JP2014053204A - Led lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting fixture capable of securing a waterproof property and a moisture-proof property, and suppressing the occurrence of an abnormal sound.SOLUTION: A notch dimension h1 from a fixing surface 11A side of a fixture body 11 on wall parts 43B and 42A of notch parts 44 and 45 toward a mounting surface 60 is made to be smaller than a wall part height dimension H from the fixing surface 11A side on the wall parts 43B and 42A to the mounting surface 60. Therefore, when forming seal members 18 and 19 by filling an elastic member such as resin and the like in groove parts 42 and 43, the resin and the like can be prevented from flowing out of the groove parts 42 and 43. Thereby, shortage of filling the resin and the like can be avoided, and a sealing defect can be prevented, so that a waterproof property and a moisture-proof property can be secured, and the occurrence of an abnormal sound can be suppressed as well.

Description

  The present invention relates to an LED lighting apparatus that irradiates light from an LED light emitting unit downward.

Conventionally, the lighting fixture using the LED unit which has a LED light source is known (for example, refer patent document 1).
As shown in FIGS. 7 and 8, a lighting fixture 100 described in Patent Document 1 includes a fixture main body 102 installed on a fixture mounting surface 101, a light source body 103 made of a semiconductor light emitting element, a lens body 104, a reflection A body 105 and a globe 106 are included.

The luminaire 100 is provided with an adapter 108 that is detachably installed on a hook ceiling 107 that is installed on a fixture mounting surface 101 such as a ceiling, at a substantially central portion of the fixture main body 102.
The luminaire 100 is installed by being electrically and mechanically supported by the hook ceiling 107 by engaging the adapter 108 with the hook ceiling 107 provided on the fixture mounting surface 101.

In addition, the luminaire 100 includes a lighting device 109 for lighting the light source body 103 in a space around the adapter 108.
The light source body 103 is formed in a straight line shape, and is provided on the outer edge of the opposite side of the instrument body 102.
Further, the reflector 105 has a flat plate shape in which a metal such as an iron plate is coated with white paint, and both ends face the two light source bodies 103 and the light source body 103. The reflector 105 has an inclined portion 110 that is gradually and gradually inclined from the intermediate portion toward the substantially central portion of the instrument main body 102.

In the lighting fixture 100, the light source body 103 is turned on so that the lens body 104 emits light in a substantially parallel direction, that is, toward the inclined portion 110 of the reflector 105, and is further reflected by the reflector 105 to be reflected in the globe. 106 is irradiated from the inner surface side.
Thereby, the lighting fixture 100 illuminates with substantially uniform brightness over the entire room.

Japanese Patent Laying-Open No. 2008-300203 (FIG. 1, paragraphs 0029 and 0030)

However, the conventional lighting fixture 100 described in Patent Document 1 has a problem that the waterproofness and moistureproofness of the LED light-emitting portion are not good because the light source body 103 made of a semiconductor light-emitting element is exposed.
In addition, since the LED light emitting unit repeats heat generation and cooling with blinking, the portion that receives heat from the LED light emitting unit repeats expansion and contraction.
Along with this, there is a problem that abnormal noise occurs.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an LED lighting apparatus capable of ensuring waterproofness and moisture proofness and suppressing occurrence of abnormal noise. .

  The LED lighting device of the present invention is provided on a fixture main body, a light emitting portion fixed to a fixed surface of the fixture main body, a cover covering the light emitting portion, and an attachment surface facing the fixed surface in the cover, A wall portion provided to form a pair of groove portions at a position sandwiching the light emitting portion; an elastic member housed in each of the groove portions and in close contact with the fixing surface; and the cover for fixing the cover to the fixing surface. A flange that protrudes inward and outward in the cover along the fixing surface and is provided with a fixing means; and a notch provided in the wall at a position corresponding to the flange, the notch being the wall The notch dimension from the fixed surface side to the mounting surface is smaller than the wall height dimension from the fixed surface side to the mounting surface in the wall portion.

  In the present invention, the notch dimension from the fixed surface side to the attachment surface in the wall portion of the notch portion is made smaller than the wall height dimension from the fixed surface side to the attachment surface in the wall portion. For this reason, when filling a groove part with elastic members, such as resin, and forming a sealing member, it can prevent resin etc. flowing out from a groove part. Thereby, insufficient filling of resin or the like can be avoided and sealing failure can be prevented, so that it is possible to provide an LED lighting apparatus having the effects of ensuring waterproofness and moisture resistance and suppressing the occurrence of abnormal noise.

The disassembled perspective view of the LED lighting fixture of embodiment which concerns on this invention The vertical sectional view of the LED lighting fixture of the embodiment concerning the present invention The disassembled perspective view of the LED light emission part in the LED lighting fixture of embodiment which concerns on this invention The vertical sectional view of the LED light emission part in the LED lighting fixture of embodiment which concerns on this invention The partially broken external appearance perspective view of the LED cover of the LED light emission part of the LED lighting fixture of embodiment which concerns on this invention (A) is a plan view seen from the VI direction in FIG. 5, (B) is a side view seen from the B direction in (A), and (C) is a sectional view taken along the line CC in (A). Vertical sectional view of a conventional lighting fixture Bottom view of conventional lighting equipment

Hereinafter, an LED lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1 and FIG. 2, an LED lighting apparatus 10 (hereinafter referred to as “lighting apparatus 10”) according to an embodiment of the present invention is provided in an apparatus main body 11 and a central portion of the apparatus main body 11. And an attachment portion 12 for attaching the main body 11 to the ceiling surface 90 (see FIG. 2).
In addition, the lighting fixture 10 includes a plurality of LED light emitting portions (light emitting portions) 14 provided in an annular shape in the peripheral portion 13 around the central portion of the lower surface (fixed surface) 11A of the fixture main body 11, and each LED light emitting portion 14. And a power supply unit 15 (see FIG. 2) for supplying power.
And the lighting fixture 10 is provided with the shade 16 provided in the peripheral part 13 of the fixture main body 11 so that each LED light emission part 14 might be covered.

In the lighting device 10, each LED light emitting unit 14 is fixed to the device main body 11 and covers the LED light emitting unit 14, and a plurality of the LED light emitting units 14 are interposed between the device main body 11 and the LED cover 17. The sealing member (elastic member) 18 and the sealing member (elastic member) 19 are provided.
Here, the sealing member 18 and the sealing member 19 are not formed in a ring shape in advance, but are formed by filling the inner peripheral groove portion 42 and the outer peripheral groove portion 43 of the LED cover 17 described later with resin or the like. .
Thereby, cost reduction is aimed at.

The LED cover 17 is a wide-angle lens that distributes light components at the center of the shade 16.
As shown in FIG. 3, the luminaire 10 includes a plurality of connection lines 22 that are inserted from a power supply unit 15 into a through hole 20 in the fixture body 11 and connected to a circuit board 21 in the LED light emitting unit 14.
And the lighting fixture 10 is provided with the grommet 23 fitted to the through-hole 20 while each connection line 22 is press-fit.

As shown in FIG. 1 and FIG. 2, the lighting fixture 10 is provided with a hole 24 for operating the mounting portion 12 in the central portion of the fixture body 11, and closes the hole 24. A lid member 25 that detachably covers the shade 16 side of the mounting portion 12 is provided.
The luminaire 10 includes a remote control light receiving unit 27 having a milky white light receiving element cover 26 provided with a light receiving element (not shown) that receives a remote control signal on the side of the hole 24, and a remote control transmitter (not shown). A channel setting unit 28 for setting the model is attached.

The instrument body 11 is formed in a disc shape using a thin die-cast member or the like. A plurality of cover engaging portions 29 for stopping the shade 16 from rotating are attached to the outside of the lower surface 11 </ b> A of the instrument body 11.
The lower surface 11A of the instrument body 11 functions as a reflecting surface.
As shown also in FIG. 3, the LED light emitting unit 14 includes an arc-shaped circuit board 21 separated so as to divide the circumference into four parts. By attaching each circuit board 21 to the lower surface 11 </ b> A of the instrument body 11, the LED light emitting unit 14 has a circular frame shape.
The LED light emitting unit 14 includes a plurality of LED chips 30 sealed on the inner peripheral side on the floor surface side of the circuit board 21 and a plurality of LED chips 31 sealed on the outer peripheral side on the floor surface side of the circuit board 21. .

The circuit board 21 has a printed circuit (not shown) that is electrically connected to the inner LED chip 30 and a printed circuit (not shown) that is electrically connected to the outer LED chip 31. Are independently electrically connected to the power supply unit 15 through the connection line 22.
In addition, what has characteristics, such as a different color temperature, can apply to the some LED chip 30 of an inner peripheral side, and the some LED chip 31 of an outer peripheral side, respectively.

As shown in FIG. 2, the attachment portion 12 is an attachment adapter that is mechanically and electrically connected to the hook ceiling 91 installed on the ceiling surface 90, and is electrically connected to the power supply portion 15.
The power supply unit 15 incorporates an electrical component such as an inverter for converting the commercial AC current fed from the hook ceiling 91 to the printed circuit of the circuit board 21 and converting it into a DC power supply.
The shade 16 is made of, for example, milky white resin and is fixed to the cover engaging portion 29 of the instrument body 11.

As shown in FIG. 3, the LED cover 17 is made of a resin having translucency, and is formed in a circular ring shape corresponding to the shape of the circuit board 21.
The LED cover 17 includes an inner peripheral lens portion 32 that covers a plurality of LED chips 30 on the inner peripheral side and an outer peripheral lens portion 33 that covers a plurality of LED chips 31 on the outer peripheral side.
The LED cover 17 has a concave portion 34 between the inner peripheral lens portion 32 and the outer peripheral lens portion 33.
The LED cover 17 constitutes the LED light emitting unit 14 together with the inner peripheral LED chip 30 and the outer peripheral LED chip 31.

The LED cover 17 has a plurality of flanges 35 on the outside formed in a circular ring shape, and also has a plurality of flanges 36 on the inside.
The flange portion 35 and the flange portion 36 have a through hole 35A and a through hole 36A, respectively (see FIG. 5).
The LED cover 17 is attached to the lower surface 11 </ b> A of the instrument main body 11 by screwing a screw (fixing means) (not shown) into the instrument main body 11 through the outer flange 35 and the inner flange 36.

As shown in FIG. 2, in the lighting fixture 10, the power supply portion 15 is disposed on the lower surface outside the hole portion 24 of the fixture body 11.
In the LED light emitting unit 14, the inner peripheral side LED chip 30 and the outer peripheral side LED chip 31 are arranged in a ring shape, so that light components emitted by lighting pass through the hole 24 of the instrument body 11 through the LED cover 17. Crosses the control as the center.
Accordingly, it is possible to irradiate the light component emitted from the LED light emitting unit 14 arranged in an annular shape through the LED cover 17 with a uniform light amount.
At this time, since the lid member 25 has a reflecting function, the light component emitted toward the lid member 25 is reflected, so that the shade 16 cannot be shaded.

As shown in FIG. 3, the LED light emitting unit 14 has the plurality of circuit boards 21 sandwiched between the LED cover 17 and the instrument body 11 and the LED cover 17 is attached to the instrument body 11.
Accordingly, when the inner peripheral side sealing member 18 and the outer peripheral side sealing member 19 are sandwiched between the LED cover 17 and the instrument main body 11, waterproofness and moisture resistance with respect to the circuit board 21 are obtained.

The circuit board 21 has a concave grommet fitting part 37 formed at one end and the other end, respectively, and the connection line 22 drawn out from the one end and the other end is a connection line 22 between adjacent circuit boards 21. Connected in series.
The circuit board 21 holds the grommet 23 by fitting the grommet 23 with two adjacent grommet fitting portions 37 of the plurality of circuit boards 21.

In addition, the grommet 23 is supported by the instrument main body 11 by fitting a concave groove 38 in the central portion into the through hole 20 formed in the instrument main body 11.
The grommet 23 is formed in a substantially cylindrical shape by a resin material or the like having a slight elastic repulsive force, and the connection line 22 fitted in the inner peripheral portion is electrically connected to the power supply unit 15 through the through hole 20. .
Note that the plurality of circuit boards 21 may be connected by a connector (not shown) in which the connection line 22 is provided.

As shown in FIG. 4, the LED cover 17 has an inner periphery on which the inner peripheral LED chip 30 is accommodated at a position corresponding to the inner peripheral LED chip 30 on the upper surface 60 and the emitted light of the LED chip 30 is incident. A side LED recess 40 is provided.
The LED cover 17 has an inner peripheral LED recess 41 in which the outer peripheral LED chip 31 is accommodated at a position corresponding to the outer peripheral LED chip 31 on the upper surface 60 and the emitted light of the LED chip 31 is incident.

The LED cover 17 has an inner circumferential groove (groove) 42 for accommodating the inner circumferential sealing member 18 at the inner edge (right side in FIG. 4). Further, the LED cover 17 has an outer peripheral groove 43 for accommodating the outer peripheral seal member 19 at the outer edge (on the left side in FIG. 4).
The inner circumferential groove 42 has an inner circumferential wall 42A and an outer circumferential wall 42B. Further, the outer peripheral groove 43 has an inner peripheral wall 43A and an outer peripheral wall 43B.

As shown in FIG. 5, the LED cover 17 has a flange 35 on the outside and a flange 36 on the inside.
A cutout portion 44 and a cutout portion 45 are provided at positions corresponding to the flange portion 35 and the flange portion 36 in the outer circumferential groove portion 43 and the inner circumferential groove portion 42, respectively.

FIGS. 6A to 6C show the vicinity of the outer flange 35.
A cutout portion 44 is provided in the wall portion on the flange portion 35 side in the outer peripheral groove portion 43, that is, in the outer peripheral wall portion 43 </ b> B.
The notch dimension h1 of the notch part 44 is smaller than the wall height dimension H of the outer peripheral wall part 43B.
Accordingly, the partition wall 46 having a height h2 is formed in the notch 44. Here, the height h2 = H−h1.
In FIG. 6, only the configuration in the vicinity of the outer flange 35 has been described, but the same applies to the inner flange 36.

The effect of the lighting fixture 10 of this invention is demonstrated.
As shown in FIG. 6, a notch 44 and a notch 45 are provided in the outer peripheral wall 43B of the outer peripheral groove 43 and the inner peripheral wall 42A of the inner peripheral groove 42, respectively.
Since the notch dimension h1 of the notch part 44 is smaller than the wall part height dimension H of the outer peripheral wall part 43B, a partition wall part 46 having a height h2 is formed in the notch part 44.
Moreover, since the notch dimension h1 of the notch part 45 is smaller than the wall part height dimension H of the inner peripheral wall part 42A, a partition wall part 47 having a height h2 is formed in the notch part 45.

Therefore, when the sealing member 18 and the sealing member 19 are formed by filling the inner circumferential groove portion 42 and the outer circumferential groove portion 43 with an elastic member such as a resin, the resin or the like is removed from the inner circumferential groove portion 42 and the outer circumferential groove portion 43. It can be prevented from flowing out.
As a result, insufficient filling of resin or the like can be avoided, and when the LED cover 17 is attached to the lower surface 11A of the instrument body 11, sealing failure can be prevented, so that waterproof and moisture-proof properties are ensured and abnormal noise is generated. Can be suppressed.

6C, when the screw (fixing means) is screwed into the instrument main body 11 through the through hole 35A of the flange 35, the seal member 19 is deformed and fixed. The At this time, unlike the present embodiment, in the case where the wall portion is present in the portion of the notch portion 44 (hereinafter referred to as a comparative example), this wall portion is another portion (screw screwed) with respect to the instrument body 11. It will be pressed more strongly than the part other than the periphery of the collar part 35). In addition, the tip of the collar portion 35 may be bent and come into contact with the instrument body 11.
In this comparative example, in this state, when the LED light emitting unit 14 is turned on and generates heat, the LED cover 17 is thermally expanded and deformed.
Since the LED cover 17 made of resin and the metal instrument main body 11 have different expansion coefficients, the tip or wall of the collar 35 that is in contact with the instrument main body 11 is the instrument as the LED cover 17 is thermally expanded. An abnormal noise (squeak noise) is generated when the main body 11 slides continuously or stepwise.
Next, when the LED light emitting unit 14 is turned off, in the process of cooling the heat, the flange 35 and the wall are thermally contracted so as to return to the initial shape. An abnormal noise is generated when sliding contact is made continuously or stepwise. This phenomenon is the same for the flange 36 side.

  The phenomenon as described above becomes conspicuous in the flange portion 35 and the flange portion 36 where stress is concentrated by being fixed to the instrument main body 11 by screws (fixing means) and their peripheral portions. On the other hand, in this embodiment, since the notch 44 and the notch 45 are provided in the inner peripheral wall 42A and the outer peripheral wall 42B, respectively, unlike the comparative example, the flange 35, the flange 36, and their peripheral portions. The stress at is dispersed, and the generation of abnormal noise (squeak noise) can be greatly relieved.

Also, generally, lighting fixtures for home use, such as the ceiling type that is attached to the ceiling, are preferred to have a round shape, and in order to obtain uniform light distribution characteristics from the lighting fixture, It is desirable to arrange the LEDs in a circle along the planar shape of the main body.
And since the LED light emission part 14 and the LED cover 17 are substantially circular, the lighting fixture 10 of this embodiment can satisfy | fill the preference and light distribution characteristic which were mentioned above.

The lighting fixture 10 of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.
For example, in the above-described embodiment, the case where a screw is used as a fixing means for attaching the LED cover 17 to the instrument body 11 is illustrated, but the present invention is also applicable to rivets, heat caulking, fitting, and the like.
Further, in the present embodiment, the form in which the inner peripheral side groove part and the outer peripheral side groove part are filled with resin or the like to form the elastic member is exemplified, but the present invention includes a form in which a so-called O-ring is adopted as the elastic member.

10 Lighting equipment (LED lighting equipment)
11 Instrument body 11A Bottom surface (fixed surface)
14 LED light emitting part (light emitting part)
17 LED cover (cover)
18, 19 Seal member (elastic member)
35, 36 collar 42 inner circumferential groove (groove)
42A Inner wall (wall)
42B Outer peripheral wall (wall)
43 Outer peripheral side groove (groove)
43A Inner wall (wall)
43B Outer peripheral wall (wall)
44, 45 Notch 60 Upper surface (mounting surface)
H Wall height h1 Notch dimension

Claims (1)

An instrument body;
A light emitting part fixed to a fixed surface of the instrument body;
A cover that covers the light emitting unit;
A wall portion provided on a mounting surface facing the fixed surface of the cover and provided to form a pair of groove portions at a position sandwiching the light emitting portion;
An elastic member housed in each of the grooves and in close contact with the fixed surface;
In order to fix the cover to the fixing surface, a collar portion that protrudes inward and outward along the fixing surface and is provided with fixing means;
A notch provided in the wall at a position corresponding to the flange,
The notch part is an LED lighting device in which a notch dimension of the wall part from the fixed surface side to the attachment surface is smaller than a wall part height dimension from the fixed surface side to the attachment surface in the wall part.

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