JP2010067412A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of easily reducing unevenness of light in the whole lighting space without impairing designability. <P>SOLUTION: The luminaire includes: a long box-shaped equipment body 1 opened downward, which includes a first side plate 11, a second side plate 12, and a top plate 10, and is embedded in a ceiling surface B by making the first side plate 11 abut on a wall surface A; a socket 20; a reflector 3 provided in a space among the top plate 10, the second side plate 12, and a fluorescent lamp La within the equipment body 1, the reflector diffusively reflecting the light from the fluorescent lamp La downward; a light-shielding plate 4 provided on the first side plate 11, the light-shielding plate protruding from the reflector 3-side end surface of the fluorescent lamp La in a direction vertical to the wall surface A and covering below the fluorescent lamp La; and a long plate-like non-reflecting member 6 provided at the lower end of the reflector 3 to absorb the light from the fluorescent lamp La and the reflector 3. The non-reflecting member 6 is disposed to face a part other than the vicinity of the base of the fluorescent lamp La. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting fixture for indirect lighting embedded in a ceiling.

Conventionally, for example, Patent Literature 1 discloses a lighting fixture for indirect illumination that blocks light from a light source such as a fluorescent lamp to avoid direct light and reflects the light to a ceiling or a wall to make indirect light. There is something. Hereinafter, a conventional example described in Patent Document 1 will be described with reference to the drawings. In this conventional example, as shown in FIG. 6, an instrument main body 101 attached to a wall surface and mounted with a straight fluorescent lamp 100 is opposed to the instrument main body 101 across the fluorescent lamp 100 in a direction perpendicular to the wall surface. And a part of the reflecting plate 102 facing the both ends of the fluorescent lamp 100, and a part of the reflecting plate 102 protrudes to the outside of the instrument body 101, and the light from the fluorescent lamp 100 is transmitted to the outside of the instrument body 101. And an auxiliary reflection plate 103 for reflection. Thus, for example, when the end portions of a plurality of lighting fixtures are connected to each other in a passage or the like, the wall surface facing the end portion of the fluorescent lamp 100 can be illuminated. Can be reduced.
JP 2007-134174 A

  However, when the auxiliary reflector 103 is provided as in the above-described conventional example, the unevenness of light in the entire illumination space can be reduced, but the auxiliary reflector 103 enters the field of view when looking up at the instrument body 101 from below. As a result, there was a problem that the designability was impaired. Moreover, in order to avoid the said problem, there also existed a problem that it was difficult to arrange | position inside the instrument main body 101 so that the auxiliary | assistant reflecting plate 103 might not enter into view.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a luminaire that can easily reduce the unevenness of light in the entire illumination space without impairing the design.

  In order to achieve the above object, the invention of claim 1 has a long plate-like top plate that connects the long side plate-like first side plate and the second side plate, and the upper ends of both side plates, A long box-shaped instrument body with the first side plate abutting against the wall surface and opening the bottom surface embedded in the ceiling surface, and a straight tube fluorescent lamp attached to the first side plate are detachable A socket mounted on the light source, a reflecting plate provided in a space between the top plate and the second side plate and the fluorescent lamp inside the instrument body and diffusing and reflecting light from the fluorescent lamp downward; A light-shielding plate provided on the side plate and projecting from the end surface of the fluorescent lamp on the reflecting plate side in a direction perpendicular to the wall surface and covering the lower side of the fluorescent lamp; and light from the fluorescent lamp and the reflecting plate provided at the lower end of the reflecting plate A non-reflective member that absorbs light, and the non-reflective member has a long plate shape, Characterized in that it is arranged to site facing the other of the base near.

  The invention of claim 2 is characterized in that, in the invention of claim 1, the non-reflective member is disposed on a plane parallel to the wall surface.

  The invention of claim 3 is the invention of claim 1 or 2, characterized in that the non-reflective member is formed such that the width dimension of the end portion in the longitudinal direction is smaller than the width dimension of other portions. .

  According to the first aspect of the present invention, the amount of light irradiated from the vicinity of the base of the fluorescent lamp whose light quantity is smaller than that of the other part is obtained by absorbing the light from the part other than the vicinity of the base of the fluorescent lamp by the non-reflective member. And the irradiation amount of light from other parts can be made uniform. Therefore, it is not necessary to provide an auxiliary reflecting plate as in the conventional example, and light unevenness in the entire illumination space can be easily reduced without impairing the design.

  According to the invention of claim 2, the non-reflective member is difficult to enter the field of view when the instrument body is looked up from below, so that the design can be improved.

  According to the invention of claim 3, it is possible to make the irradiation amount of light from the vicinity of the base of the fluorescent lamp having a smaller light quantity and the irradiation amount of light from the other part more uniform than other parts, and therefore The unevenness of light in the entire illumination space can be further reduced.

  Hereinafter, embodiments of a lighting apparatus according to the present invention will be described with reference to the drawings. In the following description, the vertical direction in FIG. 1 is defined as the vertical direction. In the present embodiment, as shown in FIG. 1, a long plate-like top plate 10 that connects long plate-like first side plates 11 and second side plates 12 and upper ends of both side plates 11, 12 is provided. A fixture body 1 having a lower surface embedded in the ceiling surface B with the first side plate 11 in contact with the wall surface A, and a straight tube fluorescent lamp attached to the first side plate 11 A pair of sockets 20 to which La is detachably attached, and a space between the top plate 10 and the second side plate 12 and the fluorescent lamp La inside the instrument main body 1 to direct light from the fluorescent lamp La downward From the reflecting plate 3 that diffuses and reflects, and from the end surface of the fluorescent lamp La on the reflecting plate 3 side in a direction perpendicular to the wall surface A (hereinafter referred to as “horizontal direction”) provided at the lower end of the first side plate 11. Projecting and covering the lower part of the fluorescent lamp La, and provided at the lower end of the reflector 3 It is in and a non-reflective member 6 for absorbing light from the fluorescent lamp La and the reflector 3.

  As shown in FIGS. 1 to 4, the instrument body 1 has a substantially U-shaped cross section, and is formed in a box whose length in the longitudinal direction substantially matches the length in the longitudinal direction of the fluorescent lamp La. And is suspended by a plurality of suspension bolts 9 depending from a ceiling surface (not shown) located above the ceiling surface B. A long plate-shaped socket mounting plate 2 provided with a pair of sockets 20 to which the caps at both ends in the longitudinal direction of the fluorescent lamp 1 are detachably connected to the inner surface of the instrument body 1 of the first side plate 11. Is attached. In addition, a lighting device for supplying electric power necessary for lighting to the fluorescent lamp La via a socket 20 is provided inside the appliance body 1 though not shown. Thus, by connecting a power line (not shown) routed from an external power source (not shown) to the terminal block 7 provided on the lower surface of the top plate 10, power is supplied to the lighting device. The fluorescent lamp La is turned on. Furthermore, as shown in FIG. 1, a flat plate-like reinforcing plate 8 that contacts the top plate 10, the first side plate 11, and the second side plate 12 is provided along the longitudinal direction of the device main body 1. A plurality (one in the figure) are provided to prevent the instrument body 1 from being deformed by an external force or the like.

  As shown in FIGS. 1 to 3, the socket mounting plate 2 includes a first mounting plate 22 on which sockets 20 are provided at predetermined intervals along the longitudinal direction, and a second mounting portion from the upper end of the first mounting plate 22. A second mounting plate 23 extending in the horizontal direction toward the side plate 12, and extending from the lower end portion of the first mounting plate 22 toward the second side plate 12 in a direction inclined slightly downward from the horizontal direction. And a third mounting plate 24 having a substantially L-shaped cross section. Then, one end of a reflection plate 3 to be described later is attached to the second attachment plate 23 by screwing, and a magnet 21 to be described later is disposed on the third attachment plate 24.

  The reflecting plate 3 is formed of a metal plate, and the inner surface facing the fluorescent lamp La is painted with a white paint, and as shown in FIGS. And a drooping portion 31 extending vertically downward from the lower end of the bending portion 30. The inner surfaces of the curved portion 30 and the hanging portion 31 are configured such that incident light is diffused and reflected by providing fine irregularities, for example. Thus, the light from the fluorescent lamp La is reflected by the inner surface of the reflecting plate 3 and is applied to the wall surface A below the instrument body 1 and the space below the instrument body 1. In addition, a non-reflective member 6 to be described later is joined to the hanging portion 31 by rivets.

  The light shielding plate 4 is formed of a metal plate and its lower surface is painted with a white paint. As shown in FIGS. 1 and 4, the end portion on the wall surface A side is a lower end portion of the first side plate 11 via a hinge 40. Is attached. Three hinges 40 are provided at equal intervals along the longitudinal direction at the end of the light shielding plate 4 on the wall surface A side. Thus, the light shielding plate 4 is rotatable between a position where the fluorescent lamp La is covered and a position where the fluorescent lamp La is faced downward, with the end on the wall surface A side as an axis. Here, the rotation range of the light shielding plate 4 is restricted by the third mounting plate 24, and is caused by the magnetic force of the magnet 21 disposed on the third mounting plate 24 at a position in contact with the third mounting plate 24. Fixed. Therefore, in order to rotate the light shielding plate 4, the light shielding plate 4 may be pushed downward against the magnetic force of the magnet 21.

  At the position where it abuts on the third mounting plate 24, the light shielding plate 4 has an end facing the second side plate 12 above the end provided on the first side plate 11, that is, the end on the wall surface A side. And at least above the lower end of the reflector 3. In the present embodiment, the end portion facing the second side plate 12 is above the boundary between the bending portion 30 and the hanging portion 31, and is substantially at the center of the bending portion 30 on a straight line connecting each end portion of the light shielding plate 4. The light shielding plate 4 is positioned so that the portion is positioned. For this reason, the inclination angle of the light shielding plate 4 with respect to the horizontal direction is about 30 degrees. Thus, the light shielding plate 4 blocks the direct light from the fluorescent lamp La on its upper surface and reflects the reflected light from the reflecting plate 3 on its lower surface to irradiate the space below the instrument body 1. It has become.

  A mounting frame 5 that covers the space between the second side plate 12 and the ceiling surface B is attached to the lower end of the second side plate 12 as shown in FIGS. The mounting frame 5 is made of, for example, a metal material such as aluminum, has a substantially triangular cross-section that becomes wider as it goes upward with its lower end as an apex angle, and the length in the longitudinal direction is the length of the second side plate 12. It is formed so as to substantially match the length of the direction. An insertion groove 50 through which an attachment screw S for attaching itself to the second side plate 12 is inserted is recessed in the upper end portion of the attachment frame 5 along the longitudinal direction. Thus, the mounting frame 5 is screwed with the mounting screw S in a state where the insertion groove 50 and a plurality of screw insertion holes (not shown) provided in the lower end portion of the second side plate 12 are overlapped. Is attached to the second side plate 12. Further, a locking groove 51 that locks a standing piece 12a extending in a direction from the lower end portion of the second side plate 12 toward the wall surface A is provided along the longitudinal direction in a substantially central portion of the mounting frame 5 in the vertical direction. Are recessed. Further, a locking piece 52 extending in the horizontal direction is integrally formed at the lower end portion of the mounting frame 5, and the second side plate is brought into contact with the lower surface of the ceiling surface B by the locking piece 52. 12 and the ceiling surface B are covered without a gap.

  The non-reflective member 6 is formed of a metal plate, and as shown in FIGS. 1 and 5, a long flat main plate 60 disposed in the hanging portion 31 of the reflective plate 3, and a curved portion from the upper end of the main plate 60. And an elongated flat plate-like auxiliary plate 61 that is inclined and extended in a direction toward 30. One surface of the non-reflective member 6 facing the fluorescent lamp La is subjected to a process such as applying a matting agent to absorb light from the fluorescent lamp La or the reflecting plate 3. Further, as shown in FIG. 5, the non-reflective member 6 has a length in the longitudinal direction shorter than the length in the longitudinal direction of the fluorescent lamp La, and other than the vicinity of the base of the fluorescent lamp La (see a in FIG. 5). It arrange | positions so that this site | part may be opposed. Thus, by absorbing the light from the part other than the vicinity of the base of the fluorescent lamp La by the non-reflecting member 6, the amount of light emitted from the vicinity of the base of the fluorescent lamp La, which is smaller than the other part, and the like. The amount of light emitted from the region is made uniform.

  As described above, since the long plate-like non-reflective member 6 is disposed so as to face the portion other than the vicinity of the base of the fluorescent lamp La, the light from the portion other than the vicinity of the base of the fluorescent lamp La is not reflected. By absorbing at 6, the light irradiation amount from the vicinity of the base of the fluorescent lamp La, which has a smaller light amount than other portions, and the light irradiation amount from other portions can be made uniform. Therefore, it is not necessary to provide the auxiliary reflector 103 as in the conventional example, and the unevenness of light in the entire illumination space can be easily reduced without impairing the design.

  Here, in the present embodiment, the auxiliary plate 61 of the non-reflective member 6 is formed so that the width dimension of the end portion in the longitudinal direction is smaller than the width dimension of other portions. Thus, it is possible to make the irradiation amount of light from the vicinity of the base of the fluorescent lamp La having a small amount of light as compared with other portions and the irradiation amount of light from other portions more uniform, and thus the entire illumination space. Light unevenness can be further reduced.

  By the way, in this embodiment, although the non-reflective member 6 is comprised with the main plate 60 and the auxiliary plate 61, it comprises only the main plate 60 without providing the auxiliary plate 61, and the main plate 60 is made into the hanging part 31 of the reflecting plate 3, That is, it is desirable to arrange on a plane parallel to the wall surface A. By comprising in this way, when the instrument main body 1 is looked up from the downward direction, the non-reflective member 6 becomes difficult to enter a visual field, and the design property can be improved.

  In this embodiment, a pair of sockets 20 is provided to use the fluorescent lamp La having the bases at both ends in the longitudinal direction. For example, if a fluorescent lamp La having a base at only one end in the longitudinal direction is used. Only one socket 20 may be provided.

It is principal part sectional drawing which shows embodiment of the lighting fixture which concerns on this invention. It is a disassembled perspective view in which a part was omitted. It is the perspective view seen from the side same as the above. It is the perspective view seen from the downward same as the above. It is a figure which shows a non-reflective member same as the above, (a) is a front view, (b) is the figure seen from upper direction. It is the schematic which shows the conventional lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument main body 10 Top plate 11 1st side plate 12 2nd side plate 20 Socket 3 Reflecting plate 4 Light-shielding plate 6 Non-reflective member A Wall surface B Ceiling surface La Fluorescent lamp

Claims (3)

  It has a long plate-like top plate that connects the long side plate-like first side plate and the second side plate, and the upper ends of both side plates, and the first side plate is brought into contact with the wall surface and buried in the ceiling surface. A long box-shaped instrument main body with an open bottom surface, a socket attached to the first side plate and detachably mounted with a straight tube fluorescent lamp, and a top plate and a second plate inside the instrument main body. A reflecting plate provided in a space between the second side plate and the fluorescent lamp for diffusing and reflecting the light from the fluorescent lamp downward; and a reflecting plate provided on the first side plate and perpendicular to the wall surface. A light-shielding plate that protrudes from the end surface on the plate side and covers the lower side of the fluorescent lamp, and a non-reflective member that is provided at the lower end of the reflective plate and absorbs light from the fluorescent lamp and the reflective plate, It is a long plate and is placed so as to face parts other than the vicinity of the base of the fluorescent lamp. Luminaire, characterized in that the.   The lighting device according to claim 1, wherein the non-reflective member is disposed on a surface parallel to the wall surface. The lighting device according to claim 1, wherein the non-reflective member is formed such that a width dimension of an end portion in a longitudinal direction is smaller than a width dimension of another portion.

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