JP7555466B2 - Lighting fixtures - Google Patents

Description

The present invention relates to a lighting fixture, and in particular to a lighting fixture in which the fixture body and the light source unit are separate.

One type of lighting fixture that is placed on a ceiling includes a light source unit and a fixture body that has a recess for accommodating the light source unit (see Patent Document 1). In this lighting fixture, when the mounting spring of the light source unit is hooked onto the spring receiver of the fixture body, the elastic force of the mounting spring draws the light source unit toward the lighting fixture, and the light source unit is accommodated in the fixture body.

JP 2014-078422 A

In the above-mentioned lighting fixture, when the light source unit is housed in the recess of the fixture body, the opening edge of the recess comes into contact with the end of the cover of the light source unit. Here, the opening edge is made of metal, and the cover of the light source unit is made of resin. The above-mentioned elastic force presses the resin part of the light source unit against the opening edge, which is made of metal, so pressure is applied to the resin part, which may cause gradual deformation over long periods of use, for example.

The present invention was made in consideration of these problems, and aims to provide a lighting device that can suppress deformation of the light source unit.

In order to solve the above problems, the lighting fixture of the present invention is a lighting fixture comprising an elongated light source unit and a fixture body to which the light source unit is attached, the fixture body having a storage recess for storing at least a part of the light source unit, the light source unit comprising a light source board on which a plurality of light sources are mounted, a support body to which the light source board is attached, and a cover part attached to the support body so as to cover the light source board, and when the light source unit is attached to the fixture body, the cover part does not contact the opening edge of the storage recess, and the support body contacts the opening edge of the storage recess.

With the above-mentioned configuration, the lighting device according to the present invention prevents the cover of the light source unit from being pressed against the edge of the opening, which makes it possible to prevent deformation of the cover due to pressure being applied to it.

FIG. 1 is a schematic cross-sectional view showing a configuration of a lighting device according to an embodiment of the present invention. FIG. 2 is a perspective view showing the appearance of the lighting fixture of FIG. 1; FIG. 3 is a diagram showing the lighting fixture of FIG. 2 with the fixture body and the light source unit separated from each other; A diagram showing a spring support provided on the instrument body. A diagram showing the configuration of a light source unit. Side view of the cover from the short side FIG. 1A is a perspective view showing an end cap constituting a light source unit; FIG. 1B is a schematic diagram showing a state in which the end cap is attached to the support and wiring covered with a silicon tube is passed through a hole formed by the cutout; FIG. 1A is a diagram showing a mounting spring portion constituting a light source unit; FIG. 1B is a perspective view showing a spring holder constituting the mounting spring portion; and FIG. FIG. 1A is a top view (the side where the light source unit is arranged) showing a support constituting a light source unit; FIG. 1B is a front cross-sectional view of the support as seen from the short side direction. FIG. 1A is a perspective view showing the configuration of a pressing member; FIG. 1B is a schematic diagram showing a support body to which the pressing member is attached as viewed from above; and FIG. 1C is a schematic diagram showing a cross section taken along the line A-A in FIG. FIG. 1A is a side view showing a support body to which an object to be attached is attached according to a modified example of the present invention; FIG. 1B is a top view showing a rib having a thread cut in advance to fasten the screw; FIG. 13 is a perspective view showing a configuration of a pressing member having a sheet pressing member according to a modified example of the present invention;

1. First embodiment
<1.1. Overview>
A lighting fixture 1 according to one embodiment of the present invention will be described below with reference to the drawings. As shown in Fig. 1, the lighting fixture 1 is configured by attaching a light source unit 3 to a fixture body 2. As shown in Fig. 2, the lighting fixture 1 has an elongated shape as an example, is attached to a ceiling surface as an example of an attachment target, and irradiates light into the room.

As shown in FIG. 3, the fixture body 2 has a box-like appearance with a storage recess 22 formed on one surface, and the housing 21 that constitutes the appearance is formed by bending sheet metal. The light source unit 3 is a long member equipped with an LED (Light Emitting Diode) as an example of a light source (see light source 322a, light source 322b, ... in FIG. 1). The light source unit 3 has a resin cover part 33 as shown in FIG. 3. The light source unit 3 is attached in a state in which at least a part of it is accommodated in the storage recess 22 in a direction in which light is irradiated toward the outside of the lighting fixture 1. With regard to the accommodation, the fixture body 2 is provided with spring receivers 24 and 25 on the bottom surface part 221 that faces the opening surface of the storage recess 22. In addition, the light source unit 3 is provided with mounting spring parts 35 and 36 on the surface that faces the bottom surface part 221 when accommodated in the storage recess 22.

When the light source unit 3 is accommodated in the fixture body 2, the user first engages the mounting spring portion 35 with the spring receiver 24, and engages the mounting spring portion 36 with the spring receiver 25. In this state, when the user moves the light source unit 3 toward the bottom surface portion 221 of the accommodation recess 22, the elastic force of the mounting spring portions 35 and 36 pulls the light source unit 3 toward the back of the accommodation recess 22, that is, toward the bottom surface portion 221, and the light source unit 3 is fixed to the fixture body 2 with a part of the light source unit 3 accommodated in the accommodation recess 22. At this time, the support 31 of the light source unit abuts against the opening edge 228 of the fixture body 2. The cover body portion 331, which is a resin part, does not abut against the fixture body 2 and maintains a certain distance GA (see FIG. 1). Therefore, in the lighting fixture 1, the resin part of the light source unit is not pressed against the opening edge made of metal, and there is no problem that the resin part is subjected to pressure and the light source unit 3 is deformed.

The lighting fixture 1 will be described in more detail below. Note that the figures referred to in this specification are schematic, with some of the configuration omitted or exaggerated, in order to facilitate understanding of the present invention. In addition, when describing the configuration of a member having a symmetrical shape, if it would clearly be repetition of the same explanation, only one of the left and right sides may be described to avoid repetition.

<1.2. Instrument body 2>
As shown in FIG. 3 , the device body 2 includes a housing 21 , a spring receiver 24 , a spring receiver 25 , and a power terminal block 27 .

The housing 21 is a box-shaped member with a storage recess 22 formed on one surface, and constitutes the external appearance of the device body 2. The cross-sectional shape of the housing 21 is, for example, a so-called inverted Fuji shape with reflectors 211 and 212 extending from the opening edge 228 of the storage recess 22. Note that the housing 21 may have a shape other than the inverted Fuji shape, such as a trough shape or an open-bottom shape.

2 and 3, the housing recess 22 is formed by long side portions 222 and 223 rising from the long sides of the long bottom portion 221, and short side portions 224 and 225 rising from the short sides of the bottom portion 221. The bottom portion 221 has a plurality of holes along the longitudinal direction for passing electric wires such as the power cable 8 exposed from the ceiling surface 5 for supplying power to the lighting fixture 1. The bottom portion 221 also has two holes near both ends in the longitudinal direction for passing hanging bolts (6a and 7a as an example) exposed from the ceiling surface 5. As shown in FIG. 3, the hanging bolts 6a and 7a are passed through these holes, and then nut members (6b and 7b as an example) are tightened on the hanging bolts 6a and 7a to fix the fixture body 2 to the ceiling surface 5.

On the bottom surface portion 221, the spring receivers 24 and 25 are arranged as described above, and the power terminal block 27 is also arranged. The spring receiver 24 is a spring bracket to which the mounting spring portion 35 is engaged. The spring receiver 24 is a member formed by drilling, bending, etc. a metal plate, and has a hook portion 241 and an insertion hole 242 as shown in FIG. 4. The hook portion 241 has a wide and flat hook shape. In the light source unit locking state described later, the frame portion 351a (see FIG. 8(a)) of the mounting spring 351 is hooked to the hook portion 241. The insertion hole 242 is a substantially rectangular hole, and in the light source unit installation state described later, the frame portion 351a of the mounting spring 351 is inserted. The spring receiver 25 is a spring bracket to which the mounting spring portion 36 is engaged, and has the same configuration as the spring receiver 24. The power terminal block 27 has the function of connecting wires (such as the power cable 8) to connect an external power source and the power supply unit 34.

<1.3. Light source unit 3>
As shown in FIGS. 3 and 5 , the light source unit 3 has a support 31 , a light source section 32 , a cover section 33 , a power supply section 34 , and mounting spring sections 35 and 36 .

<Light source unit 32>
1 and 5, the light source unit 32 is formed by arranging a plurality of light sources 322 (light source 322a, light source 322b, ...) as an example of surface-mounted LEDs in rows at intervals in the longitudinal direction on an elongated light source substrate 321. The number of rows in which the light sources 322 are arranged is two as shown in Fig. 1, but it may be one row or three or more rows. The light source unit 32 is fixed to the support body 31 in a direction in which the light sources 322 are exposed.

<Cover portion 33>
5, the cover portion 33 includes a cover main body portion 331, an end cap 332, and an end cap 333. The cover portion 33 has a function of diffusing the light emitted by the light source 322.

<Cover body portion 331>
The shape of the cover main body 331 is symmetrical when viewed in the short direction. The cover main body 331 is made of a material having diffusive properties (e.g., milky white acrylic resin or polycarbonate resin) and is disposed so as to cover the light source 322 of the light source unit 32. As shown in Fig. 6, the cover main body 331 is an elongated member having a convex arch shape in cross section on the short side, and is formed by extrusion molding.

As shown in FIG. 6, the cover body 331 has a main portion 331a, an engagement portion 331b, and a light guide portion 331c. The main portion 331a is located in the center of the cover body 331 and is a plate-like portion with an arch-shaped cross section. The engagement portion 331b is a portion that protrudes from one end of the main portion 331a and is engaged with the support 31. As an example, the engagement portion 331b is formed in a crank shape that engages with a groove provided in the support 31. The engagement portion 331b is a portion that protrudes from the other end of the main portion 331a and is engaged with the support 31. The engagement portion 331b formed in a crank shape is engaged with a groove provided in the support 31, so that the cover body 331 and the support 31 can be firmly engaged. Note that the shape of the engagement portion 331b is not limited to a crank shape as long as it engages with the support 31.

The light guide portion 331c is continuous with the main portion 331a and extends from the base end portion of the engagement portion 331b. The light guide portion 331c is formed to cover a part of the long side end face of the support body 31 when the cover portion 33 is arranged on the support body 31. This reduces the area of the support body 31 exposed to the outside. The light guide portion 331c also has the function of guiding the light emitted from the light source. This brightens the part where the light emitted from the light source is blocked by the support body 31, and the surrounding area does not become suddenly dark, resulting in a lighting fixture with a good appearance.

The length of the light guide 331c is specified so that when the light source unit 3 is attached to the fixture body 2, the light guide 331c does not come into contact with the fixture body 2 and maintains a certain distance GA (see Figure 1). Therefore, the resin part of the light source unit is not pressed against the metal opening edge, so there is no problem of pressure being applied to the resin part and the light source unit 3 being deformed.

In addition, because the cover portion 33 is made of a resin material as described above, it may expand slightly due to the heat generated when the light source is turned on, and return to its original shape when the light source is turned off. The above-mentioned gap GA is specified so that even if the cover portion 33 expands, it will not come into contact with the fixture body 2. Therefore, there is no problem in that the light guide portion 331c comes into contact with the fixture body 2 due to the expansion of the cover portion 33, causing creaking.

<End caps 332, 333>
As shown in FIG. 5 , the end cap 332 is a member located at the short side end of the cover body 331 , and is fixed to the support 31 without being fixed to the cover body 331 .

As shown in FIG. 7(a), the end cap 332 includes a screw receiving portion 333a and a fixing portion 333b. As shown in FIG. 7(a), the screw receiving portion 333a is a member having a through hole. The fixing portion 333b is a member that is inserted into and fitted into a groove provided in the support 31, and has a through hole with a larger diameter than the through hole of the screw receiving portion 333a. The screw receiving portion 333a and the fixing portion 333b are used to fix the end cap 332 to the support 31. The fixing of the end cap 332 to the support 31 will be described later.

The end cap 332 also has a notch N1. The notch N1 is used to insert the wiring required to connect the light source to the power supply unit 34 (see FIG. 7(b)).

End cap 333 has a similar configuration to end cap 332.

<Power supply unit 34>
The power supply unit 34 has a function of converting AC power supplied from the outside into DC power for driving the light source and supplying it to the light source. The power supply unit 34 is mounted on the upper surface of the support body 31. In this embodiment, the up-down direction is defined as the direction toward the ceiling and the direction toward the floor as viewed from the lighting fixture 1 when the lighting fixture 1 is attached to the ceiling, respectively.

<Mounting spring portions 35, 36>
The mounting spring portion 35 is a member that is attached to the upper surface of the support 31 and engages with the spring receiver 24 of the fixture body 2. The mounting spring portion 35 engages with the spring receiver 24, thereby mounting the light source unit 3 to the fixture body 2. As shown in Fig. 8(a) , the mounting spring portion 35 includes a mounting spring 351 and a spring holding portion 352.

As an example, the mounting spring 351 is a double torsion spring, and is formed by bending a spring wire. The mounting spring 351 includes a frame portion 351a having a substantially U-shape, a coil spring portion 351b that is continuous with the frame portion and is bent into a coil shape, and a hook portion 351c that is continuous with the coil spring portion and is a rod-shaped portion that is hooked to the spring holding portion 352.

The spring holding portion 352 is a member that holds the mounting spring 351 and is fixed to the support 31. The spring holding portion 352 is formed by bending a metal plate. As shown in FIG. 8(b) and FIG. 8(c), the spring holding portion 352 includes a plate portion 352a, a fixing portion 352b, a hole portion 352c, an arch portion 352d, and a protrusion portion 352e. The plate portion 352a is a plate-shaped portion that is fixed to a surface of the support 31 that faces the surface to which the light source board 321 is attached. The fixing portion 352b is a flat portion to which the coil spring portion 351b of the mounting spring 351 is hooked. The hole portion 352c is a hole provided in the plate portion 352a, and a screw or the like is inserted to fix the plate portion 352a to the support 31. The arch portion 352d is a portion that is machined into an arch shape, and the hook portion 351c of the mounting spring 351 is inserted into and hooked onto the arch. The protrusion portion 352e is a portion that is bent and stands up at the end of the plate portion 352a, and its function will be explained later together with the support body 31.

The mounting spring part 36 is a member that engages with the spring receiver 25 of the instrument body 2. The configuration of the mounting spring part 36 is the same as that of the mounting spring part 35.

<Support body 31>
The support 31 is a long plate-shaped member as shown in FIG. 5 and FIG. 9(a) which is a top view. The support 31 is formed by extrusion molding of a metal material such as an aluminum alloy, and functions as a heat sink for dissipating heat generated by the light source unit 32. The shape of the support 31 is symmetrical when viewed from the short side direction. In the following description, the surface of the support 31 and the parts that constitute the support 31 on the side where the light source unit 32 is arranged is referred to as a first surface S1, and the surface opposite to the first surface S1 is referred to as a second surface S2, as shown in FIG. 9(b) which is a front cross-sectional view. When the light source unit 3 is attached to the fixture body 2, the second surface S2 faces the storage recess 22.

As shown in FIG. 9(b), the support 31 includes a bottom plate portion 31a, a side wall portion 31b, a board holder portion 31c, a reflector portion 31d, a locking groove portion 31e, a movement restriction portion 31f, and a spring plate holder portion 31g.

The bottom plate portion 31a is a flat, long plate-like portion in the center of the short side of the support body 31. The light source portion 32 is disposed on the first surface S1 of the bottom plate portion 31a, and the mounting spring portion 35, the mounting spring portion 36, and the power supply portion 34 are disposed on the second surface S2. The length of the short side of the bottom plate portion 31a is slightly longer than the length of the light source board 321 in the short side.

In the following description of the configuration shown in FIG. 9(b), for the sake of convenience, as shown in FIG. 9(b), the side to which the first surface S1 faces is referred to as the bottom, the side to which the second surface S2 faces is referred to as the top, the long side as viewed from the central axis of the bottom plate portion 31a is referred to as the outside, and the side to the central axis as viewed from the long side is referred to as the inside.

The side wall portion 31b is a wall portion that stands up from the long side end of the bottom plate portion 31a. When the light source unit 32 is arranged on the first surface S1 of the support body 31, the side wall portion 31b restricts the movement of the light source unit 32 in the short side direction so that the position in the short side direction does not change.

The board retainer 31c is a plate-like portion that is continuous with the side wall portion 31b and protrudes inward from the lower end portion of the side wall portion 31b. When the light source board 321 is placed on the first surface S1 of the support body 31, the board retainer 31c has the function of restricting the movement of the light source board 321 so that the position of the light source board 321 does not change in the vertical direction.

The reflector portion 31d is a plate-like portion that is continuous with the side wall portion 31b and protrudes outward from the lower end portion of the side wall portion 31b. The first surface S1 of the reflector portion 31d has the function of reflecting light emitted from the light source 322. The first surface S1 of the reflector portion 31d is painted white, for example. The reflector portion 31d is also inclined downward as it goes outward. By inclining the reflector portion 31d in this manner, the bottom plate portion 31a is positioned above the outer end E of the reflector portion 31d, and the bottom plate portion 31a is separated from the cover portion 33. When the light source unit 3 is attached to the fixture body 2, the surface (second surface S2) of the bottom plate portion 31a that faces the bottom surface portion 221 of the storage recess 22 is closer to the bottom surface portion 221 than the surface that contacts the opening edge 228 of the storage recess 22. This can reduce or eliminate the grainy feeling that occurs on the cover body 331 due to the light emitted by each light source 322 and hitting the cover body 331.

The locking groove 31e is a portion provided with a groove D that is continuous with the outer end of the reflector portion 31d and opens on the side where the light source board 321 is attached, as an example of a groove that engages with the engaging portion 331b of the cover portion 33. The locking groove 31e engages with the engaging portion 331b of the cover main body portion 331 to prevent the cover main body portion 331 from coming off the support body 31. The surface CS of the locking groove 31e on the same side as the second surface S2 of the bottom plate portion 31a comes into contact with the opening edge 228.

The movement restricting portion 31f stands upright from inside the portion that contacts the opening edge 228 on the side opposite to the side on which the light source board 321 of the support body 31 is attached, and has the function of restricting the position of the light source unit 3 so that it does not shift in the short direction relative to the fixture body 2 by more than a predetermined length when the support body 31 is attached to the fixture body 2. In other words, as shown in FIG. 1, when the light source unit 3 is attached to the fixture body 2, the movement restricting portion 31f is located inside the storage recess 22. If the light source unit 3 is about to shift by more than a predetermined length in the direction along the short side relative to the fixture body 2, the movement restricting portion 31f will interfere with the long side side portions 222, 223 of the storage recess 22.

The spring plate restraining portion 31g is a plate-shaped portion that protrudes inward from the movement restricting portion 31f. When the mounting spring portion 35 is fixed to the second surface S2 of the support 31, the spring plate restraining portion 31g restricts the upward movement of the end of the protruding portion 352e of the mounting spring portion 35.

1.4. Assembly of light source unit 3
(1) Attaching the light source unit 32 to the support 31 Referring to FIG. 5, when attaching the light source unit 32 to the support 31, the light source unit 32 is slid in the longitudinal direction of the support 31 from the short side of the support 31 so that the long side of the light source board 321 and its vicinity are positioned within the area surrounded by the bottom plate portion 31a, side wall portion 31b, and board holder portion 31c of the support 31 as shown in FIG. 9(b).

(2) Attachment of cover portion 33 to support body 31 With reference to Fig. 5, when attaching cover portion 33 to support body 31, engaging portion 331b of cover portion 33 shown in Fig. 6 is engaged with groove D provided in locking groove portion 31e of support body 31 shown in Fig. 9(b) from the short side of support body 31, and cover body portion 331 is slid in the longitudinal direction of support body 31. This configuration eliminates the need to use separate screws or the like to fix cover portion 33 to support body 31, and reduces the labor required by the worker when fixing.

(3) Attachment of the mounting spring portion 35 and the mounting spring portion 36 to the support body 31 When attaching the mounting spring portion 35 to the support body 31, the mounting spring portion 35 is slid in the longitudinal direction of the support body 31 from the short side of the support body 31 so that the end portion and the protruding portion 352e of the plate portion 352a of the mounting spring portion 35 shown in Fig. 8(c) are positioned between the reflecting plate portion 31d and the spring plate holding portion 31g of the support body 31 shown in Fig. 9(b). Then, after the mounting spring portion 35 has been slid to a predetermined position relative to the support body 31, a screw is inserted into the hole portion 352c of the spring holding portion 352 and screwed to the support body 31.

The protrusion 352e is fitted between the reflector 31d and the spring plate retainer 31g, so that even if the screw inserted through the hole 352c becomes loose, the mounting spring 35 can be prevented from separating from the support 31 and falling off.

The attachment of the mounting spring part 36 to the support body 31 is similar to the attachment of the mounting spring part 35 to the support body 31.

(4) Attachment of the end caps 332 and 333 to the support 31 Referring to Fig. 5, the end cap 332 is attached to the support 31 after the cover portion 33 is attached to the support 31. Referring to Figs. 7(a) and 7(b), when attaching the end cap 332 to the support 31, the end cap 332 is slid in the longitudinal direction of the support 31 from the short side of the support 31 so that the fixing portion 333b of the end cap 332 comes into contact with the second surface S2 of the reflector portion 31d. At this time, the vicinity of the end of the short side of the support 31 is positioned between the screw receiving portion 333a and the fixing portion 333b.

Here, in the support 31, a through hole of the same diameter as the hole diameter of the fixing part 333b is provided in the part overlapping with the through hole of the fixing part 333b. In this state, a tapping screw is tightened from the fixing part 333b side through the through hole of the fixing part 333b and the through hole of the support 31 into the through hole of the screw receiving part 333a. The tapping screw is threaded into the through hole of the screw receiving part 333a. As a result, the support 31 is sandwiched between the screw receiving part 333a and the fixing part 333b, and the end cap 332 and the support 31 are fixed.

The attachment of end cap 333 to support 31 is similar to the attachment of end cap 332 to support 31.

<1.5. Installation of the fixture body 2 on the ceiling, and attachment of the light source unit 3 to the fixture body 2>
The lighting fixture 1 is installed on the ceiling in the following procedure. Note that the lighting fixture 1 may be installed on a bar metal fitting such as a raceway instead of the ceiling.

(1) Referring to FIG. 3, the hanging bolts 6a and 7a extending from the ceiling are passed through the holes in the fixture body 2, and the fixture body 2 is fixed to the ceiling with the hanging bolts 6b and 7b. Note that the fixture body 2 may be fixed from below with screws without using the hanging bolts.

(2) Connect the power cable 8 to the terminal block 27.

(3) The spring 351 of the mounting spring portion 35 on the light source unit 3 side is hooked onto the hook portion 241 (see FIG. 4) of the spring receiver 24 on the fixture body 2 side. This state is called the "light source unit locked state." The mounting spring portion 36 is similarly hooked onto the spring receiver 25.

(4) In the locked state, connect the power cord connector (not shown) extending from the terminal block of the fixture body 3 to the power cord connector (not shown) extending from the light source unit 3.

(5) Push the light source unit 3 upward. Then, the spring 351 enters the insertion hole 242 of the spring receiver 24. The force of the spring pulls the light source unit 3 upward, and the support part 31 of the light source unit 3 is pressed against and comes into contact with the opening edge 228 of the fixture body 2. This state is called the "light source unit installed state," and its cross-sectional view is shown in Figure 1. By pulling and fixing the rigid metal support body to the metal fixture body in this way, gaps are unlikely to occur between the two, and a beautiful appearance can be achieved even when viewed from the side, which is the outside of the lighting fixture.

2. Second embodiment
In the first embodiment, a reflective sheet was not attached to the surface of the light source board 321 on which the light sources 322 are arranged, but it may be attached. In this embodiment, a pressing member 1010 is further provided to prevent the reflective sheet from falling even if it is peeled off. Hereinafter, this embodiment will be described with a focus on the configuration of the pressing member 1010 (see FIG. 10).

As shown in Figures 10(b) and 10(c), the light source unit 32 is placed on the first surface S1 of the bottom plate portion 31a of the support body 31, and a white reflective sheet 1020 with a high light reflectance of, for example, 90% or more is attached to the surface of the light source unit 32 facing the light source 322, and a pressing member 1010 is attached to the exposed surface of the reflective sheet 1020. As shown in Figure 10(b), the reflective sheet 1020 has an opening H10 aligned with the position of the light source 322, so that the reflective sheet 1020 does not cover the light source 322.

As shown in FIG. 10(a), the holding member 1010 includes a holding plate portion 1010a, a rib portion 1010b, a gripping claw 1010c, and a gripping claw 1010d. The holding plate portion 1010a is a flat portion and has a function of holding down the reflective sheet. The rib portion 1010b is a plate-shaped rib standing from the center of the short side of the holding plate portion 1010a, which prevents bending of the holding plate portion 1010a in the longitudinal direction, and is thinner than the short side length of the holding plate portion 1010a to reduce weight. When the holding member 1010 is attached to the support body 31, the gripping claw 1010c is sandwiched between the board holding portion 31c and the bottom plate portion 31a. This restricts the movement of the holding member 1010 so that it does not shift in the vertical direction.

In addition, in the light source board 321, a notch N10 is provided in the vicinity of the portion where the gripping claw 1010c is arranged, as shown in FIG. 10(b), which is shaped to match the gripping claw 1010c. Since the gripping claw 1010c is located in this notch N10 portion, the gripping claw 1010c and the pressing member 1010 are restricted from moving in the longitudinal direction of the support body 31. Even if the light source board 321 does not have the notch N10 portion, the pressing member 1010 can be used, for example, by thinning the gripping claw 1010c.

When the holding member 1010 is attached to the support 31, the gripping claws 1010d and the gripping claws 1010c clamp the board holding portion 31c. This restricts the movement of the holding member 1010.

<3. Third embodiment>
Since the support 31 in the first embodiment is a long member, it may bend especially in the longitudinal direction, and it is more preferable to reinforce it to prevent bending. For this reason, the support 1000 according to this embodiment is provided with ribs 1100 and 1101 on the second surface S2 of the reflector portion 31d of the support 31 as shown in FIG. 11(a).

Ribs 1100 and 1101 are erected in the longitudinal direction from one short side of support 1000 to the other short side. This makes support 1000 reinforced so that it is less likely to bend in the longitudinal direction.

In the first embodiment, when a mounting target component such as the mounting spring portion 35 is screwed to the support body 31, the screw is screwed to the reflector portion 31d of the support body 31. Because the reflector portion 31d is inclined with respect to the bottom plate portion 31a, in order to screw the reflector portion 31d perpendicularly, the screw must be screwed in an oblique direction with the bottom plate portion 31a as the reference, which makes it difficult to apply force to the screw and may reduce work efficiency.

However, the line connecting the upper end of the rib 1100 and the upper end of the rib 1101 is parallel to the bottom plate portion 31a. The mounting target member 1120, such as the mounting spring portion 35, is disposed across the bottom plate portion 31a, the rib 1100, and the rib 1101. The screw fastening position in the mounting target member 1120 is a position corresponding to the position between the rib 1100 and the rib 1101, and a hole is pre-drilled at this position. In addition, a screw hole is formed by pre-threading (threading N1100 and N1101 in FIG. 11(b)) at the position between the rib 1100 and the rib 1101 where the screw B is to be tightened. The screw B is inserted into this screw hole and tightened into the screw holes of the rib 1100 and the rib 1101, so that the mounting target member 1120 and the support body 1100 are fixed in close contact with each other.

The screw-fastening position of the mounting target component 1120 is parallel to the bottom plate portion 31a, so the worker who fastens the screws can fasten the screws vertically using the bottom plate portion 31a as a reference. This makes it easier to apply force to the screws compared to when the screws are fastened at an angle to the bottom plate portion 31a, improving work efficiency.

In addition, as described above, it is also possible to screw the attachment target member to the support 31 by screwing a tapping screw between the ribs 1100 and 1101 without threading between the ribs 1100 and 1101 in advance.

4. Modifications and Others
The above describes an embodiment of the lighting fixture according to the present invention. However, the exemplified lighting fixture can be modified, for example, as described below, and it goes without saying that the present invention is not limited to the lighting fixture as shown in the above embodiment.

(1) In the above embodiment, wireless communication was not described, but a device for wireless communication may be arranged on the second surface S2 side of the support 31. For example, the power supply unit 34 may be provided with a device 38 for wireless communication as shown in FIG. 3. In this case, the device 38 is arranged in a space surrounded by the metallic fixture body 2 and the support 31, which may prevent the emission of radio waves for wireless communication. To avoid this, a hole H may be opened in the bottom plate portion 31a near the position where the device for wireless communication is arranged on the support 31, as shown in FIGS. 5 and 9. This makes it easier for radio waves for wireless communication to be emitted outside the lighting fixture 1 via the non-metallic light source board 321.

(2) In the above embodiment, no description was given of the wiring between the member on the first surface S1 side of the support 31 and the member on the second surface S2 side. However, as shown in Fig. 7B, the wiring may be passed through a hole formed by a notch N1 (see Fig. 7A) provided in the end cap 333 and a notch N2 provided in the light source substrate 321. The notches N1 and N2 are semicircular notches, and are formed to form a circular hole when combined. Note that this circular hole may be configured to be larger than the diameter of the wiring, and as shown in Fig. 7B, the wiring 401 may be covered with a silicon tube 402, or a silicon caulking process may be performed without using the silicon tube 402, to close the gap between the wiring and the hole after the wiring is passed through the hole.

(3) In the above embodiment, the reflector portion 31d is painted white to enhance the reflecting function, but it is sufficient if it functions as a reflector. For example, instead of painting the reflector 31d white, a reflective member such as a reflective sheet may be attached. In this case, in order to prevent the reflective sheet from peeling off, the holding member 1050 shown in FIG. 12 may be used instead of the holding member 1010. The holding member 1050 is the holding member 1010 with the addition of a sheet holder 1050d that is continuous with the gripping claws 1010d. The sheet holder 1050d has the function of preventing the reflective sheet attached to the reflector portion 31d from peeling off when the holding member 1050 is attached to the support body 31.

(4) In the above embodiment, the light source 322 is mounted on the first surface S1 of the light source substrate 321. However, it is sufficient that the light source 322 is mounted. For example, the light source 322 may be mounted directly on the support 31 without using the light source substrate 321.

(5) The configuration of each part of the present invention is not limited to the above-described embodiment and modified examples, and various modifications are possible within the technical scope of the claims. For example, the configuration of each part of the above-described lighting fixture can be applied to various lighting fixtures that are not limited to LED lighting fixtures.

(6) The above-described embodiments and variations may be partially combined.

<5. Supplementary Information>
The configuration of a lighting fixture according to one embodiment of the present invention, as well as modifications and effects thereof, will be described below.

(1) A lighting fixture according to one embodiment of the present invention is a lighting fixture comprising an elongated light source unit and a fixture body to which the light source unit is attached, the fixture body having a storage recess for storing at least a portion of the light source unit, the light source unit comprising a light source board on which a plurality of light sources are mounted, a support body to which the light source board is attached, and a cover part attached to the support body so as to cover the light source board, and when the light source unit is attached to the fixture body, the cover part does not contact the opening edge of the storage recess, and the support body contacts the opening edge of the storage recess.

With this configuration, the lighting fixture of the present invention prevents the cover of the light source unit from being pressed against the edge of the opening, which prevents the cover from being deformed by pressure.

(2) In addition, in the support, the surface of the bottom plate portion to which the light source board is attached, opposite the surface to which the light source board is attached, may be closer to the bottom surface of the storage recess than the surface in contact with the opening edge.

This configuration separates the light source from the cover, reducing or eliminating the grainy feeling that occurs on the cover body when light is emitted from the light source and strikes the cover body.

(3) The support may also include a movement restriction portion erected on the housing recess side, inside a portion that contacts the opening edge on the surface opposite to the surface on which the light source board is attached.

This configuration allows the support body to restrict movement in the short direction by interfering with the side of the storage recess.

(4) The cover portion may also include an engaging portion formed with a crank-shaped cross section that protrudes inward, and the support body may have an opening on the side where the light source board is attached and a locking groove portion that engages with the engaging portion.

This configuration allows the support and cover to be firmly engaged.

(5) The cover portion may also include a light guide portion that covers a portion of the long side end of the support body.

This configuration allows you to reduce dark areas.

REFERENCE SIGNS LIST 1 Lighting fixture 2 Fixture body 3 Light source unit 5 Ceiling surface 6a Suspension bolt 8 Power cable 21 Housing 22 Storage recess 24, 25 Spring receiver 27 Power terminal block 31 Support 31a Bottom plate portion 31b Side wall portion 31c Board holder portion 31d Reflector portion 31e Locking groove portion 31f Movement restriction portion 31g Spring plate holder portion 32 Light source portion 33 Cover portion 34 Power supply portion 35, 36 Mounting spring portion 38 Device 211 Reflector portion 221 Bottom surface portion 222, 223 Long side surface portion 224, 225 Short side surface portion 228 Opening edge 241 Hook portion 242 Insertion hole 321 Light source board 322, 322a, 322b Light source 331 Cover body portion 331a Main portion 331b Engagement portion 331c Light guiding portion 332, 333 End cap 333a Screw receiving portion 333b Fixing portion 351 Mounting spring 351a Frame portion 351b Coil spring portion 351c Hook portion 352 Spring holding portion 352a Plate portion 352b Fixing portion 352c Hole portion 352d Arch portion 352e Projecting portion 401 Wiring 402 Silicon tube 1000 Support body 1010, 1050 Retaining member 1010a Plate portion 1010b Rib portions 1010c, 1010d Grip claws 1020 Reflecting sheet 1100, 1101 Rib 1120 Mounting target member B Screw D Groove GA Distance L1, L2 Light path H Hole H10 Opening N1, N2 Notch N10 Notch N1100, N1101 Thread cutting S1 First surface S2 Second surface

Claims (2)

A lighting fixture comprising an elongated light source unit and a fixture body to which the light source unit is attached,
The instrument body includes:
a housing recess for housing at least a part of the light source unit;
The opening edge surrounding the receiving recess is flat,
The light source unit includes:
a light source substrate on which a plurality of light sources are mounted;
A long plate-shaped support to which the light source substrate is attached;
a cover portion attached to the support member so as to cover the light source substrate;
The light source unit is detachably attached to the device body,
The lighting fixture, wherein, when the light source unit is attached to the fixture body, the cover portion does not contact the opening edge, and the support body abuts against the opening edge. The lighting fixture according to claim 1 , wherein a movement restricting portion is provided on the inside of a portion of the support body that contacts the opening edge.