JP2009176686A - Lighting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus capable of irradiating the ceiling face by indirect illumination. <P>SOLUTION: This is a lighting apparatus installed on a system ceiling A formed by arranging a ceiling panel 3 between a plurality of ceiling bars 2 hung down from a ceiling foundation, and includes an apparatus body 1, a socket which is installed on the apparatus body 1 and on which a discharge lamp La is installed detachably, and a ballast which is installed in the apparatus body 1 and supplies lighting power to the discharge lamp La through the socket. The apparatus body 1 includes an installation panel 10 which is installed between the adjoining ceiling bars 2 and closes the space surrounded by the ceiling bars 2, a projection part 11 which is provided at the lower part of the ceiling bars 2, and a reflecting member 12 which is installed at the projection part 11 and arranged opposed to the installation panel 10, and reflects light from the discharge lamp La to the installation panel 10 side, and the socket is provided on the face opposed to the system ceiling A of the reflecting member 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting fixture for a system ceiling.

  2. Description of the Related Art Conventionally, lighting fixtures for indirect lighting that are attached to a ceiling surface have been provided, for example, as disclosed in Patent Document 1. In this type of lighting fixture, a plurality of ceiling bars, which are held via a hanger at the lower end of a suspension bolt suspended from a ceiling foundation such as a ceiling slab, are provided substantially in parallel in a plane along the ceiling foundation. And installed on a system ceiling or the like in which a ceiling panel or the like is provided between a pair of adjacent ceiling bars. Hereinafter, the conventional example of the lighting fixture used for a system ceiling is demonstrated using drawing. However, in the following description, the top, bottom, left, and right in FIG.

  As shown in FIG. 7A, this conventional example is a lighting fixture installed on a system ceiling A formed by providing a ceiling panel 104 between a plurality of ceiling bars 100 suspended from a ceiling base. Thus, the appliance main body 101 formed of a box having an open bottom surface, two pairs of sockets (not shown) to which a straight tube type discharge lamp La as a light source is detachably attached, and each discharge lamp via each socket And a ballast (not shown) for supplying lighting power to La. Each ceiling bar 100 is a so-called T-bar having a substantially T-shaped section and a rectangular section at the tip of the vertical piece, and is arranged with the head facing upward. The instrument main body 101 is installed in a form embedded in the system ceiling A by placing locking protrusions provided at lower edges of the left and right ends of the instrument main body 101 on the head of each ceiling bar 100.

  Each of the discharge lamps La is disposed on both the left and right ends inside the appliance body 101, and a reflecting member 102 having a substantially L-shaped cross section is disposed below each discharge lamp La. The reflecting member 102 reflects light from the discharge lamp La to the upper side of the instrument main body 101 and simultaneously blocks light from the discharge lamp La from being directly irradiated below the instrument main body 101. Thus, the light from the discharge lamp La is reflected by the reflecting member 102 and the upper surfaces inside the instrument main body 101 and irradiated from the opening of the instrument main body 101 so that the lower part of the instrument main body 101 can be illuminated by indirect illumination.

Further, as shown in FIG. 7B, a reflecting member 102 having a substantially semicircular cross section is disposed at a substantially center in the left-right direction with the arc facing downward, and a pair of the reflecting member 102 is disposed in a space covered by the reflecting member 102. There is also known a lighting fixture in which a discharge plate La is disposed and a reflection plate 103 having a substantially semicircular cross section that reflects light from the discharge lamp La is disposed with its arc facing upward. Also in this lighting fixture, the light from the discharge lamp La is reflected by the reflecting member 102 and the reflecting plate 103 and irradiated from the opening of the fixture main body 101, so that the lower part of the fixture main body 101 can be illuminated by indirect illumination.
JP-A-5-81913

  However, in the above conventional example, although the lower part of the instrument main body 101 can be illuminated with indirect illumination, the reflecting member 102 is disposed at a position equal to or higher than the ceiling panel 104 in the vertical direction. There was a problem that the ceiling surface of A could not be illuminated with indirect lighting.

  This invention is made | formed in view of said point, and it aims at providing the lighting fixture which can illuminate a ceiling surface with indirect illumination.

  In order to achieve the above object, the invention of claim 1 is a lighting apparatus installed on a system ceiling formed by providing a ceiling panel between a plurality of ceiling bars suspended from a ceiling base, A main body, a socket disposed in the fixture main body to which the light source is detachably attached, a ballast disposed in the fixture main body for supplying lighting power to the light source via the socket, and a fixture main body fixed to the ceiling bar Mounting means for attaching the projector body to the ceiling bar, and the instrument body is provided with a projecting portion projecting downward from the ceiling bar, and mounted on the projecting portion and disposed opposite to the ceiling from the light source. And a reflecting member that reflects the light toward the ceiling, and a socket is provided on a surface of the reflecting member that faces the ceiling.

  The invention of claim 2 is characterized in that, in the invention of claim 1, an attachment panel for closing the space surrounded by the ceiling bar is provided, and the attachment means is provided on the attachment panel.

  According to a third aspect of the present invention, in the second aspect of the present invention, the protruding portion protrudes from one ceiling bar side of the mounting panel, and the reflection member has one end attached to the protruding portion and the other end. Is arranged so as to face the other ceiling bar.

  The invention of claim 4 is the invention of claim 2, comprising at least two pairs of sockets, wherein the projecting portions project from substantially the center between the ceiling bars of the mounting panel, and the reflecting member has both end portions thereof. Are arranged so as to face each ceiling bar, and each pair of sockets is arranged on both sides of the projecting portion.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the projecting portion and the reflecting member are formed in a size that fits in a space surrounded by the ceiling bar.

  According to the invention of claim 1, since the reflecting member is disposed below the ceiling bar, the light from the light source reflected by the reflecting member spreads and irradiates the ceiling surface, and therefore the ceiling surface is illuminated with indirect illumination. be able to.

  According to the invention of claim 2, since it is possible to attach the lighting fixture only by performing the same operation as the operation of attaching the ceiling panel to the ceiling, it is possible to easily change the design of the system ceiling without complicated construction. Can do.

  According to invention of Claim 3, the ceiling surface of any one side can be illuminated with indirect illumination among the adjacent ceiling panels.

  According to the invention of claim 4, the ceiling surface on either side of the adjacent ceiling panel can be illuminated with indirect illumination.

  According to the invention of claim 5, since the fixture body does not protrude into the space below the adjacent ceiling panel, when installing a plurality of lighting fixtures, the lighting fixtures are continuously installed on the ceiling without interfering with each other. The design can be improved.

(Embodiment 1)
Hereinafter, Embodiment 1 of the lighting fixture which concerns on this invention is demonstrated using drawing. However, in the following description, the top, bottom, left, and right in FIG. 1A are defined as the top, bottom, left, and right directions, the front side of the paper is defined as the front direction, and the back side of the paper is defined as the rear direction. As shown in FIGS. 1A to 1C, the present embodiment is installed on a system ceiling A formed by providing a ceiling panel 3 between a plurality of ceiling bars 2 suspended from a ceiling base. A lighting fixture, which is provided in the fixture body 1, a socket (not shown) that is detachably attached to the fixture body 1 and a straight tube-type discharge lamp La that is a light source. And a ballast (not shown) for supplying lighting power to the discharge lamp La through a socket. Each ceiling bar 2 is a so-called T-bar having a substantially T-shaped section and a rectangular section at the tip of the vertical piece, as in the conventional example, with the head facing upward. It is arranged.

  As shown in FIGS. 1A and 2, the instrument body 1 includes a flat mounting panel 10 that closes a substantially rectangular space surrounded by four ceiling bars 2 arranged in a lattice pattern, A substantially rectangular parallelepiped protruding portion 11 that protrudes downward from the right side of the mounting panel 10 in the front-rear direction, and a flat plate shape that is mounted on the lower end portion of the protruding portion 11 so as to face the mounting panel 10. The reflecting member 12 is configured in a generally U-shaped cross section.

  On both left and right edges of the mounting panel 10, locking projections 10a that are mounting means for the mounting panel 10 are formed integrally in the front-rear direction so as to protrude outward. Thus, as shown in FIG. 2, the mounting panel 10 is installed between the ceiling bars 2 by placing the locking projections 10 a on the heads of the pair of adjacent ceiling bars 2. Installed on system ceiling A. Further, as shown in FIG. 1B, a substantially circular insertion hole 10b is provided through the upper surface of the mounting panel 10, and an external power source (not shown) is connected through the insertion hole 10b. An electric wire (not shown) connecting the ballast is introduced into the instrument body 1.

  The reflecting member 12 is formed of a light-impermeable material such as a sheet metal, a resin material, or wood, for example. Which material is formed is appropriately determined in consideration of a sense of unity with the surrounding ceiling panel 3 and the like. The The length dimension of the reflection member 12 in the front-rear direction and the left-right direction is set to be substantially the same as the length dimension between the adjacent ceiling bars 2. For this reason, the mounting panel 10, the projecting portion 11, and the reflecting member 12 (that is, the instrument main body 1) are dimensions that can fit in a substantially rectangular space surrounded by the four ceiling bars 2 arranged in a lattice shape as a whole. It has become.

  As shown in FIG. 1B, a socket is disposed on the upper surface of the reflecting member 12 so that the discharge lamp La is disposed in the longitudinal direction thereof. Further, the upper surface of the reflecting member 12 is subjected to a process such as attaching a reflecting sheet that reflects light, and the light from the discharge lamp La is reflected toward the mounting panel 10 (ie, upward). It is like that. The lower surface of the reflecting member 12 is finished by cloth or painting, but the finishing method is appropriately determined in consideration of the material constituting the reflecting member 12 and a sense of unity with the surrounding ceiling panel 3 and the like. Needless to say.

  As described above, since the reflecting member 12 is disposed below the ceiling bar 2, as shown in FIG. 1A, the light from the discharge lamp La reflected by the reflecting member 12 is adjacent to one ceiling. The panel 3 (left side in the figure) is irradiated. Therefore, compared with the conventional lighting fixture which illuminates only the space below the fixture main body 101 shown in FIG. 3 (b) with indirect illumination, the ceiling surface on the one adjacent ceiling panel 3 side can be illuminated with indirect illumination. (See FIG. 3B).

(Embodiment 2)
Hereinafter, Embodiment 2 of the lighting fixture which concerns on this invention is demonstrated using drawing. However, in the following description, the top, bottom, left, and right in FIG. 4A are defined as the top, bottom, left, and right directions, the front side of the paper is defined as the front direction, and the back side of the paper is defined as the rear direction. In addition, since the basic configuration of the present embodiment is the same as that of the first embodiment, common portions are denoted by the same reference numerals and description thereof is omitted. As shown in FIGS. 4A to 4C, the present embodiment has two pairs of sockets (not shown) in which two discharge lamps La are respectively disposed, and the projecting portion 11 is attached The reflecting member 12 is provided so as to project downward from the substantially center in the left-right direction of the panel 10 in the front-rear direction, and the reflecting member 12 has a substantially center part in the left-right direction attached to the lower end part of the projecting part 11 and both left and right end parts thereof. Each is arranged to face each ceiling bar 2. For this reason, the instrument main body 1 has a substantially E-shaped cross section as a whole.

  The upper surface of the reflecting member 12 is divided into two parts on the left and right by the projecting portion 11, and the socket is disposed on each of the left and right surfaces so that the discharge lamp La is disposed along the longitudinal direction. . Thus, as shown in FIG. 4A, the light from the discharge lamp La disposed on the left side is reflected on the upper surface of the reflecting member 12 to illuminate the ceiling panel 3 adjacent to the left side with indirect illumination, Since the light from the discharge lamp La disposed on the right side is reflected on the upper surface of the reflecting member 12 to illuminate the ceiling panel 3 adjacent to the right side with indirect illumination, the ceiling surface on any adjacent ceiling panel 3 side is also indirectly illuminated. Can be illuminated with.

  Moreover, in each said embodiment, since the protrusion part 11 to which the reflection member 12 was attached is integrally formed with the attachment panel 10, said each by performing the operation | work similar to the attachment and removal operation | work of the ceiling panel 3. The embodiment is detachable from the system ceiling A. Thus, the design of the system ceiling A can be easily changed without complicated construction.

  In each of the above embodiments, the straight tube type discharge lamp La is used as the light source. However, the light source is not necessarily limited to the discharge lamp La, and for example, a linear light source composed of a light emitting diode is used instead. It doesn't matter.

  By the way, in each said embodiment, it is a dimension which fits in the substantially rectangular-shaped space enclosed by the four ceiling bars 2 with which the instrument main body 1 was arrange | positioned as a grid as a whole. For this reason, since the fixture main body 1 does not protrude into the space below the adjacent ceiling panel 3, when installing a plurality of lighting fixtures, it is possible to install the lighting fixtures continuously on the system ceiling A without interfering with each other. Yes, and can improve design.

  For example, as shown in FIG. 5A, by arranging a plurality (four in the drawing) of the lighting fixtures of the first embodiment in the approximate center of the system ceiling A, indirect illumination is performed on portions other than the approximate center of the system ceiling A. As shown in FIG. 5B, a plurality of lighting fixtures according to the first embodiment (12 pieces in the drawing) are arranged so as to surround a substantially central portion of the system ceiling A. Only a substantially central portion of A may be illuminated with indirect illumination. Moreover, as shown in FIG.5 (c), the lighting fixture of Embodiment 1 is arrange | positioned by the arbitrary one side of the system ceiling A, and it opposes the said one side of the system ceiling A by arrange | positioning. The side may be configured to illuminate with indirect illumination. As shown in FIG. 5D, a plurality (eight in the figure) of the lighting fixtures of Embodiment 1 are arranged on any two opposite sides of the system ceiling A. By providing, it is good also as a structure which illuminates the approximate center part of the system ceiling A by indirect illumination.

  In addition, when combining a plurality of lighting fixtures of the second embodiment, as shown in FIG. 6A, a plurality (three in the drawing) of the lighting fixtures of the second embodiment are arranged in the approximate center of the system ceiling A. The system ceiling A may be configured to illuminate both sides sandwiching the approximate center with indirect illumination. Further, as shown in FIG. 6B, a plurality of lighting fixtures according to the second embodiment (six in the drawing) are arranged in parallel at a predetermined interval along the longitudinal direction of the system ceiling A, so that the system ceiling A It is good also as a structure which illuminates the site | part which left the predetermined space | interval along the longitudinal direction with indirect illumination. Of course, combinations other than those described above may be used.

It is a figure which shows Embodiment 1 of the lighting fixture which concerns on this invention, (a) is sectional drawing, (b) is the perspective view seen from upper direction, (c) is the perspective view seen from the downward direction. It is a perspective view which shows the attachment method same as the above. It is explanatory drawing of indirect illumination same as the above, (a) is a perspective view which shows the indirect illumination of Embodiment 1, (b) is a perspective view which shows the indirect illumination of a prior art example. It is a figure which shows Embodiment 2 of the lighting fixture which concerns on this invention, (a) is sectional drawing, (b) is the perspective view seen from upper direction, (c) is the perspective view seen from the downward direction. (A)-(d) is a figure which shows the structure using two or more lighting fixtures of Embodiment 1. FIG. (A), (b) is a figure which shows the structure using two or more lighting fixtures of Embodiment 2. FIG. (A), (b) is sectional drawing which shows the conventional lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument body 10 Mounting panel 10a Locking protrusion (attachment means)
DESCRIPTION OF SYMBOLS 11 Projection part 12 Reflecting member 2 Ceiling bar 3 Ceiling panel A System ceiling La Discharge lamp (light source)

Claims (5)

  A lighting fixture installed on the ceiling of a system formed by providing a ceiling panel between a plurality of ceiling bars suspended from the ceiling base. The fixture main body and the fixture main body are detachable. An instrument body comprising: a socket to be attached; a ballast that is disposed in the instrument body and supplies lighting power to the light source via the socket; and an attachment means that is fixed to the ceiling bar and attaches the instrument body to the ceiling bar. Has a projecting portion projecting downward from the ceiling bar, and a reflecting member attached to the projecting portion and disposed facing the ceiling to reflect light from the light source to the ceiling side, A lighting fixture, wherein a socket is provided on a surface of the reflecting member facing the ceiling.   The lighting fixture according to claim 1, further comprising: a mounting panel that closes a space surrounded by the ceiling bar, wherein the mounting means is provided on the mounting panel.   The protruding portion protrudes from one ceiling bar side of the mounting panel, and the reflection member is disposed so that one end portion is attached to the protruding portion and the other end portion faces the other ceiling bar. The lighting fixture according to claim 2, wherein   Having at least two pairs of sockets, the projecting portion projecting from substantially the center between the ceiling bars of the mounting panel, and the reflecting member is disposed so that both end portions thereof face each ceiling bar; 3. The lighting fixture according to claim 2, wherein each pair of sockets is disposed on both sides of the protruding portion.   The lighting device according to any one of claims 1 to 4, wherein the protruding portion and the reflecting member are formed to have a size that fits in a space surrounded by a ceiling bar.

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