JP2012119133A - Lighting device and lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting system capable of efficient illumination in equipment having shelf members.SOLUTION: A lighting device 10, arranged with an interval opened in a first direction and fitted on a pair of shelf members 21, 22 extended in a direction crossing the first direction, illuminates a face under the shelf members 21, 22. The lighting device 10 includes a flat-plate part 11 equipped with a fixing part extended at a top part of the pair of shelf members 21, 22 to be fixed at the top part of the shelf members 21, 22, an LED 12b and a light guide plate 12a fitted at an underside of the flat-plate part 11, and a retaining member fitted at an underside of the light guide plate 12a.

Description

  The present invention relates to an illumination device and an illumination system using LEDs, and more particularly, to an illumination device and an illumination system capable of efficient illumination.

  In a facility having a plurality of shelves, a configuration that takes into account lighting of the shelves is disclosed in, for example, Japanese Patent Laid-Open No. 2010-198792 (Patent Document 1). According to this publication, the shelf body of the shelf functions as a light guide plate that transmits light. The lighting system includes a frame that is detachably attached to a rear end portion of the shelf body, and an LED that is attached to the frame and faces the rear end surface of the shelf body. When the LED array emits light, this light is guided into the inside of the shelf body and diffused upward from the light diffusion portion on the surface of the shelf body. Thereby, the article on the shelf body is illuminated.

JP 2010-198792 A

  A conventional lighting system in a device having a plurality of shelves has been configured as described above. Such a configuration seems to be sufficient for shelf illumination, but requires a plurality of LED arrays and light guide plates, which is costly and not very efficient.

  This invention was made in order to eliminate the above problems, and it aims at providing the illuminating device and illumination system which can illuminate efficiently in the installation which has a shelf member.

  The illuminating device according to the present invention is disposed on a pair of shelf members that are arranged at intervals in the first direction and extend in a direction intersecting the first direction, and illuminates a lower surface from the shelf members. The illuminating device is provided on the lower surface of the flat plate portion, the flat plate portion that extends to the upper portion of the pair of shelf members and has a fixing portion for fixing to the upper portion of the shelf member, and the lower surface of the light guide plate. And a holding member provided on the housing.

  Preferably, the light guide plate includes a light diffusion portion provided at a predetermined position on the lower surface.

  More preferably, the LED is integrated with a heat sink.

  Moreover, it is preferable that at least the center portion of the flat plate portion has a light transmitting portion.

  An illumination system according to another aspect of the present invention includes a frame member having a plurality of support portions that are arranged in a matrix shape, each having a rectangular opening, and an illumination unit that is detachably supported by the support portion. Including. The lighting unit includes an LED and a light guide plate.

  Preferably, the LED is integrated with a heat sink.

  In still another aspect of the present invention, a lighting system is arranged in a matrix, a frame member having a plurality of support portions each having a rectangular opening, an LED attached to the frame member, and an LED A light guide plate having opposing end faces, and the light guide plate is detachably attached to the frame member.

  In this invention, the illuminating device extends to the upper part of the pair of shelf members and has a flat plate part having a fixing part for fixing to the upper part of the shelf member, an LED and a light guide plate provided on the lower surface of the flat plate part, Since the holding member provided on the lower surface of the light guide plate is included, the shelf member can be efficiently illuminated from above.

It is a perspective view which shows the whole structure of the illuminating device of a shelf member. It is an enlarged view of the part shown by II in FIG. It is a perspective view which shows an illuminating device. It is a figure which shows the detail of an illuminating device. It is a perspective view which shows the illuminating device at the time of providing an illuminating unit continuously. It is a figure which shows the frame structure holding the illumination unit used as the basis of an illumination system. It is a figure which shows the part shown by VII-VII in FIG. It is a perspective view which shows an illumination unit. It is a figure which shows the detail of a lighting unit. It is a figure which shows the other example of a lighting system. It is a figure which shows the further another example of a lighting system.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing the overall configuration when the present invention is used as a lighting device for a shelf that houses a main computer such as a server. Referring to FIG. 1, a pair of shelf members 21 and 22 that accommodate a server are disposed facing each other with a width W (interval in the first direction) of a passage 30 through which a person can pass. The shelf members 21 and 22 have a predetermined length in the passage direction (second direction) orthogonal to the width direction. An illuminating device 10 is provided at the upper ends of the pair of shelf members 21 and 22 so as to cover them. The illuminating device 10 is being fixed to the upper end part of each shelf member.

  The shelf members 21 and 22 have a pair of doors 21a and 21b that open and close as indicated by arrows in FIG. When the doors 21a and 21b are opened, a plurality of shelf boards are provided, and a server or the like is placed on the shelf boards. In addition, illustration of a server etc. is abbreviate | omitted here. Further, the doors 21a and 21b are provided only on the side of the shelf members 21 and 22 facing the passage 30, and other surfaces including the back surface, both side surfaces, the ceiling, and the floor surface are all closed. To do.

  FIG. 2 is an enlarged view showing the details of the portion indicated by II in FIG. 1 where the lighting device 10 is fixed to the upper end of the shelf member 22 on the passage side. Referring to FIG. 2, lighting device 10 is attached along upper end 22 a on the passage side of shelf member 22 and portion 22 b extending downward from the upper end on the passage side. The doors 21a and 21b are provided in the lower part of the lighting device 10.

  The lighting device 10 includes a folding member (holding member) 17 along the upper end 22a on the passage side of the shelf member 22, a portion 22b extending downward from the upper end on the passage side, and the upper end 22a folding member 17 of the shelf member. And a flat plate portion 11 formed of an aluminum plate. It is preferable that only the outer peripheral part located in the upper part of the shelf members 21 and 22 is aluminum, and the flat plate part 11 is transparent, or at least a center part has translucency.

  The bending member 17 has an inverted Z-shape in which a planar portion 17a extending along the upper end portion 22a, a vertical portion 17b orthogonal to the planar portion 17a, and a planar portion 17c orthogonal to the vertical portion 17b are continuous. ing.

  The illumination device 10 further includes a light guide plate 12a, an LED 12b, and the like provided between the flat plate portion 11 and the flat surface portion 17c. The flat plate portion 11 and the flat portion 17c are divided into two layers. On the flat plate portion 11 side, there are LEDs 12b at both ends, and a light guide plate 12a made of an acrylic plate is provided so as to be sandwiched between the LEDs 12b. ing. The LED 12b is attached to a first heat sink 15 formed of an aluminum plate. An acrylic plate 13 having the same dimensions as the light guide plate 12a is provided on the lower surface of the acrylic plate constituting the light guide plate 12a. A space is provided between the light guide plate 12a and the LED 12b. The same space is opened, and a second heat sink 16 that is also formed of aluminum is provided under the heat sink 15. The planar portion 17c of the bending member 17 extends to a position where the end portion can hold the end portions of the light guide plate 12a and the acrylic plate 13. Although not shown, the flat plate portion 11 and the flat portion 17a of the bending member 17 are integrated by adhesion or the like, and this is fixed to the upper surface of the shelf member 22a with screws or the like. Moreover, the connection state between the shelf member 21 and the lighting device is the same also on the shelf member 21 side.

  If it is such a structure, the illuminating device 10 can be easily removed from the shelf members 21 and 22 by removing the screw | thread which connects the flat plate part 11 and the plane part 17a, and the maintenance of an illuminating device becomes easy.

  The acrylic plate 13 and the second heat sink provided on the lower surface of the light guide plate 12a may be omitted.

  FIG. 3 is a view showing a portion of the light guide plate 12a facing the LED 12b. 3A is a plan view, and FIG. 3B is a cross-sectional view of a portion indicated by an arrow BB in FIG. 3A. Referring to FIG. 3, the light guide plate 12 a includes a transparent portion 12 d and a silk-printed portion (light diffusion portion) 12 c that diffuses light from the LEDs 12 b to the outside. The silk-printed portion 12 c It is only a portion of a constant width on the LED 12b side of 12a. The width dimension varies depending on the required illuminance of the lighting device.

  As usual, a lighting fixture 19 provided on the ceiling of the room is attached to the upper part of the lighting device 10 provided on the shelf members 21 and 22, and the central portion of the lighting device 10 is transparent. Since only the light plate 12a and the acrylic plate 13 are provided, there is usually no problem with only the lighting fixture 19 without operating the lighting device 10. Only when checking the inside of the shelf members 21 and 22, the LED of the lighting device 10 is operated.

  Next, the specific structure of the principal part of the illuminating device 10 is demonstrated. FIG. 4 is a perspective view showing a specific configuration of a main part of the illuminating device 10, and the illuminating device 10 shown in FIG. Here, a case where a Cree type LED 12b is incorporated is shown, but an MCM type may be used.

  Referring to FIG. 4, lighting device 10 includes a flat plate portion 11 and a bent plate 17 provided on flat plate portion 11. Rectangular heat sinks 15 and 16 are provided between the flat plate portion 11 and the bent flat portion 17c of the bent plate 17, and the LED 12b is fixed to the flat portion 17c side of the heat sink 15 on one side. The heat sinks 15, 16 extend in the longitudinal direction (second direction) of the shelf members 21, 22, and a plurality of LEDs 12 b are attached in a line at predetermined intervals along this direction. The LED 12b is attached to the heat sink 15 with a double-sided tape or an adhesive. Further, a wiring (not shown) is provided on the surface of the heat sink 15 opposite to the LED 12b.

  Between the heat sinks 15a and 15b to which the plurality of LEDs 12b are attached, a rectangular parallelepiped light guide plate 12a having an incident surface facing the LEDs 12b is provided. The light guide plate 12a is fixed to the aluminum flat plate portion 11 with an adhesive or the like.

  Next, a method of attaching the heat sinks 15a and 15b and the vertical portion 17b of the aluminum bent plate 17 will be described. Referring to FIG. 4, screw holes 18 a and 18 b are provided on the outer side (shelf member side) of bending plate 17. Further, screw holes (not shown) are also provided at positions corresponding to the screw holes 18a and 18b of the heat sinks 15a and 15b. By inserting screws (not shown) into the screw holes 18a and 18, the heat sinks 15 and 16 can be detachably attached to the bent plate 17 made of aluminum. On the other hand, since the LEDs 12b are attached to the heat sinks 15a and 15b, the plurality of LEDs 12b can be replaced at a time by removing the heat sinks 15a and 15b from the light guide bending plate 17 made of aluminum.

  Here, the heat sinks 15 and 16 will be described. Since the heat sinks 15 and 16 are made of aluminum having a rectangular cross section and have high thermal conductivity, the heat dissipation is good. Further, since the heat sinks 15 and 16 are sandwiched between the bent plate 17 and the flat plate portion 11 and the light guide plate 12a and the like are integrated with the flat plate portion 11, the heat sink 15 and 16 are thin and light, and heat can be radiated from the entire illumination system 10.

  Further, since the lighting device 10 can be detachably attached to the shelf members 21 and 22 using screws or the like, maintenance of the lighting device is facilitated.

  In addition, in the said embodiment, although the case where the single illuminating device 10 was mounted on a pair of shelf member was demonstrated, when not only this but the dimension between shelf members is large, an illuminating device is used. A plurality of illumination units may be configured, and the plurality of illumination units may be connected by a connection member. The configuration in that case is shown in FIG.

  Referring to FIG. 5, lighting device 40 includes a first lighting unit 40a, a second lighting unit 40b, and a connection member 27 that connects first lighting unit 40a and second lighting unit 40b. The basic configuration of each of the lighting units 40 a and 40 b is the same as that of the lighting device 10. That is, each of the lighting units 40a and 40b is provided at the upper end of the one shelf member 21 on the passage side, and is provided on the opposite side to the first bending member 25a having the same shape as the bending member 17. A second bending member 25b bent line-symmetrically on the passage side with respect to the first bending member 25a, and a third bending member 26 formed on the first and second bending members 25a and 25b and formed of an aluminum plate. The LED, the light guide plate 12a, etc. are sandwiched between the two.

  The first and second bending members 25a and 25b each have a portion 25c extending further downward at the end in the passage direction. In addition, the third bending member 26 has a flat end portion 26a provided at the center and both ends of the flat end portion 26a. ) Along the horizontal portion (corresponding to the flat portion 17a in the previous embodiment) in the horizontal direction from the upper end portion of the vertical portion 26b and the horizontal portion of the first and second bending members 25a, 25b. A portion 26c is provided. In this case as well, the flat end portion 26a is translucent.

  The connecting member 27 that connects the first lighting unit 40a and the second lighting unit 40b includes a downwardly extending portion 25c provided at the end of the bending member 25b of the first lighting unit 40a, and the second lighting unit. It has a U-shaped groove that sandwiches a downwardly extending portion 25c provided at the end of the bending member 25a of 40b from the outside. When the weights of the first lighting unit 40a and the second lighting unit 40b are light, the connection member 27 can sufficiently hold both of them together by simply sandwiching the portion 25c extending downward.

  On the other hand, when the weight increases, a support member (not shown) is provided below the connection member 27 in the extending direction of the bending member 25a (the direction intersecting the paper surface), and the connection member 27 is supported by this support member. Good. At this time, the support member 27 is supported by a support tool (not shown) provided in the passage 30. In this case, as shown in FIG. 5, a space is provided between the downwardly extending portions 25c of the respective bending members, and a connection portion with a support member (not shown) such as a screw is provided here.

  In addition, here, the portions of the respective folding members located on the upper portions of the shelf members 21 and 22 are supported by the plate 28 provided on the upper portions of the shelf members 21 and 22, but this is not restrictive. It is also possible to provide a continuous bending member by the connecting member 27 and to support the connecting member on the shelf member.

  In the above embodiment, only a pair of shelf members and a lighting device provided thereon are shown, but this pair is continuous in a plurality of lateral directions (first direction) and longitudinal directions (second direction). May be provided. In this case, the illumination unit 40a and the like shown in FIG. 5 may be provided continuously.

  In this case, the room in which the lighting device is provided may be divided up and down by the lighting device. If it carries out like this, the cost required for an air conditioning can be reduced by operating an air conditioner only in the lower part of an illuminating device, for example.

  Next, still another embodiment of the present invention will be described. FIG. 6 is a view showing a frame member that holds the illumination unit when the illumination unit according to the present invention is used in an illumination system. Referring to FIG. 6, frame member 51 includes a plurality of support portions 53 that are arranged in a matrix shape and each have a rectangular opening 52. Each support portion 53 is arranged in the vertical direction, and has a plurality of vertical members 54 having a predetermined width and height, and is arranged in the horizontal direction so as to be orthogonal to the vertical members 54, and has a predetermined width and height. And a plurality of transverse members 55 having Each support portion 53 preferably has the same shape.

  FIG. 7 is a diagram showing a state in which the illumination unit 60 according to this embodiment supported by the support portion 53 is placed on the cross-sectional view of the portion indicated by arrows VII-VII in FIG. Referring to FIG. 7, each of the longitudinal member 54 and the lateral member 55 includes projecting portions 54 a and 55 a extending in the lateral direction at the lower ends thereof, and the lighting unit 60 is supported by these projecting portions 54 a and 55 a. Has been. The lighting units do not have to be provided in all the support portions 53, but may be provided only in necessary portions, and a short decorated plate or the like may be provided in other portions.

  Next, the details of the illumination unit 60 according to this embodiment will be described. FIG. 8 is a perspective view of the illumination unit 60 in this embodiment, and FIG. 9 is a cross-sectional view of a portion indicated by IX-IX in FIG. With reference to FIG. 8 and FIG. 9, the illumination unit 60 has a rectangular parallelepiped shape that is thin in the vertical direction as a whole. The lighting unit 60 covers the outer periphery of the lighting unit 60 and has an outer portion 61 made of an aluminum plate having a U-shaped cross section and upper and lower sides constituting the “U” shape of the outer portion 61. Made of aluminum having a rectangular cross section for holding the LED 63 and for releasing the heat from the LED 63, the light guide plate 62 held by the light guide plate 62, the LED 63 provided at a position facing the longitudinal end face of the light guide plate 62. The heat sink 64 including the heat sink 64 is provided so as to contact the exterior portion 61. Further, the LED 63 and the heat sink 64 are integrated.

  In addition, a dot-like silk printing pattern for diffusing light is provided on the lower surface of the light guide plate 62 facing the LED 63. The LEDs 63 may be provided on each of the four sides constituting the illumination unit 60, or may be provided so as to be paired on either side in the vertical direction or the horizontal direction. It may be provided only on the side.

  As described above, in this embodiment, since the illumination unit 60 is configured to be detachable from the frame member 51, it is possible to provide an illumination system that can provide the illumination unit only at a necessary location.

  Next, still another embodiment of the present invention will be described. FIG. 10 is a diagram showing still another embodiment of the present invention, and corresponds to FIG. 9 in the previous embodiment. In this embodiment, a heat sink and an LED are incorporated into a frame member that holds an illumination unit, and a light guide plate body that is made of an acrylic plate is configured to be detachable from the frame member.

  Referring to FIG. 10, in this embodiment, the basic structure of frame member 71 is the same as that of the previous embodiment. That is, the frame member 71 is configured by intersecting a longitudinal member 74 and a plurality of transverse members 75 having a predetermined width and height arranged in the lateral direction so as to be orthogonal to the longitudinal member 74. Each member 74, 75 has a projecting portion extending in the lateral direction at the lower end portion (here, only the projecting portion 74a extending to the lower end portion of the member 74 is shown).

  The member 74 includes a heat sink 73 having a rectangular cross section using a part of a member 74 b extending in the vertical direction and a portion 74 a extending in the lower end, and an opening of the heat sink 73. LED72 provided in the part 52 side is provided. A light guide plate 76 made of an acrylic plate is provided at a portion facing the LED 72.

  The projecting portion 74 a extends to the projecting portion side opposite to the portion constituting the heat sink 73, and the end portion of the light guide plate 76 is supported by this portion, and the light guide plate 76 is provided detachably with respect to the frame member 71. .

  Here, the horizontal member 75 is not provided with a heat sink or LED, but the horizontal member 75 may be provided with a heat sink or LED as necessary.

  Moreover, although the case where the heat sink has a rectangular cross section has been described, it is not limited to this shape. The entire longitudinal member 74 may be a heat sink.

  Next, a modification of this embodiment will be described. FIG. 11 is a diagram showing this modification. In this embodiment, the longitudinal member 74c is L-shaped, and the heat sink 73a having a rectangular cross section is different from the previous embodiment in that it is provided separately from the longitudinal member 74c. Other parts are denoted by the same reference numerals as those in the previous embodiment, and description thereof is omitted. In this embodiment, the heat sink 73a is fixed to the longitudinal member 74c with screws 77 or the like. That is, in this embodiment, not only the light guide plate 76 but also the heat sink 73a itself can be detached from the longitudinal member 74c.

  In addition, in the said embodiment, although the case where the light-guide plate main body was comprised with the acrylic board was demonstrated, not only this but what has a light transmittance and self-digestibility should just be. That is, it may be glass or polycarbonate.

  Also in this embodiment, another lighting fixture may be provided above the lighting system.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  Since the lighting device according to the present invention can efficiently illuminate the shelf member from above, it is advantageously used as a lighting device.

DESCRIPTION OF SYMBOLS 10 Illuminating device, 11 Flat plate part, 12a Light guide plate, 12b LED, 13 Acrylic board, 15 1st heat sink, 16 2nd heat sink, 17 Bending member, 21,22 Shelf member, 30 Passage.

Claims (7)

An illumination device that is arranged on a pair of shelf members that are arranged at intervals in a first direction and extends in a direction intersecting with the first direction, and illuminates a lower surface from the shelf members,
A flat plate portion extending on top of the pair of shelf members and having a fixing portion for fixing to the upper portion of the shelf member;
Provided on the lower surface of the flat plate portion, LED and light guide plate,
And a holding member provided on a lower surface of the light guide plate. The lighting device according to claim 1, wherein the light guide plate includes a light diffusion portion provided at a predetermined position on the lower surface. The lighting device according to claim 1, wherein the LED is integrated with a heat sink. The lighting device according to claim 1, wherein at least a central portion of the flat plate portion has a light transmitting portion. A frame member having a plurality of support portions arranged in a matrix and each having a rectangular opening;
An illumination unit that is detachably supported by the support part,
The illumination system includes an LED and a light guide plate. The lighting system of claim 5, wherein the LED is integrated with a heat sink. A frame member having a plurality of support portions arranged in a matrix and each having a rectangular opening;
An LED attached to the frame member;
A light guide plate having an end face facing the LED,
The illumination system, wherein the light guide plate is detachably attached to the frame member.

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