JP2009016309A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture capable of easily restraining intensity unevenness for a lighting fixture having a fixture body with an odd length dimension in spite of recent tendency of a thin design for a lighting fixture. <P>SOLUTION: The lighting fixture 100 has a plurality of straight tube lamps 2 standardized at designated length dimensions, and an approximately rectangular parallelepiped-shaped fixture body 1 wherein the straight tube lamps 2 are stored while they are arranged at least in parallel. The fixture body 1 supporting the plurality of straight tube lamps 2 includes a housing 11 having an opening 11c at a front side which is a lighting direction of the straight tube lamp 2, and a semi-transparent panel 12 arranged on the opening 11c of the housing 11. The housing 11 is formed at a size wherein a designated space S exists between an end section of the straight tube lamp 2 in the length direction and a side 11b of the housing 11 facing to the end section. An auxiliary lamp 3 having the same standard as the straight tube lamp 2 extended in a direction approximately crossing the extending direction of the straight tube lamp 2 is arranged in the space S. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting fixture with a panel.

  2. Description of the Related Art Conventionally, there has been known a lighting fixture configured by housing a plurality of straight tube lamps whose length dimensions are standardized in a substantially rectangular parallelepiped fixture body (Patent Document 1). In such a lighting fixture, the plurality of straight tube lamps are accommodated in the fixture main body in a state where the length directions of the respective lamps are aligned and arranged in a specific arrangement. Note that, in the above specific arrangement, the straight tube lamps are arranged in series (vertically arranged) so that the ends of the straight tube lamps face each other in the length direction, or the straight tube lamp ends are orthogonal to the length direction. There is a method of arranging in parallel (side by side) so as to be aligned in a line in the direction, but here, at least the parallel array is included.

  By the way, in recent years, the above-mentioned fixture body has been manufactured in various sizes according to the installation location of the lighting fixture. Among them, the fixture body has a length that is half the length of the standard length of the straight tube lamp. That is, when the straight tube lamps are arranged and accommodated in the above specific arrangement, there are many cases where an excessive space exists at the end in the length direction in the instrument body. For example, when the length of the straight tube lamp is about 1200 mm, it is said that the length of the instrument body is preferably about 1250 mm. However, in recent years, an instrument body having a length of about 1500 mm has also been manufactured. Has been.

  When standard length straight tube lamps are arranged and accommodated in such an instrument body in the above-described arrangement, the straight tube lamps are not positioned at the end of the instrument body in the length direction. As a result, when the panel arranged on the front side of the fixture body is viewed from the outside, the edge of the panel looks darker than the central portion, that is, the brightness unevenness of the panel occurs. It looks bad.

For such inconvenience, conventionally, the luminance unevenness has been suppressed by adjusting the shape, position, and the like of the reflector disposed around the straight tube lamp in the instrument body.
JP-A-6-302207

  However, in recent years, the brightness unevenness of the panel is becoming more noticeable due to the thinning of the luminaire, and the method for adjusting the shape and position of the reflector as described above can be freely adjusted due to the thickness space. Since the degree is largely limited, a more advanced adjustment technique is required to suppress uneven brightness. As a result, suppression of luminance unevenness has become increasingly difficult.

  The present invention has been made to solve the above-described problems, and easily suppresses uneven luminance even for a lighting fixture that has a tendency to be thin and has a half-length fixture body. It is an object of the present invention to provide a lighting apparatus capable of performing the above.

  In achieving the above object, the inventors of the present invention do not control the luminance unevenness of the panel by adjusting the reflector, but effectively use the excess space and efficiently arrange the lamp in the space. Pursued to control brightness unevenness. That is, conventionally, it is possible to suppress the brightness unevenness of the panel by adjusting the shape and position of the reflector. However, as the luminaire becomes thinner, the degree of freedom of adjustment of the reflector is limited. It was difficult to control unevenness. On the other hand, if the lamp arrangement is devised, the degree of freedom of lamp arrangement is not greatly limited even if the lighting fixture is thinned, so that the brightness unevenness of the panel can be easily adjusted. It is.

  The invention of claim 1 made from such a point of view generally accommodates a plurality of straight tubular first lamps standardized to a predetermined length dimension and at least the first lamps arranged in parallel. A luminaire having a rectangular parallelepiped main body, the fixture main body supporting the plurality of first lamps, and a housing having an opening on a front side which is an illumination direction of the first lamp; A translucent panel provided in an opening of the housing, wherein the housing has a size in which a predetermined space exists between an end portion of the first lamp in a length direction and a side surface of the housing facing the end portion. A straight tube-shaped second lamp of the same standard as the first lamp extending in a direction substantially orthogonal to the extending direction of the first lamp is disposed in the space. In .

  Note that “parallel” in the present invention is a state in which the length directions of the straight tube lamps are aligned, and the end portions of the straight tube lamps are arranged in a line in a direction perpendicular to the length direction. Say the aspect.

  According to a second aspect of the present invention, in the luminaire according to the first aspect, the second lamp is arranged at a position where the end of the first lamp is close to the trunk. is there.

  According to a third aspect of the present invention, in the lighting apparatus according to the first or second aspect, a reflector that surrounds the first lamp and the second lamp from the back side is provided, and an auxiliary reflector is provided at a corner in the housing. It is characterized by.

  According to a fourth aspect of the present invention, in the luminaire according to any one of the first to third aspects, a brightness adjusting plate is provided on the front side of the first lamp and the second lamp.

  According to the first aspect of the present invention, the surplus space existing at the end in the longitudinal direction in the housing is effectively used, and the second lamp is disposed in the space in a posture orthogonal to the first lamp. The first lamp is provided at a position corresponding to the central portion of the first, and the second lamp is provided at a position corresponding to the end of the panel. As a result, the central portion of the panel is illuminated by the first lamp and the end portion of the panel is illuminated by the second lamp, so that a difference between the luminance at the central portion of the panel and the luminance at the end portion is less likely to occur. Therefore, it is possible to easily suppress luminance unevenness with a simple configuration in which the second lamp is arranged in a posture orthogonal to the first lamp in an excessive space in the housing without requiring a high level of technology as in the past. it can.

  In addition, since the second lamp has the same standard as the first lamp, the lamps used for the lighting fixture can be unified, so that the above effect can be obtained while keeping the cost low.

  According to invention of Claim 2, the trunk | drum of a 2nd lamp | ramp is located in the vicinity of the area | region where the edge part of a 1st lamp | ramp is located in a line in the orthogonal direction with the length direction of the said 1st lamp | ramp. . Here, the end portion of the first lamp is not a light emitting part, and a socket connected to the end portion is provided on the housing side, so that the region where the end portions of the first lamp are arranged is relatively dark. However, since the second lamp is arranged as described above, the area can be brightly illuminated by the second lamp. Thereby, luminance unevenness can be further suppressed.

  According to the invention of claim 3, since the light from the lamp is diffused by the reflection plate and can be directed to the panel, the luminance unevenness of the panel can be further suppressed. Further, by providing an auxiliary reflecting plate at the corner in the housing, the light traveling toward the corner in the housing where neither the first lamp nor the second lamp is arranged is reflected by the auxiliary reflecting plate. Therefore, it is possible to suppress the occurrence of dark portions at the corners of the panel. Thereby, the brightness unevenness of the panel can be further suppressed.

  According to the fourth aspect of the present invention, the amount of light directed directly from the lamp to the panel can be adjusted by the brightness adjusting plate, so that an excessively bright portion can be suppressed from being formed on the panel. Thereby, luminance unevenness can be further suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view schematically showing an overall configuration of a lighting fixture according to an embodiment of the present invention, and FIG. 2 is a front view showing an internal configuration of the lighting fixture shown in FIG. 3 is a cross-sectional view showing the internal configuration of the lighting fixture, and FIG. 4 is a perspective view showing the configuration of the auxiliary reflector. First, with reference to FIG. 1 and FIG. 2, the whole structure of the lighting fixture 100 by one Embodiment of this invention is demonstrated.

  The luminaire 100 according to the present embodiment is installed, for example, on a ceiling in a room and is for illuminating the room. As shown in FIG. 1, the lighting fixture 100 includes a substantially rectangular parallelepiped-shaped fixture body 1, and a straight tube lamp (first lamp) 2 and an auxiliary lamp (second lamp) 3 are provided on the fixture body 1. The reflectors 4 and 5, the brightness adjusting plate 6, and the auxiliary reflector 7 are provided internally.

  The straight tube lamp 2 is standardized to a predetermined length dimension (about 1200 mm as an example). In the present embodiment, four straight tube lamps 2 are accommodated in the instrument body 1 in a state of being arranged in parallel at a predetermined interval. In addition, as mentioned above, as shown in FIG. 2, the straight tube lamps 2 are aligned in the length direction, and the end portions of the straight tube lamps 2 are aligned in a direction perpendicular to the length direction. Say the state.

  As shown in FIG. 1, the instrument body 1 includes a housing 11 and a panel 12.

  The housing 11 is composed of, for example, an attachment surface 11a (see FIG. 3) attached to an indoor ceiling, and side surfaces 11b falling from the four sides of the attachment surface 11a, and is the illumination direction of the luminaire 100. It is formed in a shape having an opening 11c on the front side (lower side in FIG. 1).

  A plurality of sockets 13 are disposed at appropriate positions on the mounting surface 11 a of the housing 11. These sockets 13 are connected to the end portions of the lamps 2 and 3 in the length direction, and have a function of supporting the lamps 2 and 3 in the above arrangement and supplying power to the lamps 2 and 3. Have.

  The panel 12 is translucent and is attached to the opening 11 c of the housing 11.

  In this embodiment, the housing 11 is formed in a substantially square shape when viewed from the front, and has a length that is half the length of the standard length (about 1200 mm) of the straight tube lamp 2, that is, the straight tube lamp 2 is accommodated in the above arrangement. In this case, one side where an excess space S exists between both ends in the lengthwise direction of the straight tube lamp 2 and the pair of side surfaces 11b facing the both ends is formed in a size of about 1500 mm, for example. In addition, the panel 12 has a half length with respect to the standard length of the straight tube lamp 2 in accordance with the housing 11.

  In the present embodiment, the auxiliary lamps 3 are disposed in the surplus spaces in a posture extending in a direction substantially orthogonal to the extending direction of the straight tube lamp 2. The two auxiliary lamps 3 are lamps of the same standard as the straight tube lamp 2 and have a length dimension of about 1200 mm in this embodiment. In addition, the auxiliary lamp 3 is disposed so that one end of each of the four straight tube lamps 2 is close to the light emitting body 31.

  The reflection plate 4 is formed in a shape that surrounds each of the four straight tube lamps 2 from the back surface to the both side surfaces, and diffuses the diffused light from the straight tube lamp 2 on the panel 12. It is provided to make it go. The reflecting plate 4 includes four horizontal planes 41 disposed on the back side of each straight tube lamp 2 and eight inclined surfaces 42 disposed on both side surfaces of each straight tube lamp 2. The inclined surfaces 42 located at both ends are slightly larger in inclination than the other inclined surfaces 42. In addition, although illustration is abbreviate | omitted, the reflecting plate 4 is comprised by connecting a some reflective member.

  The reflection plate 5 is formed in a substantially L shape so as to surround each auxiliary lamp 3 from the back surface to the side surface, and diffuses the light from the auxiliary lamp 3 in the lengthwise direction of the panel 12 in a diffused state. It is provided so as to be directed to the vicinity of the end. The reflecting plate 5 includes a horizontal surface 51 disposed on the back side of the auxiliary lamp 3 and an inclined surface 52 disposed on the side surface side of the auxiliary lamp 3.

  The brightness adjusting plate 6 is provided on the front side of the four straight tube lamps 2 and the two auxiliary lamps 3 so as to cover the entire length of the lamps 2 and 3. The brightness adjusting plate 6 is provided to suppress the light from the lamps 2 and 3 from going directly to the panel 12. An example of such a brightness adjusting plate 6 is a punching metal having a large number of small holes. As described above, the reflectors 4 and 5 and the brightness adjusting plate 6 prevent the silhouettes of the lamps 2 and 3 from being clearly projected on the panel 12.

  The auxiliary reflector 7 is provided at each of the four corners 11 d of the housing 11. As shown in FIG. 4, each auxiliary reflector 7 is connected to an inclined surface 71 inclined to the attachment surface 11 a and two sides of the inclined surface 71, and is attached to the side surface 11 b of the housing 11. And two vertical surfaces 72. The inclined surface 71 is inclined at an angle at which the light of the lamps 2 and 3 traveling toward the corner 11d of the housing 11 can be efficiently reflected to the panel 12 side.

  In the luminaire 100 configured as described above, the auxiliary lamps 3 are respectively disposed in the excess spaces S at both ends in the length direction in the housing 11, and the auxiliary reflectors 7 are provided at the four corners 11 d in the housing 11. By providing each, the brightness of both end portions and the four corner portions in the length direction of the panel 12 is made substantially equal to the brightness of the central portion of the panel 12, thereby causing uneven brightness in the panel 12. It has become difficult.

  In the present embodiment, as described above, the surplus space S present at both ends in the length direction in the housing 11 is effectively used, and the auxiliary lamp 3 is placed in the space S in a posture orthogonal to the straight tube lamp 2. Thus, the straight tube lamp 2 is provided at a position corresponding to the center portion of the panel 12, and the auxiliary lamps 3 are provided at positions corresponding to the end portions of the panel 12. As a result, the central portion of the panel 12 is illuminated by the straight tube lamp 2 and the end portion of the panel 12 is illuminated by the auxiliary lamp 3, so that the difference between the luminance at the central portion of the panel 12 and the luminance at the end portion is unlikely to occur. Become. Therefore, without the need for advanced technology as in the past, the auxiliary lamp 3 is disposed in an excess space S in the housing 11 in a posture orthogonal to the straight tube lamp 2, and brightness unevenness can be easily achieved. Can be suppressed.

  In addition, since the auxiliary lamp 3 has the same standard as the straight tube lamp 2, the lamp used for the lighting apparatus 100 can be unified, so that the above effect can be obtained while keeping the cost low.

  Further, according to the lighting apparatus 100 of the present embodiment, the light emitting body of the auxiliary lamp 3 is disposed in the vicinity of the region where the end portions of the straight tube lamp 2 are arranged in a line in a direction orthogonal to the length direction of the straight tube lamp 2. The part 31 will be located. Here, the end portion of the straight tube lamp 2 is not a light emitting part, and the socket 13 connected to the end portion is provided on the housing 11 side. Although the auxiliary lamp 3 is arranged as described above, the area can be brightly illuminated by the auxiliary lamp 3. Thereby, luminance unevenness can be further suppressed.

  Moreover, according to the lighting fixture 100 of the present embodiment, the light of the lamps 2 and 3 can be directed to the panel 12 in a state of being diffusely reflected and diffused by the reflectors 4 and 5, so that the luminance unevenness of the panel 12 is reduced. It can be further suppressed.

  Further, by providing the auxiliary reflector 7 at the corner 11d in the housing 11, the light traveling toward the corner 11d in the housing 11 where neither the straight tube lamp 2 nor the auxiliary lamp 3 is arranged is auxiliary reflected. Since the light can be reflected by the plate 7 and directed toward the panel 12, it is possible to suppress the occurrence of a dark portion at the corner of the panel 12. Thereby, luminance unevenness of the panel 12 can be further suppressed.

  Moreover, according to the lighting fixture 100 of this embodiment, since the quantity which directly goes to the panel 12 from the lamps 2 and 3 can be adjusted with the brightness adjusting plate 6, an excessively bright part is formed in the panel 12. Can be suppressed. Thereby, luminance unevenness can be further suppressed.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  For example, in the above embodiment, the four straight tube lamps 2 are accommodated in the housing 11 in a state of being arranged in parallel, and further, the auxiliary space 2 extends in a direction orthogonal to the straight tube lamp 2 in the surplus space S at both ends in the housing 11. Although an example in which each of the lamps 3 is provided is shown, the present invention is not limited to this, and as in Modification 1 shown in FIG. 5, a total of eight straight tube lamps 2 are arranged in four rows in parallel and two rows in series. The lighting fixture 200 may be configured to be housed in the housing 211 in a state and further provided with one auxiliary lamp 3 in each of the surplus spaces at both ends in the housing 211.

  Further, as in Modification 2 shown in FIG. 6, the straight tube lamps 2 are accommodated in the housing 311 in a state in which a total of eight straight lamps 2 are arranged in four rows and two rows in series. The lighting fixture 300 may be configured by providing two auxiliary lamps 3 in parallel in the extra space. This configuration is suitably employed when the length of the housing 311 is considerably longer than the standard length of the straight tube lamp 3 and the surplus space is wide. Of course, the number of auxiliary lamps 3 can be appropriately changed in accordance with the length of the housing (the width of the surplus space), and the number of straight tube lamps 2 arranged in parallel and in series is not limited to the above.

  Moreover, in each modification shown in FIGS. 5 and 6, an auxiliary lamp may be arranged between the straight tube lamps 2 arranged in series so as to be orthogonal to the straight tube lamp 2. In this way, the relatively dark series straight tube lamps 2 can be brightly illuminated with the auxiliary lamps, so that the luminance unevenness can be further suppressed.

  As an application example of the second modification (see FIG. 7), the end portions of the lamps 2 (3) are arranged so as to overlap each other in order to eliminate the dark part between the two lamps 2 (3) arranged in series. A luminaire 400 is also possible.

It is the disassembled perspective view which showed roughly the whole structure of the lighting fixture by one Embodiment of this invention. It is the front view which showed the internal structure of the lighting fixture shown in FIG. It is sectional drawing which showed the internal structure of the lighting fixture. It is the perspective view which showed the structure of the auxiliary reflector. It is a schematic plan view for demonstrating the lamp arrangement | positioning of the lighting fixture by the modification 1 of this invention. It is a schematic plan view for demonstrating the lamp arrangement | positioning of the lighting fixture by the modification 2 of this invention. 12 is a schematic plan view for explaining a lamp arrangement of a lighting fixture according to an application example of Modification 2. FIG.

Explanation of symbols

1 Instrument body 2 Straight tube lamp (1st lamp)
3 Auxiliary lamp (second lamp)
4, 5 Reflector 6 Brightness adjusting plate 7 Auxiliary reflector 11, 211, 311 Housing 11b Side surface 11c Opening 12 Panel 31 Light emitting body (body)
100, 200, 300 Lighting equipment S space

Claims (4)

A lighting fixture comprising a plurality of straight tubular first lamps standardized to a predetermined length dimension, and a substantially rectangular parallelepiped-shaped main body that accommodates the first lamps in a state of being arranged in parallel at least. ,
The appliance main body includes a housing that supports the plurality of first lamps and has an opening on a front side that is an illumination direction of the first lamp, and a translucent panel provided in the opening of the housing,
The housing is formed in a size such that a predetermined space exists between an end portion of the first lamp in a length direction and a side surface of the housing facing the end portion,
The lighting apparatus according to claim 1, wherein a straight tubular second lamp having the same standard as the first lamp extending in a direction substantially orthogonal to the extending direction of the first lamp is disposed in the space.   The lighting apparatus according to claim 1, wherein the second lamp is disposed at a position such that an end portion of the first lamp is close to a body portion of the second lamp. While providing a reflector that surrounds the first lamp and the second lamp from the back side,
The lighting apparatus according to claim 1, wherein an auxiliary reflector is provided at a corner in the housing.   The luminaire according to any one of claims 1 to 3, wherein a brightness adjusting plate is provided on a front side of the first lamp and the second lamp.

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