LED lighting device and LED luminaire

Abstract

To provide an LED lighting device capable of securing a space for a recessed part of a frame while securing the strength of the frame.SOLUTION: An LED lighting device includes a base plate 10 on which an LED 20 is arranged, a frame 40 on which the base plate 10 is mounted, and a cover member 30 mounted on the frame 40 to cover the base plate 10, the frame 40 having a long-sized main plate part 41 on which the base plate 10 is mounted, and a pair of side plate parts 42 protruding from both ends in the transverse direction of the main plate part 41 to the opposite sides of the LED 20 side, the protrusion amount of at least part of one side plate part 42 of the pair of side plate parts 42 being smaller than the protrusion amount of the other side plate part of the pair of side plate parts 42.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an LED lighting device and an LED lighting fixture equipped with the LED lighting device. [Background technology]

[0002] LED lighting fixtures that use LEDs (Light Emitting Diodes) are known. For example, a lighting fixture that is installed on a ceiling includes a long LED lighting device called a light bar and a long fixture body that has a recess into which the LED lighting device can be detachably attached (Patent Document 1).

[0003] This type of LED lighting device comprises a long substrate, multiple LEDs mounted on the substrate, a long, translucent cover member that covers the multiple LEDs, and a long frame that supports the substrate and to which the cover member is attached.

[0004] The frame has, for example, a main plate to which the circuit board is attached and a pair of side plates bent from both ends of the main plate in the short direction (width direction). In other words, the frame has a recess surrounded by the main plate and the pair of side plates. This recess in the frame not only accommodates conductive wires such as power lines, but also accommodates a power supply unit, mounting members such as hooks, and function expansion modules such as a sensor unit. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-176747 Summary of the Invention [Problem to be solved by the invention]

[0006] However, since the space (empty space) of the recessed portion of the frame is narrow, it may be difficult to store components such as conductive wires, a power supply unit, mounting members, and a function expansion module in the recessed portion of the frame. On the other hand, if the width of each of the pair of side plate portions (the amount of protrusion from the main plate portion) is increased in an attempt to widen the space of the recessed portion of the frame, the strength of the frame may be reduced.

[0007] The present invention has been made in consideration of these problems, and aims to provide an LED lighting device and an LED lighting fixture that can ensure the strength of the frame while also ensuring space for the recessed part of the frame. [Means for solving the problem]

[0008] In order to achieve the above object, one embodiment of the LED lighting device according to the present invention comprises a substrate on which LEDs are arranged, a frame to which the substrate is attached, and a cover member attached to the frame so as to cover the substrate, wherein the frame has a long main plate portion to which the substrate is attached, and a pair of side plate portions protruding from each of both ends of the main plate portion in the short direction to the opposite side from the LED side, and the amount of protrusion of at least a portion of one of the pair of side plate portions is smaller than the amount of protrusion of the other of the pair of side plate portions.

[0009] An embodiment of an LED lighting fixture according to the present invention includes an LED lighting device and a fixture body that holds the LED lighting device. [Effects of the Invention]

[0010] This allows the strength of the frame to be ensured while also ensuring space for the recessed portion of the frame. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of an LED lighting fixture according to the first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the LED lighting fixture according to the first embodiment. [Figure 3]FIG. 3 is a cross-sectional view of the LED lighting fixture according to the first embodiment. [Figure 4] FIG. 4 is a perspective view of the LED lighting device according to the first embodiment as viewed from the cover member side. [Figure 5] FIG. 5 is a perspective view of the LED lighting device according to the first embodiment as seen from the back side. [Figure 6] FIG. 6 is a cross-sectional perspective view of the LED lighting device according to the first embodiment. [Figure 7] FIG. 7 is an exploded perspective view of the LED lighting device according to the first embodiment. [Figure 8] FIG. 8 is a diagram for explaining a method for attaching the LED lighting device to the fixture body in the LED lighting fixture according to embodiment 1. In FIG. [Figure 9] FIG. 9 is a diagram for explaining a method for attaching an LED lighting device to a fixture body in an LED lighting fixture of a comparative example. [Figure 10] FIG. 10 is a diagram showing a configuration of an LED lighting device according to a first modification of the first embodiment. [Figure 11] FIG. 11 is a diagram showing a configuration of an LED lighting device according to Modification 2 of Embodiment 1. In FIG. [Figure 12] FIG. 12 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the second embodiment. [Figure 13] FIG. 13 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the third embodiment. [Figure 14] FIG. 14 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the fourth embodiment. [Figure 15] FIG. 15 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the fifth embodiment. [Figure 16] FIG. 16 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the sixth embodiment. [Figure 17] FIG. 17 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the seventh embodiment. [Figure 18]FIG. 18 is a cross-sectional view of an LED lighting device according to a modification of the seventh embodiment. [Figure 19] FIG. 19 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the eighth embodiment. [Figure 20] FIG. 20 is a cross-sectional view of an LED lighting device according to a modification of the eighth embodiment. [Figure 21] FIG. 21 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to the ninth embodiment. [Figure 22] FIG. 22 is a cross-sectional view of an LED lighting device according to a modification of the ninth embodiment. [Figure 23] FIG. 23 is a cross-sectional view of an LED lighting device according to the first modification. [Figure 24] FIG. 24 is a cross-sectional view of an LED lighting device according to the second modification. [Figure 25] FIG. 26 is a cross-sectional view of an LED lighting device according to the third modification. [Figure 26] FIG. 26 is a perspective view showing the configuration of a frame used in the LED lighting device according to the first to third modifications. [Figure 27] FIG. 27 is a cross-sectional view of an LED lighting device according to the fourth modification. [Figure 28] FIG. 28 is a cross-sectional view of an LED lighting device according to the fifth modification. [Figure 29] FIG. 29 is a cross-sectional view of an LED lighting device according to the sixth modification. 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. The numerical values, components, the arrangement and connection of the components, the steps and the order of the steps, etc. shown in the embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, any component that is not described in an independent claim that represents the highest concept of the present invention will be described as an optional component.

[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 1) First, the configuration of an LED lighting fixture 1 according to embodiment 1 will be described with reference to Figs. 1 to 3. Fig. 1 is a perspective view of the LED lighting fixture 1 according to embodiment 1. Fig. 2 is an exploded perspective view of the LED lighting fixture 1. Fig. 3 is a cross-sectional view of the LED lighting fixture 1. Fig. 3 shows a cross section of the LED lighting fixture 1 taken along a plane parallel to the short side direction of the LED lighting fixture 1.

[0015] An LED lighting fixture 1 according to this embodiment includes a fixture body 2 and an LED lighting device 3 attached to the fixture body 2, as shown in FIGS.

[0016] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is installed at a predetermined location in a building. The LED lighting fixture 1 in this embodiment is a ceiling-mounted lighting fixture. Therefore, the fixture body 2 is attached to the ceiling inside a room using bolts or the like.

[0017] In this embodiment, the fixture body 2 is made of sheet metal and is formed into a long, flat box shape in the Y-axis direction by bending the metal plate or the like. As shown in FIG. 2, the fixture body 2 is provided with a recess 2a having a rectangular opening. The recess 2a is provided elongated along the longitudinal direction of the fixture body 2. The recess 2a is a storage section for storing the LED lighting device 3 and is provided over substantially the entire length of the fixture body 2. Furthermore, as shown in FIGS. 2 and 3, on both sides of the recess 2a in the width direction of the fixture body 2, there are provided inclined surfaces 2b that extend from the opening edge of the recess 2a and slope upward (towards the ceiling) as they go outward.

[0018] The LED lighting device 3 is a light source unit that uses an LED as a light source. The LED lighting device 3 is detachably attached to the recess 2a of the fixture body 2. For example, the LED lighting device 3 can be attached to the recess 2a of the fixture body 2, or the LED lighting device 3 attached to the recess 2a of the fixture body 2 can be detached from the recess 2a. The LED lighting device 3 and the fixture body 2 can be fixed by hooking and engaging a hook metal fitting 5 and an elastic holding member 6 (a kick spring in this embodiment) provided on the LED lighting device 3 onto the fixture body 2.

[0019] As shown in FIG. 3, the LED lighting device 3 emits light using power supplied from a power supply device 4 housed in the fixture body 2. The power supply device 4 is an example of an electrical functional component, and supplies power to the LED lighting device 3. The power supply device 4 is disposed on the rear side of the LED lighting device 3. Specifically, the power supply device 4 is disposed in a recess 2a of the fixture body 2. In this embodiment, the power supply device 4 is attached to the LED lighting device 3 as a part of the LED lighting device 3, and is integrated with the LED lighting device 3. Note that the power supply device 4 is not necessarily integrated with the LED lighting device 3. The LED lighting device 3 may be disposed separately from the fixture body 2 instead of being disposed in the fixture body.

[0020] The power supply device 4 is configured with a power supply circuit that generates power for emitting light from the LED lighting device 3. For example, the power supply device 4 has a printed circuit board on which multiple electronic components are mounted and a circuit case that houses the printed circuit board. The power supply device 4 converts AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectifying, smoothing, and stepping down the power, and supplies the DC power to the LED lighting device 3.

[0021] AC power is supplied to the power supply device 4 via a power terminal block 8 (see FIG. 2) connected to a power line that is inserted from above the ceiling into a through-hole in the fixture body 2 and drawn out to the recess 2a of the fixture body 2. The power terminal block 8 is installed in the recess 2a of the fixture body 2.

[0022] Next, the detailed structure of the LED lighting device 3 will be described using Figs. 4 to 7 while referring to Figs. 1 to 3. Fig. 4 is a perspective view of the LED lighting device 3 according to embodiment 1 as seen from the cover member 30 side, and Fig. 5 is a perspective view of the LED lighting device 3 as seen from the back side. Fig. 6 is a cross-sectional perspective view of the LED lighting device 3. Fig. 7 is an exploded perspective view of the LED lighting device 3.

[0023] 2, 4, and 5, the LED lighting device 3 is a long linear light source called a light bar. The LED lighting device 3 emits light of a predetermined color, such as white light.

[0024] As shown in Figures 3, 6 and 7, the LED lighting device 3 includes a substrate 10, an LED 20 arranged on the substrate 10, a cover member 30 that covers the LED 20, a frame 40 that supports the substrate 10, and an end cap 50.

[0025] The substrate 10 is a mounting substrate for mounting the LEDs 20. In this embodiment, the substrate 10 is formed in a substantially rectangular shape that is elongated in the longitudinal direction (Y-axis direction) of the frame 40. The thickness of the substrate 10 is, for example, 1.0 mm. The length of the substrate 10 may be substantially the same as the overall length of the frame 40 in the longitudinal direction, or a plurality of substrates 10 may be arranged along the longitudinal direction of the frame 40. As shown in FIG. 7, in this embodiment, two substrates 10 are arranged along the longitudinal direction of the frame 40.

[0026] 6 and 7, the substrate 10 has a first surface 10a, which is one surface, and a second surface 10b, which is the other surface facing away from the first surface 10a. The first surface 10a of the substrate 10 is the front surface on which the LEDs 20 are mounted. On the other hand, the second surface 10b of the substrate 10 is the back surface facing the frame 40. In this embodiment, the second surface 10b of the substrate 10 is in contact with the frame 40.

[0027] The substrate 10 is, for example, a printed wiring board (printed circuit 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 10 so as to cover the wiring in order to protect the wiring and ensure a dielectric strength voltage. The substrate 10 may be a single-sided wiring board in which wiring is formed only on the first surface 10a on which the LEDs 20 are mounted, or may be a double-sided wiring board in which wiring is formed on both the first surface 10a and the second surface 10b.

[0028] The base material constituting the substrate 10 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 substrate made of a metal material such as aluminum or copper.

[0029] When the substrate 10 is made of a resin substrate, the resin substrate may be, for example, glass. Examples of substrates that can be used include glass epoxy substrates (CEM-3, FR-4, etc.) made of fiber and epoxy resin, paper phenol substrates (FR-1, FR-2) made of kraft paper or the like and phenol resin, paper epoxy substrates (FR-3) made of paper and epoxy resin, and polyimide substrates made of polyimide, etc. Furthermore, the substrate 10 may be a rigid substrate or a film-like flexible substrate.

[0030] 6 and 7, a plurality of LEDs 20 are mounted on the first surface 10a of the substrate 10. In this embodiment, the plurality of LEDs 20 are mounted in a linear row along the longitudinal direction (Y-axis direction) of the substrate 10 at predetermined intervals. Specifically, the plurality of LEDs 20 are mounted over substantially the entire length of the cover member 30 and the frame 40 in the longitudinal direction. Note that the plurality of LEDs 20 may be mounted in multiple rows along the longitudinal direction of the substrate 10 instead of in a single row.

[0031] The LED 20 is an example of a light-emitting element. In this embodiment, each of the multiple LEDs 20 is an individually packaged LED element (LED light source) with an SMD structure. In this case, each LED 20 includes a white container (package) made of resin or ceramic, an LED chip (bare chip) placed in the container, and a sealing member that seals the LED chip. In this embodiment, the LED 20 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 member filled in the container.

[0032] The LEDs 20 are covered with a cover member 30. Specifically, all of the LEDs 20 are covered with the cover member 30. The cover member 30 is an example of a light-transmitting cover that transmits light emitted from the LEDs 20. In this embodiment, the cover member 30 is a diffusion cover that not only transmits light but also diffuses light. Therefore, the light from the LEDs 20 that enters the cover member 30 is diffused (scattered) by the cover member 30 and passes through the cover member 30.

[0033] 3 and 6, the cover member 30 covers the substrate 10. Specifically, the cover member 30 is disposed opposite the first surface 10a of the substrate 10 so as to cover the plurality of LEDs 20.

[0034] In this embodiment, the cover member 30 covers the entire substrate 10 on which the LEDs 20 are arranged. As shown in Figures 5 and 6, the cover member 30 also covers the entire frame 40 on which the substrate 10 is arranged. Therefore, the cover member 30, like the substrate 10 and the frame 40, is formed in an elongated shape in the Y-axis direction.

[0035] The cover member 30 is attached to the frame 40. The cover member 30 and the frame 40 form a cylindrical body, and the substrate 10 and the plurality of LEDs 20 mounted on the substrate 10 are housed within this cylindrical body.

[0036] The cover member 30 is attached to the frame 40 so as to cover the substrate 10 and the LEDs 20. As shown in Figures 3 and 6, the cover member 30 has a cover main body 31, an attachment portion 32 connected to the cover main body 31, and an extension piece 33 connected to the attachment portion 32.

[0037] As shown in Fig. 7, the cover body 31 is elongated in the Y-axis direction and formed in a gutter shape. The cover body 31 has, for example, a flat, approximately semi-cylindrical shape. Therefore, the cover body 31 has an elongated rectangular opening end face extending in the Y-axis direction. Furthermore, the cross-sectional shape of the cover body 31 when cut along the X-axis direction is a curved, approximately arc-shaped curve. It has a shape.

[0038] As shown in FIGS. 3 and 6 , the cover body 31 includes protrusions 31a that protrude outward in the width direction of the cover body 31 from the mounting portion 32. The protrusions 31a are formed at both ends of the cover body 31 in the short-side direction (width direction). Each protrusion 31a has a recess 31a1 that is recessed on the side opposite the frame 40. If the recess 31a1 is formed, dead insects and foreign matter may accumulate in the recess 31a1, which may cause the short-side ends of the cover body 31 to become dull. Therefore, each protrusion 31a may not have a recess 31a1. In this case, for example, the XZ cross section of the protrusion 31a may be V-shaped, and the ceiling side of the protrusion 31a may be formed to be flush with the extension piece 33 via the mounting portion 32.

[0039] The mounting portion 32 is a portion that is attached to the frame 40. Specifically, the mounting portion 32 is attached to a side plate portion 42 of the frame 40. The mounting portion 32 is also an extension portion that extends from the cover main body portion 31 toward the frame 40.

[0040] A pair of mounting portions 32 are provided on the cover main body 31. Specifically, the mounting portions 32 are formed as a pair of legs that stand on both ends of the cover main body 31 in the short side direction (X-axis direction). Therefore, the pair of mounting portions 32 protrude from the cover main body 31 toward the ceiling. As shown in FIG. 7, each of the pair of mounting portions 32 is formed elongated along the Y-axis direction. The pair of mounting portions 32 have the same length in the Y-axis direction.

[0041] 3, 6, and 7, the amount of protrusion of at least a portion of one of the pair of mounting portions 32 is smaller than the amount of protrusion of the other of the pair of mounting portions 32. Specifically, the pair of mounting portions 32 is composed of a first mounting portion 321 and a second mounting portion 322 that are provided opposite each other in the X-axis direction, and the amount of protrusion of at least a portion of the first mounting portion 321 is smaller than the amount of protrusion of the second mounting portion 322.

[0042] In the present embodiment, the protrusion amount of the first mounting portion 321 (one mounting portion 32) and the protrusion amount of the second mounting portion 322 (the other mounting portion 32) are each constant over the entire longitudinal length of the cover member 30. In other words, over the entire longitudinal length of the cover member 30, the leg length (length in the Z-axis direction) of the first mounting portion 321 is shorter than the leg length (length in the Z-axis direction) of the second mounting portion 322.

[0043] 6 and 7, each of the pair of mounting portions 32 has a recess 32a into which the tip of the side plate portion 42 of the frame 40 is fitted. In the present embodiment, the recess 32a is provided at the tip of each of the pair of mounting portions 32. Specifically, the recess 32a is provided on the inner side of the tip of each of the pair of mounting portions 32 in the width direction (X-axis direction).

[0044] Bent portions 42a provided at the tip portions of the side plate portions 42 of the frame 40 are fitted into the recesses 32a, thereby engaging and fixing the pair of mounting portions 32 of the cover member 30 and the pair of side plate portions 42 of the frame 40 to each other. In the present embodiment, each of the pair of mounting portions 32 of the cover member 30 is located outside each of the pair of side plate portions 42 of the frame 40. Therefore, the pair of mounting portions 32 of the cover member 30 are fixed and held to the frame 40 in a manner that embraces the frame 40.

[0045] 3 and 6, the extension piece 33 is an extension portion that extends to reach the main plate portion 41 of the frame 40. Specifically, the extension piece 33 extends from the attachment portion 32 along the short-side direction (X-axis direction) of the cover member 30, and abuts against a step portion 41a of the main plate portion 41. Therefore, the extension piece 33 is located more inward than the mounting portion 32. Specifically, the extension piece 33 extends in a direction parallel to the first surface 10a and the second surface 10b of the substrate 10. As an example, the extension piece 33 is a plate-like piece formed with a constant thickness. Although a step portion is formed in the extension piece 33, the step portion does not have to be formed.

[0046] The extension piece 33 functions as a stopper that presses down the main plate portion 41 of the frame 40. In other words, the extension piece 33 prevents the frame 40 from shifting toward the light emission side (floor side) of the LEDs 20. In this embodiment, the extension piece 33 presses down the step portion 41a of the main plate portion 41 from the floor side (light emission side of the LEDs 20) toward the ceiling side, thereby preventing the frame 40 from shifting toward the floor side.

[0047] The extension piece 33 also has the function of preventing insects from entering the space between the cover body 31 of the cover member 30 and the main plate 41 of the frame 40. In other words, by providing the extension piece 33 so as to press down on the main plate 41, a maze structure can be formed in the path that insects can take when they enter through the gap between the mounting portion 32 of the cover member 30 and the side plate 42 of the frame 40, thereby preventing insects from entering the interior.

[0048] Further, the extension pieces 33 stand upright from each of the pair of mounting portions 32. That is, the cover member 30 has a pair of extension pieces 33. In this embodiment, the pair of extension pieces 33 have the same length in the X-axis direction. As shown in FIG. 7, each of the pair of extension pieces 33 is formed elongated along the Y-axis direction. The pair of extension pieces 33 also have the same length in the Y-axis direction. As an example, the pair of extension pieces 33 have the same shape, but are not limited to this. Furthermore, the pair of extension pieces 33 are provided at the same height in the Z-axis direction.

[0049] The cover member 30 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass. In this embodiment, the cover member 30 is made of a translucent resin material. In this case, the cover member 30 may be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 30 may be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflective fine particles such as silica particles may be used as the light diffusing material.

[0050] The cover member 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 cover member 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 cover member 30 may be configured to have light-diffusing properties by applying a surface treatment such as a texturing 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 cover member 30 is subjected to a diffusing treatment, it may further contain a light-diffusing material to enhance light-diffusing properties.

[0051] In this embodiment, the cover body 31, the attachment portion 32, and the extension piece 33 that constitute the cover member 30 are integrally formed. Therefore, the cover body 31, the attachment portion 32, and the extension piece 33 are made of the same material.

[0052] The frame 40 is a long support member (base member) that supports the substrate 10. The substrate 10 is attached to the frame 40. Specifically, the substrate 10 is supported by the frame 40 by placing the substrate 10 on the frame 40 and fixing the substrate 10 to the frame 40. In this embodiment, the frame 40 supports not only the substrate 10 but also the cover member 30. Specifically, the cover member 30 is fixed to the frame 40.

[0053] As an example, the frame 40 is a frame made of sheet metal. The frame 40 is formed into a predetermined shape by performing roll forming, press working, or the like on a sheet metal (metal plate) made of, for example, SPCC (Steel Plate Cold Commercial; cold-rolled steel plate). In this embodiment, the frame 40 is formed so that the cross section (XZ cross section) when cut along the X-axis direction is substantially U-shaped. Furthermore, like the substrate 10 and the device main body 2, the frame 40 is formed into an elongated shape in the Y-axis direction. The thickness of the metal plate constituting the frame 40 is, for example, 0.2 mm to 2 mm, and is 0.5 mm in this embodiment.

[0054] 3 to 7, the frame 40 has a plate-shaped main plate portion 41 and a pair of plate-shaped side plate portions 42. As shown in Fig. 7, the main plate portion 41 and the pair of side plate portions 42 are elongated and extend in the Y-axis direction.

[0055] The main plate portion 41 is the main body of the frame 40. A pair of step portions 41a are formed in the width direction (X-axis direction) along the longitudinal direction of the main plate portion 41. The step portions 41a are flat portions. Furthermore, by forming the pair of step portions 41a, a recessed portion 41b is formed in the main plate portion 41. The pair of step portions 41a and the recessed portion 41b are formed over the entire length of the main plate portion 41 in the longitudinal direction.

[0056] 3 and 6, the substrate 10 is attached to the main plate 41. Specifically, the substrate 10 is placed in the recess 41b of the main plate 41. In other words, the main plate 41 supports the substrate 10. In this embodiment, the substrate 10 and the main plate 41 are in contact with each other.

[0057] 7, main plate 41 has claws 43 formed by cutting and raising parts of sheet metal frame 40, and circuit board 10 placed on main plate 41 is fixed to main plate 41 by being locked by claws 43. Main plate 41 also has through holes through which conductive wires are inserted to electrically connect wiring on circuit board 10 to power supply 4.

[0058] The pair of side plates 42 constitute the side surfaces of the frame 40. The pair of side plates 42 protrude from both ends of the main plate 41 in the short direction (X-axis direction) toward the opposite side from the LED 20 (toward the ceiling). In other words, the pair of side plates 42 are formed as a pair of legs that stand on the main plate 41. For example, the pair of side plates 42 and the main plate 41 can be formed by bending a metal plate at approximately 90 degrees. As shown in FIG. 7, each of the pair of side plates 42 is formed elongated along the Y-axis direction. The pair of side plates 42 have the same length in the Y-axis direction.

[0059] 3, 6, and 7, the amount of protrusion of at least a portion of one of the pair of side plates 42 is smaller than the amount of protrusion of the other of the pair of side plates 42. Specifically, the pair of side plates 42 is composed of a first side plate 421 and a second side plate 422 that are provided opposite each other in the X-axis direction, and the amount of protrusion of at least a portion of the first side plate 421 is smaller than the amount of protrusion of the second side plate 422. In other words, one leg of the pair of side plates 42 that form the legs of the frame 40 is shorter.

[0060] In the present embodiment, the protrusion amount of the first side plate portion 421 (one side plate portion 42) and the protrusion amount of the second side plate portion 422 (the other side plate portion 42) are each constant over the entire longitudinal length of the frame 40. Therefore, the leg length (length in the Z-axis direction) of the first side plate portion 421, which has a portion with a small protrusion amount, is shorter than the leg length (length in the Z-axis direction) of the second side plate portion 422 over the entire longitudinal length of the frame 40.

[0061] The cover member 30 is attached to the pair of side plate portions 42. Specifically, the attachment portion 32 of the cover member 30 is attached to each of the pair of side plate portions 42. In this case, the first side plate portion 421 with a small protrusion amount is attached to the first attachment portion 321 with a small protrusion amount, and the second side plate portion 422 with a large protrusion amount is attached to the second attachment portion 322 with a large protrusion amount.

[0062] As shown in Figures 6 and 7, the tip of each side plate portion 42 is provided with a folded portion 42a that is curled outward, and the cover member 30 can be fixed to the frame 40 by snapping the folded portion 42a of the side plate portion 42 into and fitting it into the recess 32a provided in the mounting portion 32 of the cover member 30.

[0063] The frame 40 configured in this manner has a recess 44 surrounded by the main plate 41 and the pair of side plate portions 42. Components such as the power supply device 4, the hooking metal fitting 5, and the conductive wires are housed in the recess 44 of the frame 40. That is, the power supply device 4, the hooking metal fitting 5, and the conductive wires are housed in the recess 44 of the frame 40, and are also housed in the recess 2a of the fixture body 2. A function expansion module may also be housed in the recess 44 of the frame 40. The function expansion module is, for example, a variety of sensors such as a motion sensor or a brightness sensor, a receiving unit (light receiving unit) such as a wireless receiving unit for receiving wireless dimming signals or an infrared receiving unit for receiving infrared remote control signals, or a functional component such as a display monitor.

[0064] 3, the power supply device 4 housed in the recess 44 of the frame 40 is disposed on the side of the main plate 41 of the frame 40 opposite the side on which the board 10 is disposed. In this embodiment, the power supply device 4 is disposed closer to the second side plate 422. In other words, the power supply device 4 is disposed closer to the second side plate 422, which protrudes more than the first side plate 421 or the second side plate 422.

[0065] A long cylindrical body is formed by fixing the cover member 30 and the frame 40. An end cap 50 is attached to each of both ends in the longitudinal direction of the cylindrical body formed by the cover member 30 and the frame 40.

[0066] In this embodiment, the end cap 50 is provided to close the open end of the cylindrical body formed by the cover member 30 and the frame 40. In other words, the end cap 50 is attached to the cylindrical body so as to cover the open end of the cylindrical body formed by the cover member 30 and the frame 40, closing the open end of the cylindrical body. This makes it possible to prevent dust, insects, etc. from entering the inside of the cylindrical body formed by the cover member 30 and the frame 40. Note that the end cap 50 may not completely close the open end of the cylindrical body formed by the cover member 30 and the frame 40, and there may be a small gap between the end cap 50 and the frame 40.

[0067] The end caps 50 are provided at both longitudinal ends of the cover member 30. In other words, the end caps 50 are cover ends provided at the ends of the cover member 30. The end caps 50 are directly or indirectly connected to the longitudinal ends of the cover member 30. For example, the end caps 50 and the cover member 30 are fixed together with an adhesive.

[0068] The end cap 50 is made of a resin material. The end cap 50 may or may not be translucent. A translucent end cap 50 is made of a transparent resin material such as polycarbonate or acrylic. The end cap 50 may be translucent and diffusive. In this case, the end cap 50 may be made of the same material as the cover member 30, or may be made of a different material from the cover member 30.

[0069] The LED lighting device 3 configured in this manner is housed in the recess 2a of the fixture body 2 and attached to the fixture body 2. Specifically, the LED lighting device 3 is attached to the fixture body 2 using a hook 5 and an elastic holding member 6 shown in Figures 4 and 5. The hook 5 and the elastic holding member 6 are fixed to a frame 40.

[0070] The hook fitting 5 is a plate member made of sheet metal. The hook fitting 5 is fixed to one end of the frame 40 in the short direction. In this embodiment, the hook fitting 5 is provided on the part of the frame 40 on the second side plate portion 422 side. As an example, the hook fitting 5 is fixed to the main plate portion 41 with a fixing member such as a screw, and extends so as to protrude outward from the second side plate portion 422 of the frame 40. The hook fitting 5 is hooked onto the fixture main body 2. In this embodiment, a slit 2c is provided on the inner wall surface of the recess 2a of the fixture main body 2, and the hook fitting 5 is hooked onto this slit 2c.

[0071] The elastic holding member 6 is a spring such as a kick spring. The elastic holding member 6 is fixed to the other end of the frame 40 in the short direction. In other words, the elastic holding member 6 is fixed to the opposite side of the frame 40 from the hook fitting 5 in the width direction of the frame 40. In this embodiment, the elastic holding member 6 is provided on a portion of the frame 40 on the first side plate portion 421 side. As an example, the elastic holding member 6 is fixed to the frame 40 by a fixing fitting or the like fixed to the frame 40. The elastic holding member 6 is detachably attached to the appliance main body 2. Specifically, the elastic holding member 6 is detachably engaged with a receiving fitting 7 fixed to the appliance main body 2.

[0072] Although two each of the hooking fittings 5 ​​and the elastic holding members 6 are provided, this is not limiting. Furthermore, the hooking fittings 5 ​​and the elastic holding members 6 are provided at positions facing each other in the short-side direction of the frame 40, this is not limiting.

[0073] Here, a method for attaching the LED lighting device 3 to the fixture body 2 will be described with reference to Fig. 8. Fig. 8 is a diagram for explaining a method for attaching the LED lighting device 3 to the fixture body 2 in the LED lighting fixture 1 according to embodiment 1.

[0074] When attaching the LED lighting device 3 to the fixture body 2 installed on the ceiling 100, first, as shown in (a) of Figure 8, the LED lighting device 3 is suspended in a cantilevered state by hooking the hooking bracket 5 into the slit 2c (see Figure 2) provided in the fixture body 2, and one end of the elastic holding member 6, which is a kick spring, is engaged with the receiving bracket 7 fixed to the fixture body 2.

[0075] 8(b), the LED lighting device 3 is rotated around the hook 5 as a fulcrum while the hook 5 is pushed deep into the slit 2c, thereby pushing the LED lighting device 3 up into the recess 2a of the fixture body 2. In this embodiment, the hook 5 is disposed on the second side plate 422 side of the frame 40 (the side of the side plate 42 with the greater protrusion), so that the second side plate 422 side of the LED lighting device 3 becomes the rotation axis side in the short direction (X-axis direction) of the frame 40. When the LED lighting device 3 is rotated, the rotation axis is parallel to the longitudinal direction (Y-axis direction) of the LED lighting device 3.

[0076] Then, by rotating the LED illumination device 3 so that the second side plate portion 422 faces the rotation axis and pushing the LED illumination device 3 into the recess 2a of the fixture body 2, the LED illumination device 3 can be fitted into the recess 2a of the fixture body 2, as shown in (c) of Figure 8. In this way, the LED illumination device 3 can be attached to the fixture body 2.

[0077] As described above, in the LED lighting device 3 and the LED lighting fixture 1 according to this embodiment, the frame 40 has a long main plate portion 41 to which the substrate 10 is attached, and a pair of side plate portions 42 that protrude from both ends of the main plate portion 41 in the short direction toward the opposite side from the LEDs 20, and the protrusion amount of at least a portion of one of the pair of side plate portions 42 is smaller than the protrusion amount of the other of the pair of side plate portions 42. Specifically, the protrusion amount of at least a portion of the first side plate portion 421 is smaller than the protrusion amount of the second side plate portion 422.

[0078] With this configuration, the space in the recess 44 of the frame 40 can be increased by the amount that the protrusion amount of one of the pair of side plates 42 is reduced, so that components such as the power supply device 4, mounting members such as the metal hooks 5 and elastic holding members 6, and / or function expansion modules such as sensor units can be easily stored in the recess 44 of the frame 40. Furthermore, by reducing the protrusion amount of one of the pair of side plates 42, it is possible to prevent a decrease in the strength of the frame 40 compared to when the protrusion amounts of both of the pair of side plates 42 are reduced.

[0079] Therefore, with the LED lighting device 3 and the LED lighting fixture 1 according to this embodiment, it is possible to ensure the strength of the frame 40 while also ensuring the space for the recess 44 of the frame 40.

[0080] Furthermore, in the LED lighting device 3 of this embodiment, the amount of protrusion of the first side plate portion 421 is smaller than the amount of protrusion of the second side plate portion 422 over the entire length of the frame 40 in the longitudinal direction.

[0081] This configuration ensures that the space for the recess 44 of the frame 40 is sufficient over the entire length of the frame 40 in the longitudinal direction.

[0082] In addition, in this embodiment, the cover member 30 has a cover main body portion 31 and a pair of mounting portions 32 extending from the cover main body portion 31 toward the frame 40 and attached to the frame 40, and each of the pair of mounting portions 32 is located outside each of a pair of side plate portions 42 on the frame 40.

[0083] With this configuration, the cover member 30 is attached to the frame 40 so as to embrace the frame 40. This makes it difficult for the cover member 30 to come off the frame 40, and also improves the strength of the LED lighting device 3.

[0084] In this case, in this embodiment, the attachment portion 32 of the cover member 30 has a recess 32a into which the tip end of the side plate portion 42 of the frame 40 is fitted.

[0085] With this configuration, the cover member 30 and the frame 40 can be engaged and fixed together without using any additional fixing members such as screws. This allows the cover member 30 and the frame 40 to be easily assembled, and the number of parts can be reduced. In this embodiment, the recess 32a of the cover member 30 is provided at the tip of the attachment portion 32.

[0086] 8, in the LED lighting fixture 1 according to this embodiment, the LED lighting device 3 is attached to the fixture body 2 by rotating the frame 40 so that the side plate 42 (second side plate 422) that protrudes the most out of the pair of side plate portions 42 is on the rotation axis side. Specifically, a hook 5 is provided on the second side plate 422 side, which is on the rotation axis side.

[0087] This configuration allows the LED lighting device 3 to be easily attached to the fixture body 2. This point will be explained using Fig. 9 together with Fig. 8. Fig. 9 is a diagram for explaining a method for attaching an LED lighting device 3X to the fixture body 2 in an LED lighting fixture 1X of the comparative example.

[0088] As shown in FIG. 9(a), in the LED lighting device 3X of the comparative example, the pair of mounting portions 32X of the cover member 30X are the same length, and the pair of side plate portions 42X of the frame 40X are the same length. Therefore, when the hooking metal fitting 5 is hooked to a slit formed in the fixture body 2 and the LED lighting device 3X is rotated around the hooking metal fitting 5 as in the present embodiment, if the hooking metal fitting 5 is not pushed sufficiently into the slit 2c, the mounting portion 32X of the cover member 30X may hit and get caught on a part of the fixture body 2, preventing the LED lighting device 3X from being smoothly attached to the recess 2a of the fixture body 2, as shown in FIG. 9(b). Even if the LED lighting device 3X can be attached, the LED lighting device 3X or the fixture body 2 may be damaged because the LED lighting device 3X hits the fixture body 2.

[0089] In contrast, in the LED lighting fixture 1 according to this embodiment, when the LED lighting device 3 is rotated to be attached to the fixture body 2, the side plate 42 (second side plate 422) of the pair of side plate portions 42 of the frame 40 that protrudes more is positioned on the rotation axis side. Therefore, as shown in FIG. 8(b), when the LED lighting device 3 is rotated, the side plate 42 (first side plate 421) of the pair of side plate portions 42 of the frame 40 that protrudes less and the mounting portion 32 (first mounting portion 321) of the pair of mounting portions 32 of the cover member 30 that protrudes less are positioned closer to the fixture body 2. This prevents the first mounting portion 321 of the cover member 30 from hitting the fixture body 2 and scratching an unintended location. This means that the LED lighting device 3 can be easily attached to the fixture body 2. This means that the installation of the LED lighting fixture 1 can be improved.

[0090] Furthermore, by positioning the side plate 42 (second side plate 422) of the pair of side plate portions 42 of the frame 40 that protrudes more toward the rotation axis, when the LED illumination device 3 is rotated and attached to the fixture body 2, it is possible to prevent conductive wires such as the power supply wire routed through the recess 44 of the frame 40 from being pinched between a part of the LED illumination device 3 (for example, the mounting portion 32 of the cover member 30) and the fixture body 2. In other words, it is possible to prevent the conductive wires from getting caught.

[0091] Furthermore, when the LED lighting device 3 is rotated and attached to the fixture body 2 as in this embodiment, the power supply device 4 is preferably disposed closer to the side plate portion 42 (the second side plate portion 422 side) that protrudes more than the other of the pair of side plate portions 42. In other words, the power supply device 4 is preferably disposed closer to the rotation axis.

[0092] In this way, by arranging the heavy power supply device 4 closer to the side plate portion 42 with the larger protrusion (the rotation axis side), the LED lighting device 3 can be rotated with less force than when the power supply device 4 is arranged closer to the side plate portion 42 with the smaller protrusion (the first side plate portion 421). This makes it easier to attach the LED lighting device 3 to the fixture body 2. Note that components that are taller than the length of the legs of the side plate portion 42 of the frame 40, such as the hook 5 or a function expansion module, can also be arranged closer to the side plate portion 42 with the larger protrusion, just like the power supply device 4. In this case, the LED lighting device 3 can also be attached to the fixture body 2 with ease.

[0093] In this embodiment, the amount of protrusion of the first side plate portion 421 and the amount of protrusion of the second side plate portion 422 are each constant over the entire longitudinal length of the frame 40, and the length of the leg of the first side plate portion 421 having a portion with a small amount of protrusion is shorter than the length of the leg of the second side plate portion 422 over the entire longitudinal length of the frame 40, but this is not limited to this.

[0094] For example, the first side plate 421 may have a portion with a smaller protrusion in the longitudinal direction of the frame 40. That is, one leg of the pair of side plate portions 42 constituting the legs of the frame 40 may be partially shortened. Specifically, as in an LED lighting device 3A shown in FIG. 10(a), one of the pair of side plate portions 42A of the frame 40A (e.g., the first side plate portion 421) may have a notch 42b formed therein so as to reduce the protrusion in that portion. For example, as shown in FIG. 10(b), the notch 42b is formed in a portion corresponding to a section L1 from a through hole 2d provided at the bottom of the recess 2a of the fixture body 2 to the power terminal block 8. The through hole 2d is a power insertion hole through which a power line 9 (such as a VVF cable) connected to an external power source (commercial AC power source) is inserted. That is, the notch 42b is formed in a recess 44 of the frame 40A at a position corresponding to the position through which the power line 9 passes. The power supply wire 9 is inserted from above the ceiling through the through-hole 2d of the fixture body 2, drawn to the inside of the frame 40A, and connected to the power supply terminal block 8. Because the power supply wire 9 is a relatively thick conductive wire, it is difficult to route the power supply wire 9 if the space in the recess of the frame is narrow. However, as in the LED lighting device 3A shown in Fig. 10, by forming a notch 42b in the first side plate portion 421 at a position corresponding to the power supply wire 9, it is possible to easily ensure a space in the recess 44 of the frame 40A sufficient for routing the power supply wire 9.

[0095] 11(a), not only the first side plate 421 but also the second side plate 422 may have a portion with a small protrusion. That is, both of the pair of side plates 42B constituting the legs of the frame 40B may have a partially shortened leg. In this case, the first side plate 421 may have a notch 42b (first notch) in the longitudinal direction of the frame 40B corresponding to the position where the feeding wiring 9B passes so that the protrusion is partially reduced. Similarly, the second side plate 422 may have a notch 42b (second notch) in the longitudinal direction of the frame 40B corresponding to the position where the feeding wiring 9B passes so that the protrusion is partially reduced. 11(b), the feed wiring 9B is a power line for supplying AC power from one of two adjacent LED lighting devices 3B to the other LED lighting device 3B when two or more LED lighting devices are connected together, and is routed so as to travel between both ends in the width direction of the recessed portion 2a of the fixture body 2. For example, as shown in FIG. 11(b), the feed wiring 9B is routed through sections L2, L3, and L4 in the recessed portion 2a of the fixture body 2. Section L3 is located at a position corresponding to the end of the recessed portion 2a of the fixture body 2 on the first side plate portion 421 side, and sections L2 and L4 are located at positions corresponding to the end of the recessed portion 2a of the fixture body 2 on the second side plate portion 422 side. Therefore, the cutout 42b (first cutout) of the first side plate 421 is formed at a position corresponding to section L3, and the cutout 42b (second cutout) of the second side plate 422 is formed at a position corresponding to section L2 and section L4. Because the feeding wiring 9B is a relatively thick conductive wire, it is difficult to route the feeding wiring 9B if the space in the recess of the frame is narrow. However, as in the LED lighting device 3B shown in Fig. 11, by forming the cutouts 42b in the first side plate 421 and the second side plate 422 at positions corresponding to the feeding wiring 9B, it is possible to easily ensure a space in the recess 44 of the frame 40B sufficient for routing the feeding wiring 9B.

[0096] (Embodiment 2) Next, the second embodiment will be described with reference to Fig. 12. Fig. 12 is a cross-sectional view of an LED lighting device 3C used in an LED lighting fixture according to the second embodiment.

[0097] The LED lighting device 3C according to this embodiment differs from the LED lighting device 3 according to the above-mentioned embodiment 1 in the configuration of the cover member 30C. Specifically, in the LED lighting device 3 according to the above-mentioned embodiment 1, the first mounting portion 321 of the cover member 30 has a small protrusion amount, similar to the first side plate portion 421 of the frame 40. However, in the LED lighting device 3C according to this embodiment, the first mounting portion 321 does not have a small protrusion amount, and has the same protrusion amount as the second mounting portion 322.

[0098] Therefore, in the LED lighting device 3 according to the first embodiment, the recess 32a (the portion into which the tip of the side plate portion 42 of the frame 40 is fitted) of the mounting portion 32 of the cover member 30 is provided at the tip of the mounting portion 32. However, in the LED lighting device 3C according to the present embodiment, the recess 32a of the mounting portion 32C (first mounting portion 321) with the smaller protrusion amount is provided midway in the extending direction of the mounting portion 32C. Specifically, the first mounting portion 321 of the cover member 30C in the present embodiment has an extending portion 32b that protrudes further from the recess 32a relative to the first mounting portion 321 of the cover member 30 in the above embodiment. In other words, in the present embodiment, the length of the leg of the first mounting portion 321 is extended without changing the position of the recess 32a compared to the first embodiment. Specifically, the protrusion amount of one mounting portion 32C (first mounting portion 321) of the cover member 30C is not reduced, and the protrusion amounts of the pair of mounting portions 32C are the same.

[0099] Except for the cover member 30C, the LED illumination device 3C according to this embodiment has the same configuration as the LED illumination device 3 according to the above embodiment.

[0100] Therefore, in the LED lighting device 3C according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42 in the frame 40 is smaller than the protrusion amount of the other of the pair of side plate portions 42.

[0101] This configuration ensures the strength of the frame 40 while also ensuring the space for the recess 44 of the frame 40.

[0102] In addition, in the LED lighting device 3C of this embodiment, the recess 32a of the first mounting portion 321 of the cover member 30C, which is attached to the first side plate portion 421 having a small protrusion amount on the frame 40, is provided midway in the extension direction of the first mounting portion 321, and the first mounting portion 321 is provided with an extension portion 32b.

[0103] This configuration makes it possible to make it difficult to see inside the LED lighting fixture when the LED lighting device 3C is attached to the fixture body 2. This point will be described below.

[0104] If the protrusion amount of one of the side plate portions 42 (first side plate portion 421) of the frame 40 is reduced as in the first embodiment, and the protrusion amount of one of the mounting portions 32 (first mounting portion 321) of the cover member 30 is also reduced accordingly, when the LED lighting device 3 is attached to the recess 2a of the fixture body 2 installed on the ceiling, a gap may be generated at the boundary between the fixture body 2 and the cover member 30 on the side of the first side plate portion 421 with the reduced protrusion amount. Therefore, when a user looks up at the LED lighting fixture 1 from the side of the first side plate portion 421 with the reduced protrusion amount, the interior of the LED lighting fixture 1 may be visible, which may degrade the design.

[0105] In contrast to this, in the present embodiment, the protrusion amount of one side plate portion 42 (first side plate portion 421) of the frame 40 is reduced, while the leg length of one mounting portion 32C (first mounting portion 321) of the cover member 30C is extended. This makes it possible to prevent a gap from occurring at the boundary between the fixture body 2 and the cover member 30C when the LED lighting device 3C is attached to the recess 2a of the fixture body 2. Therefore, it is possible to prevent a decrease in the design of the LED lighting fixture 1 while ensuring space for the recess 44 of the frame 40.

[0106] (Embodiment 3) Next, a third embodiment will be described with reference to Fig. 13. Fig. 13 is a cross-sectional view of an LED lighting device 3D used in an LED lighting fixture according to the third embodiment.

[0107] The LED lighting device 3D according to the present embodiment differs from the LED lighting device 3 according to the above-described embodiment 1 in the configuration of the frame 40D. Specifically, in the above-described embodiment 1, the depth of the recess 41b of the main plate 41 of the frame 40 is approximately the same as the thickness of the substrate 10 placed in the recess 41b. However, in the present embodiment, the depth of the recess 41b of the main plate 41D of the frame 40D is greater than at least the total length of the thickness of the substrate 10 and the height of the LED 20. Therefore, the light-emitting surface of the LED 20 is located closer to the ceiling (lower side in FIG. 13 ) than the surface of the step portion 41a of the main plate 41D of the frame 40D. In other words, the light-emitting surface of the LED 20 is located at a position set back from the surface of the step portion 41a of the main plate 41D.

[0108] In the LED lighting device 3D according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42 in the frame 40D is smaller than the protrusion amount of the other of the pair of side plate portions 42.

[0109] This configuration ensures the strength of the frame 40D and also ensures the space for the recess 44 of the frame 40D.

[0110] In this embodiment, the recess 41b of the main plate 41D of the frame 40D is deep, and the light emitting surface of the LED 20 is located at a position set back from the surface of the step 41a of the main plate 41D.

[0111] This configuration can prevent light emitted from the LEDs 20 from reaching the extension pieces 33 of the cover member 30 that abut against the step portion 41a. As a result, the light from the LEDs 20 is not blocked by the extension pieces 33, which can prevent a difference in brightness from occurring on the light-emitting surface at the end in the lateral direction of the cover member 30. Therefore, the end in the lateral direction (X-axis direction) of the LED lighting device 3D can be illuminated clearly.

[0112] Furthermore, since the light from the LEDs 20 does not reach the extension piece 33, the light from the LEDs 20 does not enter the extension piece 33. This prevents the light from the LEDs 20 from being guided through the extension piece 33 and the mounting portion 32 and leaking from the end of the mounting portion 32, etc. Therefore, it is possible to obtain a desired light distribution and a desired lighting atmosphere.

[0113] (Fourth embodiment) Next, a fourth embodiment will be described with reference to Fig. 14. Fig. 14 is a cross-sectional view of an LED lighting device 3E used in an LED lighting fixture according to the fourth embodiment.

[0114] The LED lighting device 3E according to this embodiment is different from the LED lighting device 3 according to the above-mentioned embodiment 1 in the configuration of the frame 40E. Specifically, in the above-mentioned embodiment 1, the recess 41b is formed in the main plate portion 41 of the frame 40, but in this embodiment, the recess 41b is not formed in the main plate portion 41E of the frame 40E. Therefore, the main plate portion 41E is a flat plate.

[0115] In the LED lighting device 3E according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42 in the frame 40E is smaller than the protrusion amount of the other of the pair of side plate portions 42.

[0116] This configuration ensures the strength of the frame 40E and also ensures the space for the recess 44 of the frame 40E.

[0117] In addition, in this embodiment, the recessed portion 41b is not formed in the main plate portion 41E of the frame 40E, and the shape of the frame 40E is simplified.

[0118] With this configuration, frame 40E can be manufactured more easily than frame 40 in the first embodiment.

[0119] (Embodiment 5) Next, the fifth embodiment will be described with reference to Fig. 15. Fig. 15 is a cross-sectional view of an LED lighting device 3F used in an LED lighting fixture according to the fifth embodiment.

[0120] An LED lighting device 3F according to this embodiment differs from the LED lighting device 3 according to the first embodiment in the configurations of a cover member 30F and a frame 40F.

[0121] Specifically, in this embodiment, the main board 41F of the frame 40F has a recessed portion 41c. The recessed portion 41c has a concave shape on the surface of the main board 41F facing the light-emitting surface of the LED 20. Specifically, the recessed portion 41c is formed by recessing a portion of the main board 41F toward the ceiling. In this case, the recessed portion 41c can be formed, for example, by pressing a portion of the main board 41F so that it recesses toward the ceiling. Therefore, the thickness of the bottom of the recessed portion 41c is the same as the thickness of the portion of the main board 41F where the recessed portion 41c is not formed.

[0122] The recessed portions 41c are provided at the ends of the main plate portion 41F in the short-side direction (X-axis direction). In this embodiment, the recessed portions 41c are provided at both ends of the main plate portion 41F in the short-side direction. Specifically, each recessed portion 41c is formed at the connection portion between the main plate portion 41F and the side plate portion 42 so as to eliminate corners between the main plate portion 41F and the side plate portion 42. The recessed portions 41c are provided along the longitudinal direction (Y-axis direction) of the main plate portion 41F. In this embodiment, the recessed portions 41c are provided over the entire length of the main plate portion 41F in the long-side direction.

[0123] In the present embodiment, the extension piece 33F of the cover member 30F is located in the recessed portion 41c of the frame 40F. Specifically, the extension piece 33F extends from the attachment portion 32 of the cover member 30F along the short-side direction (X-axis direction) of the cover member 30F.

[0124] Further, the extension piece 33F is housed within the recessed portion 41c so as not to protrude from the recessed portion 41c. In other words, the extension piece 33F is located at a position set back from the light-emitting surface of the LED 20 and does not protrude beyond the light-emitting surface of the LED 20 toward the floor. Therefore, unlike the extension piece 33 of the first embodiment, the extension piece 33F of the present embodiment does not have a step portion and is flat.

[0125] In the LED lighting device 3F according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42 in the frame 40F is smaller than the protrusion amount of the other of the pair of side plate portions 42.

[0126] This configuration ensures the strength of the frame 40F while also ensuring the space for the recess 44 of the frame 40F.

[0127] Furthermore, in the LED lighting device 3F according to this embodiment, a recessed portion 41c is provided in the main plate portion 41F of the frame 40F, and the extension piece 33F of the cover member 30F is located in the recessed portion 41c.

[0128] This configuration can prevent the light emitted from the LED 20 from reaching the extension piece 33F. As a result, the light from the LED 20 is not blocked by the extension piece 33F, and therefore, it is possible to prevent a difference in brightness from occurring on the light-emitting surface at the end of the cover member 30F in the short side direction. Therefore, the ends of the LED lighting device 3F in the short side direction (X-axis direction) can be made to shine clearly.

[0129] Furthermore, since the light from the LEDs 20 does not reach the extension piece 33F, the light from the LEDs 20 does not enter the extension piece 33F. This prevents the light from the LEDs 20 from being guided through the extension piece 33F and the mounting portion 32 and leaking from the end of the mounting portion 32, etc. Therefore, a desired light distribution and a desired lighting atmosphere can be obtained.

[0130] (Embodiment 6) Next, a sixth embodiment will be described with reference to Fig. 16. Fig. 16 is a cross-sectional view of an LED lighting device 3G used in an LED lighting fixture according to the sixth embodiment.

[0131] The LED lighting device 3G according to this embodiment differs from the LED lighting device 3 according to the above-mentioned embodiment 1 in the configuration of the frame 40G. Specifically, in the above-mentioned embodiment 1, the frame 40 is composed of one component, but in this embodiment, the frame 40G is composed of two components, a first frame member 40a and a second frame member 40b.

[0132] The first frame member 40a has one of the two step portions 41a of the main plate portion 41 and one of the pair of side plate portions 42 (first side plate portion 421). In other words, the first frame member 40a has the first side plate portion 421 with a small protrusion amount.

[0133] The second frame member 40b has a portion of the main plate portion 41 where the recess 41b is formed, two step portions 41a, and the other side plate portion 42 (second side plate portion 422) of the pair of side plate portions 42. In other words, the second frame member 40b has the second side plate portion 422 with a large protruding amount.

[0134] The first frame member 40a and the second frame member 40b formed in this manner are joined by overlapping the step portions 41a. The first frame member 40a and the second frame member 40b are joined by, for example, welding or screws.

[0135] In the LED lighting device 3G according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42 in the frame 40G is smaller than the protrusion amount of the other of the pair of side plate portions 42.

[0136] This configuration ensures the strength of the frame 40G and also ensures the space for the recess 44 of the frame 40G.

[0137] In this embodiment, the frame 40G is made up of two parts: a first frame member 40a and a second frame member 40b. Specifically, the first frame member 40a has a first side plate portion 421, and the second frame member 40b has a second side plate portion 422.

[0138] This configuration makes it possible to easily form the first side plate portion 421 with a small protrusion amount on the frame 40G.

[0139] (Embodiment 7) Next, the seventh embodiment will be described with reference to Fig. 17. Fig. 17 is a cross-sectional view of an LED lighting device 3H used in an LED lighting fixture according to the seventh embodiment.

[0140] The LED lighting device 3H according to this embodiment is the same as the LED lighting device 3 according to the first embodiment. The configuration of frame 40H is different from that of embodiment 1. Specifically, in the first embodiment, main plate 41 of frame 40 is provided with stepped portion 41a, which is a flat portion, and recessed portion 41b. In contrast, in the present embodiment, main plate 41H of frame 40H is provided with recessed portion 41b on which substrate 10 is placed, but is not provided with stepped portion 41a, which is a flat portion. For this reason, the shape of the XZ cross section of frame 40H is approximately M-shaped.

[0141] In the LED lighting device 3H according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42 in the frame 40H is smaller than the protrusion amount of the other of the pair of side plate portions 42.

[0142] This configuration ensures the strength of the frame 40H and also ensures the space for the recess 44 of the frame 40H.

[0143] Furthermore, by making the XZ cross section of the frame 40H approximately M-shaped as in the LED lighting device 3H according to this embodiment, the strength of the frame 40H can be increased, a larger space can be secured for arranging the power supply device 4, and luminous flux loss in downward light distribution can be reduced.

[0144] As in an LED lighting device 3I shown in FIG. 18, the depth of the recess 41b of the main plate portion 41I of the frame 40I may be made even deeper.

[0145] (Embodiment 8) Next, the eighth embodiment will be described with reference to Fig. 19. Fig. 19 is a cross-sectional view of an LED lighting device 3J used in an LED lighting fixture according to the eighth embodiment.

[0146] The LED lighting device 3J according to this embodiment differs from the LED lighting device 3 according to the first embodiment in the configurations of a cover member 30J and a frame 40J.

[0147] Specifically, in the present embodiment, the pair of side plate portions 42J of the frame 40J are inclined in directions approaching each other as they move away from the main plate portion 41. Similarly, the pair of mounting portions 32J of the cover member 30J attached to the frame 40J are also inclined in directions approaching each other in accordance with the inclination of the pair of side plate portions 42J of the frame 40J.

[0148] In the LED lighting device 3J according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42J in the frame 40J is smaller than the protrusion amount of the other of the pair of side plate portions 42J.

[0149] This configuration ensures the strength of the frame 40J while also ensuring the space for the recess 44 of the frame 40J.

[0150] In the LED lighting device 3J of this embodiment, the pair of side plate portions 42J of the frame 40J are inclined in directions approaching each other as they move away from the main plate portion 41. In addition, the pair of mounting portions 32J of the cover member 30J are also inclined in directions approaching each other.

[0151] This configuration prevents the cover member 30J or part of the frame 40J from hitting the fixture body 2 and causing damage to unintended locations when the LED lighting device 3J is fitted into the recess 2a of the fixture body 2 installed on the ceiling.

[0152] In this case, as in the first embodiment, the side plate 42J side (second side plate 422 side) of the pair of side plate portions 42J of the frame 40J having the larger protruding amount is located on the rotation shaft side. This further prevents the cover member 30J or part of the frame 40J from hitting the fixture body 2 and causing damage to unintended locations. In other words, by inclining the pair of side plate portions 42J and the pair of mounting portions 32J toward the inside, the ease of installation of the LED lighting fixture can be further improved.

[0153] As in an LED lighting device 3K shown in FIG. 20, the substrate 10 may be placed on a main plate portion 41K of a frame 40K without forming a recess 41b in the main plate portion 41K.

[0154] (Embodiment 9) Next, the ninth embodiment will be described with reference to Fig. 21. Fig. 21 is a cross-sectional view of an LED lighting device 3L used in an LED lighting fixture according to the ninth embodiment.

[0155] An LED lighting device 3L according to this embodiment differs from the LED lighting device 3 according to the first embodiment in the configurations of a cover member 30L and a frame 40L.

[0156] Specifically, in the present embodiment, the pair of side plate portions 42L of the frame 40L are inclined in directions that move away from each other as they become farther from the main plate portion 41. Similarly, the pair of mounting portions 32L of the cover member 30L attached to the frame 40L are also inclined in directions that move away from each other in accordance with the inclination of the pair of side plate portions 42L of the frame 40L. In other words, the pair of side plate portions 42L and the pair of mounting portions 32L in the present embodiment are inclined in the opposite direction to the pair of side plate portions 42J and the pair of mounting portions 32J in the eighth embodiment.

[0157] In the LED lighting device 3L according to this embodiment, the protrusion amount of at least a portion of one of the pair of side plate portions 42L in the frame 40L is smaller than the protrusion amount of the other of the pair of side plate portions 42L.

[0158] This configuration ensures the strength of the frame 40L and also ensures the space for the recess 44 of the frame 40L.

[0159] In the LED lighting device 3L of this embodiment, the pair of side plate portions 42L of the frame 40L are inclined in directions that move away from each other as they become farther from the main plate portion 41. In addition, the pair of mounting portions 32L of the cover member 30L are also inclined in directions that move away from each other.

[0160] This configuration can improve the design of the LED lighting device 3 and the design of an LED lighting fixture including this LED lighting device 3.

[0161] As in an LED lighting device 3M shown in FIG. 22, the substrate 10 may be placed on a main plate portion 41M of a frame 40M without forming a recess 41b in the main plate portion 41M.

[0162] (Other variations) The LED lighting fixture and LED lighting device according to the present invention have been described above based on the first to ninth embodiments, but the present invention is not limited to these first to ninth embodiments.

[0163] For example, in the above-mentioned first embodiment and the like, the entire substrate 10 is in contact with the metal portion of the main plate portion 41 of the frame 40, but this is not limiting. Specifically, as shown in an LED lighting device 3N shown in FIG. 23, an opening 41e may be formed in the main plate portion 41N of the frame 40N, and a part of the second surface 10b of the substrate 10 may be exposed through the opening 41e of the frame 40N. In this case, instead of contacting the second surface 10b of the substrate 10 with the outer surface of the main plate portion 41N of the frame 40N, the first surface 10a of the substrate 10 may be in contact with the inner surface of the main plate portion 41N of the frame 40N, as in an LED lighting device 3O shown in FIG. 24. Therefore, the substrate 10 may be disposed inside the frame 40N instead of outside. Furthermore, when the substrate 10 is disposed inside the frame 40N, a support member 60 for supporting the substrate 10 may be disposed separately, as in the LED lighting device 3P shown in FIG. 25. Note that the frame 40N having the main plate portion 41N with the openings 41e formed therein may have the configuration shown in FIG. 26. In the frame 40N shown in FIG. 26, three openings 41e are formed in the main plate portion 41N, but this is not limiting. Furthermore, the frame 40N may be formed of two separate parts, left and right.

[0164] 27, the frame 40Q may further include a support member 45 for supporting the substrate 10. The support member 45 supports the substrate 10 by pressing down on both ends of the substrate 10 in the short side direction from above.

[0165] Furthermore, the method of supporting the substrate 10 may be a method of supporting the substrate 10 by clamping both end portions of the substrate 10, as in an LED lighting device 3R shown in Fig. 28. In this case, as shown in Fig. 28, a main plate portion 41R of a frame 40R has clamping portions 41d that clamp the end portions of the substrate 10.

[0166] In the above-described first embodiment and the like, the substrate 10 is fixed to the frame 40 by the claws 43 provided on the main plate 41 of the frame 40, but this is not limiting. For example, as in an LED lighting device 3S shown in FIG. 29 , the substrate 10 and the main plate 41 of the frame 40 may be fixed together by an adhesive 70. The adhesive 70 is inserted between the substrate 10 and the main plate 41.

[0167] In addition, in the above-mentioned first embodiment and the like, when the LED illumination device 3 is attached to the fixture body 2, the LED illumination device 3 is rotated so that the second side plate portion 422, which has a larger protrusion amount, faces the rotation axis side, but this is not limited to this. In other words, the LED illumination device 3 may be attached to the fixture body 2 by rotating it so that the first side plate portion 421, which has a smaller protrusion amount, faces the rotation axis side.

[0168] The LED lighting device 3 may also be attached to the fixture body 2 without rotating the LED lighting device 3. Specifically, the LED lighting device 3 may be moved in the vertical direction so as to translate the LED lighting device 3 toward the fixture body 2 installed on the ceiling, and then the LED lighting device 3 may be pressed vertically into the recess 2a of the fixture body 2 to fit it in, thereby attaching the LED lighting device 3 to the fixture body 2.

[0169] Furthermore, in the above-described first embodiment and the like, an SMD-type LED element in which an LED chip is mounted in a package is used as the LED 20, and the light-emitting module consisting of the substrate 10 and the LED 20 is an SMD-type LED module, but this is not limiting. For example, the light-emitting module consisting of the substrate 10 and the LED 20 may be a COB (Chip On Board) type LED module. In this case, LED chips (bare chips) themselves may be used as the LED 20, and multiple LEDs 20 (LED chips) may be linearly arranged on the substrate 10, and the multiple LEDs 20 may be collectively or individually sealed with a sealing member (for example, a phosphor-containing resin).

[0170] Furthermore, in the above-described first embodiment and the like, the cover member 30 having both diffusive and translucent properties is used, but this is not limiting. For example, a translucent cover having only translucent properties out of the diffusive and translucent properties may be used instead of the cover member 30. In this case, a transparent cover with high transmittance that allows the viewer to see through to the other side may be used as the translucent cover.

[0171] In addition, various modifications that can be made to the above embodiments by those skilled in the art are possible. The present invention also includes forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the spirit of the present invention. [Explanation of symbols]

[0172] 1 LED lighting fixture 2. Device body 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M, 3N, 3O, 3P, 3Q, 3R, 3S LED lighting equipment 4 Power supply 5 Hook 8 Power terminal block 9 Power line 10 Substrate 20 LED 30, 30C, 30F, 30J, 30L cover parts 31 Cover body 31a Protrusion 31a1 Recess 32, 32C, 32J, 32L mounting part 33, 33F extension piece 40, 40A, 40B, 40D, 40E, 40F, 40G, 40H, 40I, 40J, 40K, 40L, 40M, 40N, 40Q, 40R Frame 41, 41D, 41E, 41F, 41H, 41I, 41K, 41M, 41N, 41R Main plate section 41b Recess 42, 42A, 42B, 42J, 42L side plate part

Claims

1. a substrate on which an LED is arranged; a frame to which the substrate is attached; a cover member attached to the frame so as to cover the substrate, the frame has a long main plate portion to which the substrate is attached, and a pair of side plate portions protruding from both ends of the main plate portion in a short side direction toward a side opposite to the LED side, a protrusion amount of at least a portion of one of the pair of side plate portions is smaller than a protrusion amount of the other of the pair of side plate portions; The cover member has a cover main body portion and a pair of attachment portions extending from the cover main body portion toward the frame and attached to the frame, each of the pair of mounting portions is located outside each of the pair of side plate portions; At least one of the pair of mounting portions has a recess into which a tip end portion of one of the side plate portions is fitted, The recess is provided midway in the extension direction of the one mounting portion. LED lighting equipment.

2. At least one of the pair of mounting portions has a recess into which a tip end portion of one of the side plate portions is fitted, The recess is provided at a tip end of the one mounting portion. The LED lighting device according to claim 1 .

3. a protrusion amount of the one side plate portion is smaller than a protrusion amount of the other side plate portion over the entire length of the frame in the longitudinal direction; The LED lighting device according to claim 1 or 2.

4. the one side plate portion has a first notch portion so that the protrusion amount is partially reduced in the longitudinal direction of the frame; The LED lighting device according to claim 1 or 2.

5. The first cutout portion is formed corresponding to a position through which a power line connected to the terminal block passes. The LED lighting device according to claim 4.

6. the other side plate portion has a second notch portion in the longitudinal direction of the frame so that the protrusion amount is partially reduced; The LED lighting device according to claim 4 or 5.

7. the first cutout portion and the second cutout portion are formed corresponding to positions through which a power line for supplying AC power from one of two adjacent LED illumination devices to the other LED illumination device passes; The LED lighting device according to claim 6.

8. The pair of side plate portions are inclined in a direction in which they approach each other as they move away from the main plate portion. The LED lighting device according to any one of claims 1 to 7.

9. The LED lighting device according to any one of claims 1 to 8; and a fixture body that holds the LED lighting device. LED lighting fixture.

10. The LED lighting device is attached to the fixture body by rotating the other side plate portion so that the other side plate portion faces the rotation axis. The LED lighting fixture according to claim 9.

11. a power supply device for supplying power to the LED; The power supply device is disposed on the opposite side of the main board portion from the substrate side. The LED lighting fixture according to claim 9 or 10.

12. The power supply device is disposed closer to the other side plate portion. The LED lighting fixture according to claim 11.

13. The LED lighting device is detachably attached to the fixture body. The LED lighting fixture according to any one of claims 9 to 12.

14. the LED lighting device has a hook that can be hooked onto the fixture body, The metal hook is provided on a portion of the frame on the side of the other side plate portion. The LED lighting fixture according to claim 13.

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