JP5756913B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture whose irradiation direction can be changed.

  2. Description of the Related Art Conventionally, downlights having a swing mechanism are known for irradiating not only a direct downward direction but also a vertical plane with a ceiling-embedded lighting fixture. For example, in the luminaire 100 shown in FIG. 6 described in Patent Document 1, a lamp 102 is accommodated inside a cylindrical main body frame 101, and the lamp 102 can freely tilt the center of the lamp. A lamp and a reflector are housed inside the lamp 102, and the irradiation direction can be adjusted by rotating the lamp 102 around the horizontal axis by a swing mechanism (not shown) with respect to the main body frame 101.

  However, as the above-described lighting fixture 100 is rotated by the swing mechanism, light is blocked (kicked) by the main body frame 101, so that not only the brightness according to the performance can be secured for the irradiated object, but also power. Led to wasted money.

  For example, a universal downlight 103 shown in FIG. 7 disclosed in Patent Document 2 is provided with a slide top plate 105 that can be moved up and down on a case 104, and below the slide top plate 105. By suspending the lamp body 106 so as to be able to rotate in two directions, the front portion 107 of the lamp body 106 protrudes below the case 104 with the slide top plate 105 positioned at the lower limit.

Japanese Utility Model Publication No. 63-101411 (FIG. 1) Japanese Patent Laid-Open No. 11-339512 (FIG. 1)

  However, in the conventional universal downlight 103 described above, when changing the irradiation angle, the lamp body 106 has to be pulled out from the case 104 so that the change range of the irradiation angle is not narrowed. There is a design problem that the appearance is lowered due to exposure. Further, when the irradiation angle is returned to the direction immediately below, in addition to the rotation adjustment of the lamp body 106, a pressing operation of the lamp body 106 is required, and the operation of changing the irradiation angle becomes complicated.

  This invention is made | formed in view of the said condition, The objective is to provide the lighting fixture which can change an irradiation direction easily, without impairing brightness, without pulling out a lamp.

Lighting device according to the present invention is held on the ceiling with a mounting hole, and a body frame having an opening downward and spaced apart from each other between the other end from one end of the opening in the body frame, the roof a horizontal arranged in Rutotomoni, each, LED is a direction parallel to, for accommodating the LED, has a reflector opening downward, a plurality of lamp that Ru provided with the said respective lamp is wherein and arrangement direction orthogonally, each lamp by each of a plurality of support shafts as a rotation center provided in a horizontal direction, is rotatably supported on the body frame, inside of the main body frame, a plurality of the lamp the collectively the irradiation angle switching means you want to rotate. at the same rotational angle provided, the faces in the same direction with the desired brightness by light from the lamp is obtained, around the respective lamp is the supporting shaft Rotated to the rotation limit In state, the light of each lamp is not shielded by the main body frame, a shall be illuminated below the ceiling.

Further, in the lighting fixture according to the present invention, the irradiation angle switching means includes a rack member that protrudes a switch part outside the main body frame and is slidable in the direction in which the lamps are arranged inside the main body frame; , in response to said respective lamp provided inside the main body frame, the orthogonal to the arrangement direction of each lamp, and the horizontal direction a plurality of first gear rotatably supported by meshing with the rack member at a rotational center of the When, wherein around the support shafts are fixed to the respective lamp, and a plurality of second gear meshed with the first gear, a shall comprise a.

  According to the luminaire according to the present invention, the irradiation direction can be easily changed without pulling out the lamp body and without damaging the brightness.

Configuration diagram of lighting apparatus according to the present invention Enlarged view of the lamp unit shown in FIG. Operation | movement explanatory drawing of the lamp unit shown in FIG. Configuration diagram showing an example of irradiation angle switching means Explanatory drawing of the irradiation angle switching means shown in FIG. (A) is a side view of a conventional lighting fixture in which the lamp can be freely tilted, and (B) is a side view at the time of tilting. (A) is a side view of a conventional lighting fixture from which a lamp can be pulled out freely, and (B) is a side view when the lamp is pulled out

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration diagram of a lighting fixture according to the present invention.
The lighting fixture 10 is attached to a ceiling 11 and has a main body frame 13 having an opening 12 formed below. The main body frame 13 is formed in a cylindrical shape in the present embodiment, but may be rectangular. A flange 14 is formed on the outer periphery of the opening 12 so that the periphery of the mounting hole 15 formed in the ceiling 11 is hidden. The main body frame 13 is further roughly divided into a cylindrical body portion 16 provided with a collar portion 14 and a lamp support portion 17. A plurality of mounting springs (not shown) whose front ends are free ends are provided on the outer periphery of the cylindrical body portion 16 so as to protrude at equal intervals in the circumferential direction. The mounting springs sandwich the periphery of the mounting hole 15 with the flange portion 14. The main body frame 13 is held on the ceiling 11.

  The lamp support portion 17 is provided so as to be integrally fixed with the cylindrical portion 16. That is, the lamp support part 17 does not move. A lighting power supply device (not shown) that supplies power for lighting to an LED 18 (see FIG. 2) to be described later is attached to the upper portion of the lamp support portion 17. The lighting power supply device may be housed inside the main body frame 13 or provided outside. The lighting power supply device has a power supply terminal block and is electrically connected to an external commercial power supply.

  The lamp support unit 17 is provided with a lamp unit 20 including a plurality of lamps 19. The lamp unit 20 is exposed from the lower side of the lamp support portion 17, and is disposed substantially coincident with the opening 12 of the cylindrical body portion 16. That is, each lamp 19 is made not to protrude greatly from the opening 12. Thereby, in the lighting fixture 10, the fall of the appearance by the lamp | ramp 19 exposed largely from the opening part 12 does not arise. The overall brightness of the lamp unit 20 is set to be equivalent to that of a conventional lighting fixture including a single lamp disclosed in the prior art.

2 is an enlarged view of the lamp unit 20 shown in FIG. 1, and FIG. 3 is an operation explanatory view of the lamp unit 20 shown in FIG.
Each of the lamps 19 in the lamp unit 20 is arranged in a plurality spaced from one end 21 to the other end 22 of the opening 12, and the light from the LED 18 is collected by the reflector 23 and emitted. The reflector 23 has a rotating paraboloid as an inner reflection surface, and the LED 18 is disposed on the central axis of the rotating paraboloid. Light from the LED 18 is condensed by the inner reflection surface and irradiated as illumination light. It is preferable that minute irregularities are formed on the inner reflection surface. By having the minute unevenness, the reflected light is diffused by the minute unevenness, and light having a uniform intensity can be continuously emitted as compared with the case of a mirror surface. Thereby, the illuminance distribution becomes uniform on the irradiated surface, and the illuminance unevenness and the color unevenness are reduced.

  The luminaire 10 uses the LED 18 for the lamp 19 so that the reflector 23 can be downsized. Thereby, it becomes possible to divide the lamp 19 into a plurality of parts so as to ensure the necessary brightness for the entire lamp unit 20. Further, since the reflector 23 is small, it does not protrude greatly from the opening 12 of the cylindrical body portion 16.

  Each lamp 19 is supported by the lamp support portion 17 of the main body frame 13 by a support shaft 24 (see FIG. 4) described later. The support shaft 24 is provided inside the opening 12, and supports the respective lamps 19 on the lamp support unit 17 so as to be rotatable at a rotation center that is orthogonal to the arrangement direction of the lamps 19 and in the horizontal direction. Here, the arrangement direction of the lamps 19 refers to the left-right direction of FIG. Further, the horizontal direction refers to a direction along the ceiling 11. Therefore, the horizontal direction perpendicular to the direction in which the lamps 19 are arranged means a direction perpendicular to the paper surface of FIG.

  A plurality of lamps 19 may be arranged on a straight line, or may be a so-called staggered arrangement in which rows having the same pitch are arranged in parallel with different phases. In the present embodiment, the lamps 19 indicated by solid lines in FIG. 2 are in the front row, and the lamps 19 in which the upper portion is omitted are in a staggered arrangement in the rear row. By adopting such a staggered arrangement, interference with adjacent lamps 19 can be reduced.

  The lighting fixture 10 is thus provided inside the main body frame 13, and a plurality of lamps 19 are rotated together at the same rotation angle as shown in FIG. The lamp 19 can be rotated in the forward and reverse directions around the support shaft 24, that is, can be rotated.

FIG. 4 is a block diagram showing an example of the irradiation angle switching means 26, and FIG. 5 is an operation explanatory diagram of the irradiation angle switching means 26 shown in FIG.
The lamp 19 is rotated by an irradiation angle switching means 26 provided in the lamp unit 20. The irradiation angle switching means 26 includes a rack member 27, a first gear 28, and a second gear 29. The rack member 27 is attached so as to be slidable in the direction in which the lamps 19 are arranged (left and right in FIG. 4) inside the main body frame 13 by projecting the switch portion 30 outside the main body frame 13. A plurality of rack teeth are formed in the sliding direction on the surface of the rack member 27 facing the lamp 19.

  The first gear 28 is provided on the inner side of the lamp support portion 17 according to each lamp 19, and is supported so as to be orthogonal to the arrangement direction of the lamps 19 and to be rotatable at the horizontal rotation center. Engage with rack teeth. The first gear 28 is rotated by the meshed teeth as the rack member 27 slides. That is, linear motion is converted into rotational motion. The second gear 29 is fixed to each lamp 19 around the support shaft 24 and meshes with the first gear 28. The structure example of the support shaft 24, the reflector 23, and the second gear 29 will be described more specifically. For example, the support shaft 24 protrudes from the lamp support portion 17 toward both ends in the diameter direction of the reflector 23. A bearing recess (not shown) that is externally attached to the pair of support shafts 24 is fixed to the reflector 23. That is, the reflector 23 is rotatably supported by the support shaft 24 via a pair of bearing recesses. The second gear 29 is formed concentrically on the outer periphery of the bearing recess. Thereby, as shown in FIG. 5, the reflector 23 is driven to rotate by the rotation of the first gear 28.

  The lamp support 17 is preferably provided with a position holding member (not shown) that is in sliding contact with the rack member 27 with an appropriate pressing force. Thereby, slide resistance can be generated and the rotation angle of the lamp 19 whose illumination direction has been changed can be held in position.

  Further, in the present embodiment, the irradiation angle switching unit 26 has been described as an example of the configuration including the rack member 27, the first gear 28, and the second gear 29. For example, it may be configured by a link mechanism or a cam mechanism.

Next, the effect | action of the lighting fixture 10 which has the said structure is demonstrated.
In the lighting apparatus 10, when the switch unit 30 is slid, the rack member 27 integrated with the switch unit 30 is moved, and all the first gears 28 that mesh with the rack member 27 rotate.

  The second gear 29 is rotated by the rotation of the first gear 28, and the respective lamps 19 fixed to the second gear 29 are rotated about the support shaft 24 in the same direction at the same rotation angle. By configuring the irradiation angle switching means 26 with the rack member 27, the first gear 28, and the second gear 29, the plurality of lamps 19 can be reliably rotated at the same angle with a simple structure. The rotation angle of the lamp 19 changes the illumination angle of illumination light emitted from the LED 18 and reflected by the reflector 23.

  As described above, in the lighting apparatus 10, the lamps 19 are divided into a plurality of parts so that the desired brightness is obtained by simultaneous lighting, and each of these lamps 19 is rotated by the support shaft 24 provided inside the main body frame 13. Be free. Since each lamp 19 is small in size, the distance from the support shaft 24 to the tip of the reflector 23 can be set small, and each lamp 19 can be set without being pulled out from the main body frame 13 as in the conventional structure. Light emitted from the lamp 19 can be irradiated without being blocked by the main body frame 13. Even when the irradiation angle is restored, the irradiation angles of the plurality of lamps 19 can be easily restored at once by a simple operation of only the irradiation angle switching means 26.

  Therefore, according to the lighting fixture 10 which concerns on this embodiment, an irradiation direction can be easily changed, without impairing brightness, without pulling out a lamp.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Ceiling 12 Opening part 13 Main body frame 18 LED
DESCRIPTION OF SYMBOLS 19 Lamp 21 One end 22 Other end 23 Reflector 24 Support shaft 26 Irradiation angle switching means 27 Rack member 28 1st gear 29 2nd gear 30 Switch part

Claims (2)

A main body frame that is held by a ceiling having a mounting hole and has an opening at the bottom;
The spaced apart from each other between the other end from one end of the opening in the body frame, Rutotomoni arranged in the horizontal direction in parallel to the ceiling, each of which houses a LED, the LED, the lower an opening for the reflector, a plurality of lamp that Ru provided with,
Have
Wherein each of the lamp, the perpendicular to the arrangement direction of each of the lamp, and, by each of the plurality of support shafts as a rotation center provided in a horizontal direction, is rotatably supported on the body frame,
Inside the body frame, the irradiation angle switching means is provided collectively a plurality of the lamp Ru is rotated at the same rotational angle,
A desired brightness is obtained by the light from each of the lamps facing in the same direction, and the light of each of the lamps is transmitted to the main body frame even when the lamps are rotated to the rotation limit around the support shaft. luminaire without that will be illuminated below the ceiling being blocked by. The lighting fixture according to claim 1,
The irradiation angle switching means is
Projecting the switch portion on the outside of the body frame, and a rack member which is mounted slidable in the direction of arrangement of the lighting device inside said body frame,
Wherein provided on the inner side of the body frame according to each of the lamp, the orthogonal to the arrangement direction of each lamp, and a plurality of first gear is rotatably supported in the horizontal direction of the center of rotation to mesh with said rack member ,
Wherein around the support shafts are fixed to the respective lamp, and a plurality of second gear meshed with the first gear,
Luminaire Ru equipped with.

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