JP2016076466A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture which reduces the number of components, which facilitates assembly and which can suppress a fixture diameter small.SOLUTION: A lighting fixture 10 includes a circuit board 16 supported by a fixture body 14. On a surface 16B of the circuit board 16, a power supply region 17 is provided in a region near with respect to a fixture mounting part 14A of the fixture body 14, and a light emitting region 18 is provided in a region far with respect to the fixture mounting part 14A of the fixture body 14. The power supply region 17 is covered by a power supply region cover 19, and the light emitting region 18 is covered by a translucent cover 23. Furthermore, a power supply region cover flange part of the power supply region cover 19 and a translucent cover flange part of the translucent cover 23 are overlapped with each other.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a lighting fixture in which a fixture main body is attached to a construction material, and a large number of electronic components and a large number of LED chips are provided on the fixture main body.

Some lighting fixtures have a light-emitting board attached to the fixture body, the light-emitting board is covered with a transmissive cover, a power supply board is disposed inside the cover, and the power supply board and the light-emitting board are connected by a harness. It has been.
A large number of LED (Light-emitting Diode) chips as a light emitting unit are mounted on the light emitting substrate, and a large number of electronic components as a power source unit are mounted on the power supply substrate. Many electronic components and power supply boards are covered with a metal cover to ensure nonflammability (Patent Document 1).

JP 2012-146666 A

However, the luminaire of Patent Document 1 requires two substrates, a power supply substrate and a light emitting substrate, for mounting each electronic component and each LED chip, and a harness for connecting the power supply substrate and the light emitting substrate. Need. For this reason, the number of parts is increased, and in addition, a harness connecting step is required, so that assembly is complicated.
Furthermore, since many electronic components and the power supply board are covered with a metal cover, it is necessary to prevent the metal cover from contacting the metal cover by separating the metal cover radially outward from the circuit pattern of the power supply board. Will become bigger.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus that can reduce the number of parts, facilitate assembly, and reduce the diameter of the apparatus. is there.

  The lighting fixture of the present invention is a circuit board that is formed in a planar shape that bypasses a fixture main body supported by a construction material and a fixture mounting portion provided at a central portion of the fixture main body, and is supported by the fixture main body. And the circuit board has a power supply area in which a large number of electronic components as power supply parts are mounted in a region close to the instrument mounting portion on the surface of the circuit board opposite to the instrument body, On the surface of the circuit board, a large number of LED chips as light emitting parts are mounted in an area far from the fixture mounting part, and the power supply part covers the light emitting area where each LED chip emits light and the power supply area. A power supply area cover; and a translucent cover that covers the light emitting area. The power supply area cover includes a power supply area cover flange provided on the translucent cover side, and the translucent cover. Chromatography has translucent cover flange portion provided in the power supply area cover side, the power source areas cover the flange portion and the translucent cover flange portion overlap each other.

  According to the lighting fixture of the present invention, it is possible to provide a lighting fixture that can reduce the number of parts, facilitate assembly, and can keep the diameter of the fixture small.

The disassembled perspective view which shows the state which looked at the lighting fixture which concerns on this invention from the downward direction The disassembled perspective view which shows the state which looked at the lighting fixture of FIG. 1 from upper direction Sectional drawing which shows the state which assembled | attached the lighting fixture of FIG. Part I enlarged view of FIG.

Hereinafter, the lighting fixture according to the embodiment will be described with reference to the drawings.
(Embodiment)
As shown in FIGS. 1 and 2, the lighting apparatus 10 includes an apparatus main body 14 attached to a ceiling 11 as a construction material, and an apparatus main body 14 so as to bypass the apparatus attachment portion 14 </ b> A provided at the center of the apparatus main body 14. 14 and a circuit board 16 supported by 14.
A ceiling side attachment member 12 is attached to the ceiling 11. The lighting fixture side mounting member 15 is attached and housed inside the fixture mounting portion 14A. The lighting fixture 10 is fixed to the ceiling 11 by attaching the lighting fixture-side mounting member 15 to the ceiling-side mounting member 12.
In the state where the instrument main body 14 is attached to the ceiling 11, no wobbling or the like occurs due to the cushion 13 (see also FIGS. 3 and 4) interposed between the ceiling 11 and the instrument main body 14.

Further, the lighting fixture 10 includes a power source area cover 19 that covers the power source area 17 of the circuit board 16, a translucent cover 23 that is attached so as to cover the light emitting area 18 of the circuit board 16, and a globe that is attached to the equipment body 14. 25.
The globe 25 is a milky white translucent member, and is detachably attached to the globe attachment member 26 of the instrument main body 14 from below with engagement protrusions 25A (three of the six are used). In this state, the instrument body 14, the circuit board 16, the power supply area cover 19 and the translucent cover 23 are covered with the globe 25.

The instrument main body 14 is formed in a disk shape in plan view, and a contact surface 21 that bulges toward the circuit board 16 around the lighting fixture side mounting member 15 provided in the instrument mounting portion 14A (see also FIG. 1). Is formed in a ring shape.
In addition, although embodiment demonstrates the example which attaches the disk-shaped instrument main body 14 directly to the ceiling 11 as a construction material in planar view, it does not limit to this and uses a square-shaped instrument main body in planar view. In this case, the engaging member is engaged with the ceiling-side mounting member 12, and the instrument main body 14 is suspended from the ceiling 11 by an electric wire via the engaging member, or the instrument main body 14 is removed from the ceiling 11 using a chain or a wire. It can also be applied when hanging.

The ceiling side mounting member 12 is connected to an electric wire on the back side of the ceiling 11. The lighting fixture side attachment member 15 has a connector-attached wiring (not shown) drawn out below the fixture body 14.
Therefore, by connecting the lighting fixture side mounting member 15 to the ceiling side mounting member 12, and connecting the wiring connector of the lighting fixture side mounting member 15 to the connector 28 (see FIG. 3) provided on the circuit board 16, On the back side of the ceiling 11, the electric wire and the circuit board 16 are electrically connected.
In addition, the ceiling side attachment member 12 and the lighting fixture side attachment member 15 are abbreviate | omitted in FIG. 3, FIG.
The circuit board 16 is formed in a planar shape that bypasses the lighting fixture side mounting member 15, and the circuit board 16 is in contact with the contact surface 21 of the fixture body 14 from below.

As shown in FIG. 1, the circuit board 16 has a hollow portion 29 corresponding to the instrument mounting portion 14 </ b> A of the instrument body 14 and is formed in a substantially donut shape. The circuit board 16 has a back surface 16A on the side of the instrument body 14 and a surface 16B on the side opposite to the instrument body 14.
A power source region 17 and a light emitting region 18 are provided on the surface 16B. The back surface 16 </ b> A is a light emitting region back surface 16 </ b> C corresponding to the light emitting region 18.

On the surface 16 </ b> B of the circuit board 16, a power source region 17 is provided on the instrument mounting portion 14 </ b> A side, and a light emitting region 18 is provided outside the power source region 17. The power source region 17 is formed in a ring shape in a region near the device mounting portion 14A of the device main body 14, and the light emitting region 18 is formed in a ring shape in a region far from the device mounting portion 14A of the device main body 14.
Therefore, since the power source region 17 and the light emitting region 18 can be connected by a circuit pattern, it is not necessary to connect the power source region 17 and the light emitting region 18 with a harness as in the prior art, and the number of components can be reduced.

The power source area 17 is formed on the instrument mounting portion 14A side of the instrument main body 14, and the light emitting area 18 is formed away from the instrument mounting portion 14A of the instrument main body 14, so that the power source area 17 and the light emitting area 18 are in the vertical direction. Arranged so as not to overlap.
A large number of electronic components 34 (including the connector 28) as the power supply unit 33 are mounted in the power supply region 17. By mounting each electronic component 34 on the power supply region 17, the lead protrusion 35 of each electronic component 34 protrudes toward the back surface 16 </ b> A side of the circuit board 16.

  In addition, a large number of LED chips 37 serving as the light emitting unit 36 are mounted in the light emitting region 18. A power supply unit 33 is connected to each LED chip 37 with a circuit pattern 38, and each LED chip 37 emits light by power supplied from the power supply unit 33.

Thus, the power supply unit 33 and the light emitting unit 36 are mounted on the single circuit board 16 so as not to overlap each other. Therefore, the two circuit boards for the power supply unit 33 and the light emitting unit 36 that have been conventionally required can be combined into a single circuit board 16.
As a result, the number of parts can be reduced, and connection work between the power supply unit 33 and the light emitting unit 36 is not required, and assembly is facilitated.

As shown in FIG. 4, the contact surface 21 of the instrument main body 14 is in contact with the light emitting area back surface 16 </ b> C of the back surface 16 </ b> A of the circuit board 16. Therefore, the contact surface 21 is in contact with a portion corresponding to the circuit pattern of the light emitting unit 36 connecting the LED chips 37 in the light emitting region back surface 16C.
Thereby, the heat of the circuit board 16 can be efficiently radiated to the contact surface 21.

  Furthermore, the light emitting region 18 of the circuit board 16 is covered with a resin-made translucent cover 23 having insulation properties. The translucent cover 23 includes a translucent cover outer collar 51 and a translucent cover inner collar (translucent cover collar) 52 that are in contact with the surface 16B of the circuit board 16, and a translucent cover outer collar. 51 and the dome part 53 supported by the translucent cover inner collar part 52, and the upright part 54 provided in the inner periphery 52A of the translucent cover inner collar part 52.

The dome portion 53 is supported by the translucent cover outer collar portion 51 and the translucent cover inner collar portion 52 and is formed in a dome shape so as to cover each LED chip 37 in a non-contact manner.
The translucent cover inner collar portion 52 projects from the inner peripheral edge 53A of the dome portion 53 toward the power source region 17 (that is, the power source region cover 19) and is in contact with the surface 16B of the circuit board 16.
The upright portion 54 protrudes from the inner peripheral edge 52 </ b> A of the translucent cover inner collar portion 52 toward the side opposite to the circuit board 16.

Further, the power supply region 17 of the circuit board 16 is covered from below with a metal power supply region cover 19 to ensure nonflammability.
The power supply area cover 19 has a power supply area cover flange 43 projecting radially outward from the upper opening of the power supply area cover 19 and extends downward from the inner periphery of the power supply area cover flange 43 to form a side wall. And a cover bottom 45 that closes the lower end of the inclined surface 44.

The power supply area cover collar 43 is formed in an annular shape in plan view. The inclined surface 44 extends along the upright portion 54 so as to be in contact with the upright portion 54.
A collar 47 is disposed between the cover bottom 45 and the instrument body 14. The collar 47 is disposed outside the instrument mounting portion 14A of the instrument body 14 and is formed in a cylindrical shape.

The power region cover collar 43 is provided on the side of the translucent cover inner collar 52 of the translucent cover 23 by projecting radially outward from the upper opening of the power region cover 19.
The translucent cover inner collar portion 52 is in contact with the surface 16B of the circuit board 16, and the power supply region cover collar portion 43 is superimposed on the translucent cover inner collar portion 52 from below.
That is, the insulating translucent cover inner flange 52 is sandwiched between the surface 16 </ b> B and the power supply region cover flange 43.

  Therefore, the power supply area cover collar 43 is kept in an insulated state with respect to the circuit pattern on the surface 16B. Thus, unlike the prior art, in order to separate the power supply area cover flange 43 from the circuit pattern on the surface 16B, it is not necessary to separate the power supply area cover flange 43 in the radial direction with respect to the circuit pattern on the surface 16B. The diameter can be kept small.

Further, the raised portion 54 protrudes from the inner cover portion 52 of the translucent cover toward the side opposite to the circuit board 16 and is provided so as to be in contact with the inclined surface 44 of the power region cover cover portion 43.
Therefore, when the power supply area cover 19 is attached, the inclined area 44 of the power supply area cover 19 is brought into contact with the upright portion 54 so that the power supply area cover 19 can be positioned by the upright portion 54 and the assembly of the power supply area cover 19 becomes easy. .

  As described above, the lighting fixture 10 of the embodiment is formed in a planar shape that bypasses the fixture main body 14 supported by the ceiling 11 as a construction material and the fixture mounting portion 14A of the fixture main body 14, and the fixture main body. 14 and a circuit board 16 supported by 14.

  The circuit board 16 is a power supply region in which a large number of electronic components 34 as the power supply unit 33 are mounted on a surface 16B of the circuit board 16 on the opposite side of the device main body 14 in a region close to the device mounting portion 14A of the device main body 14. 17 and a surface 16B of the circuit board 16, a large number of LED chips 37 are mounted as light emitting portions 36 in a region far from the device mounting portion 14 </ b> A of the device main body 14, and each LED chip 37 emits light by the power supply portion 33. A light emitting region 18, a power source region cover 19 that covers the power source region 17, and a translucent cover 23 that covers the light emitting region 18 are provided.

  Furthermore, the power supply area cover 19 has a power supply area cover collar portion 43 provided on the translucent cover 23 side, and the translucent cover 23 is provided inside the translucent cover provided on the power supply area cover 19 side. The power supply region cover flange 43 and the translucent cover inner flange 52 overlap each other.

Preferably, in the luminaire 10, the translucent cover inner flange 52 is sandwiched between the surface 16 </ b> B of the circuit board 16 and the power supply region cover flange 43.
Further, preferably, in the lighting fixture 10, the translucent cover inner flange portion 52 has an upright portion 54 that protrudes on the opposite side to the circuit board 16.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A change, improvement, etc. are possible suitably.
For example, the lighting fixture, construction material, fixture body, circuit board, power source region, light emitting region, power source region cover, translucent cover, electric wire, power source unit, electronic component, light emitting unit, LED chip, power source used in the above embodiment The shapes and configurations of the area cover collar, the translucent cover inner collar, the upright portion, and the like are not limited to those illustrated, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Construction material 14 Appliance main body 14A Appliance mounting part 16 Circuit board 16B Circuit board surface 17 Power supply area 18 Light emitting area 19 Power supply area cover 23 Translucent cover 27 Electric wire 33 Power supply part 34 Electronic component 36 Light emitting part 37 LED chip 43 Power supply area cover collar 52 Translucent cover inner collar (translucent cover collar)
54 Upright

Claims (3)

An instrument body supported by construction materials;
A circuit board that is formed in a planar shape that bypasses the instrument mounting portion provided in the center of the instrument body, and is supported by the instrument body,
The circuit board is
On the surface of the circuit board opposite to the instrument main body, a power supply region in which a large number of electronic components as power supplies are mounted in a region close to the instrument mounting portion,
On the surface of the circuit board, a large number of LED chips as light emitting parts are mounted in an area far from the fixture mounting part, and a light emitting area in which each LED chip emits light by the power supply part;
A power supply area cover covering the power supply area;
A translucent cover covering the light emitting region,
The power area cover has a power area cover collar provided on the translucent cover side,
The translucent cover has a translucent cover collar provided on the power supply area cover side,
The said power supply area | region cover collar part and the said translucent cover collar part are the lighting fixtures which mutually overlap. The lighting fixture according to claim 1,
The translucent cover collar is a lighting fixture sandwiched between the surface of the circuit board and the power supply area cover collar. The lighting fixture according to claim 2,
The translucent cover collar is a lighting fixture having a raised portion that protrudes on the opposite side of the circuit board.

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