JP2006221939A - lighting equipment - Google Patents

Abstract

The lighting effect of a lighting fixture using a substantially square annular fluorescent lamp is improved.
A substantially square annular fluorescent lamp having a straight tube portion and a square tube portion is used. The lighting fixture 1 includes a reflector 42 that covers the lower side of the fixture body 41. The arc tube 21 of the fluorescent lamp 10 optically opposes the substantially octagonal reflecting surface 63 of the reflector 42. The straight tube portion 22 of the arc tube 21 is optically opposed to the main reflection surface portion 64 of the reflector 42, and the square tube portion 23 of the arc tube 21 is opposed to the angular reflection surface portion 65 of the reflector 42. The light irradiated by the straight tube portion 22 of the arc tube 21 is reflected by the main reflecting surface portion 64 and travels in all directions. The light irradiated by the square tube portion 23 of the arc tube 21 is reflected by the angle reflection surface portion 65 and travels toward the four corners. The distance between the straight tube portion 22 and the main reflection surface portion 64 is set to be larger than the distance between the square tube portion 23 and the angle reflection surface portion 65.
[Selection] Figure 1

Description

  The present invention relates to a luminaire using a fluorescent lamp having a square arc tube, for example.

Conventionally, a lighting fixture using an annular fluorescent lamp has been used. In such a lighting apparatus, even when a fluorescent lamp having a small arc tube diameter and a large light output per unit area is used, the lamp image is made difficult to appear on the shade, and the disk-shaped apparatus There has been known a lighting fixture in which a main body and a reflector are combined to form a substantially conical reflecting surface (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-74414 (page 1-6, FIGS. 1 and 10)

  Today, fluorescent lamps with a square annular arc tube are used to realize a new image fixture design and enhance the lighting effect of a flat square room. However, if a fluorescent lamp equipped with a quadrangular annular arc tube is used with a fixture body or reflector that constitutes a quadrangular pyramid-shaped reflecting surface, the ridges of the reflecting surface are close to the corners of the four corners of the fluorescent lamp. There is a problem that the irradiation of light toward the four corners of the arc tube becomes relatively small.

  This invention is made | formed in view of such a point, and it aims at providing the lighting fixture suitable for using the fluorescent lamp provided with the circular arc_tube | light_emitting_tube which has a corner | angular part.

  The lighting fixture according to claim 1 is a substantially polygonal annular fluorescent lamp having a plurality of straight tube portions and a square tube portion that connects the straight tube portions in a direction intersecting each other; An instrument main body having a reflection surface portion in which the main reflection surface portion and the main reflection plate portion facing each other are connected to each other, and the square tube portion and the angle reflection surface portion facing the reflection surface are provided.

  The fluorescent lamp has, for example, a substantially rectangular ring shape in which four straight tube portions are connected by square tube portions at four corners. Further, the reflection surface portion is configured in a substantially pyramid shape such as a substantially octagonal pyramid shape, for example, by disposing the main reflection plate portion in a substantially quadrangular pyramid shape and providing the angle reflection surface portion between the main reflection plate portions. The Moreover, the instrument main body part provided with the reflective surface part may be formed integrally, or a part may be formed separately. For example, the instrument main body and the reflector covering the instrument main body may be formed integrally, or may be formed separately. Further, the reflective surface portion may be formed as an integral reflector, or the reflective surface portion may be formed by combining a plurality of members.

  And in this structure, about a substantially polygonal annular fluorescent lamp, the apparatus main body part provided with the reflective surface part which provided the main reflective surface part which a straight tube | pipe part and a reflective surface oppose is used, Furthermore, a fluorescent lamp is used for a reflective surface part. Since the angular reflection surface portion in which the square tube portion and the reflection surface face each other is provided, the reflected light is efficiently irradiated over the entire range in the outer peripheral direction.

  The lighting fixture according to claim 2 is the lighting fixture according to claim 1, wherein the distance between the square tube portion and the angular reflection surface portion is set larger than the distance between the straight tube portion and the main reflection surface portion.

  In this configuration, light is reflected without being biased with respect to the direction of the square tube portion, and the temperature rise of the square tube portion of the fluorescent lamp is suppressed.

  According to the luminaire of claim 1, for the substantially polygonal annular fluorescent lamp, the fixture main body portion provided with the reflecting surface portion provided with the main reflecting surface portion facing the straight tube portion and the reflecting surface is used, and further the reflecting surface portion Since the angular reflection surface portion is provided so that the square tube portion and the reflection surface of the fluorescent lamp face each other, the reflected light can be efficiently irradiated over the entire range in the outer peripheral direction.

  According to the lighting fixture of Claim 2, in addition to the effect of Claim 1, light is reflected without being biased in the direction of the square tube portion, and the temperature rise of the square tube portion of the fluorescent lamp is suppressed.

  Hereinafter, an embodiment of a lighting fixture of the present invention will be described with reference to the drawings.

  FIG. 1 is an exploded perspective view of the luminaire, and FIG. 2 is a side view in which a part of the luminaire is cut out. FIG. 3 is a perspective view of the same lighting fixture. FIG. 4 is a bottom view of a part of the same lighting fixture. FIG. 5 is a side view of a partially exploded state of the same lighting fixture. FIGS. 6A and 6B are explanatory views of the same lighting fixture, in which FIG. 6A shows a portion where the square tube portion and the angular reflection surface portion face each other, and FIG. 6B shows a portion where the straight tube portion and the main reflection surface portion face each other. FIG. 7 is a bottom view showing another embodiment of the chassis of the lighting fixture of the present invention. FIG. 8 is a bottom view showing still another embodiment of the chassis of the lighting fixture of the present invention. FIG. 9 is an exploded side view showing an example using the chassis. FIG. 10 is a bottom view showing an example using the chassis.

  1 to 3, reference numeral 1 denotes a lighting fixture. The lighting fixture 1 is a direct-mounted lighting fixture 1 for a house, and is directly attached to a fixture mounting surface such as a ceiling surface using a hooking ceiling 3 such as a square. Installed. The hook ceiling 3 is a so-called square hook ceiling 3, and a pair of arc-shaped connection holes 3 b are formed on the lower surface of the box-shaped case 3 a, and the connection connected to the power supply line inside each of the connection holes 3 b. A metal fitting is provided.

  The lighting apparatus 1 is equipped with two fluorescent lamps 10 each having a substantially square annular shape, which is a substantially square shape. The adapter 11, the instrument body 12, the frame 14, the shade adapter 15, the shade 16, and the like It has.

  The fluorescent lamp 10 has a so-called square-shaped arc tube 21 that constitutes a substantially square annular discharge path, that is, the arc tube 21 is a straight straight tube having four sides. And a rectangular tube portion 23 that connects the straight tube portions 22 with a small-radius arc shape by bending 90 degrees. Further, a base part 25 having a plurality of base pins protruding from each other is provided at the central part in the longitudinal direction of the straight pipe part 22 on one side. The fluorescent lamp 10 is a high-efficiency type, for example, with a tube diameter of 16 mm and dedicated for high-frequency lighting. If two fluorescent lamps 10 with rated lamp power of 40 W and 50 W are aligned in the direction of the straight tube section 22, they are concentric. It is supposed to be arranged in.

  The adapter 11 has a disk-shaped adapter main body 31, and a pair of hook metal fittings 33 having a substantially L-shaped cross-section project from the upper surface of the adapter main body 31. 3 is inserted into the connection hole 3b and rotated by a predetermined angle so that the hook metal 33 is electrically connected to the connection metal in the hook ceiling 3 while the upper surface of the adapter body 31 is in contact with the lower surface of the hook ceiling 3. And mechanically connected. Further, a hooking ceiling lock release button 34 is provided on the peripheral surface of the adapter main body 31 to enable the hook metal fitting 33 to be rotated in the direction of removal from the hooking ceiling 3. Further, at two symmetrical positions on the peripheral surface of the adapter main body 31, engaging portions 35 are provided so as to be able to advance and retreat, which are inclined surfaces whose upper surfaces are horizontal and whose lower surfaces are inclined. These engaging portions 35 are urged in the protruding direction by urging means (not shown) disposed inside the adapter main body 31. In addition, a release button 36 is provided on the lower surface of the adapter main body 31 to retreat the engaging portions 35 to the inside of the adapter main body 31. Further, from the adapter main body 31, electric wires 38 electrically connected to the respective hooks 33 are led out, and a connection connector 39 is provided at the distal end portion of the electric wires 38.

  The instrument main body 12 includes an instrument main body 41 and a reflector 42 attached to cover the lower side of the instrument main body 41. The instrument body 41 includes a metal chassis 44 having good heat dissipation such as aluminum, and a circular mounting hole 46 is formed at the center of the chassis 44. In addition, a lighting device 48 provided with an inverter device or the like and covered with a reflector 42 is attached to the appliance main body 41, and a main body side power connector (not shown) connected to the connection connector 39 of the adapter 11 from the lighting device 48 is provided. Has been derived. Furthermore, a lamp socket 51, a socket 53 to which a light bulb 52 serving as a nightlight is mounted, a remote control light receiving device 55 including a light receiving portion 54, and the like are attached to the appliance main body 41, and each is connected to a lighting device 48. .

  The reflector 42 is, for example, a planar square reflector formed by pressing a metal plate, and at least the bottom side, which is the front side, is painted white. The reflector 42 is provided with a flat plate-like substrate portion 61 at a substantially central portion, and a circular hole or other work hole 62 is formed at the central portion of the substrate portion 61. An inclined reflecting surface portion 63 is formed continuously. The substrate 61 has an octagonal shape in which square corners, that is, corners are cut off and connected by an inclined line shorter than each side, and the reflective surface 63 extends from each side of the substrate 61 upward outward. A flat main reflection surface portion 64 inclined in an open shape and extending in all directions, and the main reflection surface portions 64 are connected to each other and inclined in an open shape outward and extended in the directions of the four corners. It is formed in a substantially octagonal pyramid shape having a planar angular reflection surface portion 65. That is, the corner reflection surface portion 65 is formed so as to cut a ridge line portion between the main reflection surface portions 64. Further, a horizontal substantially octagonal frame-like frame surface portion 66 is formed surrounding the outer periphery of the reflection surface portion 63, and an inclined outer reflection surface portion 67 is formed surrounding the outer periphery of the frame surface portion 66. The outer reflection surface portion 67 includes an outer main reflection surface portion 68 positioned on the extension of the main reflection surface portion 64 and an outer angle reflection surface portion 69 positioned on the extension of the angle reflection surface portion 65. Further, each outer angle reflection surface portion 69 is converged toward the corner portion of the reflector 42 to form a triangular shape. The board portion 61 of the reflector 42 is provided with a through hole through which the nightlight socket 53 and the remote control light receiving device 55 are inserted, and is provided with a shade attachment mounting portion 72 such as a screw hole. The mounting hole 46 of the chassis 44 can be formed large, and the socket 53 and the remote control light receiving device 55 can be arranged inside the mounting hole 46. In addition, the reflection surface portion 63 or the frame surface portion 66 of the reflector 42 is provided with a through hole through which the lamp socket 51 is inserted, and is formed on a side opposite to the lamp socket 51 by a leaf spring or the like. A lamp holder 74 is attached.

  The frame body 14 includes a frame main body portion 76 having a rectangular frame shape, and a plurality of, for example, four frame body attachment bodies 77 attached to the frame main body portion 76. The frame main body 76 is a decorative frame that improves decorativeness, and is formed of natural wood or resin. The frame attachment body 77 is formed of a metal plate or the like, and one end is attached to the frame main body 76 using a screw or the like, and the other end is attached to the instrument main body 12 using a screw or the like. The frame main body 76 is attached to the frame surface portion 66 and the like of the reflector 42, and is positioned below the reflector 42. Further, the frame main body 76 is formed such that the dimension to the outer edge is larger than that of the reflector 42, and the dimension to the inner edge is smaller than that of the reflector 42. The portion 76 covers the lower part of the outer reflection surface portion 67 of the reflector 42.

  The shade adapter 15 includes a shade adapter main body 81 and an attachment leg 82 attached to the upper surface of the shade adapter main body 81. The shade adapter main body 81 has a substantially prismatic shape, and from both side surfaces, a shade engaging portion 84 is formed so as to be able to advance and retreat. . These shade engaging portions 84 are urged in the protruding direction by an urging means (not shown) disposed inside the shade adapter main body 81. A shade removal button 85 is provided on the lower surface of the shade adapter main body 81 to retreat the shade engaging portion 84 to the inside of the shade adapter main body 81. Further, the mounting legs 82 are formed of a metal plate or the like and are formed to extend from the shade adapter main body 81 to both ends, and fixture fixing portions 86 are respectively formed in the vicinity of both ends in the longitudinal direction. The fixture attaching portion 86 is detachably attached to the instrument body 12 side using a shade attachment 87 that is a screw. That is, these fixture attaching portions 86 are formed in a rotationally symmetrical manner, and have a circular arc-shaped groove portion and a large-diameter portion formed at one end portion of the groove portion. The shade attachment 87 is a screw provided with a knob portion, and is held in advance by being gently screwed into the shade attachment attachment portion 72 of the reflector 42 in advance. Therefore, after inserting the shade attachment 87 through the large diameter portion of the fixture attachment portion 86, the shade adapter 15 is rotated, and the shade attachment 87 is locked from the state where the shade attachment 87 is locked in the groove. By tightening, the shade adapter 15 is fixed to the reflector 42.

  The shade 16 includes a shade main body portion 91 having translucency and a shade attachment receiving portion 92 provided at a central portion of the shade main body portion 91. The shade body 91 is formed in a planar rectangular shape using a resin such as translucent milky white acrylic, and an appropriate design is applied as necessary. Further, the planar shape of the shade main body 91 is larger than the dimension up to the inner edge of the frame main body 76 of the frame body 14 and smaller than the dimension up to the outer edge of the frame main body 76. The frame body 76 is exposed on the outer periphery of the shade 16 to improve the appearance. The shade attachment receiving portion 92 is a makeup that covers the shade attachment receiving portion main body 94 and the shade attachment receiving portion main body 94 so that the shade attachment receiving portion main body 94 can be opened and closed horizontally. And a lid 95. Then, in a state where the shade attachment receiving portion 92 is engaged with and attached to the shade adapter 15, the shade main body portion 91 is separated below the frame main body portion 76 to cover the instrument main body portion 12 and the like. .

  The lighting fixture 1 is attached to the fixture mounting surface by inserting the hook metal fitting 33 into the connection hole 3b of the hook ceiling 3 and rotating it by a predetermined angle to electrically connect the adapter 11 to the hook ceiling 3. Connected and mechanically attached.

  Next, the adapter main body 12 in which the fluorescent lamp 10 is mounted in advance is attached to the adapter 11 by combining the reflector 42 and the frame body 14 with the instrument main body 41. That is, when the adapter main body 31 is aligned with the mounting hole 46 of the instrument main body 41 and the instrument main body part 12 is pushed up, the engaging portion 35 is engaged around the attachment hole 46 and mechanically attached. Then, by connecting the main body side power connector to the connection connector 39 of the adapter 11, the lighting device 48 is connected to the power line via the adapter 11 and the hooking ceiling 3, and power is supplied. In addition, each fluorescent lamp 10 is held in the instrument main body 12 by mounting the base portion 25 to the lamp socket 51 and engaging and holding the arc tube 21 located on the opposite side of the base portion 25 by the lamp holder 74. .

  Next, the shade adapter 15 is attached to the reflector 42 using the shade attachment 87. From this state, with the makeup lid 95 open, when the shade attachment receiving portion 92 is aligned with the shade adapter main body 81 and the shade 16 is pushed up, the shade engaging portion 84 engages with the shade attachment receiving portion 92. The shade 16 is mechanically held by the shade adapter 15. Here, by closing the decorative lid 95, the mounting operation to the fixture mounting surface at the position of the lighting fixture is completed.

  Further, when replacing the fluorescent lamp 10, etc., the makeup lid 95 is opened and the shade removal button 85 of the shade adapter 15 is pushed to engage the shade engaging portion 84 and the shade attachment receiving portion 92. Is released and the shade 16 can be removed. Furthermore, when removing the lighting fixture 1 from the fixture mounting surface, the shade fixture 87 is loosened and the shade adapter 15 is rotated, the shade adapter 15 is removed from the reflector 42, and the connection connector 39 of the adapter 11 and the main body side power connector are removed. When the release button 36 is pushed in a state in which is removed, the engagement between the engaging portion 35 and the instrument main body 41 can be released, and the instrument main body 12 can be removed downward. Furthermore, the adapter 11 can be removed from the hook ceiling 3 by rotating the adapter body 31 while pressing the hook ceiling lock release button 34.

  In addition, with the lighting fixture 1 installed on the fixture mounting surface, a fully lit state in which the two fluorescent lamps 10 are lit by an operation of a remote controller (not shown) or a plurality of operations within a predetermined time of a wall switch. The dimming lighting state in which only one fluorescent lamp 10 is lit, the nightlight lighting state in which the nightlight bulb 52 is lit, and the extinguishing state can be switched.

  And in the state which installed the lighting fixture 1 in the fixture mounting surface, as shown in FIG.4 and FIG.5, as shown in FIG.4 and FIG.5, the arc tube 21 of each fluorescent lamp 10 optically opposes the reflective surface part 63 of the reflector 42, and is shown in detail. The straight tube portion 22 of the arc tube 21 is opposed to the main reflection surface portion 64 of the reflector 42, and the square tube portion 23 of the arc tube 21 is disposed to be opposed to the angle reflection surface portion 65 of the reflector 42. . Therefore, the light emitted from the arc tube 21 goes directly to the lower shade 16, and the light emitted from the straight tube part 22 is reflected by the main reflecting surface part 64 and goes in all directions, and the square tube part 23 The light radiated from is reflected by the angular reflection surface portion 65 and travels toward the four corners, which are the directions intersecting the four directions. That is, the light distribution peak of the reflected light from the reflecting surface portion 63 is set so as to extend in the entire outer peripheral direction of the lighting fixture 1. Further, the light directed to the side illuminates the frame body 14 through the lower side of the frame body 14 and is reflected by the outer reflection surface portion 67 of the reflector 42 through the upper side of the frame body 14 to be attached to the fixture mounting surface. Illuminating the ceiling surface, etc., the lighting effect is improved.

  Further, the separation distance between the arc tube 21 of each fluorescent lamp 10 and the reflection surface portion 63 of the reflector 42 is larger than the distance L2 between the straight tube portion 22 and the main reflection surface portion 64 shown in FIG. 6 (a) is set so that the distance L1 between the rectangular tube portion 23 and the angular reflecting surface portion 65 is increased, and the light is more uniformly reflected to suppress the unevenness of light in the shade 16, and the rectangular tube portion 23 Excessive heating is suppressed.

  Thus, according to the present embodiment, for the reflection surface portion 63 of the reflector 42 that covers the instrument body 41 and faces the square fluorescent lamp 10, the main reflection surface portion 64 that faces the straight tube portion 22 is provided. The angle reflecting surface portion 65 is provided opposite to the corner tube portions 23 at the four corners of the fluorescent lamp 10, so that it has a substantially octagonal pyramid shape. In addition to improving the lighting effect, the angle reflection surface portion 65 can increase the irradiation of light toward the four corners of the luminaire 1 to secure illuminance in the four corner directions, and the reflected light can be efficiently reflected over the entire range in the outer peripheral direction. In other words, the optical characteristics can be easily improved.

  Further, the distance L1 between the square tube portion 23 and the angular reflection surface portion 65 is set larger than the distance L2 between the straight tube portion 22 and the main reflection surface portion 64 for the reflection surface portion 63 of the reflector 42. The light is reflected without being biased in the direction, and it is possible to suppress unevenness of the shade 16 on the side and below, and the side and bottom lighting effects can be improved, and the temperature of the square tube portion 23 of the fluorescent lamp 10 is increased. Can be suppressed. In view of this, for example, the temperature of the rectangular tube portion 23 of the fluorescent lamp 10 can be lowered to lower the coldest portion temperature when the coldest portion is set in each square tube portion 23.

  Further, since the chassis 44 of the appliance body 41 is formed of a material having good heat dissipation such as aluminum, it can function as an effective heat dissipation means of the lighting device 48 and suppress an increase in temperature of the lighting device 48. Furthermore, the chassis 44 can be made to function as an effective heat dissipating means of the lighting device 48 by using a color with good heat dissipation such as black. That is, the chassis 44 of the instrument main body 41 does not appear in appearance, and is separate from the reflector 42, so that it can be set to a shape and color with good heat dissipation characteristics.

  Further, the chassis 44 of the appliance body 41 can be shared with a lighting fixture having a reflector of another shape, that is, the parts can be shared, the versatility can be improved, and the manufacturing cost can be reduced. For example, as shown in FIG. 7, an appliance body 41 including a chassis 44 to which a lamp socket 51 and a lighting device 48 are attached, and as shown in FIGS. A ceiling-mounted lighting fixture that covers a plurality of circular fluorescent lamps 100 arranged concentrically, and a reflector having a truncated cone-shaped reflecting surface portion 63 that optically opposes the fluorescent lamps 100 The lighting fixture using 42 and the fixture main body 41 including the chassis 44, the lighting device 48, the lamp socket 51, and the like can be shared. 9 and 10, 61 is a circular flat plate-like substrate portion, 74 is a lamp holder, and a shade (not shown) is attached to constitute a lighting fixture.

  Further, the chassis 44 of the instrument main body 41 is not limited to a substantially cylindrical shape, and may have an appropriate shape such as a substantially polygonal shape on a plane. For example, as shown in FIG. 8, an instrument main body 41 using a small, shared chassis 44 having a substantially rectangular shape with a curved corner may be configured.

  In each of the above embodiments, the reflector 42 is provided with the horizontal frame surface portion 66. However, such a frame surface portion 66 may not be provided. In other words, the angle reflection surface portion 65 and the outer angle reflection surface portion 69 can be formed continuously via a bent ridge line or continuously on the same plane.

  Moreover, the lighting fixture 1 can also be attached with a wood screw etc., without using the hook ceiling 3. FIG. Further, the remote control light receiving device 55 of the remote control device or the nightlight socket 53 may be omitted.

  Further, the fluorescent lamp is not limited to a square shape such as a square shape, and may be a triangular ring or a polygonal ring of pentagon or more. Depending on the shape of the fluorescent lamp, the reflecting surface portion of the reflector can be formed into a substantially hexagonal pyramid shape or a polygonal pyramid shape of a substantially decagonal pyramid shape or more.

  The present invention can be applied to, for example, a lighting fixture that is directly installed on a ceiling surface.

It is a disassembled perspective view which shows one Embodiment of the lighting fixture of this invention. It is the side view which notched a part of lighting fixture same as the above. It is a perspective view of a lighting fixture same as the above. It is a one part bottom view of a lighting fixture same as the above. It is a side view of the state which a part of lighting fixture same as the above decomposed. It is explanatory drawing of a lighting fixture same as the above, (a) is a part where a square tube part and an angular reflection surface part oppose, (b) is a part where a straight pipe part and a main reflection surface part oppose. It is a bottom view which shows other embodiment of the chassis of the lighting fixture of this invention. It is a bottom view which shows other embodiment of the chassis of the lighting fixture of this invention. It is a side view of the state which decomposed | disassembled which shows the example using a chassis same as the above. It is a bottom view which shows the example using a chassis same as the above.

Explanation of symbols

1 lighting equipment
10 Fluorescent lamp
12 Instrument body
22 Straight pipe section
23 Square tube
63 Reflective surface
64 Main reflective surface
65 angle reflection surface

Claims (2)

A substantially polygonal annular fluorescent lamp having a plurality of straight tube portions and a square tube portion connecting the straight tube portions in a direction crossing each other;
An instrument main body provided with a reflective surface portion in which a straight tube portion of the fluorescent lamp and a main reflection surface portion opposed to the reflection surface and a main reflection plate portion are connected to each other and an angular reflection surface portion opposed to the reflection tube surface is provided;
The lighting fixture characterized by comprising. The lighting fixture according to claim 1, wherein the distance between the square tube portion and the angular reflection surface portion is set larger than the distance between the straight tube portion and the main reflection surface portion.

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