JP2023168524A - Lighting apparatus - Google Patents

Abstract

To provide a lighting apparatus which allows an apparatus body and a light source unit to be separated from each other and which can suppress deformation of the light source unit.SOLUTION: A lighting apparatus 1 comprises a long-sized light source unit 3 and an apparatus body 2 to which the light source unit 3 is attached. The lighting apparatus 1 has an accommodation recess 22 for accommodating at least a portion of the light source unit 3, with an opening end edge 228 surrounding the accommodation recess 22 being flat. The light source unit 3 comprises: a light source substrate 321 with a plurality of light sources 332 mounted thereon; a support 31 to which the light source baseboard 321 is attached; and a cover part 33 attached to the support body 31 so as to cover the light source substrate 321. With the light source unit 3 being attached to the apparatus main body 2, the cover part 33 is not in contact with the opening end edge 228 and the support body 31 abuts on the opening end edge 228.SELECTED DRAWING: Figure 1

Description

The present invention relates to a lighting fixture, and particularly to a lighting fixture in which a fixture body and a light source unit are separated.

Some lighting fixtures placed on the ceiling include a light source unit and a fixture body having a recessed portion 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 on the spring receiver of the fixture body, the light source unit is drawn toward the lighting fixture by the elastic force of the mounting spring, and the light source unit is accommodated in the fixture body. .

JP2014-078422A

In the lighting fixture described above, when the light source unit is housed in the recess of the fixture main body, the opening edge of the recess and the end of the cover of the light source unit come into contact. Here, the opening edge is made of metal, and the cover of the light source unit is made of resin. Due to the elastic force mentioned above, the resin part of the light source unit is pressed against the metal opening edge, so pressure is applied to the resin part, which may cause it to gradually deform during long-term use. .

The present invention has been made in view of such problems, and an object of the present invention is to provide a lighting fixture that can suppress deformation of a light source unit.

In order to solve the above problems, a lighting fixture according to the present invention is a lighting fixture including an elongated light source unit and a fixture body to which the light source unit is attached, wherein the fixture body includes at least one of the light source units. The light source unit includes 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 light source unit attached to the support body so as to cover the light source board. when the light source unit is attached to the instrument main body, the cover portion does not contact the opening edge of the accommodation recess, and the support body contacts the opening edge of the accommodation recess. Contact.

With the above configuration, in the lighting fixture according to the present invention, the cover portion of the light source unit is not pressed against the edge of the opening, so that deformation due to pressure being applied to the cover portion can be suppressed.

A schematic cross-sectional diagram showing the configuration of a lighting fixture according to an embodiment of the present invention A perspective view showing the appearance of the lighting fixture in Figure 1 A diagram of the lighting fixture shown in Figure 2, with the fixture body and light source unit separated. Diagram showing the spring receiver included in the device body Diagram showing the configuration of the light source unit Side view of the cover section viewed from the short side (a) A perspective view showing an end cap that constitutes a light source unit, (b) A schematic diagram showing a state in which the end cap is attached to a support and a wire covered with a silicon tube is passed through a hole formed by a notch. (a) Diagram showing the mounting spring part that makes up the light source unit, (b) A perspective view showing the spring holding part making up the mounting spring part, (c) A side view of the spring holding part (a) A top view showing the support that constitutes the light source unit (the side where the light source is arranged), (b) A front sectional view of the support seen from the short direction (a) A perspective view showing the structure of the restraining member, (b) A schematic diagram showing a plan view of the support body to which the restraining member is attached, (c) A diagram schematically showing the AA cross section of (b) (a) A side view schematically showing a support body to which an attachment target is attached according to a modification of the present invention; (b) A schematic top view schematically showing a rib in which the screw tightening portion is pre-threaded. A perspective view showing the configuration of a holding member including a sheet holding down according to a modified example of the present invention.

<1. First embodiment>
<1.1. Overview＞
Hereinafter, a lighting fixture 1 according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the lighting fixture 1 includes a light source unit 3 attached to a fixture body 2. As shown in FIG. 2, the lighting fixture 1 has, for example, an elongated shape, is attached to a ceiling surface, which is an example of an attachment target, and irradiates light onto the indoor side.

As shown in FIG. 3, the instrument main body 2 has a box-like appearance with a housing recess 22 formed on one surface, and a casing 21 forming the appearance is formed by bending a sheet metal. The light source unit 3 is a long member that includes 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 cover part 33 made of resin, as shown in FIG. The light source unit 3 is attached such that at least a portion thereof is accommodated in the accommodation recess 22 in a direction in which light is emitted toward the outside of the lighting fixture 1. Regarding accommodation, the instrument main body 2 includes spring receivers 24 and 25 on the bottom surface 221 facing the opening surface of the accommodation recess 22. Further, the light source unit 3 includes attachment spring parts 35 and 36 on a surface facing the bottom surface part 221 in a state accommodated in the accommodation recess 22 .

When housing the light source unit 3 in the instrument body 2, the user first engages the mounting spring portion 35 with the spring receiver 24, and then engages the mounting spring portion 36 with the spring receiver 25. In this state, when the user brings the light source unit 3 closer to the bottom part 221 of the accommodation recess 22, the elastic force of the mounting spring parts 35 and 36 causes the light source unit 3 to move toward the back of the accommodation recess 22, that is, toward the bottom part 221. , and the light source unit 3 is fixed to the instrument main body 2 with a part of the light source unit 3 accommodated in the accommodation recess 22. At this time, the support body 31 of the light source unit comes into contact with the opening edge 228 of the instrument main body 2. The cover main body part 331, which is a resin part, does not come into contact with the instrument main body 2 and maintains a constant distance GA (see FIG. 1). Therefore, in the lighting fixture 1, the resin part of the light source unit is not pressed against the metal opening edge, and the problem of deformation of the light source unit 3 due to pressure applied to the resin part does not occur.

The lighting fixture 1 will be described in more detail below. In addition, each figure referred to in this specification is schematically represented by omitting or exaggerating a part of the structure in order to facilitate understanding of the present invention. Further, when explaining the structure of a member having a left-right symmetrical shape, if the same explanation is clearly repeated, there are cases where only one of the left and right is explained to avoid repetition.

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

The casing 21 is a box-shaped member in which a housing recess 22 is formed on one surface, and constitutes the appearance of the instrument main body 2. The cross-sectional shape of the casing 21 is, for example, a so-called reverse Fuji shape, which includes reflective plate portions 211 and 212 extending from the opening edge 228 of the housing recess 22. Note that the housing 21 may have a shape other than the reverse Fuji shape, such as a trough shape or an open bottom shape.

As shown in FIGS. 2 and 3, the housing recess 22 has long side surfaces 222 and 223 standing up from the long sides of an elongated bottom surface 221, and short side surfaces 224 and 223 extending from the short sides of the bottom surface 221, respectively. 225 stands up. The bottom portion 221 is provided with a plurality of holes along the longitudinal direction that are exposed from the ceiling surface 5 and through which electric wires such as the power cable 8 for supplying power to the lighting fixture 1 are passed. In addition, two holes for passing hanging bolts (for example, 6a and 7a) exposed from the ceiling surface 5 are provided in the bottom part 221 at positions near both ends in the longitudinal direction. As shown in FIG. 3, after the hanging bolts 6a and 7a are passed through these holes, nut members (for example, 6b and 7b) are tightened on the hanging bolts 6a and 7a, so that the appliance body 2 is attached to the ceiling surface. It is fixed at 5.

As described above, the spring receivers 24 and 25 are arranged on the bottom surface part 221, and the power terminal block 27 is also arranged. The spring receiver 24 is a spring bracket with 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. The hook portion 241 has a wide and flat hook shape. A frame portion 351a (see FIG. 8(a)) of the attachment spring 351 is hooked onto the hook portion 241 in a state in which the light source unit is locked, which will be described later. The insertion hole 242 is a substantially rectangular hole, into which the frame portion 351a of the attachment spring 351 is inserted when the light source unit is installed, which will be described later. The spring receiver 25 is a spring bracket that is engaged with the mounting spring portion 36, and has the same configuration as the spring receiver 24. The power terminal block 27 has a function of mutually connecting electric wires (such as the power cable 8) for connecting an external power source and the power supply section 34.

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

<Light source section 32>
As shown in FIGS. 1 and 5, in the light source section 32, surface-mounted LEDs, as an example of a plurality of light sources 322 (light sources 322a, light sources 322b, . . . ), are mounted on a long light source substrate 321 in the longitudinal direction. They are arranged in rows with spaces between them. Although the number of rows in which the light sources 322 are arranged is two as shown in FIG. 1, it may be one, or three or more rows. The light source section 32 is fixed to the support body 31 in a direction in which the light source 322 is exposed.

<Cover part 33>
The cover section 33 includes a cover body section 331, an end cap 332, and an end cap 333, as shown in FIG. The cover part 33 has a function of diffusing the light emitted by the light source 322.

<Cover body part 331>
The shape of the cover main body part 331 is symmetrical when viewed from the lateral direction. The cover main body part 331 is made of a diffusive material (for example, milky white acrylic resin or polycarbonate resin), and is arranged to cover the light source 322 of the light source part 32. As shown in FIG. 6, the cover main body portion 331 is an elongated member having an arch shape with a convex short side cross section, and is formed by extrusion molding.

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

The light guiding portion 331c is a portion that is continuous with the main portion 331a and extends from the base end portion of the engaging portion 331b. The light guide portion 331c is formed so as to cover a part of the long side end surface of the support body 31 when the cover portion 33 is placed on the support body 31. Thereby, the area of the support body 31 exposed to the outside can be reduced. Further, the light guide section 331c has a function of guiding light emitted from the light source. Therefore, the part where the light emitted from the light source is blocked by the support body 31 can be brightened, and the brightness does not suddenly darken in the surrounding area, making it possible to provide a good-looking lighting fixture.

In addition, the length of the light guide portion 331c is determined so that when the light source unit 3 is attached to the device body 2, the light guide portion 331c does not come into contact with the device body 2 and maintains a constant distance GA (see FIG. 1). stipulated. Therefore, the resin part of the light source unit is not pressed against the metal opening edge, so the problem of deformation of the light source unit 3 due to pressure applied to the resin part does not occur.

Furthermore, since the cover portion 33 is made of a resin material as described above, it may expand or contract to some extent due to the heat generated by the light source when it is turned on, and return to its original state when the light source is turned off. The above-mentioned interval GA is defined so that even if the cover part 33 stretches, it will not come into contact with the instrument main body 2. Therefore, there is no problem that the light guide section 331c comes into contact with the instrument main body 2 due to elongation of the cover section 33, causing creak.

<End caps 332, 333>
As shown in FIG. 5, the end cap 332 is a member located at the shorter end of the cover main body 331, and is not fixed to the cover main body 331 but to the support body 31.

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

Furthermore, the end cap 332 is provided with a notch N1. The cutout N1 is used to insert the wiring (see FIG. 7(b)) necessary for connection between the light source and the power supply section 34.

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

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

<Mounting spring parts 35, 36>
The attachment spring portion 35 is a member that is attached to the upper surface of the support body 31 and engages with the spring receiver 24 that the instrument main body 2 has. The light source unit 3 is attached to the instrument main body 2 by the attachment spring portion 35 engaging with the spring receiver 24 . The attachment spring section 35 includes an attachment spring 351 and a spring holding section 352, as shown in FIG. 8(a).

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

The spring holding portion 352 is a member that holds the attachment spring 351 and is fixed to the support body 31. The spring holding portion 352 is formed by bending a metal plate. The spring holding part 352 includes a plate part 352a, a fixing part 352b, a hole part 352c, an arch part 352d, and a protruding part 352e, as shown in FIGS. 8(b) and 8(c). The plate portion 352a is a plate-shaped portion, and is fixed to a surface of the support body 31 that faces the surface on which the light source substrate 321 is attached. The fixing part 352b is a flat plate-shaped part on which the coil spring part 351b of the attachment spring 351 is hooked. The hole 352c is a hole provided in the plate 352a, and a screw or the like for fixing the plate 352a and the support body 31 is inserted therethrough. The arch portion 352d is a portion processed into an arch shape, and the hook portion 351c of the attachment spring 351 is inserted and hooked into the arch. The protruding 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 attachment spring portion 36 is a member that engages with the spring receiver 25 that the instrument main body 2 has. The configuration of the attachment spring section 36 is similar to that of the attachment spring section 35.

<Support 31>
The support body 31 is a long plate-shaped member as shown in FIG. 5 and FIG. 9(a) which is a top view. The support body 31 is formed by extrusion molding from a metal material such as an aluminum alloy, and functions as a heat sink for dissipating heat generated by the light source section 32. The shape of the support body 31 is laterally symmetrical when viewed from the lateral direction. In the following description, regarding the support body 31 and the parts that constitute the support body 31, as shown in FIG. It is called S1, and the surface opposite to the first surface S1 is called a second surface S2. When the light source unit 3 is attached to the instrument main body 2, the second surface S2 faces the accommodation recess 22 side.

As shown in FIG. 9(b), the support body 31 includes a bottom plate part 31a, a side wall part 31b, a board holding part 31c, a reflecting plate part 31d, a locking groove part 31e, a movement regulating part 31f, and a spring plate holding part 31g. .

The bottom plate portion 31a is a flat, elongated plate-shaped portion at the center of the support body 31 in the width direction. The light source section 32 is arranged on the first surface S1 of the bottom plate section 31a, and the attachment spring section 35, the attachment spring section 36, and the power supply section 34 are arranged on the second surface S2. The length of the bottom plate portion 31a in the lateral direction is slightly longer than the length of the light source substrate 321 in the lateral direction.

In the following description of the configuration shown in FIG. 9(b), for convenience, the first surface S1 is facing down, and the second surface S2 is facing down, as shown in FIG. 9(b). The side facing upward is called top, the long side when viewed from the central axis of the bottom plate portion 31a is called outside, and the side facing the central axis when viewed from the long side is called inside.

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

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

The reflecting plate portion 31d is a plate-shaped 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 reflection plate portion 31d has a function of reflecting light emitted from the light source 322. The first surface S1 of the reflection plate portion 31d is painted white, for example. Further, the reflection plate portion 31d is inclined downward toward the outside. By inclining the reflector part 31d in this manner, the bottom plate part 31a is positioned above the outer end E of the reflector part 31d, and the bottom plate part 31a is separated from the cover part 33. When the light source unit 3 is attached to the instrument body 2, the surface (second surface S2) of the bottom plate portion 31a facing the bottom surface portion 221 of the housing recess 22 comes into contact with the opening edge 228 of the housing recess 22. It is closer to the bottom surface portion 221 than the other surface. By doing so, it is possible to reduce or eliminate the squishy feeling that occurs in the cover main body 331 due to the light emitted by the individual light sources 322 and hitting the cover main body 331.

The locking groove portion 31e is continuous with the outer end of the reflection plate portion 31d, and is provided with a groove D that is open on the side to which the light source board 321 is attached, as an example of a groove that engages with the engagement portion 331b of the cover portion 33. This is the part. The locking groove portion 31e prevents the cover body portion 331 from coming off the support body 31 by engaging with the engagement portion 331b of the cover body portion 331. A surface CS of the locking groove portion 31e on the same side as the second surface S2 of the bottom plate portion 31a contacts the opening edge 228.

The movement restricting portion 31f is erected from inside the portion of the support 31 that contacts the opening edge 228 on the side opposite to the surface to which the light source board 321 is attached, and the support 31 is attached to the instrument main body 2. In this case, the light source unit 3 has a function of regulating the position so that it does not shift in the transverse direction with respect to the instrument main body 2 by more than a predetermined length. In other words, the movement restricting portion 31f is located within the housing recess 22 when the light source unit 3 is attached to the instrument main body 2, as shown in FIG. When the light source unit 3 is about to shift by a predetermined length or more in the direction along the short side with respect to the instrument main body 2, the movement restricting portion 31f will interfere with the long side side portions 222, 223 of the accommodation recess 22.

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

<1.4. Assembling light source unit 3>
(1) Attaching the light source section 32 to the support body 31 When attaching the light source section 32 to the support body 31 with reference to FIG. The light source section 32 is slid in the longitudinal direction of the support body 31 so as to be located within a region surrounded by the bottom plate part 31a, side wall part 31b, and substrate holding part 31c of the support body 31 shown in FIG. 9(b).

(2) Attaching the cover part 33 to the support body 31 When attaching the cover part 33 to the support body 31 with reference to FIG. 5, the engagement of the cover part 33 shown in FIG. The cover main body 331 is slid in the longitudinal direction of the support 31 so that the portion 331b is engaged with the groove D provided in the locking groove 31e of the support 31 shown in FIG. 9(b). With this configuration, there is no need to use separate screws or the like to fix the support body 31 and the cover part 33, and the labor required by the operator when fixing them is reduced.

(3) Attaching the attachment spring portion 35 and the attachment spring portion 36 to the support body 31 When attaching the attachment spring portion 35 to the support body 31, from the short side side of the support body 31, the attachment spring portion shown in FIG. 8(c) is attached. 35 in the longitudinal direction of the support body 31 so that the end part and the protrusion part 352e of the plate part 352a of the support body 35 are located between the reflection plate part 31d and the spring plate restraining part 31g of the support body 31 shown in FIG. 9(b). Slide it. After the mounting spring part 35 is slid until it is at a predetermined position with respect to the support body 31, a screw is inserted into the hole 352c of the spring holding part 352 and screwed to the support body 31.

Since the protruding portion 352e is fitted between the reflecting plate portion 31d and the spring plate restraining portion 31g, even if the screw inserted into the hole portion 352c comes off, the mounting spring portion 35 will not separate from the support body 31. You can prevent it from falling off.

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

(4) Attachment of end cap 332 and end cap 333 to support body 31 Referring to FIG. 5, end cap 332 is attached to support body 31 after cover portion 33 is attached to support body 31. 7(a) and (b), when attaching the end cap 332 to the support body 31, the end cap 332 is attached from the short side of the support body 31 so that the fixed part 333b of the end cap 332 is attached to the reflection plate part 31d. The support body 31 is slid in the longitudinal direction so as to be in contact with the second surface S2 of the support body 31. At this time, the vicinity of the end of the short side of the support body 31 is positioned between the screw receiving part 333a and the fixing part 333b.

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

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

<1.5. Installation of the fixture body 2 on the ceiling, installation of the light source unit 3 to the fixture body 2>
Install the lighting fixture 1 on the ceiling using the following steps. Note that it may be installed on a bar fitting such as a raceway instead of on the ceiling.

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

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

(3) Hook the spring 351 of the mounting spring part 35 on the light source unit 3 side to the hook part 241 (see FIG. 4) of the spring receiver 24 on the instrument main body 2 side. This state is referred to as a "light source unit locked state." The mounting spring portion 36 is also hung on the spring receiver 25 in the same manner.

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

(5) Push up the light source unit 3. Then, the spring 351 enters the insertion hole 242 of the spring receiver 24. The light source unit 3 is pulled up by the force of the spring, and the support portion 31 of the light source unit 3 is pressed against and comes into contact with the opening edge 228 of the instrument body 2. This state is referred to as the "light source unit installation state", and a cross-sectional view thereof is shown in FIG. By pulling the rigid metal support up and fixing it to the metal fixture body in this way, it is difficult to create a gap between the two, and even when looking up from the side, which is the outside of the lighting fixture, it is clean. A great look can be achieved.

<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 source 322 is arranged, but this may be attached. In this embodiment, a restraining member 1010 is further provided to prevent the reflective sheet from falling even if it is peeled off. The present embodiment will be described below, focusing on the configuration of the restraining member 1010 (see FIG. 10).

As shown in FIGS. 10(b) to 10(c), the light source section 32 is placed on the first surface S1 of the bottom plate section 31a of the support body 31, and light is reflected on the surface of the light source section 32 on the light source 322 side. A white reflective sheet 1020 with a high rate of, for example, 90% or more is attached, and a restraining member 1010 is attached to the exposed surface of the reflective sheet 1020. As shown in FIG. 10(b), the reflective sheet 1020 is provided with an opening H10 corresponding to the position of the light source 322, so 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 restraining plate portion 1010a is a flat plate-shaped portion and has a function of restraining the reflective sheet. The rib portion 1010b is a plate-shaped rib that stands upright from the center of the short side of the restraining plate portion 1010a, and prevents deflection in the longitudinal direction of the restraining plate portion 1010a, and has a thickness similar to that of the restraining plate portion 1010a to reduce weight. It is thinner than the length of the short side. When the holding member 1010 is attached to the support body 31, the gripping claw 1010c is sandwiched between the board holding part 31c and the bottom plate part 31a. This restricts the movement of the restraining member 1010 so that it does not shift in the vertical direction.

In the light source board 321, a notch N10 matching the shape of the gripping claw 1010c is provided in the vicinity of the portion where the gripping claw 1010c is arranged, as shown in FIG. 10(b). Since the gripping claw 1010c is located in the notch N10, movement of the gripping claw 1010c and the restraining member 1010 in the longitudinal direction of the support body 31 is restricted. Note that even if the light source substrate 321 does not have the cutout N10 portion, the holding member 1010 can be used by, for example, making the gripping claw 1010c thinner.

When the holding member 1010 is attached to the support body 31, the holding claw 1010d holds the substrate holding portion 31c between the holding claw 1010c and the holding claw 1010c. This restricts the movement of the restraining member 1010.

<3. Third embodiment>
Since the support body 31 in the first embodiment is an elongated member, there is a possibility that the support body 31 is bent particularly in the longitudinal direction, and it is more desirable to reinforce the support body 31 so that it does not bend. For this reason, the support 1000 according to the present embodiment is provided with ribs 1100 and ribs 1101 on the second surface S2 of the reflective plate portion 31d of the support 31, as shown in FIG. 11(a).

The ribs 1100 and 1101 stand upright in the longitudinal direction from one short side of the support 1000 to the other short side. Thereby, the support body 1000 is in a reinforced state so that it is difficult to bend in the longitudinal direction.

Further, in the first embodiment, when a member to be attached, such as the attachment spring section 35, is screwed to the support body 31, it is screwed to the reflection plate section 31d of the support body 31. Since the reflection plate part 31d is inclined with respect to the bottom plate part 31a, in order to screw it perpendicularly to the reflection plate part 31d, the screw must be screwed in an oblique direction with the bottom plate part 31a as a reference, and force is not applied to the screw. It is difficult to add and may reduce work efficiency.

However, a 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. An attachment target member 1120 such as the attachment spring section 35 is arranged across the bottom plate section 31a, the ribs 1100, and the ribs 1101. The screwing position in the attachment target member 1120 is a position corresponding to between the ribs 1100 and the ribs 1101, and a hole is pre-drilled at this position. Moreover, a screw hole is formed in advance by threading (threading N1100 and N1101 in FIG. 11(b)) between the ribs 1100 and the ribs 1101 at a position where the screw B is to be tightened. The screw B is inserted into this screw hole, and the screw B is tightened into the screw holes of the rib 1100 and the rib 1101, so that the attachment target member 1120 and the support body 1100 are tightly fixed.

Since the screw-fastening position part of the attachment target member 1120 is parallel to the bottom plate part 31a, the worker who screws can fix the screws in a vertical direction with the bottom plate part 31a as a reference, and the bottom plate part Compared to the case where the screws are screwed diagonally to 31a, it is easier to apply force to the screws, improving work efficiency.

Note that, as described above, the member to be attached to the support body 31 can be screwed by screwing a tapping screw between the ribs 1100 and the ribs 1101 without threading the ribs 1100 and the ribs 1101 in advance. You can also use it as

<4. Other variations＞
Although the embodiments of the lighting fixtures according to the present invention have been described above, the illustrated lighting fixtures can be modified as follows, and the present invention is not limited to the lighting fixtures as shown in the above embodiments. Of course, it cannot be done.

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

(2) In the above embodiment, the wiring between the member on the first surface S1 side and the member on the second surface S2 side of the support body 31 was not explained. As shown, the wiring may be passed through a hole formed by a notch N1 provided in the end cap 333 (see FIG. 7A) and a notch N2 provided in the light source board 321. The notch N1 and the notch N2 are each semicircular notches, and when combined, they form a circular hole.The circular hole is configured to be larger than the diameter of the wiring. As shown in FIG. 7(b), the gap between the wiring and the hole after the wiring is passed through the hole by covering the wiring 401 with a silicone tube 402 or by caulking with silicon without using the silicone tube 402. You can also fill it with.

(3) In the above embodiment, the reflective function is enhanced by painting the reflective plate part 31d white, but it is sufficient that it functions as a reflective plate. For example, instead of painting the reflective plate 31d white, a reflective sheet can be used. You may also attach a reflective material such as At this time, in order to prevent the reflective sheet from peeling off, a restraining member 1050 shown in FIG. 12 may be used instead of the restraining member 1010. The holding member 1050 is the same as the holding member 1010 in which a sheet holding member 1050d that is continuous with the gripping claws 1010d is added. The sheet restrainer 1050d has a function of preventing the reflective sheet attached to the reflective plate portion 31d from peeling off when the restraining 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 board 321, but it is sufficient if the light source 322 is mounted, for example, the light source 322 is mounted on the first surface S1 of the light source board 321. 322 may be mounted directly on the support 31.

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

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

<5. Supplement>
Hereinafter, the configuration of a lighting fixture as an embodiment of the present invention, modifications thereof, and effects will be further described.

(1) A lighting fixture according to an embodiment of the present invention is a lighting fixture including an elongated light source unit and a fixture body to which the light source unit is attached, wherein the fixture body includes at least one of the light source units. The light source unit includes 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 light source unit attached to the support body so as to cover the light source board. when the light source unit is attached to the instrument main body, the cover portion does not contact the opening edge of the accommodation recess, and the support body contacts the opening edge of the accommodation recess. Contact.

With this configuration, in the lighting fixture according to the present invention, the cover portion of the light source unit is not pressed against the opening edge, so that deformation due to pressure being applied to the cover portion can be suppressed.

(2) In addition, in the support, a surface of the bottom plate portion to which the light source substrate is attached, opposite to a surface to which the light source substrate is attached, is closer to the accommodation recess than a surface that is in contact with the opening edge. It may be close to the bottom.

With this configuration, it is possible to separate the light source from the cover part and reduce or eliminate the squishy feeling that occurs in the cover body due to the light emitted by the light source and hitting the cover body.

(3) Furthermore, the support may include a movement restriction portion erected on the side of the accommodation recess on the inner side of a portion that contacts the opening edge on a surface opposite to the surface to which the light source board is attached. good.

With this configuration, movement of the support in the lateral direction can be restricted by interfering with the side surface of the accommodation recess.

(4) Further, the cover part includes an engaging part formed in a crank shape in cross section and protrudes inward, and the support body has an opening on a surface side to which the light source board is attached and engages with the engaging part. It is also possible to provide a matching locking groove.

With this configuration, the support body and the cover part can be firmly engaged.

(5) Furthermore, the cover section may include a light guide section that covers a part of the long side end of the support body.

With this configuration, dark areas can be reduced.

1 Lighting fixture 2 Apparatus main body 3 Light source unit 5 Ceiling surface 6a Hanging bolt 8 Power cable 21 Housing 22 Accommodation recess 24, 25 Spring receiver 27 Power terminal block 31 Support body 31a Bottom plate part 31b Side wall part 31c Board holding part 31d Reflection plate part 31e Locking groove part 31f Movement regulating part 31g Spring plate restraining part 32 Light source part 33 Cover part 34 Power supply part 35, 36 Mounting spring part 38 Device 211 Reflector part 221 Bottom part 222, 223 Long side side part 224, 225 Short side side Part 228 Opening edge 241 Hook part 242 Insertion hole 321 Light source board 322, 322a, 322b Light source 331 Cover body part 331a Main part 331b Engagement part 331c Light guiding part 332, 333 End cap 333a Screw receiving part 333b Fixing part 351 Mounting spring 351a Frame portion 351b Coil spring portion 351c Hanging portion 352 Spring holding portion 352a Plate portion 352b Fixing portion 352c Hole portion 352d Arch portion 352e Projection portion 401 Wiring 402 Silicon tube 1000 Support bodies 1010, 1050 Holding member 1010a Plate portion 1010b Rib portion 1010c, 1010d Grip claw 1020 Reflective sheet 1100, 1101 Rib 1120 Mounting target member B Screw D Groove GA Spacing L1, L2 Optical path H Hole H10 Opening N1, N2 Notch N10 Notch N1100, N1101 Thread cutting S1 First surface S2 Second surface 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 main body is
having a housing recess that houses at least a portion of the light source unit;
an opening edge surrounding the accommodation recess is flat;
The light source unit is
A light source board on which multiple light sources are mounted,
a support to which the light source board is attached;
a cover portion attached to the support body so as to cover the light source substrate;
The lighting fixture, wherein when the light source unit is attached to the fixture main body, the cover part does not contact the opening edge, and the support body comes into contact with the opening edge. The lighting fixture according to claim 1, wherein a movement restricting portion is erected inside a portion of the support that contacts the opening edge.