-type LED element 12 includes a white resin or ceramic container (package), an LED chip (bare chip) placed in the container, and a sealing material that seals the LED chip. In this embodiment, the LED element 12 is a white LED element 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) containing a yellow phosphor such as YAG is used as the sealing material filled into the container.

[0039] In this embodiment, all of the LED elements 12 emit the same light color. For example, the color temperature of the white light emitted by all of the LED elements 12 is the same. Note that the light source module 10 may include multiple LED elements 12 that emit different light colors. For example, the light source module 10 may include multiple LED elements 12 that emit white light with different color temperatures, or may include LED elements 12 that emit red light, LED elements 12 that emit green light, and LED elements 12 that emit blue light.

[0040] The light source module 10 configured in this manner is placed on a frame 20. Specifically, the substrate 11 of the light source module 10 is placed on the frame 20.

[0041] The frame 20 is an elongated mounting member (base member) to which the light source module 10 is attached. Specifically, the substrate 11 of the light source module 10 is attached to the frame 20.

[0042] The frame 20 is formed in an elongated shape in the Y-axis direction, similar to the light source module 10 and the fixture body 2. The light source module 10 is supported by the frame 20. That is, the frame 20 is a support member that supports the light source module 10. In the present embodiment, the frame 20 not only supports the light source module 10, but also supports the light-transmitting cover 30. Specifically, the substrate 11 on which the LED elements 12 are arranged is placed on the frame 20 and fixed to the frame 20, whereby the substrate 11 on which the LED elements 12 are arranged is supported by the frame 20.

[0043] The frame 20 is made of metal and is made of a metal material. In this embodiment, the frame 20 is made of a metal plate. The frame 20 is formed into a predetermined shape by, for example, performing roll forming and / or press working on a single sheet of metal (metal plate) made of SPCC (Steel Plate Cold Commercial; cold-rolled steel plate). The thickness of the metal plate that forms the frame 20 is, for example, 0.2 mm to 2 mm. In this embodiment, the frame 20 is formed by sheet metal working, so the thickness of the metal plate that forms the frame 20 is preferably 1 mm or less. Note that the method for manufacturing the frame 20 is not limited to roll forming and press working, and may also be aluminum extrusion molding, etc.

[0044] 6 and 7, the plate-shaped frame 20 has a main plate portion 21 and a pair of side plate portions 22. As shown in Fig. 6, the main plate portion 21 and the pair of side plate portions 22 both extend along the longitudinal direction (Y-axis direction) of the frame 20. Furthermore, the frame 20 is formed symmetrically in the XZ cross section with respect to the center of the frame 20 in the lateral direction, but this is not limited to this.

[0045] The main board 21 is the main body of the frame 20. The main board 21 is a plate-like body that is generally flat and has a constant thickness. The light source module 10 is arranged on the main board 21. Specifically, a substrate 11 on which LED elements 12 are arranged is placed on the main board 21. In other words, the main board 21 supports the substrate 11. In this embodiment, the substrate 11 and the main board 21 are in contact with each other. The LED elements 12 of the light source module 10 are arranged in the center of the main board 21 in the width direction, but this is not limited to this.

[0046] Main board 21 has a first surface which faces substrate 11, and a second surface facing away from the first surface. In the present embodiment, the first surface of main board 21 is a board mounting surface to which board 11 is attached. When lighting fixture 100 is installed on a ceiling, frame 20 is positioned so that the first and second surfaces of main board 21 are approximately parallel to the ceiling surface. In this case, the first surface of main board 21 is the surface facing the floor, and the second surface of main board 21 is the surface facing the ceiling.

[0047] As shown in FIGS. 6 and 8, the main board 21 is provided with fixing portions 21a for fixing the substrate 11 to the frame 20. As shown in FIG. 6, a plurality of fixing portions 21a are provided along the longitudinal direction of the substrate 11. The plurality of fixing portions 21a are provided at equal intervals along the longitudinal direction of the frame 20 (i.e., the longitudinal direction of the substrate 11). In this embodiment, each of the plurality of fixing portions 21a is a claw piece formed by cutting and raising a portion of the frame 20 made of a metal plate. The fixing portion 21a, which is a claw piece, is cut and raised toward the light source module 10 so as to engage with the substrate 11. Therefore, a portion of the fixing portion 21a is located from the surface of the substrate 11 toward the light emission side of the LED element 12. Note that the plurality of fixing portions 21a do not have to be provided at equal intervals along the longitudinal direction of the frame 20.

[0048] The substrate 11 placed on the main plate 21 is fixed to the main plate 21 by being locked by the claws that serve as the fixing portions 21a. For example, the substrate 11 can be fixed to the main plate 21 by inserting the claws that serve as the fixing portions 21a into the cutout portions 11a of the substrate 11 and sliding the substrate 11 to lock the substrate 11 into the fixing portions 21a. In this case, the substrate 11 may be fixed to the main plate 21 by crimping all of the claws that serve as the fixing portions 21a, or the substrate 11 may be fixed to the main plate 21 by locking the longitudinal ends of the substrate 11 with separate claws, for example.

[0049] The method for fixing the main plate 21 and the substrate 11 is not limited to a locking structure such as a claw. Also, although the main plate 21 and the substrate 11 are in contact with each other, the method is not limited to this. For example, a separate member such as a heat conductive sheet may be inserted between the main plate 21 and the substrate 11.

[0050] 6 and 7, the pair of side plate portions 22 are plate-shaped side portions and are formed as a pair of legs (feet) of the frame 20. As shown in FIG. 6, each of the pair of side plate portions 22 is a plate-shaped piece with a constant thickness and extends in the longitudinal direction (Y-axis direction) of the lighting device 1. Also, as shown in FIG. 7, each of the pair of side plate portions 22 extends toward the opposite side from the light emission side of the light source module 10. Specifically, the pair of side plate portions 22 extend toward the ceiling side. The tips of the pair of side plate portions 22 are located closer to the ceiling than the main plate portion 21.

[0051] A bent portion 22a is provided at the tip portion of each of the pair of side plate portions 22. The bent portion 22a is a folded portion formed by folding back the tip portion of the side plate portion 22 in the thickness direction. The bent portion 22a may be a hemmed bent structure formed by hemming, or a curled bent structure formed by curling and rolling up the tip portion of the side plate portion 22. Furthermore, the bent portion 22a is formed by being bent inward in the width direction, but may also be formed by being bent outward in the width direction. Furthermore, the side plate portion 22 does not necessarily have to have the bent portion 22a.

[0052] Mounting portions 33 of the light-transmitting cover 30 are attached to each of the pair of side plate portions 22. In the present embodiment, the light-transmitting cover 30 is attached to the frame 20 by snapping in. Specifically, the light-transmitting cover 30 can be fixed to the frame 20 by engaging abutment portions 33a provided on the mounting portions 33 of the light-transmitting cover 30 with bent portions 22a of the side plate portions 22 from the width direction of the light-transmitting cover 30.

[0053] As shown in FIGS. 7 and 8 , the light source module 10 supported by the frame 20 is covered with a translucent cover 30. The translucent cover 30 is a long, translucent cover member. The translucent cover 30 covers the LED elements 12 of the light source module 10. In this embodiment, the translucent cover 30 covers all of the LED elements 12 in the light source module 10. Furthermore, the translucent cover 30 covers not only the LED elements 12 but also the substrate 11 of the light source module 10, and is disposed opposite the substrate 11 so as to cover the multiple LED elements 12. In other words, the translucent cover 30 covers the entire light source module 10. In this way, the translucent cover 30 is attached to the frame 20 so as to cover the light source module 10.

[0054] The light-transmitting cover 30 is translucent and transmits light emitted from the light source module 10 (LED elements 12). In this embodiment, the light-transmitting cover 30 not only has light-transmitting properties but also has diffusive properties. In other words, the light-transmitting cover 30 is a diffusing cover. Therefore, the light from the LED elements 12 that enters the light-transmitting cover 30 is diffused (scattered) by the light-transmitting cover 30 and passes through the light-transmitting cover 30.

[0055] 7, the light-transmitting cover 30 also covers the frame 20 in which the light source module 10 is arranged. In the present embodiment, the light-transmitting cover 30 covers the entire frame 20 in which the light source module 10 is arranged. Note that the light-transmitting cover 30 is formed in an elongated shape in the Y-axis direction, similar to the light source module 10 and the frame 20.

[0056] The light-transmitting cover 30 is attached to the frame 20. The light-transmitting cover 30 and the frame 20 form a cylindrical body, and the light source module 10 is housed inside this cylindrical body.

[0057] As shown in Figure 7, the translucent cover 30 has a main portion 31 that covers the light source module 10, an extension portion 32 that is an extension portion that extends toward the inside of the translucent cover 30, and an attachment portion 33 to which the frame 20 is attached.

[0058] The main part 31 is a main body part of the translucent cover 30, and transmits light emitted from the LED elements 12 of the light source module 10 to irradiate the light to the outside. The main part 31 covers the light source module 10. In other words, the main part 31 faces the light source module 10. Therefore, the main part 31 has a surface facing the substrate 11 and the LED elements 12.

[0059] The main portion 31 constitutes the exterior of the light-transmitting cover 30. As shown in FIG. 6, the main portion 31 is elongated in the longitudinal direction (Y-axis direction) of the lighting device 1 and is formed in a gutter shape. The main portion 31 has, for example, a flat, approximately semi-cylindrical shape. Therefore, the main portion 31 has an open end face in the shape of an elongated rectangle extending in the Y-axis direction. Furthermore, the cross-sectional shape of the main portion 31 when cut along the X-axis direction has a curved shape that is curved in a substantially arc shape. Note that the shape of the main portion 31 is not limited to a barrel-like R-shape, and may be an angular shape such as a U-shape, a rectangular shape with a partially constricted side, or a cylindrical shape.

[0060] The extension portion 32 extends toward the light source module 10. In this embodiment, the extension portion 32 is connected to the main portion 31, and extends at an angle from the main portion 31 toward the light source module 10. The extension portion 32 also extends toward the main plate portion 21 of the frame 20. The tip of the extension portion 32 abuts against the main plate portion 21 of the frame 20. The extension portion 32 is a plate-shaped piece with a constant thickness, and extends in the Y-axis direction as shown in FIG. 6 .

[0061] A pair of extension portions 32 are provided. The pair of extension portions 32 are provided on either side of the light source module 10 in the short-side direction of the frame 20. Specifically, the pair of extension portions 32 are provided at positions facing each other in the X-axis direction. In this embodiment, the pair of extension portions 32 are formed symmetrically on the XZ cross section with respect to the center of the light-transmitting cover 30 in the short-side direction, but this is not limited to this.

[0062] Providing extension portion 32 on translucent cover 30 can increase the luminous flux of illumination light emitted from lighting device 1 toward the floor side, thereby improving the efficiency of light extraction toward the floor side of lighting device 1. Furthermore, increasing the luminous flux toward the floor side can improve the illuminance directly below lighting fixture 100.

[0063] Furthermore, the pair of extension portions 32 are preferably disposed outside the directional characteristics (light distribution angle) of the LED element 12. For example, since the light distribution angle (half beam angle) of the LED element 12 is 120°, the opening angle (inclination angle) of the pair of extension portions 32 is preferably 120° or more. This reduces the loss of light emitted from the LED element 12 at the translucent cover 30, and most of the light emitted from the LED element 12 passes through the translucent cover 30 and is emitted to the outside. In other words, the light extraction efficiency of the lighting device 1 can be improved. The opening angle of the pair of extension portions 32 is preferably 160° or more. Note that the upper limit of the opening angle of the pair of extension portions 32 is, for example, 170°. Note that, by forming the extension portions 32 in white (highly reflective and opaque) by two-color molding, the light extraction efficiency of the lighting device 1 can be further improved.

[0064] The mounting portion 33 extends on the side opposite to the light emission side of the light source module 10. Specifically, the mounting portion 33 is connected to the extension portion 32 and extends from a part of the extension portion 32 toward the ceiling. The mounting portion 33 is attached to a pair of side plate portions 22 of the frame 20.

[0065] In this embodiment, a pair of mounting portions 33 are provided to sandwich the frame 20. The pair of mounting portions 33 are formed as a pair of legs (feet) of the light-transmitting cover 30. The pair of mounting portions 33 have the same length in the Z-axis direction. As shown in FIG. 6, each of the pair of mounting portions 33 is a plate-like piece with a uniform thickness, and is formed in an elongated shape along the longitudinal direction (Y-axis direction) of the lighting device 1. The pair of mounting portions 33 also have the same length in the Y-axis direction.

[0066] 7, each of the pair of mounting portions 33 has abutting portions 33a that abut against the pair of side plate portions 22 of the frame 20. That is, the mounting portions 33 are in contact with the side plate portions 22 of the frame 20 at the abutting portions 33a. In this embodiment, the abutting portions 33a of the mounting portions 33 are tip portions of the mounting portions 33. Therefore, the tip portions of the mounting portions 33 are in contact with the side plate portions 22 of the frame 20.

[0067] In the present embodiment, the abutting portions 33a are, for example, bent portions formed by bending the tip portions of the mounting portions 33 into an L shape. Bent portions 22a provided at the tip portions of the side plate portions 22 of the frame 20 engage with the abutting portions 33a, thereby locking and fixing the pair of mounting portions 33 of the light-transmitting cover 30 and the pair of side plate portions 22 of the frame 20 to each other. As a result, the pair of mounting portions 33 of the light-transmitting cover 30 are fixed to the frame 20 in a manner of embracing the frame 20.

[0068] The side plate portion 22 of the frame 20 and the attachment portion 33 of the light-transmitting cover 30 may also be fixed together with a screw. In this case, the screw is screwed into the portion where the side plate portion 22 and the attachment portion 33 overlap from the outside of the attachment portion 33. Alternatively, the frame 20 and the light-transmitting cover 30 may be fixed together with a crimping structure. For example, the frame 20 and the light-transmitting cover 30 may be fixed together by crimping a portion of the side plate portion 22 of the frame 20 to the attachment portion 33 of the light-transmitting cover 30. The frame 20 and the light-transmitting cover 30 may also be fixed together with a separate part such as a metal fitting.

[0069] In the present embodiment, as described above, the light-transmitting cover 30 is attached to the frame 20 by snapping the attachment portions 33 of the light-transmitting cover 30 into the side plate portions 22 of the frame 20 from the width direction of the light-transmitting cover 30, but this is not limiting. For example, the light-transmitting cover 30 may be attached to the frame 20 by inserting the light-transmitting cover 30 from the end of the frame 20 in the longitudinal direction and sliding the light-transmitting cover 30.

[0070] The light-transmitting cover 30 configured in this manner is made of a light-transmitting resin material such as acrylic or polycarbonate, or a light-transmitting material such as glass. In this embodiment, the light-transmitting cover 30 is made of a light-transmitting resin material. In this case, the light-transmitting cover 30 can be a milky white cover member with a light-diffusing material dispersed therein. Such a light-transmitting cover 30 can be produced by resin molding a light-transmitting resin material mixed with a light-diffusing material into a predetermined shape. Light-reflective fine particles such as silica particles can be used as the light-diffusing material.

[0071] The light-transmitting cover 30 may be configured by forming a milky white light-diffusing film containing a light-diffusing material on the surface (inner or outer surface) of the transparent cover, rather than dispersing a light-diffusing material inside. The light-transmitting cover 30 may also be configured to have light-diffusing properties by applying a diffusing treatment, rather than using a light-diffusing material. For example, the light-transmitting cover 30 may be configured to have light-diffusing properties by applying a surface treatment such as a graining treatment to form minute irregularities on the surface of the transparent cover, or by printing a dot pattern on the surface of the transparent cover. Even when the light-transmitting cover 30 is subjected to a diffusing treatment, it may further contain a light-diffusing material to enhance light-diffusing properties.

[0072] In this embodiment, the main portion 31, the extension portion 32, and the attachment portion 33 that make up the light-transmitting cover 30 are integrally formed. Therefore, the main portion 31, the extension portion 32, and the attachment portion 33 are made of the same material. The thicknesses of the main portion 31, the extension portion 32, and the attachment portion 33 are not particularly limited, but are, for example, 0.5 mm to 5 mm.

[0073] In the present embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same resin material. However, this is not limiting. The main portion 31, the extension portion 32, and the mounting portion 33 may be made of two or more types of material. In this case, the main portion 31 and the extension portion 32 may be made of different resin materials. For example, the main portion 31 may be made of a translucent resin material, and part or all of the extension portion 32 may be made of a white or milky white resin material. By making part or all of the extension portion 32 white or milky white, the extension portion 32 can be given a reflective function. This allows light emitted from the LED element 12 that reaches the extension portion 32 to be reflected by the extension portion 32 and enter the main portion 31. As a result, the light extraction efficiency of the lighting device 1 can be improved. The translucent cover 30, partially made of a white or milky white resin material, can be formed by two-color molding. The extension portion 32 may also be molded using two colors and two layers. For example, the base layer of the extension portion 32 may be made of the same translucent resin material as the main portion 31, and the surface layer of the extension portion 32 (layer laminated on the base layer) may be made of a white or milky white resin material.

[0074] The light-transmitting cover 30 has both longitudinal ends closed. In the present embodiment, one longitudinal end of the light-transmitting cover 30 is closed by an end cap 60, and the other longitudinal end of the light-transmitting cover 30 is closed by a decorative cover 52 of the functional unit 50. Specifically, a long cylindrical body is formed by fixing the light-transmitting cover 30 and the frame 20, and the end cap 60 and the decorative cover 52 are attached to the light-transmitting cover 30 so as to close both longitudinal ends of this cylindrical body. The end cap 60 and the decorative cover 52 are fixed to the light-transmitting cover 30 by, for example, welding or an adhesive.

[0075] The end cap 60 may or may not be translucent. The translucent end cap 60 allows light emitted from the light source module 10 to pass through it. That is, the light emitted from the LED element 12 of the light source module 10 passes through the end cap 60 and is extracted to the outside of the end cap 60. The translucent end cap 60 may be transparent or may have diffusive properties. By using an end cap 60 that is translucent and diffusive, the light from the LED element 12 that enters the end cap 60 passes through the end cap 60 while being diffused (scattered) by the end cap 60.

[0076] The end cap 60 is made of a translucent material such as a translucent resin material, such as acrylic or polycarbonate, or a glass material. In this embodiment, the end cap 60 is made of a translucent resin material. In this case, the end cap 60 can be a diffusing member having a light diffusing material dispersed therein. The end cap 60 may be made of the same material as the translucent cover 30, or may be made of a different material from the translucent cover 30.

[0077] The power supply unit 40 is a power supply device for supplying power to the light source module 10. The power supply unit 40 is configured with a power supply circuit that generates power for causing the lighting device 1 to emit light. The power supply circuit that configures the power supply unit 40 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., and supplies the DC power to the LEDs of the lighting device 1. The power supply circuit includes a control circuit that controls the light emission state of the light source module 10. Note that the power supply unit 40 may also include other control circuits such as a dimming circuit or a wireless communication circuit.

[0078] The power supply unit 40 controls the light emission state of the light source module 10. Specifically, the power supply unit 40 controls the light emission state of the multiple LED elements 12 in the light source module 10. For example, the power supply unit 40 can turn the multiple LED elements 12 on and off. That is, the power supply unit 40 can switch the multiple LED elements 12 between on and off. The power supply unit 40 can also perform dimming control of the light source module 10. That is, the power supply unit 40 can change the brightness (light output) of the multiple LED elements 12.

[0079] If the light source module 10 is configured to be color adjustable, the power supply unit 40 can also adjust the color of the light source module 10. That is, the power supply unit 40 can change the color of the light emitted from the light source module 10. For example, the power supply unit 40 can change the color temperature of the light emitted from the light source module 10.

[0080] 7, the power supply unit 40 has a circuit board 41 such as a printed wiring board, and a plurality of circuit components 42 mounted on the circuit board 41. The circuit board 41 is a printed wiring board on which metal wiring such as copper foil is patterned. The plurality of circuit components 42 constitute a power supply circuit. The plurality of circuit components 42 are, for example, capacitive elements such as electrolytic capacitors and ceramic capacitors, coil elements (inductors) such as choke coils and choke transformers, transistor elements such as FETs, resistive elements such as resistors, or electronic components such as diodes.

[0081] The power supply unit 40 further includes a circuit case 43 that houses a circuit board 41 on which a plurality of circuit components 42 are mounted. The circuit case 43 is a cover that covers the circuit board 41 on which the circuit components 42 are mounted. The circuit case 43 is a metal housing made of a metal plate. Specifically, the circuit case 43 is a housing with an opening, and includes a bottom plate and side plates that stand on the bottom plate. The circuit case 43 is arranged so that the opening of the circuit case 43 is located on the frame 20 side. In other words, the portion of the circuit case 43 on the frame 20 side is open. The circuit case 43 may be a resin housing. Furthermore, another case may be provided inside the circuit case 43.

[0082] The power supply unit 40 is disposed on the rear side of the lighting device 1. Specifically, the power supply unit 40 is attached to the ceiling side surface of the frame 20. For example, the power supply unit 40 is fixed to the frame 20 by screwing a part of the circuit case 43 to the main board portion 21 of the frame 20.

[0083] AC power is supplied from an external power source such as a commercial power source to the power supply unit 40. Specifically, a power line 102 (such as a VVF cable) is inserted from the ceiling into a through-hole in the fixture body 2 (see FIG. 2) and connected to a power terminal block provided in the lighting device 1, and the power supply unit 40 receives AC power via the power line 102.

[0084] The functional unit 50 has functions other than the basic function of emitting illumination light in the lighting device 1. In other words, it is a function expansion unit that expands the functions of the lighting device 1. In this embodiment, the functional unit 50 has a function that acts on the power supply unit 40. For example, the functional unit 50 controls the light emission state of the multiple LED elements 12 in the light source module 10. In this case, a sensor unit having a human presence sensor or an illuminance sensor is used as the functional unit 50. If the functional unit 50 has a human presence sensor, the LED elements 12 can be automatically turned on by detecting the presence of a person with the human presence sensor. In other words, the LED elements 12 can be turned on. Furthermore, if the functional unit 50 has an illuminance sensor, the illuminance sensor can detect the illuminance (brightness) around the lighting device 1, and automatically turn on the LED elements 12 when the illuminance in the surroundings decreases (e.g., when daytime changes to night), and automatically turn off the LED elements 12 when the illuminance in the surroundings increases (e.g., when nighttime changes to morning).

[0085] When the functional unit 50 is a sensor unit, the functional unit 50 operates using power supplied from the power supply unit 40. In this case, as shown in FIG. 5(a), the functional unit 50 is connected to the secondary side of the power supply unit 40. In other words, the functional unit 50 is connected to the power output side (DC side) of the power supply unit 40. Specifically, the functional unit 50 and the power supply unit 40 are connected by a power supply line 71. Furthermore, when the functional unit 50 is a sensor unit, the functional unit 50 outputs a detected detection signal or a control signal based on the detected detection signal to the power supply unit 40. Therefore, the functional unit 50 and the power supply unit 40 are also connected by a control signal line 72.

[0086] As shown in FIGS. 9 and 10, the functional unit 50 includes a functional module 51, a decorative cover 52, and a mounting base 53.

[0087] As shown in FIG. 11, in this embodiment, the functional module 51 is a sensor unit, and includes a human sensor 51a, an illuminance sensor 51b, a sensor substrate 51c, and a case 51d.

[0088] The human presence sensor 51a has a function of detecting the presence of a person. The human presence sensor 51a has a pyroelectric element and a condenser lens. The condenser lens of the human presence sensor 51a is exposed from the case 51d. Specifically, the condenser lens is fixed to the case 51d so that a part of the condenser lens protrudes from a through-hole provided in the case 51d.

[0089] Illuminance sensor 51b detects the brightness of light incident on illuminance sensor 51b. A through-hole is provided in a portion of case 51d facing illuminance sensor 51b. Illuminance sensor 51b detects the brightness of light passing through this through-hole.

[0090] The motion sensor 51a and the illuminance sensor 51b are mounted on a sensor substrate 51c. The sensor substrate 51c is, for example, a printed wiring board on which metal wiring is formed in a predetermined pattern. A plurality of circuit components that constitute a sensor circuit are mounted on the sensor substrate 51c.

[0091] The case 51d is a cover that covers the human presence sensor 51a, the illuminance sensor 51b, and the sensor board 51c. The human presence sensor 51a, the illuminance sensor 51b, and the sensor board 51c are housed in the case 51d. The case 51d may be made of a light-transmitting material or a non-light-transmitting material. The case 51d may also be made of an insulating resin material or a metal material.

[0092] The case 51d is exposed from the light-transmitting cover 30. Therefore, it is preferable that the case 51d be made of a material of a similar color to that of the light-transmitting cover 30. For example, since the light-transmitting cover 30 is milky white, it is preferable that the case 51d be made of a milky white light-transmitting resin material or a white opaque resin material. This makes the case 51d and the light-transmitting cover 30 appear to be integrated, thereby improving the design.

[0093] 11 and 12, the decorative cover 52 and the mounting base 53 are outer casing members of the functional unit 50 and cover the functional module 51. The decorative cover 52 covers the functional module 51 from above, and the mounting base 53 covers the functional module 51 from below. The decorative cover 52 and the mounting base 53 may be made of a light-transmitting material or a non-light-transmitting material. Furthermore, the decorative cover 52 and the mounting base 53 may be made of an insulating resin material or a metal material.

[0094] In the present embodiment, the decorative cover 52 is exposed from the translucent cover 30. Therefore, the decorative cover 52 is preferably made of a material of a similar color to that of the translucent cover 30. For example, since the translucent cover 30 is milky white, the decorative cover 52 is preferably made of a milky white translucent resin material or a white opaque resin material. This gives the appearance that the decorative cover 52 and the translucent cover 30 are integrated, thereby improving the design.

[0095] The mounting base 53 is a mounting member for mounting the functional module 51 to the frame 20. The mounting base 53 also supports the functional module 51. The functional module 51 is fixed to the mounting base 53. The mounting base 53 to which the functional module 51 is fixed is fixed to the frame 20. For example, the two legs of the mounting base 53 are inserted into through holes provided in the main plate portion 21 of the frame 20, and the mounting base 53 is fixed to the main plate portion 21 of the frame 20 with screws.

[0096] 3 to 5, the functional unit 50 configured in this manner is disposed at an end in the longitudinal direction of the lighting device 1. As shown in Fig. 11, the functional unit 50 is disposed so as to face an end in the longitudinal direction of the light source module 10. Specifically, the functional unit 50 is disposed so as to face an end in the longitudinal direction of the substrate 11.

[0097] 11, however, no LED elements 12 are provided on the substrate 11 at a location facing the functional unit 50. In other words, in relation to the light source module 10, the functional unit 50 does not face the LED elements 12, but faces only the substrate 11. In this embodiment, the multiple LED elements 12 are arranged outside the decorative cover 52 and the mounting base 53. In other words, the multiple LED elements 12 not only do not overlap with the functional module 51 in a top view, but also do not overlap with the decorative cover 52 and the mounting base 53.

[0098] As described above, in the lighting device 1 of the present embodiment, the substrate 11 extends to a position facing the functional unit 50, but no LED elements 12 are mounted at the position facing the functional unit 50. In other words, only the substrate 11 without any LED elements 12 is present below the functional unit 50, and an area where no LED elements 12 are intentionally mounted is set at the longitudinal end of the substrate 11. Note that, on the surface of the substrate 11 located below the functional unit 50, no LED elements 12 are arranged, but a wiring pattern may be formed, or wiring electrodes on which LED elements 12 can be mounted may be formed.

[0099] Furthermore, at least one of the multiple fixing portions 21a (claw pieces) provided on the frame 20 is provided at a location on the substrate 11 that faces the functional unit 50. That is, the multiple fixing portions 21a include fixing portions 21a that fix the substrate 11 in an area facing the functional unit 50 (an area where no LED elements 12 are mounted). Specifically, at least one of the multiple fixing portions 21a is provided at a position that overlaps with any of the functional module 51, the decorative cover 52, and the mounting base 53 in a top view. In this embodiment, as shown in FIG. 11 , the fixing portion 21a located at the endmost position of the multiple fixing portions 21a is provided at a position that overlaps with all of the functional module 51, the decorative cover 52, and the mounting base 53.

[0100] Next, the features of the lighting device 1 according to the present embodiment will be described, including the process by which the present invention was achieved, with reference to Figs. 13 to 15. Fig. 13 is a diagram showing the configuration of a lighting device 1X of Comparative Example 1. Fig. 14 is a diagram showing the configuration of a lighting device 1Y of Comparative Example 2. Fig. 15 is a diagram for explaining the effect of the lighting device 1 according to the embodiment.

[0101] In a light source module 10X of a lighting device 1X of Comparative Example 1 shown in Fig. 13, LED elements 12 are mounted up to the longitudinal end of a substrate 11X. Therefore, the LED elements 12 mounted on the longitudinal end of the substrate 11X face the functional unit 50. In other words, the LED elements 12 are arranged up to directly below the functional unit 50, and some of the LED elements 12 are covered by the functional unit 50. As a result, light emitted from the LED elements 12 mounted on the longitudinal end of the substrate 11X is blocked by the functional unit 50, reducing the light extraction efficiency of the lighting device 1X.

[0102] Therefore, it is conceivable to shorten the length of the light source module 10Y that faces the functional unit 50, as in the lighting device 1Y of Comparative Example 2 shown in Fig. 14. In other words, it is conceivable to shorten the length of the substrate 11Y so that the LED elements 12 are not present directly below the functional unit 50.

[0103] However, if the length of the substrate 11Y is shortened, not only will it be impossible to share the components of the substrate 11Y between the two light source modules 10Y, but the position of the fixing portion 21a (claw piece) provided on the frame 20 will be incomplete, and the longitudinal end of the substrate 11Y may become loose, as shown by the dashed line in Fig. 14. This may result in a deterioration in the ability to dissipate heat generated by the LED elements 12, or may cause the substrate 11Y to be damaged due to the load applied to the substrate 11Y when the lighting device 1Y is subjected to an impact.

[0104] Therefore, in order to hold down the longitudinal ends of the shortened substrate 11Y, it is conceivable to change the positions of the multiple fixing portions 21a (claw pieces) on the frame 20. For example, it is conceivable to add fixing portions 21a for holding down the longitudinal ends of the shortened substrate 11Y, or to change the positions of all fixing portions 21a on the frame 20 so that the fixing portions 21a are provided at equal intervals.

[0105] However, if the position of the fixing portion 21a is changed, it becomes necessary to manufacture a new frame only for the type of lighting device equipped with the functional unit 50. In other words, it becomes necessary to manufacture separate frames with different positions of the fixing portion 21a for lighting devices equipped with the functional unit 50 and lighting devices not equipped with the functional unit 50. For this reason, it is not possible to standardize the frame components between lighting devices equipped with the functional unit 50 and lighting devices not equipped with the functional unit 50.

[0106] In contrast, in the lighting device 1 of this embodiment shown in Figure 15, the functional unit 50 is arranged opposite the longitudinal end of the substrate 11, and no LED element 12 is provided at the location on the substrate 11 opposite the functional unit 50.

[0107] With this configuration, even if the substrate 11 extends to directly below the functional unit 50, there are no LED elements 12 facing the functional unit 50. In other words, no LED elements 12 are arranged directly below the functional unit 50. This prevents the light emitted from the multiple LED elements 12 arranged on the substrate 11 from being blocked by the functional unit 50, thereby preventing a decrease in the light extraction efficiency of the lighting device 1. As a result, loss of luminous flux from the lighting device 1 can be prevented.

[0108] Moreover, since the functional unit 50 faces the longitudinal end of the substrate 11, there is no need to shorten the substrate 11, and the components of the substrate 11 can be standardized. Furthermore, since the substrate 11 is not shortened, there is no need to change the position of the fixing portion 21a in the frame 20. This also allows the components of the frame 20 to be standardized. In other words, there is no need to manufacture a new frame only for the type of lighting device 1 equipped with the functional unit 50, and the components of the substrate 11 and the frame 20 can be standardized between the lighting device 1 equipped with the functional unit 50 and the lighting device not equipped with the functional unit 50.

[0109] As described above, according to the lighting device 1 of this embodiment, it is possible to achieve both standardization of the components of the substrate 11 and the frame 20 and high light extraction efficiency of the lighting device 1.

[0110] Moreover, although the LED elements 12 can be a heat source, the absence of the LED elements 12 below the functional unit 50 (i.e., the absence of the functional unit 50 in the light emission direction of the LED elements 12) not only prevents a decrease in the light extraction efficiency of the lighting device 1, but also prevents the functional unit 50 from being affected by the heat generated by the LED elements 12. In other words, since there is only the substrate 11 below the functional unit 50 without the LED elements 12 arranged thereon, and there is no heat source, the functional unit 50 is not affected by the heat.

[0111] In addition, in the lighting device 1 of this embodiment, the functional unit 50 has a functional module 51, a decorative cover 52 which is an outer casing member covering the functional module 51, and a mounting base 53, and the multiple LED elements 12 are arranged outside the decorative cover 52 and the mounting base 53.

[0112] With this configuration, there are no LED elements 12 facing the decorative cover 52 and the mounting base 53, which prevents the light emitted from the multiple LED elements 12 from being blocked by the decorative cover 52 and the mounting base 53. This effectively prevents a decrease in the light extraction efficiency of the lighting device 1.

[0113] In the lighting device 1 according to the present embodiment, at least one of the plurality of fixing portions 21a provided on the frame 20 is provided at a location on the substrate 11 opposite the functional unit 50.

[0114] With this configuration, even if the substrate 11 extends to directly below the functional unit 50, the longitudinal end of the substrate 11 can be fixed by the fixing portion 21a. This makes it possible to prevent the longitudinal end of the substrate 11 from floating. Furthermore, since a conventional frame 20 having the fixing portion 21a provided at a position opposite the functional unit 50 can be used, it is possible to easily standardize the components of the frame 20.

[0115] In the lighting device 1 according to the present embodiment, the multiple fixing portions 21a are provided at equal intervals along the longitudinal direction of the substrate 11.

[0116] This configuration facilitates the standardization of components of the frame 20. Furthermore, since the multiple fixing portions 21a are arranged at equal intervals, the entire substrate 11 can be tightly attached to the frame 20, allowing heat generated by the LED elements 12 to be efficiently conducted to the frame 20 via the substrate 11. This allows the heat generated by the LED elements 12 to be effectively dissipated. Furthermore, by dissipating the heat generated by the LED elements 12, it is possible to suppress a rise in the temperature of the air below the functional unit 50 while suppressing a rise in the temperature of the air on the light-emitting side of the LED elements 12. In other words, when the lighting device 1 is in use (when turned on), the temperature of the frame 20 rises not only due to the heat transmitted from the LED elements 12 via the substrate 11 but also due to the heat transmitted from the power supply unit 40. However, since only the substrate 11 without LED elements 12 is present below the functional unit 50, the substrate 11 functions as a heat insulator, insulating the heat from the frame 20 as the temperature of the frame 20 rises. Therefore, compared to when there is no substrate 11 below the functional unit 50 (Comparative Example 2 in FIG. 14), the functional unit 50 can be prevented from being affected by heat from the frame 20. Moreover, since the multiple fixing portions 21a are arranged at equal intervals, the load on the substrate 11 can be evenly distributed when an impact is applied to the lighting device 1, and damage to the substrate 11 can also be prevented.

[0117] As mentioned above, the LED elements 12 are not arranged on the surface of the substrate 11 located below the functional unit 50, and wiring patterns and wiring electrodes may be formed thereon, but these wiring patterns and wiring electrodes do not affect the heat dissipation described above.

[0118] In addition, in the lighting device 1 according to the present embodiment, the multiple fixing portions 21a provided on the frame 20 are engaged with the cutout portions 11a provided on the substrate 11. Specifically, the fixing portions 21a are raised pieces formed by cutting out parts of the frame 20.

[0119] With this configuration, the substrate 11 can be easily fixed to the frame 20 by the fixing portion 21a.

[0120] (Variation) Although the lighting fixture and lighting device according to the present invention have been described above based on the embodiments, the present invention is not limited to these embodiments.

[0121] For example, in the above embodiment, the functional unit 50 is connected to the secondary side (power output side) of the power supply unit 40, but this is not limiting. Specifically, as in the lighting device 1A shown in FIG. 16, the functional unit 50A may be connected to the primary side of the power supply unit 40. That is, the functional unit 50A may be connected to the power supply side (AC side) of the power supply unit 40. In this case, the functional unit 50A has, for example, a pull switch. The pull switch has a function that acts on the power supply unit 40. Specifically, the pull switch supplies and cuts off AC power to the power supply unit 40. In this way, the pull switch controls the light emission state of the multiple LED elements 12. That is, by switching the pull switch on and off, the multiple LED elements 12 can be switched between a lit state and an unlit state.

[0122] In the above embodiment, the functional module 51 of the functional unit 50 is a sensor module including sensors such as the motion sensor 51a and the illuminance sensor 51b. However, this is not limiting. For example, the functional module 51 may be a wireless module (Bluetooth, Wi-Fi, etc.) having an antenna and a control circuit for receiving wireless signals, or an infrared module having a light-receiving element and a control circuit for receiving infrared signals. The wireless signal or infrared signal may be, for example, a remote control signal for turning the LED elements 12 on and off or adjusting the brightness and color of the LED elements 12, or a setting signal for performing various settings on the lighting device 1. Note that the term "wireless" is not limited to a specific frequency band and may broadly refer to wireless communication including radio waves and light (including infrared). The antenna in the wireless module may be, for example, a pattern antenna, a chip antenna, or a rod antenna. The wireless module and the power supply unit 40 may be connected via a wired connection or wirelessly via wireless communication. In addition, the functional module 51 may have a second light source separate from the LED element 12 (first light source) of the light source module 10, such as a light source for monitor display (monitor lamp) or an emergency light source that turns on in an emergency.

[0123] Furthermore, in the above embodiment, the functional unit 50 has a function of acting on the power supply unit 40 and controlling the light emission states of the plurality of LED elements 12, but this is not limiting. For example, the functional unit 50 may not have a function of acting on the power supply unit 40, or may not control the light emission states of the plurality of LED elements 12. Specifically, the functional unit 50 may have a wireless relay function for wirelessly connecting lighting devices 1 to each other or for wirelessly connecting the lighting device 1 to other electrical devices. Furthermore, in the above embodiment, the functional unit 50 operates using power supplied from the power supply unit 40, but this is not limiting. For example, the functional unit 50 may not operate using power supplied from the power supply unit 40.

[0124] In the above embodiment, the fixing portion 21a for fixing the substrate 11 to the frame 20 is a cut-and-raised piece formed by cutting and raising a part of the frame 20, but this is not limiting. For example, the fixing portion 21a may be a fixing member such as a screw that is separate from the frame 20.

[0125] Furthermore, in the above embodiment, light source module 10 is an SMD-type LED module that uses an SMD-type LED light source in which LED chips are mounted in a package as LED elements 12, but this is not limited thereto. For example, light source module 10 consisting of substrate 11 and LED elements 12 may be a COB (Chip On Board)-type LED module. In this case, LED chips (bare chips) themselves may be used as LED elements 12, and a plurality of LED elements 12 (LED chips) may be linearly arranged in one or more rows on substrate 11. The plurality of LED elements 12 may be collectively sealed in each row with a sealing member (e.g., a phosphor-containing resin) or the plurality of LED elements 12 may be individually sealed.

[0126] In the above embodiment, lighting fixture 100 is a ceiling-mounted lighting fixture in which fixture body 2 is directly installed on the ceiling surface, but this is not limited to this. For example, lighting fixture 100 may be a ceiling-embedded lighting fixture in which fixture body 2 is embedded in the ceiling.

[0127] In addition, the present invention also includes forms obtained by applying various modifications to the above-described embodiments that would occur to those skilled in the art, and forms realized by arbitrarily combining the components and functions of the above-described embodiments within the scope of the present invention. Furthermore, the present invention also includes any combination of one or more components in each of the multiple claims described in the claims at the time of filing. Furthermore, when the dependent claims described in the claims at the time of filing are made into a multiple claim or multiple multiple claims that cite any multiple claims (for example, when a multiple claim or multiple multiple claims that cite all of the parent claims of each claim), all forms obtained by combining all of the claims included in the multiple claim or multiple multiple claims are also included in the present invention. [Explanation of symbols]

[0128] 1. 1A lighting device 2. Device body 11 Circuit Board 12 LED elements 20 frames 21a Fixed part 30 Translucent cover 40 Power supply section 50, 50A functional unit 51 Functional Modules 52 Decorative cover (outer part) 53 Mounting base (external member) 100 lighting fixtures

Claims

1. A long substrate; a plurality of LED elements arranged on the substrate along a longitudinal direction of the substrate; a frame for supporting the substrate; a light-transmitting cover that covers the plurality of LED elements; a power supply unit that controls the light emission states of the plurality of LED elements; a functional unit disposed opposite an end of the substrate in the longitudinal direction, the frame is provided with a plurality of fixing portions for fixing the substrate to the frame along the longitudinal direction of the substrate, The LED element is not provided at a location on the substrate facing the functional unit. Lighting equipment.

2. The functional unit has a function of acting on the power supply unit. The lighting device according to claim 1 .

3. The functional unit is a human presence sensor, an illuminance sensor, or a pull switch.

3. The lighting device according to claim 2.

4. The functional unit controls the light emitting states of the plurality of LED elements.

4. The lighting device according to claim 3.

5. The functional unit is connected to the secondary side of the power supply unit.

3. The lighting device according to claim 2.

6. The functional unit is connected to the primary side of the power supply unit.

3. The lighting device according to claim 2.

7. The functional unit operates using power supplied from the power supply unit. The lighting device according to any one of claims 1 to 5.

8. the functional unit includes a functional module and an outer shell member that covers the functional module; The plurality of LED elements are arranged outside the outer casing member. The lighting device according to any one of claims 1 to 6.

9. The outer shell member is made of an opaque material.

9. The lighting device according to claim 8.

10. the outer shell member is a decorative cover exposed from the light-transmitting cover, The decorative cover is made of a material of a similar color to that of the translucent cover.

9. The lighting device according to claim 8.

11. At least one of the plurality of fixing portions is provided at a position on the substrate facing the functional unit. The lighting device according to any one of claims 1 to 6.

12. The plurality of fixing portions are provided at equal intervals along the longitudinal direction of the substrate. The lighting device according to any one of claims 1 to 6.

13. The substrate has a notch, The plurality of fixing portions are engaged with the notches. The lighting device according to any one of claims 1 to 6.

14. The plurality of fixing portions are raised pieces formed by cutting and raising parts of the frame.

14. The lighting device of claim 13.

15. The lighting device according to any one of claims 1 to 6, and a fixture body to which the lighting device is attached. Lighting fixtures.

Images