Indirect lighting

Abstract

To provide an indirect lighting device which can form, on a wall surface irradiated, a linear belt-like area having a clear profile and a high illumination intensity.SOLUTION: An indirect lighting device 1 includes a light blocking plate 3 attached to a wall surface 2a away from the wall surface 2a, and a lighting apparatus 4 attached to the light blocking plate 3 and including a light source which illuminates the wall surface 2a.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to an indirect lighting device to be mounted on a wall surface.

Background Art

[0002] An indirect lighting device illuminates a ceiling or a wall, and by reflecting light in a wide area of the target ceiling or wall while preventing light from directly entering the eyes, it illuminates a room with soft light. As a conventional indirect lighting device to be mounted on a wall surface, for example, there is one described in Patent Document 1. This indirect lighting device includes a long instrument body attached to the wall surface in the left-right direction, fluorescent lamps attached to lamp sockets at both end portions of the instrument body, and a light-shielding plate having a sector-shaped cross section attached to the instrument body so as to be rotatable up and down so as to cover the fluorescent lamps.

[0003] As described above, in the case of using a long fluorescent lamp, light can be irradiated in a strip shape along the longitudinal direction of the light source with respect to the wall surface. Thereby, a strip-shaped region with high illuminance on the wall surface can be formed in the longitudinal direction of the fluorescent lamp, and the expansion of the space can be produced.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, the indirect lighting device described in Patent Document 1 described above does not directly illuminate the wall surface with a fluorescent lamp, but the wall surface is indirectly illuminated by the light reflected by the light-shielding plate. Therefore, the width of the strip-shaped region with high illuminance becomes wide, and the contour of this strip-shaped region becomes ambiguous, and there is a problem that the effect of producing the expansion of the space cannot be sufficiently obtained.

[0006] This invention was made in view of these problems, and aims to provide an indirect lighting device that can form a linear, highly illuminating, band-shaped area with a clear outline on an illuminated wall surface. [Means for solving the problem]

[0007] To solve the above problems, the indirect lighting device of the present invention is An indirect lighting device mounted on a wall, characterized by comprising a light-shielding plate mounted on the wall at a distance from the wall, and a light source attached to the light-shielding plate for illuminating the wall. According to this feature, by directly illuminating the wall surface with a light source attached to a light-shielding plate, a linear, highly illuminating band-shaped area with a clear outline can be formed on the illuminated wall surface.

[0008] The lighting fixture, including the light source, is characterized in that the entire fixture is attached to the light-shielding plate. This feature prevents the light from being blocked by the light fixture itself, as the entire fixture is attached to the light shield. Furthermore, because the entire fixture is attached to the light shield, the installation and removal of indirect lighting devices from the wall can be easily performed.

[0009] The light-shielding plate is characterized in that mounting means for attaching it to the wall surface are provided at both ends of the light-shielding plate. According to this feature, the light-shielding plate is attached to the wall surface using only mounting means at both ends, and the area behind the light-shielding plate and light source is widely open, allowing for more effective illumination of a wider area of ​​the wall surface.

[0010] The aforementioned light-shielding plate is characterized in that at least its lower edge has a canopy portion formed thereon that is bent in the direction of the wall. This feature makes it less likely for light sources to enter the eyes from below, thus eliminating glare.

[0011] The light-shielding plate is formed in a flat shape that is spaced parallel to the wall surface, and the eaves portion is formed by being bent at an acute angle in the direction of the wall surface. This feature allows the light-blocking panels to be positioned parallel to the wall, improving the design of the indirect lighting system. Additionally, the canopy is bent at a sharp angle, making it less visible from the front and below, thus improving its appearance.

[0012] The aforementioned light-shielding plate is characterized by its ability to change its angle relative to the wall surface. This feature allows the light distribution from the light source to the wall to be changed to upward and downward light distribution, upward light distribution, downward light distribution, etc. [Brief explanation of the drawing]

[0013] [Figure 1] This is a perspective view showing an indirect lighting device according to an embodiment of the present invention mounted on the wall surface of a partition panel. [Figure 2] This is an enlarged perspective view of the indirect lighting device from the rear. [Figure 3] This is an enlarged, exploded perspective view of the mounting section of the indirect lighting device to the wall. [Figure 4] This is a longitudinal cross-sectional side view showing the indirect lighting device attached to the vertical frame of the partition panel. [Figure 5] This is a magnified cross-sectional view of the lighting fixture mounting area. [Figure 6] This shows examples of changing the mounting angle of the light-shielding plate. (a) is a vertical cross-sectional view with the angle changed downwards, and (b) is a vertical cross-sectional view with the angle changed upwards. [Modes for carrying out the invention]

[0014] Embodiments for implementing the indirect lighting device of the present invention will be described below based on examples. [Examples]

[0015] The indirect lighting device 1 according to the embodiment will be described with reference to FIGS. 1 to 6. In the following description, the directions indicated by the arrows in FIG. 1 will be used as the front-back, left-right directions for explanation. As shown in FIG. 1, the indirect lighting device 1 is mounted, for example, on the upper part of the wall surface 2a on the front side (front surface side) of the partition panel 2 that partitions a room.

[0016] As shown in FIGS. 2 to 5, the indirect lighting device 1 includes a light shielding plate 3 having left and right dimensions substantially equal to the left and right width of the partition panel 2, a lighting fixture 4 attached to the rear surface thereof, end covers 5, 5 that cover the left and right end surfaces of the light shielding plate 3, and a pair of left and right brackets (attachment means) 6, 6 for attaching the light shielding plate 3 to the wall surface 2a.

[0017] The light shielding plate 3 includes, for example, a plate-like portion 32 formed in a flat plate shape from a steel material, an aluminum material, or the like, and eaves portions 31, 31 bent at an acute angle of, for example, 45 degrees in the direction of the wall surface 2a are continuously provided at the upper edge and the lower edge of the plate-like portion 32. The length of the eaves portions 31, 31 is, for example, about 1 / 4 of the vertical dimension of the light shielding plate 3, and the tip portions are folded back slightly forward.

[0018] A metal reinforcing member 7 bent backward so that the central portion in the vertical direction forms a hat-shaped cross section in a side view is fixed to the entire left and right direction on the rear surface of the light shielding plate 3 by spot welding or the like. A plurality of left and right (four) holders 8 for holding the lighting fixture 4 are fixed to the rear surface of the central portion of the hat-shaped cross section reinforcing member 7 by spot welding or the like. As shown in the enlarged view of FIG. 5, each holder 8 has a substantially U-shaped cross section facing backward in a side view, and the tip portions (rear end portions) of the upper and lower holding pieces 8a, 8a are bent slightly inwardly with respect to each other.

[0019] The lighting fixture 4 consists of a substrate 42 with approximately the same left-right dimensions as the light shielding plate 3, on which numerous chip-type LED elements (light-emitting diodes) 41, which are light sources, are mounted on the rear surface in a left-right direction, and a translucent light source cover 43 with a nearly semicircular cross-section in side view that covers the rear of the substrate 42 and the LED elements 41. The substrate 42 is fixed to the front end of the light source cover 43. On the upper and lower outer surfaces of the front end of the light source cover 43, locking grooves 43a, 43a that are continuous in the left-right direction and engage with the retaining pieces 8a, 8a of the holder 8. The rearward illumination angle of the LED elements 41 is set to a wide angle, for example, 120 to 150 degrees.

[0020] Power is supplied to the electrodes (not shown) of the circuit board 42 via wiring housed inside the partition panel 2 and an AC / DC converter (neither shown) connected to the wiring, allowing all LED elements 41 to be turned on and off by operating a switch. The AC / DC converter may also be provided in the lighting fixture 4.

[0021] To attach the lighting fixture 4 to the rear surface of the light shield 3, one of the locking grooves 43a on either the top or bottom of the light source cover 43 is locked to the tip of one of the upper or lower retaining pieces 8a of the multiple retainers 8 on the left and right sides of the reinforcing member 7. Then, the other locking groove 43a on the light source cover 43 is pushed into the other retaining piece 8a of the retainer 8, locking it in place while slightly expanding it elastically. Alternatively, the light source cover 43 can be attached by sliding it laterally and sequentially locking the upper and lower locking grooves 43a, 43a onto the retaining pieces 8a, 8a of the multiple retainers 8 on the left and right sides. In this case, it is done before attaching either the left or right end cover 5, 5 to the light shield 3.

[0022] Next, referring to Figure 3, the end covers 5, 5 and brackets 6, 6 mentioned above will be explained. Note that since the end covers 5 and brackets 6 are symmetrical and have the same shape, only one will be illustrated and explained.

[0023] The end cover 5 is formed, for example, from a steel plate, so as to form an isosceles triangle in side view with a right-angle portion at its rear end. The vertical dimension of the hypotenuse that extends vertically, i.e., perpendicular to the front edge of the end cover 5, is approximately equal to the vertical dimension of the light shield plate 3, and the two sides enclosing the right angle are formed at 45 degrees, which is equal to the inclination angle of the upper and lower eaves portions 31, 31.

[0024] A metal reinforcing plate 9 is fixed to the inner surface of the front side of the end cover 5 by spot welding or the like, along the slanted edge and two sides. Positioning fitting parts 10 are integrally connected inward to the front edge and upper and lower inclined edges of this reinforcing plate 9, which are fitted to the inner surfaces of the light shielding plate 3 and the upper and lower awning parts 31, 31. In addition, a fixing piece 11 for fixing to the reinforcing member 7 of the light shielding plate 3 is integrally connected inward to the upper and lower middle part of the rear edge of the reinforcing plate 9. Furthermore, a disc-shaped reinforcing plate 12 for attaching the bracket 6 is fixed to the inner surface of the rear end (right-angle part) of the end cover 5 by spot welding or the like, and a pin 13 for changing the upper and lower angle of the light shielding plate 3 is projected inward from the outer circumference of the front side of this reinforcing plate 12.

[0025] To attach the end cover 5 to the side of the light shield 3, first, the positioning fitting portion 10 is fitted to the inner surface of the side ends of the light shield 3 and the upper and lower visor portions 31, 31, and the inner surface of the end cover 5 is brought into contact with the side ends of the light shield 3 and the upper and lower visor portions 31, 31 to position it.

[0026] Next, the male threaded portions of the bolts 15, 15, which are inserted from the rear into the two upper and lower insertion holes 14, 14 formed in the fixing piece 11 and the hat-shaped cross section of the reinforcing member 7, are screwed into the welded nuts 16, 16 fixed to the front side of the insertion holes 14 of the reinforcing member 7 and tightened (see Figure 4). This fixes the end cover 5 to the reinforcing member 7, covering the side end faces of the light shielding plate 3 and the awning portions 31, 31.

[0027] The bracket 6 has a metal, vertical plate-shaped bracket body 61 and a fixing piece 62 for the end cover 5 integrally attached to the upper front edge thereof, facing forward. Two locking claws 61a, 61a are integrally attached to the rear edge of the bracket body 61.

[0028] The front edge of the fixing piece 62 has a mounting hole 62a for attaching it to the end cover 5 and three notches 62b into which the pins 13 of the reinforcing plate 12 can be selectively fitted. The central of the three notches 62b is formed horizontally to the mounting hole 62a, while the upper and lower notches 62b are formed at positions offset by 45 degrees vertically from the horizontal line connecting the center of the central notch 62b and the center of the mounting hole 62a.

[0029] To attach the bracket 6 to the end cover 5, the pin 13 of the reinforcing plate 12 is fitted into the notched hole 62b in the center of the fixing piece 62, and the bolt 17 is inserted from the outside of the end cover 5 into the mounting hole 12a formed in the reinforcing plate 12 and the mounting hole 62a of the fixing piece 62, and the nut 19 is screwed onto the male threaded portion that protrudes inward from the fixing piece 62 via a washer 18 and tightened. In this way, the bracket 6 and the end cover 5 are fixed so that the slanted edge of the front edge of the end cover 5 is perpendicular. At the same time, the light shielding plate 3, more specifically the plate-shaped portion 32 to which the end cover 5 is attached, also becomes perpendicular (see Figure 4).

[0030] To attach the indirect lighting device 1 assembled in this manner to the partition panel 2, as shown in Figure 4, the locking claws 61a, 61a of the left and right brackets 6 are locked into the two upper and lower locking holes 2c, 2c formed on the front surface of the vertical frames 2b at both ends of the partition panel 2. This allows the indirect lighting device 1 to be detachably attached to the wall surface 2a such that the light shielding plate 3 is spaced parallel to the wall surface 2a, and the light from the LED element 41, which is the light source of the lighting fixture 4, is directly shone onto the wall surface 2a via the light source cover 43. In this case, the light distribution is upward and downward relative to the wall surface 2a, as shown by the arrows in Figure 4.

[0031] Furthermore, as shown in Figure 6, the angle of the light shielding plate 3 can be changed to alter the light distribution to the wall surface 2a. Specifically, as shown in Figure (a), when the pin 13 of the reinforcing plate 12 is fitted into the notched hole 62b on the lower side of the fixing piece 62 to fix the bracket 6 and the end cover 5, the light shielding plate 3 is tilted downwards by 45 degrees, allowing the light from the light source cover 43 to be directed upwards to the wall surface 2a. Also, as shown in Figure (b), when the pin 13 is fitted into the notched hole 62b on the upper side to fix the bracket 6 and the end cover 5, the light shielding plate 3 is tilted upwards by 45 degrees, allowing the light from the light source cover 43 to be directed downwards to the wall surface 2a.

[0032] As described above, in the indirect lighting device 1 according to the embodiment, the entire lighting fixture 4, consisting of the LED element 41 which is the light source, the substrate 42, and the light source cover 43, is substantially attached to the rear surface of the light shield plate 3. Therefore, the light source can directly illuminate the wall surface 2a, and a linear, highly illuminating band-shaped region with a clear outline can be formed on the illuminated wall surface 2a. This allows for a sufficient effect of creating a sense of spaciousness in the longitudinal direction of this band-shaped region.

[0033] Furthermore, the light-shielding plate 3 to which the lighting fixture 4 is attached is mounted to the wall surface 2a only by a pair of brackets 6, 6 at both ends, and the area behind the light-shielding plate 3 and the lighting fixture 4 is widely open. In other words, a vertically communicating gap is formed between the lighting fixture 4 and the wall surface 2a, extending in the longitudinal direction. This allows for more effective illumination of the wall surface 2a over a wider area, and a linear, high-illumination band-shaped area is formed continuously in the longitudinal direction of the light source, resulting in a superior aesthetic appearance when viewed from below or above the indirect lighting device 1. Moreover, when viewed from below the indirect lighting device 1, the ceiling is visible through the gap between the lighting fixture 4 and the wall surface 2a, creating a less oppressive structure. In addition, because it is mounted to the wall surface 2a with brackets 6, 6, the mounting height of the indirect lighting device 1 can be easily changed. Furthermore, since the brackets 6, 6 are thin plate-like pieces, the area that blocks light is small.

[0034] Furthermore, since the lower edge of the light-shielding plate 3 is connected to a canopy portion 31 that is bent in the direction of the wall surface 2a, the light source of the lighting fixture 4 is less likely to be seen from below, thus eliminating glare. Moreover, since the canopy portion 31 is bent at a sharp angle of 45 degrees in the direction of the wall surface 2a, the lower canopy portion 31 is less visible from the front and below, improving the appearance.

[0035] Furthermore, since the light-shielding plate 3 is positioned parallel to the wall surface 2a, the design of the indirect lighting device 1 is improved.

[0036] For example, in the above embodiment, a surface-mount type LED element 41 is used as the light source, but a bullet-shaped LED element may be attached to the substrate 42, and other light sources such as fluorescent lamps can be used instead of the LED element 41.

[0037] Furthermore, in the above embodiment, the light-shielding plate 3 is made flat and has eaves 31 formed on its upper and lower edges, but the upper eaves 31 may be omitted. Also, if the shape of the light-shielding plate 3 is a semi-circular cross section in side view that protrudes forward, the eaves 31 can be omitted as well.

[0038] Furthermore, in the above embodiment, the lighting fixture 4 is attached to a reinforcing member 7 fixed to the rear surface of the light-shielding plate 3, but the reinforcing member 7 can be omitted and the lighting fixture 4 can be directly attached to the rear surface of the light-shielding plate 3.

[0039] Furthermore, although the angle of the light-shielding plate 3 is adjustable in the above embodiment, it may be made inflexible.

[0040] Furthermore, the indirect lighting device 1 may be mounted on the wall surface 2a so that its longitudinal direction faces vertically or diagonally. [Explanation of Symbols]

[0041] 1 Indirect lighting device 2 partition panels 2a Wall surface 3. Light-blocking plate 4 Lighting fixtures 5 End cover 6. Bracket (Mounting means) 7 Reinforcement members 8 Holder 9 Reinforcement plate 10 Positioning fitting part 11 Fixed piece 12 Reinforcement plate 12a Mounting hole 13 pins 14 Through hole 31 Eaves 32 Plate-shaped part 41 LED elements (light sources) 42 circuit boards 43 Light source cover 43a Locking groove 61 Bracket body

Claims

1. An indirect lighting device mounted on a wall, The wall comprises a light-shielding plate attached to the wall at a distance from the wall, and a light source attached to the light-shielding plate for illuminating the wall. The light-shielding plate is formed in a flat shape that can be arranged parallel to and spaced apart from the wall surface. An indirect lighting device characterized in that at least the lower edge of the light-shielding plate has an overhang portion formed thereon, which is bent at an acute angle in the direction of the wall.

2. The indirect lighting device according to claim 1, characterized in that the entire lighting fixture, including the light source, is attached to the light shielding plate.

3. The indirect lighting device according to claim 1, characterized in that mounting means for attaching to the wall surface are provided at both ends of the light-shielding plate.

4. The indirect lighting device according to any one of claims 1 to 3, characterized in that the angle of the light-shielding plate can be changed with respect to the wall surface.

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