JP2011090989A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture capable of easily determining sockets for mounting a lamp, when the lamps are to be arranged in even number and in odd number, and suitably maintaining light distribution characteristics for either case. <P>SOLUTION: The lighting fixture includes a lamp 4, having a straight tube-like light-emitting tube 41 and a base 42 arranged on one end of the light-emitting tube 41; a plurality of sockets, wherein the base 42 of the lamp 4 is detachably mounted and a plurality of the lamps 4 are arranged in parallel with one another; a stabilizer 8 for controlling lighting-up of the lamp 4 via the socket; and a hollow box-shaped fixture body 1 for storing at least the plurality of lamps 4 and the plurality of sockets. The plurality of sockets are provided with an even number of first sockets 2 used, when an even number of lamps 4 are arranged on an inner wall at one end side of the fixture body 1, and an odd number of second sockets 3, when an odd number of lamps 4 are arranged on an inner wall on the other-end side of the fixture body 1, facing the inner wall on one-end side of the fixture body. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting fixture.

  Conventionally, a rectangular box-shaped instrument body with one open surface, so-called straight tube type fluorescent lamps each provided with a base at each end and arranged in parallel in the instrument body, and inner walls facing each other in the instrument body A plurality of socket pairs that are provided to face each other, one connected to the base on one side of the fluorescent lamp and the other connected to the base on the other side of the fluorescent lamp, and stable control of lighting the fluorescent lamp through the socket There has been provided a lighting fixture including a fixture (see, for example, Patent Document 1).

  The plurality of socket pairs are arranged at substantially equal intervals, and appropriate light distribution characteristics can be obtained by connecting a fluorescent lamp to each socket pair.

JP-A-9-92025

  However, in the lighting fixture in the conventional example, when the user wants to change the number of fluorescent lamps used from an even number to an odd number, or when the user wants to change the number of fluorescent lamps to be used from an odd number to an even number, It could not be determined whether the socket pair should be used, and there was a possibility that an appropriate light distribution characteristic could not be obtained due to erroneous mounting of the fluorescent lamp.

  For example, when the lighting fixture has three socket pairs and one fluorescent lamp is removed from among the fluorescent lamps connected to each socket pair, the lighting fixture is arranged in the middle of the three parallel fluorescent lamps. It is possible to maintain proper light distribution characteristics by removing the fluorescent lamp.

  However, if one of the three fluorescent lamps arranged in parallel is removed, the light distribution is biased toward the other fluorescent lamp, and the proper light distribution characteristics are obtained. It can no longer be obtained.

  On the other hand, when the lighting fixture has three socket pairs and two fluorescent lamps are removed from the fluorescent lamps connected to each socket pair, each of the three arranged fluorescent lamps is disposed at both ends. The proper light distribution characteristic can be maintained by removing the fluorescent lamp.

  However, if one of the three fluorescent lamps arranged side by side and the fluorescent lamp in the middle of each are removed, the light distribution will be biased toward the other fluorescent lamp. Light distribution characteristics cannot be obtained.

  The present invention has been made in view of the above reasons, and its purpose is to make it easy for a user to install a socket in which a lamp is to be mounted, when an even number of lamps are provided and when an odd number of lamps are provided. Therefore, it is possible to provide a lighting apparatus that can maintain a proper light distribution characteristic in any case.

  The invention of claim 1 is a straight tubular arc tube, a lamp having a cap provided at one end of the arc tube, and a plurality of sockets in which the lamp cap is detachably mounted and a plurality of lamps are arranged in parallel to each other. A ballast for controlling the lighting of the lamp through the socket, and a hollow box-type instrument body that houses at least the plurality of lamps and the plurality of sockets, and the plurality of sockets are provided when an even number of lamps are disposed. An even number of first sockets provided on one end inner wall of the instrument main body and an other end inner wall facing the one end inner wall of the instrument main body used when an odd number of lamps are provided. And an odd number of second sockets.

  According to the present invention, in the lighting fixture, the user can easily determine the socket in which the lamp is to be mounted depending on whether the even number of lamps are arranged or the odd number of lamps. The light distribution characteristic can be kept appropriate in both cases where an even number of lamps are arranged and an odd number of lamps are arranged.

  As described above, according to the present invention, the user can easily determine the socket in which the lamp is to be mounted, depending on whether the lamp is provided with an even number of lamps or an odd number of lamps. Therefore, there is an effect that the light distribution characteristic can be appropriately maintained in both cases where an even number of lamps are arranged and an odd number of lamps are arranged.

The bottom view of the lighting fixture in Embodiment 1 of this invention is shown. Sectional drawing of the lighting fixture in the same as the above is shown. The wiring diagram of the lighting fixture in the same as the above is shown. (A)-(c) shows the state which changed the number of lamps of the lamp | ramp of a lighting fixture in the same as the above, (a) is a bottom view, (b) is AA sectional drawing, (c) is BB sectional drawing. The figure is shown. The schematic of the lighting fixture in the same as the above is shown. (A)-(c) shows the lighting fixture in Embodiment 2 of this invention, (a) is a bottom view, (b) is AA sectional drawing, (c) shows BB sectional drawing. (a)-(c) shows the state which changed the number of lamps of the lamp of the lighting fixture in the same as the above, (a) is a bottom view, (b) is AA sectional drawing, (c) is BB sectional drawing. Indicates. The schematic of the lighting fixture in the same as the above is shown. The schematic of the lighting fixture in the same as the above is shown.

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

(Embodiment 1)
As shown in FIGS. 1 and 2, the lighting fixture in the present embodiment includes a substantially rectangular box-shaped fixture body 1 having an open bottom surface, a first socket 2 provided on an inner wall at one end in the longitudinal direction of the fixture body 1, and a fixture. A second socket 3 provided on the inner wall on the other end of the main body 1, a lamp 4 connected to the first socket 2 or the second socket 3, a support member 5 that supports the lamp 4, and the light of the lamp 4 , A louver 7 that distributes the light of the lamp 4 in a predetermined direction, a ballast 8 that controls the lighting of the lamp 4 via the first socket 2 or the second socket 3, and A power terminal block 9 to which a power line not connected is connected, and a dimming terminal block 11 to which a signal line (not shown) is connected. In the present embodiment, two second sockets 3 are provided, one of which is referred to as a second socket 3A and the other of which is referred to as a second socket 3B, so that the second sockets 3A and 3B are distinguished. If not, it is referred to as a second socket 3. Hereinafter, description will be made with reference to the vertical direction in FIG.

  In the instrument body 1, a base 12 having a substantially U-shaped cross section along the longitudinal direction is fixed to the approximate center of the inner wall of the upper surface by welding or the like, and the reflector 6 is attached to the base 12. Further, ballasts 8 are respectively disposed between both lateral sides of the base 12 and the inner wall of the instrument body 1. A power supply terminal block 9 and a dimming terminal block 11 are disposed on one end side in the longitudinal direction of one of the two ballasts 8.

  The power supply terminal block 9 is connected to an external power supply or the like via a power line (not shown), and supplies power to the two ballasts 8 via the power line 13 as shown in FIG.

  The dimming terminal block 11 is connected to a dimming control unit or the like via a signal line (not shown), for example, and outputs a dimming signal output from the sensor to the ballast 8 via the signal line 14.

  Of the two ballasts 8, one ballast 8A is connected to the first socket 2 and the second socket 3A via the power line 15, and the other ballast 8B is connected to the second socket 3B and the power line. 16 is connected.

  The ballasts 8A and 8B perform lighting control of the lamp 4 by supplying desired lighting power to the lamp 4 based on the dimming signal.

  The reflector 6 includes a base 61 having a substantially rectangular flat plate shape and extending portions 62 that extend obliquely downward from both ends in the short direction of the base 61. A screw 63 inserted through the hole is attached to the base 12 by being screwed into a screw hole (not shown) formed in the base 12.

  The louvers 7 are formed in a substantially rectangular flat plate shape, and a plurality of louvers 7 are provided in the opening of the instrument body 1 and are arranged in parallel along the longitudinal direction of the instrument body 1.

  The first socket 2 is provided approximately at the center in the short-side direction of the inner wall on the one end side of the instrument main body 1.

  The second sockets 3A and 3B are provided on the inner wall on the other end side of the instrument main body 1, the second socket 3A is provided on one side of the instrument main body 1 in the lateral direction, and the second socket 3B is provided. The instrument main body 1 is provided on the other side from the approximate center in the short direction. Therefore, the first socket 2 and the second socket 3 are alternately arranged in the lateral direction of the instrument body 1 and do not face each other. Here, the distances from the approximate center in the short direction of the instrument body 1 to the two second sockets 3A and 3B are substantially equal.

  The lamp 4 is a so-called compact fluorescent lamp defined in JIS C7601, and includes a luminous tube 41 formed in a substantially U shape and a base 42 provided on the open end side of the luminous tube 41. That is, the lamp 4 has a base 42 only at one end side in the longitudinal direction, and the base 42 is connected to the first socket 2 or the second sockets 3A and 3B, and is parallel in the instrument main body 1. Arranged.

  The support member 5 includes a base 51 having a substantially U-shaped cross section and a pair of substantially semicircular holding portions 52 each having a spring force extending from the tip of the open end of the base 51. . When the arc tube 41 of the lamp 4 is sandwiched, the pair of sandwiching portions 52 are deformed so as to spread outward, and the arc tube 41 is sandwiched between the pair of sandwiching portions 52. Here, the support member 5 </ b> A that supports the lamp 4 connected to the first socket 2 is provided closer to the second socket 3 than the substantially center in the longitudinal direction of the instrument body 1, and is connected to the second socket 3. The support member 5B that supports the lamp 4 is provided closer to the first socket 2 than the approximate center of the instrument body 1 in the longitudinal direction.

  The support member 5A holds the vicinity of the tip of the arc tube 41 in the lamp 4 connected to the first socket 2, and the support member 5B is the tip of the arc tube 41 in the lamp 4 connected to the second socket 3. Hold the neighborhood. Here, when the lamp 4 is connected to the first socket 2, the arc tube 41 of the lamp 4 interferes with the holding portion 52 of the support member 5B. Therefore, the holding portion 52 of the support member 5B cannot be deformed outward, and the lamp 4 cannot be held by the support member 5B.

  Similarly, when the lamp 4 is connected to the second socket 3 as shown in FIG. 4, the arc tube 41 of the lamp 4 interferes with the holding portion 52 of the support member 5A as shown in FIG. . Therefore, the holding portion 52 of the support member 5A cannot be deformed outward, and the lamp 4 cannot be held by the support member 5A. That is, the lamp 4 can be attached only to one of the first socket 2 and the second socket 3.

  And in the lighting fixture of this embodiment, 1 lamp | ramp 4 can be lighted by using the 1st socket 2, and 2 lamp | ramp 4 can be turned on by using the 2nd socket 3 (even number). Light) can be turned on.

  In addition, since the first socket 2 is disposed at approximately the center of the instrument body 1 in the short direction, the lamp 4 connected to the first socket 2 passes through the center of the instrument body 1 in the short direction. Light distribution that is substantially line symmetric with respect to the center line L can be performed.

  On the other hand, since the two second sockets 3 are disposed at substantially equal distances from the center of the instrument body 1 in the short direction, the lamps 4 respectively connected to the second sockets 3 as a whole. Light distribution that is substantially line symmetric with respect to the center line L passing through the center in the lateral direction of the instrument body 1 can be performed.

  Therefore, in either case where one lamp 4 is arranged or two lamps 4 are arranged, the socket to be used by the user can be easily determined, and the light distribution characteristic is appropriately set. Can keep. In this embodiment, one first socket 2 is provided and two second sockets 3 are provided. However, the number of sockets is not limited to this, and an odd number of first sockets 2 are provided. Thus, an even number of second sockets 3 may be provided.

  Further, as described above, since the first socket 2 and the second socket 3 cannot be used at the same time, erroneous mounting of the lamp 4 can be further prevented.

(Embodiment 2)
The difference between the luminaire of this embodiment and the luminaire of the first embodiment is that the support members 5A and 5B are juxtaposed along the direction in which the lamps 4 are juxtaposed, and the first socket 2 has a lamp. When the lamp 4 is connected to the point where the tip of the arc tube 41 of the lamp 4 overlaps with the second socket 3 in the short direction of the instrument body 1 when the lamp 4 is connected, and to the second socket 3 The tip of the arc tube 41 in the lamp 4 overlaps the first socket 2 in the lateral direction of the instrument body 1. In addition, about another structure, the code | symbol common to Embodiment 1 is attached | subjected, and description is abbreviate | omitted.

  In the present embodiment, as shown in FIG. 6, the interval between the two second sockets 3 is set such that the tip of the arc tube 41 in the lamp 4 can be inserted between the two sockets 3. The length of the arc tube 41 is set so that the tip of the arc tube 41 of the lamp 4 connected to 2 is positioned between the two second sockets 3. That is, the distal end portion of the arc tube 41 and the second socket 3 overlap in the short direction of the instrument body 1.

  Therefore, when the lamp 4 is connected to the first socket 2 and turned on, it is possible to prevent the shadow of the second socket 3 from being generated in a part of the irradiation range. That is, it is possible to prevent a part of the irradiation range of the lamp 4 from becoming dark.

  Similarly, as shown in FIG. 8, when the lamp 4 is connected to the second socket 3, the tip of the arc tube 41 of the lamp 4 connected to the second socket 3 is short of the instrument body 1. It overlaps with the first socket 2 in the hand direction.

  Therefore, it is possible to prevent the shadow of the first socket 2 from being generated in a part of the irradiation range of the lamp 4. That is, it is possible to prevent a part of the irradiation range from becoming dark.

  In the present embodiment, the support members 5A and 5B are arranged in the order of the support members 5B, 5A and 5B along the direction in which the lamps 4 are arranged, and as shown in FIG. When the arc tube 41 of the lamp 4 is connected to the socket 2 and is held by the support member 5A, the holding part 51 of the support member 5A spreads outward and interferes with the holding part 51 of the support member 5B. . Therefore, while the lamp 4 is attached to the support member 5A, the holding portion 51 of the support member 5B cannot be opened outward, so that the lamp 4 cannot be held by the support member 5B. That is, the lamp 4 cannot be connected to the second socket 3.

  Similarly, when the lamp 4 is connected to the second socket 3 and the arc tube 41 of the lamp 4 is sandwiched by the support member 5B, the sandwiching portion 51 of the support member 5B is outside as shown in FIG. It spreads in the direction and interferes with the holding portion 51 of the support member 5A. Therefore, while the lamp 4 is attached to the support member 5B, the holding portion 51 of the support member 5A cannot be opened outward, and thus the lamp 4 cannot be held by the support member 5A. That is, the lamp 4 cannot be connected to the first socket 2.

  Therefore, also in the lighting fixture of this embodiment, the 1st socket 2 and the 2nd socket 3 cannot be used simultaneously, and the incorrect mounting | wearing of the lamp | ramp 4 can be prevented.

DESCRIPTION OF SYMBOLS 1 Apparatus body 2 1st socket 3 2nd socket 4 Lamp 5 Support member 6 Reflector 7 Louver 8 Ballast 9 Power supply terminal block 11 Dimming terminal block 12 Base 13 Power line 14 Signal line 15 Power line 16 Power line 41 Light emitting tube 42 Base

Claims (1)

A straight tubular arc tube, and a lamp having a base provided at one end of the arc tube;
A plurality of sockets in which a lamp base is detachably mounted and a plurality of lamps are arranged in parallel with each other;
A ballast for controlling the lighting of the lamp through a socket;
A hollow box-type instrument body that houses at least a plurality of lamps and a plurality of sockets,
The plurality of sockets are used when an even number of lamps are arranged, and an even number of first sockets provided on the inner wall on the one end side of the instrument body and an instrument used when an odd number of lamps are arranged. A lighting fixture comprising: an odd number of second sockets provided on an inner wall on the other end side opposite to an inner wall on one end side of the main body.

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