WO2021070731A1

WO2021070731A1 - Lighting device

Info

Publication number: WO2021070731A1
Application number: PCT/JP2020/037427
Authority: WO
Inventors: 将三豊久; 山口　洋一
Original assignee: 株式会社キルトプランニングオフィス; 株式会社カネカ
Priority date: 2019-10-10
Filing date: 2020-10-01
Publication date: 2021-04-15
Also published as: JPWO2021070731A1

Abstract

The lighting device has a configuration comprising a center-of-gravity-side node part, four vertex-side node parts, and four connection parts, wherein the four vertex-side node parts are arranged so as to correspond to the respective vertices of a tetrahedron including at least one regular triangular face, the center-of-gravity-side node part is disposed at the center of gravity of the tetrahedron, the four connection parts are for connecting the center-of-gravity-side node part with the respective vertex-side node parts and extend from the center-of-gravity-side node part toward the respective vertex-side node parts, and a surface light source is attached to the center-of-gravity-side node part.

Description

Lighting device

The present invention relates to a lighting device. In particular, the present invention relates to a lighting device using a surface light source such as an organic EL panel or an LED panel in which LEDs are studded in a plane shape.

Conventionally, there is known a lighting device that uses an organic EL panel as a surface light source and illuminates an indoor space with soft light close to natural light (for example, Patent Document 1).

Japanese Patent No. 5598633

However, the lighting device described in Patent Document 1 has a problem that a plurality of organic EL panels are arranged in a plane, which is flat and uninteresting. Therefore, there has been a demand for a lighting device that is novel and has excellent design, which has never existed before.

Therefore, an object of the present invention is to provide a lighting device capable of three-dimensional decoration with a sense of depth.

One aspect of the present invention for solving the above-mentioned solution has a center of gravity side knot, four apex side knots, and four connections, and the four apex side knots are each apex of the tetrahedron. The nodule on the side of the center of gravity is arranged at the position of the center of gravity of the tetrahedron, and the tetrahedron has at least one surface forming an equilateral triangle and three of the tetrahedrons forming the equilateral triangle. The lengths from the apex to the remaining vertices are equal, and the four connecting portions connect the center of gravity side nodule and each apex side nodule, and each from the center of gravity side nodule. The nodule on the center of gravity side extends toward the nodule on the apex side, and the nodule on the center of gravity side is a lighting device to which a surface light source is attached.

According to this aspect, the tetrahedron has nodules at the apex position and the center of gravity position, and the connecting portion connects these nodules, so that the entire lighting device has a three-dimensional spread. Therefore, the lighting device as a whole can have a sense of depth, and three-dimensional decoration is possible.
According to this aspect, since the surface light source is attached to the nodule on the center of gravity side arranged at the position of the center of gravity of the tetrahedron, the surface light source can be stably installed with good weight balance.

The preferred aspect is that the surface light source is attached to the opposite side of the center of gravity side nodule with respect to one connection.

According to this aspect, since the surface light source is located on the opposite side of the one connection part and the nodule on the center of gravity side, it is easier to balance the weight.

The preferred aspect is that the surface light source is rotatably attached to the nodule on the center of gravity side.

According to this aspect, by rotating the light emitting surface of the surface light source, the light emitting surface of the surface light source can be directed in a desired direction.

The preferred aspect is that the connection portion has a mirror surface in part or in whole on the outer surface.

According to this aspect, the synchrotron radiation emitted from natural light or a surface light source and its reflected light, the synchrotron radiation emitted from other lighting devices and its reflected light, etc. are reflected at the connection portion, and a gorgeous appearance can be exhibited. it can.

A preferred aspect is to have a wiring member including a first wiring portion, a second wiring portion, and a wiring portion for a light source, and the first wiring portion has a center of gravity along one connection portion from one apex side knot portion side. The second wiring portion extends toward the side knot portion, branches from the first wiring portion, extends toward another apex side knot portion along the other connection portion, and is the wiring for the light source. The unit is branched from the first wiring unit and connected to the surface light source so that power can be supplied. The second wiring unit and the wiring unit for the light source have the same potential when energized. ..

According to this aspect, for example, when a load such as another surface light source is attached to the second wiring portion, the second wiring portion and the light source wiring portion have the same potential when energized, so that the surface from the light source wiring portion While supplying power to the light source, it can also supply power to the load.

A more preferable aspect is that the connection portion is a hollow body having a space inside, and the wiring member is such that the first wiring portion extends through the space of the connection portion and the first wiring portion extends in the center-of-gravity side nodule portion. 2 It is to branch into the wiring part and the wiring part for the light source.

According to this aspect, it is possible to supply power to the surface light source by passing through the space inside the connection part and the nodule on the center of gravity side. Therefore, a part or all of the wiring member is hidden by the connecting portion and the nodule on the center of gravity side, so that the wiring member can be obscured in appearance. Further, a part or all of the wiring member is protected by the connecting portion and the nodule on the center of gravity side, and the wiring member can be prevented from being disconnected.

A preferred aspect is a lighting device that is attached by hanging from the attached portion, and one of the four connecting portions extends in the vertical direction in a state of being hung from the attached portion. It is that you are.

The term "attached portion" as used herein refers to a portion to be attached to the lighting device, and includes, for example, structures such as ceilings, walls, and floors.

According to this aspect, since the connection part and the surface light source overlap in the vertical direction, the weight balance is good and it can hang down stably from the attached part.

In a more preferable aspect, the second surface light source is attached to each of the three apex-side nodules connected to the other three connection portions among the four connection portions, and each second surface light source is the above three. It is located above the two apex-side nodules and is attached in the extending direction of the one connecting portion.

According to this aspect, since each second surface light source is mounted on the same side in the vertical direction, the weight balance becomes better.

The preferred aspect is that the center-of-gravity nodule, the four apex-side nodules, and the four connections form a diamond crystal structure of a ball-and-stick model.

According to this aspect, it has an unprecedented original appearance and is highly designed.

A preferred aspect is that the unit portion has a plurality of unit portions, and the unit portion is composed of the center of gravity side nodule portion, the four apex side nodules, and the four connecting portions, and is between two adjacent unit portions. Has a shared nodule that shares the apex nodule.

According to this aspect, the number of parts can be reduced because the apex side nodule can be shared between adjacent unit parts.

A more preferable aspect is that the plurality of unit portions include a first unit portion, a second unit portion, and a third unit portion, and an apical nodule portion is provided between the first unit portion and the second unit portion. There is a first shared nodule that shares the same, and between the second unit and the third unit, there is a second shared nodule that shares the apical nodule, and the third unit and the third unit share the same. Between the 1 unit portions, there is a third shared nodule portion that shares the apical side nodule portion, the center of gravity side nodule portion of the first unit portion, the center of gravity side nodule portion of the second unit portion, and the third unit portion. The center of gravity side nodule of the unit, the first shared nodule, the second shared nodule, and the third shared nodule are each connected by the connecting portion to form an annular portion, and are of a chair type. It is a positional relationship of three-dimensional seating.

According to this aspect, the center-of-gravity nodule of the first unit, the center-of-gravity nodule of the second unit, the center-of-gravity nodule of the third unit, the first shared nodule, and the second shared nodule. The part and the third common nodule part have a positional relationship of a chair-shaped conformation. Therefore, there is almost no three-dimensional distortion, and the structural stability is high.

According to the present invention, three-dimensional decoration with a sense of depth is possible.

It is a perspective view which shows typically the lighting apparatus of 1st Embodiment of this invention. It is a perspective view of the unit part of FIG. It is a perspective view of the unit part of FIG. 1, and is the perspective view seen from the direction different from FIG. It is a cross-sectional perspective view of the unit body of FIG. It is sectional drawing of the apex side nodule part of FIG. It is a conceptual diagram of the unit part of FIG. It is explanatory drawing of the unit part of FIG. 6, (a) is a conceptual diagram which shows the 2nd stage unit part, and (b) is a conceptual diagram which shows the 3rd stage unit part. It is an exploded perspective view of the surface light source part of FIG. It is a perspective view which shows typically the lighting apparatus of 2nd Embodiment of this invention. It is a perspective view of the unit part of FIG. It is a perspective view which shows the unit part of another embodiment of this invention schematically, (a) is a tetrahedron structure which is higher than a regular tetrahedron, (b) is a regular tetrahedron. On the other hand, it represents a case where a tetrahedral structure having a low height is adopted. It is a perspective view which shows typically the installation state of the lighting apparatus of another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail.

As shown in FIG. 1, the lighting device 1 of the first embodiment of the present invention is a decorative lighting device that is attached to a mounted surface 200 (mounted portion) such as a ceiling surface.
The lighting device 1 is mainly composed of a base portion 2, a hanging portion 3, a unit portion 5, and a wiring member 6 (see FIGS. 4 and 5).

As shown in FIG. 1, the base portion 2 is a plate-like body attached to the attached surface 200, and is fixed in surface contact with the attached surface 200 by an attachment means such as a fastening element or an adhesive (not shown). It is a part.

As shown in FIG. 1, the hanging portion 3 is a portion that connects the base portion 2 and the unit portion 5 and suspends the unit portion 5 with respect to the base portion 2. That is, the hanging portion 3 can be supported by hanging the unit portion 5 with respect to the base portion 2.
The hanging portion 3 of the present embodiment is a string-shaped body or a rod-shaped body extending in a predetermined direction.

As shown in FIG. 1, the unit unit 5 is composed of a plurality of unit bodies 10 and a plurality of surface

light source units

11 and 12, and the unit bodies 10 are connected in a stepped manner and spread three-dimensionally.
As shown in FIGS. 2 and 3, the unit body 10 includes an apex side nodule portion 20 (20a to 20d), a center of gravity side nodule portion 21, a first connection portion 22, and a second connection portion 23.
As shown in FIGS. 2 and 3, the unit body 10 constitutes a diamond crystal structure of a ball-and-stick model by four apex-side nodules 20a to 20d, a center-of-gravity-side nodule 21, and

connection portions

22 and 23. ing. That is, the

nodule portions

20 and 21 correspond to balls (atoms), and the

connection portions

22 and 23 correspond to sticks.

The apex-side nodule portions 20a to 20d are portions arranged at each apex position of the regular tetrahedron 15 (regular triangular pyramid) as shown in FIG. 2, and are also arranged at the apex positions of the cube 16 as shown in FIG. Is.
As shown in FIGS. 2 and 5, the apex-side nodule 20 is a hollow body having a substantially spherical shape and an internal space 26, and the outer surface is a mirror surface.

As shown in FIG. 5, the apex side nodule portion 20 includes a plurality of attachment portions 27 to 29.
The mounting portions 27 to 29 are communication holes extending from the outer surface toward the space 26 and communicating with the space 26. The mounting

portions

27 and 28 are extension holes extending in the vertical direction so as to be close to each other when the lighting device 1 is mounted on the mounted surface 200, and are arranged in the vertical direction. That is, the first attachment portion 27 is provided at the top of the apex side nodule portion 20, and the second attachment portion 28 is provided at the bottom of the apex side nodule portion 20.

As shown in FIG. 5, the mounting portion 29 extends in a direction intersecting the vertical direction when the lighting device 1 is mounted on the mounted surface 200. That is, the central axis of the mounting portion 29 intersects the central axis of the mounting

portions

27 and 28 and extends diagonally upward.

The first mounting portion 27 can mount the apex side light source portion 11 by inserting the mounting portion 51 of the apex side light source portion 11.
The first connection portion 22 can be attached to the second attachment portion 28 by inserting the first connection portion 22.
The second connection portion 23 can be attached to the third attachment portion 29 by inserting the second connection portion 23.

The center-of-gravity side nodule 21 is a portion arranged at the center-of-gravity position of the regular tetrahedron 15 as shown in FIG. 2, and is also a portion arranged at the center position of the cube 16 as shown in FIG.
As shown in FIGS. 2 and 4, the center-of-gravity side nodule 21 is a hollow body having a substantially spherical shape and a space 36 inside, and the outer surface is a mirror surface.

As shown in FIG. 4, the center-of-gravity side nodule portion 21 includes a plurality of attachment portions 37 to 41.
The mounting portions 37 to 41 are communication holes extending from the outer surface toward the space 36 and communicating with the space 36.
The mounting

portions

37 and 38 are extension holes extending in the vertical direction so as to be close to each other when the lighting device 1 is mounted on the mounted surface 200, and are arranged in the vertical direction. That is, the first mounting portion 37 is provided at the top of the center of gravity side nodule portion 21, and the second mounting portion 38 is provided at the bottom of the center of gravity side nodule portion 21.
The mounting portions 39 to 41 are holes arranged side by side at intervals in the circumferential direction with respect to the central axes of the mounting

portions

37 and 38.
The mounting portions 39 to 41 extend in a direction intersecting the vertical direction when the lighting device 1 is mounted on the mounted surface 200. That is, the central axes of the mounting portions 39 to 41 intersect the central axes of the mounting

portions

37 and 38 and extend diagonally downward.

The first connection portion 22 can be attached to the first attachment portion 37 by inserting the first connection portion 22.
The second mounting portion 38 can mount the center of gravity side light source portion 12 by inserting the mounting portion 51 of the center of gravity side light source portion 12.
By inserting the second connection portion 23 into each of the third attachment portions 39 to 41, the second connection portion 23 can be attached to each of the third attachment portions 39 to 41.

As shown in FIGS. 2 and 4, the first connecting portion 22 is a portion connecting the apex side nodule portion 20a and the center of gravity side nodule portion 21, and is an extending portion extending in a predetermined direction. The first connecting portion 22 has a cylindrical shape, has a space 46 inside, and has a mirror surface on the outer surface.

As shown in FIGS. 2 and 4, the second connecting portion 23 is a portion connecting the center-of-gravity side nodule portion 21 and the apex side nodule portion 20b to 20d, and is an extending portion extending in a direction different from that of the first connecting portion 22. Is. The second connecting portion 23 has a cylindrical shape, has a space 56 inside, and has a mirror surface on the outer surface.

As shown in FIG. 8, the apex side light source portion 11 (second surface light source) includes a light emitting panel 50 and a mounting portion 51.
The light emitting panel 50 is a planar light emitting panel in which one side is a light emitting surface, the light emitting surface emits light in a planar manner, and diffused light is emitted. Specifically, the light emitting panel 50 is an organic EL panel.
The light emitting panel 50 of the present embodiment is a square plate-shaped panel having a planar spread.
The light emitting panel 50 may be an LED panel in which LEDs are studded in a plane shape.

As shown in FIG. 8, the attachment portion 51 is a portion for rotatably attaching the light emitting panel 50 to the first attachment portion 27 of the apex side nodule portion 20.
The apex side light source portion 11 of the present embodiment includes a bearing portion 52 on the back surface of the light emitting panel 50, and a shaft portion 53 on the mounting portion 51. Then, in the apex side light source unit 11, the shaft portion 53 of the mounting portion 51 is inserted into the bearing portion 52 of the light emitting panel 50, and the light emitting panel 50 can rotate around the shaft portion 53 in the circumferential direction.

Since the center-of-gravity side light source unit 12 is a member similar to the apex side light source unit 11 and has the same configuration as the apex side light source unit 11, the same configuration is designated by the same reference numerals and description thereof will be omitted. To do. That is, as shown in FIG. 8, the center of gravity side light source unit 12 includes a light emitting panel 50 and a mounting portion 51, and the mounting portion 51 attaches the light emitting panel 50 to the second mounting portion 38 of the center of gravity side nodule portion 21. It can be mounted rotatably. That is, in the center of gravity side light source unit 12, the light emitting panel 50 can rotate around the shaft portion 53 of the mounting portion 51 in the circumferential direction.

The wiring member 6 is a power supply wiring for supplying power from an external power source to the

light source units

11 and 12 on each surface, and has a positive wiring and a negative wiring built therein.
As shown in FIGS. 4 and 5, the wiring member 6 is composed of a main wiring portion 70, a wiring portion 71 for a first light source, and a wiring portion 72 for a second light source.
The main wiring portion 70 is a wiring that crawls mainly inside the unit body 10, and is a connection wiring for electrically connecting from the apex-side nodule 20a at the base end to each apex-side nodule 20b to 20d at the end. ..

The main wiring portion 70 is configured by alternately arranging the first wiring portion 75 and the second wiring portion 76.
As shown in FIG. 4, the first wiring portion 75 is a wiring portion that extends from the apex side nodule portion 20a toward the center of gravity side nodule portion 21 and connects the apex side nodule portion 20a and the center of gravity side nodule portion 21.
The second wiring portion 76 is connected to the end portion of the first wiring portion 75, extends from the center of gravity side nodule portion 21 toward the apex side nodule portion 20b to 20d, and extends from the center of gravity side nodule portion 21 to the apex side nodule portion 20b to 20d. It is a wiring part to connect.

As shown in FIG. 4, the first light source wiring unit 71 is a branch wiring branched from the intermediate portion of the main wiring unit 70, and is a power supply wiring for supplying power to the center of gravity side light source unit 12. Specifically, the first light source wiring unit 71 is wiring branched from the end of the first wiring unit 75, and is the same as the second wiring unit 76 separately branched from the first wiring unit 75 when energized. It is an electric potential.

The second light source wiring unit 72 is a branch wiring branched from the intermediate portion of the main trunk wiring unit 70 as shown in FIG. 5, and is a power supply wiring for supplying power to the apex side light source unit 11. Specifically, the second light source wiring unit 72 is wiring branched from the end of the second wiring unit 76, and is the same as the first wiring unit 75 separately branched from the second wiring unit 76 when energized. It is an electric potential.

Subsequently, the positional relationship of each member of the lighting device 1 of the present embodiment will be described. The state in which the base portion 2 is attached to the surface to be attached 200 and the unit portion 5 is hung by the hanging portion 3 is used as a reference.

As shown in FIG. 1, the lighting device 1 has a base portion 2 attached to a surface to be attached 200 by a fixing means (not shown). The hanging portion 3 extends in the vertical direction, and the lower end portion is connected to the apex side knot portion 20a of the first stage.

Focusing on the unit body 10, the apex side nodule 20a is connected to the center of gravity side nodule 21 via the first connection 22 as shown in FIG. 2, and the center of gravity side nodule 21 is connected to each second connection. It is connected to the apex side nodule portions 20b to 20d via the portion 23.
As shown in FIG. 5, in the apex side nodule portion 20a, the first mounting portion 27 is connected to the hanging portion 3 (first stage) or the apex side light source portion 11 (second and subsequent stages), and the second mounting portion 28. Is connected to the first connecting portion 22, and the third mounting portion 29 is connected to the second connecting portion 23.

As shown in FIG. 4, the center of gravity side nodule portion 21 has a first attachment portion 37 connected to the first connection portion 22, a second attachment portion 38 connected to the center of gravity side light source portion 12, and a third attachment portion 21. Units 39 to 41 are connected to each second connection unit 23.

As can be read from FIG. 6, the lighting device 1 has a plurality of locations that share the apex-side nodules 20a to 20d among the unit bodies 10.
The apex-side nodules 20b to 20d of the first-stage unit bodies 10a are shared nodules that also serve as the apex-side nodules 20a of the second-stage unit bodies 10b to 10d. That is, the apex-side nodule portions 20b to 20d of the first-stage unit body 10a are connected to the second attachment portion 28 with the first connection portion 22 as shown in FIG.

In the second-stage unit body 10b, as shown in FIG. 7A, the apex-side nodule portion 20c is a shared nodule portion that also serves as the apex-side nodule portion 20b of the second-stage unit body 10c, and is on the apex side. The nodule 20d is a shared nodule that also serves as the apex-side nodule 20b of the second-stage unit body 10d.
The second-stage unit body 10c is a shared knot portion in which the apex-side nodule portion 20d also serves as the apex-side nodule portion 20c of the second-stage unit body 10d.
That is, the second connecting portion 23 of the unit body 10 adjacent to the mounting portion 29 is inserted into each of the apex-side nodule portions 20 of the second-stage unit bodies 10b to 10d.

Further, as shown by the thick line in FIG. 7A, the lighting device 1 includes the center-of-gravity side nodule 21 of each of the second-stage unit bodies 10b to 10d, the shared apex side nodule 20, and these. The annular portion 80 is formed by the second connecting portion 23 connecting the nodule portions 20. The

nodule portions

20 and 21 constituting the annular portion 80 have a positional relationship of chair-shaped conformation.

As shown in FIG. 7, the apex-side nodule portions 20b to 20d of the second-stage unit bodies 10b to 10d are shared nodule portions that also serve as the apex-side nodule portions 20a of the third-stage unit bodies 10e to 10j. .. That is, the apex-side nodule portions 20b to 20d of the second-stage unit bodies 10b to 10d are connected to the second attachment portion 28 by the first connection portion 22.

As shown in FIG. 7B, the third-stage unit bodies 10e to 10j share the apex-side nodule portions 20b to 20d among the adjacent unit bodies 10 as in the second-stage unit bodies 10b to 10d. The second connecting portion 23 of the adjacent unit body 10 is inserted into each apex side nodule portion 20.
Further, as shown in FIG. 7B, the lighting device 1 has the center-of-gravity side nodule 21 of each of the third-stage unit bodies 10e to 10j, the shared apex side nodule 20, and these nodule 20. A plurality of annular portions 80 are configured by the second connecting portion 23 to be connected. The

nodule portions

As shown in FIG. 5, the apex side light source unit 11 is located on the extension of the first connection unit 22 in the extending direction.
The apex side light source portion 11 and the first connecting portion 22 are arranged at positions facing each other with the apex side nodule portions 20b to 20d interposed therebetween. That is, the apex side light source unit 11 is on the side opposite to the connection portion of the apex side nodule portions 20b to 20d with the first connection portion 22, and is located on the upper side in the vertical direction.
In the apex side light source unit 11, the shaft portion 53 is located on an extension of the central axis of the first connecting portion 22, and the light emitting panel 50 is rotatable around the shaft portion 53.

As shown in FIG. 4, the center-of-gravity side light source unit 12 is located on the extension of the first connection unit 22 in the extending direction and on the opposite side of the apex side surface light source unit 11.
The center of gravity side light source portion 12 and the first connecting portion 22 are arranged at positions facing each other with the center of gravity side nodule portion 21 interposed therebetween. That is, the center-of-gravity side light source unit 12 is on the side opposite to the connection portion of the center-of-gravity side nodule portion 21 with the first connection portion 22, and is located on the lower side in the vertical direction.
In the center of gravity side light source unit 12, the shaft portion 53 is located on an extension of the central axis of the first connecting portion 22, and the light emitting panel 50 can rotate around the shaft portion 53.

According to the lighting device 1 of the present embodiment, the apex side knot portion 20 is arranged at the apex position of the regular tetrahedron 15 which is a regular polyhedron having the smallest number of vertices, sides, and faces. Therefore, it can be formed at low cost, and three-dimensional decoration with a sense of depth is possible.

According to the lighting device 1 of the present embodiment, the

nodules

20 and 21 are evenly and most spaced in a certain space. Therefore, even with a simple configuration, a gorgeous appearance can be exhibited.

According to the illumination device 1 of the present embodiment, even when observed from all directions, the overlap of the synchrotron radiation from the surface

light source units

11 and 12 is minimized, and a wider range can be illuminated. Therefore, energy saving is possible.

According to the lighting device 1 of the present embodiment, each center of gravity side nodule portion 21 is systematically supported by the second connecting portion 23. Therefore, it is highly stable and highly reliable.

According to the lighting device 1 of the present embodiment, a surface light source is used as a light source. Therefore, as compared with the LED which is a point light source, the perspective effect can be easily obtained and the effectability is excellent.

According to the lighting device 1 of the present embodiment, since each apex side nodule portion 20 and each

connection portion

22 and 23 have the same shape, they can be made into the same member, and can be manufactured inexpensively and easily.

According to the lighting device 1 of the present embodiment, the unit unit 5 has a regular tetrahedron structure, and the surface

light source units

11 and 12 are provided at positions where there is little steric hindrance. Therefore, the connecting

portions

22 and 23 are less likely to interfere with each other, and the surface

light source portions

11 and 12 can be easily rotated.

According to the lighting device 1 of the present embodiment, since the surface

light source portions

11 and 12 are rotatable with respect to the

nodule portions

20 and 21, the light emitting surface can obtain an appropriate decorative effect according to the installation location. The angle of the can be adjusted, and the degree of freedom of decoration is high.

According to the lighting device 1 of the present embodiment, the surface

light source units

11 and 12 are connected in parallel to the external power source and have the same potential. Therefore, the entire wiring member 6 can be simplified, and the surface

light source portions

11 and 12 can be easily replaced and the unit portion 5 can be easily expanded.

According to the lighting device 1 of the present embodiment, the first connecting portion 22 connecting the apex side nodule portion 20a and the center of gravity side nodule portion 21 extends in the vertical direction, and the remaining apex side nodule portions 20b to 20d form a vertical axis. It is rotationally symmetric three times with respect to the center line of the connecting portion 22. Therefore, the mutual arrangement of the

nodules

20 and 21 is stable, the weight of the lighting device 1 as a whole is easily balanced, and the stability is excellent.

According to the lighting device 1 of the present embodiment, the unit portion 5 has a diamond crystal structure having the

nodule portions

20 and 21 as atomic positions. Therefore, it becomes a decorative lighting device with a novel design that has never existed before.

According to the lighting device 1 of the present embodiment, the annular portion 80 is formed by the center-of-gravity side nodule portion 21 of the second-stage unit bodies 10b to 10d, the apex side nodule portion 20 constituting the shared nodule portion, and the connecting

portions

22, 23. It is configured. Then, according to the illumination device 1 of the present embodiment, the

nodules

20 and 21 constituting the annular portion 80 have a positional relationship of the chair conformation, such as the carbon group of cyclohexane in the chair conformation. It has become. Therefore, there is almost no three-dimensional distortion, and the structural stability is high.

Subsequently, the lighting device 300 according to the second embodiment of the present invention will be described. The same configuration as that of the lighting device 1 of the first embodiment is designated by the same reference numerals and the description thereof will be omitted. The same shall apply hereinafter.

In the lighting device 300 of the second embodiment, the postures of the lighting device 1 and the unit unit 5 of the first embodiment are reversed as shown in FIGS. 9 and 10. That is, in the lighting device 300, the top and bottom of the unit portion 5 are reversed.
The lighting device 300 includes a base portion 2, a hanging portion 3, and a unit portion 305.
As shown in FIGS. 9 and 10, the unit unit 305 is composed of a plurality of unit bodies 310 and a plurality of surface

light source units

311, 312, and the unit body 310 is spread out in a plurality of stages.
The surface

light source portions

311, 312 form a universal joint with the light emitting panel 350 and the mounting portion 351 so that the joining angle can be freely changed.

As shown in FIG. 10, the light emitting panel 350 is a panel similar to the light emitting panel 50, and the mounting portion 351 is mounted on the corner portion of the light emitting panel 350.

According to the lighting device 300 of the present embodiment, since the light emitting panel 350 and the mounting portion 351 form a universal joint, the light emitting surface of the light emitting panel 350 can be directed in a desired direction, and the degree of freedom of decoration is increased. high.

In the above-described embodiment, the

light emitting panels

50 and 350 have a front view shape, but the present invention is not limited to this, and the shapes of the

light emitting panels

50 and 350 are not limited. For example, it may be a polygonal shape such as a front view triangle, a pentagon, or a hexagon, or it may be a circular shape or an elliptical shape.

In the above-described embodiment, the wiring member 6 crawls into the

spaces

26, 36, 46, 56 inside the unit body 10, but the present invention is not limited to this. The wiring member 6 may be partially or wholly exposed to the outside of the unit body 10.

In the above-described embodiment, the apex-side nodule 20 is arranged at the apex position of the regular tetrahedron 15, but the present invention is not limited to this. The apex-side nodule 20 may be arranged at the apex position of a tetrahedron having at least one surface of an equilateral triangle and having the same length from the three vertices of the equilateral triangle to the remaining vertices. For example, each vertex-side nodule 20 may be arranged at each vertex position of the tetrahedron whose height is higher than that of the regular tetrahedron 15 as shown in FIG. 11 (a), or FIG. 11 (b). As described above, it may be arranged at each vertex position of the tetrahedron whose height is lower than that of the regular tetrahedron 15. In either case, the position of the center of gravity is located on an axis orthogonal to the position of the center of gravity of the equilateral triangle.

In the above-described embodiment, the unit portion 5 is suspended from the attached surface 200 by the suspending portion 3, but the present invention is not limited to this. When the mounted surface 200 is a wall surface or a floor surface, the unit portion 5 may be fixed to the mounted surface 200 by a rigid support member.

In the above-described embodiment, the case where the unit unit 5 has three stages has been described, but the present invention is not limited to this. The unit unit 5 may have one or two stages, or may have four or more stages.

In the above-described embodiment, the first connecting portion 22 of the lower unit portion 5 is connected to all the apex-side nodule portions 20 in the upper stage, but the present invention is not limited to this. The first connecting portion 22 of the lower unit portion 5 may be connected only to a part of the apex side nodule portion 20.

In the above-described embodiment, the hanging portion 3 is attached to the attached surface 200 via the base portion 2, but the present invention is not limited to this. The hanging portion 3 may be directly attached to the attached surface 200 without going through the base portion 2.

In the first embodiment described above, the case where one lighting device 1 is attached to the surface to be attached 200 has been described, but the present invention is not limited thereto. As shown in FIG. 12, a plurality of lighting devices 1 may be laid on the mounted surface 200 in a planar manner. In this case, it is preferable to spread the base portion 2 of each lighting device 1 so as to be tessellated.
Similarly, in the above-described second embodiment, the case where one lighting device 300 is attached to the attached surface 200 has been described, but the present invention is not limited thereto. A plurality of lighting devices 300 may be laid on the mounted surface 200 in a planar manner.

As long as the above-described embodiment is included in the technical scope of the present invention, each component can be freely replaced or added between the respective embodiments.

1,300 Lighting device 2 Base part 3 Suspended part 5,305 Unit part 6

Wiring member

10,10a-10j Unit body (1st unit body, 2nd unit body, 3rd unit body)
11,311 Vertex side light source (second surface light source)
12,312 Center of gravity side light source 15

Regular tetrahedron

20, 20a to 20d Apex side nodule (1st shared nodule, 2nd shared nodule, 3rd shared nodule)
21 Center of gravity side knot 22 1st connection 23 2nd connection 26 Space 27 1st mounting 28 2nd mounting 29 3rd mounting 36 Space 37 1st mounting 38 2nd mounting 39-41 3rd mounting Part 46 Space 50,350 Light emitting panel 51,351 Mounting part 52 Bearing part 53 Shaft part 56 Space 70 Main wiring part 71 First light source wiring part 72 Second light source wiring part 75 First wiring part 76 Second wiring part 80 Circular portion 200 Attached surface (attached portion)

Claims

It has a nodule on the center of gravity side, four nodules on the apex side, and four connections.
The four apex-side nodules are arranged so as to form each apex of the tetrahedron.
The center-of-gravity side nodule is arranged at the position of the center of gravity of the tetrahedron.
The tetrahedron has at least one surface forming an equilateral triangle, and the lengths from the three vertices forming the equilateral triangle to the remaining vertices are equal.
The four connecting portions connect the center-of-gravity side nodule to each apex-side nodule, and extend from the center-of-gravity-side nodule toward each apex-side nodule.
The nodule on the center of gravity side is a lighting device to which a surface light source is attached.
The lighting device according to claim 1, wherein the surface light source is attached to the opposite side of the center of gravity side nodule with respect to one connection portion.
The lighting device according to claim 1 or 2, wherein the surface light source is rotatably attached to the nodule on the center of gravity side.
The lighting device according to any one of claims 1 to 3, wherein the connecting portion has a part or all of an outer surface as a mirror surface.
It has a wiring member including a first wiring unit, a second wiring unit, and a wiring unit for a light source.
The first wiring portion extends from one apex side nodule side toward the center of gravity side nodule along one connection portion.
The second wiring portion branches from the first wiring portion and extends along the other connection portions toward the other apex-side nodules.
The light source wiring portion is branched from the first wiring portion and is connected to the surface light source so that power can be supplied.
The lighting device according to any one of claims 1 to 4, wherein the second wiring unit and the light source wiring unit have the same potential when energized.
The connection portion is a hollow body having a space inside.
The illumination according to claim 5, wherein the first wiring portion extends through the space of the connection portion and branches into the second wiring portion and the light source wiring portion in the center-of-gravity side nodule portion. apparatus.
It is a lighting device that hangs down from the attached part and is attached.
The lighting device according to any one of claims 1 to 6, wherein one of the four connecting portions extends in the vertical direction in a state of being hung from the attached portion.
A second surface light source is attached to each of the three apex-side nodules connected to the other three connections among the four connections.
The lighting device according to claim 7, wherein each second surface light source is located on the upper side of the three apex-side nodules and is attached in the extending direction of the one connection portion.
The lighting device according to any one of claims 1 to 8, wherein the center-of-gravity-side nodule, the four apex-side nodules, and the four connections form a diamond crystal structure of a ball-and-stick model.
Has multiple unit units
The unit portion is composed of the center-of-gravity side nodule portion, the four apex side nodule portions, and the four connection portions.
The lighting device according to any one of claims 1 to 9, wherein there is a shared nodule portion that shares an apex side nodule portion between two adjacent unit portions.
The plurality of unit units include a first unit unit, a second unit unit, and a third unit unit.
Between the first unit portion and the second unit portion, there is a first shared nodule portion that shares the apex side nodule portion.
Between the second unit portion and the third unit portion, there is a second shared nodule portion that shares the apex side nodule portion.
Between the third unit portion and the first unit portion, there is a third shared nodule portion that shares the apex side nodule portion.
The center-of-gravity side nodule of the first unit, the center-of-gravity nodule of the second unit, the center-of-gravity nodule of the third unit, the first shared nodule, and the second shared nodule. The lighting device according to claim 10, wherein the third shared nodule is connected by the connecting portion to form an annular portion, and has a positional relationship of a chair-shaped conformation.