Light source unit and lighting fixture

Abstract

To provide a light source unit facilitated in work for being mounted on a fixture body: and to provide a lighting fixture.SOLUTION: A light source unit 2 is detachably mounted on a fixture body 3 and includes a mounting part 4, a light source part 20, a spring member 5 and a temporary holding part 6. The mounting part 4 has a long plate-like primary part 41. The light source part 20 is mounted on a first surface 410a of the primary part 41. The spring member 5 is mounted on a second surface 410b of the primary part 41 and has an arm part 52 capable of being hooked on the fixture body 3. The spring member 5 is disposed to a first end part 411 of the primary part 41. A temporary holding part 6 holds the arm part 52 so that at least a tip end 528 of the arm part 52 is located at a position more apart from the first end part 411 than that when the arm part 52 is hooked on the fixture body 3 in a state that the arm part 52 is not hooked on the fixture body 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure generally relates to a light source unit and a lighting fixture. More specifically, it relates to a light source unit that is detachably attached to an appliance body and a lighting fixture.

Background Art

[0002] Patent Document 1 discloses a lighting fixture including a base plate and a fixture, to which a light source unit is detachably attached. The fixture is attached to the base plate and has an arm portion of a torsion coil spring hanging thereon. The fixture has an attachment portion, a standing portion, a support portion, and an inclined portion. The standing portion projects from the attachment portion. A notch for hanging the arm portion is formed in the support portion. The inclined portion connects the standing portion and the support portion. A guiding edge portion is formed in the inclined portion. The guiding edge portion is connected to the notch and guides the arm portion toward the notch.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For a light source unit detachably attached to the above-described lighting fixture (appliance body), it is required that the work of attaching the light source unit to the lighting fixture be made easier.

[0005] An object of the present disclosure is to provide a light source unit and a lighting fixture that make the work of attaching to an appliance body easier.

Means for Solving the Problems

[0006] A light source unit according to one aspect of the present disclosure is a light source unit that is detachably attached to a fixture body. The light source unit comprises a mounting portion, a light source portion, and a spring member. The mounting portion has a long, plate-shaped main portion. The light source portion is provided on a first surface of the main portion. The spring member is provided on a second surface of the main portion opposite to the first surface and has an arm portion that can be hooked onto the fixture body. The main portion has a first end and a second end as a pair of ends in the short direction of the main portion. The spring member is positioned at the first end. The light source unit further comprises a temporary holding portion that holds the arm portion such that, when the arm portion is not hooked onto the fixture body, at least the tip of the arm portion is at a position further from the first end than when the arm portion is hooked onto the fixture body.

[0007] A lighting fixture according to one aspect of this disclosure comprises the above-mentioned light source unit and a fixture body. The fixture body has a mounting device on which the arm portion is hooked. [Effects of the Invention]

[0008] According to this disclosure, there is an advantage in that the process of attaching it to the device body becomes easier. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view of the main part of the light source unit of this embodiment. [Figure 2] Figure 2A is a plan view of the same light source unit when the arm is held by the temporary support. Figure 2B is a plan view of the same light source unit when the arm is hooked onto the fixture body. [Figure 3] Figure 3 is an exploded perspective view of the same lighting fixture. [Figure 4] Figure 4 is a perspective view of the same light source unit. [Figure 5] Figure 5 is an explanatory diagram illustrating the shape of the protruding part shown above. [Figure 6] Figure 6 is a perspective view of the same mounting fixture. [Figure 7] Figure 7A is a cross-sectional view of the same lighting fixture with the light source unit not attached to the fixture body. Figure 7B is a cross-sectional view of the same lighting fixture with the light source unit attached to the fixture body. [Figure 8] Figure 8A is a side view of the same lighting fixture with the light source unit not attached to the fixture body. Figure 8B is a side view of the same lighting fixture with the light source unit attached to the fixture body. [Figure 9] Figures 9A to 9D are explanatory diagrams illustrating the shape of the protruding part in the modified example described above. [Figure 10] Figure 10 is a perspective view of the main part of the light source unit according to the modified example shown above. [Figure 11] Figure 11 is a plan view of the light source unit according to the modified example shown above. [Modes for carrying out the invention]

[0010] The light source unit and lighting fixture according to the embodiments will be described below with reference to the drawings. However, the embodiments described below are only one of many embodiments of this disclosure. The embodiments described below can be modified in various ways depending on the design, etc., as long as the objectives of this disclosure are achieved. In addition, the figures described in the embodiments below are schematic diagrams, and the ratios of the size and thickness of each component in the figures do not necessarily reflect the actual dimensional ratios.

[0011] (Embodiment) (1) Overview The following describes the outline of the light source unit 2 according to this embodiment with reference to Figures 1 to 2B.

[0012] The light source unit 2 according to this embodiment is detachably attached to the fixture body 3. As shown in Figures 1 to 2B, the light source unit 2 comprises a mounting part 4, a light source part 20, a spring member 5, and a temporary holding part 6.

[0013] The attachment part 4 has a long plate-shaped main part 41. As shown in FIGS. 2A and 2B, the main part 41 has a first end part 411 and a second end part 412 as a pair of end parts in the short side direction of the main part 41. As shown in FIG. 1, the light source part 20 is provided on the first surface 410a of the main part 41.

[0014] The spring member 5 is provided on the second surface 410b of the main part 41 opposite to the first surface 410a, and has an arm part 52 that can be hooked on the instrument body 3. The spring member 5 is arranged at the first end part 411 of the main part 41.

[0015] The temporary holding part 6 holds the arm part 52 so that at least the tip 528 of the arm part 52 is at a position farther from the first end part 411 of the main part 41 than when the arm part 52 is hooked on the instrument body 3 in a state where the arm part 52 is not hooked on the instrument body 3. FIG. 2A is a plan view of the light source unit 2 when the arm part 52 is not hooked on the instrument body 3 and is held by the temporary holding part 6. On the other hand, FIG. 2B is a plan view of the light source unit 2 when the arm part 52 is hooked on the instrument body 3. As shown in FIGS. 2A and 2B, in the short side direction D1, the distance X1 between the tip 528 of the arm part 52 and the first end part 411 when the arm part 52 is held by the temporary holding part 6 is larger than the distance X2 between the tip 528 of the arm part 52 and the first end part 411 when the arm part 52 is hooked on the instrument body 3.

[0016] From the above, when an operator who performs the operation of attaching the light source unit 2 to the instrument body 3 puts a finger between the tip 528 and the first end part 411 when the arm part 52 is held by the temporary holding part 6, it becomes easier to pull up the arm part 52. That is, the light source unit 2 of the present embodiment has an advantage that the operation of attaching it to the instrument body 3 becomes easier.

[0017] (2) Detailed configuration Hereinafter, the detailed configurations of the lighting fixture 1 and the light source unit 2 of the present embodiment will be described with reference to FIGS. 1 to 8.

[0018] (2-1) Lighting device As shown in Figure 3, the lighting fixture 1 of this embodiment comprises a light source unit 2 and a fixture body 3.

[0019] In the following explanation, the direction in which the light source unit 2 and the fixture body 3 are aligned (see Figure 3) is defined as the up and down direction. The direction toward the fixture body 3 from the perspective of the light source unit 2 is defined as the "up direction," and the direction toward the light source unit 2 from the perspective of the fixture body 3 is defined as the "down direction." Also, as shown in Figure 1, the short side of the main part 41 of the light source unit 2 is defined as the "short side direction D1," and the long side of the main part 41 of the light source unit 2 is defined as the "long side direction D2." Note that in the short side direction D1, the side approaching the center of the main part 41 of the light source unit 2 in the short side direction D1 is sometimes referred to as the "inside of the short side direction D1," and the side moving away from it is sometimes referred to as the "outside of the short side direction D1." Similarly, in the long side direction D2, the side approaching the center of the main part 41 of the light source unit 2 in the long side direction D2 is sometimes referred to as the "inside of the long side direction D2," and the side moving away from it is sometimes referred to as the "outside of the long side direction D2."

[0020] The lighting fixture 1 of this embodiment is installed on the ceiling surface, which serves as the installation surface. The ceiling surface is the underside of the ceiling panel, which is a structural element. In this embodiment, the ceiling surface is parallel to the horizontal plane, but in this disclosure, it may be inclined with respect to the horizontal plane, such as a sloped ceiling. In short, the installation surface according to this disclosure is not limited to the horizontal plane. The lighting fixture 1 of this embodiment is a recessed type lighting fixture 1 that is mostly passed through a through hole formed in the ceiling panel. However, in this disclosure, the lighting fixture 1 is not limited to a recessed type, but may also be a surface-mounted type lighting fixture 1 that is directly attached to the installation surface.

[0021] (2-2) Light source unit The light source unit 2 emits light. The light source unit 2 is attached to the fixture body 3. The light source unit 2 is attached to the fixture body 3 in a removable manner. In short, the light source unit 2 is detachably attached to the fixture body 3.

[0022] As shown in Figure 4, the light source unit 2 of this embodiment includes a mounting section 4, a light source section 20, a power supply unit 21, a plurality (in this case, two) of protruding sections 22, and a cover 23.

[0023] (2-2-1) Mounting section The mounting section 4 is the part for attaching the light source section 20, the power supply unit 21, and the cover 23 to the fixture body 3. As shown in Figure 4, the mounting section 4 of this embodiment has a main section 41, a pair of side wall sections 42 (see Figures 2A and 2B), a plurality (two in this case) of fasteners 43, and a plurality (two in this case) of spring members 5.

[0024] (Main part) The main part 41 is the part to which at least the light source unit 20 is fixed. In this embodiment, the main part 41 is to which the light source unit 20, the power supply unit 21, a plurality of fasteners 43, and a plurality of spring members 5 are fixed. As shown in Figure 4, the main part 41 is a long plate. More specifically, the main part 41 is a long metal plate. In this embodiment, the main part 41 is the bottom of the mounting part 4.

[0025] As shown in Figure 1, the main body 41 has a first surface 410a and a second surface 410b that are opposite each other in the vertical direction. The first surface 410a is the lower surface of the main body 41 and is on which the light source unit 20 is provided. On the other hand, the second surface 410b is the upper surface of the main body 41 and is on which the power supply unit 21, a plurality of fasteners 43 and a plurality of spring members 5 are provided.

[0026] As shown in Figures A and 2B, the main portion 41 has a first end 411 and a second end 412 as a pair of ends in the short direction D1 of the main portion 41.

[0027] (Side wall section) The pair of side wall portions 42 project upward from at least a portion of the main portion 41 to reinforce the main portion 41 and also serve to support the cover 23. In this embodiment, one of the pair of side wall portions 42 projects upward from the first end 411 of the main portion 41, and the other of the pair of side wall portions 42 projects upward from the second end 412 of the main portion 41. Each of the side wall portions 42 in this embodiment is a metal plate. More specifically, the pair of side wall portions 42 are integrally formed with the main portion 41, and the main portion 41 and the pair of side wall portions 42 are formed by bending a single metal plate.

[0028] A hook portion 423 (see Figure 5) is formed at the upper end of each side wall portion 42. The hook portion is a part to which at least a part of the cover 23 is hooked, and supports the cover 23. In this embodiment, the hook portion 423 is formed by winding the upper end of the metal plate that is the side wall portion 42 into a cylindrical shape. In this embodiment, the hook portion 423 is formed along the entire length of the side wall portion 42 in the longitudinal direction D2.

[0029] (Fastener) Each of the multiple fasteners 43 is provided on the second end 412 of the main part 41, as shown in Figures 2A and 2B, and fastens the mounting part 4 to the fixture body 3. The fasteners 43 have the advantage of preventing the light source unit 2 from falling when the second arm part 522, which will be described later, is detached from the fixture body 3. In this embodiment, each of the multiple fasteners 43 comprises a flat fixing piece 431, a rising piece 432, a protruding piece 433, and a retaining piece 434, as shown in Figures 1 to 2B. The fastener 43 in this embodiment is a single metal plate. The fixing piece 431, the rising piece 432, the protruding piece 433, and the retaining piece 434 are formed by bending a single metal plate.

[0030] The fixing piece 431 is attached to the main part 41. The rising piece 432 rises from the fixing piece 431 along the side wall portion 42 on the second end portion 412 side. The protruding piece 433 protrudes outward in the short direction D1 from the upper end of the rising piece 432.

[0031] The retaining piece 434 is provided on the protruding piece 433. The retaining piece 434 is bent downward from the outer end of the protruding piece 433 in the short direction D1. Here, "the outer end of the protruding piece 433 in the short direction D1" refers to the end of the protruding piece 433 that is furthest from the light source unit 2 in the short direction D1. In other words, in this embodiment, the retaining piece 434 is inclined with respect to the protruding piece 433 so that it approaches the light source unit 2 as it goes downwards when the light source unit 2 is attached to the fixture body 3.

[0032] (Spring component) The multiple spring members 5 maintain the position of the light source unit 2 relative to the fixture body 3 when the light source unit 2 is attached to the fixture body 3. The multiple spring members 5 are provided at the first end 411 of the main part 41. That is, the multiple spring members 5 are provided at the first end 411 of the pair of ends in the short direction D1 of the main part 41, opposite to the second end 412 where the fastener 43 is provided.

[0033] The multiple spring members 5 in this embodiment are torsion coil springs. Each of the multiple spring members 5 has a coil portion 51 and a pair of arm portions 52, as shown in Figure 1. Each of the multiple spring members 5 is composed of a single linear member, which in this embodiment is composed of, for example, hard steel wire. However, in this disclosure, each of the multiple spring members 5 is not limited to hard steel wire, but may be composed of piano wire, spring stainless steel, or brass wire, etc.

[0034] The coil portion 51 is the part in which a linear member is wound spirally around a central axis along the short direction D1. In this embodiment, the coil portion 51 is wound multiple times (in this case, three times). In this disclosure, "spiral" means that the linear member is wound once or more times. In this embodiment, the coil portion 51 is hooked and fixed to a fastening portion 422 that protrudes inward in the short direction D1 from the side wall portion 42 on the first end portion 411 side. The fastening portion 422 protrudes from the side wall portion 42 on the first end portion 411 side toward the side wall portion 42 on the second end portion 412 side. Here, the "side wall portion 42 on the first end portion 411 side" is the side wall portion 42 of the pair of side wall portions 42 that protrudes upward from the first end portion 411. Similarly, the "side wall portion 42 on the second end portion 412 side" is the side wall portion 42 of the pair of side wall portions 42 that protrudes upward from the second end portion 412.

[0035] Each of the pair of arm portions 52 is integrally provided at the end of the coil portion 51. The pair of arm portions 52 are movable around a central axis along the short direction D1. In the spring member 5, elastic force is stored in the coil portion 51 as the pair of arm portions 52 move relative to each other. In this embodiment, of the pair of arm portions 52, the arm portion 52 fixed to the mounting portion 4 is called the "first arm portion 521", and the arm portion 52 that can move relative to the first arm portion 521 is called the "second arm portion 522".

[0036] The second arm portion 522 is configured to be hooked onto the fixture body 3. More specifically, the second arm portion 522 is configured to be hooked onto a mounting fixture 9 of the fixture body 3, which will be described later. In this embodiment, the second arm portion 522 extends outward in the longitudinal direction D2 when viewed from above. As shown in Figure 1, the second arm portion 522 has a first extension portion 523, a second extension portion 524, and a retaining portion 525. The second arm portion 522 is a linear member. The first extension portion 523, the second extension portion 524, and the retaining portion 525 are formed by partially bending a straight linear member.

[0037] The first extension portion 523 is integrally provided at the end of the linear member forming the coil portion 51. The first extension portion 523 extends from a part of the outer circumference of the coil portion 51 (in this case, the lower end). In this embodiment, the extension direction of the first extension portion 523 is inclined to be located upward as it moves away from the coil portion 51 in the longitudinal direction D2. When the second arm portion 522 is hooked onto the mounting fixture 9, the first extension portion 523 is in a state that is moved upward from its natural state, and in short, it applies a downward force to the mounting fixture 9. The "natural state" here means a state in which no external force is applied to the spring member 5 around its central axis.

[0038] The first extension portion 523 has a base end 526, which is the end on the coil portion 51 side in the protruding direction of the first extension portion 523. The latching portion 422 indirectly fixes the base end 526 of the second arm portion 522 by fixing the coil portion 51. That is, the base end 526 of the second arm portion 522 is fixed to the mounting portion 4 by the latching portion 422. The second arm portion 522 is movable around a central axis along the short direction D1, with the base end 526 as the center.

[0039] The second extension portion 524 is integrally provided at the end of the first extension portion 523 that is away from the coil portion 51 in the extension direction. In this embodiment, the extension direction of the second extension portion 524 is inclined toward the second surface 410b of the main portion 41 with respect to the extension direction of the first extension portion 523. That is, the second arm portion 522 has a curved portion 527 between the first extension portion 523 and the second extension portion 524. In other words, the curved portion 527 is the curved part between the base end 526 and the tip 528 of the second arm portion 522, which will be described later.

[0040] The retaining portion 525 prevents the second arm portion 522 from detaching from the mounting fixture 9 when the second arm portion 522 is hooked onto the mounting fixture 9. In other words, the retaining portion 525 prevents the light source unit 2 from falling off due to the second arm portion 522 detaching from the mounting fixture 9. The retaining portion 525 is integrally provided at the end of the second extension portion 524 opposite to the first extension portion 523 in the extension direction. In this embodiment, the extension direction of the retaining portion 525 is perpendicular to the extension direction of the second extension portion 524.

[0041] The tip 528 of the second arm portion 522 is the end opposite to the base end 526 of the second arm portion 522. In other words, the tip 528 of the second arm portion 522 is the end opposite to the second extension portion 524 in the extension direction of the retaining portion 525.

[0042] (2-2-2)Protruding part Each of the multiple protrusions 22 is provided on the second arm portion 522 side of the corresponding spring member 5 in the longitudinal direction D2. In this embodiment, each of the multiple protrusions 22 is provided on the outside of the corresponding spring member 5 in the longitudinal direction D2. In the following description, the protrusion 22 shown in Figure 1 will be used as an example.

[0043] As shown in Figure 1, the protruding portion 22 protrudes away from the main portion 41 along the thickness direction (here, the vertical direction) of the main portion 41. Here, "away from the main portion 41 along the thickness direction of the main portion 41" means upward, and is the direction that approaches the device body 3 along the thickness direction of the main portion 41. The protruding portion 22 in this embodiment is a plate member. The protruding portion 22 in this embodiment is integrally formed with the latching portion 422, and the protruding portion 22 and the latching portion 422 are formed by bending a single metal plate.

[0044] As shown in Figure 5, the protruding portion 22 has a groove 223 that opens toward the second arm portion 522, serving as a temporary holding portion 6. In other words, the temporary holding portion 6 is a groove 223 provided on each of the multiple protruding portions 22 and opening toward the second arm portion 522.

[0045] The temporary holding part 6 holds the second arm portion 522 such that, when the second arm portion 522 is not hooked onto the mounting bracket 9 of the fixture body 3 (see Figure 2A), the tip 528 of the second arm portion 522 is further from the first end portion 411 than when the second arm portion 522 is hooked onto the mounting bracket 9 (see Figure 2B). Here, "a position further from the first end portion 411" means, in other words, a position closer to the second end portion 412. Also, here, "when the second arm portion 522 is hooked onto the mounting bracket 9" refers to the case when the light source unit 2 is attached to the fixture body 3.

[0046] In other words, the temporary holding part 6 holds the second arm portion 522 such that the distance X1 (see Figure 2A) when the second arm portion 522 is held by the temporary holding part 6 is greater than the distance X2 (see Figure 2B) when the second arm portion 522 is hooked onto the mounting fixture 9. Distance X1 is the distance in the short direction D1 between the tip 528 of the second arm portion 522 and the side wall portion 42 on the first end 411 side when the arm portion 522 is held by the temporary holding part 6, as shown in Figure 2A. Similarly, distance X2 is the distance in the short direction D1 between the tip 528 of the second arm portion 522 and the side wall portion 42 on the first end 411 side when the second arm portion 522 is hooked onto the mounting fixture 9, as shown in Figure 2B.

[0047] The tip 528 of the second arm portion 522 is closer to the main portion 41 than the curved portion 527 in the thickness direction of the main portion 41 when the second arm portion 522 is held by the temporary holding portion 6. More specifically, the tip 528 of the second arm portion 522 is closer to the second surface 410b of the main portion 41 than the curved portion 527 in the thickness direction of the main portion 41 when the second arm portion 522 is held by the temporary holding portion 6. This configuration has the advantage that it makes it easier for the worker to pull up the second arm portion 522.

[0048] More specifically, as shown in Figure 1, the temporary holding part 6 of this embodiment holds the second arm portion 522 by fitting the second arm portion 522 into the groove portion 223. That is, the depth of the groove portion 223 in this embodiment is approximately the same as the wire diameter of the second arm portion 522. Here, "depth of the groove portion 223" refers to the dimension along the vertical direction of the groove portion 223, and "wire diameter of the second arm portion 522" refers to the diameter of the cross-section of the linear member that is the second arm portion 522. It is desirable that the depth of the groove portion 223 be 1 / 3 or more of the wire diameter of the second arm portion 522. As a result, the temporary holding part 6 has the advantage of being able to hold the second arm portion 522 more stably. However, in this disclosure, the depth of the groove portion 223 may be less than 1 / 3 of the wire diameter of the second arm portion 522. In this case, the temporary holding portion 6 holds the second arm portion 522 by having the second arm portion 522 rest on the groove portion 223.

[0049] The groove 223 is located in the short direction D1 at a position further from the first end 411 than the tip 528 of the second arm 522 when the second arm 522 is hooked onto the mounting bracket 9 of the fixture body 3. In other words, the groove 223 is located in the short direction D1 at a position further from the first end 411 than the support portion 94, which will be described later, to which the second arm 522 hooks. Here, "a position further from the first end 411 than the support portion 94 in the short direction D1" means a position closer to the second end 412 than the support portion 94 in the short direction D1.

[0050] Furthermore, the temporary holding portion 6 of this embodiment holds the second arm portion 522 by fitting the second arm portion 522 into the groove portion 223, so that the tip 528 of the second arm portion 522 is located further from the first end portion 411 than the base end portion 526. That is, the groove portion 223 is provided in the short direction D1 at a position further from the first end portion 411 than the base end portion 526 of the second arm portion 522.

[0051] In this embodiment, as shown in Figure 5, the protruding portion 22 has an extended portion 222 that extends away from the main portion 41, and the groove portion 223 is provided in the extended portion 222. As a result, the temporary holding portion 6 can hold the second arm portion 522 at a higher position in the vertical direction, which has the effect of making it easier for the worker to pull up the second arm portion 522. Therefore, the light source unit 2 has the advantage of being easier to attach to the fixture body 3.

[0052] The extended portion 222 is the portion of the end face 221 of the protruding portion 22 that extends upward. The end face 221 is one of the multiple end faces of the protruding portion 22 that is located on the side of the second arm portion 522 in the thickness direction of the main portion 41. In other words, the end face 221 is the upper end face of the protruding portion 22. The extended portion 222 is provided at a position further from the first end portion 411 than the support portion 94 of the mounting fixture 9 in the short direction D1.

[0053] As shown in Figure 5, the extension portion 222 of this embodiment is trapezoidal when viewed from the longitudinal direction D2. In this embodiment, the extension portion 222 has a side surface 2221 which is the surface on the side of the first end 411 in the short direction D1, and the side surface 2221 intersects the vertical direction and the short direction D1 such that its upper end is on the side of the second end 412 in the short direction D1 relative to its lower end. That is, the side surface 2221 is an inclined surface whose upper end is on the side of the second end 412 in the short direction D1 relative to its lower end. With this configuration, the worker can slide the second arm portion 522 along the side surface 2221 and lift it up, thereby fitting the second arm portion 522 into the groove portion 223. In other words, the light source unit 2 of this embodiment has the advantage that the temporary holding portion 6 can easily hold the second arm portion 522.

[0054] (2-2-3) Light source section The light source unit 20 is the light source in the light source unit 2. As shown in Figure 1, the light source unit 20 is provided on the first surface 410a of the main unit 41. The light source unit 20 has a substrate having a long length along the longitudinal direction D2 of the main unit 41, and a plurality of solid-state light-emitting elements (light-emitting diodes) mounted on the lower surface of the substrate. The plurality of solid-state light-emitting elements are arranged in multiple rows in the short direction D1 and at equal intervals in the longitudinal direction D2. However, in this disclosure, the solid-state light-emitting elements may be arranged in a single row and may not be at equal intervals. In this disclosure, the solid-state light-emitting elements do not have to be light-emitting diodes, but may be fluorescent lamps or incandescent light bulbs.

[0055] (2-2-4) Power supply unit The power supply unit 21 supplies power to the light source unit 20. In this embodiment, the power supply unit 21 has a printed circuit board on which a power conversion circuit that converts AC voltage or current to DC voltage or current, an input terminal section, a plurality of output terminal sections, and a signal terminal section are mounted. In this embodiment, the printed circuit board is housed in a metal case. The power supply unit 21 is fixed to the mounting section 4, for example, by screwing it in.

[0056] (2-2-5) Cover The cover 23 covers the light source unit 20 from below. In this embodiment, the cover 23 is formed by extrusion molding, but in this disclosure, it may also be formed by resin molding such as injection molding or casting. As shown in Figure 4, the cover 23 in this embodiment has a cover body 231 and a pair of legs 232.

[0057] The cover body 231 is the part that covers the light source unit 20 and allows light emitted from the light source unit 20 to pass through. In this embodiment, the cover body 231 is made of a light-transmitting material such as acrylic resin.

[0058] A pair of legs 232 fix the cover body 231 to the light source unit 20. The pair of legs 232 protrude upward from both ends of the cover body 231 in the short direction D1. A projection (not shown) is formed at the upper end of each leg 232, projecting inward in the short direction D1. The projection extends along the entire length of each leg 232 in the longitudinal direction D2. The projection is fitted into the hook portion 423 of the mounting portion 4 from the outside in the short direction D1 towards the inside. The cover 23 is attached to the mounting portion 4 by the projection being hooked onto the hook portion 423 of the mounting portion 4. Therefore, the cover 23 is attached to the mounting portion 4 by the legs 232.

[0059] (2-3) Main body of the device The fixture body 3 is the fixture to which the light source unit 2 is attached. In this embodiment, the fixture body 3 is installed on the mounting surface, thereby fixing the light source unit 2 to the mounting surface. In this embodiment, when the lighting fixture 1 is installed on the mounting surface, all parts of the fixture body 3 except the lower end (here, the rectangular frame-shaped portion) are located above the mounting surface. In short, the fixture body 3 in this embodiment is fixed in a state where it is embedded in the mounting surface. As shown in Figure 3, the fixture body 3 in this embodiment has a base plate 7, a reflector unit 8, and a plurality (here, two) of mounting fixtures 9.

[0060] (2-3-1) Base plate The base plate 7 is fixed to the mounting surface and supports the reflector unit 8, a plurality of mounting fixtures 9, and the light source unit 2. The base plate 7 in this embodiment comprises a flat plate portion 71 and a pair of holding portions 72.

[0061] The flat plate portion 71 is a flat plate-shaped part of the base plate 7, and in this embodiment, it is the upper end of the base plate 7. The flat plate portion 71 is elongated. The longitudinal direction of the flat plate portion 71 is parallel to the longitudinal direction D2 of the main portion 41. In this embodiment, the flat plate portion 71 is parallel to the installation surface. The flat plate portion 71 has a fixing surface 711 facing upward and a mounting surface 712 facing downward. In other words, the fixing surface 711 is the upper surface of the flat plate portion 71, and the mounting surface 712 is the lower surface of the flat plate portion 71. That is, the mounting surface 712 is the surface opposite to the fixing surface 711 in the thickness direction (here, the vertical direction) of the base plate 7.

[0062] The fixing surface 711 is a surface that is fixed to the installation surface. In this embodiment, the fixing surface 711 is attached to a suspension bolt that extends in the vertical direction. Since the suspension bolt is fixed to the installation surface, the fixing surface 711 in this embodiment is indirectly fixed to the installation surface. However, in this disclosure, the fixing surface 711 may face the installation surface, or it may be directly fixed via fasteners such as screws or bolts, or via adhesive.

[0063] The mounting surface 712 faces the light source unit 2. In this embodiment, the mounting surface 712 is flat. However, in this disclosure, the mounting surface 712 does not have to be flat; for example, it may protrude downward or have an uneven surface.

[0064] A pair of retaining parts 72 hold the reflector unit 8. Each of the pair of retaining parts 72 protrudes downward from each of the ends of the flat plate portion 71 in the short direction D1. More specifically, one of the pair of retaining parts 72 protrudes downward from one of the ends of the flat plate portion 71 in the short direction D1, and the other of the pair of retaining parts 72 protrudes downward from the other of the ends of the flat plate portion 71 in the short direction D1. Each of the pair of retaining parts 72 extends along the entire length in the longitudinal direction D2 at each of the ends of the flat plate portion 71 in the short direction D1. The reflector unit 8 is attached to the pair of retaining parts 72.

[0065] (2-3-2) Reflector Unit The reflector unit 8 reflects the light emitted from the light source unit 2 downwards in the vertical direction, thereby collecting the light. The upper end of the reflector unit 8 is attached to a pair of holding parts 72. In this embodiment, the reflector unit 8 comprises a pair of reflectors 81, a pair of side wall plates 82, a pair of support pieces 83, and a plurality (in this case, two) of openings 84.

[0066] The pair of reflectors 81 constitute the light-collecting portion of the reflector unit 8. In this embodiment, each of the pair of reflectors 81 is flat and inclined so as it goes downwards, it is positioned outward in the short-side direction D1. In short, the pair of reflectors 81 are arranged so that the distance between them increases as they go downwards. In this disclosure, the reflectors 81 are exemplified by plated steel sheets such as galvanized steel sheets, or painted steel sheets. In addition, at least the lower surface of the reflectors 81 may be painted with white paint. This can improve the reflectivity of the reflector unit.

[0067] The pair of side wall plates 82 are members that connect the pair of reflectors 81. The pair of side wall plates 82 are positioned at both ends of the pair of reflectors 81 in the longitudinal direction D2. In this embodiment, each of the side wall plates 82 and the pair of reflectors 81 are fixed to each other, for example, by welding or screwing.

[0068] The pair of support pieces 83 are the parts held by the pair of holding parts 72. The pair of support pieces 83 are integrally provided on the upper ends of the pair of reflectors 81. In this embodiment, the pair of support pieces 83 are formed in an L-shape and protrude outward in the short direction D1 from the upper ends of the pair of reflectors 81. The pair of support pieces 83 are held one-to-one by the pair of holding parts 72, thereby attaching the reflector unit 8 to the base plate 7.

[0069] Each of the multiple openings 84 is into which a corresponding fastener 43 from among the multiple fasteners 43 of the mounting portion 4 is inserted. In this embodiment, the openings 84 are slit-shaped openings. The number of openings 84 is the same as the number of fasteners 43.

[0070] (2-3-3) Mounting hardware The mounting bracket 9 is onto which the light source unit 2 is hooked. More specifically, the mounting bracket 9 is the member onto which the second arm portion 522 of the spring member 5 is hooked. The mounting bracket 9 is provided on the mounting surface 712. The mounting bracket 9 in this embodiment is formed by press-forming a metal plate. In this embodiment, as shown in Figure 3, there are multiple mounting brackets 9 (two in this case), and they are arranged in a line along the longitudinal direction D2. Each of the multiple mounting brackets 9 is positioned closer to the edge than the center in the longitudinal direction D2. In this embodiment, the mounting bracket 9 supports the first end portion 411 of the light source unit 2 by hooking onto the spring member 5. The second end portion 412 of the light source unit 2 is supported by a fastener 43. As shown in Figure 6, the mounting bracket 9 comprises a base portion 91, a rising portion 92, an inclined portion 93, and a support portion 94.

[0071] (Mounting part) The base portion 91 is the part of the mounting fixture 9 that is attached to the mounting surface 712. The base portion 91 in this embodiment has a surface facing the mounting surface 712. The base portion 91 in this embodiment is a rectangular plate body having a long length parallel to the longitudinal direction D2 of the main portion 41 of the light source unit 2. The base portion 91 has a plurality of through holes 912. The plurality of through holes 912 include a plurality (in this case, two) of mounting holes (first mounting holes 912a) formed in a cylindrical shape by burring, and a plurality (in this case, two) of mounting holes (second mounting holes 912b). In this embodiment, the base portion 91 has both first mounting holes 912a and second mounting holes 912b, which allows for screw fastening from both below and above. In this embodiment, the base portion 91 is a rectangular plate, but in this disclosure, it may be formed in the shape of a rod, a cylinder, or a block.

[0072] (Vertical section) The rising portion 92 protrudes from the base 91 along a direction intersecting the mounting surface 712. In this embodiment, the rising portion 92 protrudes downward from one end of the base 91 in the short direction D1 (here, the outer end in the short direction D1) and is composed of a plate integrally provided with the base 91. In this embodiment, the direction in which the rising portion 92 protrudes from the base 91 (hereinafter referred to as the protrusion direction) is perpendicular to the opposing surface 911 of the base 91. Here, "perpendicular" does not mean that the opposing surface 911 and the protrusion direction of the rising portion 92 are strictly 90° apart, but rather that it is within the range of ±5°.

[0073] However, in this disclosure, the projection direction of the rising portion 92 does not have to be perpendicular to the opposing surface 911, and may be inclined with respect to the opposing surface 911. In short, in this disclosure, the rising portion 92 only needs to intersect with the mounting surface 712.

[0074] (slanted part) The inclined portion 93 is the part that connects the rising portion 92 and the support portion 94. In this embodiment, the inclined portion 93 is inclined with respect to the rising portion 92 and the support portion 94. In this embodiment, the inclined portion 93 is made up of a flat plate-shaped body integrally provided with the rising portion 92. However, in this disclosure, the inclined portion 93 does not have to be flat, and may be made up of a plate-shaped body with a circular arc cross-section that protrudes downward in a cylindrical shape, for example.

[0075] Furthermore, in this disclosure, the inclined portion 93 does not have to be inclined with respect to the rising portion 92. That is, the inclined portion 93 only needs to be inclined with respect to at least the support portion 94.

[0076] (Support part) The support portion 94 is the part to which the second arm portion 522 of the spring member 5 hooks. The support portion 94 has a horizontal plate portion 941 and a vertical plate portion 942. The horizontal plate portion 941 is a plate member that extends in the short direction D1 from the lower end of the inclined portion 93. In this embodiment, the horizontal plate portion 941 is integrally provided with the inclined portion 93. The vertical plate portion 942 protrudes upward from the tip of the horizontal plate portion 941. In this embodiment, the vertical plate portion 942 extends in a direction perpendicular to the horizontal plate portion 941. The vertical plate portion 942 is formed along the entire length of the horizontal plate portion 941 in the longitudinal direction D2 and is integrally provided with the horizontal plate portion 941.

[0077] (3) Installation work The process of attaching the light source unit 2 to the fixture body 3 will be explained using Figures 7A to 8B.

[0078] Figure 7A is a cross-sectional view of the lighting fixture 1 when the light source unit 2 is not attached to the fixture body 3. On the other hand, Figure 7B is a cross-sectional view of the lighting fixture 1 when the light source unit 2 is attached to the fixture body 3. Furthermore, Figure 8A is a side view of the lighting fixture 1 when the light source unit 2 is not attached to the fixture body 3, and Figure 8B is a side view of the lighting fixture 1 when the light source unit 2 is attached to the fixture body 3.

[0079] The worker installing the light source unit 2 onto the fixture body 3 pulls up the second arm portion 522 which is held by the temporary holding portion 6. Then, with the fastener 43 inserted into the opening 84 (not shown in Figure 7A), the worker hooks the second arm portion 522 onto the mounting fixture 9 as shown in Figures 7A and 8A. When the second arm portion 522 is hooked onto the mounting fixture 9, the second arm portion 522 exerts an elastic force on the downward side in the vertical direction relative to the mounting fixture 9.

[0080] Subsequently, the worker pushes the light source unit 2 against the fixture body 3 while the second arm portion 522 is hooked onto the mounting fixture 9. As a result, the second arm portion 522 moves while maintaining contact with the mounting fixture 9 as it approaches it. More specifically, as the second arm portion 522 approaches the mounting fixture 9, it moves such that the portion in contact with the mounting fixture 9 shifts towards the coil portion 51.

[0081] When the light source unit 2 is pushed into the fixture body 3, as shown in Figure 7B, the light source unit 2 is positioned in the mounting position relative to the fixture body 3. Once the light source unit 2 is in the mounting position, the second arm portion 522 is positioned relative to the mounting fixture 9, as shown in Figure 8B, and applies a downward force to the mounting fixture 9. This holds the light source unit 2 in the mounting position relative to the fixture body 3. In other words, as shown in Figures 7B and 8B, the light source unit 2 is attached to the fixture body 3.

[0082] (4) Advantages In the light source unit 2, the temporary holding part 6 holds the second arm portion 522 such that, when the second arm portion 522 is not hooked onto the mounting bracket 9 of the fixture body 3, the tip 528 of the second arm portion 522 is located further from the first end portion 411 of the main portion 41 than when the second arm portion 522 is hooked onto the mounting bracket 9 of the fixture body 3.

[0083] According to this structure, the distance X1 (see Figure 2A) from the tip 528 to the first end 411 when the second arm portion 522 is held by the temporary holding portion 6 is greater than the distance X2 (see Figure 2B) from the tip 528 to the first end 411 when the second arm portion 522 is hooked onto the fixture body 3. As a result, it becomes easier for the worker to insert their fingers between the second arm portion 522 and the side wall portion 42 on the first end 411 side when pulling up the second arm portion 522, making it easier for the worker to pull up the second arm portion 522. In other words, the light source unit 2 of this embodiment has the effect that the worker can easily hook the second arm portion 522 onto the mounting fixture 9. That is, the light source unit 2 of this embodiment has the advantage that it is easier to attach to the fixture body 3.

[0084] (5) Variant The following are examples of modifications of the above-described embodiment. These modifications may be implemented by combining them as appropriate.

[0085] In the embodiment described above, the side surface 2221 of the extended portion 222 is an inclined surface such that its upper end is on the side of the second end 412 in the short direction D1 relative to its lower end. However, as shown in Figure 9A, the side surface 2221a of the extended portion 222a may be a surface that is parallel in the vertical direction and perpendicular to the short direction D1. In this case, the extended portion 222a, when viewed from the longitudinal direction D2, is a rectangle in which a pair of opposing sides are parallel in the vertical direction. Here, "a rectangle in which a pair of opposing sides are parallel in the vertical direction" can also be said to be a rectangle in which a pair of opposing sides are parallel to the short direction D1. In other words, the shape of the extended portion 222 is not limited in this disclosure.

[0086] The projection 22 in the above embodiment has an extension 222 with a groove 223, but it does not have to have an extension 222. That is, as shown in Figure 9B, the projection 22a has a flat end face 221a, and a groove 223a, which is a temporary holding part 6, may be provided. Here, "flat" means that there are no undulations in the vertical direction. That is, the end face 221a has no part that protrudes upward. The end face 221a shown in Figure 9B extends along the short direction D1. With this configuration, the worker can fit the second arm part 522, which is located on the end face 221a, into the groove 223a by moving it inward in the short direction D1 while keeping it in contact with the end face 221a. That is, the light source unit 2a has the advantage that the temporary holding part 6 can easily hold the second arm part 522.

[0087] Furthermore, as shown in Figure 9C, in the protruding portion 22b, the end face 221b is inclined to approach the main portion 41 as it moves away from the first end 411 in the short direction D1, and a groove 223b, which is a temporary holding portion 6, may be provided. More specifically, the end face 221b is inclined to approach the second surface 410b of the main portion 41 as it moves away from the first end 411 of the main portion 41 in the short direction D1. With this configuration, the second arm portion 522 located on the end face 221b moves inward while contacting the end face 221b due to the reaction force of the spring member 5 or its own weight, and has the effect of fitting into the groove 223b. In other words, the light source unit 2b has the advantage that the temporary holding portion 6 can more easily hold the second arm portion 522.

[0088] As shown in Figure 9D, the protruding portion 22c may have a wall portion 224 that protrudes away from the main portion 41. The wall portion 224 is located on the second end portion 412 side of the groove portion 223c, which is the temporary holding portion 6, in the short direction D1. That is, the wall portion 224 is the portion on the second end portion 412 side of the groove portion 223c, where the end face 221c protrudes away from the main portion 41. This configuration prevents the second arm portion 522, which is fitted into the groove portion 223c, from moving inward. In other words, the light source unit 2c has the advantage of being able to suppress the second arm portion 522 from coming out of the groove portion 223c.

[0089] In the embodiment described above, when the second arm portion 522 is held by the temporary holding portion 6, the tip 528 of the second arm portion 522 is closer to the main portion 41 than the curved portion 527 in the thickness direction of the main portion 41, but does not come into contact with the main portion 41. However, when the second arm portion 522 is held by the temporary holding portion 6, the tip 528 of the second arm portion 522 may come into contact with the main portion 41. More specifically, when the second arm portion 522 is held by the temporary holding portion 6, the tip 528 of the second arm portion 522 may come into contact with the second surface 410b of the main portion 41. This configuration has the advantage of making it easier for the worker to pull up the second arm portion 522.

[0090] In the above-described embodiment, the temporary holding portion 6 is a groove portion 223, but as shown in Figure 10, it may also be the inner end face 225 in the short direction D1 of the protruding portion 22. That is, the second arm portion 522 may be held such that the tip 528 of the second arm portion 522 is further from the first end portion 411 than when the second arm portion 522 is hooked onto the mounting fixture 9, by the second arm portion 522 contacting the inner end face 225 of the protruding portion 22. In this case, the tip 528 of the second arm portion 522 is further from the first end portion 411 than when the second arm portion 522 is held by fitting into the groove portion 223. The "inner end face 225 in the short direction D1 of the projection 22" referred to here is the end face among the multiple end faces of the projection 22 that is located on the side of the second end 412 in the short direction D1 of the main part 41.

[0091] Furthermore, the temporary holding portion 6 may be the main portion 41 of the mounting portion 4. More specifically, as shown in Figure 11, the second arm portion 522 may be held such that the tip 528 of the second arm portion 522 is fixed to the second surface 410b of the main portion 41, so that the tip 528 of the second arm portion 522 is further from the first end portion 411 than when the second arm portion 522 is hooked onto the mounting fixture 9. Also, in this case, the tip 528 of the second arm portion 522 is further from the first end portion 411 than the tip 528 of the second arm portion 522 is held by contact with the inner end surface 225 of the protruding portion 22. As an example, the tip 528 of the second arm portion 522 is fixed to the main portion 41 by frictional force with the second surface 410b of the main portion 41. The tip 528 of the second arm portion 522 may be fixed to the main portion 41 by hooking into a hole or groove provided on the second surface 410b of the main portion 41.

[0092] In the above-described embodiment, the second arm portion 522 extends outward in the longitudinal direction D2 when viewed from above, but it may also extend inward in the longitudinal direction D2 when viewed from above. In this case, each of the multiple protrusions 22 is provided on the inner side of the corresponding spring member 5 in the longitudinal direction D2.

[0093] Although there are multiple spring members 5 in the above embodiment, there may be only one. Furthermore, when there is only one spring member 5, there may also be only one temporary holding portion 6. Specifically, when there is only one spring member 5, there may also be only one protruding portion 22 having a groove 223.

[0094] (summary) The first embodiment of the light source unit (2, 2a, 2b, 2c) is detachably attached to the fixture body (3) and comprises a mounting portion (4), a light source portion (20), and a spring member (5). The mounting portion (4) has a long, plate-shaped main portion (41). The light source portion (20) is provided on the first surface (410a) of the main portion (41). The spring member (5) is provided on the second surface (410b) of the main portion (41) opposite to the first surface (410a) and has an arm portion (52) that can be hooked onto the fixture body (3). The main portion (41) has a first end portion (411) and a second end portion (412) as a pair of ends in the short direction (D1) of the main portion (41). The spring member (5) is positioned at the first end portion (411). The light source unit (2) of the first embodiment further includes a temporary holding portion (6) for holding the arm portion (52) such that when the arm portion (52) is not hooked onto the fixture body (3), at least the tip (528) of the arm portion (52) is located further from the first end portion (411) than when the arm portion (52) is hooked onto the fixture body (3).

[0095] This embodiment has the advantage of making the process of attaching it to the main body of the device (3) easier.

[0096] The light source unit (2, 2a, 2b, 2c) of the second embodiment further comprises protrusions (22, 22a, 22b, 22c) in the first embodiment. The protrusions (22, 22a, 22b, 22c) protrude in a direction away from the main part (41) along the thickness direction of the main part (41). The temporary holding part (6) is a groove (223, 223a, 223b, 223c) provided on the protrusion (22) and opening toward the arm part (52).

[0097] This embodiment has the advantage of simplifying the structure of the temporary holding part (6).

[0098] In the third embodiment of the light source unit (2) according to the embodiment, in the second embodiment, the protruding portion (22) further has an extended portion (222) that extends away from the main portion (41). The groove portion (223) is provided in the extended portion (222).

[0099] This embodiment has the advantage of making the process of attaching it to the main body of the device (3) easier.

[0100] In the fourth embodiment of the light source unit (2a) according to the embodiment, in the second embodiment, the protruding portion (22a) is located on the arm portion (52) side in the thickness direction and has an end face (221a) on which a groove portion (223a) is provided. The end face (221a) is flat.

[0101] This embodiment has the advantage that the temporary holding portion (6) can easily hold the arm portion (52).

[0102] In the fifth embodiment of the light source unit (2b), in the second embodiment, the projection (22b) is located on the arm portion (52) side in the thickness direction and has an end face (221b) on which a groove (223b) is provided. The end face (221b) is inclined so as it moves away from the first end portion (411) in the short direction (D1) it approaches the main portion (41).

[0103] This embodiment has the advantage that the temporary holding portion (6) can more easily hold the arm portion (52).

[0104] In the sixth embodiment of the light source unit (2c), in any of the second to fifth embodiments, the protruding portion (22c) has a wall portion (224) that protrudes away from the main portion (41). The wall portion (224) is located on the second end portion (412) side of the groove portion (223c) in the short direction (D1).

[0105] This embodiment has the advantage of preventing the arm portion (52) from coming out of the groove portion (223c).

[0106] A light source unit (2, 2a, 2b, 2c) according to the seventh embodiment further comprises a fastener (43) in any of the first to sixth embodiments. The fastener (43) is provided at the second end (412) and fastens the mounting portion (4) to the fixture body (3).

[0107] This embodiment has the advantage of preventing the light source unit (2) from falling when the arm portion (52) is detached from the fixture body (3).

[0108] In the eighth embodiment of the light source unit (2, 2a, 2b, 2c), in any of the first to seventh embodiments, the arm portion (52) has a base end (526) and a curved portion (527). The base end (526) is fixed to the mounting portion (4). The curved portion (527) is the portion that is curved between the base end (526) and the tip (528). When the arm portion (52) is held by the temporary holding portion (6), the tip (528) is closer to the main portion (41) in the thickness direction than the curved portion (527).

[0109] This embodiment has the advantage of making it easier for the worker to lift the arm (52).

[0110] In the ninth embodiment of the light source unit (2, 2a, 2b, 2c), in the eighth embodiment, the tip (528) abuts against the main part (41) when the arm part (52) is held by the temporary holding part (6).

[0111] This embodiment has the advantage of making it easier for the worker to lift the arm (52).

[0112] The lighting fixture (1) of the tenth embodiment comprises a light source unit (2, 2a, 2b, 2c) of any of the first to ninth embodiments and a fixture body (3). The fixture body (3) has a mounting fixture on which an arm portion (52) is hooked.

[0113] This embodiment offers the advantage of providing a lighting fixture (1) equipped with a light source unit (2) that is easier to attach to the fixture body (3). [Explanation of Symbols]

[0114] 1 Lighting fixtures 2 Light source units 20 Light source section 21 Power supply unit 22 Protrusion 221 End face 222 Stretching section 223 Groove 224 Wall 3. Main body of the device 4. Mounting part 41 Main part 410a 1st page 410b 2nd side 411 First end 412 Second end 43 Fasteners 5 Spring member 51 Coil section 52 Arm section 526 proximal end 527 Curved section 528 Tip 6 Temporary holding part 9. Mounting hardware D1 Width direction D2 Longitudinal direction

Claims

1. A light source unit that can be detachably attached to the main body of the fixture, A mounting part having a long, plate-shaped main part, A light source is provided on the first surface of the main body, A spring member having an arm portion that can be hooked onto the main body of the device is provided on the second surface of the main part opposite to the first surface, and the device is further provided, The main portion has a first end and a second end as a pair of ends in the shorter direction of the main portion, The spring member is positioned at the first end, The device further provides a temporary holding portion for holding the arm portion such that, when the arm portion is not hooked onto the device body, at least the tip of the arm portion is located further away from the first end than when the arm portion is hooked onto the device body. Light source unit.

2. The main portion further comprises a projection that protrudes in a direction away from the main portion along the thickness direction of the main portion, The temporary holding portion is a groove provided on the protruding portion and opening toward the arm portion. The light source unit according to claim 1.

3. The aforementioned protruding portion further has an extended portion that extends in a direction away from the main portion, The groove portion is provided in the extended portion, The light source unit according to claim 2.

4. The aforementioned protrusion is located on the arm side in the thickness direction and has an end face on which the groove is provided. The end face is flat. The light source unit according to claim 2.

5. The aforementioned protrusion is located on the arm side in the thickness direction and has an end face on which the groove is provided. The end face is inclined such that it approaches the main part as it moves away from the first end in the shorter direction. The light source unit according to claim 2.

6. The aforementioned protruding portion has a wall portion that protrudes in a direction away from the main portion, The wall portion is located on the second end side of the groove portion in the shorter direction. A light source unit according to any one of claims 2 to 5.

7. The device further includes a fastener provided at the second end for securing the mounting portion to the main body of the device. A light source unit according to any one of claims 1 to 6.

8. The aforementioned arm portion is The base end is fixed to the aforementioned mounting portion, It has a curved portion which is a curved part between the base end and the tip, When the arm portion is held by the temporary holding portion, the tip is closer to the main portion than the curved portion in the thickness direction of the main portion. A light source unit according to any one of claims 1 to 7.

9. The tip contacts the main part when the arm portion is held by the temporary holding portion. The light source unit according to claim 8.

10. A light source unit according to any one of claims 1 to 9, The device comprises a main body having a mounting fixture on which the aforementioned arm portion is hooked, Lighting fixtures.

Images