KR102605449B1 - Hidden Lighting Device - Google Patents

Abstract

The present invention relates to hidden lighting fixtures.
For this purpose, the hidden lighting device of the present invention is provided with an opening at the bottom of a hollow frame, a mounting part is formed on the inside to hold a light emitting member, and a light diffusion panel is coupled to the lower part of the light emitting member to cover the opening, A thin plate finishing material with micropores is attached to cover the light diffusion panel so that light passing through the light diffusion panel is emitted.
As a result, when power is applied, it can be installed on the interior walls, ceiling, and floor of a building and function as a lighting fixture, but when power is not applied, it can function as an outdoor finishing material of the building, improving the aesthetic sense in harmony with the surroundings.

Description

Hidden Lighting Device

The present invention relates to a hidden lighting fixture, and more specifically, when power is not applied, it functions as an indoor/outdoor finishing material for buildings such as louvers or panels, and when power is applied, light diffused from the light emitting member is transmitted through micropores. This relates to a hidden lighting fixture that can provide a three-dimensional aesthetic without damaging the design integrity of the finishing material by penetrating through the thin plate finishing material and functioning as a lighting fixture.

As interest in the residential environment increases in accordance with the trend of modern people who value quality of life, various building materials are being used to design indoor and outdoor spaces. In particular, interior and exterior finishing materials of buildings are designed to provide various textures and aesthetics. It is being developed in various ways.

In addition, lighting fixtures are installed on walls and ceilings in the interior spaces of buildings for functional or design purposes, and recently, lighting fixtures are being installed in the outdoor spaces of buildings as part of adding aesthetics.

However, most building owners and designers recognize interior and exterior finishing materials and lighting fixtures as separate building materials, and for this reason, lighting fixtures are only considered as objects for using light sources. Therefore, most lighting devices have limited use during the day, and perform their original role by turning on power at night. In particular, in relation to interior and exterior finishing materials, lighting fixtures are perceived as objects that must be installed harmoniously so as not to create a sense of heterogeneity.

Meanwhile, as a prior art document suggesting that an exterior wall finishing material can be used as a lighting fixture, Republic of Korea Patent No. 10-1016364 titled “Tile-type LED exterior wall finishing material for building equipment” (registered on February 14, 2011, hereinafter referred to as “prior art document”) ') has been proposed.

As shown in FIG. 1, the prior art document includes a body panel (1), a finishing material mounting panel (2), a light diffusion panel (3), a mesh panel (4), and a finishing material body portion (5), A main body panel (1) on which an LED (1a) is placed is provided on the finishing material mounting panel (2) that is coupled to the exterior wall of the building, and a light diffusion panel (3) and a mesh panel (4) are sequentially provided in the front, so that the LED ( In 1a), it was implemented so that the emitted light can be emitted while covering the LED element.

In particular, in the mesh panel 4 of the prior art document, a plurality of through holes 4a, which have a relatively large diameter and are immediately recognized, are formed, and a finishing material main body 5 is combined at the front to cover them, so that the overall tile It was proposed to be recognized as a type finishing material. That is, the finishing material main body 5 is recognized as a building finishing material by preventing the through hole 4a from being exposed to the outside during the day, and functions as a light cover when power is applied at night.

However, the finishing material main body 5 of the prior art document had to be made of a light-transmitting material, so the texture of the finishing material had to be limited, and during the day when power was not applied, the finishing material main body 5 was There were limitations in providing diversity of façades.

In addition, the prior art document states that in order to maintain the LED (1a) provided in the body panel (1), the finishing material body part (5) is separated from the finishing material mounting panel (2), and the mesh panel is again removed from the body panel (1). There was the inconvenience of having to sequentially separate (4) and the light diffusion panel (3).

Republic of Korea Patent No. 10-1016364 (registered on February 14, 2011)

The present invention was proposed to solve the above problems. When power is not applied, it is recognized as a louver or panel and functions as an interior/exterior finishing material of a building. When power is applied, light is transmitted and functions as a lighting fixture. The purpose is to obtain an interior and exterior effect that can provide a three-dimensional aesthetic without compromising the design integrity of the finishing materials.

In addition, another object of the present invention is to provide a hidden lighting fixture that is easy to assemble and manufacture by having a simplified fastening structure, can provide a simple design, and, above all, is easy to maintain.

In order to solve the above technical problem, the hidden lighting device (A) of the present invention is provided with an opening 110 at the bottom of the hollow frame 100, and a mounting portion 120 is formed on the inside to form a light emitting member 200. ) is mounted on the mounting body 210 of the light emitting member 200, and a PCB slot 211 and a cover slot 212 open at the bottom are formed sequentially, and a PCB panel ( 220) and a transparent cover 230 are provided, and a magnet bolt 240 is fastened to the upper part of the mounting body 210 to be detachably coupled to the magnetic mounting plate 250, and the light emitting member 200 A light diffusion panel 300 is coupled to the lower part to cover the opening 110, and a thin plate finishing material 400 having a plurality of micropores 410 is used to emit light that has passed through the light diffusion panel 300. It is characterized in that it is attached to cover the diffusion panel 300.

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In addition, a cable seating portion 213 communicating with a tapered fitting guide groove 213a may be formed at the upper center of the holding body 210 so that the cable CA can be inserted.

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In addition, the mounting portion 120 of the hollow frame 100 is formed with a pair of slide grooves 121 facing inward, so that the mounting plate 250 can be slide-coupled.

In addition, locking ribs 130 are formed to protrude inward on both sides of the opening 110 of the hollow frame 100, and the light diffusion panel 300 has insertion pieces 320 on both sides of the exposed surface 310. ) is formed, and a locking groove 321 is formed in the insertion piece 320 so that it can be engaged with the locking rib 130.

In addition, a plurality of micropores 410 formed in the thin plate finishing material 400 are arranged continuously at even intervals, the diameter (R) of the micropores 410 is 0.3 to 0.5mm, and the micropores 410 ) The ratio (d/R) of the distance (d) between adjacent micropores 410 to the diameter (R) may be formed to be 1.0 to 3.0.

Additionally, the ratio (t/R) of the thickness (t) to the diameter (R) of the micropores 410 may be formed to be 1.0 to 1.2.

Additionally, a suspension fastening rail 150 may be formed along the longitudinal direction at the top of the hollow frame 100.

According to the hidden lighting device of the present invention, a thin plate finishing material is attached to the lower part of the hollow frame, and when power is not applied, it is recognized as an indoor/outdoor finishing material such as a louver or panel that forms an indoor/outdoor finish, and when power is applied, it is recognized as an indoor/outdoor finishing material such as a louver or panel that forms an indoor/outdoor finish. The light emitted from the light emitting member passes through the light diffusion panel and the thin plate finishing material to function as a lighting device.

As a result, it is possible to provide a linear visual image at night without damaging the design integrity of the finishing material during the day, and depending on the embodiment, a three-dimensional image can be formed by selectively applying power, thereby creating an indoor and outdoor interior effect. can be maximized.

In particular, the thin plate finishing material can be manufactured using a variety of materials such as wood, aluminum, other metal materials, synthetic resin materials, and sheets, and in addition, various textures can be given to the same material, so it can create a variety of aesthetics as an indoor and outdoor finishing material. .

Furthermore, the present invention allows the light-emitting member to be assembled in advance and then slide-joined to the inside of the hollow frame, and the light-diffusing panel can be simply fitted to the lower part of the light-emitting member, thereby simplifying the process by not requiring separate piece assembly. It is easy to assemble and manufacture based on the fastening structure, and can provide a simple overall design.

Above all, even during maintenance, the light-emitting member can be disassembled using a slide method, which has the advantage of eliminating inefficiencies due to detachment and enabling quick and easy management.

In addition, in the present invention, a cable connected to the PCB panel is inserted into the upper center of the mounting body of the light emitting member to prevent it from being exposed, and the mounting body can be easily assembled by simply sliding it while attached to the mounting plate with a magnetic bolt. It has an easy effect.

In addition, the present invention allows the light diffusion panel to evenly diffuse the light transmitted from the light emitting member to provide homogenized lighting. In particular, in manufacturing thin plate finishing materials, the diameter and spacing of micropores are optimized to provide an observer with a single finishing material during the day. Although it is recognized as a light, it has the advantage of being able to function as lighting at night.

Figure 1 is an exploded perspective view showing the shape of a tile-type LED exterior wall finishing material for building facilities according to the prior art.
Figure 2 is a cross-sectional view showing the shape of a hidden lighting fixture according to an embodiment of the present invention.
Figures 3a and 3b are an exploded perspective view and a perspective view showing the shape of a hidden lighting fixture according to an embodiment of the present invention.
Figure 4 is an exploded cross-sectional view of a hidden lighting fixture according to an embodiment of the present invention.
Figure 5 is an exploded perspective view showing the light emitting member of a hidden lighting device according to an embodiment of the present invention.
Figure 6 is a coupling state diagram showing a state in which a mounting plate is provided and magnetically attached to a light emitting member of a hidden lighting device according to an embodiment of the present invention.
Figure 7 is a cross-sectional view showing a state in which a light emitting member is mounted on a hollow frame of a hidden lighting fixture according to an embodiment of the present invention.
Figures 8 and 9 are plan views and cross-sectional views showing the shape of the thin plate finishing material of a hidden lighting fixture according to an embodiment of the present invention.
Figures 10a and 10b are images showing a hidden lighting fixture with a wood texture according to an embodiment of the present invention in a state of use.
Figure 11 is an image showing a use state of a hidden lighting fixture provided with a metal texture according to an embodiment of the present invention.
12 to 14 are images showing a hidden lighting fixture in use according to various embodiments of the present invention.

Hereinafter, the hidden lighting device (A) of the present invention will be described in detail based on preferred embodiments based on the matters shown in the drawings.

The hidden lighting device (A) of the present invention is installed on walls, ceilings, and floors inside and outside of a building, and consists of a hollow frame (100), a light emitting member (200), a light diffusion panel (300), and a thin plate finishing material (400). It has the advantage of functioning as a finishing material for a building when configured and not powered, and at the same time being used as a lighting fixture when powered.

Hereinafter, the hidden lighting fixture (A) according to an embodiment of the present invention will be described in more detail with reference to FIGS. 2 to 4.

The hidden lighting fixture (A) according to an embodiment of the present invention has an opening 110 provided at the bottom of a hollow frame 100 formed long along the longitudinal direction, and a mounting portion 120 formed on the inside. A light emitting member 200 that emits light is mounted. At this time, a light diffusion panel 300 is provided at the lower part of the light emitting member 200 to cover the opening 110, and a thin plate having a plurality of micropores 410 is provided on the outer surface of the light diffusion panel 300. The finishing material 400 is attached.

Accordingly, when power is applied to the light emitting member 200, the light emitted from the light emitting member 200 passes through the light diffusion panel 300 and is evenly diffused, and passes through the micropores 410 of the thin plate finishing material 400. It is radiated in a homogenized state. On the other hand, in a state where power is not applied, the thin plate finishing material 400 is manufactured using various materials such as wood, aluminum, other metal materials, synthetic resin materials, and sheets, so various textures can be imparted to create a variety of aesthetics as an indoor/outdoor finishing material. can do.

In particular, the thin plate finishing material 400 has a thin thickness (t), and micropores 410 are formed, but are formed with a diameter (R) and spacing (d) that are not visually visible to the observer, so they are visible to the observer during the day. Although it is recognized as a finishing material, it has the advantage of being able to function as lighting because it can emit light at night.

On the other hand, the hidden lighting fixture (A) according to an embodiment of the present invention can be fastened to the ceiling of a building via a mount, and for this purpose, a mount fastening rail 150 is provided at the top of the hollow frame 100. It can be formed along any direction. Additionally, a shielding portion 140 may be formed at the top of the hollow frame 100 to cover the fastening portion of the suspension fastening rail 150 so that it is not exposed to the outside.

The suspension fastening rail 150 is formed by bending inward with a pair of fixing pieces 151 provided facing each other protruding upward, and a fixing part 152 with an open upper part between the fixing pieces 151. can be prepared. As a result, a pair of upper and lower nuts 20 can be fastened around the fixing piece 151 with the lower end of the computer bolt 10 provided in the fixing part 152 of the suspension fastening rail 150.

Meanwhile, in the hidden lighting device (A) of the present invention, the hollow frame 100 and the light diffusion panel 300 can be fitted and coupled to each other, as shown in FIG. 4. For this purpose, the hollow frame 100 has hooking ribs 130 protruding inward on both sides of the opening 110, and the light diffusion panel 300 has insertion pieces 320 on both sides of the exposed surface 310. ) is formed, and a locking groove 321 is formed on the outside of the insertion piece 320 so that it can be engaged with the locking rib 130. As a result, separate piece fastening can be omitted, making it easy to fit and connect, and the design is simple, so it can be recognized as a panel-type finishing material or a louver-type finishing material depending on the shape of the hollow frame when power is not applied. .

Hereinafter, the light emitting member 200 according to an embodiment of the present invention will be described in detail with reference to FIGS. 5 to 7.

The light emitting member 200 provided in the hidden lighting fixture (A) of the present invention is also manufactured to correspond to a louver type formed long along the longitudinal direction to correspond to the hollow frame 100 or to have a panel type. The main technical difference lies in the fact that the PCB panel 220 and the transparent cover 230 are coupled to the body 210 in a slide manner. As shown in Figure 5, the holding body 210 is sequentially formed with a PCB slot 211 and a cover slot 212 open at the bottom, respectively, and a PCB panel 220 equipped with an LED element 221 and a transparent The cover 230 may be slid and coupled.

At this time, the transparent cover 230 transmits the light emitted from the LED element 221 and can also perform the function of preventing the PCB panel 220 from being separated and protecting it from external shock.

On the other hand, the light emitting member 200 according to a preferred embodiment of the present invention has a problem in that the cable (CA) connected to the PCB panel 220 equipped with the LED element 221 is exposed to the outside, causing interference during the assembly and construction process. In order to solve this problem, a cable seating portion 213 may be formed in the upper center of the holding body 210 so that the cable CA connected to the PCB panel 220 is inserted and not exposed.

A tapered fitting guide groove 213a may be formed on the upper part of the cable seating groove 213 to allow the cable CA to be inserted, and may be formed to communicate with the cable seating portion 213. In addition, since the mounting plate 250, which will be described later, is attached to the upper part of the mounting body 210, interference due to the cable CA being exposed again during the assembly process can be resolved.

Additionally, according to one embodiment of the present invention, as shown in FIG. 6, the holding plate 250 may be magnetically coupled to the upper part of the holding body 210. For this purpose, magnetic bolts 240 are provided on both sides of the cable mounting portion 213 at the upper part of the mounting body 210, so that the mounting plate 250, which is a magnetic material, can be detachably coupled thereto.

As a result, it is possible to prevent loosening or separation of the connection due to loosening of the fastening part by omitting the fastening of the pieces due to the heat radiated from the light source during long-term use. It is also possible to assemble easily because the fastening of the separate pieces can be omitted, and the design allows for easy assembly. It has the advantage of being concise.

In particular, referring to FIG. 7, the mounting portion 120 of the hollow frame 100 is formed with a pair of slide grooves 121 facing inward, so that the mounting plate 250 can be slide-coupled.

That is, the PCB panel 220 and the transparent panel 230 are slide-coupled around the mounting body 210, the cable (CA) is inserted into the cable seating portion 213, and the mounting plate 250 is attached. The assembly of the light emitting member 200 is completed, and the pre-assembled light emitting member 200 can be easily assembled in a slide manner on the hollow frame 100 via the mounting plate 250 and the slide groove 121. .

As a result, the fastening structure of the hollow frame 100 and the light emitting member 200 is simplified, making installation easy. Above all, the light emitting member 200 can be disassembled using a slide method even during maintenance, reducing inefficiency due to detachment. It has the advantage of being able to be removed quickly and easily managed.

And, as shown in FIG. 8, the hidden lighting device (A) of the present invention is provided in the thin plate finishing material 400 so that the light radiated from the light emitting member 200 and transmitted through the light diffusion panel 300 and diffused can be homogenized. A plurality of micropores 410 may be continuously arranged at even intervals.

Hereinafter, an experimental example for deriving the specifications of the thin plate finishing material 400 according to a preferred embodiment of the present invention will be described. The length and width of the hollow frame 100 constituting the hidden lighting device (A) of the present invention are 3000 mm and 30 mm, respectively, and the light is radiated from the light emitting member 200 in a state in which the thin plate finishing material 400 is not attached and the light is diffused. The experiment was performed on the assumption that the illuminance of light passing through the panel 300 was 15.9 lux (lx) based on a position 3 m below.

First, when the hidden lighting device (A) is installed at a distance of 2 m from the observer's naked eye (standard 1.2 during calibration), when power is applied, the thin plate finishing material 400 made of aluminum with a thickness of 0.5 mm is visually visible. An experiment was conducted to determine whether a plurality of micropores 410 arranged continuously at even intervals on the thin plate finishing material 400 were visually recognized when power was not applied, and were summarized in Tables 1 and 2, respectively. . At this time, additional indirect lighting was placed so that the observer could observe the aluminum material in a state where no lighting was applied.

When power is applied to the hidden lighting fixture (A) Micropore diameter (mm) Aluminum material recognition 0.1 recognized 0.2 recognized 0.3 Doesn't recognize 0.4 Doesn't recognize 0.5 Doesn't recognize 0.6 Doesn't recognize 0.7 Doesn't recognize

When power is not applied to the hidden lighting fixture (A) Micropore diameter (mm) Whether micropores are recognized 0.1 Doesn't recognize 0.2 Doesn't recognize 0.3 Doesn't recognize 0.4 Doesn't recognize 0.5 Doesn't recognize 0.6 recognized 0.7 recognized

Accordingly, the diameter (R) of the micropores 410 formed in the thin plate finishing material 400 must be formed to have a size of 0.3 mm or more so that when power is applied to the hidden lighting device (A), the thin plate finishing material 400 It can be seen that the material is not visually revealed and can be recognized as a single light.

On the other hand, when the diameter (R) of the micropores 410 is 0.6 mm or more, the micropores 410 are identified with the observer's naked eye without power applied, and the material of the thin plate finishing material 400 is naturally recognized. You can see that it cannot be done.

In addition, while the conditions of the hidden lighting device (A) are the same as Table 1 and Table 2, the distance (d) between the micropores 410 and the thin plate finishing material (400) with respect to the diameter (R) of the micropores (410) Depending on the thickness (t), the illuminance of light when power is applied and whether the thin plate finishing material 400 is visually recognized when power is not applied were measured and summarized in Tables 3 and 4.

Illuminance (lx) according to the diameter (R) and spacing (d) of micropores Adjacent spacing (d, mm) 0.3 0.5 0.7 0.9 1.2 1.5 1.8 2.2 Diameter|Thickness
(R|t, mm) 0.3 14.1 13.6 12.8 11.4 9.5 7.4 5.7 4.2 0.4 14.4 14.1 13.7 12.7 11.5 9.7 8.5 7.2 0.5 14.9 14.2 13.9 13.3 12.3 11.1 9.8 9.0

Accordingly, the ratio (d/R) of the distance (d) between adjacent micropores (410) to the diameter (R) of the micropores (410) must be 3.0 or less to achieve the desired illuminance of 70% (11 lux) compared to the initial illuminance. It can be seen that more than (lx)) is secured, and on the other hand, when the adjacent spacing (d) is smaller than the diameter (R) of the micropores 410, the roughness is relatively improved, but deformation or tearing of the thin plate finishing material 400 occurs. There are limitations that make processing difficult.

Roughness (lx) according to the diameter of the micropores (R) and the thickness (t) of the thin plate finishing material (however, the spacing between adjacent micropores (d) is 0.5mm) Thickness (t, mm) 0.3 0.35 0.4 0.45 0.5 0.55 0.6 0.65 Diameter (R, mm) 0.3 13.6 11.4 10.2 9.4 8.5 7.4 5.7 4.2 0.4 - - 14.1 12.4 10.4 9.7 8.1 6.9 0.5 - - - - 14.2 12.5 11.0 9.8

In addition, if the thickness (t) of the thin plate finishing material 400 is 1.2 times or more compared to the diameter (R) of the micropore 410, it can be confirmed that it is difficult to secure the desired illuminance of 11 lux (lx) or more. On the other hand, if the thickness (t) is smaller than the diameter (R) of the micropores, the roughness will be relatively improved, but there is a limit that processing is difficult due to deformation or tearing of the thin plate finishing material 400.

In summary, the diameter (R) of the micropores 410 is 0.3 to 0.5mm, and the ratio of the distance (d) between adjacent micropores 410 to the diameter (R) of the micropores 410 (d/R) ) is preferably set to 1.0 to 3.0, and the ratio (t/R) of the thickness (t) of the thin plate finishing material 400 to the diameter (R) of the micropores 410 is preferably set to 1.0 to 1.2. can be seen.

Accordingly, according to the hidden lighting device (A) of the present invention, even if the thin plate finishing material 400 having micropores 410 is attached to the lower part of the hollow frame 100, indoor and outdoor finishing is formed in a state in which power is not applied. It can be recognized as a finishing material such as a louver or panel, and when power is applied, the light emitted from the light emitting member 200 passes through the light diffusion panel 300 and the thin plate finishing material 400 to provide homogenized light. It functions as a lighting fixture.

Meanwhile, According to the above description, the hidden lighting fixture (A) of the present invention is formed so that the hollow frame 100 extends along the longitudinal direction, and as shown in FIGS. 10A, 10B, and 11, it is installed on the ceiling or wall. It can be used to finish structures.

10A and 10B show that the thin plate finishing material 400 is manufactured to be recognized as wood with a soft texture, and the hidden lighting fixture (A) is an interior finishing material between a plurality of hidden lighting fixtures (A) as shown in FIG. 10A. Various design environments can be designed by arranging spaced apart or by placing interior finishing materials adjacent to each other between the plurality of hidden lighting fixtures (A) as shown in FIG. 10B and varying the height of the pedestal.

Additionally, as shown in FIG. 11, the thin plate finishing material 400 may be formed to have a metal-like texture, and may be manufactured to function as a panel finishing material as shown in FIGS. 12 to 14. As a result, when power is applied, it can function as a lighting fixture inside the building, and when power is not applied, the user perceives it as an interior and exterior finishing material installed in the building, which has the effect of maintaining design integrity. In addition, depending on the embodiment, a three-dimensional image can be formed by selectively applying power, thereby maximizing indoor and outdoor interior effects.

Meanwhile, it is preferable to use a material that can minimize deformation due to heat radiated from the light emitting member 200 as the thin plate finishing material 400, but since its outer surface can be formed to have various textures, the thin plate finishing material 400 ) material provides an optimized thickness (t) and the diameter (R) and spacing (d) of the micropores 410, and at the same time, if a certain adhesion force can be secured, it can be used as a sheet material as well as metal materials such as aluminum, zinc, and steel plates. It can be used in a variety of ways, such as wood and wood.

Those skilled in the art will understand that the hidden lighting device (A) described above can be implemented in other specific forms without changing the technical idea or essential features of the present invention.

Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the claims described later rather than the detailed description above, and the meaning and scope of the claims. And all changes or modified forms derived from the concept of equivalents should be construed as falling within the scope of the present invention.

A: Hidden lighting fixture 100: Hollow frame
110: Opening part 120: Holding part
121: slide groove 130: catching rib
150: Mounting rail 200: Light-emitting member
210: Holding body 211: PCB slot
212: cover slot 213: cable seating portion
213a: Fitting guide groove 220: PCB panel
221: LED element 230: Transparent cover
240: Magnet bolt 250: Holding plate
300: Light diffusion panel 310: Exposed surface
320: Insertion piece 321: Locking groove
400: Sheet plate finishing material 410: Micropores

Claims (9)

An opening 110 is provided at the bottom of the hollow frame 100, and a mounting portion 120 is formed on the inside to hold the light-emitting member 200. The mounting body 210 of the light-emitting member 200 is provided. A PCB slot 211 and a cover slot 212 open at the bottom are sequentially formed to provide a PCB panel 220 and a transparent cover 230 each equipped with an LED element 221, and the holding body 210 A magnetic bolt 240 is fastened to the upper part of the and is detachably coupled to the magnetic mounting plate 250.
A light diffusion panel 300 is coupled to the lower part of the light emitting member 200 to cover the opening 110, and has a plurality of micropores 410 so that the light passing through the light diffusion panel 300 is emitted. A hidden lighting device characterized in that a thin plate finishing material (400) is attached to cover the light diffusion panel (300).
delete According to paragraph 1,
A hidden lighting device, characterized in that a cable seating portion 213 is formed at the upper center of the mounting body 210 and communicates with a tapered fitting guide groove 213a so that the cable CA can be inserted.
delete According to paragraph 1,
A hidden lighting fixture characterized in that the mounting portion 120 of the hollow frame 100 is formed with a pair of slide grooves 121 facing inward so that the mounting plate 250 is slide-coupled.
According to paragraph 1,
Hooking ribs 130 are formed to protrude inward on both sides of the opening 110 of the hollow frame 100, and the light diffusion panel 300 has insertion pieces 320 on the upper sides of the exposed surface 310. A hidden lighting device characterized in that a locking groove (321) is formed in the insertion piece (320) and is engaged with the locking rib (130).
According to paragraph 1,
A plurality of micropores 410 formed in the thin plate finishing material 400 are arranged continuously at even intervals, the diameter (R) of the micropores 410 is 0.3 to 0.5mm, and the micropores 410 have a diameter (R) of 0.3 to 0.5mm. A hidden lighting device characterized in that the ratio (d/R) of the distance (d) between adjacent micropores (410) to the diameter (R) is 1.0 to 3.0.
In clause 7,
A hidden lighting device, characterized in that the ratio (t/R) of the thickness (t) to the diameter (R) of the micropores (410) is 1.0 to 1.2.
According to paragraph 1,
A hidden lighting fixture, characterized in that a suspension fastening rail (150) is formed along the longitudinal direction at the top of the hollow frame (100).