JP2015230867A - Panel type lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which enables easy attachment/detachment to a ceiling.SOLUTION: A panel type lighting device 100 includes: a lighting body 1; and an attachment piece 60 which attaches the lighting body 1 to a support member 200. A storage space A, in which at least a part of the support member 200 is stored, is formed between a folded part 65 and a wall part 64 in the attachment piece 60. A passage B which allows an upper part of the support member 200 to be inserted into the storage space A is formed between a bending part 66 and the wall part 64 and between a guiding part 67 and the wall part 64. Positioning at least the part of the support member 200 in the storage space A enables the lighting body 1 to be attached to the support member 200.

Description

  The present invention relates to a panel type lighting apparatus.

  A panel-type lighting fixture is known in Patent Document 1 and the like.

JP 2010-118186 A

By the way, the above-mentioned panel type lighting fixture is being fixed to the ceiling by screwing the fixing bracket provided in the lighting fixture to the support member of the ceiling. For this reason, when attaching / detaching the lighting fixture to / from the ceiling, it is necessary to tighten or loosen the screw, and it is difficult to easily attach / detach the lighting fixture to / from the ceiling.
Then, an object of this invention is to provide the panel type lighting fixture with easy attachment or detachment with respect to a ceiling.

The panel-type lighting fixture according to the present invention is
A panel-type lighting device installed in a space separated by a support member provided on the ceiling,
An illumination body having a light emitting unit;
An attachment piece fixed to the illumination body and attaching the illumination body to a support member;
The mounting piece is
A wall portion extending vertically,
A folded portion that extends in the horizontal direction so as to surround at least a part of the upper portion of the support member from the upper portion of the wall portion and is folded downward;
A bent portion extending downward while inclining toward the wall portion from the lower portion of the folded portion;
A lead-in part extending downward while inclining away from the lower part of the bent part, and
An accommodation space for accommodating at least a part of the support member is formed between the folded portion and the wall portion,
Between the bent part and the wall part and between the guiding part and the wall part, a passage is formed through which the upper part of the support member is inserted into the accommodating space.
The illumination body can be attached to the support member by positioning at least a part of the support member in the accommodation space.

According to the panel type lighting fixture according to the present invention, when the panel type lighting fixture is attached to the support member, the panel type lighting fixture is lowered from the upper side to the lower side with respect to the support member, thereby allowing the support member to pass through the attachment piece. The support member can be positioned in the housing space and attached to the housing space.
When removing the panel type lighting fixture from the support member, the panel type lighting fixture can be removed from the accommodation space via the passage by lifting the panel type lighting fixture with respect to the support member.
In this way, it can be attached to and detached from the support member by a simple operation such as lowering or lifting the panel-type lighting fixture without using a screw or the like.

In the panel-type lighting fixture according to the present invention,
The inclination angle of the guiding portion with respect to the vertical direction may be set smaller than the inclination angle of the bent portion with respect to the vertical direction.

  According to the panel-type lighting device according to the present invention, the support member can easily enter the housing space only by the weight of the panel-type lighting device due to the inclination of the guiding portion. Further, even when vibration such as an earthquake acts, it is possible to prevent the panel-type lighting device from being easily detached from the support member due to the inclination of the bent portion.

In the panel-type lighting fixture according to the present invention,
The mounting piece is fixed to the lighting body by a fixing screw fitted in a screw hole provided in the lighting body,
The mounting piece has a long hole portion through which the fixing screw is inserted and extends in a direction orthogonal to the insertion direction of the fixing screw,
The mounting piece may be capable of changing a relative position with respect to the illumination body by changing a relative position of the screw hole with respect to the elongated hole portion.

  According to the panel-type lighting fixture according to the present invention, for example, when two adjacent panel-type lighting fixtures are attached to a common support member, the mounting pieces interfere with each other by adjusting the position of the mounting pieces. Can be prevented.

  According to the lighting fixture which concerns on this invention, the lighting fixture with easy attachment or detachment with respect to a ceiling is provided.

It is a bottom view of the lighting fixture which concerns on embodiment of this invention. It is a sectional side view of the lighting fixture shown in FIG. It is a perspective view of a mounting bracket. It is sectional drawing of a part of mounting bracket. It is a schematic diagram which shows the layout of the ceiling using the lighting fixture which concerns on this embodiment.

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4.
FIG. 1 is a bottom view of a panel-type lighting fixture 100 according to the present embodiment, in which a part of a diffusion cover 40 is cut away. FIG. 2 is a side sectional view of the lighting apparatus 100 shown in FIG. In the following description, “lower” means the X direction shown in FIG. 2, and “right” means the Y direction shown in FIG.

  As shown in FIG. 1 and FIG. 2, the lighting fixture 100 is a flat rectangular parallelepiped panel type lighting fixture. The system ceiling to which the luminaire 100 according to the present embodiment is attached is provided with a panel space partitioned by beams extending in a lattice pattern. The lighting fixture 100 is fitted in this panel space.

  The lighting fixture 100 of the present embodiment is a square shape having a vertical and horizontal dimension of 600 mm in a plan view of FIG. 1 in order to fit into a rectangular parallelepiped panel-like space having a vertical and horizontal dimension of 600 mm divided into a rectangular shape on the system ceiling. Is formed. This luminaire 100 is supported by a plurality of fixtures called T-bars (support members) 200 (see FIG. 2).

  As shown in FIG. 2, the lighting fixture 100 includes a lamp unit 1 (lighting body) and a power supply unit 3 provided separately from the lamp unit 1. The power supply unit 3 receives electric power from an external power supply, converts it into a predetermined voltage or current, and outputs it. The lamp unit 1 is driven by electric power supplied from the power supply unit 3.

  The lamp unit 1 includes a base plate 10, a circuit board 20, a semiconductor light source unit 30 arranged linearly on the circuit board 20, and a diffusion cover 40 (light emitting unit). This luminaire 100 is attached to the system ceiling with the diffusion cover 40 facing downward.

  The base plate 10 is a single metal plate member that constitutes the upper surface of the lamp unit 1. The outer peripheral portion of the base plate 10 is bent obliquely downward, and the outer peripheral edge portion 11 protrudes laterally.

  The circuit board 20 can be configured by a printed board or the like. Printed wiring is formed on the circuit board 20, and power from the power supply unit 3 is supplied to the semiconductor light source unit 30 mounted on the circuit board 20. In the present embodiment, ten semiconductor light source units 30 are arranged in a line in the longitudinal direction on one elongated circuit board 20, and ten circuit boards 20 are attached to one base plate 10.

  The semiconductor light source unit 30 includes a light source 31 formed of an LED (Light Emitting Diode) and a lens element 32 provided integrally with the light source 31. The light source 31 is fixed to the circuit board 20 so that the light emitting surface faces downward. The lens element 32 refracts the light emitted from the light source 31 and emits the light downward and laterally.

  The circuit board 20 is attached to the base plate 10 by fasteners 50. Further, the circuit board 20 is in surface contact with the base plate 10, and heat from the semiconductor light source unit 30 is efficiently released to the base plate 10. The heat transmitted to the base plate 10 is radiated from the upper surface of the base plate 10 to the atmosphere.

  The diffusion cover 40 is a resin molded product integrally formed of milky white acrylic resin or the like. The diffusion cover 40 has a box shape opened upward. The diffusion cover 40 is attached to the base plate 10 with the opening surface facing the base plate 10. A lamp chamber S is formed between the diffusion cover 40 and the base plate 10. A circuit board 20 and a semiconductor light source unit 30 are accommodated in the lamp chamber S.

  Each of the outer peripheral edge of the base plate 10 and the outer peripheral edge 41 of the diffusion plate 40 has a shape protruding sideways. The outer peripheral edge of the base plate 10 and the outer peripheral edge of the diffusion plate 40 are in contact with each other, and the interior of the lamp unit 1 is sealed. The outer peripheral edge portion 11 of the base plate 10 and the outer peripheral edge 41 of the diffusion plate 40 form a flange portion 1 a protruding sideways on the side surface of the lamp unit 1.

  In the lamp unit 1 configured as described above, the light emitted from the semiconductor light source unit 30 is incident on the bottom surface and the side surface of the diffusion plate 40, so that the bottom surface and the side surface of the diffusion plate 40 emit light substantially uniformly.

The luminaire 100 is supported by a T-bar 200 provided on the ceiling. The T bar 200 is a substantially plate-like member extending in a direction perpendicular to the paper surface of FIG. The T bar 200 includes a beam portion 201, a ceiling material support portion 202 provided below the beam portion 201, and a connection portion 203 that connects the beam portion 201 and the ceiling material support portion 202. In the left-right direction, the connection portion 203 is smaller than the beam portion 201, and the ceiling material support portion 202 is formed larger than the connection portion 203. The ceiling material 300 is supported using the upper surface of the ceiling material support 202.
The luminaire 100 is attached to the beam portion 201 of the T bar 200 via an attachment bracket 60 (attachment piece) fixed to the lamp unit 1.

<Mounting bracket>
Next, the mounting bracket 60 will be described in detail with reference to FIGS. 3 and 4.
FIG. 3 is a perspective view showing the mounting bracket 60, and FIG. 4 is a cross-sectional view of the T-bar mounting portion 60 </ b> B of the mounting bracket 60. The mounting bracket 60 is formed by punching and bending a single metal plate. The mounting bracket 60 includes a lamp mounting portion 60A connected to the lamp unit 1 and a T bar mounting portion 60B connected to the T bar 200.

The lamp attachment portion 60 </ b> A includes a base contact portion 61, a flange holding portion 62, and a connection portion 63 that connects the base contact portion 61 and the flange holding portion 62.
The base contact portion 61 extends in the horizontal direction. The base contact portion 61 contacts the upper surface of the base plate 10. The base contact portion 61 includes a hanging strap fixing portion 69 to which one end of a hanging strap C (see FIG. 2) that prevents the lighting fixture 100 from falling is connected, and a long hole portion 70. The long hole portion 70 has a long hole shape extending along the outer edge of the lighting fixture 100. A fixing screw 71 penetrating the long hole portion 70 of the mounting bracket 60 is inserted into the screw hole 12 provided in the base plate 10 of the lamp unit 1 and the through hole 21 provided in the circuit board 20, whereby the mounting bracket 60. Is fixed to the lighting apparatus 100.
The flange holding part 62 is provided below the base contact part 61. The flange holding portion 62 has a U-shaped cross section that opens toward the flange portion 1 a so as to cover the flange portion 1 a of the lamp unit 1.
The base abutting portion 61 is fixed to the base plate 10, and the flange holding portion 62 holds the flange portion 1 a, whereby the mounting bracket 60 is fixed to the lamp unit 1.

The T-bar attachment portion 60B integrally includes a wall portion 64, a folded portion 65, a bent portion 66, a guide portion 67, and a guide portion 68.
The wall part 64 is a site | part extended in an up-down direction. The wall portion 64 extends upward from the end portion of the base contact portion 61. The wall portion 64 extends upward longer than the vertical dimension of the beam portion 201 of the T bar 200.
The folded portion 65 extends away from the wall portion 64 from the upper portion of the wall portion 64, and is folded downward on the tip side. In the present embodiment, the folded portion 65 is folded downward at an angle of about 90 °. The folded portion 65 is longer than the width dimension of the beam portion 201 of the T bar 200 and extends rightward from the upper portion of the wall portion 64. As shown in FIG. 4, the folded portion 65 is formed in a shape surrounding at least a part of the beam portion 201 on the upper portion of the T-bar 200.
Thereby, between the wall part 64 and the folding | returning part 65, the accommodation space A in which at least one part of T bar 200 is accommodated is formed.

The bent portion 66 extends downward while inclining from the lower portion of the folded portion 65 toward the wall portion 64.
The guiding portion 67 extends downward while inclining away from the lower portion of the bent portion 66 from the base contact portion 61. The inclination angle θ2 of the guide portion 67 with respect to the vertical direction is set smaller than the inclination angle θ1 of the bent portion 66 with respect to the vertical direction.
A guide portion 68 that extends downward while being inclined at a larger inclination angle than the guide portion 67 is provided at the lower portion of the guide portion 67. In the vertical direction, the lower end of the guide portion 68 is provided at a position substantially equal to the lower end of the wall portion 64.
A passage B through which the beam portion 201 of the T bar 200 is inserted into the accommodation space A is formed between the wall portion 64 and the bent portion 66 and between the guide portion 67 and the wall portion 64. The upper portion of the passage B is connected to a housing space A formed between the wall portion 64 and the folded portion 65. A lower portion of the passage B is opened downward.

<Attachment method and removal method of lighting fixture 100>
Next, a method for attaching and removing the lighting fixture 100 from the ceiling will be described.
First, a method for attaching the lighting fixture 100 to the ceiling will be described. The lighting fixture 100 with the mounting bracket 60 attached to the lamp unit 1 is lifted so that the opening of the passage B of the mounting bracket 60 is located above the beam portion 201 of the T bar 200.
Next, the position and posture of the luminaire 100 are adjusted with respect to the beam portion 201 so that the beam portion 201 of the T bar 200 is positioned at the opening of the passage B, and the luminaire 100 is lowered. Then, the beam part 201 of the T bar 200 is inserted toward the accommodation space A from the opening of the passage B. When the beam portion 201 enters the accommodation space A and the upper portion of the beam portion 201 comes into contact with the horizontally extending portion of the folded portion 65, the mounting bracket 60 is caught by the beam portion 201. Thereby, the attachment to the T bar 200 of the lighting fixture 100 is completed.
Thus, the luminaire 100 according to the present embodiment can be attached to the T-bar 200 by a simple method without using screws as in the prior art.
Further, when the lighting apparatus 100 is lowered, the lower portion of the passage B is widened by the guide portion 68 and the guide portion 67, so that the beam portion 201 of the T bar 200 is invited to the passage B by the guide portion 68 and the guide portion 67. The beam portion 201 is easily guided to the accommodation space A. Further, it is easy to allow the beam portion 201 to enter the accommodation space A only by the weight of the lighting fixture 100 using the inclination of the guide portion 67. Thus, the lighting fixture 100 can be attached to the T bar 200 easily and reliably.

When removing the luminaire 100 from the ceiling, the luminaire 100 is lifted upward so that the mounting bracket 60 is detached upward with respect to the beam portion 201, and the beam portion 201 is positioned at the opening. The lighting fixture 100 is lowered by changing the position and posture of the lighting fixture 100 so as not to cause the failure. Even in this case, it is not necessary to remove the screw, and the lighting apparatus 100 can be easily detached from the T-bar 200.
Since the upper portion of the passage B is narrowed by the bent portion 66 from the accommodation space A, when the lighting device 100 is lifted, the bent portion 66 comes into contact with the lower portion of the beam portion 201 and a resistance against the lifting force is generated. For this reason, for example, the lighting apparatus 100 is prevented from being lifted unintentionally due to an earthquake or the like, or unintentionally lifting the lighting apparatus 100 when wiping and cleaning the lower surface of the diffusion cover 40.
Thus, according to this embodiment, the lighting fixture 100 with which attachment or detachment with respect to T-bar 200 is easy is provided.

  In the luminaire 100 according to the present embodiment, the inclination angle θ2 of the guiding portion 67 with respect to the vertical direction is set smaller than the inclination angle θ1 of the bending portion 66 with respect to the vertical direction. For this reason, the beam part 201 of the T-bar 200 can easily enter the accommodation space A due to the inclination of the guide part 67 and the lighting device 100 is prevented from being unintentionally detached from the beam part 201 due to the inclination of the bent part 66. It's easy to do.

  Further, in the luminaire 100 according to the present embodiment, the long hole portion 70 has a long hole shape extending in a direction orthogonal to the insertion direction of the fixing screw 71. For this reason, the screw hole 12 of the base plate 10 can be relatively moved in the long hole portion 70 to shift the mounting position of the mounting bracket 60 to the lamp unit 1 in the extending direction of the long hole portion 70. Accordingly, for example, when the mounting brackets 60 of the adjacent lighting fixtures 100 overlap each other, the mounting bracket 60 is displaced to prevent the mounting bracket 60 from interfering with each other, and each lighting fixture 100 can be moved to the T bar without hindrance. 200 can be attached.

  In addition, the bending part 66 gives the reaction force with respect to the force which separates the attachment bracket 60 from the beam part 201 when it is going to lift the lighting fixture 100. FIG. When the inclination angle of the bent portion 66 with respect to the vertical direction is increased, the reaction force is increased. Therefore, it is preferable to set the inclination angle of the bent portion 66 with respect to the vertical direction so that the lighting fixture 100 does not lift up with the upward force applied to the lighting fixture 100 when the lower surface of the diffusion cover 40 is wiped. .

As described above, the luminaire 100 according to this embodiment can be easily attached and detached. For this reason, the arrangement of the lighting fixture 100 can be easily changed in accordance with the purpose of use in the room. Therefore, the luminaire 100 according to the present embodiment is optimal as the luminaire 100 that illuminates a room used for a plurality of different uses such as a multipurpose room.
FIG. 5 is a schematic diagram showing a ceiling layout using the lighting apparatus 100 according to the present embodiment. The ceiling is divided into panel-like spaces by six T bars 200 vertically and horizontally. The lighting fixture 100 and the ceiling material 300 are installed in 36 panel-like spaces.
Since the lighting fixture 100 according to the present embodiment is easy to attach and detach as described above, the arrangement of the lighting fixture 100 can be easily changed according to the usage of the room.
For example, FIG. 5A shows a layout suitable for a case where people want to uniformly illuminate the entire room, for example, when people use the entire room for a meeting.
5B and 5F are layouts suitable for a case where it is desired to illuminate the center of the room intensively, such as when a person gathers in the center of the room for a meeting.
(C), (d), (e), and (g) of FIG. 5 are layouts suitable for cases where the arrangement of the lighting fixtures 100 is made irregular and people are relaxed and used in a chat space.
Since the installation location of the luminaire 100 according to the present embodiment can be easily changed, it is easy to produce a space suitable for the purpose of use of the room by using different installation locations of the luminaire 100 while using the same room.

  As mentioned above, although this invention was demonstrated using the embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications and improvements can be made to the above-described embodiment.

  For example, the number of LED elements and the number of circuit boards 20 described above are examples, and the present invention is not limited to these numbers.

  For example, in the above-described embodiment, the wall portion 64 of the mounting bracket 60 is positioned closer to the lamp unit 1 than the T bar 200, and the bent portion 66, the guide portion 67, and the guide portion 68 are farther from the lamp unit 1 than the T bar 200. However, the present invention is not limited to this. The mounting bracket 60 is configured such that the wall portion 64 is located farther from the lamp unit 1 than the T bar 200 and the bent portion 66, the guide portion 67 and the guide portion 68 are located closer to the lamp unit 1 than the T bar 200. May be.

DESCRIPTION OF SYMBOLS 100: Lighting fixture 1: Lamp unit 1a: Flange part 3: Power supply unit 10: Base plate 20: Circuit board 30: Semiconductor light source unit 40: Diffusion cover 60: Mounting bracket 60A: Lamp mounting part 60B: T-bar mounting part 61: Base Contact portion 62: Flange holding portion 63: Connection portion 64: Wall portion 65: Folding portion 66: Bending portion 67: Guide portion 68: Guide portion 69: Hanging strap fixing portion 70: Long hole portion 71: Fixing screw 200: T Bar 201: Beam part 202: Ceiling material support part 203: Connection part 300: Ceiling member A: Storage space B: Passage S: Lamp room

Claims (3)

A panel-type lighting device installed in a space separated by a support member provided on the ceiling,
An illumination body having a light emitting unit;
An attachment piece fixed to the illumination body and attaching the illumination body to a support member;
The mounting piece is
A wall portion extending vertically,
A folded portion that extends in the horizontal direction so as to surround at least a part of the upper portion of the support member from the upper portion of the wall portion and is folded downward;
A bent portion extending downward while inclining toward the wall portion from the lower portion of the folded portion;
A lead-in part extending downward while inclining away from the lower part of the bent part, and
An accommodation space for accommodating at least a part of the support member is formed between the folded portion and the wall portion,
Between the bent part and the wall part and between the guiding part and the wall part, a passage is formed through which the upper part of the support member is inserted into the accommodating space.
The panel-type lighting fixture which can attach the said illumination main body to the said support member by positioning at least one part of the said support member in the said accommodation space.   The panel-type lighting device according to claim 1, wherein an inclination angle of the guide portion with respect to a vertical direction is smaller than an inclination angle of the bent portion with respect to the vertical direction. The mounting piece is fixed to the lighting body by a fixing screw fitted in a screw hole provided in the lighting body,
The mounting piece has a long hole portion through which the fixing screw is inserted and extends in a direction orthogonal to the insertion direction of the fixing screw,
The panel-type lighting fixture according to claim 1 or 2, wherein the mounting piece can change a relative position with respect to the illumination main body by changing a relative position of the screw hole with respect to the elongated hole portion.

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