JP2017112013A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire capable of achieving both secure mounting of a light source unit and easy attachment/detachment of the light source unit by a simple structure.SOLUTION: A luminaire includes a fixed frame 1 which is fitted in a ceiling surface and fixed, and a light source unit 2 for holding a light source and assembled to the fixed frame 1 in a detachable manner. The light source unit 2 includes a stepped tabular locking part 41 which protrudes outwardly from one part of a circumference, and in which a tip part is wide. The fixed frame 1 includes a stepped hole-shaped holding hole 18 in which the upper side is wide and the lower side is narrow, at one part of a peripheral wall. The light source unit 2 is assembled to the fixed frame 1, by the wide portion of the locking part 41 being inserted in the wide portion of the holding hole 18, and the narrow portion of the locking part 41 being dropped in the narrow portion of the holding hole 18.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an embedded illumination device.

  As illumination devices for houses, offices, and stores, embedded illumination devices that are used by being embedded in a ceiling surface are widely used. On the other hand, in recent years, instead of conventional light sources such as incandescent bulbs and fluorescent lamps, lighting devices using light emitting elements such as LEDs (light emitting diodes) as light sources have been spreading, and embedded types using LEDs as light sources are becoming popular. Various illumination devices have also been proposed (see, for example, Patent Documents 1 and 2).

  The illuminating devices described in Patent Literatures 1 and 2 include a fixed frame that is fitted and fixed in a mounting hole provided on a ceiling surface, and a light source unit that holds a plurality of LEDs arranged vertically and horizontally. It is configured to be detachably attached to the fixed frame. According to this configuration, by removing the light source unit from the fixed frame, maintenance work such as cleaning, inspection, and replacement can be performed.

  On the other hand, when attaching or detaching the light source unit, it is necessary to support the light source unit from the bottom near the ceiling surface and to perform various operations including connection to or disconnection from the power supply unit provided on the fixed frame. There is a problem that is bad.

  In the illumination device described in Patent Document 1, leaf springs extending outward are attached to a plurality of locations on the periphery of the light source unit, and these leaf springs are respectively inserted into locking holes provided at corresponding positions of the fixed frame. The mounting state is maintained by the biasing force of the spring. Each leaf spring has a bent portion at the tip, and when attaching or detaching, the light source unit is pulled down against the bias of the leaf spring, and each bent portion is engaged with the locking hole. Thus, it is possible to temporarily fix the light source unit at a position separated below the fixed frame with the leaf spring as a support, thereby improving workability.

  In the illumination device described in Patent Document 2, a holding part is provided on one side of the light source unit, and a latching part is provided on the other side, the latching part is latched on the fixed frame, and the holding part is held on the fixed frame. It is comprised so that an attachment state may be maintained by doing. When attaching and detaching, the holding portion is released, and the light source unit can be temporarily fixed in a state where it hangs down with the hook portion as a fulcrum, thereby improving workability.

Japanese Patent No. 5213898 Japanese Patent No. 5171661

  However, in the illuminating device described in Patent Document 1, a long leaf spring provided with a plurality of bent portions is used in order to realize the attached state and the temporarily fixed state. It is difficult to design and manufacture an appropriate leaf spring that balances ease, and the product cost may increase.

  Moreover, the illumination device described in Patent Document 2 is based on the premise that the illumination device uses a fluorescent lamp as a light source, and uses the holding portion as a power supply connection portion. There is a problem in that the hook for latching the portion protrudes in the fixed frame, and there is a great design restriction. In addition, since the holding portion also serves as the power supply connecting portion, when a large light source unit is provided, there is a problem that it is difficult to maintain a stable attachment state.

  This invention is made | formed in view of such a situation, and it aims at providing the illuminating device which can make a reliable attachment of a light source unit and the ease of attachment or detachment of a light source unit compatible by simple structure. .

  An illuminating device according to the present invention includes: a fixed frame that is fitted and fixed to a ceiling surface; and a light source unit that holds a light source and is detachably assembled to the fixed frame. The fixing frame has a holding hole formed in a part of the peripheral wall, and the light source unit engages the locking part with the holding hole. And being assembled to the fixed frame.

  Further, the locking portion has a stepped plate shape with a wide end portion and a narrow base portion, and the holding hole has a stepped hole shape with a wide upper side and a narrow lower side. The locking portion and the holding hole are engaged with each other at a narrow width portion.

  Further, the engaging portion is provided by projecting the other side of the plate-shaped engagement fitting having one side fixed to the light source unit to the outside of the peripheral edge.

  The engagement fitting is a plate-like member integrally formed with a bending reinforcement rib.

  Further, the width of the wide portion of the locking portion is smaller than the width of the wide portion of the holding hole and larger than the width of the narrow portion of the holding hole, and the width of the narrow portion of the locking portion. Is smaller than the width of the narrow portion of the holding hole.

  In the present invention, reliable attachment of the light source unit and easy attachment / detachment of the light source unit can be realized with a simple configuration.

1 is an external perspective view of a lighting device according to Embodiment 1. FIG. It is sectional drawing of the illuminating device by the II-II line | wire in FIG. It is a perspective view of a fixed frame. It is a perspective view of a light source unit. It is a perspective view of an engagement metal fitting. It is the perspective view of the light source unit seen from the back side of the support plate. It is explanatory drawing of the correspondence of a latching | locking part and a holding | maintenance part. It is explanatory drawing of the attachment procedure of a light source unit. It is explanatory drawing of the attachment procedure of a light source unit. It is explanatory drawing which shows other embodiment of a holding hole. It is a perspective view which shows other embodiment of an engagement metal fitting. It is an external appearance perspective view of the illuminating device which concerns on embodiment.

(Embodiment 1)
1 is an external perspective view of the lighting apparatus according to Embodiment 1, and FIG. 2 is a cross-sectional view of the lighting apparatus taken along the line II-II in FIG. As shown in FIG. 1, the lighting device includes a fixed frame 1 and a light source unit 2 attached to the fixed frame 1.

  FIG. 3 is a perspective view of the fixed frame 1. As shown in the figure, the fixed frame 1 includes a rectangular frame body 10 that expands in a tapered shape from one side to the other side, and a lid 11 that covers a small opening on one side of the frame body 10. The lid 11 has a bottomed rectangular box shape, and is attached so that the opening side is aligned with the small opening of the frame body 10. On the other hand, on the other side of the frame main body 10, a collar 12 that protrudes outward from the large opening on the same side is provided.

  The frame body 10 and the lid body 11 are, for example, bent products of galvanized steel plates with excellent corrosion resistance, and at least the inner surface of the frame body 10 is coated with a white paint including the surface of the flange 12 to provide high light reflection. It is configured to obtain the characteristics.

  A power supply box 13 containing a power supply circuit and a light control circuit is attached to the inner surface of the bottom plate of the lid 11. Further, the bottom plate of the lid 11 is formed with two fixing holes 14 and a power supply port 15 penetrating positions that are separated from each other by an appropriate length on both sides of the power supply box 13, and on the inner surface near the power supply port 15. A power terminal block 16 and a dimming terminal block 17 are installed.

  On the other hand, two holding holes 18 are formed through the peripheral wall on one side of the lid 11. These holding holes 18 are in the form of stepped holes in which a rectangular wide portion on the bottom plate side and a rectangular narrow portion on the opening side are connected via steps on both sides in the width direction. It is distributed and arranged on both sides of the central portion in the vertical direction.

  The fixed frame 1 configured as described above is fitted into the mounting hole 30 provided in the ceiling 3 with the lid 11 facing upward as shown by a two-dot chain line in FIG. An anchor bolt (not shown) is passed through the fixing hole 14, and a nut screwed into the anchor bolt is fastened to the bottom plate of the lid 11 to be fixed.

  By this fixing, the large opening of the frame body 10 faces downward, and the flange 12 that borders the large opening acts to cover the periphery of the attachment hole 30 over an appropriate width. The frame main body 10 and the lid body 11 are located inside the ceiling 3 with the lid body 11 up, and the holding holes 18 formed in the peripheral wall of the lid body 11 are located with the wide width portion up and the narrow width portion down. .

  FIG. 4 is a perspective view of the light source unit 2. The light source unit 2 includes three diffusion covers 21 attached to one surface (front surface) of a rectangular support plate 20. The shape and size of the support plate 20 correspond to the small opening of the frame body 10. The diffusion cover 21 is a hollow member made of a resin material having a length corresponding to the short side of the support plate 20 and formed in an arch shape, and has translucency and light diffusibility.

  The three diffusion covers 21 have their longitudinal directions along the short sides of the support plate 20, and are arranged in parallel at appropriate intervals on the center and both sides of the support plate 20. Is provided with a reflection plate 22. The reflection plate material 22 has a length corresponding to the short side of the support plate 20 and is formed in a mountain shape, and is fixed to the support plate 20 with the top facing outward so as to fill the gap between the diffusion covers 21.

  Note that the support plate 20 and the reflection plate 22 are configured so that, for example, the surface of a galvanized steel plate is coated with a white paint to obtain a high light reflectance.

  As shown in FIG. 2, a plurality of light sources 23 configured by mounting a plurality of LEDs on a substrate are fixed to one surface of the support plate 20. The cover member 21 is attached so as to surround the fixed portion of each light source 23, and the light emission of the light source 23, more specifically, the light emission of each LED is diffused by the cover member 21, and directly or directly or the support plate 20 and the reflection plate. The light is emitted to the front side of the support plate 20 through reflection by the plate 22.

  The light source unit 2 as described above includes two engagement fittings 4 and 4 attached to the back surface of the support plate 20. FIG. 5 is a perspective view of the engagement fitting 4, and FIG. 6 is a perspective view of the light source unit 2 viewed from the back side of the support plate 2.

  As shown in FIG. 5, the engagement metal fitting 4 is formed by bending a rectangular flat plate into a crank shape in the middle in the length direction, a long fixed portion 40 extending to one side of the bent portion, and the other side. And a short locking portion 41 extending in the direction.

  The fixing portion 40 is formed with fixing holes 42, 42 penetrating through two places separated in the length direction, and ribs 43, 43 extending along the length direction on both sides in the width direction of the fixing holes 42, 42. Is formed including the bent portion. On the other hand, the locking portion 41 has a stepped rectangular flat plate shape having a narrow portion on the base end side continuous with the bent portion and a wide portion on the distal end side. In the figure, the base end portion of the locking portion 41 is notched on both sides in the width direction to form a narrow width portion, and the remaining portion is a wide width portion, but the tip portion is extended to both sides in the width direction. Wide portions may be formed.

  The engagement metal fitting 4 as described above can be manufactured at a low cost by a single molding process including the punching of the outer shape, the bending molding, and the formation of the fixing holes 42 and 42 and the ribs 43 and 43. The engagement metal fitting 4 may be made of a steel plate that is inexpensive and easy to process, but it is preferable that the engagement metal fitting 4 is made of a galvanized steel plate similar to the support plate 20 of the fixed frame 1 and the light source unit 2 in consideration of corrosion resistance. .

  As shown in FIG. 5, a back rib 24 for bending reinforcement is provided along the periphery on the back surface of the support plate 20 to which the engagement metal fitting 4 is attached. The two engagement fittings 4 are fixed to the back surface of the support plate 20 on the inner side of the back rib 24 along the short side of one side, and set screws 44, 44 passed through the fixing holes 42, 42, respectively. It is fixed to the support plate 20 and is arranged on both sides of the central portion of the short side. The engaging part 41 of the engaging metal fitting 4 protrudes outward beyond the back rib 24 at the position. In FIG. 4, the protruding parts of the engaging parts 41 and 41 of the two engaging metal parts 4 and 4 are shown. It is shown.

  The fixing positions of the engagement fittings 4 and 4 correspond to the positions of the holding holes 18 and 18 provided in the fixing frame 1, and the shape of the locking portion 41 of each engagement fitting 4 is the shape of the holding hole 18. It corresponds to. FIG. 7 is an explanatory diagram of the correspondence relationship between the locking portion 41 and the holding hole 18, FIG. 7A shows the planar shape of the locking portion 41, and FIG. 7B shows the planar shape of the holding hole 18.

  As described above, the locking portion 41 is a stepped rectangular flat plate having a narrow end portion on the base end side and a wide end portion on the distal end side, and the holding hole 18 is a wide width portion positioned on the upper side by the attachment described above. And a stepped hole having a narrow portion located on the lower side. As shown in FIG. 7, the width dimension of the narrow portion of the locking portion 41 is X, the width dimension of the wide portion is Y, the width dimension of the narrow portion of the holding hole 18 is N, and the width dimension of the wide portion is M. In this case, the size of the locking portion 41 and the holding hole 18 is set so that a magnitude relationship of M> Y> N> X is obtained.

  Accordingly, the locking portion 41 can be inserted into the holding hole 18 by passing the wide portion on the distal end side through the wide portion on the upper portion of the holding hole 18, and after this insertion, the narrow portion on the proximal end side is held. By dropping into the narrow part at the bottom of the hole 18, it is possible to engage the holding hole 18 so that it cannot be pulled out.

  The support plate 20 is formed with two fixing holes 25, 25 penetrating outside the back rib 24 along the other short side. These fixing holes 25, 25 are also shown in FIG. 4 and are arranged on both sides of the central portion of the short side.

  In FIG. 6, 21 a is an engaging claw provided on each of the cover members 21, and the cover member 21 engages each engaging claw 21 a with an engaging hole provided at a corresponding position of the support plate 20. By doing so, it is detachably attached to the support plate 20. Further, reference numeral 23a in FIG. 6 denotes a connection terminal included in each of the light sources 23, and each light source 23 can be connected to the power supply box 13 via each connection terminal 23a.

  In the light source unit 2 configured as described above, the locking portions 41 and 41 of the engagement fittings 4 and 4 projecting to one side of the support plate 20 are provided in the holding holes 18 and 18 provided in the lid body 11 of the fixed frame 1. By engaging and fixing the other side of the support plate 20 to the frame body 10 with set screws 26, 26 that are passed through the fixing holes 25, 25, respectively, as shown in FIG. The support plate 20 to which 22 is attached is attached to the fixed frame 1 with the front side facing downward.

  8 and 9 are explanatory diagrams of the attachment procedure of the light source unit 2. When attaching the light source unit 2, first, one side of the support plate 20 provided with the engagement fittings 4, 4 is aligned with one side of the fixed frame 1 provided with the holding holes 18, 18. The engaging portions 41 and 41 of 4 and 4 are engaged with the holding holes 18 and 18. The engaging part 41 and the holding hole 18 have a wide part and a narrow part that are dimensioned as described above, and the wide part on the tip side of the engaging part 41 is inserted into the wide part above the holding hole 18. After that, the narrow portion on the base end side of the locking portion 41 is dropped into the narrow portion below the holding hole 18 so that the narrow portions are engaged with each other. The engaging portion 41 engaged in this way cannot be removed from the holding hole 18 by the action of the wide portion on the tip side.

  After the engagement, as shown in FIG. 8, the light source unit 2 can be temporarily fixed in a posture of hanging downward due to its own weight, with the engagement fittings 4 and 4 being supported. It is possible to perform a connecting operation of connecting the power feeding cable 19 extending from the power supply box 13 and the power receiving cable 27 extending from the connection terminal 23a on the back surface of the support plate 20 via connectors at the respective ends.

  After the completion of this connection work, the light source unit 2 pushes up the other side of the support plate 20 to be received in the frame body 10 of the fixed frame 1 as shown in FIG. By fixing to the frame main body 10 with the set screws 26, 26 passed through each, they are attached as shown in FIG. The light source 23 included in the light source unit 2 emits light by power feeding from the power supply box 13, and the emitted light is emitted downward from the large opening of the frame body 10 through diffusion by the cover member 21 and reflection by the support plate 20 and the reflection plate 22. To illuminate the room.

  The light source unit 2 attached as described above covers the entire small opening of the frame body 10 of the fixed frame 1, and no protruding portion exists in the fixed frame 1. Thereby, there are few restrictions on a design and it can provide a lighting device with good appearance.

  The light source unit 2 can be removed during maintenance work such as cleaning, inspection, replacement, and the like by reversing the above installation procedure. Even in this removal, the light source unit 2 attaches the engagement brackets 4 and 4 to each other. The work can be temporarily fixed as a support, and the operator can perform a connection release operation between the power supply box 13 of the fixed frame 1 and the light source 23 of the light source unit 2 without supporting the light source unit 2.

  In the illuminating device of the embodiment, the fixing frame 1 is provided with the holding hole 18 in the form of a stepped hole, while the light source unit 2 is provided with the stepped flat plate-like locking portion 41 as described above for the temporary fixing. The state can be realized, and the attachment and detachment of the light source unit 2 can be facilitated.

  The ribs 43, 43 provided on the engagement metal fitting 4 enhance the bending deformation strength in the thickness direction of the engagement metal fitting 4, and ensure the above-mentioned temporarily fixed state and the support on one side of the light source unit 2 after the attachment. To act.

(Embodiment 2)
FIG. 10 is an explanatory view showing another embodiment of the holding hole 18. The holding hole 18 shown in FIG. 10A has a shape in which a tapered portion 18a is provided on the side wall of the lower narrow portion, and the narrow portion is reduced in width downward. The holding hole 18 shown in FIG. 10B is formed with an arc-shaped chamfered portion 18b at the corner between the upper wide portion and the lower narrow portion.

  In these holding holes 18, the taper portion 18 a and the chamfered portion 18 b perform a guiding action when the locking portion 41 inserted into each wide width portion is dropped into the narrow width portion. The engagement and disengagement of the stop portion 41 can be easily performed.

(Embodiment 3)
FIG. 11 is a perspective view showing another embodiment of the engagement fitting 4. In this engagement metal fitting 4, two ribs 43, 43 provided on the fixing portion 40 are extended to the locking portion 41 through bent portions. According to this configuration, the bending strength of the locking portion 41 can be increased by the action of the ribs 43, 43, and the support on one side of the light source unit 2 in the temporarily fixed state described above can be made more reliable. In addition, the formation aspect of the ribs 43 and 43 is not restricted to the aspect shown in FIG.5 and FIG.11, A suitable formation aspect including a shape and a number can be employ | adopted.

(Embodiment 4)
FIG. 12 is an external perspective view of a lighting apparatus according to Embodiment 4. This illuminating device includes a small light source unit 2 having two diffusion covers 21, 21 arranged in parallel on one surface (front surface) of a rectangular support plate 20, and a reflection plate 22 attached therebetween. . The light source unit 2 includes a single engagement metal fitting 4 attached to the central portion of one edge of the support plate 20, and the locking portion 41 protruding from the one edge is placed at a corresponding position of the small fixed frame 1. While engaging with the single holding hole 18 provided, the other side of the support plate 20 is fixed to the fixed frame 1 with set screws 26 and 26 to constitute the lighting device.

  In this way, it is possible to configure a similar lighting device by changing the sizes of the fixed frame 1 and the light source unit 2. Moreover, the shape of the fixed frame 1 and the light source unit 2 is not limited to the rectangle shown in the embodiment, and may be an appropriate shape such as a circle or an ellipse depending on the purpose of use.

  The illuminating device according to the embodiment described above is an illuminating device including a fixed frame 1 that is fitted and fixed to a ceiling surface, and a light source unit 2 that holds the light source 23 and is detachably assembled to the fixed frame 1. The light source unit 2 includes a locking portion 41 that protrudes outward from a part of the periphery, and the fixing frame 1 includes a holding hole 18 formed in a part of the peripheral wall. The engaging portion 41 is engaged with the holding hole 18 and assembled to the fixed frame 1.

  The fixed frame 1 and the light source unit 2 are assembled by engaging a locking portion 41 protruding from a part of the peripheral edge of the light source unit 2 with a holding hole 18 provided in a part of the peripheral wall of the fixed frame 1. . As a result, the light source unit 2 can be temporarily fixed in a posture that hangs downward from the fixed frame 1 with a simple configuration that supports the engaging portion of the locking portion 41 and the holding hole 18, and the attachment / detachment operation is easily performed. be able to.

  The locking portion 41 has a stepped plate shape with a wide tip end and a narrow base portion, and the holding hole 18 has a stepped hole shape with a wide upper side and a narrow lower side. The locking portion 41 and the holding hole 18 are engaged with each other at a narrow width portion.

  The holding hole 18 is a stepped hole whose upper side is wide and the lower side is narrow, and the locking portion 41 is a stepped plate shape whose tip is wide and whose base is narrow. The locking part 41 and the holding hole 18 are formed by a simple procedure of inserting the wide part of the locking part 41 into the wide part of the holding hole 18 and dropping the narrow part of the locking part 41 into the narrow part of the holding hole 18. The narrow portions can be reliably engaged with each other.

  Further, the locking portion 41 is provided with the other side of the plate-shaped engagement metal fitting 4 fixed on one side to the light source unit 2 protruding outside the peripheral edge.

  The locking portion 41 can be configured as a fitting 4 that can be easily manufactured as a sheet metal part, including a fixing portion 40 for fixing to the light source unit 2.

  The engagement fitting 4 is a plate-like member integrally formed with a bending reinforcement rib 43.

  The engagement metal fitting 4 has an increased bending deformation strength due to the action of the ribs 43, so that the temporarily fixed state of the light source unit 2 can be reliably maintained, and the support strength of one side of the light source unit 2 can be secured. it can.

  The width Y of the wide portion of the locking portion 41 is smaller than the width M of the wide portion of the holding hole 18 and larger than the width N of the narrow portion of the holding hole 18. The width X of the narrow portion 41 is smaller than the width N of the narrow portion of the holding hole 18.

  By the above dimension setting, the locking portion 41 can be reliably inserted into and dropped from the holding hole 18, and the engagement between both can be realized satisfactorily.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the meanings described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Light source unit 4 Engagement metal fitting 18 Holding hole 23 Light source 41 Locking part 43 Rib

Claims (5)

In a lighting device comprising a fixed frame fitted and fixed to a ceiling surface, and a light source unit that holds a light source and is detachably assembled to the fixed frame,
The light source unit includes a locking portion that protrudes outward from a part of the periphery,
The fixed frame includes a holding hole formed in a part of the peripheral wall,
The illuminating device according to claim 1, wherein the light source unit is assembled to the fixed frame with the engaging portion engaged with the holding hole. The locking portion has a stepped plate shape with a wide end and a narrow base.
The holding hole has a stepped hole shape in which the upper side is wide and the lower side is narrow,
The lighting device according to claim 1, wherein the locking portion and the holding hole are engaged with each other at a narrow width portion.   The lighting device according to claim 2, wherein the locking portion is provided by projecting the other side of the plate-shaped engagement fitting whose one side is fixed to the light source unit to the outside of the peripheral edge.   The lighting device according to claim 3, wherein the engagement fitting is a plate-like member integrally formed with a rib for reinforcing bending. The width of the wide portion of the locking portion is smaller than the width of the wide portion of the holding hole, and larger than the width of the narrow portion of the holding hole,
5. The illumination device according to claim 2, wherein a width of the narrow portion of the locking portion is smaller than a width of the narrow portion of the holding hole.

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