LED light source unit and lighting fixture

Abstract

To provide an LED light source unit and lighting fixture that can reduce manufacturing costs while improving energy efficiency, extending the lifespan of LEDs, and ensuring uniform LED performance. [Solution] An LED light source unit that is detachable from a long-length lighting fixture body to be installed at a location, comprising a long-length LED substrate on which a plurality of LEDs are arranged along the longitudinal direction, a long-length unit body that is detachably attached to the lighting fixture body, and a power supply device that supplies power to the plurality of LEDs, wherein the unit body comprises a first member capable of holding a mounting fixture for the lighting fixture and a second member capable of holding the LED substrate, and by combining the first member and the second member, a long-length hollow space extending along the longitudinal direction is formed on one of the long sides, and the hollow space is configured to accommodate the power supply device.

Description

Technical Field

[0005]

[0001] The present invention relates to an LED light source unit and a lighting fixture.

Background Art

[0002] Conventionally, as an LED lighting fixture replacing a straight tube fluorescent lamp, there is known a lighting fixture including a long-shaped fixture body attached to a ceiling material by a suspension bolt and a long-shaped light source unit configured to be detachable from the fixture body (Patent Documents 1 and 2). The light source units disclosed in Patent Documents 1 and 2 include an LED substrate on which a plurality of LEDs are mounted, an attachment member for attaching the LED substrate to the fixture body, and a power supply device for supplying lighting power to the plurality of LEDs.

[0003] The attachment member of Patent Document 1 has a housing portion at a portion facing the fixture body, in which at least a part of the suspension bolt and the power supply device are arranged, and the power supply device is arranged at a position not interfering with the suspension bolt in the housing portion. According to such a lighting fixture of Patent Document 1, at least a part of the suspension bolt is arranged in the housing portion of the attachment member, and the power supply device is arranged at a position not interfering with the suspension bolt in the housing portion, so that it is possible to suppress the height dimension of the entire fixture.

[0004] Further, the attachment member (unit body) disclosed in Patent Document 2 has a long and metal-made hollow space for housing the power supply device at one long side portion, and an upper surface side housing recess for housing a member such as a V-shaped locking spring is formed between the hollow space and the other long side portion. <000001...

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

[0006] However, in the lighting fixture disclosed in Patent Document 1, the power supply unit is positioned between a pair of suspension bolts spaced apart in the longitudinal direction of the fixture body, that is, approximately in the middle of the longitudinal direction of the mounting member housing. As a result, heat from the power supply unit tends to accumulate between the fixture body and the mounting member, potentially leading to localized high temperatures. Consequently, the lighting fixture disclosed in Patent Document 1 suffers from a problem in which the energy efficiency is reduced due to the heat from the power supply unit, leading to a shorter lifespan for the LEDs and uneven LED performance.

[0007] On the other hand, the lighting fixture disclosed in Patent Document 2 has a configuration in which the power supply unit is housed in a hollow space of metal, which allows heat from the power supply unit to be dispersed over a wide area and improves heat dissipation, making it possible to achieve higher energy efficiency, longer LED lifespan, and uniform LED performance. However, the lighting fixture in Patent Document 2 has a problem in that the mounting member (unit body) is a long metal extruded material formed by extruding a metal material such as aluminum, and although it is of high quality, it is difficult to reduce manufacturing costs.

[0008] The present invention aims to provide an LED light source unit and lighting fixture that can reduce manufacturing costs while improving energy efficiency, extending the lifespan of LEDs, and ensuring uniform LED performance. [Means for solving the problem]

[0009] The LED light source unit according to the present invention is an LED light source unit that is detachable from a long-length lighting fixture body that is attached to an installation location, and comprises a long-length LED substrate on which a plurality of LEDs are arranged along the longitudinal direction, a long-length unit body that is detachably attached to the lighting fixture body, and a power supply device that supplies power to the plurality of LEDs, wherein the unit body comprises a first member capable of holding a mounting device for the lighting fixture body and a second member capable of holding the LED substrate, and by combining the first member and the second member, a long-length hollow space extending along the longitudinal direction is formed on one of the long sides, and the hollow space is configured to accommodate the power supply device.

[0010] Furthermore, the LED light source unit according to the present invention may further include a light-transmitting cover that can be locked to a pair of the long sides of the unit body.

[0011] Furthermore, in the LED light source unit according to the present invention, the unit body may be provided with a light-transmitting cover locking portion in the middle of the outer wall on the long side, and the light-transmitting cover locking portion may be configured to lock the light-transmitting cover between itself and the long side.

[0012] The lighting fixture according to the present invention comprises a long lighting fixture body that is attached to an installation location, and an LED light source unit that is detachable from the lighting fixture body, wherein the LED light source unit comprises a long LED substrate on which a plurality of LEDs are arranged along the longitudinal direction, a long unit body that is detachably attached to the lighting fixture body, and a power supply device that supplies power to the plurality of LEDs, wherein the unit body comprises a first member capable of holding a mounting device for the lighting fixture body and a second member capable of holding the LED substrate, and by combining the first member and the second member, a long hollow space extending along the longitudinal direction is formed on one of the long sides, and the hollow space is configured to accommodate the power supply device. [Effects of the Invention]

[0013] According to the present invention, it is possible to reduce manufacturing costs while improving energy efficiency, extending the lifespan of LEDs, and ensuring uniform LED performance. [Brief explanation of the drawing]

[0014] [Figure 1] This is a perspective view showing a schematic configuration of a lighting fixture according to an embodiment of the present invention. [Figure 2] This is a schematic perspective view showing a disassembled lighting fixture according to this embodiment. [Figure 3] This is a perspective view showing the schematic configuration of the LED light source unit according to this embodiment, when disassembled and viewed from below. [Figure 4] Figure 3 is a perspective view showing the schematic configuration of the LED light source unit according to this embodiment, as viewed from above. [Figure 5] This is an enlarged cross-sectional view showing a schematic representation of the cross-section along line AA' in Figure 4. [Figure 6] This is a schematic exploded view showing the unit body according to this embodiment. [Figure 7] Figure 7(a) is a front view showing the configuration of the unit body according to this embodiment, and Figure 7(b) is a perspective view showing the configuration of the unit body according to this embodiment. [Modes for carrying out the invention]

[0015] Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. Note that the following embodiments are not intended to limit the invention as defined in each claim, and not all combinations of features described in the embodiments are necessarily essential to the solution of the invention. Furthermore, in these embodiments, the scale and dimensions of each component may be exaggerated, and some components may be omitted.

[0016] [Configuration of the lighting fixture according to this embodiment] First, referring to FIG. 1 and the like, the lighting fixture 1 according to the present embodiment will be outlined. The lighting fixture 1 according to the present embodiment includes a long lighting fixture main body 10 attached to a predetermined location (installation location), and an LED light source unit 50 that is detachable from the lighting fixture main body 10, and is configured to be attachable to a connection portion (not shown) provided at a predetermined location.

[0017] Note that the lighting fixture 1 according to the present embodiment will be described as being configured to be attachable to a connection portion (not shown) provided mainly on the ceiling of a building such as a house or an office, but is not limited thereto. For example, by providing a connection portion at a location such as a wall surface or a handrail of a building, it may be configured to be attachable to the wall surface or the like. Also, in this specification, the "vertical direction" refers to the vertical direction of the lighting fixture 1. More specifically, in a state where the LED light source unit 50 described later is connected to the lighting fixture main body 10 (that is, the state of the lighting fixture 1), the direction in which the lighting fixture main body 10 is located is described as "upward", and in a state where the LED light source unit 50 is connected to the lighting fixture main body 10, the direction in which the LED light source unit 50 is located is described as "downward". However, the vertical direction in this specification is merely a formal direction defined for convenience of explanation and does not necessarily correspond to the vertical direction in the actual usage situation.

[0018] [Configuration of Lighting Fixture Main Body] The lighting fixture main body 10 includes a base member 20 fixed to the connection portion by various known fixing means (not shown) such as a suspension bolt and a nut, a reflector member 30 attached to the base member 20, and end caps 40 that close both ends in the longitudinal direction of the reflector member 30.

[0019] The base member 20 is formed by subjecting a long metal plate material to sheet metal working such as bending and drilling. As shown in FIG. 2, both side edges (hereinafter referred to as "long side portions") extending along the longitudinal direction are curved outward in the short side direction and downward. Further, on the lower surface of the base member 20, a pair of screw receivers 22 into which the mounting screws 12 can be screwed and a power supply connector 26 for supplying power to the power supply device 90 via a power receiving connector (not shown) of the LED light source unit 50 are provided.

[0020] The pair of screw receivers 22 are provided near one end and the other end in the longitudinal direction of the base member 20, respectively, and are configured to be able to receive the mounting screws 12 for attaching the reflector member 30. The power supply connector 26 is a connector member with wiring that can be electrically connected to the power source of the facility, and is provided at the central portion in the longitudinal direction of the base member 20.

[0021] The reflector member 30 is formed by subjecting a long metal plate material to sheet metal working such as bending and drilling, and is formed in a flat and long box shape with an open upper surface and both longitudinal ends as shown in FIG. 2. On the lower surface of the reflector member 30, a housing recess 32 for housing the LED light source unit 50 is formed over the entire longitudinal direction of the reflector member 30.

[0022] Also, the long side portions of the reflector member 30 are inclined outward in the short side direction and downward from the open edge of the housing recess 32, and are configured to reflect the light emitted from the LED light source unit 50 downward. Here, the reflector member 30 in the present embodiment is formed to have a length approximately the same as the length in the longitudinal direction of the base member 20, while being formed longer than the length in the short side direction of the base member 20. Thereby, when the reflector member 30 is attached to the base member 20 by the mounting screws 12, the base member 20 can be covered by the open edge of the upper surface of the reflector member 30.

[0023] The housing recess 32 is formed with various through-holes, including a screw through-hole 34 for passing the shaft portion of the mounting screw 12 through, a spring engagement hole 36 for engaging the locking spring 80 of the LED light source unit 50, and a connector through-hole 38 for passing the power supply connector 26 through. Here, the spring engagement hole 36 is provided near one end and near the other end in the longitudinal direction of the reflector member 30, and has an elongated hole into which the locking spring 80 of the LED light source unit 50 can be engaged and a notch for inserting and removing the locking spring 80 from the elongated hole.

[0024] The lighting fixture body 10, having the configuration described above, is configured such that when the power supply connector 26 is electrically connected to the power source of the facility, the base member 20 is fixed by various fixing means such as suspension bolts, and the reflector member 30 can be attached to the base member 20 such that the housing recess 32 opens downward. In this state, the lighting fixture body 10 is configured to supply power to the power supply device 90 of the LED light source unit 50 by connecting the LED light source unit 50 to the housing recess 32 and by electrically connecting the power supply connector 26 to the power receiving connector of the LED light source unit 50.

[0025] [LED light source unit configuration] As shown in Figures 2 to 7, the LED light source unit 50 according to this embodiment comprises a long LED substrate 60 on which a plurality of LEDs 62 are arranged along its longitudinal direction, a long unit body 70 that is detachably attached to the lighting fixture body 10, and a power supply device 90 that supplies power to the plurality of LEDs 62. Furthermore, the LED light source unit 50 according to this embodiment comprises a light-transmitting cover 52 configured to cover the LED substrate 60 when the LED substrate 60 is attached to the unit body 70, and side covers 54 that close both ends of the LED light source unit 50 in the longitudinal direction.

[0026] Furthermore, the LED light source unit 50 according to this embodiment includes a power receiving connector (not shown) for electrically connecting the power supply unit 90 and the power supply connector 26 of the lighting fixture body 10. In Figures 3 and 4, the positions of the power supply unit 90, the light-transmitting cover 52, and the side cover 54 are shown offset from the unit body 70 in order to show the internal structure of the LED light source unit 50. Also, in Figure 5, in order to simplify the diagram, components other than the light-transmitting cover 52, the LED substrate 60, the unit body 70, the locking spring 80, the mounting bracket 81a for the locking spring 80, the fixing screw 81b for fixing the mounting bracket 81a to the unit body 70, and the power supply unit 90 are omitted from the illustration.

[0027] As shown in Figures 6 and 7, the unit body 70 comprises a first metal member 71 capable of holding a mounting device (e.g., a locking spring 80, etc.) for the lighting fixture body 10, and a second metal member 75 capable of holding the LED substrate 60. Specifically, the first member 71 has a mounting device fixing area 73 for fixing a mounting device that can be attached to and detached from the lighting fixture body 10, and the second member 75 has a substrate housing area 77 on which the LED substrate 60 can be mounted.

[0028] Furthermore, the unit body 70 is configured such that a long, hollow space 78 extending along the longitudinal direction is formed on one of the longer sides by combining the first member 71 and the second member 75. Specifically, as shown in Figure 6, the unit body 70 is formed by combining the first member 71 and the second member 75, which are configured as separate members. The first member 71 is formed in a long shape that makes up most of the upper surface of the unit body 70, and the second member 75 is formed in a long shape that makes up most of the lower surface of the unit body 70. In this embodiment, the first member 71 and the second member 75 are metal molded products formed by bending and drilling (so-called roll forming) of sheet metal, and are made from a metal material that is inexpensive while having excellent thermal conductivity as a whole, preferably a metal material mainly composed of iron, stainless steel, etc. Furthermore, it is more preferable that the surfaces of the first member 71 and the second member 75 are coated with white paint so that they can reflect light. In this embodiment, the first member 71 and the second member 75 have been described as metal molded products formed by bending and drilling sheet metal, but the invention is not limited to this. For example, the first member 71 and the second member 75 may be made of a lightweight material such as synthetic resin, and if such a material is used, the overall weight of the unit body 70 can be reduced.

[0029] In this embodiment, the unit body 70 is formed by fusing the first member 71 and the second member 75 together, so that the unit body 70 cannot be easily separated. However, it is not limited to this, and for example, the unit body 70 may be configured to be separable by connecting the first member 71 and the second member 75 via a connecting member.

[0030] As shown in Figures 5 and 7, the first member 71 is formed in an elongated shape, extending from one end in the longitudinal direction to the other end in the longitudinal direction, and from one end in the short direction (the left side in Figures 5 and 7) to the other end in the short direction. When combined with the second member 75 (as shown in Figures 5 and 7), it constitutes one of the long sides of the unit body 70.

[0031] Specifically, the first member 71 includes a first translucent cover locking region 72 extending substantially linearly downward from the side edge of the first member 71 and the end on the shorter side of the side edge, a mounting fixture fixing region 73 extending substantially linearly in the shorter side from the lower end of the first translucent cover locking region 72, and a power supply storage region 74 extending in a multi-stage bend outward in the shorter side from the side end of the mounting fixture fixing region 73.

[0032] The first light-transmitting cover locking region 72 is a region that forms the long side of one side (the left side in Figure 5) of the unit body 70, and is a region configured to lock one end of the light-transmitting cover 52. Specifically, the end of the first light-transmitting cover locking region 72 on the short side (the open end of one long side of the unit body 70) is formed in an arc shape that curves outward and downward in the short side, and the light-transmitting cover 52 can be attached to the first member 71 by interlocking the curved portion with the protruding edge 52a of the light-transmitting cover 52, which will be described later.

[0033] Furthermore, as shown in Figures 5 and 6, a first translucent cover locking portion 72a is formed in the longitudinal direction of the first translucent cover locking region 72 to prevent the translucent cover 52 from falling off. Specifically, the first translucent cover locking portion 72a is formed in the middle of the outer wall portion that extends downward from the end on the short side of the side edge of the first member 71, and more specifically, it is formed by bending the middle of the outer wall portion outward in the short direction and upward (towards the open end formed in an arc shape). In this embodiment, the first translucent cover locking portion 72a is provided over the entire longitudinal area of ​​the first member 71, as shown in Figure 7(b), etc. By forming the first translucent cover locking portion 72a over the entire longitudinal area of ​​the first member 71 in this way, it is possible to further reduce the possibility of the translucent cover 52 falling off when the translucent cover 52 is attached to the unit body 70. However, the configuration is not limited to this, and multiple first light-transmitting cover locking portions 72a may be provided along the longitudinal direction of the first member 71 at predetermined intervals, or only one may be provided at a predetermined location along the longitudinal direction of the first member 71.

[0034] The mounting fixture fixing area 73 is a region that includes a mounting member to which a fixing member capable of fixing a locking spring 80 as a mounting fixture can be attached, and a locking member capable of locking the side cover 54 to the LED light source unit 50. Specifically, as shown in Figures 5 to 7, the mounting fixture fixing area 73 includes a locking spring fixing portion 73a provided between the first light-transmitting cover locking area 72 described above and the hollow space 78 described later, a first side cover locking portion 73b provided longitudinally outward from the locking spring fixing portion 73a, a second side cover locking portion 73c provided on the side edge side of the first member 71, and a connector fixing portion 73d provided longitudinally inward from the locking spring fixing portion 73a.

[0035] As shown in Figure 7(b), the locking spring fixing portion 73a is provided at a predetermined distance inward in the longitudinal direction from both ends of the first member 71 in the longitudinal direction. The locking spring fixing portion 73a has an opening at its upper part and is formed in a convex shape with a hollow space, and is configured to receive a fixing screw 81b for fixing the mounting bracket 81a to which the locking spring 80, described later, is attached. Note that the configuration of the locking spring fixing portion 73a is not limited to the configuration described above, and various arbitrary configurations can be adopted as long as they can receive at least the fixing screw 81b for fixing the locking spring 80.

[0036] As shown in Figure 7(b), the first side cover locking portion 73b is provided near both ends in the longitudinal direction of the first member 71, and is formed in an annular shape capable of receiving the engaging projections 54a of the pair of side covers 54, which will be described later. Furthermore, the first side cover locking portion 73b is configured to have a vertical length and a horizontal length approximately the same as the engaging projections 54a of the side cover 54, thereby preventing it from coming loose when it receives the engaging projections 54a.

[0037] The second side cover locking portion 73c is provided on the lower surface and near both ends in the longitudinal direction of the first member 71, and is formed as a flat plate that is inclined downward and inward in the longitudinal direction so that it can be inserted into the notches 54b of the pair of side covers 54.

[0038] In this way, by providing the first member 71 with multiple locking portions in the mounting fixture fixing area 73 for locking a pair of side covers 54, it is possible to minimize the possibility of the side covers 54 falling off when they are attached to the unit body 70. The configuration of the first side cover locking portion 73b and the second side cover locking portion 73c is not limited to the configuration described above, and various known configurations can be adopted as long as they can maintain the state in which the side covers 54 are attached to the unit body 70.

[0039] The connector fixing portion 73d is formed by a part of the first member 71 protruding upward and is formed in a substantially arc shape with an opening in the center. The connector fixing portion 73d is also configured to receive a connector fixing screw (not shown) for fixing a connector mounting fixture (not shown) for attaching a power receiving connector for supplying power to the power supply device 90 (described later) to the unit body 70, through the opening in the center. The configuration of the connector fixing portion 73d is not limited to the configuration described above, and various known configurations can be adopted as long as they are capable of fixing a power receiving connector for supplying power to the power supply device 90.

[0040] The power supply storage area 74 of the first member 71 is a roughly U-shaped region that extends in multiple stages, bending from the end of the mounting fixture fixing area 73 in the short direction toward the long side of the second member 75, which will be described later. It is configured to form a hollow space 78 when combined with a part of the substrate housing area 77 of the second member 75, which will be described later. The details of each component of the power supply storage area 74 will be described in the description of the hollow space 78.

[0041] As shown in Figures 5 and 6, the second member 75 is formed in an elongated shape, extending from one end in the longitudinal direction to the other end in the longitudinal direction, and from the other end in the short direction (the right side in Figures 5 and 7(a)) toward the one end in the short direction. When connected to the first member 71 described above, it constitutes the other long side of the unit body 70.

[0042] Specifically, the second member 75 includes a second translucent cover locking region 76 that extends substantially linearly downward from the side edge of the second member 75 and the end on the shorter side of the side edge, and a substrate housing region 77 that extends substantially linearly inward from the lower end of the second translucent cover locking region 76 in the shorter direction.

[0043] The second light-transmitting cover locking region 76 is a region that forms the long side of the other side (the right side in Figure 5) of the LED light source unit 50, and is also a region configured to lock the other end of the light-transmitting cover 52. Note that the shape of the second light-transmitting cover locking region 76 can be the same as the shape of the first light-transmitting cover locking region 72 described above, but a detailed explanation is omitted.

[0044] Furthermore, the second light-transmitting cover locking region 76 is equipped with a second light-transmitting cover locking portion 76a, similar to the first light-transmitting cover locking region 72 described above. Note that the second light-transmitting cover locking portion 76a can also be made by reversing the shape of the first light-transmitting cover locking portion 72a described above; therefore, a detailed explanation is omitted.

[0045] The substrate housing region 77 is a region formed on the lower side of the second member 75 and is formed in a substantially flat shape extending inward in the short direction from the lower end of the second light-transmitting cover locking region 76. Specifically, the substrate housing region 77 has flange portions 77a provided opposite each other in the short direction at intervals approximately equal to the length of the LED substrate 60 in the short direction, and multiple flange portions 77a are provided at predetermined intervals along the longitudinal direction, and the LED substrate 60 can be housed in the substrate housing recess 77b formed by the flange portions 77a. Furthermore, as shown in Figure 5, the tip of the flange portion 77a is configured to be bent inward in the short direction of the second member 75, and after housing the LED substrate 60 in the substrate housing recess 77b, bending the tip of the flange portion 77a supports both long sides of the LED substrate 60, thereby preventing the LED substrate 60 from falling out.

[0046] Furthermore, a portion of the substrate housing area 77 is combined with the power supply storage area 74 of the first member 71 described above, thereby enabling the formation of a hollow space 78 near the long side of the other side (right side in Figure 5) of the unit body 70.

[0047] The hollow space 78 is a long, rectangular space (power supply housing space) formed by combining the first member 71 and the second member 75 described above, and is configured to accommodate the power supply 90 within this space. Specifically, as shown in Figures 5 and 6, the hollow space 78 is formed in the power supply housing area 74 of the first member 71 by an inner wall portion 78a extending substantially vertically upward from the end in the short direction of the mounting fixture fixing area 73, an upper wall portion 78b extending in a multi-stage bend outward in the short direction from the upper end edge of the inner wall portion 78a, an outer wall portion 78c extending in a substantially vertical bend downward from the tip of the upper wall portion 78b, and a bottom surface portion 78d positioned between the second light-transmitting cover locking area 76 and the substrate housing area 77 of the second member, and is formed as a long, roughly rectangular shape overall.

[0048] Here, as shown in Figure 7(b), an opening 78e is formed in the inner wall portion 78a and the upper wall portion 78b at a location that is substantially the same in the longitudinal direction as the connector fixing portion 73d of the mounting fixture fixing area 73 described above. By forming the opening 78e at the location where the connector fixing portion 73d is located in this way, it is possible to easily perform the work of fixing the power receiving connector (not shown) housed in the hollow space 78. The unit body 70 may further include a cap member (not shown) to close the opening 78e after wiring work or the like has been performed.

[0049] Furthermore, as shown in Figure 7(a), the vertical position of the upper end of the upper wall portion 78b is configured to be approximately the same as the vertical position of the long side portion of the unit body 70. With this configuration, it is possible to support the members for receiving the LED light source unit 50, such as the reflector member 30, not only at two points on the long side portion of the unit body 70 but also at three points including the upper end of the upper wall portion 78b. This makes it possible to stably maintain the state in which the LED light source unit 50 is housed, and also distributes the load on the long side portion of the unit body 70, thereby improving durability.

[0050] Furthermore, as shown in Figure 7(b), it is preferable that the upper wall portion 78b is provided with side cover locking portions 78f at both ends in the longitudinal direction for locking the side cover 54. By providing locking portions for locking the side cover 54 on the upper wall portion 78b in this way, it is possible to further reduce the possibility of the side cover 54 falling off after it has been attached to the unit body 70. In this embodiment, the configuration of the side cover locking portion 78f provided on the upper wall portion 78b can be the same as the configuration of the second side cover locking portion 73c described above, so a detailed explanation is omitted.

[0051] As shown in Figure 7(a), the bottom portion 78d is provided with a substrate fixing portion 78g in a part of its longitudinal direction. The substrate fixing portion 78g is formed in a substantially rectangular shape and is provided projecting upward from the upper surface of the bottom portion 78d, and as shown in Figure 7(b), it is provided so as to coincide in the longitudinal direction with the opening 78e provided in the inner wall portion 78a and the upper wall portion 78b described above. The substrate fixing portion 78g also has an opening at the top, and is configured to receive substrate fixing screws (not shown) for fixing the power supply board 92 of the power supply device 90 through this opening.

[0052] As shown in Figures 5 and 7(a), the hollow space 78 is provided to penetrate the unit body 70 from one end to the other in the longitudinal direction. Furthermore, the hollow space 78 is sized such that when the power supply unit 90 is housed within the hollow space 78, the power supply case member 96 of the power supply unit 90, described later, contacts at least one of the inner wall portion 78a, the upper wall portion 78b, the outer wall portion 78c, and the bottom surface portion 78d, or is close to at least one of these with a small gap between them. Specifically, in the unit body 70 according to this embodiment, the hollow space 78 is configured to have a length in the shorter direction that is approximately one-third of the width direction length of the entire unit body 70.

[0053] As shown in Figure 3, the LED substrate 60 is a long, rectangular printed circuit board having a length in the shorter direction that can be accommodated in the substrate housing area 77 provided in the second member 75 of the unit body 70. The LED substrate 60 may be a single printed circuit board with a length in the longer direction that is approximately the same as the length in the longer direction of the unit body 70, or it may be a plurality of printed circuit boards divided in the longer direction.

[0054] Furthermore, on the underside of the LED substrate 60, two parallel rows of LEDs, each consisting of multiple LEDs 62 aligned along the longitudinal direction, are arranged over substantially the entire length of the substrate. Here, the LED rows on the underside of the LED substrate 60 may be one row or three or more rows. In addition, one end of the LED substrate 60 in the longitudinal direction is electrically connected to a power supply unit 90 by wiring, and the multiple LEDs 62 are configured to light up in an appropriate lighting pattern using power supplied from the power supply unit 90. When the LED substrate 60 consists of multiple printed circuit boards, it is preferable that adjacent printed circuit boards are electrically connected to each other by wiring.

[0055] The locking spring 80 is a substantially V-shaped spring member formed by bending a metal wire. The locking spring 80 according to this embodiment has elasticity that allows it to repeatedly deform between a first state (restored state) in which both ends in the longitudinal direction are separated from each other and the overall shape is substantially V-shaped, and a second state (deformed state) in which it is deformed by an external force applied to both ends in the longitudinal direction toward the inside. In the second state, after passing through the notch of the spring engagement hole 36, the external force is released and it returns to the first state, thereby engaging with the elongated hole of the spring engagement hole 36 and preventing it from falling out. The shape of the locking spring 80 is not limited to the shape described above, and various known shapes can be adopted as long as they can engage with the elongated hole of the spring engagement hole 36.

[0056] Furthermore, in this embodiment, as shown in Figure 4, each locking spring 80 is attached to a locking spring fixing portion 73a provided in the mounting fixture fixing area 73 of the first member 71 of the unit body 70. Specifically, as shown in Figure 5, the mounting bracket 81a attached to the locking spring fixing portion 73a is fixed with a fixing screw 81b, so that the opening direction of both ends of the locking spring 80 in the short direction is approximately parallel to the longitudinal direction of the unit body 70.

[0057] As shown in Figures 3 to 5, the power supply unit 90 is formed in an elongated shape that can be housed in the hollow space 78 of the unit body 70. In this embodiment, the power supply unit 90 is configured to control the illumination of a plurality of LEDs 62 mounted on the LED board 60 in a predetermined lighting pattern using power supplied from the facility's power source via the power supply connector 26 of the lighting fixture body 10 and the power receiving connector (not shown) of the LED light source unit 50.

[0058] Specifically, as shown in Figure 5, the power supply unit 90 comprises a long, rectangular power supply board 92 that can be housed in the hollow space 78, various power supply circuit forming components 94 mounted on the power supply board 92, and a power supply case member 96 that covers the power supply board 92 and the power supply circuit forming components 94. In this embodiment, one end of the power supply unit 90 in the longitudinal direction is electrically connected to the LED board 60 by wiring.

[0059] Here, the power supply board 92 is a long, rectangular printed circuit board having a length in the short direction that is shorter than the length in the short direction of the hollow space 78, and a length in the long direction that does not exceed the length in the long direction of the hollow space 78. The power supply circuit forming components 94 are various circuit components necessary to generate the power to light up the multiple LEDs 62. Furthermore, the power supply case member 96 is a long, approximately semi-cylindrical metal cover member having a radial length that can be tightly inserted into the hollow space 78, and a long length in the long direction that is approximately the same as the length of the power supply board 92, and is configured to cover the periphery of the power supply board 92 except for the longitudinal ends on which the power supply circuit forming components 94 are mounted.

[0060] The longitudinal length of the power supply unit 90 according to this embodiment can be appropriately adjusted, depending on the type and number of LEDs 62, etc., as long as it does not exceed the longitudinal length of the hollow space 78 of the unit body 70. For example, the power supply unit 90 according to this embodiment may be formed to be shorter than the longitudinal length of the hollow space 78 of the unit body 70. In this case, if the longitudinal length of the power supply unit 90 is formed to be shorter than the longitudinal length of the hollow space 78, other devices such as a dimming control device 100 for controlling the dimming of multiple LEDs 62 can be accommodated in the area of ​​the hollow space 78 where the power supply unit 90 is not located.

[0061] The translucent cover 52 is a milky white resin cover member made of a translucent resin material such as polycarbonate or acrylic, and as shown in Figures 3 and 5, it is formed in a long, substantially semi-cylindrical shape with an opening on the surface (top surface) facing the unit body 70. The translucent cover 52 in this embodiment has a length approximately the same as the length of the unit body 70 in the longitudinal direction and is configured to be attachable to the unit body 70. Specifically, the upper end edge (open end edge) of the translucent cover 52 in this embodiment has a protruding edge 52a that extends inward and upward in the short direction in a multi-stage bend over the entire length, and the translucent cover 52 can be attached to the unit body 70 by interlocking the protruding edge 52a with a pair of long sides of the unit body 70 (the open end of the long side of the first member 71 and the open end of the long side of the second member 75 described above).

[0062] As shown in Figures 3 and 4, the side cover 54 is a resin cover member configured to be attachable to one end and the other end of the unit body 70 in the longitudinal direction, respectively. By being attached to the unit body 70 with the light-transmitting cover 52 installed, it is configured to close the longitudinal opening ends of the light-transmitting cover 52 and the unit body 70.

[0063] Specifically, the side cover 54 includes an engaging projection 54a provided in the center in the short direction and notches 54b provided at both ends in the short direction. The engaging projection 54a is formed in substantially the same shape as the first side cover locking portion 73b provided in the mounting fixture fixing area 73 of the first member 71 described above, and is configured to be able to be fitted into the first side cover locking portion 73b. The pair of notches 54b are configured to be able to receive the second side cover locking portion 73c and the side cover locking portion 78f provided on the first member 71 described above.

[0064] As described above, the side cover 54 is equipped with an engaging projection 54a and a notch 54b, which allows it to be attached to and removed from the unit body 70 with simple operation. The configuration of the side cover 54 is not limited to the configuration described above, and various known configurations can be adopted as long as they allow it to be attached to the unit body 70. For example, the side cover 54 may be attached to the unit body 70 by mounting means such as screws.

[0065] Furthermore, in this embodiment, when the side cover 54 is attached to the unit body 70, it is preferable that a predetermined gap (wiring path) is formed between the inner surface of the side cover 54 and the longitudinal end of the unit body 70. With this configuration, the wiring connecting the power supply unit 90 and the LED board 60 can bypass the longitudinal end of the unit body 70 by passing through the gap between the side cover 54 and the unit body 70, thereby reducing the possibility of wiring breakage due to contact between the longitudinal end of the unit body 70 and the wiring. In addition, by forming such a wiring path in a direction perpendicular to the extending direction of the LED board 60 (short direction), it is possible to prevent shadows from being cast by the wiring connecting the power supply unit 90 and the LED board 60 when the lighting fixture 1 is turned on. Furthermore, if the LED light source unit 50 is configured to communicate with an external lighting control controller or the like via wireless communication, it is possible to stabilize the radio wave strength during mutual communication and reduce the possibility of delays, etc., by housing the antenna for the wireless communication within the above-mentioned wiring path.

[0066] [Assembly method of the LED light source unit according to this embodiment] The assembly method of the LED light source unit 50 according to this embodiment will be described in detail below. In the following description, it will be explained that the locking spring 80, etc., is attached to the mounting fixture fixing area 73 of the first member 71 after the unit body 70 has been assembled, but the method is not limited to this, and the unit body 70 may also be assembled by attaching the locking spring 80, etc., to the mounting fixture fixing area 73 of the first member 71 and then connecting the first member and the second member 75.

[0067] When assembling the LED light source unit 50 according to this embodiment, the worker first assembles the unit body 70 by connecting the first member 71 and the second member 75 using various connecting means. Then, the worker attaches the pair of locking springs 80, the power receiving connector and the wiring fixing device 56 and other components to the mounting device fixing area 73 of the first member 71 using various mounting means, and attaches the LED substrate 60, the power supply unit 90 and the light-transmitting cover 52 to the unit body 70. The LED substrate 60 is attached to the unit body 70 by fitting it into the substrate housing recess 77b of the second member 75 and then bending the tip of the flange portion 77a inward in the short direction. The power supply unit 90 is attached by inserting it into the hollow space 78 of the unit body 70 and sliding it toward the other end in the longitudinal direction.

[0068] The light-transmitting cover 52 is attached to the unit body 70 by, for example, engaging one protruding edge 52a with the long side of the first member 71 of the unit body 70, pushing up the light-transmitting cover 52, and using the deformation of the light-transmitting cover 52 to engage the other protruding edge 52a with the long side of the second member 75. The light-transmitting cover 52 can also be attached by sliding it, similar to the LED board 60 and the power supply unit 90.

[0069] Subsequently, side covers 54 are attached to both ends in the longitudinal direction of the unit body 70 and the light-transmitting cover 52 so that the openings at both ends in the longitudinal direction of the unit body 70 and the light-transmitting cover 52 are closed. By following these steps, the LED light source unit 50 according to this embodiment can be assembled.

[0070] [Method for assembling a lighting fixture according to this embodiment] Next, a method for assembling the lighting fixture 1 by attaching the LED light source unit 50 to the lighting fixture body 10 will be described. First, the worker deforms one of the locking springs 80 of the LED light source unit 50 to the second state (deformed state) described above using one hand, inserts it into one of the spring engagement holes 36 of the lighting fixture body 10, and then releases the hand from the locking spring 80, thereby engaging the middle portion of the locking spring 80 with the elongated hole of the spring engagement hole 36. Note that at this time, the locking spring 80 is not completely restored to the first state (restored state). Similarly, the middle portion of the other locking spring 80 of the LED light source unit 50 is engaged with the elongated hole of the other spring engagement hole 36. As a result, the LED light source unit 50 is temporarily attached to the lighting fixture body 10 with a predetermined gap formed between the lighting fixture body 10 and the LED light source unit 50.

[0071] Next, the power supply connector 26 of the lighting fixture body 10 and the power receiving connector of the LED light source unit 50 are connected using the gap between the lighting fixture body 10 and the LED light source unit 50. Then, the LED light source unit 50 is pushed upward in the direction toward the lighting fixture body 10. As a result, each locking spring 80 returns to its first state (restored state) within the elongated holes of each spring engagement hole 36 and engages with each elongated hole, so that the LED light source unit 50 is attached to the lighting fixture body 10 with virtually no gap. Note that the method for removing the LED light source unit 50 can be done by the reverse procedure of the installation procedure described above, so the explanation is omitted.

[0072] [Advantages of the lighting fixture and LED light source unit according to this embodiment] As described above, the lighting fixture 1 and LED light source unit 50 according to this embodiment comprises a long LED substrate 60 on which a plurality of LEDs 62 are arranged along the longitudinal direction, a long unit body 70 that is detachably attached to the lighting fixture body 10, and a power supply device 90 that supplies power to the plurality of LEDs 62. The unit body 70 comprises a first metal member 71 that can hold a mounting fixture for the lighting fixture body 10, and a second metal member 75 that can hold the LED substrate 60. By combining the first member 71 and the second member 75, a long hollow space 78 extending along the longitudinal direction is formed on one of the long sides, and the hollow space 78 is configured to accommodate the power supply device 90.

[0073] With this type of lighting fixture 1 and LED light source unit 50, the first member 71 and second member 75 that form the hollow space 78 in which the power supply unit 90 is housed are made of metal, which allows heat from the power supply unit 90 to be dispersed over a wide area, improving heat dissipation. This makes it possible to improve energy efficiency, extend the lifespan of the LEDs 62, and ensure uniform performance of the LEDs 62. Furthermore, by having the hollow space 78 on one of the longer sides of the unit body 70, the width of the unit body 70 can be reduced, while avoiding interference with various components attached to the unit body 70 (for example, the locking spring 80, mounting bracket 81a, fixing screws 81b, and power receiving connector, etc.) and various components that may protrude from the lighting fixture body 10. This allows the entire lighting fixture 1 to be made thinner, and the longitudinal arrangement of the power supply unit 90 within the hollow space 78 can be freely arranged, enabling a power supply board design that is longer and shorter, thereby making the entire lighting fixture 1 even thinner.

[0074] Furthermore, according to the lighting fixture 1 and LED light source unit 50 of this embodiment, since the unit body 70 is formed by combining the first member 71 and the second member 75, it has the advantage of being able to reduce the cost of manufacturing the unit body 70 compared to the case in which the unit body 70 is formed from a single member by extrusion molding of a metal material.

[0075] Furthermore, the lighting fixture 1 and LED light source unit 50 according to this embodiment are further equipped with a light-transmitting cover 52 that can be locked onto a pair of long sides of the unit body 70. With the lighting fixture 1 and LED light source unit 50 having such a configuration, the possibility of the light-transmitting cover 52 falling off when the light-transmitting cover 52 covering the LED substrate 60 is attached to the unit body 70 can be reduced.

[0076] Furthermore, in the lighting fixture 1 and LED light source unit 50 according to this embodiment, the unit body 70 is provided with light-transmitting cover locking parts 72a and 76a in the middle of the outer wall on the long side, and the light-transmitting cover locking parts 72a and 76a are configured to lock the light-transmitting cover 52 between themselves and the long side. With the lighting fixture 1 and LED light source unit 50 having such a configuration, it is possible to maintain the state in which the light-transmitting cover 52 is attached to the unit body 70 more stably, and thus the possibility of the light-transmitting cover 52 falling off can be further reduced.

[0077] [Differentiation] The lighting fixture 1 and LED light source unit 50 according to the present invention are not limited to the embodiments described above, and various modifications can be made without departing from the technical concept of the present invention.

[0078] For example, in the above-described embodiment, the long side of the unit body 70 was described as being formed in an arc shape that curves outward and downward in the short direction. However, the invention is not limited to this, and the long side of the unit body 70 may not be formed in an arc shape, but in a straight line, or in a hook shape that curves downward.

[0079] Furthermore, although the above-described embodiment was explained in which light-transmitting cover locking portions 72a and 76a are provided in the middle of the outer wall extending downward from the long side of the unit body 70, the invention is not limited to this, and the light-transmitting cover locking portions 72a and 76a are not required.

[0080] Furthermore, although the above-described embodiment explains that the LED light source unit 50 is attached to the lighting fixture body 10 by a pair of locking springs 80, the invention is not limited to this, and various known members or structures can be used as means for attaching the LED light source unit 50 to the lighting fixture body 10.

[0081] Furthermore, in the above-described embodiment, the lighting fixture body 10 was described as an inverted Fuji-shaped fixture comprising a base member 20, a reflector member 30, and an end cap 40, and being attached to a connection point having a connection part. However, it is not limited to this, and any fixture for attaching the LED light source unit 50 to the installation location may have any configuration and shape, and may even be embedded in the installation location. [Explanation of Symbols]

[0082] 1: Lighting fixtures 10: Lighting fixture body 12: Mounting screws 20: Base component 22: Screw receiver 26: Power supply connector 30:Reflector plate member 32: Receiving recess 34: Screw through hole 36: Spring engagement hole 38: Connector through-hole 40: End cap 50: LED light source unit 52: Light-transmitting cover 52a: Protruding edge 54: Side cover 54a: Engagement protrusion 54b: Notch 56: Wiring fixture 60: LED board 62: LED 70: Unit body 71: First member 72: First light-transmitting cover locking area 72a: First light-transmitting cover locking part 73: Mounting bracket fixing area 73a: Locking spring fixing part 73b: First side cover locking section 73c: Second side cover locking part 73d: Connector fixing part 74: Power supply storage area 75: Second component 76: Second light-transmitting cover locking area 76a: Second light-transmitting cover locking part 77: Substrate housing area 77a: Flange section 77b: Substrate housing recess 78:Hollow space 78a:Inner wall part 78b: Upper wall part 78c: Exterior wall 78d: Bottom part 78e :Aperture 78f: Side cover locking mechanism 78g: Board fixing part 80: Locking spring 81a: Mounting bracket 81b: Fixing screw 90: Power supply 92: Power supply board 94: Power supply circuit forming components 96: Power supply case components 100: Dimming control device

Claims

1. An LED light source unit that is detachable from a long, rectangular lighting fixture body that is installed at a specific location, A long LED substrate with multiple LEDs arranged along its length, A long, elongated unit body that is detachably attached to the aforementioned lighting fixture body, A power supply device that supplies power to the aforementioned plurality of LEDs and Equipped with, The unit body comprises a first member capable of holding a mounting bracket for the lighting fixture body and a second member capable of holding the LED substrate. By combining the first member and the second member, a long, hollow space extending along the longitudinal direction is formed on one of the longer sides. The aforementioned hollow space is configured to accommodate the power supply device. An LED light source unit characterized by the following features.

2. The LED light source unit further comprises a light-transmitting cover that can be locked to a pair of the long sides of the unit body. The LED light source unit according to feature 1.

3. The unit body is provided with a light-transmitting cover locking portion in the middle of the outer wall on the long side, The light-transmitting cover locking portion is configured to lock the light-transmitting cover between itself and the long side portion. The LED light source unit according to claim 2.

4. A long, rectangular lighting fixture body that is attached to the installation location, A detachable LED light source unit is attached to the aforementioned lighting fixture body. A lighting fixture equipped with, The aforementioned LED light source unit is A long LED substrate with multiple LEDs arranged along its length, A long, elongated unit body that is detachably attached to the aforementioned lighting fixture body, A power supply device that supplies power to the aforementioned plurality of LEDs and Equipped with, The unit body comprises a first member capable of holding a mounting bracket for the lighting fixture body and a second member capable of holding the LED substrate. By combining the first member and the second member, a long, hollow space extending along the longitudinal direction is formed on one of the longer sides. The aforementioned hollow space is configured to accommodate the power supply device. A lighting fixture characterized by the following features.

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