JP2009266543A - Planar lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a planar lighting fixture which is attached to an attachment hole of various sizes without any shifting. <P>SOLUTION: Shifting of the planar lighting fixture 10 is prevented by having an inclined surface 25a abutted to the attachment hole 12 when the planar lighting fixture 10 is attached to the attachment hole 12 by an attaching section 30 on a back surface 21a of a planar light-emitting section 21 in a case when size d of the attachment hole 12 is smaller than the size D2 of an outer side end of the inclining surface 25a of the planar light-emitting section 21 and greater than the size D1. Furthermore, when the size d is smaller than the size D1, although discharge of heat is bad and the temperature of the planar lighting fixture 10 is made high, since the periphery edge section of the attachment hole 12 is abutted to the back surface 21a of the planar light-emitting section 21 and attached afloat, discoloring due to heat in an attached member such as a ceiling 11 is prevented. Meanwhile, when the size d is greater than the size D2, discharging property is great and discoloring due to heat in the attached member such as the ceiling 11 is prevented and since a flat section 25b on the outer side of the inclining surface 25a is brought into contact with the attached member such as the ceiling 11, the appearance is improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a planar lighting fixture that is fitted into a mounting hole provided in a ceiling or the like.

  2. Description of the Related Art Conventionally, there has been proposed a blindfold plate for improving the appearance by closing attachment holes of various sizes after removing a lighting fixture or the like attached to a ceiling or the like (see, for example, Patent Document 1).

As shown in FIG. 4, the mounting hole concealment plate 100 described in Patent Document 1 has a plate body 101 having a size larger than that of the mounting hole provided in the ceiling plate, and the lower surface side of the peripheral end of the mounting hole It is used so as to close the mounting hole in contact with. For this reason, a protrusion 102 that can be inserted into the mounting hole is provided on the back surface of the plate main body 101, and an attachment spring 103 that sandwiches the peripheral end of the mounting hole of the ceiling plate between the protrusion 102 and the plate main body 101. Was provided.
JP-A-8-180725 (FIG. 1)

By the way, when a lighting fixture provided on the ceiling or the like is removed and a new lighting fixture is installed, the inner diameter of the mounting hole varies depending on the lighting fixture that was previously attached, and the lighting fixture that is newly attached Is smaller than the mounting hole, it is necessary to use a blindfold plate that covers the gap between the luminaire and the mounting hole. For example, it is conceivable to attach the blindfold plate 100 described in Patent Document 1 in an annular shape outside the lighting fixture.
However, in the blindfold plate 100, the ceiling plate is sandwiched between the plate body 101 by the mounting spring 103 and is only held by the frictional force between the plate body 101 and the ceiling plate. There was a problem that there was a risk of the lighting fixtures shifting.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a planar lighting fixture that can be mounted so as not to shift to mounting holes of various sizes.

  The planar lighting fixture of the present invention includes a fixture main body having a planar light emitting unit having a light source and a power feeding unit provided on the back surface of the planar light emitting unit, and the power feeding unit provided on the back surface of the planar light emitting unit. A planar lighting fixture having a mounting portion that is inserted into a mounting hole and installs the fixture main body in the mounting hole, in the vicinity of the outer edge portion of the back surface of the planar light emitting portion, from the outer edge portion to the central portion. It has the structure in which the inclined surface which becomes high toward is provided.

  With this configuration, when the size of the mounting hole is smaller than the size of the outer end of the inclined surface provided in the planar light emitting unit and larger than the size of the inner end of the inclined surface, the planar light emitting unit When the surface lighting device is attached to the mounting hole by the installation part provided on the back surface of the glass, the inclined surface abuts the mounting hole, so that the surface lighting device can be positioned and prevented from shifting. Can do. In addition, when the size of the mounting hole is smaller than the size of the inner end of the inclined surface, the heat dissipation condition is poor and the temperature of the surface lighting device is high, but the peripheral portion of the mounting hole is the back surface of the planar light emitting unit. Since it is attached in a floating state, it is possible to prevent the attachment member such as the ceiling from being discolored by heat. On the other hand, when the size of the mounting hole is larger than the size of the outer end of the inclined surface, heat dissipation is high and it is possible to prevent the mounting member such as the ceiling from being discolored by heat and Since the flat part outside the inclined surface on the back surface contacts an attachment member such as a ceiling, the appearance can be improved. Thereby, a planar illuminating device can be appropriately attached to attachment holes of various sizes.

  Moreover, the planar lighting fixture of this invention has the structure which provided the some slipper in the center side rather than the said inclined surface in the back surface of the said planar light emission part.

  With this configuration, when the size of the mounting hole is smaller than the size of the inner end of the inclined surface, the displacement stopper provided on the back surface of the planar light emitting unit comes into contact with the inner peripheral surface of the mounting hole, thereby It is possible to prevent the luminaire from shifting.

  When the size of the mounting hole is smaller than the size of the outer end of the inclined surface provided in the planar light emitting unit and larger than the size of the inner end of the inclined surface, the planar light emitting unit When the surface lighting device is attached to the mounting hole by the installation part provided on the back surface of the glass, the inclined surface abuts the mounting hole, so that the surface lighting device can be positioned and prevented from shifting. Can do. In addition, when the size of the mounting hole is smaller than the size of the inner end of the inclined surface, the heat dissipation condition is poor and the temperature of the surface lighting device is high, but the peripheral portion of the mounting hole is the back surface of the planar light emitting unit. Since it is attached in a floating state, it is possible to prevent the attachment member such as the ceiling from being discolored by heat. On the other hand, when the size of the mounting hole is larger than the size of the outer end of the inclined surface, heat dissipation is high and it is possible to prevent the mounting member such as the ceiling from being discolored by heat and Since the flat part outside the inclined surface on the back surface contacts an attachment member such as a ceiling, the appearance can be improved. Thereby, the planar lighting fixture which has the effect that a planar lighting fixture can be appropriately attached to the attachment hole of various magnitude | sizes can be provided.

Hereinafter, the planar lighting fixture concerning 1st Embodiment of this invention is demonstrated using drawing.
1A is a plan view of a planar lighting device according to an embodiment of the present invention as seen from the back side, FIG. 1B is a cross-sectional view and an end view, and FIG. 2 is a cross-sectional view showing a state in which it is attached to a small mounting hole. FIG. 3 is an end view, and FIG. 3 is a cross-sectional view and an end view showing a state of being attached to a large mounting hole.

  As shown in FIGS. 1 (A) and 1 (B), the planar lighting device 10 is mounted by being inserted into a mounting hole 12 provided in a mounting member such as a ceiling 11. And the instrument main body 20 which has the electric power feeding part 22 provided in the back surface 21a of this planar light emission part 21, and the installation part 30 which installs the instrument main body 20 in the attachment hole 12 are provided.

  The planar light emitting unit 21 has a circular planar light emitting unit main body 23 in which the power supply unit 22 is attached to the upper surface which is the back surface 21a of the planar light emitting unit 21 and the LED 24 which is a light source is mounted downward. A cover member 25 that covers the front surface and the outside of the light emitting unit main body 23 is provided.

  A cover such as a lens 24a is attached to the cover member 25 so as to correspond to the front (downward) of the LED 24 mounted on the planar light emitting unit main body 23, and is integrated with the lower surface of the planar light emitting unit main body 23 by screws 26. Installed. The cover member 25 can hide the gap between the instrument body 20 and the attachment hole 12 when the instrument body 20 is attached to the attachment hole 12, and is formed larger than the attachment hole 12. Has been. The lower surface of the screw 26 is hidden by the decorative screw 26a to improve the appearance.

  In addition, an inclined surface 25a that is inclined downward from the vicinity of the outer edge portion of the planar light emitting unit main body 23 toward the outside is provided on the back surface side of the cover member 25 serving as the back surface 21a of the planar light emitting unit 21. On the outside of the surface 25a, a flat surface 25b is formed in an annular shape with a constant width. The upper end (that is, the inner end) of the inclined surface 25a is a circle having a diameter D1, and the lower end (that is, the outer end and the boundary with the flat surface 25b) of the inclined surface 25a is a circle having a diameter D2.

  On the back surface 21a of the planar light emitting portion 21, a narrow plate material 27 is attached to the upper surface of the planar issuer body 23, and both end portions of the plate material 27 are bent upward to form a plurality of (here, a pair) shifts. A stop 27a is formed. The interval (diameter) of the stoppers 27a is smaller than the inner diameter d of the mounting hole 12, and is for preventing the planar lighting fixture 10 from being displaced due to contact with the inner peripheral surface of the mounting hole 12. . When the mounting hole 12 is circular, at least a pair of detents 27a are provided opposite to each other in the diameter direction. Alternatively, three or more displacement stoppers 27a may be provided on the concentric circles.

  The installation part 30 provided on the back surface 21a (the side opposite to the light irradiation side) of the planar light emitting part 21 is a plurality (four in this case) which are installation members for installing the instrument body 20 in the attachment hole 12. The arm 31 is provided, and the tip 31a of the arm 31 is bent downward. A frame 32a formed by bending a plate member 27 attached to the back surface 21a of the planar light emitting unit 21, and a frame 32b attached to the back surface 21a of the planar light emitting unit 21 at a predetermined distance from the frame 32a. A rotary shaft 33 is provided between them, and each arm 31 is rotatably supported by the rotary shaft 33. A spring 34 is provided around the rotation shaft 33, and each arm 31 is urged to rotate in a direction of pressing the tip 31 a against the back surface 11 a of the ceiling 11 by the elastic force of the spring 34.

  Accordingly, due to the reaction of the elastic force of the spring 34 that presses the tip 31a of the arm 31 against the ceiling 11, the instrument body 20 is lifted upward and pressed against the mounting hole 12 from below.

  Therefore, as shown in FIGS. 1A and 1B, the size (inner diameter here) d of the mounting hole 12, the inner end size (here radius) D1 of the inclined surface 25a and the outer end When the relationship with the size (here, radius) D2 is D1 ≦ d ≦ D2, that is, the size d (for example, φ125 mm) of the mounting hole 12 is larger than the size D1 of the inner end of the inclined surface. When the size is smaller than the size D <b> 2, the instrument body 20 lifted by the installation portion 30 is positioned by pressing the inclined surface 25 a against the lower end portion of the inner peripheral surface of the mounting hole 12.

  On the other hand, as shown in FIG. 2, when the size d (for example, φ100 mm) of the mounting hole 12 is smaller than the size D1 of the inner end of the inclined surface 25a, that is, when d <D1 <D2, The rear surface 21 a of the planar light emitting unit 21 abuts on the lower surface 11 b of the ceiling 11 that is the outer edge portion of the mounting hole 12. A plurality of stoppers 27b are provided on the back surface 21a of the planar light emitting portion 21, and the inner peripheral surface of the mounting hole 12 abuts against the stoppers 27b, so that the deviation of the planar lighting device 10 is minimized. Can be suppressed.

  Further, as shown in FIG. 3, when the size d (for example, φ150 mm) of the mounting hole 12 is larger than the size D2 of the outer end of the inclined surface 25a, that is, when D1 <D2 <d, The flat surface 25 b of the cover member 25 contacts the lower surface 11 b of the ceiling 11 that is the outer edge portion of the mounting hole 12. Needless to say, when the size of the mounting hole 12 is larger than the outer diameter of the cover member 25, the planar lighting device 10 cannot be mounted.

Next, the attaching / detaching work of the surface lighting device 10 with respect to the mounting hole 12 of the ceiling 11 will be described.
When mounting the planar lighting device 10 in the mounting hole 12, first, the operator lifts the arm 31 of the installation unit 30 upward against the urging force of the spring 34 by hand, and lifts the tip 31 a of the arm 31 to the ceiling. 11 is hooked on the back surface (upper surface) 11a. Then, the hand is released from the arm 31 so that the lighting device 10 is suspended by the tip 31 a of the arm 31, and the lighting device 10 is pushed into the mounting hole 12. Thereby, the arm 31 spreads by the urging force of the spring 34 and supports the lighting device 10.

On the other hand, in order to remove the lighting device 10 attached to the ceiling 11, the outer peripheral portion of the cover member 25 is put on and pulled down. As a result, the arm 31 supporting the lighting device 10 rotates upward against the urging force of the spring 34, so that the tip 31 a of the arm 31 is locked to the back surface 11 a of the ceiling 11. Pulled down. Then, the operator puts his hand between the lighting device 10 and the ceiling 11, rotates the arm 31 upward, removes the tip 31 a of the arm 31 from the back surface of the ceiling 11, and removes the lighting device 10. .

  As described above, according to the illuminating device 10 described above, the size d of the mounting hole 12 is smaller than the size of the outer end of the inclined surface 25a provided in the planar light emitting portion 21, and the inner end of the inclined surface 25a. When the instrument body 20 is attached to the attachment hole 12 by the installation part 30 provided on the back surface 21a of the planar light emitting part 21, the inclined surface 25a comes into contact with the attachment hole 12. The planar lighting device 10 can be positioned and can be prevented from shifting.

  In addition, when the size d of the mounting hole 12 is smaller than the size D1 of the inner end of the inclined surface 25a, the heat dissipation condition is poor and the temperature of the surface lighting device 10 is increased. Is in contact with the rear surface 21a of the planar light emitting portion 21 and is mounted in a floating state, so that it is possible to prevent the mounting member such as the ceiling 11 from being discolored by heat. At this time, it is possible to prevent the planar lighting device 10 from being displaced by the displacement stoppers 27 a provided on the back surface 21 a of the planar light emitting unit 21.

  On the other hand, when the size d of the mounting hole 12 is larger than the size D2 of the outer end of the inclined surface 25a, the heat dissipation is high and it is possible to prevent the mounting member such as the ceiling 11 from being discolored by heat. Since the flat portion 25b outside the inclined surface 25a contacts the mounting member such as the ceiling 11 on the back surface 21a of the planar light emitting portion 21, the appearance can be improved.

In addition, the planar lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, the case where the circular planar lighting device 10 is attached to the circular mounting hole 12 has been described. However, the shape of the mounting hole and the planar lighting device is not limited to a circle, but is a regular polygon. It can be similarly applied to.

(A) is the top view which looked at the planar lighting fixture concerning embodiment of this invention from the back side, (B) is sectional drawing and an end elevation Sectional view and end view showing the state of mounting in a small mounting hole Sectional view and end view showing the state of mounting in a large mounting hole A perspective view of a blindfold plate in a conventional lighting fixture

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Planar lighting fixture 12 Mounting hole 20 Appliance main body 21 Planar light emission part 21a Back surface 22 Feeding part 24 LED (light source)
25a Inclined surface 27a Non-slip 30 Installation section

Claims (2)

An instrument body having a planar light emitting unit having a light source and a power feeding unit provided on the back surface of the planar light emitting unit;
A planar luminaire having a mounting portion provided on the back surface of the planar light emitting portion and mounting the fixture body in the mounting hole by inserting the power feeding portion into the mounting hole;
In the vicinity of the outer edge portion of the back surface of the planar light emitting portion, an inclined surface that increases from the outer edge portion toward the center portion is provided.   The planar lighting device according to claim 1, wherein a plurality of displacement stoppers are provided closer to a center side than the inclined surface on the back surface of the planar light emitting unit.

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