JP2013055015A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of preventing deterioration of electric components and maintaining an initial performance for a long period.SOLUTION: The lighting fixture 10 is provided with a fixture body 11, a fitting part 12 which is arranged at a central part of the fixture body 11 and fixes the fixture body 11 to a ceiling face, a plurality of LED light-emitting portions 14 arranged in a ring shape at a peripheral part 13 around the central part of the fixture body 11, a power source portion 15 which is arranged at the central part of the fixture body 11 and supplies power to each of the LED light-emitting portions 14, and a cover 16 attached at the peripheral part 13 of the fixture body 11 for covering each of the LED light-emitting portions 14. Each of the LED light-emitting portions 14 includes an LED cover 17 which is fixed to the fixture body 11 and covers each of the LED light-emitting portions 14 and sealing members 18, 19 arranged interposed between the fixture body 11 and the LED cover 17.

Description

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

Conventionally, a lighting fixture using an LED unit having an LED light source is known (see, for example, Patent Document 1).
As shown in FIGS. 12 and 13, 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 is not good in waterproofness and moistureproofness with respect to the LED light emitting part because the light source body 103 made of a semiconductor light emitting element is exposed.
Therefore, the conventional lighting device 100 described in Patent Document 1 cannot prevent deterioration of electrical components.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting fixture that can prevent deterioration of electrical components and maintain initial performance for a long period of time.

  The lighting fixture according to the present invention is provided in a fixture main body, a central portion of the fixture main body, an attachment portion for attaching the fixture main body to a ceiling surface, and an annular portion around the central portion of the fixture main body. A plurality of LED light emitting units provided in the device main body, a power supply unit provided inside the device main body for supplying power to the LED light emitting units, and the periphery of the device main body so as to cover the LED light emitting units Each of the LED light emitting portions is fixed to the device main body and covers the LED light emitting portion, and is interposed between the device main body and the LED cover. And a sealing member.

  The lighting fixture which concerns on this invention is provided with the board | substrate recessed part corresponding to the thickness dimension of the circuit board of the said LED light emission part in the surface which faces the said fixture main body in the said LED cover.

  In the lighting fixture according to the present invention, a seal member recess corresponding to the seal member is provided on a surface of the LED cover facing the fixture body, and the seal member recess includes the central portion and the peripheral portion of the fixture body. A holding convex portion protruding from one side to the other side is provided.

  According to the lighting fixture according to the present invention, it is possible to prevent deterioration of the electrical components and to maintain the initial performance for a long period of time.

The disassembled perspective view of the lighting fixture of one Embodiment which concerns on this invention The vertical sectional view of the lighting fixture of one embodiment concerning the present invention The disassembled perspective view of the LED light emission part of the lighting fixture of one Embodiment which concerns on this invention. The vertical sectional view of the LED light emission part of the lighting fixture of one Embodiment concerning this invention The partially broken external appearance perspective view of the LED cover of the LED light emission part of the lighting fixture of one Embodiment which concerns on this invention FIG. 5 is a partially broken external perspective view after the seal member of the LED cover shown in FIG. The external appearance perspective view around the press protrusion of the LED cover of the lighting fixture of one Embodiment which concerns on this invention The vertical sectional view before the attachment of the grommet to the pressing protrusion of the LED cover of the lighting fixture of one embodiment according to the present invention The vertical sectional view after attachment of a grommet to a pressing projection of a LED cover of a lighting fixture of one embodiment concerning the present invention The external appearance perspective view of the modification of the press protrusion of the LED cover of the lighting fixture of one Embodiment which concerns on this invention The vertical sectional view after attachment of a grommet to a press projection of a modification of an LED cover of a lighting fixture of one embodiment concerning the present invention Vertical sectional view of a conventional lighting fixture Bottom view of conventional lighting equipment

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a lighting fixture 10 according to an embodiment of the present invention is provided in a fixture body 11 and a central portion of the fixture body 11 to attach the fixture body 11 to a ceiling surface (see FIG. 2) 90. The attachment part 12 is provided.
In addition, the luminaire 10 includes a plurality of LED light emitting units 14 provided in a ring shape in the peripheral portion 13 around the central portion of the fixture body 11, and a power supply unit that supplies power to each LED light emitting unit 14 (see FIG. 2). 15.
And the lighting fixture 10 is provided with the cover 16 provided in the peripheral part 13 of the fixture main body 11 so that each LED light emission part 14 may be covered.

The lighting fixture 10 includes an LED cover 17 in which each LED light emitting portion 14 is fixed to the fixture main body 11 and covers each LED light emitting portion 14, and a plurality of sealing members interposed between the fixture main body 11 and the LED cover 17. 18 and a seal member 19.
The LED cover 17 is a wide-angle lens that distributes light components at the center of the cover 16.
Moreover, the lighting fixture 10 is inserted into a through-hole (see FIG. 3) 20 provided in the fixture main body 11 from the power supply unit 15 and connected to a circuit board 21 provided in the LED light emitting unit 14 (see FIG. 3). 22.
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.

Furthermore, the lighting fixture 10 is provided with a hole 24 for operating the attachment portion 12 in the central portion of the appliance main body 11, and closes the hole 24 so that the cover 16 side of the attachment portion 12 is disposed on the cover 16 side. A cover member 25 is provided for removably covering.
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 rotating the cover 16 are attached to the outer edge portion on the floor surface side of the instrument main body 11.
As for the instrument main body 11, the floor surface side functions as a reflective surface.
The LED light emitting unit 14 includes an arc-shaped circuit board 21 separated so as to divide the circumference into four parts.
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 different characteristics, such as color temperature, can apply to the some LED30 chip | tip of inner peripheral side, and the some LED chip 31 of outer peripheral side, respectively.

The attachment portion 12 is an attachment adapter that is mechanically and electrically connected to a hooking ceiling (see FIG. 2) 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 cover 16 is made of, for example, milky white resin, and is fixed to the cover engaging portion 29 of the instrument main body 11.

The LED cover 17 is made of a resin having translucency, and includes an inner peripheral lens portion 32 that covers a plurality of inner peripheral LED chips 30 and an outer peripheral lens portion 33 that covers a plurality of outer peripheral LED chips 31. It has an annular shape.
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 screw hole portions 35 on an outer edge portion formed in a bowl shape, and has a plurality of screw hole portions 36 on an inner edge portion similarly formed in a bowl shape.

The LED cover 17 is attached to the instrument main body 11 by screwing a screw (not shown) into the instrument main body 11 through the screw hole 35 on the outer edge and the screw hole 36 on the inner edge.
The hole 24 is formed in an oval shape having an inner diameter that is sufficiently larger than the outer diameter of the mounting portion 12.
The lid member 25 has an oval outer shape having an outer diameter dimension larger than the inner diameter dimension of the hole portion 24, and is detachably attached to the hole portion 24 by being turned around the hole portion 24. The lid member 25 has a reflective function on the surface.
Therefore, the lid member 25 can be operated to operate the attachment portion 12 disposed inside the hole portion 24 by being removed.

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 reflection function, the light component emitted toward the lid member 25 is reflected, so that the cover 16 cannot be shaded.

Next, the LED light emitting unit 14 will be described in detail.
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 grips the grommet 23 by fitting the grommet 23 with the two adjacent grommet fitting portions 37 among the plurality.

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 a depth dimension L1 slightly larger than the thickness dimension T1 of the circuit board 21 of the LED light emitting unit 14 on the surface facing the instrument body 11, and the plurality of circuit boards 21 are arranged. An annular substrate recess 39 similar to the outer shape to be formed is provided.
The substrate recess 39 has a length L3 in the radial direction that is slightly larger than the width L2 that the circuit board 21 has in the radial direction of the LED cover 17.
Therefore, the LED cover 17 can accommodate the circuit board 21 so that the circuit board 21 does not jump out to the instrument body 11 side.

The substrate recess 39 may be formed independently on each circuit board 21.
Further, when a plurality of circuit boards 21 are connected by connectors, recesses for escaping the connectors are formed in the substrate recesses 39.
Here, when the substrate recess 39 is not formed in the LED cover 17, the circuit board 21 is not accommodated in the LED cover 17, so that the thickness dimension of the assembly of the LED cover 17 and the circuit board 21 is the thickness dimension of the LED cover 17. And the thickness dimension of the circuit board 21.

Therefore, the thickness dimension and the width dimension of the assembly of the LED cover 17 and the circuit board 21 are increased.
Therefore, since the LED cover 17 accommodates the circuit board 21, the LED cover 17 can be made small, and the entire lighting fixture 10 can be reduced in size and thickness.

The LED cover 17 has an inner peripheral LED concave portion 40 in which the inner peripheral LED chip 30 is accommodated at a position corresponding to the inner peripheral LED chip 30 in the substrate concave portion 39 and light emitted from the LED chip 30 is incident. .
The LED cover 17 has an inner peripheral LED concave portion 41 in which the outer peripheral LED chip 31 is accommodated in a position corresponding to the outer peripheral LED chip 31 in the substrate concave portion 39 and light emitted from the LED chip 31 is incident.

The LED cover 17 has a seal member recess 42 on the inner periphery side for accommodating the inner periphery side seal member 18 on the inner periphery side of the substrate recess 39, and an outer peripheral side on the outer periphery side of the substrate recess 39. The seal member recess 43 on the outer peripheral side for accommodating the seal member 19 is provided.
The inner peripheral side seal member concave portion 42 and the outer peripheral side seal member concave portion 43 are formed on the surface of the LED cover 17 facing the appliance main body 11.

As shown in FIG. 5, the LED cover 17 is provided with an inner peripheral holding convex portion 44 that protrudes from one of the central portion and the peripheral portion 13 of the instrument main body 11 in the inner peripheral seal member concave portion 42 to the other. It has been.
Further, the LED cover 17 is provided with a holding convex portion 45 on the outer peripheral side that protrudes from one of the central portion and the peripheral portion 13 of the instrument main body 11 in the seal member concave portion 43 on the outer peripheral side.
The inner peripheral holding convex portion 44 protrudes into the inner peripheral sealing member concave portion 42 in the radial direction of the LED cover 17. Similarly, the outer peripheral holding convex portion 45 is an outer peripheral sealing member. The LED cover 17 projects into the recess 43 in the radial direction.

As shown in FIG. 6, the seal member 19 on the outer periphery side is fitted into the seal member recess 43 on the outer periphery side of the LED cover 17. Similarly, although not shown here, the inner peripheral seal member 18 is fitted into the inner peripheral seal member recess 42 of the LED cover 17.
Therefore, the outer peripheral seal member 19 fitted in the outer peripheral seal member concave portion 43 is held by the outer peripheral seal member concave portion 43 by being locked to the outer peripheral holding convex portion 45.

Similarly, the inner circumferential side sealing member 18 fitted in the inner circumferential side sealing member concave portion 42 is retained by the inner circumferential side sealing member concave portion 42 by being locked to the inner circumferential side holding convex portion 44. Is done.
Therefore, the LED cover 17 can hold the inner seal member 18 in the inner seal member recess 42 and the outer seal member 19 in the outer seal member recess 43 until the assembly is completed.

As shown in FIG. 7, the LED cover 17 is provided with a pressing protrusion 46 on the surface facing the instrument body 11.
As shown in FIG. 8, the pressing protrusion 46 has an inner diameter dimension equal to or larger than the outer diameter dimension of the grommet 23 and is formed in an annular shape having a height dimension sufficiently smaller than the height dimension of the grommet 23. Yes.
As shown in FIG. 9, the pressing protrusion 46 presses the connection line 22 drawn from the grommet 23 into the cover 16 to the grommet 23 when the circuit board 21 is assembled to the LED cover 17.

Accordingly, the pressing protrusion 46 presses and fixes the connecting wire 22 in order to press the connecting wire 22 drawn from the grommet 23 into the cover 16 to the grommet 23, whereby the connecting wire 22 is pulled and disconnected. There is little possibility to do.
Further, since the pressing protrusion 46 has an inner diameter dimension that is greater than or equal to the outer diameter dimension of the grommet 23, disconnection can be prevented by not applying an unnecessarily large pressing load to the connecting wire 22.

Next, the pressing protrusion 51 of the modification in the LED cover 17 of the lighting fixture 10 of one Embodiment which concerns on this invention is demonstrated.
As shown in FIG. 10, the pressing protrusion 51 of the modified example is composed of a pair of ridges 52, and the ridges 52 have a separation dimension equal to or larger than the outer diameter dimension of the grommet 23.

As shown in FIG. 11, when the circuit board 21 is assembled to the LED cover 17, the pressing protrusion 51 of the modified example presses the connection line 22 drawn from the grommet 23 into the cover 16 against the grommet 23.
Accordingly, the pressing protrusion 51 presses and fixes the connecting wire 22 so that the connecting wire 22 drawn out from the grommet 23 into the cover 16 is pressed against the grommet 23, whereby the connecting wire 22 is pulled and disconnected. There is little possibility to do.

In such a lighting fixture 10, the LED cover 17 in which the inner peripheral side seal member 18 is fitted in the inner peripheral side seal member concave portion 42 and the outer peripheral side seal member 19 is fitted in the outer peripheral side seal member concave portion 43. A plurality of circuit boards 21 are incorporated.
Then, in the lighting fixture 10, the screw is screwed into the fixture body 11 through the screw hole portion 35 on the outer edge portion and the screw hole portion 36 on the inner edge portion of the LED cover 17, so that the LED cover 17 is attached to the fixture body 11.

Therefore, in the lighting fixture 10, the fixture main body 11 and the LED cover 17 are sealed with the LED light emitting unit 14 by the inner peripheral side sealing member 18 and the outer peripheral side sealing member 19.
Therefore, the luminaire 10 can be waterproof and moisture-proof, and can prevent deterioration of electrical components and maintain initial performance for a long period of time.
Moreover, the lighting fixture 10 can suppress that the silver screen used as a reflection layer of the LED chip 30 and the LED chip 31 is blackened by sulfur in the atmosphere and lowers the luminance, thereby maintaining the initial performance for a long time.

As mentioned above, according to the lighting fixture 10 of one Embodiment which concerns on this invention demonstrated, waterproofness and moisture proofness are acquired, deterioration prevention of an electrical component and initial performance can be maintained for a long time.
Moreover, according to the lighting fixture 10, it can suppress that the silver screen used as a reflection layer of the LED chip 30 and the LED chip 31 is blackened by sulfur in the atmosphere and the luminance is lowered, and this also maintains the initial performance for a long time. it can.

  According to the lighting fixture 10, since the LED cover 17 accommodates the circuit board 21, the LED cover 17 can be made small, and the whole lighting fixture 10 can be reduced in size and thickness.

  According to the lighting fixture 10, the LED cover 17 can hold the inner peripheral seal member 18 in the inner peripheral seal member recess 42 until the assembly is completed, and the outer peripheral seal member 19 in the outer peripheral seal member recess 43. Can be held.

  According to the lighting apparatus 10, the pressing protrusions 46 and 51 are connected by pressing and fixing the connecting wire 22 in order to press the connecting wire 22 drawn out from the grommet 23 into the cover 16 to the grommet 23. There is little possibility that the wire 22 is pulled and disconnected.

  According to the lighting apparatus 10, the pressing protrusions 46 and 51 have an inner diameter dimension that is greater than or equal to the outer diameter dimension of the grommet 23, so that an unnecessarily large pressing load is not applied to the connection line 22. Disconnection can be prevented.

  In addition, in the lighting fixture of this invention, an LED light emission part, an attachment part, a power supply part, a cover, etc. are not limited to one Embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Appliance main body 12 Mounting part 13 Peripheral part 14 LED light emission part 15 Power supply part 16 Cover 17 LED cover 18, 19 Seal member 39 Substrate recessed part 42, 43 Seal member recessed part 44, 45 Holding convex part

Claims (3)

An instrument body;
Provided in a central portion of the instrument body, and an attachment part for attaching the instrument body to a ceiling surface;
A plurality of LED light emitting sections provided in an annular shape in the peripheral portion around the central portion of the instrument body;
A power supply provided inside the appliance body for supplying power to the LED light emitting units;
A cover provided on the peripheral part of the instrument body so as to cover each LED light emitting part,
Each said LED light emission part is fixed to the said instrument main body, The lighting fixture which has an LED cover which covers each said LED light emission part, and the sealing member interposed between the said instrument main body and the said LED cover. The lighting fixture according to claim 1,
The lighting fixture in which the board | substrate recessed part corresponding to the thickness dimension of the circuit board of the said LED light emission part is provided in the surface which faces the said fixture main body in the said LED cover. The lighting fixture according to claim 1 or 2,
A seal member recess corresponding to the seal member is provided on a surface of the LED cover facing the instrument body,
A lighting fixture in which the holding projection that protrudes from one of the central portion and the peripheral portion of the fixture body is provided in the seal member recess.

Images