Sunlight filtering lighting system and sunlight filtering lighting panel

Abstract

The lighting system should be removable and unobtrusive, allowing for natural-looking dappled sunlight indoors. [Solution] A dappled sunlight lighting system using a system ceiling 320, wherein a lighting fixture 310 is provided on the system ceiling 320, and a dappled sunlight lighting panel 330 having multiple openings 337 is detachably installed in one section of the system ceiling 320, and the effect of dappled sunlight is produced by the light emitted from the lighting fixture 310 and passing through the openings 337 of the dappled sunlight lighting panel 330.

Description

Technical Field

[0001] The present invention relates to a dappled sunlight lighting system that provides a lighting effect simulating dappled sunlight indoors, and a dappled sunlight lighting panel.

Background Art

[0002] In general, lighting fixtures are designed to provide relatively uniform illuminance indoors to ensure sufficient brightness for indoor work. However, lighting fixtures that provide a non-uniform lighting effect have also been proposed.

[0003] The display device 2 described in Patent Document 1 irradiates the light of the lamp 3 onto the floor surface 1 through the decorative pattern plate 4 below the display space 2a, and forms a decorative pattern 5 such as dappled sunlight, which is a pattern by light, on the floor surface 1.

[0004] Patent Document 2 is an interior decoration related to the ceiling part. A plate with a pattern formed by an inkjet sheet on a transparent acrylic plate is installed on the ceiling near the wall surface, and a dappled sunlight-like light pattern is formed on the wall surface near the ceiling.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] Although it may seem simple to reproduce the dappled sunlight naturally seen outdoors indoors, there are actually problems.

[0007] The leaves that create dappled sunlight are supported by the tree trunk. The problem is how to install components equivalent to leaves on the underside of the lighting fixture, in a way that is as unobtrusive as possible.

[0008] Furthermore, it is desirable to be able to easily switch back to normal lighting when one becomes tired of the dappled sunlight lighting. If a dappled sunlight lighting system is built into the interior of a building, as in Patent Document 2, then rework will be required when one becomes tired of the dappled sunlight lighting.

[0009] Furthermore, while sunlight is parallel light, attempting to recreate the effect of sunlight filtering through trees using lighting fixtures is difficult because the light source emits divergent light, making it impossible to achieve the desired effect of sunlight filtering through trees due to the limited distance between the elements corresponding to leaves and the floor. Patent Document 2 describes a dropped ceiling in the center of a room with lighting that creates a sunlight filtering effect on the wall surface near the original ceiling height, but it does not describe the lighting effect on the floor or desk surface, which are at a distance. Patent Document 1 does not use lighting from the ceiling, but merely shines light onto the floor below from an exhibition space that a person can look into.

[0010] Furthermore, while the sunlight filtering through the trees flickers due to the wind outdoors, the indoor lighting does not flicker.

[0011] Furthermore, using decorative panels that mimic leaves presents the problem of wasted light because the leaf pattern blocks the light.

[0012] Therefore, the present invention aims to provide a dappled sunlight lighting system that is unobtrusive indoors and easily removable, as well as a dappled sunlight lighting panel used therein. [Means for solving the problem]

[0013] The present invention is a system for dappled sunlight lighting using a system ceiling, The aforementioned system ceiling is equipped with lighting fixtures, A detachable sunlight-filtering lighting panel with multiple openings is installed in one section of the aforementioned system ceiling. This is a dappled sunlight lighting system that emits light from the aforementioned lighting fixture and creates the effect of dappled sunlight by passing light through the opening of the dappled sunlight lighting panel.

[0014] In the present invention, the upper surface of the dappled sunlight lighting panel is also reflective, and by not installing anything in the section adjacent to the section where the dappled sunlight lighting panel is installed in the system ceiling, the light reflected upward from the dappled sunlight lighting panel may be used as illumination light.

[0015] In the present invention, the upper surface of the dappled sunlight lighting panel is further reflective, and a light diffusion panel is installed in a section adjacent to the section where the dappled sunlight lighting panel is installed in the system ceiling, so that the light reflected upward from the dappled sunlight lighting panel can be used as illumination light.

[0016] The present invention comprises a lighting fixture, a sunlight filtering light panel having multiple openings, a light scattering plate installed between the lighting fixture and the sunlight filtering light panel, and a light scattering plate operating device. This is a dappled sunlight lighting system that emits light from the aforementioned lighting fixture and produces a changing dappled sunlight effect by passing light through the opening of the dappled sunlight lighting panel.

[0017] In the present invention, the light scattering plate operating device may be a fan, and the light scattering plate may move due to the airflow from the fan.

[0018] The present invention relates to a dappled sunlight lighting panel having a size that can be installed on a system ceiling and having multiple triangular openings, The narrowest of the three angles of the aforementioned triangle is between 25 degrees and 45 degrees. This is a sunlight-filtering lighting panel in which the ratio of the total area of ​​the openings to the area of ​​the sunlight-filtering lighting panel is 20% or more and 40% or less.

[0019] In the present invention, further, among the openings, a small opening having a long side length of 1 / 2 or less of the large opening may be disposed between two large openings.

Effect of the Invention

[0020] The dappled sunlight lighting system using the system ceiling of the present invention installs a lighting fixture near the slab where a lighting fixture is not originally installed, and installs a dappled sunlight lighting panel in the system lighting where a lighting fixture is originally installed, and performs lighting through the dappled sunlight lighting panel, so that the dappled sunlight lighting effect can be obtained regardless of the location indoors.

[0021] In addition, the dappled sunlight lighting system using the light scattering plate of the present invention can obtain a changing dappled sunlight lighting effect by installing a light scattering plate that moves between the lighting fixture and the dappled sunlight lighting panel.

[0022] In addition, in the dappled sunlight lighting system, by using the dappled sunlight lighting panel provided with the triangular opening of the present invention, it is possible to ensure the brightness near the narrow-angle shadow and to produce an effect of projecting an elongated dappled sunlight-like shadow.

Brief Description of the Drawings

[0023] [Figure 1] Configuration diagram of the dappled sunlight lighting system of Embodiment 1 [Figure 2] Plan view of the dappled sunlight lighting panel in the dappled sunlight lighting system of Embodiment 1 [Figure 3] Plan view of the modified dappled sunlight lighting panel in the dappled sunlight lighting system of Embodiment 1 [[ID=3O]] [Figure 4] Photo showing an example of use of the dappled sunlight lighting system of Embodiment 1

Modes for Carrying Out the Invention

[0024] <Embodiment 1> <Basic Configuration> Figure 1 is a side view of the configuration of the dappled sunlight lighting system 300 according to this embodiment. The dappled sunlight lighting system 300 consists of a spotlight lighting fixture 310, a system ceiling 320 (T-bar 321), a dappled sunlight lighting panel 330, and the like.

[0025] <Lighting fixtures> As shown in Figure 1, the lighting fixture 310 is a spotlight and is attached to a lighting rail 351 installed beneath the slab 350 (the reinforced concrete floor surface of the upper floor). The lighting rail 351 secures the lighting fixture 310 and also supplies power to the lighting fixture 310.

[0026] A portion of the light rays 311T1 emitted from the lighting fixture 310 passes through the opening 337 of the dappled sunlight lighting panel 330 and contributes to the dappled sunlight effect as light rays 311T2.

[0027] The lighting fixture 310 is preferably small, with a light-emitting area of ​​6 cm or less, and a particularly strong light-emitting area of ​​3 cm or less, so that it can create dappled sunlight shadows over a long distance. The lighting fixture 310 has a 1 / 2 beam angle of 24 degrees or a light distribution angle of 46 degrees. It is preferable to select a light distribution angle for the lighting fixture 310 that illuminates almost the entire surface of the dappled sunlight lighting panel 330. The distance between the dappled sunlight lighting panel 330 and the slab 350 is, for example, 62 cm, and the lighting fixture 310 is installed between them. Therefore, the light-emitting part of the lighting fixture 310 is positioned about 40 cm from the dappled sunlight lighting panel 330. However, by installing it as far away as possible, for example, 30 cm or more, it is possible to form light and shadow patterns not only on the desk 360 close to the dappled sunlight lighting panel 330, but also on the floor 370 far from the dappled sunlight lighting panel 330.

[0028] The lighting fixture 310 uses three color light sources, allows the color temperature to be changed from 1800K to 12000K, and also allows control of Duv (color deviation). This makes it possible to create not only ordinary white light, but also sunset colors and greenish light passing through green leaves. The color and brightness of the lighting fixture 310 can be controlled by the control device 380.

[0029] In addition, a fixed-color lighting fixture 310 may be used. In that case, it is also desirable that the brightness of the lighting fixture can be changed by the control device 380.

[0030] <Control device> The control device 380 consists of a tablet, smartphone, or PC. By operating the software 381 (not shown) within the control device 380, the user can control the color and brightness of the lighting fixture 310, the intensity of the fan 341, etc. For example, the changes in the color and brightness of the lighting fixture 310 can be set in advance as a schedule, and scheduled operation can be performed to change the color and brightness of the lighting according to the time.

[0031] <System Ceiling> The system ceiling 320 consists of T-bars 321 arranged in a grid pattern, with the T-bars 321 suspended from the slab 350. The sections separated by the T-bars 321 can be freely fitted with air conditioning, lighting fixtures, ventilation fans, speakers, and panels without equipment.

[0032] <Sunlight filtering through trees lighting panel> The dappled sunlight lighting panel 330 is removablely installed in a section of the system ceiling 320. Removal does not require damaging any fixed parts. Therefore, it is easy to change the room's ambiance by changing the dappled sunlight lighting panel, and it is also easy to replace the dappled sunlight lighting panel with a regular panel or lighting fixture.

[0033] Figure 2 is a plan view of the dappled sunlight lighting panel 330. The dappled sunlight lighting panel 330 is a 592 mm square panel that can be installed on a system ceiling 320 in which T-bars 321 are arranged at 600 mm intervals.

[0034] By installing the dappled sunlight lighting panel 330 on the system ceiling 320, the problem of supporting the dappled sunlight lighting panel 330 is solved, and it is also easy to replace the dappled sunlight lighting panel 330 when it becomes worn out.

[0035] The dappled sunlight lighting panel 330 has right-angled triangular openings 337 of various sizes, each having a longest side, a second side shorter than the longest side, and a short side shorter than the second side. The openings 337 include a relatively large triangle (second side 98 mm × short side 57 mm) opening 331, a smaller triangle (second side 69 mm × short side 40 mm) opening 332, an even smaller triangle (second side 49 mm × short side 28 mm) opening 333, an even smaller triangle (second side 29 mm × short side 17 mm) opening 334, and an even smaller triangle (second side 14.7 mm × short side 8.5 mm) opening 335. Openings 331, 332, 333, 334, and 335 are collectively referred to as opening 337. Thus, the panel is characterized by having a large opening (e.g., opening 331) and a smaller opening (e.g., opening 333) whose longer side is less than half the length of the larger opening. By having openings of various sizes, it is possible to create varied light and shadow. The dappled sunlight lighting panel has five different sizes of openings, but it is sufficient to have two or more types of openings, and it is more preferable to have three or more types of openings.

[0036] The arrangement of the openings 337 involves distributing the larger openings 331 and 332 across the entire dappled sunlight lighting panel 330, while placing smaller openings 334 and 335 between the larger openings. These smaller openings have a long side length that is less than half the long side length of the larger openings and an area that is less than one-quarter the size of the larger openings. In this case, the smallest opening 335, in particular, does not create shadows on the floor 370 or other areas far from the dappled sunlight lighting panel 330, but rather adds a little brightness to those shadows.

[0037] The opening 337 is a similar right triangle with three angles, which makes it easy to manufacture. The narrowest of the three angles of the opening 337, the narrow angle, is set to approximately 35 degrees. This ensures sufficient brightness near the shadow of the narrow angle and allows for the projection of long, dappled shadows reminiscent of sunlight filtering through trees.

[0038] A narrow angle of 25 degrees or more and 40 degrees or less is preferable. If the narrow angle exceeds 40 degrees, the shadow will not be linear, and if the narrow angle is less than 25 degrees, it will be difficult to ensure sufficient light passing through the aperture.

[0039] The total area of ​​the 337 openings is 96,062 cm². 2 The total area of ​​the panel is 350,464 cm². 2 The panel's aperture ratio, which is the ratio to the total area, is approximately 27.4%.

[0040] A small aperture ratio reduces the brightness of the illumination, while a large aperture ratio makes the shaded areas too bright. Therefore, an aperture ratio of 20% to 40% is preferable, and 25% to 35% is more preferable.

[0041] <Sections where panels will not be installed> The upper surface (light source side) of the dappled sunlight lighting panel 330 is made of a light-reflecting material that reflects light, such as metallic or white, and reflects the light rays 311R1 from the light source upward as light rays 311R2, returning them to the slab 350. The reflectivity of the dappled sunlight lighting panel 330 should be 60% or more, and preferably 75% or more.

[0042] Section 320T, which is far from the dappled sunlight lighting panel 330, does not have a panel installed. Therefore, the light ray 311R2 is re-reflected by the slab 350 and, without being blocked by the panel, functions as the indoor lighting light ray 311R3.

[0043] Furthermore, in section 320T, a light-diffusing panel 320D may be installed, which transmits light but obscures the view of the slab side, such as frosted glass, light-diffusing acrylic panel, or light-diffusing polycarbonate panel. This allows the cluttered ceiling space to be concealed while the light reflected upward from the dappled sunlight lighting panel 330 can be used as illumination.

[0044] <Area where panels will be installed> Panel 320P is installed in the section away from the dappled sunlight lighting panel 330.

[0045] <Light scattering plate operating device and windsock-type light scattering plate> A windsock-shaped light scattering plate 340 is positioned so as to enter the light beam of the lighting fixture 310. To give movement to the light scattering plate 340, a fan 341, which is a light scattering plate operating device, blows air onto the light scattering plate 340. Alternatively, a motor installed at the mounting part of the light scattering plate 340 may be used as the light scattering plate operating device, and the light scattering plate 340 can be moved directly by the rotation of the motor.

[0046] The light scattering plate 340 is made of a thin, elongated white sheet of plastic, but any plate that reflects light and moves with a weak breeze will suffice.

[0047] As a result, a portion of the light emitted from the lighting fixture 310 is altered by the moving light scattering plate 340 and passes through the opening 337 of the dappled sunlight lighting panel 330, thus creating the effect of changing dappled sunlight.

[0048] Figure 3 is a plan view of a modified example of the dappled sunlight lighting panel 430. The dappled sunlight lighting panel 430 is a square panel with sides of 592 mm.

[0049] The dappled sunlight lighting panel 430 has a circular opening 431 with a diameter of 15 mm and a smaller circular opening 432 with a diameter of 10 mm. The openings 431 and 432 are collectively referred to as the opening 437.

[0050] All of the openings 437 are circular, which makes manufacturing easier.

[0051] The total area of ​​the 437 openings is 14,984 cm². 2 The total area of ​​the panel is 350,464 cm². 2 The panel's aperture ratio, which is the ratio to the total area, is approximately 4.3%.

[0052] The dappled sunlight lighting panel 430 is not suitable for obtaining brightness due to its small aperture ratio, but because the shape of the light-transmitting part is round, it generates light and shadows on floors and desks that do not resemble the image of sunlight filtering through leaves, although the overlapping of the round light is beautiful. When light passing through the round opening is incident on a wall at an angle, it forms an elongated pattern of light similar to sunlight filtering through trees. Although the aperture ratio is small, the light reflected by the dappled sunlight lighting panel 430 is re-reflected by the slab and irradiated downward as illumination light from adjacent sections of the system lighting, thus ensuring sufficient brightness in the room.

[0053] <Usage example> Figure 4 is a photograph showing an example of the use of the dappled sunlight lighting system 300. The system ceiling 320 is divided into sections with dappled sunlight lighting panels 330 installed and sections 320T with nothing installed. In this photograph, the lighting fixtures 310, light scattering plates 340, and fans 341 installed on top of the system ceiling 320 are present but not clearly visible.

[0054] On wall 355, a distinct pattern of dappled sunlight is created by the nearby dappled sunlight lighting panel 430.

[0055] Cabinet 365 is illuminated by a dappled sunlight lighting panel 330 located a short distance away, creating a gentle pattern of light and shadow.

[0056] Even on the desk 360, the dappled sunlight lighting panel 330, located a short distance away, creates a gentle pattern of light and shadow.

[0057] Because the floor 370 is covered with a patterned carpet, it is difficult to discern the dappled sunlight lighting pattern in Figure 4, which is a black and white photograph, but it is clear that there are both bright and dark areas.

[0058] From the above, it can be seen that the 300 sunlight filtering lighting system realizes an indoor lighting space that has a lighting pattern consisting of light and shadow, unlike conventional monotonous indoor lighting spaces.

[0059] <Variations and Notes> This lighting system is called a "sunlight filtering through trees lighting system," but it does not need to resemble sunlight filtering through trees as long as it has panels with openings that create a lighting pattern of light and shadow.

[0060] The lighting fixtures may include downlights, universal (directional) downlights, LED bulbs, etc. Furthermore, the lighting fixtures may be capable of automatically changing direction, thereby enabling the creation of variations in light without the use of light scattering plates and light scattering plate operating devices, or in conjunction with light scattering plates and light scattering plate operating devices.

[0061] While the example of controlling the light color of a lighting fixture was shown as a wireless control method, wired control may also be used.

[0062] The light scattering plate may be something that refracts light, such as a prism, or something that partially blocks light, such as a disc-type chopper.

[0063] The lighting fixtures can be fixed above the dappled sunlight lighting panel, and a lighting rail is not required. For example, the lighting fixtures may be attached to a jig fixed to a T-bar or panel. The light scattering plate operating device can also be fixed using a similar method.

[0064] Furthermore, the embodiments disclosed herein are illustrative in all respects and do not constitute a limiting interpretation. Therefore, the technical scope of the present invention is not construed solely by the embodiments described herein, but is defined based on the claims. This also includes all modifications within the meaning and scope of the equivalents of the claims. [Explanation of Symbols]

[0065] 300 Sunlight filtering through trees lighting system 310 Spotlight (Lighting Fixture) 311R1, 311R2, 311R3, 311T1, 311T2 rays 320 System Ceiling 320D Light Diffusion Panel 320P panel 320T section 321 T-bar 330, 430 Sunlight filtering through trees lighting panel 331, 332, 333, 334, 335, 337, 431, 432, 437 opening 340 Light scattering plate 341 Fan (Light scattering plate operating device) 350 slab 351 Lighting Rail 355 Wall 360 desk 365 Cabinet 370 beds 380 Control device 381 Software

Claims

1. A system of dappled sunlight lighting using a system ceiling, The aforementioned system ceiling is equipped with lighting fixtures, A detachable sunlight-filtering lighting panel with multiple openings is installed in one section of the aforementioned system ceiling. A dappled sunlight lighting system that emits light from the aforementioned lighting fixture and creates the effect of dappled sunlight by passing light through the opening of the dappled sunlight lighting panel.

2. The aforementioned sunlight-filtering lighting panel has a light-reflective upper surface, and by not installing anything in the section adjacent to the section where the sunlight-filtering lighting panel is installed in the system ceiling, the light reflected upward from the sunlight-filtering lighting panel is used as illumination light. The dappled sunlight lighting system according to claim 1.

3. The aforementioned sunlight-filtering lighting panel has a light-reflective upper surface, and a light-diffusing panel is installed in the system ceiling adjacent to the section where the sunlight-filtering lighting panel is installed, thereby using the light reflected upward from the sunlight-filtering lighting panel as illumination light. The dappled sunlight lighting system according to claim 1.

4. The system comprises a lighting fixture, a dappled sunlight lighting panel having multiple openings, a light scattering plate installed between the lighting fixture and the dappled sunlight lighting panel, and a light scattering plate operating device. A dappled sunlight lighting system that emits light from the aforementioned lighting fixture and produces a changing dappled sunlight effect by passing light through the opening of the dappled sunlight lighting panel.

5. The light scattering plate operating device is a fan, and the light scattering plate moves due to the airflow from the fan. The dappled sunlight lighting system according to claim 4.

6. A dappled sunlight lighting panel having a size that allows it to be installed on a system ceiling and having multiple triangular openings, The narrowest of the three angles of the aforementioned triangle is between 25 degrees and 45 degrees. A sunlight-filtering lighting panel in which the ratio of the total area of ​​the openings to the area of ​​the sunlight-filtering lighting panel is 20% or more and 40% or less.

7. Among the aforementioned openings, a smaller opening is positioned between two larger openings, the length of which is half or less of the length of the larger openings. The dappled sunlight lighting panel according to claim 6.

Images