JP6695137B2 - Lighting equipment - Google Patents

Description

  The present invention relates to an embedded lighting device.

  2. Description of the Related Art As a lighting device for homes, offices, and stores, an embedded lighting device that is embedded in a ceiling surface and used is widely used. On the other hand, in recent years, an illumination device using a light emitting element such as an LED (light emitting diode) as a light source in place of a conventional light source such as an incandescent light bulb and a fluorescent lamp has become widespread, and an embedded type using the LED as a light source. Various illumination devices have been proposed (for example, see Patent Documents 1 and 2).

  The lighting device described in Patent Documents 1 and 2 includes a fixing frame that is fitted and fixed in a mounting hole formed in a ceiling surface, and a light source unit that holds a plurality of LEDs side by side vertically and horizontally. It is configured to be detachably attached to a fixed frame. According to this configuration, maintenance work such as cleaning, inspection, and replacement can be performed by removing the light source unit from the fixed frame.

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

  In the lighting device described in Patent Document 1, leaf springs extending outward are attached to a plurality of positions 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, and each plate is attached. It is configured to keep the attached state by the biasing force of the spring. A bent portion is provided at the tip of each leaf spring.When attaching or detaching, the light source unit is pulled downward against the bias of the leaf spring, and each bent portion is engaged with the locking hole. This makes it possible to temporarily fix the light source unit at a position spaced below the fixed frame by using the leaf spring as a support, thereby improving workability.

  Further, in the illuminating device described in Patent Document 2, a holding portion is provided on one side of the light source unit, and a hooking portion is provided on the other side, the hooking portion is hooked on a fixed frame, and the holding portion is held on the fixed frame. By doing so, it is configured to maintain the attached state. At the time of attachment / detachment, the holding of the holding portion is released, and the light source unit can be temporarily fixed in a hanging state with the hanging portion as a fulcrum to improve workability.

Japanese Patent No. 5213988 Japanese Patent No. 5171661

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

  In addition, the lighting device described in Patent Document 2 is premised on an alternative to a lighting device that uses a fluorescent lamp as a light source, and uses a holding portion as a power supply connecting portion, a socket for power supply connection, and a hook. There is a problem in that there is a large design constraint because a hook that locks the part is provided so as to project in the fixed frame. Further, since the holding portion also serves as the power source connecting portion, it is difficult to maintain a stable attached state when a large light source unit is provided.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a lighting device having a simple structure that can achieve both reliable attachment of a light source unit and easy attachment / detachment of the light source unit. ..

A lighting device according to the present invention is a lighting device including 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, wherein the light source unit is on one surface. A rectangular support plate to which the light source is fixed, and a stepped rectangular flat plate-like locking portion that projects outward from one side of the support plate and has a wide tip and a narrow base. The fixed frame includes a holding hole formed in a part of the peripheral wall and having a stepped hole shape in which the upper side is wide and the lower side is narrow , and the light source unit includes the locking portion. It is characterized in that the holding holes are engaged with each other at narrow width portions, and the other side of the support plate is screwed and assembled to the fixing frame.

Further, the locking portion is characterized in that the other side of a plate-like engaging metal fitting, one side of which is fixed to the support plate , is provided so as to project to the outside of the one side .

Further, the engaging fitting is a strip-shaped plate member integrally formed with a rib extending along the length direction .

  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. 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.

FIG. 3 is an external perspective view of the lighting device according to the first embodiment. It is sectional drawing of the illuminating device by the II-II line 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 a 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 locking part and a holding 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 appearance perspective view of the lighting installation concerning an embodiment.

(Embodiment 1)
FIG. 1 is an external perspective view of the lighting device according to the first embodiment, and FIG. 2 is a cross-sectional view of the lighting device taken along 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 body 11 that covers a small opening on one side of the frame body 10. The lid 11 is in the shape of a rectangular box with a bottom, and is attached with its opening side aligned with the small opening of the frame body 10. On the other hand, on the other side of the frame body 10, there is provided a brim 12 that projects outward from the large opening on the same side.

  The frame body 10 and the lid body 11 are, for example, bend-formed products of galvanized steel sheet having excellent corrosion resistance, and at least the inner surface of the frame body 10 including the surface of the brim 12 is coated with white paint to achieve high light reflection. It is structured so as to obtain the sex.

  A power supply box 13 containing a power supply circuit and a dimming circuit is attached to the inner surface of the bottom plate of the lid body 11. Further, the bottom plate of the lid body 11 is formed with two fixing holes 14 and a power supply port 15 penetrating both sides of the power supply box 13 at positions appropriately separated from each other, and further on the inner surface near the power supply port 15. A power supply 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 wide rectangular portion on the bottom plate side and a narrow narrow portion on the opening side are continuous through steps on both sides in the width direction, and the length of the peripheral wall is long. It is arranged on both sides of the central portion in the vertical direction.

  The fixed frame 1 configured as described above is separately installed inside the ceiling 3 by fitting it into the mounting hole 30 formed in the ceiling 3 with the lid 11 side facing upward, as shown by the chain double-dashed line in FIG. Anchor bolts (not shown) are passed through the fixing holes 14, and nuts screwed into the anchor bolts are fastened to the bottom plate of the lid body 11 to be fixed.

  By this fixing, the large opening of the frame main body 10 faces downward, and the brim 12 that borders the large opening has a function of covering the peripheral edge of the mounting hole 30 over an appropriate width. The frame body 10 and the lid body 11 are located inside the ceiling 3 with the lid body 11 facing upward, and the holding holes 18 formed in the peripheral wall of the lid body 11 are positioned with the wide portion up and the narrow 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 the 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 and having a length corresponding to the short side of the support plate 20 and formed in an arch shape, and has a light transmitting property and a light diffusing property.

  The three diffusion covers 21 are arranged along the short sides of the support plate 20 in the longitudinal direction, and are arranged side by side at appropriate intervals on the central portion and both sides of the support plate 20, and between the respective diffusion covers 21. A reflector 22 is arranged on the above. The reflection plate member 22 has a mountain-like shape having a length corresponding to the short side of the support plate 20, and is fixed to the support plate 20 with the top facing outward so as to fill the gap between the diffusion covers 21.

  The support plate 20 and the reflection plate 22 are configured, for example, by coating the surface of a galvanized steel plate with white paint so that a high light reflectance can be obtained.

  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, directly or by the support plate 20 and the reflection. After being reflected by the plate 22, the light is emitted to the front side of the support plate 20.

  The light source unit 2 as described above includes two engaging 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 as seen from the back surface side of the support plate 2, showing the attachment state of the engagement fitting 4.

  As shown in FIG. 5, the engaging fitting 4 is formed by bending a strip-shaped flat plate into a crank shape at an intermediate portion in the length direction, and has a long fixing portion 40 extending to one side of the bending portion and another side. And a short locking portion 41 extending to the.

  The fixing portion 40 is formed with fixing holes 42, 42 penetrating through two locations spaced apart in the length direction, and ribs 43, 43 extending along the length direction on both sides in the width direction of these 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 width portion on the base end side continuous with the bent portion and a wide width portion on the tip end side. In the figure, the base end portion of the locking portion 41 is cut out on both sides in the width direction to form a narrow width portion, and the remaining portion is a wide width portion. However, the tip end portion is expanded to both width direction sides. To form a wide portion.

  The engaging fitting 4 as described above can be manufactured at a low cost by a single molding process including punching of the outer shape, bending, and formation of the fixing holes 42, 42 and the ribs 43, 43. The engaging fitting 4 may be made of a steel plate which is inexpensive and easy to process, but taking corrosion resistance into consideration, it is desirable to make the same as the galvanized steel plate as the fixing frame 1 and the support plate 20 of the light source unit 2. ..

  As shown in FIG. 5, a back rib 24 for bending and strengthening is provided along the peripheral edge on the back surface of the support plate 20 to which the engaging fitting 4 is attached. The two engaging fittings 4 are provided with a fixing portion 40 on the back surface of the support plate 20 inside the back rib 24 along the short side on one side, and by the set screws 44 and 44 which are passed through the fixing holes 42 and 42, respectively. It is fixed to the support plate 20 and is arranged on both sides of the center of the short side. The engaging portion 41 of the engaging fitting 4 projects outward beyond the back rib 24 at that position, and in FIG. 4, the engaging portions 41, 41 of the two engaging fittings 4, 4 have protruding portions. It is shown.

  The fixing positions of the engaging 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 engaging fitting 4 is the shape of the holding hole 18. It corresponds to. 7A and 7B are explanatory views 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, respectively.

  As described above, the locking portion 41 is a stepped rectangular flat plate having a narrow portion on the base end side and a wide portion on the tip end side, and the holding hole 18 is the wide portion positioned on the upper side by the above-mentioned attachment. And a stepped hole having a narrow portion located on the lower side. As shown in FIG. 7, the width of the narrow portion of the locking portion 41 is X, the width of the wide portion is Y, the width of the narrow portion of the holding hole 18 is N, and the width of the wide portion is M. In this case, the locking portion 41 and the holding hole 18 are dimensioned so that the size 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 base end side is held. By dropping it into the narrow portion below the hole 18, it can be engaged so as not to slip out of the holding hole 18.

  Further, two fixing holes 25, 25 are formed through the support plate 20 on the outer side of the back rib 24 along the short side on the other side. These fixing holes 25, 25 are also shown in FIG. 4, and are arranged separately on both sides of the central portion of the short side.

  Reference numerals 21a in FIG. 6 denote engaging claws provided on the respective cover members 21, and the cover member 21 engages the respective engaging claws 21a with engaging holes provided at corresponding positions of the support plate 20. By doing so, it is detachably attached to the support plate 20. Reference numeral 23a in FIG. 6 denotes a connection terminal provided 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 engaging portions 41, 41 of the engaging fittings 4, 4 protruding to one side of the support plate 20 are provided in the holding holes 18, 18 provided in the lid 11 of the fixed frame 1. By engaging and fixing the other side of the support plate 20 to the frame body 10 with the set screws 26, 26 which 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 views of the procedure for attaching the light source unit 2. When mounting the light source unit 2, first, one side of the support plate 20 provided with the engaging metal fittings 4 and 4 is aligned with one side of the fixed frame 1 provided with the holding holes 18 and 18, and the metal fittings are fixed. The locking portions 41, 41 of 4, 4 are engaged with the holding holes 18, 18. The locking portion 41 and the holding hole 18 have a wide portion and a narrow portion that are dimensioned as described above, and the wide portion on the distal end side of the locking portion 41 is inserted into the wide portion above the holding hole 18. After that, the narrow-width portion on the base end side of the locking portion 41 is dropped into the narrow-width portion below the holding hole 18, so that the narrow-width portions are engaged with each other. The engaging portion 41 thus engaged cannot be removed from the holding hole 18 by the action of the wide portion on the tip side.

  As shown in FIG. 8, the light source unit 2 after this engagement can be temporarily fixed in a posture in which it is suspended downward by its own weight, with the engagement metal fittings 4 and 4 as a support. It is possible to perform a connecting operation for connecting the power supply 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 the respective connectors at the tips.

  After the connection work is completed, 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 body 10 with the setscrews 26, 26, which are respectively passed through, they are attached as shown in FIG. The light source 23 included in the light source unit 2 emits light by power supply from the power supply box 13, and the emitted light is diffused by the cover member 21 and reflected by the support plate 20 and the reflection plate 22 and emitted downward from the large opening of the frame body 10. The interior is illuminated.

  The light source unit 2 mounted as described above covers the small opening of the frame body 10 of the fixed frame 1 over the entire surface, and there is no protruding portion in the fixed frame 1. As a result, it is possible to provide an illuminating device that has few design restrictions and has a good appearance.

  The light source unit 2 can be removed by a procedure reverse to the above-described procedure when performing maintenance work such as cleaning, inspection, and replacement. Even at this time of removal, the light source unit 2 does not engage the fittings 4 and 4. It can be temporarily fixed as a support, and the worker can perform the disconnection work 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, so that the temporary fixing described above is performed. The state can be realized and the light source unit 2 can be easily attached and detached.

  The ribs 43, 43 provided on the engaging metal fitting 4 enhance the bending deformation strength of the engaging metal fitting 4 in the thickness direction, and ensure the temporary fixing state and the one-sided support of the light source unit 2 after the attachment. Make an action.

(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 narrowed downward. In the holding hole 18 shown in FIG. 10B, an arcuate chamfered portion 18b is formed at a corner between the upper wide portion and the lower narrow portion.

  In these holding holes 18, the tapered portion 18a and the chamfered portion 18b have a guiding function when the locking portions 41 inserted into the respective wide portions are dropped into the narrow portions, and are engaged when the light source unit 2 is attached or detached. The engagement and disengagement of the stopper 41 can be easily performed.

(Embodiment 3)
FIG. 11 is a perspective view showing another embodiment of the engagement fitting 4. In this engagement fitting 4, two ribs 43, 43 provided on the fixed portion 40 are extended to the locking portion 41 via a bent portion. With this configuration, the bending strength of the locking portion 41 can be increased by the action of the ribs 43, 43, and the one-sided support of the light source unit 2 in the temporarily fixed state described above can be made more reliable. The ribs 43, 43 are not limited to be formed in the manner shown in FIGS. 5 and 11, but may be formed in any suitable manner including the shape and the number of ribs.

(Embodiment 4)
FIG. 12 is an external perspective view of the lighting device according to the fourth embodiment. This illuminating device includes a small light source unit 2 having two diffusion covers 21 and 21 arranged in parallel on one surface (front surface) of a rectangular support plate 20 and a reflection plate 22 mounted between them. . The light source unit 2 is provided with a single engaging metal fitting 4 attached to the central portion of one edge of the support plate 20, and a locking portion 41 protruding from the one edge is provided 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 by the set screws 26, 26 to form an illuminating device.

In this way, it is possible to configure the same illumination device by changing the sizes of the fixed frame 1 and the light source unit 2 .

The illuminating device according to the embodiment described above is a illuminating device including the fixed frame 1 fitted and fixed to the ceiling surface, and the light source unit 2 that holds the light source 23 and is detachably assembled to the fixed frame 1. The light source unit 2 has a rectangular support plate 20 having a light source 23 fixed to one surface thereof, and a step which is outwardly projected from one side of the support plate 20 and has a wide front end and a narrow base. The fixed frame 1 is formed in a part of the peripheral wall and has a stepped hole-shaped holding hole 18 having a wide upper side and a narrow lower side. The light source unit 2 has the locking portions 41 engaged with the holding holes 18 at respective narrow width portions, and the other side of the support plate 20 is screwed to the fixed frame 1 to be assembled. is there.

In the fixed frame 1 and the light source unit 2, the locking portion 41 protruding from one side of the support plate 20 of the light source unit 2 is engaged with the holding hole 18 provided in a part of the peripheral wall of the fixed frame 1 to support the support plate. The other side of 20 is fixed and assembled to the frame body 10 of the fixed frame 1 with a set screw 26 . Light source unit 2 can be temporarily fixed at a position depending from the fixed frame 1 downward by a simple construction to support the engagement portion of the locking portion 41 and the holding hole 18, to easily implement attached and detached You can

Holding hole 18, the upper and wide, to name a stepped hole shape having a narrow lower engaging portion 41, a distal end portion and wide, the rectangular plate-shaped stepped was narrow a base Eggplant The locking portion 41 and the holding hole 18 are formed by a simple procedure of inserting the wide portion of the locking portion 41 into the wide portion of the holding hole 18 and dropping the narrow portion of the locking portion 41 into the narrow portion of the holding hole 18. The narrow width portions can be reliably engaged with each other.

Further, the locking portion 41 is provided by projecting the other side of the plate-like engagement fitting 4 having one side fixed to the support plate 20 to the outside of the one side .

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

The engagement fitting 4 is a strip-shaped plate member integrally formed with a rib 43 extending along the length direction .

  The bending strength of the engaging fitting 4 is increased by the action of the ribs 43, so that the temporarily fixed state of the light source unit 2 can be reliably maintained and the supporting strength of one side of the light source unit 2 after attachment 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 of 41 is smaller than the width N of the narrow portion of the holding hole 18.

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

  It should be understood that the embodiments disclosed this time are exemplifications in all points and not restrictive. The scope of the present invention is not defined by the above meaning but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

1 Fixed Frame 2 Light Source Unit 4 Engaging Metal Fitting 18 Holding Hole 23 Light Source 41 Locking Part 43 Rib

Claims (4)

In a lighting device including 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 has a rectangular support plate having a light source fixed to one surface, and a stepped rectangular flat plate projecting outward from one side of the support plate and having a wide tip and a narrow base. And a locking portion forming
The fixed frame is formed in a part of the peripheral wall, and has a holding hole in the form of a stepped hole having a wide upper side and a narrow lower side ,
The lighting device is characterized in that the light source unit is assembled by engaging the locking portions with the holding holes at respective narrow width portions and screwing the other side of the support plate to the fixing frame. The locking portion includes an illumination device according to claim 1, characterized in that the other side of the plate-like engagement alloy tool fixing the one side to the support plate is provided so as to protrude to the outside of the one side. The lighting device according to claim 2 , wherein the engagement fitting is a strip-shaped plate member integrally formed with a rib extending along a length direction. 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,
The width of the narrow width portion of the locking unit, the lighting device according to any one of claims 1 to 3, characterized in that are smaller than the width of the narrow width portion of the holding hole.

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