JP2005216860A - Lighting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device capable of generating soft and bright light while minimizing power consumption.
A plurality of front recesses (22) are formed on the back surface of a front light guide plate (2) that guides and emits light generated by a light source as the distance from the light source (7, 7a) increases. A plurality of back recesses (32) are formed on the front surface of the back light guide plate disposed on the back surface of the front light guide plate. The reflection plate (4) reflects light leaking through the rear light guide plate to the rear light guide plate. With this configuration, the light generated by the light source is converted into soft, bright and smooth light with no stimulus in the visual field.
[Selection] Figure 1

Description

  The present invention relates to a lighting fixture, and more particularly to a lighting fixture that minimizes power consumption and emits soft and bright light.

  In general, as a lighting fixture, a light source such as one or a plurality of fluorescent lamps or light bulbs is mounted inside a lamp cover made of a material such as plastic, and light is emitted to the outside through the lamp cover, Chandeliers that combine multiple light sources with decoration are known.

  Since the light from the light source is provided to the outside directly or indirectly through the lamp cover, there is a problem that the wavelength of light is short and bright within a certain distance, and becomes darker as the distance increases. In addition, since a plurality of light sources must be used to increase the brightness of light, there is a problem that power consumption increases. In addition, since the light from the light source flickers and is emitted to the outside, there is a problem that human eyes are easily fatigued when used for a long time.

  The lamp cover employed in a general lighting fixture is spaced apart from the light source at a constant interval to conceal the shape of the light source, so that the overall lighting fixture becomes thick. Thick luminaires are difficult to adopt in buildings with low ceilings, and there is a problem that their use is limited.

  In addition, the brightness of light is weakened due to the accumulation of residues generated by the entry of insects, etc. in the lamp cover provided in a general lighting fixture, and the lamp cover must be periodically disassembled and cleaned. It is complicated.

  The present invention has been made to solve such conventional problems, and an object thereof is to provide a luminaire that emits bright light with low power consumption. It is another object of the present invention to provide a lighting device that can increase the visible distance without causing fatigue to the eyes of the consumer and emits uniform light in all directions.

  In order to achieve the above-described object of the present invention, a lighting fixture according to an embodiment includes a light source, a front light guide plate, and a rear light guide plate. The front light guide plate has a back surface on which a plurality of front concave portions are formed deeper as the distance from the light source is increased. The light from the light source is guided and emitted. The back light guide plate has a front surface on which a plurality of back recesses are formed, is disposed on the back surface of the front light guide plate, and guides and emits light from the light source.

  It is preferable that the lighting fixture further includes a cover portion that covers the light source while being arranged in parallel with the longitudinal direction of the light source. Here, the cover part includes a support part that is screwed to physically connect the front light guide plate and the rear light guide plate, and a lamp cover that covers the light source while facing the support part, One feature is that the support portion and the lamp cover are magnetically coupled.

  In one example, an opening that is parallel to the longitudinal direction of the light source is formed in the cover, and the cover further includes a diffusing member that covers the opening.

It is preferable that the lighting fixture further includes a reflection plate that is disposed on a back surface of the back light guide plate and reflects light leaking through the back light guide plate to the back light guide plate.
In one example, the front recess and the back recess extend in the same direction. In one example, the front and back recesses cooperate to define an air layer.

  In one example, the front recess and the back recess extend in directions orthogonal to each other. In one example, the central axis of the light source is disposed on an extension line of a surface where the front light guide plate and the rear light guide plate are in contact. The total of the thickness of the front light guide plate and the thickness of the rear light guide plate is preferably the same as the diameter of the light source. It is desirable that the angle at the apex of the front recess is about 35 °. It is desirable that the vertex inner angle of the back recess is about 35 °.

  In one example, each of the plurality of first recesses is a groove extending in a direction orthogonal to the longitudinal direction of the light source, and each of the plurality of second recesses extends in a direction orthogonal to the plurality of first recesses, and is uniform. It is a groove having a depth and a uniform width.

  In one example, the plurality of first recesses and the plurality of second recesses are grooves extending in a direction orthogonal to the longitudinal direction of the light source, and the width and depth of each second recess are larger as they are farther from the light source.

  According to the lighting fixture of the present invention, unlike conventional lighting fixtures, it is a method of irradiating light from both sides of a transparent acrylic plate or the like, so that the light generated from the light source is stimulated to the observer's visual field. There can be no soft and bright smooth light (smooth light or evenness light).

(Example 1)
FIG. 1 is an exploded perspective view of a lighting fixture (planar light emitting device) according to a first embodiment of the present invention. FIG. 2 is a perspective view of the lighting fixture shown in FIG. 1, and FIG. 3 is an enlarged view showing a state in which the front and rear recesses in the horizontal and vertical directions are joined. FIG. 4 is a front view of the front light guide plate shown in FIG. FIG. 5 is a cross-sectional view taken along the line II ′ of the front light guide plate shown in FIG. 6 to 8 are cross-sectional views taken along II-II ′, III-III ′, and IV-IV ′ of the front light guide plate shown in FIG. FIG. 9 is a front view of the rear light guide plate shown in FIG. 10 is a cross-sectional view taken along the line VV ′ of the rear light guide plate shown in FIG. 11 is a cross-sectional view taken along IV-IV ′ of the rear light guide plate shown in FIG.

  Referring to FIGS. 1 to 11, the lighting apparatus according to the first embodiment of the present invention includes a front case 1, a front light guide plate 2, a rear light guide plate 3, a rear case 5, a first lamp 7, a second lamp 7a, and a reflection sheet. 4 includes an upper cover 61 and a lower cover 62. In this specification, the direction (z direction) in which the luminaire emits light may be referred to as “front”.

  The front case 1 is made of a transparent resin such as PMMA (polymethyl methacrylate). The front case 1 contains a front light guide plate 2, a rear light guide plate 3, a reflective sheet 4, a first lamp 7 and a second lamp 7 a, and is fastened to a rear case 5 disposed on the back side of the rear light guide plate 3. Thereafter, the upper cover 61 and the lower cover 62 outside the front case 1 and the rear case 5 are coupled.

  The front case 1 is made of a transparent resin and has a space-shaped insertion portion 12 formed in the center thereof. The front light guide plate 2, the rear light guide plate 3, the first lamp 7 and the second lamp 7a are inserted and installed. The front case 1 is formed with a rear case 5, a first screw fastening hole 13 and a second screw fastening hole 14 for assembling and joining the first screw 8 and the second screw 8a on the upper outer surface and the lower outer surface, respectively. The power cord 15 for supplying power to the outside is grounded while the first lamp 7 and the second lamp 7a are connected to the power source on the left and right inner side surfaces.

  As shown in FIGS. 4 and 5, the front light guide plate 2 has a plurality of front recesses 22 formed on the front surface 26 of the transparent resin plate body 11 so that light can be reflected. The plurality of front recesses 22 are arranged along the x-axis at regular intervals, that is, so as to be orthogonal to the longitudinal directions of the first lamp 7 and the second lamp 7a.

  Each front recess 22 is carved deeper toward the center of the main body 21 as shown in FIGS. Specifically, each front recess 22 has a first recess 23 that is both ends of each front recess 22 and a second recess 24 between the first recesses 23, and the first recess 23 and the second recess 24. Is gradually deeper toward the center of the main body 21. In the example of FIG. 5, the depth of the first recess 23 is linearly changed toward the center portion of the main body 21, and the depth of the second recess 24 is changed in a curve toward the center portion of the main body 21. Has been. Light transmitted from the first lamp 7 and the second lamp 7 a is uniformly reflected in all directions through the first recess 23 and the second recess 24. Thereby, soft and bright smooth light is radiated from almost the entire front surface of the front light guide plate 2.

  Since the second recess 24 arranged at a distance from the first lamp 7 and the second lamp 7a is the deepest, the bright light is forwarded by the deep recess despite being far from the first lamp 7 and the second lamp 7a. Radiated (in the z direction).

  As a result of the formation of the first recess 23 and the second recess 24, the outer surface portion of the frame of the front recess 22, that is, the front protrusion 25 is formed. Therefore, the front protrusion 25 is flush with the front surface of the front light guide plate 2. The front protrusion 25 serves to transmit light from the first lamp 7 and the second lamp 7a to a distance.

  The front recess 22 is formed at the top, bottom, left, and right ends of the front light guide plate 2 while maintaining a certain distance 27, 27a, 27b, and 27c to prevent irregular reflection of light provided from the front light guide plate 2 to the outside. To do.

  As shown in FIG. 9, the rear light guide plate 3 has a plurality of transparent resin main bodies 31 on the front surface 34 in a state of being arranged on the rear surface of the front light guide plate 2 so that light can be reflected by the front light guide plate 2. A back recess 32 is formed. The plurality of back recesses 32 are arranged along the y-axis at a constant interval, that is, in parallel with the first lamp 7 and the second lamp 7a. Each back recess 32 may have a uniform depth and a uniform width. (See Figs. 9 and 11)

  As shown in FIGS. 10 and 11, the back recess 32 is formed by cutting the front surface of the transparent resin main body 31 into a V shape. Light transmitted from the first lamp 7 and the second lamp 7a is strongly reflected through the back recess 32 and uniformly in all directions. As a result, strong light is transmitted to the front recess 22 of the front light guide plate 2.

  As a result of the formation of the back recess 32, the outer surface of the frame of the back recess 32, that is, the back protrusion 33 is formed. The rear protrusion 33 is flush with the front surface of the rear light guide plate 3. The rear protrusion 33 transmits light farther in the direction of the front light guide plate 2.

  Back recesses 32 are formed in the upper, lower, left, and right ends of the rear light guide plate 3 while maintaining a predetermined length of intervals 35, 35a, 35b, and 35c, and irregular reflection of light emitted from the rear light guide plate 3 to the outside. To prevent.

  A reflective sheet 4 that reflects light is attached to the rear surface of the rear light guide plate 3. The reflection sheet 4 reflects the light provided from the first lamp 7 and the second lamp 7 a and transmits the light to the rear light guide plate 3. The back surface of the reflection sheet 4 is made of a transparent resin in which a front case 1 and a first screw fastening hole 52 and a second screw fastening hole 53 that are coupled to the first screw 8b and the second screw 8c are formed vertically. The rear case 5 is arranged.

  The first screw 8b and the second screw 8c are assembled through the front case 1, the first screw fastening hole 52, and the second screw fastening hole 53, and aluminum or metal is formed on the outer surfaces of the end portions of the front case 1 and the back case 5. The lighting apparatus is manufactured by combining the upper cover 61 and the lower cover 62 made of material.

  Although FIG. 1 shows that both the light guide plates are arranged so that the front concave portion formed on the front light guide plate and the rear concave portion formed on the rear light guide plate are orthogonal to each other, the two light guide plates are formed on the front light guide plate. The front recess and the recess formed in the rear light guide plate may be parallel to each other.

  As described above, the brightness of light emitted to the outside can be maximized by irradiating the lamps on both sides of the transparent resin plate according to the first embodiment of the present invention. It is possible to uniformly provide soft light that does not tire the user's eyes. In addition, the visible distance can be increased, power consumption can be minimized, and the lighting device can be thinned.

(Example 2)
FIG. 12 is an exploded perspective view of a lighting fixture according to the second embodiment of the present invention. In particular, a luminaire having a plurality of front light guide plates and a plurality of back light guide plates is shown.

  Referring to FIG. 12, the luminaire according to the second embodiment of the present invention includes a front case 1, a first front light guide plate 2, a second front light guide plate 2a, a second rear light guide plate 3a, a rear case 5, and a first lamp 7. And the second lamp 7a, the reflection sheet 4, the upper cover 61 and the lower cover 62. The same components as those in FIG. 1 are given the same reference numerals, and detailed descriptions thereof are omitted.

  The second front light guide plate 2 a is disposed on the back surface of the first back light guide plate 3. The second back light guide plate 3a is disposed on the back surface of the second front light guide plate 2a. Smoother light can be emitted by the second front light guide plate 2a and the second rear light guide plate 3a.

  The front recess formed in the second front light guide plate 2a is parallel to the front recess formed in the first front light guide plate 2, and the back recess formed in the second back light guide plate 3a is the first recess. It is parallel to the back recess formed in the back light guide plate 3.

  FIG. 12 shows that the front recess formed in the first front light guide plate 2 and the back recess formed in the first back light guide plate 3 are orthogonal to each other. Further, the front concave portion and the rear concave portion formed in the first rear light guide plate 3 may be parallel to each other.

  In FIG. 12, the front recess formed in the second front light guide plate 2a and the back recess formed in the second rear light guide plate 3a are orthogonal to each other, but the front surface formed in the second front light guide plate 2a. The recess and the back recess formed in the second back light guide plate 3a may be parallel to each other.

(Example 3)
FIG. 13 is an exploded perspective view of a lighting fixture according to a third embodiment of the present invention. In particular, a lighting fixture having two front light guide plates is shown.

  Referring to FIG. 13, the luminaire according to the third embodiment of the present invention includes a front case 1, a first front light guide plate 2, a second front light guide plate 2a, a back case 5, a first lamp 7 and a second lamp 7a, and a reflection. The seat 4 includes an upper cover 61 and a lower cover 62. The same components as those in FIG. 1 are given the same reference numerals, and detailed description thereof is omitted.

  A front concave portion 22 formed in the horizontal direction is formed on the rear surface of the first front light guide plate 2, and a rear concave portion 22a formed in the horizontal direction is formed on the front surface of the second front light guide plate 22a. The front concave portion 22 and the rear concave portion 22a have shallower V-shaped concave portions as they are closer to the first lamp 7 and the second lamp 7a, and deeper V-shaped concave portions as they are farther from the first lamp 7 and the second lamp 7a. It is formed.

  The thickness of the first front light guide plate 2 and the second front light guide plate 2a is preferably equal to the thickness of the first lamp 7 or the thickness of the second lamp 7a. In addition, it is preferable that the central axes of the first lamp 7 and the second lamp 7a are disposed on an extension line of a surface where the first front light guide plate 2 and the second front light guide plate 2a are in contact with each other.

  In the above description, the lighting fixture is configured by arranging the front case and the rear case. However, as shown in FIG. 14, the lighting fixture can be arranged by arranging a separate frame without using the front case and the rear case. It can also be configured.

Example 4
FIG. 11 is an exploded perspective view of a lighting fixture according to the present invention. In particular, referring to FIG. 14, the lighting apparatus according to the fourth embodiment of the present invention includes a left frame 91, a right frame 92, a first front light guide plate 2, a first rear light guide plate 3, a second front light guide plate 2a, and a second frame. The rear light guide plate 3a, the first lamp 7 and the second lamp 7a, the reflection sheet 4, the upper cover 61 and the lower cover 62 are included. The same components as those in FIG. 1 are given the same reference numerals, and detailed descriptions thereof are omitted.
The left frame 91 and the right frame 92 include a cover and a support base.

The front light guide plate 2, the rear light guide plate 3, and the reflection sheet 4 are attached to the inner surfaces of the left frame 91 and the right frame 92 with the first lamp 7 and the second lamp 7 a inside the left frame 91 and the right frame 92. In the assembled state, the first screw 8d and the second screw 8e are coupled to the first screw fastening 63a and the second screw fastening portion 64a of the left frame 91 and the right frame 92 to manufacture a lighting fixture.
Of course, it is also possible to manufacture the lighting fixture by separately attaching decorations 93 and 94 to the outer surfaces of the left frame 91 and the right frame 92.

  FIG. 14 shows that the front light guide plate having the front recesses in the horizontal direction and the rear light guide plate having the rear recesses in the vertical direction are arranged. As described with reference to FIG. It is also possible to arrange a light guide plate, that is, two front light guide plates formed with a front recess formed in the horizontal direction.

  As described above, in the lighting fixtures according to the first to fourth embodiments of the present invention, the front light guide plate 2 has the front recess 22 and the front protrusion 25 and the rear light guide plate 3 has the rear recess. 32 and the rear protrusion 33 are formed, and the light emitted from the lamp by the reflection sheet 4 is converted into soft, uniform, bright and smooth light and emitted to the outside.

(Example 5)
FIG. 15 is a perspective view of a lighting fixture according to a fifth embodiment of the present invention. Referring to FIG. 15, the luminaire according to the fifth embodiment of the present invention includes a light guide part (LGP) arranged on the xy plane, while being arranged on both side edge parts of the light guide part (LGP). A storage portion (RCS) extending in the axial direction is included.

  The light guide part (LGP) is composed of two light guide plates that are overlapped with each other, and the light emitted from the storage part (RCS) is converted into softer and more uniform smooth light on the surface where each light guide plate contacts. In addition, it has a V-shaped groove perpendicular to the longitudinal direction of the storage part (RCS), that is, parallel to the light emitting direction. The V-shaped groove is shallower as it is closer to the lamp of the storage part (RCS) and deeper as it is farther from the storage part (RCS).

  The housing part (RCS) guides the lamp wire for supplying power supplied from the outside to the lamp, and fixes the lamp part to the edge part of the light guide part (LGP) while exposing a part of the lamp. Includes cover. The lamp may be a single-shaped lamp corresponding to an edge portion of the light guide portion (LGP), or may be a plurality of LEDs arranged corresponding to the edge portion of the light guide portion (LGP). . Although not shown, it is obvious that it further includes a power conversion device that converts a power supply provided from the outside into a lamp power supply. Of course, it is obvious that the power conversion device further includes a stabilization device.

  In FIG. 15, the storage unit (RCS) is disposed only on both side edge portions of the light guide unit (LGP), but the storage unit (RCS) is a back surface of the light guide unit (LGP). The light guide part (LGP) is housed and extended to expose the front part of the light guide part (LGP).

  The luminaire shown in FIG. 15 is fixed to a ceiling or the like through a wire (not shown) drawn in the −z-axis direction, and emits smooth light in the + z-axis direction.

  FIG. 16 is an exploded perspective view of a lighting fixture according to a fifth embodiment of the present invention. In particular, a luminaire having an edge lamp cover is shown. 17 is a cross-sectional view of the lighting fixture shown in FIG. 18 is an excerpt perspective view for explaining the front and back recesses shown in FIG. FIG. 18 is a schematic view of the light path by the luminaire shown in FIG.

  Referring to FIGS. 16 to 19, the lighting apparatus 100 according to the fifth embodiment of the present invention includes a first lamp 110, a second lamp 120, a front light guide plate 130, a rear light guide plate 140, a reflector 150, and a first cover part. 160 and the second cover part 170. For convenience of explanation, the first lamp 110 and the second lamp 120, the first cover part 160, and the second cover part 170 are relatively exaggerated.

  The first lamp 110 is disposed on one side of the front light guide plate 130, and the second lamp 120 is disposed on the other side of the front light guide plate 130. The first lamp 110 and the second lamp face each other with the front light guide plate 130 as a reference.

  The front light guide plate 130 is formed with a plurality of front recesses 132 formed on the rear surface as the distance from the first lamp 110 and the second lamp 120 disposed on the side increases, and the front light guide plate 130 is generated from the first lamp 110 and the second lamp 120. The emitted light is guided and emitted. A plurality of screw fastening holes for screw fastening are formed in both edge regions of the front light guide plate 130.

  As shown in FIG. 18, the front recess 132 becomes deeper as the distance from the lamp 110 increases. However, the inner angle (θ) of the apex of the front recess 132 is constant, and the front recess 132 forms a kind of triangular space. The inner angle (θ) of the apex may have various angles less than 180 °. Preferably, the inner angle (θ) of the vertex is 15 ° to 65 °. More preferably, the interior angle (θ) of the vertex is 35 °.

  The rear light guide plate 140 includes a plurality of rear concave portions 142 formed on the rear surface as the distance from the first lamp 110 and the second lamp 120 disposed on the side portion increases. The rear light guide plate 140 is generated from the first lamp 110 and the second lamp 120. The emitted light is guided and emitted to the front light guide plate 130. A plurality of screw fastening holes for screw fastening are formed in both edge regions of the rear light guide plate 140.

  As shown in FIG. 18, the back recess 142 is formed so as to become deeper as the distance from the lamp 110 increases while maintaining a constant vertex internal angle (θ). Since the back recess 142 defines a kind of triangular shape, the vertex internal angle (θ) may have various angles less than 180 °. Preferably, the above-mentioned vertex internal angle (θ) has an angle of 15 ° to 65 °. More preferably, the above-mentioned vertex internal angle (θ) has an angle of 35 °.

  As shown in FIG. 19, the front recess 132 and the rear recess 142 facing the front recess 132 cooperate to partition the air layer. Since the refractive index of the air layer is different from the refractive index of the front light guide plate 130 and the refractive index of the rear light guide plate 140, the light provided from the first and second lamps 110 and 120 is refracted to make the smoother smoother. Sexual light can be emitted.

  The reflector 150 is disposed on the rear surface of the rear light guide plate 140 and reflects light leaking through the rear light guide plate 140 to the rear light guide plate 140. It is obvious that a reflective sheet having flexible characteristics can be arranged instead of the above-described reflector.

  The first cover part 160 includes a first support part 162 and a first lamp cover 164. The first cover part 160 houses the first lamp 110 and couples the reflector 150, the rear light guide plate 140, and the front light guide plate 130 together. . The first support 162 and the first lamp cover 164 may be fastened using screws, hooks, or magnets. A plurality of screw fastening holes are formed in the first support part 162.

  Specifically, as shown in FIG. 17, a screw fastening hole for fastening with a screw inserted through the front light guide plate 130 is formed on the surface contacting the rear light guide plate 140 through the reflector 150. Is formed. Further, as shown in FIG. 17, a screw fastening hole for screw fastening with the front light guide plate 130 is formed through the rear light guide plate 140 at the protruding portion separated by a certain distance from the reflector 150. Accordingly, when the luminaire 100 is observed in the −z axis direction, the screw head and the main body are observed. However, when the luminaire 100 is observed in the z axis direction, the screw head and the main body are observed by the first lamp cover 164. Not.

  Although not shown, the first cover 160 stores a power supply device that supplies power to the first lamp 110 and a lamp wire that connects the power supply device and the first lamp 110.

  The second cover part 170 includes a second support part 172 and a second lamp cover 174. The second cover part 170 houses the second lamp 120 and couples the reflector 150, the rear light guide plate 140, and the front light guide plate 130. The second support part 172 and the second lamp cover 174 may be fastened using a screw, may be joined using a hook method, or may be fastened using a magnet. A plurality of screw fastening holes are formed in the second support part 172.

  Specifically, a screw fastening hole for fastening with a screw inserted through the front light guide plate 130 is formed on a surface contacting the rear light guide plate 140 through the reflection plate 150. Further, a screw fastening hole for fastening the screw with the front light guide plate 130 is formed through the rear light guide plate 140 at the protrusions spaced apart by a certain distance by the reflection plate 150. Accordingly, when the luminaire 100 is observed in the −z axis direction, the screw head and the main body are observed. However, when the luminaire 100 is observed in the z axis direction, the screw head and the main body are observed by the second lamp cover 174. Not.

  Although not shown, the second cover part 170 houses a power supply device that supplies power to the second lamp 120 and a lamp wire that connects the power supply device and the second lamp 120.

In FIG. 16, it has been described that the front recess 132 and the rear recess 142 extend in the same direction. However, the front recess 132 and the rear recess 142 may be arranged to be orthogonal to each other.
Since the lighting fixture according to the fifth embodiment of the present invention includes a reflector disposed on one side, it is preferable that the surface on which the reflector is disposed is used in close contact with a wall or ceiling of a building. .

(Example 6)
FIG. 20 is a perspective view of a lighting fixture according to a sixth embodiment of the present invention. Referring to FIG. 20, the luminaire according to the sixth embodiment of the present invention includes two light guide parts (LGP) arranged on an xy plane, and is disposed between the light guide parts (LGP) in the y-axis direction. A storage part (RCS) extended to The light guide part (LGP) is composed of two light guide plates that are overlapped with each other, and the light emitted from the storage part (RCS) is converted into softer and more uniform smooth light on the surface where each light guide plate contacts. In addition, a V-shaped groove is formed perpendicular to the longitudinal direction of the lamp portion (LP), that is, parallel to the light emission direction. The V-shaped groove is shallower as it is closer to the lamp of the storage part (RCS) and deeper as it is farther from the storage part (RCS).

  The storage unit (RCS) is a lamp, a lamp wire that supplies power supplied from the outside to the lamp, guides the lamp, and is fixed to an edge of the light guide unit (LGP) while exposing a part of the lamp. Including a cover part to be made. The lamp may be a single-shaped lamp corresponding to the edge of the light guide part (LGP), or may be a plurality of LEDs arranged corresponding to the edge of the light guide part (LGP). Although not shown, it is obvious that it further includes a power conversion device that converts a power supply provided from the outside into a lamp power supply. Of course, it is obvious that the power conversion device further includes a stabilization device.

  FIG. 20 illustrates that the storage unit (RCS) is disposed between the light guide units (LGP). However, the storage unit (RCS) is disposed on the back surface of the light guide unit (LGP), and It can also be implemented by expanding the light guide part (LGP) so that the front part of the light guide part (LGP) is exposed while housing the light guide part (LGP).

  The luminaire shown in FIG. 20 is fixed to a ceiling or the like through a wire (not shown) drawn in the −z-axis direction, and emits smooth light in the + z-axis direction.

  FIG. 21 is an exploded perspective view of a lighting fixture according to a sixth embodiment of the present invention. In particular, an example of a lighting fixture having a center type lamp cover is illustrated. 22 is a cross-sectional view of the lighting apparatus illustrated in FIG.

  Referring to FIGS. 21 and 22, a lighting fixture 200 according to a sixth embodiment of the present invention includes a lamp 210, a first front light guide plate 220, a second front light guide plate 230, a first rear light guide plate 240, and a second rear guide. An optical plate 250 and a cover 260 are included. For convenience of explanation, the lamp 210 and the cover part 260 are relatively exaggerated.

  The lamp 210 is disposed between the first front light guide plate 220 and the second front light guide plate 230, and is disposed between the first rear light guide plate 240 and the second rear light guide plate 250. The sum of the thickness of the first front light guide plate 220 and the thickness of the second front light guide plate 230 is preferably the same as the diameter of the lamp 210.

  A plurality of front recesses 222 are formed on the back surface of the first front light guide plate 220 and become deeper as the distance from the lamps 210 disposed on the side portions increases. The light generated by the lamps 210 is guided and emitted. A plurality of screw fastening holes for screw fastening are formed in an edge region of the first front light guide plate 220, that is, a region close to the lamp 210.

  A plurality of front recesses 232 are formed on the back surface of the second front light guide plate 230 so as to be farther away from the lamps 210 arranged on the side portions, and guide the light generated by the lamps 210. Exit. A plurality of screw fastening holes for screw fastening are formed in an edge region of the second front light guide plate 230, that is, a region close to the lamp.

  A plurality of back recesses 242 are formed on the back surface of the first back light guide plate 240 so as to be farther away from the lamps 210 disposed on the side portions, and guide light generated by the lamps 210. To the first front light guide plate 220. A plurality of screw fastening holes for screw fastening are formed in an edge region of the first rear light guide plate 240, that is, a region close to the lamp.

A plurality of back recesses 252 are formed on the back surface of the second back light guide plate 250 so as to be farther away from the lamps 210 disposed on the side portions, and guide light generated by the lamps 210. To the second front light guide plate 230. A plurality of screw fastening holes for screw fastening are formed in an edge region of the second rear light guide plate 250, that is, a region close to the lamp.
The first front recess 222 formed in the first front light guide plate 220 and the first back recess 242 formed in the first rear light guide plate 240 cooperate to partition the air layer. Accordingly, since the refractive index of the air layer is different from the refractive index of the first front light guide plate 220 and the refractive index of the first rear light guide plate 240, the light provided from the lamp 210 is refracted to be softer. Smooth light is emitted.

  Also, the second front recess 232 formed in the second front light guide plate 230 and the second back recess 252 formed in the second rear light guide plate 250 cooperate to partition the air layer. Since the refractive index of the air layer is different from the refractive index of the second front light guide plate 250 and the refractive index of the second rear light guide plate 250, the light provided from the lamp 210 is refracted to provide a softer smoothness. Light is emitted.

  The cover part 260 includes a support part 262 and a lamp cover 264. The cover part 260 houses the lamp 210, joins the first back light guide plate 240 and the first front light guide plate 220, and connects the second back light guide plate 250 and the second back light guide plate 250. The front light guide plate 230 is coupled. Each of the support 262 and the lamp cover 264 is formed with an opening that extends parallel to the longitudinal direction of the lamp 210. The light emitted from the lamp 210 through the opening is emitted to the outside through the opening.

  The support 262 and the lamp cover 264 can be fastened using a screw, can be joined using a hook method, or can be fastened using a magnet. The support part 262 is formed with a plurality of screw fastening holes.

  Specifically, as shown in FIG. 21, screws that are inserted through the first and second front light guide plates 220 and 230 on the surfaces that contact the first and second rear light guide plates 240 and 250, respectively. A screw fastening hole for fastening is formed.

  Further, as shown in FIG. 21, the first and second rear light guide plates 240 and 250 are spaced apart from each other by a first and second rear light guide plates 240 and 250. 2 Screw fastening holes for screw fastening with each of the front light guide plates 220 and 230 are formed.

  Accordingly, when the lighting apparatus 200 is observed in the −z-axis direction, the screw head and the main body are observed. However, when the lighting apparatus 200 is observed in the z-axis direction, the screw cover and the main body are not observed by the lamp cover 262.

  Although not shown, the cover 260 stores a power supply device that supplies power to the lamp 210, and a lamp wire that connects the power supply device and the lamp 210.

  FIG. 23 is a rear perspective view for explaining the lamp cover shown in FIG. Referring to FIG. 23, the lamp cover 264 includes a main body part 264a, first and second guide parts 264c, 264d, a first magnet 264e, a screw 264f, and a diffusion plate 264g.

  An opening 264b is formed in the main body 264a so as to be adjacent to the vertical ends of the first and second guide portions 264c and 264d. The opening 264b extends parallel to the longitudinal direction of the lamp 210. The main body 264a is made of a material that blocks transmission of light, such as aluminum. Due to the formation of the opening 264b, the light emitted from the lamp 210 is emitted to the outside through the main body 264a.

  The first and second guide portions 264c and 264d are disposed in the edge region of the main body portion 264a in parallel with each other. The first and second guide portions 264c and 264d serve as a screw thread of the screw 264f to be tightened later.

  A hole is formed in the first magnet 264e. A screw is inserted through the hole and fastened to the first and second guide portions 264c and 264d. The support 262 may include a second magnet corresponding to the first magnet 264e.

  The diffusion plate 264g is disposed in an opening 264b formed in the main body 264a. Two guide grooves are formed in one edge region of the diffusion plate 264g, and are fitted into the first and second guide portions 264c and 264d. Of course, two guide grooves are also formed in the other edge region of the diffusion plate 264g. Although FIG. 21 illustrates that the rigid-type diffusion plate is arranged corresponding to the opening, a flexible diffusion sheet may be arranged corresponding to the opening.

  According to the lighting apparatus according to the sixth embodiment of the present invention, smooth light is emitted through the first and second front light guide plates and the first and second rear light guide plates. It is preferably used as a chandelier that is spaced apart. When used as the chandelier, it is preferable that the power supply device housed in the cover part is detached and attached to a member such as a ceiling, and only the lamp wire is pulled out and connected to the lamp.

(Example 7)
FIG. 24 is an exploded perspective view of a lighting fixture according to a seventh embodiment of the present invention. In particular, another example of a lighting fixture having a center type lamp cover is illustrated. 25 is a cross-sectional view of the lighting fixture illustrated in FIG.

  Referring to FIGS. 24 and 25, a lighting apparatus 300 according to a seventh embodiment of the present invention includes a lamp 210, a first front light guide plate 220, a second front light guide plate 230, a first rear light guide plate 240, and a second rear guide. An optical plate 250, a reflective plate 360, and a cover portion 370 are included. For convenience of explanation, the lamp 210 and the cover part 370 are shown relatively exaggerated, and when compared with FIG. .

  The reflector 360 is disposed on the back of the first and second rear light guide plates 240 and 250, and light leaking through the first and second rear light guide plates 240 and 250 is provided on the first and second rear light guide plates. Reflects 240 and 250.

  The cover part 370 includes a support part 372 and a lamp cover 374. The cover part 370 houses the lamp 210, joins the first back light guide plate 240 and the first front light guide plate 220, and connects the second back light guide plate 250 and the second back light guide plate 250. The front light guide plate 230 is coupled. The support portion 372 and the lamp cover 374 can be fastened using a screw, can be joined using a hook method, or can be fastened using a magnet. A plurality of screw fastening holes are formed in the support portion 372.

  According to the above-described lighting fixture according to the seventh embodiment of the present invention, since the reflecting plate is disposed on one side, the surface on which the reflecting plate is disposed is preferably used in close contact with the wall or ceiling of the building.

(Example 8)
FIG. 26 is a perspective view of a lighting fixture according to an eighth embodiment of the present invention. Referring to FIG. 26, the luminaire according to the eighth embodiment of the present invention extends in the y-axis direction while being disposed between the light guide part (LGP) disposed on the xy plane and between the light guide parts (LGP). Storage part (RCS).

  The light guide part (LGP) is composed of two light guide plates that are overlapped with each other, and the light emitted from the storage part (RCS) is converted into softer and more uniform smooth light on the surface where each light guide plate contacts. In addition, a V-shaped groove is formed perpendicular to the longitudinal direction of the lamp portion (LP), that is, parallel to the light emission direction. The V-shaped groove is shallower as it is closer to the lamp of the storage part (RCS) and deeper as it is farther from the storage part (RCS).

  The storage unit (RCS) is a lamp, a lamp wire that supplies power supplied from the outside to the lamp, guides the lamp, and is fixed to an edge of the light guide unit (LGP) while exposing a part of the lamp. Including a cover part to be made. The lamp may be a single-shaped lamp corresponding to the edge of the light guide part (LGP), or may be a plurality of LEDs arranged corresponding to the edge of the light guide part (LGP). Although not shown, it is obvious that it further includes a power conversion device that converts a power supply provided from the outside into a lamp power supply. Of course, it is obvious that the power conversion device further includes a stabilization device.

  FIG. 26 shows that the storage unit (RCS) is disposed only at one edge portion of the light guide unit (LGP). However, the storage unit (RCS) is a back surface of the light guide unit (LGP). The light guide part (LGP) is housed in an extended manner so as to expose the front part of the light guide part (LGP).

  When a wire (not shown) is pulled out in the −z-axis direction to the lighting apparatus shown in FIG. In addition, when a wire (not shown) is pulled out in the −x axis direction to the lighting apparatus shown in FIG. 26, it is fixed to the ceiling or the like, and smooth light is emitted in the + x axis direction, the + z axis direction, and the −z axis direction. Diverge.

FIG. 27 is an exploded perspective view of a lighting fixture according to an eighth embodiment of the present invention. In particular, an example of a luminaire having an edge-type lamp cover is illustrated. Referring to FIG. 27, a lighting fixture 400 according to an eighth embodiment of the present invention includes a lamp 410, a front light guide plate 420, a rear light guide plate 430, and a cover part 440. For convenience of explanation, the lamp 410, the front light guide plate 420, the rear light guide plate 430, and the cover portion 440 are relatively exaggerated.
The lamp 410 is disposed on one side of the front light guide plate 420.

  The front light guide plate 420 has a plurality of front concave portions 422 formed on the back surface, the depth of the front light guide plate 420 being increased as the distance from the lamp 410 disposed on the side is increased, and guides and emits the light generated by the lamp 410. . A plurality of screw fastening holes for screw fastening are formed in the edge region of the front light guide plate 420.

  The back light guide plate 430 is formed with a plurality of back recesses 432 that increase in depth as the distance from the lamp 410 disposed on a side increases. The back light guide plate 430 guides the light generated by the lamp 410 to the front surface. The light is emitted to the light guide plate 420. A plurality of screw fastening holes for screw fastening are formed in both edge regions of the rear light guide plate 420.

  The front recess 422 and the back recess 432 cooperate to partition the air layer. Since the refractive index of the air layer is different from the refractive index of the front light guide plate 420 and the refractive index of the rear light guide plate 430, the light provided from the lamp 410 is refracted to emit softer smooth light.

  In FIG. 27, it has been described that the front recess 422 and the back recess 432 are extended in the same direction, but they may be arranged to be orthogonal to each other.

  The cover part 440 includes a support part 442 and a lamp cover 444. The cover part 440 houses the lamp 410 and connects the rear light guide plate 430 and the front light guide plate 420. The support portion 442 and the lamp cover 444 can be fastened using a screw, can be joined using a hook method, or can be fastened using a magnet. A plurality of screw fastening holes are formed in the support portion 442.

  Specifically, a screw fastening hole for fastening with a screw inserted through the front light guide plate 420 is formed on a surface in contact with the rear light guide plate 430. In addition, a screw fastening hole for screwing the front light guide plate 420 to the front light guide plate 420 is formed through the rear light guide plate 430 in the protruding portion that is spaced apart by a certain distance on the rear light guide plate 430. Accordingly, when the luminaire 400 is observed in the −z-axis direction, the screw head and the main body are observed, but when the luminaire 400 is observed in the z-axis direction, the screw head and the main body are not observed by the lamp cover 444.

  Although not shown, the cover 440 stores a power supply device that supplies power to the lamp 410 and a lamp wire that connects the power supply device and the lamp 110.

  According to the lighting apparatus according to the eighth embodiment of the present invention, since smooth light is emitted through the front light guide plate and the rear light guide plate, it can also be used as a chandelier, such as a corner portion where the wall and the ceiling meet. It can also be arranged and used.

Example 9
FIG. 28 is an exploded perspective view of a lighting fixture according to a ninth embodiment of the present invention. In particular, an example of a luminaire having a stand-type lamp cover is illustrated. Referring to FIG. 28, a lighting fixture 500 according to a ninth embodiment of the present invention includes a lamp 510, first, second, third, and fourth lighting members 522, 524, 526, 528, first, second, Third and fourth coupling members 532, 534, 536, 538, and a plurality of screws 540 are included. For convenience of explanation, the lamp 510 and the first to fourth coupling members 532, 534, 536, and 538 are relatively exaggerated. The lamp 510 is disposed in parallel with the z-axis.

  The first to fourth lighting members 522, 524, 526, and 528 are disposed to correspond to the main body of the lamp 510. Although not shown, each of the first to fourth illumination members 522, 524, 526, and 528 includes two light guide plates, and concave portions are formed on the surfaces of the light guide plates that are in contact with each other. The recess is formed in the normal direction of the lamp 510. The concave portion is a V-shaped groove that is shallower as it is closer to the lamp 510 and deeper as it is farther from the lamp 510.

  The first, second, third, and fourth coupling members 532, 534, 536, and 538 are disposed between adjacent illumination members 522, 524, 526, and 528, respectively.

  The plurality of screws 540 may be fastened to the lighting member through the coupling member described above, or may be fastened to the coupling member facing through the coupling member and the lighting member.

  In FIG. 28, it has been described that the luminaire has four illuminating members orthogonal to each other. However, the luminaire can be embodied to have three illuminating members, and the luminaire has five or more luminaires. It can also be implemented to have.

  FIG. 29 is a perspective view of a lighting fixture according to a tenth embodiment of the present invention. Referring to FIG. 29, a lighting fixture according to a tenth embodiment of the present invention includes three light guide parts (LGP) arranged on an xy plane, and is disposed between the light guide parts (LGP) in the y-axis direction. The two storage parts (RCS) extended to the center.

  The three light guide parts (LGP) are composed of two light guide plates that overlap each other, and light emitted from the lamp of the storage part (RCS) is softened and evenly smoothed on the surface where each light guide plate contacts. Therefore, a V-shaped groove perpendicular to the longitudinal direction of the lamp, that is, parallel to the light emitting direction is formed. The V-shaped groove is shallower as it is closer to the lamp of the storage part (RCS) and deeper as it is farther from the storage part (RCS).

  The storage unit (RCS) is a lamp, a lamp wire that supplies power supplied from the outside to the lamp, guides the lamp, and is fixed to an edge of the light guide unit (LGP) while exposing a part of the lamp. Including a cover part to be made. The lamp may be a single-shaped lamp corresponding to the edge of the light guide part (LGP), or may be a plurality of LEDs arranged corresponding to the edge of the light guide plate (LGP). Although not shown, it is obvious that it further includes a power conversion device that converts a power supply provided from the outside into a lamp power supply. Of course, it is obvious that the power conversion device further includes a stabilization device.

In FIG. 29, the storage unit (RCS) is disposed between the light guide units (LGP). However, the storage unit (RCS) is disposed on the back surface of the light guide unit (LGP), and It can also be implemented by expanding the light guide part (LGP) so that the front part of the light guide part (LGP) is exposed while housing the light guide part (LGP).
29, when a wire (not shown) is pulled out in the −z-axis direction, the lighting fixture is fixed to the ceiling or the like, and emits smooth light in the + z-axis direction.

  As mentioned above, although the Example of this invention was described in detail, this invention is not limited to this, As long as it has normal knowledge in the technical field to which this invention belongs, without leaving the idea and spirit of this invention, The present invention can be modified or changed.

The illuminating device according to the present invention can convert the light from the light source into a soft and uniform smooth light without being stimulated by the front concave portion of the front light guide plate. Therefore, it is possible to solve the problems of the prior art, such as the short wavelength of light, the bright light only within a certain distance, and the darker the light diverges.
In addition, since light is uniformly provided to the outside, it is possible to solve the problems of the prior art such as a part being bright and a part being dark.

  Further, the light from the light source can be provided strongly and brightly to the outside by the back recess of the back light guide plate. In addition, by configuring the front concave portion of the front light guide plate in the horizontal direction and connecting the rear concave portion of the rear light guide plate in the vertical direction, the brightness of the light emitted from the light source is not reduced, and in all directions. Light is emitted uniformly.

  Since it is possible to prevent the luminance of light from being reduced, power consumption can be reduced. Further, since the lighting fixture can be made slim, it can contribute to the increase of the number of building layers of the building and the reduction of the construction cost.

1 is an exploded perspective view of a lighting fixture according to a first embodiment of the present invention. FIG. 2 is a combined perspective view of the lighting apparatus illustrated in FIG. 1. It is an enlarged view which shows the coupling | bonding state of the front recessed part of a horizontal direction, and the back recessed part of a vertical direction. It is a front view of the front light-guide plate shown in FIG. FIG. 5 is a cross-sectional view taken along I-I ′ of the front light guide plate shown in FIG. 4. FIG. 6 is a cross-sectional view taken along II-II ′ of the front light guide plate shown in FIG. 4. FIG. 5 is a cross-sectional view taken along III-III ′ of the front light guide plate shown in FIG. 4. FIG. 5 is a cross-sectional view taken along the line IV-IV ′ of the front light guide plate shown in FIG. 4. It is a front view of the back light-guide plate shown in FIG. FIG. 10 is a cross-sectional view taken along V-V ′ of the rear light guide plate illustrated in FIG. 9. FIG. 10 is a cross-sectional view taken along IV-IV ′ of the rear light guide plate illustrated in FIG. 9. It is a disassembled perspective view of the lighting fixture by 2nd Example of this invention. In particular, it shows that a plurality of front light guide plates and a plurality of rear light guide plates are used. It is a disassembled perspective view of the lighting fixture by 3rd Example of this invention. It is a disassembled perspective view of the lighting fixture by 4th Example of this invention. It is a schematic perspective view of the lighting fixture by 5th Example of this invention. It is a disassembled perspective view of the lighting fixture by 5th Example of this invention. It is sectional drawing of the lighting fixture shown in FIG. It is the excerpt perspective view for demonstrating the front surface recessed part and back surface recessed part shown in FIG. It is the schematic explaining the optical path by the lighting fixture shown in FIG. 16 notionally. It is a schematic perspective view of the lighting fixture by 6th Example of this invention. It is a disassembled perspective view of the lighting fixture by 6th Example of this invention. It is sectional drawing of the lighting fixture shown in FIG. It is a back perspective view for demonstrating the lamp cover shown in FIG. It is a disassembled perspective view of the lighting fixture by 7th Example of this invention. It is sectional drawing of the lighting fixture shown in FIG. It is a schematic perspective view of the lighting fixture by 8th Example of this invention. It is a disassembled perspective view of the lighting fixture by 8th Example of this invention. It is a disassembled perspective view of the lighting fixture by 9th Example of this invention. It is a schematic perspective view of the lighting fixture by 10th Example of this invention.

Explanation of symbols

1 Front case 2, 2a, 130, 220, 230 Front light guide plate 3, 3a, 140, 240, 250 Back light guide plate 4 Reflective sheet 5 Back case 6, 61, 62 Cover 7, 7a, 110, 120, 210, 510 Light source 8, 8 a, 8 b, 8 c, 8 d, 8 e Screw 9 Frame 10 Lighting fixture 12 Insertion part 13, 14, 52, 53, 63, 63 a, 64, 64 a Screw fastening hole 22, 22 a Front recess 23 Front first recess 24 Front second recess 25, 25a Front protrusion 31 Main body 32, 32a Rear recess 33, 33a Back protrusion 65 Power cord 91 Left frame 92 Right frame 93, 94 Decoration 150, 360 Reflector 160, 170, 260, 440 Cover 522, 524, 526, 528 Lighting member 532, 534, 536, 538 Connecting member

Claims (12)

A light source;
A front light guide plate that is disposed on the side of the light source and has a back surface formed with a plurality of front recesses that are deeper away from the light source, and guides and emits light from the light source;
A rear light guide plate disposed on the side of the light source so as to face the back surface of the first light guide plate, having a front surface formed with a plurality of back recesses, and guiding and emitting light from the light source. A lighting apparatus characterized by that.   The lighting apparatus according to claim 1, further comprising a cover portion that covers the light source while being arranged in parallel with a longitudinal direction of the light source.   The cover part includes a support part that is screwed to physically connect the front light guide plate and the rear light guide plate, and a lamp cover that covers the light source while facing the support part. The lighting apparatus according to claim 2, wherein the lamp cover and the lamp cover are magnetically coupled.   The lighting device according to claim 3, wherein the cover portion further includes an opening portion parallel to a longitudinal direction of the light source, and a diffusion member that covers the opening portion.   The lighting apparatus according to claim 1, further comprising a reflector disposed on a rear surface of the rear light guide plate and configured to reflect light leaking through the rear light guide plate to the rear light guide plate.   The lighting apparatus according to claim 1, wherein the front recess and the rear recess extend in the same direction.   The lighting apparatus according to claim 1, wherein the front concave portion and the rear concave portion cooperate to partition an air layer.   The lighting apparatus according to claim 1, wherein the first recess and the back recess extend in directions orthogonal to each other.   The lighting apparatus according to claim 1, wherein a central axis of the light source is disposed on an extension line of a surface where the front light guide plate and the rear light guide plate are in contact with each other.   The lighting fixture according to claim 1, wherein the total of the thickness of the front light guide plate and the thickness of the rear light guide plate is the same as the diameter of the light source.   The lighting device according to claim 1, wherein an angle at an apex of the front recess is about 35 °.   The lighting fixture according to claim 1, wherein an inner corner angle of the back recess is about 35 °.

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