JP2012252787A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture compatible with high power of an LED unit, and capable of improving assembly workability.SOLUTION: The lighting fixture 10 includes a fixture body 11, an LED unit 18 which is installed at the bottom of the fixture body 11, an optical member 25 which is installed on the fixture body 11 by a screw 36 in the front of the LED unit 18, and a frame 12 which is installed on the fixture body 11 covering the optical member 25. The frame 12 includes a recessed part 40 for positioning the frame 12 to the fixture body 11 by inserting a head 38 of the screw 36.

Description

  The present invention relates to a lighting apparatus applied to a downlight or the like that is installed by being embedded in an embedding hole of a ceiling material.

2. Description of the Related Art Conventionally, there has been known a lighting fixture including a fixture body that houses a light source block having LEDs, a lighting device, a mounting plate to which the light source block and the lighting device are attached, and a terminal block (for example, Patent Document 1). reference).
Patent document 1 provided the attachment part which has the heat dissipation in which a mounting plate is detachably attached from the one surface side to the instrument main body.

JP 2006-172895 A (FIG. 1, claim 1)

Patent document 1 can improve heat dissipation by an attaching part.
By the way, similarly to patent document 1, the lighting fixture which attached the LED unit to the fixture main body, attached the optical member to the front surface of the LED unit, and attached the frame to the front surface of the optical member is proposed.
Such a conventional lighting fixture is used as a guide at the time of assembly by combining an oval-shaped instrument body side tube portion formed on the fixture body and an oval frame body side tube portion formed on the frame body. .
However, in such a conventional lighting fixture, the outer shape of the LED unit housed in the fixture main body is limited to the oval-shaped fixture main body side cylinder portion of the fixture main body.
Therefore, such a conventional lighting fixture cannot accommodate a high-power LED unit having a large outer shape.
Therefore, such a conventional lighting fixture cannot increase the output of the LED unit.
In addition, such a conventional lighting fixture has to be combined with an oval-shaped fixture body side cylinder portion of the fixture body and an oval-shaped frame body side cylinder portion of the frame body at the time of assembly. Is only in one direction.
Therefore, since such a conventional lighting fixture cannot be assembled unless both are combined in a single direction at the time of assembly, the assembly directionality is poor and the assembly workability is not good.

  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 cope with a higher output of an LED unit and can improve assembly workability.

  The lighting fixture according to the present invention includes a fixture main body, an LED unit attached to the bottom surface of the fixture main body, an optical member attached to the fixture main body with a screw on the front surface of the LED unit, and covering the optical member with the fixture. A frame attached to the main body, and the frame includes a recess for positioning on the instrument main body by inserting a head of the screw.

  In the lighting fixture according to the present invention, the concave portion of the frame is formed rotationally symmetrically with respect to the screw on the fixture main body side.

  As for the lighting fixture which concerns on this invention, the said recessed part of the said frame is arrange | positioned on the outer side of the outer peripheral surface of the said frame, and a wall board is formed in the outermost periphery part.

  According to the lighting fixture of the present invention, it is possible to cope with high output of the LED unit and to improve the assembly workability.

The external appearance perspective view seen from diagonally downward of the lighting fixture of 1st Embodiment which concerns on this invention The partially broken side view of the lighting fixture of 1st Embodiment which concerns on this invention The disassembled perspective view of the lighting fixture and reflector of 1st Embodiment which concern on this invention The external appearance perspective view seen from diagonally downward of the fixture main body of the lighting fixture of 1st Embodiment which concerns on this invention, and diagonally upward of a frame. The vertical sectional view of the lighting fixture of a 1st embodiment concerning the present invention. Vertical section of the luminaire when not preferred The exploded perspective view of the lighting fixture and lens of 2nd Embodiment which concern on this invention

Hereinafter, the lighting fixture of several embodiment which concerns on this invention is demonstrated with reference to drawings.
(First embodiment)
As shown in FIG. 1, the lighting fixture 10 of 1st Embodiment which concerns on this invention is provided with the instrument main body 11 and the frame 12 attached below the instrument main body 11, and is the ceiling material (refer FIG. 5). It is embedded in a buried hole (see FIG. 5) 2 and applied to a downlight or the like.
The instrument main body 11 is made of a metal such as aluminum die cast, for example, has a cylindrical portion 13 formed in a substantially cylindrical shape, and has a plurality of radiating fins 14 on the upper portion of the cylindrical portion 13.
The frame body 12 has a cylindrical portion 15 formed of, for example, a hard resin material, a flange-shaped decorative plate 16 at the lower end portion of the cylindrical portion 15, and a plurality of mounting springs 17 on the side portion of the cylindrical portion 15. Is attached.

The lighting fixture 10 has an LED unit 18 attached to the bottom of the fixture body 11.
In the LED unit 18, a plurality of LED chips 19 are sealed with an LED substrate 20, and a printed circuit (not shown) included in the LED substrate 20 is electrically connected to the power supply unit 22 through the instrument wiring 21.
The power supply unit 22 is attached to a power supply case 23, and the power supply case 23 is screwed to the upper part of the instrument main body 11. The power supply unit 22 includes a power supply terminal block 24.

As shown in FIG. 2, in the lighting fixture 10, a reflector 25 that is an optical member is attached immediately below the LED unit 18.
The reflecting plate 25 has a plurality of reflecting surfaces 26 having a substantially hemispherical shape and having a top portion opened in accordance with the position of each LED chip 19 of the LED unit 18.
The reflection plate 25 has an outer frame 27 on the outer periphery, and a milky white or transparent resin panel 28 is accommodated inside the outer frame 27.
The reflecting plate 25 is fixed to the instrument body 11 via an endless and annular packing 29 and an annular pressing plate 30.
The frame body 12 has an auxiliary reflecting plate 31 having a substantially hemispherical shape and an open top at the inner peripheral surface.

As shown in FIG. 3, the instrument main body 11 has a plurality of convex portion accommodating portions 32 formed in a semi-cylindrical shape at equally spaced positions on the circumference of the outer peripheral portion of the cylindrical portion 13.
The reflecting plate 25 has a plurality of convex portions 33 corresponding to the convex portion accommodating portions 32 of the instrument main body 11 at equally spaced positions on the circumference of the outer peripheral portion of the outer frame 27. The convex portion 33 has a screw hole 34.
The reflection plate 25 is incorporated inside the tubular portion 13 of the instrument body 11 such that the projection 33 is accommodated in the projection accommodating part 32 of the instrument body 11.

Next, the packing 29 and the pressing plate 30 are disposed on the front surface of the reflecting plate 25, and a plurality of screws 36 are provided from the screw holes 35 provided on the outer peripheral portion of the pressing plate 30 to the screw holes 34 of the convex portion 33 of the reflecting plate 25. It is inserted.
Then, in a state where the convex portion 33 of the reflecting plate 25 is accommodated in the convex portion accommodating portion 32 of the instrument main body 11, the screw 36 is screwed into the screw hole 37 provided in the convex portion accommodating portion 32 in the cylindrical portion 13 of the instrument main body 11. It is.

As shown in FIG. 4, the screw 36 screwed into the screw hole 37 provided in the convex portion accommodating portion 32 in the cylindrical portion 13 of the instrument main body 11 is formed on the bottom surface of the cylindrical portion 13 of the instrument main body 11. At the position of the accommodating portion 32, the head portion 38 protrudes downward.
The frame 12 has an outer peripheral wall plate 39 on the outer peripheral portion of the cylindrical portion 15, and a plurality of head receiving recesses 40 formed in a semi-cylindrical shape at equal intervals in the circumferential direction of the outer peripheral wall plate 39. Have

Since the head receiving recess 40 has an inner diameter that is slightly larger than the outer diameter of the head 38 of the screw 36, the head receiving recess 40 has a function of receiving the head 38 of the screw 36 and positioning it relative to the instrument body 11. .
At this time, the head accommodating recess 40 of the frame 12 is formed rotationally symmetrically with respect to the screw 36 on the instrument body side.
Therefore, when the frame body 12 is positioned on the instrument body 11, since the direction in which the instrument body 11 and the frame body 12 coincide is a plurality of directions, the assembly workability can be improved.

Next, a procedure for assembling the fixture body 11 and the frame 12 in the lighting fixture 10 will be described.
First, the reflecting plate 25 is incorporated inside the tube portion 13 of the instrument body 11 such that the projection 33 is accommodated in the projection accommodating part 32 of the instrument body 11.
Next, the packing 29 and the pressing plate 30 are combined with the reflecting plate 25, and a plurality of screws 36 are inserted from the screw holes 35 of the pressing plate 30 into the screw holes 34 of the convex portion 33 of the reflecting plate 25.
Then, in a state where the convex portion 33 of the reflecting plate 25 is accommodated in the convex portion accommodating portion 32 of the instrument main body 11, the screw 36 is screwed into the screw hole 37 of the convex portion accommodating portion 32 in the cylindrical portion 13 of the instrument main body 11. .

Next, the frame body 12 is combined with the sub-assembly of the instrument body 11 and the reflector 25 assembled in this way.
At this time, the head portion 38 of the screw 36 protruding downward on the bottom surface of the cylindrical portion 13 of the instrument main body 11 is accommodated in the head accommodating recess 40 of the frame body 12.
Therefore, the frame body 12 is positioned with respect to the instrument body 11 by accommodating the head portion 38 of the screw 36 of the instrument body 11 in the head accommodation recess 40 of the frame body 12.
Subsequently, after the frame body 12 is positioned with respect to the instrument body 11, screws (not shown) are screwed into the instrument body 11 from the frame body 12 side, whereby the frame body 12 is fixed to the instrument body 11.

As shown in FIG. 5, the frame 12 has a head housing recess 40 for positioning with the instrument body 11 on the outer peripheral wall plate 39 on the outer peripheral portion of the cylindrical portion 15.
Therefore, in the instrument body 11, the LED unit 18 including the reflector 25 can be enlarged, and the optical loss can be reduced to improve the optical performance.
Further, since the frame body 12 has the outer peripheral wall plate 39 on the outer peripheral portion of the cylindrical portion 15, light leakage from between the embedding hole 2 of the ceiling material 1 and the decorative plate 16 in the cylindrical portion 15 of the frame body 12. Can be prevented.
On the other hand, as shown in FIG. 6, in the case of the lighting fixture 70 which does not have an outer peripheral wall board in the outer peripheral part of the frame 71, the light from between the embedding hole 2 of the ceiling material 1 and the frame 71 is shown. Since the leakage α is likely to occur, the optical performance is hindered.

As described above, according to the lighting fixture 10 of the first embodiment according to the present invention described above, when the frame 12 is assembled to the fixture main body 11, the screw 36 of the fixture main body 11 is inserted into the head housing recess 40 of the frame 12. A head 38 is received.
Therefore, according to the lighting fixture 10 of 1st Embodiment, since the frame 12 can be easily positioned with respect to the fixture main body 11, assembly workability | operativity can be improved.

  Moreover, according to the lighting fixture 10 of 1st Embodiment, when positioning the frame 12 to the instrument main body 11, since the direction which the instrument main body 11 and the frame 12 correspond is a several direction, assembly workability | operativity is good. Can be improved.

And according to the lighting fixture 10 of 1st Embodiment, the frame 12 has the head accommodating recessed part 40 for positioning with the instrument main body 11 in the outer peripheral wall board 39 of the outer peripheral part of the cylinder part 15. As shown in FIG.
Therefore, according to the lighting fixture 10 of 1st Embodiment, the LED unit 18 can be enlarged including the reflecting plate 25, and it can respond to the high output of the LED unit 18. FIG.

(Second Embodiment)
Next, the lighting fixture of 2nd Embodiment which concerns on this invention is demonstrated.
Note that, in the following second embodiment, components that are the same as those in the first embodiment described above or components that are functionally similar are denoted by the same or corresponding reference numerals in the drawings, or the description is simplified. Omitted.

As shown in FIG. 7, in the lighting fixture 50 according to the second embodiment of the present invention, a lens 51 that is an optical member is attached immediately below the LED unit 18.
The lens 51 has a plurality of light guide portions 52 having a substantially hemispherical shape and having a top portion opened in accordance with the position of each LED chip 19 of the LED unit 18.
The lens 51 has a plurality of convex portions 53 corresponding to the convex portion accommodating portions 32 of the instrument main body 11 at equally spaced positions on the outer peripheral portion. The convex portion 53 has a screw hole 54.

  According to the lighting apparatus 50 of the second embodiment, when attaching the lens 51 to the apparatus main body 11, it is not necessary to use a packing, a pressing plate, or the like, so that the number of parts can be reduced and assembly workability can be further improved.

  In addition, in the lighting fixture of this invention, an instrument main body, an attachment spring, an LED unit, a power supply unit, etc. are not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

DESCRIPTION OF SYMBOLS 10,50 Lighting fixture 11 Appliance main body 12 Frame 18 LED unit 25 Reflector (optical member)
36 screw 38 head 39 outer peripheral wall plate (wall plate)
40 Head receiving recess (recess)
51 Lens (optical member)

Claims (3)

An instrument body;
An LED unit attached to the bottom surface of the instrument body;
An optical member that is attached to the instrument body by a screw on the front surface of the LED unit;
A frame that covers the optical member and is attached to the instrument body;
The said frame is a lighting fixture provided with the recessed part for positioning to the said instrument main body by inserting the head of the said screw. The lighting fixture according to claim 1,
The lighting fixture in which the concave portion of the frame is formed rotationally symmetrically with respect to the screw on the fixture main body side. The lighting fixture according to claim 1 or 2,
The said recessed part of the said frame is arrange | positioned on the outer side of the outer peripheral surface of the said frame, and is a lighting fixture by which a wall board is formed in the outermost periphery part.

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