LED lighting devices and LED lighting fixtures

Abstract

To provide an LED lighting device capable of suppressing the deformation of a frame while actualizing the securement of a wide wiring space on the rear side of the frame and the suppression of wire biting of a conductive wire arranged on the rear side of the frame.SOLUTION: AN LED lighting device 3 includes a base plate 10 on which an LED 20 is arranged, a long-sized frame 40 to which the base plate 10 is mounted, and a long-sized cover member 30 mounted to the frame 40 to cover the LED 20, the frame 40 having a portion to which the base plate is mounted and which is formed in a flat shape as a whole, the portion having at least one protruded reinforcement part 41 formed in a linear shape along the longitudinal direction of the frame 40.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 a substrate on which LEDs are mounted is attached, and a pair of side plates extending from both ends of the main plate in the short side direction (width direction) toward the ceiling. The side plates of the cover member are attached to the side plates of this frame.

[0005] As described above, the conventional frame has a generally U-shaped cross section, and a recess surrounded by a main plate and a pair of side plates is formed on the rear side (ceiling side) of the frame. A power supply unit and functional components such as a sensor unit are placed in this recess of the frame. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-116299 Summary of the Invention [Problem to be solved by the invention]

[0007] If the frame has a pair of side panels extending toward the ceiling (i.e., if the cross-sectional shape of the frame is approximately U-shaped), the wiring space on the ceiling side of the frame for placing conductive wires connected to the power supply unit and functional components will be narrowed.

[0008] Therefore, it is conceivable to configure the frame without the pair of side plates, for example, by configuring the frame only with flat plate members.

[0009] However, simply making the overall shape of the frame flat reduces the strength of the frame and the rigidity of the LED lighting device, which can cause the frame to deform, which can lead to deformation of the LED lighting device.

[0010] 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 prevent the frame from deforming even if the main plate portion to which the substrate is attached is made flat. [Means for solving the problem]

[0011] In order to achieve the above object, one aspect of the LED lighting device according to the present invention comprises a substrate on which LEDs are arranged, a long frame to which the substrate is attached, and a long cover member attached to the frame so as to cover the LEDs, wherein the frame has a portion to which the substrate is attached and which is formed in a flat plate shape overall, and the portion has at least one linear protrusion reinforcing portion formed along the longitudinal direction of the frame.

[0012] An embodiment of an LED lighting fixture according to the present invention includes the above LED lighting device and a fixture body that holds the LED lighting device. [Effects of the Invention]

[0013] Even if the main plate portion to which the substrate is attached is made flat, deformation of the frame can be suppressed. [Brief explanation of the drawings]

[0014] [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 cross-sectional view of the LED lighting device according to the first embodiment. [Figure 10] FIG. 10 is a cross-sectional view of an LED lighting device according to Modification 1 of Embodiment 1. As shown in FIG. [Figure 11] FIG. 11 is a cross-sectional view of an LED lighting device according to Modification 2 of Embodiment 1. As shown in FIG. [Figure 12] FIG. 12 is a cross-sectional view of an LED lighting device according to Modification 3 of Embodiment 1. As shown in FIG. [Figure 13] FIG. 13 is a cross-sectional view of an LED lighting device according to the fourth modification of the first embodiment. [Figure 14] FIG. 14 is a cross-sectional view of an LED lighting device according to Modification 5 of Embodiment 1. As shown in FIG. [Figure 15] FIG. 15 is a cross-sectional view of an LED lighting device according to the second embodiment. [Figure 16]FIG. 16 is a cross-sectional view of an LED lighting device according to Modification 1 of Embodiment 2. As shown in FIG. [Figure 17] FIG. 17 is a cross-sectional view of an LED lighting device according to Modification 2 of Embodiment 2. As shown in FIG. [Figure 18] FIG. 18 is a cross-sectional view of an LED lighting fixture according to the first modification. [Figure 19] FIG. 19 is a cross-sectional view of an LED lighting device according to the second modification. [Figure 20] FIG. 20 is a top view of a frame used in an LED lighting fixture according to the third modification. [Figure 21] FIG. 21 is a cross-sectional view showing a first modified example of the frame. [Figure 22] FIG. 22 is a cross-sectional view showing a second modified example of the frame. [Figure 23] FIG. 23 is a cross-sectional view showing a third modified example of the frame. [Figure 24] FIG. 24 is a cross-sectional view of an LED lighting device according to the fourth modification. [Figure 25] FIG. 25 is a cross-sectional view of an LED lighting device according to the fifth modification. [Figure 26] FIG. 26 is a cross-sectional view of an LED lighting device according to the sixth modification. [Figure 27] FIG. 27 is a cross-sectional view of an LED lighting device according to the seventh modification. [Figure 28] FIG. 28 is a cross-sectional view of an LED lighting device according to Modification 82. [Figure 29] FIG. 29 is a cross-sectional view of an LED lighting device according to the ninth modification. [Figure 30] FIG. 30 is a cross-sectional view of an LED lighting device according to the tenth modification. [Figure 31] FIG. 31 is a perspective view of a frame used in the LED lighting fixtures according to Modifications 8 to 10. As shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0015] 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.

[0016] 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.

[0017] (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.

[0018] 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.

[0019] 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.

[0020] 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.

[0021] 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. As will be described in detail later, 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.

[0022] 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 a device for supplying power to the LED lighting device 3. The power supply device 4 is an example of an electrical functional component.

[0023] 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 the 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 may be disposed in the fixture body 2 separately from the LED lighting device 3, rather than being integrated with the LED lighting device 3.

[0024] The power supply device 4 is configured with a power supply circuit that generates power for illuminating the LED lighting device 3. Specifically, the power supply device 4 has a circuit board 4a such as a printed wiring board, and a plurality of electronic components 4b mounted on the circuit board 4a. In this embodiment, the power supply device 4 further has a circuit case 4c that houses the circuit board 4a on which the plurality of electronic components 4b are mounted. The circuit case 4c is, for example, a metal housing. The power supply circuit that constitutes 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 LEDs of the LED lighting device 3.

[0025] AC power is supplied to the power supply device 4 via a power terminal block 8 (see FIG. 2) connected to a power line (such as a VVF cable) 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] When the substrate 10 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 10 may be a rigid substrate or a film-like flexible substrate.

[0034] The metal wiring formed on the substrate 10 is electrically connected to the power supply device 4. In this case, the electrodes or connector terminals formed on the substrate 10 are connected to the power supply device 4 by conductive wires. The conductive wires connecting the substrate 10 and the power supply device 4 are inserted, for example, into through holes provided in the frame 40.

[0035] 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.

[0036] 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.

[0037] The LEDs 20 emit light when a direct current is supplied from the power supply 4 via conductive wires connecting the power supply 4 and the substrate 10.

[0038] 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.

[0039] 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. In this embodiment, the cover member 30 covers the entire substrate 10 on which the LEDs 20 are arranged.

[0040] 5 and 6, the cover member 30 further covers the frame 40 on which the substrate 10 is arranged. In this embodiment, the cover member 30 covers the entire frame 40 on which the substrate 10 is arranged. Note that the cover member 30 is formed in an elongated shape in the Y-axis direction, similar to the substrate 10 and the frame 40.

[0041] 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.

[0042] 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 portion 31 and an attachment portion 32 connected to the cover main body portion 31.

[0043] As shown in Fig. 7, the cover main body 31 is elongated in the Y-axis direction and formed in a gutter shape. The cover main body 31 has, for example, a flat, approximately semi-cylindrical shape. Therefore, the cover main body 31 has an elongated rectangular opening end surface extending in the Y-axis direction. Furthermore, the cross-sectional shape of the cover main body 31 when cut along the X-axis direction has a curved shape that is curved in an approximately arc shape.

[0044] 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 recessed on the side opposite the frame 40. If the recess 31a1 is formed, it may become an insect pocket and accumulate dead insects or foreign matter, which may prevent the short-side end of the cover body 31 from shining brightly. 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 first clamping piece 32a of the mounting portion 32.

[0045] The mounting portion 32 is a portion that is attached to the frame 40. Specifically, the mounting portion 32 is attached to an end portion in the short side direction (width direction) of the frame 40. The mounting portion 32 includes an extension portion that extends from the cover main body portion 31 toward the ceiling side.

[0046] In this embodiment, the attachment portions 32 are provided at both ends in the short direction of the frame 40. That is, the cover member 30 has a pair of attachment portions 32.

[0047] The pair of mounting portions 32 are provided on the cover main body 31. Specifically, the pair of 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, but this is not limited to this.

[0048] 3 and 6, the mounting portion 32 has a first clamping piece 32a and a second clamping piece 32b as a pair of clamping pieces that clamp the short-side end of the frame 40. Therefore, the short-side end of the frame 40 is located between the first clamping piece 32a and the second clamping piece 32b and is clamped by the first clamping piece 32a and the second clamping piece 32b. As a result, the frame 40 is held by the mounting portion 32 while its movement in the thickness direction (Z-axis direction) is restricted. In this way, the mounting portion 32 also functions as a holding portion that holds the frame 40.

[0049] Specifically, the mounting portion 32 has a first clamping piece 32a and a second clamping piece 32b, as well as an upright portion 32c extending in the Z-axis direction. Therefore, the mounting portion 32 has a recess with a U-shaped cross section formed by the first clamping piece 32a, the second clamping piece 32b, and the upright portion 32c. The short-side end of the frame 40 is inserted into this recess of the mounting portion 32. This restricts movement of the frame 40 not only in the thickness direction (Z-axis direction) but also in the horizontal direction (X-axis direction).

[0050] The first clamping piece 32a and the second clamping piece 32b are plate pieces formed into a plate shape with a uniform thickness. The first clamping piece 32a is a plate piece located on the floor side, and the second clamping piece 32b is a plate piece located on the ceiling side.

[0051] The first clamping piece 32a and the second clamping piece 32b are provided on each of the pair of mounting portions 32. Therefore, both ends of the frame 40 in the short side direction are held by the first clamping piece 32a and the second clamping piece 32b on each of the pair of mounting portions 32. Specifically, each of the both ends of the frame 40 in the short side direction is inserted into a recess having a U-shaped cross section in each mounting portion 32, which is formed by the first clamping piece 32a, the second clamping piece 32b, and the upright portion 32c.

[0052] In each mounting portion 32, both the first clamping piece 32a and the second clamping piece 32b do not necessarily have to be in contact with the short-side end of the frame 40. Specifically, only one of the first clamping piece 32a and the second clamping piece 32b may be in contact with the short-side end of the frame 40. For example, when the LED lighting device 1 is installed on a ceiling, as shown in FIG. 3, the second clamping piece 32b on the ceiling side may not be in contact with the short-side end of the frame 40, and only the first clamping piece 32a on the floor side may be in contact with the short-side end of the frame 40. In this case, the first clamping piece 32a on the floor side functions as a stopper that supports the frame 40. In other words, the pair of first clamping pieces 32a on the floor side support the short-side end of the frame 40 to prevent the frame 40 from shifting toward the light-emitting side (floor side) of the LEDs 20.

[0053] The first clamping piece 32a and the second clamping piece 32b stand upright from the upright portion 32c on the inside of the upright portion 32c. Specifically, the first clamping piece 32a and the second clamping piece 32b are formed to protrude in the X-axis direction and extend in the X-axis direction. The first clamping piece 32a and the second clamping piece 32b are formed in parallel.

[0054] In this embodiment, the lengths in the X-axis direction of the first clamping pieces 32a and the second clamping pieces 32b in each mounting portion 32 are the same. Furthermore, the lengths in the X-axis direction of the pair of first clamping pieces 32a in a pair of mounting portions 32 are also the same, and the lengths in the X-axis direction of the pair of second clamping pieces 32b in a pair of mounting portions 32 are also the same. Note that the first clamping pieces 32a and the second clamping pieces 32b in each pair of mounting portions 32 are provided at the same height position in the Z-axis direction. Therefore, the two first clamping pieces 32a and the two second clamping pieces 32b in the short side direction of the cover member 30 are symmetrical.

[0055] 7, the first clamping piece 32a and the second clamping piece 32b of each mounting portion 32 are formed elongated along the Y-axis direction. The first clamping piece 32a and the second clamping piece 32b also have the same length in the Y-axis direction. As an example, the first clamping piece 32a and the second clamping piece 32b have the same shape and the same length, but this is not limited thereto. The lengths of the upright portions 32c of each mounting portion 32 in the Z-axis direction are also the same, but this is not limited thereto.

[0056] The attachment portion 32 configured in this manner also has the function of preventing insects from entering the space between the cover member 30 and the frame 40. For example, contact between the first clamping piece 32a and the frame 40 can prevent insects from entering through a gap between the first clamping piece 32a of the cover member 30 and the frame 40. This can prevent insects from entering the space between the cover main body portion 31 of the cover member 30 and the frame 40.

[0057] 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.

[0058] 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.

[0059] In this embodiment, the cover body 31 and the attachment portion 32 that constitute the cover member 30 are integrally formed. Therefore, the cover body 31 and the attachment portion 32 are made of the same material.

[0060] The cover member 30 may be made of two or more types of resin material instead of one type of resin material. For example, the cover main body 31 and the attachment portion 32 may be made of different resin materials. As an example, the cover main body 31 may be made of a translucent resin material, and the attachment portion 32 may be made of a white resin material. In this case, the cover member 30 may be formed by two-color molding.

[0061] 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.

[0062] The frame 40 is made of sheet metal and is configured from a metal plate. The frame 40 is formed into a predetermined shape by performing roll forming, press working, or the like on a single sheet metal (metal plate) made of, for example, SPCC (Steel Plate Cold Commercial).

[0063] As shown in FIGS. 3 to 7, the frame 40 has a main plate portion as a portion formed in a flat plate shape as a whole. In this embodiment, the frame 40 is composed only of the main plate portion, and all or most of the frame 40 is formed in a flat plate shape. Specifically, the frame 40 is approximately I-shaped in the XZ cross section. Therefore, the frame 40 does not have a pair of side plates extending toward the ceiling side like a conventional frame having an approximately U-shaped cross section, and has a thin shape with a low height in the Z-axis direction. Note that the frame 40 is formed in an elongated shape in the Y-axis direction, similar to the base plate 10 and the fixture body 2.

[0064] The thickness of the metal plate that constitutes the frame 40 is, for example, 0.2 mm to 2 mm. In the present embodiment, since the frame 40 is formed by sheet metal processing, the thickness of the metal plate that constitutes the frame 40 is preferably 1 mm or less. Specifically, the thickness of the metal plate that constitutes the frame 40 is set to 0.5 mm.

[0065] A substrate 10 on which LEDs 20 are mounted is disposed on the frame 40. Specifically, the substrate 10 is disposed on a portion (main board portion) of the frame 40 that is formed in a generally flat plate shape. The substrate 10 is placed on the floor side surface of the frame 40. A second surface 10b of the substrate 10 and the floor side surface of the frame 40 are in surface contact with each other.

[0066] Using frame 40 as a reference, the direction on the side of frame 40 where substrate 10 is placed is defined as the front (first direction), and the direction opposite to the front is defined as the rear (second direction). In this embodiment, the front side of frame 40 is the floor side (cover member 30 side), and the rear side of frame 40 is the ceiling side (rear side).

[0067] The substrate 10 is attached to a portion (main plate portion) of the frame 40 that is formed in a generally flat plate shape. For example, the substrate 10 is fixed to the frame 40 by claw portions formed on the frame 40. The claw portions can be formed by cutting and raising parts of the frame 40 made of sheet metal. The substrate 10 placed on the frame 40 is fixed to the frame 40 by bending the claw portions and engaging with the claw portions. The frame 40 also has through holes through which conductive wires are inserted to electrically connect the electrodes of the substrate 10 to the power supply device 4.

[0068] The flat frame 40 as a whole is arranged so as to be parallel to the ceiling. Specifically, the flat frame 40 is arranged so that the substrate 10 arranged on the frame 40 is parallel to the ceiling.

[0069] As shown in FIGS. 3 and 7 , the overall flat-plate-shaped portion (main plate portion) of the frame 40 has at least one linear protrusion reinforcing portion 41 extending along the longitudinal direction of the frame 40. That is, the protrusion reinforcing portion 41 is formed so as to protrude from the main surface of the main plate 40M in a cross-sectional view and to extend linearly. The reinforcing portion 41 can be formed by press working such as beading or embossing. In this embodiment, the reinforcing portion 41 is formed by applying beading (stretching) to the metal plate constituting the frame 40. Specifically, the reinforcing portion 41 can be formed by deforming the metal plate in the thickness direction by pushing the metal plate upward in one direction in the thickness direction using a mold or the like. The reinforcing portion 41 thus formed is composed of a linear protrusion formed on one surface of the metal plate and a linear recess formed on the other surface of the metal plate at a position opposite to the protrusion. That is, the thickness of the metal plate at the reinforcing portion 41 is basically the same as the thickness of the metal plate without the reinforcing portion 41. In this way, by forming the reinforcing portion 41 on the frame 40, the rigidity of the frame 40 can be increased. In other words, the reinforcing portion 41 functions as a reinforcing rib for increasing the mechanical strength.

[0070] The cross-sectional shape of the reinforcing portion 41 is, for example, a part of a circle, and in this embodiment, is semicircular. That is, the outer shape of the convex portion of the reinforcing portion 41 and the inner shape of the reinforcing portion 41 are both semicircular.

[0071] The reinforcing portion 41 is formed from one end to the other end in the longitudinal direction of the frame 40. Note that the reinforcing portion 41 may be formed discontinuously along the longitudinal direction of the frame 40.

[0072] A plurality of reinforcing portions 41 are formed on the frame 40. The reinforcing portions 41 are formed in parallel. In this embodiment, the reinforcing portions 41 are formed on both sides of the frame 40, and include a first reinforcing portion 41a that protrudes forward (toward the floor) and a second reinforcing portion 41b that protrudes rearward (toward the ceiling). Two of each of the first reinforcing portions 41a and second reinforcing portions 41b are provided. In other words, four reinforcing portions 41 are provided.

[0073] As shown in FIG. 7 , both longitudinal ends of the first reinforcing portion 41a are located at positions set back from the longitudinal edges of the frame 40. In other words, the first reinforcing portion 41a does not extend to the longitudinal edges of the frame 40. On the other hand, the longitudinal ends of the second reinforcing portion 41b extend to the longitudinal edges of the frame 40. Note that both longitudinal ends of the first reinforcing portion 41a may extend to the longitudinal edges of the frame 40, and both longitudinal ends of the second reinforcing portion 41b may not extend to the longitudinal edges of the frame 40. Alternatively, both longitudinal ends of the first reinforcing portion 41a and both longitudinal ends of the second reinforcing portion 41b may extend to the longitudinal edges of the frame 40, or neither may extend to the longitudinal edges of the frame 40.

[0074] The width of the convex portion of the reinforcing portion 41 is, for example, 10 mm or less to 5 mm or less, and in this embodiment, it is set to about 3 mm. The height of the convex portion of the reinforcing portion 41 is, for example, 5 mm or less. In this embodiment, the width and height of the convex portion of each of the multiple reinforcing portions 41 are all the same, but this is not limited to this. The cross-sectional shapes of the multiple reinforcing portions 41 are also all the same, but this is not limited to this.

[0075] The substrate 10 disposed on the frame 40 is positioned between two adjacent reinforcing portions 41 among the multiple reinforcing portions 41. Specifically, as shown in FIG. 3, the substrate 10 is positioned between two first reinforcing portions 41a. Therefore, the distance between the two first reinforcing portions 41a is greater than the length (width) of the substrate 10 in the short direction. In this embodiment, the two first reinforcing portions 41a sandwiching the substrate 10 are adjacent to the side surfaces of the substrate 10. In other words, the distance between the two first reinforcing portions 41a is approximately the same as the width of the substrate 10. This allows the two first reinforcing portions 41a to restrict movement of the substrate 10 in the width direction. In other words, the position of the substrate 10 can be determined by the two first reinforcing portions 41a.

[0076] In particular, when the electrical connection between the power supply 4 and the LED module (wiring on the substrate 10) is made by directly connecting them with pins without using lead wires (secondary side wiring-less structure), highly precise positioning control is required. However, by positioning the substrate 10 using the two first reinforcing parts 41a, the electrical connection between the power supply 4 and the LED module can be made with high precision even when a secondary side wiring-less structure is adopted.

[0077] Furthermore, in the multiple reinforcing portions 41, the distance between two second reinforcing portions 41b is smaller than the distance between two first reinforcing portions 41a that sandwich the substrate 10. Therefore, the two second reinforcing portions 41b are formed at positions that overlap the substrate 10 in the thickness direction (Z-axis direction) of the frame 40. That is, in top view, the two second reinforcing portions 41b overlap the substrate 10. Furthermore, in top view, both of the two second reinforcing portions 41b are located inside the two first reinforcing portions 41a.

[0078] An end portion of the frame 40 in the short side direction (width direction) is attached to the cover member 30. Specifically, each of both ends of the frame 40 in the short side direction is attached to the cover member 30. More specifically, the end portion of the frame 40 in the short side direction is clamped by a first clamping piece 32a and a second clamping piece 32b provided on each of a pair of mounting portions 32 of the cover member 30, thereby attaching the frame 40 to the cover member 30.

[0079] In the present embodiment, a folded portion 42 provided at an end portion in the short direction of the frame 40 is attached to the cover member 30. In other words, the folded portion 42 of the frame 40 is attached to the cover member 30. Specifically, the folded portion 42 of the frame 40 is inserted into a recess having a U-shaped cross section formed by the first clamping piece 32a, the second clamping piece 32b, and the upright portion 32c of the cover member 30.

[0080] The folded portion 42 is formed by folding back, in the thickness direction, the front end portion in the short side direction of a portion (main plate portion) of the frame 40 that is formed in a generally flat plate shape. In this embodiment, the folded portion 42 is composed of a folded portion and a portion (non-folded portion) that faces the folded portion. The folded portion of the folded portion 42 can be formed, for example, by curling and rolling up the front end portion in the short side direction of the frame 40 toward the ceiling. Note that the folded portion 42 is not limited to being formed by curling, and may also be formed by hemming or the like.

[0081] When fixing the cover member 30 and the frame 40 together, the folded portion 42 of the frame 40 is inserted between the first clamping piece 32a and the second clamping piece 32b of the cover member 30, and the folded portion 42 is engaged with the first clamping piece 32a and the second clamping piece 32b. This allows the cover member 30 and the frame 40 to be fixed together by being engaged with each other. The cover member 30 and the frame 40 may also be fixed together with mounting screws.

[0082] As shown in Fig. 3, a space area S is formed on the ceiling side of the frame 40. In other words, the space area S exists between the fixture body 2 and the frame 40. The power supply device 4 is disposed in this space area S. The power supply device 4 is disposed close to one side in the short direction of the frame 40. Specifically, the power supply device 4 is disposed close to the side where the hook metal fitting 5 is provided (the left side in Fig. 3).

[0083] At least one of the reinforcing portions 41 of the frame 40 is covered by the power supply device 4 arranged on the ceiling side of the frame 40. That is, in a top view, at least a part of the reinforcing portion 41 overlaps with the power supply device 4. In this embodiment, all of the reinforcing portions 41 are covered by the power supply device 4. That is, the two first reinforcing portions 41a and the two second reinforcing portions 41b are covered by the power supply device 4.

[0084] Furthermore, functional components related to the illumination of the LEDs 20 may be disposed in the spatial region S on the ceiling side of the frame 40 as components constituting the LED illumination device 3. Such functional components are function expansion modules. Examples of the function expansion module include a sensor unit equipped with various sensors such as a motion sensor and a brightness sensor, a wireless module having an antenna and a control circuit for receiving wireless signals, an infrared module having a light receiving element and a control circuit for receiving infrared signals, or a second light source separate from the LEDs 20 (first light source) mounted on the substrate 10. The wireless signal or infrared signal may be, for example, a remote control signal for turning the LEDs 20 on and off or adjusting the brightness and color of the LEDs 20, or a setting signal for performing various settings of the LED illumination device 3. Examples of the second light source include a light source for monitor display, a light source for controlling the light distribution of illumination light emitted from the cover member 30 (e.g., a light source for achieving a wide light distribution), a color light source for creating effects (e.g., red, blue, and green LED light sources), or an emergency light source that turns on in an emergency. When an emergency light source is used as the second light source, the cover and / or cover member 30 that covers the second light source may be made of a flame-retardant material such as glass.

[0085] The functional components arranged in the spatial region S and the power supply device 4 are electrically connected by conductive wires. The conductive wires are one of the components that make up the LED lighting device 3. The conductive wires are arranged in the spatial region S together with the functional components. In other words, the conductive wires connected to the functional components are housed in the spatial region S together with the power lines connected to the power supply device 4. The spatial region S also houses an elastic holding member 6 shown in FIG. 3.

[0086] A long cylindrical body is formed by fixing the cover member 30 and the frame 40. As shown in Figures 1 to 5, end caps 50 are attached to both ends in the longitudinal direction of the cylindrical body formed by the cover member 30 and the frame 40.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] The LED lighting device 3 configured as described above 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 Figs. 3 to 5. The hook 5 and the elastic holding member 6 are fixed to a frame 40.

[0091] As shown in FIG. 3, the hook fitting 5 is disposed on the rear side (ceiling side) of the frame 40. 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. As an example, the hook fitting 5 is fixed to the frame 40 with a fixing member such as a screw, and extends so as to protrude outward from the frame 40. The hook fitting 5 is hooked onto the fixture main body 2. In this embodiment, a slit 2c (see FIG. 2) 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.

[0092] The elastic holding member 6 is disposed on the rear side (ceiling side) of the frame 40. The elastic holding member 6 is, for example, 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 metal fitting 5 in the width direction of the frame 40. The elastic holding member 6 is fixed to the frame 40 by a fixing member such as a screw. Specifically, the elastic holding member 6 is fixed to a holding metal fitting 6c (see FIG. 5 ) fixed to the frame 40 by an attachment screw. The elastic holding member 6 is detachably attached to the appliance main body 2. In this embodiment, the elastic holding member 6 is detachably engaged with a receiving metal fitting 7 fixed to the appliance main body 2.

[0093] 2, two metal hooks 5 and two elastic holding members 6 are provided, but this is not limiting. Also, the metal hooks 5 and the elastic holding members 6 are provided at positions facing each other in the short-side direction of the frame 40, but this is not limiting.

[0094] 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.

[0095] 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.

[0096] In this case, since the frame 40 is generally flat and has no side plate portion extending rearward, it is possible to shorten the length in the Z-axis direction of the mounting portion 32 of the cover member 30 attached to the frame 40. Therefore, when the LED lighting device 3 is viewed from the side, most of the elastic holding member 6 is exposed, so that part of the elastic holding member 6 (specifically, the end of the kick spring) can be easily pulled out.

[0097] Next, as shown in (b) of Figure 8, the hook fitting 5 is pushed deep into the slit 2c while the LED lighting device 3 is rotated around the hook fitting 5 as a fulcrum, thereby pushing the LED lighting device 3 up into the recess 2a of the fixture body 2.

[0098] In this embodiment, the power supply unit 4 arranged on the rear side of the frame 40 is positioned closer to the hook 5. In other words, the power supply unit 4 is positioned closer to the rotation axis. By positioning the heavy power supply unit 4 closer to the rotation axis in this way, the LED lighting device 3 can be rotated with a small force.

[0099] Then, by rotating the LED lighting device 3 and pushing it into the recess 2a of the fixture body 2, the LED lighting 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 lighting device 3 can be attached to the fixture body 2.

[0100] When removing the LED lighting device 3 from the fixture body 2, the LED lighting device 3 can be removed from the fixture body 2 by performing the above-described operations in reverse.

[0101] In this way, when the LED lighting device 3 is attached to or detached from the fixture body 2, the LED lighting device 3 of this embodiment uses the frame 40 which is formed in a generally flat plate shape, which prevents the LED lighting device 3 and the fixture body 2 from being scratched and prevents the conductive wires routed behind the frame 40 from being caught. This point will be explained below.

[0102] Conventional frames have side panels that extend toward the ceiling, so when attaching an LED lighting device having this frame to the fixture body 2, the side panels of the frame may come into contact with the fixture body 2, or the side panels of the cover member attached to these side panels may come into contact with the fixture body 2, resulting in scratches in unintended locations.

[0103] In contrast, in the LED lighting device 3 according to this embodiment, the frame 40 is generally flat and has no side plate portions extending toward the ceiling. This reduces the overall thickness of the frame 40, and as a result, the overall thickness of the cover member 30 attached to the frame 40 also reduces. This prevents parts of the frame 40 or the cover member 30 from coming into contact with the fixture body 2 when attaching the LED lighting device 3 to the fixture body 2. In other words, it is possible to prevent the LED lighting device 3 or the fixture body 2 from being scratched in unintended locations during installation.

[0104] Furthermore, if the side plates extend toward the ceiling as in conventional frames, there is a risk that conductive wires such as power lines or signal lines routed to the ceiling side (back side) of the frame may become pinched between the side plates of the frame and the fixture body 2, or between the side plates of a cover member attached to the side plates of the frame and the fixture body 2. In other words, there is a risk of wire entrapment occurring.

[0105] In contrast, in the LED lighting device 3 according to this embodiment, the frame 40 is generally flat and does not have any side plate portions extending long toward the ceiling side, so that it is possible to prevent the conductive wires arranged on the ceiling side of the frame 40 from being pinched between a part of the frame 40 and the fixture body 2, or between a part of the cover member 30 and the fixture body 2. In other words, it is possible to prevent the conductive wires from getting caught.

[0106] In this way, by using the LED lighting device 3 according to this embodiment, it is possible to prevent the LED lighting device 3 and the fixture body 2 from being scratched and the conductive wires routed on the rear side of the frame 40 from being caught. Therefore, the LED lighting device 3 can be easily attached to the fixture body 2. In other words, the workability of the LED lighting fixture 1 is improved.

[0107] Furthermore, the frame 40 in this embodiment is generally flat, and does not have side plates extending toward the ceiling, as in conventional frames. This eliminates the need to provide side plates that cover the side plates of the frame on the cover member attached to the frame. In other words, the cover member 30 attached to the frame 40 also does not have side plates that extend toward the rear. This allows the spatial region S on the ceiling side of the frame 40 to be expanded, as shown in FIG. 3. This allows for a larger wiring space for arranging conductive wires, such as power lines, on the ceiling side (rear side) of the frame 40.

[0108] In this way, with the LED lighting fixture 1 and the LED lighting device 3 according to this embodiment, it is possible to ensure a large wiring space on the rear side of the frame 40, while preventing the conductive wires arranged on the rear side of the frame 40 from getting caught when the LED lighting fixture 1 is installed.

[0109] Furthermore, by using the frame 40 formed in a flat plate shape as a whole, even when the cover member 30 is attached to the frame 40, the height (thickness) of the cylinder formed by the frame 40 and the cover member 30 can be reduced. In other words, the height (thickness) of the LED lighting device 3 can be reduced, and the height of the LED lighting device 3 can be reduced. This makes it easy to attach and detach the LED lighting device 3 to and from the fixture body 2.

[0110] Moreover, by using a flat frame 40 that does not have side panels extending toward the ceiling, it is possible to reduce the weight of the frame 40 and also reduce material costs and processing costs, thereby reducing the cost of the frame 40. Therefore, it is possible to reduce the weight and cost of the LED lighting device 3.

[0111] However, the frame 40 of this embodiment, which does not have a pair of side plates, has lower mechanical strength than a conventional frame with a U-shaped cross section that has a pair of side plates. Therefore, the frame 40 of this embodiment is prone to deformation due to flexing and warping. As a result, even if the cover member 30 is attached to the frame 40 of this embodiment, the rigidity of the cylindrical body formed by the frame 40 and the cover member 30 is lower than that of a conventional frame with side plates. Therefore, there is a risk of the frame 40 being deformed during installation, etc.

[0112] Therefore, in the LED lighting fixture 1 and the LED lighting device 3 according to this embodiment, a reinforcing portion 41 of a protrusion formed linearly along the longitudinal direction of the frame 40 is formed in the portion (main board portion) of the frame 40 where the substrate 10 is attached.

[0113] By forming the reinforcing portion 41 in the portion (main board portion) of the frame 40 where the substrate 10 is attached in this manner, it is possible to prevent a decrease in the strength of the frame 40 even if the portion (main board portion) of the frame 40 where the substrate 10 is attached is made flat as a whole. In other words, by forming the reinforcing portion 41 in the frame 40, it is possible to increase the strength of the frame 40 that would have been reduced by making the entire frame 40 flat. This makes it possible to prevent deformation of the frame 40. Therefore, it is possible to increase the rigidity of the LED lighting device 3, thereby preventing deformation of the LED lighting device 3.

[0114] As described above, with the LED lighting fixture 1 and the LED lighting device 3 according to the present embodiment, even if the portion of the frame 40 where the substrate 10 is attached is formed into a flat plate shape overall, deformation of the frame 40 can be suppressed. Therefore, by using a frame 40 formed into a flat plate shape overall, it is possible to ensure a wide wiring space on the rear side of the frame 40 and suppress wire biting of conductive wires arranged on the rear side of the frame 40, while also suppressing deformation of the frame 40. In other words, it is possible to simultaneously ensure a wide wiring space on the rear side of the frame 40, suppress wire biting of conductive wires, and suppress deformation of the frame 40.

[0115] 9, the LED lighting fixture 1 and the LED lighting device 3 according to this embodiment further include a reinforcing member 60. FIG. 9 is a cross-sectional view of the LED lighting fixture 1 according to embodiment 1, taken along a plane passing through the reinforcing member 60.

[0116] The reinforcing member 60 supports the frame 40. In this embodiment, the reinforcing member 60 also supports the cover member 30. The reinforcing member 60 is fixed to the frame 40 by, for example, a mounting screw 70. Note that the reinforcing member 60 and the frame 40 may be fixed by a method other than the mounting screw 70. For example, the reinforcing member 60 and the frame 40 may be fixed by crimping a part of the reinforcing member 60 and a part of the frame 40 together.

[0117] The reinforcing member 60 is, for example, a metal fitting formed into a predetermined shape by performing sheet metal processing on a metal plate. In this embodiment, the reinforcing member 60 has a shape formed along the shape of the rear side (ceiling side) of the LED lighting device 3. Specifically, the reinforcing member 60 is formed along the ceiling side surface of the second clamping piece 32b of the cover member 30, and is also formed along the ceiling side surface of the frame 40.

[0118] The LED lighting device 3 may include one or more reinforcing members 60. As shown in Fig. 5, in this embodiment, the LED lighting device 3 includes three reinforcing members 60. In this case, the reinforcing members 60 are disposed at both ends and the center of the LED lighting device 3 in the longitudinal direction.

[0119] The reinforcing member 60 may be a part of a metal fitting, such as a holding metal fitting 6c, attached to the LED lighting device 3. The reinforcing member 60 in the center may be a part of the circuit case 4c that constitutes the power supply device 4.

[0120] In this way, by supporting the frame 40 with the reinforcing member 60, it is possible to further prevent deformation of the frame 40. Moreover, since the frame 40 is supported from the rear side by the reinforcing member 60, it is also possible to prevent the frame 40 from coming off the cover member 30.

[0121] Furthermore, the frame 40 in this embodiment has a thin, flat plate-like shape overall, and a substantially I-shaped cross section. Therefore, the frame 40 can be used upside down. Specifically, in FIG. 3, the frame 40 is arranged so that the two widely spaced first convex reinforcing portions 41a are located on the floor side and the two closely spaced second convex reinforcing portions 41b are located on the ceiling side. However, as in the LED lighting fixture 1A and the LED lighting device 3A shown in FIG. 10, the same frame 40 as that shown in FIG. 3 may be used, but the frame 40 may be arranged so that the two widely spaced first convex reinforcing portions 41a are located on the ceiling side and the two closely spaced second convex reinforcing portions 41b are located on the floor side.

[0122] In this case, the substrate 10A placed on the floor side of the frame 40 is placed between two second reinforcing parts 41b that are spaced closely together, so a substrate that is narrower than the substrate 10 shown in Figure 3 is used.

[0123] Since the frame 40 can be used upside down, the spacing between the two reinforcing portions 41, which form convex portions on the floor side of the frame 40, can be widened or narrowed. This allows a wide substrate 10 or a narrow substrate 10A to be placed between the two reinforcing portions 41. When using a narrow substrate 10A, a single row of LEDs 20 emitting light of the same color temperature can be arranged. When using a wide substrate 10A, a two-row layout of LEDs 20 emitting light of different color temperatures can be used. This allows a single frame 40 to be used to realize multiple types of LED lighting devices 3. For example, by simply turning the frame 40 upside down, both a non-dimmable LED lighting device 3 and a dimmable LED lighting device 3 can be manufactured using the same frame 40.

[0124] Instead of turning the frame 40 upside down, a frame 40B may be used in which the two widely spaced second reinforcing portions 41b are located on the ceiling side and the two closely spaced first reinforcing portions 41a are located on the floor side, as in the LED lighting fixture 1B and LED lighting device 3B shown in FIG. 11. This frame 40B may also be placed upside down. When the frame 40B is turned upside down, the wide substrate 10 shown in FIG. 3 can be placed on the frame 40B.

[0125] In addition, in the LED lighting fixture 1 and the LED lighting device 3 shown in FIG. 3, the frame 40 has two first reinforcing parts 41a and two second reinforcing parts 41b formed as multiple reinforcing parts 41, but the number of the first reinforcing parts 41a and two second reinforcing parts 41b is not limited to this.

[0126] For example, as in the LED lighting fixture 1C and LED lighting device 3C shown in Fig. 12, a frame 40C may be used in which two first reinforcing portions 41a and one second reinforcing portion 41b are formed as the multiple reinforcing portions 41. In this case, the second reinforcing portion 41b may be formed in the center of the frame 40C in the short-side direction. The second reinforcing portion 41b may also be formed in a position that overlaps with the LED 20 in a top view.

[0127] Furthermore, as in the LED lighting fixture 1D and LED lighting device 3D shown in Fig. 13, a frame 40D having only two second reinforcing portions 41b formed thereon may be used as the multiple reinforcing portions 41. In other words, a frame 40D having no first reinforcing portions 41a may be used. In this case, as in the LED lighting fixture 1E and LED lighting device 3E shown in Fig. 14, a frame 40E having only one second reinforcing portion 41b may be used. In other words, the number of reinforcing portions 41 is not limited to multiple, and may be only one.

[0128] As in this frame 40E, it is sufficient to form at least one reinforcing portion 41. This makes it possible to effectively improve the strength of the frame 40E.

[0129] (Embodiment 2) Next, the second embodiment will be described with reference to Fig. 15. Fig. 15 is a cross-sectional view of an LED lighting device 1F according to the second embodiment.

[0130] The LED lighting fixture 1F and the LED lighting device 3F according to this embodiment are configured such that a joint 80 is provided between the frame 40 and the substrate 10 in the LED lighting fixture 1 and the LED lighting device 3 shown in FIG.

[0131] The joint 80 is a joining member that joins the substrate 10 and the frame 40. By providing the joint 80 between the substrate 10 and the frame 40 in this manner, the adhesion between the substrate 10 and the frame 40 is improved.

[0132] In this embodiment, the bonding portion 80 is an adhesive made of an insulating resin material. In this case, it is preferable to use a material with excellent thermal conductivity for the bonding portion 80. This allows the heat generated by the LED 20 to be efficiently conducted to the frame 40, thereby improving the dissipation of the heat generated by the LED 20.

[0133] The joint 80 is not limited to adhesive and may be double-sided tape or the like. However, by using adhesive as the joint 80, the stress caused by the difference in thermal expansion coefficient between the frame 40 and the substrate 10 can be absorbed by the adhesive. Furthermore, by using adhesive as the joint 80, the adhesive can be filled without forming a gap between the substrate 10 and the frame 40, so that the heat generated by the LED 20 can be effectively dissipated. In the present embodiment, adhesive is used as the joint 80.

[0134] 15, in this embodiment, the second reinforcing portion 41b of the multiple reinforcing portions 41 is formed at a position overlapping the substrate 10. Therefore, the joint portion 80 inserted between the substrate 10 and the frame 40 is also provided in the recessed portion of the second reinforcing portion 41b. In this embodiment, the joint portion 80 fills the recessed portion of the second reinforcing portion 41b, but it is not necessary for the joint portion 80 to fill the recessed portion of the second reinforcing portion 41b.

[0135] As described above, in the LED lighting fixture 1F and the LED lighting device 3F according to this embodiment, as in the first embodiment, the frame 40 is made of a metal plate formed into a flat shape as a whole, and the frame 40 has at least one protruding reinforcing portion 41 formed linearly along the longitudinal direction of the frame 40.

[0136] This provides the same effects as the LED lighting fixture 1 and the LED lighting device 3 according to the above-described embodiment 1. Specifically, by using frame 40 in which the portion (main board portion) to which substrate 10 is attached is formed in a flat plate shape as a whole, it is possible to ensure a wide wiring space on the rear side of frame 40 and to prevent wire bite of conductive wires arranged on the rear side of frame 40, and even though frame 40 is formed in a flat plate shape as a whole, it is reinforced by reinforcing portion 41, so deformation of frame 40 can be prevented.

[0137] Furthermore, in this embodiment, a joint 80 is provided between the frame 40 and the substrate 10. This improves the adhesion between the frame 40 and the substrate 10, thereby improving the dissipation of heat generated by the LEDs 20.

[0138] Moreover, in this embodiment, the joint 80 is provided in the recessed portion of the second reinforcing portion 41b formed at a position overlapping the substrate 10. This can improve the bonding strength between the frame 40 and the substrate 10.

[0139] Furthermore, by placing the substrate 10 over the recessed portion of the second reinforcing portion 41b, when bonding the substrate 10 to the frame 40 by applying adhesive that forms the joint 80 between the substrate 10 and the frame 40, excess adhesive can be allowed to escape into the recessed portion of the second reinforcing portion 41b, thereby preventing the substrate 10 from floating due to excess adhesive or tilting of the substrate 10 due to uneven distribution of the adhesive causing unevenness in the thickness of the joint 80. In other words, by allowing the adhesive to escape into the recessed portion of the second reinforcing portion 41b, the amount of adhesive that protrudes can be easily controlled.

[0140] In this embodiment, the LED lighting fixture 1 and the LED lighting device 3 shown in FIG. 3 are configured to have the joint 80 added thereto, but the present invention is not limited to this.

[0141] For example, an LED lighting fixture 1G and an LED lighting device 3G shown in Fig. 16 may be configured by adding a joint 80 to the LED lighting fixture 1C and the LED lighting device 3C shown in Fig. 12. That is, in an LED lighting device 3C using a frame 40C in which two first reinforcing portions 41a and one second reinforcing portion 41b are formed as the reinforcing portion 41, a joint 80 may be provided between the frame 40C and the substrate 10.

[0142] Alternatively, a joint 80 may be added to the LED lighting fixture 1D and LED lighting device 3D shown in Fig. 13, as in the LED lighting fixture 1H and LED lighting device 3H shown in Fig. 17. That is, in an LED lighting device 3D using a frame 40D in which only two second reinforcing portions 41b are formed as the reinforcing portion 41, a joint 80 may be provided between the frame 40D and the substrate 10.

[0143] It should be noted that the joint 80 may be added to other embodiments.

[0144] (Variation) The LED lighting fixture and LED lighting device according to the present invention have been described above based on the first and second embodiments, but the present invention is not limited to these first and second embodiments.

[0145] For example, in the above-described first and second embodiments, the folded portion 42 of the frame 40 to 40E is formed by curling the end portion of the frame 40 in the lateral direction toward the rear (toward the ceiling), but this is not limited thereto. Specifically, as in the LED lighting fixture 1I and the LED lighting device 3I shown in FIG. 18 , the folded portion 42I of the frame 40I may be formed by curling the end portion of the frame 40I in the lateral direction toward the front (toward the floor). Note that, although the folded portion 42 of the frame 40 is curled to curve the end portion of the frame 40, this is not limited thereto. For example, as in the LED lighting fixture 1J and the LED lighting device 3J shown in FIG. 19 , the folded portion 42J of the frame 40J may be formed by bending the end portion of the frame 40J in the lateral direction into a U-shaped cross section. In this case, the folded portion 43J may be engaged with an end of the circuit case 4c of the power supply device 4.

[0146] Furthermore, in the first embodiment, the frame 40 includes only the first reinforcing portion 41a and the second reinforcing portion 41b extending in the longitudinal direction (Y-axis direction) of the frame 40 as the reinforcing portion 41, but this is not limited thereto. For example, as in the frame 40K shown in FIG. 20, the reinforcing portion 41K may include a third reinforcing portion 41z extending in the lateral direction (X-axis direction) of the frame 40K in addition to the first reinforcing portion 41a and the second reinforcing portion 41b extending in the longitudinal direction (Y-axis direction) of the frame 40K. This further improves the strength of the frame 40K. Furthermore, by providing the third reinforcing portion 41c, it is possible to restrict not only the movement of the substrate 10 in the width direction but also the movement of the substrate 10 in the longitudinal direction. This further simplifies the positioning of the substrate 10. In particular, when a secondary-side wiring-less structure is adopted, the substrate 10 (LED module) needs to be positioned with high precision. However, by forming the third reinforcing portion 41c, the substrate 10 (LED module) can be positioned with high precision even when a secondary-side wiring-less structure is adopted. Furthermore, by providing the third reinforcing portion 41c to increase the strength of the frame 40K, when the cover member 30 is expanded laterally and fitted into the frame 40K, there is a contact when the cover member 30 is expanded, so the cover member 30 and the frame 40K can be easily assembled. Note that providing the third reinforcing portion 41c to the frame 40K can also be applied to the frames of other embodiments.

[0147] Furthermore, in the first and second embodiments, the cross-sectional shape of the reinforcing portion 41 in the frames 40 to 40E is semicircular, but this is not limiting. For example, the cross-sectional shape of the reinforcing portion 41 may be rectangular as in the frame 40L shown in Fig. 21, or may be triangular as in the frame 40M shown in Fig. 22, or may be trapezoidal as in the frame 40N shown in Fig. 23.

[0148] Furthermore, in the above-described first and second embodiments, the lengths of the first clamping piece 32a and the second clamping piece 32b in the mounting portion 32 of the cover member 30 in the X-axis direction are the same. However, this is not limited to this. For example, as in the mounting portion 32O of the cover member 30O in the LED lighting fixture 1O and the LED lighting device 3O shown in FIG. 24, the floor-side first clamping piece 32a may be longer than the ceiling-side second clamping piece 32b. This allows the cover member 30O to be easily assembled into the frame 40 when it is expanded laterally and fitted into the frame 40, since the expanded cover member 30O makes contact with the first clamping piece 32a. Furthermore, since the floor-side first clamping piece 32a is long, the frame 40 stops when it is inserted from above, making it easy to assemble the cover member 30O into the frame 40. Furthermore, by using a different material (e.g., a white material) for the longer first clamping piece 32a and producing the cover member 30O by two-color molding, it is possible to eliminate the need for white painting on the frame 40 and also reduce light loss due to the cover member 30O.

[0149] Alternatively, as in the mounting portion 32P of the cover member 30P in the LED lighting fixture 1P and LED lighting device 3P shown in Fig. 25, the second clamping piece 32b on the ceiling side may be longer than the first clamping piece 32a on the floor side. This makes it difficult for the cover member 30P to come off even when the cover member 30P is unfolded, thereby preventing the cover member 30P from coming off when the LED lighting fixture 1P is in use. Furthermore, the short first clamping piece 32a on the floor side reduces light loss caused by the cover member 30P.

[0150] Furthermore, in the above-described first and second embodiments, the frame 40 is positioned near the opening of the lighting fixture 2, but this is not limited thereto. For example, as in the LED lighting fixture 1Q and the LED lighting device 3Q shown in FIG. 26 , the frame 40 may be configured to extend into the fixture body 2 by elongating the upright portion 32c of the mounting portion 32Q of the cover member 30Q. This increases the distance between the LEDs 20 arranged on the board 10 attached to the frame 40 and the cover body 31 of the cover member 30Q, thereby suppressing brightness unevenness (grainy appearance) due to the light from the LEDs 20 and improving brightness uniformity in the cover member 30Q. Furthermore, increasing the distance between the LEDs 20 and the cover body 31 suppresses temperature rise in the LEDs 20, thereby improving the luminous efficiency of the LEDs 20.

[0151] Alternatively, as in the LED lighting fixture 1R and LED lighting device 3R shown in Fig. 27, the frame 40 may be configured to be located closer to the floor than the opening of the fixture body 2, for example by configuring the mounting portion 32 of the cover member 30R to be located closer to the floor than the opening of the fixture body 2. This increases the wiring space inside the fixture body 2. Also, by configuring the LED lighting fixture 1R shown in Fig. 27, the width of the frame 40 can be made larger than the width of the opening of the fixture body 2. Furthermore, positioning can be easily performed because the frame 40 can be placed against the opening of the fixture body 2 via the mounting portion 32 of the cover member 30R.

[0152] Furthermore, in the above-described first and second embodiments, the entire substrate 10 is in contact with the frame 40, but this is not limited thereto. Specifically, as in the LED lighting fixture 1S and LED lighting device 3S shown in FIG. 28, an opening 40a may be formed in the frame 40S, and a portion of the second surface 10b of the substrate 10 may be exposed through the opening 40a of the frame 40S. In this case, instead of having the second surface 10b of the substrate 10 in contact with the outer surface of the frame 40S, as in the LED lighting fixture 1T and LED lighting device 3T shown in FIG. 29, the first surface 10a of the substrate 10A may be in contact with the inner surface of the frame 40S. In other words, the substrate 10A may be disposed inside the frame 40S rather than outside it. Furthermore, when the substrate 10A is disposed inside the frame 40S, a separate support member 90 for supporting the substrate 10a may be disposed, as in the LED lighting fixture 1U and LED lighting device 3U shown in FIG. 30. Note that the frame 40S having the opening 40a may have the configuration shown in FIG. 31. 31, three openings 40a are formed, but this is not limiting. Furthermore, the frame 40S may be configured with two separate parts, one on the left and one on the right (in the short direction).

[0153] Furthermore, in the first and second embodiments described above, frame 40 having a substantially I-shaped cross section is used, but this is not limiting. For example, frame 40 may have an L-shaped or M-shaped cross section. Frame 40 may also have a U-shaped or C-shaped cross section, and may have a portion (main plate portion) formed as a flat plate overall, and a pair of side plate portions extending from both ends of this portion in the short direction toward the ceiling.

[0154] Furthermore, in the first embodiment, the LED lighting device 3 is attached to the fixture body 2 by rotating the LED lighting device 3, but this is not limited to this. That is, the LED lighting device 3 may be attached to the fixture body 2 without rotating the LED lighting device 3. Specifically, the LED lighting device 3 may be attached to the fixture body 2 by moving the LED lighting device 3 in the vertical direction so as to translate the LED lighting device 3 toward the fixture body 2 installed on the ceiling, and then pressing the LED lighting device 3 vertically into the recess 2a of the fixture body 2 to fit it in.

[0155] Furthermore, in the above-described first and second embodiments, 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).

[0156] Furthermore, in the above-described first and second embodiments, the cover member 30 has both diffusive and translucent properties, but this is not limiting. For example, a translucent cover that has 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.

[0157] In addition, the present invention also includes forms obtained by making various modifications to the above-mentioned embodiments that a person skilled in the art would think of, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the present invention. [Explanation of symbols]

[0158] 1. 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1O, 1P, 1Q, 1R, 1S, 1T, 1U LED lighting fixtures 2 The instrument body 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3O, 3P, 3Q, 3R, 3S, 3T, 3U LED lighting devices 4 Power supply unit 10, 10A substrate 20 LED 40, 40B, 40C, 40D, 40E, 40I, 40J, 40K, 40L, 40M, 40N, 40O, 40P, 40Q, 40R, 40S, 40T, 40U フレーム 41 Reinforcement Department 41a First Reinforcement Section 41b Second Reinforcement Section 41c Third Reinforcement Section 42, 42I Turnaround Section

Claims

1. a substrate on which an LED is arranged; a long frame to which the substrate is attached; a long cover member attached to the frame so as to cover the LED, the frame has a portion to which the substrate is attached and which is formed in a flat plate shape as a whole; The portion has at least one reinforcing protrusion formed linearly along the longitudinal direction of the frame, the reinforcing portion is configured by a linear convex portion formed on one surface of the portion and a linear concave portion formed on the other surface of the portion at a position opposite to the convex portion, The reinforcing portion is formed in a plurality of parts in the region, the substrate is located between two adjacent reinforcing portions among the plurality of reinforcing portions; LED lighting equipment.

2. The frame is made of a metal plate, The reinforcing portion is formed by performing bead processing on the metal plate. The LED lighting device according to claim 1 .

3. a joint portion that joins the substrate and the frame is provided between the portion and the substrate; The LED lighting device according to claim 1 or 2.

4. At least one of the reinforcing portions is a reinforcing portion formed at a position overlapping the substrate in a thickness direction of the frame. The LED lighting device according to any one of claims 1 to 3.

5. a joining portion for joining the substrate and the frame is provided in a recessed portion of the reinforcing portion formed at a position overlapping the substrate; The LED lighting device according to claim 4.

6. The joint is an adhesive. The LED lighting device according to claim 3 or 5.

7. a power supply for supplying power to the LED; At least a portion of the reinforcing portion is covered by the power supply device. The LED lighting device according to any one of claims 1 to 6.

8. The frame has a folded portion formed by folding back a tip end portion of the part in a width direction in a thickness direction. 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 detachably attached to the fixture body. The LED lighting fixture according to claim 9.

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