JP2014207168A - Illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination device which illuminates not only under the illumination device but also in the front direction of the illumination device, which radiates light in a wide range by using a light guide plate in place of a reflection plate and which can perform an excellent appearance.SOLUTION: As light made incident from an incident end surface is mainly diffused by a plurality of diffusion dots provided on a light guide member 40, the light is radiated from a first plane part, a curved part and a second plane part, and light can be radiated to a wide range from a front surface side to a direction obliquely lower backward. In this way, one illumination device 20 can play both a role of a direct illumination to the front surface side and a role of an indirect illumination by the light reflected on a rear wall surface and the like. At this time, as the first plane part and the second plane part are smoothly connected by the curved part, light having a soft impression can be radiated continuously, and an excellent appearance can be given.

Description

  The present invention relates to a lighting device.

  Conventionally, various types of lighting devices that can illuminate the lower part are known. For example, Patent Document 1 discloses a plate-shaped cylindrical bracket that includes a light source unit disposed on the lower surface side of the end portion of a plate-like member and includes a reflecting plate for irradiating light from the light source unit downward as indirect light. An illumination device is described that is secured with screws at the ends of the member. In this illuminating device, the light emitted from the light source unit is reflected by the reflecting plate provided on the cylindrical bracket, so that the light emitting surface of the light source unit is directed forward and below the end of the plate member. be able to.

JP 2012-38604 A

  However, in such an illuminating device, although the lower part can be illuminated by reflecting the light from a light source with a reflecting plate, there exists a subject that the front part cannot be illuminated. In addition, since the direction in which light is reflected is limited to one direction, there is a problem that it is impossible to irradiate light in multiple directions or produce an aesthetic appearance according to the direction of light irradiation. Furthermore, since the light from the light source is reflected by the reflecting plate, there is a problem that the aesthetic appearance is impaired by the reflecting plate.

  The present invention has been made in view of such a problem. In addition to illuminating not only the lower part of the lighting device but also the front direction of the lighting device, a light guide plate is used in place of the reflecting plate, thereby irradiating light over a wide range. In addition, the main object is to provide an illumination device that can produce an excellent aesthetic appearance.

  The present invention adopts the following means in order to achieve the main object described above.

The lighting device of the present invention is
A lighting device provided below a storage unit capable of taking in and out stored items from the front side,
A body portion attachable to the lower surface of the storage portion;
A plurality of light sources attached to the main body,
A light guide member that is attached to the main body and diffuses light emitted from the light source incident from the incident end surface with a plurality of diffusion dots or diffusion convex portions provided on one main surface, and emits the light.
With
The light guide member diffuses the light in the front direction and emits the first flat part, a curved part that curves backward from the lower direction of the first flat part, and the light downward or obliquely downward And a second flat surface portion that diffuses and emits in the direction.

  In this lighting device, light incident from the incident end surface of the light guide member is diffused by a plurality of diffusion dots or diffusion convex portions provided on the light guide member, so that the light is guided to the other main surface side of the main surface. And is emitted from the other main surface. At this time, the light guide member diffuses the incident light in the front direction because the other main surface side faces the front direction, and emits the first flat portion and the other main surface side in the downward direction or the diagonally rearward direction. Because it has a second plane part that diffuses and emits light that is incident downward or obliquely rearwardly downward, the light emitted from the light guide member is lower or lower than the front direction. The light is emitted in a wide range of oblique rear directions, and can illuminate both the front direction and the lower oblique rear direction. By doing so, light can be illuminated over a wide range from the front direction to the diagonally backward direction. In addition, when the rear of the storage unit to which the lighting device is attached is a wall surface, the light illuminated in the front direction has a direct illumination function, and the light illuminated in the diagonally backward direction is reflected on the wall surface. By having a function as indirect illumination, it is possible to have both direct illumination and indirect illumination functions. Furthermore, since it has the curved curved part between the 1st plane part and the 2nd plane part, light can be radiate | emitted to the shape of the curved surface of a curved part, and the outstanding aesthetics can be given. it can. By providing the curved portion in this way, for example, when there is an acute angle between the first plane portion and the second plane portion, a strong line of light or strong light emitted in an acute angle direction ( Glare) may occur, but by providing a curved portion, such a possibility can be reduced in advance. In addition, the aesthetic appearance produced by light can be changed to a desired one by making the bending angle of the bending portion gentle or steep. In other words, it is possible to increase the degree of freedom of the aesthetic appearance that is produced.

  In the illumination device according to the aspect of the invention, the second flat surface portion includes an extending portion that curves and extends in the direction of the first flat surface portion, and the main body portion supports the extended portion from below. The light guide member may be attached to the main body portion by supporting a main surface of the extension portion by the support surface. If it carries out like this, a light guide member can be positioned in the desired position of a main-body part by simple operation | movement which arrange | positions an extension part on the support surface provided in the main-body part. In other words, the labor when attaching the light guide member to the main body can be reduced.

  In the illumination device of the present invention, the end surface of the first flat surface portion may be located above the lower surface of the storage portion. By so doing, at least a part of the main surface of the first flat surface portion is positioned above the lower surface of the storage portion, so that light can be emitted above the lower surface of the storage portion.

  The illuminating device of this invention WHEREIN: At least one part of the end surface on the opposite side to the said incident end surface of the said light guide member may face the direction of the said accommodating part. If it carries out like this, a part of light which injected into the light guide member from the incident end surface will pass through a light guide member, and will be irradiated to the direction of an accommodating part from the end surface on the opposite side to an incident end surface. For this reason, since not only the exterior of a storage part but the inside of a storage part can be illuminated, the convenience of a storage part can be improved.

  In the illumination device of the present invention, the first flat surface portion may be characterized in that one end side is curved toward the one main surface side. In this way, not only the end surface opposite to the incident end surface but also the light emitted from the main surface can be guided to the inside of the storage unit, so that the storage unit is more in comparison with the case where the light is emitted from the end surface. The interior can be brightened, and the convenience of the storage portion can be improved.

  The illuminating device of this invention WHEREIN: The said some light source is good also as arrange | positioning in the position which respectively opposes the both end surfaces of the said light guide member. If it carries out like this, it can be made bright compared with the case where a light source is arrange | positioned in the position facing either end surface of a light guide member.

  In the illumination device of the present invention, the light source may be a planar light emitting diode. By doing so, it is possible to reduce the power consumption of the light source as compared with the incandescent bulb, which contributes to power saving. In addition, since the light source can be downsized, the overall size of the lighting device can be reduced, and can be easily attached even in a narrow space.

FIG. 1 is a perspective view showing a state in which the lighting device 20 is attached to the lower part of the shelf 10. FIG. 2 is a perspective view of the base portion 32 and the base portion 39 constituting the main body portion 30. FIG. 3 is a perspective view illustrating the outline of the configuration of the main body 30 and the light guide member 40. FIG. 4 is a cross-sectional view taken along the line AA showing the cross section of the main body 30. FIG. 5 is a cross-sectional view illustrating a state where the light guide member 40 is attached to the main body 30. FIG. 6 is a cross-sectional view schematically illustrating a configuration of the illumination device 20 according to another embodiment. FIG. 7 is a cross-sectional view schematically illustrating the configuration of the illumination device 20 according to another embodiment. FIG. 8 is a cross-sectional view schematically illustrating a configuration of the lighting device 20 to which the light guide member 140 according to another embodiment is attached. FIG. 9 is an explanatory diagram showing an example of another embodiment of the diffusing dots 49.

  Next, the lighting device 20 as an example of the embodiment of the present invention will be described in detail based on the above-described drawings. The embodiments and drawings described below exemplify a part of the embodiments of the present invention, and are not used for the purpose of limiting to these configurations, and do not depart from the gist of the present invention. It can be changed as appropriate. In addition, the same or similar reference numerals are given to corresponding components in each figure, and “front direction”, “down direction”, and “rear direction” are arrows in FIG. 1 as shown in FIG. The diffusion dot means a concept including not only a dot-like recess but also a groove-like recess. Further, for convenience of explanation, the diffusion dots 49 are omitted in FIGS. 1 and 3, and in FIGS.

  As shown in FIGS. 1 to 3, the lighting device 20 is installed and used at the lower part of a shelf 10 (corresponding to a storage unit according to the present invention) provided near the ceiling or the like, and is attached to the lower part of the shelf 10. The main body 30, the light guide member 40 attached to the main body 30, the light source 50 (see FIG. 4) that irradiates light to the light guide member 40, and the light guide member 40 being prevented from dropping from the main body 30. Side member 60. For this reason, when light is irradiated from the light source 50 to the light guide member 40, the light is diffused and emitted by the light guide member 40, and light can be irradiated in a wide range from the front surface direction of the shelf 10 to the obliquely rearward downward direction. .

  As shown in FIG. 2, the main body 30 has a base 32 fixed to the lower surface side of the shelf 10 and a base 39 having a protective wall 33 protruding upward from the front surface, which can be attached to and detached from each other by a connecting member 31. Is attached. The connecting member 31 is a screw-shaped member in which the tip end portion 31a (see FIG. 4) is formed thicker than the other portions, and is sufficiently long to reach the upper surface side of the base portion 39 from the lower surface side of the shelf 10. have. For this reason, it has the function of both the function which fixes the base 32 to the lower surface side of the shelf 10, and the function which fixes the base 39 to the base 32 so that attachment or detachment is possible.

  The pedestal 32 is a metal member having a substantially rectangular parallelepiped shape whose both ends are bent and whose lower surface is released. As shown in FIG. 2, the pedestal 32 and the base 39 are detachably attached by a connecting member 31. It is done.

The base 39 is a metal member that is curved while smoothly projecting downward from the front to the rear.
A protective wall 33 projecting upward is provided on the front side, a slide hole 38 into which the connecting member 31 can be inserted is provided in the center, and a recess 34 recessed in the front direction is provided on the rear side. As shown in FIG. 5, the upper end of the protective wall 33 is positioned at substantially the same position as the inclined surface 48 b of the light guide member 40 when the light guide member 40 is attached to the main body 30. The protective wall 33 is positioned on the one main surface side of the flat portion 42. For this reason, possibility that the 1st plane part 42 will be damaged at the time of attachment can be reduced beforehand. As shown in FIG. 2, the slide hole 38 is a through hole formed at one end side wider than the tip end portion of the connecting member 31 a and at the other end side narrower than the tip end portion 31 a of the connecting member 31. And is provided on the base 39 so that the other end side is the front side. For this reason, after inserting the connecting member 31 into one end side of the slide hole 38 and then sliding the base 39 rearward to move the connecting member 31 to the other end side of the slide hole 38, the connecting member 31 moves to the slide hole 38. Accordingly, the base 39 can be fixed to the base 32.

  As shown in FIG. 3, the concave portion 34 is a concave portion that is recessed from the rear side toward the front surface, and one side surface 34 b of the concave portion 34 is provided to be horizontal. The recess 34 is provided with a substrate 52 and a light source 50 on the bottom surface 34a, and a fixing screw 36 on the other side surface 34c. Furthermore, the surface of the main body 30 is a mirror surface. When light is irradiated from the light guide member 40 in the direction of the main body 30, the light is reflected from the surface of the main body 30 and enters the light guide member 40 again. Will do. For this reason, compared with the case where the surface of the main-body part 30 is not a mirror surface, it is brighter.

  As shown in FIGS. 3 and 5, the light guide member 40 is made of methacrylic resin, and the other main surface direction is the front surface direction, and the first flat surface portion 42 from the lower side to the rear side. A curved portion 44 that bends, a second flat surface portion 46 whose other main surface direction is a diagonally rearward downward direction of the shelf 10, and a curved surface extending from one end side of the second flat surface portion 46 toward the first flat surface portion 42. And a plurality of diffusion dots 49 are provided on one main surface. Thus, when light is introduced from the light source 50 to the incident end surface 48a that is one end side of the extending portion 48, the light moves along the shape of the light guide member 40 and is provided on the one main surface side. It is diffused by the plurality of diffusion dots 49 and can emit light to the other main surface side. For this reason, light can be irradiated to a wide range from the front side to the lower side. At this time, since the curved portion 44 is provided between the first planar portion 42 and the second planar portion 46, the first planar portion 42 to the second planar portion 46 have a smoothly curved shape. As a result, when the first flat surface portion 42 and the second flat surface portion 46 are acute-angled, light is strongly emitted by the acute angle. It is possible to prevent the possibility of bright light lines (glare) along the (bending position). In addition, since the first flat surface portion 42 and the second flat surface portion 46 are smoothly curved and connected by the bending portion 44, the light is continuously irradiated to the range from the front side to the lower side, and in the case of an acute angle Compared with, it can irradiate with light of soft aesthetics. In addition, it is preferable that the outer surface side of the curved part 44 is about R10 mm-R14 mm, and it is more preferable that it is R12 mm. Moreover, it is preferable that the outer surface side between the 2nd plane part 46 and the extension part 48 is about R14mm-R18mm, and it is more preferable that it is R16mm.

  Further, as shown in FIG. 5, the end surface opposite to the incident end surface 48 a of the main body 30 is inclined so as to face the direction of the shelf 10 (FIG. 5, the upper right direction) when attached to the shelf 10. It has a surface 48b. For this reason, when a part of the light emitted from the light source 50 passes through the light guide member 40, a part of the passed light is emitted from the inclined surface 48 b toward the shelf 10. By doing so, since the shelf 10 can be illuminated, not only the range from the front side to the lower side but also the interior of the shelf 10 can be illuminated, so the shelf 10 can be used even when the surroundings are dark. Convenience can be improved.

  Furthermore, in the state where the main body 30 is attached to the lower side of the shelf 10, the upper portion of the first flat surface portion 42 is located above the lower surface of the shelf 10, so that it is attached to the lower side of the shelf 10. Compared with the case where it is, light can be irradiated from a higher position. In other words, light can be irradiated farther away. In addition, since the inclined surface 48b is positioned above the lower surface of the shelf 10, light is emitted further to the back of the shelf 10 than when the inclined surface 48b is located at a position lower than the shelf 10. be able to. At this time, since the protective wall 33 protruding from the main body 30 is located on the one main surface side (back surface side) of the first flat surface portion 42, the possibility of the first flat surface portion 42 being damaged is prevented. can do.

  As shown in FIG. 5, the diffusion dots 49 are concave portions (see FIG. 9A) that are recessed in a quadrangular pyramid shape and are provided on one main surface side of the light guide member 40, and the length of each side of the diffusion dots 49 is The pitch between the adjacent quadrangular pyramid-shaped diffusion dots 49 is 2.0 mm, and the depth is about 0.6 mm and the depth is about 0.4 mm. As described above, the position of the diffusion dot 49 corresponding to the bottom surface of the quadrangular pyramid is provided on one main surface side (the back surface side of the light guide member 40 and the surface side facing the main body 30). By doing so, even if the other main surface side (front surface side) of the light guide member 40 is soiled with dust or the like, the other main surface side is not provided with the diffusion dots 49, so the dirt is easily removed. It can be removed and the labor required for maintenance and management can be reduced. In addition, each diagonal line connecting each vertex of the bottom surface of the quadrangular pyramid that forms the diffusion dot 49 may be provided so as to be substantially parallel to each side of the light guide member 40. If formed in this way, the incident light from the incident end face 38a intersects each side of the diffusing dot 49, so that the incident light can be easily diffused to the main surface.

  When the diffusion dots 49 are formed, an ultrasonic processing horn in which a plurality of processing dots having a shape obtained by inverting the diffusion dots 49 on the front end surface is arranged in a matrix form vertically and horizontally is perpendicular to the light guide member 40. The square-pyramidal diffusion dots 49 having a shape that reflects the shape of the processed dots can be formed by pressing to the right.

  As shown in FIG. 4, the light source 50 is a planar light emitting white light emitting diode, and a plurality of light sources 50 are linearly arranged on the substrate 52 arranged on the bottom surface 34a. By using a planar light emitting diode as the light source 50, a space required for arranging the light source 50 can be reduced and downsizing can be achieved as compared with the case where an incandescent light bulb or the like is used. The light guide member 40 can be irradiated with light having high straightness. Since the incident end face 48a of the light guide member 40 is located in the front direction of the light source 50 as shown in FIG. 5, the incident end face 48a can be sufficiently irradiated with light having high straightness. Further, the heat generated when the light source 50 emits light is transmitted to the bottom surface 34 a through the substrate 52 and is transmitted to the entire main body 30. At this time, since the main body 30 is a metal member, the heat generated by the light source 50 can be efficiently released from the light source 50. By doing so, it is possible to reduce the possibility that a defect of the light source 50 is caused by the heat generated from the light source 50.

  As shown in FIG. 3, the side member 60 is a metal member that covers at least a part of the side surface of the main body portion 30 and the side surface of the light guide member 40, and is attached to the screw fixing portion provided on the side surface of the main body portion 30. It is fixed with a screw (not shown). At this time, since the side surface of the main body 30 and the side member 60 are fixed in contact with each other, the heat generated by the use of the light source 50 is transmitted to the side member 60 through the substrate 52 and the main body 30. It is discharged from the side member 60 to the outside. By doing so, the possibility that the light source 50 malfunctions or breaks down due to the heat generated by the light source 50 can be reduced in advance. The side member 60 may cover a part of the side surface of the shelf 10 at the same time, or may be fixed to the side surface portion of the shelf 10 with a screw or the like. If it carries out like this, the illuminating device 20 and the shelf 10 can be fixed more firmly.

  Next, a method for attaching the lighting device 20 to the shelf 10 will be described in detail. When attaching the lighting device 20 to the shelf 10, first, the base portion 32 is attached to the lower portion of the shelf 10, then the light guide member 40 is attached to the base portion 39, and then the base portion 39 is attached to the base portion 32.

  First, the base part 32 is attached to the lower part of the shelf 10. Specifically, the base part 32 is fixed to the lower part of the shelf 10 using the connecting member 31 using a plurality of mounting holes 32 a (see FIG. 2) provided in the base part 32. At this time, a margin corresponding to the height of the pedestal 32 is left on the distal end 31 a side of the connecting member 31. By inserting the distal end portion 31 a side of the connecting member 31 into the slide hole 38 and fixing the base portion 32 and the base portion 39, the base portion 32 and the shelf 10, and the base portion 32 and the base portion 39 are connected using the connecting member 31. Both can be fixed. In this way, by fixing only the base portion 32 to the shelf 10 in advance, it is easier to fix the illumination device 20 to the shelf 10 in a state where the light guide member 40 and the like are fixed. In particular, when mounting from the lower side, such as the lower part of the shelf 10, the effect of reducing work labor by reducing the weight by using only the base 32 is great.

  Next, the light guide member 40 is fixed to the base 39. Specifically, as shown by an arrow in FIG. 3, the extension portion 48 provided in the light guide member 40 is inserted into the concave portion 34 provided in the main body portion 30 from the side surface side and slid. Position it at a desired position. Subsequently, after positioning the light guide member 40 at a desired position, as shown in FIG. 5, the light guide member 40 is fixed to the concave portion 34 with a fixing screw 36. Since this fixing screw 36 penetrates the through-hole provided in the extension part 48 and fixes the light guide member 40, it is possible to reduce the possibility that the light guide member 40 will drop out of the recess 34. At this time, the through hole provided in the extending portion 48 is formed wider than the diameter of the fixed screw 36. By doing so, even if the light guide member 40 is shrunk due to the influence of the outside air temperature, the possibility that it cannot be attached with the fixing screw 36 can be reduced in advance.

  Subsequently, the base portion 39 is fixed to the base portion 32. Specifically, as shown in FIG. 2, the connecting member 31 attached to the base portion 32 is inserted into the slide hole 38 provided in the base portion 39, and the rear side (from the left side in FIG. 4 to FIG. 4). The base part 39 is slid to the right side, and the base part 32 is fixed to the base part 39. By doing so, the gap generated between the outer surface of the protective wall 33 and the outer surface of the shelf 10 can be reduced, and the possibility that stored items or the like fall from the shelf 10 to the main body 30 can be reduced. it can. Thus, by fixing the base part 32 which is a part of the main-body part 30 to the lower surface side of the shelf 10 previously, the illuminating device 20 can be easily fixed to a desired position.

  According to the lighting device 20 of the present embodiment described in detail above, the light incident from the incident end surface 48a is mainly diffused by the plurality of diffusion dots 49 provided on the light guide member 40, so that the light is transmitted first. Light is emitted from the one flat surface portion 42, the curved portion 44, and the second flat surface portion 46, and light can be emitted in a wide range from the front surface side to the lower side and the lower oblique rear side. In this way, when it is placed in a place having a wall surface at the rear, both the role as direct illumination to the front side and the role as indirect illumination by light reflected on the rear wall surface etc. Can be played with a lighting device. At this time, since the first flat surface portion 42 and the second flat surface portion 46 are smoothly connected by the curved portion 44, light having a soft impression can be continuously irradiated, and an excellent aesthetic appearance is given. Can do. In addition, the possibility of occurrence of glare between the first flat surface portion 42 and the second flat surface portion 46 can be reduced in advance.

  In addition, the light guide member 40 has an extending portion 48 that curves and extends from the rear toward the first flat surface portion 42, and the extending portion 48 is formed on one side surface 34 b of the recessed portion 34 provided in the main body portion 30. The light guide member 40 can be easily attached because it is attached to the main body 30 by being disposed on the top. At this time, since the extending portion 48 is fixed by the fixing screw 36, the possibility that the light guide member 40 is dropped from the main body portion 30 is reduced.

  Furthermore, since the upper end surface of the first plane portion 42 is located above the lower surface of the shelf 10, it is possible to illuminate a higher position as compared with the case where it is located only on the lower side of the shelf 10. In other words, light can be irradiated over a wider range.

  Furthermore, the end face 48b opposite to the incident end face 48a is such that a part of the end face 48b is directed toward the shelf 10, and a part of the light incident from the incident end face 48a is directed toward the shelf 10. Can be irradiated. In other words, since light can be irradiated not only in the upward direction but also in the inner direction of the shelf 10, it is possible to irradiate light in a wider range and improve the convenience of the shelf 10.

  And since the light source 50 is a plane light emission type light emitting diode, compared with an incandescent lamp, it reduces power consumption and contributes to power saving. Moreover, since it becomes possible to reduce in size, even if it is a case where the illuminating device 20 is reduced in size and the space below the shelf 10 is narrow, the illuminating device 20 can be attached.

  It should be noted that the present invention is not limited to the above-described embodiment, and it goes without saying that the present invention can be implemented in various modes as long as it belongs to the technical scope of the present invention.

  For example, in the embodiment described above, the light source 50 is provided on the bottom surface of the recess 34, but may be provided at a position facing the opposite end surface of the light guide member 40 as shown in FIG. By doing so, the light source 50 can be brought closer to the first flat surface portion 42, so that the front direction can be illuminated more brightly. At this time, the light source 50 may be fixed by a U-shaped member as shown in FIG. In this way, light is not emitted to both main surface sides of the light guide member 40. By doing so, the possibility that light from the light source 50 is directly emitted and strong light is emitted without being diffused by the light guide member 40 can be reduced in advance. The light source 50 may be provided at both the position facing the end surface of the light guide member 40 and the bottom surface of the recess 34. In this way, not only the front side but also the lower oblique rear side can be brightened simultaneously. Moreover, the recessed part 34 will not be limited to this shape, if the light guide member 40 can be fixed, For example, the member of the shape where one part was dented like C-type steel may be provided separately. Here, FIG. 6 is a cross-sectional view showing an example of another embodiment of the lighting device 20.

  In the above-described embodiment, the inclined surface 48b faces the direction of the shelf 10. However, as shown in FIG. 7, even if the end surface opposite to the incident end surface 48a is curved toward the other main surface side. good. If it carries out like this, compared with the case where the inside of the shelf 10 is illuminated by the inclined surface 48b, the inside of the shelf 10 can be illuminated more brightly, and the convenience of the shelf 10 can be improved more.

  In the above-described embodiment, the light guide member 40 is used. However, as shown in FIG. 8, a light guide member 140 may be used instead of the light guide member 40. Also in this case, the same effect as the above-described embodiment can be obtained. In the light guide member 140, the bending angle of the bending portion 44 is larger than that of the light guide member 40, and the other main surface side of the second flat surface portion 46 faces downward. By doing so, it is possible to increase the light irradiated downward as compared with the light guide member 40. In other words, by changing the bending angle of the bending portion 44, the position where a large amount of light is irradiated can be changed, and a desired aesthetic appearance can be given.

  In the embodiment described above, the light source 50 is a planar light emitting white light emitting diode. However, the light source 50 is not limited to the planar light emitting type, and may be any type such as a side light emitting type or a shell type. The light color of the light source 50 is not limited to white, and may be any color of red, orange, yellow, green, blue, indigo or purple, or a combination of these colors. Good. Furthermore, a white light emitting diode may be used as the light source 50, and a colored transparent film or sheet such as a transparent color film may be disposed between the light source 50 and the light guide member 40 to generate colored light. In any case, the same effect as the above-described embodiment can be obtained.

  In the above-described embodiment, the light guide member 40 is made of methacrylic resin, but is not particularly limited as long as it is a transparent resin through which light can pass through, for example, methyl methacrylate or ethyl In addition to methacrylic resins such as methacrylate, acrylic resins such as methyl acrylate and ethyl acrylate, resins such as polycarbonate and polyethylene can be used. Further, a fine particle diffusing agent capable of diffusing visible light may be added. In either case, the same effects as those of the above-described embodiment can be obtained.

  In the above-described embodiment, the recess 34 opens in the horizontal direction, but the opening direction is not limited to the horizontal direction, and the opening may face upward from the horizontal direction. In this way, when the extension part 48 is inserted into the recess 34, the extension part 48 moves in the direction of the bottom surface 34 a due to its own weight, so that the extension part 48 falls off after insertion and the light guide member 40 is removed from the main body part 30. The possibility of leaving can be reduced in advance.

  In the above-described embodiment, the surface of the main body 30 is a mirror surface, but a white baking process may be performed or a reflective sheet may be attached. By doing so, it is possible to obtain the same effect as the above-described embodiment.

  In the embodiment described above, the diffusion dot 49 is a quadrangular pyramid-shaped recess, the length of each side of the diffusion dot 49 is about 0.6 mm, the depth is about 0.4 mm, and the adjacent quadrangular pyramid shape. However, the present invention is not limited to this, and a suitable size can be selected as appropriate. The length of each side of the quadrangular pyramid-shaped diffusion dot 49 may be selected from 0.2 mm to 1.5 mm, for example. Further, the depth of the quadrangular pyramid-shaped diffusion dots 49 may be selected from 0.4 mm to 0.8 mm, for example. Furthermore, the pitch between adjacent quadrangular pyramid-shaped diffusion dots 49 may be appropriately selected from a pitch of 1.5 mm to 8.0 mm, or may be 1.5 mm to 3.0 mm. . In any case, the same effect as that of the above-described embodiment can be obtained.

  In the embodiment described above, the diffusing dots 49 are provided on the entire one main surface side of the light guide member 40. However, the diffusing dots 49 are provided on both main surfaces of the one main surface side and the other main surface side. It may be. Even in such a case, the same effect as the above-described embodiment can be obtained. Further, the diffusing dots 49 may be provided not only on the one main surface side of the light guide member 40 but only on any arbitrary part. For example, the first flat surface portion 42, the curved portion 44, and the second flat surface portion 46 may be provided on one main surface side. In this way, it is possible to reduce the labor for forming the diffusion dots 49 compared to the case where the diffusion dots 49 are provided on the entire main surface. Further, a specific character, pattern, or the like may be represented by the arrangement position of the diffusing dots 49. If it carries out like this, a specific meaning and message property can be given with the light irradiated from an illuminating device. Further, the length and depth of each side of the diffusion dots and the pitch between the diffusion dots 49 may be changed depending on the location where the diffusion dots 49 are provided. For example, if the pitch between the diffusing dots 49 arranged on the first plane part 42 is made shorter than other places, the first plane part 42 becomes brighter and the front direction can be made brighter. In this way, by changing the shape or the like of the diffusing dots 49, the position where the front side becomes brighter or the lower side becomes brighter is changed, the function as indirect illumination or the function as direct illumination is changed. A desired beauty can be produced.

  In the above-described embodiment, the diffusion dots 49 are quadrangular pyramid-shaped recesses, but the shape and size of the diffusion recesses formed as the diffusion dots 24 are not particularly limited. A diffusion dot 24 composed of diffusion recesses of various shapes and sizes can be used as appropriate. For example, FIG. 9B shows a diffusing dot 49 consisting of a conical diffusing recess. FIG. 9C shows a diffusing dot 49 composed of a quadrangular prism-shaped diffusing recess. FIG. 9D shows a diffusion dot 49 composed of a quadrangular pyramid-shaped diffusion recess. FIG. 9E shows a diffusing dot 49 consisting of a hemispherical diffusing recess. As a manufacturing method, various processing methods such as ultrasonic processing, heating processing, laser processing, and cutting processing can be employed. Further, for example, as shown in FIG. 9F, a convex bulging diffusion convex portion may be used. The diffusion convex portion is formed on the main surface so as to rise (clean) by clean printing, silk printing, or the like. The size of each diffusion dot 49 may be the same or different. For example, each side of the quadrangular pyramid-shaped diffusion dot 49 may be gradually lengthened, or the depth of the quadrangular pyramid-shaped diffusion dot 49 may be gradually increased as the distance from the incident end surface 48a increases. In this way, the amount of light diffused becomes small at a position where the light is close and strong from the light source 50, and the amount of light diffused increases as the distance from the light source 50 increases. Therefore, the amount of light emitted from the main surface can be made uniform. it can.

  As shown in the above-described embodiment, it can be used as an illumination device that illuminates the lower side from the front side of a shelf provided in the illumination field, particularly in the vicinity of the ceiling or the like.

DESCRIPTION OF SYMBOLS 10 ... Shelf, 20 ... Illuminating device, 24 ... Diffusion dot, 30 ... Main-body part, 31 ... Connecting member,
31a ... tip portion, 32 ... base portion, 32a ... mounting hole, 33 ... protective wall, 34 ... concave portion,
34a ... bottom surface, 34b ... one side, 34c ... other side, 36 ... fixing screw,
38 ... slide hole, 38a ... incident end surface, 39 ... base, 40 ... light guide member,
42 ... 1st plane part, 44 ... Curved part, 46 ... 2nd plane part, 48 ... Extension part,
48a ... incidence end face, 48b ... inclined surface, 49 ... diffusion dot, 50 ... light source, 52 ... substrate,
60 ... side member, 140 ... light guide member.

Claims (8)

A lighting device provided below a storage unit capable of taking in and out stored items from the front side,
A body portion attachable to the lower surface of the storage portion;
A plurality of light sources attached to the main body,
A light guide member that is attached to the main body and diffuses light emitted from the light source incident from the incident end surface with a plurality of diffusion dots or diffusion convex portions provided on one main surface, and emits the light.
With
The light guide member diffuses the light in the front direction and emits the first flat part, a curved part that curves backward from the lower direction of the first flat part, and the light downward or obliquely downward A second flat surface portion that diffuses and emits in the direction,
Lighting device. The second plane part has an extending part that curves and extends in the direction of the first plane part,
The main body has a support surface for supporting the extension from below,
The light guide member is attached to the main body part by supporting a main surface of the extension part by the support surface,
The lighting device according to claim 1. The end surface of the first flat portion is located above the lower surface of the storage portion,
The lighting device according to claim 1 or 2. At least a part of the end surface opposite to the incident end surface of the light guide member faces the direction of the storage portion,
The illuminating device of any one of Claims 1-3. The first plane portion is characterized in that one end side is curved toward the one main surface side,
The illuminating device of any one of Claims 1-3. The plurality of light sources are arranged at positions facing both end faces of the light guide member,
The illuminating device of any one of Claims 1-5. It is an illuminating device of any one of Claims 1-6,
A metal side member that covers side surfaces of the main body and the light guide member;
With
The main body and the side member are in contact with each other,
Lighting device. The light source is a planar light emitting diode,
The illuminating device of any one of Claims 1-7.

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