JP2008293802A - Luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire for improving its appearance and suppressing increase in cost. <P>SOLUTION: The lighting apparatus A has an apparatus body 1 with an oblong substantially rectangular box shape, a straight tube type fluorescent lamp 7 is housed within the apparatus body 1 along a longitudinal direction, and apparatus mounting portions 1a for hanging the apparatus body 1 from a ceiling surface are integrally provided at both sides of a longitudinal direction of the fluorescent lamp 7 in the apparatus body 1. Additionally, at the lower surface side of the apparatus body 1, a straight-tube type fluorescent lamp 8, having a longer size in a longitudinal direction than that of the fluorescent lamp 7, is mounted parallel to the fluorescent lamp 7, and at a lower side of the fluorescent lamp 8, a transparent cover 3 with an oblong almost rectangular box shape which has an opening at an upper side thereof is mounted to the apparatus body 1 so as to cover the fluorescent lamp 8. Additionally, both the end portions of the fluorescent lamp 8 are arranged near the both end portions of the cover 3 so that spaces 3a, between the both end portions of the lamp and both end portions of the cover 3, are smaller than a wire housing portion 1d provided within the apparatus mounting portion 1a of the apparatus body 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting fixture in which light sources are arranged above and below.

  Conventionally, there has been a lighting fixture using two types of single-piece fluorescent lamps having different emission colors (see, for example, Patent Document 1). This lighting fixture covers a horizontally long fixture body, first and second single-piece fluorescent lamps attached to the fixture body via a lamp socket provided on the fixture main body, and first and second single-piece fluorescent lamps. And a translucent cover attached to the instrument body. The lamp sockets are respectively provided at both end sides along the longitudinal direction of the fixture body with the lamp mounting surfaces facing each other, and are arranged at different heights in the vertical direction in the mounted state. In this luminaire, the user selects either the first or second single base fluorescent lamp, and light is emitted from the selected single base fluorescent lamp.

The above-mentioned luminaire is provided with light sources of two colors. As shown in FIG. 3A, the first straight tube type fluorescent lamp 7 for upward illumination and the second straight tube for downward illumination. There has also been proposed a ceiling-suspended lighting fixture A in which fluorescent lamps 8 are vertically arranged. This luminaire A has a horizontally-long substantially box-shaped fixture body 1, and the fixture body 1 is equipped with a fluorescent lamp 7 via a lamp socket 5. Are integrally provided with an instrument mounting portion 1a for suspending the instrument body 1 from the ceiling surface. A fluorescent lamp 8 is attached to the lower surface of the instrument body 1 in parallel with the fluorescent lamp 7 via the lamp socket 6, and a translucent cover 3 is provided below the fluorescent lamp 8. It is attached to the instrument main body 1 so that it may cover. In this lighting fixture A, the irradiation light from the fluorescent lamp 7 passes through the light transmitting plate 2 provided on the upper surface of the fixture body 1 and is irradiated upward, and the irradiation light from the fluorescent lamp 8 passes through the cover 3. Irradiated downward.
Japanese Patent Laying-Open No. 2005-310723 (paragraphs [0017]-[0021] and FIGS. 1 to 2)

  In the latter lighting fixture A described above, the fixture body 1 is formed in a box shape with a narrow width dimension, and a light-transmitting portion having a width dimension similar to that of the fixture body 1 is provided in the upper part of the fluorescent lamp 7. Therefore, the fixture mounting portions 1a have to be disposed on both sides in the longitudinal direction of the fluorescent lamp 7, and as a result, the overall length of the fixture main body 1 and the cover 3 is longer than the total length of the fluorescent lamp 7. Therefore, when the fluorescent lamp 8 has the same length as that of the fluorescent lamp 7, an unnecessary space 3a is formed on both sides in the longitudinal direction of the fluorescent lamp 8 (B portion in FIG. 3B). When turned on, there is a problem that light does not reach the space 3a, both end portions of the cover 3 become darker than the central portion, and the appearance is deteriorated due to color spots of the cover 3. Further, as shown in FIG. 3C, the color spots of the cover 3 can be eliminated by covering the space 3a with the opaque cover 13, but the appearance is deteriorated and the cost is increased by attaching the cover 13. There was a problem of becoming.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting apparatus that improves the appearance and suppresses the increase in cost.

  According to the first aspect of the present invention, the first straight tube type lamp for upward illumination is housed inside, and a light transmitting portion is provided for transmitting the irradiation light from the first straight tube type lamp upward, and the first straight tube type lamp is provided. An appliance main body provided with an appliance mounting portion for hanging from the ceiling surface on both sides in the longitudinal direction of the tube lamp, and a second straight tube disposed substantially parallel to the first straight tube lamp on the lower surface of the appliance main body. And a translucent cover that is attached to the instrument body so as to cover the tube lamp and transmits downward the irradiation light from the second straight tube lamp. The second straight tube lamp has a length in the longitudinal direction longer than that of the first straight tube lamp, and the second straight tube lamp has a second length in the longitudinal direction of the lamp. The space between both ends of the straight tube lamp and both ends of the cover is the arrangement of the fixture mounting parts. It characterized in that both ends of the second straight tube lamps arranged close to the opposite ends of the cover so as to be smaller than the space.

  According to the first aspect of the present invention, both ends of the second straight tube lamp are disposed close to both ends of the cover, thereby irradiating both ends of the cover with light from the second straight tube lamp. Therefore, the color spots on the cover can be eliminated, and thus the appearance of the lighting fixture when the lamp is lit can be improved. Moreover, since both ends of the cover do not become dark, it is not necessary to cover both ends with an opaque cover or the like, and there is an effect that the appearance of the lighting fixture can be improved and the increase in cost can be suppressed.

  An embodiment of the present invention will be described with reference to FIGS. The lighting fixture A of the present embodiment is suspended and supported at both ends in the longitudinal direction of the fixture body 1 by a pair of suspension members 9 fixed to, for example, a ceiling surface (not shown), and simultaneously illuminates the upper and lower sides. Used for.

  As shown in FIGS. 1 and 2, the lighting fixture A includes a horizontally-long substantially rectangular box-shaped fixture body 1 and a fluorescent lamp (first straight tube type) housed inside the fixture body 1 to illuminate the top. Lamp) 7, a fluorescent lamp (second straight tube lamp) 8 that is attached to the lower surface of the instrument body 1 to illuminate the lower side, and a fluorescent lamp that is attached to the lower surface side of the instrument body 1 so as to cover the fluorescent lamp 8. And a translucent cover 3 that transmits light from the lamp 8 downward.

  The instrument main body 1 has an elongated, oblong, substantially rectangular box shape, and a substantially rectangular opening 1b is provided on the upper surface along the longitudinal direction. In addition, since the opening part 1b is provided in the dimension in which the opening dimension of the width direction is slightly small with respect to the width dimension of the instrument main body 1, the suspension member 9 is provided on both sides of the opening part 1b in the width direction of the instrument main body 1. Can not be installed. Therefore, in the present embodiment, the instrument mounting portions 1a and 1a for mounting the instrument main body 1 to the suspension members 9 and 9 are provided integrally with the instrument main body 1 on both ends in the longitudinal direction of the instrument main body 1, respectively. Further, an electric wire insertion hole 1c for inserting a power supply line 10 for supplying power to a lighting circuit block 11 described later is provided on the upper surface of one (left side in FIG. 2) of the fixture mounting portion 1a.

  A substantially rectangular plate-like fixing plate 12 for fixing the suspension member 9 is integrally formed on the upper surface side inside the instrument body 1 so as to be substantially parallel to the upper surface of the instrument body 1. The instrument body 1 is suspended and supported by being fixed to the fixing plate 12 by screwing a nut or the like. In addition, a substantially rectangular opening 12a is provided in a portion of the fixing plate 12 corresponding to the opening 1b of the instrument body 1, and the translucent light is applied to the upper surface of the fixing plate 12 so as to close the opening 12a. A substantially rectangular plate-like panel 2 made of a synthetic resin having properties is attached. Here, a translucent portion is constituted by the opening 12 a of the fixing plate 12, the panel 2, and the opening 1 b of the instrument main body 1. The panel 2 is detachably attached to the fixing plate 12 using a coupling means (not shown). When replacing the fluorescent lamp 7 housed in the instrument body 1, the panel 2 is removed and replaced through the opening 12a. To do.

  Furthermore, lamp sockets 5 are respectively attached to both ends in the longitudinal direction inside the appliance main body 1 with the socket mounting surfaces facing each other with the lamp mounting surfaces facing each other. A space (that is, an internal space of the instrument mounting portion 1a) is provided on the outside of 5. In addition, a lighting circuit block 11 for supplying lighting power to the fluorescent lamps 7 and 8 is housed near the center in the longitudinal direction inside the appliance main body 1, and the lighting circuit block 11 and the lamp socket 5 and will be described later. The lamp socket 6 is electrically connected via an electric wire (not shown). Further, a straight tubular fluorescent lamp 7 is mounted between the lamp sockets 5 and 5, and this fluorescent lamp 7 is mechanically held in the lamp socket 5 via a base 7b provided at both ends and is electrically connected. Are connected to each other, and the lighting power is supplied through the lamp socket 5. In the present embodiment, an electric wire storage portion 1d for storing the power line 10 introduced into the instrument main body 1 from the outside is configured by the space on one end side (left side in FIG. 2).

  In addition, lamp sockets 6 are respectively mounted near the both ends in the longitudinal direction on the lower surface of the fixture body 1 with the lamp mounting surfaces exposed to the outside (lower side) and facing each other. A cover 3 having a substantially rectangular box shape with an open top and having translucency is attached to the instrument body 1. The cover 3 is, for example, a synthetic resin molded product such as an acrylic resin, and has a length dimension and a width dimension substantially the same as those of the instrument main body 1. The cover 3 is attached to the instrument main body 1 using a coupling means (not shown). It is detachably attached. Therefore, when the fluorescent lamp 8 is replaced, it can be easily replaced by removing the cover 3. Further, a straight tube fluorescent lamp 8 is mounted between the lamp sockets 6 and 6 in parallel with the fluorescent lamp 7, and the fluorescent lamp 8 is mechanically connected to the lamp socket 6 via a cap 8b provided at both ends. And is electrically connected, and the lighting power is supplied through the lamp socket 6.

  In the present embodiment, as shown in FIG. 1 (a), each lamp socket 6 is disposed close to both ends along the longitudinal direction of the cover 3, so that the internal space (FIG. 1) of the appliance mounting portion 1a described above. The space 3a between the cover 3 and each lamp socket 6 is smaller than the wire housing portion 1d) of (a). That is, since the lamp socket 6 is disposed outside the lamp socket 5 in the longitudinal direction of the fixture body 1, in this embodiment, the fluorescent lamp 8 has a length dimension of the arc tube 8 a along the longitudinal direction of the fluorescent lamp 7. A longer tube than the length of the arc tube 7a is employed. For example, a fluorescent lamp 7 having a length of 1149 mm is used, and a fluorescent lamp 8 having a length of 1198 mm is used. In this case, the instrument mounting portion whose dimension in the longitudinal direction of the instrument body 1 is about 25 mm on one side. 1a and 1a can be secured.

  Here, operation | movement of this lighting fixture A is demonstrated. When the lighting power is supplied from the lighting circuit block 11, the fluorescent lamps 7 and 8 are turned on, and the light emitted from the arc tube 7a of the fluorescent lamp 7 passes through the panel 2 and is irradiated to the outside through the opening 1b. Illuminate the top. On the other hand, the light emitted from the arc tube 8a of the fluorescent lamp 8 passes through the cover 3 and is irradiated to the outside to illuminate the lower part.

  In the lighting fixture A of the present embodiment, even when the fixture mounting portions 1a are provided at both ends in the longitudinal direction of the fixture body 1, the length dimension of the arc tube 8a as the fluorescent lamp 8 for downward irradiation is for upward irradiation. The fluorescent lamp 7 is longer than the arc tube 7a, and the lamp sockets 6 are arranged close to both ends in the longitudinal direction of the cover 3, so that the light emitted from the arc tube 8a Since it can irradiate to both ends, the color spot of the cover 3 can be eliminated, and therefore the appearance of the luminaire A when the lamp is lit can be improved. Moreover, since the both ends of the cover 3 do not become dark, it is not necessary to cover with an opaque cover etc., and the external appearance of the lighting fixture A can be improved and cost increase can be suppressed.

The lighting fixture of this embodiment is shown, (a) is sectional drawing seen from the front partly broken, (b) is sectional drawing seen from the side surface. It is a perspective view same as the above. The lighting fixture of a prior art example is shown, (a) is sectional drawing seen from the front partly broken, (b) is a perspective view partly broken, (c) is a perspective view partly broken with the cover attached It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Instrument body 1a Instrument mounting part 1b Opening part 2 Panel 3 Cover 7 Fluorescent lamp (1st straight tube type lamp)
8 Fluorescent lamp (second straight tube lamp)
12a Opening A Lighting equipment

Claims (1)

  A first straight tube lamp for upward illumination is housed inside, a light transmitting portion is provided to transmit the irradiation light from the first straight tube lamp upward, and both sides in the longitudinal direction of the first straight tube lamp are provided. An instrument body provided with an instrument mounting portion for hanging from the ceiling surface at the part, and a second straight tube lamp disposed on the lower surface side of the instrument body in parallel with the first straight tube lamp And a translucent cover that allows the irradiation light from the second straight tube lamp to pass downward, and the entire length of the instrument body and the total length of the cover are substantially the same in the longitudinal direction of the lamp. The length of the second straight tube lamp is longer than that of the first straight tube lamp, and both ends of the second straight tube lamp in the longitudinal direction of the lamp. The space between the cover and both ends of the cover is smaller than the space for mounting the instrument So as to luminaires, characterized in that both ends of the second straight tube lamps arranged close to the opposite ends of the cover.

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