JP6167402B2 - lighting equipment - Google Patents

Description

  The present invention relates to a luminaire having a mounting portion on a ceiling surface or the like at the center, and a light source arranged in a circle around the mounting portion.

2. Description of the Related Art Conventionally, there is known a lighting fixture that has a mounting portion on a ceiling surface or the like at the center, and a light source is arranged in a circle around the mounting portion (see, for example, Patent Document 1).
As illustrated in FIG. 8, the lighting fixture 100 described in Patent Literature 1 includes a circular plate-shaped main body 101. A circular opening 102 is formed in a substantially central portion of the main body 101. Further, a light source part (light emitting part) 103 is attached to the lower surface of the outer peripheral part of the main body 101, and a step part 105 is formed on the outer peripheral side of the flat part 104 on the inner surface side of the light source part 103 toward the back side. A bowl-shaped recess 106 is formed.
Further, an elastic member 107 is provided on the back side of the main body 101.

The light source unit 103 includes a substantially circular substrate 108 and a plurality of light emitting elements 109 mounted on the substrate 108.
The opening 102 is provided with an adapter 111 that is electrically and mechanically connected to a hooking sealing body 110 installed on the ceiling surface.
The lighting device (power supply unit) 112 is attached to the lower surface of the central portion of the main body 101 outside the adapter 111 and is electrically connected to the adapter 111. Lighting power is supplied.

JP2012-160455A (FIG. 4)

However, in the conventional lighting fixture 100, since the light emission part (light source part 103) and the power supply part (lighting device 112) are provided on the same side with respect to the main body 101, heat generated by the light emission part and heat generated by the power supply part. Interact with each other.
For this reason, there existed a problem that the heat dissipation of a light emission part worsened.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a lighting fixture that can improve the heat dissipation of the light emitting section.

The lighting fixture of the present invention includes a fixture main body provided with a mounting portion to the attached portion at the center, and a concave portion on the attached portion side, and a side opposite to the attached portion side. A power source portion provided in the concave portion of the step portion, a light emitting portion provided in the convex portion of the step portion, and the concave portion bypassing the attachment portion. and at least a part of, have a, a lid member covering said power supply unit, the upper surface of the lid member is one in which the elastic member is disposed.

  Moreover, the lighting fixture of this invention has the said power supply part attached to the said cover member.

  Moreover, the lighting fixture of this invention is provided with the wall part in the said cover member.

  Moreover, the lighting fixture of this invention is a thing in which the said wall part is a flat plate.

  Furthermore, the lighting fixture of this invention has the planar outline of the said recessed part with the linear part which notched a part of circle | round | yen, and the circular arc part which notched the said circle | round | yen with the said linear part.

  In the present invention, the instrument body is provided with a stepped portion that forms a concave portion on the attached portion side and a convex portion on the opposite side of the attached portion side, and a power source portion is provided in the concave portion, and a light emitting portion is provided on the convex portion. Was provided. For this reason, since a power supply part and a light emission part are provided in the opposite side with respect to a fixture main body, it is hard to receive to the influence of the heat which a power supply part emits, and provides the lighting fixture which has the effect that the heat dissipation of a light emission part improves it can.

Sectional drawing of the state which attached the lighting fixture of embodiment which concerns on this invention to the ceiling surface The perspective view which looked at the lighting fixture of embodiment which concerns on this invention from upper direction The perspective view which looked at the state which removed the cover of the lighting fixture of embodiment which concerns on this invention from the downward direction The exploded perspective view which looked at the lighting fixture of embodiment which concerns on this invention from upper direction The exploded perspective view which looked at the lighting fixture of embodiment which concerns on this invention from the downward direction The perspective view which looked at the lid member to which the power supply part was attached from the lower part The exploded perspective view which looked at the lid member to which the power supply part was attached from the lower part Cross-sectional view of a conventional lighting fixture

Hereinafter, the lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIG. 1, the lighting fixture 10 of embodiment is attached to the ceiling surface 11, for example as a construction material which is a to-be-attached part, and can be used mainly to illuminate the downward direction.
In the following description, the floor side in the illumination direction is “lower”, and the ceiling surface 11 side is “upper”.
When the mounting surface is a wall surface, the indoor side is “lower” and the wall surface side is “up”.

As shown in FIG. 1, the lighting fixture 10 has a fixture body 20 attached to the ceiling surface 11.
The instrument main body 20 has an adapter (attachment portion) 21 that is electrically and mechanically connected to the hook ceiling 12 attached to the ceiling surface 11 at the center. Therefore, the appliance main body 20 is attached to the ceiling surface 11 by connecting the adapter 21 to the hooking ceiling 12.
A bottomed cylindrical light-transmitting cover 50 that covers the front surface of the instrument body 20 is detachably attached to the instrument body 20.

As shown in FIGS. 2 and 4, the instrument main body 20 has a substantially disc shape as a whole, and the outer peripheral edge has an outer peripheral portion 22 on the same plane. A plurality of (here, three) elastic members 23 are attached at equal intervals on the upper surface of the outer peripheral portion 22, and contact the ceiling surface 11 when the instrument body 20 is attached to the ceiling surface 11. It fixes so that the instrument main body 20 may not wobble (refer FIG. 1).
A frustoconical inclined surface 24 that is inclined downward toward the inside is provided inside the outer peripheral portion 22, and a bottom surface portion 25 having an opening 28 in the center is provided inside the inclined surface 24. ing. The outer peripheral portion 22, the inclined surface 24, and the bottom surface portion 25 constitute a stepped portion 30. The adapter 21 is attached to the opening 28 (see FIG. 5).

The instrument body 20 is generally formed by pressing a single metal plate. For this reason, as shown in FIGS. 4 and 5, a concave portion 26 is formed on the upper side of the stepped portion 30, that is, on the ceiling surface side of the instrument body 20, in a direction away from the ceiling surface (see FIG. 4). The step portion 30 forms a convex portion 27 protruding to the floor surface side on the lower side, that is, on the floor surface side of the instrument body 20 (see FIG. 5).
The inclined surface 24 of the instrument body 20 is provided with a partially linear straight inclined surface 241, and a widened portion 221 is formed on the outer peripheral portion 22. Therefore, the planar outline (outer shape) of the recess 26 has a recess straight part (corner part) 261 that cuts out a part of the circle and a recess arc part 262 that is cut out of the circle by the recess straight part 261. The concave straight portion 261 is preferably provided in parallel to the tangent of the circle forming the concave 26. The smaller the outer peripheral portion 22 is, the smaller the instrument can be realized. In the case of this embodiment, the fixture mentioned later has the width | variety which can be attached at least.
Similarly, the planar contour (outer shape) of the convex portion 27 also has a convex linear portion 271 and a convex arc portion 272 (see FIG. 5).
A light receiving portion opening 273 for the remote control light receiving portion 35 is provided at a position corresponding to the outer peripheral edge of the convex portion linear portion 271 of the convex portion 27, that is, the concave portion linear portion 261 of the concave portion 26. The light receiving portion opening 273 is located outside the light emitting portion 40 described later.
That is, the light receiving portion opening 273 is provided at a position where the concave portion linear portion 261 and the concave portion arc portion 262 intersect and inside thereof, so that the remote control light receiving portion 35 and the light emitting portion 40 are disposed so as not to overlap each other. ing.

A power source 29 is provided in the recess 26 of the instrument body 20.
As shown in FIG. 6 and FIG. 7, the power supply unit 29 has a circuit board 291 having a substantially rectangular plate shape, and one side (side part) 292 of the circuit board 291 extends along the concave straight part 261 of the concave part 26. Are arranged as follows. On the lower surface of the circuit board 291, electronic components, a remote control light receiving unit 35, and the like are provided.
As shown in FIG. 4 and FIG. 5, the remote control light receiving unit 35 is provided at a position corresponding to the light receiving unit opening 273 provided in the convex portion 27 of the instrument body 20. That is, the remote control light receiving unit 35 is located outside the outline of the light emitting unit 40 and does not overlap the light emitting unit 40.

The power supply unit 29 is covered with a metallic lid member 31 on the upper side. That is, the lid member 31 is attached to the widened portion 221 and the outer peripheral portion adjacent to the widened portion 221 in the outer peripheral portion 22 of the instrument main body 20 with screws 315, and the concave portion straight portion 261 and the vicinity thereof are bypassed to bypass the adapter 21. The recess 26 is covered (see FIG. 2).
An elastic member 23 is disposed on the upper surface of the lid member 31 (see FIG. 2), and when the instrument body 20 is attached to the ceiling surface 11, the elastic member 23 widens the outer peripheral surface of the lid member 31. Since it contacts and presses against the upper surface of the part 221, it can prevent that the cover member 31 falls in a recessed part.

As shown in FIGS. 6 and 7, it is desirable to provide the lid member 31 with a wall portion 313 that closes a space formed on the center side of the recess 26 in the lid member 31. The wall portion 313 can be provided by bending the edge of the lid member 31 downward. Therefore, the wall part 313 is planar, and the ridgeline 314 (refer FIG. 4) which is a bending line becomes a straight line. The ridge line 314 is preferably arranged in parallel with the concave straight portion 261 of the concave portion 26.
Alternatively, the wall portion 313 can be provided separately and joined to the lid member 31.
Further, the inner surface 311 of the lid member 31 is provided with a protrusion 312 protruding downward at a predetermined position. Here, for example, three protrusions 312 are provided.

The power supply unit 29 can be attached to the inner surface 311 of the lid member 31 via the insulating member 32. The insulating member 32 is sized and shaped to cover the circuit board 291, and an opening 321 is provided at a position corresponding to the protrusion 312 provided on the inner surface 311 of the lid member 31.
Each opening 321 is provided with a heat dissipation sheet 33 that fits into the opening 321. A locking claw 322 that locks the circuit board 291 is provided on the outer peripheral portion of the insulating member 32.

Therefore, the power supply unit 29 is attached to the lid member 31 by locking the circuit board 291 with the locking claws 322 of the insulating member 32 attached to the inner surface 311 of the lid member 31.
At this time, the front end surface (lower end surface) of the protrusion 312 of the lid member 31 is in contact with the circuit board 291 via the heat dissipation sheet 33 provided in the opening 321 of the insulating member 32. For this reason, the heat of the circuit board 291 is transmitted to the lid member 31 via the heat dissipation sheet 33 and the protrusion 312.
Therefore, it is effective in terms of heat dissipation that the protrusions 312 and the heat dissipation sheet 33 provided on the lid member 31 are provided corresponding to the parts or components that generate a lot of heat in the circuit board 291.

As shown in FIGS. 3 and 5, a light emitting unit 40 is attached to the convex portion 27 of the instrument body 20. The light emitting unit 40 includes an LED substrate 42 on which the LED chip 41 is mounted, and a translucent light emitting unit cover 43 that covers the front (downward) of the LED substrate 42.
The LED substrate 42 is formed as an overall annular shape by connecting two semi-annular mounting substrates 421. On each mounting substrate 421, a plurality of LED chips 41 are arranged in two rows in an arc shape.
Although the same kind of LED chip 41 can be used, the thing from which a color differs can also be arranged. Thereby, the color of the illumination light which the light emission part 40 emits can be changed by controlling the LED chip 41 to light.

An annular light emitting part cover 43 having translucency is provided in front (downward) of the LED substrate 42. Thereby, the light distribution of the light emitting unit 40 is controlled.
The light emitting unit cover 43 is provided with a remote control light receiving unit cover 431 protruding outward from the ring. That is, the remote control light receiving unit cover 431 is located outside the LED substrate 42 in the light emitting unit 40. Thereby, size reduction of an instrument can be achieved.
Further, the remote control light receiving portion cover 431 is positioned below the light receiving portion opening 273 provided in the convex portion 27 of the instrument body 20.
Accordingly, a signal from a remote control transmitter (not shown) is received by the remote control light receiving unit 35 from the remote control light receiving unit cover 431 through the light receiving unit opening 273.

As shown in FIGS. 3 and 5, an attachment 34 for attaching the cover 50 to the instrument body 20 is provided on the outer peripheral edge portion of the lower surface of the instrument body 20.
A plurality of attachments 34 (here, for example, three) are provided, and are provided at equal intervals.
Thereby, the cover 50 is detachably attached to the instrument main body 20.

Next, the effect of the lighting fixture 10 is demonstrated.
The lighting fixture 10 has a concave portion 26 on the ceiling surface 11 side and a convex portion 27 on the opposite side to the ceiling surface 11 side in the fixture main body 20 provided with an adapter 21 to the ceiling surface 11 in the center. A stepped portion 30 was provided.
And while providing the power supply part 29 in the recessed part 26, the light emission part 40 was provided in the convex part 27. FIG.
For this reason, since the power supply part 29 and the light emission part 40 are provided in the other side with respect to the instrument main body 20, the heat dissipation of the light emission part 40 improves.
In addition, since the lid member 31 that covers the power supply unit 29 is provided, it is possible to prevent dust and the like from entering the power supply unit 29. Moreover, since the cover member 31 covers the power supply part 29 which is a part of the recessed part 26, locations other than the power supply part 29 in the recessed part 26 are exposed, and heat dissipation is improved.

  Moreover, since the power supply unit 29 is attached to the lid member 31 in the lighting fixture 10, the power supply unit 29 can be easily attached to the fixture body 20 by attaching the lid member 31.

  Moreover, since the lighting fixture 10 is provided with the wall part 313 in the cover member 31, it is hard to enter dust. Further, since the surface area of the lid member 31 is increased, the heat dissipation is improved.

  Moreover, since the wall part 313 is a flat plate in the lighting fixture 10, the ridgeline 314 of the main body of the cover member 31 and the wall part 313 becomes a straight line, and can be easily integrally formed by bending.

  Furthermore, the lighting fixture 10 has a concave straight portion 261 in which a part of a circle is cut out and a concave arc portion 262 in which a circle is cut out by the concave straight portion 261. Can be easily grasped.

Further, the planar outline of the recess 26 is formed by a recess linear portion 261 in which a part of a circle is cut out, and a recess arc portion 262 in which a circle is cut out by the recess linear portion 261, and a substantially rectangular circuit board of the power supply unit 29. 291 is arranged so that one side 292 of the circuit board 291 is along the concave straight portion 261.
For this reason, the circuit board 291 can be easily positioned.
In addition, the remote control light receiving unit 35 is provided at a position where the projection 27 does not overlap the light emitting unit 40 in plan view.
Thereby, since the remote control signal to the remote control light receiving unit 35 does not pass through the light emitting unit 40, it is difficult to be influenced by the light emitting unit 40, and a stable operation can be ensured.

  Moreover, since the remote control light-receiving part 35 is arrange | positioned in the position corresponding to the recessed part linear part 261 which forms the planar outline of the recessed part 26, the lighting fixture 10 is preferable on design.

  Furthermore, since the remote control light-receiving part 35 is arrange | positioned on the outer side of the light emission part 40, the lighting fixture 10 cannot be easily influenced by the light emission part 40, and can ensure the stable operation | movement.

  The lighting fixture of the present invention is not limited to the above-described embodiment, and appropriate modifications and improvements can be made.

10 Lighting equipment 11 Ceiling surface (attached part)
20 Instrument body 21 Adapter (mounting part)
25 Bottom part 26 Concave part 261 Concave part straight part (straight part)
262 Concave arc part (arc part)
27 Convex part 29 Power supply part 30 Step part 31 Cover member 313 Wall part 40 Light emitting part

Claims (5)

An instrument body provided with a mounting portion to the mounted portion at the center,
Provided in the instrument body, and having a stepped portion that forms a concave portion on the attached portion side and forms a convex portion on the opposite side of the attached portion side,
A power supply provided in the recess of the stepped portion;
A light emitting part provided on the convex part of the step part,
Bypassing the mounting portion possess at least a part of said recess, and a cover member covering said power supply unit,
A lighting fixture in which an elastic member is disposed on an upper surface of the lid member . The lighting fixture according to claim 1,
The lighting fixture with which the said power supply part is attached to the said cover member. The lighting fixture according to claim 1 or 2,
A lighting fixture in which a wall portion is provided on the lid member. The lighting fixture according to claim 3,
The lighting fixture whose said wall part is a flat plate. In the lighting fixture of any one of Claims 1-4,
The lighting fixture in which the planar outline of the concave portion includes a straight line portion that cuts out a part of a circle, and an arc portion that is cut out of the circle at the straight line portion.

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