JP2013062062A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim at weight saving and thinning of a lighting fixture of a direct ceiling fitting type.SOLUTION: An LED module 22 with LEDs 222 mounted on a circuit board 221 is installed on a chassis 21 having concave parts 212 formed protruded outward. Fitting brackets 25 for insertion-fitting the concave parts 212 in are provided at embedding holes 191 formed on a ceiling plate 19.

Description

  Embodiments of the present invention relate to a lighting fixture installed on a ceiling portion, for example.

  Conventionally, when a lighting fixture is attached to a ceiling structure, a supported portion in which a long hole is formed is provided in the fixture main body of the lighting fixture, and the fixture main body is attached to the hanging bolt vertically supported from the ceiling with a nut. What to attach is known. Separately, it is considered that a lighting fixture is attached to a field material by locking a clip attached to a ceiling structure called a field material to the hole.

JP 2002-1003004 A

  When attaching a lighting fixture to a hanging bolt from the ceiling, the hanging bolt protrudes downward from the chassis surface of the lighting fixture, so there is a possibility that the hanging bolt may interfere with a light source such as an LED module. . For this reason, it has been difficult to reduce the thickness of the lighting fixture.

  This embodiment is to provide a lighting fixture that can be thinned.

  According to this embodiment, the LED module in which the LED is mounted on the circuit board, the chassis in which the LED module is installed and the concave portion protruding outward is formed, and the embedded hole formed in the ceiling plate And a fitting that is configured to be inserted into the recess.

  According to the embodiment of the present invention, it is possible to reduce the thickness of the lighting fixture.

It is a partially cutaway perspective view for explaining one embodiment about a lighting fixture. It is a front view of FIG. FIG. 3 is an exploded cross-sectional view taken along line Ia-Ib in FIG. 2. It is sectional drawing of the Ia-Ib line | wire of FIG. It is sectional drawing which expands and shows a part of FIG. It is the IIa-IIb line | wire sectional view taken on the line of FIG.

  Hereinafter, embodiments will be described in detail with reference to the drawings.

  1 to 6 are for explaining an embodiment related to a lighting fixture. FIG. 1 is a perspective view with a part cut away, FIG. 2 is a front view, and FIG. 3 is Ia-Ib in FIG. 4 is a sectional view taken along the line Ia-Ib in FIG. 2, FIG. 5 is a sectional view showing a part of FIG. 4 in an enlarged manner, and FIG. 6 is a sectional view taken along the line IIa-IIb in FIG. is there.

  In FIG. 1, reference numeral 11 denotes a plurality of suspension bolts that are vertically fixed and suspended from a ceiling structure such as a ceiling slab of an office building. Each suspension bolt 11 is attached with a hanger 13, which is a field material suspension fitting, using a nut 12 or the like, and a plurality of field materials 14, which are support members, are supported by the hanger 13. Each of the field members 14 has a substantially U-shaped cross section, and a plurality of the field members 14 are installed in parallel to each other.

  Further, in a direction crossing the field edge material 14, for example, a direction orthogonal thereto, the single field edge receiving material 15 is attached by a single clip 16, and the double field edge receiving material 17 is attached by a double clip 18. A ceiling plate 19 is attached to the single field edge receiving material 15 and the double field edge receiving material 17.

  The lighting fixture 20 includes, for example, a metal-made rectangular box-shaped chassis 21 formed of a mold, an LED (light emitting diode) module 22 disposed in an open portion of the chassis 21, and a light emitting surface of the LED module 22. It is comprised from the diffuse translucent cover 23 which covers. The cover 23 is made of, for example, a surface of an acrylic resin molded body that has been subjected to frost processing in order to impart diffusibility.

  As shown in FIGS. 3 and 4, a bottomed cylindrical concave portion 212 that protrudes upward is formed at two locations in the longitudinal direction of the bottom surface portion 211 of the chassis 21, and a mounting bolt 30 described later is inserted therethrough. A mounting hole 213 having a size that can be used is formed. Reference numeral 214 denotes a nut that is screwed onto the mounting bolt 30. A metal substrate 24 is placed in the opening 215 of the chassis 21.

  The LED module 22 has a plurality of LEDs 222 mounted on a circuit board 221 having heat dissipation and insulation. In the LED module 22 in this embodiment, a surface opposite to the surface of the circuit substrate 221 on the side where the LEDs 22 arranged in parallel along the longitudinal direction are attached is fixed to the substrate 24. The heat generated by the LED 22 is effectively radiated through the circuit board 221 and the board 24.

  Each LED 222 is electrically connected in series via a wiring pattern (not shown). The LED 222 can select a required light emission color (color temperature), for example, a light emission color corresponding to daylight white or a light bulb color.

  As shown in FIGS. 3 to 6, an embedding hole 191 having a diameter of about 100 mm is formed in the ceiling plate 19 at a position corresponding to the recesses 212 formed at two locations of the chassis 21. A cylindrical fixture 25 having a bottom 251 and having a flange 252 that extends laterally from the end of the open portion is attached to the embedding hole 191. The flange portion 252 serves as a stopper for preventing the fitting 25 from entering the embedded hole 191 more than necessary. The inner diameter of the fixture 25 is large enough to fit the recess 212 of the chassis 21. One end of the mounting bolt 30 is fixed to the center of the bottom 251 of the mounting tool 25 and hangs downward with a length that does not exceed the axial length of the mounting tool 25. Further, on the side surface of the fixture 25, a notch 254 is formed that is positioned above the ceiling plate 19 when the fixture 25 is attached to the ceiling plate 19.

  A chain 26 has one end attached to a part of the recess 212 of the chassis 21 and the other end attached to the vicinity of the bottom 251 of the fixture 25. The chain 26 has a length that is, for example, about twice the axial length of the fixture 25 and has a function of preventing the chassis 21 from falling.

  Reference numeral 27 denotes a power supply unit in which, for example, an AC / DC converter, a rectifier, and the like are integrally housed. It is installed in either.

  Furthermore, 28 is a connector attached to the bottom 251 of the fixture 25, and this connector 28 is for electrically connecting / disconnecting the power supply unit 27 and the LED module 22 when the LED module 22 is replaced. It is.

  Next, a method for attaching the lighting fixture 20 to the ceiling board 19 will be described with reference to FIGS.

  First, the fixture 25 is mounted in the embedding hole 191 until the flange portion 252 of the fixture 25 comes into contact with the ceiling plate 19. In this state, the notch 254 formed on the side surface of the fixture 25 is pushed out from the inside to the outside as shown in FIG. Thereby, the ceiling board 19 is clamped by the notch part 254 and the collar part 252 of the fixture 25, and the fixture 25 can be supported by the ceiling board 19.

  Next, a lighting circuit (not shown) is configured by electrically connecting the power supply unit 27 and the LED module 22 via the connector 28 in the fixture 25.

  Next, each end of the chain 26 is hung on the bottom 251 of the fixture 25 and the recess 212 of the chassis 21. Then, the recessed portion 212 of the chassis 21 is fitted into the opposing mounting tool 25, and the mounting hole 213 is inserted into the mounting bolt 30. Further, the nut 214 is screwed into the mounting bolt 30 and the chassis 21 is supported on the ceiling plate 19.

  Thereafter, the substrate 24 to which the LED module 22 is attached is fixed to the opening 215 of the chassis 21 with screws. Then, the LED module 22 is covered with the cover 23 to complete the attachment.

  According to the embodiment of the present invention, since the chassis is fixed after the fixture is attached to the ceiling plate, it does not depend on the suspension bolt, and thus the lighting fixture can be made thin.

  Moreover, since the chassis can be fixed without depending on the suspension bolt, the width of the mounting layout of the lighting fixture is widened, and the degree of freedom in construction is improved.

  Further, the chain 26 attached to prevent the chassis 21 or the like from being dropped may be attached only to the one concave portion 212 and the fixture 25, or may be attached to the two concave portions 212 and the fixture 25.

  In the above description, a lighting apparatus using an LED as a light source has been described. However, another light source such as a fluorescent lamp may be used.

  The above embodiments are presented as examples, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

19 Ceiling panel 20 Lighting fixture 21 Chassis 211 Bottom surface 212 Recess 213 Mounting hole 214 Nut 215 Opening 22 LED module 221 Circuit board 222 LED
23 cover 24 substrate 25 fixture 251 bottom 252 flange 254 notch 27 power supply unit

Claims (1)

An LED module having LEDs mounted on a circuit board;
While the LED module is installed, a chassis formed with a recess protruding outward,
An illumination fixture comprising: a fitting that is configured to be attachable to an embedding hole formed in a ceiling plate and into which the concave portion is inserted.

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