JP6715478B2 - LED unit and luminaire including the same - Google Patents

Description

The present invention relates to an LED unit and a lighting fixture including the same, and more particularly to an LED unit including a light guide plate and a lighting fixture including the same.

2. Description of the Related Art Conventionally, a luminaire including an LED unit that planarly emits light of an LED (light emitting diode) incident from one end surface of a light guide plate has been used.

As a configuration of this type of lighting fixture, a configuration including a plurality of LEDs, a substrate on which the plurality of LEDs are arranged at equal intervals, a light guide plate, a holding member, and a spacer is known (for example, , Patent Document 1).

In the configuration of Patent Document 1, the substrate is held by the holding member. The substrate is arranged at a position facing the incident portion, which is one end surface of the light guide plate. The light guide plate guides the light emitted from the LED and outputs the light to the outside. The spacer maintains a constant distance between the one end surface of the light guide plate and the LED. The lighting fixture irradiates the light of the LED, which is incident from one end surface of the light guide plate, from both side surfaces of the light guide plate.

In Patent Document 1, since the spacer keeps the distance between the one end face of the light guide plate and the LED constant, it is possible to prevent the LED from being damaged by eliminating the pressure applied to the LED.

JP, 2015-32395, A

By the way, the LED unit is required to have a configuration capable of further improving the assembling workability, and the configuration of Patent Document 1 described above is not sufficient, and further improvement is required.

An object of the present invention is to provide an LED unit capable of improving the assembly workability and a lighting fixture including the same.

An LED unit according to one aspect of the present invention includes a plurality of LEDs, a mounting substrate, a light guide plate, a mounting plate, and a fixing member. The mounting board has a long outer shape. The mounting board, along a longitudinal direction, said plurality of LED is mounted on the mounting surface. The light guide plate is emitted to the outside guiding light of the plurality the LED. Said mounting plate, said plurality of LED light to be incident to one end face of the light guide plate, the mounting substrate is disposed. The fixing member fixes the mounting substrate to the mounting plate. The fixing member includes a fixing body fixed to the mounting plate with a fixing screw, a long spacer protruding from the fixing body, and a mounting body protruding from the fixing body along a thickness direction of the mounting board. It has a side edge and a protruding piece that abuts . The spacer, so that the longitudinal direction along the lateral direction of the mounting substrate, is disposed. The spacer, the plurality of LED, is provided between two adjacent the LED. The spacer is provided between the end surface and the mounting surface. The spacer in the thickness direction of the mounting substrate, set to higher than the height of the height from the mounting surface of the plurality the LED. The protruding piece restricts the spacer from rotating in a direction intersecting with the side edge on the mounting surface as the fixing screw rotates.

A lighting fixture according to one aspect of the present invention includes the above-described LED unit and a fixture main body. The LED unit is attached to the instrument body.

INDUSTRIAL APPLICABILITY The LED unit of the present invention and the lighting fixture provided with the same can improve the assembly workability.

FIG. 1 is a partially broken exploded perspective view showing a main part of a lighting fixture according to an embodiment of the present invention. FIG. 2 is a partially cutaway cross-sectional view showing another main part of the above lighting fixture. FIG. 3 is a partially cutaway front view showing another main part of the above lighting fixture. FIG. 4 is an exploded perspective view showing the lighting fixture of the above. FIG. 5A is a front view showing the same lighting fixture, FIG. 5B is a left side view showing the same lighting fixture, and FIG. 5C is a rear view showing the same lighting fixture. FIG. 6 is a cross-sectional view showing the lighting fixture of the above. FIG. 7: is a perspective view which shows the lighting fixture same as the above. FIG. 8 is a partially cutaway side sectional view showing a main part of a lighting fixture of Modification 1 of the above. FIG. 9 is a partially cutaway front view showing a main part of a lighting fixture of Modification 2 of the above. FIG. 10 is a partially cutaway front view showing a main part of a lighting fixture of Modification 3 of the above. FIG. 11: is a partially broken perspective view which shows another main part of the lighting fixture of the modification 3 same as the above. FIG. 12: is a perspective view which shows the other principal part of the lighting fixture of the modification 3 same as the above.

Below, the LED unit 3 of this embodiment and the lighting fixture 1X provided with the same are demonstrated based on FIG. 1 thru|or FIG. In the drawings, the same members are designated by the same reference numerals, and overlapping description will be omitted. The sizes and positional relationships of members shown in the drawings may be exaggerated for clarity of explanation. In the following description, each element constituting the present embodiment may be a mode in which a plurality of elements are configured by one member and one member also serves as a plurality of elements. You may implement|achieve by sharing with members.

As shown in FIG. 1, the LED unit 3 of the present embodiment includes a plurality of LEDs 300, a mounting substrate 301, a light guide plate 5, a mounting plate 310, and a fixing member 7. In FIG. 1, three fixing members 7 are shown. The mounting substrate 301 has a long outer shape. A plurality of LEDs 300 are mounted on the mounting surface 301a of the mounting substrate 301 along the longitudinal direction. The light guide plate 5 guides the light of the plurality of LEDs 300 and outputs the light to the outside. The mounting board 301 is disposed on the mounting plate 310 so that the light from the LEDs 300 is incident on the one end surface 5 a of the light guide plate 5. The fixing member 7 fixes the mounting substrate 301 to the mounting plate 310. As shown in FIGS. 2 and 3, the fixing member 7 has a spacer 7b. The fixing member 7 shown in FIG. 2 is illustrated in the XX section of FIG. The spacer 7b has a long outer shape. The spacer 7b is arranged so that the longitudinal direction thereof is along the lateral direction of the mounting substrate 301. The spacer 7b is provided between two adjacent LEDs 300 among the plurality of LEDs 300. The spacer 7b is provided between the one end surface 5a and the mounting surface 301a. The height of the spacer 7b from the mounting surface 301a is higher than the height of the plurality of LEDs 300 in the thickness direction of the mounting substrate 301.

In the LED unit 3 of the present embodiment, the fixing member 7 has a long spacer 7b, and the spacer 7b is provided between two adjacent LEDs 300 and between the one end surface 5a and the mounting surface 301a. Since the height of the LED is higher than that of the LED 300, the assembling workability can be improved.

Below, the lighting fixture 1X which concerns on this embodiment is demonstrated in detail. As shown in FIG. 4, the lighting fixture 1X includes a fixture main body 2 and four LED units 3. The lighting fixture 1X further includes a reflecting member 4 and a power supply unit 6.

As shown in FIG. 4, the instrument main body 2 has a bottomed rectangular tubular outer shape. The instrument body 2 has a bottom plate 20, four side plates 21, and two reinforcing plates 22. The instrument main body 2 includes a first terminal block 10, a second terminal block 11, and two hooking springs 12.

The bottom plate 20 has a rectangular flat plate-like outer shape. The bottom plate 20 is formed of a metal plate. Examples of the material of the metal plate include a steel plate. The bottom plate 20 has four mounting holes 23, as shown in FIG. 5C. The four mounting holes 23 are, in the rear view of the bottom plate 20, of the two pairs of sides facing each other in a rectangular shape, in the central portion of one pair of sides facing each other, in the longitudinal direction of the other pair of sides facing each other. It is installed along. Each of the mounting holes 23 penetrates in the thickness direction of the bottom plate 20. Each of the mounting holes 23 has a circular outer shape when the bottom plate 20 is viewed from the rear.

The bottom plate 20 further has two wire insertion holes 24 and a hook hole 25, as shown in FIGS. 4 and 5C. The two wire insertion holes 24 and the hook holes 25 are provided along the direction intersecting the direction in which the four mounting holes 23 are arranged in the rear view of the bottom plate 20.

Each of the wire insertion holes 24 penetrates in the thickness direction of the bottom plate 20. Each electric wire insertion hole 24 has a circular outer shape when the bottom plate 20 is viewed from the rear. Of the two electric wire insertion holes 24, one electric wire insertion hole 24 is arranged in the central portion of the bottom plate 20. The other electric wire insertion hole 24 of the two electric wire insertion holes 24 is arranged on the end side of the bottom plate 20 as compared with the one electric wire insertion hole 24. The grommet 24a is fitted into each of the wire insertion holes 24. The electric wire is inserted into one of the electric wire insertion holes 24. The power line is an electric wire for power supply to which electric power is supplied from the electric power system. A signal line is inserted into the other wire insertion hole 24. The signal line is an electric wire through which a dimming signal is transmitted. The hook hole 25 penetrates in the thickness direction of the bottom plate 20. The hook hole 25 has a rectangular outer shape when the bottom plate 20 is viewed from the rear.

Each of the four side plates 21 has a main portion 210, a connecting portion 211, and an outer flange portion 212. The main part 210 is formed to be long. The main part 210 has a rectangular plate-like outer shape. The main portion 210 is provided with a connecting portion 211 at one end in the lateral direction along the longitudinal direction. The connecting portion 211 has a long outer shape. As shown in FIG. 2, one end portion of the connecting portion 211 in the lateral direction of the connecting portion 211 has an L-shaped outer shape when viewed from the longitudinal direction of the connecting portion 211. One end portion of the connecting portion 211 is connected to one end of the main portion 210 in the lateral direction along the longitudinal direction. The connecting portion 211 has the other end opposite to the one end portion connected to the bottom plate 20 along the longitudinal direction.

The outer collar portion 212 has a long outer shape. The outer collar portion 212 projects outward along the thickness direction of the main portion 210 from the other end opposite to the one end of the main portion 210. In other words, the outer brim portion 212 projects in a direction away from the bottom plate 20. As shown in FIG. 2, the outer brim portion 212 has an L-shaped outer shape, and a tip portion thereof faces the main portion 210.

The side plate 21 has a main portion 210, a connecting portion 211, and an outer flange portion 212 that are integrally formed. The side plate 21 is formed by punching and bending a metal plate. Examples of the metal plate of the side plate 21 include a steel plate. The side plate 21 is coated with white paint. The side plate 21 is coated with white paint on its surface, so that the reflectance of the light of the LED 300 can be increased. The bottom plate 20 and the side plate 21 may be integrally formed, or the bottom plate 20 and the side plate 21 may be separately formed. When the bottom plate 20 and the side plate 21 are formed separately, the bottom plate 20 and the side plate 21 are joined together in an appropriate direction such as welding.

Each of the two reinforcing plates 22 has a long external shape, as shown in FIGS. 4 and 6. Each of the reinforcing plates 22 has a C-shaped outer shape in a sectional view orthogonal to the longitudinal direction. Each reinforcing plate 22 has a plurality of elongated holes 220. Each long hole 220 penetrates in the thickness direction of the reinforcing plate 22. Each long hole portion 220 is provided so that its longitudinal direction is along the lateral direction of the reinforcing plate 22. The two reinforcing plates 22 are arranged so that their longitudinal directions are parallel to each other and are adjacent to each other with a predetermined gap. Each of the two reinforcing plates 22 is screwed to the bottom plate 20 with screws. When the reinforcing plate 22 is screwed to the bottom plate 20, as shown in FIG. 5C, the reinforcing plate 22 is arranged so that the elongated hole portion 220 overlaps with the mounting hole 23 of the bottom plate 20. Each of the reinforcing plates 22 is formed of a metal plate. Examples of the metal plate of the reinforcing plate 22 include a steel plate.

The first terminal block 10 is attached to the bottom plate 20 as shown in FIG. 4. The first terminal block 10 is arranged at the center of the bottom plate 20. The first terminal block 10 is electrically connected to the power line. The second terminal block 11 is attached to the bottom plate 20. The second terminal block 11 is arranged on the bottom plate 20 so as to be sandwiched between the two wire insertion holes 24. The second terminal block 11 is electrically connected to the signal line.

As shown in FIGS. 4 and 6, the two hooking springs 12 are attached to both end portions along one side of the rectangular bottom plate 20. Each hooking spring 12 is formed of a strip-shaped plate material. The strip-shaped plate material has a spring property.

Each of the four LED units 3 has the same configuration. The configuration of one LED unit 3 will be described below with reference to FIGS. 1 to 3. As shown in FIG. 1, the LED unit 3 includes a light guide plate 5, an LED module 30, a plurality of pins 36, and a pair of holding members 39. The pair of holding members 39 have different shapes. In the following, one of the pair of holding members 39 will be referred to as the first holding member 31, and the other holding member 39 of the pair of holding members 39 opposite the one will also be referred to as the second holding member 32. .. The LED unit 3 has a first reflection sheet 33, a second reflection sheet 34, and an elastic sheet 35. As shown in FIGS. 2 and 3, the LED unit 3 further includes a coupling screw 37, a spacer member 38a, and a fixing screw 38b.

The LED module 30 has a plurality of LEDs 300, a mounting substrate 301, and a pair of connectors 302. As shown in FIG. 3, the LED 300 includes an LED chip 300a, a package 300b, and a sealing portion 300c. The package 300b includes a recess that houses the LED chip 300a. The sealing portion 300c is filled in the recess so as to cover the LED chip 300a. The sealing portion 300c has a light-transmitting property. Examples of the material of the sealing portion 300c include silicone resin, epoxy resin, and glass. The sealing part 300c contains a phosphor. The phosphor is excited by the light emitted from the LED chip 300a and emits fluorescence. The LED 300 can emit white light, for example, by a mixture of blue light emitted from the LED chip 300a and yellow light emitted from a phosphor. The LED 300 can emit not only white light but also light of a light bulb color, for example, by changing the type of the LED chip 300a or the phosphor.

The mounting board 301 is formed to be long. The mounting substrate 301 has a rectangular plate-like outer shape. The mounting substrate 301 has wiring. The wiring electrically connects the plurality of LEDs 300. The wiring is formed of copper foil, for example. The mounting board 301 has a plurality of first screw insertion holes 303. Each of the plurality of first screw insertion holes 303 penetrates in the thickness direction of the mounting substrate 301. The plurality of first screw insertion holes 303 are provided in the central portion of the mounting substrate 301 and both end portions of the mounting substrate 301 along the longitudinal direction of the mounting substrate 301. Each first screw insertion hole 303 is provided on the first end side of the mounting substrate 301 in the lateral direction.

On the mounting board 301, a plurality of LEDs 300 are linearly mounted at predetermined intervals along the longitudinal direction. The plurality of LEDs 300 are arranged on the second end side opposite to the first end of the mounting board 301 in the lateral direction of the mounting board 301. The pair of connectors 302 are mounted on both ends of the mounting substrate 301 in the longitudinal direction. The pair of connectors 302 is provided on the first end side in the lateral direction of the mounting substrate 301. The pair of connectors 302 are electrically connected to the wiring of the mounting board 301. The pair of connectors 302 is configured to be able to supply power to the plurality of LEDs 300 via the wiring of the mounting substrate 301.

As shown in FIGS. 1 and 2, the first holding member 31 includes a mounting plate 310, a first coupling piece 311, a first support piece 312, and a connecting piece 313. The mounting plate 310 is formed in a long shape. The mounting plate 310 has a rectangular flat plate-like outer shape. The mounting plate 310 has three first screw holes 316. The first screw holes 316 are provided in the central portion of the mounting plate 310 and both ends of the mounting plate 310 in the longitudinal direction of the mounting plate 310. Each first screw hole 316 penetrates in the thickness direction of the mounting plate 310. On the mounting plate 310, a fixing screw 38b which is inserted through the first screw insertion hole 303 of the mounting board 301 is screwed to the first screw hole 316. The mounting plate 310 has three bolt insertion holes. The three bolt insertion holes are provided in the central portion of the mounting plate 310 and both ends of the mounting plate 310 in the longitudinal direction of the mounting plate 310. The bolt insertion hole penetrates in the thickness direction of the mounting plate 310.

The first coupling piece 311 is formed long. The first coupling piece 311 has a rectangular flat plate outer shape. The first coupling piece 311 has three female screw portions 314. The female screw portion 314 is provided in the central portion of the first coupling piece 311 and both ends of the first coupling piece 311 along the longitudinal direction of the first coupling piece 311. The first coupling piece 311 is provided at the first end of the mounting plate 310 in the lateral direction along the longitudinal direction of the mounting plate 310. The first coupling piece 311 projects along the thickness direction of the mounting plate 310.

The first support piece 312 is formed to be long. The first support piece 312 has a rectangular flat plate outer shape. The first support piece 312 has three first pin insertion holes 315. The first pin insertion holes 315 are provided in the central portion of the first support piece 312 and both end portions of the first support piece 312 along the longitudinal direction of the first support piece 312. The first pin insertion hole 315 penetrates in the thickness direction of the first support piece 312.

Each first pin insertion hole 315 has an outer shape of a long hole. The first pin insertion hole 315 at the central portion in the longitudinal direction of the first support piece 312 is provided in a direction in which the longitudinal direction of the elongated hole intersects the longitudinal direction of the first support piece 312. The first pin insertion holes 315 at both ends in the longitudinal direction of the first support piece 312 are provided such that the longitudinal direction of the elongated hole is along the longitudinal direction of the first support piece 312.

The connecting piece 313 is formed to be long. As shown in FIGS. 1 and 2, the connecting piece 313 has an L-shaped outer shape when viewed in the longitudinal direction of the connecting piece 313. The connection piece 313 is provided along the longitudinal direction of the mounting plate 310 at the second end of the mounting plate 310 opposite to the first end in the lateral direction. The connecting piece 313 projects along the thickness direction of the mounting plate 310. The connecting piece 313 is arranged so as to face the first connecting piece 311. The connection piece 313 is connected to the first support piece 312 on the side opposite to the mounting plate 310. The connecting piece 313 is connected to one end of the first supporting piece 312 in the lateral direction along the longitudinal direction of the first supporting piece 312. The connection piece 313 brings the first support piece 312 closer to the first coupling piece 311 than the second end of the attachment plate 310 along the lateral direction of the attachment plate 310.

In the first holding member 31, the mounting plate 310, the first coupling piece 311, the first supporting piece 312, and the connecting piece 313 are integrally formed. The first holding member 31 is formed by punching and bending a metal plate. Examples of the metal plate of the first holding member 31 include a steel plate.

As shown in FIGS. 1 and 2, the second holding member 32 has a bottom wall piece 320, a second coupling piece 321, a second support piece 322, and a reinforcing piece 323. The bottom wall piece 320 is formed in a long shape. The bottom wall piece 320 has a rectangular flat plate-like outer shape. The bottom wall piece 320 has three window holes 326. The three window holes 326 are provided in the central portion of the bottom wall piece 320 and both ends of the bottom wall piece 320 along the longitudinal direction of the bottom wall piece 320. Each window hole 326 penetrates in the thickness direction of the bottom wall piece 320. Each window hole 326 has a rectangular outer shape.

The second coupling piece 321 is formed to be long. The second coupling piece 321 has a rectangular flat plate-like outer shape. The second coupling piece 321 is provided at the first end of the bottom wall piece 320 in the lateral direction along the longitudinal direction of the bottom wall piece 320. The second coupling piece 321 projects along the thickness direction of the bottom wall piece 320. The second coupling piece 321 has three second screw insertion holes 324. The three second screw insertion holes 324 are provided in the central portion of the second coupling piece 321 and at both ends of the second coupling piece 321 along the longitudinal direction of the second coupling piece 321. Each second screw insertion hole 324 penetrates in the thickness direction of the second coupling piece 321. Each second screw insertion hole 324 has a circular outer shape.

The second support piece 322 is formed to be long. The second support piece 322 has a rectangular flat plate outer shape. The second support piece 322 is arranged along the longitudinal direction of the bottom wall piece 320 at a second end of the bottom wall piece 320 opposite to the first end in the lateral direction. The second support piece 322 projects along the thickness direction of the bottom wall piece 320. The second support piece 322 is arranged so as to face the second coupling piece 321. The second support piece 322 has three second pin insertion holes 325. The three second pin insertion holes 325 are provided in the central portion of the second support piece 322 and both end portions of the second support piece 322 along the longitudinal direction of the second support piece 322.

Each second pin insertion hole 325 has an elongated hole shape. Each second pin insertion hole 325 penetrates in the thickness direction of the second support piece 322. The second pin insertion hole 325 is provided corresponding to the first pin insertion hole 315. The second pin insertion hole 325 in the central portion in the longitudinal direction of the second support piece 322 is provided in a direction in which the longitudinal direction of the elongated hole intersects the longitudinal direction of the second support piece 322. The second pin insertion holes 325 at both ends in the longitudinal direction of the second support piece 322 are provided such that the longitudinal direction of the elongated hole is along the longitudinal direction of the second support piece 322.

The reinforcing piece 323 is formed in a long shape. The reinforcing piece 323 has a rectangular flat plate-like outer shape. The reinforcing piece 323 is arranged along the longitudinal direction of the second support piece 322 on the side opposite to the bottom wall piece 320 in the lateral direction of the second support piece 322. The reinforcing piece 323 projects along the thickness direction of the second support piece 322. The reinforcing piece 323 is arranged so as to face the bottom wall piece 320.

In the second holding member 32, the bottom wall piece 320, the second coupling piece 321, the second support piece 322, and the reinforcing piece 323 are integrally formed. The second holding member 32 is formed by punching and bending a metal plate. Examples of the metal plate of the second holding member 32 include a steel plate.

The 1st reflective sheet 33 is formed in a long size, as shown in FIG. The first reflecting sheet 33 has a first base portion 330, a first side portion 331, and a first fixing portion 332. The first base portion 330 is formed to be long. The first base portion 330 has a rectangular flat plate outer shape. The first side portion 331 is provided at the first end of the first base portion 330 in the lateral direction along the longitudinal direction of the first base portion 330. The first side portion 331 projects along the thickness direction of the first base portion 330. The first fixing portion 332 is provided along the longitudinal direction of the first base portion 330 at a second end of the first base portion 330 opposite to the first end in the lateral direction. The first fixing portion 332 projects along the thickness direction of the first base portion 330. The first fixing portion 332 is arranged to face the first side portion 331.

The first fixing portion 332 has three first pin holes 333. The three first pin holes 333 are provided in the central portion of the first fixing portion 332 and both end portions of the first fixing portion 332 along the longitudinal direction of the first fixing portion 332. Each first pin hole 333 penetrates in the thickness direction of the first fixing portion 332.

Each of the first pin holes 333 has an elongated outer shape. The first pin hole 333 is arranged corresponding to the first pin insertion hole 315 of the first holding member 31. The first pin hole 333 at the central portion in the longitudinal direction of the first fixing portion 332 is provided in a direction in which the longitudinal direction of the elongated hole intersects the longitudinal direction of the first fixing portion 332. The first pin holes 333 at both ends in the longitudinal direction of the first fixing portion 332 are provided such that the longitudinal direction of the elongated hole is along the longitudinal direction of the first fixing portion 332.

The first reflecting sheet 33 includes a first base portion 330, a first side portion 331, and a first fixing portion 332. The surface of the first reflective sheet 33 is reflective and diffusive to the light from the LED 300. The first reflective sheet 33 has electrical insulation. The first reflection sheet 33 is made of a resin material. The first reflection sheet 33 is colored white. Examples of the resin material of the first reflective sheet 33 include polyethylene terephthalate.

The second reflection sheet 34 is formed in a long shape as shown in FIG. The second reflection sheet 34 has a second base portion 340 and a second fixing portion 341. The second base portion 340 is formed to be long. The second base 340 has a rectangular flat plate outer shape. The second fixing portion 341 is formed to be long. The second fixing portion 341 has a rectangular flat plate outer shape. The second fixing portion 341 is provided at one end of the second base portion 340 in the lateral direction along the longitudinal direction of the second base portion 340. The second fixing portion 341 projects along the thickness direction of the second base portion 340.

The second fixing portion 341 has three second pin holes 342. The three second pin holes 342 are provided in the central portion of the second fixing portion 341 and both end portions of the second fixing portion 341 along the longitudinal direction of the second fixing portion 341. Each second pin hole 342 penetrates in the thickness direction of the second fixing portion 341.

Each of the second pin holes 342 has an elongated outer shape. The second pin hole 342 is arranged corresponding to the second pin insertion hole 325 of the second holding member 32. The second pin hole 342 at the central portion in the longitudinal direction of the second fixing portion 341 is provided in a direction in which the longitudinal direction of the elongated hole intersects the longitudinal direction of the second fixing portion 341. The second pin holes 342 at both ends in the longitudinal direction of the second fixing portion 341 are provided such that the longitudinal direction of the elongated hole is along the longitudinal direction of the second fixing portion 341.

The second reflecting sheet 34 includes the second base portion 340 and the second fixing portion 341 integrally formed. The surface of the second reflective sheet 34 is reflective and light diffusive to the light from the LED 300, similarly to the first reflective sheet 33. The second reflective sheet 34 has electrical insulation. The second reflective sheet 34 is made of the same resin material as the first reflective sheet 33. The second reflective sheet 34 may be formed not only of the same resin material as the first reflective sheet 33 but also of a different resin material.

The elastic sheet 35 is formed in a long shape. The elastic sheet 35 has a rectangular flat plate outer shape. The elastic sheet 35 is formed of a material having elasticity. Examples of the material of the elastic sheet 35 include silicone rubber.

As shown in FIG. 2, each of the plurality of pins 36 has a pin body 360 and a flange 361. The pin body 360 has a columnar outer shape. The flange 361 has a ring-shaped outer shape. The flange 361 is provided at the center of the pin body 360 along the longitudinal direction of the pin body 360. The flange 361 projects outward along the axis of the pin body 360. The pin 36 does not necessarily have to include the flange 361, and may be composed of only the pin body 360. The pin body 360 may be formed with a male screw. The diameter of the pin body 360 is slightly smaller than the length in the lateral direction of each of the first pin insertion hole 315 of the first holding member 31 and the second pin insertion hole 325 of the second holding member 32.

The light guide plate 5 is formed in an elongated shape as shown in FIGS. 1 and 2. The light guide plate 5 has a rectangular flat plate outer shape. The light guide plate 5 has three through holes 50. The three through holes 50 are provided in the central portion of the light guide plate 5 in the longitudinal direction and both end portions of the light guide plate 5. Each of the three through holes 50 is provided at one end of the light guide plate 5 in the lateral direction. Each through hole 50 penetrates in the thickness direction of the light guide plate 5. Each through hole 50 has a circular outer shape. Each through hole 50 is formed to be slightly larger than the outer shape of the pin body 360. The pin body 360 of the pin 36 is inserted into the through hole 50. The through hole 50 is formed so that the flange 361 of the pin 36 is not inserted therethrough. In the light guide plate 5, the pins 36 are attached to the light guide plate 5 by inserting the pins 36 into the through holes 50. The light guide plate 5 is arranged such that the first main surface 5aa of the pair of main surfaces facing each other in the thickness direction faces the side plate 21 of the instrument body 2. The light guide plate 5 has irregularities on the second main surface 5ab opposite to the first main surface 5aa. As shown in FIG. 2, the light guide plate 5 is arranged such that the second main surface 5ab faces the reflecting member 4.

When the light guide plate 5 is sandwiched by the pair of sandwiching members 39, the first pin insertion hole 315 at the central portion in the longitudinal direction of the first supporting piece 312 and the second pin at the central portion in the longitudinal direction of the second supporting piece 322. One pin 36 is inserted into the insertion hole 325. When the light guide plate 5 is sandwiched by the pair of sandwiching members 39, the first pin insertion hole 315 at one end of the first support piece 312 in the longitudinal direction and the one end of the second support piece 322 in the longitudinal direction. One pin 36 is inserted into the second pin insertion hole 325 of the. In the case where the light guide plate 5 is sandwiched by the pair of sandwiching members 39, the first pin insertion hole 315 at the other end of the first support piece 312 opposite to the one in the longitudinal direction and the longitudinal direction of the second support piece 322 in the longitudinal direction. One pin 36 is inserted into the second pin insertion hole 325 at the other end opposite to the one end.

When the light guide plate 5 is sandwiched by the pair of sandwiching members 39, the light guide plate 5 is sandwiched by the first supporting pieces 312 of the first sandwiching member 31 via the first fixing portion 332 of the first reflecting sheet 33 and the elastic sheet 35. The first main surface 5aa is pressed from the thickness direction of the. When the light guide plate 5 is sandwiched by the pair of sandwiching members 39, from the thickness direction of the light guide plate 5 by the second support piece 322 of the second sandwiching member 32 via the second fixing portion 341 of the second reflection sheet 34. The second main surface 5ab is pushed.

The light guide plate 5 has translucency. The light guide plate 5 is a molded body made of a resin material. Examples of the resin material of the light guide plate 5 include acrylic resin and polycarbonate resin.

As shown in FIGS. 2 and 3, the fixing member 7 includes a spacer member 38a and a fixing screw 38b. The spacer member 38a includes a fixed body 7a, a spacer 7b, and a protruding piece 7c. The fixed main body 7a is formed to be long. The fixed main body 7a has a rectangular flat plate-like outer shape. The fixed main body 7a is provided with a hole penetrating in the thickness direction. The spacer 7b is formed long. The spacer 7b has a prismatic outer shape. The spacer 7b is provided at one end in the longitudinal direction of the fixed main body 7a and in the center portion in the lateral direction of the fixed main body 7a in a front view. The spacer 7b projects outward in a direction orthogonal to the thickness direction of the fixed body 7a.

The protruding piece 7c is formed to be long. The protruding piece 7c has a rectangular flat plate-like outer shape. The protruding piece 7c is arranged along the lateral direction of the fixed body 7a at the first end in the longitudinal direction of the fixed body 7a. The projecting piece 7c is provided opposite to the spacer 7b via the fixed main body 7a in a front view. The protruding piece 7c protrudes along the thickness direction of the fixed main body 7a. The protruding amount of the protruding piece 7c is slightly smaller than the thickness of the mounting substrate 301. The protruding piece 7c is arranged along the side edge 301c so as to abut against the side edge 301c of the mounting substrate 301.

The fixed main body 7 a of the spacer member 38 a is arranged on the first end side of the mounting substrate 301. The fixed body 7a is not arranged between two adjacent LEDs 300. In the spacer member 38a, the fixing screw 38b is inserted into a hole penetrating in the thickness direction of the fixing body 7a.

The spacer member 38a is made of a resin material. Examples of the resin material of the spacer member 38a include acrylic resin, epoxy resin, and silicone resin. The spacer member 38a contains a light diffusing material in a resin material. Examples of the light diffusion material include barium titanate and silicon dioxide. The spacer member 38a is a white material that reflects the light from the plurality of LEDs 300 because the light diffusing material such as barium titanate or silicon dioxide is contained in the resin material. The spacer member 38a is not limited to being formed of a resin material. The spacer member 38a may be formed of a metal material. When the spacer member 38a is formed of a metal material, the spacer member 38a may be formed to have a white coating film on the surface of the spacer member 38a so as to reflect the light from the plurality of LEDs 300. The white coating film contains, for example, a light diffusion material such as barium titanate or silicon dioxide.

As shown in FIGS. 4, 5A and 6, the reflecting member 4 includes a reflecting plate 40, four reflecting side plates 41, two hooks 42, and a mounting spring 43. The reflection plate 40 has a rectangular flat plate-like outer shape. The reflection plate 40 has a similar shape to the bottom plate 20 of the instrument body 2 in a front view. The reflector 40 is formed to be slightly smaller than the bottom plate 20 of the instrument body 2. The reflecting side plate 41 is provided along the four sides of the reflecting plate 40, as shown in FIGS. 4 and 6. Each of the reflection side plates 41 projects along the thickness direction of the reflection plate 40. The reflection side plate 41 is formed integrally with the reflection plate 40.

The reflecting member 4 is formed by punching and bending a metal plate. Examples of the metal plate of the reflecting member 4 include a steel plate. The reflection member 4 is arranged so as to be surrounded by the instrument body 2.

As shown in FIG. 6, the hook 42 has a rhombic plate-like outer shape in a side view. The hook 42 projects in the same direction as the reflection side plate 41 in the thickness direction of the reflection plate 40. The hooks 42 are arranged at both ends along one side of the rectangular reflection plate 40, corresponding to the hook springs 12 shown in FIGS. 4 and 6. Each hook 42 is sandwiched between the corresponding hook springs 12.

The attachment spring 43 is attached to the reflection plate 40. The mounting spring 43 is, for example, a torsion coil spring. As shown in FIGS. 5B and 5C, the mounting spring 43 is arranged such that the coil portion of the torsion coil spring can project outward from the hook hole 25 of the instrument body 2.

The power supply unit 6 is attached to the bottom plate 20 of the instrument body 2 as shown in FIG. The power supply unit 6 has a housing 61. The housing 61 is formed to be long. The housing 61 has a rectangular box-like outer shape with one surface open. The housing 61 is arranged so that the opening is closed by the bottom plate 20. The housing 61 is attached to the bottom plate 20 with, for example, attachment screws. The housing 61 is formed of a metal plate material. The housing 61 is formed by punching and bending a metal plate material. The housing 61 accommodates a power supply board inside. The power supply board is electrically connected to the power line via the first terminal block 10. The power supply board is electrically connected to the signal line via the second terminal block 11.

A plurality of types of electrical components are mounted on the power board. Examples of the plurality of types of electrical components include a transformer, a diode, a capacitor, a switching element, and a drive IC (Integrated Circuit) that controls switching of the switching element. A plurality of types of electrical components are appropriately electrically connected to form a power supply circuit. The power supply circuit generates lighting power for the LED 300. The power supply circuit supplies predetermined power to the pair of connectors 302 on the mounting board 301. The power supply circuit includes, for example, a step-up chopper circuit and a step-down chopper circuit. The power supply circuit rectifies an AC voltage from an external power supply such as a commercial AC power supply into a DC voltage. The power supply circuit steps up and down the rectified DC voltage and outputs a current that matches a predetermined target value. The power supply unit 6 and the LED unit 3 are electrically connected by a power supply line. The power supply line is a power supply wire for supplying power from the power supply unit 6 to the LED unit 3.

The lighting fixture 1X turns on the LED 300 by supplying power to the LED unit 3 from the power supply unit 6. The light emitted from the LED 300 enters the light guide plate 5 from the one end surface 5 a of the light guide plate 5 and is guided inside the light guide plate 5. The light guided through the light guide plate 5 is diffused by the unevenness formed on the second main surface 5ab of the light guide plate 5 and is emitted to the outside. The light emitted from the second main surface 5ab of the light guide plate 5 and diffused is reflected by the reflection plate 40 inside the instrument body 2. The light reflected by the reflection plate 40 is applied to the illuminated surface facing the reflection plate 40.

Below, the assembly process of the lighting fixture 1X is demonstrated. First, the assembly process of the LED unit 3 will be described.

In the assembly process of the LED unit 3, the first holding member 31 and the first reflecting sheet 33 are arranged so that the first base portion 330 of the first reflecting sheet 33 and the LED module 30 are sequentially overlapped with the mounting plate 310 of the first holding member 31. And the LED module 30 are arranged. Fixing screws are provided in the holes provided in the fixing body 7a of the spacer member 38a, the first screw insertion holes 303 of the mounting substrate 301 of the LED module 30, and the holes provided in the first base portion 330 of the first reflecting sheet 33. 38b is inserted. The fixing screw 38b is screwed into the first screw hole 316 of the mounting plate 310 of the first holding member 31 via the spacer member 38a, the LED module 30, and the first reflection sheet 33. As the fixing screw 38b is screwed into the first screw hole 316, the spacer member 38a, the LED module 30, and the first reflecting sheet 33 are fixed to the mounting plate 310 of the first holding member 31, as shown in FIG. .. As shown in FIG. 3, in the spacer member 38a, the fixing body 7a is arranged on the first end side in the lateral direction of the mounting substrate 301 in a state where the fixing screw 38b is fixed to the mounting plate 310. The spacer 7b projects from the fixed body 7a toward the second end side of the mounting substrate 301 in the lateral direction. In the spacer member 38a, the tip portion of the spacer 7b is arranged between two adjacent LEDs 300 with the fixing screw 38b fixed to the mounting plate 310. In the spacer member 38a, the protruding piece 7c contacts the side edge 301c of the mounting substrate 301 in a state where the fixing screw 38b is fixed to the mounting plate 310.

Next, the pin body 360 of the pin 36 includes the second pin hole 342 of the second reflection sheet 34, the through hole 50 of the light guide plate 5, the first pin hole 333 of the first reflection sheet 33, and the first holding member. The first pin insertion hole 315 of 31 is inserted in order. Then, the pin body 360 of the pin 36 is inserted into the second pin insertion hole 325 of the second holding member 32 via the flange 361. The second connecting piece 321 of the second holding member 32 is overlapped with the first connecting piece 311 of the first holding member 31. The coupling screw 37 inserted into the second screw insertion hole 324 of the second coupling piece 321 is screwed into the female screw portion 314 of the first coupling piece 311. As shown in FIG. 2, the elastic sheet 35 is sandwiched between the second fixing portion 341 of the second reflective sheet 34 and the second support piece 322.

By screwing the coupling screw 37 into the female screw portion 314, the first coupling piece 311 of the first clamping member 31 and the second coupling piece 321 of the second clamping member 32 are coupled. The first sandwiching member 31 and the second sandwiching member 32 sandwich and hold the light guide plate 5 with three pins 36 penetrating in the thickness direction of the light guide plate 5. One end surface 5 a of the light guide plate 5 faces the LEDs 300 of the LED module 30 mounted on the mounting plate 310 of the first holding member 31 and the spacer 7 b. The light guide plate 5 is supported by the first support piece 312 of the first sandwiching member 31 and the second support piece 322 of the second sandwiching member 32 in the thickness direction via the pin 36. The LED unit 3 is assembled by holding the light guide plate 5 between the first holding member 31 and the second holding member 32. In the LED unit 3, the light guide plate 5 and the mounting substrate 301 are arranged such that the distance between the one end surface 5 a of the light guide plate 5 and the plurality of LEDs 300 is smaller than the distance between two adjacent LEDs 300.

Next, the LED unit 3 is attached to the instrument body 2. In the assembly process, the mounting plate 310 of the LED unit 3 is overlaid on the bottom plate 20 of the device body 2. The mounting plate 310 is arranged along a side edge of the bottom plate 20 having a rectangular shape in a front view. Through the window hole 326 in the bottom wall piece 320 of the second holding member 32, the bolt 13 is inserted into the bolt insertion hole in the mounting plate 310 of the first holding member 31 and the hole provided in the bottom plate 20 of the instrument body 2. It As shown in FIG. 2, the bolt 14 has a nut 14 tightened so as to sandwich the mounting plate 310 of the first clamping member 31 and the bottom plate 20. The LED unit 3 is attached to the peripheral portion of the bottom plate 20 of the fixture body 2 by tightening the bolt 13 to the nut 14. The LED unit 3 is attached to each of the peripheral portions of the bottom plate 20 of the instrument body 2. That is, the lighting fixture 1X according to the present embodiment includes the above-described LED unit 3 and the fixture body 2 to which the LED unit 3 is attached.

Hereinafter, it will be described that the LED unit 3 of the present embodiment can improve the assembly workability.

By the way, in the LED unit, it is preferable that the distance between the one end surface of the light guide plate and the LED is as short as possible in order to allow the light from the LED to efficiently enter the light guide plate. In the LED unit, the light guide plate thermally expands or contracts due to turning on or off of the LED. In the LED unit, if the one end surface of the light guide plate and the LED are in contact with each other in order to allow the light from the LED to efficiently enter the light guide plate, stress is applied to the LED due to thermal expansion or contraction of the light guide plate. May be added. When stress is applied from the light guide plate, the LED not only deteriorates the reliability of the electrical connection and the mechanical connection with the mounting substrate, but also sometimes becomes a non-light.

In order to prevent the heat generated in the LED from being transferred to the light guide plate, it is conceivable to provide a predetermined gap between the LED unit and one end face of the light guide plate. In the LED unit, if a gap is provided between the one end surface of the light guide plate and the LED, it is possible to prevent the light guide plate from applying stress to the LED even if the light guide plate expands.

In the LED unit, when the assembly work is performed while maintaining a predetermined gap between the one end surface of the light guide plate and the LED, the light guide plate and the LED may hit each other during the assembly work. In the LED unit, if the light guide plate and the LED hit each other, the LED may be damaged. In the LED unit, when the assembly work is performed simply by maintaining a predetermined gap between the one end surface of the light guide plate and the LED so that the one end surface of the light guide plate and the LED do not hit each other, the one end surface of the light guide plate and the LED Assembling work tends to be worse as compared with the case where the assembling work is performed in contact with.

In the LED unit, a spacer may be arranged on the mounting board so that the one end surface of the light guide plate and the LED do not contact each other. In the case of simply providing a new spacer for the LED unit, the work of separately mounting the spacer increases, and it is difficult to improve the assembly workability.

In the LED unit 3 of this embodiment, the fixing member 7 includes a spacer member 38a having a spacer 7b, and a fixing screw 38b for fixing the mounting substrate 301 together with the spacer member 38a to the mounting plate 310. The spacer 7b prevents the one end surface 5a of the light guide plate 5 and the plurality of LEDs 300 from coming into contact with each other. The fixing member 7 has both the function of fixing the mounting substrate 301 to the mounting plate 310 and the function of preventing one end surface 5 a of the light guide plate 5 from hitting the LEDs 300. In the LED unit 3 of the present embodiment, the fixing member 7 has a function of fixing the mounting substrate 301 to the mounting plate 310 and a function of preventing the one end surface 5a of the light guide plate 5 and the plurality of LEDs 300 from hitting each other. Since it is not necessary to attach a spacer to, the workability of assembly can be improved.

Further, in an LED unit including a light guide plate, if there is a member that absorbs light from the LED between two adjacent LEDs, color unevenness tends to be noticeable in the light emitted from the light guide plate. In the LED unit, when a spacer is arranged between two adjacent LEDs, if the spacer absorbs a large amount of light from the LED, uneven light may be noticeable in the light emitted from the light guide plate. Particularly, in the LED unit, the spacer may not be arranged all over between the plurality of LEDs. In the LED unit, when a configuration in which a spacer is provided between two adjacent LEDs and a configuration in which a spacer is not provided between two adjacent LEDs are mixed, color unevenness occurs in light emitted from the light guide plate. It may become apparent.

In the LED unit 3 of this embodiment, the spacer 7b arranged between two adjacent LEDs 300 is formed of a resin molded product containing a light diffusing material. The spacer 7b is a resin molded product containing a light diffusing material, and is a white material that efficiently diffuses and reflects light from the plurality of LEDs 300. Since the spacer 7b is made of a white material that efficiently diffuses and reflects the light from the plurality of LEDs 300, it is possible to suppress the occurrence of color unevenness in the light emitted from the light guide plate 5. For example, the spacer 7b may diffuse and reflect 80% or more of visible light in the light from the LED 300.

In other words, in the LED unit 3 of the present embodiment, it is preferable that at least the surface of the spacer 7b is made of a material that diffuses and reflects light from the LEDs 300.

In the LED unit 3 of the present embodiment, the spacer 7b has a surface formed of a material that diffuses and reflects light from the plurality of LEDs 300, so that even if the spacer 7b is not provided between all the adjacent LEDs 300. It is possible to suppress the occurrence of color unevenness.

Further, in the LED unit, when the fixing body having the spacer is screwed with the fixing screw, the spacer may rotate around the axis of the fixing screw as the fixing screw is screwed.

In the LED unit 3 of this embodiment, the fixing member 7 has the protruding piece 7c. The protruding piece 7c protrudes in the thickness direction of the mounting substrate 301. The protruding piece 7c contacts the side edge 301c of the mounting substrate 301. The protruding piece 7c preferably suppresses rotation of the spacer 7b on the mounting surface 301a in a direction intersecting with the side edge 301c.

In the LED unit 3 of the present embodiment, the spacer 7b is prevented from rotating in the direction in which the projecting piece 7c intersects the side edge 301c of the mounting board 301, so that the mounting board 301 is stably fixed to the mounting plate 310. To be done. In the LED unit 3, when the spacer 7b is screwed to the mounting plate 310 with the fixing screw 38b, the spacer 7b is suppressed from rotating around the axis of the fixing screw 38b by the protruding piece 7c.

Below, the construction process of the lighting fixture 1X is demonstrated easily.

In the process of constructing the lighting fixture 1X, the fixture body 2 is embedded in an embedding hole provided in the ceiling material. A plurality of suspension bolts are exposed to the indoor space from the embedding hole. In the device body 2, the hanging bolts are inserted into the mounting holes 23 of the bottom plate 20 and the long hole portions 220 of the two reinforcing plates 22, respectively. The nuts are tightened to the suspension bolts inserted through the mounting holes 23 and the long hole portions 220, respectively. In the lighting fixture 1X, the fixture body 2 is attached to the suspension bolt by tightening the nut on the suspension bolt. The outer collar portion 212 of the side plate 21 of the instrument body 2 blinds the gap between the side plate 21 and the embedding hole.

Next, the hook portions provided on the respective tip portions of the pair of arm portions of the attachment spring 43 are hooked on the peripheral edges of the hook holes 25 of the bottom plate 20 of the instrument body 2. The reflecting member 4 is temporarily held by the instrument body 2 while being suspended from the bottom plate 20 by the mounting spring 43. In the state where the reflection member 4 is temporarily held by the device body 2, the electric wire drawn from one of the two electric wire insertion holes 24 of the bottom plate 20 is electrically connected to the first terminal block 10. To be done. Of the two electric wire insertion holes 24 of the bottom plate 20, the signal wire drawn from the other electric wire insertion hole 24 is electrically connected to the second terminal block 11.

Finally, the reflection member 4 is housed in the space surrounded by the bottom plate 20 and the four side plates 21 of the instrument body 2. The pair of arm portions of the mounting spring 43 spread outward while being inserted into the hook holes 25, and the portions of the pair of arm portions near the coil portions that are the roots of the arm portions are hooked on the periphery of the hook holes 25 of the bottom plate 20. The two hooks 42 are hooked on the two hooking springs 12 attached to the bottom plate 20 of the instrument body 2, as shown in FIGS. 4 and 6. As shown in FIGS. 5A, 6 and 7, the reflecting member 4 is supported by the instrument body 2 by the spring force of the attachment spring 43 and the two hooking springs 12 while being housed in the internal space of the instrument body 2. To be done. The lighting fixture 1X is installed in a state where it is embedded in the embedding hole of the ceiling material.

Next, the LED unit 3 of the modification 1 of this embodiment is demonstrated with reference to FIG.

By the way, in the LED unit, when a spacer is arranged between two adjacent LEDs, the light incident from the LED to the light guide plate may be blocked by the spacer.

In the LED unit 3 of the modified example 1, in the side view shown in FIG. 8, the spacer 7b has a semicircular inclined surface 7ba so that the width along the lateral direction of the spacer 7b becomes narrower as the distance from the mounting surface 301a increases. Have Since the spacer 7b has a semicircular outer shape in a side view, it is possible to suppress light from the LED 300 from being blocked by the spacer 7b, as compared with a configuration having a rectangular outer shape. .. The spacer 7b is not limited to the configuration having a semicircular outer shape in a side view, and may have a configuration having a semielliptical outer shape or a triangular outer shape.

In other words, in the LED unit 3 of Modification 1, the spacer 7b is preferably narrower in width along the lateral direction between the two adjacent LEDs 300 as the distance from the mounting surface 301a increases.

The LED unit 3 of the first modification has a configuration in which the width of the spacer 7b along the lateral direction becomes narrower as it goes away from the mounting surface 301a, and light from the LED 300 can be suppressed from being blocked by the spacer 7b.

Next, the LED unit 3 of the modification 2 of this embodiment is demonstrated based on FIG.

In the LED unit 3 of the modification 2, the spacer member 38a has the fixed main body 7a and the spacer 7b. The fixed main body 7a has an annular plate-like outer shape. The spacer 7b has a prismatic outer shape. The spacer 7b projects outward from the outer periphery of the fixed main body 7a when viewed from the front. The shaft of the fixing screw 38b is inserted into the annular plate-shaped hole of the stationary body 7a. In the spacer member 38a, the fixing screw 38b is screwed to the mounting plate 310 via the fixing body 7a and the mounting substrate 301.

The mounting substrate 301 has a protrusion 7e on the mounting surface 301a. The protrusion 7e is formed of, for example, solder. The projections 7e are provided on both sides in the lateral direction of the spacer 7b so as to sandwich the tip of the spacer 7b in a front view. The LED unit 3 uses the solder formed on the land of the mounting surface 301a as the protrusion 7e. The protrusion 7e is not limited to solder and may be any member that protrudes from the mounting surface 301a.

In the LED unit 3 of Modification 2, the protrusion 7e restricts the movement of the spacer 7b in the direction intersecting the longitudinal direction of the spacer 7b, thereby facilitating the alignment of the spacer 7b. In particular, when the mounting substrate 301 is fixed by the fixing screw 38b, the LED unit 3 can prevent the spacer member 38a from rotating around the axis of the fixing screw 38b when the fixing screw 38b is screwed.

In other words, in the LED unit 3, the mounting substrate 301 has the protrusion 7e. The protrusion 7e projects from the mounting surface 301a along the thickness direction of the mounting substrate 301. It is preferable that the protrusion 7e restricts rotation of the mounting surface 301a in a direction intersecting the longitudinal direction of the spacer 7b.

Next, the LED unit 3 of the modification 3 of this embodiment is demonstrated based on FIGS. 10-12.

In the LED unit 3 of the modified example 3, the fixing member 7 has a holding piece 7d in addition to the fixing body 7a, the spacer 7b, and the protruding piece 7c. The fixed main body 7a does not have a hole penetrating in the thickness direction. The protruding piece 7c has a rectangular flat plate-like outer shape. The projecting piece 7c projects along the thickness direction of the fixed main body 7a. The protruding amount of the protruding piece 7c is larger than the thickness of the mounting substrate 301. The sandwiching piece 7d has a rectangular flat plate-like outer shape. The sandwiching piece 7d is provided on the opposite side of the projecting piece 7c from the fixed body 7a. The holding piece 7d is arranged so as to face the fixed body 7a by the protruding piece 7c. The fixed member 7 is formed such that the distance between the fixed body 7a and the sandwiching piece 7d is slightly smaller than the total thickness of the mounting substrate 301 and the mounting plate 310. The fixing member 7 has elasticity so that the fixed body 7a and the sandwiching piece 7d can maintain a predetermined distance.

The mounting plate 310 has an opening hole 31aa. The opening hole 31aa penetrates in the thickness direction of the mounting plate 310. The opening hole 31aa is formed in a rectangular shape in a front view. The holding piece 7d of the fixing member 7 is inserted into the opening hole 31aa. The sandwiching piece 7d inserted into the opening hole 31aa is slid along the lateral direction of the mounting substrate 301. When the holding piece 7d is slid until the protruding piece 7c hits the side edge 301c, the fixing member 7 holds the end portion of the mounting substrate 301 between the fixing body 7a and the holding piece 7d in the thickness direction. Since the fixing member 7 has a structure in which the end of the mounting board 301 is sandwiched between the fixing body 7a and the sandwiching piece 7d from the thickness direction, the mounting board 301 can be fixed to the mounting plate 310 without using the fixing screw 38b. .. Since the mounting substrate 301 can be fixed to the mounting plate 310 without using the fixing screw 38b, the fixing member 7 can further improve the assembly workability. The fixing member 7 is formed of an elastic molded product. Examples of the resin material of the fixing member 7 include fluororesin, epoxy resin, and silicone resin.

In other words, in the LED unit 3 of Modification 3, the fixing member 7 has the fixing main body 7a and the sandwiching piece 7d. The fixed body 7a and the sandwiching piece 7d are arranged along the thickness direction of the mounting substrate 301 so as to face each other with the mounting substrate 301 and the mounting plate 310 interposed therebetween. The fixing member 7 preferably has a clip structure that holds the end of the mounting substrate 301 from the thickness direction by the fixing body 7a and the holding piece 7d.

The LED unit 3 of this embodiment and the lighting fixture 1X including the LED unit 3 may be configured by appropriately applying any one of the configurations of the above-described modified examples 1 to 3.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the technical idea of the present invention.

1X Lighting fixture 2 Fixture main body 3 LED unit 5 Light guide plate 5a One end surface 7 Fixing member 7a Fixing main body 7b Spacer 7c Projecting piece 7d Clamping piece 7e Projecting part 300 LED
301 mounting board 301a mounting surface 301c side edge 310 mounting plate

Claims (5)

Multiple LEDs,
A long mounting board on which the plurality of LEDs are mounted on a mounting surface along the longitudinal direction;
A light guide plate that guides the light of the plurality of LEDs and emits the light to the outside;
A mounting plate on which the mounting substrate is arranged so that light from the plurality of LEDs is incident on one end surface of the light guide plate;
A fixing member for fixing the mounting board to the mounting plate,
The fixing member includes a fixing body fixed to the mounting plate with a fixing screw, a long spacer protruding from the fixing body, and a mounting body protruding from the fixing body along a thickness direction of the mounting board. It has a side edge and a protruding piece that hits it,
The spacer is arranged such that the longitudinal direction is along the lateral direction of the mounting board,
The spacer is provided between two adjacent LEDs of the plurality of LEDs, and between the one end surface and the mounting surface,
The spacer in the thickness direction of the mounting substrate has higher Kuna' than the height of the height from the mounting surface of the plurality of LED,
The LED piece is characterized in that the protruding piece restricts the spacer from rotating in a direction intersecting with the side edge on the mounting surface as the fixing screw rotates . Multiple LEDs,
A long mounting board on which the plurality of LEDs are mounted on a mounting surface along the longitudinal direction;
A light guide plate that guides the light of the plurality of LEDs and outputs the light to the outside;
A mounting plate on which the mounting substrate is arranged so that light from the plurality of LEDs is incident on one end surface of the light guide plate;
A fixing member for fixing the mounting board to the mounting plate,
The fixing member has a fixing body fixed to the mounting plate by a fixing screw, and a long spacer protruding from the fixing body,
The spacer is arranged such that the longitudinal direction is along the lateral direction of the mounting board,
The spacer is provided between two adjacent LEDs of the plurality of LEDs, and between the one end surface and the mounting surface,
In the thickness direction of the mounting board, the spacer has a height from the mounting surface higher than the height of the plurality of LEDs,
The mounting board has a protrusion that protrudes from the mounting surface along the thickness direction of the mounting board.
The LED unit is characterized in that the protrusion section restricts rotation on the mounting surface in a direction intersecting a longitudinal direction of the spacer as the fixing screw rotates. The LED unit according to claim 1 or 2 , wherein the spacer has a width along the lateral direction between the two adjacent LEDs that is narrower as the distance from the mounting surface increases. The LED unit according to claim 1, wherein at least the surface of the spacer is formed of a material that diffuses and reflects light from the plurality of LEDs. A lighting fixture comprising: the LED unit according to any one of claims 1 to 4 ; and a fixture main body to which the LED unit is attached .

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