lighting equipment

Abstract

To provide an illuminating device in which a shadow of a first connector hardly appears.SOLUTION: An illuminating device 1 comprises a first board 511 comprising a first LED element 512 and a first connector 513, and a second board 521 comprising a second LED element 522, in a first direction. The first board 511 overlaps with the second board 521 when viewed from an irradiation surface side, and is arranged on a back side of the second board 521. The first connector 513 is hidden by the second board 521 when viewed from the irradiation surface side, and is mounted on the first board 511.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to an elongated lighting device. [Background technology]

[0002] A lighting device has been proposed that has a first substrate having a first LED element and a first connector, and a second substrate having a second LED element, arranged in a first direction, and that has notches or through holes for wiring at the adjacent side ends of the first substrate and the second substrate (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-064390 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, the first connector of the first substrate may block the light from the first LED element, appearing as a shadow. The present invention has been made in view of the above circumstances, and has an object to provide a lighting device in which the shadow of the first connector is less likely to appear. [Means for solving the problem]

[0005] In order to solve the above problem, the lighting device of the present invention is a lighting device comprising a first substrate having a first LED element and a first connector, and a second substrate having a second LED element, arranged in a first direction, wherein the first substrate is arranged on the back side of the second substrate so as to overlap with the second substrate when viewed from the irradiation surface side, and the first connector is mounted on the first substrate so as to be hidden by the second substrate when viewed from the irradiation surface side. [Effects of the Invention]

[0006] According to the present invention, the first connector is located on the back side of the second board, and the shadow of the first connector is less likely to appear. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a perspective view showing two lighting devices according to the first embodiment connected together, as viewed from the back side. [Figure 2] FIG. 2 is a perspective view of the lighting device in an exploded state, in which the mounting fixture is viewed from the front side and the lamp fixture is viewed from the back side. [Figure 3] FIG. 2 is a cross-sectional view of the lighting device. [Figure 4] FIG. 10 is a perspective view of the mounting fixture in an exploded state, seen from the front side, with a portion enlarged. [Figure 5] FIG. 10 is a perspective view of the mounting fixture in an exploded state, seen from the rear, with a portion enlarged. [Figure 6] 1A is a cross-sectional view of the lamp fixture attached to the fixture base, and FIG. 1B is a view of the lamp fixture detached from the fixture base as viewed from the longitudinal direction. [Figure 7] FIG. 2 is a perspective view of the lamp in an exploded state, seen from the front side, with a portion enlarged. [Figure 8] FIG. 10 is a perspective view of the lamp in an exploded state, seen from the rear, with a portion enlarged. [Figure 9] 10 is a longitudinal view of the disassembled state of the light source holder, the lamp side base, the second light source unit, and the translucent cover. FIG. [Figure 10] (a) is an enlarged longitudinal cross-sectional view of the other longitudinal end of the lamp, (b) is a view from the front of the lamp with the translucent cover and end cover removed, and (c) is a cross-sectional view from one longitudinal side of the lamp with the translucent cover and end cover removed, cut at the first light source unit. [Figure 11] (a) is an oblique view of the lamp with the translucent cover and end cover removed, viewed from the front side and the other side in the longitudinal direction, and (b) and (c) are oblique views of the lamp with the first light source unit removed from the lamp side base, viewed from the other side in the longitudinal direction. [Figure 12]10A and 10B are perspective views of two lighting devices according to a second embodiment in a connected state, where (a) is a view from the front side and (b) is a view from the back side. [Figure 13] These are cross sections of the lighting device, where (a) is a cross section at the location where the inner lamp fixture is located, and (b) is a cross section at the location where the outer lamp fixture is located. [Figure 14] 1(a) is a perspective view of the appliance-side base with a part of the first U-shaped portion cut away, as seen from the front side, and FIG. 1(b) is a perspective view of the appliance-side base, as seen from the back side. [Figure 15] FIG. 10 is an enlarged vertical cross-sectional view of a connecting portion of two lamps according to a modified example. [Figure 16] FIG. 10 is an enlarged view of a protruding portion according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0008] <Summary> A first lighting device according to one aspect of the embodiment is a lighting device having a first substrate having a first LED element and a first connector, and a second substrate having a second LED element, arranged in a first direction, wherein the first substrate is arranged on the back side of the second substrate so as to overlap with the second substrate when viewed from the irradiation surface side, and the first connector is mounted on the first substrate so as to be hidden by the second substrate when viewed from the irradiation surface side. A second lighting device according to another aspect of the embodiment is the first lighting device, wherein the first substrate is held by a first substrate holder, the second substrate is held by a second substrate holder, and the second holder is configured to be connectable to an end of the second holder in the first direction, thereby eliminating the problem of insufficient light intensity at the end in the first direction. A third lighting device according to another aspect of the embodiment is the first or second lighting device, wherein the first substrate holder is provided with a translucent cover that covers the first LED element from the side of the illumination surface of the first LED element, thereby suppressing uneven light caused by a difference in light intensity between the first LED element and the second LED element.

[0009] First Embodiment 1. Overall configuration of the lighting device The lighting devices 1A and 1B are elongated LED base lights that are attached to an installation surface such as a ceiling. The lighting devices 1A and 1B are provided so as to be continuous in the longitudinal direction. As shown in Figures 1 and 2, the lighting devices 1A and 1B include mounting fixtures 3A and 3B that are fixed to the installation surface, and lighting fixtures 5A and 5B that are attached to the mounting fixtures 3A and 3B. In the lighting devices 1A and 1B, the side from which light is emitted is referred to as the front side, and may be simply referred to as the "front side." In the lighting devices 1A and 1B, the side on which the installation surface is located is referred to as the back side, and may be simply referred to as the "back side." The longitudinal direction of the elongated lighting devices 1A and 1B may be simply referred to as the "longitudinal direction," and the short side direction of the lighting devices 1A and 1B may be simply referred to as the "short side direction." Furthermore, for the sake of convenience, in lighting devices 1A and 1B that are continuous in the longitudinal direction, the side on which lighting device 1A is located will be referred to as "one side," and the side on which lighting device 1B is located will be referred to as "the other side." The lighting device 1A receives power from a commercial power source (not shown) via a harness 21, and the lighting device 1B receives power via a feeder wiring from the lighting device 1A. The lighting device 1A and the lighting device 1B have the same configuration except for the power receiving method. However, the lighting device 1A and the lighting device 1B are arranged with the other longitudinal end of the lighting device 1A and one longitudinal end of the lighting device 1B butted against each other, and are symmetrical in the longitudinal direction with respect to the butting surface. For this reason, the lighting device will be described using a diagram of lighting device 1A, but since the basic configuration is the same, symbols without "A" or "B" will be used unless it is necessary to distinguish between lighting devices 1A and 1B.

[0010] 2. Mounting fixture The explanation will be mainly based on FIG. The mounting fixture 3 is fixed to an installation surface (not shown), for example, by threading a nut 32 onto a hanging bolt 31 provided on the installation surface. The mounting fixture 3 includes a fixture-side base 33 and a lamp fixture fixture 34 for mounting the lamp 5 to the fixture-side base 33. In addition to the lamp fixture 34, the mounting fixture 3 here also includes a terminal block 35a for supplying commercial power to the lamp 5. The mounting fixture 3A for the lighting device 1A includes a terminal block 35b for sending wiring to another lighting device, lighting device 1B. The two mounting fixtures 3A and 3B are connected in a state where they are positioned on a straight line by a positioning plate 41. Each part will be described below mainly with reference to FIGS.

[0011] (1) Fixture base The appliance side base 33 has a rectangular thin plate shape that is long in the longitudinal direction. The appliance side base 33 includes an appliance side front base 37 located on the front side and an appliance side rear base 38 located on the rear side. The following description will also refer to FIG. (1-1) Back base of the fixture The appliance side rear base 38 has an appliance side rear base portion 380 having a rectangular shape that is long in the longitudinal direction, multiple pairs of rib portions 381, 382, ​​383, 384 that are spaced apart in the short direction of the appliance side rear base portion 380 and extend in the longitudinal direction, and a pair of protrusion portions 385 that are spaced apart in the short direction of the appliance side rear base portion 380 and extend in the longitudinal direction. When viewed from the longitudinal direction, the appliance-side rear base 38 has a shape that is line-symmetrical in the lateral direction with respect to an imaginary line that passes through the center in the lateral direction and extends in the front-to-back direction. The appliance-side rear base 38 may be a drawn or extruded product made of a resin material or a metal material, or may be a processed product obtained by pressing a metal plate.

[0012] The appliance side rear base portion 380 is flat, and has ribs 381, 382, ​​383, and 384 formed on its surface and a protrusion 385 formed on its back surface, thereby reinforcing the appliance side rear base portion 380. 4 and 5, the fixture-side rear base portion 380 has a through-hole 380a for the hanging bolt 31, a through-hole 380b for the lamp fixture mounting device 34, a through-hole 380c for the harness 21, etc. A fitting 42 made of a resin material fits into the through-hole 380c to protect the harness 21, etc.

[0013] As shown in FIG. 6, the pair of rib portions 381 are located on the central side in the short side direction and form fixing grooves into which screws 391 for fixing the appliance side front base 37 to the appliance side rear base 38 are threadedly engaged. The rib portion 383 has a vertical portion 383a extending toward the front side, and a horizontal portion 383b extending inward in the short side direction from the tip of the vertical portion 383a. As shown in Fig. 6(a), the space between the rib portion 382 and the vertical portion 383a of the rib portion 383 can be used as a space for storing the harness 22 for feeding wiring. This prevents the harness 22 from hanging down toward the lamp 5, and prevents the lamp 5 from getting caught on the harness 22 when attaching the lamp 5 to the mounting fixture 3. The surface of the horizontal portion 383b abuts against the fixture side front base portion 370 of the fixture side front base 37. Furthermore, when routing the harness 22 before attaching the fixture side front base 37 to the fixture side rear base 38, the harness 22 is supported by the horizontal portion 383b of the rib portion 383, making it easy to route the harness 22 inside the fixture side base 33.

[0014] As shown in FIG. 3 , the ribs 382 and 383 are provided on both sides of the center of the fixture-side base 33 in the short direction, and the terminal blocks 35a and 35b are arranged in the center of the fixture-side base 33 in the short direction. The harness 22 connected to the terminals on one side of the terminal blocks 35a and 35b in the short direction is arranged between the ribs 382 and 383 on one side of the short direction, and the harness 22 connected to the terminals on the other side of the terminal blocks 35a and 35b in the short direction is arranged between the ribs 382 and 383 on the other side of the short direction. This prevents the wiring of the harness 22 from becoming complicated or crossing, improving installation efficiency. Furthermore, the length of the harness 22 connecting the two terminal blocks 35a and 35b can be shortened. 6(a), the rib portion 384 abuts against the rib portion 371 of the appliance side front base 37. As a result, the rib portion 371 is positioned between the rib portions 384, 383 of the appliance side rear base 38, and the harness 22 can be prevented from contacting the rib portion 371 of the appliance side front base 37 when the appliance side front base 37 is attached to the appliance side rear base 38. 6(a), the protrusion 385 corresponds to the thickness of the lighting fixture mount 34 attached to the rear surface of the fixture-side rear base 38. This allows the mounting fixture 3 to be stably abutted against the installation surface.

[0015] (1-2) Fixture side surface base The appliance side front base 37 has an appliance side front base portion 370 having a rectangular shape that is long in the longitudinal direction, and a pair of rib portions 371 that are provided on both ends of the appliance side front base portion 370 in the short direction and extend in the longitudinal direction. 4 and 5, the fixture side front base portion 370 has a through-hole 370a for the hanging bolt 31, a through-hole for the lighting fixture mounting device 34, a through-hole 370c for the harness 21, a through-hole 370e for the terminal blocks 35a and 35b, a through-hole 370f for the feed wiring harness 22, etc. Fittings 42 and 43 fit into the through-holes 370c and 370f to protect the harnesses 21 and 22, etc. The appliance side front base portion 370 has through holes at the center in the short direction and spaced apart in the longitudinal direction. Screws 391 are inserted into the through holes, and the threaded portions of the screws are threadedly engaged between a pair of rib portions 381 of the appliance side rear base 38. This joins the appliance side front base 370 and the appliance side rear base 38.

[0016] (2) Lighting fixture As shown in FIGS. 3 and 6, the lamp fixture 34 has an engaging portion 340 that engages with the lamp 5, and an attachment portion 341 that attaches the lamp fixture 34 to the fixture-side base 33. The lamp fixture 34 is made of a single metal plate, and the engagement portion 340 is configured to be elastically deformable in the short direction. The lighting fixture mounting device 34 has a U-shaped portion 342 that opens on the back side, a flat portion 343 that extends in the short direction from the opening side end of the U-shaped portion 342, an extension portion 344 that extends in an L-shape from the outer end of the short direction of the flat portion 343 to the front side, and a bent portion 345 provided at the extending tip of the extension portion 344. The U-shaped portion 342 has a through-hole at the bottom, and a screw 392 is inserted into the through-hole, and the threaded portion of the screw 392 is screwed into a nut 393 arranged on the back surface of the fixture-side front base portion 370. In this way, the lighting fixture fixture 34 is attached to the fixture-side base 33. The U-shaped portion 342 fits into the through hole 380b of the appliance side rear base 38, with the bottom portion of the U-shaped portion 342 abutting against the appliance side front base 37 and the flat portion 343 abutting against the appliance side rear base 38. The bottom of the U-shaped portion 342 constitutes the mounting portion 341, and the flat portion 343 constitutes the contact portion with the appliance side base 33. The pair of extensions 344 are configured so that the distance between them can be increased or decreased in the short direction (they are elastically deformable). In this case, the bent portion 345 is bent toward the extensions 344. As shown in FIG. 3, the bent portion 345 engages with an engagement groove 530c (see FIG. 9) of the protruding portion 530 of the lamp-side base 53. This allows the lamp 5 to be removably attached to the mounting fixture 3. The bent portion 345 constitutes the engagement portion 340.

[0017] (3)Terminal block The terminal blocks 35a and 35b here have the same configuration and are for two cores. A harness 21 (see FIGS. 1 and 2) on the commercial power supply side is connected to the input side of the terminal block 35a. A harness 22 for feeding wiring to the lighting device 1B and a harness 351 (see FIGS. 7 and 8) for a connector 353 that connects to a connector 562 on the power supply unit 56 side of the lighting fixture 5A are connected to the output side of the terminal block 35a. As shown in FIGS. 4 and 5, the terminal blocks 35a and 35b are attached to the appliance side front base 37 by screws 394 using a terminal block attachment 361.

[0018] (4) Positioning plate The positioning plate 41 has a rectangular shape that is long in the longitudinal direction, and half of its longitudinal direction is inserted between the appliance side front base 37 and the appliance side rear base 38 that constitute the appliance side base 33. The end of the appliance side rear base 38 has a notch 380d to prevent interference between the rib portions 381 and 382 and the positioning plate 41.

[0019] 3.Lamps As shown in FIGS. 7 and 8, the lighting fixture 5 includes at least a first light source unit 51 and a second light source unit 52 arranged in the longitudinal direction. The lamp 5 includes a lamp-side base 53 that holds at least the second light source unit 52, and here, the first light source unit 51 is attached to the lamp-side base 53. The lamp 5 has a light-transmitting cover 54 that covers the front side of the lamp base 53, and an end cover 55 that is provided at the longitudinal end of the lamp base 53. The first light source unit 51 and the second light source unit 52 are housed in the space formed by the lamp base 53, the light-transmitting cover 54, and the end cover 55. The lighting fixture 5 here includes a power supply unit 56 that generates lighting power for the first light source unit 51 and the second light source unit 52 from a commercial power source received via the terminal block 35a of the mounting fixture 3, and a wireless communication unit 57 that receives control signals from a controller not shown. On the other hand, when the lighting fixtures 5 are long and multiple lighting fixtures 5 are connected, the connecting portions of the lighting fixtures 5 have end covers 55 and the like, and the longitudinal ends, i.e., the connecting portions, tend to be dark. By arranging the first light source unit 51 on the longitudinal end side (connecting portion) of the lighting fixtures 5, it is possible to compensate for the amount of light in the connecting portions, which tend to be dark. Each unit will be explained below.

[0020] (1) Lamp base The lamp side base 53 has an elongated shape as shown in Figures 7 and 8. The lamp side base 53 has a constant cross-sectional shape in the longitudinal direction, and is made of, for example, a metal material, and an integrally molded product formed by pultrusion or the like can be used. The lamp side base 53 has at least a second light source mounting portion for mounting the second light source unit 52, a light-transmitting cover mounting portion for mounting the light-transmitting cover 54, and a mounting portion for mounting the lamp 5 to the mounting fixture 3. In addition to the second light source mounting portion, the light-transmitting cover mounting portion, and the mounting portion, the lamp side base 53 here also has a power supply unit mounting portion for mounting the power supply unit 56 on its back side, and a wireless communication unit mounting portion for mounting the wireless communication unit 57 on its back side.

[0021] 9, the lamp side base 53 has a V-shaped portion 531 that is shaped like the letter "V" and opens on the back side, and the second light source unit 52 is mounted on the surface of the inclined portion of the V-shaped portion 531. In other words, the V-shaped portion 531 constitutes the second light source mounting portion. The lamp side base 53 has a pair of inner extension portions 532 extending outward in the short direction from the opening side end of the V-shaped portion 531, and a pair of erect portions 533 erected on the back side from the outer ends of the short direction of the inner extension portions 532. A power supply unit 56 and a wireless communication unit 57 are mounted in a space defined by the pair of inner extending portions 532 and the standing portion 533. That is, the inner extending portions 532 and the standing portions 533 constitute a power supply unit mounting portion and a wireless communication unit mounting portion. The lamp base 53 has a pair of ribs 534 extending from near the apex of the V-shaped portion 531 to the rear side over the entire length in the longitudinal direction. A screw 569 (see FIG. 7) for fixing the power supply unit 56 and the wireless communication unit 57 is screwed into a groove formed by the two ribs 534. The lamp side base 53 has an L-shaped outer extension portion 536 that extends outward in the short direction from the back end of the standing portion 533 and then bends toward the front, and an L-shaped middle extension portion 537 that extends outward in the short direction from the middle part of the standing portion 533 in the front-to-back direction and then bends toward the back. 3, the cover-side attachment portion 543 of the light-transmitting cover 54 is inserted from the longitudinal direction into a groove portion 538 (see FIG. 9) formed by the outer extension portion 536 and the middle extension portion 537, thereby attaching the light-transmitting cover 54 to the lamp-side base 53. In other words, the outer extension portion 516 and the middle extension portion 517 form a light-transmitting cover attachment portion for attaching the light-transmitting cover 54.

[0022] 9, the lamp side base 53 has a rear extension portion 539 extending rearward from the center portion in the short-side direction of the outer extension portion 536, and a protruding portion 530 protruding in the short-side direction from the center portion in the extension direction of the rear extension portion 539. Here, the protruding portion 530 protrudes outward in the short-side direction. The overhanging portion 530 has an abutting portion 530a that extends in the short direction and abuts against the bent portion 345 of the lamp fixture 34. As shown in Fig. 3, the bent portion 345 of the lamp fixture 34 of the mounting fixture 3 abuts against the abutting portion 530a from the front side, and the lamp side base 53 engages with the mounting fixture 3 (lamp fixture 34). This allows the lamp 5 to be mounted to the mounting fixture 3. In other words, the overhanging portion 530 is also an engaged portion that engages with the engaging portion (bent portion 345) of the mounting fixture 3, and constitutes an attached portion. 3, the protruding portion 530 has an extending portion 530b that extends from the side of the abutting portion 530a where the engagement is released (outer side in the short direction) to the side (front side) of the bent portion 345 of the lamp fixture 34. This makes it possible to prevent the bent portion 345 of the lamp fixture 34, which is in an engaged state, from coming off the abutting portion 530a in the short direction. In this embodiment, a pattern has been disclosed in which the bent portion 345 and the protruding portion 530 are in line contact (point contact in cross section) to form an engaged state, but for example, a pattern in which the bent portion 345 and the protruding portion 530 are in surface contact (line contact in cross section) to form an engaged state may also be used. In this configuration, the engaged state can be maintained more stably than when the bent portion 345 and the protruding portion 530 are in line contact and engaged.

[0023] The lamp side base 53 has a through hole 53a (see FIG. 8) for the second light source holder 58 and a through hole for wiring to supply power to the second light source unit 52. Note that the through hole 53a may be used for wiring.

[0024] (2) Light source unit (2-1) Second light source unit As shown in Figures 9 and 10 (b), the second light source unit 52 comprises a second substrate 521 having a rectangular shape that is long in the longitudinal direction, and a plurality of second LED elements 522 mounted on the second substrate 521, and here also comprises a second connector 523 mounted on the second substrate 521. There are four second light source units 52, and two second light source units 52 are arranged consecutively in the longitudinal direction on each surface of the inclined portion of the V-shaped portion 531 of the lamp-side base 53. The second light source unit 52 is held by the lamp-side base 53 in a state where it is arranged in the V-shaped portion 531 of the lamp-side base 53, by locking both ends of the second substrate 521 in the short direction by a pair of holding portions 581 of the second light source holder 58 arranged in the through-hole of the lamp-side base 53. Therefore, the lamp-side base 53 constitutes a second substrate holder.

[0025] (2-2) First light source unit As shown in (a) of Figure 10, the first light source unit 51 includes a first substrate 511 having a rectangular shape that is long in the longitudinal direction, a plurality of first LED elements 512 (four in this case) mounted on the first substrate 511, and a first connector 513 mounted on the first substrate 511. When viewed from the front side (irradiation surface side) with the translucent cover 518 described below removed, the first substrate 511 is arranged on the back side of the second substrate 521 and overlaps with the second substrate 521, as shown in Figure 10. When viewed from the front side with the translucent cover 518 removed, the first connector 513 is mounted on the first substrate 511 so as to be hidden by the second substrate 521. This prevents the first connector 513 and the wiring connected to the first connector 513 from being cast as a shadow on the translucent cover 54 by the light of the first LED element 512. The four first LED elements 512 are arranged in two rows, two by two, along the longitudinal direction. The first first LED element 512 from the other side in the longitudinal direction (the side where the adjacent lighting device is located) is not hidden by the second substrate 521 when viewed from the front side with the translucent cover 518 removed. This efficiently alleviates the lack of light intensity at the other end in the longitudinal direction. The second first LED element 512 from the other side in the longitudinal direction is hidden or partially hidden by the second substrate 521 when viewed from the front side with the translucent cover 518 removed.

[0026] 10 and 11, the first light source unit 51 has a first board holder 59 that holds a first board 511. The first board holder 59 is attached to the lamp-side base 53. 11(b), the first substrate holder 59 has a rectangular flat plate portion 591 that is long in the longitudinal direction, and the first substrate 511 is fixed to the surface of the flat plate portion 591. Fixing can be done using screws, adhesive, locking, etc. The flat plate portion 591 has a rib portion 591a along the periphery of the first substrate 511, which positions the first substrate 511. 11(a), a portion of the first substrate holder 59 is housed within the lamp-side base 53. That is, the first substrate holder 59 has a housed portion 592 and a protruding portion 593 that protrudes from the lamp-side base 53.

[0027] The accommodated portion 592 has a pair of long side wall portions 592a extending from both ends in the short side direction of the flat plate portion 591 to the front side along the longitudinal direction, and a short side wall portion 592b extending from one side end in the long side direction of the flat plate portion 591 along the short side. In other words, the accommodated portion 592, including the flat plate portion 591, is box-shaped with an open front side. 10(c), the distance between the outer surfaces of the pair of long side wall portions 592a corresponds to the distance between the inner surfaces of the pair of standing portions 533 of the lamp side base 53, and the accommodated portion 592 is disposed (fitted) between the pair of standing portions 533. This makes it possible to connect the first board holder 59 to the other longitudinal end of the lamp side base 53. The front end of the long side wall portion 592a is stepped to avoid interference with the second light source holder 58 of the lamp side base 53. 11(b) and (c), the accommodated portion 592 has a bent portion 592c that bends and extends from the front end of the short side wall portion 592b to one side in the longitudinal direction. A through hole is provided in the bent portion 592c for fixing the first substrate holder 59 to the lamp-side base 53. As shown in FIG. 10(a), a screw 599 is inserted into this through hole and threadedly engages with a pair of rib portions 534 of the V-shaped portion 531 of the lamp-side base 53. Note that a middle portion of the bent portion 592c in the short direction is recessed toward the front side so as to fit into the V-shaped portion 531 of the lamp-side base 53.

[0028] The portion of flat plate portion 591 corresponding to protruding portion 593 protrudes in the longitudinal and lateral directions from the portion of flat plate portion 591 corresponding to accommodated portion 592. This allows first board holder 59 to abut against the end of lamp-side base 53, restricting its position to one side in the longitudinal direction. The part of the flat plate portion 591 corresponding to the protruding portion 593 has a protruding portion 593a that protrudes toward the front at the end in the short direction and at the end on one side in the longitudinal direction (the side of the accommodated portion 592). As shown in FIG. 10(c) and FIG. 11(a), the protruding tip is configured to be flush with the front end of the "L"-shaped outward extending portion 536 of the lamp-side base 53. This allows the light-transmitting cover 54 to be smoothly attached to the lamp-side base 53. Note that, in the part of the flat plate portion 591 corresponding to the protruding portion 593, an end 593b on one side in the longitudinal direction along the short direction abuts against the end face of the lamp-side base 53 in the longitudinal direction. The protruding portion 593 has a pair of extending portions 593c extending from the flat plate portion 591 to the rear side. When viewed in the longitudinal direction, the pair of extending portions 593c have the same shape as the rear extending portions 539 and the protruding portions 530 of the lamp side base 53. This allows the first substrate holder 59 to be locked by the lamp fixture fixture 34 of the mounting fixture 3. One side of the pair of extending portions 593c in the longitudinal direction is formed as a stepped portion 593d where the thickness is reduced, and the stepped portion 593d abuts against the inner surfaces of the pair of rear extending portions 539. This restricts the position of the first substrate holder 59 in the short direction.

[0029] In the first light source unit 51, a translucent cover 518 that covers the first LED element 512 from the front side is provided on the first substrate holder 59. This makes it possible to suppress uneven light caused by a difference in the amount of light between the first light source unit 51 and the second light source unit 52. In addition, it is possible to make it difficult to see the portion where the first LED element 512 is emitting light from outside the translucent cover 54. For example, the inner or outer surface of the light-transmitting cover 518 is subjected to a diffusion treatment or contains diffusion particles, thereby making it possible to suppress uneven brightness due to differences in the amount of light between the first light source unit 51 and the second light source unit 52. The light-transmitting cover 518 has a half cylindrical portion 518a and a quarter spherical portion 518b, which is located on the other side in the longitudinal direction.

[0030] (3) Translucent cover The light-transmitting cover 54 transmits light from the first light source unit 51 and the second light source unit 52 to the outside. As shown in Figures 7 to 9, the light-transmitting cover 54 is long and open at both ends and the back surface, and is made of light-transmitting resin. The light-transmitting cover 54 has a cover main body 541 that covers the first light source unit 51 and the second light source unit 52 from the front side, and a cover-side attachment part 543 for attachment to the lamp-side base 53. As shown in FIG. 3, the cover-side mounting portion 543 engages with the groove portion 538 of the lamp-side base 53.

[0031] (4)Second light source holder As shown in Fig. 3, the second light source holder 58 holds the second light source unit 52 arranged in a "V" shape in the short side direction. The second light source holder 58 is arranged on the back side of the lamp-side base 53 as shown in Fig. 11(b), and as shown in Fig. 10(b), a pair of holders 581, 582 that hold the second light source unit 52 (second substrate 521) are exposed on the front side from through-holes 53a, 53b of the lamp-side base 53. The pair of holders 581, 582 are located on both left and right sides of a central axis extending in the front-to-back direction as shown in Fig. 9.

[0032] (5) End cover 7 and 8, the end covers 55 are fixed to the lamp-side base 53 in a state where they cover both ends of the translucent cover 54. The end covers 55 are located at both ends in the longitudinal direction of the translucent cover 54, and have the same configuration. As shown in Figure 3, the end cover 55 has an end cover main body portion 551 that covers the end of the translucent cover 54, an end cover fitting portion 552 that extends from near the periphery of the end cover main body portion 551 and fits into the end of the translucent cover 54, and a fixing portion 553 (see Figures 7 and 8) for fixing the end cover 554 to the lamp side base 53 with a screw 559.

[0033] (6) Power supply unit The power supply unit 56 includes a power receiving section that receives power from an external power source such as a commercial power source, and a lighting power generating section (not shown) that generates lighting power for the first light source unit 51 and the second light source unit 52 from the received power, all of which are located within a power supply case 560 that is fixed to the lamp side base 53. The lighting power generation unit generates lighting power based on lighting conditions input from the wireless communication unit 57. 7 and 8, the power supply unit 56 is connected to a connector 562 via a harness 561, and the connector 562 is connected to a connector 353 of the harness 351 connected to the terminal block 35a shown in Fig. 2. Note that the connection between the harness 561 and the power supply unit 56 and the connection between the harness 351 and the terminal block 35a are not shown in the drawings. The power supply case 560 has a box shape that is long in the longitudinal direction, and has extensions 564 that extend in the longitudinal direction from both ends of the power supply case 560. The extensions 564 are fixed to the lamp base 53 by screws 569.

[0034] (7) Wireless communication unit The wireless communication unit 57 receives a lighting signal and outputs lighting conditions to the power supply unit 56 of the lighting fixture 5, and when multiple lighting devices 1 are controlled by a controller, determines whether the received signal relates to the lighting device itself. The wireless communication unit 57 receives driving power from the power supply unit 56 via a harness (not shown).

[0035] Second Embodiment Although the lighting devices 1A and 1B of the first embodiment are of a direct mounting type that is directly attached to an installation surface, they may be of other types, such as a recessed type. Illumination devices 101A and 101B of the second embodiment will be described below with reference to Figures 12 to 14. Here, since illumination device 101A and illumination device 101B have substantially the same configuration, when there is no need to distinguish between them, the reference numerals will not be appended with "A" or "B." Note that the same reference numerals will be used for the same configuration as in the first embodiment, and descriptions thereof will be omitted. The terminal blocks 35 of the lighting devices 101A and 101B are connected to the harness 22 that connects to a commercial power source.

[0036] The lighting device 101 includes a mounting fixture 103 embedded in a through-hole 109a in an installation surface 109, and a lighting fixture 5 detachably attached to the mounting fixture 103. The lighting fixture 5 has the same configuration as the lighting fixture 5 in the first embodiment, and therefore a description thereof will be omitted. As shown in Figures 13 and 14, the mounting fixture 103 has a fixture side base 133, and the fixture side base 133 is provided with an inner lamp fixture 134, an outer lamp fixture 135, a terminal block 35 (see Figure 12 (b)), an end cover 136, etc.

[0037] The appliance side base 133 has a first U-shaped portion 141 that is U-shaped and opens on the front side, and a second U-shaped portion 143 that protrudes in a U-shape from the top wall of the first U-shaped portion 141 on the side opposite the opening. As shown in FIG. 13, the first U-shaped portion 141 accommodates the lighting fixture 5 therein, and the second U-shaped portion 143 accommodates the nut 32 for the suspension bolt 31 therein (see FIG. 14(a)). As shown in FIG. 12(b), the terminal block 35 is disposed on the second U-shaped portion 143 side of the appliance-side base 133, and therefore a through-hole for introducing the harness is provided in the appliance-side base 133. The end cover 136 closes the longitudinal end of the instrument side base 133 and is fixed to the instrument side base 133 with screws 145 .

[0038] The lamp fixture of the second embodiment has an inner lamp fixture 134 and an outer lamp fixture 135, as shown in FIG. 13(a) and FIG. A plurality of inner lamp fixtures 134 are provided at intervals in the longitudinal direction. Each inner lamp fixture 134 has a mounting portion 134a attached to the fixture-side base 133 and a pair of protruding portions 134b protruding in the lateral direction. As shown in FIG. 14(a), the mounting portion 134a is attached to a mounting plate 137 fixed to the top wall 141b of the first U-shaped portion 141 using screws 147. As shown in FIG. 13(a), the protruding portions 134b engage with the protruding regions 539a of the rear extending portions 539 and urge the pair of rear extending portions 539 in the lateral direction so as to widen the gap therebetween.

[0039] A plurality of outer lamp fixtures 135 are provided at intervals in the longitudinal direction. Here, they are provided at both ends in the longitudinal direction. As shown in FIG. 13(b), the outer lamp fixture 135 has at least mounting portions 135a and 135b attached to the fixture base 133, a first lamp fixture abutment portion 135c abutting against the rear extension portion 539 of the lamp base 53, and a second lamp fixture abutment portion 135d abutting against the side wall 141a of the first U-shaped portion 141 of the fixture base 133. Here, the outer lamp fixture 135 has a second lamp fixture abutment portion 135e abutting against the translucent cover 54 of the lamp 5, and a connecting portion 135f connecting the first lamp fixture abutment portion 135c and the second lamp fixture abutment portion 135e. The mounting portion 135a is fixed by a screw 145 in a state where it abuts against the top wall 141b of the first U-shaped portion 141 from the inside. The mounting portion 135b is fixed by a screw 147 (see FIG. 14(b)) in a state where it abuts against the end cover 136 from the inside.

[0040] The lamp-side first contact portion 135c extends from the short-side end of the mounting portion 135a toward the front side along the rear extension portion 539. The connecting portion 135f inclines outward in the short-side direction from the front-side end of the lamp-side first contact portion 135c, widening outward toward the front side, and then extends outward in the short-side direction in an "L" shape. The fixture-side second contact portion 135d extends from the outward short-side end of the connecting portion 135f toward the front side along the side wall 141a of the fixture-side base 133. The lamp-side second contact portion 135e inclines inward in the short-side direction from the front-side end of the lamp-side second contact portion 135d, widening inward toward the rear side. The mounting portion 135b extends from the long-side end of the connecting portion 135f toward the rear side. 13, the lamp fixture 134 urges the rear extension portion 539 outward in the short side direction, and the outer lamp fixture 135 supports it from the outside in the short side direction, so that the lamp 5 can be firmly supported. Furthermore, by the inner lamp fixture 134 urging the rear extension portion 539 outward in the short side direction, the outer lamp fixture 135 can also prevent the rear extension portion 539 from being distorted and bent outward.

[0041] Although the first and second embodiments have been described above, the present invention is not limited to these embodiments and may be modified as follows: Also, each embodiment may be combined with a modified embodiment, or modified embodiments may be combined with each other. Furthermore, examples not described in the embodiments and modifications, and design changes within the scope of the present invention are also included in the present invention.

[0042] <Modification> 1. First light source unit In the first embodiment, the two lighting fixtures 5A, 5B are arranged so as to be connected in a straight line. However, as shown in FIG. 15 , for example, the lighting fixture 205 may include a plurality of lighting fixture bases 53, a second light source unit 52 provided on each lighting fixture base 53, a first light source unit 51 provided between the lighting fixture bases 53, and a single translucent cover 254 that covers from the front side two or more second light source units 52 and the first light source units 51 between the second light source units 52. This eliminates the need for an end cover between the first light source units 51, thereby improving light extraction efficiency. Note that, in this case, the shadow of the first connector 513 of the first light source unit 51 can also be prevented from appearing on the translucent cover 254. Furthermore, the lack of light intensity at the longitudinal ends of the lighting fixture 5 can be resolved.

[0043] 2. Installing the lighting fixture in the fixture (1) Total length of the extension The lamp 5 of the first embodiment is attached to the mounting fixture 3 by the engagement portion 340 (bent portion 345) of the lamp fixture fixture 34 of the mounting fixture 3 engaging with the protruding portion 530 of the lamp 5. The protruding portion 530 of the lamp 5 may be provided over the entire longitudinal length of the lamp-side base 53, or may be provided at a location corresponding to the lamp fixture 34 of the mounting fixture 3. When the lamp-side base 53 is formed by extrusion molding or pultrusion molding, it is preferable to provide the protruding portion 530 over the entire length. Furthermore, when the position of the lamp fixture 34 is determined by the installation site, forming the protruding portion 530 over the entire length improves installation workability. In other words, in a lighting device in which the lamp is attached to the mounting fixture after the mounting fixture is installed on the installation surface, if the lamp fixture is fixed (structured so that it cannot be moved longitudinally), the problem of not being able to easily attach the lamp is solved. In a structure that allows the lamp to be easily attached to a mounting fixture equipped with a fixed lamp fixture, the lamp may not have a first light source unit. In other words, in a lighting device that is long in a first direction and includes a light source unit having an LED element on a substrate, a holder that supports the substrate, and a mounting fixture that has a fixture that engages with the holder, the engaged portion of the holder only needs to be located in an area that is longer than the overall length of the fixture in the first direction, and may be located along the entire length in the first direction.

[0044] (2) Structure of the overhang The structure of the protruding portion 530 is not particularly limited as long as it can engage with the engaging portion 340 of the lamp fixture attachment 34. This prevents the lamp 5 from falling off. Furthermore, when the lamp 5 is to be attached at the installation site, the attachment can be easily performed, improving workability. The protruding portion 1530 may be triangular in shape, for example, as shown in (a) of Figure 16, and may have an inclined region 1530a that protrudes in the short direction as it moves away from the mounting device, and a flat region 1530b that extends inward in the short direction from the front end of the inclined region 1530a. The protruding portion 2530 may have a rectangular groove region 2530a that is open on the front side (engagement side), as shown in FIG. 16(b), for example. The engaging portion 340 of the lamp fixture 34 abuts against an abutting portion 2530c, which is the bottom portion constituting the groove region 2530a. The engaging portion 340 of the lamp fixture 34 abuts against the abutting portion 2530c, and has an extending portion 2530b that extends from the side of the abutting portion 2530c where the engaging portion 340 is released (the outward side in the short-side direction) toward the engaging portion 340 of the lamp fixture 34 (the front side). The extending portion 2530b may extend in the front-to-back direction, or may extend outward in the short-side direction at an angle toward the front side (outward) as in the embodiment, or may extend inward in the short-side direction at an angle toward the front side (inward). This prevents the engaging portion 340 from coming off. In other words, this solves the problem of the lamp coming off in a lighting device in which the lamp is detachably attached to a mounting fixture (lamp fixture). Note that if the lamp is designed to be less likely to come off the mounting fixture (lamp fixture), the lamp may not have a first light source unit. In other words, in a lighting device that includes a light source unit having LED elements on a board, a holder that supports the board, and a mounting fixture that is attached by engaging with the holder, the engaged portion of the holder may have an abutting portion that abuts with an engaging portion of the mounting fixture, and an extending portion that extends along the engaging portion from the side of the abutting portion where the abutment of the engaging portion is released. In the embodiment, the lamp fixture 34 engages with the lamp side base 53 from the outer side in the short side direction, but it may be configured to engage from the inner side in the short side direction.

[0045] 3. Mounting fixture In the embodiment, the two pairs of rib portions 382, ​​383 are provided on the fixture-side rear base 38. However, for example, a pair of rib portions may be provided on each side of the center of the short side. One rib portion may be provided on the fixture-side rear base and the other rib portion may be provided on the fixture-side front base, or both rib portions may be provided on the fixture-side front base, or both rib portions may be provided on the fixture-side front base and the fixture-side rear base. This allows a pair of harnesses to be arranged separately on both sides of the short side. In other words, this solves the problem of the lead wiring crossing or getting caught on the lead wiring when attaching or detaching the lighting fixture in a lighting device in which a lighting fixture can be detachably attached to a mounting fixture and which has lead wiring for electrically connecting to other lighting devices. Note that a lighting fixture with lead wiring may not have a first light source unit. In other words, in a lighting device long in a first direction in which a lamp is detachably attached to a mounting fixture, the mounting fixture has a first base (corresponding to the fixture-side front base 37 in the first embodiment) and a second base (corresponding to the fixture-side rear base 38 in the first embodiment) facing each other, and has internal spaces extending in the first direction on both sides of the center in a second direction perpendicular to the first direction, and two harnesses for feeding wiring are separately arranged in two spaced-apart internal spaces on both sides in the second direction. In this case, the internal spaces may be formed by ribs as in the first embodiment, or by recesses (grooves). In particular, it is preferable that a harness connected to a connection portion of a terminal block located on one side in the second direction be arranged in an internal space located on one side in the second direction, and a harness connected to a connection portion of a terminal block located on the other side in the second direction be arranged in an internal space located on the other side in the second direction.

[0046] 4. Lighting equipment The lighting device 1, 101 includes the mounting fixture 3, 103 and the lamp 5, but in the case of the invention relating to the first light source unit 51, the lighting device does not have to be one in which the lamp 5 is attached to the mounting fixture 3, and may be, for example, a lighting device in which the lamp side base is directly attached to the installation surface. In this case, the lighting device may or may not include a power supply unit, a wireless communication unit, a terminal block, etc. [Explanation of symbols]

[0047] 1. Lighting equipment 3 Mounting fixtures 5 Lights 34 Light fixture 35 Terminal block 51 First light source unit 52 Second light source unit 53 Light fixture side base (second board holder) 59 First board holder 511 First board 512 First LED element 513 Connector 531 Second board 532 Second LED element

Claims

1. An elongated lighting device having a first substrate provided with a first connector and a first LED element for connecting to a power supply unit, and a second substrate provided with a second LED element, in a first direction, the first direction being the longitudinal direction, a lamp-side base having the second substrate and an elongated shape that is long in the longitudinal direction; the first substrate is disposed on the back side of the second substrate in a state where the first substrate overlaps the second substrate when viewed from the irradiation surface side; the first connector is mounted on the first substrate in a state where it is hidden by the second substrate when viewed from the irradiation surface side; the first substrate is held by a substrate holder; the second substrate is held by the lamp base, the substrate holder has a flat plate portion on which the first substrate is placed and a protruding portion protruding in the longitudinal direction and the lateral direction of the lamp fixture base, the substrate holder is connectable to an end portion of the lighting fixture base in the longitudinal direction, The end of the substrate holder in the longitudinal direction abuts against the end of the lamp-side base in the longitudinal direction. Lighting equipment.

2. The protruding portion has protruding portions at the end in the short direction and one end in the long direction that protrude toward the front side onto which the first LED element irradiates light. The lighting device according to claim 1 .

3. The lighting fixture side base has a rear extension portion extending to the rear side, the protruding portion has an extending portion extending from the flat plate portion to the rear side, One side of the extended portion in the longitudinal direction is a stepped portion where the thickness is reduced, The step portion abuts against the rear extension portion.

3. The lighting device according to claim 2.

4. A light-transmitting cover that covers the first LED element from the irradiation surface side is provided on the substrate holder. The lighting device according to any one of claims 1 to 3.

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