WO2011145425A1

WO2011145425A1 - Lighting fixture

Info

Publication number: WO2011145425A1
Application number: PCT/JP2011/059754
Authority: WO
Inventors: 有士中川; 裕亮田島; 英臣古屋
Original assignee: パナソニック電工株式会社
Priority date: 2010-05-20
Filing date: 2011-04-20
Publication date: 2011-11-24
Also published as: CN102906493A; CN102906493B; JP2011243509A; JP5489345B2

Abstract

Disclosed is a lighting fixture wherein a reflective plate can be easily positioned and reliably attached with respect to a mounting substrate. When attaching a reflective plate (34)—which reflects light from a light source (31) in a predetermined direction—to the front of a mounting substrate (32) to which the light source (31) is mounted, a fitting protrusion (36) that is provided to the rear surface of the reflective plate (34) is fitted to a fitting hole (323) provided to the front surface of the mounting substrate (32). At that time, a tapered section (362) that is provided to the outer surface of the fitting protrusion (36) and that tapers from the front surface side of the reflective plate (34) to the rear surface side is inserted into the fitting hole (323), and so it is possible to reliably position the reflective plate (34) relatively with respect to the mounting substrate (32), and it is possible to position the light source (31) at a predetermined position of the reflective plate (34).

Description

lighting equipment

The present invention relates to a luminaire that is embedded in a ceiling construction surface using, for example, an LED as a light source and is used for lower illumination.

2. Description of the Related Art Conventionally, a lighting fixture that uses an LED as a light source and is embedded in a ceiling surface is known (see, for example, Patent Document 1).

As shown in FIG. 8, the lighting fixture 100 described in Patent Document 1 is a downlight that is installed by being inserted into a mounting hole provided in a ceiling. This lighting fixture 100 has a fixture main body 102 that has a substantially cylindrical shape and has an opening (opening portion 106) below, and accommodates a mounting substrate 107 on which a plurality of LEDs 101 are mounted as light sources.
A power supply device 103 that supplies power to the LED 101 is provided on the upper part of the instrument main body 102. The power supply device 103 is provided so as to be located in the outer region of the outer periphery of the instrument body via the arm portion 104. A plurality of radiating fins 105 are provided on the upper surface of the instrument main body 102, and the arm unit 104 is coupled substantially horizontally from the radiating fins 105 so as to project the power supply device 103 to an outer region on the outer periphery of the instrument main body. .
The lighting device 100 is embedded in the ceiling surface, exposes the opening 106 of the instrument body 102 from the ceiling surface, and houses the power supply device 103 and the like on the back side of the ceiling surface.

Japanese Unexamined Patent Publication No. 2008-159455 (FIG. 1)

By the way, in the conventional lighting fixture 100 as described above, as shown in FIG. 9, a reflector 108 for irradiating the light of the LED 101 in a predetermined direction may be attached to the front surface of the mounting substrate 107. That is, the mounting substrate 107 and the reflection plate 108 are fastened and attached with screws 109 from the back side of the instrument body 102.
However, the front surface 107A of the mounting substrate 107 and the rear surface 108A of the reflecting plate 108 are in surface contact, and there is a problem that positioning of the reflecting plate 108 is troublesome when the reflecting plate 108 is attached to the front surface of the mounting substrate 107. there were.

The present invention has been made in order to solve the conventional problems. When the reflector is attached to the mounting substrate, the illumination can be easily positioned and the light source can be reliably attached to a predetermined position of the reflector. The purpose is to provide equipment.

The luminaire of the present invention includes a mounting board on which a light source is mounted, a reflecting plate that is provided in front of the mounting board and reflects light from the light source in a predetermined direction, and that houses the mounting board and the reflecting plate and has an opening in the front. An instrument body having a fitting hole on the mounting board, a fitting convex part that fits into the fitting hole on the back surface of the reflecting plate, and an outer surface of the fitting convex part from the front side of the reflecting plate. The taper part which tapers toward the back side is provided.

Moreover, the lighting fixture of this invention makes a fitting convex part fit in a fitting hole, and screws a fitting convex part from the back surface side of a mounting board.

Further, in the lighting fixture of the present invention, the fitting convex portion is provided in the vicinity of the outer peripheral wall of the reflecting plate.

Furthermore, the lighting fixture of the present invention includes a mounting board on which a light source is mounted, a reflecting plate that is provided in front of the mounting board and reflects light from the light source in a predetermined direction, and that houses the mounting board and the reflecting plate. An instrument body having an opening, provided with a polygonal fitting hole on the front surface of the mounting substrate, and provided with a polygonal cross-section fitting protrusion on the back surface of the reflector plate. is there.

The present invention provides a taper that tapers from the front side to the back side of the reflection plate on the outer surface of the fitting projection provided on the back surface of the reflection plate, and the fitting projection is provided on the mounting substrate. Since it is inserted into the hole, the relative positioning of the reflecting plate with respect to the mounting substrate can be reliably performed, and a lighting fixture having an effect that the light source can be easily positioned at a predetermined position of the reflecting plate can be provided.

The whole perspective view which looked at the lighting fixture of 1st Embodiment which concerns on this invention from upper direction (A) is a side view and a cross-sectional view of a lighting fixture, (B) is an enlarged view of a portion B in (A). (A) is the perspective view which looked at the state which attached the reflecting plate to the mounting substrate from the front, (B) is the perspective view seen from the back side (A) The perspective view which looked at the reflecting plate from the back side, (B) is an enlarged plan view of B part in (A), (C) is sectional drawing of CC position in (B) Sectional drawing which shows the state which mounted the mounting board and the reflecting plate in the instrument main body It is the lighting fixture concerning 2nd Embodiment, (A) is the perspective view which looked at the state which attached the reflecting plate to the mounting substrate from the front, (B) is the top view seen from the back side It is a lighting fixture concerning 3rd Embodiment, (A) is the perspective view which looked at the state which attached the reflecting plate to the mounting substrate from the front, (B) is the top view seen from the back side A perspective view of a conventional lighting fixture Sectional drawing which shows the problem in the conventional lighting fixture

(First embodiment)
Hereinafter, the lighting fixture of 1st Embodiment of this invention is demonstrated using drawing.
As shown in FIGS. 1 and 2, the lighting apparatus 10 according to the embodiment of the present invention can be used as a downlight that is embedded in a mounting hole 12 provided in a ceiling 11 and illuminates the lower part. The lighting fixture 10 includes a fixture main body 20, an LED light emitting unit 30 housed in the fixture main body 20, a frame body 40, and a lighting power supply device 60.

The instrument body 20 is formed in a cylindrical shape having a top plate 21 and a peripheral plate 22 (see FIG. 2B) using a hard resin material having insulating properties, and forward (here, downward). It is open. A plurality of radiating fins 23 protruding upward and a lighting power supply device 60 that supplies power for lighting to the LED light emitting unit 30 are attached to the upper surface of the top plate 21. The lighting power supply device 60 is provided so as to protrude outward from the top plate 21 of the appliance body 20 and is electrically connected to an external commercial power source.

The frame body 40 is formed in a cylindrical shape having an outer diameter dimension substantially the same as the outer diameter dimension of the instrument body 20, and is integrally assembled to the lower side of the instrument body 20. The inner surface 41 of the frame 40 is formed in, for example, an ellipse or a parabolic curved surface, and reflects light from the LED light emitting unit 30 in a predetermined direction and range.
An annular flange 42 that is exposed on the lower surface of the ceiling 11 in an attached state is integrally provided on the lower end surface of the frame body 40. A plurality (for example, two) of attachment springs 44 are attached to the outer peripheral portion 43 of the frame body 40.

Therefore, when attaching the lighting fixture 10 to the mounting hole 12 of the ceiling 11, the mounting spring 44 is elastically deformed upward (in the direction of arrow A in FIG. 2A) above the fixture body 20 and inserted into the mounting hole 12. Thereafter, the mounting spring 44 is released in the horizontal direction (in the direction of arrow B in FIG. 2 (A)) by elastic force, and the ceiling 11 is placed between the lower surface of the mounting spring 44 and the upper surface of the flange portion 42. The lighting fixture 10 is fixed to the ceiling 11 by sandwiching.

As shown in FIG. 2, the LED light emitting unit 30 includes an LED 31 that is a light source and an LED mounting substrate 32 that is a mounting substrate on which the LED 31 is mounted.
The LED mounting board 32 is provided with a through hole 323 (see FIG. 3B) which is a fitting hole for attachment at the center, and contacts the lower surface of the instrument body 20 via the heat conductive sheet 33. A reflector 34 is provided below the LED mounting substrate 32.
The reflector 34 is provided with a reflecting mirror part 341 positioned in front of the LED 31 corresponding to the number and arrangement of the LEDs 31 (see FIG. 3A), and reflects the light of the LEDs 31 downward. Further, a translucent front panel 35 is provided below the reflecting plate 34.

As shown in FIGS. 3 and 4, the reflecting plate 34 has a plate-like reflecting plate main body 343 and an outer peripheral wall 342 erected along the outer peripheral edge of the reflecting plate main body 343. The plurality of reflecting mirror portions 341 described above are provided.
The reflecting mirror part 341 is formed so as to protrude rearwardly from the rear surface 343A of the reflecting plate main body 343, and a notch 341A for the LED 31 is provided at the top. A boss 36, which is a fitting convex portion protruding backward from the back surface 343 </ b> A, is provided between the plurality of reflecting mirror portions 341 and at the center of the reflecting plate main body 343.

4B and 4C, the boss 36 has a columnar boss body 361 and a plurality of tapered ribs 362 as taper portions provided on the outer peripheral surface of the boss body 361. On the upper surface of the boss main body 361, a screw hole 363 for screwing the LED mounting substrate 32 and the reflection plate 34 to the instrument main body 20 (see FIG. 5, the mounting screw 24) is provided. Further, the taper rib 362 has an inclined surface that tapers from the front surface side to the back surface side (upward in FIG. 4C) of the reflection plate 34.

As shown in FIG. 5, the height H1 of the boss 36 is higher than the height H2 of the reflecting mirror part 341, and the height of the reflecting mirror part 341, the thickness of the LED mounting substrate 32, and the thickness of the heat conductive sheet 33 It does not exceed the height added.
In addition, although a taper part can be provided discretely like the some taper rib 362, it can also provide a continuous taper surface like a truncated cone.

Therefore, when attaching the LED mounting board 32 and the reflecting plate 34 to the instrument body 20, the boss 36 of the reflecting plate 34 is inserted into the through hole 323 of the LED mounting board 32. A tapered rib 362 provided on the outer periphery of the boss 36 abuts on the inner peripheral surface of the through hole 323, and positions the boss 36 at the center of the through hole 323.

Then, the boss 36 is pushed into the through hole 323 until the upper surface of the reflecting mirror part 341 contacts the lower surface of the LED mounting substrate 32, and then the mounting screw 24 is inserted into the mounting screw hole 25 of the instrument body 20. Screw into hole 363.
At this time, as shown in FIG. 5, the height H1 of the boss 36 is higher than the height H2 of the reflecting mirror portion 341, so that the upper portion of the boss 36 is inserted into the through hole 323 of the LED mounting board 32. Further, the height H1 of the boss 36 does not exceed a height obtained by adding the height H2 of the reflecting mirror part 341, the thickness of the LED mounting substrate 32, and the thickness of the heat conductive sheet 33. 34 is securely attached to the lower surface of the instrument body 20.

As mentioned above, according to the lighting fixture 10 of 1st Embodiment which concerns on this invention demonstrated, when attaching the reflecting plate 34 which reflects the light of LED31 to a predetermined direction ahead of the LED mounting board 32 which mounted LED31, A boss 36 provided on the back surface of the reflecting plate 34 is fitted into a through hole 323 provided in the LED mounting substrate 32.
At this time, taper ribs 362 that are provided on the outer surface of the boss 36 and taper from the front surface side to the back surface side of the reflection plate 34 are inserted into the through holes 323, so that the relative positioning of the reflection plate 34 with respect to the LED mounting substrate 32 is performed. Thus, the LED 31 can be easily positioned at a predetermined position of the reflector 34.

Further, since the boss 36 of the reflection plate 34 is screwed in a state where the boss 36 is fitted in the through hole 323 of the LED mounting substrate 32, the relative positioning of the reflection plate 34 with respect to the LED mounting substrate 32 is surely performed, and the LED 31 is mounted on the reflection plate. 34 can be easily fixed at a predetermined position.

(Second Embodiment)
Hereinafter, the lighting fixture 10B of 2nd Embodiment of this invention is demonstrated using drawing. In addition, the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10 of 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.
As shown in FIGS. 6A and 6B, a plurality (for example, three) of the bosses 36 are provided in the vicinity of the outer peripheral wall 342 of the reflecting plate 34, and the LED mounting board 32 is correspondingly provided. Is provided with a plurality of through holes 323.

That is, since the boss 36 is provided not on the center of the reflecting plate 34 but on the outer peripheral portion, at least three bosses 36 are provided in order to stably attach the LED mounting board 32 and the reflecting plate 34 to the instrument body 20. desirable. Further, the mounting direction can be limited by making the arrangement of the boss 36 and the through hole 323 asymmetric.

As described above, according to the lighting fixture 10B of the second embodiment of the present invention described above, since the boss 36 is provided in the vicinity of the outer peripheral wall 342 of the reflecting plate 34, the boss 36 is provided at the center of the reflecting plate 34. It is possible to prevent rotation around the center (see arrow A in FIG. 6B) as in the case, and to prevent the reflector 34 from being displaced with respect to the LED mounting substrate 32.

(Third embodiment)
Hereinafter, the lighting fixture 10C of 3rd Embodiment of this invention is demonstrated using drawing. In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the lighting fixture 10 of 1st Embodiment mentioned above, and the lighting fixture 10B of 2nd Embodiment, and the overlapping description is abbreviate | omitted.
As shown in FIGS. 7A and 7B, the boss 36C provided at the center of the reflecting plate 34 has a polygonal cross section. In addition, a polygonal through hole 323C is provided at the center of the LED mounting substrate 32 corresponding to the cross-sectional shape of the boss 36C.
The boss 36C can be provided with the above-described tapered rib 362 (see FIG. 4C) on the outer periphery, or can be formed into a polygonal frustum shape, but can also be formed into a columnar shape with a polygonal cross section.

As described above, according to the lighting fixture 10C of the third embodiment according to the present invention described above, the fitting hole 323C and the boss 36C have a polygonal cross section, and therefore the relative positioning of the reflector 34 with respect to the LED mounting board 32 is determined. The LED 31 can be easily positioned at a predetermined position of the reflector 34.

In addition, the lighting fixture of this invention is not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.

This application is based on a Japanese patent application filed on May 20, 2010 (Japanese Patent Application No. 2010-116702), the contents of which are incorporated herein by reference.

10, 10B, 10C Lighting fixture 20 Appliance main body 24 Mounting screw 31 LED (light source)
32 LED mounting board (mounting board)
323,323C Through hole (fitting hole)
34 Reflecting plate 342 Outer

peripheral wall

36, 36C Boss (fitting convex part)
362 Tapered rib (tapered part)

Claims

A mounting board mounted with a light source;
A reflector provided in front of the mounting substrate and reflecting light from the light source in a predetermined direction;
An instrument body that houses the mounting substrate and the reflector and has an opening in the front,
A mounting hole is provided in the mounting substrate,
A lighting fixture provided with a fitting convex portion that fits into the fitting hole on the back surface of the reflecting plate, and a tapered portion that tapers from the front surface side to the back surface side of the reflecting plate on the outer surface of the fitting convex portion. .
The lighting fixture according to claim 1,
The lighting fixture which makes the said fitting convex part fit to the said fitting hole, and screws the said fitting convex part from the back surface side of the said mounting substrate.
In the lighting fixture in any one of Claim 1 or Claim 2,
The lighting fixture in which the said fitting convex part is provided in the vicinity of the outer peripheral wall of the said reflecting plate.
A mounting board mounted with a light source;
A reflector provided in front of the mounting substrate and reflecting light from the light source in a predetermined direction;
An instrument body that houses the mounting substrate and the reflector and has an opening in the front,
A polygonal fitting hole is provided on the front surface of the mounting board,
The lighting fixture which provided the fitting convex part of the polygonal cross section fitted to the said fitting hole in the back surface of the said reflecting plate.