JP7718634B2 - Lighting device and lighting device installation structure - Google Patents

Description

The present invention relates to a lighting device that is placed on the outside of a beam or pillar of a building and an installation structure for the lighting device.

Buildings, including homes, use structural components such as beams and pillars. Beams and pillars often protrude into the interior of the room, which can create a feeling of oppression for those inside and make the room feel smaller.

Indirect lighting fixtures are sometimes installed on beams to eliminate the feeling of oppression and make rooms appear larger. One example of an indirect lighting fixture that is installed on a beam is an indirect lighting fixture previously filed by the applicant (Patent Document 1).

JP 2018-063885 A

By installing indirect lighting on beams, depth is added to the ceiling and walls, making the room appear larger. However, the support base that holds the light source in conventional indirect lighting protrudes from the beams by approximately 100mm to 300mm toward the interior of the room, which can still create a feeling of oppression or a small room, and there is room for improvement in this regard.

The present invention was made in light of these circumstances, and its goal is to provide a lighting device and installation structure for that lighting device that reduces the feeling of oppression or smallness in the room.

[Lighting equipment]
The lighting device of the present invention is a lighting device that is placed and used on the outside of a beam or pillar of a building, and includes a frame body that is placed on the outside of the beam or pillar so as to follow the surface of the beam or pillar, a light source provided in the frame body, and a light guide plate that is provided in the frame body so as to be positioned ahead of the light source in the emission direction.

[Lighting device installation structure]
The lighting device installation structure of the present invention is an installation structure for a lighting device that is placed and used on the outside of a beam or pillar of a building, in which the frame body of the lighting device is placed on the outside of the beam or pillar so as to follow the surface of the beam or pillar, and the frame body is fixed around the periphery of the beam or pillar.

The lighting device of the present invention is equipped with a frame that is placed on the outside of a beam or pillar so as to fit along the surface of the beam or pillar, and does not have a structure equivalent to a conventional support base that protrudes toward the inside of the room, so people in the room are less likely to feel oppressive or cramped. The lighting device installation structure of the present invention has the same effect.

FIG. 1 is a perspective view showing an example of an illumination device of the present invention. FIG. 2 is an exploded view of the lighting device shown in FIG. 1 . 2A to 2C are explanatory diagrams of the installation procedure for the lighting device shown in FIG. 1 . FIG. 10 is a cross-sectional view of the lighting device of the present invention attached to a beam.

(Embodiment)
An example of an embodiment of a lighting device and its installation structure of the present invention will be described with reference to the drawings. Here, the lighting device will be described as being mounted on a beam X that protrudes into the room from between the ceiling and the wall surface.

As an example, the lighting device shown in Figures 1 and 2 includes a frame 10 arranged outside the beam X so as to fit along the surface of the beam X, a light source 20 provided in the frame 10, a light guide plate 30 provided ahead of the light source 20 in the emission direction, and a fixing member 40 that fixes the frame 10 to the ceiling or wall surface around the beam X.

The frame 10 comprises a bottom surrounding frame 11 that covers the bottom side of the beam X, and a front surrounding frame 12 that covers the front side of the beam X. The bottom surrounding frame 11 and the front surrounding frame 12 are configured to be L-shaped in cross section, and a light source 20 and a light guide plate 30 are attached to the bottom surrounding frame 11 and the front surrounding frame 12, respectively. The frame 10 can be made of iron, aluminum, stainless steel, etc.

As shown in Figure 2, the bottom enclosure 11 in this embodiment includes two bottom horizontal frames (hereinafter, one bottom horizontal frame is referred to as the "first bottom horizontal frame 11a" and the other bottom horizontal frame is referred to as the "second bottom horizontal frame 11b") and a bottom rear frame 11c. The bottom rear frame 11c is connected between the rear ends of both bottom horizontal frames 11a and 11b so that the bottom enclosure 11 has a U-shaped configuration in plan view.

Openings are formed inside the bottom first horizontal frame 11a, the bottom second horizontal frame 11b, the bottom rear frame 11c, and the front lower frame 12d described later, and the light-emitting surface (irradiation surface, illumination surface) of the light guide plate 30 (hereinafter referred to as the "bottom side light guide plate 30a") described later is exposed from these openings.

Two bottom reinforcing frames 11d are provided at a distance between the rear bottom frame 11c and the lower front frame 12d (described later) near the center of their longitudinal direction, parallel to the horizontal bottom frames 11a and 11b. The number and installation positions of the bottom reinforcing frames 11d may vary.

In this embodiment, a first upper flange 11e protrudes outward from the upper edge of the first bottom horizontal frame 11a, a second upper flange 11f protrudes outward from the upper edge of the second bottom horizontal frame 11b, and a third upper flange 11g protrudes outward from the upper edge of the rear bottom frame 11c.

The first upper flange 11e and the second upper flange 11f are inserted into the side slits (support portions) 42b formed in the side fixing members 42 (described below), and the third upper flange 11g is inserted into the rear slits (support portions) X4 (Figure 4) formed in the beam lower wall surface X3 (described below).

A first lower flange 11h (hidden by the first bottom horizontal frame 11a in Figure 2) protrudes inward from the lower edge of the first bottom horizontal frame 11a, a second lower flange 11i protrudes inward from the lower edge of the second bottom horizontal frame 11b, and a third lower flange 11j protrudes inward from the lower edge of the rear bottom frame 11c. The first lower flange 11h, second lower flange 11i, third lower flange 11j, and fourth lower flange 11k (described below) support the light source 20 (hereinafter referred to as the "bottom-side light source 20a") and bottom-side light guide plate 30a (described below).

The front enclosure 12 comprises an upper front frame 12a, two front horizontal frames protruding downward from both ends of the upper front frame 12a (hereinafter, one of the front horizontal frames will be referred to as the "first front horizontal frame 12b" and the other as the "second front horizontal frame 12c"), and a lower front frame 12d located between the ends of the two front horizontal frames 12b and 12c.

The front lower frame 12d also serves as the bottom front frame of the bottom surrounding frame 11. A fourth lower flange 11k that protrudes rearward is provided on the lower edge of the front lower frame 12d. This fourth lower flange 11k, together with the first lower flange 11h, second lower flange 11i, and third lower flange 11j, supports the bottom-side light source 20a and bottom-side light guide plate 30a (described below).

Openings are formed inside the upper front frame 12a, the first front horizontal frame 12b, the second front horizontal frame 12c, and the lower front frame 12d, and the light-emitting surface (irradiation surface, illumination surface) of the light guide plate 30 (hereinafter referred to as the "front side light guide plate 30b") described later is exposed from these openings.

Two front reinforcing frames 12e are provided at a distance between the upper front frame 12a and the lower front frame 12d, near the longitudinal center of the frames, and parallel to the front horizontal frames 12b and 12c. The number and installation positions of the front reinforcing frames 12e may vary.

Two light guide plate support pieces 12f are provided on the backside of both front horizontal frames 12b, 12c, spaced apart in the vertical direction, to support the light guide plate 30. The light guide plate support pieces 12f are spaced apart in the front-to-back direction from both front horizontal frames 12b, 12c, with the front light guide plate 30b, described below, positioned in the gap between them.

As shown in Figure 4, the bottom surrounding frame 11 is provided with a bottom-side light source 20a and a bottom-side light guide plate 30a that diffuses the light emitted from the bottom-side light source 20a and emits it as a surface light.

The bottom-side light guide plate 30a is provided ahead of the bottom-side light source 20a in the emission direction so that its small end surface faces the bottom-side light source 20a. The bottom-side light guide plate 30a is also provided facing the bottom surface of the beam X, with its light-emitting surface (irradiation surface, illumination surface) facing outward. Although not shown, a power supply circuit, a power supply cord, etc. are connected to the bottom-side light source 20a.

The bottom-side light source 20a can be, for example, a tape LED with multiple LED chips mounted on a flexible substrate, and the bottom-side light guide plate 30a can be made of a plate material that can transmit and diffuse light, such as an acrylic plate or glass plate. Other materials can also be used for the bottom-side light source 20a and bottom-side light guide plate 30a.

As shown in Figure 4, the front enclosure frame 12 is provided with a light source 20 (hereinafter referred to as the "front light source 20b") and a front light guide plate 30b that diffuses the light emitted from the front light source 20b and emits it as a surface light.

The front-side light guide plate 30b is provided ahead of the front-side light source 20b in the emission direction so that its small end surface faces the front-side light source 20b. The front-side light guide plate 30b is also provided directly opposite the bottom surface of the beam X and so that its light-emitting surface (irradiation surface, illumination surface) faces outward. Although not shown, a power supply circuit, a power supply cord, etc. are connected to the front-side light source 20b.

Like the bottom-side light source 20a, the front-side light source 20b can be, for example, a tape LED with multiple LED chips mounted on a flexible substrate. Also, like the bottom-side light guide plate 30a, the front-side light guide plate 30b can be made of a plate material that can transmit and diffuse light, such as an acrylic plate or a glass plate. Materials other than these can also be used for the front-side light source 20b and the front-side light guide plate 30b.

The frame body 10 is installed along the outside of the beam X via the fixing member 40 (so that the frame body 10 and light guide plate 30 surround the beam X). As an example, the fixing member 40 shown in Figures 1 and 2 includes a ceiling fixing member (hereinafter referred to as the "upper fixing member") 41 that is fixed to the ceiling X1 on the front side of the beam, and a wall fixing member (hereinafter referred to as the "side fixing member") 42 that is fixed to the side wall X2 of the beam. One side fixing member 42 is provided on each longitudinal outer side of the frame body 10.

As shown in Figure 2, the upper fixing member 41 in this embodiment is a horizontally long wooden block. The upper fixing member 41 has screw holes 41a that run vertically through it for inserting screws used to secure the upper fixing member 41 to the beam front ceiling X1. Multiple screw holes 41a are provided at intervals along the length of the upper fixing member 41.

The side fixing members 42 are wooden blocks that are L-shaped when viewed from the side. Each side fixing member 42 has a screw hole 42a that runs through it in the left-right direction, allowing the insertion of a screw used to fix the side fixing member 42 to the beam side wall X2. Multiple screw holes 42a are provided at intervals in the up-down and front-to-back directions of each side fixing member 42. The inner surface of each side fixing member 42 has a side slit 42b that fits either the first upper flange 11e or the second upper flange 11f.

The configuration of the fixing member 40 described here is one example, and other fixing members 40 can also be used to install the lighting device on the beam X. For example, when fixing to a beam X that has a back surface in addition to a front and bottom surface (a beam with three surfaces), the side fixing members 42 can be made into an upward U-shape, and upper fixing members 41 can be provided on both the front and back surfaces.

Next, the installation procedure for the lighting device of this embodiment will be described with reference to FIGS.
(1) Figure 3(a) shows the ceiling X1 in front of the beam, the beam X, the side wall X2 beside the beam, and the wall surface X3 under the beam before the lighting device is installed.
(2) Prepare the upper fixing member 41 and the side fixing members 42 shown in Fig. 2, and fix the upper fixing member 41 to the front ceiling X1 of the beam, and fix the side fixing members 42 to the side walls X2 of the beam, as shown in Fig. 3(b). In this embodiment, a horizontally elongated thin spacer 43 is attached to the beam lower wall X3 and is disposed between the rear bottom frame 11c and the beam lower wall X3.
(3) After fixing the fixing member 40 as shown in Figure 3 (b), the first upper flange 11e and the second upper flange 11f of the lighting device are placed over the outside of the beam X so that they fit into the side slit 42b and the third upper flange 11g fits into the rear slit X4, and then the front upper frame 12a of the front enclosure frame 12 is fixed to the upper fixing member 41 with screws.
(4) After the upper fixing member 41 is fixed, the decorative plate 44 is attached to the outside of the upper front frame 12a, thereby completing the installation of the lighting device. The decorative plate 44 can be attached using adhesive, double-sided tape, or the like.

When the lighting device is installed in the above manner, the fixing members 40 are fixed to the wall or ceiling surrounding the beam X, and by fixing the lighting device to the fixing members 40, the beam X is covered (the beam is hidden by the lighting device).

Specifically, the upper fixing member 41 is fixed to the front ceiling X1 of the beam, and the side fixing members 42 are fixed to the side walls X2 of the beam. The first upper flange 11e and the second upper flange 11f fit into the side slits 42b formed in the side fixing members 42, and the third upper flange 11g fits into the rear slit X4 formed in the lower wall X3 of the beam. The upper front frame 12a of the front enclosure frame 12 is fixed to the upper fixing member 41, thereby covering the beam X with the lighting device.

Unlike conventional indirect lighting devices, the lighting device installation structure of this embodiment does not have a support base that supports the light source 20 protruding further toward the room than the beam X, which has the effect of reducing the sense of oppression or narrowness felt by people in the room.

Note that the above installation procedure is just one example, and the lighting device of the present invention can also be installed using procedures different from the above procedure.

(Other embodiments)
In the above embodiment, an example is given in which an illumination device having an L-shaped cross section is attached to a beam X protruding from the ceiling toward the interior of the room, but the shape of the illumination device of the present invention can also be U-shaped depending on the shape of the beam X.

In the above embodiment, an illumination device that covers the entire front and bottom surfaces of the beam X is used as an example, but the illumination device of the present invention can also be configured to cover only part of the beam X (for example, only the bottom surface or only the front surface of the beam X). In this case, the fixing member 40 can also be only the ceiling fixing member 41 that is fixed to the ceiling, or only the wall fixing member 42 that is fixed to the wall surface.

In the above embodiment, an example is given of a lighting device attached to a beam X that protrudes from the ceiling into the room, but the lighting device of the present invention can also be used as a lighting device that covers a pillar (not shown) in addition to a beam X.

In the above embodiment, an example is given in which the lighting device is installed via a fixing member 40, but it is also possible to fix the lighting device directly to the ceiling or wall, for example by providing a flange or the like on the frame body 10 and fixing the flange to the ceiling or wall around the beam X or pillar.

In the above embodiment, an example is given in which the spacer 43 is attached to the beam lower wall surface X3, but the spacer 43 can also be used as a fixing member (hereinafter referred to as the "rear fixing member"). For example, the spacer 43 is made thick enough to accommodate the third upper flange 11g, and the spacer 43 is fixed to the beam lower wall surface X3 away from the bottom surface of the beam X. In this case, by placing the third upper flange 11g in the gap formed between the bottom surface of the beam X and the top surface of the spacer 43, the spacer 43 can be used as the rear fixing member. In this way, there is no need to form a slit in the beam lower wall surface X3, improving workability.

Furthermore, when the spacer 43 is thickened and used as a rear fixing member as described above, a slit can be formed in the front surface of the spacer 43. In this case, the spacer 43 can be used as a rear fixing member by placing the third upper flange 11g in the slit. Note that when a slit is formed in the front surface of the spacer 43, the spacer 43 can be fixed to the lower wall surface X3 of the beam with its top surface separated from the bottom surface of the beam X, or it can be fixed in contact with it.

In the above embodiment, a tape LED is used as the light source 20, and the light guide plate 30 is placed ahead of the light source in the direction of emission. However, an LED fluorescent lamp or the like can also be used as the light source 20. In this case, a translucent panel through which light from the LED fluorescent lamp leaks can be used instead of the light guide plate 30.

In the above embodiment, the light emitted from the light source 20 is diffused by the light guide plate 30, but a phosphorescent panel can also be used instead of the light guide plate 30. In this case, the light source 20 can be left in place for phosphorescence purposes or can be omitted.

The lighting devices and their installation structures shown in the above and other embodiments are merely examples, and the lighting devices and lighting device installation structures of the present invention may be omitted, replaced, or modified as appropriate without departing from the spirit of the invention.

The lighting device and lighting device installation structure of the present invention can be used as lighting devices and lighting device installation structures to be attached to beams and columns in residential buildings such as apartment buildings and detached houses, as well as in schools, libraries, welfare facilities, and other buildings.

DESCRIPTION OF SYMBOLS 10 Frame body 11 Bottom surrounding frame 11a Bottom first horizontal frame 11b Bottom second horizontal frame 11c Bottom rear frame 11d Bottom reinforcing frame 11e First upper flange 11f Second upper flange 11g Third upper flange 11h First lower flange 11i Second lower flange 11j Third lower flange 11k Fourth lower flange 12 Front surrounding frame 12a Front upper frame 12b Front first horizontal frame 12c Front second horizontal frame 12d Front lower frame 12e Front reinforcing frame 12f Light guide plate support piece 20 Light source 20a Bottom side light source 20b Front side light source 30 Light guide plate 30a Bottom side light guide plate 30b Front side light guide plate 40 Fixing member 41 Ceiling fixing member (upper fixing member)
41a Screw hole 42 Wall surface fixing member (side fixing member)
42a Screw hole 42b Side slit (support part)
43 Spacer 44 Decorative panel X Beam X1 Ceiling in front of beam X2 Side wall of beam X3 Wall surface under beam X4 Back slit (support part)

Claims (9)

A lighting device that is attached to a beam protruding into the interior of a building and illuminates the interior of the building,
The building is a residential building,
a frame body provided with a light source and a light guide plate;
the frame body is surrounded by an elongated frame and has an opening, the opening being covered with a light guide plate;
The frame body is attached to the interior side of the beam , the irradiation surface of the light guide plate faces the interior side , and the entire interior side of the beam is covered with the light guide plate,
The light from the light source is emitted from the irradiation surface of the light guide plate to illuminate the interior of the room.
A lighting device characterized by: A lighting device that is attached to a pillar that protrudes into the interior of a building and illuminates the interior of the building,
The building is a residential building,
a frame body provided with a light source and a light guide plate;
the frame body is surrounded by an elongated frame and has an opening, the opening being covered with a light guide plate;
The frame body is attached to an indoor side surface of a pillar , the irradiation surface of the light guide plate faces the indoor side , and the entire indoor side surface of the pillar is covered with the light guide plate,
The light from the light source is emitted from the irradiation surface of the light guide plate to illuminate the interior of the room.
A lighting device characterized by: A lighting device that is attached to a beam protruding into the interior of a building and illuminates the interior of the building,
The building is a residential building,
A frame body having a light source and a light guide plate, and a fixing member that can attach the frame body to the indoor side surface of the beam ,
the frame body is surrounded by an elongated frame and has an opening, the opening being covered with a light guide plate;
The fixing member is attached to the interior side surface of the beam,
The frame body is attached to the interior side surface of the beam via the fixing member , and the irradiation surface of the light guide plate is on the interior side, and the entire or substantially entire interior side surface of the beam is covered with the light guide plate,
The light from the light source is emitted from the irradiation surface of the light guide plate to illuminate the interior side of the beam .
A lighting device characterized by: A lighting device that is attached to a pillar that protrudes into the interior of a building and illuminates the interior of the building,
The building is a residential building,
a frame body including a light source and a light guide plate; and a fixing member that can attach the frame body to the indoor side surface of the pillar ;
the frame body is surrounded by an elongated frame and has an opening, the opening being covered with a light guide plate;
The fixing member is attached to the interior side surface of the pillar,
The frame body is attached to the indoor side surface of the pillar via the fixing member , and the irradiation surface of the light guide plate faces the indoor side, and the entire indoor side surface of the pillar is covered with the light guide plate, or substantially the entire indoor side surface of the pillar is covered with the light guide plate,
The light from the light source is emitted from the irradiation surface of the light guide plate to illuminate the interior side of the pillar .
A lighting device characterized by: 4. The lighting device according to claim 1,
The frame body is elongated in the horizontal direction of the beam, and has a flange at an end of the frame body in the horizontal direction that protrudes outward from the end ,
The flange is fixed to the ceiling or wall around the beam , so that the frame is fixed to the ceiling or wall, and the irradiation surface of the light guide plate of the frame faces the room side.
The entire or substantially entire interior side surface of the beam is covered with a light guide plate of a frame body fixed to the ceiling or wall.
A lighting device characterized by: 5. The lighting device according to claim 2 or 4,
The frame body is elongated in the longitudinal direction of the column, and has flanges at the ends of the frame body in the width direction that protrude outward from the ends ,
The flange is fixed to the ceiling or wall around the pillar , so that the frame is fixed to the ceiling or wall, and the irradiation surface of the light guide plate of the frame faces the room side.
The entire or substantially entire indoor side surface of the pillar is covered with a light guide plate of a frame body fixed to the ceiling or wall.
A lighting device characterized by: 6. The lighting device according to claim 5,
The fixing member has a slit into which the flange of the frame body can be inserted and removed,
The frame is attached to the fixing member with the flange inserted into the slit, and the irradiation surface of the light guide plate attached to the frame faces the interior side of the beam .
A lighting device characterized by: 4. The lighting device according to claim 1,
The frame body is provided with a front enclosure frame that can cover the front side of the beam and a bottom enclosure frame that can cover the bottom side of the beam,
the front enclosure frame includes a front light source and a front light guide plate, and the bottom enclosure frame includes a bottom light source and a bottom light guide plate;
the front enclosure frame is attached to the front side of the beam, the irradiation surface of the front-side light guide plate is on the front side of the beam, and the irradiation surface of the front-side light guide plate covers the entire or substantially the entire front side of the beam,
the bottom surrounding frame is attached to the bottom side of the beam, the irradiation surface of the bottom side light guide plate is the bottom side of the beam, and the irradiation surface of the bottom side light guide plate covers the entire or substantially the entire bottom side of the beam,
The light from the irradiation surface of the front-side light guide plate illuminates the interior of the room on the front side of the beam, and the light from the irradiation surface of the bottom-side light guide plate illuminates the interior of the room on the bottom side of the beam.
A lighting device characterized by: 5. The lighting device according to claim 2 or 4,
The frame body includes a front enclosure frame that covers the front side of the column,
the front enclosure frame includes a front light source and a front light guide plate;
The front enclosure frame is attached to the front side of the pillar, which is the indoor side, so that the irradiation surface of the front light guide plate faces the indoor side, and the entire indoor side of the pillar is covered by the irradiation surface of the front light guide plate , or substantially the entire indoor side of the pillar,
The interior of the front room is illuminated by light from the irradiation surface of the front light guide plate rather than the pillar .
A lighting device characterized by: