LED lighting devices and LED lighting fixtures

Abstract

To provide an LED lighting device that can restrain light emitted from an LED from reaching an extention piece of a cover member.SOLUTION: An LED lighting device 3 is detachably attached to a recess 2a in a fixture body 2 of an LED lighting fixture 1, and includes: a substrate 10 on which an LED 20 is disposed; a frame 40 having a long-sized main plate part 41 with the substrate 10 attached thereto; and a cover member 30 attached to the frame 40 so as to cover the LED 20. The main plate part 41 has a hollow part 41a provided along the longitudinal direction of the main plate part 41, at an edge part in a shorter direction of the main plate part 41. The cover member 30 has an extention piece 33 at least part of which is located at the hollow part 41a. The extention piece 33 extends along the shorter direction of the main plate part 41.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present invention relates to an LED lighting device and an LED lighting fixture including the LED lighting device.

Background Art

[0002] LED lighting fixtures using LEDs (Light Emitting Diodes) are known. For example, as an LED lighting fixture installed on a ceiling, there has been known a lighting fixture including an elongated LED lighting device called a light bar, and an elongated fixture body having a recess to which the LED lighting device is detachably attached (Patent Document 1).

[0003] This type of LED lighting device includes an elongated substrate, a plurality of LEDs mounted on the substrate, an elongated light-transmissive cover member covering the plurality of LEDs, and an elongated frame that supports the substrate and to which the cover member is attached.

[0004] In such an LED lighting device, the frame includes, for example, a main plate portion to which the substrate is attached, and a pair of side plate portions bent from both ends of the main plate portion in the transverse direction (width direction). The cover member also includes a cover main body portion, a pair of attachment portions extending from both width-direction ends of the cover main body portion and attached to the pair of side plate portions of the frame, and a pair of extending pieces extending from each of the pair of attachment portions to press against the width-direction ends of the main plate portion of the frame.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0006] However, in conventional LED lighting devices, the extension piece of the cover member is placed on the widthwise end of the main plate portion of the frame, so some of the light emitted from the LED may reach the extension piece.

[0007] When LED light reaches the extension piece in this way, the LED light is blocked by the extension piece, resulting in the problem that the ends of the LED lighting device in the width direction do not light up evenly.

[0008] Furthermore, since the extension piece is part of a light-transmitting cover member, the light from the LED that reaches the extension piece may also enter the interior of the extension piece. In this case, the LED light that enters the extension piece guides the extension piece and also guides the mounting part connected to the extension piece, which presents the problem of light leakage from the ends of the mounting part, etc.

[0009] This invention has been made in view of the above problems, and aims to provide an LED lighting device and an LED lighting fixture that can suppress light emitted from an LED from reaching an extended piece of a cover member. [Means for solving the problem]

[0010] To achieve the above objective, one embodiment of the LED lighting device according to the present invention is an LED lighting device that is detachably attached to a recess in the fixture body of an LED lighting fixture, comprising a substrate on which LEDs are arranged, a frame having an elongated main plate portion to which the substrate is attached, and a cover member attached to the frame so as to cover the LEDs, wherein the main plate portion has a recess provided along the longitudinal direction of the main plate portion at the short end of the main plate portion, and the cover member has an extended piece to which at least a part is located in the recess, and the extended piece extends along the short direction of the main plate portion.

[0011] Furthermore, one embodiment of the LED lighting fixture according to the present invention comprises the above-mentioned LED lighting device and a fixture body that holds the LED lighting device. [Effects of the Invention]

[0012] This prevents light emitted from the LED from reaching the extended portion of the cover member. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a perspective view of an LED lighting fixture according to Embodiment 1. [Figure 2] Figure 2 is an exploded perspective view of the LED lighting fixture according to Embodiment 1. [Figure 3] Figure 3 is a cross-sectional view of an LED lighting fixture according to Embodiment 1. [Figure 4] Figure 4 is a perspective view of the LED lighting device according to Embodiment 1, as seen from the cover member side. [Figure 5] Figure 5 is a perspective view of the LED lighting device according to Embodiment 1, as seen from the rear. [Figure 6] Figure 6 is a cross-sectional perspective view of the LED lighting device according to Embodiment 1. [Figure 7] Figure 7 is an exploded perspective view of the LED lighting device according to Embodiment 1. [Figure 8] Figure 8 is a cross-sectional view of an LED lighting device of a comparative example. [Figure 9] Figure 9 is a cross-sectional view of the LED lighting device according to Embodiment 1. [Figure 10] Figure 10 is a cross-sectional view of an LED lighting device according to a modified example 1 of Embodiment 1. [Figure 11] Figure 11 is a cross-sectional view of an LED lighting device according to a modified example 2 of Embodiment 1. [Figure 12] Figure 12 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to Embodiment 2. [Figure 13] Figure 13 is a cross-sectional view of an LED lighting device according to a modified example 1 of Embodiment 2. [Figure 14] Figure 14 is a cross-sectional view of an LED lighting device according to a modified example 2 of Embodiment 2. [Figure 15] Figure 15 is a cross-sectional view of an LED lighting device according to a modified example 3 of Embodiment 2. [Figure 16] Fig. 16 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 3. [Figure 17] Fig. 17 is a cross-sectional view of an LED lighting device according to a modification of Embodiment 3. [Figure 18] Fig. 18 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 4. [Figure 19] Fig. 19 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 5. [Figure 20] Fig. 20 is a cross-sectional view of an LED lighting device according to First Modification of Embodiment 5. [Figure 21] Fig. 21 is a cross-sectional view of an LED lighting device according to Second Modification of Embodiment 5. [Figure 22] Fig. 22 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 6. [Figure 23] Fig. 23 is a cross-sectional view of an LED lighting device according to a modification of Embodiment 6. [Figure 24] Fig. 24 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 7. [Figure 25] Fig. 25 is a cross-sectional view of an LED lighting device according to First Modification of Embodiment 7. [Figure 26] Fig. 26 is a cross-sectional view of an LED lighting device according to Second Modification of Embodiment 7. [Figure 27] Fig. 27 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 8. [Figure 28] Fig. 28 is a cross-sectional view of an LED lighting device used in the LED lighting fixture according to Embodiment 9. [Figure 29] Fig. 29 is a cross-sectional view of an LED lighting device according to First Modification of Embodiment 9. [Figure 30] Fig. 30 is a cross-sectional view of an LED lighting device according to Second Modification of Embodiment 9. [Figure 31]Figure 31 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to Embodiment 10. [Figure 32] Figure 32 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to Embodiment 11. [Figure 33] Figure 33 is a cross-sectional view of an LED lighting fixture according to Embodiment 11. [Figure 34] Figure 34 is a cross-sectional view of an LED lighting device used in an LED lighting fixture according to Embodiment 12. [Figure 35] Figure 35 is a cross-sectional view of an LED lighting device according to Modification 1. [Figure 36] Figure 36 is a cross-sectional view of an LED lighting device according to modified example 2. [Figure 37] Figure 37 is a cross-sectional view of an LED lighting device according to Modification 3. [Figure 38] Figure 38 is a perspective view showing the configuration of the frame used in the LED lighting device according to Modifications 1 to 3. [Figure 39] Figure 39 is a cross-sectional view of an LED lighting device according to Modification 4. [Modes for carrying out the invention]

[0014] The embodiments of the present invention will be described below with reference to the drawings. The embodiments described below are all specific examples of the present invention. Therefore, the numerical values, components, arrangement and connection configurations of components, as well as the processes and their sequences shown in the following embodiments, are examples only and are not intended to limit the present invention. Accordingly, any components in the following embodiments that are not described in the independent claims representing the highest-level concept of the present invention will be described as optional components.

[0015] Note that each figure is a schematic diagram and not necessarily a strictly accurate representation. Also, in each figure, substantially identical components are denoted by the same reference numerals, and redundant explanations are omitted or simplified. In each figure, the X, Y, and Z axes represent the three axes of a three-dimensional Cartesian coordinate system. In this embodiment, the Z-axis direction is defined as the vertical direction, and the direction perpendicular to the Z-axis (parallel to the XY plane) is defined as the horizontal direction. The X and Y axes are orthogonal to each other and both are orthogonal to the Z-axis. Note that in this specification, the terms "up" and "down" do not necessarily refer to the upward direction (vertically upward) and the downward direction (vertically downward) in absolute spatial perception.

[0016] (Embodiment 1) First, the configuration of the LED lighting fixture 1 according to Embodiment 1 will be explained using Figures 1 to 3. Figure 1 is a perspective view of the LED lighting fixture 1 according to Embodiment 1. Figure 2 is an exploded perspective view of the same LED lighting fixture 1. Figure 3 is a cross-sectional view of the same LED lighting fixture 1. Note that Figure 3 shows a cross-section when the LED lighting fixture 1 is cut by a plane parallel to the short side.

[0017] As shown in Figures 1 to 3, the LED lighting fixture 1 according to this embodiment comprises a fixture body 2 and an LED lighting device 3 attached to the fixture body 2.

[0018] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is located in a predetermined location within the building. It is installed in the specified location. In this embodiment, the LED lighting fixture 1 is a ceiling-mounted lighting fixture. Therefore, the fixture body 2 is attached to the ceiling of the room using bolts or the like.

[0019] 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 or other processes applied to the metal plate. As shown in Figure 2, the fixture body 2 is provided with a recess 2a having a rectangular opening. The recess 2a is provided in a long shape along the longitudinal direction of the fixture body 2. The recess 2a is a storage section for housing the LED lighting device 3 and is provided over substantially the entire length of the fixture body 2. Furthermore, as shown in Figures 2 and 3, on both sides of the recess 2a in the width direction of the fixture body 2, there are inclined surfaces 2b that extend from the opening edge of the recess 2a and slope upward (towards the ceiling) as they extend outwards.

[0020] The LED lighting device 3 is a light source unit that uses LEDs 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 removed from the recess 2a. The LED lighting device 3 and the fixture body 2 can be fixed together by hooking and locking mounting members such as hook fittings and kick springs provided on the LED lighting device 3 to the fixture body 2.

[0021] As shown in Figure 3, the LED lighting device 3 emits light using power supplied from a power supply unit 4 housed in the fixture body 2. The power supply unit 4 is an example of an electrical functional component and supplies power to the LED lighting device 3. The power supply unit 4 is located on the rear side of the LED lighting device 3. Specifically, the power supply unit 4 is located in a recess 2a of the fixture body 2. In this embodiment, the power supply unit 4 is attached to the LED lighting device 3 as part of the LED lighting device 3 and is integrated with the LED lighting device 3. However, the power supply unit 4 may not be integrated with the LED lighting device 3 and may be located separately in the fixture body 2.

[0022] The power supply unit 4 consists of a power supply circuit that generates power to illuminate the LED lighting device 3. For example, the power supply unit 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 unit 4 converts AC power from an external power source such as a commercial power supply into DC power at a predetermined level by rectifying, smoothing, and stepping down the voltage, and supplies the DC power to the LED lighting device 3.

[0023] AC power is supplied to the power supply unit 4 via a power terminal block 8 (see Figure 2), to which power lines are connected, which are inserted from the ceiling through a through-hole in the fixture body 2 and pulled out into a recess 2a in the fixture body 2. The power terminal block 8 is installed in the recess 2a of the fixture body 2.

[0024] Next, the detailed structure of the LED lighting device 3 will be described using Figures 4 to 7, with reference to Figures 1 to 3. Figure 4 is a perspective view of the LED lighting device 3 according to Embodiment 1, as seen from the cover member 30 side, and Figure 5 is a perspective view of the same LED lighting device 3 as seen from the back side. Figure 6 is a cross-sectional perspective view of the same LED lighting device 3. Figure 7 is an exploded perspective view of the same LED lighting device 3.

[0025] As shown in Figures 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.

[0026] As shown in Figures 3, 6, and 7, the LED lighting device 3 comprises a substrate 10, LEDs 20 arranged on the substrate 10, a cover member 30 covering the LEDs 20, a frame 40 supporting the substrate 10, and an end cap 50.

[0027] The substrate 10 is a mounting substrate for mounting the LED 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 substrate 10 may be approximately the same length as the total length of the frame 40 in the longitudinal direction, or multiple substrates may be arranged along the longitudinal direction of the frame 40. As shown in Figure 7, in this embodiment, two substrates 10 are arranged along the longitudinal direction of the frame 40.

[0028] As shown in Figures 6 and 7, the substrate 10 has a first surface 10a and a second surface 10b that faces away from the first surface 10a. The first surface 10a of the substrate 10 is the front surface on which the LED 20 is mounted. On the other hand, the second surface 10b of the substrate 10 is the back surface that faces the frame 40. In this embodiment, the second surface 10b of the substrate 10 is in contact with the frame 40.

[0029] The substrate 10 is, for example, a printed circuit board (PCB) on which metal wiring is formed in a predetermined pattern. A resist made of an insulating resin material may be formed on the surface of the substrate 10 to protect the wiring and ensure dielectric strength. The substrate 10 may be a single-sided PCB with wiring formed only on the first surface 10a on which the LED 20 is mounted, or a double-sided PCB with wiring formed on both the first surface 10a and the second surface 10b.

[0030] The substrates used to make up the substrate 10 include resin substrates made of insulating resin materials, ceramic substrates made of sintered bodies of ceramic materials such as alumina, and metal base substrates obtained by applying an insulating coating to the surface of a metal substrate made of a metal material such as aluminum or copper.

[0031] If the substrate 10 is made of a resin substrate, the resin substrate can be, for example, a glass epoxy substrate (CEM-3, FR-4, etc.) made of glass fibers 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 or the like. Furthermore, the substrate 10 may be a rigid substrate or a flexible substrate in the form of a film.

[0032] As shown in Figures 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 straight line along the longitudinal direction (Y-axis direction) of the substrate 10 at predetermined intervals. Specifically, the plurality of LEDs 20 are mounted along substantially the entire length in the longitudinal direction of the cover member 30 and the frame 40. Note that the plurality of LEDs 20 may be mounted in multiple rows along the longitudinal direction of the substrate 10, rather than in a single row.

[0033] LED20 is an example of a light-emitting element. In this embodiment, each of the multiple LEDs 20 is an individually packaged SMD structure LED element (LED light source). In this case, each LED 20 comprises a white container (package) made of resin or ceramic, an LED chip (bare chip) placed inside the container, and a sealing member that seals the LED chip. In this embodiment, 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 energized is used as the LED chip, and a silicone resin containing a yellow phosphor such as YAG (phosphor-containing resin) is used as the sealing member that fills the container.

[0034] Multiple LEDs 20 are covered by a cover member 30. Specifically, all LEDs 20 are covered by the cover member 30. The cover member 30 is an example of a light-transmitting cover, and transmits light emitted from the LEDs 20. In this embodiment, the cover member 30 is not only light-transmitting but also a diffuser cover. Therefore, the light from the LEDs 20 incident on the cover member 30 is diffused (scattered) by the cover member 30 and then transmitted through the cover member 30.

[0035] As shown in Figures 3 and 6, the cover member 30 covers the substrate 10. Specifically, the cover member 30 is positioned opposite the first surface 10a of the substrate 10 so as to cover the multiple LEDs 20.

[0036] In this embodiment, the cover member 30 covers the entire substrate 10 on which the LED 20 is arranged. As shown in Figures 5 and 6, the cover member 30 further covers the entire frame 40 on which the substrate 10 is arranged. Therefore, the cover member 30 is formed in an elongated shape in the Y-axis direction, similar to the substrate 10 and the frame 40.

[0037] The cover member 30 is attached to the frame 40. The cover member 30 and the frame 40 form a cylindrical body, and the circuit board 10 and the multiple LEDs 20 mounted on the circuit board 10 are housed inside this cylindrical body.

[0038] The cover member 30 is attached to the frame 40 so as to cover the substrate 10 and the LED 20. As shown in Figures 3 and 6, the cover member 30 has a cover body portion 31, a mounting portion 32 connected to the cover body portion 31, and an extension piece 33 connected to the mounting portion 32.

[0039] As shown in Figure 7, the cover body 31 is elongated in the Y-axis direction and formed in a trough shape. The cover body 31 is, for example, a flattened, substantially semi-cylindrical shape. Therefore, the cover body 31 has an elongated rectangular open end face that extends in the Y-axis direction. Furthermore, when cut along the X-axis direction, the cross-sectional shape of the cover body 31 has a curved shape that is substantially curved in an arc.

[0040] As shown in Figures 3 and 6, the cover body portion 31 includes protruding portions 31a that project outward in the width direction from the mounting portion 32. The protruding portions 31a are formed at both ends of the cover body portion 31 in the short direction (width direction). Each protruding portion 31a does not have a recess on the side opposite to the frame 40. In other words, no recess is formed on the ceiling side of each protruding portion 31a. Specifically, each protruding portion 31a is formed in a V-shape in the XZ cross section, and the ceiling-side portion of the protruding portion 31a is formed to be on the same plane as the extension piece 33 via the mounting portion 32.

[0041] The mounting portion 32 is the part that is attached to the frame 40. Specifically, the mounting portion 32 is attached to the side plate portion 42 of the frame 40. Furthermore, the mounting portion 32 is an extended portion that extends from the cover body portion 31 toward the frame 40.

[0042] The mounting portion 32 is formed as a pair of legs that are erected on the cover body 31 from each of the short sides (X-axis direction) of the cover body 31. In this embodiment, the length of the pair of mounting portions 32 in the Z-axis direction is the same. As shown in Figure 7, each of the pair of mounting portions 32 is formed in an elongated shape along the Y-axis direction. The lengths of the pair of mounting portions 32 in the Y-axis direction are also the same.

[0043] As shown in Figures 6 and 7, a recess 32a is formed on the inside in the width direction (X-axis direction) at the tip of each of the pair of mounting portions 32. The bent portion 42a provided at the tip of the side plate portion 42 of the frame 40 is fitted into this recess 32a, thereby locking 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 together. As a result, the pair of mounting portions 32 of the cover member 30 embrace the frame 40. It is fixed and held at 0.

[0044] As shown in Figures 3 and 6, the extension piece 33 is an extension that extends to the recessed portion 41a of the frame 40. Specifically, the extension piece 33 extends from the mounting portion 32 along the shorter direction (X-axis direction) of the cover member 30. Therefore, the extension piece 33 is located inside 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-shaped piece with a constant thickness.

[0045] At least a portion of the extension piece 33 is located in the recess 41a. In this embodiment, the entire extension piece 33 is located in the recess 41a. The extension piece 33 is fitted into the recess 41a.

[0046] Furthermore, the portion of the extension piece 33 located in the recessed portion 41a is positioned behind the light-emitting surface of the LED 20. In other words, the portion of the extension piece 33 located in the recessed portion 41a is positioned on the ceiling side of the light-emitting surface of the LED 20 and does not protrude towards the floor side of the light-emitting surface of the LED 20. In this embodiment, the extension piece 33 is positioned on the ceiling side of the outer surface of the portion of the main plate portion 41 where the recessed portion 41a is not formed. In other words, the entire extension piece 33 is housed within the recessed portion 41a so as not to protrude from it.

[0047] The extension piece 33 functions as a stopper that presses down on 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-emitting side (floor side) of the LED 20. In this embodiment, the extension piece 33 prevents the frame 40 from shifting toward the floor by pressing down on the main plate portion 41 from the floor side (light-emitting side of the LED 20) toward the ceiling side. Specifically, the extension piece 33 presses down on the recessed portion 41a provided in the main plate portion 41. Therefore, the extension piece 33 is in contact with the recessed portion 41a. In this embodiment, the extension piece 33 is in contact with the recessed portion 41a while pressing it down. By attaching the cover member 30 to the frame 40, the extension piece 33 is in a state of pressing down on the recessed portion 41a.

[0048] Furthermore, the extension piece 33 also has the function of preventing insects from entering the space between the cover body portion 31 of the cover member 30 and the main plate portion 41 of the frame 40. In other words, by providing the extension piece 33 so as to press down on the main plate portion 41, a labyrinthine structure can be formed in the path through which insects enter when they enter through the gap between the mounting portion 32 of the cover member 30 and the side plate portion 42 of the frame 40, thereby preventing insects from entering the interior.

[0049] Furthermore, the extension pieces 33 are erected from each of the pair of mounting parts 32. In other words, the cover member 30 has a pair of extension pieces 33. In this embodiment, the length of the pair of extension pieces 33 in the X-axis direction is the same. As shown in Figure 7, each of the pair of extension pieces 33 is formed in an elongated shape along the Y-axis direction. The lengths of the pair of extension pieces 33 in the Y-axis direction are also the same. For example, the pair of extension pieces 33 are the same shape, but are not limited to this. Also, the pair of extension pieces 33 are provided at the same height position in the Z-axis direction.

[0050] 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 can be a milky white cover member in which a light diffusing material is dispersed inside. Such a cover member 30 can be manufactured by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. As the light diffusing material, light-reflective fine particles such as silica particles can be used.

[0051] Furthermore, the cover member 30 may be constructed 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 the light-diffusing material inside. Alternatively, the cover member 30 may be configured to have light-diffusing properties by applying a diffusion process rather than using a light-diffusing material. For example, the cover member 30 may be configured to have light-diffusing properties by forming minute irregularities on the surface of the transparent cover by applying a surface treatment such as texturing, or by printing a dot pattern on the surface of the transparent cover. Even when the cover member 30 is subjected to a diffusion process, it may contain an additional light-diffusing material to further enhance its light-diffusing properties.

[0052] In this embodiment, the cover body portion 31, the mounting portion 32, and the extension piece 33 constituting the cover member 30 are formed integrally. Therefore, the cover body portion 31, the mounting portion 32, and the extension piece 33 are made of the same material.

[0053] 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.

[0054] As an example, the frame 40 is a sheet metal frame. The frame 40 is formed into a predetermined shape by rolling or pressing a sheet metal (metal plate) made of, for example, SPCC (Steel Plate Cold Commercial). In this embodiment, the frame 40 is formed such that the cross-section (XZ cross-section) when cut along the X-axis is approximately U-shaped. Also, the frame 40 is formed in an elongated shape in the Y-axis direction, similar to the substrate 10 and the device body 2. The thickness of the metal plate constituting the frame 40 is, for example, 0.2 mm to 2 mm, and in this embodiment it is 0.5 mm.

[0055] As shown in Figures 3 to 7, the frame 40 has a plate-shaped main plate portion 41 to which the substrate 10 is attached, and a pair of plate-shaped side plate portions 42 to which the frame 40 is attached. As shown in Figure 7, the main plate portion 41 and the pair of side plate portions 42 are elongated and extend in the Y-axis direction.

[0056] The main plate portion 41 is the main body of the frame 40, and as shown in Figures 3 and 6, the substrate 10 is placed on the main plate portion 41. In other words, the main plate portion 41 supports the substrate 10. In this embodiment, the substrate 10 and the main plate portion 41 are in contact.

[0057] The main plate portion 41 has a recessed portion 41a. The recessed portion 41a is shaped so that the surface of the main plate portion 41 on the side of the LED 20 light-emitting surface is recessed. Specifically, the recessed portion 41a is formed by recessing a part of the main plate portion 41 toward the ceiling. In this case, the recessed portion 41a can be formed, for example, by pressing a part of the main plate portion 41 to recess toward the ceiling. Therefore, the plate thickness at the bottom of the recessed portion 41a is the same as the plate thickness of the part of the main plate portion 41 where the recessed portion 41a is not formed.

[0058] The recessed portion 41a is provided at the end of the main plate portion 41 in the short direction (X-axis direction). Specifically, in this embodiment, the recessed portion 41a is provided at each of the short ends of the main plate portion 41. Specifically, each recessed portion 41a is formed at the connection point between the main plate portion 41 and the side plate portion 42 so as to eliminate the corner between the main plate portion 41 and the side plate portion 42.

[0059] Furthermore, the recessed portion 41a is provided along the longitudinal direction (Y-axis direction) of the main plate portion 41. In this embodiment, the recessed portion 41a is provided along the entire length of the main plate portion 41 in the longitudinal direction. For example, the width of the recessed portion 41a is greater than its depth, but this is not limited to this. Also, the two recessed portions 41a are the same in shape and size, but this is not limited to this. In other words, the depth and width of the two recessed portions 41a are the same, but this is not limited to this.

[0060] As described above, the extension piece 33 of the cover member 30 is located in the recessed portion 41a. Specifically, the extension piece 33 is housed in the recessed portion 41a. Furthermore, the recessed portion 41a is pressed towards the ceiling by the pressure from the extension piece 33. In other words, the main plate portion 41 of the frame 40 is pressed towards the ceiling by the extension piece 33.

[0061] As shown in Figure 7, the main plate portion 41 has claw portions 43 formed by cutting and bending a part of the sheet metal frame 40, and the substrate 10 placed on the main plate portion 41 is fixed to the main plate portion 41 by engaging with these claw portions 43. In addition, the main plate portion 41 is provided with through holes through which conductive wires for electrically connecting the wiring of the substrate 10 and the power supply unit 4 are inserted.

[0062] The pair of side plates 42 constitute the side surfaces of the frame 40. Each of the pair of side plates 42 extends in the Z-axis direction from both ends of the main plate 41 in the short direction (X-axis direction). The pair of side plates 42 are formed to stand upright on the main plate 41 from each end of the main plate 41 in the short direction (X-axis direction). For example, the pair of side plates 42 and the main plate 41 can be formed by bending sheet metal at approximately 90 degrees.

[0063] A mounting portion 32 for the cover member 30 is attached to each of the pair of side plate portions 42. Specifically, as shown in Figures 6 and 7, the tip of each side plate portion 42 is provided with a bent portion 42a that is curled outwards, and the cover member 30 can be fixed to the frame 40 by snapping the bent portion 42a of the side plate portion 42 into a recess 32a provided in the mounting portion 32 of the cover member 30.

[0064] A long cylindrical body is formed by fixing the cover member 30 and the frame 40 together. End caps 50 are attached to each of the longitudinal ends of the cylindrical body formed by the cover member 30 and the frame 40.

[0065] In this embodiment, the end cap 50 is provided to seal the open end of the cylindrical body composed of 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 composed of the cover member 30 and the frame 40, thereby closing the open end of the cylindrical body. This prevents dust, insects, etc. from entering the inside of the cylindrical body composed of the cover member 30 and the frame 40. Note that the end cap 50 does not completely seal the open end of the cylindrical body composed of the cover member 30 and the frame 40, and there may be a small gap between the end cap 50 and the frame 40.

[0066] The end caps 50 are provided at each of the 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.

[0067] The end cap 50 is made of a resin material. The end cap 50 may or may not be light-transmitting. A light-transmitting end cap 50 is made of a transparent resin material such as polycarbonate or acrylic. The end cap 50 may also be light-transmitting and diffusive. In this case, the end cap 50 may be made of the same material as the cover member 30, or it may be made of a different material from the cover member 30.

[0068] The LED lighting device 3, configured in this way, is housed in a 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 the hook fittings 5 ​​and elastic retaining members 6 shown in Figures 4 and 5. The hook fittings 5 ​​and elastic retaining members 6 are fixed to the frame 40. Specifically, the sheet metal hook fittings 5 ​​are fixed to the frame 40 by screws. The elastic retaining members 6 are, for example, springs such as kick springs, and are fixed to the frame 40 by fixing fittings fixed to the frame 40. The hook fittings 5 ​​are fixed to one end of the frame 40 in the short direction, and the elastic retaining members 6 are fixed to the other end of the frame 40 in the short direction. As an example, two of each of the hook fittings 5 ​​and elastic retaining members 6 are provided, but this is not limited to this. Also, the hook fittings 5 ​​and elastic retaining members 6 are provided at positions facing each other in the short direction of the frame 40, but this is not limited to this.

[0069] When attaching the LED lighting device 3 to the fixture body 2, the LED lighting device 3 is suspended in a cantilevered state by hooking the hook fitting 5 into a slit formed in the fixture body 2. The LED lighting device 3 is then rotated using the hook fitting 5 as a pivot point, pushing it up into the recess 2a of the fixture body 2, and the elastic holding member 6 is locked to the receiving fitting provided on the fixture body 2. This allows the LED lighting device 3 to be attached to the fixture body 2.

[0070] Next, the effects of the LED lighting device 3 according to this embodiment will be explained using Figures 8 and 9. Figure 8 is a cross-sectional view of the comparative example LED lighting device 3X. Figure 9 is a cross-sectional view of the LED lighting device 3 according to Embodiment 1 described above. In Figures 8 and 9, the straight lines of the arrows indicate a portion of the light emitted from the LED 20.

[0071] The comparative example LED lighting device 3X shown in Figure 8 differs from the LED lighting device 3 according to this embodiment in the configuration of the cover member 30X and the frame 40X. Specifically, in the comparative example LED lighting device 3X, the cover member 30X has a cover body portion 31X, a pair of mounting portions 32X, and a pair of extension pieces 33X, similar to the cover member 30 of the LED lighting device 3 according to this embodiment. The frame 40X has a main plate portion 41X and a pair of side plate portions 42, similar to the frame 40 of the LED lighting device 3 according to this embodiment. However, in the comparative example LED lighting device 3X, the main plate portion 41X of the frame 40X does not have a recessed portion. Therefore, in the comparative example LED lighting device 3X, the pair of extension pieces 33X of the cover member 30X are not located in the recessed portion of the main plate portion 41X but are placed on the ends of the main plate portion 41X in the short direction (X-axis direction).

[0072] Therefore, as shown in Figure 8, in the comparative example LED lighting device 3X, some of the light emitted from the LED 20 may reach the extension piece 33X. Specifically, some of the light emitted from the LED 20 at a low angle may reach the extension piece 33X.

[0073] As a result, some of the light emitted from the LED 20 is blocked by the extension piece 33X, causing the end of the LED lighting device 3X in the shorter direction (X-axis direction) to not light up properly. For example, a difference in brightness may occur in the light-emitting surface of the short end of the cover member 30X in the longitudinal direction (Y-axis direction), appearing as streaks.

[0074] Furthermore, since the extension piece 33X is part of the light-transmitting cover member 30X, the light from the LED 20 that reaches the extension piece 33X will enter the interior of the extension piece 33X. In this case, the light from the LED 20 that enters the extension piece 33X will guide the extension piece 33X and the mounting part 32X connected to the extension piece 33X, and light may leak from the ends of the mounting part 32X, etc. As a result, the desired light distribution and the desired lighting atmosphere may not be obtained.

[0075] In contrast, as shown in Figure 9, in the LED lighting device 3 according to this embodiment, a recessed portion 41a is provided in the main plate portion 41 of the frame 40, and the extended piece 33 of the cover member 30 is located in that recessed portion 41a.

[0076] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33. In particular, in this embodiment, the portion located at the recessed portion 41a of the extension piece 33 is positioned behind the light-emitting surface of the LED 20. This further suppresses the light emitted from the LED 20 from reaching the extension piece 33. Specifically, in this embodiment, the light emitted from the LED 20 does not reach the extension piece 33. For example, even if a portion of the light emitted from the LED 20 travels almost parallel to the X-axis direction, that light does not reach the extension piece 33.

[0077] As a result, the light from the LED 20 is not blocked by the extension piece 33, which suppresses the occurrence of a difference in brightness on the light-emitting surface at the short end of the cover member 30. Therefore, compared to the comparative example LED lighting device 3X, the short end (X-axis direction) of the LED lighting device 3 can be illuminated more evenly.

[0078] Furthermore, since the light from the LED 20 does not reach the extension piece 33, the light from the LED 20 does not enter the extension piece 33. As a result, the light from the LED 20 is guided through the extension piece 33 and the mounting part 32, preventing leakage from the ends of the mounting part 32, etc. Therefore, the desired light distribution and desired lighting atmosphere can be obtained.

[0079] Furthermore, in the LED lighting device 3 of this embodiment, the recessed portion 41a of the frame 40 is provided at each of the short-side (X-axis direction) ends of the main plate portion 41. In other words, the main plate portion 41 is provided with a pair of recessed portions 41a on either side of the LED 20. And each of the pair of extended pieces 33 of the cover member 30 is located at each of the pair of recessed portions 41a.

[0080] This configuration prevents light emitted from the LED 20 on both sides of the frame 40 in the short direction from reaching the extension piece 33. In other words, it prevents light from the LED 20 from reaching each of the pair of extension pieces 33. This prevents differences in brightness from occurring on the light-emitting surfaces at both ends of the cover member 30 in the short direction. In other words, it prevents differences in brightness from occurring across the entire cover member 30. Therefore, the entire LED lighting device 3 can be illuminated evenly.

[0081] Furthermore, since the light from the LED 20 does not reach each of the pair of extension pieces 33, the light from the LED 20 does not enter either of the pair of extension pieces 33. As a result, the light from the LED 20 is guided through the pair of extension pieces 33 and does not leak from the ends of the pair of mounting parts 32, etc. Therefore, the desired light distribution and desired lighting atmosphere can be easily obtained.

[0082] Furthermore, in the LED lighting device 3 of this embodiment, the extended piece 33 is in contact with the recessed portion 41a. Specifically, the extended piece 33 is in contact with the recessed portion 41a while pressing against it.

[0083] This configuration allows the extension piece 33 to press down on the main plate portion 41, thereby suppressing displacement of the frame 40. In particular, it can suppress displacement of the frame 40 in the Z-axis direction.

[0084] Furthermore, in the LED lighting device 3 of this embodiment, the cover body portion 31 of the cover member 30 includes a protruding portion 31a that protrudes outward from the mounting portion 32, and this protruding portion 31a does not have a recess that is recessed on the side opposite to the frame 40.

[0085] If a recess were formed on the part of the protruding portion 31a opposite to the frame 40, insect carcasses and foreign matter could accumulate in this recess, potentially causing the shorter end of the cover body 31 to not shine brightly. In contrast, in this embodiment, since no recess is formed on the part of the protruding portion 31a opposite to the frame 40, insect carcasses and foreign matter will not accumulate at the shorter end of the cover body 31. As a result, the shorter end of the cover body 31 can also be made to shine brightly.

[0086] In this embodiment, the protruding portion 31a of the cover body portion 31 did not have a recess on the side opposite to the frame 40, but this is not limited to this. For example, as in the LED lighting device 3A shown in Figure 10, the protruding portion 31aA of the cover body portion 31A of the cover member 30A may have a recess 31b on the side opposite to the frame 40. This is also true in subsequent embodiments. In other words, in the subsequent embodiments 2 to 12, either the cover member 30 or the cover member 30A may be used.

[0087] Furthermore, in this embodiment, the cover member 30 and the frame 40 were fixed by fitting the bent portion 42a provided on the side plate portion 42 of the frame 40 into the recess 32a provided on the mounting portion 32 of the cover member 30, but this is not limited to this. For example, as shown in Figure 11, an LED lighting device 3B may be used, which has a cover member 30B having a mounting portion 32B without a recess, or a frame 40B may be used, which has a side plate portion 42B without a bent portion. In other words, the mounting portion 32B of the cover member 30B does not have to be a structure that embraces the frame 40B. In this case, the cover member 30B and the frame 40B are fixed together by screws or the like.

[0088] (Embodiment 2) Next, Embodiment 2 will be described using Figure 12. Figure 12 is a cross-sectional view of the LED lighting device 3C used in the LED lighting fixture according to Embodiment 2.

[0089] The LED lighting device 3C according to this embodiment differs from the LED lighting device 3A according to Embodiment 1 in the configuration of the frame 40C. Specifically, the frame 40C in this embodiment has a structure in which the main plate portion 41C has a protruding portion 41b.

[0090] The protrusions 41b protrude from both sides of the portion of the main plate portion 41C to which the substrate 10 is attached, towards the light-emitting side of the LED 20. In other words, a pair of protrusions 41b are provided so as to sandwich the substrate 10. Each of the pair of protrusions 41b protrudes toward the cover body portion 31A of the cover member 30A. In this embodiment, each protrusion 41b is convex such that its cross-sectional shape in the XZ cross section is rectangular, and extends along the Y axis direction. As an example, each protrusion 41b is formed along the entire length in the longitudinal direction of the main plate portion 41C. Note that the pair of protrusions 41b are the same shape as each other, but are not limited to this.

[0091] The protruding portion 41b is formed by providing a recess 41c in the main plate portion 41C. The substrate 10 is placed in the recess 41c. In other words, the recess 41c is the substrate mounting portion in the main plate portion 41C. The recess 41c can be formed by press working, similar to the indentation portion 41a. In this embodiment, the depth of the recess 41c is the same as the depth of the indentation portion 41a. That is, the bottom surface of the recess 41c and the bottom surface of the indentation portion 41a are at the same height in the Z-axis direction. The depth of the recess 41c is less than or equal to the thickness of the substrate 10. Therefore, the substrate 10 is housed in the recess 41c without protruding from it. In this embodiment, the protruding portion 41b is formed by providing a recess 41c in the main plate portion 41C, but this is not the only way. In other words, the protruding portion 41b may be formed without providing a recess 41c in the main plate portion 41C.

[0092] The width (length in the X-axis direction) of the recess 41c formed in the main plate portion 41C is the same as the width of the substrate 10. This prevents the substrate 10 from moving in the width direction by the pair of protrusions 41b formed on both sides of the recess 41c. In other words, the position of the substrate 10 in the width direction can be restricted by the pair of protrusions 41b. Note that the width of the recess 41c and the width of the substrate 10 do not have to be the same. That is, there may be a gap between the side wall surface of the protrusion 41b and the side surface of the substrate 10.

[0093] In this embodiment as well, the extension piece 33 of the cover member 30A is located in the recessed portion 41a of the main plate portion 41C. In this case, the portion of the extension piece 33 located in the recessed portion 41a (the entire extension piece 33 in this embodiment) is located lower than the protruding portion 41b. In other words, the thickness of the extension piece 33 is less than the height of the protruding portion 41b.

[0094] In this embodiment, the cover member 30A shown in Figure 10 is used, but the cover member 30 shown in Figure 6 may also be used. In other words, in this embodiment, the cover member 30A has a recess 31b in the protruding portion 31aA of the cover body 31A, but the cover member 30 does not have a recess in the protruding portion 31a of the cover body 31.

[0095] Furthermore, with respect to components other than the frame 40C, the LED lighting device 3C in this embodiment is the same as the LED lighting device 3A in the first embodiment described above.

[0096] As described above, in the LED lighting device 3C according to this embodiment, the extended piece 33 of the cover member 30A is located in the recessed portion 41a provided in the main plate portion 41C of the frame 40C, similar to the first embodiment.

[0097] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0098] Furthermore, in the LED lighting device 3C according to this embodiment, a protrusion 41b is provided on the main plate portion 41C of the frame 40C, and the portion of the extension piece 33 of the cover member 30A located at the recessed portion 41a is at a lower position than the protrusion 41b.

[0099] This configuration further suppresses the light emitted from the LED 20 from reaching the extension piece 33.

[0100] In this embodiment, the side wall surface of the protruding portion 41b of the frame 40C was perpendicular to the bottom surface of the recess 41c, but this is not limited to this. For example, as in the LED lighting device 3Cα shown in Figure 13, the side wall surface of the protruding portion 41bα of the frame 40Cα may be inclined with respect to the bottom surface of the recess 41c. In this case, in Figure 13, only the side wall surface of the protruding portion 41bα on the substrate 10 side is inclined, but the side wall surface on the extension piece 33 side may also be inclined, or both side wall surfaces of the protruding portion 41bα may be inclined.

[0101] Furthermore, in this embodiment, the main plate portion 41C of the frame 40C was formed such that the bottom surface of the recessed portion 41a and the bottom surface of the recessed portion 41c were at the same height, but this is not limited to this. For example, as in the LED lighting device 3Cβ shown in Figure 14, the main plate portion 41Cβ of the frame 40Cβ may be formed such that the bottom surface of the recessed portion 41a and the bottom surface of the recessed portion 41c are at different heights. In other words, the depth of the recessed portion 41a and the depth of the recessed portion 41c may be different. In this case, as shown in Figure 14, it is preferable that the inclined portion of the side wall surface of the protruding portion 41bβ on the substrate 10 side be made longer, so that the bottom surface of the recessed portion 41c is further away from the cover body portion 31A than the bottom surface of the recessed portion 41a. In other words, it is preferable that the depth of the recessed portion 41c be deeper than the depth of the recessed portion 41a. This further suppresses the light emitted from the LED 20 from reaching the extension piece 33.

[0102] Furthermore, in this embodiment, the protrusion 41b provided on the main plate portion 41C was formed to have a rectangular cross-sectional shape in the XZ cross-section, but this is not limited to this. For example, as in the LED lighting device 3Cγ shown in Figure 15, the protrusion 41bγ provided on the main plate portion 41Cγ of the frame 40Cγ may be formed to have a triangular cross-sectional shape in the XZ cross-section.

[0103] (Embodiment 3) Next, Embodiment 3 will be described with reference to Figure 16. Figure 16 is a cross-sectional view of an LED lighting device 3D used in the LED lighting fixture according to Embodiment 3.

[0104] The LED lighting device 3D according to this embodiment differs from the LED lighting device 3A (Figure 10) according to the modified example 1 of Embodiment 1 in the configuration of the extended piece 33D of the cover member 30D. Specifically, in Embodiment 1, the extended piece 33 extended in a direction parallel to the first surface 10a and the second surface 10b of the substrate 10, but in this embodiment, the extended piece 33D extends so as to be inclined with respect to the first surface 10a and the second surface 10b of the substrate 10.

[0105] In this embodiment, the extension piece 33D extends such that its tip (the end on the substrate 10 side) is further away from the cover body 31A than its rear end (the end on the mounting portion 32 side). Specifically, the extension piece 33D is inclined to widen outward from its tip to its rear end so that a spatial region S is formed between the extension piece 33D and the recessed portion 41a of the frame 40.

[0106] Furthermore, the tip of the extension piece 33D is in contact with the frame 40. Specifically, the tip of the extension piece 33D is in contact with the bottom surface of the recessed portion 41a of the frame 40.

[0107] With respect to components other than the cover member 30D, the LED lighting device 3D in this embodiment is the same as the LED lighting device 3A in Embodiment 1 described above.

[0108] As described above, in the LED lighting device 3D according to this embodiment, the extended piece 33D of the cover member 30D is located in the recessed portion 41a provided in the main plate portion 41 of the frame 40, similar to the first embodiment.

[0109] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33D.

[0110] Furthermore, in the LED lighting device 3D according to this embodiment, the extended piece 33D of the cover member 30D is inclined to widen outward from the tip to the rear end so that a spatial area S is formed between the extended piece 33D and the recessed portion 41a, and the tip of the extended piece 33D is in contact with the frame 40.

[0111] This configuration allows the spatial region S formed by the inclined extension piece 33D to be used as a space to accommodate the screw shaft or screw head of a screw used to attach a functional member to the LED lighting device 3D to the frame 40, or as a space to house conductive wires.

[0112] In this embodiment, a spatial region S is formed between the extended piece 33D and the recessed portion 41a, but this is not limited to this. For example, the main plate portion 41Dα of the frame 40Dα may be formed in a shape such that no spatial region is formed between the extended piece 33D and the recessed portion 41aα, as shown in the LED lighting device 3Dα in Figure 17. Specifically, the main plate portion 41Dα is formed such that the bottom surface of the recessed portion 41aα is inclined at the same angle as the extending direction of the extended piece 33D. In Figure 17, the cross-sectional shape of the protruding portion 41bγ of the main plate portion 41Dα is triangular, and the inclination angle of the upper surface of the protruding portion 41bγ is approximately the same as the inclination angle of the bottom surface of the recessed portion 41aα, but this is not limited to this.

[0113] (Embodiment 4) Next, Embodiment 4 will be described using Figure 18. Figure 18 is a cross-sectional view of the LED lighting device 3E used in the LED lighting fixture according to Embodiment 4.

[0114] The LED lighting device 3E according to this embodiment differs from the LED lighting device 3A according to Embodiment 1 in the configuration of the extension piece 33E of the cover member 30E and the configuration of the main plate portion 41E of the frame 40E.

[0115] Specifically, the tip of the extension piece 33E of the cover member 30E has a bent portion 33Ea formed therein, which has an L-shaped cross-sectional shape. Also, the main plate portion 41E of the frame 40E has a hole portion 41d formed therein. In this embodiment, the hole portion 41d is formed in a recessed portion 41a. Specifically, the hole portion 41d is formed so as to recess the bottom surface of the end of the recessed portion 41a on the substrate 10 side. The tip of the extension piece 33E is then fitted into the hole portion 41d provided in the main plate portion 41E of the frame 40E.

[0116] With respect to components other than the cover member 30E and the frame 40E, the LED lighting device 3E in this embodiment is the same as the LED lighting device 3A in Embodiment 1 described above.

[0117] As described above, in the LED lighting device 3E according to this embodiment, the extended piece 33E of the cover member 30E is located in the recessed portion 41a provided in the first main plate portion 41E of the frame 40E, similar to the first embodiment described above.

[0118] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33E.

[0119] Furthermore, in the LED lighting device 3E according to this embodiment, the tip of the extended piece 33E of the cover member 30E is fitted into a hole 41d provided in the main plate portion 41E of the frame 40E.

[0120] With this configuration, the extended piece 33E catches on the hole 41d, making it difficult for the cover member 30E to come off the frame 40E.

[0121] (Embodiment 5) Next, Embodiment 5 will be described using Figure 19. Figure 19 is a cross-sectional view of the LED lighting device 3F used in the LED lighting fixture according to Embodiment 5.

[0122] The LED lighting device 3F according to this embodiment differs from the LED lighting device 3A according to Embodiment 1 in the structure of the connection between the extended piece 33 of the cover member 30A and the recessed portion 41a of the frame 40. Specifically, in Embodiment 1, the extended piece 33 and the recessed portion 41a were in contact, but in this embodiment, the extended piece 33 and the recessed portion 41a are not in contact, and a gap exists between the extended piece 33 and the recessed portion 41a.

[0123] Specifically, in the LED lighting device 3F of this embodiment, a screw 60 is screwed into a through hole provided in the recessed portion 41a. The screw 60 functions as a functional component mounting member for attaching a functional component such as a power supply unit 4 or a mounting bracket such as a hook to the frame 40. The power supply unit 4 or the functional component such as the mounting bracket is located on the opposite side of the frame 40 from the substrate 10 side (the cover body portion 31A side of the cover member 30A) and is attached to the frame 40. In other words, the functional component is located inside the frame 40.

[0124] In this embodiment, the screw 60 is screwed into the frame 40 from the inside outwards. Therefore, the screw shaft of the screw 60 is located on the outside of the recess 41a (on the side of the cover body 31A). Specifically, the surface of the extension piece 33 located in the recess 41a that faces the recess 41a is in contact with the end of the screw shaft of the screw 60. As a result, a gap exists between the extension piece 33 and the recess 41a. Thus, in this embodiment, the extension piece 33 covers the screw 60. Specifically, the extension piece 33 covers the screw shaft of the screw 60.

[0125] As described above, in the LED lighting device 3F according to this embodiment, the extended piece 33 of the cover member 30 is located in the recessed portion 41a provided in the first main plate portion 41 of the frame 40, similar to the first embodiment described above.

[0126] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0127] Furthermore, in the LED lighting device 3F according to this embodiment, a screw 60 is provided in the recessed portion 41a of the frame 40 as a functional component mounting member for attaching functional components such as a power supply unit 4 to the frame 40, and the screw 60 is covered with an extended piece 33.

[0128] This configuration allows for the storage of functional component mounting members such as screws 60 by utilizing the space between the extended piece 33 and the recessed portion 41a. Furthermore, by covering the functional component mounting members such as screws 60 with the extended piece 33, it is possible to suppress the blocking or reflection of light from the LED 20 by the functional component mounting members. Note that the functional component mounting members for attaching the functional components to the frame 40 are not limited to screws 60, but may also be other components such as crimping parts.

[0129] Furthermore, in the LED lighting device 3F shown in Figure 19, the screw 60 was screwed into the through hole of the recess 41a from the inside to the outside of the frame 40, but this is not limited to this. For example, as in the LED lighting device 3Fα shown in Figure 20, the screw 60 may be screwed into the through hole of the recess 41a from the outside to the inside of the frame 40. In this case, the screw head of the screw 60 will be on the outside of the recess 41a (on the side of the cover body 31A).

[0130] Furthermore, in the LED lighting device 3F shown in Figure 19, the extension piece 33 was in contact with the screw 60, but this is not limited to that. For example, as in the LED lighting device 3Fα shown in Figure 20, a cover member 30E having an extension piece 33E with a bent portion 33Ea formed thereon may be used to prevent contact between the extension piece 33E and the screw 60. Note that in Figure 20, the cover member 30E shown in Figure 18 is used, but this is not limited to that. In this case, the tip of the bent extension piece 33E is in contact with the bottom surface of the recess 41a, but this is not limited to that.

[0131] Furthermore, in the LED lighting device 3F shown in Figure 19, the surface of the extension piece 33 on the recessed portion 41a side was in contact with the end of the screw shaft of the screw 60, but this is not limited to this. For example, as in the LED lighting device 3Fβ shown in Figure 21, the screw 60 may penetrate not only the recessed portion 41a but also the extension piece 33. In other words, the screw 60 may be screwed in so as to communicate with both the through hole provided in the recessed portion 41a and the through hole provided in the extension piece 33. In this case, the screw 60 located in the recessed portion 41a may function not as a functional component mounting member for attaching a power supply unit 4 or a mounting bracket or other functional component to the frame 40, but as a cover member mounting member for attaching the cover member 30A to the frame 40.

[0132] (Embodiment 6) Next, Embodiment 6 will be described with reference to Figure 22. Figure 22 is a cross-sectional view of the LED lighting device 3G used in the LED lighting fixture according to Embodiment 6.

[0133] In the LED lighting device 3G according to this embodiment, similar to the LED lighting device 3F according to Embodiment 5, the extended piece 33 and the recessed portion 41a are not in contact, and a gap exists between the extended piece 33 and the recessed portion 41a.

[0134] In this embodiment, the conductive wire 70 is positioned in the recessed portion 41a, and the conductive wire 70 is located in the gap between the extension piece 33 and the recessed portion 41a. In other words, the extension piece 33 covers the conductive wire 70. The conductive wire 70 is, for example, an electric wire used to supply DC power from the power supply device 4 to the LED 20.

[0135] As described above, in the LED lighting device 3G according to this embodiment, the extended piece 33 of the cover member 30A is located in the recessed portion 41a provided in the first main plate portion 41 of the frame 40, similar to embodiments 1 and 5.

[0136] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0137] Furthermore, in the LED lighting device 3G according to this embodiment, a conductive wire 70 is placed in the recessed portion 41a, and the extended piece 33 covers the conductive wire 70.

[0138] This configuration allows the conductive wire 70 to be housed in the space between the extension piece 33 and the recessed portion 41a. In other words, the space between the extension piece 33 and the recessed portion 41a can be used as wiring space. Furthermore, by covering the conductive wire 70 with the extension piece 33, it is possible to suppress the blocking or reflection of light from the LED 20 by the conductive wire 70.

[0139] Furthermore, as with the LED lighting device 3Gα shown in Figure 23, the cover member 30E shown in Figure 18 may also be used. This allows the tip of the bent extension piece 33E to cover the side of the conductive wire 70, thereby suppressing the movement of the conductive wire 70 in the X-axis direction. In other words, the position of the conductive wire 70 can be restricted by the extension piece 33E.

[0140] (Embodiment 7) Next, Embodiment 7 will be described with reference to Figure 24. Figure 24 is a cross-sectional view of the LED lighting device 3H used in the LED lighting fixture according to Embodiment 7.

[0141] The LED lighting device 3H according to this embodiment is configured such that, in addition to the LED lighting device 3A according to Embodiment 1, the functional component 80 performs its function via the extended piece 33 of the cover member 30A and the recessed portion 41a of the frame 40.

[0142] Functional components 80 include, for example, various sensors such as motion sensors and brightness sensors, receiving units (light receiving units) such as wireless receiving units for receiving wireless dimming signals and infrared receiving units for receiving infrared remote control signals, or display monitors, etc.

[0143] The functional component 80 is located on the side of the frame 40 opposite to the substrate 10 side (the side of the cover body 31A of the cover member 30A). In other words, the functional component 80 is located inside the frame 40. Specifically, the functional component 80 is located opposite the recessed portion 41a of the frame 40.

[0144] An extension piece 33 is positioned in the recessed portion 41a of the frame 40. In this embodiment, the extension piece 33 is provided with a through hole 33a. The recessed portion 41a is also provided with a through hole 41a1. The through holes 33a and 41a1 are arranged to communicate with each other. Signals received by the functional component 80 or signals output from the functional component 80 pass through the through holes 33a and 41a1.

[0145] As described above, in the LED lighting device 3H according to this embodiment, the extended piece 33 of the cover member 30A is located in the recessed portion 41a provided in the first main plate portion 41 of the frame 40, similar to the first embodiment described above.

[0146] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0147] Furthermore, in the LED lighting device 3H according to this embodiment, the functional component 80, which is located on the opposite side of the frame 40 from the substrate 10 side, performs its function via the recessed portion 41a. Specifically, the functional component 80 performs its function via the recessed portion 41a and the extended piece 33.

[0148] As a result, even if the extension piece 33 is placed in the recessed portion 41a, the functional component 80 can perform its function through the recessed portion 41a and the extension piece 33.

[0149] In the LED lighting device 3H shown in Figure 24, the functional component 80 was configured to perform its function through both the recessed portion 41a and the extended piece 33, but this is not limited to this configuration. For example, as in the LED lighting device 3Hα shown in Figure 25, the extended piece 33 may not extend to the through hole 41a1 of the recessed portion 41a, and the functional component 80 may be configured to perform its function through only the recessed portion 41a of the recessed portion 41a and the extended piece 33.

[0150] Furthermore, since the extension piece 33 is made of a translucent resin material, signals such as radio waves or infrared rays can pass through the extension piece 33. Therefore, as shown in the LED lighting device 3Hβ in Figure 26, the extension piece 33 does not have a through hole, and the extension piece 33 may extend beyond the through hole 41a1 of the recessed portion 41a. Although not shown, similarly, the main plate portion 41 of the frame 40 can also be made of a resin material, allowing signals such as radio waves or infrared rays to pass through the main plate portion 41 without providing a through hole in it.

[0151] (Embodiment 8) Next, Embodiment 8 will be described with reference to Figure 27. Figure 27 is a cross-sectional view of the LED lighting device 3I used in the LED lighting fixture according to Embodiment 8.

[0152] The LED lighting device 3I according to this embodiment has a configuration in which a conductive wire 90 is arranged near the stepped portion of the recessed portion 41a of the frame 40, compared to the LED lighting device 3A according to Embodiment 1 described above.

[0153] The conductive wire 90 is a thick-diameter electric wire, such as a VVF cable drawn out from a power terminal block installed inside the frame 40. The conductive wire 90 drawn out from the power terminal block is connected to the power supply unit 4. Because such a conductive wire 90 is relatively stiff, there is a risk that when a contractor installing LED lighting fixtures runs the conductive wire 90, the conductive wire 90 may hit the frame 40 and deform the frame 40.

[0154] Therefore, since the stepped portion (rising portion) of the main plate portion 41, where the recessed portion 41a is provided, has a structure with high mechanical strength, the conductive wire 90 is placed near the stepped portion of the recessed portion 41a. This makes it possible to suppress deformation of the frame 40 even if the conductive wire 90 comes into contact with the stepped portion of the main plate portion 41.

[0155] As described above, in the LED lighting device 3I according to this embodiment, the extended piece 33 of the cover member 30A is located in the recessed portion 41a provided in the first main plate portion 41 of the frame 40, similar to the first embodiment described above.

[0156] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0157] (Embodiment 9) Next, Embodiment 9 will be described using Figure 28. Figure 28 is a cross-sectional view of the LED lighting device 3J used in the LED lighting fixture according to Embodiment 9.

[0158] The LED lighting device 3J according to this embodiment differs from the LED lighting device 3 according to Embodiment 1 in the configuration of the cover member 30J.

[0159] Specifically, in the LED lighting device 3J according to this embodiment, the cover member 30J has a portion that is different from the portion located in the recessed portion 41a of the extension piece 33J, and the reflectivity of the surface of the portion located in the recessed portion 41a of the extension piece 33J is higher than the reflectivity of the surface of the portion that is different from the portion located in the recessed portion 41a of the extension piece 33J.

[0160] The cover member 30J in this embodiment, like the cover member 30 in Embodiment 1, has a cover body portion 31, a mounting portion 32J, and an extension piece 33J. However, the mounting portion 32J and extension piece 33J in this embodiment are made of different materials than the mounting portion 32 and extension piece 33 in Embodiment 1. Specifically, the mounting portion 32J and extension piece 33J are made of a material with a higher reflectivity than the cover body portion 31. For example, the mounting portion 32J and extension piece 33J are opaque and made of a white resin material. However, the mounting portion 32J and extension piece 33J may be translucent if they are made of a material with a higher surface reflectivity than the cover body portion 31.

[0161] Furthermore, the cover body portion 31 is made of the same material as the cover member 30J in this embodiment and the cover member 30 in the first embodiment described above. Also, the cover member 30J in this embodiment and the cover member 30 in the first embodiment described above have the same overall shape.

[0162] Furthermore, in this embodiment, the cover member 30J is formed from two types of resin materials: a first resin material that constitutes the cover body portion 31 and a second resin material that constitutes the mounting portion 32J and the extension piece 33J. In this case, the cover body portion 31, the mounting portion 32J, and the extension piece 33J can be formed by two-color molding.

[0163] As described above, in the LED lighting device 3J according to this embodiment, the extended piece 33J of the cover member 30J is located in the recessed portion 41a provided in the first main plate portion 41 of the frame 40, similar to the first embodiment described above.

[0164] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33J.

[0165] Furthermore, in the LED lighting device 3J according to this embodiment, the reflectivity of the surface of the portion of the extension piece 33J of the cover member 30J located in the recessed portion 41a is higher than the reflectivity of the surface of a portion of the extension piece 33J other than the portion located in the recessed portion 41a. Specifically, the reflectivity of the surface of the extension piece 33J located in the recessed portion 41a is higher than the reflectivity of the surface of the cover body portion 31 (an example of a portion of the extension piece 33J other than the portion located in the recessed portion 41a).

[0166] This configuration allows the light emitted from the LED 20, reflected off the inner surface of the cover body 31, and reaching the extension piece 33J to be reflected by the extension piece 33J. This prevents the light from the LED 20 from entering the interior of the extension piece 33J and guiding the extension piece 33J and the mounting part 32J. Furthermore, reflecting the light from the LED 20 with the extension piece 33J improves the light extraction efficiency.

[0167] In the LED lighting device 3J shown in Figure 28, the cover body 31, the mounting portion 32J, and the extension piece 33J are made of different materials, but this is not limited to this. For example, in the cover member 30Jα of the LED lighting device 3Jα shown in Figure 29, a part of the cover body 31α and another part of the cover body 31α may be made of different materials, while the other part of the cover body 31α, the cover body 31α, the mounting portion 32J, and the extension piece 33J may be made of the same material. In Figure 29, the ceiling-side portion (lower portion in the figure) of the protruding portion 31a of the cover body 31α is made of the same material as the mounting portion 32J and the extension piece 33J. As an example, the ceiling-side portion of the protruding portion 31a of the cover body 31α, the mounting portion 32J, and the extension piece 33J can be made of a white resin material, while the floor-side portion (upper portion in the figure) of the protruding portion 31a of the cover body 31α can be made of a resin material that has light-transmitting and light-diffusing properties.

[0168] Alternatively, as shown in Figure 30, the LED lighting device 3Jβ, in which only the extension piece 33Jβ of the cover member 30Jβ is made of a different material, may be constructed from a different material. For example, the extension piece 33Jβ may be made of a white resin material, while the cover body 31 and mounting portion 32 may be made of a resin material that has light-transmitting and light-diffusing properties.

[0169] (Embodiment 10) Next, Embodiment 10 will be described with reference to Figure 31. Figure 31 is a cross-sectional view of an LED lighting device 3K used in the LED lighting fixture according to Embodiment 10.

[0170] The LED lighting device 3K according to this embodiment differs from the LED lighting device 3A according to Embodiment 1 in the configuration of the cover member 30K and the frame 40K.

[0171] Specifically, in the LED lighting device 3A according to Embodiment 1 described above, the lengths in the Z-axis direction of the pair of mounting portions 32 of the cover member 30 are the same, and the lengths in the Z-axis direction of the pair of side plate portions 42 of the frame 40 are the same. However, in the LED lighting device 3K according to this embodiment, the length in the Z-axis direction of one of the pair of mounting portions 32K of the cover member 30K is shorter than the length in the Z-axis direction of the other mounting portion 32K, and the length in the Z-axis direction of one of the pair of side plate portions 42K of the frame 40K is shorter than the length in the Z-axis direction of the other side plate portion 42K.

[0172] More specifically, as shown in Figure 31, the pair of mounting portions 32K of the cover member 30K have opposing first mounting portion 32K1 and second mounting portion 32K2, and the Z-axis length (leg length) of the first mounting portion 32K1 is longer than the Z-axis length (leg length) of the second mounting portion 32K2. Similarly, the pair of side plate portions 42K of the frame 40K have opposing first side plate portion 42K1 and second side plate portion 42K2, and the Z-axis length (leg length) of the first side plate portion 42K1 is longer than the Z-axis length (leg length) of the second side plate portion 42K2. Note that the Z-axis lengths of the first mounting portion 32K1 and the first side plate portion 42K1 are the same as the Z-axis lengths of the mounting portion 32 and side plate portion 42 in the above embodiment 1.

[0173] As described above, in the LED lighting device 3K according to this embodiment, the extended piece 33 of the cover member 30K is located in the recessed portion 41a provided in the first main plate portion 41 of the frame 40K, similar to the first embodiment described above.

[0174] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0175] Furthermore, in the LED lighting device 3K according to this embodiment, in the frame 40K, the length of one of the pair of side plate portions 42K is shorter than the length of the other of the pair of side plate portions 42K.

[0176] This configuration ensures the strength of frame 40K while also providing space inside frame 40K for arranging functional components such as the power supply unit 4 and wiring.

[0177] (Embodiment 11) Next, Embodiment 11 will be described using Figure 32. Figure 32 is a cross-sectional view of the LED lighting device 3L used in the LED lighting fixture according to Embodiment 11.

[0178] The LED lighting device 3L according to this embodiment differs from the LED lighting device 3A according to Embodiment 1 in the configuration of the frame 40L.

[0179] Specifically, in the LED lighting device 3A according to Embodiment 1 described above, the recessed portion 41a of the frame 40 was provided at each of the short-side ends of the main plate portion 41, whereas in the LED lighting device 3L according to this embodiment, the recessed portion 41a of the frame 40L is provided at only one of the short-side ends of the main plate portion 41L.

[0180] Both of the pair of extension pieces 33 of the cover member 30A are in contact with the surface of the main plate portion 41L of the frame 40L. However, since the recessed portion 41a of the frame 40L is provided on only one side, one of the pair of extension pieces 33 is located in the recessed portion 41a, while the other of the pair of extension pieces 33 is not. Therefore, the pair of extension pieces 33 are formed at positions with different heights.

[0181] As described above, in the LED lighting device 3L according to this embodiment, the extended piece 33 of the cover member 30A is located in the recessed portion 41a provided in the first main plate portion 41L of the frame 40L, similar to the first embodiment described above.

[0182] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0183] In this embodiment, the LED lighting device 3L has only one of the pair of extension pieces 33 of the cover member 30A located in the recess 41a of the frame 40L. Therefore, there is a risk that light emitted from the LED 20 may reach the other of the pair of extension pieces 33. However, if the lighting device is of a type that extracts light from only one side, such as the LED lighting fixture 1L shown in Figure 33, then the effect of light from the LED 20 reaching the other of the pair of extension pieces 33 when using the LED lighting device 3L of Figure 32 can be ignored. The fixture body 2L used in the LED lighting fixture 1L of Figure 33 has a reflector 2c and is structured to extract light from only one side in the X-axis direction.

[0184] (Embodiment 12) Next, Embodiment 12 will be described using Figure 34. Figure 34 is a cross-sectional view of the LED lighting device 3M used in the LED lighting fixture according to Embodiment 12.

[0185] The LED lighting device 3M according to this embodiment differs from the LED lighting device 3A according to Embodiment 1 in the configuration of the frame 40M.

[0186] Specifically, the frame 40M in this embodiment is composed of two parts: a first frame member 40a and a second frame member 40b. The first frame member 40a is a frame body having a main plate portion 41M and a side plate portion 42. The second frame member 40b is a bent member made of a metal plate. The second frame member 40b is bent to have a step. The second frame member 40b is a support member that supports the substrate 10 by pressing down on both ends of the substrate 10 in the short direction from above.

[0187] In this embodiment, the recessed portion 40b1 of the frame 40M is provided in the second frame member 40b, and no recessed portion is formed in the main plate portion 41M. The lower part of the step in the second frame member 40b functions as the recessed portion 40b1. The extended piece 33 of the cover member 30A is located in the recessed portion 40b1 of the second frame member 40b.

[0188] As described above, in the LED lighting device 3M according to this embodiment, the extended piece 33 of the cover member 30A is located in the recessed portion 40b1 of the frame 40M, similar to the first embodiment.

[0189] This configuration makes it possible to suppress the light emitted from the LED 20 from reaching the extension piece 33.

[0190] (Other variations) Although the LED lighting fixtures and LED lighting devices according to the present invention have been described above based on Embodiments 1 to 12, the present invention is not limited to these Embodiments 1 to 12.

[0191] For example, in the above embodiment 1, the entire substrate 10 was in contact with the metal portion of the main plate portion 41 of the frame 40, but this is not limited to this. Specifically, as shown in the LED lighting device 3N in Figure 35, 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 from the opening 41e of the frame 40N. In this case, instead of bringing the second surface 10b of the substrate 10 into contact with the outer surface of the main plate portion 41N of the frame 40N, the first surface 10a of the substrate 10 may be brought into contact with the inner surface of the main plate portion 41N of the frame 40N, as shown in the LED lighting device 3Nα in Figure 36. In other words, the substrate 10 may be placed inside the frame 40N instead of outside. Also, when the substrate 10 is placed inside the frame 40N, a support member 100 to support the substrate 10 may be separately provided, as shown in the LED lighting device 3Nβ in Figure 37. Furthermore, the frame 40N having a main plate portion 41N in which the openings 41e are formed can be the one with the configuration shown in Figure 38. In the frame 40N shown in Figure 38, three openings 41e are formed in the main plate portion 41N, but it is not limited to this.

[0192] Furthermore, in the above embodiment 1, the substrate 10 was fixed to the frame 40 by claws 43 provided on the main plate portion 41 of the frame 40, but this is not limited to this. For example, as in the LED lighting device 3O shown in Figure 39, the substrate 10 and the main plate portion 41 of the frame 40 may be fixed together by an adhesive 110. The adhesive 110 is inserted between the substrate 10 and the main plate portion 41.

[0193] Furthermore, in the above embodiment 1, an SMD type LED element with an LED chip mounted in a package was used as the LED 20, and the light-emitting module consisting of the substrate 10 and the LED 20 was an SMD type LED module, but it is not limited to this. 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, the LED chip (bare chip) itself can be used as the LED 20, and a plurality of LEDs 20 (LED chips) can be arranged linearly on the substrate 10, and the plurality of LEDs 20 can be sealed together or individually with a sealing member (for example, a phosphor-containing resin).

[0194] Furthermore, while the above embodiment 1 uses a cover member 30 having both diffusive and light-transmitting properties, the invention is not limited to this. For example, instead of the cover member 30, a light-transmitting cover having only light-transmitting properties may be used. In this case, a transparent cover with such high transmittance that one can see through to the other side may be used as the light-transmitting cover.

[0195] Furthermore, the present invention also includes forms obtained by applying various modifications to each of the above embodiments as conceived by those skilled in the art, as well as forms realized by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present invention. [Explanation of Symbols]

[0196] 1. 1L LED lighting fixture 2, 2L appliance body 3, 3A, 3B, 3C, 3Cα, 3Cβ, 3Cγ, 3D, 3Dα, 3E, 3F, 3Fα, 3Fβ, 3G, 3Gα, 3H, 3Hα, 3Hβ, 3I, 3J, 3Jα, 3Jβ, 3K, 3L, 3M, 3N, 3Nα, 3Nβ, 3O LED lighting device 10 circuit boards 20 LED 30, 30A, 30B, 30D, 30E, 30J, 30Jα, 30Jβ, 30K Cover members 31, 31A, 31α Cover body 31a, 31aA protrusion 31b recess 32, 32B, 32J, 32K Cash and Payment Department 33, 33D, 33E, 33J, 33Jβ extension pieces 40, 40B, 40C, 40Cα, 40Cβ, 40Cγ, 40Dα, 40E, 40K, 40L, 40M, 40N フレーム 41, 41C, 41Cα, 41Cβ, 41Cγ, 41Dα, 41E, 41L, 41M, 41N Mainboard Section 41a, 41aα, 40b1 (Wabi section) 41b, 41bα, 41bβ, 41bγ protrusions 41d Acupoint 42, 42B, 42K Side Panel Section 70 Conductive wire 80 Functional Components 90 Conductive wire

Claims

1. An LED lighting device that is detachably attached to a recess in the fixture body of an LED lighting fixture, A circuit board with LEDs arranged on it, A frame having a long main plate portion to which the aforementioned substrate is attached, The system comprises a cover member attached to the frame so as to cover the LED, The main plate portion has a recess provided along the longitudinal direction of the main plate portion at the short end of the main plate portion, The frame has side plate portions erected on the main plate portion from each of the short ends of the main plate portion, The cover member has an extended piece, at least a portion of which is located in the recessed portion. The extended piece extends along the shorter direction of the main plate portion. LED lighting equipment.

2. The extended piece is in contact with the recessed portion. The LED lighting device according to claim 1.

3. The extended piece is in contact with the recessed portion while pressing against it. The LED lighting device according to claim 2.

4. An LED lighting device that is detachably attached to a recess in the fixture body of an LED lighting fixture, A circuit board with LEDs arranged on it, A frame having a long main plate portion to which the aforementioned substrate is attached, The system comprises a cover member attached to the frame so as to cover the LED, The main plate portion has a recess provided along the longitudinal direction of the main plate portion at the short end of the main plate portion, The cover member has an extended piece, at least a portion of which is located in the recessed portion. The extended piece extends along the shorter direction of the main plate portion, Furthermore, it has conductive wires arranged in the recessed portion, The extension piece covers the conductive wire. LED lighting equipment.

5. The portion of the extension piece located in the recessed area is positioned behind the light-emitting surface of the LED. An LED lighting device according to any one of claims 1 to 4.

6. The main plate portion has protrusions on both sides of the area to which the substrate is attached that protrude toward the light-emitting side of the LED, The portion of the extended piece located in the recessed area is located at a lower position than the protruding portion. The LED lighting device according to any one of claims 1 to 5.

7. The tip of the extension piece is fitted into a hole provided in the main plate. An LED lighting device according to any one of claims 1 to 6.

8. The cover member has a portion that is different from the portion located in the recessed portion of the extended piece. The reflectivity of the surface of the portion of the extension piece located in the recess is higher than the reflectivity of the surface of the other portion. An LED lighting device according to any one of claims 1 to 7.

9. The portion of the extended piece located in the recess and the other portion are formed by two-color molding. The LED lighting device according to claim 8.

10. A cover member mounting member for attaching the cover member to the frame is provided in the recessed portion. The LED lighting device according to any one of claims 1 to 9.

11. The frame includes a functional component located on the side opposite to the substrate side, A functional component mounting member for attaching the functional component to the frame is provided in the recessed portion. The functional component mounting member is covered by the extended piece. An LED lighting device according to any one of claims 1 to 10.

12. The frame includes a functional component located on the side opposite to the substrate side, The aforementioned functional component performs its function through the recessed portion. The LED lighting device according to any one of claims 1 to 11.

13. The tip of the extension piece abuts against the frame, The extended piece is inclined to widen outward from its leading edge to its trailing edge, such that a spatial region is formed between the extended piece and the recessed portion. The LED lighting device according to any one of claims 1 to 12.

14. The cover member has a cover body and a mounting portion that extends from the cover body toward the frame and is attached to the frame. The cover body includes a protruding portion that extends outward from the mounting portion. The aforementioned protrusion does not have a recess on the side opposite to the frame side. An LED lighting device according to any one of claims 1 to 13.

15. The aforementioned recesses are provided at each of the short-side ends of the main plate portion. An LED lighting device according to any one of claims 1 to 14.

16. An LED lighting device that is detachably attached to a recess in the fixture body of an LED lighting fixture, A circuit board with LEDs arranged on it, A frame having a long main plate portion to which the aforementioned substrate is attached, The system comprises a cover member attached to the frame so as to cover the LED, The main plate portion has a recess provided along the longitudinal direction of the main plate portion at the short end of the main plate portion, The cover member has an extended piece, at least a portion of which is located in the recessed portion. The extended piece extends along the shorter direction of the main plate portion, The aforementioned recess is provided only at one of the two ends of the main plate portion in the short direction. LED lighting equipment.

17. The frame has a pair of side plates, The length of one of the pair of side plates is shorter than the length of the other of the pair of side plates. An LED lighting device according to any one of claims 1 to 3.

18. The cover member has a cover body portion and a mounting portion that extends from the cover body portion toward the frame side and is attached to the frame, The tip of the side plate portion and the tip of the mounting portion are in contact with each other. An LED lighting device according to any one of claims 1 to 3.

19. An LED lighting device according to any one of claims 1 to 18, The fixture comprises a fixture body that holds the aforementioned LED lighting device, LED lighting fixtures.

Images